Abstract:
Apparatus for internally coating a pipe, comprising electric heating means heating a pipe as it is internally spray coated, a plurality of first rollers mounted on a first rotatable shaft having an inlet end proximate the heating means and an outlet end spaced from the heating means, and a plurality of second rollers mounted on a second rotatable shaft parallel to the first shaft and having an inlet end adjacent the heating means. Each second roller is spaced from and adjacent to a corresponding first roller in a paired relationship to thereby define a nesting groove located above the gap between each set of paired rollers. Motive means rotates the shafts and the mounted rollers to rotate the pipe within the nesting grooves of adjacent pairs of rollers. Axial advancing means longitudinally advances the pipe through the heating means and sequentially along the nesting grooves of adjacent pairs of rollers. A movable holdback means is located on the outlet side of the heating means for restraining the advancement of the pipe to a predetermined rate of speed sufficient to insure application of a uniform thin coating of coating material on the pipe internal surface, thereby overcoming thermal and magnetic effects of the heating means which would otherwise advance the pipe faster than the speed of the axial advancing means.
Abstract:
An apparatus for application of material to the internal surface of cylindrical items of manufacture. The apparatus includes a frame, a transport system having work stations supporting the items, an application system, and a curing system for curing the material applied to the cylindrical items. The application system includes a drive roll, movable into engagement with the item for rotating the item, a coating roll movable between a position engaging the internal surface of the item to apply the desired material, and a position engaged with a reservoir system having a rotating supply roll for supplying the coating roll with material.
Abstract:
Apparatus and method employed in applying a useful coating to fasteners is disclosed. Particularly, a resin material in powder form is preferably applied to a selected surface of the fastener to cover a desired length of the threads of the fastener. The apparatus includes a support for moving the fasteners deposited thereon to a position where the coating is applied, and a positioning device is provided to insure that the fastener is peripherally located for application of the coating. A cam mechanism associated with a plurality of tubes provides movement of the tubes for application of the resin material to the fasteners. The fasteners are subsequently removed from the support by fluid pressure.
Abstract:
A system and method of coating the seam on the inside surface of a container is disclosed. The container is initially spun about an axis generally parallel to the seam. The seam of the container is engaged while the container is rotating to stop the container with the engaging means in registry with the seam. The interior of the container is coated along the seam while the container is stopped to provide a protective coating overlying the seam. If desired, a subsequent protective coating can be applied on the entire inside surface of the container.
Abstract:
A method is provided for the continuous manufacture of self-locking internally threaded fasteners having a locking body or patch comprised of resilient thermoplastic material, applied to the fastener in powder form. A support member having a plurality of cavities for receiving said fasteners, and a nozzle associated with each of said cavities, is moved along a path through a plurality of locations wherein the fastener is deposited at a cavity aligned with a respective nozzle at a first location, material is forced through the nozzle onto the fastener at a second location, the fasteners are removed from the respective support at a third location, and the nozzles are purged of material at a fourth location prior to the initiation of a subsequent sequence of operations by the apparatus.
Abstract:
An automatic can coating and feed means includes indexed turret means having a plurality of can supporting means spaced about its periphery including a driven vacuum chuck and can engaging roller supporting cans engaged on their sides by a driven roller for rotation about the can axis; can infeed means adjacent the turret feeds a can into said can supporting means during dwell of the turret, automatically operable spray means adjacent the turret coats the can interior during the dwell of the turret; in a second embodiment the cans engage driven belts upstream of the spray station so that they are already rotating upon arrival at the spraying station with a unique star wheel feed effecting rapid feeding of cans to the turret to provide rapid operation of the entire device.
Abstract:
Apparatus for coating the interior cylindrical surface of objects such as metal cans for food, beverages and other substances which need protection against injurious reaction with or pollution from contact with the material of the can. Airless spray coating of such surfaces revolving at high speed by stationary spray nozzles external of the can. The nozzles project impinging airless sprays having desirable patterns through respective ends of open ended can cylinders into longitudinally elongated contact with the interior surface.
Abstract:
Method and means for coating the interior cylindrical surface of objects such as metal cans for food, beverages and other substances which need protection against injurious reaction with or pollution from contact with the material of the can. Airless spray coating of such surfaces revolving at high speed by stationary spray nozzles external of the can. The nozzles project impinging airless sprays having desirable patterns through respective ends of open ended can cylinders into longitudinally elongated contact with the interior surface.
Abstract:
Can spinning is provided by a spinning wheel having a rubberized face. The rubberized face is pierced by conduits connected to a vacuum source. In this way, as a can comes to the spinning operation, the can wall contacts the spinning wheel and is held down against the rubberized material by the vacuum. The vacuum is applied through the conduit only in the area of the surface contact between the can and the wheel. The vacuum is connected to a conduit in the rubber face at a point slightly before the section of the wheel approaches the can wheel contact point. In this way, vacuum is being fully applied at the time the surface area of the wheel adjacent to the conduit contacts the can wall.