Apparatus for producing layered tubes or rings
First Claim
1. Apparatus for producing a series of layered packs of tubing from a length of flexible, non-resilient tubing, the apparatus comprising a layering tube having an internal diameter determined by the external diameter of each layered pack to be produced, a central mandrel mounted concentrically inside said layering tube and having an external diameter determined by the internal diameter required for each said layered pack, whereby an annular passage is formed between said layering tube and said central mandrel, means closing said annular passage at one end thereof, means for feeding flexible, nonresilient tubing having a diameter appreciably larger than that of said central mandrel into said passage at a rate such that the tubing gathers in a ring about said central mandrel, reciprocable means inside said passage for compacting the tubing into layers as it gathers towards said closed end of said passage, driving means for reciprocating said reciprocable means in timed relationship with the operation of said feeding means and means for severing a portion of the tubing when so compacted from a remaining portion of the tubing, said means closing said annular passage being mounted for movement to enable said severed compacted tubing to be discharged from said passage as a layered pack.
3 Assignments
0 Petitions
Accused Products
Abstract
An annular container mounted at the base of a passage between a layering tube and a central mandrel is charged with a layered tube of flexible tubing delivered over a floating mandrel when coaxially in contact with mandrel by driving rollers coacting with pinch rollers on the floating mandrel. The tubing passes over the mandrel and gathers in the layering tube while being compacted by two sets of shoes reciprocated 180° out of phase by rotating discs and connecting rods. When sufficient tubing has been delivered the floating mandrel is raised to enable a hot wire to pass between the mandrels to sever the tubing. The layering tube and central mandrel with the container can then be carried by a turntable through further stationary positions where the layered tubing is further compressed by reciprocable rings, a lid is put on the container to form a cassette and the cassette is discharged.
139 Citations
18 Claims
- 1. Apparatus for producing a series of layered packs of tubing from a length of flexible, non-resilient tubing, the apparatus comprising a layering tube having an internal diameter determined by the external diameter of each layered pack to be produced, a central mandrel mounted concentrically inside said layering tube and having an external diameter determined by the internal diameter required for each said layered pack, whereby an annular passage is formed between said layering tube and said central mandrel, means closing said annular passage at one end thereof, means for feeding flexible, nonresilient tubing having a diameter appreciably larger than that of said central mandrel into said passage at a rate such that the tubing gathers in a ring about said central mandrel, reciprocable means inside said passage for compacting the tubing into layers as it gathers towards said closed end of said passage, driving means for reciprocating said reciprocable means in timed relationship with the operation of said feeding means and means for severing a portion of the tubing when so compacted from a remaining portion of the tubing, said means closing said annular passage being mounted for movement to enable said severed compacted tubing to be discharged from said passage as a layered pack.
Specification