| 摘要 |
<p>1,061,069. Making radiators; corrugating; unwinding; stamping; welding by fusion and pressure. POLYVENTIONS Ltd. Nov. 27, 1964, No. 48273/64. Headings B3A, B3E, B3Q and B3R. [Also in Divisions B5 and B8] Sheet metal strips 11, 12 pass through a reciprocating press 24, comprising a punch member 38, a reciprocable member 40 having a die and a punch on its top and bottom faces respectively and a fixed die member 39, to form transverse ducts (13) and conduits (14) in each strip (Fig. 1, not shown). The strips 11, 12 are looped upwards to allow some slack for the intermittent feed. Rolls 21, 22 are intermittently driven by an electric motor M1 which is controlled by a micro-switch S1 to maintain the appropriate slack. A feed mechanism 25 draws the strips through the press 24 and advances the formed strips to a spot welding apparatus 26, which comprises a row of hydraulic cylinders 47 each carrying an electrode 48 to weld the panels at portions (15) (Fig. 1) when the press 24 is closed. The panels pass to severing means 27 comprising two highspeed cutter discs 52 which cut through the conduits (14), and a shear at station 27B, which severs the panel. The severed panel drops on to a conveyer 28 thereby triggering a micro-switch to return a carriage to a rearward position to latch catches 72 against the trailing edge of the panel. The carriage triggers a second micro-switch to start its forward move and the panel thereon pushes the preceding panel through a welder 29, which seam welds the edges (17) (Fig. 1) between welding discs 29<SP>1</SP>. The seam welded panel P passes to conveyer means (75) (Fig. 9, not shown) in which the panel is brought to a vertical position by rams (80) and moved transversely by a ram (83) on to guide rolls (86) which may accommodate a plurality of panels. The panel is advanced to an edge weld station (76) where the edge to be welded is held in an hydraulically operated clamp (87) which prevents distortion as a welding head (91) traverses the edge of the panel. The trailing edge of the panel may be simultaneously welded in a similar clamp. The welder may be of the inert gas shielded short circuiting arc type. Reference has been directed by the Comptroller to Specification 932,324.</p> |
