TH8848B - A system for grooving and rolling straight and flat tube heat exchangers is then produced. - Google Patents

Abstract

A system for grooving and rolling straight sections consisting of a first roll forming a section. The groove was prepared with a number of buttons and a rolled edge that was placed on both sides of it. The second was placed opposite the first roll, and the wing was attached to the first or second roll to Limit the elongation of the straight parts in its transverse The fluted part is symmetrical in the line. Crosses a straight piece and has at least one impact area terminated continuously in its length.

Claims (7)

1. The system for grooving and extruding sheet metal (10), the system consists of a first rolling roller (1) which has a central groove-forming section (1A) provided with a group of ring-forming protrusions (2) alternating with a shorter diameter ring-forming surface (4), the central groove-forming section (1A) is provided symmetrically with regard to the center plane of symmetry of the first rolling roller (1) perpendicular to its longitudinal axis, the first rolling roller (1) also has an edge extrusion section (1B) provided symmetrically on both sides of the central groove-forming section (1A), the system is further comprised of a second rolling roller (8) which is positioned opposite and parallel to the first rolling roller (1), characterized by the first (1) and second (8) rolling rollers being adjusted in such a way that, if in operation, the aforementioned sheet metal (10) is fed through the gap between the first (1) and second (8) rolling rollers, with at least one longitudinal extension area. Its lateral position corresponds to the predefined longitudinal sections (C1, C2) of the first rolling roller (1) mentioned above; such area cannot be deformed into full contact with the surface for the formation of the ring (4) mentioned above in the area of the predefined longitudinal sections of the first rolling roller (1) mentioned above, and the system is further equipped with a device (9) for inhibiting the elongation of the sheet metal (10) mentioned above in the longitudinal direction of the first rolling roller (1) mentioned above. 2. The system as claimed in claim 1 is characterized by placing a portion of the ring-forming protrusion group (2) mentioned above on the center plane of symmetry, the center of the central groove-forming section (1A mentioned above) shall be selected as at least one predetermined longitudinal section (C1) mentioned above of the first roller (1) mentioned above, by this reduction of the radius of the ring-forming protrusion (3) centered. 3. The system, as per claim I, is characterized by two predetermined longitudinal sections (C1, C2) of the first extrusion roller (1) mentioned above, each section situated between one of the edge extrusion sections (1B) mentioned above and the adjacent section (2') of the ring-forming protrusion group (2) mentioned above of the first extrusion roller (1). 4. The system as claimed in claim 1 is characterized by the aforementioned restraining device (9) being in the form of two convex edges, each to be mounted on the longitudinal end of the first roller (1) mentioned above. 5. The system as claimed in claim 1 is characterized by the aforementioned restraining device (9) being in the form of two convex edges, each convex edge being mounted on the longitudinal end of the aforementioned second roller (8). 6. The system as provided for in claim 1 is characterized by the aforementioned ring-forming protrusions (2) of the aforementioned central groove-forming section (1A) being arranged with fixed protrusion spacing. 7. The system as claimed in claim 1 is characterized by the aforementioned group of protrusions for the formation of the ring (2) having an average protrusion spacing of 0.55 mm, a height of 0.16 mm and an angle of inclination of 10°.