| 摘要 |
1,233,753. Bending and corrugating. OLIN CORP. 18 Dec., 1968 [1 March, 1968], No. 60194/68. Headings B3A and B3E. Apparatus for bending strip comprises a fixed base 10, Fig. 1, a spindle 30 having at least one groove and which is mounted on the fixed base, a movable base 20 pivoted at the spindle and on which a roller 90 is mounted, means 120 for co-operating with the roller for deforming the strip S, means for holding the strip in operative engagement with the spindle groove and means for rotating the movable plate 20 around the spindle 30. In operation, a piece of strip S which contains stop-weld at appropriate places is fed through clamping block 100 and is placed upon adjustable screws 150. The height of the screws 150 is adjusted so that the areas in the strip corresponding to the desired passageways which contain stop-weld are in alignment with pins 126 or 126a, Fig. 5, on the follower block 120 and the grooves 41-44 on the die spindle. The strip is clamped in the clamping block 100 by tightening bolt 104 at a part whereby the bend will occur at the die spindle at the desired length of strip. One side of the strip contacts die spindle 40. The follower block 120 and pins are then brought into contact with the other side of the strip. Also at this point a retainer strap 130 is engaged upon the die spindle nut 46. The locking tee 140 is inserted into opening 132 in the retainer strap and into opening 82 in the guide top. The adjusting bolt 51 is rotated to urge the wiper block 90 into firm engagemente with the follower block. At this point the entire movable assembly is rotated with respect to the fixed plate 10 around the die spindle 40. Fig. 8 shows a strip processing sequence where the previously described bending takes place at the bending station 400 after which fin material 411, end plates 413 and headers 414 are assembled at the assembly station 410. The fin material and/or the strip will contain a coating of brazing material so that when the strip-fin nuts 412 are introduced into the furnace 420 the fin material is solidly brazed to the strip. The strip is then moved on to the inflation station 430, where at one end of the strip an inflation needle is introduced into the pattern of stopweld material and clamped by means of hydraulic line 432. Fluid pressure by means of air line 431 inflates the passageway after which the inflated articles are checked for leaks in a water tank 440. |
