TH24558C3 - Method for manufacturing pulleys made of sheet metal - Google Patents

Abstract

DC60 (22/11/42) Issues to be resolved The purpose of this invention is to present a method for fabricating pulleys made of sheet metal by providing a cylindrical body wall for the use of a single piece of conveyor belt. Periphery of the baseboard section With a ring protruding part in the section The end of the side of the base plate of this body wall. Solution The circular disk-shaped base plate 3 is formed from a flat piece of material and Ring-shaped wall 4, formed to be bent With the outer end wide open from The perimeter of the base plate part 3 is then clamped by a shaped object 1. Between the upper hemispherical mold 5 and the lower hemisphere mold 6, then pilot a face Cut the trapezoid 8 of the extruder roller 1 7, press it on the periphery of the ring wall 4, and turn it over. To form the thick part 9 by simultaneously pressing the ring wall 4 axially, it forms the corners 10, 11 at the corners at the top and bottom ends. The thick 9 is then applied to the surface around. The flat outside 12a of the 2nd extruder roller 12 is pressed on the flat outer surface 9a of the thickness 9 radially and then made Rotate to form the fuselage wall 13, while allowing the top corner 10 to protrude from the gap between the lower end of the rotatable upper hemisphere 5 and the upper end of the outer face. The flat side of the 2nd extrusion roller 12 to form a sloping part. 14 The selected drawing. Fig. 4 Issues to be solved. The purpose of this invention is to present a method for fabricating pulleys made of sheet metal by providing a cylindrical body wall for the use of a single piece of conveyor belt. Periphery of the baseboard section With a ring protruding part in the section The end of the side of the base plate of this body wall. Solution The circular disk-shaped base plate 3 is formed from a flat piece of material and Ring-shaped wall 4, formed to be bent With the outer end wide open from The perimeter of the base plate part 3 is then clamped by a shaped object 1. Between the upper hemispherical mold 5 and the lower hemisphere mold 6, then pilot a face Cut the trapezoid 8 of the extruder roller 1 7, press it on the periphery of the ring wall 4, and turn it over. To form the thick part 9 by simultaneously pressing the ring wall 4 axially, it forms the corners 10, 11 at the corners at the top and bottom ends. The thick 9 is then applied to the surface around. The flat outside 12a of the 2nd extruder roller 12 is pressed on the flat outer surface 9a of the thickness 9 radially and then made Rotate to form the fuselage wall 13, while allowing the top corner 10 to protrude from the gap between the lower end of the rotatable upper hemisphere 5 and the upper end of the outer face. On the flat side of the 2nd extruder roller 12 to form a sloping part 14, selected drawing: Fig. 4:

Claims (2)

1. A method of manufacturing a sheet metal pulley in which the cylindrical body walls for the belt are arranged. The same piece as the outer circumference of the base plate. And the ears are convex in shape Ring with the end of the base plate side of the body wall. Which consists of the following steps Forming a formed torso Which is arranged with a circular base plate And the casing wall Rings in which all the contours of the walls are curved in cross-section. From a flat base The annular casing wall has an arc of some part of the periphery that is bent on the inside. To enlarge from the outer circumference of the baseboard section to the area above the upper surface of the baseboard segment and the arc of the sloped outer periphery part that is sloped and bent to continue. Also the outer circumference of the arc of some part of the inner periphery And has a shape for extending the outer end in a downward direction Fixing the base plate of the formed body And the curvature of some parts of the periphery Inside between the rotatable mold on the top And the mold that rotates below And making the arc of Some of the outer periphery protrudes outward from the inter-mold part that Rotatable above and below; Rotating top mold turning And below, around the axis in conjunction with The body that was formed in this state And pressing the groove of the chin group force of the rotating roller The first form opposes the arc of some of the outer periphery, extending outwards. In addition to the part between the rotatable mold above and below in the radial direction at time The same while rotating around the axis Causing the compression of the arc of some parts of the periphery Outside in an axial direction to form a thick base. And align the corners with the top and bottom corners of the thick base. Which the surrounding face is flat on the outside Which is exactly in the direction The axial orientation of the thick base. And the top end And the sloping bottom faces each other, and the torso fixation formed between the rotatable mold above and below to make the base part The thick protrusion extends outward from the part between the upper and lower rotating dies and rotates around the axis, and the flat outer surface pressing of the second rotating rollers opposes the face. The flattened outer periphery of the thickened basal part in the radial direction at the same time while rotated, creating the torso wall formation at the same time while forming the auditory portion by means of protrusion. Exit of the upper corner part to the cavity between the outer circumference part at the lower end of the mold Rotatable on top And the flat outer surface of the second rotating roller 2. Method for producing sheet metal pulleys according to claim 1, where in the process of pressing Rollers that rotate The second is opposed to the flattened outer periphery of the thickened basal part while rotated, creating the torso wall formation at the same time while forming the auditory portion on the tip of the basal plate portion. The other ear is also protruding, on the tip on the side that is facing opposite. The end of the side of the base plate part of the sample wall was simultaneously