摘要:
The present invention relates to a method for manufacturing a formed piece of aluminium or some other relatively soft metal. In accordance with the invention, a slice is cut from a rod of aluminium or some other raw-cast metal; the slice forms a blank (3), which is placed on the mould surface (10) of a mould tool (5) rotating about its axis (4), and which is formed using a roll forming tool rotating about its axis (6) inclined to the axis of the mould tool and being in linear rolling contact with the blank surface. The blank is then formed to a substantially disc-shaped piece of plate between the opposite rotating tools (5, 7). The method may be part of the manufacturing process of a frying pan or kettle so that the roll formed piece may comprise the bottom and collar of the utensil, which is bent to form the sides of the cooking utensil at the next pressure turning stage; or, alternatively, the rol formed piece may be fastened as the bottom to a separately manufactured utensil by linear pressing. The formed piece may also be deep-drawn to a globe of a street light, or it may be used as a traffic sign, or as a lid for a soft-drink can.
摘要:
Cap opener comprising a plate-like body (1) and a gripping element (2) fitted to grip a bottle cap. The body (1) comprises as a substantially fixed part of it a plate-like circular sector of over 180°, designed to be used as a token (3) in a shopping cart or equivalent.
摘要:
Cap opener comprising a plate-like body (1) and a gripping element (2) fitted to grip a bottle cap. The body (1) comprises as a substantially fixed part of it a plate-like circular sector of over 180 DEG , designed to be used as a token (3) in a shopping cart or equivalent.
摘要:
The invention relates to a method for manufacturing a thermal element. The thermal element is made by casting a first layer of pourable mass into a mould, placing an uninsulated sheet-like resistance element cut from a metal sheet onto the fresh layer of pourable mass and casting a second layer of pourable mass into the mould so that only the ends of the resistance element are left visible. Moreover, the invention relates to a thermal element manufactured by the method of the invention and to heat storing water tanks and electric sauna stoves utilising these thermal elements.
摘要:
The invention is related to a process and apparatus for the manufacture of a cooking vessel, such as a frying pan (12) or a kettle from a metal blank. According to the invention, the vessel is manufactured by roll forming techniques by using a lower tool (3) that rotates around its axis (2), the form face (6, 7) of the lower tool being designed so that it correponds to the outer surface of the thus created vessel, and an upper tool (5) that rotates around its axis (4), the surface (9, 10) of the upper tool having a profile that corresponds to the inner surface formed to the vessel. The blank is placed on the form face of the lower tool and the tools (3, 5) are then made to rotate so that the blank rotates along with the lower tool (3), and the surface of the upper tool (5) is in linear roll contact with the blank, whereby the metal is formed in the slot between the tools, spreading out into the desired form of the vessel. In the manufacture of the frying pan (12), the blank may be a straight piece of sheet, whereby the rising sides of the pan are formed in the roll forming with the blank spreading radially outwards at its edges. In connection with the forming, the outer and inner surfaces of the vessel can be provided with patterns consisting of protrusions and/or recesses.