Opening closing mould of pressure equalizing barrel
A technology for pressing cylinders and moulds, which is applied to the field of inner flanging and closing moulds in the cylinder mouth, can solve the problems of rough appearance, high cost and low efficiency of spinning moulds, and achieve the effects of smooth appearance, low cost and accurate size.
Inactive Publication Date: 2012-09-19
JIANGSU YONGLONG ELECTRIC
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Problems solved by technology
The existing problems are: ①The quantity is small, such as the high cost of manufacturing the spinning die
②The efficiency of manual closing is low, and the appearance is very rough
Method used
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[0011] The present invention as figure 1 As shown, it includes an upper mold 1 and a lower mold 2, the lower mold 2 has a mold cavity 20 consistent with the surface contour of the lower part of the pressure equalizing cylinder 3, and the bottom surface of the upper mold 1 is provided with a spherical crown groove 10 , and the maximum diameter of the notch of the spherical crown groove 10 is greater than the diameter of the mouth of the pressure equalizing cylinder 3 .
[0012] The ratio of the radius of the pressure equalizing cylinder 3 to the radius of the spherical crown of the spherical groove 10 is 1:1.3-1.5.
[0013] The use state of the present invention is as figure 2 As shown, the feeding port of the upper mold 1 uses the curved surface of the spherical crown-shaped groove 10 to shrink the mouth of the pressure equalizing cylinder 3 to form a closing structure 31 finally.
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The invention relates to an opening closing mould of a pressure equalizing barrel, and relates to an opening closing mould of an inward flanging of a barrel opening of a pressure equalizing barrel made of aluminum alloy material. The opening closing mould is characterized by simple structure and low cost, and comprises an upper mould and a lower mould, wherein the lower mould comprises a mould cavity which is identical to the surface outline of a barrel body on the lower part of the pressure equalizing barrel; the bottom surface of the upper mould is provided with a spherical-crown groove; and the maximal diameter of the notch of the spherical-crown groove is larger than the diameter of the barrel opening of the pressure equalizing barrel. According to the opening closing mould provided by the invention, material characteristics is combined; a mould pressing proposal using a stamping one-time forming method is disclosed; because the aluminum material has preferable plastic deforming capacity correspondingly to a cold board and a hot board, a smooth opening closing structure can be stamped for one time on a condition that the shape of the upper mould is suitable; situations such as draping, cracking and the like cannot be happened; and the opening closing mould is characterized by high mould efficiency, precise size, low cost and smooth appearance of a finished product.
Description
technical field [0001] The invention relates to a stamping forming die, in particular to a die for flanging and closing the mouth of an aluminum alloy material equalizing cylinder. Background technique [0002] The annular equalizing cylinder is roughly in the shape of a tire. In the past, in the production and processing of small batches, spinning or stretching molds were generally used to form and process straight barrels, and then manual spinning was used to close the mouth. The existing problems are: 1. The quantity is small, such as the high cost of manufacturing spinning dies. ②It is inefficient to close the mouth by hand, and the appearance is not smooth. Contents of the invention [0003] Aiming at the above problems, the present invention provides a closing die of a pressure equalizing cylinder with simple structure and low cost. [0004] The technical solution of the present invention is: comprising an upper mold and a lower mold, the lower mold has a mold cav...
Claims
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IPC IPC(8): B21D37/10
Inventor 张道勇胡镇
Owner JIANGSU YONGLONG ELECTRIC
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