CN202037244U - Opening reducing mold for pressure equalizing tube - Google Patents

The utility model discloses an opening reducing mold for a pressure equalizing tube, which relates to the opening reducing mold for an inner flange of a tube opening of the pressure equalizing tube made of aluminum alloy materials and has the advantages that the structure is simple and the cost is low. The opening reducing mold comprises an upper mold and a lower mold, wherein the lower mold is provided with a mold cavity consistent with the surface profile of a lower tube body of the equalizing tube, a spherical-crown-shaped groove is arranged on the bottom surface of the upper mold, and in addition, the maximum diameter of a groove opening of the spherical-crown-shaped groove is greater than the diameter of the tube opening of the pressure equalizing tube. The opening reducing mold provides a mold pressing scheme adopting one-step punching and pressing forming through combining the material characteristics, and the aluminum alloy materials have better plastic deformation capability than cold plates and hot plates, so the smooth opening reducing structure can be pressed and made in one step under the condition that the upper mold shape is proper, and in addition, conditions such as wrinkles, cracking and the like can not occur. The opening reducing mold has the advantages of high efficiency, accurate size, low cost and smooth surfaces of finished products.

The closing-in mould of equal pressure cylinder

Technical field

The utility model relates to a kind of punch-forming mold, relates in particular to the nozzle in-flanges closing-in mould to the equal pressure cylinder of aluminum alloy material.

Background technology

The equal pressure cylinder of annular is roughly tire shape.Added man-hour in small lot batch manufacture, generally be the cylindrical shell that adopts straight mouthful of spinning or the moulding processing of drawing die elder generation in the past, adopts the processing of closing up of artificial spinning means again.The problem that exists is: 1. amount is few as making spinning block cost height.2. low by manual closing in efficient, and appearance is very rough.

The utility model content

The utility model is at above problem, and a kind of closing-in mould of equal pressure cylinder simple in structure, with low cost is provided.

The technical solution of the utility model is: comprise upper die and lower die, described counterdie has and the equal consistent die cavity of pressure cylinder bottom stack shell surface profile, the bottom surface of described patrix is provided with spherical groove, and the maximum gauge of described spherical groove notch is greater than the diameter of described equal pressure cylinder nozzle.

Described equal pressure cylinder stack shell radius is 1 with the ratio of the spherical crown radius of spherical groove: 1.3-1.5.

The utility model is in conjunction with the material characteristic, the one-time formed mold pressing scheme of employing punching press has been proposed, because aluminum alloy material has better plastic deformation ability with respect to cold drawing, hot plate, therefore, under the suitable situation of patrix shape, can suppress level and smooth closing in structure once; And situations such as gauffer, cracking can not appear.Mould efficient height of the present utility model, size standard, low, the manufactured goods smooth in appearance of cost.

Description of drawings

Fig. 1 is a structural representation of the present utility model

1 is patrix among the figure, the 10th, and groove, the 2nd, counterdie, the 20th, die cavity, the 3rd, equal pressure cylinder;

Fig. 2 is a user mode reference diagram of the present utility model

31 is closing in structures among the figure.

The specific embodiment