A steel pipe shrinking die
A shrinking die and mold technology, applied in forming tools, manufacturing tools, metal processing equipment, etc., can solve the problems of reducing the quality of steel pipes, low processing efficiency, bumps, etc., to reduce costs, save shrinking processes and molds, The effect of improving efficiency
Active Publication Date: 2015-09-02
ZHANGJIAGANG FREE TRADE ZONE HENGLONG STEEL TUBE
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Problems solved by technology
This method has the following shortcomings: 1. This method uses two sets of shrinking dies, and the cost is relatively high; 2. This method is twice shrinking, the process is complicated, and the processing efficiency is relatively low; 3. The second shrinking is at Necking again on the part that has been shrunk for the first time will damage the surface of the first shrunk during the actual operation, thereby reducing the quality of the steel pipe
Method used
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Embodiment Construction
[0016] The present invention will be described in further detail below through specific examples.
[0017] Such as figure 1 , 2 As shown, a steel pipe shrinking mold includes a lower template 1, a mold base 2, a mandrel 6, a lower mold base 4, a lower necking mold 7, an upper necking mold 9, a necking mold cover 5, and a pusher sleeve 3 , guide sleeve 10, mold cover 11, upper mold assembly, described mold base 2 is fixed on the lower formwork 1 by three long screws, and this mold base 2 is provided with vertical installation through hole 21, and this installation through hole 21 It is a stepped hole, the lower mold base 4 is installed in the installation through hole 21, the outer peripheral shape on the lower mold base 4 matches the shape of the stepped hole, the stepped surface of the stepped hole supports the lower mold base 4, and the lower mold base 4 4 is provided with a vertical mandrel passing hole 41, wherein, the bottom of the lower mold base 4 is also provided wit...
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The invention discloses a steel tube reducing mould which comprises a lower mould plate, a mould seat, a core mould, a lower mould seat, a lower reducing mould, an upper reducing mould, a reducing mould sleeve, a guide sleeve, a mould cover and an upper mould assembly. The lower reducing mould is arranged in a reducing mould installation hole, and the upper reducing mould is arranged in the reducing mould installation hole and positioned above the lower reducing mould. A lower circular mould cavity and an upper circular mould cavity which are concentrically communicated are arranged on the lower reducing mould and the upper reducing mould, and the diameter of the upper circular mould cavity is larger than that of the lower circular mould cavity. The guide sleeve abuts against the upper end surface of the upper reducing mould, and the hole diameter of a guide hole is larger than that of the upper circular mould cavity. The mould cover seals the lower mould seat, the lower reducing mould, the upper reducing mould, the reducing mould sleeve and the guide sleeve in the mould seat, the core mould is concentric to the lower circular mould cavity, and the top of the core mould extends into the upper circular mould cavity. The steel tube reducing mould can perform secondary reducing on steel tubes in one time, therefore, a reducing procedure and one reducing mould are saved, cost is reduced, and efficiency is improved.
Description
technical field [0001] The invention relates to a die, in particular to a steel pipe shrinking die. Background technique [0002] At present, it is often necessary to shrink the end of the steel pipe to meet different usage requirements. Especially the secondary necking of the end of the steel pipe, this kind of steel pipe forming of the second necking is currently realized by two sets of necking dies, that is, the end of the steel pipe is firstly necked on the necking die, and then the The part that has been necked is then subjected to secondary necking on another small shrinking die. This method has the following shortcomings: 1. This method uses two sets of shrinking dies, and the cost is relatively high; 2. This method is twice shrinking, the process is complicated, and the processing efficiency is relatively low; 3. The second shrinking is at Necking again on the part that has been shrunk for the first time will damage the surface blind of the first shrunk in the actu...
Claims
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IPC IPC(8): B21D37/10B21D41/04
Inventor 程锡铭
Owner ZHANGJIAGANG FREE TRADE ZONE HENGLONG STEEL TUBE