Lost-foam mold for gate valve bodies
A lost foam, valve body technology, applied in casting and molding equipment, etc., can solve the problems of increasing manufacturing costs, unable to guarantee product integrity and use functions, etc., to shorten the processing cycle, ensure integrity and performance, and molding effect. Good results
Active Publication Date: 2014-05-07
LUOYANG LIUSHI MOLD
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Problems solved by technology
In the casting process of the gate valve body in the prior art, the flange hole in the center of the flange needs to be processed separately, which cannot guarantee the integrity and function of the product, and increases the manufacturing cost
Method used
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[0018] The present invention is described in conjunction with accompanying drawing and specific embodiment:
[0019] Such as Figure 5 shown and combined with Figure 6 , Figure 7 , Figure 8 , a kind of lost foam mold of gate valve valve body, described lost foam mold comprises upper mold 16 and lower mold 17; Described upper mold 16 has upper mold air chamber 1, and described upper mold air chamber 1 is upper mold A rectangular body with a sealed end face; the lower mold 17 has a lower mold air chamber 5, and the lower mold air chamber 5 is a rectangular body with a lower end face seal; the cavity of the upper mold air chamber 1 is provided with a The flange hole on the gate valve body, the flange core-pulling insert I8 of the threaded hole, the flange core-pulling insert II18, and the center core-pulling insert 9 used to form the center hole of the valve body on the gate valve; the flange The core-pulling insert I8 and the flange core-pulling insert II18 are symmetrica...
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The invention belongs to the technical field of molds, and provides a lost-foam mold for gate valve bodies. The lost-foam mold for the gate valve bodies comprises an upper mold and a lower mold, the upper mold (16) is provided with an upper mold gas chamber (1), and the lower mold (17) is provided with a lower mold gas chamber (5); two flange core-pulling inserts and a middle head core-pulling insert (9) are arranged in a cavity of the upper mold gas chamber (1); the two flange core-pulling inserts are arranged bilaterally; and the axis of the middle head core-pulling insert (9) is perpendicular to the axis of the flange core-pulling insert I (8) and the axis of the flange core-pulling insert II (18). The lost-foam mold is provided with a core-pulling cylinder I (2), a core-pulling cylinder II (19) and a core-pulling cylinder III (20) which are used for driving the flange core-pulling insert I (8), the flange core-pulling insert II (18) and the middle head core-pulling insert (9) to reciprocate in the cavity of the upper mold gas chamber. The lost-foam mold has the advantages that integrity and service performance of a product are guaranteed, the development cycle of the product is shortened, mold stripping efficiency of the gate valve bodies is improved, labor intensity of workers is reduced, and casting precision and surface smoothness of the valve bodies are guaranteed.
Description
technical field [0001] The invention belongs to the technical field of moulds, and mainly provides a lost foam mold of a gate valve body. Background technique [0002] Gate valve body products are generally integrally formed, such as Figure 1-Figure 4 Shown is a schematic diagram of the structure of the gate valve body, the valve body of the gate valve body is a hollow structure, one end of the valve body is provided with a flange connected to the pipeline, and the flanges are two symmetrically arranged left and right; Each of the flanges has threaded holes uniformly distributed along the circumference. In the casting process of the gate valve body in the prior art, the flange hole in the center of the flange needs to be processed separately, which cannot guarantee the integrity and function of the product, and increases the manufacturing cost. Contents of the invention [0003] In order to solve the above-mentioned end problems, the object of the present invention i...
Claims
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IPC IPC(8): B22C7/02B29C33/00B29C67/20
Inventor 刘中华
Owner LUOYANG LIUSHI MOLD