Sand mold casting mold for cylinder wallboard bracket of cotton carding machine and process method thereof

Abstract

The invention discloses a sand mold casting mold for a cylinder wallboard bracket of a cotton carding machine and a process method thereof. The sand mold casting die comprises an upper mold, a lower mold and a core box mold; the upper mold, the lower mold and a mold frame are integrally formed through CNC processing; a sand mold is poured into a large textile machine plate by a melt two-channel column-shaped pouring gate, a two-channel arc-shaped feeding flow channel and a multi-channel annular inner pouring channel; a 3D simulated pouring aided design is adopted, a plurality of cold irons arearranged in the sand mold, an arc-shaped surface is arranged on an upper mold cavity and is used for blending the shrinkage ratio of the large textile machine plate; four column-shaped risers are formed in the upper mold and are used for regulating and controlling the internal rib tightness of the large textile machine plate; the lower mold is provided with bilaterally-symmetrical mold cavities with fan-shaped holes, and the mold cavities are provided with upper, lateral and lower mold cavities in an integrated winding manner; through 3D simulated pouring, the product flatness reaches 1 mm; feeding heads are arranged to solve the internal rib looseness; the two-channel pouring gate and the multi-channel annular inner pouring channel are adopted for pouring, so that the uneven flow rate phenomenon caused by wall thickness unevenness is solved.

Description

technical field [0001] The invention relates to the technical equipment field of large plate casting of textile machines, in particular to a sand casting mold for a carding machine cylinder wall plate support and a process method thereof. Background technique [0002] Carding is the most important process in the spinning process. Known as the "heart" of the spinning process, it has a great impact on product quality and production costs. The working principle of the carding machine is to loosen, card and remove impurities from the cotton (fiber) rolls sent by the previous process or the oil cotton (chemical fiber) layer supplied by the cotton box, so that all the coiled cotton loops become It is basically straight single fiber, and in the process, the broken seeds, impurities and short fibers left over from the cleaning process are removed, and then slivers of certain specifications are integrated and stored in cotton cylinders for use in the drawing process. Textile machine...

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Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the present invention provides a carding machine cylinder wall panel support sand casting mold and its process method, aiming at the shortcomings of large textile machine products with large area and uneven wall thickness in the prior art, in order to make The thick part of the product can be cooled rapidly at the same time as the thin part, and cooling iron with a certain thickness is placed on the thick part to achieve the heat dissipation effect, so that the thick part and the thin part can be cooled at the same time; further, 3D simulation casting is used to calculate The deformation coefficient is determined. When the mold is opened, the deformation coefficient is artificially adjusted and designed on the mold, so that the flatness of the product after cooling is close to the 1mm required by the customer; for the lack of looseness in the ribs and inner ribs of the textile machine, the uneven wall thickness is used. Set up multiple feeding risers to control the looseness of the product; in view of the large area and uneven wall thickness of the product, the aluminum liquid may not flow during the casting process, resulting in insufficient product scrapping, and two-way gates and multi-way ring inner The sprue is used for casting, which shortens the casting time and solves the uneven flow rate phenomenon caused by the large area and uneven wall thickness of the product

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