Design improvement of 5kN screw-type semi-continuous casting machine (2)
July 19, 2022
2. Improvements to the structure of the guide slider
image 3
1. Guide slider 2. Guide post
(1) Design defects of the original guide slider
Figure 3a shows the guiding structure of the original casting machine. Since the casting machine has a long casting length (generally 6-7 m), in order to reduce the bending deformation of the guide post, a support frame is often installed between the casting well wall and the guide post. It is ensured that the guide slider can slide on the guide post without interfering with the support frame, and the structure shown in Fig. 3a is often used. In this structure, a semi-circular cloth bakelite is used as the guide slide. After long-term use, the slippage of the slide plate increases due to wear and the guide column, and there is no compensation, which causes the casting platform to shake, so that the casting machine cannot produce a qualified product.
(2) Improved structure
Because the casting length of the machine is only 2m, the circular guide column structure is still used, but the guide slide is improved and the structure is improved (see Figure 3b). The guide post support frame is removed, and the guide slider is changed to a structure symmetrically distributed along the center of the guide post. This structure increases the stability of the casting platform when it rises, and can pass the eccentric shaft of the slider when the guide slide plate is worn in the slider. The structure is adjusted, and a guide wheel is added to uniformly apply the weight of the casting platform to the guide post. In order to reduce the wear of the skateboard, a dry oil lubrication point is added on the slider to reduce the friction coefficient of the skateboard and prolong the service life of the skateboard.
Through the above structural improvement measures, the performance of the screw type semi-continuous casting machine is obviously improved, and the work reliability and continuity are greatly improved.
For more articles, please refer to "Metal Processing" Cold Processing 2008 No. 1
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