Thermosetting DMC rotating shaft product pre-embedded bracket structure capable of avoiding cracking

Abstract

The invention discloses a thermosetting DMC rotating shaft product pre-embedded bracket structure capable of avoiding cracking. The structure comprises a shell, a heat conducting block is arranged onone side in the shell, and supporting rods are uniformly welded to one side of the heat conducting block. One end of each supporting rod is welded to the shell. First round holes are uniformly formedin one side of the interior of the shell. Second round holes are uniformly formed in one side of the interior of the shell. Two second clamping blocks are welded to one side in the shell and are clamped to the heat conducting block through second clamping grooves. When the device is used, the holding force of DMC materials on the two sides of the device is enhanced by forming the first round holesand the second round holes in the two sides of the shell, the bonding effect of the device and a rotating shaft is enhanced, and the phenomenon of bracket cracking during cooling of the rotating shaft is prevented; and the heat conducting block is arranged to enhance the heating effect in the device, so that the synchronization rate of the shrinkage degree of the device and the rotating shaft isimproved, the device is more stable, and local cracking of the device is prevented.

Description

technical field [0001] The invention relates to the technical field of auxiliary equipment for rotating shafts, in particular to a pre-embedded bracket structure for thermosetting DMC rotating shaft products that can avoid cracking. Background technique [0002] The rotating shaft, as the name implies, is the shaft that must be used to connect the main parts of the product and is used to bear both bending moment and torque in the rotating work. The shaft that bears the moment and bears the torque is called the shaft. The common shafts are: mobile phone shaft (clamshell or rotating screen mobile phone); notebook computer shaft; portable DVD shaft; LED desk lamp shaft; LCD display shaft; GPS and other car bracket shafts, etc. Shaft wear is a common equipment problem during the use of the shaft, mainly caused by the metal characteristics of the shaft: although the metal has high hardness, it has poor yield (cannot be restored after deformation), poor impact resistance, and poor...

AI Technical Summary

Problems solved by technology

[0002] The rotating shaft, as the name implies, is the shaft that must be used to connect the main parts of the product and is used to bear both bending moment and torque in the rotating work. The shaft that bears the moment and bears the torque is called the shaft. The common shafts are: mobile phone shaft (clamshell or rotating screen mobile phone); notebook computer shaft; portable DVD shaft; LED desk lamp shaft; LCD display shaft; GPS and other car bracket shafts, etc. Rotating shaft wear is a common equipment problem during the use of the shaft, which is mainly caused by the metal characteristics of the shaft: although the metal has high hardness, it has poor yield (cannot be restored after deformation), poor impact resistance, and poor fatigue resistance, so it is easy to cause Adhesive wear, abrasive wear, fatigue wear, fretting wear, etc. Most of the shaft wear is not easy to detect. Only when the machine has high temperature, large beating range, abnormal noise, etc., will it be noticed. Some drive shafts are worn causing machine downtime

[0003] When the rotating shaft product is produced, a pre-embedded bracket will be installed inside it. After the rotating shaft product is separated from the mold and cooled, due to the difference in thermal expansion coefficient of the two materials of the rotating shaft and the embedded bracket, the shrinkage degree of the embedded bracket and the rotating shaft product will be different, resulting in the combination of the two. The force will become worse, resulting in cracking of the embedded bracket during the test. Therefore, a pre-embedded bracket structure for thermosetting DMC shaft products that can avoid cracking is proposed.

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