2results about How to "Overcoming deformation" patented technology

This invention discloses a large-arc bend injection mold and molding method, belonging to the field of injection molding technology. The mold includes a moving mold, a fixed mold, and a core mold with a circular arc core; it also includes a demolding drive mechanism for driving the core mold and product to generate a first displacement away from the fixed mold; and a pointer-type rotary demolding mechanism, which includes a pointer push rod and a push ring rotating around the axis of the circular arc core. During demolding, after the product is lifted with the core mold, the pointer push rod drives the push ring to swing along the circular arc path to push the product out. This invention also reduces the covering force by performing pre-demolding through an assisted demolding mechanism and ensures the stability of the core mold during injection molding using a core positioning mechanism. This invention replaces the traditional hot bending process with one-time injection molding, solving the problems of low production efficiency, poor roundness, and easy cracking caused by thermal stress in existing technologies for large-arc bend pipes, significantly improving the geometric accuracy and operational reliability of the product, and is particularly suitable for ultra-high voltage converter valve cooling system pipelines.

The utility model provides a sheet attaching device used for attaching a sheet to a target part. The sheet attaching device comprises a sheet carrying station, a sheet attaching station and a sheet attaching station, a target member mounting station; the first sheet positioning device is configured to be capable of moving to a sheet carrying station and acquiring a first position signal of a sheet on the sheet carrying station; the sheet picking device is configured to move and pick up the sheet according to the first position signal of the sheet, and the sheet picking device is further configured to be capable of moving to the target component carrying station and attaching the sheet to the target component on the target component carrying station. An apparatus of the utility model; and the problem of unnecessary deformation of the sheets caused by manual operation is avoided. Moreover, the sheets can be accurately positioned and picked in the sheet picking stage, and the accurate sheet attaching operation can be generally carried out after the sheets are accurately picked.