船用管件静压成型模具
By designing a hydrostatic forming mold for marine pipe fittings and utilizing the combination of a mold closing mechanism and a media injection channel, high-precision forming and corrosion resistance of marine pipe fittings were achieved. This solved the problems of uneven wall thickness and insufficient corrosion resistance in existing technologies and improved the forming effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGYIN BOWAY MASCH COMPLETE EQUIP CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies lack hydrostatic molding dies for marine pipe fittings that can inject fluid media and provide axial tensile force, resulting in uneven wall thickness and insufficient corrosion resistance during the molding process.
A hydrostatic forming mold including an upper mold and a lower mold was designed. The coaxiality is ensured by the mold closing mechanism, the axial tension is provided by the core and the tensioning component, and the mold closing force and the medium pressure are adjusted in real time by the medium injection channel and the industrial control system. The forming process is monitored by the acoustic emission sensor to ensure the wall thickness accuracy and uniformity.
It significantly improves the wall thickness accuracy and corrosion resistance of pipe fittings, extends the service life of molds, and reduces material flow stress and residual stress.
Smart Images
Figure CN224508174U_ABST
Abstract
Claims
1. A hydrostatic forming mold for marine pipe fittings, comprising an upper mold (11) and a lower mold (12), wherein the upper mold (11) and the lower mold (12) are closed to form a closed cavity (13), and the upper mold (11) and the lower mold (12) are relatively moved and locked together by a mold closing mechanism, wherein a core (14) is provided in the cavity (13). characterized in that The end of the core (14) inside the cavity (13) is provided with a tension member (30). The tension member (30) passes through the side wall of the lower mold (12) and is connected to the pipe inside the cavity (13). The tension member (30) is connected to a power device on the outside of the lower mold (12). The power device causes the tension member (30) to generate an axial tension on the pipe. The cavity (13) is connected to a medium injection channel (40).
2. A pipe for marine use hydrostatic forming die according to claim 1, characterized in that, The mold closing mechanism includes a guide rod (21) vertically arranged between the upper mold (11) and the lower mold (12). The upper mold (11) is connected to a mold closing hydraulic cylinder (20) via a gantry frame (10). The mold closing hydraulic cylinder (20) is electrically connected to the industrial control board via a reversing valve.
3. A pipe for marine use hydrostatic forming die according to claim 2, characterized in that, The gantry frame (10) is provided with a guide rod (21) through the upper mold (11). One end of the guide rod (21) is fixed to the gantry frame (10), and the other end of the guide rod (21) is connected to the lower mold (12).
4. The tubular hydrostatic forming die according to claim 1, wherein, The cavity (13) includes a variable diameter cavity (15), which is located at both ends of the core (14) and coaxial with the core (14). The stretching member (30) includes a piston end (32) located in the variable diameter cavity (15), the diameter of the piston end (32) being greater than the diameter of the core (14). The end of the stretching member (30) away from the piston end (32) is connected to a stretching hydraulic cylinder (31), which is electrically connected to the industrial control board through a reversing valve.
5. A pipe for marine use hydrostatic forming die according to claim 4, characterized in that, The piston end (32) of the tension member (30) is provided with a frustum guide sleeve (33), which points to the middle of the cavity (13) along the direction from the lower bottom surface to the upper bottom surface.
6. The tubular hydrostatic forming die according to claim 4, wherein, The piston end (32) of the tension member (30) is provided with a concave structure (34), which overlaps the two ends of the core (14), and the piston end (32) can reciprocate along the axial direction of the core (14).
7. The tubular hydrostatic forming die according to claim 1, wherein, The core (14) is embedded with an acoustic emission sensor (16), which is electrically connected to the industrial control board.
8. The tubular hydrostatic forming die according to claim 1, wherein, The medium injection channel (40) includes an inlet (41), an annular equalizing groove (42), and a diversion channel (43) connected in sequence.
9. The tubular hydrostatic forming die according to claim 1, wherein, The core (14) is a cylindrical body, and a heating device (50) is provided inside the core (14). Cooling pipes (51) are embedded in the upper mold (11) and / or the lower mold (12).
10. The tubular hydrostatic forming die according to claim 1, wherein, A turbine flow meter (44) and a pressure sensor are connected at the inlet (41) of the medium injection channel (40), and both the turbine flow meter (44) and the pressure sensor are electrically connected to the industrial control board.