一种材料预成型用冷挤压装置
By driving the horizontal and vertical movement of the wedge block with a threaded rod, combined with a limiting structure and wear-resistant liner, the problems of ejection force fluctuation and friction in the cold extrusion device are solved, and the stable ejection and efficient removal of the workpiece are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU YINTAO TECHNOLOGY DEVELOPMENT CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-17
AI Technical Summary
The existing cold extrusion equipment has uneven extrusion speed during the servo motor speed adjustment stage, which leads to fluctuations in ejection force. This may cause ejection jamming or workpiece ejection. In addition, the gap between the piston and the air pressure groove is prone to friction, resulting in reduced sealing and affecting workpiece removal.
The lower wedge block is driven to move horizontally by a threaded rod, and the upper wedge block moves vertically by being squeezed by an inclined plane, pushing the top plate to eject the workpiece. Lateral displacement is prevented by limit blocks and limit grooves, and wear-resistant liners made of copper alloy are used to reduce the coefficient of friction.
This method achieves stable ejection of the workpiece, prevents lateral displacement, reduces friction, improves workpiece removal efficiency and safety, and reduces operational difficulty and cost.
Smart Images
Figure CN224508363U_ABST
Abstract
Claims
1. A cold extrusion device for material preforming comprising a machine base (1), characterized in that: The upper end of the machine base (1) is provided with a lower mold (2), the upper end of the lower mold (2) is equipped with a hydraulic mechanism (3), the driving end of the hydraulic mechanism (3) is provided with an upper mold (4), the inner side of the upper part of the machine base (1) is provided with an installation groove (11), the installation groove (11) is equipped with a workpiece ejection assembly (6), and a control box (5) is installed at one end of the machine base (1). The workpiece ejection assembly (6) includes a threaded rod (61), with both ends of the threaded rod (61) mounted in the middle of the mounting groove (11) via bearings. A crank handle (62) is provided at one outer end of the threaded rod (61). A movable block (63) is threadedly connected to the outer wall of the threaded rod (61) near its outer end. A lower wedge block (65) is provided on the top side of the movable block (63), and a wear-resistant liner (651) is provided on the inclined surface of the lower wedge block (65). The mounting groove (11) Both ends of the top side are provided with through holes (13), and guide rods (66) are slidably connected in the through holes (13). The top of the guide rod (66) is provided with a top plate (67), and the bottom of the guide rod (66) is provided with an upper wedge block (69). The inclined surface of the upper wedge block (69) is provided with a second wear-resistant liner (692). A spring (68) is provided between the upper wedge block (69) and the top side of the mounting groove (11). The springs (68) are all sleeved on the outside of the guide rod (66).
2. A cold extrusion device for preforming a material according to claim 1, characterized in that: The lower mold (2) has a mold cavity (21) on its inner side, and a fitting groove (14) is provided at the bottom of the mold cavity (21). The top plate (67) is embedded in the fitting groove (14).
3. A cold extrusion device for material preforming according to claim 1, characterized in that: The two side walls of the movable block (63) are slidably connected to the grooves on the side walls of the mounting groove (11).
4. A cold extrusion device for material preforming according to claim 1, characterized in that: The mounting groove (11) is fixedly connected to a travel limit plate (64) near the inner wall, and the travel limit plate (64) is located at the other end of the threaded rod (61).
5. A cold extrusion device for material preforming according to claim 1, characterized in that: The upper wedge block (69) has a fixed connection between the two side walls of the two sides of the wedge block (69), and the two side walls above the mounting groove (11) have a limit groove (12). The outer wall of the limit block (691) and the inner wall of the limit groove (12) are slidably connected.
6. A cold extrusion device for material preforming according to claim 1, characterized in that: The inclined surface of the lower wedge block (65) slides in conjunction with the inclined surface of the upper wedge block (69), causing the upper wedge block (69) to push out of the top plate (67).
7. A cold extrusion device for material preforming according to claim 1, characterized in that: Both the first wear-resistant liner (651) and the second wear-resistant liner (692) are made of copper alloy material.