A mold having a stable mold core
By optimizing the mold structure and adopting inverted bridge groups and ramp support mold core components, the molding quality problem caused by mold core instability was solved, and the stability of the mold core and the mold life were extended.
Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LINQU COUNTY HUATAI MOULD CO LTD
- Filing Date
- 2025-09-11
- Publication Date
- 2026-07-14
AI Technical Summary
Unstable mold cores lead to poor product molding quality, dimensional deviations, uneven wall thickness, and shortened mold life. Micro-cracks may appear on the surface of the mold core, and it may even break.
By optimizing the mold structure, adopting a detachable upper and lower mold design, and setting up inverted bridge groups and ramps to support the mold core components, the impact of materials is reduced and the stability of the mold core is improved.
It improves the stability of the mold core, ensures the quality of the finished product, extends the service life of the mold, and prevents the mold core from wobble and break.
Smart Images

Figure CN224487191U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of extrusion die technology, specifically a die with a stable die core. Background Technology
[0002] The most direct impact of mold core instability is on product molding quality, and the problem will continue to amplify as the production process progresses. In terms of dimensional accuracy, the mold core will shift due to assembly gaps or thermal deformation, resulting in positional deviations from the mold cavity. This leads to problems such as dimensional deviations and uneven wall thickness in the molded product. At the same time, mold core instability will cause irreversible damage to the mold body and related components, significantly shortening the overall service life of the mold. As for the mold core itself, stress concentration caused by thermal deformation will lead to microcracks on the surface of the mold core. Long-term vibration will cause the cracks to gradually expand, eventually causing the mold core to break. Utility Model Content
[0003] The main technical problem to be solved by this utility model is to provide a mold with a stable mold core. This mold can improve the stability of each mold core in the mold and ensure the quality of the finished product through structural optimization.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0005] A mold with a stable core includes a detachable upper mold and a lower mold. The upper mold has a feed port assembly extending through both sides on one side, and a core assembly on the other side. The feed port assembly includes two symmetrically arranged first feed ports, and second and third feed ports symmetrically arranged on both sides of the two first feed ports. A fourth, fifth, sixth, seventh, eighth, and ninth feed port are provided between the two third feed ports. An inverted bridge assembly is provided near the core assembly of each feed port assembly. The core assembly is mounted on the inverted bridge assembly, and a ramp is provided at the connection between the core assembly and the feed port assembly.
[0006] The following are further optimizations of the above technical solution by this utility model:
[0007] The mold core assembly includes a first mold core, a second mold core, a third mold core, a fourth mold core, and a fifth mold core.
[0008] Further optimization: The first mold core is set between the four inverted bridges adjacent to the eighth and ninth feed ports, and the second mold core is set between the four inverted bridges adjacent to the fifth and sixth feed ports.
[0009] Further optimization: The fourth mold core is set between the seven inverted bridges adjacent to the first, second and ninth feed ports, and the fifth mold core is set between the five inverted bridges adjacent to the first, second and fourth feed ports.
[0010] Further optimization: A welding chamber is provided on the side of the lower mold close to the upper mold, and a lower mold cavity is provided in the middle of the welding chamber.
[0011] This utility model adopts the above-mentioned technical solution, which is ingenious in conception and reasonable in structure. By designing and optimizing the arrangement of the inverted bridge, the stability of the mold core assembly can be improved. The slope set can reduce the impact of materials on the mold core assembly, further improve the stability of the mold core assembly, thereby improving the quality of the formed aluminum profile and making it convenient to use.
[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0014] Figure 2 This is a schematic diagram of the core assembly structure in an embodiment of the present invention;
[0015] Figure 3 This is a side view of the upper mold in an embodiment of the present invention;
[0016] Figure 4 This is a schematic diagram of another side of the upper mold in an embodiment of this utility model;
[0017] Figure 5 This is a schematic diagram of the slope structure in an embodiment of the present invention;
[0018] Figure 6 This is a schematic diagram of the lower mold structure in an embodiment of the present invention. In the figure: 1. Upper mold; 101. First feed inlet; 102. Second feed inlet; 103. Third feed inlet; 104. Fourth feed inlet; 105. Fifth feed inlet; 106. Sixth feed inlet; 107. Seventh feed inlet; 108. Eighth feed inlet; 109. Ninth feed inlet; 110. Ramp; 111. Inverted bridge assembly; 112. First mold core; 113. Second mold core; 114. Third mold core; 115. Fourth mold core; 116. Fifth mold core; 2. Lower mold; 201. Welding chamber; 202. Lower mold cavity. Detailed Implementation
[0019] like Figure 1-6As shown: A mold with a stable mold core includes a detachable upper mold 1 and a lower mold 2. The upper mold 1 has a feed port assembly that runs through both sides of the upper mold 1 on one side, and a mold core assembly is provided on the other side of the upper mold 1. The feed port assembly includes two symmetrically arranged first feed ports 101. A second feed port 102 and a third feed port 103 are symmetrically arranged on both sides of the two first feed ports 101. A fourth feed port 104, a fifth feed port 105, a sixth feed port 106, a seventh feed port 107, an eighth feed port 108, and a ninth feed port 109 are provided between the two third feed ports 103. An inverted bridge group 111 is provided at the position of the feed port assembly near the mold core assembly. The mold core assembly is set on the inverted bridge group 111, and a ramp 110 is provided at the position where the mold core assembly is connected to the feed port assembly.
[0020] In this embodiment, when the material flows from the inlet assembly, it flows into the interior of the mold under the action of the ramp 110, which can prevent the mold core assembly from being directly impacted by the material and deformed, thereby ensuring the wall thickness of the intermediate rib of the formed aluminum alloy profile and making it convenient to use.
[0021] The mold core assembly includes a first mold core 112, a second mold core 113, a third mold core 114, a fourth mold core 115, and a fifth mold core 116.
[0022] The first mold core 112 is disposed between the four inverted bridges adjacent to the eighth feed port 108 and the ninth feed port 109, and the second mold core 113 is disposed between the four inverted bridges adjacent to the fifth feed port 105 and the sixth feed port 106.
[0023] The fourth mold core 115 is disposed between the seven inverted bridges adjacent to the first feed port 101, the second feed port 102 and the ninth feed port 109, and the fifth mold core 116 is disposed between the five inverted bridges adjacent to the first feed port 101, the second feed port 102 and the fourth feed port 104.
[0024] This design, by setting the core assembly with four, five, and seven inverted bridges, can provide good support for the core assembly, greatly improve the bending resistance of the core, ensure the quality and yield of the finished aluminum profile, and facilitate use.
[0025] The lower mold 2 has a welding chamber 201 on the side near the upper mold 1, and a lower mold cavity 202 is formed in the middle of the welding chamber 201.
[0026] In use, the design of the mold core assembly and the feed port assembly ensures that each mold core has multiple inverted bridge supports. Larger mold cores have more inverted bridges for support, preventing the mold core assembly from swaying and affecting the quality of the formed aluminum profile. The designed ramp 110 prevents material from directly squeezing the mold core assembly, further preventing swaying and facilitating use. For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods based on the teachings of this utility model, without departing from the principles and spirit of this utility model, still fall within the protection scope of this utility model.
Claims
1. A mold with a stable core, characterized in that: The upper mold (1) and lower mold (2) are detachable and installable. The upper mold (1) has a feed port assembly that runs through both sides of the upper mold (1) on one side and a mold core assembly on the other side. The feed port assembly includes two symmetrically arranged first feed ports (101). The two first feed ports (101) have a second feed port (102) and a third feed port (103) symmetrically arranged on both sides. The two third feed ports (103) have a fourth feed port (104), a fifth feed port (105), a sixth feed port (106), a seventh feed port (107), an eighth feed port (108), and a ninth feed port (109) between them. The feed port assembly is provided with an inverted bridge group (111) near the mold core assembly. The mold core assembly is set on the inverted bridge group (111) and a ramp (110) is provided at the position where the mold core assembly is connected to the feed port assembly.
2. The mold with a stable core according to claim 1, characterized in that: The mold core assembly includes a first mold core (112), a second mold core (113), a third mold core (114), a fourth mold core (115), and a fifth mold core (116).
3. A mold with a stable core according to claim 2, characterized in that: The first mold core (112) is located between four inverted bridges adjacent to the eighth feed port (108) and the ninth feed port (109), and the second mold core (113) is located between four inverted bridges adjacent to the fifth feed port (105) and the sixth feed port (106).
4. A mold with a stable core according to claim 3, characterized in that: The fourth mold core (115) is located between the seven inverted bridges adjacent to the first feed port (101), the second feed port (102) and the ninth feed port (109), and the fifth mold core (116) is located between the five inverted bridges adjacent to the first feed port (101), the second feed port (102) and the fourth feed port (104).
5. A mold with a stable core according to claim 4, characterized in that: The lower mold (2) has a welding chamber (201) on the side close to the upper mold (1), and a lower mold cavity (202) is formed in the middle of the welding chamber (201).