Die-casting mold and die-casting apparatus
By modifying the guide pillars to a square column shape and leaving a gap between the guide pillars and the guide groove, the problem of guide pillars burning at high temperatures was solved, thereby improving the reliability and service life of the mold and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN SANRUI DIE CASING CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-07-21
AI Technical Summary
The guide pillars of existing die-casting molds are prone to burning out at high temperatures, making it difficult to open and close the mold, and making it difficult to reuse, resulting in waste and loss.
Square column-shaped guide pillars are used, with the shrinkage surface of the guide pillars facing the shrinkage center of the die-casting mold, and a gap is left between the guide pillars and the guide grooves to ensure that the guide pillars can bend in the expected direction during thermal expansion and contraction, avoiding high-temperature burn-out.
It improves the reliability and service life of the mold, reduces production costs, and ensures the stability and reusability of the mold under high temperature conditions.
Smart Images
Figure CN224525967U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold technology, and in particular to a die-casting mold and die-casting equipment. Background Technology
[0002] To ensure smooth mold opening and closing and prevent displacement or misalignment during use, molds are typically equipped with guide pillars and guide sleeves for positioning. Currently, die-casting molds use circular guide pillars with a large contact area with the mold base. However, die-casting molds operate in the 150-250 degree Celsius range, and large die-casting molds, in particular, experience greater thermal shrinkage at high temperatures. This often leads to guide pillar burn-out, making mold opening and closing difficult and hindering reuse, resulting in significant waste and losses. Utility Model Content
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a die-casting mold and die-casting equipment that can avoid the high-temperature burning of guide pillars, improve mold reliability and service life, and reduce production costs.
[0004] On one hand, this utility model embodiment provides a die-casting mold, including an upper mold frame, a lower mold frame, and multiple guide pillars. The lower mold frame is located below the upper mold frame and is provided with multiple guide grooves; the guide pillars have a square column structure with one side serving as a shrinkage surface, the first end of the guide pillar is connected to the upper mold frame, the second end of the guide pillar can be inserted into the corresponding guide groove, the shrinkage surface of the guide pillar faces the shrinkage center of the die-casting mold, and a gap is left between the shrinkage surface of the guide pillar and the inner wall of the guide groove.
[0005] According to some embodiments of this utility model, mounting grooves are provided at the four lower corners of the upper mold frame, and the first end of the guide post is located in the mounting groove.
[0006] According to some embodiments of the present invention, the first end of the guide post is provided with a screw hole, and the guide post is installed in the mounting groove by a first fastener passing through the screw hole.
[0007] According to some embodiments of the present invention, a keyway is provided on the inner side of the guide post, and the extension direction of the keyway is perpendicular to the movement direction of the guide post.
[0008] According to some embodiments of the present invention, a guide sleeve is embedded in the guide groove, and the guide sleeve is in clearance fit with the guide post.
[0009] According to some embodiments of this utility model, the second end of the guide post and the top of the guide sleeve are both provided with a chamfered structure.
[0010] According to some embodiments of the present invention, the guide groove wall is provided with a limiting groove, the guide sleeve has a T-shaped limiting part, and the T-shaped limiting part is adapted to and connected with the limiting groove.
[0011] According to some embodiments of the present invention, the guide sleeve is provided with a mounting hole, and the guide sleeve is installed in the guide groove by a second fastener passing through the mounting hole.
[0012] According to some embodiments of the present invention, a cavity is provided on the lower mold frame and adjacent to the guide groove. The opening of the cavity is located at the top of the lower mold frame. The cavity and the guide groove are connected through an assembly hole. A fixing post is installed in the cavity. The fixing post is provided with a connecting hole adapted to the second fastener. The position of the connecting hole is adapted to the assembly hole.
[0013] On the other hand, this utility model embodiment also provides a die-casting device, including the above-mentioned die-casting mold.
[0014] This utility model has at least the following beneficial effects:
[0015] This die-casting mold includes an upper mold base, a lower mold base, and multiple guide pillars. The lower mold base has multiple guide grooves. The guide pillars are square-column shaped with one side serving as a shrinkage surface. The first end of each guide pillar is connected to the upper mold base, and the second end can be inserted into a corresponding guide groove. The shrinkage surface of each guide pillar faces the shrinkage center of the die-casting mold, and a gap is left between the shrinkage surface and the inner wall of the guide groove. By modifying the circular guide pillars into square guide pillars and aligning their shrinkage surfaces with the shrinkage center of the die-casting mold, the guide pillars can bend in the desired direction, ensuring controllable shrinkage direction. The gap between the guide pillars and the lower mold base in the shrinkage direction of the die-casting mold prevents the shrinkage surface from contacting the lower mold base even if the guide pillars bend in the shrinkage direction due to thermal expansion and contraction, thus avoiding high-temperature burn-in of the guide pillars, improving mold reliability and service life, and reducing production costs.
[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0018] Figure 1 This is a schematic diagram of the structure of the die-casting mold according to an embodiment of the present utility model;
[0019] Figure 2 for Figure 1 The diagram shows the structure of the upper and lower mold bases of the die-casting mold.
[0020] Figure 3 for Figure 1 The diagram shows the structure of the lower mold frame and guide pillars of the die-casting mold.
[0021] Figure 4 for Figure 1 One of the schematic diagrams of the guide pillar structure of the die-casting mold is shown;
[0022] Figure 5 for Figure 1 The second schematic diagram of the guide pillar structure of the die-casting mold is shown.
[0023] Figure 6 for Figure 1 The diagram shows the structure of the guide sleeve of the die-casting mold;
[0024] Figure 7 for Figure 1 The diagram shows the structure of the lower mold frame of the die-casting mold;
[0025] Figure 8 for Figure 7 A magnified view of part A of the lower mold base of the die-casting mold is shown.
[0026] Figure label:
[0027] Upper mold base 100, mounting groove 110, lower mold base 200, gap 210, guide groove 220, cavity 221, limiting groove 222, assembly hole 223, fixing post 224, guide post 300, screw hole 310, keyway 320, guide sleeve 400, mounting hole 410. Detailed Implementation
[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0030] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first," "second," etc., are used in the description, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.
[0031] In the description of this utility model, unless otherwise explicitly defined, the terms "setting", "installing", "connecting", "linking", etc. should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in combination with the specific content of the technical solution.
[0032] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments:
[0033] Please refer to Figures 1 to 3 This embodiment discloses a die-casting mold, including an upper mold base 100, a lower mold base 200, and guide pillars 300. The lower mold base 200 is located below the upper mold base 100 and is provided with multiple guide grooves 220. The guide pillars 300 have a square column structure, with one side serving as a shrinkage surface. The first end of the guide pillar 300 is connected to the upper mold base 100. The guide pillars 300 and guide grooves 220 are arranged in a one-to-one correspondence. The second end of the guide pillar 300 can be inserted into the corresponding guide groove 220. The shrinkage surface of the guide pillar 300 faces the shrinkage center of the die-casting mold. The shrinkage center can be determined based on historical experience, such as the geometric center of the die-casting mold. A gap 210 is left between the inner side of the guide pillar 300 and the inner wall of the guide groove 220. It should be noted that the shrinkage surface of the guide pillar 300 is the side corresponding to the bending direction of the guide pillar 300 when subjected to thermal expansion and contraction. The circular guide post is modified into a square guide post, and the shrinkage surface of the guide post 300 is aligned with the shrinkage center of the die-casting mold. This allows the guide post 300 to bend in the expected direction, ensuring controllable shrinkage direction. A gap 210 is left between the guide post 300 and the lower mold base 200 in the shrinkage direction of the die-casting mold. Even if the guide post 300 bends in the shrinkage direction due to thermal expansion and contraction, the shrinkage surface of the guide post 300 will not contact the lower mold base 200, avoiding the high-temperature burn-in of the guide post 300, improving mold reliability and service life, and reducing production costs.
[0034] Please refer to Figure 2 The upper mold base 100 has mounting grooves 110 at each of its four lower corners, and the first end of the guide post 300 is located in the mounting groove 110. The upper mold base 100 has mounting grooves 110 at each of its four lower corners, and the guide post 300 is fixed in these mounting grooves 110 by embedding, ensuring the stable installation of the guide post 300 and making the mold more reliable and durable during use.
[0035] Please refer to Figure 4 and Figure 5 The guide post 300 has a screw hole 310 at its first end. The guide post 300 is installed in the mounting groove 110 by a first fastener passing through the screw hole 310. The screw hole 310 at the first end of the guide post 300 allows for easy installation and fixation of the guide post 300 in the mounting groove 110, thereby achieving precise positioning and stable connection between the guide post 300 and the mounting groove 110.
[0036] Please refer to Figure 4 and Figure 5 The guide post 300 has a keyway 320 on its inner side, and the extension direction of the keyway 320 is perpendicular to the movement direction of the guide post 300. The keyway 320 on the inner side of the guide post 300 ensures that the screw hole 310 that mates with it can be firmly installed and accurately positioned, thereby improving assembly efficiency and the stability of the overall structure, and preventing the guide post 300 from loosening or shifting vertically.
[0037] Please refer to Figure 4 and Figure 6 A guide sleeve 400 is embedded in the guide groove 220. Both the second end of the guide post 300 and the top of the guide sleeve 400 have chamfered structures. The guide sleeve 400 and the guide post 300 are fitted with a clearance fit. The chamfered structure design of the bottom of the guide post 300 and the top of the guide sleeve 400 makes the fit between the guide post 300 and the guide sleeve 400 smoother, reducing resistance during mold opening and closing, and ensuring stability and operational efficiency during use.
[0038] Please refer to Figure 6 and Figure 7 The guide groove 220 has a limiting groove 222 on its groove wall, and the guide sleeve 400 has a T-shaped limiting part that is adapted to and connected to the limiting groove 222. The T-shaped limiting part of the guide sleeve 400 can provide better guidance and positioning stability during assembly, ensuring precise alignment and tight fit with the guide groove 220, thereby improving the overall assembly accuracy and stability of the mold and reducing misalignment and vertical displacement of the guide sleeve 400.
[0039] Please refer to Figure 6 The guide sleeve 400 is provided with a mounting hole 410, and a second fastener passing through the mounting hole 410 is installed in the guide groove 220. The guide sleeve 400 is installed in the guide groove 220 through the mounting hole 410, so that the guide sleeve 400 can be firmly fixed in the guide groove 220, thereby ensuring that the guide sleeve 400 plays an accurate guiding and stable positioning role, effectively improving the accuracy and reliability of mold guiding.
[0040] Please refer to Figure 7 and Figure 8A cavity 221 is provided on the lower mold frame 200 adjacent to the guide groove 220. The opening of the cavity 221 is located at the top of the lower mold frame 200. The cavity 221 and the guide groove 220 are connected through an assembly hole 223. A fixing post 224 is installed in the cavity 221. The fixing post 224 is provided with a connecting hole adapted to the second fastener. The position of the connecting hole is adapted to the assembly hole 223. Due to limited space, the groove wall of the guide groove 220 cannot be drilled. By embedding the fixing post 224 on the lower mold frame 200 adjacent to the guide groove 220 and tapping the fixing post 224 to process the connecting hole, the guide sleeve 400 can be reliably installed by connecting with the second fastener through the connecting hole.
[0041] This embodiment also provides a die-casting device, including the die-casting mold described above.
[0042] The guide post 300 is installed in the mounting groove 110 through the screw hole 310, and the guide sleeve 400 is installed in the guide groove 220 through the mounting hole 410. During mold closing, the guide post 300 moves along the guide groove 220, ensuring that the relative positions of the upper mold base 100 and the lower mold base 200 do not shift, thus achieving precise guidance during mold closing. The circular guide post is improved to a square guide post, and the contraction surface of the guide post 300 is aligned with the contraction center of the die-casting mold, allowing the guide post 300 to bend in the expected direction, ensuring controllable contraction direction. A gap 210 is left between the guide post 300 and the lower mold base 200 in the contraction direction of the die-casting mold. Even if the guide post 300 bends in the contraction direction due to thermal expansion and contraction, the contraction surface of the guide post 300 will not contact the lower mold base 200, avoiding the high-temperature burning of the guide post 300, improving mold reliability and service life, and reducing production costs.
[0043] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A die-casting mold, characterized in that, include: Upper mold frame (100); The lower mold frame (200) is located below the upper mold frame (100) and is provided with a plurality of guide grooves (220). Multiple guide pillars (300) are provided. Each guide pillar (300) has a square column structure and one side is used as a shrinkage surface. The first end of each guide pillar (300) is connected to the upper mold frame (100). The second end of each guide pillar (300) can be inserted into the corresponding guide groove (220). The shrinkage surface of each guide pillar (300) faces the shrinkage center of the die-casting mold. A gap (210) is left between the shrinkage surface of each guide pillar (300) and the inner wall of the guide groove (220).
2. The die-casting mold according to claim 1, characterized in that, The upper mold frame (100) is provided with mounting grooves (110) at the four lower corners, and the first end of the guide post (300) is located in the mounting groove (110).
3. The die-casting mold according to claim 2, characterized in that, The first end of the guide post (300) is provided with a screw hole (310), and the guide post (300) is installed in the mounting groove (110) by a first fastener passing through the screw hole (310).
4. The die-casting mold according to claim 1 or 3, characterized in that, The guide post (300) has a keyway (320) on its inner side, and the extension direction of the keyway (320) is perpendicular to the movement direction of the guide post (300).
5. The die-casting mold according to claim 1, characterized in that, A guide sleeve (400) is embedded in the guide groove (220), and the guide sleeve (400) is in clearance fit with the guide post (300).
6. The die-casting mold according to claim 5, characterized in that, Both the second end of the guide post (300) and the top of the guide sleeve (400) are provided with a chamfered structure.
7. The die-casting mold according to claim 5, characterized in that, The guide groove (220) has a limiting groove (222) on its groove wall, and the guide sleeve (400) has a T-shaped limiting part, which is adapted to and connected to the limiting groove (222).
8. The die-casting mold according to claim 5, characterized in that, The guide sleeve (400) is provided with a mounting hole (410), and the guide sleeve (400) is installed in the guide groove (220) by a second fastener passing through the mounting hole (410).
9. The die-casting mold according to claim 8, characterized in that, A cavity (221) is provided on the lower mold frame (200) and adjacent to the guide groove (220). The opening of the cavity (221) is located at the top of the lower mold frame (200). The cavity (221) and the guide groove (220) are connected through an assembly hole (223). A fixing post (224) is installed in the cavity (221). The fixing post (224) is provided with a connecting hole adapted to the second fastener. The position of the connecting hole is adapted to the assembly hole (223).
10. A die-casting equipment, characterized in that, Including the die-casting mold as described in any one of claims 1 to 9.