A sand core mold

Abstract

The utility model discloses a kind of sand core mould, including respectively with bottom plate disassembly connection's upper die assembly and lower die assembly, upper die assembly includes upper cover, two first enclosing members, first connecting seat and a plurality of first cylinder, two first enclosing members are located in the circumferential side of first connecting seat and first cylinder, upper cover is located on first cylinder, lower die assembly includes two second enclosing members, second connecting seat, a plurality of second cylinder, a plurality of positioning blocks and a plurality of fixed blocks, two second enclosing members are located in the circumferential side of second connecting seat and second cylinder, the top of two second enclosing members is staggered to set a plurality of positioning blocks and a plurality of fixed blocks of disassembly connection, the components (such as first enclosing member, second enclosing member, first cylinder, second cylinder, positioning block etc.) of upper die assembly and lower die assembly are all using disassembly connection mode, it is convenient for quick assembly, disassembly and maintenance, reduce production maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of casting mold technology, and in particular to a sand core mold. Background Technology

[0002] Traditional mold manufacturing has significant technological limitations and maintenance challenges, specifically: long manufacturing cycles, susceptibility to structural deformation due to stress or temperature changes; excessive mold weight hindering precise operation in the core-making process; and systemic technical bottlenecks such as complex maintenance processes and high costs. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a sand core mold, which aims to solve the technical problems mentioned in the background art.

[0004] A sand core mold includes an upper mold assembly and a lower mold assembly that are detachably connected to a base plate;

[0005] The upper mold assembly includes an upper cover, two first enclosure members, a first connecting seat, and a plurality of first pillars. The top periphery of the first connecting seat is provided with a plurality of first pillars at intervals. The first connecting seat is detachably connected to the first pillars. The two first enclosure members are detachably connected. The first enclosure members are provided on the periphery of the first connecting seat and the first pillars, and a gap is formed between the two first enclosure members and the first connecting seat and the first pillars. The upper cover is provided on the first pillars, and the bottom periphery of the upper cover abuts against the two first enclosure members.

[0006] The lower mold assembly includes two second enclosure members, a second connecting seat, a plurality of second pillars, a plurality of positioning blocks, and a plurality of fixing blocks. The second connecting seat has a plurality of second pillars spaced apart on its top periphery. The second connecting seat is detachably connected to the second pillars. The two second enclosure members are detachably connected. The two second enclosure members are located on the periphery of the second connecting seat and the second pillars, and a gap is formed between the two second enclosure members and the second connecting seat and the second pillars. The tops of the two second enclosure members are staggered with a plurality of positioning blocks and a plurality of fixing blocks that are detachably connected. The positioning blocks and the fixing blocks extend toward the second pillars, and the positioning blocks and the fixing blocks abut against the adjacent second pillars respectively.

[0007] The beneficial effects of this utility model are:

[0008] All components of the upper and lower mold assemblies (such as the first enclosure, the second enclosure, the first column, the second column, and the positioning block) are connected by disassembly, facilitating quick assembly, disassembly, and maintenance, thus reducing production and maintenance costs. Key components such as the first column, the second column, the positioning block, and the fixing block can be replaced independently without replacing the entire mold, extending the mold's service life. Gaps are formed between the two first enclosures and the first connecting seat and the first column, and gaps are formed between the two second enclosures and the second connecting seat and the second column, effectively forming a sand core mold. Fixing blocks are set between adjacent positioning blocks, forming a staggered support layout for the second column. By adjusting the spacing or number of positioning blocks and fixing blocks, different sizes or shapes of sand cores can be accommodated, improving the mold's versatility. This sand core mold achieves high-efficiency production and long service life through its modular disassembly structure and rigid support of the double enclosures.

[0009] Furthermore, the outer walls of the first enclosure member are recessed at opposite ends to form a first positioning groove, the first positioning groove is adapted to the bottom plate, and the opposite ends of the first enclosure member are provided with a first positioning hole.

[0010] Furthermore, the bottom of the first connector is provided with a first reinforcing member, and the side of the first reinforcing member facing away from the first connector is provided with a second positioning hole, which is adapted to the base plate.

[0011] Furthermore, the outer walls of the second enclosure are recessed at opposite ends to form a second positioning groove, the second positioning groove is adapted to the bottom plate, the opposite ends of the second enclosure are provided with a third positioning hole, and the top surface of the second enclosure is provided with a plurality of fourth positioning holes at intervals.

[0012] Furthermore, the positioning block is provided with a first inclined surface and a first arc-shaped portion, part of the first arc-shaped portion abuts against the second column, the top surface of the positioning block is recessed to form a receiving groove, the bottom surface of the positioning block is provided with a fifth positioning hole, and the fourth positioning hole corresponds to the fifth positioning hole.

[0013] Furthermore, the fixing block is provided with a second inclined surface and a second arc-shaped portion, the first inclined surface and the second inclined surface are adapted to each other, the second arc-shaped portion abuts against the second column, and the bottom surface of the fixing block is provided with a sixth positioning hole, the fourth positioning hole and the sixth positioning hole are positioned corresponding to each other.

[0014] Furthermore, the bottom of the second connector is provided with a second reinforcing member, and the side of the second reinforcing member facing away from the second connector is provided with a seventh positioning hole, which is adapted to the base plate.

[0015] Furthermore, the first column and the second column are coaxially arranged.

[0016] Furthermore, both the upper mold assembly and the lower mold assembly are made of polylactic acid. Attached Figure Description

[0017] Figure 1 This is a top view of the upper mold assembly of this utility model;

[0018] Figure 2 This is a bottom view of the upper mold assembly of this utility model;

[0019] Figure 3 This is a structural schematic diagram of the upper mold assembly (excluding the upper cover) of this utility model;

[0020] Figure 4 This is a top view of the lower mold assembly of this utility model;

[0021] Figure 5 This is a bottom view of the lower mold assembly of this utility model;

[0022] Figure 6 This is a structural schematic diagram of the lower mold assembly (excluding the positioning block and fixing block) of this utility model;

[0023] Figure 7 This is a top view of the positioning block of this utility model;

[0024] Figure 8 This is a bottom view of the positioning block of this utility model;

[0025] Figure 9 This is a top view of the fixing block of this utility model;

[0026] Figure 10 This is a bottom view of the fixing block of this utility model.

[0027] In the figure: 1. Upper mold assembly; 11. Upper cover; 12. First enclosure; 121. First positioning groove; 13. First connecting seat; 131. First reinforcing member; 1311. Second positioning hole; 14. First column; 2. Lower mold assembly; 21. Second enclosure; 211. Second positioning groove; 212. Fourth positioning hole; 22. Second connecting seat; 221. Second reinforcing member; 2211. Seventh positioning hole; 23. Second column; 24. Positioning block; 241. First inclined part; 242. First arc-shaped part; 243. Receiving groove; 244. Fifth positioning hole; 25. Fixing block; 251. Second inclined part; 252. Second arc-shaped part; 253. Sixth positioning hole. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0029] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Furthermore, the various embodiments of the invention, the features within those embodiments, and the features of the embodiments may be freely combined without obvious conflict or contradiction.

[0031] A type of sand core mold, such as Figure 1 and Figure 10 As shown, it includes an upper mold assembly 1 and a lower mold assembly 2, which are respectively connected to the base plate via positioning pins.

[0032] Specifically, the upper mold assembly 1 includes an upper cover 11, two first enclosing members 12, a first connecting seat 13, and a plurality of first pillars 14. A plurality of first pillars 14 are spaced apart on the top periphery of the first connecting seat 13. The first connecting seat 13 is connected to the first pillars 14 via positioning pins. The two opposite ends of the two first enclosing members 12 are provided with first positioning holes (not shown). The two first positioning holes are connected by positioning pins to fix the two first enclosing members 12 relative to each other. The two first enclosing members 12 are located on the periphery 14 of the first connecting seat 13 and the first pillars, and a gap is formed between the two first enclosing members 12 and the first connecting seat 13 and the first pillars 14. The upper cover 11 is located on the first pillars 14, and the bottom periphery of the upper cover 11 abuts against the two first enclosing members 12. The two first enclosure components 12 are fixed with positioning pins through the first positioning holes, and the first column 14 is connected to the connecting seat 13 through positioning pins to ensure accurate alignment of each component during installation, reduce assembly errors, and improve efficiency. The two first enclosure components 12 are detachably connected through positioning pins, which facilitates internal inspection or replacement of damaged components (such as the first column 14) and reduces maintenance costs. The upper cover 11 is independently installed on the top of the first column 14, forming a partial closed space with the two first enclosure components 12, which facilitates the individual replacement or adjustment of the upper cover 11 assembly and improves modularity. The positioning pin connection replaces complex welding or riveting processes, reducing processing difficulty and cost. The upper mold assembly 1 achieves a balance between efficient assembly, stability, and maintainability through precise positioning structure, modular design, and strength optimization measures.

[0033] Specifically, the outer walls of the first enclosure 12 are recessed at opposite ends to form a first positioning groove 121, which is adapted to the base plate. The bottom of the first connecting seat 13 is provided with a first reinforcing member 131, and the side of the first reinforcing member 131 facing away from the first connecting seat 13 is provided with a second positioning hole 1311, which is adapted to the base plate. The first positioning groove 121 on the outer wall of the first enclosure 12 is adapted to the base plate, and the second positioning hole 1311 at the bottom of the first connecting seat 13 also cooperates with the base plate to achieve multi-level precise positioning and enhance the overall structural stability. The first reinforcing member 131 at the bottom of the first connecting seat 13 disperses stress concentration and enhances the deformation resistance of the connection.

[0034] Specifically, the lower mold assembly 2 includes two second enclosure parts 21, a second connecting seat 22, multiple second pillars 23, multiple positioning blocks 24, and multiple fixing blocks 25. Multiple second pillars 23 are spaced apart at the top periphery of the second connecting seat 22, and the second connecting seat 22 is connected to the second pillars 23 via positioning pins.

[0035] The two second enclosure members 21 are provided with third positioning holes (not shown) at opposite ends. The two third positioning holes are connected by positioning pins. The two second enclosure members 21 are located on the periphery of the second connecting seat 22 and the second column 23, and a gap is formed between the two second enclosure members 21 and the second connecting seat 22 and the second column 23. A plurality of fourth positioning holes 212 are provided at intervals on the top surface of the two second enclosure members 21. A plurality of positioning blocks 24 and a plurality of fixing blocks 25 are staggered on the top of the two second enclosure members 21 and connected by positioning pins. The positioning blocks 24 and fixing blocks 25 extend toward the second column 23, and the positioning blocks 24 and fixing blocks 25 respectively abut against the adjacent second column 23. The second column 23, the third positioning hole, and the fourth positioning hole 212 are connected by positioning pins to achieve modular and precise positioning, reduce assembly errors, and shorten installation time. The positioning block 24 and the fixing block 25 are staggered and abut against the second column 23 to enhance structural stability and prevent displacement during assembly. The positioning block 24 and the fixing block 25 extend to the adjacent second column 23 to form multiple supports and improve the overall resistance to deformation. The positioning pin connection structure with intervals (such as the second column 23 and the third positioning hole) allows for quick disassembly and maintenance to meet the needs of different mold replacements. The staggered layout of the positioning block 24 and the fixing block 25 provides flexible adjustment space and is compatible with various specifications of workpieces or process requirements.

[0036] Specifically, the positioning block 24 is provided with a first inclined surface 241 and a first arc-shaped portion 242. Part of the first arc-shaped portion 241 abuts against the second column 23. The top surface of the positioning block 24 is recessed to form a receiving groove 243. The bottom surface of the positioning block 24 is provided with a fifth positioning hole 244, and the fourth positioning hole 212 corresponds to the fifth positioning hole 244. The fixing block 25 is provided with a second inclined surface 251 and a second arc-shaped portion 252. The first inclined surface 241 is adapted to the second inclined surface 251. The second arc-shaped portion 252 abuts against the second column 23. The bottom surface of the fixing block 25 is provided with a sixth positioning hole 253, and the fourth positioning hole 212 corresponds to the sixth positioning hole 253. The first inclined portion 241 and the second inclined portion 251 abut against each other to form a tapered connection structure, while the first arc-shaped portion 241 and the second arc-shaped portion 252 abut against the second column 23 respectively. The fourth positioning hole 212 is connected to the fifth positioning hole 244 and the sixth positioning hole 253 respectively through positioning pins, so that the positioning block 24 and the fixing block 25 form a stable connection with the second enclosure 21 to ensure the structural stability of the second column 23. The receiving groove 243 is used to receive sand.

[0037] Specifically, the bottom of the second connecting seat 22 is provided with a second reinforcing member 221, and the opposite ends of the outer wall of the second enclosure 21 are recessed to form a second positioning groove 211, which is adapted to the base plate. The side of the second reinforcing member 221 facing away from the second connecting seat 22 is provided with a seventh positioning hole 2211, which is adapted to the base plate. The second positioning groove 211 and the seventh positioning hole 2211 are adapted to the base plate, realizing multi-level precise positioning and enhancing the overall structural stability. The second reinforcing member 221 at the bottom of the second connecting seat 22 disperses stress concentration and enhances the deformation resistance of the connection.

[0038] Specifically, the first column 14 and the second column 23 are coaxially arranged. After the sand core mold assembly made by the upper mold assembly 1 and the lower mold assembly 2 is completed, the first column 14 and the second column 23 form a coaxial whole.

[0039] Specifically, both the upper mold component 1 and the lower mold component 2 are made of polylactic acid. Using polylactic acid to make the upper mold component 1 and the lower mold component 2 ensures structural strength while making them lightweight and easy for personnel to operate.

[0040] In use, the first connecting seat 13 is fixed on the base plate, the first column 14 is connected to the first connecting seat 13, and the two first enclosure parts 12 are connected and fixed to the base plate through the first positioning groove 121 to enclose the first column 14 and the first connecting seat 13. Sand is added into the gap formed by the two first enclosure parts 12, the first column 14 and the first connecting seat 13. After the top cover 11 is closed, the entire upper component 1 is flipped over, and the base plate is separated from the first connecting seat 13 and the two first enclosure parts 12 respectively. Then, the first connecting seat 13, the first column 14 and the two first enclosure parts 12 are disassembled in sequence. The base plate is then placed at the bottom of the upper mold sand core and flipped over, thereby separating the top cover 11 from the upper mold sand core to form the upper mold sand core. The upper mold sand core is then heated and shaped.

[0041] The second connecting seat 22 is fixed on the base plate, and then the second column 23 is connected to the second connecting seat 22. Then the two second enclosure parts 21 are connected and fixed to the base plate through the second positioning groove 211 to enclose the second column 23 and the second connecting seat 22. First, the positioning block 24 abuts against the second column 23, and then the fixing block 25 abuts against the second column 23. Sand is added into the gap formed by the two second enclosure parts 21, the second column 23 and the second connecting seat 22. At this time, the sand also fills the receiving groove 243. Then the positioning block 24, the fixing block 25, the two second enclosure parts 21, the second column 23 and the second connecting seat 22 are disassembled in sequence to form the lower mold sand core. Subsequently, the lower mold sand core is heated and shaped, and then spliced ​​with the upper mold sand core.

[0042] In this invention, all components of the upper mold assembly 1 and the lower mold assembly 2 (such as the first enclosure 12, the second enclosure 21, the first column 14, the second column 23, the positioning block 24, etc.) are connected by positioning pins, which facilitates quick assembly, disassembly and maintenance, reducing production and maintenance costs. Key components such as the first column 14, the second column 23, the positioning block 24 and the fixing block 25 can be replaced independently without replacing the entire mold, thus extending the mold's service life. Gaps are formed between the two first enclosures 12 and the first connecting seat 13 and the first column 14, and gaps are formed between the two second enclosures 21 and the second connecting seat 22 and the second column 23, effectively forming a sand core mold. Fixing blocks 25 are set between adjacent positioning blocks 24 to form a staggered support layout for the second column 23. By adjusting the spacing or number of positioning blocks 24 and fixing blocks 25, different sizes or shapes of sand cores can be accommodated, improving the mold's versatility. This sand core mold achieves high-efficiency production and long service life through its modular disassembly structure and rigid support of double enclosures.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The embodiments described above are merely illustrative of the implementation of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A sand core mold, characterized in that: This includes an upper mold assembly and a lower mold assembly that are detachably connected to the base plate; The upper mold assembly includes an upper cover, two first enclosure members, a first connecting seat, and a plurality of first pillars. The top periphery of the first connecting seat is provided with a plurality of first pillars at intervals. The first connecting seat is detachably connected to the first pillars. The two first enclosure members are detachably connected. The first enclosure members are provided on the periphery of the first connecting seat and the first pillars, and a gap is formed between the two first enclosure members and the first connecting seat and the first pillars. The upper cover is provided on the first pillars, and the bottom periphery of the upper cover abuts against the two first enclosure members. The lower mold assembly includes two second enclosure members, a second connecting seat, a plurality of second pillars, a plurality of positioning blocks, and a plurality of fixing blocks. The second connecting seat has a plurality of second pillars spaced apart on its top periphery. The second connecting seat is detachably connected to the second pillars. The two second enclosure members are detachably connected. The two second enclosure members are located on the periphery of the second connecting seat and the second pillars, and a gap is formed between the two second enclosure members and the second connecting seat and the second pillars. The tops of the two second enclosure members are staggered with a plurality of positioning blocks and a plurality of fixing blocks that are detachably connected. The positioning blocks and the fixing blocks extend toward the second pillars, and the positioning blocks and the fixing blocks abut against the adjacent second pillars respectively.

2. The sand core mold according to claim 1, characterized in that: The outer walls of the first enclosure member are recessed at opposite ends to form a first positioning groove, which is adapted to the base plate. The opposite ends of the first enclosure member are provided with a first positioning hole.

3. The sand core mold according to claim 1, characterized in that: The bottom of the first connector is provided with a first reinforcing member, and the side of the first reinforcing member facing away from the first connector is provided with a second positioning hole, which is adapted to the base plate.

4. The sand core mold according to claim 1, characterized in that: The outer walls of the second enclosure are recessed at opposite ends to form a second positioning groove, which is adapted to the bottom plate. The opposite ends of the second enclosure are provided with a third positioning hole, and the top surface of the second enclosure is provided with a plurality of fourth positioning holes at intervals.

5. The sand core mold according to claim 4, characterized in that: The positioning block is provided with a first inclined part and a first arc-shaped part. Part of the first arc-shaped part abuts against the second column. The top surface of the positioning block is recessed to form a receiving groove. The bottom surface of the positioning block is provided with a fifth positioning hole. The fourth positioning hole and the fifth positioning hole are positioned corresponding to each other.

6. The sand core mold according to claim 5, characterized in that: The fixing block is provided with a second inclined surface and a second arc-shaped part. The first inclined surface is adapted to the second inclined surface, and the second arc-shaped part abuts against the second column. The bottom surface of the fixing block is provided with a sixth positioning hole, and the fourth positioning hole corresponds to the sixth positioning hole.

7. The sand core mold according to claim 1, characterized in that: The bottom of the second connector is provided with a second reinforcing member, and the side of the second reinforcing member facing away from the second connector is provided with a seventh positioning hole, which is adapted to the base plate.

8. The sand core mold according to claim 1, characterized in that: The first column and the second column are coaxially arranged.

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