An assembly structure of a precision casting model of a lost foam hollow shell
By using a combination of components such as support plates and limiting rods in the assembly structure of the lost foam hollow shell precision casting model, the precise alignment and clamping of the model's individual parts were achieved, solving the problem of insufficient assembly accuracy and improving the casting effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUANQU COUNTY JINFENG MASCH FOUNDRY CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-24
AI Technical Summary
The existing lost foam empty shell precision casting model is prone to alignment deviation during assembly, resulting in poor accuracy of the assembled model and affecting the subsequent casting effect.
It adopts an assembly structure including components such as base, mounting frame, support plate, limiting rod and pressure bar. By rotating the support plate and adjusting the height of the limiting rod, it can achieve precise positioning and clamping of the model parts. Combined with the sliding function of the mounting frame, it ensures docking accuracy.
It improves the precision of assembly of lost foam hollow shell precision casting models, avoids the instability of traditional manual alignment, and ensures the precision and quality of castings during the casting process.
Smart Images
Figure CN224543053U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lost foam casting technology, and in particular to an assembly structure for a lost foam hollow precision casting model. Background Technology
[0002] Lost foam casting (also known as solid casting) is a new type of casting method that involves bonding and assembling paraffin or foam models similar in size and shape to the casting into a model cluster, coating them with refractory paint and drying them, embedding them in dry quartz sand and vibrating them to create the model, then pouring the liquid metal under negative pressure to vaporize the model, allowing the liquid metal to occupy the model's position, and finally solidifying and cooling to form the casting.
[0003] The empty shell precision casting model of lost foam sometimes needs to be assembled and glued between the parts to form the model. However, the current assembly process simply involves manually aligning the parts and then gluing them together, which can easily lead to alignment deviations, resulting in poor accuracy of the assembled model and affecting the subsequent casting effect. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a lost foam hollow shell precision casting model assembly structure that can position and support the model parts to be assembled, thereby improving the accuracy of the assembled model.
[0005] The technical solution adopted by this utility model is as follows: a lost foam hollow precision casting model assembly structure is provided, including a base and mounting brackets disposed on the left and right sides of the upper end of the base; the mounting bracket on the left side is fixed to the base; the mounting bracket on the right side slides with the base in the left and right directions through a sliding member; the mounting bracket is vertically arranged; at least two rows of mounting holes are distributed on the mounting bracket from top to bottom; each mounting hole is provided with an adjustment limiting component; The adjustment limiting component includes a support plate rotatably fitted into a mounting hole; a handle fixed on the support plate; a connecting frame corresponding to the support plate fixed on the mounting bracket; a first set bolt for positioning the support plate threaded onto the connecting frame; a base connected to one end of each of the left and right support plates; the base is offset from the center of the support plate; and a limiting rod is fixed on the base along the left-right direction.
[0006] To further optimize this technical solution, a sliding component for a lost foam hollow precision casting model assembly structure includes a sliding groove opened on the base in the left-right direction; the bottom of the mounting bracket on the right side is slidably connected in the sliding groove; an expansion joint is provided at the upper end of the base in the left-right direction; one end of the expansion joint is fixed to the left side of the upper end of the base, and the other end is fixed to the mounting bracket on the right side.
[0007] Further optimizing this technical solution, a base and support plate are rotatably connected to a lost foam hollow precision casting model assembly structure; a second set bolt for positioning with the support plate is threaded on the base; a through groove is vertically opened at the end of the limiting rod away from the base; a sleeve is fixed on the limiting rod; the through groove and the sleeve are correspondingly connected; multiple pressure bars are inserted into the sleeve and arranged sequentially along the through groove; the pressure bars pass through the through groove; a clamping bolt for pressing and positioning the multiple pressure bars is threaded through the sleeve.
[0008] To further optimize this technical solution, a guide rod is fixed in the left-right direction inside the slide groove of a lost foam hollow precision casting model assembly structure; the mounting bracket on the right side is slidably sleeved on the guide rod.
[0009] To further optimize this technical solution, the guide rod of a lost foam hollow precision casting model assembly structure is coated with grease.
[0010] To further optimize this technical solution, the pressure bar of the lost foam hollow precision casting model assembly structure is made of a surface-coated material.
[0011] The beneficial effects of this utility model are as follows: Because the base is offset from the center of the support plate, the rotation of the support plate in the mounting hole can change the height position of the limiting rod. The first set bolt can position the support plate, which in turn positions the adjusted limiting rod. By adjusting the height of at least two rows of limiting rods, the combination of multiple limiting rods can clamp the corresponding parts of the hollow precision casting model.
[0012] By clamping the model's individual parts with limiting rods on both the left and right sides and fine-tuning the position of the limiting rods, precise alignment of the individual parts on both sides can be achieved. Combined with the sliding of the right mounting bracket on the base in the left and right directions, the model's individual parts can be connected, facilitating subsequent bonding and assembly. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram showing the distribution of the mounting holes; Figure 3 This is a schematic diagram of the structure at the pressure bar.
[0014] In the diagram, 1. Base; 2. Mounting bracket; 3. Mounting hole; 4. Support plate; 5. Handle; 6. Connecting bracket; 7. First set bolt; 8. Base; 9. Limiting rod; 10. Slide groove; 11. Expansion joint; 12. Second set bolt; 13. Through groove; 14. Insert sleeve; 15. Pressure bar; 16. Fastening bolt; 17. Guide rod. Detailed Implementation
[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0016] like Figure 1-2 As shown, a lost foam hollow precision casting model assembly structure includes a base 1 and mounting brackets 2 disposed on the left and right sides of the upper end of the base 1; the left mounting bracket 2 is fixed to the base 1; the right mounting bracket 2 slides with the base 1 in the left and right directions through a sliding member; the mounting bracket 2 is vertically arranged; at least two rows of mounting holes 3 are distributed on the mounting bracket 2 from top to bottom; each mounting hole 3 is provided with an adjustment limiting component; The adjustment limiting component includes a support plate 4 rotatably fitted into the mounting hole 3; a handle 5 is fixed on the support plate 4; a connecting frame 6 corresponding to the support plate 4 is fixed on the mounting bracket 2; a first set bolt 7 for positioning the support plate 4 is threaded onto the connecting frame 6; a base 8 is connected to one end of each of the left and right support plates 4 that is close to each other; the base 8 is offset from the center of the support plate 4; and a limiting rod 9 is fixed on the base 8 along the left and right direction.
[0017] Precise alignment of the individual components in a hollow precision-cast model is crucial for ensuring accuracy during subsequent bonding and assembly into a complete form. This prevents deviations in the final casting. Traditional methods of manually aligning these components are prone to instability, leading to insufficient alignment precision.
[0018] In this solution, the two separate parts are clamped and positioned by the adjustment and limiting components on the left and right mounting brackets 2 respectively. Then, the two separate parts are connected by sliding the right mounting bracket 2, which avoids the problem of instability in traditional hand-held assembly and effectively improves the accuracy of empty shell precision casting model assembly.
[0019] When clamping the separate parts of the model, since the base 8 is offset from the center of the support plate 4, the height position of the limiting rod 9 can be changed by rotating the support plate 4 in the mounting hole 3. Then, the support plate 4 is positioned using the first set bolt 7, thus achieving the positioning of the adjusted limiting rod 9. By adjusting the height of at least two rows of limiting rods 9, multiple limiting rods 9 can be combined to clamp the separate parts of the hollow precision-cast model accordingly. The adjustment limiting components are set at least two rows to ensure clamping on the upper and lower sides of the model. Of course, depending on the type of parts to be clamped, more adjustment limiting components can be set as needed, such as in cases where there is a need for further clamping of specific parts of the model in addition to overall clamping.
[0020] The above operation allows the height of the limiting rod 9 at different positions to be adjusted separately, which can more flexibly adapt to the different space height requirements of different parts of the split parts for clamping, ensure separate clamping of multiple parts of the split parts, improve clamping stability, adapt to more types of models, and by fine-tuning the height of the limiting rod 9, the position of the model split parts can be fine-tuned, thereby ensuring the accuracy when the split parts on both sides are connected.
[0021] Of course, in order to better adapt to the size, model and other structural parameters of the assembled empty shell precision casting model, the distribution distance and quantity of the limiting components can also be adjusted accordingly. This process can be set by those skilled in the art according to their needs, and this solution will not elaborate on it.
[0022] like Figure 1 As shown, the sliding component includes a sliding groove 10 opened on the base 1 in the left-right direction; the bottom of the mounting bracket 2 on the right side is slidably connected in the sliding groove 10; a telescopic device 11 is provided on the upper end of the base 1 in the left-right direction; one end of the telescopic device 11 is fixed to the left side of the upper end of the base 1, and the other end is fixed to the mounting bracket 2 on the right side. The telescopic device 11 can conveniently control the right mounting bracket 2 to move closer to or away from the left mounting bracket 2 by extending and retracting, thereby driving the corresponding split parts to move closer or further away, improving the ease of operation.
[0023] like Figure 1 , Figure 3 As shown, the base 8 is rotatably connected to the support plate 4; a second set bolt 12 for positioning with the support plate 4 is threaded onto the base 8; a through groove 13 is vertically opened at the end of the limiting rod 9 away from the base 8; a sleeve 14 is fixed on the limiting rod 9; the through groove 13 and the sleeve 14 are correspondingly connected; a plurality of pressure bars 15 are inserted into the sleeve 14 and arranged sequentially along the through groove 13; the pressure bars 15 pass through the through groove 13; a clamping bolt 16 for pressing and positioning the plurality of pressure bars 15 is threaded through the sleeve 14.
[0024] Some model components have uneven surfaces, making it difficult to accurately locate the clamping position when held only by the limiting rod 9. In such cases, adjusting multiple pressure bars 15 individually can achieve a better fit with the shape of the clamping position, further improving the clamping adaptability to the model. After the pressure bars 15 are adjusted to the correct position, tightening the clamping bolts 16 can clamp the pressure bars 15 together, thus achieving the positioning of the pressure bars 15.
[0025] The rotation of the base 8 and the support plate 4 can drive the pressure bar 15 on the limiting rod 9 to rotate, further improving the flexibility of the pressure bar 15 to adapt to the surface shape of the model parts.
[0026] like Figure 1As shown, a guide rod 17 is fixed in the left-right direction inside the slide groove 10; the mounting bracket 2 on the right side is slidably sleeved on the guide rod 17. The guide rod 17 enhances the stability guidance of the sliding of the mounting bracket 2, and even without the use of the telescopic device 11, the sliding of the mounting bracket 2 can be guaranteed to be stable by manually controlling it.
[0027] The guide rod 17 is coated with grease. The grease acts as a lubricant, making the sliding between the mounting bracket 2 and the guide rod 17 smoother and reducing frictional resistance.
[0028] Pressure bar 15 is made of rubber-coated material. When pressure bar 15 is clamped to the model parts, its rubber coating acts as a buffer to prevent damage to the model surface caused by rigid impacts.
[0029] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this utility model.
Claims
1. A lost foam hollow shell precision casting model assembly structure, characterized in that: It includes a base (1) and mounting brackets (2) located on the left and right sides of the upper end of the base (1); the mounting bracket (2) on the left side is fixed to the base (1); the mounting bracket (2) on the right side slides with the base (1) in the left and right directions through a sliding member; the mounting bracket (2) is vertically arranged; at least two rows of mounting holes (3) are distributed on the mounting bracket (2) from top to bottom; each mounting hole (3) is provided with an adjustment limiting component; The adjustment limiting component includes a support plate (4) that is rotatably fitted into the mounting hole (3); a handle (5) is fixed on the support plate (4); a connecting frame (6) corresponding to the support plate (4) is fixed on the mounting bracket (2); a first set bolt (7) for positioning the support plate (4) is threaded onto the connecting frame (6); a base (8) is connected to one end of each of the left and right support plates (4) that are close to each other; the base (8) is offset from the center of the support plate (4); a limiting rod (9) is fixed on the base (8) along the left and right direction.
2. The assembly structure of a lost foam hollow shell precision casting model according to claim 1, characterized in that: The sliding component includes a sliding groove (10) opened on the base (1) in the left-right direction; the bottom of the mounting bracket (2) on the right side is slidably connected in the sliding groove (10); the upper end of the base (1) is provided with a telescopic device (11) in the left-right direction; one end of the telescopic device (11) is fixed to the left side of the upper end of the base (1), and the other end is fixed to the mounting bracket (2) on the right side.
3. The assembly structure of a lost foam hollow shell precision casting model according to claim 1, characterized in that: The base (8) is rotatably connected to the support plate (4); a second set bolt (12) for positioning with the support plate (4) is threaded on the base (8); a through groove (13) is opened vertically at the end of the limiting rod (9) away from the base (8); a sleeve (14) is fixed on the limiting rod (9); the through groove (13) and the sleeve (14) are correspondingly connected; multiple pressure bars (15) are inserted into the sleeve (14) and arranged sequentially along the through groove (13); the pressure bars (15) pass through the through groove (13); a clamping bolt (16) for clamping and positioning the multiple pressure bars (15) is threaded through the sleeve (14).
4. The assembly structure for a lost foam hollow shell precision casting model according to claim 1, characterized in that: A guide rod (17) is fixed in the lateral direction inside the slide (10); the mounting bracket (2) on the right side is slidably sleeved on the guide rod (17).
5. The assembly structure for a lost foam hollow shell precision casting model according to claim 4, characterized in that: The guide rod (17) is coated with grease.
6. The assembly structure for a lost foam hollow shell precision casting model according to claim 3, characterized in that: The pressure strip (15) is made of a surface-coated material.