A sand mold reinforcement structure for low-pressure casting

Abstract

This utility model relates to the field of low-pressure casting technology, and more particularly to a sand mold reinforcement structure for low-pressure casting. The structure includes a box body placed on top of a casting base plate and fitted over the sand mold. The box body includes baffles on the front and rear sides of the sand mold, and hanging plates and pull rods on the left and right sides of the sand mold. Multiple first through holes are spaced along the left and right sides of the baffles for the pull rods to pass through. The hanging plates are attached to the side of the pull rods closest to the sand mold, and the cavity formed by the hanging plates, baffles, and sand mold is filled with self-hardening sand. The box body and the self-hardening sand work together to reinforce the outer perimeter of the sand mold, effectively preventing aluminum molten metal splashing due to insufficient sand mold strength and improving casting safety. The box body structure is adjustable, allowing for adjustment of the self-hardening sand filling thickness according to the casting pressure, further ensuring the stability and controllability of the casting process. This structure solves the problem of splashing accidents that easily occur during low-pressure casting using traditional sand molds.

Description

Technical Field

[0001] This utility model relates to the field of low-pressure casting technology, and in particular to a sand mold reinforcement structure for low-pressure casting. Background Technology

[0002] In the low-pressure casting process of aluminum alloys, sand molds are a key piece of equipment for casting, and their strength and stability directly affect the safety of the pouring process and the quality of the castings. For example... Figure 3 As shown, before casting, the assembled sand mold needs to be placed on the casting base plate (there is a gating hole in the middle of the casting base plate). Then, the assembled sand mold together with the casting base plate is placed on the melting furnace, and the gating hole is aligned with the liquid riser pipe of the melting furnace.

[0003] Traditional sand molds, due to their complex structure and gaps between the assembled sand blocks, are prone to local deformation or even cracking under the pressure of molten aluminum during low-pressure casting, which can lead to molten aluminum splashing accidents, causing equipment damage and personal injury in severe cases. Utility Model Content

[0004] In view of this, this utility model proposes a sand mold reinforcement structure for low-pressure casting. This structure reinforces the outer perimeter of the sand mold through the cooperation of a box body and self-hardening sand, effectively preventing aluminum molten metal splashing due to insufficient mold strength and improving casting safety. Simultaneously, the box body structure is adjustable, facilitating the adjustment of the self-hardening sand filling thickness according to the casting pressure, further ensuring the stability and controllability of the casting process. This structure solves the problem of splashing accidents that easily occur during low-pressure casting using traditional sand molds.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides a sand mold reinforcement structure for low-pressure casting, including a box body, which is placed on top of the casting base plate and fitted over the outside of the sand mold;

[0007] The housing includes baffles on the front and rear sides of the sand mold, and hanging plates and pull rods on the left and right sides of the sand mold.

[0008] The side of the baffle is provided with a plurality of first through holes spaced apart in the left-right direction for the pull rod to pass through in the front and back.

[0009] After the pull rod passes through the first through hole, it is fixed to the baffle by a through pin.

[0010] The hanging plate is attached to the side of the pull rod near the sand mold, and the cavity formed by the hanging plate, the baffle and the sand mold is filled with self-hardening sand.

[0011] Based on the above technical solution, preferably, the pull rod side is provided with a plurality of first pin holes spaced apart along the axial direction, wherein,

[0012] After the pull rod passes through the first through hole, a through pin is inserted into the first pin hole on the front and rear sides of the baffle, respectively.

[0013] Based on the above technical solutions, preferably, the two ends of the pull rod are tapered.

[0014] Based on the above technical solutions, preferably, the perforated pin is inserted vertically into the first pin hole.

[0015] Based on the above technical solutions, preferably, the upper side of the perforated pin is provided with anti-slip texture.

[0016] Based on the above technical solutions, preferably, the pull rod is magnetically fixed to the through pin.

[0017] Based on the above technical solutions, preferably, both the pull rod and the perforated pin are rod-shaped structures made of ferromagnetic material, wherein...

[0018] A permanent magnet is embedded in at least one end of the perforated pin.

[0019] Based on the above technical solutions, preferably, the hanging plate is provided with a hook portion on the side near the pull rod, wherein,

[0020] The hook is attached to the pull rod from top to bottom.

[0021] Based on the above technical solutions, preferably, the top of the baffle is provided with a second pin hole through vertically for inserting a double-headed pin.

[0022] Based on the above technical solutions, preferably, the side of the baffle is provided with an avoidance groove, wherein...

[0023] The second pin hole is connected to the clearance groove.

[0024] The sand mold reinforcement structure for low-pressure casting of this utility model has the following advantages over the prior art:

[0025] (1) By setting up a box that can be fitted outside the sand mold and filling the space between the box and the sand mold with self-hardening sand, the outer perimeter of the sand mold is effectively supported and strengthened, thereby solving the problem of aluminum liquid splashing caused by insufficient sand mold strength during low-pressure pouring, and significantly improving the safety and stability of the casting process.

[0026] (2) By setting multiple first through holes at intervals along the left and right directions on the side of the baffle, the position of the pull rod can be flexibly adjusted in the left and right directions, thereby realizing the adjustment of the box width and giving the box structure an adjustable size function. This structure can not only adapt to sand molds of various specifications, significantly improving the versatility and applicability of the box structure, but also flexibly adjust the transverse filling thickness of the self-hardening sand according to the actual casting pressure, further enhancing the compressive strength of the sand mold, effectively preventing aluminum liquid leakage or splashing, and improving the safety and process reliability of the casting process.

[0027] (3) By setting multiple first pin holes at axial intervals on the side of the tie rod, a multi-position adjustable connection structure is formed between the tie rod and the baffle. During operation, the width of the box in the front-to-back direction can be flexibly adjusted by inserting the perforated pin into the first pin holes at different positions, thereby adapting to sand molds of different sizes. This structure not only improves the compatibility of the box structure with various specifications of sand molds, but also allows for adaptive adjustment according to the actual casting pressure, further enhancing the applicability and stability of the device under different process conditions.

[0028] (4) By setting a second pin hole through the top of the baffle in the vertical direction and inserting a double-headed pin, the baffle can be stacked in the vertical direction. This structure realizes flexible adjustment of the box height, which is convenient to adapt to sand molds of different heights and further expands the application range of the box structure. At the same time, it makes the box structure more adaptable to the casting pressure.

[0029] (5) By setting a hook on the side of the hanging plate near the pull rod, the hanging plate can be quickly attached to the pull rod, which not only improves the stability of the connection, but also greatly improves the assembly efficiency of the overall structure, reduces the labor intensity of the operators, and enhances the ease of operation when installing the box.

[0030] (6) By setting the pull rod and the perforated pin to be fixed by magnetic force, the connection stability of the perforated pin after installation is improved, and the perforated pin is prevented from falling off due to vibration or other reasons during handling or use, thereby improving the safety and reliability of the box. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a perspective view of a sand mold reinforcement structure for low-pressure casting according to the present invention;

[0033] Figure 2 for Figure 1 Enlarged view of point A;

[0034] Figure 3 This is a partial exploded view of a sand mold reinforcement structure for low-pressure casting according to this utility model;

[0035] Figure 4 This is a partial perspective view of a sand mold reinforcement structure for low-pressure casting according to the present invention;

[0036] In the diagram: 1. Box body; 2. Cast base plate; 3. Sand mold; 11. Baffle; 12. Hanging plate; 13. Tie rod; 14. Through pin; 15. Double-headed pin; 1101. First through hole; 1102. Second pin hole; 1103. Clearance groove; 1201. Hook part; 1301. First pin hole. Detailed Implementation

[0037] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] like Figure 1-4 As shown, the present invention provides a sand mold reinforcement structure for low-pressure casting, including a box body 1. The box body 1 is placed on top of the casting base plate 2 and fitted over the outside of the sand mold 3 for external support and reinforcement of the sand mold 3.

[0039] The housing 1 includes baffles 11 on the front and rear sides of the sand mold 3, and hanging plates 12 and pull rods 13 on the left and right sides of the sand mold 3. The baffles 11 have multiple first through holes 1101 spaced apart along the left-right direction on their sides for the pull rods 13 to pass through. After passing through the first through holes 1101, the pull rods 13 are pinned to the baffles 11 by through pins 14. The hanging plates 12 are attached to the side of the pull rods 13 closest to the sand mold 3, and together with the baffles 11 and the sand mold 3, they form a closed cavity filled with self-hardening sand to enhance the overall strength of the sand mold 3.

[0040] In practical applications, the combination of box 1 and self-hardening sand structure reinforces the outer perimeter of sand mold 3, preventing aluminum liquid from splashing during casting and improving the safety of the casting process.

[0041] Furthermore, because the baffle 11 has multiple first through holes 1101 spaced apart in the left-right direction, the position of the pull rod 13 can be flexibly adjusted according to the actual width of the sand mold 3, thereby realizing the adjustment of the overall width of the box 1 and giving the box 1 an adjustable size function. This structure can not only adapt to various specifications of sand molds 3, significantly improving the versatility and applicability of the box 1, but also flexibly adjust the lateral filling thickness of the self-hardening sand according to the actual casting pressure, further enhancing the compressive strength of the sand mold 3, effectively preventing aluminum liquid leakage or splashing, and improving the safety and reliability of the casting process.

[0042] Furthermore, the pull rod 13 has multiple first pin holes 1301 spaced axially along its side. After the pull rod 13 passes through the first through hole 1101, a through pin 14 is inserted into the first pin holes 1301 on both the front and rear sides of the baffle 11. These two through pins 14 abut against the front and rear sides of the baffle 11 respectively, forming a front-rear limiting structure. This structure fixes the relative position of the pull rod 13 and the baffle 11, thereby making the box 1 without the hanging plate 12 have a frame-like structure. This allows the baffle 11 to be stably positioned on both the front and rear sides of the sand mold 3, facilitating the subsequent installation of the hanging plate 12.

[0043] These first pin holes 1301 enable multi-position adjustment of the connection between the pull rod 13 and the baffle 11. During operation, the width of the housing 1 in the front-to-back direction can be flexibly adjusted by inserting the perforated pin 14 into the first pin holes 1301 at different positions, thereby adapting to sand molds 3 of different sizes. This structure not only improves the compatibility of the housing 1 with various specifications of sand molds 3, but also allows for adaptive adjustment according to the actual casting pressure, further enhancing the applicability and stability of the device under different process conditions.

[0044] In addition, a second pin hole 1102 is vertically provided at the top of the baffle 11 for inserting a double-headed pin 15. The double-headed pin 15 is a columnar structure with a columnar protrusion in the middle part, forming a unique pin structure that is "thin at both ends and thick in the middle".

[0045] In actual operation, by inserting the double-headed pin 15 into the second pin hole 1102, the baffle 11 can be stacked in the vertical direction, thereby making the height of the box 1 adjustable and easy to adapt to sand molds 3 of different heights. This structure further expands the applicability of the box 1 and makes the box 1 more adaptable to the casting pressure.

[0046] In the above-mentioned reinforcement structure, the two ends of the tie rod 13 are tapered, which helps the tie rod 13 to smoothly pass through the first through hole 1101 on the baffle 11, reducing assembly difficulty and improving installation efficiency. It is especially suitable for flexible production lines that require frequent replacement of sand mold 3, and has good process adaptability and ease of operation.

[0047] In addition, the perforated pin 14 is inserted vertically into the first pin hole 1301, which makes the perforated pin 14 less likely to fall off, improves assembly stability, and prevents the perforated pin 14 from falling off due to vibration or other reasons during handling or use, thereby improving the safety and reliability of the housing 1 during use.

[0048] Furthermore, the pull rod 13 and the perforated pin 14 are fixed by magnetic force, thereby enhancing the connection stability of the perforated pin 14 after installation and preventing it from loosening or falling off due to external vibration during transportation or use, thus further improving the safety and reliability of the box 1 structure.

[0049] Specifically, both the pull rod 13 and the perforated pin 14 are rod-shaped structures made of ferromagnetic material. At least one end of the perforated pin 14 is embedded with a permanent magnet to form a stable magnetic connection with the pull rod 13, thereby achieving a fast and reliable fixing function.

[0050] In addition, anti-slip textures are provided on the side of the upper end of the perforated pin 14 to enhance the friction between the perforated pin 14 and the operating tool or the operator's hand, making it easier to insert and remove the pin, avoiding slippage during operation, and thus improving the safety and stability of the operation.

[0051] In the aforementioned reinforcement structure, the hanging plate 12 has a hook portion 1201 on the side near the tie rod 13. This hook portion 1201 has an inverted "J" shape and is hooked onto the tie rod 13 from top to bottom, enabling a detachable connection between the hanging plate 12 and the tie rod 13. Multiple hook portions 1201 are arranged in a matrix on the side of the hanging plate 12, effectively improving the stability and load-bearing capacity of the connection and ensuring that the hanging plate 12 is not prone to shifting or falling off during use.

[0052] In addition, in practical applications, multiple mounting plates 12 are prefabricated, and the horizontal widths of the multiple mounting plates 12 are different, which makes it easier to match the installation requirements of the box 1 under different width adjustment states and improves the versatility of the device.

[0053] In the above-mentioned reinforcement structure, the side of the baffle 11 is provided with a relief groove 1103, and the relief groove 1103 is connected to the second pin hole 1102.

[0054] In practical applications, the clearance groove 1103 facilitates the smooth insertion or removal of the double-headed pin 15 into or out of the second pin hole 1102 by the operator, which significantly improves assembly efficiency and ease of operation, and is especially suitable for production scenarios that require frequent adjustment of the height of the box 1.

[0055] The method of using a sand mold reinforcement structure for low-pressure casting according to this utility model is as follows:

[0056] After placing the sand mold 3 on the casting base plate 2, two baffles 11 are respectively installed on the front and rear sides of the sand mold 3. Then, the two baffles 11 are connected and fixed using tie rods 13, ensuring the baffles 11 are stably erected on the front and rear sides of the sand mold 3. Next, a hanging plate 12 of appropriate width is attached to the end of the tie rod 13 closest to the sand mold 3. After attachment, the front and rear ends of the hanging plate 12 are tightly fitted to the corresponding sides of the baffles 11, forming a closed enclosure structure. Finally, self-hardening sand is filled into the cavity formed by the sand mold 3, baffles 11, and hanging plate 12, providing external support and reinforcement to the sand mold 3, thereby improving its overall strength.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sand mold reinforcement structure for low-pressure casting, comprising a box body (1), characterized in that: The box (1) is placed on top of the casting base plate (2) and fitted onto the outside of the sand mold (3); The housing (1) includes baffles (11) on the front and rear sides of the sand mold (3), and hanging plates (12) and pull rods (13) on the left and right sides of the sand mold (3), wherein, The baffle (11) has a plurality of first through holes (1101) spaced apart along the left and right direction on its side for the pull rod (13) to pass through from front to back; After the pull rod (13) passes through the first through hole (1101), it is pinned to the baffle (11) by a through pin (14); The hanging plate (12) is attached to the side of the pull rod (13) near the sand mold (3), and the cavity formed by the hanging plate (12), the baffle (11) and the sand mold (3) is filled with self-hardening sand.

2. The sand mold reinforcement structure for low-pressure casting as described in claim 1, characterized in that: The pull rod (13) has a plurality of first pin holes (1301) spaced axially on its side, wherein, After the pull rod (13) passes through the first through hole (1101), a through pin (14) is inserted into the first pin hole (1301) on the front and rear sides of the baffle (11).

3. The sand mold reinforcement structure for low-pressure casting as described in claim 2, characterized in that: The two ends of the pull rod (13) are tapered.

4. A sand mold reinforcement structure for low-pressure casting as described in claim 2, characterized in that: The perforated pin (14) is inserted vertically into the first pin hole (1301).

5. A sand mold reinforcement structure for low-pressure casting as described in claim 4, characterized in that: The upper side of the perforated pin (14) is provided with anti-slip texture.

6. A sand mold reinforcement structure for low-pressure casting as described in claim 2, characterized in that: The pull rod (13) is magnetically fixed to the perforated pin (14).

7. A sand mold reinforcement structure for low-pressure casting as described in claim 6, characterized in that: Both the pull rod (13) and the perforated pin (14) are rod-shaped structures made of ferromagnetic material. At least one end of the perforated pin (14) is inlaid with a permanent magnet.

8. A sand mold reinforcement structure for low-pressure casting as described in claim 1, characterized in that: The hanging plate (12) is provided with a hook (1201) on the side near the pull rod (13), wherein, The hook (1201) is attached to the pull rod (13) from top to bottom.

9. A sand mold reinforcement structure for low-pressure casting as described in claim 1, characterized in that: The top of the baffle (11) is provided with a second pin hole (1102) that runs vertically through it, for inserting a double-headed pin (15).

10. A sand mold reinforcement structure for low-pressure casting as described in claim 9, characterized in that: The baffle (11) is provided with a clearance groove (1103) on its side, wherein, The second pin hole (1102) is connected to the clearance groove (1103).

Images