Precise investment casting device

Abstract

The utility model relates to the field of investment casting equipment, and discloses a precise investment casting device, which comprises an upper template and a lower template, the upper surface of the upper template is detachably connected with a mounting plate, the left side and the right side of the mounting plate are provided with a plurality of groups of uniformly distributed mold ejecting assemblies, each mold ejecting assembly comprises a mold ejecting box, and the mold ejecting box is provided with a plurality of mold ejecting holes. A hollow column is fixedly connected to the upper surface of the top mold box, two sets of sliding grooves are formed in the left surface and the right surface of the inner wall of the top mold box correspondingly, and sliding plates are slidably connected into grooves of the sliding grooves. According to the utility model, through the mutual matching of the parts in the mold ejection assembly, the separation effect of the upper mold plate and the lower mold plate is realized, and the situations of sudden collision of the mold plates and excessive mold ejection in the mold ejection process are avoided, so that the stress on the surface of the mold is more uniform after the upper mold plate and the lower mold plate are separated; and the flatness of the molded surface of the product is improved, and the casting effect of equipment on the product in the mold is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of investment casting equipment, and in particular to a precision investment casting device. Background Technology

[0002] Investment casting is an ancient precision casting technique. It involves creating a model using a fusible material, then covering the model with a refractory material to form a shell. After the refractory material hardens, the fusible material is melted and poured out, leaving a cavity with the same shape as the original model. Molten metal is then poured into the cavity, cooled, and solidified. The refractory shell is then broken down to obtain the desired metal casting.

[0003] A search revealed Chinese Patent Publication No. CN221362573U, which discloses a precision investment casting device. The top of a pull rope is fixed to a take-up shaft, and the bottom of the pull rope is equipped with a detachable gripping tube. A guide tube is fixedly installed at the top of the gripping tube, and a positioning seat is fixedly installed at the bottom of the gripping tube. The wax model body is located at the lower end of the positioning seat. The guide tube, gripping tube, and positioning seat are connected. A connecting plate is fixedly installed at the lower end of the pull rope and the upper end of the gripping tube. Rotating the take-up shaft causes it to wind up the pull rope, allowing the wax model body to rise. Then, an air pump is activated, creating positive pressure inside the gripping tube, at which point the wax model body can detach from the gripping tube. This makes disassembly of the wax model body very convenient, thereby improving the casting efficiency of parts. Furthermore, when the pull rope or gripping tube is damaged, the disassembly process is relatively convenient, making the structure easy to maintain.

[0004] The above-mentioned device has the following defects: after the molten liquid in the mold solidifies, a huge demolding force needs to be applied during the demolding process due to the solidification of the molten liquid. When the demolding force on the product is uneven, it will cause damage to the mold and the product during the separation process, reducing the demolding stability of the device. Furthermore, when the molten liquid cools unevenly in the mold, it will cause the surface smoothness of the molded product to decrease, reducing the casting effect of the molded product. Therefore, a precision investment casting device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a precision investment casting device, which aims to improve the problem of uneven mold demolding force after the molten liquid solidifies in the mold in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a precision investment casting device, comprising an upper mold and a lower mold, wherein an mounting plate is detachably connected to the upper surface of the upper mold, and multiple sets of evenly distributed top mold assemblies are arranged on the left and right sides of the mounting plate, each top mold assembly comprising a top mold box, wherein a hollow column is fixedly connected to the upper surface of the top mold box, and two sets of sliding grooves are provided on the left and right surfaces of the inner wall of the top mold box, wherein a sliding plate is slidably connected in the groove of the sliding groove, and a through column is fixedly connected to the lower surface of the sliding plate, wherein a fixing plate is fixedly connected to the lower side of the left end of the inner wall of the top mold box near the lower side of the sliding groove, and a spring is sleeved on the outer wall of the through column, and a cooling assembly is provided at the bottom of the lower mold.

[0007] As a further description of the above technical solution: the cooling assembly includes a cooling seat, which is detachably connected to the lower surface of the lower template. A refrigeration box is fixedly connected to the front surface of the cooling seat. A refrigeration pipe is connected to the output end of the refrigeration box. Multiple sets of refrigeration columns are fixedly connected to the bottom of the inner wall of the cooling seat through the refrigeration pipe.

[0008] As a further description of the above technical solution: the outer wall of the top mold box is fixedly connected to the grooves on the left and right sides of the upper surface of the mounting plate.

[0009] As a further description of the above technical solution: multiple sets of transmission nodes are fixedly connected to the front surface of the cooling base near the upper side of the refrigeration box, and multiple sets of heat dissipation holes are opened on both the left and right surfaces of the cooling base.

[0010] As a further description of the above technical solution: two sets of auxiliary plates are fixedly connected to the left and right surfaces of the cooling base, four sets of motors are fixedly connected to the left surface of the auxiliary plates, and a fan is fixedly connected to the output shaft of the motor.

[0011] As a further description of the above technical solution: the top of the spring is fixedly connected to the lower surface of the slide plate, and the bottom of the spring is fixedly connected to the upper surface of the fixing plate.

[0012] As a further description of the above technical solution: the lower surface of the through column is connected to the axis of the upper surface of the fixed plate.

[0013] As a further description of the above technical solution: a top mold column is fixedly connected to the bottom of the through column.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, by utilizing the interconnections between components such as the top mold box, top mold column, and slide plate in the top mold assembly, the top mold column acts on the upper surface of the auxiliary plate, achieving the separation of the upper and lower mold plates. This avoids sudden collisions between the mold plates and excessive top molding during the top molding process, resulting in more uniform stress on the mold surface after the separation of the upper and lower mold plates. This improves the flatness of the product molding surface and enhances the casting effect of the equipment on the product in the mold.

[0016] 2. In this utility model, by utilizing the mutual cooperation between the cooling seat, cooling column, cooling pipe and other components in the cooling assembly, the bottom surface of the lower template is cooled, which improves the shaping speed of the product in the casting equipment. In addition, the cooling seat dissipates heat on the left and right sides, which accelerates the heat exchange effect of the cooling seat on the mold and enhances the cooling and shaping effect of the equipment on the product in the casting equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main body of a precision investment casting device proposed in this utility model.

[0018] Figure 2 This is a side view of the main body of a precision investment casting device proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the internal cross-sectional area of ​​the top mold box of a precision investment casting device proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the internal area of ​​the cooling seat of a precision investment casting device proposed in this utility model.

[0021] Legend:

[0022] 1. Upper template; 2. Lower template; 3. Cooling assembly; 31. Cooling base; 32. Refrigeration box; 33. Refrigeration column; 34. Transmission node; 35. Heat dissipation hole; 36. Refrigeration pipe; 4. Auxiliary plate; 41. Motor; 42. Fan; 5. Mounting plate; 6. Top mold assembly; 61. Top mold box; 62. Hollow column; 63. Slide plate; 64. Slide groove; 65. Through column; 66. Spring; 67. Fixing plate; 68. Top mold column. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1 - Figure 2 The present invention provides an embodiment of a precision investment casting device, comprising an upper mold 1 and a lower mold 2. The upper mold 1 and the lower mold 2 support the device and work together to shape the product. An installation plate 5 is detachably connected to the upper surface of the upper mold 1, which enables the assembly and disassembly of the device. Multiple sets of evenly distributed top mold components 6 are provided on the left and right sides of the installation plate 5, and a cooling component 3 is provided at the bottom of the lower mold 2.

[0025] Reference Figure 1 - Figure 3 When demolding of the upper template 1 and lower template 2 is required, the top mold assembly 6 is activated. The top mold assembly 6 includes a top mold box 61. The outer wall of the top mold box 61 is fixedly connected to the grooves on the left and right sides of the upper surface of the mounting plate 5. The extrusion column in the peripheral equipment is inserted into the top mold box 61 through the hollow column 62. The hollow column 62 is fixedly connected to the upper surface of the top mold box 61. Two sets of sliding grooves 64 are opened on the left and right surfaces of the inner wall of the top mold box 61. The sliding plate 63 is slidably connected in the groove of the sliding groove 64. The extrusion column exerts a downward extrusion force on the sliding plate 63, causing the sliding plate 63 to move downward. The lower surface of the sliding plate 63 is fixedly connected to the through column 65. The lower surface of the through column 65 is connected to the axis of the upper surface of the fixed plate 67. The downward movement of the sliding plate 63 causes the through column 65 to move downward. The lower side of the left end of the inner wall of the top mold box 61, near the lower side of the sliding groove 64, is fixedly connected to the fixed plate 67. A spring 66 is fitted onto the outer wall of the mold, causing the spring 66 to extend and retract, thus completely ejecting the top mold column 68 from the top mold box 61. The bottom of the through column 65 is fixedly connected to the top mold column 68, which acts on the upper surface of the auxiliary plate 4, driving the mounting plate 5 and the upper template 1 to move upward, achieving the separation of the upper template 1 and the lower template 2. The top of the spring 66 is fixedly connected to the lower surface of the slide plate 63, and the bottom of the spring 66 is fixedly connected to the upper surface of the fixing plate 67. During the process of extruding the top mold column, the spring 66 plays an elastic damping role, avoiding sudden collisions of the mold plates and excessive ejection during the ejection process. It also protects against the separation of the upper template 1 and the lower template 2, making the force on the mold surface more uniform after the separation of the upper template 1 and the lower template 2, improving the flatness of the product forming surface, and enhancing the casting effect of the equipment on the product in the mold.

[0026] Reference Figure 2 - Figure 4 During the shaping process of the molten liquid in the upper mold 1 and lower mold 2, the cooling assembly 3 is activated. The cooling assembly 3 includes a cooling seat 31, which is detachably connected to the lower surface of the lower mold 2. A refrigeration box 32 is fixedly connected to the front surface of the cooling seat 31. The refrigeration box 32 is activated, and the refrigerant in the refrigeration box 32 circulates through the refrigeration pipe 36. The output pipe of the refrigeration box 32 is connected to the refrigeration pipe 36. Multiple sets of refrigeration columns 33 are fixedly connected to the bottom of the inner wall of the cooling seat 31 through the refrigeration pipe 36. The refrigeration columns 33 are cooled through the transmission node 34, and the bottom surface of the lower mold 2 is cooled by the refrigeration columns 33. The front surface of the cooling seat 31 is close to the refrigeration box 32. Multiple sets of transmission nodes 34 are fixedly connected to the upper side of the cooling seat 31, which allows the molten liquid in the mold to be gradually cooled from bottom to top, thereby improving the shaping speed of the product in the casting equipment. Multiple sets of heat dissipation holes 35 are opened on the left and right surfaces of the cooling seat 31, through which hot air is discharged to the outside of the cooling seat 31. Two sets of auxiliary plates 4 are fixedly connected to the left and right surfaces of the cooling seat 31. Four sets of motors 41 are fixedly connected to the left surface of the auxiliary plate 4. By starting the motors 41, the fans 42 are rotated. The output shaft of the motors 41 is fixedly connected to the fans 42, which dissipate heat on the left and right sides of the cooling seat 31, thereby accelerating the heat exchange effect of the cooling seat 31 on the mold and enhancing the cooling and shaping effect of the equipment on the product in the casting equipment.

[0027] Working Principle: When demolding of the upper mold plate 1 and lower mold plate 2 is required, the top mold assembly 6 is activated. The extrusion column in the peripheral equipment is inserted into the top mold box 61 through the hollow column 62. The extrusion column exerts downward pressure on the sliding plate 63, causing the sliding plate 63 to move downward. The downward movement of the sliding plate 63 causes the through column 65 to move downward, causing the spring 66 to extend and retract, allowing the top mold column 68 to be completely ejected from the top mold box 61. This then acts on the upper surface of the auxiliary plate 4, causing the mounting plate 5 and the upper mold plate 1 to move upward, achieving the separation of the upper mold plate 1 and the lower mold plate 2. During the extrusion column's ejection process, the spring 66 acts as an elastic damper, preventing sudden collisions between the mold plates and excessive ejection during the ejection process. It protects the mold surface after the separation of the upper mold plate 1 and the lower mold plate 2. The force is more evenly distributed, improving the flatness of the product's forming surface and enhancing the casting effect of the equipment on the product in the mold. During the shaping process of the molten liquid in the upper mold plate 1 and lower mold plate 2, the cooling component 3 is activated, and the refrigeration box 32 is started. The refrigerant in the refrigeration box 32 circulates through the refrigeration pipe 36 and cools the refrigeration column 33 through the transmission node 34. The refrigeration column 33 completes the cooling effect on the bottom surface of the lower mold plate 2, so that the molten liquid in the mold is gradually cooled from bottom to top, which improves the shaping speed of the product in the casting equipment. The hot air is led out to the outside of the cooling seat 31 through the heat dissipation hole 35. By starting the motor 41, the fan 42 rotates to dissipate heat on the left and right sides of the cooling seat 31, accelerating the heat exchange effect of the cooling seat 31 on the mold and enhancing the cooling and shaping effect of the equipment on the product in the casting equipment.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 precision investment casting apparatus, comprising an upper mold (1) and a lower mold (2), characterized in that: The upper surface of the upper template (1) is detachably connected to an installation plate (5). Multiple sets of evenly distributed top mold components (6) are provided on the left and right sides of the installation plate (5). The top mold component (6) includes a top mold box (61). A hollow column (62) is fixedly connected to the upper surface of the top mold box (61). Two sets of sliding grooves (64) are opened on the left and right surfaces of the inner wall of the top mold box (61). A sliding plate (63) is slidably connected in the groove of the sliding groove (64). A through column (65) is fixedly connected to the lower surface of the sliding plate (63). A fixing plate (67) is fixedly connected to the lower side of the left end of the inner wall of the top mold box (61) near the sliding groove (64). A spring (66) is sleeved on the outer wall of the through column (65). A cooling component (3) is provided at the bottom of the lower template (2).

2. The precision investment casting apparatus according to claim 1, characterized in that: The cooling assembly (3) includes a cooling seat (31), which is detachably connected to the lower surface of the lower template (2). A refrigeration box (32) is fixedly connected to the front surface of the cooling seat (31). A refrigeration pipe (36) is connected to the output end of the refrigeration box (32). Multiple sets of refrigeration columns (33) are fixedly connected to the bottom of the inner wall of the cooling seat (31) through the refrigeration pipe (36).

3. The precision investment casting apparatus according to claim 1, characterized in that: The outer wall of the top mold box (61) is fixedly connected to the grooves on the left and right sides of the upper surface of the mounting plate (5).

4. The precision investment casting apparatus according to claim 2, characterized in that: Multiple sets of transmission nodes (34) are fixedly connected to the front surface of the cooling base (31) near the upper side of the refrigeration box (32), and multiple sets of heat dissipation holes (35) are opened on the left and right surfaces of the cooling base (31).

5. A precision investment casting apparatus according to claim 2, characterized in that: Two sets of auxiliary plates (4) are fixedly connected to the left and right surfaces of the cooling base (31). Four sets of motors (41) are fixedly connected to the left surface of the auxiliary plate (4). A fan (42) is fixedly connected to the output shaft of the motor (41).

6. The precision investment casting apparatus according to claim 1, characterized in that: The top of the spring (66) is fixedly connected to the lower surface of the slide plate (63), and the bottom of the spring (66) is fixedly connected to the upper surface of the fixing plate (67).

7. The precision investment casting apparatus according to claim 1, characterized in that: The lower surface of the through post (65) is connected to the axis of the upper surface of the fixing plate (67).

8. The precision investment casting apparatus according to claim 1, characterized in that: The bottom of the through column (65) is fixedly connected to the top mold column (68).

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