An improved shell core box for use on a shell core machine

Abstract

The utility model belongs to shell core machine manufacturing technical field especially, it is related to an improved shell core box for shell core machine, including improved shell core box, the improved shell core box includes the fixed mould and movable mould of mirror image setting up, the fixed mould sets up in the upper portion of movable mould, the fixed mould and movable mould all are provided with the concave part of mirror image setting up, the plane four corners of fixed mould's concave part is provided with perpendicular to the limiting pin of plane, and the fixed mould top core plate of parallel to its plane is provided with the limiting pin place, the both sides of concave part are provided with the L type die foot of symmetrical arrangement, the plane four corners of movable mould's concave part is provided with perpendicular to the limiting pin of plane, the utility model discloses through setting up the improved fracture groove at the intersection of riser and brake caliper casting cavity, can effectively reduce brake caliper gate material problem, makes the residual of pouring riser place not to polish, can reach the acceptance requirement, can effectively improve the process yield and production efficiency, reduce the risk of shrinkage defect.

Description

Technical Field

[0001] This utility model belongs to the field of shell core machine manufacturing technology, and in particular relates to an improved shell core box used on a shell core machine. Background Technology

[0002] A core-making machine is a molding device in foundry machinery that uses a hot core box process to produce coated sand cores. It is mainly used in the foundry industry to produce complex sand cores. Core-making machines can meet the production needs of various core sands and feature adjustable process parameters and automatic mold temperature control. Our company owns several 957 core-making machines, which are supporting equipment for producing iron cylinder block sand cores. Because the iron cylinder block production line was dismantled in recent years, most of the 957 core-making machines have been idle for a long time. The sand cores required for our end cap products are mostly from existing 955 core-making boxes. Figure 4 The shell core box, produced by [Company Name], is an accessory to the 955 shell core machine. Due to the relocation of the company's casting production line, the 955 shell core machine was also moved, but the 955 shell core box could not be installed in time. This resulted in the inability to produce sand cores for most end cap products, and the end cap products faced the risk of supply disruption. To ensure the normal production and supply of end cap products, it was decided to transfer the 955 shell core box to the 957 shell core machine, which was not relocated. However, the existing 955 shell core box is smaller than the 957 shell core machine and cannot be fully installed on it. An improved shell core box for use on the shell core machine needs to be designed to improve the equipment. This would solve the problem of the 955 shell core box being unable to be put into production due to relocation and also improve the utilization rate of the idle 957 shell core machine. Utility Model Content

[0003] The purpose of this invention is to propose an improved shell core box for use on a shell core machine, which can effectively solve the problem of existing shell core boxes being unable to be matched and installed, thereby not only improving the utilization rate of existing shell core machines but also increasing production efficiency and reducing production costs.

[0004] The present invention adopts the following technical solution: An improved shell core box for use on a shell core machine includes an improved shell core box; the improved shell core box includes a fixed mold and a moving mold arranged in a mirror image, with the fixed mold disposed on the upper part of the moving mold; both the fixed mold and the moving mold are provided with concave portions arranged in a mirror image; the four corners of the concave portion of the fixed mold are provided with limiting pins perpendicular to the plane, and a fixed mold top core plate parallel to its plane is provided through the limiting pins; symmetrically arranged L-shaped mold feet are provided on both sides of the concave portion; the four corners of the concave portion of the moving mold are provided with limiting pins perpendicular to the plane, and a moving mold top core plate parallel to its plane is provided through the limiting pins; symmetrically arranged L-shaped mold feet are provided on both sides of the concave portion; a transition ejector plate is also provided at the lower part of the moving mold top core plate; a connecting plate connected to the mold feet on the concave portion of the fixed mold is also provided.

[0005] The transition top rod plate is a convex-shaped plate with four threaded mounting holes at the four corners of its rectangular plate surface, and vertically arranged top rods on the holes; the top surface of the transition top rod plate has two grooves at both ends along its radial direction, and sliding top rods perpendicular to its plate surface are arranged in the grooves.

[0006] The sliding push rod includes a sliding push rod body located at the top and an inverted T-shaped slider located at the bottom.

[0007] Both the sliding top rod body and the slider are hollow structures, and positioning screws are installed inside their hollow cavities.

[0008] The top of the sliding top rod body is configured as a countersunk hole structure, and the top surface of the positioning screw inserted therein is lower than the top surface of the countersunk hole.

[0009] The groove has a T-shaped cross-section, and the slider can slide within the groove.

[0010] The connecting plate is a rectangular plate with evenly distributed mounting holes on its surface.

[0011] The mold base is provided with mounting grooves arranged at equal intervals.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a connecting plate and a transition ejector plate on the original shell core box, the existing small-sized 955 shell core box can be installed on the 957 shell core machine. The transition ejector plate can push the core box moving mold ejector plate to move in a balanced manner, so as to achieve the purpose of smooth and intact ejection of the core and avoid the phenomenon of cracks when the core is ejected from the mold. This not only solves the problem that the existing shell core box cannot be put into production due to relocation, but also improves the utilization rate of idle shell core machines. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 yes Figure 1 A schematic diagram of the transition top plate in the middle.

[0015] Figure 3 yes Figure 2 A schematic diagram of the sliding top rod structure.

[0016] Figure 4 This is a structural schematic diagram of the existing 955 shell core box.

[0017] In the diagram: 1. Fixed mold, 2. Moving mold, 3. Limiting pin, 4. Fixed mold core plate, 5. Mold foot, 6. Moving mold core plate, 7. Transition ejector plate, 8. Connecting plate, 9. Ejector rod, 10. Groove, 11. Sliding ejector rod, 12. Sliding ejector rod body, 13. Slider, 14. Positioning screw. Detailed Implementation

[0018] The present invention will be described in conjunction with the accompanying drawings.

[0019] like Figures 1-3 An improved shell core box for use on a shell core machine is shown, comprising an improved shell core box; the improved shell core box includes a fixed mold 1 and a moving mold 2 arranged in a mirror image, with the fixed mold 1 positioned above the moving mold 2; both the fixed mold 1 and the moving mold 2 are provided with mirror-arranged concave portions; the four corners of the concave portion of the fixed mold 1 are provided with limiting pins 3 perpendicular to the plane, and a fixed mold top core plate 4 parallel to its plane is provided through the limiting pins 3; symmetrically arranged L-shaped mold feet 5 are provided on both sides of the concave portion; the mold feet 5 are provided with equally spaced mounting grooves; the four corners of the concave portion of the moving mold 2 are provided with limiting pins 3 perpendicular to the plane, and a moving mold top core plate 6 parallel to its plane is provided through the limiting pins 3; symmetrically arranged L-shaped mold feet 5 are provided on both sides of the concave portion. The mold foot 5; a transition ejector plate 7 is also provided at the lower part of the moving mold top core plate 6; a connecting plate 8 is also provided at the mold foot 5 on the concave part of the fixed mold 1; the connecting plate 8 is a rectangular plate with evenly distributed mounting holes on its surface, and the connecting plate 8 can be installed on the mold foot 5 by bolts; the purpose of setting the connecting plate 8 here is that: the horizontal center distance of the mold foot assembly holes of the 957 shell core machine is 660mm, and the vertical center distance of the assembly holes is 130mm; the horizontal center distance of the mold foot assembly holes of the 955 shell core box is 516mm, and the vertical center distance of the assembly holes is 100mm. Therefore, four connecting plates 8 need to be made to connect the mold feet of the left and right molds of the 955 shell core box to the 957 shell core machine to achieve the purpose of assembling the 955 shell core box on the 957 shell core machine for production.

[0020] The transition top rod plate 7 is an overall convex-shaped plate with four threaded mounting holes at the four corners of its rectangular surface, and vertically arranged top rods 9 on the holes. Two grooves 10 are respectively provided at both ends of the radial direction of the top surface of the transition top rod plate 7, and a sliding top rod 11 perpendicular to the plate surface is provided within each groove 10. The groove 10 has a T-shaped cross-section, allowing the slider 13 to slide within it. The sliding top rod 11 includes a sliding top rod body 12 at the upper part and an inverted T-shaped slider 13 at the lower part. Both the sliding top rod body 12 and the slider 13 are hollow structures, and a positioning screw 14 passes through their hollow cavities. The top of the sliding top rod body 12 is a countersunk hole structure, with the top surface of the positioning screw 14 lower than the top surface of the countersunk hole. In use, the sliding top rod 11 can move within the groove 10, and its position can be achieved by tightening the positioning screw 14 so that its bottom is pressed against the groove 10. Because the 955 shell core box was installed on the 957 shell core machine, trial production revealed a problem where the core cracked when it was ejected from the moving mold by the ejector plate. Investigation revealed that this was because the 955 shell core box mold body was small; when installed on the 957 shell core machine, only the top two rods of the moving mold's ejector plate engaged with the ejector plate, while the bottom two were unsupported. This imbalance in the ejector plate caused cracks during core ejection. To avoid this, a transition ejector plate 7 was designed. The four ejector rods 9 on the transition ejector plate 7 can engage with the ejector plates on the 957 shell core machine. Four ejector rods are connected and fixed. Two movable sliding ejector rods 11 are then set up to cooperate with the two adjacent ejector rods 9 to form a triangular ejector rod. For a two-piece end cap core box, the upper three ejector rods can be used. For a four-piece end cap core box, the lower three ejector rods can be used. Based on the principle that three points determine a plane, the above three ejector rods are used to push the core box moving mold core plate to move in a balanced manner, so as to achieve the purpose of smooth and intact ejection of the core. Production verification has shown that the effect is good and ensures smooth production.

[0021] When in use, this device works by combining a connecting plate 8 and a transition ejector plate 7 on the existing shell core box. The connecting plate allows the existing small-sized 955 shell core box to be installed on the 957 shell core machine. The transition ejector plate 7 pushes the core box moving mold ejector plate 6 to move in a balanced manner, achieving the purpose of smooth and intact ejection of the core, and avoiding the phenomenon of cracks in the core when it is ejected from the mold. This not only solves the problem of existing shell core boxes being unable to be put into production due to relocation, but also improves the utilization rate of idle shell core machines.

[0022] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent modifications can be made to the technical solution of the present invention, and all such equivalent modifications fall within the protection scope of the present invention.

Claims

1. An improved shell core box for use on a shell core machine, comprising an improved shell core box; characterized in that: The improved shell core box includes a fixed mold (1) and a moving mold (2) arranged in a mirror image. The fixed mold (1) is located on the upper part of the moving mold (2). Both the fixed mold (1) and the moving mold (2) are provided with concave parts arranged in a mirror image. The four corners of the concave part of the fixed mold (1) are provided with limiting pins (3) perpendicular to the plane, and a fixed mold top core plate (4) parallel to its plane is provided through the limiting pins (3). The two sides of the concave part are provided with symmetrically arranged L-shaped mold feet (5). The four corners of the concave part of the moving mold (2) are provided with limiting pins (3) perpendicular to the plane, and a moving mold top core plate (6) parallel to its plane is provided through the limiting pins (3). The two sides of the concave part are provided with symmetrically arranged L-shaped mold feet (5). A transition ejector plate (7) is also provided at the lower part of the moving mold top core plate (6). A connecting plate (8) connected to the mold feet (5) on the concave part of the fixed mold (1) is also provided.

2. The improved shell core box for use on a shell core machine according to claim 1, characterized in that: The transition top rod plate (7) is a convex plate with four threaded mounting holes at the four corners of its rectangular plate surface and vertically arranged top rods (9) on the holes; the top surface of the transition top rod plate (7) has two grooves (10) at both ends along its radial direction, and a sliding top rod (11) perpendicular to its plate surface is provided in the groove (10).

3. The improved shell core box for use on a shell core machine according to claim 2, characterized in that: The sliding top rod (11) includes a sliding top rod body (12) located at the upper part, and an inverted T-shaped slider (13) located at the lower part.

4. The improved shell core box for use on a shell core machine according to claim 3, characterized in that: Both the sliding top rod body (12) and the slider (13) are hollow structures, and a positioning screw (14) is inserted into its hollow cavity.

5. The improved shell core box for use on a shell core machine according to claim 4, characterized in that: The top of the sliding top rod body (12) is configured as a countersunk hole structure, and the top surface of the positioning screw (14) inserted therein is lower than the top surface of the countersunk hole.

6. The improved shell core box for use on a shell core machine according to claim 2, characterized in that: The groove (10) has a T-shaped cross section, and the slider (13) can slide within the groove.

7. The improved shell core box for use on a shell core machine according to claim 1, characterized in that: The connecting plate (8) is a rectangular plate with evenly distributed mounting holes on its surface.

8. The improved shell core box for use on a shell core machine according to claim 1, characterized in that: The mold foot (5) is provided with mounting grooves arranged at equal intervals.

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