Casting mold capable of reducing casting slag holes

Abstract

The utility model discloses a casting mold capable of reducing casting slag holes, and particularly relates to the technical field of casting molds, the casting mold comprises a casting mold, and a functional part used for reducing the casting slag holes is arranged outside the casting mold; the functional part comprises two filter screens arranged at the top of the pouring mold, a cylindrical riser is formed in the side, corresponding to the filter screens, of the pouring mold, two positioning pins distributed at intervals are arranged at the bottoms of the filter screens, the bottom ends of the positioning pins are installed in the cylindrical riser, and a plurality of overflow holes distributed at intervals are formed in the outer portion of the pouring mold. Through the arrangement of the filter screen, the cylindrical dead head and the positioning pin, the filter screen can be quickly positioned and installed, meanwhile, molten iron can be conveniently filtered, the surface quality and machining precision of iron castings are improved, the iron castings are more convenient to clean, coating and other molten impurities are discharged through the overflow hole, and the service life of the iron castings is prolonged. The defects such as slag holes in castings are reduced, and the cleanliness of iron casting oil ducts and surfaces is improved.

Description

Technical Field

[0001] This utility model relates to the field of casting mold technology, and more specifically to a casting mold for reducing slag holes in castings. Background Technology

[0002] Cast iron is a general term for alloys mainly composed of iron, carbon, and silicon. In these alloys, the carbon content exceeds the amount that can be retained in the austenite solid solution at the eutectic temperature. Items cast from molten iron are collectively called cast iron parts. Due to various factors, defects such as porosity, pinholes, slag inclusions, cracks, and pits often occur.

[0003] In the cast iron production process, slag holes and porosity are common in castings. Originally, filter screens were used in the gating system to prevent slag buildup in the mold cavity, filter molten iron, and improve its quality. However, for special products, such as ductile iron disc valves, the filtration effect of these screens is insufficient, leading to problems in the finished product.

[0004] The surface has very serious air slag, resulting in a very high rate of waste after processing. Utility Model Content

[0005] To overcome the aforementioned deficiencies of the prior art, this utility model provides a casting mold that reduces slag porosity in castings. By incorporating a filter screen, a cylindrical riser, and a positioning pin, it facilitates the rapid positioning and installation of the filter screen, as well as the filtration of molten iron, thereby improving the surface quality and machining accuracy of the cast iron parts. Furthermore, it makes cleaning the cast iron parts easier. Additionally, the overflow hole removes coatings and other molten impurities, reducing defects such as slag porosity inside the castings and improving the oil passages and surface cleanliness of the cast iron parts, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a casting mold for reducing slag porosity in castings, comprising a casting mold, wherein the casting mold is provided with functional components for reducing slag porosity in castings on its exterior;

[0007] The functional components include two filter screens on the top of the casting mold, and a cylindrical riser is provided on one side of the casting mold corresponding to the filter screen. Two spaced positioning pins are provided at the bottom of the filter screen, and the bottom ends of the positioning pins are installed inside the cylindrical riser. Multiple spaced overflow holes are provided on the outside of the casting mold.

[0008] In a preferred embodiment, the casting mold has grooves on both sides, a smooth rod is installed inside the groove, and sliders are sleeved on both ends of the smooth rod.

[0009] In a preferred embodiment, a connecting rod is installed on the side of the slider away from the slide groove, and an internally threaded tube is externally threaded to the end of the connecting rod near the slider, and an internal clamping plate is externally threaded to the internally threaded tube.

[0010] In a preferred embodiment, the end of the connecting rod away from the slider is externally threaded to an externally threaded tube, and the externally threaded tube is externally threaded to an external clamping plate.

[0011] In a preferred embodiment, a plug tube is installed on the side of the externally threaded pipe near the internally threaded pipe, and an opening groove is formed on the side of the internally threaded pipe corresponding to the plug tube.

[0012] In a preferred embodiment, the bottom of the casting mold has a plurality of spaced grooves, a spring is installed at the top of the inner cavity of the groove, a pressure plate is installed at the bottom of the spring, and the bottom of the pressure plate extends to the bottom of the casting mold.

[0013] In a preferred embodiment, positioning plates are installed on both sides of the top of the pressure plate, and a positioning groove is formed on one side of the positioning plate corresponding to the groove. The end of the positioning plate away from the pressure plate extends into the positioning groove.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] The filter screen, cylindrical riser, and positioning pin facilitate the quick positioning and installation of the filter screen, as well as the filtration of molten iron, improving the surface quality and machining accuracy of cast iron parts. It also makes the cleaning of cast iron parts easier. Furthermore, the overflow hole helps to discharge coatings and other molten impurities, reducing defects such as slag holes inside the castings and improving the cleanliness of the oil passages and surface of the cast iron parts.

[0016] The connecting rod, slider, external threaded tube, internal threaded tube, external clamping plate and internal clamping plate are used to tension the iron chain. The iron chain is then clamped and fixed by the external clamping plate and internal clamping plate, which facilitates the stable lifting and transportation of the casting mold.

[0017] By utilizing the elasticity of the spring, when the casting mold falls and contacts the ground, the pressure plate will make contact with the ground first. The spring will then absorb and cushion the impact during the fall, preventing excessive impact from damaging the casting mold and thus ensuring its integrity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side view of the groove of this utility model;

[0020] Figure 3 This is a partial schematic diagram of the groove of this utility model;

[0021] Figure 4 This is a side view of the internally threaded pipe of this utility model;

[0022] Figure 5 This is a cross-sectional view of the groove of this utility model.

[0023] The attached figures are labeled as follows: 1. Casting mold; 2. Filter screen; 3. Cylindrical riser; 4. Locating pin; 5. Overflow hole; 6. Slide groove; 7. Smooth rod; 8. Sliding block; 9. Connecting rod; 10. Internally threaded pipe; 11. Internal clamping plate; 12. Externally threaded pipe; 13. External clamping plate; 14. Insert pipe; 15. Opening slot; 16. Groove; 17. Spring; 18. Pressure plate; 19. Positioning plate; 20. Positioning groove. Detailed Implementation

[0024] 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.

[0025] Refer to the instruction manual appendix Figure 1-5 This utility model provides a casting mold for reducing slag porosity in castings, including a casting mold 1, wherein the casting mold 1 is provided with functional components for reducing slag porosity in castings on its exterior.

[0026] like Figure 1 As shown, the functional component includes two filter screens 2 on the top of the casting mold 1, and a cylindrical riser 3 is provided on one side of the casting mold 1 corresponding to the filter screen 2. Two positioning pins 4 are provided at the bottom of the filter screen 2, and the bottom end of the positioning pins 4 is installed inside the cylindrical riser 3. Multiple overflow holes 5 are provided at intervals on the outside of the casting mold 1.

[0027] The operator fixes the positioning pin 4 at the cylindrical riser 3 on the casting mold 1, and then positions the filter screen 2 through the positioning pin 4. The bottom end of the positioning pin 4 is fixed to the lower side of the cylindrical riser 3, which achieves the effect of covering the cylindrical riser 3 with the filter screen 2. This makes the molten iron flow smoothly during the casting process, and the slag blocking effect of the filter screen 2 is obvious. It also makes it easier for the cast iron parts to separate from the cylindrical riser 3. The quality of the cast iron parts is greatly improved, thus improving product quality and yield.

[0028] To facilitate the hoisting of casting mold 1, such as Figure 1-4As shown, the casting mold 1 has grooves 6 on both sides. A smooth rod 7 is installed inside the groove 6, and sliders 8 are sleeved on both ends of the smooth rod 7. A connecting rod 9 is installed on the side of the slider 8 away from the groove 6. An internally threaded tube 10 is externally threaded to the end of the connecting rod 9 near the slider 8. An internally threaded clamping plate 11 is externally threaded to the end of the internally threaded tube 10. An externally threaded tube 12 is externally threaded to the end of the connecting rod 9 away from the slider 8. An externally clamping plate 13 is externally threaded to the end of the externally threaded tube 12 near the internally threaded tube 10. A insertion tube 14 is installed on the side of the externally threaded tube 12 near the internally threaded tube 10. An opening groove 15 is opened on the side of the internally threaded tube 10 corresponding to the insertion tube 14.

[0029] The operator attaches the chain to the connecting rods 9 on both sides of the casting mold 1, placing the chain between the outer clamping plate 13 and the inner clamping plate 11. The operator then moves the slider 8 outward along the slide groove 6 and the smooth rod 7, causing the connecting rods 9 on both sides of the casting mold 1 to move synchronously, thus tensioning the chain. The operator then grasps and rotates the inner clamping plate 11, causing the internally threaded tube 10 to rotate and move inward along the connecting rod 9, allowing the internally threaded tube 10 to extend into the slide groove 6. At this point, the inner clamping plate 11 contacts the outer surface of the casting mold 1, achieving the desired tension. The slider 8 is clamped and fixed together with the light rod 7, thereby fixing the connecting rod 9. Then, the operator holds the outer clamping plate 13 and rotates it, which drives the external threaded tube 12 to move inward along the connecting rod 9 and drives the insertion tube 14 to be inserted into the opening slot 15, thus separating the iron chain. Then, the outer clamping plate 13 is rotated inward to clamp and fix the iron chain, thus fixing and limiting the iron chain. Then, the iron chain is connected to the external crane, so that the casting mold 1 can be lifted by the external crane, which improves the lifting stability, is simple to operate, and has high stability.

[0030] To mitigate the impact of the casting mold 1 falling, such as Figure 5As shown, the bottom of the casting mold 1 has multiple spaced grooves 16. A spring 17 is installed at the top of the inner cavity of the groove 16, and a pressure plate 18 is installed at the bottom of the spring 17. The bottom end of the pressure plate 18 extends to the bottom of the casting mold 1. Due to the elasticity of the spring 17, when the casting mold 1 falls and contacts the ground, the pressure plate 18 will contact the ground first. The spring 17 will absorb the impact during the fall, preventing excessive impact from damaging the casting mold 1 and ensuring the integrity of the casting mold 1. Since positioning plates 19 are installed on both sides of the top of the pressure plate 18, and a positioning groove 20 is opened on the side of the groove 16 corresponding to the positioning plate 19, the end of the positioning plate 19 away from the pressure plate 18 extends into the positioning groove 20. The cooperation between the positioning plate 19 and the positioning groove 20 can limit the displacement of the pressure plate 18, ensuring the stability of the pressure plate 18 during displacement and preventing the pressure plate 18 from tilting or shifting during displacement.

[0031] Finally: 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 casting mold for reducing slag porosity in castings, comprising a casting mold (1), characterized in that: The casting mold (1) is provided with functional components on the outside to reduce slag holes in the casting; The functional components include two filter screens (2) on the top of the casting mold (1), and a cylindrical riser (3) is provided on one side of the casting mold (1) corresponding to the filter screens (2). Two spaced positioning pins (4) are provided at the bottom of the filter screens (2). The bottom end of the positioning pins (4) is installed inside the cylindrical riser (3). Multiple spaced overflow holes (5) are provided on the outside of the casting mold (1).

2. The casting mold for reducing slag porosity in castings according to claim 1, characterized in that: The casting mold (1) has grooves (6) on both sides, and a smooth rod (7) is installed inside the groove (6), and sliders (8) are sleeved on both ends of the smooth rod (7).

3. A casting mold for reducing slag porosity in castings according to claim 2, characterized in that: A connecting rod (9) is installed on the side of the slider (8) away from the slide groove (6), and an internal threaded tube (10) is externally threaded to the end of the connecting rod (9) near the slider (8), and an internal clamping plate (11) is externally threaded to the internal threaded tube (10).

4. A casting mold for reducing slag porosity in castings according to claim 3, characterized in that: The connecting rod (9) is externally threaded to an externally threaded tube (12) at the end away from the slider (8), and the externally threaded tube (12) is externally threaded to an external clamping plate (13).

5. A casting mold for reducing slag porosity in castings according to claim 4, characterized in that: The external threaded pipe (12) is fitted with a plug tube (14) on the side near the internal threaded pipe (10), and the internal threaded pipe (10) has an opening groove (15) on the side corresponding to the plug tube (14).

6. A casting mold for reducing slag porosity in castings according to claim 1, characterized in that: The bottom of the casting mold (1) has a plurality of spaced grooves (16), a spring (17) is installed at the top of the inner cavity of the groove (16), a pressure plate (18) is installed at the bottom of the spring (17), and the bottom of the pressure plate (18) extends to the bottom of the casting mold (1).

7. A casting mold for reducing slag porosity in castings according to claim 6, characterized in that: Positioning plates (19) are installed on both sides of the top of the pressure plate (18). The groove (16) is provided with a positioning groove (20) on one side of the positioning plate (19). The end of the positioning plate (19) away from the pressure plate (18) extends into the positioning groove (20).

Images