A large-scale casting mold hole cleaning device

Abstract

The utility model provides a large -scale casting mould hole cleaning device, include: shell, the shell is horn -like, the bottom inlay of shell fixedly has and injects the injection pipe of abrasive flow, the bottom fixedly has sealing cover of injection pipe, the inside fixed support plate of shell, the export that has opened of support plate, the inside movable installation of shell has auger, the side fixed screw rod of support plate center, the outside of screw rod is equipped with the sleeve rod through thread, the sleeve rod is fixed with filling rod. The utility model abrasive flow is through extrusion and enters the position between filling rod and inner hole inboard wall, through process is the polishing cleaning process to inner hole, the filling rod occupies most of the space inside the mould inner hole at this moment, abrasive flow only needs to fill in between filling rod and mould inner hole inboard wall like this, greatly reduces the dosage of abrasive flow, and guarantees polishing effect.

Description

Technical Field

[0001] This utility model relates to the field of mold cleaning, and in particular to a device for cleaning the inner hole of a large casting mold. Background Technology

[0002] During repeated use, casting molds are subjected to the scouring effect of high-temperature molten metal, causing metal oxides, sand particles, and other residues to gradually adhere to the inner surface of the holes, resulting in a significant increase in hole wall roughness. This surface quality deterioration can cause multiple problems in subsequent casting processes: increased resistance to liquid metal flow, a higher rate of surface defects in the castings, and ultimately affect the mechanical properties and dimensional accuracy of the finished product.

[0003] Currently, the industry commonly uses abrasive flow machining technology for internal hole cleaning. The process principle is as follows: abrasive particles are mixed with a binder to form a pumpable semi-solid abrasive flow, which is then injected into the inner hole of a mold via a high-pressure pumping system. Hydrodynamics drives the abrasive particles to rub against the hole wall, achieving surface polishing and residue removal. After polishing, ultrasonic cleaning or high-pressure gas purging is required to ensure complete removal of abrasive particles and impurities.

[0004] For large casting molds, the inner diameter of the inner hole is generally large, and this process has significant technical contradictions: 1. Large abrasive consumption: The large diameter inner hole needs to be completely filled with abrasive flow to ensure full contact with the hole wall; 2. Low regeneration efficiency: The used abrasive grains form a mixture with metal chips and sand grains, which needs to be sorted in multiple stages to achieve regeneration; 3. Low effective utilization rate: Abrasive grains far from the hole wall enter the regeneration process without participating in actual grinding. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a device for cleaning the inner hole of a large casting mold.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A large casting mold internal hole cleaning device includes: a housing, which is flared to allow one side to cover the outside of the internal hole and the other side to be easily removed. An injection pipe for abrasive flow injection is embedded and fixed at the bottom of the housing. A sealing cap is welded and fixed at the bottom of the injection pipe. A support plate is welded and fixed inside the housing. A discharge port is provided on the support plate to facilitate the discharge of abrasive flow. An auger is movably installed inside the housing. A screw is welded and fixed at the center of the side of the support plate, and a sleeve is threaded onto the outside of the screw. A filler rod is welded and fixed to the sleeve.

[0007] Preferably, to reduce the weight of the filler rod, the filler rod is hollow. The outer diameter of the filler rod is smaller than the inner diameter of the mold's inner hole, so that when grinding and cleaning, the filler rod is inserted into the inner hole, and there is a gap between the filler rod and the inner wall of the inner hole.

[0008] Preferably, in order to ensure that the outer shell covers the outer side of the inner hole, an extension ring is welded and fixed around the outer side of the outer shell.

[0009] Preferably, a motor is fixed to the side of the housing by a mounting bracket, and the output end of the motor is fixedly connected to the auger by a coupling.

[0010] Preferably, a storage mechanism for storing abrasive flow is installed at the lower end of the sealing cover.

[0011] Preferably, the storage mechanism includes a storage tank that engages with the sealing cap via threads. A piston block is slidably mounted inside the storage tank. An electric actuator is embedded and fixed at the bottom of the storage tank. To move the piston block inside the storage tank, the telescopic end of the electric actuator is bolted to the piston block, storing the abrasive stream inside the storage tank. It is then threaded onto the lower end of the sealing cap. In use, the electric actuator is activated, causing the piston block to move inside the storage tank, compressing the abrasive stream inside the storage tank and injecting it into the outer casing through an injection pipe.

[0012] Preferably, the storage tank is a transparent tank to facilitate observation of the abrasive flow storage volume inside the storage tank.

[0013] Preferably, the switches controlling the motor and the electric push rod are both embedded and fixed on the housing (not shown in the figure), which facilitates manual operation by the operator as needed.

[0014] Compared with the prior art, the beneficial effects of this utility model include: 1. The abrasive flow is extruded into the space between the filler rod and the inner wall of the inner hole. The process is the grinding and cleaning process of the inner hole. At this time, the filler rod occupies most of the space inside the mold hole. The abrasive flow injected in this way only needs to fill the space between the filler rod and the inner wall of the mold hole, which greatly reduces the amount of abrasive flow used and ensures the grinding effect.

[0015] 2. With the reduction in the amount of abrasive flow used, the weight of abrasive flow that needs to be regenerated will also be greatly reduced, thus saving subsequent regeneration resources. Attached Figure Description

[0016] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 This is a schematic diagram of the structure of a large casting mold inner hole cleaning device proposed in this utility model; Figure 2 This is a partially exploded schematic diagram of a large casting mold inner hole cleaning device proposed in this utility model. Figure 3 For the appendix Figure 1 A sectional view; Figure 4 For the appendix Figure 2 A sectional view; The following are the labels in the diagram: 1. Outer shell; 2. Extension ring; 3. Motor; 4. Screw; 5. Support plate; 6. Discharge port; 7. Screw; 8. Sleeve rod; 9. Filling rod; 10. Injection pipe; 11. Sealing cap; 12. Storage tank; 13. Piston block; 14. Electric push rod. Detailed Implementation

[0017] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0018] According to one embodiment of the present invention, in conjunction with Figures 1-4 As shown.

[0019] A large casting mold inner hole cleaning device includes: a housing 1, which is flared to allow one side of the housing 1 to cover the outside of the inner hole and the other side to be easily removed. An injection pipe 10 for abrasive flow injection is embedded and fixed at the bottom of the housing 1. A sealing cap 11 is welded and fixed at the bottom of the injection pipe 10. A support plate 5 is welded and fixed inside the housing 1. An outlet 6 is provided on the support plate 5 to facilitate the discharge of abrasive flow. An auger 4 is movably installed inside the housing 1. A screw 7 is welded and fixed at the center of the side of the support plate 5, and a sleeve 8 is threaded onto the outside of the screw 7. A filler rod 9 is welded and fixed to the sleeve 8. To reduce the weight of the filler rod 9, the filler rod 9 is hollow inside. The outer diameter of the filler rod 9 is smaller than the inner diameter of the mold inner hole, so that during grinding and cleaning, the filler rod 9 is inserted into the inner hole, creating a gap between the filler rod 9 and the inner wall of the inner hole.

[0020] In this embodiment, in order to ensure that the outer shell 1 covers the outer side of the inner hole, an extension ring 2 is welded and fixed around the outer side of the outer shell 1.

[0021] In this embodiment, a motor 3 is fixed to the side of the housing 1 by a mounting bracket, and the output end of the motor 3 is fixedly connected to the auger 4 by a coupling.

[0022] In this embodiment, a storage mechanism for storing abrasive flow is installed at the lower end of the sealing cover 11.

[0023] Specifically, the storage mechanism includes a storage tank 12 that engages with a sealing cap 11 via threads. To facilitate observation of the abrasive flow storage volume inside the storage tank 12, the tank is transparent. A piston block 13 is slidably mounted inside the storage tank 12. An electric push rod 14 is embedded and fixed at the bottom of the storage tank 12. To move the piston block 13 inside the storage tank 12, the telescopic end of the electric push rod 14 is bolted to the piston block 13, storing the abrasive flow inside the storage tank 12. It is then threaded onto the lower end of the sealing cap 11. During use, the electric push rod 14 is activated, causing the piston block 13 to move inside the storage tank 12, compressing the abrasive flow inside the storage tank 12 and injecting it into the outer casing 1 through the injection pipe 10.

[0024] In this embodiment, the switches for controlling the motor 3 and the electric push rod 14 are both embedded and fixed on the housing 1 (not shown in the figure), which facilitates manual operation by the operator as needed.

[0025] Working principle: Before use, the abrasive flow is stored inside the storage tank 12 and the storage tank 12 is installed at the lower end of the sealing cover 11 by the thread. The electric push rod 14 is started, which drives the piston block 13 to move along the inside of the storage tank 12. The position of the abrasive flow is observed through the transparent tank until the surface of the abrasive flow is at the top of the inside of the storage tank 12. Furthermore, based on the required inner hole diameter, select a filler rod 9 with an outer diameter smaller than the inner hole diameter. Install the filler rod 9 on the screw rod 7 through the sleeve rod 8. After completion, insert the filler rod 9 into the inner hole of the mold to be cleaned, so that there is a gap between the filler rod 9 and the inner wall of the mold inner hole. At the same time, the extension ring 2 is attached to the outer surface of the mold. Then, press the extension ring 2 so that the extension ring 2 has a force that squeezes the outside of the mold. Start the motor 3 and electric push rod 14. The electric push rod 14 injects the abrasive flow into the housing 1 through the injection pipe 10. At the same time, the motor 3 drives the auger 4 to rotate, transporting the abrasive flow injected into the housing 1 to one side of the support plate 5 and discharging it through the outlet 6. Then, it enters the inner hole to be cleaned. At this time, the abrasive flow is squeezed into the position between the filling rod 9 and the inner wall of the inner hole. This process is the grinding and cleaning process of the inner hole until the cleaning is completed.

[0026] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A device for cleaning the inner hole of a large casting mold, comprising: The outer shell (1) is characterized in that the outer shell (1) is trumpet-shaped; The bottom of the outer shell (1) is inlaid with an injection tube (10) for abrasive flow injection. A sealing cap (11) is fixed to the bottom of the injection tube (10). A support plate (5) is fixed inside the outer shell (1); The support plate (5) has an outlet (6). An auger (4) is movably installed inside the outer casing (1); A screw (7) is fixed at the center of the side of the support plate (5), and a sleeve (8) is threaded onto the outside of the screw (7); a filler rod (9) is fixed on the sleeve (8).

2. The large casting mold inner hole cleaning device according to claim 1, characterized in that, The filling rod (9) is hollow inside; the outer diameter of the filling rod (9) is smaller than the inner diameter of the mold inner hole.

3. The large casting mold inner hole cleaning device according to claim 1, characterized in that, An extension ring (2) is fixed around the outer side of the outer shell (1).

4. The large casting mold inner hole cleaning device according to claim 1, characterized in that, A motor (3) is fixed to the side of the outer casing (1), and the output end of the motor (3) is fixedly connected to the auger (4).

5. The large casting mold inner hole cleaning device according to claim 4, characterized in that, The lower end of the sealing cap (11) is equipped with a storage mechanism for storing abrasive flow.

6. The large casting mold inner hole cleaning device according to claim 5, characterized in that, The storage mechanism includes a storage tank (12); a piston block (13) is slidably installed inside the storage tank (12); an electric push rod (14) is embedded and fixed at the bottom of the storage tank (12), and the telescopic end of the electric push rod (14) is fixed on the piston block (13).

7. The large casting mold inner hole cleaning device according to claim 6, characterized in that, The storage tank (12) is a transparent tank.

8. The large casting mold inner hole cleaning device according to claim 6, characterized in that, The switches controlling the motor (3) and the electric push rod (14) are both embedded and fixed on the outer casing (1).

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