Demoulding auxiliary device for thin-wall casting

Abstract

The utility model discloses a thin-wall casting demoulding auxiliary device which comprises an air chamber arranged in an inner mould, one side of the air chamber is provided with an air blowing hole communicated with a mould cavity, an air channel is arranged in the air chamber, the air channel is connected with an air pump fixedly installed outside the inner mould, a guide rod is fixedly installed in the air chamber, and the air blowing hole is communicated with the air blowing hole. A pressing plate is slidably mounted on the guide rod, an air plug is fixedly mounted on the pressing plate and can be inserted into the air blowing hole to plug the air blowing hole, the mold is split after a casting is formed, and if the casting cannot be demolded smoothly, the motor is started to drive the movable plate to move, so that the air plug moves to open the air blowing hole. At the moment, the air pump is started to inflate air into the air chamber through the air passage, and the air is sent between the casting and the mold wall in the mold cavity through the blowing holes to loosen the casting and demold.

Description

Technical Field

[0001] This utility model relates to the field of casting molds, and in particular to an auxiliary device for demolding thin-walled castings. Background Technology

[0002] During the casting and demolding process, thin-walled parts may get stuck in the inner mold. Since the thin-walled casting has just been cast, improper removal of the part may damage the casting. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a demolding auxiliary device for thin-walled castings, which solves the current pain points in this field.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A thin-walled casting demolding auxiliary device includes an air chamber disposed in an inner mold, an air blowing hole on one side of the air chamber communicating with the mold cavity, an air passage disposed in the air chamber, the air passage being connected to an air pump fixedly installed outside the inner mold, a guide rod fixedly installed in the air chamber, a pressure plate slidably installed on the guide rod, and an air plug fixedly installed on the pressure plate, the air plug being able to be inserted into the air blowing hole to block it.

[0006] To further explain, a movable plate is also slidably mounted on the guide rod, and a pressure spring is connected between the movable plate and the pressure plate.

[0007] To further explain, a threaded sleeve is fixedly installed on the side of the movable plate away from the pressure plate, and a motor is fixedly installed on the outside of the inner mold. The threaded shaft of the motor extends into the air chamber through the mounting hole on the side wall of the air chamber and is threadedly connected to the threaded sleeve.

[0008] To further explain, an air seal ring is slidably mounted on the threaded sleeve, and a push spring is connected between the air seal ring and the movable plate. The air seal ring can block the inner opening of the mounting hole.

[0009] In summary, the advantages of this utility model compared to the prior art are as follows: During the casting process, the air plug is blocked by the pressure of the pressure spring, and the inner surface of the mold cavity is relatively flat, which does not affect the casting process. After the casting is formed, the mold is separated. If the casting cannot be demolded smoothly, the motor is started to drive the movable plate to move, thereby moving the air plug to open the air hole. At the same time, the movable plate presses the air seal ring into the mounting hole through the push spring to seal it. At this time, the air pump is started to fill the air chamber through the air passage and send it to the space between the casting and the mold wall in the mold cavity through the air hole, so that the casting can be loosened and demolded. Attached Figure Description

[0010] The above and other objects, features, and advantages of the present invention will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated in the drawings by way of example and not limitation, in which:

[0011] Figure 1 This is a schematic diagram of a demolding aid device for thin-walled castings.

[0012] Explanation of reference numerals in the attached drawings: 10. Inner module; 11. Mold cavity; 12. Air chamber; 13. Air blowing hole; 14. Air passage; 15. Air pump; 16. Guide rod; 17. Pressure plate; 18. Air plug; 19. Movable plate; 20. Pressure spring; 21. Threaded sleeve; 22. Threaded shaft; 23. Motor; 24. Mounting hole; 25. Air seal ring; 26. Push spring. Detailed Implementation

[0013] The utility model will be further described in detail below with reference to the accompanying drawings.

[0014] A thin-walled casting demolding aid includes an air chamber 12 disposed in an inner mold 10. An air blowing hole 13 is provided on one side of the air chamber 12, communicating with a mold cavity 11. An air passage 14 is provided in the air chamber 12, and the air passage 14 is connected to an air pump 15 fixedly installed outside the inner mold 10. A guide rod 16 is fixedly installed in the air chamber 12. A pressure plate 17 is slidably mounted on the guide rod 16. An air plug 18 is fixedly mounted on the pressure plate 17. The air plug 18 is conical and can be inserted into the air blowing hole 13 to block it. The end face of the air plug 18 is flush with the inner surface of the inner mold 10. A further slidably mounted on the guide rod 16... A movable plate 19 is connected to a pressure plate 17 by a pressure spring 20. A threaded sleeve 21 is fixedly installed on the side of the movable plate 19 away from the pressure plate 17. A motor 23 is fixedly installed on the outside of the inner mold 10. The threaded shaft 22 of the motor 23 extends into the air chamber 12 through the mounting hole 24 on the side wall of the air chamber 12 and is threadedly connected to the threaded sleeve 21. An air seal ring 25 is slidably installed on the threaded sleeve 21. A push spring 26 is connected between the air seal ring 25 and the movable plate 19. After the movable plate 19 moves towards the motor 23, it can block the inner opening of the mounting hole 24 with the air seal ring 25.

[0015] When casting is in progress in the mold, the movable plate 19 moves closer to the pressure plate 17 and is pressed down by the pressure spring 20, causing the air plug 18 to block the air blowing hole 13 to prevent liquid and air leakage. After casting is completed, the motor 23 drives the movable plate 19 to move outward through the threaded connection of the threaded shaft 22 and the threaded sleeve 21, thereby causing the air plug 18 to leave the air blowing hole 13 and open it. At the same time, the air seal ring 25 blocks the mounting hole 24 to prevent air leakage. At this time, the air pump 15 starts and introduces air into the air chamber 12 through the air passage 14 and into the mold through the air blowing hole 13, thereby widening the gap between the casting in the mold and the inner mold 10, which helps the casting to be demolded.

[0016] The above description is merely an exemplary embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. The scope of protection of the present utility model is determined by the appended claims.

Claims

1. A demolding aid for thin-walled castings, characterized in that: The system includes an air chamber (12) disposed in the inner mold, an air blowing hole (13) on one side of the air chamber (12) communicating with the mold cavity (11), an air passage (14) disposed in the air chamber (12), the air passage (14) being connected to an air pump (15) fixedly installed outside the inner mold, a guide rod (16) fixedly installed in the air chamber (12), a pressure plate (17) slidably installed on the guide rod (16), an air plug (18) fixedly installed on the pressure plate (17), and the air plug (18) being able to be inserted into the air blowing hole (13) to block it.

2. The thin-walled casting demolding auxiliary device according to claim 1, characterized in that: A movable plate (19) is also slidably mounted on the guide rod (16), and a pressure spring (20) is connected between the movable plate (19) and the pressure plate (17).

3. The thin-walled casting demolding auxiliary device according to claim 2, characterized in that: A threaded sleeve (21) is fixedly installed on the side of the movable plate (19) away from the pressure plate (17). A motor (23) is fixedly installed on the outside of the inner mold. The threaded shaft (22) of the motor (23) extends into the air chamber (12) through the mounting hole (24) on the side wall of the air chamber (12) and is threadedly connected to the threaded sleeve (21).

4. The thin-walled casting demolding auxiliary device according to claim 3, characterized in that: An air seal ring (25) is slidably mounted on the threaded sleeve (21). A push spring (26) is connected between the air seal ring (25) and the movable plate (19). The air seal ring (25) can block the inner opening of the mounting hole (24).

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