Welding reinforcing device for V-method casting after rapid cooling

Abstract

The invention discloses a rapid cooling post-welding reinforcing device for V-method casting, which comprises a base, a support plate, a sand mold bearing assembly, a forming assembly and a vibrator, the support plate is mounted at the top end of the base, the vibrator is mounted on the outer surface of the sand mold bearing assembly, the sand mold bearing assembly comprises a sand box mounted at the top end of the support plate, and the sand box is filled with fine sand; the device comprises a sand box, fine sand is arranged in the sand box, a plurality of reinforcing plates are uniformly placed in the fine sand in the sand box, a plurality of blanking holes are formed in the outer surfaces of the reinforcing plates, the reinforcing plates are laminated, and a connecting rope is mounted between every two reinforcing plates. The reinforcing plates are arranged in the sand box, so that the reinforcing plates can fill the sand layer in a layered manner, the sand layer can be effectively supported and fixed, and the sand layer is prevented from being deformed or collapsed due to impact and pressure of molten metal in the pouring process.

Description

Technical Field

[0001] The invention relates to the technical field of V-method casting, in particular to a rapid cooling and welding reinforcement device for V-method casting. Background Art

[0002] V-method casting uses a plastic film to seal the sand box and uses a vacuum exhaust system to extract the air in the mold. There is a pressure difference between the inside and outside of the mold, which makes the dry sand dense and forms the required cavity. After core setting, box closing, pouring and vacuuming, the casting solidifies and the negative pressure is released, the molding sand collapses to obtain the casting.

[0003] In the V-method casting process, although the negative pressure system can effectively improve the compactness of the sand mold, in actual operation, especially after the vibrator is used to assist compaction, tiny gaps or loose areas will inevitably appear inside the sand mold. These gaps will not only reduce the overall compressive strength and hardness of the sand mold, but may also become a source of defects in the casting, such as pores, sand inclusions, etc., thus affecting the mechanical properties and surface quality of the casting.

[0004] In addition, insufficient sand inside the sand mold will make the surface uneven, which will cause poor flow of molten metal during the casting process, leading to defects such as cold shut and flow marks on the surface of the casting. Summary of the invention

[0005] The object of the present invention is to provide a V-method casting rapid cooling and welding reinforcement device to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a V-method casting rapid cooling and welding reinforcement device, comprising a base, a support plate, a sand mold bearing assembly, a molding assembly, and a vibrator, wherein the support plate is mounted on the top of the base, and the vibrator is mounted on the outer surface of the sand mold bearing assembly, the sand mold bearing assembly comprises a sand box mounted on the top of the support plate, the interior of the sand box is filled with fine sand, and a plurality of reinforcement plates are evenly placed in the fine sand inside the sand box, a plurality of drop holes are opened on the outer surface of the reinforcement plate, and the reinforcement plates are stacked, and a connecting rope is installed between every two reinforcement plates, a first film is installed on the surface of the support plate close to the sand box, and a second film is installed on the inner wall of the sand box, the first film and the second film are both made of polyethylene film containing EVA, a feeding mechanism is installed inside the sand box, and the feeding mechanism comprises a storage box installed on the inner wall of the sand box, a motor is installed inside the storage box, a spiral impeller is fixedly installed on the output shaft of the motor, and a discharge port is opened at one end of the storage box.

[0007] As a preferred technical solution of the present invention, an exhaust mechanism is provided on the outer surface of the support plate, and the exhaust mechanism includes an air pump installed on the outer surface of the support plate, an exhaust hole is opened inside the support plate near the first film, an air intake pipe is installed in communication between the output end of the air pump and the exhaust hole, a cavity is opened on the inner wall of the sand box, an air intake pipe is installed in communication between the cavity and the air intake pipe, a one-way valve is provided on the air intake pipe, and a connecting pipe is threadedly installed on the air intake pipe through a threaded sleeve.

[0008] As a preferred technical solution of the present invention, the molding assembly includes a punch arranged at the top of the sand box, a third film is installed on the surface of the punch, and a fourth film is installed on the surface of the sand box close to the punch. The third film and the fourth film are both made of polyvinyl chloride film, and a welding part is arranged between the third film and the fourth film.

[0009] As a preferred technical solution of the present invention, the molding assembly is installed at the top of the sand box, and a filter assembly is provided on the inner wall of the sand box close to the punch. The filter assembly includes a filter cartridge installed inside the inner wall of the punch, and multiple connecting holes are provided at both ends of the filter cartridge. Activated carbon crushed is provided inside the filter cartridge, and filter tubes are installed in communication between the multiple filter cartridges. The filter tubes are installed in communication with the air inlet end of the air pump, and a one-way valve is provided on the filter tube. A filter box connected to the filter tube is installed on the outer surface of the sand box.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. The present invention provides stacked reinforcement plates and installs the reinforcement plates inside the sand box, so that the reinforcement plates can fill the sand layer in layers, thereby effectively supporting and fixing the sand layer, preventing the sand layer from being deformed or collapsed due to the impact and pressure of the molten metal during the pouring process, and the reinforcement plates can separate and fix different layers of sand, reduce the gaps and looseness between the sand layers, and improve the overall density of the sand mold, thereby improving the dimensional accuracy and surface finish of the casting.

[0012] 2. The present invention installs a storage box with a spiral impeller inside the sand box, and uses the spiral impeller to accurately and evenly guide the sand mold inside the storage box into the sand box. This process not only fills the gaps caused by vibration, but also performs additional compaction on the sand layer through the rotation of the spiral impeller. This compaction effect makes the contact between particles inside the sand mold closer, thereby significantly improving the overall compactness and stability of the sand mold, and the tight sand mold structure provides stable support and constraints for the solidification of the molten metal, so that the casting can maintain its designed shape and size during the solidification process, thereby improving the dimensional accuracy of the casting.

[0013] 3. The present invention installs a filter cartridge between the sand box and the molding assembly. The activated carbon fragments filled in the filter cartridge have a strong adsorption capacity and can efficiently capture harmful gases and pollutants released by the sand mold during the molding process, such as sulfur dioxide and nitrogen oxides. Through the filtering effect of the filter cartridge, the negative impact of these harmful gases on the casting can be greatly reduced, and the overall quality and reliability of the casting can be improved. At the same time, the filter cartridge can also effectively block impurities such as dust and particles from entering the mold, preventing them from becoming a pollution source inside the casting, further ensuring the cleanliness and precision of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the V-method casting mold of the present invention;

[0015] Figure 2 It is a side view structural schematic diagram of the present invention;

[0016] Figure 3 It is a schematic diagram of the internal structure of the sand mold bearing assembly of the present invention;

[0017] Figure 4 is a schematic diagram of a fourth film structure of the present invention;

[0018] Figure 5 It is a schematic diagram of the internal structure of the mold body of the present invention;

[0019] Figure 6 It is a schematic diagram of the structure of the reinforcement plate of the present invention;

[0020] Figure 7 It is a schematic diagram of the internal structure of the storage box of the present invention;

[0021] Figure 8 It is a schematic diagram of the exhaust mechanism structure of the present invention;

[0022] Fig. 9 is a schematic diagram of the second film structure of the present invention;

[0023] Fig.10 For the present invention Figure 8 Schematic diagram of the structure at A in FIG.

[0024] Fig.11 It is a schematic diagram of the internal structure of the filter cartridge of the present invention.

[0025] In the figure: 1. base; 2. support plate; 3. sand mold bearing assembly; 31. sand box; 32. reinforcement plate; 33. drop hole; 34. connecting rope; 35. feeding mechanism; 351. storage box; 352. motor; 353. spiral impeller; 354. discharge port; 36. exhaust mechanism; 361. exhaust hole; 362. air pump; 363. suction pipe; 364. intake pipe; 365. connecting pipe; 366. cavity; 367. filter assembly; 3671. filter cartridge; 3672. filter tube; 3673. filter box; 3674. connecting hole; 3675. activated carbon fragments; 37. first film; 38. second film; 4. molding assembly; 41. punch; 42. third film; 43. fourth film; 5. vibrator. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] See also Figure 1-11 A rapid cooling and welding reinforcement device for V-method casting provided in an embodiment of the present application includes a base 1, a support plate 2, a sand mold bearing assembly 3, a molding assembly 4, and a vibrator 5. The support plate 2 is installed on the top of the base 1, and the vibrator 5 is installed on the outer surface of the sand mold bearing assembly 3. The sand mold bearing assembly 3 includes a sand box 31 installed on the top of the support plate 2. The interior of the sand box 31 is filled with fine sand. A plurality of reinforcement plates 32 are evenly placed in the fine sand inside the sand box 31. A plurality of blanking holes 33 are opened on the outer surface of the reinforcement plates 32, and the reinforcement plates 32 are stacked. A connecting rope 34 is installed between every two reinforcement plates 32.

[0029] Among them, when the sand box 31 is in use, the reinforcement plates 32 are arranged in layers inside the sand box 31, and the sand layers can be filled in layers, so as to effectively support and fix the sand layers and prevent the sand layers from being deformed or collapsed due to the impact and pressure of the molten metal during the pouring process. In addition, by arranging connecting ropes 34 between the reinforcement plates 32, a connection can be formed between the reinforcement plates 32, so that the reinforcement plates 32 are evenly and stably installed inside the sand mold inside the sand box 31, further improving the overall density of the sand mold. At the same time, the connecting ropes 34 also facilitate the replacement and maintenance of the reinforcement plates 32.

[0030] In the technical solution of the embodiment of the present application, a first film 37 is installed on the surface of the support plate 2 close to the sand box 31, and a second film 38 is installed on the inner wall of the sand box 31. Both the first film 37 and the second film 38 are made of polyethylene film containing EVA.

[0031] Among them, the polyethylene film has a high elongation and plastic deformation capacity, can closely fit the shape of complex castings, form the required cavity, thereby ensuring the accuracy and contour clarity of the castings, and the polyethylene film is easy to detach from the castings, reducing defects on the surface of the castings, such as sand sticking, sand holes, etc., and improving the surface quality of the castings. At the same time, the second film 38 further enhances the sealing performance of the sand box 31, prevents air from entering the sand mold, ensures that the air pump 362 can extract the air in the mold, and form the required pressure difference, and the polyethylene film can protect the inner wall of the sand box 31 from erosion and wear by molten metal, sand particles, etc., and prolongs the service life of the sand box 31.

[0032] In the technical solution of the embodiment of the present application, a feeding mechanism 35 is installed inside the sand box 31, and the feeding mechanism 35 includes a storage box 351 installed on the inner wall of the sand box 31, and a motor 352 is installed inside the storage box 351. A spiral impeller 353 is fixedly installed on the output shaft of the motor 352, and a discharge port 354 is opened at one end of the storage box 351.

[0033] Before the sand box 31 is installed and used, the motor 352 is started, and the motor 352 drives the spiral impeller 353 to rotate, and the spiral impeller 353 is used to accurately and evenly introduce the sand mold inside the storage box 351 into the sand box 31 through the discharge port 354. This process not only fills the gaps caused by vibration, but also performs additional compaction on the sand layer through the rotation of the spiral impeller 353. This compaction effect makes the contact between the particles inside the sand mold closer, thereby significantly improving the overall compactness and stability of the sand mold.

[0034] In some embodiments, an exhaust mechanism 36 is provided on the outer surface of the support plate 2, and the exhaust mechanism 36 includes an air pump 362 installed on the outer surface of the support plate 2. An exhaust hole 361 is opened inside the support plate 2 near the first film 37, and an air intake pipe 363 is installed between the output end of the air pump 362 and the exhaust hole 361.

[0035] Among them, the excess gas inside the sand box 31 can be discharged through the air pump 362. The exhaust can ensure that the molten metal is not disturbed by the gas during the pouring process, effectively avoiding defects such as pores and shrinkage holes inside the casting, thereby improving the internal quality of the casting. The pressure required for pouring can be reduced by exhausting, because the gas no longer occupies the cavity space, and the molten metal can more easily enter and fill the cavity. At the same time, exhausting can accelerate the cooling and solidification process of the molten metal, because the gas no longer affects the heat transfer, which helps to shorten the production cycle and improve production efficiency.

[0036] In some embodiments, a cavity 366 is formed on the inner wall of the sand box 31, an air inlet pipe 364 is installed between the cavity 366 and the air suction pipe 363, a one-way valve is provided on the air inlet pipe 364, and a connecting pipe 365 is threadedly installed on the air inlet pipe 364 through a threaded sleeve.

[0037] Among them, the air pump 362 can evacuate the cavity 366 opened inside the inner wall of the sand box 31. Through the vacuum state, a nearly perfect heat insulation layer is formed between the sand box 31 and the casting, which effectively isolates the high temperature released by the casting during the solidification process and prevents the heat from quickly diffusing to the surrounding environment, thereby maintaining the temperature stability of the casting area, which is conducive to improving the quality of the casting. The efficient heat insulation effect means that the heat generated during the casting process is better confined to the casting and its surroundings, reducing thermal pollution to the external environment.

[0038] In some embodiments, the molding component 4 includes a punch 41 arranged at the top of the sand box 31, a third film 42 is installed on the surface of the punch 41, and a fourth film 43 is installed on the surface of the sand box 31 close to the punch 41. The third film 42 and the fourth film 43 are both made of polyvinyl chloride film, and a welding part is arranged between the third film 42 and the fourth film 43.

[0039] Among them, the third film 42 and the fourth film 43 are both made of polyvinyl chloride film, which has good isolation performance and can effectively prevent the casting from directly contacting the surface of the punch 41, thereby avoiding the occurrence of sand sticking, helping to maintain the cleanliness and integrity of the mold, and improving the surface finish and dimensional accuracy of the casting. The existence of the film also plays a role in protecting the mold, reducing the erosion and wear of the mold by the metal liquid, and extending the service life of the mold. During the pouring process, the metal liquid may splash out for various reasons, posing a threat to the operator. The isolation effect of the film can effectively prevent the splashing of the metal liquid and ensure the safety of the operator.

[0040] In some embodiments, the molding assembly 4 is installed at the top of the sand box 31, and a filter assembly 367 is provided on the inner wall of the sand box 31 close to the punch 41. The filter assembly 367 includes a filter cartridge 3671 installed inside the inner wall of the punch 41. A plurality of connecting holes 3674 are provided at both ends of the filter cartridge 3671, and activated crushed carbon 3675 is provided inside the filter cartridge 3671.

[0041] Among them, the activated carbon fragments 3675 filled inside the filter cartridge 3671 have extremely strong adsorption capacity, and can efficiently capture harmful gases and pollutants released by the sand mold during the molding process. Through the filtering effect of the filter cartridge 3671, the negative impact of these harmful gases on the casting can be greatly reduced, thereby improving the overall quality and reliability of the casting.

[0042] In some embodiments, a filter tube 3672 is installed between multiple filter cartridges 3671, the filter tube 3672 is installed in communication with the air inlet end of the air pump 362, and a one-way valve is provided on the filter tube 3672. A filter box 3673 connected to the filter tube 3672 is installed on the outer surface of the sand box 31.

[0043] The harmful gas adsorbed inside the filter tube 3671 is concentrated by the air pump 362 in cooperation with the filter tube 3672, and further filtered by the filter box 3673 on the filter tube 3672, thereby reducing the gas residue inside the sand box 31 and ensuring the cleanliness and precision of the casting.

[0044] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A V-method casting rapid cooling and welding reinforcement device, comprising a base (1), a support plate (2), a sand mold bearing assembly (3), a molding assembly (4), and a vibrator (5), characterized in that: The support plate (2) is mounted on the top of the base (1); the vibrator (5) is mounted on the outer surface of the sand mold bearing assembly (3); the sand mold bearing assembly (3) comprises a sand box (31) mounted on the top of the support plate (2); the interior of the sand box (31) is filled with fine sand; a plurality of reinforcing plates (32) are evenly placed in the fine sand inside the sand box (31); a plurality of drop holes (33) are opened on the outer surface of the reinforcing plates (32); the reinforcing plates (32) are stacked; and a connecting rope (34) is installed between every two reinforcing plates (32); A first film (37) is installed on the surface of the support plate (2) close to the sand box (31), and a second film (38) is installed on the inner wall of the sand box (31), and both the first film (37) and the second film (38) are made of polyethylene film containing EVA; A feeding mechanism (35) is installed inside the sand box (31), and the feeding mechanism (35) includes a storage box (351) installed on the inner wall of the sand box (31), and a motor (352) is installed inside the storage box (351). A spiral impeller (353) is fixedly installed on the output shaft of the motor (352), and a discharge port (354) is opened at one end of the storage box (351).

2. A V-method casting rapid cooling and welding reinforcement device according to claim 1, characterized in that: The outer surface of the support plate (2) is provided with an exhaust mechanism (36), and the exhaust mechanism (36) comprises an air pump (362) installed on the outer surface of the support plate (2); an exhaust hole (361) is opened inside the support plate (2) near the first film (37); an air intake pipe (363) is installed between the output end of the air pump (362) and the exhaust hole (361); The inner wall of the sand box (31) is provided with a cavity (366), an air intake pipe (364) is installed between the cavity (366) and the air suction pipe (363), a one-way valve is provided on the air intake pipe (364), and a connecting pipe (365) is threadedly installed on the air intake pipe (364) through a threaded sleeve.

3. The V-method casting rapid cooling and welding reinforcement device according to claim 1, characterized in that: The molding assembly (4) comprises a male mold (41) arranged at the top of a sand box (31), a third film (42) is installed on the surface of the male mold (41), and a fourth film (43) is installed on the surface of the sand box (31) close to the male mold (41), the third film (42) and the fourth film (43) are both made of polyvinyl chloride film, and a welding part is arranged between the third film (42) and the fourth film (43).

4. The V-method casting rapid cooling and welding reinforcement device according to claim 1, characterized in that: The molding assembly (4) is installed at the top of the sand box (31); a filter assembly (367) is provided on the inner wall of the sand box (31) close to the male mold (41); the filter assembly (367) comprises a filter cartridge (3671) installed inside the inner wall of the male mold (41); a plurality of connection holes (3674) are provided at both ends of the filter cartridge (3671); and activated carbon fragments (3675) are provided inside the filter cartridge (3671); A filter tube (3672) is installed in communication between the plurality of filter cartridges (3671), the filter tube (3672) is installed in communication with the air inlet end of the air pump (362), and a one-way valve is provided on the filter tube (3672), and a filter box (3673) in communication with the filter tube (3672) is installed on the outer surface of the sand box (31).

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