Sand core making mold with rapid cooling and molding functions

Abstract

The invention relates to the technical field of molds, and particularly discloses a sand core making mold with a rapid cooling forming function, the sand core making mold comprises an upper mold and a lower mold, the lower mold comprises a bottom plate and side plates installed at the four ends of the bottom plate, a cavity is formed in the inner end of the bottom plate, a plurality of air holes are evenly formed in the upper end of the bottom plate, and the air holes communicate with the cavity; after a sand core model is formed, an electric push rod is started to drive the lifting plate to move downwards, the lower end of the lifting plate makes contact with the inner wall of the lower end of the cavity through a sealing ring, the connecting position of a limiting rod and a bottom plate and the connecting position of the electric push rod and the bottom plate are sealed, and then an air pump is started to blow air into a lower mold; and the gas flows between the formed sand core model and the lower mold, so that the formed sand core model is separated from the lower mold, and the model is prevented from being damaged due to adhesion of the inner walls of the model and the lower mold when the model is taken.

Description

Technical Field

[0001] The invention relates to the technical field of molds, in particular to a sand core making mold with a rapid cooling and molding function. Background Art

[0002] Sand cores are key components used to form internal cavities or complex shapes in castings during the casting process. They are usually made of a mixture of high-temperature resistant sand and a binder to support the internal shape of the casting during the casting process.

[0003] Currently, sand grains and a binder are usually introduced into a combined mold, and the sand core is pressed into shape by an upper mold and a lower mold.

[0004] However, since the sand core may be bonded to a portion of the mold, the bonded area between the sand core and the mold may be damaged during demolding. Summary of the Invention

[0005] The object of the present invention is to provide a sand core making mold with a rapid cooling and molding function to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a sand core making mold with a rapid cooling and forming function, comprising an upper mold and a lower mold, wherein the lower mold comprises a bottom plate and side plates mounted at four ends of the bottom plate, the inner end of the bottom plate being provided with a cavity, the upper end of the bottom plate being uniformly provided with a plurality of air holes, the air holes and the cavity being connected, a lifting plate being movably mounted at the inner end of the cavity, a plurality of blocking columns corresponding to the air holes being uniformly fixedly mounted at the upper end of the lifting plate, and a gas separation component being mounted at the lower end of the bottom plate; A number of heat dissipation fins are evenly fixedly installed on the outer wall of each side panel, and the outer end of each side panel is connected to a driving rod through a driving plate. A number of teeth are evenly fixedly installed on one end of the driving rod, and one end of each driving rod is connected to gear 2 through tooth meshing, and gear 2 is rotatably connected to the bottom of the base plate.

[0007] Preferably, the bottom plate is rectangular, and each side wall of the bottom plate is provided with two guide holes, which are not connected to the cavity. A guide rod corresponding to the guide hole is fixedly installed at the inner end of each side plate, and one end of the guide rod is slidably inserted into the guide hole.

[0008] Preferably, a plurality of limiting rods are fixedly mounted on the lower end of the lifting plate, the lower ends of the limiting rods slide through the lower end of the bottom plate, and sealing rings are fixedly mounted on the outer sides of the upper and lower ends of the lifting plate.

[0009] Preferably, a connecting column is fixedly installed on the lower end of the base plate, a mounting plate is fixedly installed on the lower end of the connecting column, a fixing plate is fixedly installed on the lower end of the mounting plate through the connecting column, and an electric push rod is fixedly installed on the middle part of the upper end of the mounting plate. The output end of the electric push rod passes through the lower end side wall of the base plate and is fixedly connected to the lower end of the lifting plate. The electric push rod can drive the lifting plate to move in the cavity, allowing the blocking column to be inserted into the air hole.

[0010] Preferably, the gas separation component includes a connecting plate installed on one side of the fixed plate, an air pump is fixedly installed on the upper end of the connecting plate, an inflation pipe is fixedly installed on the air outlet end of the air pump, an air inlet pipe is fixedly installed on the end of the inflation pipe away from the air pump, the air inlet pipe is fixedly installed on the lower end of the base plate, and the air inlet pipe is connected to the cavity.

[0011] Preferably, a refrigerator is fixedly installed on the outer end of the air inlet pipe, a condenser is fixedly installed on the inner end of the refrigerator, and the refrigerator and the air inlet pipe are connected.

[0012] Preferably, a motor is fixedly installed at the lower end of the fixed plate, the output end of the motor passes through the fixed plate and is fixedly installed with gear one, gear two is rotatably connected between the fixed plate and the mounting plate, the outer wall of gear two is meshed with the outer wall of gear one, the thickness of gear one is greater than the thickness of gear two, two gears two are located on the upper side of gear one, and the other two gears two are located on the lower side of gear one.

[0013] Preferably, the driving rod is L-shaped, and a plurality of teeth are evenly fixedly mounted on one end of the driving rod, and the teeth are meshedly connected with the outer wall of the second gear.

[0014] Preferably, the other end of the driving rod is fixedly mounted on a driving plate, and the driving plate is fixedly mounted on the outer wall of the lower end of the side plate.

[0015] Preferably, support legs are fixedly mounted on four sides of the lower end of the base plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: After the sand core model is formed, the electric push rod is started to drive the lifting plate to move downward. The lower end of the lifting plate contacts the lower inner wall of the cavity through the sealing ring, sealing the connection between the limit rod and the bottom plate and the connection between the electric push rod and the bottom plate. Then the air pump is started to blow air into the lower mold. The gas flows between the formed sand core model and the lower mold to separate the formed sand core model and the lower mold, avoiding the adhesion of the model and the inner wall of the lower mold when taking the model, causing damage to the model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a bottom view of the overall structure of the present invention; Figure 2 This is a schematic diagram of the expanded structure of the side panel of the present invention; Figure 3This is a schematic diagram of the structure in which the side panels of the present invention are removed; Figure 4 This is a schematic diagram of the lower end structure of the bottom plate of the present invention; Figure 5 This is a second schematic diagram of the structure of the lower end of the bottom plate of the present invention; Figure 6 A schematic structural diagram of the upper and lower ends of the lifting plate of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the bottom plate of the present invention.

[0018] In the figure: 1. Base plate; 2. Side plate; 3. Heat dissipation fin; 4. Guide hole; 5. Guide rod; 6. Cavity; 7. Air hole; 8. Lifting plate; 9. Connecting column; 10. Mounting plate; 11. Electric push rod; 12. Blocking column; 13. Limiting rod; 14. Sealing ring; 15. Inlet pipe; 16. Refrigerator; 17. Fixing plate; 18. Connecting plate; 19. Air pump; 20. Inflation tube; 21. Motor; 22. Gear 1; 23. Gear 2; 24. Drive rod; 25. Drive plate; 26. Teeth; 27. Support leg. DETAILED DESCRIPTION

[0019] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 7The present invention provides a technical solution: a sand core making mold with a rapid cooling and molding function, comprising an upper mold and a lower mold, the upper mold being installed above the lower mold through a driving component, the lower mold comprising a bottom plate 1 and side plates 2 installed at the four ends of the bottom plate 1, the four sides of the lower end of the bottom plate 1 are fixedly installed with support legs 27 to support the bottom plate 1, the inner end of the bottom plate 1 is provided with a cavity 6, the upper end of the bottom plate 1 is evenly provided with a plurality of air holes 7, the air holes 7 are connected to the cavity 6, the inner end of the cavity 6 is lifted and lowered with a lifting plate 8, the upper end of the lifting plate 8 is evenly fixed with a plurality of blocking columns 12 corresponding to the air holes 7, the lower end of the lifting plate 8 is fixed Several limiting rods 13 are installed, and the lower ends of the limiting rods 13 slide through the lower end of the base plate 1. Sealing rings 14 are fixedly installed on the outer sides of the upper and lower ends of the lifting plate 8. The air hole 7 and the blocking column 12 are both located on the inner side of the sealing ring 14. The limiting rod 13 is located on the inner side of the sealing ring 14. When the lifting plate 8 moves downward, the lower end of the lifting plate 8 contacts the inner wall of the lower end of the cavity 6 through the sealing ring 14, and the connection between the limiting rod 13 and the base plate 1 is sealed. The limiting rod 13 plays a role in guiding and limiting the lifting plate 8 when it is raised and lowered, so that the blocking column 12 can be accurately inserted into the air hole 7 to block the air hole 7, thereby preventing liquid raw materials from entering the air hole 7 when casting the model.

[0021] A connecting column 9 is fixedly installed at the lower end of the base plate 1, and a mounting plate 10 is fixedly installed at the lower end of the connecting column 9. A fixing plate 17 is fixedly installed at the lower end of the mounting plate 10 through the connecting column 9. An electric push rod 11 is fixedly installed at the middle part of the upper end of the mounting plate 10. The output end of the electric push rod 11 passes through the lower end side wall of the base plate 1 and is fixedly connected to the lower end of the lifting plate 8. The electric push rod 11 can drive the lifting plate 8 to move in the cavity 6, allowing the blocking column 12 to be inserted into the air hole 7.

[0022] A gas separation component is installed at the lower end of the base plate 1, and the gas separation component includes a connecting plate 18 installed on one side of the fixed plate 17. An air pump 19 is fixedly installed on the upper end of the connecting plate 18, and an inflation pipe 20 is fixedly installed on the air outlet end of the air pump 19. An air inlet pipe 15 is fixedly installed on the end of the inflation pipe 20 away from the air pump 19. The air inlet pipe 15 is fixedly installed at the lower end of the base plate 1, and the air inlet pipe 15 is connected to the cavity 6. The air inlet pipe 15 is located on one side of the lifting plate 8. When the air pump 19 is started, air is blown into the air inlet pipe 20. The air inlet pipe 20 transports the gas into the air inlet pipe 15, and then enters the cavity 6. Subsequently, the gas enters the inner side of the lower mold through the air hole 7. The gas flows between the formed sand core model and the lower mold, separating the formed sand core model from the lower mold.

[0023] Specifically, the upper mold is moved to the upper end of the lower mold by the driving component. At this time, the electric push rod 11 drives the lifting plate 8 to contact the upper inner wall of the cavity 6, and the blocking column 12 blocks the air hole 7. Then the sand core is cast. After the sand core model is formed, the electric push rod 11 is started to drive the lifting plate 8 to move downward. The lower end of the lifting plate 8 contacts the lower inner wall of the cavity 6 through the sealing ring 14, and the connection between the limit rod 13 and the bottom plate 1 and the connection between the electric push rod 11 and the bottom plate 1 are sealed. Then the air pump 19 is started to blow air into the lower mold. The gas flows between the formed sand core model and the lower mold, so that the formed sand core model and the lower mold are separated to avoid the model and the inner wall of the lower mold from sticking when taking the model, causing damage to the model.

[0024] like Figure 2 、 Figure 3 and Figure 5 As shown, in one side embodiment, a plurality of heat dissipation fins 3 are evenly fixedly installed on the outer wall of each side panel 2. The heat dissipation fins 3 increase the contact area between the side panel 2 and the air, thereby accelerating the molding speed of the model. The outer end of each side panel 2 is connected to a driving rod 24 through a driving plate 25. A plurality of teeth 26 are evenly fixedly installed on one end of the driving rod 24. One end of each driving rod 24 is meshed with a gear 23 through the teeth 26. The gear 23 is rotatably connected to the bottom of the bottom plate 1. The bottom plate 1 is rectangular. Two guide holes 4 are provided on each side wall of the bottom plate 1. The guide holes 4 are not connected to the cavity 6. A guide rod 5 corresponding to the guide hole 4 is fixedly installed on the inner end of each side panel 2. One end of the guide rod 5 is slidably inserted into the guide hole 4. When the driving rod 24 drives the side panel 2 to move, the guide rod 5 slides in the guide hole 4 to guide and limit the side panel 2.

[0025] Specifically, after the model is cooled and formed in the lower mold, the gear 2 23 is driven to rotate at the same time, thereby driving the four driving rods 24 to push outward. The driving rods 24 move the side panels 2 outward, and the side panels 2 at the four ends of the bottom plate 1 are separated from the bottom plate 1, making it easier to take out the formed model.

[0026] like Figure 3 、 Figure 4 and Figure 5As shown, in some embodiments, a motor 21 is fixedly installed at the lower end of the fixed plate 17, and the output end of the motor 21 passes through the fixed plate 17 and is fixedly installed with a gear 1 22, and the gear 2 23 is rotatably connected between the fixed plate 17 and the mounting plate 10, and the outer wall of the gear 2 23 is meshed with the outer wall of the gear 1 22. When the motor 21 is started, it can drive the gear 1 22 to rotate, and when the gear 1 22 rotates, it drives the four gears 23 to rotate synchronously. The thickness of the gear 1 22 is greater than the thickness of the gear 2 23, wherein two gears 23 are located on the upper side of the gear 1 22, and the other two gears 23 are located on the lower side of the gear 1 22. The driving rod 24 is L-shaped, and one end of the driving rod 24 is evenly fixed with a plurality of teeth 26, and the teeth 26 are meshed with the outer wall of the gear 2 23. When the driving rod 24 moves on the gear 2 23, it will not interfere with the adjacent gear 2 23. The other end of the driving rod 24 is fixedly installed with a driving plate 25, and the driving plate 25 is fixedly installed on the outer wall of the lower end of the side plate 2.

[0027] Specifically, the motor 21 is started to drive the gear 1 22 to rotate, and the gear 1 22 drives the four gear 2s 23 to rotate. When the gear 2 23 rotates, the teeth 26 move on the gear 2 23, thereby driving the driving rod 24 and the driving plate 25 to move synchronously, and then the four side panels 2 can be driven to move synchronously on the outside of the bottom plate 1. The operation is simple and fast.

[0028] like Figure 4 As shown, in some embodiments, a refrigerator 16 is fixedly installed at the outer end of the air inlet pipe 15, and a condenser is fixedly installed at the inner end of the refrigerator 16. The refrigerator 16 and the air inlet pipe 15 are connected. More specifically, the refrigerator 16 is cylindrical, and a condenser is spirally installed on the inner side of the refrigerator 16. A metal plate is fixed on the outer wall of the condenser. After the gas enters the refrigerator 16, it comes into contact with the condenser and the metal plate. After being cooled, the gas enters the lower mold, separating the formed model while accelerating the cooling of the model.

[0029] During actual use, the upper mold is moved to the upper end of the lower mold through the driving component. At this time, the electric push rod 11 drives the lifting plate 8 to contact the upper inner wall of the cavity 6, and the blocking column 12 blocks the air hole 7. Then the sand core is cast. After the sand core model is formed, the electric push rod 11 is started to drive the lifting plate 8 to move downward. The lower end of the lifting plate 8 contacts the lower inner wall of the cavity 6 through the sealing ring 14, and the connection between the limit rod 13 and the bottom plate 1 and the connection between the electric push rod 11 and the bottom plate 1 are sealed. Then the air pump 19 is started to blow air into the lower mold. The gas flows between the formed sand core model and the lower mold to separate the formed sand core model and the lower mold. Then the four side panels 2 are driven outward to expose the formed model for easy mold removal.

[0030] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A sand core making mold with a rapid cooling and molding function, comprising an upper mold and a lower mold, characterized in that: The lower mold comprises a bottom plate (1) and side plates (2) mounted on four ends of the bottom plate (1); a cavity (6) is provided at the inner end of the bottom plate (1); a plurality of air holes (7) are evenly provided at the upper end of the bottom plate (1); the air holes (7) and the cavity (6) are communicated; a lifting plate (8) is installed at the inner end of the cavity (6) in a liftable manner; a plurality of blocking columns (12) corresponding to the air holes (7) are evenly fixedly mounted at the upper end of the lifting plate (8); and a gas separation component is installed at the lower end of the bottom plate (1); A plurality of heat dissipation fins (3) are evenly fixedly mounted on the outer wall of each side panel (2), the outer end of each side panel (2) is connected to a driving rod (24) via a driving plate (25), one end of the driving rod (24) is evenly fixedly mounted with a plurality of teeth (26), one end of each driving rod (24) is meshedly connected to a second gear (23) via the teeth (26), and the second gear (23) is rotatably connected to the bottom of the base plate (1).

2. The sand core making mold with rapid cooling and forming function according to claim 1, characterized in that: The bottom plate (1) is rectangular, and each side wall of the bottom plate (1) is provided with two guide holes (4), the guide holes (4) are not connected to the cavity (6), and a guide rod (5) corresponding to the guide hole (4) is fixedly mounted on the inner end of each side plate (2), and one end of the guide rod (5) is slidably inserted into the guide hole (4).

3. The sand core making mold with rapid cooling and forming function according to claim 1, characterized in that: A plurality of limiting rods (13) are fixedly mounted on the lower end of the lifting plate (8), and the lower ends of the limiting rods (13) slide through the lower end of the bottom plate (1). Sealing rings (14) are fixedly mounted on the outer sides of the upper and lower ends of the lifting plate (8).

4. The sand core making mold with rapid cooling and forming function according to claim 3, characterized in that: The lower end of the base plate (1) is fixedly mounted with a connecting column (9), the lower end of the connecting column (9) is fixedly mounted with a mounting plate (10), the lower end of the mounting plate (10) is fixedly mounted with a fixing plate (17) via the connecting column (9), and the middle portion of the upper end of the mounting plate (10) is fixedly mounted with an electric push rod (11), the output end of the electric push rod (11) passes through the lower end side wall of the base plate (1) and is fixedly connected to the lower end of the lifting plate (8), and the electric push rod (11) can drive the lifting plate (8) to move in the cavity (6) to allow the blocking column (12) to be inserted into the air hole (7).

5. The sand core making mold with rapid cooling and forming function according to claim 4, characterized in that: The gas separation component includes a connecting plate (18) mounted on one side of the fixed plate (17), an air pump (19) is fixedly mounted on the upper end of the connecting plate (18), an air charging pipe (20) is fixedly mounted on the air outlet end of the air pump (19), an air inlet pipe (15) is fixedly mounted on the end of the air charging pipe (20) away from the air pump (19), the air inlet pipe (15) is fixedly mounted on the lower end of the bottom plate (1), and the air inlet pipe (15) is communicated with the cavity (6).

6. The sand core making mold with rapid cooling and forming function according to claim 5, characterized in that: A refrigerator (16) is fixedly mounted on the outer end of the air inlet pipe (15), a condenser tube is fixedly mounted on the inner end of the refrigerator (16), and the refrigerator (16) and the air inlet pipe (15) are in communication.

7. The sand core making mold with rapid cooling and forming function according to claim 4, characterized in that: A motor (21) is fixedly mounted on the lower end of the fixing plate (17), and an output end of the motor (21) passes through the fixing plate (17) and is fixedly mounted with a gear 1 (22). Gear 2 (23) is rotatably connected between the fixing plate (17) and the mounting plate (10), and an outer wall of gear 2 (23) is meshed with an outer wall of gear 1 (22). The thickness of gear 1 (22) is greater than that of gear 2 (23), wherein two gears 2 (23) are located on the upper side of gear 1 (22), and the other two gears 2 (23) are located on the lower side of gear 1 (22).

8. The sand core making mold with rapid cooling and forming function according to claim 1, characterized in that: The driving rod (24) is L-shaped, and a plurality of teeth (26) are evenly fixedly mounted on one end of the driving rod (24), and the teeth (26) are meshedly connected with the outer wall of the gear 2 (23).

9. The sand core making mold with rapid cooling and forming function according to claim 1, characterized in that: The other end of the driving rod (24) is fixedly mounted with a driving plate (25), and the driving plate (25) is fixedly mounted on the outer wall of the lower end of the side plate (2).

10. The sand core making mold with rapid cooling and forming function according to claim 1, characterized in that: Support legs (27) are fixedly mounted on four sides of the lower end of the base plate (1).

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