Sand casting mold with uniform cooling function

Abstract

The utility model relates to the technical field of molds, and discloses a uniformly-cooled sand casting mold which comprises a lower mold, and a base is fixed at the bottom end of the lower mold. According to the sand casting mold with the uniform cooling function, in the using process of the mold, when a solution is cooled and formed in the lower mold, a heat dissipation plate is fixed to the bottom end in the lower mold, heat in the lower mold can be transferred and guided out through the arranged heat dissipation plate, meanwhile, a water pump can be controlled to be started, cooling liquid in a heat absorption pipe is pumped out into a cooling pipe, and the cooling effect is improved. After heat in cooling liquid is absorbed and cooled by the cooling fins, the cooling liquid is guided back to the interior of the heat absorption pipe through the second connecting pipe to circularly cool the interior of the mold, the interior of the mold can be uniformly cooled through the coil pipe type structure, cooling forming of a workpiece is assisted, adhesion of the workpiece in the mold is reduced and prevented, and the mold quality is improved. The problem that the bottom of a workpiece in a mold is inconvenient to uniformly cool is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a uniformly cooled sand casting mold. Background Art

[0002] Sand casting is a method of forming a mold by placing a finished part model or a wooden model in sand and then filling the area around the model with sand. It is widely used in the manufacturing industry, especially in the field of metal casting, in the production and processing of small handicrafts to large mechanical parts.

[0003] However, when the sand casting mold is used to cast a metal workpiece, when the workpiece is formed between the sand molds inside the mold, the bottom of the workpiece inside the mold generally cannot obtain effective heat dissipation and cooling, resulting in a slow cooling and forming speed at the bottom of the workpiece, and it is easy to stick to the inside of the mold. This is insufficient and is not convenient for uniformly cooling and forming the bottom of the workpiece inside the mold to prevent adhesion.

[0004] Now, a novel uniformly cooled sand casting mold is proposed to solve the above-mentioned shortcomings. Utility Model Content

[0005] The purpose of the utility model is to provide a uniformly cooled sand casting mold to solve the problem in the above background technology that it is inconvenient to uniformly cool the bottom of the workpiece inside the mold.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a uniformly cooled sand casting mold, comprising a lower mold, a base fixed to the bottom end of the lower mold, an upper mold provided on the top end of the lower mold, and a cooling mechanism provided at the bottom end of the lower mold for uniformly cooling the bottom of the cast workpiece;

[0007] The heat dissipation mechanism comprises a mounting bracket, a connecting pipe 1, a fan, an inner cavity, a heat plate, a heat absorption pipe, a cooling fin, a cooling pipe, a water pump, a connecting pipe 2, a connecting pipe 3, a liquid filling port and a screw cap. The bottom end of the lower mold is provided with an inner cavity, and the top of the inner cavity is fixed with a heat absorption pipe, the bottom end of the heat plate is fixed with a mounting bracket, the left side of the lower mold is provided, and the right side of the mounting bracket is fixed with a fan, the inside of the mounting bracket is fixed with a cooling pipe, and the outside of the cooling pipe is fixed with a heat dissipation fin, the top of the cooling pipe passes through the inside of the top of the mounting bracket and is fixed with connecting pipe 1, the bottom of the rear end of the mounting bracket is fixed with a water pump, the input end of the water pump is fixed with connecting pipe 3, the output end of the water pump is fixed with connecting pipe 2, the top of the connecting pipe 1 is fixed with a liquid filling port, and the top outside the liquid filling port is rotatably connected with a screw cap.

[0008] Furthermore, the two ends of the left side of the heat absorption tube respectively pass through the interior of the left side of the lower mold, the right side of the connecting tube one is fixedly connected to the front end of the left side of the heat absorption tube, the rear end of the cooling tube passes through the interior of the rear end of the mounting frame and is fixedly connected to the front end of the connecting tube three, and the right side of the connecting tube two is fixedly connected to the rear end of the left side of the heat absorption tube.

[0009] Furthermore, the liquid filling port is connected to the interior of connecting tube one, the heat absorption tube is connected to the interior of the cooling tube through connecting tube one, the cooling tube is connected to the interior of connecting tube three, and the connecting tube two is connected to the interior of the heat absorption tube.

[0010] Preferably, a fixing frame is fixed at the middle position of the top ends of both sides of the lower mold, and a fixing foot is fixed at the middle position of the bottom ends of both sides of the upper mold, and an inner groove is opened inside the right side of the fixing foot, and a locking rod is hingedly connected to the inside of the fixing frame, and a locking ring is provided on the outside of the locking rod.

[0011] Furthermore, the inner groove passes through the inside of the right side of the fixed foot, the locking rod passes through the inside of the inner groove, the outside of the locking rod is provided with an external thread, the inside of the locking ring is provided with an internal thread matching the external thread, and the locking ring is rotatably connected to the outside of the locking rod.

[0012] Preferably, fixed covers are respectively provided at both ends of the outside of the lower mold, and mounting bolts are respectively provided at the four corners of the front end of the fixed cover and the four corners of the rear end of the fixed cover, and mounting holes for cooperating with the mounting bolts are respectively opened inside the four corners at both ends of the lower mold.

[0013] Furthermore, the mounting bolt passes through the interior of the fixing cover and is rotatably connected in the mounting hole.

[0014] Preferably, guide rods are fixed on both sides of the top of the lower mold, and the tops of the guide rods pass through the interior of the upper mold. A filling port is fixed at the middle position of the top of the upper mold, and a cavity is provided inside the bottom of the lower mold.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the uniformly cooled sand casting mold not only facilitates uniform cooling and molding of the bottom of the workpiece inside the mold to prevent adhesion, facilitates auxiliary locking of the sand casting mold during mold closing and casting, but also facilitates anti-collision protection of the exterior of the sand casting mold;

[0016] The mold is provided with a lower mold, a mounting frame, a connecting pipe 1, a fan, an inner cavity, a heat sink, a heat absorption pipe, a heat dissipation fin, a cooling pipe, a water pump, a connecting pipe 2, a connecting pipe 3, a liquid filling port and a screw cap. When the mold is used, the casting workpiece is first placed inside the mold cavity, and then sand is filled around the workpiece. Finally, the workpiece is taken out to form a casting mold. During the casting process, the upper mold is moved down and the mold is closed between the top of the lower mold. Then, the metal solution is injected from the injection port. When the solution is cooled and formed inside the lower mold, a heat sink is fixed at the bottom end of the lower mold. The heat sink can be used to transfer and conduct the heat inside the lower mold. At the same time, the water pump can be controlled to start and the coolant inside the heat absorption pipe is drawn into the cooling pipe. The heat in the coolant is absorbed and cooled by the heat dissipation fins, and then it is guided back to the inside of the heat absorption pipe by the connecting pipe 2 for circulating cooling inside the mold. The coil structure can be used to evenly cool the inside of the mold, assist in the cooling and forming of the workpiece, and reduce and prevent the workpiece from sticking inside the mold.

[0017] By providing a lower mold, an upper mold, a fixed foot, a fixing frame, a locking ring and an inner groove, when the mold is used, after the upper mold is closed with the top of the lower mold for casting, the locking rods provided at the top ends of both sides of the lower mold can be rotated upward and clamped into the inner grooves inside the fixing feet. Then, by using the locking rings, they are screwed onto the outside of the locking rods and pressed downward against the top ends of the fixing feet, so that the lower mold and the upper mold can be auxiliary locked after the mold is closed, thereby reducing the influence of the up and down displacement of the mold on the accuracy of the cast workpiece;

[0018] By providing a lower mold, a fixing cover, mounting bolts and mounting holes, when the casting mold is in use, the fixing covers can be respectively installed and fixed to the outer side of the lower mold at both ends of the outer side of the lower mold using the mounting bolts. The fixing covers can provide auxiliary anti-collision protection for the outer side of the mold, thereby reducing and avoiding damage to the outside of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0020] Figure 2 This is an enlarged bottom view of the heat absorbing tube of the present invention;

[0021] Figure 3 This is an enlarged side view of the mounting bracket of the present invention;

[0022] Figure 4 This is a schematic diagram of an enlarged partial cross-section of the fixed foot of the utility model.

[0023] In the figure: 1. Base; 2. Lower mold; 3. Mounting frame; 4. Connecting pipe 1; 5. Fan; 6. Guide rod; 7. Upper mold; 8. Injection port; 9. Fixed foot; 10. Fixed frame; 11. Fixed cover; 12. Cavity; 13. Inner cavity; 14. Heat sink; 15. Heat absorbing pipe; 16. Mounting bolt; 17. Mounting hole; 18. Heat sink fin; 19. Cooling pipe; 20. Water pump; 21. Connecting pipe 2; 22. Connecting pipe 3; 23. Locking rod; 24. Locking ring; 25. Inner groove; 26. Liquid filling port; 27. Screw cap. DETAILED DESCRIPTION

[0024] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figure 1-4 A uniformly cooled sand casting mold comprises a lower mold 2, a base 1 is fixed to the bottom end of the lower mold 2, an upper mold 7 is provided on the top end of the lower mold 2, and a cooling mechanism for uniformly cooling the bottom of the casting workpiece is provided at the bottom end of the lower mold 2;

[0026] The cooling mechanism includes a mounting frame 3, a connecting pipe 1 4, a fan 5, an inner cavity 13, a heat sink 14, a heat absorbing pipe 15, a heat dissipating fin 18, a cooling pipe 19, a water pump 20, a connecting pipe 2 21, a connecting pipe 3 22, a liquid filling port 26, and a screw cap 27. The inner cavity 13 is provided at the bottom end of the lower mold 2, and the heat sink 14 is fixed to the top of the inner cavity 13. The heat absorbing pipe 15 is fixed to the bottom end of the heat dissipating plate 14. The mounting frame 3 is provided on the left side of the lower mold 2, and the fan 5 is fixed to the right side of the mounting frame 3. The cooling pipe 19 is fixed inside the mounting frame 3, and the heat dissipating fin 18 is fixed to the outside of the cooling pipe 19. The top end of the cooling pipe 19 passes through the interior of the top end of the mounting frame 3 and is fixed to a connecting pipe 1 4. A water pump 20 is fixed to the bottom of the rear end of the mounting frame 3. The input end of the water pump 20 is fixed to a connecting pipe 3 22, and the output end of the water pump 20 is fixed to a connecting pipe 2 21. The top end of the connecting pipe 1 4 is fixed to a liquid filling port 26, and the top end of the outer portion of the liquid filling port 26 is rotatably connected to a screw cap 27.

[0027] The two ends of the left side of the heat absorption tube 15 respectively pass through the interior of the left side of the lower mold 2, the right side of the connecting tube 14 is fixedly connected to the front end of the left side of the heat absorption tube 15, the rear end of the cooling tube 19 passes through the interior of the rear end of the mounting frame 3 and is fixedly connected to the front end of the connecting tube 3 22, the right side of the connecting tube 21 is fixedly connected to the rear end of the left side of the heat absorption tube 15, the liquid filling port 26 is connected to the interior of the connecting tube 14, the heat absorption tube 15 is connected to the interior of the cooling tube 19 through the connecting tube 14, the cooling tube 19 is connected to the interior of the connecting tube 3 22, and the connecting tube 21 is connected to the interior of the heat absorption tube 15;

[0028] Specifically, if Figure 1 and Figure 2 As shown, the casting workpiece is first placed inside the mold cavity 12, and then sand is filled around the workpiece. Finally, the workpiece is taken out to form a casting mold. During the casting process, the upper mold 7 is moved down and closed between the top of the lower mold 2, and then the metal solution is injected from the injection port 8. When the solution is cooled and formed inside the lower mold 2, a heat sink 14 is fixed at the bottom end of the lower mold 2. The heat sink 14 can be used to transfer and discharge the heat inside the lower mold 2. At the same time, the water pump 20 can be controlled to start and the coolant inside the heat absorption pipe 15 is pumped into the cooling pipe 19. After the heat in the coolant is absorbed and cooled by the heat dissipation fins 18, it is re-guided back to the inside of the heat absorption pipe 15 by the connecting pipe 21 to circulate and cool the inside of the mold. The coil structure can evenly cool the inside of the mold, assist in the rapid cooling and forming of the workpiece, and reduce adhesion. Coolant can be added to the inside by using the liquid filling port 26, and the fan 5 can be controlled to start to blow the heat dissipation fins 18 to accelerate the cooling speed of the internal coolant.

[0029] Embodiment 2: A fixing frame 10 is fixed at the middle position of the top of both sides of the lower mold 2, and a fixing foot 9 is fixed at the middle position of the bottom of both sides of the upper mold 7. An inner groove 25 is provided inside the right side of the fixing foot 9. A locking rod 23 is hingedly connected to the inside of the fixing frame 10, and a locking ring 24 is provided on the outside of the locking rod 23. The inner groove 25 passes through the inside of the right side of the fixing foot 9, and the locking rod 23 passes through the inside of the inner groove 25. An external thread is provided on the outside of the locking rod 23, and an internal thread matching the external thread is provided on the inside of the locking ring 24. The locking ring 24 is rotatably connected to the outside of the locking rod 23.

[0030] Specifically, if Figure 1 and Figure 3 As shown, when the upper mold 7 is cast after being closed with the top of the lower mold 2, the locking rods 23 provided at the tops on both sides of the lower mold 2 can be rotated upward and snapped into the inner grooves 25 inside the fixed legs 9. Then, the locking rings 24 can be screwed into the outside of the locking rods 23 and pressed downward against the tops of the fixed legs 9 to assist in locking the lower mold 2 and the upper mold 7 after closing the mold.

[0031] Embodiment 3: A fixing cover 11 is provided at each end of the exterior of the lower mold 2. Mounting bolts 16 are provided at the four corners of the front end of the front fixing cover 11 and the four corners of the rear end of the rear fixing cover 11. Mounting holes 17 for fitting with the mounting bolts 16 are provided inside the four corners of the two ends of the lower mold 2. The mounting bolts 16 pass through the interior of the fixing cover 11 and are rotatably connected to the mounting holes 17.

[0032] Specifically, if Figure 1 and Figure 4 As shown, the fixed covers 11 can be respectively fixed to the outer side of the lower mold 2 at both ends of the outer side of the lower mold 2 using the mounting bolts 16, and the fixed covers 11 can be used to provide auxiliary anti-collision protection for the outer side of the mold.

[0033] Guide rods 6 are fixed on both sides of the top of the lower mold 2, and the top of the guide rods 6 passes through the interior of the upper mold 7. A filling port 8 is fixed at the middle position of the top of the upper mold 7, and a cavity 12 is set inside the bottom of the lower mold 2.

[0034] Working principle: When the sand casting mold of the present invention is in use, the casting workpiece is first placed inside the mold cavity 12, and then the sand is filled around the workpiece, and finally the workpiece is taken out to form a casting mold. During the casting process, the upper mold 7 is moved down and closed between the top of the lower mold 2, and then the metal solution is injected from the injection port 8. When the solution is cooled and formed inside the lower mold 2, a heat sink 14 is fixed at the bottom end of the lower mold 2. The heat sink 14 can be used to transfer and guide the heat inside the lower mold 2. At the same time, the water pump 20 can be controlled to start and the coolant inside the heat absorption pipe 15 is pumped into the cooling pipe 19. The heat in the coolant is absorbed and cooled by the heat dissipation fins 18, and then it is re-guided back to the inside of the heat absorption pipe 15 through the connecting pipe 21 to circulate inside the mold. When used for circular cooling, the coil structure can be used to evenly cool the inside of the mold, assisting in the rapid cooling and forming of the workpiece. At the same time, when the upper mold 7 is closed between the top of the lower mold 2 and cast, the locking rods 23 set at the tops on both sides of the lower mold 2 can be rotated upward and stuck into the inner groove 25 inside the fixed foot 9, and then the locking ring 24 can be screwed into the outside of the locking rod 23 and pressed down against the top of the fixed foot 9 to assist in locking the lower mold 2 and the upper mold 7 after closing the mold. When the casting mold is used, the fixed cover 11 set at both ends of the outside of the lower mold 2 can be installed and fixed to the outside of the lower mold 2 using the mounting bolts 16. The outer cover 11 provided can provide auxiliary anti-collision protection for the outside of the mold.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A uniformly cooled sand casting mold, comprising a lower mold (2), characterized in that: A base (1) is fixed to the bottom end of the lower mold (2), an upper mold (7) is provided at the top end of the lower mold (2), and a cooling mechanism for uniformly cooling the bottom of the cast workpiece is provided at the bottom end of the lower mold (2); The cooling mechanism comprises a mounting frame (3), a connecting pipe 1 (4), a fan (5), an inner cavity (13), a heat sink (14), a heat absorbing pipe (15), a heat dissipation fin (18), a cooling pipe (19), a water pump (20), a connecting pipe 2 (21), a connecting pipe 3 (22), a liquid filling port (26) and a screw cap (27). The inner cavity (13) is provided at the bottom end of the lower mold (2), and a heat sink (14) is fixed at the top end of the inner cavity (13). The heat absorbing pipe (15) is fixed at the bottom end of the heat dissipation plate (14). The mounting frame (3) is provided on the left side of the lower mold (2), and the fan (5) is fixed on the right side of the mounting frame (3). The cooling pipe (19) is fixed inside the mounting frame (3), and the heat dissipation fin (18) is fixed on the outside of the cooling pipe (19). The top end of the cooling pipe (19) passes through the interior of the top end of the mounting frame (3) and is fixed with a connecting pipe 1 (4). A water pump (20) is fixed to the bottom of the rear end of the mounting frame (3). The input end of the water pump (20) is fixed with a connecting pipe 3 (22). The output end of the water pump (20) is fixed with a connecting pipe 2 (21). The top end of the connecting pipe 1 (4) is fixed with a liquid filling port (26), and the top end of the outside of the liquid filling port (26) is rotatably connected with a screw cap (27).

2. A uniformly cooled sand casting mold according to claim 1, characterized in that: The two ends of the left side of the heat absorption tube (15) respectively pass through the interior of the left side of the lower mold (2), the right side of the connecting tube (4) is fixedly connected to the front end of the left side of the heat absorption tube (15), the rear end of the cooling tube (19) passes through the interior of the rear end of the mounting frame (3) and is fixedly connected to the front end of the connecting tube (22), and the right side of the connecting tube (21) is fixedly connected to the rear end of the left side of the heat absorption tube (15).

3. The uniformly cooled sand casting mold according to claim 1, wherein: The liquid filling port (26) is connected to the interior of the connecting pipe (4), the heat absorption pipe (15) is connected to the interior of the cooling pipe (19) through the connecting pipe (4), the cooling pipe (19) is connected to the interior of the connecting pipe (22), and the connecting pipe (21) is connected to the interior of the heat absorption pipe (15).

4. The uniformly cooled sand casting mold according to claim 1, wherein: A fixing frame (10) is fixed at the middle position of the top ends of both sides of the lower mold (2), and a fixing foot (9) is fixed at the middle position of the bottom ends of both sides of the upper mold (7), and an inner groove (25) is provided inside the right side of the fixing foot (9). A locking rod (23) is hingedly connected inside the fixing frame (10), and a locking ring (24) is provided outside the locking rod (23).

5. The uniformly cooled sand casting mold according to claim 4, characterized in that: The inner groove (25) passes through the inside of the right side of the fixed foot (9), the locking rod (23) passes through the inside of the inner groove (25), the outside of the locking rod (23) is provided with an external thread, the inside of the locking ring (24) is provided with an internal thread matching the external thread, and the locking ring (24) is rotatably connected to the outside of the locking rod (23).

6. The uniformly cooled sand casting mold according to claim 1, characterized in that: The two ends of the lower mold (2) are respectively provided with fixed covers (11), and the four corners of the front end of the fixed cover (11) and the four corners of the rear end of the fixed cover (11) are respectively provided with mounting bolts (16), and the four corners at both ends of the lower mold (2) are respectively provided with mounting holes (17) for fitting with the mounting bolts (16).

7. The uniformly cooled sand casting mold according to claim 6, characterized in that: The mounting bolt (16) passes through the interior of the fixed cover (11) and is rotatably connected in the mounting hole (17).

8. The uniformly cooled sand casting mold according to claim 1, wherein: Guide rods (6) are fixed on both sides of the top of the lower mold (2), and the top of the guide rods (6) passes through the interior of the upper mold (7). A material injection port (8) is fixed at the middle position of the top of the upper mold (7), and a cavity (12) is provided inside the bottom of the lower mold (2).

Images