Precoated sand forming mold

Abstract

The invention relates to the technical field of precoated sand molds, in particular to a precoated sand forming mold which comprises a base, a top plate is fixedly connected to the upper end face of the base through a plurality of straight rods, a plurality of electric push rods are fixedly mounted on the upper end face of the top plate, and the output ends of the electric push rods penetrate through the top plate and are fixedly connected with an adapter cover plate. The lower end face of the switching cover plate is fixedly connected with a movable mold, and the upper end face of the base is fixedly connected with a fixed mold frame. The semiconductor refrigeration plate can be driven to ascend and descend so that the fixed mold frame can be evenly cooled, the cooling uniformity degree of the precoated sand mold can be improved, the cooling speed of all parts of the precoated sand mold can be kept, the forming quality of the precoated sand mold can be guaranteed, the precoated sand mold and the fixed mold frame can be automatically separated, and the production efficiency is improved. According to the precoated sand mold, the demolding operation efficiency of the precoated sand mold is effectively improved, and meanwhile, the demolding process of precoated sand can be buffered, so that damage to the precoated sand mold is reduced, and the molding yield of the precoated sand mold is increased.

Description

Technical Field

[0001] This invention relates to the field of coated sand mold technology, and specifically to a coated sand forming mold. Background Technology

[0002] Coated sand molds are molds made from coated sand through a specific process for molding various metal castings. The coated sand used is a new type of molding material made by mixing natural quartz sand, thermoplastic phenolic resin, hexamethylenetetramine, and various types of additives. When heated, the resin in the coated sand softens and solidifies, which can firmly bind the sand particles together. It has excellent properties such as high strength, good collapsibility, high molding accuracy, and good reusability, and is widely used in the foundry industry.

[0003] However, existing coated sand molding dies often have the following problems when used:

[0004] 1. Coated sand molds usually adopt fixed-point cooling or large-area cooling during the molding process. This results in low cooling uniformity of the coated sand mold, which can easily lead to inconsistent cooling rates in different parts of the coated sand mold, thus affecting the molding quality of the coated sand mold.

[0005] 2. The demolding process of coated sand is not convenient and efficient enough. The demolding method currently used may require a lot of manual operation, which not only consumes manpower and time, but may also damage the outer surface of the coated sand mold during the demolding process after molding, reducing the molding yield of the coated sand mold. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a coated sand molding die, which can effectively solve the problems of low cooling uniformity and inconsistent cooling rate during the molding process of coated sand mold, which affect product quality, and the inconvenience and inefficiency of demolding after coated sand molding.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] This invention provides a coated sand forming mold, comprising:

[0009] The base has a top plate fixedly connected to its upper surface by several straight rods. Several electric push rods are fixedly installed on the upper surface of the top plate. The output ends of the electric push rods pass through the top plate and are fixedly connected to a transition cover plate. A moving mold is fixedly connected to the lower surface of the transition cover plate. A fixed mold frame is fixedly connected to the upper surface of the base.

[0010] Two uniform cooling components are provided. Each uniform cooling component includes two lifting guide rails fixedly connected to the upper surface of the base. Lifting guide blocks are slidably connected to the inner sides of the two lifting guide rails. A transfer bracket is fixedly connected to the outer wall of the two lifting guide blocks. A semiconductor refrigeration plate is fixedly installed on the side of the transfer bracket near the fixed mold frame. The semiconductor refrigeration plate and the outer wall of the fixed mold frame maintain a small gap fit, which is 0.35cm. Lifting drive components are fixedly connected to the outer wall of the two lifting guide blocks.

[0011] The fixed mold frame has a movable plate slidably connected to its inner wall, and the base has a through hole in the middle. The movable plate matches the through hole, and a convenient demolding component is fixedly connected to the lower end face of the base.

[0012] Furthermore, the lifting drive component includes two transmission brackets fixedly connected to the outer walls of the two lifting guide blocks. The outer walls of the two transmission brackets are fixedly connected with toothed plates. A dual-axis motor is fixedly installed on the upper surface of the base. The two output ends of the dual-axis motor are fixedly connected with transmission gears. The two transmission gears mesh with the two toothed plates respectively.

[0013] Furthermore, the base is provided with several limiting sliding holes, and the transmission bracket and the toothed plate are slidably engaged with the inner side of the limiting sliding holes.

[0014] Furthermore, the convenient demolding assembly includes a rotating bracket fixedly connected to the lower end face of the base. A bidirectional lead screw is rotatably connected to the rotating bracket. Two translation sliders are threaded onto the bidirectional lead screw. A first hinge seat is fixedly connected to the upper end face of each of the two translation sliders. Two second hinge seats are fixedly connected to the lower end face of the movable plate. A transmission block is hinged to each of the first and second hinge seats. A telescopic support rod is fixedly connected between the two transmission blocks on adjacent first and second hinge seats. A buffer spring is fitted on the outer peripheral wall of the telescopic support rod. The two ends of the buffer spring are fixedly connected to the two transmission blocks respectively.

[0015] Furthermore, the convenient demolding assembly also includes a fixed bracket fixedly connected to the lower end face of the base, on which a servo motor is fixedly installed, and the output end of the servo motor is fixedly connected to one end of a bidirectional lead screw.

[0016] Furthermore, the semiconductor cooling plate, the dual-axis motor, the servo motor, and the external power supply equipped with control circuitry are electrically connected together.

[0017] Furthermore, two linear slide rails are fixedly connected to the lower end face of the base, and T-shaped limiting rods are fixedly connected to the outer walls of the two translation sliders. The T-shaped limiting rods slide in cooperation with the inner side of the linear slide rails.

[0018] Furthermore, a supporting base frame and a lateral balancing frame are fixedly connected to the lower end face of the base.

[0019] The technical solution provided by this invention has the following advantages compared with the known prior art:

[0020] 1. In this invention, a uniform cooling component is provided. The transmission gear is driven to rotate by controlling a dual-axis motor. The meshing transmission of the transmission gear and the toothed plate drives the lifting guide block to slide up and down along the lifting guide rail. This allows the semiconductor cooling plate to move up and down relative to the fixed mold frame. The semiconductor cooling plate and the outer wall of the fixed mold frame maintain a small gap, which allows the semiconductor cooling plate to cool the fixed mold frame uniformly. This helps to improve the cooling uniformity of the coated sand mold, maintain the cooling speed of each part of the coated sand mold, and ensure the molding quality of the coated sand mold.

[0021] 2. This invention incorporates a convenient demolding component. After the coated sand mold has cooled and formed, the moving mold can be pulled upwards by controlling an electric push rod. Simultaneously, a bidirectional lead screw can be driven to rotate, allowing two translation sliders to move towards each other. The transmission action of the transmission block and telescopic support rod pushes the movable plate upwards, automatically separating the coated sand mold and the fixed mold frame by coordinating with the upward movement of the moving mold. This effectively improves the demolding efficiency of the coated sand mold. Furthermore, the elasticity of the buffer spring and telescopic support rod during the upward movement of the movable plate buffers the demolding process of the coated sand, reducing damage to the coated sand mold and improving the molding yield of the coated sand mold. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of a portion of the uniform cooling component structure in this invention;

[0026] Figure 4 This is a schematic diagram of the base structure in this invention;

[0027] Figure 5This is a schematic diagram of the structure of the convenient demolding component in this invention.

[0028] Reference numerals: 1. Base; 2. Top plate; 3. Electric push rod; 4. Adapter cover plate; 5. Moving mold; 6. Fixed mold frame; 7. Lifting guide rail; 8. Lifting guide block; 9. Adapter bracket; 10. Semiconductor cooling plate; 11. Movable plate; 12. Through hole; 13. Transmission bracket; 14. Gear plate; 15. Dual-axis motor; 16. Transmission gear; 17. Limiting slide hole; 18. Rotating bracket; 19. Bidirectional lead screw; 20. Translation slider; 21. No. 1 hinge seat; 22. No. 2 hinge seat; 23. Transmission block; 24. Telescopic support rod; 25. Buffer spring; 26. Fixed bracket; 27. Servo motor; 28. Linear slide rail; 29. ​​T-shaped limit rod; 30. Support base frame; 31. Lateral balance frame. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] The present invention will be further described below with reference to embodiments.

[0031] Example: Refer to Figures 1 to 5A coated sand molding die includes: a base 1 and two uniform cooling components. A supporting bottom frame 30 and a lateral balancing frame 31 are fixedly connected to the lower end face of the base 1. A top plate 2 is fixedly connected to the upper end face of the base 1 via several straight rods. Several electric push rods 3 are fixedly installed on the upper end face of the top plate 2. The output ends of the electric push rods 3 pass through the top plate 2 and are fixedly connected to a transition cover plate 4. A moving mold 5 is fixedly connected to the lower end face of the transition cover plate 4. A fixed mold frame 6 is fixedly connected to the upper end face of the base 1. Each uniform cooling component includes two lifting guide rails 7 fixedly connected to the upper end face of the base 1. Lifting guide blocks 8 are slidably connected to the inner sides of the two lifting guide rails 7. A transition bracket 9 is fixedly connected to the outer wall of the two lifting guide blocks 8. The transition bracket 9 is close to the fixed mold. A semiconductor cooling plate 10 is fixedly installed on one side of the frame 6. The semiconductor cooling plate 10 and the outer wall of the fixed mold frame 6 are fitted with a small gap of 0.35cm. The outer walls of the two lifting guide blocks 8 are fixedly connected with lifting drive components. The lifting drive components include two transmission brackets 13 fixedly connected to the outer walls of the two lifting guide blocks 8. The outer walls of the two transmission brackets 13 are fixedly connected with toothed plates 14. The base 1 is provided with several limiting sliding holes 17. The transmission brackets 13 and toothed plates 14 are slidably fitted with the inner side of the limiting sliding holes 17. A dual-axis motor 15 is fixedly installed on the upper surface of the base 1. The two output ends of the dual-axis motor 15 are fixedly connected with transmission gears 16. The two transmission gears 16 mesh with the two toothed plates 14 respectively.

[0032] The transmission gear 16 is driven to rotate by the dual-axis motor 15. The meshing transmission between the transmission gear 16 and the toothed plate 14 drives the lifting guide block 8 to slide up and down along the lifting guide rail 7, thereby enabling the semiconductor cooling plate 10 to move up and down relative to the fixed mold frame 6. Since the semiconductor cooling plate 10 maintains a small gap with the outer wall of the fixed mold frame 6, the semiconductor cooling plate 10 can uniformly cool the fixed mold frame 6, which helps to improve the cooling uniformity of the coated sand mold, maintain the cooling speed of each part of the coated sand mold, and ensure the molding quality of the coated sand mold.

[0033] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5A movable plate 11 is slidably connected to the inner wall of the fixed mold frame 6. A through hole 12 is opened in the middle of the base 1, and the movable plate 11 matches the through hole 12. A convenient demolding component is fixedly connected to the lower end face of the base 1. The convenient demolding component includes a rotating bracket 18 fixedly connected to the lower end face of the base 1. A two-way lead screw 19 is rotatably connected to the rotating bracket 18. Two translation sliders 20 are threadedly connected to the two-way lead screw 19. Two linear slide rails 28 are fixedly connected to the lower end face of the base 1. T-shaped limit rods 29 are fixedly connected to the outer walls of the two translation sliders 20. The T-shaped limit rods 29 slide in cooperation with the inner side of the linear slide rails 28. A first hinge seat 21 is fixedly connected to the upper end face of the two translation sliders 20. Two second hinge seats 21 are fixedly connected to the lower end face of the movable plate 11. The first hinge seat 22, the first hinge seat 21, and the second hinge seat 22 are all hinged with transmission blocks 23. The two transmission blocks 23 on the adjacent first hinge seat 21 and second hinge seat 22 are fixedly connected with telescopic support rods 24. The outer peripheral wall of the telescopic support rod 24 is fitted with buffer springs 25. The two ends of the buffer springs 25 are fixedly connected to the two transmission blocks 23 respectively. The convenient demolding assembly also includes a fixed bracket 26 fixedly connected to the lower end face of the base 1. A servo motor 27 is fixedly installed on the fixed bracket 26. The output end of the servo motor 27 is fixedly connected to one end of the bidirectional lead screw 19. The semiconductor cooling plate 10, the dual-axis motor 15, the servo motor 27 and the external power supply equipped with control circuit are electrically connected to form a structure.

[0034] The moving mold 5 is pulled upward by controlling the electric push rod 3. At the same time, the servo motor 27 is started, and the bidirectional lead screw 19 is driven to rotate by the servo motor 27. This allows the two translation sliders 20 on the bidirectional lead screw 19 to move towards each other. The transmission action of the transmission block 23 and the telescopic support rod 24 is used to push the movable plate 11 upward. This automatically separates the coated sand mold and the fixed mold frame 6 by coordinating with the upward movement of the moving mold 5. This can effectively improve the demolding efficiency of the coated sand mold. Furthermore, when pushing the movable plate 11 upward, the elastic action of the buffer spring 25 and the telescopic support rod 24 can be used to buffer the demolding process of the coated sand, thereby reducing damage to the coated sand mold and improving the molding yield of the coated sand mold.

[0035] The working principle of this invention is as follows:

[0036] 1. During use, the electric push rod 3 is controlled to drive the adapter cover plate 4 and the moving mold 5 to move down, so as to press and shape the coated sand material in the fixed mold frame 6. During this process, the dual-axis motor 15 can be started, and the dual-axis motor 15 drives the transmission gear 16 to rotate. The meshing transmission of the transmission gear 16 and the toothed plate 14 drives the lifting guide block 8 to slide up and down along the lifting guide rail 7, so that the semiconductor cooling plate 10 can move up and down relative to the fixed mold frame 6. Since the semiconductor cooling plate 10 maintains a small gap with the outer wall of the fixed mold frame 6, the semiconductor cooling plate 10 can cool the fixed mold frame 6 evenly, which helps to improve the cooling uniformity of the coated sand mold, maintain the cooling speed of each part of the coated sand mold, and ensure the molding quality of the coated sand mold.

[0037] 2. After the coated sand mold has cooled and formed, the moving mold 5 can be pulled upward by controlling the electric push rod 3. At the same time, the servo motor 27 can be started, and the bidirectional lead screw 19 can be driven to rotate by the servo motor 27. This allows the two translation sliders 20 on the bidirectional lead screw 19 to move towards each other. The transmission action of the transmission block 23 and the telescopic support rod 24 is used to push the movable plate 11 upward. This automatically separates the coated sand mold and the fixed mold frame 6 by coordinating with the upward movement of the moving mold 5. This can effectively improve the demolding efficiency of the coated sand mold. Furthermore, when pushing the movable plate 11 upward, the elastic action of the buffer spring 25 and the telescopic support rod 24 can be used to buffer the demolding process of the coated sand, thereby reducing damage to the coated sand mold and improving the molding yield of the coated sand mold.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coated sand molding die, characterized in that, include: A base (1) is fixedly connected to a top plate (2) by several straight rods on the upper end surface of the base (1). Several electric push rods (3) are fixedly installed on the upper end surface of the top plate (2). The output ends of several electric push rods (3) pass through the top plate (2) and are fixedly connected to a transition cover plate (4). A moving mold (5) is fixedly connected to the lower end surface of the transition cover plate (4). A fixed mold frame (6) is fixedly connected to the upper end surface of the base (1). Two uniform cooling components, each of which includes two lifting guide rails (7) fixedly connected to the upper surface of the base (1), and lifting guide blocks (8) slidably connected to the inner side of the two lifting guide rails (7). A transition bracket (9) is fixedly connected to the outer wall of the two lifting guide blocks (8). A semiconductor cooling plate (10) is fixedly installed on the side of the transition bracket (9) near the fixed mold frame (6). The semiconductor cooling plate (10) and the outer wall of the fixed mold frame (6) maintain a small gap fit, which is 0.35cm. A lifting drive component is fixedly connected to the outer wall of the two lifting guide blocks (8). The fixed mold frame (6) has a movable plate (11) slidably connected to its inner wall. The base (1) has a through hole (12) in the middle. The movable plate (11) matches the through hole (12). The lower end face of the base (1) is fixedly connected to a convenient demolding component.

2. The coated sand forming mold according to claim 1, characterized in that, The lifting drive component includes two transmission brackets (13) fixedly connected to the outer walls of two lifting guide blocks (8). The outer walls of the two transmission brackets (13) are fixedly connected to toothed plates (14). A dual-axis motor (15) is fixedly installed on the upper surface of the base (1). The two output ends of the dual-axis motor (15) are fixedly connected to transmission gears (16). The two transmission gears (16) mesh with the two toothed plates (14) respectively.

3. The coated sand forming mold according to claim 2, characterized in that, The base (1) is provided with several limiting sliding holes (17), and the transmission bracket (13) and the toothed plate (14) are slidably engaged with the inner side of the limiting sliding holes (17).

4. The coated sand forming mold according to claim 2, characterized in that, The convenient demolding assembly includes a rotating bracket (18) fixedly connected to the lower end face of the base (1). A bidirectional lead screw (19) is rotatably connected to the rotating bracket (18). Two translation sliders (20) are threadedly connected to the bidirectional lead screw (19). A first hinge seat (21) is fixedly connected to the upper end face of each of the two translation sliders (20). Two second hinge seats (22) are fixedly connected to the lower end face of the movable plate (11). A transmission block (23) is hinged to each of the first hinge seat (21) and the second hinge seat (22). A telescopic support rod (24) is fixedly connected between the two transmission blocks (23) on adjacent first hinge seats (21) and second hinge seats (22). A buffer spring (25) is fitted on the outer peripheral wall of the telescopic support rod (24). The two ends of the buffer spring (25) are fixedly connected to the two transmission blocks (23) respectively.

5. A coated sand forming mold according to claim 4, characterized in that, The convenient demolding assembly also includes a fixed bracket (26) fixedly connected to the lower end face of the base (1). A servo motor (27) is fixedly installed on the fixed bracket (26), and the output end of the servo motor (27) is fixedly connected to one end of the bidirectional lead screw (19).

6. The coated sand forming mold according to claim 5, characterized in that, The semiconductor cooling plate (10), the dual-axis motor (15), the servo motor (27) are electrically connected to an external power supply equipped with a control circuit.

7. A coated sand forming mold according to claim 4, characterized in that, Two linear slide rails (28) are fixedly connected to the lower end face of the base (1), and T-shaped limiting rods (29) are fixedly connected to the outer walls of the two translation sliders (20). The T-shaped limiting rods (29) slide in cooperation with the inner side of the linear slide rails (28).

8. The coated sand forming mold according to claim 1, characterized in that, The lower end face of the base (1) is fixedly connected to a supporting base frame (30) and a lateral balance frame (31).

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