A mold to prevent deformation of rectangular castings

Abstract

This utility model relates to a mold for preventing deformation of rectangular castings, belonging to the technical field of rectangular casting molds. It includes an installation platform, with a limiting frame fixedly installed on the top of the platform. A wooden mold is placed inside the limiting frame, and a lost foam casting is placed inside the wooden mold. A casting pipe is placed inside the wooden mold, and an anti-deformation component is installed inside the wooden mold. The anti-deformation component includes a control screw rotatably mounted on the inner wall of the wooden mold. Two inner pressure plates are threadedly connected to the surface of the control screw, and two outer pressure plates are threadedly connected to the surface of the control screw. This mold for preventing deformation of rectangular castings, by setting the anti-deformation component inside the wooden mold, places the lost foam casting between the inner and outer pressure plates. By rotating the control screw, the inner and outer pressure plates move synchronously, compacting the dry sand and increasing its density, thus preventing deformation of the rectangular casting.

Description

Technical Field

[0001] This utility model relates to the field of rectangular casting mold technology, specifically a mold for preventing deformation of rectangular castings. Background Technology

[0002] Rectangular castings are a common type of casting in industrial production. For single-piece or small-batch production, lost foam casting is preferred due to its advantages: simplified model structure, eliminating the need for mold removal; improved casting dimensional accuracy and significantly enhanced surface finish; simplified process flow, reducing worker skill requirements; and cavity structures that do not require additional cores, reducing molding difficulty. For mass production, wooden mold molding is used.

[0003] Utility model patent CN202291284U discloses a mold for preventing deformation of rectangular castings, including a wooden mold disposed within a rectangular cavity. The wooden mold has a tie-rib groove along its minor axis that connects to the inner wall of the rectangular cavity, and the tie-rib groove contains tie ribs. This effectively reduces the deformation of the casting without requiring initial trial production to determine and adjust the deformation compensation amount.

[0004] However, after casting, the mold used to prevent deformation of rectangular castings requires cleaning and removing the cooled material in the tie rod groove, which increases the processing steps. Therefore, a mold to prevent deformation of rectangular castings is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a mold for preventing deformation of rectangular castings. It has the advantages of strengthening and supporting rectangular castings and preventing deformation, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A mold for preventing deformation of rectangular castings includes an installation platform, a limiting frame fixedly installed on the top of the installation platform, a wooden mold placed inside the limiting frame, a lost foam casting placed inside the wooden mold, a casting pipe placed inside the wooden mold, and an anti-deformation component provided inside the wooden mold.

[0008] The anti-deformation component includes a control screw rotatably mounted on the inner wall of the wooden mold. Two inner pressure plates are threadedly connected to the surface of the control screw, and two outer pressure plates are threadedly connected to the surface of the control screw. The inner pressure plates are located inside the lost foam, and the outer pressure plates are located outside the lost foam.

[0009] Furthermore, the surface of one of the control screws is sequentially provided with a lower forward thread, a lower reverse thread, an upper forward thread, and an upper reverse thread, while the surface of the other control screw is sequentially provided with a lower reverse thread, a lower forward thread, an upper reverse thread, and an upper forward thread.

[0010] Furthermore, two transmission gears are rotatably mounted on one side of the wooden mold, the two transmission gears meshing with each other, and one end of the control screw is fixedly connected to the transmission gears.

[0011] Furthermore, a drive turntable is rotatably mounted on one side of the wooden mold, and the drive turntable is fixedly connected to one end of one of the control screws. A crank handle is rotatably mounted on one side of the drive turntable.

[0012] Furthermore, a gear groove adapted to the transmission gear is provided on one side of the limiting frame, and a turntable groove adapted to the drive turntable is provided on one side of the limiting frame.

[0013] Furthermore, the bottom of the installation platform is provided with an installation base plate, and dome plates are fixedly installed at the four corners of the bottom of the installation platform, with top columns fixedly installed at the bottom of the dome plates.

[0014] Furthermore, a round base plate is fixedly installed at each of the four top corners of the mounting base plate, and a base column is fixedly installed on the top of the round base plate.

[0015] Furthermore, a vibration spring is fixedly installed between the dome plate and the bottom plate, the top column and the bottom column are inserted inside the vibration spring, and a vibration motor is fixedly installed at the bottom of the mounting platform.

[0016] Compared with the prior art, this utility model provides a mold for preventing deformation of rectangular castings, which has the following beneficial effects:

[0017] 1. This mold for preventing deformation of rectangular castings uses anti-deformation components inside the wooden mold. The lost foam is placed between the inner and outer pressure plates. By controlling the rotation of the screw, the inner and outer pressure plates move synchronously, compressing the dry sand and increasing its density to prevent deformation of the rectangular casting. This solves the problem of common molds for preventing deformation of rectangular castings requiring the cleaning and removal of cooled material in the tie rod groove after casting, which increases the processing steps.

[0018] 2. The mold for preventing deformation of rectangular castings is designed to use a vibrating motor installed at the bottom of the mounting platform. When dry sand is added, it vibrates the sand evenly, and the vibration frequency is increased by a vibration spring to enhance the vibration effect. Attached Figure Description

[0019] Figure 1 This is a front sectional view of the structure of this utility model;

[0020] Figure 2 This is a top sectional view of the structure of this utility model;

[0021] Figure 3 This is a top sectional view of the wooden mold of this utility model;

[0022] Figure 4 This is a three-dimensional view of the inner pressure plate and the outer pressure plate of this utility model.

[0023] In the diagram: 1. Installation platform; 2. Limiting frame; 3. Wooden mold; 4. Lost foam casting; 5. Casting pipe; 6. Control screw; 61. Lower forward thread; 62. Lower reverse thread; 63. Upper forward thread; 64. Upper reverse thread; 7. Inner pressure plate; 8. Outer pressure plate; 9. Transmission gear; 10. Drive turntable; 11. Handle; 12. Gear groove; 13. Turntable groove; 14. Mounting base plate; 15. Dome plate; 16. Top column; 17. Round bottom plate; 18. Bottom column; 19. Vibration spring; 20. Vibration motor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1 to 4 In this embodiment, a mold for preventing deformation of rectangular castings includes an installation platform 1, a limiting frame 2 fixedly installed on the top of the installation platform 1, a wooden mold 3 placed inside the limiting frame 2, a lost foam 4 placed inside the wooden mold 3, a casting pipe 5 placed inside the wooden mold 3, and an anti-deformation component set inside the wooden mold 3.

[0026] The anti-deformation component includes a control screw 6 rotatably installed on the inner wall of the wooden mold 3. Two inner pressure plates 7 are threadedly connected to the surface of the control screw 6, and two outer pressure plates 8 are threadedly connected to the surface of the control screw 6. The inner pressure plates 7 are located inside the lost foam 4, and the outer pressure plates 8 are located outside the lost foam 4.

[0027] Specifically, the screw 6 is controlled to rotate, causing the inner pressure plate 7 to press against the inner wall of the lost foam 4 and the outer pressure plate 8 to press against the outer wall of the lost foam 4, thus compressing the dry sand between the inner pressure plate 7 and the lost foam 4, and compressing the dry sand between the outer pressure plate 8 and the lost foam 4, making the dry sand at the side wall of the rectangular casting more compact, and preventing the rectangular casting from deforming after casting.

[0028] Please see Figures 2 to 4In this embodiment, the surface of one of the control screws 6 is sequentially provided with a lower forward thread 61, a lower reverse thread 62, an upper forward thread 63 and an upper reverse thread 64, and the surface of the other control screw 6 is sequentially provided with a lower reverse thread 62, a lower forward thread 61, an upper reverse thread 64 and an upper forward thread 63.

[0029] Two transmission gears 9 are rotatably mounted on one side of the wooden mold 3. The two transmission gears 9 mesh with each other, and one end of the control screw 6 is fixedly connected to the transmission gears 9.

[0030] Secondly, a drive turntable 10 is rotatably mounted on one side of the wooden mold 3. The drive turntable 10 is fixedly connected to one end of one of the control screws 6. A crank handle 11 is rotatably mounted on one side of the drive turntable 10. The crank handle 11 drives the drive turntable 10, which in turn drives one of the control screws 6 to rotate, which in turn drives the transmission gear 9 to rotate, which in turn drives the other transmission gear 9 to rotate, which in turn drives the two control screws 6 to rotate in opposite directions. Through different thread directions, the inner pressure plate 7 and the outer pressure plate 8 are moved along a specified direction.

[0031] Meanwhile, a gear groove 12 adapted to the transmission gear 9 is provided on one side of the limiting frame 2, and a turntable groove 13 adapted to the drive turntable 10 is provided on the other side of the limiting frame 2. The gear groove 12 and the turntable groove 13 prevent interference with the limiting frame 2.

[0032] Please see Figure 1 In this embodiment, the bottom of the installation platform 1 is provided with an installation base plate 14, and a dome plate 15 is fixedly installed at each of the four corners of the bottom of the installation platform 1. A top column 16 is fixedly installed at the bottom of the dome plate 15.

[0033] Among them, a round base plate 17 is fixedly installed at each of the four top corners of the mounting base plate 14, and a base column 18 is fixedly installed on the top of the round base plate 17.

[0034] Secondly, a vibration spring 19 is fixedly installed between the dome plate 15 and the bottom plate 17. The top column 16 and the bottom column 18 pass through the inside of the vibration spring 19, and a vibration motor 20 is fixedly installed at the bottom of the mounting platform 1. The vibration motor 20 drives the mounting platform 1 to vibrate, and the vibration amplitude is amplified by the vibration spring 19 to vibrate the dry sand evenly.

[0035] The working principle of the above embodiment is as follows: control the screw 6 to rotate, drive the inner pressure plate 7 to press against the inner wall of the lost foam 4, and the outer pressure plate 8 to press against the outer wall of the lost foam 4, so as to compress the dry sand between the inner pressure plate 7 and the lost foam 4, and compress the dry sand between the outer pressure plate 8 and the lost foam 4, making the dry sand at the side wall of the rectangular casting more compact.

[0036] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented.

[0037] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold for preventing deformation of a rectangular cast, comprising a mounting platform (1), characterized in that: The top of the installation platform (1) is fixedly installed with a limiting frame (2), a wooden mold (3) is placed inside the limiting frame (2), a lost foam mold (4) is placed inside the wooden mold (3), a casting pipe (5) is placed inside the wooden mold (3), and an anti-deformation component is provided inside the wooden mold (3). The anti-deformation component includes a control screw (6) rotatably mounted on the inner wall of the wooden mold (3). The surface of the control screw (6) is threaded with two inner pressure plates (7) and the surface of the control screw (6) is threaded with two outer pressure plates (8). The inner pressure plates (7) are located inside the lost foam (4) and the outer pressure plates (8) are located outside the lost foam (4).

2. A mold for preventing deformation of a rectangular cast product according to claim 1, characterized in that: One of the control screws (6) has a lower forward thread (61), a lower reverse thread (62), an upper forward thread (63) and an upper reverse thread (64) sequentially formed on its surface, and the other control screw (6) has a lower reverse thread (62), a lower forward thread (61), an upper reverse thread (64) and an upper forward thread (63) sequentially formed on its surface.

3. A mold for preventing deformation of a rectangular cast product according to claim 1, characterized in that: Two transmission gears (9) are rotatably mounted on one side of the wooden mold (3). The two transmission gears (9) mesh with each other, and one end of the control screw (6) is fixedly connected to the transmission gears (9).

4. The mold for preventing deformation of rectangular castings according to claim 3, characterized in that: A drive turntable (10) is rotatably mounted on one side of the wooden mold (3). The drive turntable (10) is fixedly connected to one end of one of the control screws (6). A crank handle (11) is rotatably mounted on one side of the drive turntable (10).

5. A mold for preventing deformation of a rectangular cast product according to claim 4, characterized in that: The limiting frame (2) has a gear groove (12) adapted to the transmission gear (9) on one side, and a turntable groove (13) adapted to the drive turntable (10) on one side.

6. A mold for preventing deformation of a rectangular cast product according to claim 1, characterized in that: The bottom of the installation platform (1) is provided with an installation base plate (14), and a dome plate (15) is fixedly installed at each of the four corners of the bottom of the installation platform (1). A top column (16) is fixedly installed at the bottom of the dome plate (15).

7. A mold for preventing deformation of a rectangular cast product according to claim 6, characterized in that: A round base plate (17) is fixedly installed at each of the four top corners of the mounting base plate (14), and a base column (18) is fixedly installed on the top of the round base plate (17).

8. A mold for preventing deformation of a rectangular cast product according to claim 7, characterized in that: A vibration spring (19) is fixedly installed between the dome plate (15) and the bottom plate (17). The top column (16) and the bottom column (18) are inserted inside the vibration spring (19). A vibration motor (20) is fixedly installed at the bottom of the mounting platform (1).

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