A casting mold designed for a sand prevention process

Abstract

This utility model discloses a casting mold with anti-sand-fall-off process design, belonging to the field of casting molds. It includes a casting table, on which a lower template and an upper template are provided. The lower template is provided in two sets, and the two sets of lower templates are combined to form a mold cavity. The size of the mold cavity is adapted to the upper template. A plug-in plate is provided below the lower template, and the plug-in plate is provided on an adjustment seat. The adjustment seat is connected to a two-way screw. By designing the two sets of lower templates to be separable left and right, in the mold opening and part removal process, the two sets of lower templates can be separated horizontally, replacing the traditional integral template and the overall pulling and separation method of the casting and molding sand. During the separation process, the concentrated pulling force of the mold inner wall on the molding sand is dispersed into the lateral separation force of the two sets of templates, effectively avoiding the breakage of the molding sand and the mold cavity interface in stress concentration areas such as the corners of the casting, and reducing sand drop from the key stage of mold opening where sand falls off frequently.

Description

Technical Field

[0001] This utility model belongs to the field of casting mold technology, specifically relating to a casting mold with anti-sand-fall-off process design. Background Technology

[0002] In the casting production field, the surface quality and forming accuracy of castings largely depend on the performance of casting molds. Sand loss is one of the core pain points that has long plagued the casting industry. Sand loss not only causes defects such as sand holes, pits, and missing parts on the surface of castings, reducing the mechanical properties and appearance quality of castings, but also requires a lot of manpower and resources for subsequent cleaning, which greatly increases the production cycle and cost, and seriously restricts the improvement of casting production efficiency.

[0003] Currently, in casting production, the structural design of the upper and lower mold plates plays a certain role in preventing sand falling off. At present, the lower mold plate of traditional casting molds mostly adopts an integral structure. However, this type of design has certain defects in practical applications. That is, since the integral lower mold plate cannot be disassembled, in the mold opening and part removal process, the integral lower mold plate needs to be separated from the casting and molding sand as a whole. During the separation process, the inner wall of the cavity exerts a continuous and concentrated pulling force on the molding sand. Especially at the corners of the casting, the molding sand is very easy to fall off due to the concentrated force. Utility Model Content

[0004] The purpose of this utility model is to provide a casting mold with anti-sand-falling process design to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a casting mold designed to prevent sand falling, comprising a casting table, wherein the casting table is provided with a lower template and an upper template; The lower template is provided in two sets, and the two sets of lower templates are combined to form a model cavity, which is adapted to the size of the upper template; The lower template is provided with a plug-in plate and an adjustment seat. The plug-in plate is located on the adjustment seat. The adjustment seat is connected to a bidirectional lead screw. One side of the bidirectional lead screw is provided with a drive tooth. Below the drive tooth is an adjustment frame. Above the adjustment frame is a structural toothed rod. The structural toothed rod meshes with the drive tooth. The adjustment frame is connected to a screw rod. The end of the screw rod is connected to a control motor.

[0006] In a preferred embodiment, the top of the adjusting seat has a slot cavity, the plug plate is fitted into the slot cavity, and the plug plate is connected to the adjusting seat by bolts.

[0007] In a preferred embodiment, both sides of each set of lower templates are welded and fixed to the plug-in plate. Two sets of bidirectional lead screws and adjusting seats are symmetrically arranged on both sides of the lower templates, and each set of bidirectional lead screws is symmetrically threaded to the adjusting seat.

[0008] In a preferred embodiment, the screw is mounted on a U-shaped frame, the control motor is mounted on the side wall of the U-shaped frame, and the U-shaped frame is mounted on the side wall of the casting table.

[0009] In a preferred embodiment, the casting platform is provided with a guide groove cavity, and a guide post is provided in the guide groove cavity. The plug-in plates on both sides of the lower template extend into the guide groove cavity and are connected through the guide post.

[0010] In a preferred embodiment, one end of the guide post is provided with an outer diameter thread.

[0011] In a preferred embodiment, the casting platform is further provided with a discharge cavity, which is located between the two sets of lower templates. A conveyor belt is provided below the discharge cavity and is located in the through cavity of the casting platform.

[0012] In a preferred embodiment, a fixing frame is also installed on the casting platform. A drive cylinder and a guide cylinder are respectively provided on the fixing frame. The output end of the drive cylinder and the movable end of the guide cylinder are both connected to the upper template.

[0013] Compared with the prior art, the beneficial effects of this utility model are: The casting mold designed for this anti-sand-falling process features a two-set lower template that can be separated horizontally. During the mold opening and part removal process, the two sets of lower templates can separate horizontally, replacing the traditional method of pulling and separating the mold, casting, and molding sand as a whole. During the separation process, the concentrated pulling force of the mold inner wall on the molding sand is dispersed into the lateral separation force of the two sets of templates, effectively avoiding the breakage of the interface between the molding sand and the cavity in stress concentration areas such as the corners of the casting. This reduces sand particle shedding from the critical stage of mold opening, where sand falls frequently.

[0014] The casting mold designed for anti-sand-falling process uses a discharge cavity and a conveyor belt. When the mold opens, the two sets of lower mold plates separate horizontally, and the discharge cavity in the middle is fully exposed. The mold part falls directly from the discharge cavity to the conveyor belt below. With this design, the separation of the mold part from the mold can be completed without manual intervention, eliminating the need for manual part removal and transfer steps. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the lower template assembly installation structure of this utility model. Figure 3 This is a schematic diagram of the installation structure of the lower template and the adjustment seat of this utility model. Figure 4 This is a schematic diagram of the casting platform structure of this utility model.

[0016] In the diagram: 1. Casting table; 11. Guide groove cavity; 12. Discharge cavity; 13. Conveyor belt; 2. Lower template; 21. Insert plate; 22. Adjusting seat; 221. Slot cavity; 23. Upper template; 3. Two-way lead screw; 31. Drive gear; 32. Adjusting frame; 321. Structural gear; 33. Screw; 34. U-shaped frame; 35. Control motor; 36. Drive cylinder; 37. Guide cylinder; 4. Guide post; 41. Outer diameter thread. Detailed Implementation

[0017] The present invention will be further described below with reference to the embodiments.

[0018] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0019] Please see Figures 1-4 This utility model provides a casting mold designed for anti-sand-falling process, including a casting table 1, on which a lower template 2 and an upper template 23 are provided. A fixing frame is also installed on the casting table 1, on which a drive cylinder 36 and a guide cylinder 37 are respectively provided. The output end of the drive cylinder 36 and the movable end of the guide cylinder 37 are both connected to the upper template 23. There are two sets of lower templates 2, which are combined to form a mold cavity. The mold cavity is adapted to the size of the upper template 23. A plug-in plate 21 is provided below the lower template 2, and the plug-in plate 21 is provided on an adjusting seat 22. The adjusting seat 22 is connected to a bidirectional lead screw 3. A drive tooth 31 is constructed on one side of the bidirectional lead screw 3. An adjustment frame 32 is provided below the moving gear 31, and a structural gear 321 is provided above the adjustment frame 32. The structural gear 321 meshes with the driving gear 31. The adjustment frame 32 is connected to the screw 33. The screw 33 is connected to the output end of the control motor 35 on one side. The screw 33 is located on the U-shaped frame 34. The control motor 35 is located on the side wall of the U-shaped frame 34. The U-shaped frame 34 is located on the side wall of the casting table 1. Each set of lower template 2 has a plug plate 21 welded and fixed on both sides. Two sets of bidirectional screws 3 and adjustment seats 22 are symmetrically arranged on both sides of the lower template 2. Each set of bidirectional screws 3 is symmetrically threaded with an adjustment seat 22. The two sets of adjustment frames 32 are respectively connected to the screw 33.

[0020] In this embodiment, the two sets of lower templates 2 are designed to be separated from each other to the left and right. During the mold opening and part removal process, the two sets of lower templates 2 can be separated in the horizontal direction, replacing the traditional method of separating the integral template from the casting and molding sand by pulling. During the separation process, the concentrated pulling force of the mold inner wall on the molding sand is dispersed into the lateral separation force of the two sets of lower templates 2, effectively avoiding the breakage of the molding sand and the cavity interface in stress concentration areas such as the corners of the casting, and reducing sand drop from the key stage of mold opening where sand drop is common.

[0021] In traditional molds, if the lower template 2 is adjusted by only one-sided transmission, the lower template 2 is prone to tilting due to the imbalance of forces on both sides. A slight tilt may cause the upper template 23 to not fit tightly with the cavity, and the edge of the molding sand will loosen due to the lack of effective extrusion. In this application, each set of lower template 2 is rigidly connected to the adjusting seat 22 by bolts through the plug plate 21 on both sides. The two sets of bidirectional screw rods 3 and adjusting seats 22 are symmetrically distributed on both sides of the lower template 2. When the screw rod 33 rotates, it synchronously drives the two sets of adjusting frames 32. Then, the adjusting frames 32 mesh with the driving teeth 31 of the bidirectional screw rod 3 to drive the adjusting seats 22 on both sides to move synchronously. This ensures that the lower template 2 always maintains a horizontal posture during the movement, so that the model cavity of the two sets of lower template 2 will not be offset or deformed. This prevents uneven stress on the molding sand caused by cavity offset and reduces the probability of sand particles loosening and falling off.

[0022] Please see Figures 1-4 The top of the adjusting seat 22 is provided with a slot cavity 221. The plug plate 21 is fitted into the slot cavity 221 and the plug plate 21 is connected to the adjusting seat 22 by bolts. The casting table 1 is provided with a guide groove cavity 11. The guide groove cavity 11 is provided with a guide post 4. The plug plates 21 on both sides of the lower template 2 extend into the guide groove cavity 11 and are connected through the guide post 4. One end of the guide post 4 is provided with an outer diameter thread 41.

[0023] In this embodiment, the lower template 2 is easily disassembled by bolts connecting the plug plate 21 and the adjusting seat 22, and by the guide post 4 being spirally mounted on the casting table 1. When the lower template 2 needs to be cleaned, the simple disassembly method provides convenience and greatly simplifies subsequent maintenance work. At the same time, with the cooperation of the guide post 4, the lower template 2 can be guided in direction to further prevent deviation.

[0024] Please see Figure 4 The casting table 1 is also provided with a discharge cavity 12, which is located in the middle of the two sets of lower templates 2. Below the discharge cavity 12 is a conveyor belt 13, which is located in the through cavity of the casting table 1.

[0025] In this embodiment, through the set discharge cavity 12 and conveyor belt 13, when the mold is opened, the two sets of lower mold plates 2 separate in the horizontal direction, the middle discharge cavity 12 is fully exposed, and the mold part falls directly from the discharge cavity 12 to the conveyor belt 13 below. With this design, the separation of the mold part and the mold can be completed without manual intervention, saving the manual picking and transfer steps.

[0026] Working principle and usage process of this utility model: First, start the control motor 35, drive the screw 33 to drive the two sets of adjustment frames 32 to move synchronously. The gear 321 of the adjustment frame 32 meshes with the drive gear 31 at one end of the bidirectional screw 3, so that the adjustment seat 22 on the bidirectional screw 3 drives the lower template 2 to move. When the lower templates 2 on both sides are combined to form a model cavity, molding sand is poured into the model cavity. Next, the drive cylinder 36 on the fixed frame pushes the upper template 23 to descend vertically, and the guide cylinder 37 restricts the upper template 23 to move only in the vertical direction to prevent tilting. The upper template 23 fits tightly with the model cavity of the two sets of lower templates 2, and the molding sand is compacted under uniform pressure to avoid loosening or cracking. After compaction, the drive cylinder 36 drives the upper template 23 to rise vertically and reset, while controlling the motor 35 to drive the screw 33 in the opposite direction. Through the adjustment seat 22 and the bidirectional screw 3, the two sets of lower templates 2 are horizontally separated along the guide post 4 to disperse the tensile force on the molding sand and prevent the molding sand from falling off the corners of the casting. Finally, after the two sets of lower mold plates 2 separate, the middle discharge cavity 12 is exposed. The molded part falls from the discharge cavity 12 to the lower conveyor belt 13 under the action of gravity. The conveyor belt 13 automatically transports the part to the subsequent station without manual intervention, completing the entire casting production cycle.

[0027] 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 of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A casting mold designed to prevent sand falling during casting, comprising a casting table (1), characterized in that: The casting platform (1) is provided with a lower template (2) and an upper template (23); The lower template (2) is provided in two sets, and the two sets of lower templates (2) are combined to form a model cavity, which is adapted to the size of the upper template (23); The lower template (2) is provided with a plug plate (21) and an adjustment seat (22). The plug plate (21) is located on the adjustment seat (22). The adjustment seat (22) is connected to a two-way lead screw (3). The two-way lead screw (3) is provided with a drive tooth (31) on one side. The adjustment frame (32) is provided below the drive tooth (31). The structural toothed rod (321) is provided above the adjustment frame (32). The structural toothed rod (321) meshes with the drive tooth (31). The adjustment frame (32) is connected to a screw (33). The end of the screw (33) is connected to a control motor (35).

2. The casting mold designed for anti-sand-falling process according to claim 1, characterized in that: The top of the adjusting seat (22) is provided with a slot cavity (221), and the plug plate (21) is fitted into the slot cavity (221). The plug plate (21) and the adjusting seat (22) are connected by bolts.

3. The casting mold designed for anti-sand-falling process according to claim 1, characterized in that: The lower template (2) of each group is welded and fixed to the plug plate (21) on both sides. The bidirectional screw (3) and the adjusting seat (22) are symmetrically arranged in two groups on both sides of the lower template (2). The bidirectional screw (3) of each group is symmetrically threaded to the adjusting seat (22).

4. The casting mold designed for anti-sand-falling process according to claim 1, characterized in that: The screw (33) is mounted on the U-shaped frame (34), the control motor (35) is mounted on the side wall of the U-shaped frame (34), and the U-shaped frame (34) is mounted on the side wall of the casting table (1).

5. The casting mold designed for anti-sand-falling process according to claim 1, characterized in that: The casting table (1) is provided with a guide groove cavity (11), and a guide post (4) is provided in the guide groove cavity (11). The plug-in plates (21) on both sides of the lower template (2) extend into the guide groove cavity (11) and are connected through the guide post (4).

6. The casting mold designed for anti-sand-falling process according to claim 5, characterized in that: One end of the guide post (4) is provided with an outer diameter thread (41).

7. The casting mold designed for anti-sand-falling process according to claim 5, characterized in that: The casting platform (1) is also provided with a discharge cavity (12), which is located in the middle of the two sets of lower templates (2). A conveyor belt (13) is provided below the discharge cavity (12), and the conveyor belt (13) is located in the through cavity of the casting platform (1).

8. The casting mold designed for anti-sand-falling process according to claim 7, characterized in that: The casting table (1) is also equipped with a fixed frame, on which a driving cylinder (36) and a guide cylinder (37) are respectively provided. The output end of the driving cylinder (36) and the movable end of the guide cylinder (37) are both connected to the upper template (23).

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