Composite core cast steel bucket tooth mold

Abstract

The utility model relates to the technical field of casting molds, and discloses a composite core cast steel bucket tooth mold. The composite core cast steel bucket tooth mold comprises a bottom plate, a supporting frame is fixedly installed above the bottom plate, a connecting piston is installed in the supporting frame in a penetrating and inserting mode, a connecting plate is fixedly installed at the tail end of the connecting piston, a movable mold is fixedly installed on the rear side of the connecting plate, and a connecting block is fixedly installed above the supporting frame; an inner mold is fixedly installed below the connecting block, a limiting piston is installed on the right side of the bottom plate in a penetrating mode, a limiting column is fixedly connected with the limiting piston through a movable plate, and before casting, the position of the limiting column is adjusted through the limiting piston, so that the limiting column penetrates through the inner mold and is embedded into the movable mold; after fusion casting is completed, the limiting columns can form opening structures penetrating through the casting on the left side and the right side of the casting, in this way, the opening structures can be formed on the two sides of the casting during fusion casting, and follow-up drilling or stamping operation is omitted.

Description

Technical Field

[0001] The utility model relates to the technical field of casting molds, in particular to a composite core cast steel bucket tooth mold. Background Technique

[0002] An excavator is a commonly used construction machinery and mining machinery for excavation and loading operations. The cast steel bucket tooth is an important part of the excavator. Since the bucket tooth is prone to wear, the material is generally wear-resistant alloy and is separated from the bucket to save costs. The main production processes of the existing cast steel bucket teeth are sand casting and investment casting.

[0003] The existing Chinese utility model patent with the reference publication number of CN202934097U discloses a die-casting mold for cast steel bucket teeth, including an upper mold and a lower mold. The bottom surface of the upper mold is provided with an upper mold cavity, and the top surface of the lower mold is provided with a lower mold cavity. After the upper mold and the lower mold are clamped, the upper mold cavity and the lower mold cavity together form a complete mold cavity. The feature is that the rear end of the mold cavity is open, and a sand core is fitted at the open end. A stop block is pushed against the rear end of the sand core. The part of the mold cavity located at the front end of the sand core forms the bucket tooth cavity of the mold. A runner cavity penetrating the top surface and the bottom surface of the lower mold is also provided on the lower mold. The top of the runner cavity is provided with an inner runner communicating with the bucket tooth cavity. A punch is assembled at the bottom of the runner cavity, and a punch sand core is placed on the top of the punch. It has no slider and core pulling mechanism. Using the die-casting mold of the utility model, the molten steel fills the mold completely, and there are no cracks and porosity defects in the casting. There is no problem of molten steel welding with the punch, and there is no phenomenon of separation between the runner cavity and the cavity. Therefore, it is particularly suitable for the production of excavator bucket teeth.

[0004] Hole structures are arranged on both the left and right sides of the bucket tooth. Generally, it is connected to the base on the bucket through a pin. The existing bucket tooth molds need to drill or punch holes on both the left and right sides of the bucket tooth after the post-casting of the bucket tooth, which is very inconvenient. And after the existing bucket tooth molds complete the casting, the bucket tooth may adhere to the mold, and the demolding is very inconvenient. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a composite core cast steel bucket tooth mold, which has the advantages of reserving the hole structures on both sides during casting to reduce subsequent operations and being convenient for demolding, etc., and solves the above technical problems.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present utility model provides the following technical solutions: A composite core cast steel bucket tooth mold, comprising: a bottom plate, a support frame is fixedly installed above the bottom plate, a connecting piston is inserted and installed inside the support frame, a connecting plate is fixedly installed at the end of the connecting piston, a moving mold is fixedly installed at the rear side of the connecting plate, a connecting block is fixedly installed above the support frame, an inner mold is fixedly installed below the connecting block, a limiting piston is inserted and installed on the right side of the bottom plate, a movable plate is fixedly installed at the left end of the limiting piston, a connecting column is fixedly installed on the right side of the movable plate, and a limiting column is fixedly installed on the left side of the movable plate; the bottom plate can support the support frame.

[0009] As a preferred technical solution of the present utility model, the support frame is symmetrically installed before and after with the center of the bottom plate as the reference above the bottom plate, the connecting pistons are symmetrically installed mirror-image before and after inside the support frames on the front and rear sides of the bottom plate, and a fixed connection is formed between the connecting pistons and the support frames; the support frame can limit the position of the connecting piston, and the connecting piston can drive the connecting plate to move.

[0010] As a preferred technical solution of the present utility model, the moving mold is symmetrically installed mirror-image left and right at the movable ends of the connecting pistons on the front and rear sides through the connecting plate, and a movable connection is formed between the moving mold and the bottom plate through the connecting piston; the moving mold can limit the shape of the casting.

[0011] As a preferred technical solution of the present utility model, the connecting blocks are symmetrically installed mirror-image before and after with the center of the bottom plate as the reference at the upper ends of the connecting plates on the front and rear sides of the bottom plate, and the top surface of the inner mold is fixedly connected to the bottom surfaces of the connecting blocks on the front and rear sides respectively; the connecting blocks can facilitate the limitation of the position of the inner mold.

[0012] As a preferred technical solution of the present utility model, an opening structure for fitting with the limiting column is provided at the center of the inner mold, the top ends of the inner mold and the moving mold are fitted, and a concave structure for fitting with the limiting column is provided on the left and right sides of the moving mold; the inner mold can reserve a space for inserting and installing with the base inside the casting.

[0013] As a preferred technical solution of the present utility model, a fixed connection is formed between the limiting piston and the bottom plate, a movable connection is formed between the movable plate and the bottom plate through the limiting piston, and the connecting columns are symmetrically installed before and after with the center of the movable plate as the reference at the rear side of the movable plate; the movable plate can facilitate the formation of a fixed connection between the limiting column and the limiting piston.

[0014] As a preferred technical solution of the present utility model, the connecting column penetrates the bottom plate from right to left, and a sliding connection is formed between the connecting column and the bottom plate, and a fixed connection is formed between the limiting column and the limiting piston through the movable plate; the limiting column can reserve an opening structure on the left and right sides of the casting and limit the position of the casting after melting and casting.

[0015] Compared with the prior art, the utility model provides a composite core cast steel bucket tooth mold, which has the following beneficial effects:

[0016] 1. Through the setting of the limit posts in the utility model, the limit posts are fixedly connected between the movable plate and the limit piston. The connecting columns are symmetrically installed on the rear side of the movable plate with the center of the movable plate as the reference. The connecting columns penetrate the bottom plate from right to left, and a sliding connection is formed between the connecting columns and the bottom plate. The connecting columns can limit the movement direction of the movable plate. Before casting, the position of the limit posts is adjusted by the limit piston, so that the limit posts penetrate the inner mold and fit with the moving mold. After casting, the limit posts can form a through-hole structure penetrating the casting on both the left and right sides of the casting. This method can form a through-hole structure on both sides of the casting during casting, eliminating the subsequent drilling or stamping operations.

[0017] 2. Through the setting of the inner mold in the utility model, the inner mold is fixedly connected to the support frame through the connecting block. After casting, the casting will form a connection state between the limit posts and the inner mold. Since the moving mold is symmetrically installed on the movable ends of the front and rear connecting pistons through the connecting plate in a left-right mirror image manner, and the moving mold is movably connected to the bottom plate through the connecting piston. By adjusting the position of the moving mold through the connecting piston, the distance between the moving mold and the inner mold is increased. Since the position of the casting is fixed, the casting will fall off from the inside of the moving mold when the moving mold moves. Then, the position of the limit posts is adjusted by the limit piston, so that the limit posts slide out of the inside of the moving mold. Since the casting wraps the inner mold, the casting can be directly knocked off from the outside of the inner mold by knocking, so as to remove the casting after casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 is a schematic diagram of the connection structure between the bottom plate and the moving mold of the utility model;

[0020] Figure 3 is a schematic diagram of the connection structure between the bottom plate and the inner mold of the utility model;

[0021] Figure 4 is a schematic diagram of the connection structure between the bottom plate and the limit posts of the utility model;

[0022] Among them: 1. Bottom plate; 11. Support frame; 12. Connecting piston; 13. Connecting plate; 14. Moving mold; 15. Connecting block; 16. Inner mold; 17. Limit piston; 18. Movable plate; 19. Connecting column; 110. Limit post. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes the embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0024] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Please refer to Figure 1 - Figure 4 , in this embodiment, a composite core cast steel bucket tooth mold includes: a bottom plate 1, a support frame 11 is fixedly installed above the bottom plate 1, a connecting piston 12 is inserted and installed inside the support frame 11, a connecting plate 13 is fixedly installed at the end of the connecting piston 12, a moving mold 14 is fixedly installed at the rear side of the connecting plate 13, a connecting block 15 is fixedly installed above the support frame 11, an inner mold 16 is fixedly installed below the connecting block 15, a limiting piston 17 is inserted and installed on the right side of the bottom plate 1, a movable plate 18 is fixedly installed at the left end of the limiting piston 17, a connecting column 19 is fixedly installed on the right side of the movable plate 18, and a limiting column 110 is fixedly installed on the left side of the movable plate 18.

[0027] The support frame 11 is symmetrically installed above the bottom plate 1 before and after with the center of the bottom plate 1 as the reference, the connecting pistons 12 are symmetrically installed inside the support frames 11 on the front and rear sides of the bottom plate 1 in a front-back mirror image manner, and a fixed connection is formed between the connecting pistons 12 and the support frames 11.

[0028] The moving mold 14 is symmetrically installed at the movable ends of the connecting pistons 12 on the front and rear sides in a left-right mirror image manner through the connecting plate 13, and a movable connection is formed between the moving mold 14 and the bottom plate 1 through the connecting piston 12.

[0029] The connecting blocks 15 are symmetrically installed on the upper ends of the front and rear connecting plates 13 on both sides of the bottom plate 1 in a front-back mirror symmetry with the center of the bottom plate 1 as the reference, and the top surfaces of the inner molds 16 are fixedly connected to the bottom surfaces of the front and rear connecting blocks 15 respectively.

[0030] An opening structure for fitting with the limit posts 110 is provided at the center of the inner mold 16. The inner mold 16 is fitted with the top end of the moving mold 14, and recessed structures for fitting with the limit posts 110 are provided on the left and right sides of the moving mold 14.

[0031] The limit piston 17 is fixedly connected to the bottom plate 1, and the movable plate 18 is movably connected to the bottom plate 1 through the limit piston 17. The connecting columns 19 are symmetrically installed on the rear side of the movable plate 18 with the center of the movable plate 18 as the reference.

[0032] The connecting columns 19 penetrate the bottom plate 1 from right to left, and the connecting columns 19 are slidably connected to the bottom plate 1. The limit posts 110 are fixedly connected to the movable plate 18 through the limit piston 17.

[0033] Specifically, the bottom plate 1 can support the support frame 11, the support frame 11 can limit the position of the connecting piston 12, the connecting piston 12 can drive the connecting plate 13 to move, the connecting plate 13 can facilitate the fixed connection between the moving mold 14 and the connecting piston 12, the moving mold 14 can limit the shape of the casting, the connecting block 15 can facilitate the limitation of the position of the inner mold 16, the inner mold 16 can reserve a space for inserting and installing the base in the casting, the limit piston 17 can drive the movable plate 18 to move, the movable plate 18 can facilitate the fixed connection between the limit post 110 and the limit piston 17, the connecting column 19 can limit the moving direction of the movable plate 18, and the limit post 110 can reserve an opening structure on the left and right sides of the casting and limit the position of the casting after casting.

[0034] In use, the limit post 110 is fixedly connected to the limit piston 17 through the movable plate 18. The connecting posts 19 are symmetrically installed on the rear side of the movable plate 18 with the center of the movable plate 18 as the reference. The connecting posts 19 penetrate through the bottom plate 1 from right to left, and a sliding connection is formed between the connecting posts 19 and the bottom plate 1. The connecting posts 19 can limit the movement direction of the movable plate 18. Before casting, the position of the limit post 110 is adjusted through the limit piston 17 so that the limit post 110 penetrates through the inner mold 16 and fits with the moving mold 14. After casting, the limit post 110 can form an opening structure that penetrates the casting on both the left and right sides of the casting. This method can form an opening structure on both sides of the casting during casting, eliminating subsequent drilling or stamping operations. The inner mold 16 is fixedly connected to the support frame 11 through the connecting block 15. After casting, the casting will form a connection state with the inner mold 16 through the limit post 110. Since the moving mold 14 is symmetrically installed on the movable ends of the connecting pistons 12 on the front and rear sides in a left-right mirror image through the connecting plate 13, a movable connection is formed between the moving mold 14 and the bottom plate 1 through the connecting pistons 12. The position of the moving mold 14 is adjusted through the connecting pistons 12 to increase the distance between the moving mold 14 and the inner mold 16. Since the position of the casting is fixed, when the moving mold 14 moves, the casting will fall off from the inside of the moving mold 14. Then, the position of the limit post 110 is adjusted through the limit piston 17 so that the limit post 110 slides out from the inside of the moving mold 14. Since the casting wraps the inner mold 16, the casting can be directly knocked off from the outside of the inner mold 16 by knocking, so as to remove the casting after casting is completed.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite core cast steel bucket tooth mold, characterized in that: include: A base plate (1), a support frame (11) is fixedly installed above the base plate (1), a connecting piston (12) is inserted and installed inside the support frame (11), a connecting plate (13) is fixedly installed at the end of the connecting piston (12), a movable mold (14) is fixedly installed on the rear side of the connecting plate (13), a connecting block (15) is fixedly installed above the support frame (11), an inner mold (16) is fixedly installed below the connecting block (15), a limiting piston (17) is inserted and installed on the right side of the base plate (1), a movable plate (18) is fixedly installed on the left end of the limiting piston (17), a connecting column (19) is fixedly installed on the right side of the movable plate (18), and a limiting column (110) is fixedly installed on the left side of the movable plate (18).

2. The composite core cast steel bucket tooth mold according to claim 1, characterized in that: The support frame (11) is installed above the base plate (1) in a front-to-back symmetrical manner with the center of the base plate (1) as a reference, and the connecting piston (12) is installed in a front-to-back mirror-symmetrical manner inside the support frame (11) on both sides of the base plate (1), and a fixed connection is formed between the connecting piston (12) and the support frame (11).

3. The composite core cast steel bucket tooth mold according to claim 1, characterized in that: The movable mold (14) is installed on the movable ends of the pistons (12) on both sides in a mirror-image manner through the connecting plates (13). The movable mold (14) is movably connected to the bottom plate (1) by connecting the pistons (12).

4. The composite core cast steel bucket tooth mold according to claim 1, characterized in that: The connecting block (15) is installed on the upper ends of the connecting plates (13) on the front and rear sides of the bottom plate (1) in a mirror-image manner with the center of the bottom plate (1) as a reference, and the top surface of the inner mold (16) is fixedly connected to the bottom surfaces of the connecting blocks (15) on the front and rear sides respectively.

5. The composite core cast steel bucket tooth mold according to claim 1, characterized in that: An opening structure engaged with a limiting column (110) is provided at the center of the inner mold (16), the inner mold (16) is engaged with the top end of the movable mold (14), and recessed structures engaged with the limiting column (110) are provided on the left and right sides of the movable mold (14).

6. The composite core cast steel bucket tooth mold according to claim 1, characterized in that: The limiting piston (17) and the bottom plate (1) are fixedly connected, the movable plate (18) is movably connected to the bottom plate (1) via the limiting piston (17), and the connecting column (19) is symmetrically installed on the rear side of the movable plate (18) with the center of the movable plate (18) as a reference.

7. The composite core cast steel bucket tooth mold according to claim 1, characterized in that: The connecting column (19) penetrates the bottom plate (1) from right to left, and a sliding connection is formed between the connecting column (19) and the bottom plate (1), and the limiting column (110) is fixedly connected to the limiting piston (17) via the movable plate (18).

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