Wet sand casting sand core tool based on split type sand core through core bar combination

Abstract

The utility model relates to the technical field of green sand casting, in particular to a green sand casting sand core tool based on split type sand cores and combined through core bars. According to the technical scheme, the split type sand core assembling tool comprises a base plate and a positioning core bar, an assembling supporting mechanism is arranged above the base plate, the assembling supporting mechanism comprises a peripheral supporting assembly, a positioning assembling assembly and a limiting supporting assembly which are arranged on one side above the base plate, and a split type sand core is correspondingly assembled on the assembling supporting mechanism. According to the utility model, the integral structure is simple, different sand core topological structures can be matched through the mutual matching of the base plate, the assembly supporting mechanism and the positioning core bar, the integral universality is improved, meanwhile, the complexity of a single integral sand core can be reduced through the arrangement of the split type sand core, the success rate of mold drawing is improved, local replacement is convenient, and the production cost is reduced. And the cost investment is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of tide mold sand casting technology, and in particular to a tide mold sand casting sand core tooling based on a split sand core combined with a core skeleton. Background Technology

[0002] In the process of wet sand casting, the sand core is a key component in forming the internal shape of the casting. For castings with complex shapes and large dimensions, using a monolithic sand core presents significant challenges. The monolithic sand core is difficult to manufacture, and its dimensional and shape accuracy is difficult to guarantee after molding. Furthermore, the draft angle and barb positions of the monolithic sand core can easily lead to demolding difficulties. Production methods such as using inserts or secondary sand injection make the sand core prone to damage, and local defects in the monolithic sand core can lead to the scrapping of the entire core, significantly increasing production costs. Moreover, existing sand core tooling has poor versatility. Therefore, we propose a wet sand casting sand core tooling based on a split sand core combined with a core frame. Utility Model Content

[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a sand core tooling for tide casting based on a split sand core and a core-bond assembly.

[0004] The technical solution of this utility model is as follows: a sand core tooling for tide casting based on split sand cores and core assembly, including a base plate and positioning cores. An assembly support mechanism is provided above the base plate. The assembly support mechanism includes an outer support component, a positioning assembly component and a limiting support component provided on one side above the base plate. The split sand cores are correspondingly assembled on the assembly support mechanism.

[0005] Preferably, the peripheral support assembly includes four sets of mounting brackets disposed above the substrate, the four sets of mounting brackets being rectangularly arranged at the four edges of the substrate.

[0006] Preferably, the positioning assembly component includes multiple sets of assembly blocks, and each set of assembly blocks has multiple sets of positioning holes on one side of its upper surface.

[0007] Preferably, the limiting support assembly includes multiple sets of limiting struts disposed above the substrate.

[0008] Preferably, the split sand core is modularly configured and has a combination positioning function. When the split sand core is in the assembled state, its bottom is installed corresponding to the upper side of the assembly support mechanism.

[0009] Preferably, when the split sand core and the assembly support mechanism are in the assembled state, core bone holes are opened at the main oil passage positions on the split sand core, and the positioning core bone is installed corresponding to the core bone holes.

[0010] Compared with the prior art, the present invention has the following beneficial technical effects:

[0011] This utility model has a simple overall structure. The combination of the base plate, assembly support mechanism and positioning core can adapt to different sand core topologies, improving overall versatility. At the same time, the split sand core design reduces the complexity of individual integral sand cores, increases the success rate of demolding, and facilitates partial replacement, greatly reducing cost. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention when it is assembled with a split sand core.

[0013] Figure 2 This is a schematic diagram of the base plate and assembly support mechanism in this utility model;

[0014] Figure 3 This is an exploded view of the split-type sand core structure in this utility model.

[0015] Reference numerals: 1. Substrate; 2. Positioning core; 3. Assembly support mechanism; 31. Peripheral support assembly; 311. Assembly frame; 32. Positioning assembly assembly; 321. Assembly block; 322. Positioning hole; 33. Limiting support assembly; 331. Limiting strut; 4. Split sand core. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] Example

[0018] like Figure 1-3As shown, this utility model proposes a sand casting core tooling based on split sand cores and core assembly, including a base plate 1 and a positioning core 2. An assembly support mechanism 3 is provided above the base plate 1, and a split sand core 4 is correspondingly assembled on the assembly support mechanism 3. The split sand core 4 is a plurality of independent sub-sand cores formed by cutting the main valve sand core along the machinable surface of the oil passage. Each independent sub-sand core is designed with a draft angle to ensure that there is no interference between the independent sub-sand cores during demolding. The assembly support mechanism 3 includes an outer support component 31, a positioning assembly component 32 and a limiter, which are provided on one side above the base plate 1. The support assembly 33 and the peripheral support assembly 31 include four sets of assembly frames 311 disposed above the substrate 1. The four sets of assembly frames 311 are rectangularly arranged at the four edges of the substrate 1. The mounting ends of the assembly frames 311 are fixedly connected to the upper side of the substrate 1. The positioning assembly assembly 32 includes multiple sets of assembly blocks 321. The mounting ends of each set of assembly blocks 321 are fixedly connected to the substrate 1. The multiple sets of assembly blocks 321 are disposed between the four sets of assembly frames 311. Multiple sets of positioning holes 322 are opened on the upper side of each set of assembly blocks 321. The positioning holes 322 are provided to facilitate the operator's operation of the split sand core 4. For positioning and assembly, the limiting support assembly 33 includes multiple sets of limiting struts 331 disposed above the base plate 1. The mounting ends of the limiting struts 331 are fixedly connected to one side of the upper part of the base plate 1. The multiple sets of limiting struts 331 can support and position the split sand core 4, thereby making the split sand core 4 more stable when it is assembled with the assembly support mechanism 3. The split sand core 4 is modularly designed, which reduces the complexity of a single integral sand core and improves the success rate of demolding. The split sand core 4 has a combination positioning function and is easy to replace locally, greatly improving its performance. Cost input is reduced. When the split sand core 4 is in the assembled state, its bottom is installed corresponding to the upper side of the assembly support mechanism 3. When the split sand core 4 is in the assembled state, its bottom is installed corresponding to the positioning hole 322. When the split sand core 4 and the assembly support mechanism 3 are in the assembled state, core bone holes are opened at the main oil passage positions on the split sand core 4. The positioning core bone 2 is installed corresponding to the core bone hole. The outer periphery of the positioning core bone 2 fits against the inner wall of the core bone hole. The positioning core bone 2 is made of solid round steel. The setting of the positioning core bone 2 can position the split sand core 4 when it is assembled above the assembly support mechanism 3.

[0019] In this embodiment, firstly, based on the structure of the overall sand core, it is divided into independent sub-sand cores according to the processed surfaces, such as... Figure 3As shown, the main valve sand core of the 21-ton excavator is divided into 17 independent sub-sand cores. Each main oil passage sand core has a core hole. Then, the assembly support mechanism 3 is fixedly assembled on the base plate 1 as shown in the attached figure. Then, the cut sand cores are assembled one by one on the assembly support mechanism 3. Finally, the positioning core 2 is inserted into the core hole on the split sand core 4, thereby completing the assembly operation of the base plate 1, the positioning core 2, the assembly support mechanism 3 and the split sand core 4.

[0020] The above-described specific embodiments are merely preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above-described specific embodiments.

Claims

1. A sand core tooling for tide casting based on a split sand core and a core assembly, comprising a base plate (1) and a positioning core assembly (2), characterized in that: An assembly support mechanism (3) is provided above the substrate (1). The assembly support mechanism (3) includes an outer support component (31), a positioning assembly component (32), and a limiting support component (33) provided on one side above the substrate (1). A split sand core (4) is correspondingly assembled on the assembly support mechanism (3).

2. The sand core tooling for tide casting based on split sand cores and core assembly according to claim 1, characterized in that, The peripheral support assembly (31) includes four sets of mounting brackets (311) disposed above the substrate (1), and the four sets of mounting brackets (311) are respectively arranged in a rectangular shape at the four edges of the substrate (1).

3. The sand core tooling for tide casting based on split sand cores and core assembly according to claim 1, characterized in that, The positioning assembly component (32) includes multiple sets of assembly blocks (321), and each set of assembly blocks (321) has multiple sets of positioning holes (322) on one side above.

4. The sand core tooling for tide casting based on split sand cores and core assembly according to claim 1, characterized in that, The limiting support assembly (33) includes multiple sets of limiting struts (331) disposed above the substrate (1).

5. A sand core tooling for tide casting based on a split sand core and core assembly according to claim 1, characterized in that, The split sand core (4) is modularly configured and has a combination positioning function. When the split sand core (4) is in the assembled state, its bottom is installed corresponding to the upper side of the assembly support mechanism (3).

6. The sand core tooling for tide casting based on split sand cores and core assembly according to claim 1, characterized in that, When the split sand core (4) and the assembly support mechanism (3) are in the assembled state, core holes are opened at the main oil passage position on the split sand core (4), and the positioning core (2) is installed corresponding to the core holes.

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