A sand core casting molding device

Abstract

A sand core casting molding device includes a mold body, a hole in the mold body, a connecting mechanism connected to the mold body, a sand-shooting mechanism and an air-blowing mechanism detachably connected to the connecting mechanism, and an air-discharging mechanism connected to the mold. The sand-shooting mechanism and the air-blowing mechanism are respectively connected to the interior of the hole. The mold is connected to the discharge mechanism. The connecting mechanism includes a fixed base connected to the mold, a first connecting hole in the fixed base, and a through hole in the fixed base communicating with the hole. A second connecting hole is provided on the mold, and the first connecting hole communicates with the second connecting hole. The sand core casting molding device provided by this utility model can avoid the generation of core ends and facilitate the air-blowing and solidification of sand cores, thereby improving the production efficiency of sand cores and enhancing their practicality.

Description

Technical Field

[0001] This utility model belongs to the field of sand core forming technology, specifically relating to a sand core casting forming device. Background Technology

[0002] Sand cores are materials used to manufacture mold cores in casting production. They are composed of casting sand, molding sand binder, and other materials. The materials used to manufacture mold cores in casting production are generally made by mixing casting sand, molding sand binder, and additives in a certain proportion. The working principle of sand injection molding is to inject the mixture, including casting sand, into the cavity of the coated sand mold through the sand injection nozzle assembly of the sand injection equipment. After the sand core is preheated and hardened to a certain thickness in the mold cavity, it is removed to form a high-quality sand core product with a smooth surface and accurate dimensions.

[0003] Existing sand injection nozzles are typically located on the outside of the mold, with holes on the mold matching the nozzle's position. After sand injection, a portion of the sand core, known as the core head, remains in the hole. When subsequent air-blowing curing of the sand core is required, air is usually blown into the mold through this hole. Due to the presence of the core head, the airflow must pass through it to reach the subsequent sand core portion, increasing the blowing distance and affecting sand core production efficiency. Removing the core head by grinding to avoid this situation also takes time, further impacting production efficiency. Therefore, a device to improve sand core production efficiency is needed, and this invention addresses this technical problem. Utility Model Content

[0004] This invention provides a sand core casting molding device that can avoid the formation of core ends and facilitate the air blowing and solidification of sand cores, thereby improving the production efficiency and practicality of sand cores.

[0005] A sand core casting molding device includes a mold body, a hole formed on the mold body, a connecting mechanism connected to the mold body, a sand-shooting mechanism and an air-blowing mechanism detachably connected to the connecting mechanism, and an air-discharging mechanism connected to the mold. The sand-shooting mechanism and the air-blowing mechanism are respectively connected to the interior of the hole, and the mold is connected to the discharge mechanism.

[0006] Furthermore, the connecting mechanism includes a fixed base connected to the mold, a first connecting hole opened on the fixed base, and a through hole opened on the fixed base. The through hole communicates with the hole. The mold has a second connecting hole, and the first connecting hole communicates with the second connecting hole.

[0007] Furthermore, the sand-shooting mechanism includes a sand-shooting nozzle inserted into the hole and the through hole, a connecting hole three opened on the sand-shooting nozzle, and a bolt connected to the connecting hole three, wherein the bolt is connected to the connecting hole one and the connecting hole two.

[0008] Furthermore, the blowing mechanism includes a blowing nozzle inserted into the hole and the through hole, a fourth connecting hole on the blowing nozzle, a first exhaust plug connected to the blowing nozzle, and a bolt connected to the fourth connecting hole, wherein the bolt is connected to the first connecting hole and the second connecting hole.

[0009] Furthermore, a sealing nozzle is fitted onto the outer side of the air nozzle, and the outer side of the sealing nozzle fits into the through hole.

[0010] Furthermore, the venting mechanism includes a venting groove formed in the mold and a second venting plug connected in the venting groove.

[0011] Furthermore, the mold includes an upper mold connected to the connecting mechanism, a plurality of baffles connected to the upper mold, and a lower mold connected to the plurality of baffles. The upper mold and the lower mold are respectively connected with sealing strips. A connecting groove is provided on the baffle, and the sealing strip is connected in the connecting groove.

[0012] Furthermore, the discharge mechanism includes a through groove formed in the lower mold and a push rod connected in the through groove.

[0013] The technical effects of this utility model are as follows:

[0014] (1) The sand-shooting mechanism and the air-blowing mechanism in this scheme are respectively inserted into the hole of the mold to avoid the core part remaining in the hole, so that the core part does not need to be polished. Moreover, due to the reduction of the air-blowing distance, the efficiency of air-blowing curing is also improved, thereby improving the production efficiency of sand core. Furthermore, the sand-shooting mechanism and the air-blowing mechanism are detachably connected to the connecting mechanism. During the operation, the sand-shooting mechanism and the air-blowing mechanism can be effectively fixed and the two can be easily disassembled, thus improving practicality.

[0015] (2) The sealing nozzle in this solution is sleeved on the outside of the air blowing nozzle and located between the air blowing nozzle and the fixed seat. This helps to prevent gas leakage during the blowing process, thereby avoiding affecting the curing effect.

[0016] (3) The mold in this scheme is provided with an exhaust groove, and an exhaust plug is connected in the exhaust groove, so that the gas blown into the mold by the air nozzle can be discharged from the exhaust mechanism. The exhaust plug can also block casting sand and other objects while the gas is discharged, which further improves the practicality. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the sand-jetting nozzle in this utility model.

[0019] The attached diagrams are as follows: 1. Upper mold; 2. Fixed base; 3. Sealing nozzle; 4. Air blowing nozzle; 5. Exhaust plug one; 6. Connecting hole four; 7. Connecting hole one; 8. Connecting hole two; 9. Sealing strip; 10. Baffle; 11. Exhaust plug two; 12. Exhaust groove; 13. Push rod; 14. Lower mold; 15. Sand injection nozzle; 16. Connecting hole three. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described in conjunction with specific embodiments and accompanying drawings.

[0021] See Figure 1 , Figure 2 A sand core casting molding device includes a mold body, a hole opened on the mold body, a connecting mechanism connected to the mold body, a sand shooting mechanism and an air blowing mechanism detachably connected to the connecting mechanism, and an air outlet mechanism connected to the mold. The sand shooting mechanism and the air blowing mechanism are respectively connected to the interior of the hole, and the mold is connected to the discharge mechanism.

[0022] Furthermore, the connecting mechanism includes a fixed base 2 connected to the mold, a connecting hole 7 opened on the fixed base 2, and a through hole opened on the fixed base 2. The through hole communicates with the hole, and a connecting hole 8 is opened on the mold. The connecting hole 7 communicates with the connecting hole 8.

[0023] Furthermore, the sand-shooting mechanism includes a sand-shooting nozzle 15 inserted into the hole and through hole, a connecting hole 3 16 opened on the sand-shooting nozzle 15, and a bolt connected in the connecting hole 3 16. The bolt is connected to the connecting hole 1 7 and the connecting hole 2 8.

[0024] Furthermore, the air blowing mechanism includes an air nozzle 4 inserted into the hole and through hole, a connecting hole 4 6 formed on the air nozzle 4, an exhaust plug 5 connected to the air nozzle 4, and a bolt connected to the connecting hole 4 6. The bolt is connected to the connecting hole 7 and the connecting hole 8. The shapes and dimensions of the connecting holes 7 to 6 in the attached figure are for illustrative purposes only. In actual applications, different shapes and sizes can be manufactured to meet production needs.

[0025] Furthermore, a sealing nozzle 3 is fitted onto the outer side of the air nozzle 4, and the outer side of the sealing nozzle 3 fits into the through hole.

[0026] Furthermore, the venting mechanism includes a venting groove 12 formed in the mold and a second venting plug 11 connected in the venting groove 12.

[0027] Furthermore, the mold includes an upper mold 1 connected to the connecting mechanism, a plurality of baffles 10 connected to the upper mold 1, and a lower mold 14 connected to the plurality of baffles 10. Sealing strips 9 are connected to the upper mold 1 and the lower mold 14 respectively. Connecting grooves are provided on the baffles 10, and the sealing strips 9 are connected within the connecting grooves. In this embodiment, the upper mold 1, baffles 10, and lower mold 14 are detachably connected. After production is completed, the baffles 10 can be separated from the upper mold 1 and the lower mold 14. The baffles 10 can be connected to telescopic rods or other telescopic devices to achieve the aforementioned effects. The upper mold 1 can also be used in the aforementioned manner to achieve a lifting function, facilitating subsequent material discharge. This is common knowledge in the art and will not be elaborated further here.

[0028] Furthermore, the material discharge mechanism includes a through groove formed in the lower mold 14 and a push rod 13 connected in the through groove.

[0029] The working process of this utility model is as follows:

[0030] First, move the upper mold 1 to a suitable height, and then move the baffle 10 to the position where the upper mold 1 and the lower mold 14 are located, so that the sealing strip 9 on the upper mold 1 and the lower mold 14 are embedded in the connecting groove of the baffle 10. At this time, the baffle 10 will fit with the upper mold 1 and the lower mold 14, and the mold installation is completed.

[0031] Then, the sand injection nozzle 15 is inserted into the hole of the upper mold 1, and the sand injection nozzle 15, the fixing seat 2 and the upper mold 1 are connected together by bolts to effectively fix the sand injection nozzle 15. Then, sand injection is performed into the mold through the sand injection nozzle 15. After the sand injection is completed, the sand injection nozzle 15 is removed, and the air blowing nozzle 4 is inserted into the hole in the same way. The air blowing nozzle 4, the fixing seat 2 and the upper mold 1 are connected together by bolts. Air is blown into the sand core in the mold through the air blowing nozzle 4 to perform air blowing curing.

[0032] During the blowing process, the gas passes through the vent plug 11 after passing through the sand core and is discharged from the vent groove 12. After the blowing curing is completed, the blowing nozzle 4 is removed, the baffle 10 is separated, the upper mold 1 is raised, and the push rod 13 located in the lower mold 14 will push the sand core from the lower mold 14, making it easier for the staff to remove the sand core.

[0033] The technical features not described in detail in this solution are based on the conventional operation and general understanding of those skilled in the art and are derived from existing technologies, and will not be elaborated further here.

[0034] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A sand core casting molding device, characterized in that, It includes a mold body, holes formed on the mold body, a connecting mechanism connected to the mold body, a sand-shooting mechanism and an air-blowing mechanism detachably connected to the connecting mechanism, and an air-discharging mechanism connected to the mold. The sand-shooting mechanism and the air-blowing mechanism are respectively connected to the interior of the holes, and the mold is connected to the discharge mechanism.

2. The sand core casting molding device according to claim 1, characterized in that, The connecting mechanism includes a fixed base (2) connected to the mold, a first connecting hole (7) opened on the fixed base (2), and a through hole opened on the fixed base (2). The through hole communicates with the hole. The mold has a second connecting hole (8). The first connecting hole (7) communicates with the second connecting hole (8).

3. The sand core casting molding apparatus according to claim 2, characterized in that, The sand-shooting mechanism includes a sand-shooting nozzle (15) inserted into the hole and the through hole, a connecting hole three (16) opened on the sand-shooting nozzle (15), and a bolt connected in the connecting hole three (16). The bolt is connected to the connecting hole one (7) and the connecting hole two (8).

4. The sand core casting molding apparatus according to claim 2, characterized in that, The blowing mechanism includes a blowing nozzle (4) inserted into the hole and the through hole, a fourth connecting hole (6) opened on the blowing nozzle (4), an exhaust plug (5) connected to the blowing nozzle (4), and a bolt connected to the fourth connecting hole (6). The bolt is connected to the first connecting hole (7) and the second connecting hole (8).

5. The sand core casting molding apparatus according to claim 4, characterized in that, The outer side of the blowing nozzle (4) is fitted with a sealing nozzle (3), and the outer side of the sealing nozzle (3) fits into the through hole.

6. The sand core casting forming apparatus according to claim 1, characterized in that, The exhaust mechanism includes an exhaust groove (12) opened in the mold and an exhaust plug (11) connected in the exhaust groove (12).

7. The sand core casting molding apparatus according to claim 1, characterized in that, The mold includes an upper mold (1) connected to the connecting mechanism, a plurality of baffles (10) connected to the upper mold (1), and a lower mold (14) connected to the plurality of baffles (10). The upper mold (1) and the lower mold (14) are respectively connected with sealing strips (9). A connecting groove is provided on the baffle (10), and the sealing strip (9) is connected in the connecting groove.

8. The sand core casting forming apparatus according to claim 7, characterized in that, The discharge mechanism includes a through groove opened in the lower mold (14) and a push rod (13) connected in the through groove.

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