Combined casting sand box

Abstract

The utility model discloses a combined casting sand box, belonging to the technical field of casting equipment. The combined casting sand box comprises a lower sand box, an upper sand box combined and docked with the lower sand box, and casting gates which are arranged on the side walls of the lower sand box and the upper sand box and correspond to each other. A first cooling water pipe is installed on the inner side of the lower sand box, and both ends of the first cooling water pipe extend to the outer side of the lower sand box. A water inlet is arranged at one end of the first cooling water pipe, and the end of the first cooling water pipe away from the water inlet is bent upward. The first cooling water pipe and the second cooling water pipe are both arranged in a continuous S-shaped structure, so that the contact area with the casting sand can be effectively increased, thereby improving the cooling effect of the casting sand, thereby effectively preventing the casting sand from expanding rapidly due to high temperature during the casting process, reducing the deformation of the casting, and thus improving the casting accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of casting equipment, and more specifically to a combined casting sand box. Background Art

[0002] The sand box is an indispensable equipment in the casting process. The existing sand boxes mostly adopt a two-box structure. First, put the mold in the lower layer, then fix the upper layer on the lower layer, then pour the molding sand into the upper layer, compact it, then punch holes on the molding sand surface to pour into the mold, and finally complete the casting and sand removal. In the above process, external force is required to compact the surface of the sand layer, which is time-consuming and labor-intensive, so a new technology is needed to solve this problem.

[0003] The existing patent is a sand box for casting. The patent authorization number is CN211614232U. It has a simple structure and a reasonable design. By adding a tamping layer on the basis of the original design, and utilizing the tamping blocks and hydraulic device on the tamping layer, the machine automatically tamps the sand layer, eliminating the additional process of tamping the sand layer and saving working time.

[0004] However, in patent authorization number CN211614232U, the molding sand is first poured into the upper sand box, and then the machine is started, the upper compaction layer starts to work, the motor powers the hydraulic device, and the hydraulic device reciprocates in the vertical direction, driving the compaction blocks under the compaction layer to compact the sand layer, thereby completing the compaction of the sand layer. However, during the pouring process, the casting sand will expand to a certain extent due to the high temperature, resulting in deformation of the casting and low precision. Therefore, we propose a combined casting sand box to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a combined casting sand box, which can effectively increase the contact area with the casting sand through the first cooling water pipe and the second cooling water pipe being arranged in a continuous S-shaped structure, thereby improving the cooling effect of the casting sand, thereby effectively preventing the casting sand from expanding rapidly due to high temperature during the casting process, reducing the deformation of the casting, and thus improving the casting accuracy.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A combined casting sand box, comprising a lower sand box, an upper sand box combined and docked with the lower sand box, and casting gates opened on the side walls of the lower sand box and the upper sand box and corresponding to each other, a first cooling water pipe is installed on the inner side of the lower sand box, and both ends of the first cooling water pipe extend to the outer side of the lower sand box, one end of the first cooling water pipe is provided with a water inlet, and the end of the first cooling water pipe away from the water inlet is bent upward;

[0010] A second cooling water pipe is fixedly connected to the inner side of the upper flask, and both ends of the second cooling water pipe extend to the outer side of the upper flask, one end of the second cooling water pipe is provided with a water outlet, and one end of the second cooling water pipe away from the water outlet is bent downward;

[0011] A corrugated hose is installed between the bent ends of the first cooling water pipe and the second cooling water pipe, and connectors connected to the bent ends of the first cooling water pipe and the second cooling water pipe are installed at both ends of the corrugated hose respectively, a sealing rubber ring is embedded on the inner side of the connector, and the sealing rubber ring is respectively in contact with the outer walls of the bent ends of the first cooling water pipe and the second cooling water pipe.

[0012] Furthermore, both side outer walls of the lower sand box and the upper sand box close to the casting gate are fixedly connected with fixing plates, and the end portions of the fixing plates are provided with notches.

[0013] Furthermore, a clamping bolt is installed on the inner side of the notch groove, and the bottom end of the clamping bolt abuts against the lower surface of the fixing plate at the lower sand box.

[0014] Furthermore, a butterfly nut is threaded onto the top end of the clamping bolt, and the bottom end of the butterfly nut abuts against the upper surface of the fixing plate at the upper sand box.

[0015] Furthermore, a boss is integrally formed at the top opening of the lower sand box, and a positioning boss is symmetrically fixedly connected to the upper surface of the boss.

[0016] Furthermore, a boss is integrally formed at the bottom of the upper sand box, and a positioning hole connected to the positioning boss is provided on the surface of the boss.

[0017] Furthermore, the outer diameter of the positioning boss is matched with the inner diameter of the positioning hole.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] (1) In this scheme, during the casting process through the casting gate, cold water is transported through the water inlet of the first cooling water pipe by an external water pump, and the cold water is transported to the second cooling water pipe through a corrugated hose. The first cooling water pipe and the second cooling water pipe are both arranged in a continuous S-shaped structure, so that the contact area with the casting sand can be effectively increased, thereby improving the cooling effect of the casting sand, thereby effectively preventing the casting sand from expanding rapidly due to high temperature during the casting process, reducing the deformation of the casting, and thus improving the casting accuracy.

[0021] (2) In this solution, when the lower sand box and the upper sand box are connected, the positioning protrusions are plugged into the positioning holes, thereby improving the accuracy of the connection and combination of the lower sand box and the upper sand box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the inner structure of the lower sand box of the utility model;

[0024] Figure 3 This is a schematic diagram of the upper sand box structure of the utility model;

[0025] Figure 4 This is a front view schematic diagram of the corrugated hose of the utility model;

[0026] Figure 5 It is a schematic cross-sectional view of the AA portion of the corrugated hose of the present invention.

[0027] Description of the numbers in the figure:

[0028] 1. Lower sand box; 2. Upper sand box; 3. Casting gate; 4. First cooling water pipe; 5. Water inlet; 6. Second cooling water pipe; 7. Water outlet; 8. Corrugated hose; 9. Connector; 10. Sealing rubber ring; 11. Fixing plate; 12. Clamping bolt; 13. Butterfly nut; 14. Positioning boss; 15. Positioning hole. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0030] Example:

[0031] See also Figure 1-5A combined casting sand box comprises a lower sand box 1, an upper sand box 2 combined and docked with the lower sand box 1, and casting gates 3 opened on the side walls of the lower sand box 1 and the upper sand box 2 and corresponding to each other, a first cooling water pipe 4 is installed on the inner side of the lower sand box 1, and both ends of the first cooling water pipe 4 extend to the outer side of the lower sand box 1, a water inlet 5 is arranged at one end of the first cooling water pipe 4, and the end of the first cooling water pipe 4 away from the water inlet 5 is bent upward;

[0032] A second cooling water pipe 6 is fixedly connected to the inner side of the upper flask 2, and both ends of the second cooling water pipe 6 extend to the outer side of the upper flask 2. A water outlet 7 is provided at one end of the second cooling water pipe 6, and the end of the second cooling water pipe 6 away from the water outlet 7 is bent downward;

[0033] A corrugated hose 8 is installed between the bent ends of the first cooling water pipe 4 and the second cooling water pipe 6, and connectors 9 connected to the bent ends of the first cooling water pipe 4 and the second cooling water pipe 6 are installed at both ends of the corrugated hose 8, and a sealing rubber ring 10 is embedded inside the connector 9, and the sealing rubber ring 10 is respectively abutted against the outer walls of the bent ends of the first cooling water pipe 4 and the second cooling water pipe 6;

[0034] When the combined casting sand box is used, the casting sand is filled into the lower sand box 1 and the upper sand box 2 respectively, and compacted, and then the model is pressed on the casting sand, and the flow channel is reserved to be connected with the casting gate 3, and then the lower sand box 1 and the upper sand box 2 are fixedly connected together;

[0035] During the casting process through the casting gate 3, cold water is transported by an external water pump through the water inlet 5 of the first cooling water pipe 4, and the cold water is transported to the second cooling water pipe 6 through the corrugated hose 8. The first cooling water pipe 4 and the second cooling water pipe 6 are both arranged in a continuous S-shaped structure, so that the contact area with the casting sand can be effectively increased, thereby improving the cooling effect of the casting sand, thereby effectively preventing the casting sand from expanding rapidly due to high temperature during the casting process, reducing the deformation of the casting, and thus improving the casting accuracy.

[0036] like Figure 1 , Figure 2 As shown, both sides of the outer walls of the lower sand box 1 and the upper sand box 2 near the casting gate 3 are fixedly connected with a fixing plate 11, and a notch groove is opened at the end of the fixing plate 11, and a clamping bolt 12 is installed on the inner side of the notch groove, and the bottom end of the clamping bolt 12 abuts against the lower surface of the fixing plate 11 at the lower sand box 1, and a butterfly nut 13 is screwed on the top end of the clamping bolt 12, and the bottom end of the butterfly nut 13 abuts against the upper surface of the fixing plate 11 at the upper sand box 2;

[0037] It should be noted that by placing the clamping bolts 12 inside the notches of the two corresponding fixing plates 11 and then tightening the clamping bolts 12 with the butterfly nuts 13, the lower sand box 1 and the upper sand box 2 can be quickly docked and combined together.

[0038] like Figure 1 , Figure 2 , Figure 3 As shown, a boss is integrally formed at the top of the lower sand box 1, and a positioning boss 14 is symmetrically fixedly connected to the upper surface of the boss, and a boss is integrally formed at the bottom of the upper sand box 2, and a positioning hole 15 connected to the positioning boss 14 is opened on the surface of the boss, and the outer diameter of the positioning boss 14 is matched with the inner diameter of the positioning hole 15;

[0039] It should be noted that when the lower flask 1 and the upper flask 2 are butted together, the positioning bosses 14 are plugged into the positioning holes 15 to improve the precision of the butt-jointed assembly of the lower flask 1 and the upper flask 2.

[0040] When in use: fill the lower sand box 1 and the upper sand box 2 with casting sand respectively, and compact them, then press the model on the casting sand, and reserve a flow channel to connect with the casting gate 3, and then fix the lower sand box 1 and the upper sand box 2 together;

[0041] During the casting process through the casting gate 3, cold water is transported by an external water pump through the water inlet 5 of the first cooling water pipe 4, and the cold water is transported to the second cooling water pipe 6 through the corrugated hose 8. The first cooling water pipe 4 and the second cooling water pipe 6 are both arranged in a continuous S-shaped structure, so that the contact area with the casting sand can be effectively increased, thereby improving the cooling effect of the casting sand, thereby effectively preventing the casting sand from expanding rapidly due to high temperature during the casting process.

[0042] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A combined casting sand box, comprising a lower sand box (1), an upper sand box (2) combined and docked with the lower sand box (1), and casting gates (3) opened on the side walls of the lower sand box (1) and the upper sand box (2) and corresponding to each other, characterized in that: A first cooling water pipe (4) is installed on the inner side of the lower flask (1), and both ends of the first cooling water pipe (4) extend to the outer side of the lower flask (1), a water inlet (5) is provided at one end of the first cooling water pipe (4), and the end of the first cooling water pipe (4) away from the water inlet (5) is bent upward; A second cooling water pipe (6) is fixedly connected to the inner side of the upper flask (2), and both ends of the second cooling water pipe (6) extend to the outer side of the upper flask (2), a water outlet (7) is provided at one end of the second cooling water pipe (6), and the end of the second cooling water pipe (6) away from the water outlet (7) is bent downward; A corrugated hose (8) is installed between the bent ends of the first cooling water pipe (4) and the second cooling water pipe (6), and connectors (9) connected to the bent ends of the first cooling water pipe (4) and the second cooling water pipe (6) are installed at both ends of the corrugated hose (8), and a sealing rubber ring (10) is embedded on the inner side of the connector (9), and the sealing rubber ring (10) is respectively in contact with the outer walls of the bent ends of the first cooling water pipe (4) and the second cooling water pipe (6).

2. A combined casting sand box according to claim 1, characterized in that: The outer walls of both sides of the lower flask (1) and the upper flask (2) close to the casting gate (3) are fixedly connected with a fixing plate (11), and the end of the fixing plate (11) is provided with a notch groove.

3. A combined casting sand box according to claim 2, characterized in that: A clamping bolt (12) is installed inside the notch groove, and the bottom end of the clamping bolt (12) abuts against the lower surface of the fixing plate (11) at the lower sand box (1).

4. A combined casting sand box according to claim 3, characterized in that: A butterfly nut (13) is threaded onto the top end of the clamping bolt (12), and the bottom end of the butterfly nut (13) abuts against the upper surface of the fixing plate (11) at the upper sand box (2).

5. The combined casting sand box according to claim 1, characterized in that: A boss is integrally formed at the top opening of the lower sand box (1), and a positioning boss (14) is symmetrically fixedly connected to the upper surface of the boss.

6. The combined casting sand box according to claim 5, characterized in that: A boss is integrally formed at the bottom of the upper sand box (2), and a positioning hole (15) is provided on the surface of the boss to be plugged and connected to the positioning boss (14).

7. The combined casting sand box according to claim 6, characterized in that: The outer diameter of the positioning protrusion (14) is matched with the inner diameter of the positioning hole (15).

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