Die U-shaped cooling device for precision casting

Abstract

The utility model relates to the field of precision casting automatic moulds, and discloses a U-shaped cooling device for a precision casting mould, which comprises an upper mould and a lower mould, the upper mould and the lower mould are matched together through a guide post, two handles are arranged on the upper mould, and the two handles are arranged on the lower mould. A split loose piece is placed between the upper die and the lower die, loose piece side baffles are arranged at the two ends of the split loose piece, handles are installed on the loose piece side baffles, 90-degree connectors of a U-shaped cooling device are installed on the split loose piece respectively, one end of each 90-degree connector is connected with the U-shaped cooling device, and the other end of each 90-degree connector is connected with cooling water. According to the utility model, through the matching of the loose piece side baffle, the split loose piece, the U-shaped cooling partition plate and other structures, the size problem of long-cylinder products can be solved, no recess or few recesses are formed, the badness and scrap of wax patterns are reduced or avoided, the working efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of precision casting automatic molds, in particular to a U-shaped cooling device for precision casting molds. Background Art

[0002] Precision casting is a manufacturing process that precisely pours molten metal or alloy into a pre-prepared shell and solidifies it into a part or workpiece of the desired shape. It has the following characteristics: high precision, good surface quality, high dimensional accuracy, good internal quality, and high production efficiency. Wax molds are required in the production process of precision casting shells, and high-precision precision casting molds will be used in the production process of wax molds.

[0003] The process flow of precision casting technology is mainly divided into two parts: mold making and casting. The first is mold making. Mold making is the key to the entire process. Molds are generally made of materials with high temperature resistance and low thermal expansion coefficient, such as aluminum alloy, plastic mold steel, carbide mold steel, high-speed steel mold material, stainless steel mold material, etc. Casting mold refers to the mold used to form castings in the casting forming process. Casting molds are supporting the casting process, mainly gravity casting molds, high-pressure casting molds, low-pressure casting molds, extrusion casting molds, etc. Casting molds are one of the most important process equipment in casting production and have a great impact on the quality of castings. The improvement of casting mold technology will be of great significance to improving the quality of castings, developing new castings, and improving the level of near-net processing. Make the shape and size of the product in the mold, and add automatic modules and temperature control devices. The production of molds requires high precision to ensure the accuracy and surface quality of the product. Improvements in mold structure and design can ensure product diversity, improve efficiency in the production process, and reduce the use of corresponding auxiliary tools and materials. For molds with complex product structures and narrow cavities, molds with cooling systems are usually used.

[0004] In the traditional casting process, the product is usually cooled by directly connecting the cooling water to the outside, and the wax injection and pressure holding time are extended to cool and shape the inside of the product. This process has a long production cycle and cannot meet the needs of mass production. This production method can neither guarantee the dimensional accuracy of the product nor reduce production efficiency. The defective and scrap rates of products are also increased, which increases the production cost. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a U-shaped cooling device for precision casting molds, which aims to improve the production needs of long cylindrical products that cannot guarantee the dimensional accuracy and deformation in the cavity, thereby improving work efficiency, reducing the failure and scrap rate, and reducing production costs.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a U-shaped cooling device for precision casting mold, including a mold upper mold and a mold lower mold, the mold upper mold and the mold lower mold are matched together through a guide column, and two handles are installed on the mold upper mold.

[0007] Furthermore, a split movable block is placed between the upper mold and the lower mold.

[0008] Furthermore, two ends of the split movable block are provided with movable block side baffles.

[0009] Furthermore, a handle is installed on the movable block side baffle.

[0010] Furthermore, the split movable blocks are respectively provided with 90° joints of U-shaped cooling devices.

[0011] Furthermore, one end of the 90° joint is connected to the U-shaped cooling device and the other end is connected to cooling water.

[0012] Furthermore, a conical exhaust is installed at one end of the split movable block to facilitate core pulling, and a U-shaped cooling baffle is installed at the center of the split movable block to separate the U-shaped cooling device into two chambers, and a U-shaped channel is processed at the bottom end of the U-shaped cooling baffle.

[0013] Furthermore, a sealing groove is processed at the top end of the split movable block, in which an O-ring is placed, and the top end of the O-ring is blocked by a movable block side baffle.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, firstly, the cooling of the mold cavity of the long cylindrical product is realized by the U-shaped cooling device, thereby solving the problem that the inside of similar long cylindrical products cannot be cooled, resulting in the dent and deformation of the wax pattern. The utility model can meet the size problem of long cylindrical products, without dents or less dents, reduce or avoid the defective and scrapped wax patterns, improve work efficiency, and reduce production costs.

[0016] 2. In the utility model, the U-shaped cooling device is used to cool the mold cavity of the long cylindrical product, thereby solving the problem that the inside of similar long cylindrical products cannot be cooled, resulting in the dent and deformation of the wax model. The utility model can meet the size problem of long cylindrical products, without or with less dents, reduce or avoid the defective and scrapped wax models, improve work efficiency, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of a U-shaped cooling device for precision casting mold proposed by the utility model;

[0018] Figure 2This is a top view of a U-shaped cooling device for precision casting mold proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of a top view and cross-sectional structure of a U-shaped cooling device for precision casting mold proposed by the utility model;

[0020] Figure 4 The utility model is a three-dimensional schematic diagram of a U-shaped cooling device for precision casting molds.

[0021] Legend:

[0022] 1. Upper mold; 2. Lower mold; 3. Handle; 4. Side baffle of movable block; 5. Split movable block; 6. 90° joint; 7. U-shaped cooling baffle; 8. Conical exhaust; 9. O-ring; 10. Guide column. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1 and Figure 2 The utility model provides an embodiment: a U-shaped cooling device for a precision casting mold, comprising an upper mold 1 and a lower mold 2, the upper mold 1 and the lower mold 2 are matched together through a guide column 10, two handles 3 are installed on the upper mold 1, a split live block 5 is placed between the upper mold 1 and the lower mold 2, live block side baffles 4 are arranged at both ends of the split live block 5, handles 3 are installed on the live block side baffles 4, and 90° joints 6 of the U-shaped cooling device are respectively installed on the split live blocks 5.

[0025] Specifically, after adjusting the position of the wax injection port, the mold upper plate 1 and the mold lower plate 2 are combined together along the guide column 10 to ensure that there is no misalignment in the upper and lower cavities of the mold, and the split live block 5 is placed along the empty mold upper mold 1 and the mold lower mold 2. Before this, it is necessary to ensure that the handle 3 has been installed on the live block upper plate 4, and the handle 3 is also installed on the mold upper mold 1. Multiple handles 3 make this device easy to move and improve the flexibility of this device.

[0026] Reference Figures 1 to 4One end of the 90° joint 6 is connected to the U-shaped cooling device and the other end is connected to cooling water. A conical exhaust 8 is installed at one end of the split movable block 5 to facilitate core pulling. A U-shaped cooling baffle 7 is installed at the center of the split movable block 5 to separate the U-shaped cooling device into two chambers. A U-shaped channel is processed at the bottom end of the U-shaped cooling baffle 7, and a sealing groove is processed at the top end of the split movable block 5. An O-ring 9 is placed in the groove, and the top end of the O-ring 9 is blocked by the movable block side baffle 4.

[0027] Specifically, the side baffle plate 4 of the movable block is fastened to the split movable block 5 by means of screws. During this process, the O-ring 9 is placed in the sealing groove to ensure that the cooling water in the U-shaped cooling device will not flow out. A U-shaped cooling groove is opened in the middle of the split movable block 5, and a U-shaped cooling baffle plate 7 is installed in the cooling groove. The purpose of installing the U-shaped cooling baffle plate 7 is to divide the U-shaped cooling groove into two chambers, and a U-shaped cooling hole is opened at the bottom end of the U-shaped cooling baffle plate to facilitate the flow of cooling water. A conical exhaust is installed at the bottom end of the split movable block to ensure smooth removal of the model after the wax injection is completed. After the side baffle plate 4 of the movable block is locked on the split movable block 5, it is inserted into the mold and locked with bolts. The wax injection operation is performed by aligning the wax injection nozzle of the wax injection machine. After the above steps are completed in order, the wax injection process is completed, and then the wax mold is taken out to complete the wax injection operation.

[0028] Working principle: After adjusting the position of the wax injection port, combine the mold upper plate 1 and the mold lower plate 2 together along the guide column 10 to ensure that there is no misalignment between the upper and lower cavities of the mold, and put the split live block 5 along the empty mold upper mold 1 and the mold lower mold 2. Before this, it is necessary to ensure that the handle 3 has been installed on the live block upper plate 4, and the handle 3 is also installed on the mold upper mold 1. The live block side baffle 4 is screwed to the split live block 5. During this process, the O-ring 9 is placed in the sealing groove to ensure that the cooling water in the U-shaped cooling device will not flow out. A U-shaped cooling groove is opened in the middle, and a U-shaped cooling baffle 7 is installed in the cooling groove. The purpose of installing the U-shaped cooling baffle 7 is to divide the U-shaped cooling groove into two chambers, and a U-shaped cooling hole is opened at the lower end of the U-shaped cooling baffle to facilitate the flow of cooling water, and a conical exhaust is installed at the bottom end of the split movable block. In this way, the model can be smoothly removed after the wax injection is completed, and the movable block side baffle 4 is locked on the split movable block 5, and then inserted into the mold and locked with bolts, and the wax injection operation is performed with the wax injection nozzle of the wax injection machine. After the above steps are completed in order, the wax injection process is completed, and then the wax mold is taken out to complete the wax injection operation.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A U-shaped cooling device for precision casting, comprising an upper mold (1) and a lower mold (2), characterized in that: The upper mold (1) and the lower mold (2) are matched together through a guide column (10); two handles (3) are installed on the upper mold (1); a split movable block (5) is placed between the upper mold (1) and the lower mold (2); movable block side baffles (4) are arranged at both ends of the split movable block (5); handles (3) are installed on the movable block side baffles (4); and 90° joints (6) of a U-shaped cooling device are respectively installed on the split movable blocks (5).

2. A U-shaped cooling device for precision casting mold according to claim 1, characterized in that: One end of the 90° joint (6) is connected to the U-shaped cooling device and the other end is connected to cooling water.

3. A U-shaped cooling device for precision casting mold according to claim 1, characterized in that: A conical exhaust (8) is installed at one end of the split movable block (5) to facilitate core pulling, and a U-shaped cooling baffle (7) is installed at the center of the split movable block (5) to separate the U-shaped cooling device into two chambers, and a U-shaped channel is processed at the bottom end of the U-shaped cooling baffle (7).

4. A U-shaped cooling device for precision casting mold according to claim 3, characterized in that: A sealing groove is processed at the top end of the split movable block (5), and an O-type sealing ring (9) is placed in the groove. The top end of the O-type sealing ring (9) is blocked by a movable block side baffle (4).

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