Vacuum smelting furnace for smelting gold alloy

Abstract

The utility model relates to the technical field of vacuum melting furnaces, in particular to a vacuum melting furnace for melting gold alloy, which comprises a melting furnace and a fixed base, and is characterized in that the melting furnace is mounted on the fixed base through a pair of lifting components; a discharge pipe is arranged at the bottom of the smelting furnace; the lifting assembly comprises a stand column, the stand column is provided with a sliding inner cavity, a strip-shaped hole is formed in the side wall of the stand column, a screw is installed in the stand column, a second sliding block is installed on the screw, and one end of the screw penetrates through the end of the stand column and is fixedly connected with the output end of a second motor. The smelting furnace is fixedly connected with the second sliding blocks through connecting rods on the two sides. A slideway groove used for positioning and clamping is formed in the position, between the two stand columns, of the fixed base, the slideway groove is a T-shaped groove, the two first sliding blocks are installed on a lead screw, the two ends of the lead screw are installed on the fixed base, and the lead screw penetrates through the end of the fixed base to be fixedly connected with a first motor; and a positioning plate mounted above the fixed base is fixedly connected with the first sliding block through a moving rod. According to the vacuum smelting furnace for smelting the gold alloy, the problem that metal melt is discharged through a liquid outlet pipe at the bottom end of a smelting furnace in the prior art after smelting, and splashing is likely to occur when a mold is used for carrying is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum melting furnaces, in particular to a vacuum melting furnace for melting gold alloys. Background Art

[0002] Vacuum melting furnaces are mainly used by colleges and universities, scientific research institutions and production enterprises to melt metal materials (such as stainless steel, nickel-based alloys, copper, alloy steel, nickel-cobalt alloys, rare earth neodymium iron boron, etc.) under vacuum or protective atmosphere conditions. They can also be used for vacuum refining and precision casting of alloy steel.

[0003] In the process of gold alloy production, a vacuum melting furnace is used for melting. A high-frequency current is passed through a coil to interact with the metal inside the melting furnace to generate an eddy current in the metal to generate high temperature in a short period of time to achieve melting of the gold alloy. After melting, the liquid metal is discharged through a liquid outlet pipe at the bottom and received in a container. Under the action of gravity acceleration, the hot molten metal will splash at the moment of contact with the bottom of the inner cavity of the receiving mold, which affects the safety of the operator. To address this problem, a vacuum melting furnace for melting gold alloy is provided. Utility Model Content

[0004] The purpose of the utility model is to provide a vacuum melting furnace for melting gold alloys to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A vacuum melting furnace for melting gold alloys comprises a melting furnace and a fixed base, and the special feature thereof is that the melting furnace is installed on the fixed base through a pair of lifting assemblies; a discharge pipe is arranged at the bottom of the melting furnace; the lifting assembly comprises a column, the column has a sliding inner cavity and a strip hole is opened on the side wall, a screw is installed in the column, a second slider is installed on the screw, one end of the screw passes through the end of the column and is fixedly connected to the output end of the second motor; the melting furnace is fixedly connected to the second slider through connecting rods on both sides; a slideway groove for positioning and clamping is arranged between the two columns on the fixed base, the slideway groove is a T-shaped groove, two first sliders are installed on the screw rod, both ends of the screw rod are installed on the fixed base, and the screw rod passes through the end of the fixed base and is fixedly connected to the first motor; a positioning plate installed above the fixed base is fixedly connected to the first slider through a moving rod.

[0007] The advantages of the above technical solution are: the above solution designs a lifting structure of the melting furnace, which is convenient for the mold for receiving materials to be moved to the bottom of the melting furnace for placement, and when using molds of different sizes, the height of the melting furnace can be adjusted; in order to ensure the stability of the placement of the mold for receiving materials, a clamping mechanism is set at the bottom, and a lead screw is used to realize the opposite or reverse movement of the two first sliders, thereby driving the upper clamping device to move to realize the clamping action. Through the design of the above structure, it is convenient to discharge materials from the lower part of the melting furnace. When discharging materials, the distance between the discharge port and the mold can also be adjusted to reduce the occurrence of spattering, which is safer and more convenient.

[0008] In order to better implement the above technical solution, the following improvements can be made on the basis of the above technical solution:

[0009] Furthermore, the screw rod is a positive and negative thread screw rod.

[0010] The advantages of the above technical features are: the reverse thread screw is a screw with opposite threads at both ends. When it is rotated, it can realize the movement of the slider connected to its thread towards or in the opposite direction, which can more easily realize the function designed in this application.

[0011] Furthermore, a limiting groove is provided at the bottom of the slideway groove, one end of the limiting block is fixedly mounted on the first sliding block, and the other end of the limiting block is inserted into the limiting groove.

[0012] The advantages of the above technical features are: the above structure is used to improve the stability of the operation of the first slider, and the limit block can provide the first slider with a resistance to prevent it from rotating, so that it can move laterally on the screw rod.

[0013] Furthermore, the side surface of the positioning plate is a V-shaped structure.

[0014] The advantage of the above technical features is that different sizes of positioning plates can be processed according to the size of the V-shaped opening angle and suitable for different molds.

[0015] Further: A sealing cover is provided on the top of the smelting furnace.

[0016] The advantage of the above technical features is that the sealing cover is used to prevent sputtering during smelting.

[0017] In summary, compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. By setting the lifting assembly, the smelting furnace can be moved up and down along a straight line, so that the discharge pipe is inserted into the receiving mold and the top of the receiving mold is connected to the bottom of the smelting furnace, so that splashing can be avoided when the receiving mold receives the molten metal. This solves the problem that the smelting furnace in the prior art discharges the molten metal through the liquid discharge pipe at the bottom after smelting and uses the mold to receive it. Under the action of gravity acceleration, the hot molten metal will splash at the moment of contact with the bottom of the inner cavity of the receiving mold, which poses a hidden danger to the safety of operators;

[0019] 2. Through the setting of the sliding component, the two positioning plates can be moved at the same time. Since the sides of the two positioning plates close to each other are designed with a V-shaped structure, the two positioning plates can position the received mold, especially the cylindrical mold, so that the received mold is aligned with the discharge pipe and the received mold is fixed, avoiding spending a lot of time on adjusting the position of the received mold and avoiding the movement of the received mold, thereby improving the practicability of the device when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 This is a front sectional view of the sliding box of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the guide rod of the utility model;

[0023] Figure 4 This is a front cross-sectional view of the fixed base of the utility model;

[0024] Figure 5 For this utility model Figure 4 A is an enlarged view.

[0025] In the figure: 1. fixed base; 2. sliding box; 3. melting furnace; 4. positioning plate; 5. discharge pipe; 6. sealing cover; 7. first motor; 8. screw rod; 9. first slider; 10. slideway groove; 11. moving rod; 12. limit groove; 13. limit block; 14. second motor; 15. screw rod; 16. guide rod; 17. second slider; 18. strip hole; 19. connecting rod. DETAILED DESCRIPTION

[0026] 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 technical personnel in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 5 A vacuum melting furnace for melting gold alloys comprises a melting furnace 3 and a fixed base 1, wherein the melting furnace 3 is mounted on the fixed base 1 through a pair of lifting assemblies; a discharge pipe 5 is arranged at the bottom of the melting furnace 3; the lifting assembly comprises a column 2, wherein the column 2 has a sliding inner cavity and a strip hole 18 is opened on the side wall, a screw 15 is installed in the column 2, both ends of the screw are installed through bearings, a second slider 17 is installed on the screw 15, one end of the screw 15 passes through the end of the column 2 and is fixedly connected to the output end of the second motor 14; the melting furnace 3 is connected by two sides. The connecting rod 19 is fixedly connected to the second slider 17; a slideway groove 10 for positioning and clamping is provided on the fixed base 1 between the two columns, and the slideway groove 10 is a T-shaped groove. The two first sliders 9 are installed on the screw rod 8, and the screw rod 8 is a positive and negative thread screw rod. Both ends of the screw rod 8 are installed on the fixed base 1. The screw rod 8 is installed through a bearing to ensure the rotation of the screw rod, and the screw rod 8 passes through the end of the fixed base 1 and is fixedly connected to the first motor 7; the positioning plate 4 installed above the fixed base 1 is fixedly connected to the first slider 9 through the moving rod 11, and the side of the positioning plate 4 is a V-shaped structure;

[0028] A limiting groove 12 is provided at the bottom of the slideway groove 10 , one end of a limiting block 13 is fixedly mounted on the first slider 9 , and the other end of the limiting block 13 is inserted into the limiting groove 12 ; a sealing cover 6 is provided at the top of the smelting furnace 3 .

[0029] In this embodiment, the limit assembly includes a limit groove 12 and a limit block 13. The limit groove 12 is opened at the bottom end of the inner cavity of the fixed base 1. The two limit blocks 13 can be slidably embedded in the inner cavity of the limit groove 12 and are respectively fixedly connected to the bottom ends of the two sliders 9. Under the interaction between the limit groove 12 and the limit block 13, the slider 9 can be prevented from rotating with the screw rod 8 when the screw rod 8 rotates, thereby improving the stability of the sliding assembly during use.

[0030] In this embodiment, the inner cavity of the limiting groove 12 is matched with the outer wall of the limiting block 13 and both are in a "T" shape, so that one end of the limiting block 13 can always remain embedded in the inner cavity of the limiting groove 12, thereby improving the stability of the limiting assembly during use.

[0031] In this embodiment, the threads on both sides of the outer wall of the screw rod 8 are arranged opposite to each other, so that when the screw rod 8 rotates, the threads on both sides of its outer wall generate relative thread rotation force, so that the two sliders 9 slide relatively to each other at the same time under the limiting action of the limiting groove 12 and the limiting block 13.

[0032] In this embodiment, the second motor 14 is started so that the second motor 14 drives the screw 15 to rotate. Under the action of the rotational force of the outer wall thread of the screw 15, when the screw 15 rotates, the second slider 17 can drive the smelting furnace 3 to slide downward through the connecting rod 19 under the limiting action of the guide rod 16, so that the discharge pipe is inserted into the receiving mold.

[0033] The use method and advantages of the utility model: When in use, the working process is as follows:

[0034] When in use, the received mold is placed in the middle of the top surface of the fixed base 1 and between the two positioning plates 4, and the first motor 7 is started, so that the first motor 7 drives the screw rod 8 to rotate, and then the threads on the left and right sides of the outer wall of the screw rod 8 generate relative thread rotation force, so that the two first sliders 9 slide toward the middle of the screw rod 8 at the same time under the limiting action of the limiting groove 12 and the limiting block 13, and the two moving rods 11 respectively drive the two positioning plates to slide toward the middle of the top of the fixed base 1 at the same time; start the second motor 14, so that the second motor 14 drives the screw rod 15 to rotate, under the action of the thread rotation force of the outer wall of the screw rod 15, when the screw 15 rotates, the second slider 17 can drive the smelting furnace 3 to slide downward through the connecting rod 19 under the limiting action of the two guide rods 16, so that the discharge pipe is inserted into the received mold and the top of the received mold is in close contact with the bottom of the smelting furnace 3, so that the metal melt can be prevented from splashing when the received mold receives the metal melt.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A vacuum melting furnace for melting gold alloys, comprising a melting furnace (3) and a fixed base (1), characterized in that: The smelting furnace (3) is installed on a fixed base (1) through a pair of lifting assemblies; a discharge pipe (5) is arranged at the bottom of the smelting furnace (3); the lifting assembly comprises a column (2), the column (2) has a sliding inner cavity and a strip hole (18) is opened on the side wall, a screw (15) is installed in the column (2), a second slider (17) is installed on the screw (15), one end of the screw (15) passes through the end of the column (2) and is fixedly connected to the output end of the second motor (14); the smelting furnace (3) is connected to the second motor (14) through connecting rods ( 19) is fixedly connected to the second slider (17); a slideway groove (10) for positioning and clamping is arranged between the two columns on the fixed base (1), and the slideway groove (10) is a T-shaped groove. The two first sliders (9) are mounted on the screw rod (8), and both ends of the screw rod (8) are mounted on the fixed base (1), and the screw rod (8) passes through the end of the fixed base (1) and is fixedly connected to the first motor (7); the positioning plate (4) installed above the fixed base (1) is fixedly connected to the first slider (9) through the moving rod (11).

2. The vacuum melting furnace for melting gold alloy according to claim 1, characterized in that: The screw rod (8) is a positive and negative thread screw rod.

3. The vacuum melting furnace for melting gold alloy according to claim 1, characterized in that: A limiting groove (12) is provided at the bottom of the slideway groove (10); one end of a limiting block (13) is fixedly mounted on the first sliding block (9), and the other end of the limiting block (13) is inserted into the limiting groove (12).

4. The vacuum melting furnace for melting gold alloy according to claim 1, characterized in that: The side surface of the positioning plate (4) is a V-shaped structure.

5. The vacuum melting furnace for melting gold alloy according to claim 1, characterized in that: A sealing cover (6) is provided at the top of the smelting furnace (3).

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