TWM545237U - Feeding mechanism of electron beam melting furnace - Google Patents

Description

Feeding mechanism of electron beam melting furnace

The present invention provides a feeding mechanism, and more particularly to a feeding mechanism for conveying a metal rod to be smelted in an electron beam melting furnace.

Industrial manufacturing technology As the industry continues to upgrade, the materials required for industrial manufacturing technology are increasingly difficult to obtain due to their particularities. Materials that are difficult to obtain also contain high-purity or high-melting metals, in order to cope with these difficult-to-obtain metals. It is necessary to develop the technology of electron beam melting. Electron beam melting is the use of an electron gun to emit electron beams formed by high-speed electrons with kinetic energy. The impact of a metal material in a vacuum chamber converts kinetic energy into heat energy, and the ultra-high temperature generated by the impact causes the high melting point metal to melt. Gravity separates impurities of different densities, and the molten metal melt falls into a crucible. Under the vacuum environment of the vacuum chamber, the metal with high affinity for oxygen can be melted, or at a vacuum or extremely high temperature. In the environment, it is possible to melt a metal that needs to remove oxides or impurities.

For general electron beam melting continuous casting equipment, how to continuously supply materials to complete smelting is a key focus. At present, it is known that the method of continuously supplying materials can be divided into vertical feeding and horizontal feeding. Among them, the vertical feeding feeding device has the advantages of strengthening the molten metal into the crucible and melting the metal. The soup is vertically dropped to increase the efficiency of falling into the crucible, but the feeding device of the vertical feeding enters from above the vacuum chamber, and the fixing and feeding device of the material is complicated, and the feeding device for the vertical feeding is prepared. The cost of preparation is also relatively expensive, so electron beam melting continuous casting equipment is less in vertical feed design.

The feeding device of the horizontal feeding is simpler than the feeding device of the vertical feeding and the manufacturing cost is low. However, in the feeding device of the horizontal feeding, there is a problem that it is difficult to heat the entire surface when the material is too large. For the aforesaid problem, the existing Chinese patent CN202430014 and the Chinese patent CN204388614 provide a solution. The Chinese patent CN202430014 is taken as an example. The disclosed monolithic feeding device for the electron beam melting furnace comprises a feeding box, a pushing mechanism and a a feeding roller, the pushing mechanism is disposed in the feeding box, the pushing mechanism comprises a first screw, a first motor reducer and a first nut slider, wherein the first motor reducer is connected to the first a first screw slider is screwed on the first screw, and the first screw is driven to rotate by the first motor reducer to make an X-axis reciprocating motion of the first nut slider, the feeding a roller path is disposed at the bottom of the feeding box, the feeding roller path includes a second screw, a second motor reducer, a second nut slider and a feeding track, and the second motor reducer is connected to the first Two screw, the second nut slips a block screw is disposed on the second screw, and the second screw is driven to rotate through the second motor reducer to make the second nut slider reciprocate in a Y-axis perpendicular to the X-axis, the feed track is set On the second nut slider. The monolith feeding device is installed on the side of the vacuum chamber of the electron beam melting furnace, and a metal material rod is placed on the feeding rail, and is axially advanced by the pushing mechanism X, and the feeding roller table can be adjusted. The metal rod Y is axially displaced, and when the metal rod is pushed, the vacuum chamber is irradiated by the electron beam of the electron gun, the top of the metal rod can be heated.

However, the monolithic feed device for the electron beam melting furnace provides a feeding device capable of axially advancing and Y-axis displacement of the metal rod, and the monolith feeding device can only drive the metal rod to the horizontal plane X. The axial and Y-axis traverse, but the range irradiated by the electron beam cannot cover the top and bottom of the metal rod at the same time. When the electron beam illuminates the top of the metal rod, the top of the metal rod has been electronically The beam is melted to form a molten metal and begins to flow into the crucible. The bottom of the metal rod still has insufficient heat to be melted. The molten metal flows away from the top of the electron beam and then rapidly cools, so that the molten metal has not flowed into the crucible. Re-solidification, the X-axis propulsion and Y-axis displacement provided by the monolithic feeding device of the electron beam melting furnace can heat the top of the metal rod, and the top and bottom of the metal rod are still heated unevenly. Metal melting cannot be a problem of stable and continuous supply.

The main purpose of the present invention is to provide a feeding mechanism for an electron beam melting furnace, which is to solve the problem that when the existing feeding mechanism pushes the metal rod into the vacuum chamber of the electron beam melting furnace, the metal rod is heated by the electron beam. The unevenness causes the metal rod to melt to produce a problem that the molten metal cannot be stably and continuously supplied.

In order to achieve the foregoing, the feeding mechanism of the electron beam melting furnace of the present invention comprises: a hollow outer casing defining a horizontal X-axis, the outer casing forming an opening on one side of the X-axis; a carrying platform, Is disposed in the housing and adjacent to the opening, the carrier includes a groove extending along the X-axis and extending through the carrier; a propulsion device is disposed in the housing and located away from the a propulsion device comprising a propeller and a propulsion rod, the propulsion rod being reciprocable in the X-axis direction above the groove and connecting the propeller; a rotating device mounted on the In the housing, the rotating device comprises a rotary drive and a drive rod, and the drive rod is rotatably disposed under the support base and connected to the rotary drive.

In the feeding mechanism of the electron beam melting furnace as described above, the housing has a bottom plate, and the housing is provided with a tilting device, the tilting device includes two swinging blocks, and the two swinging blocks are respectively mounted on the carrying platform. The two sides of the two swinging blocks form a circular arc surface on opposite sides and parallel to the X-axis, and the arc-shaped curved surface contacts the bottom plate of the outer casing, so that the carrying platform can be on the X-axis by the two swinging blocks Swing up and down.

The feeding mechanism of the electron beam melting furnace of the present invention is installed on the side of the vacuum chamber of a pair of electron gun type electron beam melting furnace, and the metal rod is placed on the carrying platform in the outer casing, and the propulsion device and the The rotating device drives the metal rod to rotate into the vacuum chamber of the electron beam melting furnace, so that the metal rod is irradiated by the high-energy electron beam emitted from the electron gun in the electron beam melting furnace, and the metal rod rotates to make the top and bottom evenly It is heated and continuously melted to form a metal melt, and the molten metal can continuously flow into the crucible of the electron beam melting furnace.

The feeding mechanism of the present electron beam melting furnace further uses the tilting device to push the metal bar forward by the pushing device for a distance, and the tilting device tilts due to the offset of the center of gravity of the metal bar, the tilting device makes the bearing The table is inclined downward toward the opening direction, and the metal bar on the loading platform forms an inclined angle toward the crucible, and the tilting device makes the carrying platform form an inclined angle, so that the molten metal can be stably flowed into the crucible. .

As shown in FIG. 1 and FIG. 2, a preferred embodiment of the feeding mechanism of the electron beam melting furnace of the present invention is disclosed. As shown in the drawing, the feeding mechanism of the electron beam melting furnace of the present invention comprises a casing 10 and a bearing. The table 20, a propulsion device 30 and a rotating device 40.

The outer casing 10 is an openable and closable hollow member, and the outer casing 10 defines a horizontal X-axis. The outer casing 10 defines an opening on one side of the X-axis, wherein the outer casing 10 has a bottom plate therein.

The loading platform 20 is disposed on the inner side of the outer casing 10 and adjacent to the opening. The loading platform 20 includes a groove 21 extending along the X-axis and extending through the loading platform 20 . In the example, the carrying platform 20 forms two bearing slopes 22 on both sides of the groove 21.

The propulsion device 30 is disposed on the inner side of the outer casing 10 and located on a side away from the opening. The propulsion device 30 includes a propeller 31 and a propeller bar 32. The propulsion rod 32 can be disposed above the groove 21 The X axial direction reciprocates and connects the pusher 31.

The rotating device 40 is disposed on the inner side of the outer casing 10. The rotating device 40 includes a rotary drive 41 and a driving rod 42. The rotary drive 41 is disposed on the inner side of the outer casing 10. The driving rod 42 is rotatably disposed on the bearing. The rotary drive 41 is connected below the table 20, and in the preferred embodiment, the drive rod 42 is a screw.

As shown in FIG. 3 and FIG. 4, the feeding mechanism of the electron beam melting furnace further includes a tilting device 50 rotatably mounted on the bottom plate of the outer casing 10. The tilting device 50 includes two a swinging block 51, which is respectively mounted on opposite sides of the carrying platform and parallel to the X-axis, and each of the bottoms of the two swinging blocks 51 forms a circular curved surface, and contacts the outer casing with the circular curved surface The bottom plate of the first swinging block 51 is oscillated up and down in the X-axis by the two swinging blocks 51, and the top surface of the two swinging blocks 51 and the bottom plate are Forming an oblique angle, the stage 20 also has the angle of inclination.

As shown in FIG. 3 and FIG. 5, the preferred embodiment of the feeding mechanism of the present electron beam melting furnace is applied to the implementation mode of the dual electron gun type electron beam melting furnace, and the feeding mechanism of the electron beam melting furnace is installed in The side of the vacuum chamber 72 of the electron beam melting furnace 70, the outer casing 10 is connected to the vacuum chamber 72, and maintains a vacuum environment in the vacuum chamber 72. The propeller 31 and the rotary actuator 41 are electrically A control unit of the electron beam melting furnace 70 is connected. The user places the metal bar 60 on the carrying platform 20 in the outer casing 10, the metal bar 60 abuts against the two bearing ramps 22, and the metal bar 60 contacts the rotating device via the groove 21. The drive rod 42 of 40.

In the above, the user controls the rotation of the rotation driver 41 of the rotation device 40 and the pusher 31 of the propulsion device 30 through the control unit, wherein the rotation driver 41 drives the drive rod 42 to rotate, and the drive rod 42 is driven to be located. The metal rod 60 on the stage 20 rotates, and at the same time, the pusher 31 drives the push rod 32 to push the metal rod 60 toward the vacuum chamber 72 until the metal rod 60 extends into the electron beam. Above the crucible 73 in the vacuum chamber 72 of the melting furnace 70, two electron guns 71 located at the top of the vacuum chamber 72 respectively emit electron beams 711 projected onto the metal rod 60, and the high-energy electrons emitted by the two electron guns 71 are emitted. The extremely high temperature generated by the bundle 711 melts the metal rod 60, and is uniformly heated by the metal rod 60 to be rotated and continuously melted, and the metal rod 60 is melted to form a molten metal, and the molten metal falls below the crucible 73. in.

As shown in FIG. 6, the metal bar 60 is gradually advanced from the end thereof by the pusher 30 and the rotating device 40, while the metal bar 60 is rotated while being pushed toward the electron beam 711 of the two electron guns 71. The metal rod 60 is continuously rotated by the energy projected by the electron beam 711 of the two electron guns 71, so that the top and bottom of the metal rod 60 can be uniformly heated and melted, and the metal rod 60 is pushed to the vacuum. During the process of the cavity 72, the tilting device 50 connected to the loading table 20 can also be used. When the metal bar 60 is pushed forward by a certain distance, the loading platform 20 carrying the metal bar 60 will be centered on the center of the metal bar 60. The side of the swinging block 51 of the tilting device 50 facing the opening is such that the loading platform 20 is inclined downward toward the opening direction by the arc surface of the two swinging blocks 51, and the metal is located on the carrying platform 20. The rod 60 is formed at an oblique angle toward the crucible 73, and the metal rod 60 is maintained in a state of being irradiated by the electron beam 711 of the electron gun 71, thus contributing to the melting of the metal rod 60 by the irradiation of the electron beam 711. Metal melting continues Flows into the crucible 73 in. The metal rod 60 is rotated by the rotating device 40 to uniformly heat the top and bottom, and the tilting device 50 forms the metal rod 60 at an oblique angle, and the molten metal formed by the metal rod 60 can be stably formed. Inflow 坩埚73.

In summary, the feeding mechanism of the present electron beam melting furnace can rotate the metal bar 60 during the process of being propelled by the rotating device 40 and the propelling device 30, so that the electron beam melting furnace 70 During the smelting, the metal rod 60 can be uniformly heated and continuously melted to form a metal melt, the metal melt is maintained at a high temperature and maintained in a molten state, and the tilting device 50 is used to form the tilting angle of the loading platform 20. The molten metal is allowed to flow stably into the crucible 73, thereby providing a stable and continuous supply of the molten metal.

10‧‧‧ Shell
20‧‧‧Loading station
21‧‧‧ trench
22‧‧‧bearing bevel
30‧‧‧Protection device
31‧‧‧ propeller
32‧‧‧Feed rod
40‧‧‧Rotating device
41‧‧‧Rotary drive
42‧‧‧ drive rod
50‧‧‧ tilting device
51‧‧‧Swing block
60‧‧‧Metal bar
70‧‧‧Electron beam melting furnace
71‧‧‧Electronic gun
711‧‧‧electron beam
72‧‧‧vacuum chamber
73‧‧‧坩埚

Figure 1 is a side elevational view of a preferred embodiment of a feeding mechanism for the present e-beam melting furnace. Figure 2 is a partial front elevational view of a preferred embodiment of the feeding mechanism of the present electron beam melting furnace. Figure 3 is a side elevational view of another preferred embodiment of the feeding mechanism of the present e-beam melting furnace. Figure 4 is a partial front elevational view of another preferred embodiment of the feeding mechanism of the present e-beam melting furnace. Figure 5 is a side elevational view (I) of an operational state of another preferred embodiment of the feeding mechanism of the present electron beam melting furnace. Figure 6 is a side elevational view (b) of the operational state of a preferred embodiment of the feeding mechanism of the present electron beam melting furnace.

10‧‧‧ Shell

20‧‧‧Loading station

21‧‧‧ trench

30‧‧‧Protection device

31‧‧‧ propeller

32‧‧‧Feed rod

40‧‧‧Rotating device

41‧‧‧Rotary drive

42‧‧‧ drive rod

50‧‧‧ tilting device

51‧‧‧Swing block

60‧‧‧Metal bar

Claims (3)

A feeding mechanism for an electron beam melting furnace, comprising: a hollow outer casing defining a horizontal X-axis, the outer casing forming an opening on one side of the X-axis; and a loading platform disposed in the outer casing And adjacent to the opening, the carrier includes a groove extending along the X-axis and extending through the carrier; a propulsion device is disposed in the housing and located on a side away from the opening, The propulsion device comprises a propeller and a propulsion rod, the propulsion rod is reciprocable in the X-axis direction above the groove and connected to the propeller; a rotating device is installed in the casing, the rotating device A rotary drive and a drive rod are disposed, and the drive rod is rotatably disposed under the carrier and connected to the rotary drive. The feeding mechanism of the electron beam melting furnace according to claim 1, wherein the outer casing has a bottom plate, and the outer casing is provided with a tilting device, wherein the tilting device comprises two swinging blocks, and the two swinging blocks are respectively installed On the opposite sides of the carrying platform and parallel to the X-axis, the bottoms of the two swinging blocks form a circular arc surface, and the circular arc curved surface contacts the bottom plate of the outer casing, so that the carrying platform can be driven by the two swinging blocks Swing up and down in the X axis. The feeding mechanism of the electron beam melting furnace according to claim 1 or 2, wherein the driving rod is a screw.