A vacuum melting furnace with a feeding mechanism

Abstract

The present invention relates to the technical field of melting furnace equipment, and specifically discloses a vacuum melting furnace with a feeding mechanism, comprising: a melting device and a feeding mechanism, wherein a crucible is arranged on the melting device, and the feeding mechanism comprises a frame and a limit block, wherein the frame is located above the crucible, a positioning ring is arranged on the frame, and a plurality of limit blocks are distributed at intervals on the circumference of the positioning ring, and each of the limit blocks is connected to the frame through a first elastic member, and the limit blocks are slidably matched with the frame; the vacuum melting furnace with a feeding mechanism of the present invention applies inward pressure to the material through the limit blocks, and a plurality of first elastic members act together to balance the force on the material, so that the material can fall smoothly into the crucible to prevent the material from colliding with the crucible.

Description

Technical Field

[0001] The invention relates to the technical field of melting furnace equipment, and in particular to a vacuum melting furnace with a feeding mechanism. Background Art

[0002] Titanium alloy is an alloy composed of titanium and other metal elements. It is widely used in aerospace and marine industries. In the process of smelting titanium alloy, it is necessary to use lifting equipment to lift the titanium alloy electrode block, then move the titanium alloy electrode block to the top of the crucible, and then drop the titanium alloy electrode block into the crucible.

[0003] A Chinese patent with authorization announcement number CN210457188U discloses a titanium ingot lifting device, which includes a left clamp arm, a right clamp arm, a connecting roller, an anti-sway extrusion plate and an anti-slip protrusion. The left clamp arm and the right clamp arm are hinged through the connecting roller, and the surface of the left clamp arm on the outside of the connecting roller is provided with an arc-shaped through groove, and the surface of the right clamp arm on one side of the arc-shaped through groove is provided with an arc-shaped fastening screw groove. The top end of the left clamp arm is hinged to the left suspension arm through the connecting roller, and the top end of the right clamp arm is hinged to the right suspension arm through the connecting roller. The left suspension arm and the surface of the connecting roller inside the right suspension arm are hinged with a fixed hook, and support seats are fixed on the inner walls of both sides of the V-shaped suspension hook.

[0004] The above patent is provided with a support seat, an anti-sway screw barrel, an anti-sway screw and an anti-sway extrusion plate. By rotating the anti-sway screw barrel at one end of the support seat, the anti-sway screw barrel pushes the support seat to clamp the lifting device under the action of the anti-sway screw, thereby avoiding the shaking of the lifting device during lifting, thereby improving the stability of the lifting device during lifting.

[0005] However, during the feeding process, the material will swing and tilt, thereby colliding with the inner wall of the crucible, thus affecting the service life of the crucible. Summary of the invention

[0006] The present invention provides a vacuum melting furnace with a feeding mechanism, aiming to solve the problem in the related art that materials may swing and tilt during feeding, thereby colliding with the inner wall of a crucible and affecting the service life of the crucible.

[0007] The vacuum melting furnace with a feeding mechanism of the present invention comprises: a melting device and a feeding mechanism;

[0008] The smelting device is provided with a crucible;

[0009] The feeding mechanism includes a frame and a limit block. The frame is located above the crucible. A positioning ring is provided on the frame. A plurality of limit blocks are distributed at intervals around the positioning ring. Each limit block is connected to the frame through a first elastic member. The limit blocks are slidably fitted with the frame.

[0010] During the falling process of the material, the material will squeeze the limit block, causing the limit block to move outward. At the same time, the first elastic member will contract under the squeezing of the material, and exert inward pressure on the material through the limit block. The multiple first elastic members work together to balance the force on the material, so that the material can fall smoothly into the crucible and prevent the material from colliding with the crucible.

[0011] Preferably, a guide rail is fixedly connected to the bottom of the limit block, and the guide rail is slidably matched with the positioning ring. The limit block can move relative to the positioning ring along the extension direction of the guide rail.

[0012] Providing a guide rail can prevent the limit block from deviating during movement.

[0013] Preferably, a guide rod is rotatably engaged on the inner end of the limit block, the guide rod is connected to the limit block via a first torsion spring, and the guide rod can stop against the material.

[0014] The guide rods are squeezed during the falling process of the material, so that the guide rods are distributed vertically. Multiple guide rods are distributed around the material, so that the material moves downward along the guide rods, further preventing the material from shaking during the falling process.

[0015] Preferably, rollers are provided at both ends of the guide rod.

[0016] The roller can roll along the material, thereby reducing the friction between the guide rod and the material and preventing the guide rod from wearing.

[0017] Preferably, a positioning plate is slidably fitted at the bottom of the guide rail, the positioning plate is connected to the guide rail via a second elastic member, and the positioning plate can abut against the inner wall of the crucible.

[0018] The second elastic member applies an outward thrust to the positioning plate, so that the positioning plate abuts against the inner wall of the crucible. When the elastic forces of the plurality of second elastic members are in a balanced state, the center of the positioning ring coincides with the center of the crucible, which facilitates the placement of the material at the center of the crucible and prevents uneven heating of the material during the smelting process.

[0019] Preferably, a limit rod is also provided on the guide rail, and the limit rod is rotatably connected to the guide rail through a second torsion spring, and the limit rod can stop against the positioning plate. A shift rod is provided on the positioning ring, and the shift rod is connected to the positioning ring through a third elastic member, and the shift rod can stop against the limit rod, thereby pushing the limit rod to rotate.

[0020] Preferably, a lifting mechanism is provided at the bottom of the frame, and the lifting mechanism is used to drive the frame to move up and down.

[0021] Preferably, a universal wheel is provided at the bottom of the lifting mechanism, and the universal wheel can drive the feeding mechanism to move.

[0022] By adopting the above technical solution, the beneficial effects of the present invention are:

[0023] According to the vacuum melting furnace with a feeding mechanism of the embodiment of the present invention, during the falling process of the material, the material will squeeze the limit block, causing the limit block to move outward, and at the same time, the first elastic member will contract under the squeezing of the material, and exert inward pressure on the material through the limit block. The multiple first elastic members work together to balance the force on the material, and the material can fall smoothly into the crucible, preventing the material from colliding with the crucible, thereby increasing the service life of the crucible. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of a vacuum melting furnace with a feeding mechanism according to an embodiment of the present invention.

[0025] Figure 2 It is a schematic structural diagram of a feeding mechanism according to an embodiment of the present invention.

[0026] Figure 3 It is a schematic diagram of the installation of the limit block of an embodiment of the present invention.

[0027] Figure 4 2 is a schematic diagram of the guide rod structure of an embodiment of the present invention.

[0028] Figure 5 It is a schematic diagram of the coordination of the guide rail, the positioning plate and the limiting rod according to an embodiment of the present invention.

[0029] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0030] Figure 7 2 is a schematic diagram of the limit rod structure of an embodiment of the present invention.

[0031] Figure 8 2 is a schematic diagram of the lever structure of an embodiment of the present invention.

[0032] Reference numerals:

[0033] 100. smelting device; 200. crucible; 300. feeding mechanism;

[0034] 1. Frame; 2. Positioning ring; 3. Limiting block; 4. First elastic member; 5. Guide rail; 6. Guide rod; 7. Roller; 8. Positioning plate; 9. Second elastic member; 10. Limiting rod; 101. Limiting protrusion; 102. Arc-shaped protrusion; 11. Push rod; 12. Third elastic member; 13. Stop rod; 14. Lifting mechanism; 15. Universal wheel. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] like Figures 1 to 8 As shown, the vacuum melting furnace with a feeding mechanism of the present invention comprises: a melting device 100 and a feeding mechanism 300 .

[0037] Specifically, Figure 1 As shown, a crucible 200 is provided on the smelting device 100 . The crucible 200 is used to smelt the titanium alloy electrode block. A feeding mechanism 300 is provided above the crucible 200 .

[0038] like Figures 2 to 5 As shown, the feeding mechanism 300 includes a frame 1 and a limit block 3. A lifting mechanism 14 is provided at the bottom of the frame 1. The lifting mechanism 14 is a scissor lift mechanism 14 in conventional technology, which is used to drive the frame 1 to move up and down. A universal wheel 15 is also provided at the bottom of the lifting mechanism 14, and the universal wheel 15 can drive the feeding mechanism 300 to move. A positioning ring 2 is fixedly connected to the frame 1, and a plurality of limit blocks 3 are evenly spaced along the circumference of the positioning ring 2. A guide rail 5 is fixedly connected to the bottom of each limit block 3. The guide rail 5 is slidably matched with the positioning ring 2. The guide rail 5 is tiltedly distributed. There is an angle between the guide rail 5 and the inner wall of the positioning ring 2. The limit block 3 is elastically connected to the positioning ring 2 through a first elastic member 4. The first elastic member 4 is a spring connecting rod, one end of which is fixedly connected to the limit block 3 and the other end of which is slidably matched with the positioning ring 2. The spring connecting rod can move up and down relative to the positioning ring 2, and its spring portion is stopped against the positioning ring 2. A guide rod 6 is also provided at the inner end of the limit block 3 , and the guide rod 6 is rotatably connected to the limit block 3 via a first torsion spring, and rollers 7 are rotatably fitted at both ends of the guide rod 6 .

[0039] like Figures 5 to 8As shown, the bottom of the guide rail 5 is slidably matched with a positioning plate 8, the bottom end of the guide rail 5 is provided with a truncated cone-shaped slide groove, the top of the positioning plate 8 is provided with a matching key, the matching key is slidably matched in the truncated cone-shaped slide groove, and the bottom end of the matching key abuts against the guide rail 5, thereby preventing the positioning plate 8 from falling off under the action of gravity. The inner side wall of the positioning plate 8 is elastically connected to the guide rail 5 through a second elastic member 9, and the second elastic member 9 is a spring. A limiting rod 10 is also provided on the guide rail 5, and the limiting rod 10 is rotatably connected to the guide rail 5 through a second torsion spring. One end of the limiting rod 10 has a limiting protrusion 101, and the limiting rod 10 can abut against the positioning plate 8 through the limiting protrusion 101. The positioning ring 2 is provided with a lever 11, which is elastically connected to the positioning ring 2 through a third elastic member 12, which is a spring. The lever 11 is slidably matched with the positioning ring 2, and can move up and down relative to the positioning ring 2. There is a gap between the limit rod 10 and the limit block 3, and the lever 11 can extend into the gap and stop with the limit rod 10. The limit rod 10 is provided with an arc-shaped protrusion 102. When the limit block 3 moves outward along the extension direction of the guide rail 5, the limit rod 10 moves synchronously with the guide rail 5, so that the lever 11 moves along the gap, thereby squeezing the arc-shaped protrusion 102 and pushing the limit rod 10 to rotate, so that the limit protrusion 101 is out of contact with the positioning plate 8. The guide rail 5 is also provided with a stop rod 13, which can stop with the bottom end of the limit rod 10, and the stop rod 13 is used to limit the rotation range of the limit rod 10.

[0040] According to the vacuum melting furnace with a feeding mechanism of the embodiment of the present invention, the material is moved to the top of the crucible 200 by an external crane, and then the material is gradually lowered. During the falling process of the material, the bottom of the material abuts against the limit block 3, and overcomes the elastic force of the first elastic member 4 to push the limit block 3 to move outward along the extension direction of the guide rail 5. The first elastic member 4 contracts. When the limit block 3 moves outward along the extension direction of the guide rail 5, the guide rail 5 moves synchronously with the limit block 3, and the limit rod 10 moves synchronously with the guide rail 5, so that the lever 11 can move along the gap between the limit rod 10 and the limit block 3. When the lever 11 moves to the arc-shaped protrusion 102, it squeezes the limit rod 10, thereby pushing the limit rod 10 to rotate, and making the limit rod 1 0, the limiting protrusion 101 at the end is out of contact with the positioning plate 8, the second elastic member 9 stretches and pushes the positioning plate 8 to quickly approach the inner wall of the crucible 200 until the positioning plate 8 and the inner wall of the crucible 200 stop. The multiple positioning plates 8 work together to make the material and the crucible 200 coaxially distributed, so as to find the center of the crucible 200. At this time, the guide rail 5 continues to move outward. Since the inner wall of the crucible 200 stops against the positioning plate 8, the positioning plate 8 is prevented from moving. The guide rail 5 moves outward relative to the positioning plate 8, the second elastic member 9 contracts, and the positioning plate 8 returns to the inner side of the limiting rod 10. The limiting rod 10 returns to its original position under the action of the second torsion spring, so that the limiting protrusion 101 stops against the positioning plate 8 again.

[0041] When the limit block 3 moves outward to the limit, the side wall of the material stops against the limit block 3. At this time, the guide rod 6 is vertically distributed under the extrusion of the material, and the rollers 7 at both ends stop against the side wall of the material. The first elastic member 4 applies an inward thrust to the limit block 3, so that the guide rod 6 is tightly attached to the side wall of the material. Multiple guide rods 6 work together to prevent the material from shaking when falling and prevent the material from colliding with the inner wall of the crucible 200. After the material completely enters the crucible 200, the material is out of contact with the feeding mechanism 300, and the lifting mechanism 14 drives the frame 1 to move upward, and then pulls the frame 1, and the feeding mechanism 300 is moved away from the crucible 200 through the universal wheel 15. At this time, the smelting operation can be carried out.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A vacuum melting furnace with a feeding mechanism, comprising: A smelting device, wherein the smelting device is provided with a crucible; The invention is characterized in that it also includes a feeding mechanism, wherein the feeding mechanism includes a frame and a limit block, the frame is located above the crucible, a positioning ring is provided on the frame, a plurality of limit blocks are spaced and distributed around the positioning ring, each of the limit blocks is connected to the frame through a first elastic member, and the limit blocks are slidably matched with the frame; A guide rail is fixedly connected to the bottom of the limit block, and the guide rail is slidably matched with the positioning ring. The limit block can move relative to the positioning ring along the extension direction of the guide rail; A positioning plate is slidably matched at the bottom of the guide rail, the positioning plate is connected to the guide rail via a second elastic member, and the positioning plate can abut against the inner wall of the crucible; A limit rod is also provided on the guide rail, and the limit rod is rotatably connected to the guide rail through a second torsion spring. The limit rod can stop against the positioning plate. A shift rod is provided on the positioning ring, and the shift rod is connected to the positioning ring through a third elastic member. The shift rod can stop against the limit rod, thereby pushing the limit rod to rotate.

2. The vacuum melting furnace with a feeding mechanism according to claim 1, characterized in that: A guide rod is rotatably matched on the inner end of the limit block, and the guide rod is connected to the limit block through a first torsion spring. The guide rod can stop against the material.

3. The vacuum melting furnace with a feeding mechanism according to claim 2, characterized in that: Rollers are arranged at both ends of the guide rod.

4. The vacuum melting furnace with a feeding mechanism according to claim 1, characterized in that: A lifting mechanism is provided at the bottom of the frame, and the lifting mechanism is used to drive the frame to move up and down.

5. The vacuum melting furnace with a feeding mechanism according to claim 4, characterized in that: A universal wheel is provided at the bottom of the lifting mechanism, and the universal wheel can drive the feeding mechanism to move.

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