Alloy melting furnace welding device

Abstract

The invention discloses an alloy melting furnace welding device, which relates to the field of melting furnace welding, including a workbench and a welding mechanism, and also includes a supporting mechanism, which is used to fix an annular end cover, an arc-shaped inner support plate can rotate around the central axis of the annular end cover, and the outer side of the arc-shaped inner support plate and the outer edge of the annular end cover have a spacing, an outer extrusion piece is located on the outer side of the arc-shaped inner support plate and is in the same plane with the arc-shaped inner support plate, and the outer extrusion piece can rotate around the central axis of the annular end cover to squeeze a cylinder body on the outer side of the arc-shaped inner support plate; the alloy melting furnace welding device, through the cooperation of the arc-shaped inner support plate and the outer extrusion piece, the alignment of the cylinder body and the annular end cover is always kept stable during the welding process, avoiding relative displacement of the cylinder body and the annular end cover at the welding position during welding, and at the same time, the cylinder body is adjusted to a desired position and roundness during the welding process as the arc-shaped inner support plate and the outer extrusion piece rotate, thereby improving the stability and accuracy of welding.

Description

Technical Field

[0001] The invention relates to a smelting furnace welding technology, and in particular to an alloy smelting furnace welding device. Background Art

[0002] The crucible body of the smelting furnace is generally installed in a cylindrical shell, which is composed of an annular end cover and a cylinder body welded together. The hollow part of the annular end cover corresponds to the opening of the crucible body. The annular end cover and the cylinder body are welded to form a shell. At present, since the cylinder body is a roughly circular shape formed by bending the sheet metal, the welding process of the shell is generally as follows: first, align the welding parts of the cylinder body and the annular end cover, adopt artificial annular seam for welding, and then weld the butt joint of the cylinder body after welding the cylinder body and the annular end cover. When the cylinder body and the annular end cover are aligned before welding, the diameter of the annular end cover needs to be larger than the diameter of the cylinder body. On the one hand, it is a process requirement, and on the other hand, it is also to leave a certain margin for the welding position. However, during the welding process, the alignment position of the cylinder body and the annular cover will be offset, resulting in a certain deformation of the cylinder body after welding, and the roundness is reduced, which in turn affects the subsequent welding of the butt joint of the cylinder body itself, as well as the subsequent installation of the furnace body and corresponding components. Summary of the invention

[0003] The object of the present invention is to provide an alloy melting furnace welding device to solve the above-mentioned deficiencies in the prior art.

[0004] In order to achieve the above object, the present invention provides the following technical solution: an alloy melting furnace welding device, comprising a workbench and a welding mechanism, and also comprising:

[0005] A supporting mechanism for fixing the annular end cover;

[0006] An arc-shaped inner support plate, which is located at a first position on a side of the annular end cover away from the support mechanism, the arc-shaped inner support plate can rotate around the central axis of the annular end cover, and there is a distance between the outer side of the arc-shaped inner support plate and the outer edge of the annular end cover;

[0007] An outer extrusion piece is located outside the arc-shaped inner support plate and is in the same plane as the arc-shaped inner support plate, and the outer extrusion piece can rotate around the central axis of the annular end cover to squeeze the cylinder outside the arc-shaped inner support plate;

[0008] A driving mechanism, which is used to drive the arc-shaped inner support plate and the outer extrusion member to rotate synchronously;

[0009] The welding mechanism welds the cylinder and the annular end cover on one side of the outer extrusion piece.

[0010] Furthermore, the arc-shaped inner support plate is concentric with the arc-shaped annular end cover when located at the first position.

[0011] Furthermore, the outer extrusion component comprises at least two extrusion ends, and an assembly station is provided between two adjacent extrusion ends, wherein one assembly station is used for installing the welding mechanism.

[0012] Furthermore, the curvature of the arc-shaped inner support plate is 15° to 45°.

[0013] Furthermore, the supporting mechanism is a four-jaw self-centering chuck, which is mounted on the workbench through a center axis.

[0014] Furthermore, the arc-shaped inner support plate is connected to the driving mechanism through a rotating mechanism, and the rotating mechanism is used to drive the arc-shaped inner support plate to move between a first position and a second position. In the second position, the projection of the arc-shaped inner support plate on the plane where the annular end cover is located is located inside the inner edge of the annular end cover.

[0015] Furthermore, the arc-shaped inner support plate is detachably installed on one side of the slewing mechanism.

[0016] Furthermore, a top wheel is installed on one side of the arc-shaped inner support plate close to its rotation direction, and the distance between the top wheel and the center of the arc-shaped inner support plate is greater than the diameter of the arc-shaped inner support plate.

[0017] Furthermore, a plurality of rollers are installed on one side of the arc-shaped inner support plate close to the outer extrusion member.

[0018] Furthermore, the driving mechanism includes a first driving member and a second driving member, which are respectively used to drive the rotary mechanism and the outer extrusion member to rotate.

[0019] Compared with the prior art, the alloy melting furnace welding device provided by the present invention has the following beneficial effects:

[0020] The alloy melting furnace welding device, through the cooperation of the arc-shaped inner support plate and the outer extrusion part, ensures that the alignment of the cylinder and the annular end cover is always kept stable during the welding process, thereby avoiding relative displacement of the cylinder and the annular end cover at the welding position during welding. At the same time, during the welding process, the cylinder is adjusted to the required position and roundness as the arc-shaped inner support plate and the outer extrusion part rotate, thereby improving the stability and accuracy of welding and further improving the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the structure of the welding device provided by an embodiment of the present invention after placing an annular cover body and a cylinder body;

[0023] Figure 2 The embodiment of the present invention provides Figure 1 Schematic diagram of the structure after the middle cylinder is removed;

[0024] Figure 3 A schematic diagram of a first bracket and a second bracket in a separated state in an outer extrusion member provided in an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of a separation state of a third bracket, a fourth bracket and a fifth bracket in a slewing mechanism provided in an embodiment of the present invention;

[0026] Figure 5 The embodiment of the present invention provides Figure 2 A schematic diagram of the supporting mechanism structure under a partial longitudinal section;

[0027] Figure 6 The embodiment of the present invention provides Figure 3 Schematic diagram of the local structure;

[0028] Figure 7 The embodiment of the present invention provides Figure 2 A schematic diagram of the driving mechanism structure under a partial longitudinal section;

[0029] Figure 8 A schematic diagram of a welding position in which there is a gap between the cylinder and the arc-shaped inner support plate provided in an embodiment of the present invention;

[0030] Fig. 9 A schematic diagram of the structure after a top wheel is installed at one end of the arc-shaped inner support plate provided by an embodiment of the present invention;

[0031] Fig.10 A schematic diagram of the structure after rollers are installed on the outer side of the arc-shaped inner support plate provided in an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Workbench; 2. Support mechanism; 21. Support platform; 22. Slider; 23. Turntable; 24. Crank; 25. A driving member; 3. Arc inner support plate; 31. Top wheel; 32. Roller; 4. External extrusion member; 41. Extrusion end; 411. First pressing wheel; 412. First bracket; 413. Second bracket; 414. Guide column; 415. Threaded rod; 416. First support plate; 417. Second support plate; 418. E Driving member; 42, assembly station; 43, measuring assembly; 5, driving mechanism; 51, first rotating shaft; 52, first rotating drum; 53, second rotating shaft; 54, first bevel gear; 55, second bevel gear; 56, double-sided bevel gear; 6, center axis; 7, rotating mechanism; 71, third bracket; 72, fourth bracket; 73, B driving member; 74, fifth bracket; 75, L-shaped toothed plate; 76, first gear; 77, U-shaped plate;

[0034] 100. annular end cover; 200. cylinder body. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] For examples, see Figure 1 - Fig.10 , an alloy melting furnace welding device, comprising a workbench 1 and a welding mechanism, and also comprising:

[0037] A supporting mechanism 2, which is used to fix the annular end cover 100;

[0038] The arc-shaped inner support plate 3 is located at a first position on the side of the annular end cover 100 away from the support mechanism 2, and the arc-shaped inner support plate 3 can rotate around the central axis 6 of the annular end cover 100, and the outer side of the arc-shaped inner support plate 3 is spaced from the outer edge of the annular end cover 100;

[0039] The outer extrusion member 4 is located outside the arc-shaped inner support plate 3 and is in the same plane as the arc-shaped inner support plate 3. The outer extrusion member 4 can rotate around the central axis 6 of the annular end cover 100 to squeeze the cylinder 200 outside the arc-shaped inner support plate 3;

[0040] A driving mechanism 5, which is used to drive the arc-shaped inner support plate 3 and the outer extrusion member 4 to rotate synchronously;

[0041] The welding mechanism welds the cylinder 200 and the annular end cover 100 on one side of the outer extrusion member 4 .

[0042] In one embodiment of the present invention, when the arc-shaped inner support plate 3 is located at the first position, its center coincides with the center of the annular end cover 100;

[0043] It should be noted that, generally, a certain specification of the arc-shaped inner support plate 3 corresponds to a certain type of annular end cover 100 and cylinder 200, that is, for the annular end cover 100 and cylinder 200 with a certain diameter, the diameter of the arc-shaped inner support plate 3 is also certain, and when the arc-shaped inner support plate 3 is located at the first position, the outer edge of the arc-shaped inner support plate 3 and the edge of the annular end cover 100 will have a certain distance, and the distance satisfies: when the cylinder 200 is pressed against the edge of the arc-shaped inner support plate 3, the cylinder 200 and the annular end cover 100 maintain a certain relative position, which is the position where the cylinder 200 and the annular end cover 100 are aligned during welding;

[0044] In one embodiment of the present invention, the outer extrusion member 4 includes two extrusion ends 41, and an assembly station 42 is provided between the two extrusion ends 41. The assembly station 42 is used to install the welding mechanism.

[0045] In one embodiment of the present invention, a plurality of extrusion ends 41 may be provided, wherein one assembly station 42 is used to install a welding mechanism, and other assembly stations 42 may also be used to install a cleaning component (not shown) or a measuring component 43;

[0046] In one embodiment of the present invention, the cleaning component or the measuring component 43 is installed in front of the moving direction of the welding mechanism, that is, when the outer extrusion member 4 rotates, the cleaning component or the measuring component 43 first contacts the welding position;

[0047] The cleaning components include but are not limited to a common steel wire brush (not shown in the figure), which is used to clean the welding position before or during welding work;

[0048] The measuring component 43 is a laser rangefinder or a dial indicator. During the rotation of the outer extrusion member 4, the roundness of the side edge of the annular end cover 100 is measured by the laser rangefinder or the dial indicator. It should be noted that the measurement process is usually performed before welding, and is used to detect the roundness of the outer edge of the annular end cover 100 after the support mechanism 2 fixes the annular end cover 100. Figure 6 A schematic diagram of installing a dial indicator at assembly station 42 is given in FIG.

[0049] In one embodiment of the present invention, the welding mechanism is detachably mounted on the assembly station 42. The assembly station 42 is as follows: Figure 3 As shown, the welding mechanism includes but is not limited to a general laser welding device, the welding head of which is aligned with the desired welding position, and the welding position is welded as the outer extrusion member 4 rotates. The welding mechanism is a prior art and will not be described in detail here, nor is it drawn in the figure;

[0050] In one embodiment of the present invention, the extrusion end 41 includes at least one first pressing wheel 411, the outer extrusion member 4 includes a first bracket 412 and a second bracket 413, the first bracket 412 is connected to the driving mechanism 5, the first pressing wheel 411 is installed on the second bracket 413, a guide column 414 is installed on one side of the first bracket 412, the inner wall of the second bracket 413 is slidably connected to the surface of the guide column 414, and a threaded rod 415 is rotatably installed on one side of the first bracket 412, one end of the threaded rod 415 is threadedly connected to the inner wall of the second bracket 413, and the distance between the second bracket 413 and the first bracket 412 is adjusted by rotating the threaded rod 415, so as to adjust the position of the first pressing wheel 411, such as Figure 3 As shown, when two extrusion ends 41 are set, the two extrusion ends 41 are respectively located at the two ends of the second bracket 413, and the extrusion ends 41 can also be installed with two first pressing wheels 411 to increase the extrusion area of ​​the cylinder 200, so as to facilitate the complete contact between the cylinder 200 and one side of the arc-shaped inner support plate 3.

[0051] In one embodiment of the present invention, the curvature of the arc-shaped inner support plate 3 is 15° to 45°. It should be noted that the radius of the arc-shaped inner support plate 3 depends on the size of the welded annular end cover 100 and the cylinder 200, and the curvature determines the arc length of the arc-shaped inner support plate 3 at a certain radius. For the arc-shaped inner support plate 3 with a larger radius, the smaller the required curvature is. On the contrary, the arc-shaped inner support plate 3 with a larger radius has a larger required curvature. The purpose is to obtain a sufficient position, which is to meet the extrusion end 41 to extrude the cylinder 200 on the surface of the arc-shaped inner support plate 3 and have at least one assembly station 42 for installing the welding mechanism. It should be understood that when three extrusion ends 41 are set, the required curvature increases accordingly.

[0052] In one embodiment of the present invention, see Figure 5 The support mechanism 2 is a four-claw self-centering chuck, which is installed on the workbench 1 through the central axis 6. Specifically, the support mechanism 2 includes a support platform 21 fixedly installed on the top of the central axis 6. A slide groove for four sliders 22 to move is opened in the support platform 21. The slide groove is distributed in a ring array. A block is set on the top of the slider 22. A turntable 23 is rotatably connected to the middle of the support platform 21. The turntable 23 is rotatably connected to the four sliders 22 through four cranks 24. The bottoms of the two sliders 22 that are far away are connected to the A driving member 25 that can move linearly. A The driving member 25 is a cylinder or a hydraulic cylinder or an electric telescopic rod. The piston rod of the cylinder or the piston rod of the hydraulic cylinder or the telescopic rod of the electric telescopic rod is connected to one of the sliders 22, and the cylinder body of the cylinder or the cylinder body of the hydraulic cylinder or the cylinder body of the electric telescopic rod is connected to the other slider 22. By driving the two sliders 22 to move closer to or away from each other and driving the turntable 23 to rotate when the crank 24 moves, the other two sliders 22 are driven to move, and the inner side of the annular end cover 100 is supported and clamped by a four-jaw self-centering chuck, so that the annular end cover 100 is fixed on the supporting platform 21.

[0053] In one embodiment of the present invention, the arc-shaped inner support plate 3 is connected to the driving mechanism 5 through a rotating mechanism 7, and the rotating mechanism 7 is used to drive the arc-shaped inner support plate 3 to move between a first position and a second position. In the second position, the projection of the arc-shaped inner support plate 3 on the plane where the annular end cover 100 is located is located inside the inner edge of the annular end cover;

[0054] In one embodiment of the present invention, the slewing mechanism 7 drives the arc-shaped inner support plate 3 to move to the second position along the radial direction of the annular end cover 100. Specifically, the slewing mechanism 7 includes a third bracket 71 and a fourth bracket 72. The third bracket 71 is connected to one side of the driving mechanism 5. The fourth bracket 72 is slidably connected to the third bracket 71. The fourth bracket 72 is connected to the arc-shaped inner support plate 3. The slewing mechanism 7 also includes a B driving member 73. The B driving member 73 is a cylinder or a hydraulic cylinder or an electric telescopic rod. The piston rod of the cylinder or the piston rod of the hydraulic cylinder or the telescopic rod of the electric telescopic rod is connected to the fourth bracket 72. The cylinder body of the cylinder or the cylinder body of the hydraulic cylinder or the cylinder body of the electric telescopic rod is fixedly installed on the third bracket 71. The fourth bracket 72 is driven to move by the slewing mechanism 7, thereby driving the arc-shaped inner support plate 3 to move between the first position and the second position.

[0055] In one embodiment of the present invention, due to the size limitation of the inner diameter of the annular end cover 100, when the arc-shaped inner support plate 3 is moved by the above-mentioned rotating mechanism 7, it cannot be moved to the desired second position due to the small inner diameter of the annular end cover 100, resulting in the problem that the annular end cover 100 is difficult to remove after being fixed and welded;

[0056] Another mode for the rotary mechanism 7 to drive the annular inner support plate to move is provided. The rotary mechanism 7 is used to drive the arc-shaped inner support plate 3 to move radially along the annular end cover 100 to the third position and then rotate around the connection between the rotary mechanism 7 and the driving mechanism 5 to the second position. In the second position, the projection of the arc-shaped inner support plate 3 on the plane where the annular end cover 100 is located is located inside the inner edge of the annular end cover. Specifically, it also includes a fifth bracket 74, which is connected to the driving mechanism 5. One end of the third bracket 71 is rotatably mounted on one end of the fifth bracket 74 through a rotating shaft. The end of the fourth bracket 72 away from the arc-shaped inner support plate 3 is fixedly connected with an L-shaped tooth plate 75, as shown in FIG. Figure 4 As shown, the L-shaped toothed plate 75 is located at the bottom of the third bracket 71, and a moving groove for the L-shaped toothed plate 75 to move is opened at the bottom of the third bracket 71. A first gear 76 is rotatably connected to the surface of the rotating shaft, and one side of the first gear 76 is fixedly connected to the first bracket 412. When the L-shaped toothed plate 75 moves to one side of the first gear 76, it can mesh with it.

[0057] When the B driving member 73 drives the fourth bracket 72 to move toward the center of the annular end cover 100, the arc-shaped inner support plate 3 first moves along the radial direction of the annular end cover 100. When the L-shaped tooth plate 75 engages with the first gear 76, it reaches the third position. Since the first gear 76 is fixed, the L-shaped tooth plate 75 will rotate along the outer side of the first gear 76, thereby driving the third bracket 71 and the fourth bracket 72 to rotate synchronously, so that the arc-shaped inner support plate 3 rotates to the desired second position. It should be noted that the length of the fifth bracket 74 is smaller than the inner diameter of the annular end cover 100. In this way, the arc-shaped inner support plate 3 can be moved in a manner of first translation and then rotation. During translation, the arc-shaped inner support plate 3 can be radially away from the inner wall of the cylinder 200, giving it the space required for subsequent rotation.

[0058] In one embodiment of the present invention, the arc-shaped inner support plate 3 is detachably mounted on one side of the slewing mechanism 7 to facilitate replacement of different arc-shaped inner support plates 3. The detachable manner is the prior art, such as bolt fixing, etc., which will not be described in detail here. It is worth mentioning that in order to make the side of the arc-shaped inner support plate 3 horizontal after installation, the installation portion of the arc-shaped inner support plate 3 and the fourth bracket 72 is provided with a plug-in component, such as Figure 4 As shown, the plug-in component includes a U-shaped plate 77, a slot is provided on one side of the U-shaped plate 77, and a plug-in plate is fixedly connected to one side of the arc-shaped inner support plate 3. During installation, the plug-in plate is aligned with the slot and inserted and then fixed.

[0059] In one embodiment of the present invention, since the cylinder 200 is formed by bending a sheet metal part, the degree of bending often has a certain slight difference. For the cylinder 200 with a relatively large bending degree, during the cooperation process between the arc-shaped inner support plate 3 and the outer extrusion member 4, a slight arch phenomenon will appear at the welding part ( Figure 8 The position indicated by the black arrow in the figure is mainly due to the large degree of inward bending of the cylinder 200. The extrusion force of the extrusion end 41 alone cannot make it fit well on the surface of the arc-shaped inner support plate 3 in the opposite direction of its inward bending. Therefore, a method for solving this problem is provided, that is, a top wheel 31 is installed on the side of the arc-shaped inner support plate 3 close to its rotation direction, wherein the distance between the top wheel 31 and the center of the arc-shaped inner support plate 3 is greater than the diameter of the arc-shaped inner support plate 3, as shown in FIG. Fig. 9 As shown, the top wheel 31 provides a force opposite to the inner bending direction of the cylinder 200 to avoid a slight arching phenomenon at the contact part between the cylinder 200 and the arc-shaped inner support plate 3;

[0060] In one embodiment of the present invention, a plurality of rollers 32 are installed on the side where the arc-shaped inner support plate 3 contacts the cylinder 200. It should be noted that the plurality of rollers 32 are on the same circle and coincide with the center of the arc-shaped inner support plate 3 to reduce the friction between the arc-shaped inner support plate 3 and the cylinder 200 during relative movement. It should be understood that for the installed top wheel 31, the distance between the top wheel 31 and the center of the arc-shaped inner support plate 3 is greater than the radius of the circle on which each roller 32 is located. Fig.10 As shown, at least one arrangement mode of the roller 32 is provided.

[0061] In one embodiment of the present invention, the driving mechanism 5 includes a first driving member and a second driving member, which are respectively used to drive the rotary mechanism 7 and the outer extrusion member 4 to rotate;

[0062] In one embodiment of the present invention, the first driving member includes a first rotating shaft 51, which passes through the supporting mechanism 2, the central shaft 6 and the workbench 1 and rotates with the supporting mechanism 2, the central shaft 6 and the workbench 1. A first rotating drum 52 is fixedly connected to the top of the first rotating shaft 51, and the first rotating drum 52 is connected to the fourth bracket 72 or the fifth bracket 74. Figure 5 It is a schematic diagram showing that it is fixedly connected to the fifth bracket 74, and the first rotating shaft 51 is connected to a C driving member (not shown in the figure) for driving it to rotate;

[0063] In one embodiment of the present invention, the C driving member is an electric motor, a hydraulic motor or a pneumatic motor, and the output end of the electric motor, the output end of the hydraulic motor or the output end of the pneumatic motor is connected to the first rotating shaft 51;

[0064] In one embodiment of the present invention, the second driving member includes a second rotating shaft 53, the second rotating shaft 53 is sleeved on the surface of the central shaft 6 and is rotatably connected to the central shaft 6, the top of the second rotating shaft 53 is connected to the first bracket 412, and the bottom of the second rotating shaft 53 is connected to a D driving member (not shown in the figure) for driving the rotation thereof. Specifically, the D driving member includes a second gear, the inner wall of the second gear is fixedly connected to the lower end of the second rotating shaft 53, one side of the second gear is meshedly connected to a third gear, and the third gear is connected to the output end of the electric motor or the output end of the hydraulic motor or the output end of the pneumatic motor;

[0065] In one embodiment of the present invention, a linkage mode between the first driving member and the second driving member is provided, that is, the second driving member is a bevel gear transmission assembly, and the second rotating shaft 53 is driven to rotate synchronously by the rotation of the first rotating shaft 51. Specifically, the bevel gear rotation assembly includes a first bevel gear 54, a second bevel gear 55 and a double-sided bevel gear 56. Figure 7As shown, the first bevel gear 54 is fixedly mounted on one end of the first rotating shaft 51, and the second bevel gear 55 is fixedly mounted on the bottom of the second rotating shaft 53. The first bevel gear 54 and the second bevel gear 55 are meshed and transmitted through a double-sided bevel gear 56. The double-sided bevel gear 56 is rotatably mounted on the workbench 1, and its function is to make the first bevel gear 54 and the second bevel gear 55 rotate at the same speed and direction.

[0066] In one embodiment of the present invention, in order to facilitate the installation of the annular end cover 100 and the cylinder 200 before welding, the first bracket 412 can be installed on the second rotating shaft 53 in a rotatable manner, such as Figure 7 As shown, the first support plate 416 and the second support plate 417 are respectively installed at the upper end and the lower end of the second rotating shaft 53, the first support plate 416 is rotatably connected to the first bracket 412, and an E driving member 418 is installed at one end of the second support plate 417, which is used to drive the first bracket 412 to rotate around the connection between it and the first support plate 416;

[0067] In one embodiment of the present invention, the E-drive member 418 is a cylinder or a hydraulic cylinder or an electric telescopic rod, the piston rod of the cylinder or the piston rod of the hydraulic cylinder or the telescopic rod of the electric telescopic rod is rotatably connected to the bottom of the first bracket 412, and the cylinder body of the cylinder or the cylinder body of the hydraulic cylinder or the cylinder body of the electric telescopic rod is rotatably installed at one end of the second support plate 417.

[0068] It should be noted that, when welding, a counterweight can be arranged on the top of the cylinder 200 to make the end face of the cylinder 200 press against the side of the annular end cover 100, and a cover is arranged on the workbench 1, and an annular baffle is arranged on the top of the cover that can rotate with the external extrusion part 4 to provide a certain dust protection and shielding effect on sputtering particles during welding.

[0069] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An alloy melting furnace welding device, comprising a workbench (1) and a welding mechanism, characterized in that: Also includes: A supporting mechanism (2) for fixing the annular end cover (100); an arc-shaped inner support plate (3) located at a first position on a side of the annular end cover (100) away from the support mechanism (2), the arc-shaped inner support plate (3) being capable of rotating around a central axis (6) of the annular end cover (100), and having a spacing between an outer side of the arc-shaped inner support plate (3) and an outer side edge of the annular end cover (100); an outer extrusion member (4) located outside the arc-shaped inner support plate (3) and in the same plane as the arc-shaped inner support plate (3), the outer extrusion member (4) being capable of rotating around the central axis (6) of the annular end cover (100) to extrude the cylinder (200) outside the arc-shaped inner support plate (3), the outer extrusion member (4) comprising at least two extrusion ends (41), an assembly station (42) being provided between two adjacent extrusion ends (41), one of the assembly stations (42) being used for installing a welding mechanism; A driving mechanism (5) for driving the arc-shaped inner support plate (3) and the outer extrusion member (4) to rotate synchronously; The welding mechanism welds the cylinder (200) and the annular end cover (100) on one side of the outer extrusion piece (4); The arc-shaped inner support plate (3) is connected to the driving mechanism (5) via a rotating mechanism (7), and the rotating mechanism (7) is used to drive the arc-shaped inner support plate (3) to move between a first position and a second position. In the second position, the projection of the arc-shaped inner support plate (3) on the plane where the annular end cover (100) is located is located inside the inner edge of the annular end cover.

2. The alloy melting furnace welding device according to claim 1, characterized in that: When the arc-shaped inner support plate (3) is located at the first position, it is concentric with the arc-shaped annular end cover (100).

3. The alloy melting furnace welding device according to claim 2, characterized in that: The arc angle of the arc-shaped inner support plate (3) is 15° to 45°.

4. The alloy melting furnace welding device according to claim 1, characterized in that: The supporting mechanism (2) is a four-jaw self-centering chuck, which is mounted on the workbench (1) via a center shaft (6).

5. The alloy melting furnace welding device according to claim 1, characterized in that: The arc-shaped inner support plate (3) is detachably mounted on one side of the slewing mechanism (7).

6. The alloy melting furnace welding device according to claim 1, characterized in that: A top wheel (31) is installed on one side of the arc-shaped inner support plate (3) close to the rotation direction thereof, and the distance between the top wheel (31) and the center of the arc-shaped inner support plate (3) is greater than the diameter of the arc-shaped inner support plate (3).

7. The alloy melting furnace welding device according to claim 1, characterized in that: A plurality of rollers (32) are installed on one side of the arc-shaped inner support plate (3) close to the outer extrusion member (4).

8. The alloy melting furnace welding device according to claim 1, characterized in that: The driving mechanism (5) comprises a first driving member and a second driving member, which are respectively used to drive the rotary mechanism (7) and the outer extrusion member (4) to rotate.

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