Electron beam welding equipment

Abstract

The utility model discloses electron beam welding equipment, and relates to the technical field of machining equipment, the electron beam welding equipment is used for welding a cylindrical workpiece, the electron beam welding equipment comprises a rack used for supporting the peripheral wall of the cylindrical workpiece; the first covering piece and the second covering piece are used for being installed at the two ports of the cylindrical workpiece in a sealed mode correspondingly; the electronic gun is movably connected to the inner side of the first covering piece and used for welding the inner side of a welding seam of the cylindrical workpiece; and the vacuum mechanism is used for enabling the interior of the cylindrical workpiece to be in a vacuum state. According to the technical scheme provided by the utility model, the problem that a vacuum chamber is inconvenient to build when electron beam welding is carried out on a larger cylindrical workpiece can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining equipment, in particular to electron beam welding equipment. Background Art

[0002] Existing electron beam welding equipment requires the construction of a vacuum chamber when welding a workpiece to ensure the quality of the electron gun during vacuum welding. Currently, when electron beam welding is performed on larger cylindrical workpieces, a larger vacuum chamber needs to be built. However, there are problems in building a vacuum chamber, such as high construction cost and high difficulty. Utility Model Content

[0003] The main purpose of the utility model is to provide an electron beam welding device, aiming to solve the problem that a vacuum chamber is inconvenient to build when electron beam welding is performed on a larger cylindrical workpiece.

[0004] To achieve the above-mentioned purpose, the electron beam welding equipment proposed in the utility model is used to weld cylindrical workpieces, and the electron beam welding equipment comprises:

[0005] A frame, used to support the outer peripheral wall of the cylindrical workpiece;

[0006] A first cover member and a second cover member are respectively used to seal and install at two ends of the cylindrical workpiece;

[0007] an electron gun, movably connected to the inner side of the first cover member, for welding the inner side of the weld of the cylindrical workpiece; and

[0008] The vacuum mechanism is used to make the interior of the cylindrical workpiece a vacuum state.

[0009] In one embodiment, the frame includes a first slide rail and a first support seat, the first support seat is movably mounted on the first slide rail, and the frame supports the cylindrical workpiece through the first support seat.

[0010] In one embodiment, the first covering member and the second covering member are both fixedly connected to a second support seat, the first covering member is slidably connected to the first slide rail via the second support seat, and the second covering member is fixed to the first support seat via the second support seat.

[0011] In one embodiment, the electron beam welding equipment also includes a driving assembly installed on the first covering member, the driving assembly includes a first driving member and a second driving member, the first driving member is used to drive the electron gun to rotate, and the second driving member is used to drive the electron gun to move along the axial direction of the cylindrical workpiece.

[0012] In one embodiment, the first covering member includes a mounting plate and a turntable, the turntable is located on a side of the mounting plate close to the second covering member, the mounting plate is configured to be fixed relative to the cylindrical workpiece, the turntable is rotatably connected to the mounting plate, the first driving member is drivingly connected to the turntable, and the second driving member and the electron gun are installed on the turntable.

[0013] In one embodiment, a second slide rail extending along the axial direction of the cylindrical workpiece is installed on the side of the turntable away from the mounting plate, the electron gun is slidably connected to the second slide rail, and the second driving member is used to drive the electron gun to slide along the second slide rail.

[0014] In one embodiment, one end of the second slide rail away from the turntable is connected to the second covering member;

[0015] Alternatively, the electron beam welding equipment further comprises a support frame adapted to be installed in the cylindrical workpiece, the outer side of the support frame abuts against the inner circumferential wall of the cylindrical workpiece, and the support is provided with a mounting hole for the second slide rail to rotatably pass therethrough.

[0016] In one embodiment, the first cover member further comprises a mounting tube, the mounting tube is arranged between the mounting plate and the port of the cylindrical workpiece, and both ends of the mounting tube are respectively sealed and connected to the mounting plate and the cylindrical workpiece;

[0017] And / or, the mounting plate comprises a plate body and a connecting flange, the turntable is provided with a mounting shaft protrusion, and the mounting shaft protrusion is rotatably mounted on the inner periphery of the connecting flange through a bearing;

[0018] An accommodating space is formed between the plate body and the connecting flange, the first driving member is installed on the connecting flange in the accommodating space, the output end of the first driving member is penetrated through the connecting flange, and the output end of the first driving member is fixedly connected to a driving wheel;

[0019] The turntable comprises a disk body and a transmission wheel, wherein the transmission wheel is fixedly connected to a side of the disk body close to the connection flange, the mounting shaft is convexly arranged on the transmission wheel, and the second driving member and the electron gun are mounted on a side of the disk body away from the connection flange;

[0020] The driving wheel is drivingly connected to the transmission wheel, and the outer diameter of the driving wheel is smaller than the outer diameter of the transmission wheel.

[0021] In one embodiment, the vacuum mechanism includes a sealing device and a vacuum pumping device, wherein the sealing device is used to seal the outside of the weld of the cylindrical workpiece, and the vacuum pumping device is connected to the second covering member and communicated with the internal space of the cylindrical workpiece.

[0022] In one embodiment, the sealing device comprises a mounting member and two sealing members, the mounting member is formed with two mounting grooves opening toward the cylindrical workpiece, one sealing member is correspondingly mounted in one of the mounting grooves, an inflatable inner cavity is provided in the sealing member, and the two sealing members are respectively arranged on both sides of the weld of the cylindrical workpiece;

[0023] The sealing member is in the shape of a strip and is used to seal the vertical seam of the cylindrical workpiece;

[0024] Alternatively, the mounting member and the sealing member are annular and are sleeved outside the cylindrical workpiece to seal the annular seam of the cylindrical workpiece. The mounting member is also provided with a plurality of first abutment members and a plurality of second abutment members, and the plurality of first abutment members and the plurality of second abutment members are alternately distributed along the circumference of the mounting member. The first abutment member is fixed relative to the mounting member, and the first abutment member is provided with a ball, which abuts against the cylindrical workpiece through the ball, and the second abutment member is movably connected to the mounting member in the radial direction of the cylindrical workpiece.

[0025] The technical solution of the utility model adopts a first cover member and a second cover member to seal the two ends of the cylindrical workpiece, and then makes the interior of the cylindrical workpiece a vacuum state through a vacuum mechanism. At this time, an electron gun placed inside the cylindrical workpiece welds the weld seam of the cylindrical workpiece. When the present application performs electron beam welding on the cylindrical workpiece, there is no need to build a vacuum chamber outside the cylindrical workpiece. It is only necessary to form a vacuum structure inside the cylindrical workpiece, and the electron gun completes the welding inside the cylindrical workpiece. The welding quality of the electron beam welding can also be guaranteed, and the cost of building the vacuum chamber can be reduced, thereby solving the technical problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 A schematic structural diagram of an embodiment of an electron beam welding device provided by the utility model;

[0028] Figure 2 for Figure 1 Schematic diagram of some structures in;

[0029] Figure 3 for Figure 2 A schematic diagram of the structure of the electron beam welding equipment from another perspective;

[0030] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0031] Figure 5 for Figure 3 A schematic diagram of the structure of the mounting plate, turntable, electron gun and second slide rail in the electron beam welding equipment;

[0032] Figure 6 for Figure 5 A structural diagram from another perspective;

[0033] Figure 7 for Figure 3 Schematic diagram of the structure of the turntable, mounting shaft boss and drive assembly in the electron beam welding equipment;

[0034] Figure 8 for Figure 1 A schematic diagram of another part of the structure;

[0035] Fig. 9 for Figure 8 The enlarged view of point B in the middle;

[0036] Fig.10 for Figure 8 Enlarged view of point C in the middle;

[0037] Fig.11 for Figure 8 Schematic diagram of the internal structure;

[0038] Fig.12 for Fig.11 The enlarged view of point D in the middle;

[0039] Fig.13 It is a structural schematic diagram of an embodiment of a second slide rail and a support frame in the electron beam welding equipment provided by the utility model;

[0040] Fig.14 for Fig.13 A schematic structural diagram of an embodiment of a middle support frame.

[0041] Description of Figure Numbers:

[0042] 100. Workpiece;

[0043] 200, rack; 210, first support seat; 220, first slide rail;

[0044] 300, first cover member; 310, mounting plate; 311, plate body; 312, connecting flange; 313, accommodating space; 320, turntable; 321, disk body; 322, rotating wheel; 330, mounting cylinder; 340, mounting shaft protrusion;

[0045] 400, second cover member;

[0046] 500, electron gun;

[0047] 600, driving assembly; 610, first driving member; 620, second driving member; 630, second slide rail; 640, driving wheel;

[0048] 700, vacuum mechanism; 710, vacuum pumping device; 720, sealing device; 721, mounting member; 7211, mounting groove; 722, sealing member; 7221, inflatable inner cavity; 723, first abutting member; 7231, ball bearing; 724, second abutting member;

[0049] 800, second support seat;

[0050] 900, support frame; 910, mounting hole; 920, outer frame; 930, inner ring; 940, support bar.

[0051] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0052] 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 of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0053] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0054] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0055] The utility model provides an electron beam welding device for welding a cylindrical workpiece 100, wherein the cylindrical workpiece 100 in the present application may be a circular cylindrical workpiece 100 (see Figure 1 ), triangular cylindrical workpiece 100, polygonal cylindrical workpiece 100, etc.; wherein the cylindrical workpiece 100 is a cylindrical workpiece 100 formed by splicing two parts, wherein the two spliced ​​parts can be cylindrical structures or non-cylindrical structures. When the two spliced ​​parts are cylindrical structures (see Figure 1 , Fig.10 ), the electron beam welding equipment can weld the gap formed at the joint of two parts of the cylindrical structure, that is, circumferential seam welding. When the two parts to be spliced ​​are non-cylindrical structures, and a cylindrical structure is formed after splicing, at this time, the electron beam welding equipment can weld the gap formed at the joint of the two non-cylindrical structures. When the gap formed at the joint of the two non-cylindrical structures is a straight line, the electron beam welding equipment can perform straight line welding, that is, vertical seam welding. The specific vertical seam can also be a weld formed by winding a workpiece. When the gap formed at the joint of the two parts of the cylindrical structure is non-straight, the electron beam welding equipment can perform welding along the gap during welding.

[0056] See also Figure 1 , Figure 2 In one embodiment of the present invention, the electron beam welding device comprises:

[0057] The frame 200 is used to support the outer peripheral wall of the cylindrical workpiece 100 .

[0058] The first covering member 300 and the second covering member 400 are respectively used for sealing and installing on the two ends of the cylindrical workpiece 100, wherein the first covering member 300 and the second covering member 400 are respectively abutted against the two ends of the cylindrical workpiece 100 to seal the two ends of the cylindrical workpiece 100 so as to form a closed space inside the cylindrical workpiece 100. When the cylindrical workpiece 100 is installed, after the cylindrical workpiece 100 is placed on the frame 200, the first covering member 300 moves toward the cylindrical workpiece 100 to push the cylindrical workpiece 100 through the first covering member 300 until the other end of the cylindrical workpiece 100 abuts against the second covering member 400. In this way, the two ends of the cylindrical workpiece 100 are sealed by the first covering member 300 and the second covering member 400.

[0059] The electron gun 500 can be movably connected to the inner side of the first covering member 300 for welding the inner side of the weld of the cylindrical workpiece 100. At this time, when the first covering member 300 seals the end of the cylindrical workpiece 100, since the electron gun 500 is arranged on the inner side of the first covering member 300, the electron gun 500 will be placed inside the cylindrical workpiece 100 to weld the weld from the inside of the cylindrical workpiece 100.

[0060] The vacuum mechanism 700 is used to make the interior of the cylindrical workpiece 100 a vacuum state, wherein when the electron gun 500 is welding the weld seam, it is necessary to first evacuate the interior of the cylindrical workpiece 100 to make the interior of the cylindrical workpiece 100 a vacuum state. In this way, when the electron gun 500 is welding the weld seam, the quality of welding can be effectively guaranteed. Furthermore, in order to facilitate the vacuum state of the interior of the cylindrical workpiece 100, it can first perform a pre-sealing treatment on the splicing portion of the cylindrical workpiece 100, wherein the pre-sealing treatment can be performed by pre-welding, or the splicing portion of the cylindrical workpiece 100 can be pre-sealed by using other sealing equipment. In this embodiment, the two ends of the cylindrical workpiece 100 are sealed by using the first cover member 300 and the second cover member 400, and then the interior of the cylindrical workpiece 100 is made into a vacuum state by the vacuum mechanism 700. At this time, the electron gun 500 placed inside the cylindrical workpiece 100 welds the weld seam of the cylindrical workpiece 100. When the present application performs electron beam welding on the cylindrical workpiece 100, there is no need to build a vacuum chamber outside the cylindrical workpiece 100. It is only necessary to form a vacuum structure inside the cylindrical workpiece 100, and the electron gun 500 completes the welding inside the cylindrical workpiece 100. The welding quality of the electron beam welding can also be guaranteed, and the cost of building a vacuum chamber can be reduced, thereby solving the technical problems existing in the prior art.

[0061] In one embodiment, see Figure 1 , Figure 2 , Figure 3 , Figure 4The frame 200 includes a first slide rail 220 and a first support seat 210. The first support seat 210 is movably installed on the first slide rail 220. The frame 200 supports the cylindrical workpiece 100 through the first support seat 210. In this embodiment, the cylindrical workpiece 100 can be supported by the first support seat 210. Since the first support seat 210 is movably installed on the first slide rail 220, when the first support seat 210 moves on the first slide rail 220, it can drive the cylindrical workpiece 100 to move on the first slide rail 220, so that the cylindrical workpiece 100 can adjust its position on the frame 200.

[0062] In one embodiment, see Figure 1 , Figure 2 , the first cover member 300 and the second cover member 400 are both fixedly connected with a second support seat 800, the first cover member 300 is slidably connected to the first slide rail 220 through the second support seat 800, and the second cover member 400 is fixedly arranged on the first support seat 210 through the second support seat 800. In this embodiment, the first cover member 300 and the corresponding second support seat 800 move to an avoidance position, wherein the avoidance position is a position where the cylindrical workpiece 100 can be placed between the first cover member 300 and the second cover member 400. Further, according to the structure of the cylindrical workpiece 100, the avoidance position moved by the first cover member 300 can be changed. After the cylindrical workpiece 100 is placed on the frame 200, the second support seat 800 corresponding to the first cover member 300 moves toward the cylindrical workpiece 100 to push the cylindrical workpiece 100 through the first cover member 300 until the other end of the cylindrical workpiece 100 abuts against the second cover member 400. Meanwhile, in the present embodiment, a positioning member (not shown) is provided on the second support seat 800 slidably mounted on the first slide rail 220. After the second support seat 800 is adjusted to a suitable position, the second support seat is fixed to the first slide rail 220 by the positioning member. In the present embodiment, the positioning member fixes the second support seat 800 to the first slide rail by increasing the friction between itself and the first slide rail. In the present embodiment, the positioning member increases the friction between itself and the first slide rail in a manner not specifically limited. The positioning member can be configured as a bolt, which is tightened to abut against the first slide rail, and the friction between the bolt and the first slide rail is increased to achieve positioning of the second support seat on the first slide rail.

[0063] In one embodiment, see Figure 5 , Figure 6 , Figure 7, the electron beam welding equipment driving component 600 is installed on the first covering member 300 and is driven and connected to the electron gun 500. Further, since the driving component 600 is installed on the first covering member 300, when the first covering member 300 seals the end of the cylindrical workpiece 100, part of the structure or the whole structure of the driving component 600 can be placed in the cylindrical workpiece 100. At this time, the driving component 600 can drive the electron gun 500 to move inside the cylindrical workpiece 100 so that the electron gun 500 can weld different welds. In order to be able to drive the electron gun 500 to move in the cylindrical workpiece 100, the driving component 600 can adopt the following structure, wherein the driving component 600 includes a first driving member 610 and a second driving member 620, wherein the first driving member 610 is used to drive the electron gun 500 to rotate, and the second driving member 620 is used to drive the electron gun 500 to move along the axial direction of the cylindrical workpiece 100. In this embodiment, the first driving member 610 is configured as a driving motor, wherein the driving motor can directly drive the electron gun 500 to rotate, or can indirectly drive the electron gun 500 to rotate. The second driving member 620 can be configured as a linear driving structure to drive the electron gun 500 to move along the axial direction of the cylindrical workpiece 100, wherein the specific structure of the linear driving structure is not limited, and it can be a linear cylinder assembly, or a linear electric telescopic assembly. The second driving member 620 can also be configured as a driving motor, and cooperate with other linear guide structures to drive the electron gun 500 to move along the axial direction of the cylindrical workpiece 100. In this embodiment, when the driving motor directly drives the electron gun 500 to rotate, the electron gun 500 is directly installed at the output end of the driving motor, and the output end of the driving motor directly drives the electron gun 500 to rotate. In this embodiment, when the driving motor indirectly drives the electron gun 500 to rotate, the electron gun 500 is installed on the second driving member 620, and the second driving member 620 is installed at the output end of the driving motor. At this time, the driving motor drives the second driving member 620 to rotate, so that the second driving member 620 indirectly drives the electron gun 500 to rotate.

[0064] In one embodiment, see Figure 5 , Figure 6 , Figure 7The first covering member 300 includes a mounting plate 310 and a turntable 320. The turntable 320 is located on a side of the mounting plate 310 close to the second covering member 400. The mounting plate 310 is configured to be fixed relative to the cylindrical workpiece 100. The turntable 320 is rotatably connected to the mounting plate 310. The first driving member 610 is drivingly connected to the turntable 320. The second driving member 620 and the electron gun 500 are installed on the turntable 320. In this embodiment, when the first driving member 610 is configured as a driving motor, the first driving member 610 drives the turntable 320 to rotate. Since the second driving member 620 and the electron gun 500 are both installed on the turntable 320, the turntable 320 can drive the electron gun 500 and the second driving member 620 to rotate when rotating. When the electron gun 500 needs to move axially along the cylindrical workpiece 100, the electron gun 500 can be driven by the second driving member 620 to move axially along the cylindrical workpiece 100. In this embodiment, the cylindrical workpiece 100 may abut against the mounting plate 310 , so that the mounting plate 310 seals the port of the cylindrical workpiece 100 .

[0065] In one embodiment, see Figure 5 , Figure 6 , Figure 7 A second slide rail 630 extending along the axial direction of the cylindrical workpiece 100 is installed on the side of the turntable 320 away from the mounting plate 310, and the electron gun 500 is slidably connected to the second slide rail 630. The second driving member 620 is used to drive the electron gun 500 to slide along the second slide rail 630. In this embodiment, the second driving member 620 is configured as a driving motor and a belt transmission module, wherein the belt transmission module is arranged in the second slide rail 630 and connected to the electron gun 500. The driving motor drives the belt transmission module so that the belt transmission module drives the electron gun 500 to slide along the second slide rail 630, so as to achieve the purpose of axial movement of the electron gun 500 along the cylindrical workpiece 100.

[0066] In one embodiment, in order to make the end of the second slide rail 630 away from the turntable 320 more stable during rotation, the end of the second slide rail 630 away from the turntable 320 is connected to the second cover member 400, wherein the second slide rail 630 and the second cover member 400 are rotatably plugged, that is, the movement of the second slide rail 630 away from the turntable 320 can be inserted into the second cover member 400, and can rotate relative to the second cover member 400. In this way, under the action of the second cover member 400, the end of the second slide rail 630 away from the turntable 320 can be supported, so that the end of the second slide rail 630 away from the turntable 320 during rotation is more stable, thereby ensuring the stability of the welding trajectory of the electron gun 500.

[0067] In one embodiment, see Fig.13, Fig.14 In order to make the end of the second slide rail 630 away from the turntable 320 more stable during rotation, the following mechanism can also be used. The electron beam welding equipment also includes a support frame 900, and the support frame 900 is adapted to be installed in the cylindrical workpiece 100. The outer side of the support frame 900 abuts against the inner wall of the cylindrical workpiece 100. The support is provided with a mounting hole 910 for the second slide rail 630 to be rotatably passed through. In this embodiment, the support frame 900 can adopt the following structure, wherein the support frame 900 includes an outer frame 920 and an inner ring 930 disposed in the outer frame 920, wherein the outer frame 920 and the inner ring 930 are fixed by a support bar 940, the inner ring 930 is configured as a mounting hole 910, and the second slide rail 630 is rotatably connected to the mounting hole 910. When in use, the outer frame 920 is fixed to the inner wall of the cylindrical workpiece 100, wherein the outer frame 920 and the inner wall of the cylindrical workpiece 100 are tightly abutted against each other, and the outer frame 920 can be fixed to the inner wall of the cylindrical workpiece 100 by abutting against the inner wall of the cylindrical workpiece 100 by screws, wherein the screws are rotatably mounted on the outer frame 920. Specifically, a guide groove is provided on the inner wall of the inner ring 930, and the second slide rail 630 is slidably disposed in the guide groove. Specifically, a sliding shaft is screwed to the end of the second slide rail 630 away from the turntable 320, wherein the sliding shaft is slidably disposed in the guide groove. In this embodiment, the outer frame 920 of the support frame 900 abuts against the inner wall of the cylindrical workpiece 100. In order to further improve the use effect of the support frame 900 of the present application, support frames 900 of different structures can be selected for cylindrical workpieces 100 of different structures.

[0068] In one embodiment, see Figure 2 , Figure 3 The first covering member 300 also includes a mounting tube 330, and the mounting tube 330 is arranged between the mounting plate 310 and the port of the cylindrical workpiece 100. The two ends of the mounting tube 330 are respectively sealed and connected to the mounting plate 310 and the cylindrical workpiece 100. In this embodiment, under the action of the mounting tube 330, the first driving member 610 can be placed in the mounting tube 330, so that the electron gun 500 can pass through the end connected to the cylindrical workpiece 100 from the mounting tube 330 when moving, and move to the second covering member 400 when moving, so that it is convenient for the electron gun 500 to perform vertical seam welding or curved seam welding on the cylindrical workpiece 100, so that the electron gun 500 can weld the position of the cylindrical workpiece 100 close to the port.

[0069] In one embodiment, see Figure 5 , Figure 6 , Figure 7The mounting plate 310 includes a plate body 311 and a connecting flange 312, the turntable 320 is provided with a mounting shaft protrusion 340, and the mounting shaft protrusion 340 is rotatably mounted on the inner periphery of the connecting flange 312 through a bearing, so that the turntable 320 can rotate relative to the connecting flange 312; an accommodating space 313 is formed between the plate body 311 and the connecting flange 312, and the first driving member 610 is installed on the connecting flange 312 in the accommodating space 313, so that the installation of the first driving member 610 can be facilitated, and the output end of the first driving member 610 is penetrated through the connecting flange 312, and the output end of the first driving member 610 is fixedly connected to a driving wheel 640, wherein the first driving member 610 is configured as a driving motor. The turntable 320 includes a disk body 321 and a transmission wheel, wherein the transmission wheel is fixedly connected to a side of the disk body 321 close to the connection flange 312, the mounting shaft protrusion 340 is arranged on the transmission wheel, and the second driving member 620 and the electron gun 500 are installed on a side of the disk body 321 away from the connection flange 312. The driving wheel 640 is connected to the transmission wheel by transmission, and the outer diameter of the driving wheel 640 is smaller than the outer diameter of the transmission wheel. In this embodiment, the driving wheel 640 and the transmission wheel can be indirectly transmitted or directly transmitted. When the driving wheel 640 and the transmission wheel are directly driven, the driving wheel 640 is in direct contact with the transmission wheel. When the driving wheel 640 and the transmission wheel are indirectly driven, the driving wheel 640 indirectly transmits the driving wheel to the transmission wheel through other structures, wherein the other structures include a transmission belt, a chain, etc. In this embodiment, since the outer diameter of the driving wheel 640 is smaller than the outer diameter of the transmission wheel, the driving wheel 640 can play a role of a small leading a large one when driving the transmission wheel to rotate, thereby achieving the purpose of reducing speed and increasing torque, thereby making the electron gun 500 more stable when rotating, and making the electron gun 500 more stable when welding the weld.

[0070] In one embodiment, see Figure 1 , Figure 8 The vacuum mechanism 700 includes a sealing device 720 and a vacuum device 710. The sealing device 720 is used to seal the outer side of the weld of the cylindrical workpiece 100. The vacuum device 710 is connected to the second cover 400 and communicates with the internal space of the cylindrical workpiece 100. In this embodiment, the sealing device 720 can be configured as a welding mark produced by pre-welding. After the sealing device 720 seals the outer side of the weld of the cylindrical workpiece 100, the vacuum device 710 vacuumizes the inside of the cylindrical workpiece 100.

[0071] In one embodiment, see Figures 9 to 12The sealing device 720 can adopt the following structure, the sealing device 720 includes a mounting member 721 and two sealing members 722, the mounting member 721 is formed with two mounting grooves 7211 opening toward the cylindrical workpiece 100, one sealing member 722 is correspondingly mounted in one mounting groove 7211, the sealing member 722 is provided with an inflatable inner cavity 7221, and the two sealing members 722 are respectively arranged on both sides of the weld of the cylindrical workpiece 100. In this embodiment, by inflating the inside of the sealing member 722, the inside of the sealing member 722 is expanded, so that the sealing member 722 and the mounting member 721 form a closed space outside the weld, thereby sealing the weld. Further, in this embodiment, the mounting member 721 is provided with an avoidance groove corresponding to the weld to seal the welding position to avoid the situation that the mounting member 721 is fixed to the outside of the cylindrical workpiece 100 during the welding process, wherein the two sealing members 722 are arranged on both sides of the avoidance groove.

[0072] In one embodiment, see Figures 9 to 12When the weld is an annular seam, the mounting member 721 and the sealing member 722 are annular and are sleeved outside the cylindrical workpiece 100 to seal the annular seam of the cylindrical workpiece 100. The mounting member 721 is also provided with a plurality of first abutting members 723 and a plurality of second abutting members 724. The plurality of first abutting members 723 and the plurality of second abutting members 724 are alternately spaced along the circumference of the mounting member 721. The first abutting members 723 are fixed relative to the mounting member 721, and the The first abutting member 723 is provided with a ball 7231, which abuts against the cylindrical workpiece 100 through the ball 7231. The second abutting member 724 is movably connected to the mounting member 721 in the radial direction of the cylindrical workpiece 100. In this embodiment, the mounting member 721 can move along the axial direction of the cylindrical workpiece 100 outside the cylindrical workpiece 100 under the action of the first abutting member 723, so that the mounting member 721 can correspond to the weld of the cylindrical workpiece 100, so that the two sealing members 722 can The second abutting member 724 is able to be located on both sides of the weld. After the two sealing members 722 are located on both sides of the weld, the second abutting member 724 is abutted against the outside of the cylindrical workpiece 100, so that the mounting member 721 is fixed to a specified position outside the cylindrical workpiece 100. In this embodiment, the second abutting member 724 is configured as a bolt, wherein the bolt and the mounting member 721 are threadedly matched. Since the mounting member 721 is configured as an annular structure, the plurality of second abutting members 724 are abutted against the outside of the cylindrical workpiece 100, and the cylindrical workpiece 100 can be fixed under the action of friction. The mounting member 721 is fixedly mounted on the outside of the cylindrical workpiece 100, and when the second abutting member 724 abuts against the outside of the cylindrical workpiece 100, the ball 7231 on the first abutting member 723 will leave the outside of the cylindrical workpiece 100, and at this time, the sealing member 722 is inflated to expand and abut against the outside of the cylindrical workpiece 100, and against the inner wall of the mounting groove 7211, so that a closed space is formed between the sealing member 722 and the mounting member 721 to seal the outside of the cylindrical workpiece 100. In this embodiment, the sealing member 722 can be configured as heat-resistant rubber, and the heat-resistant rubber is inflated to expand the heat-resistant rubber, so that the heat-resistant rubber is in a sealed state with the outside of the cylindrical workpiece 100 and the inner wall of the mounting groove 7211.

[0073] In one embodiment, the seal is in a strip shape (not shown) and is used to seal the vertical seam of the cylindrical workpiece 100. In this embodiment, when the seal is in a strip shape, when the seal needs to be fixed to the outside of the cylindrical workpiece 100, the seal can be fixed to the outside of the cylindrical workpiece 100 by a structure such as a clamp.

[0074] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electron beam welding device, characterized in that: Used for welding cylindrical workpieces, the electron beam welding equipment comprises: A frame, used to support the outer peripheral wall of the cylindrical workpiece; A first cover member and a second cover member are respectively used to seal and install at two ends of the cylindrical workpiece; an electron gun, movably connected to the inner side of the first cover member, for welding the inner side of the weld of the cylindrical workpiece; and The vacuum mechanism is used to make the interior of the cylindrical workpiece a vacuum state.

2. The electron beam welding device according to claim 1, characterized in that The frame includes a first slide rail and a first support seat, the first support seat is movably mounted on the first slide rail, and the frame supports the cylindrical workpiece through the first support seat.

3. The electron beam welding device according to claim 2, characterized in that The first covering member and the second covering member are both fixedly connected to a second supporting seat, the first covering member is slidably connected to the first slide rail via the second supporting seat, and the second covering member is fixed to the first supporting seat via the second supporting seat.

4. The electron beam welding equipment according to claim 1, characterized in that The electron beam welding equipment also includes a driving assembly installed on the first covering member, the driving assembly includes a first driving member and a second driving member, the first driving member is used to drive the electron gun to rotate, and the second driving member is used to drive the electron gun to move along the axial direction of the cylindrical workpiece.

5. The electron beam welding equipment according to claim 4, characterized in that The first covering member includes a mounting plate and a turntable, wherein the turntable is located on a side of the mounting plate close to the second covering member, the mounting plate is configured to be fixed relative to the cylindrical workpiece, the turntable is rotatably connected to the mounting plate, the first driving member is drivingly connected to the turntable, and the second driving member and the electron gun are installed on the turntable.

6. The electron beam welding equipment according to claim 5, characterized in that A second slide rail extending along the axial direction of the cylindrical workpiece is installed on the side of the turntable away from the mounting plate. The electron gun is slidably connected to the second slide rail. The second driving member is used to drive the electron gun to slide along the second slide rail.

7. The electron beam welding equipment according to claim 6, characterized in that One end of the second slide rail away from the turntable is connected to the second covering member; Alternatively, the electron beam welding equipment further comprises a support frame adapted to be installed in the cylindrical workpiece, the outer side of the support frame abuts against the inner circumferential wall of the cylindrical workpiece, and the support is provided with a mounting hole for the second slide rail to rotatably pass therethrough.

8. The electron beam welding equipment according to claim 5, characterized in that The first cover member further comprises a mounting tube, the mounting tube is arranged between the mounting plate and the port of the cylindrical workpiece, and the two ends of the mounting tube are respectively sealed and connected to the mounting plate and the cylindrical workpiece; And / or, the mounting plate comprises a plate body and a connecting flange, the turntable is provided with a mounting shaft protrusion, and the mounting shaft protrusion is rotatably mounted on the inner periphery of the connecting flange through a bearing; An accommodating space is formed between the plate body and the connecting flange, the first driving member is installed on the connecting flange in the accommodating space, the output end of the first driving member is penetrated through the connecting flange, and the output end of the first driving member is fixedly connected to a driving wheel; The turntable comprises a disk body and a transmission wheel, wherein the transmission wheel is fixedly connected to a side of the disk body close to the connection flange, the mounting shaft is convexly arranged on the transmission wheel, and the second driving member and the electron gun are mounted on a side of the disk body away from the connection flange; The driving wheel is drivingly connected to the transmission wheel, and the outer diameter of the driving wheel is smaller than the outer diameter of the transmission wheel.

9. The electron beam welding equipment according to any one of claims 1 to 8, characterized in that The vacuum mechanism comprises a sealing device and a vacuum pumping device. The sealing device is used to seal the outside of the weld of the cylindrical workpiece. The vacuum pumping device is connected to the second covering member and communicated with the internal space of the cylindrical workpiece.

10. The electron beam welding device according to claim 9, characterized in that The sealing device comprises a mounting member and two sealing members, wherein the mounting member is formed with two mounting grooves opening toward the cylindrical workpiece, one sealing member is correspondingly mounted in one of the mounting grooves, an inflatable inner cavity is provided in the sealing member, and the two sealing members are respectively arranged on both sides of the weld of the cylindrical workpiece; The sealing member is in the shape of a strip and is used to seal the vertical seam of the cylindrical workpiece; Alternatively, the mounting member and the sealing member are annular and are sleeved outside the cylindrical workpiece to seal the annular seam of the cylindrical workpiece. The mounting member is also provided with a plurality of first abutment members and a plurality of second abutment members, and the plurality of first abutment members and the plurality of second abutment members are alternately distributed along the circumference of the mounting member. The first abutment member is fixed relative to the mounting member, and the first abutment member is provided with a ball, which abuts against the cylindrical workpiece through the ball, and the second abutment member is movably connected to the mounting member in the radial direction of the cylindrical workpiece.

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