Vacuum electron beam welding device

Abstract

The invention belongs to the field of vacuum electron beam welding, and particularly relates to a vacuum electron beam welding device which comprises a vacuum box, a vacuum pump is fixedly installed on one side of the vacuum box, one end of the vacuum pump is fixedly connected with a conveying pipe, and an electron gun is fixedly installed at the top of an inner cavity of the vacuum box. A welding table is fixedly connected to the bottom of an inner cavity of the vacuum box, and a pressing mechanism is arranged in an inner cavity of the welding table. The pressing mechanism comprises two sliding rails, a mounting groove is formed in the bottom of an inner cavity of the welding table, an electric push rod is fixedly mounted on the inner wall of one side of the mounting groove, and the output end of the electric push rod is fixedly connected with a push block. Through the cooperative use of the devices, the occurrence of welding defects such as pseudo soldering and misalignment is reduced, the repair rate is reduced, the stability and reliability of the welding quality are improved, and the process requirements of high-precision and large-batch continuous production are met.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of vacuum electron beam welding, and particularly relates to a vacuum electron beam welding device. BACKGROUND

[0002] Vacuum electron beam welding is an advanced fusion welding technology which uses a focused high-speed electron beam as a high-energy-density heat source to bombard the joint of a workpiece in a high-vacuum environment, so that the metal is rapidly melted and solidified locally, thereby realizing firm connection of materials. The working principle is that electrons are emitted from a cathode in an electron gun, accelerated to a very high speed (up to 30%-80% of the speed of light) under the action of a high-voltage electric field (usually 30-150 kV), and then focused into a small high-energy electron beam stream via an electromagnetic lens. When the beam stream hits the surface of the workpiece, the kinetic energy is instantaneously converted into heat energy, generating a high temperature of thousands of degrees Celsius, which is enough to melt most metals.

[0003] The existing vacuum electron beam welding device generally uses a clamp with a two-side pressing structure to clamp the workpiece during clamping and positioning. The workpiece is clamped only through the left and right or front and rear edges, so that the fixed points are unevenly distributed, the four corner regions of the workpiece cannot be effectively constrained, and under the action of the high-energy electron beam, local rapid heating and cooling easily cause thermal stress concentration, the workpiece is warped, deviated or vibrated, the straightness, penetration consistency and joint strength of the weld are seriously affected, the welding efficiency is reduced, the rework rate is increased, and the quality stability demand of high-precision and large-batch continuous production cannot be met.

[0004] Therefore, the application provides a vacuum electron beam welding device to solve the above problems. SUMMARY

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem in the background art.

[0006] The technical scheme adopted by the application to solve the technical problems is that the vacuum electron beam welding device comprises a vacuum box, one side of the vacuum box is fixedly provided with a vacuum pump, one end of the vacuum pump is fixedly connected with a transmission pipe, the inner cavity top of the vacuum box is fixedly provided with an electron gun, the inner cavity bottom of the vacuum box is fixedly connected with a welding table, and the inner cavity of the welding table is provided with a pressing mechanism.

[0007] The pressing mechanism comprises slide rails, the slide rails are provided as two, an installation groove is arranged on the bottom of the inner cavity of the welding table, an electric push rod is fixedly installed on the inner wall of one side of the installation groove, a push block is fixedly connected to the output end of the electric push rod, a plurality of through holes are arranged on one side of the slide rail, two L-shaped slides are slidably connected to the inner cavity of the slide rail, a jack is arranged on one side of the L-shaped slide, a threaded rod is arranged above the L-shaped slide, a pressing plate is arranged below the L-shaped slide, and two guide rods are arranged above the L-shaped slide.

[0008] As a preferred technical scheme of the present application, one end of the transmission pipe is fixedly connected to one side of the adjacent vacuum box, the inner cavity of the transmission pipe is in communication with the inner cavity of the vacuum box, the top of the push block is fixedly connected to the bottom of the corresponding slide rail, and the outer surface of the push block is slidably connected to the inner cavity of the installation groove.

[0009] As a preferred technical scheme of the present application, the top end of the threaded rod is fixedly connected with a rotating handle, the bottom of the threaded rod is rotatably connected with the top of the adjacent pressing plate through a threaded hole penetrating through the top of the corresponding L-shaped slide, and the bottom end of the guide rod is fixedly connected with the top of the adjacent pressing plate through a threaded hole penetrating through the top of the corresponding L-shaped slide.

[0010] As a preferred technical scheme of the present application, one side of the slide rail is provided with a fixing mechanism; the fixing mechanism comprises an installation box, the inner cavity of the installation box is provided with a plug rod, the outer circle of the plug rod is sleeved with a baffle, the outer circle of the plug rod is sleeved with a spring, one side of the slide rail is provided with a sliding groove, and the sliding groove is slidably connected with a sliding block.

[0011] As a preferred technical scheme of the present application, the installation box is provided as a plurality of, one side of the sliding block is fixedly connected with the side wall of the corresponding installation box, one end of the plug rod penetrates the inner wall of the adjacent installation box and the inner cavity of the through hole and is inserted into the inner cavity of the corresponding jack in sequence, and the other end of the plug rod is fixedly connected with a handle through the inner wall of the corresponding installation box.

[0012] As a preferred technical scheme of the present application, one side of the vacuum box is hingedly connected with a sealing plate through a hinge, a plurality of structure grooves are arranged on one side of the sealing plate, a circular magnetic sheet is fixedly connected to the inner surface wall of the structure groove, a vertical groove is arranged on one side of the vacuum box, a magnetic strip is fixedly connected to the inner surface wall of the vertical groove, and one side of the circular magnetic sheet is magnetically attracted to one side of the adjacent magnetic strip.

[0013] The beneficial effects of the present application are as follows:

[0014] The setting of the pressing mechanism exerts a pressing force from above the workpiece, in combination with the clamping action of the two sides, forms a multi-point, multi-directional constraint on the four corner regions of the workpiece, enhances the overall stability of the workpiece during welding, effectively suppresses the workpiece warping, deviation or vibration phenomenon caused by local thermal stress concentration due to high energy density heating of the electron beam, guarantees the straightness of the weld track, the uniformity of the penetration and the mechanical properties of the joint, reduces the occurrence of welding defects such as false welding and misaligned edges, reduces the rework rate, improves the stability and reliability of the welding quality, and meets the process requirements of high-precision and large-batch continuous production.

[0015] The setting of the fixing mechanism improves the adaptability and reliability of the pressing mechanism, realizes quick locking and releasing of the L-shaped slide plate at different positions on the slide rail, is simple and convenient to operate without the need for additional tools, enables the transverse position of the pressing plate to be flexibly adjusted within a certain range according to the size and welding area of different workpieces, expands the application range of the equipment, enhances the universality of the tooling, and at the same time ensures the firmness of each locking to prevent loosening under welding vibration, further guarantees the fixing effect of the workpiece in the four corner regions, and provides a solid foundation for realizing high-quality and high-stability vacuum electron beam welding. BRIEF DESCRIPTION OF DRAWINGS

[0016] The application will be further described below in conjunction with the drawings.

[0017] Figure 1 Fig. 1 is a schematic diagram of the overall structure of a vacuum electron beam welding device;

[0018] Figure 2 Fig. 2 is a schematic diagram of the structure of an electron gun in a vacuum electron beam welding device;

[0019] Figure 3 Fig. 3 is a schematic diagram of the structure of a welding table in a vacuum electron beam welding device;

[0020] Figure 4 Fig. 4 is a schematic diagram of the structure of a mounting box in a vacuum electron beam welding device.

[0021] In the drawings: 1, vacuum box; 2, sealing plate; 3, vacuum pump; 4, transmission pipe; 5, round magnetic sheet; 6, magnetic strip; 7, welding table; 8, mounting groove; 9, electric push rod; 10, push block; 11, mounting box; 12, L-shaped slide plate; 13, slide groove; 14, slide block; 15, through hole; 16, handle; 17, insertion rod; 18, baffle; 19, spring; 20, threaded rod; 21, guide rod; 22, rotating handle; 23, pressing plate; 24, insertion hole; 25, electron gun; 26, slide rail. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments.

[0023] With reference to Figure 1 Figure 4 The present application provides two technical solutions:

[0024] Embodiment one:

[0025] A vacuum electron beam welding device, comprising a vacuum box 1, a vacuum pump 3 is fixedly installed on one side of the vacuum box 1, one end of the vacuum pump 3 is fixedly connected with a transmission pipe 4, an electron gun 25 is fixedly installed on the top of the inner cavity of the vacuum box 1, a welding table 7 is fixedly connected with the bottom of the inner cavity of the vacuum box 1, and a pressing mechanism is arranged in the inner cavity of the welding table 7.

[0026] The pressing mechanism comprises slide rails 26, the slide rails 26 are provided in two, an installation groove 8 is formed in the bottom of the inner cavity of the welding table 7, an electric push rod 9 is fixedly installed on one side inner wall of the installation groove 8, a push block 10 is fixedly connected with the output end of the electric push rod 9, a plurality of through holes 15 are formed in one side of the slide rails 26, two L-shaped sliding plates 12 are slidably connected in the inner cavity of the slide rails 26, a jack 24 is formed in one side of the L-shaped sliding plates 12, a threaded rod 20 is arranged above the L-shaped sliding plates 12, a pressing plate 23 is arranged below the L-shaped sliding plates 12, and two guide rods 21 are arranged above the L-shaped sliding plates 12.

[0027] One end of the transmission pipe 4 is fixedly connected with one side of the adjacent vacuum box 1, the inner cavity of the transmission pipe 4 is connected with the inner cavity of the vacuum box 1, the top of the push block 10 is fixedly connected with the bottom of the corresponding slide rail 26, the outer surface of the push block 10 is slidably connected with the inner cavity of the installation groove 8, the bottom of one of the slide rails 26 is fixedly connected with the inner cavity bottom of the welding table 7, the electric push rod 9 drives the push block 10 to slide smoothly in the installation groove 8 after being started, drives the slide rail 26 fixedly connected with the top thereof to move in the horizontal direction, realizes that the slide rail 26 and the slide rail 26 fixedly connected with the bottom of the other side of the welding table 7 are close to or away from each other, so as to clamp or loosen the two sides of the workpiece, and at the same time, the transmission pipe 4 serves as a gas passage between the vacuum pump 3 and the vacuum box 1, so as to ensure that the vacuum pump 3 can effectively extract the air in the vacuum box 1.

[0028] ​The top end of the threaded rod 20 is fixedly connected with a rotating handle 22, the bottom of the threaded rod 20 is rotatably connected with the top of the adjacent pressing plate 23 through a threaded hole penetrating the top of the corresponding L-shaped slide plate 12, the bottom end of the guide rod 21 is fixedly connected with the top of the adjacent pressing plate 23 through a threaded hole penetrating the top of the corresponding L-shaped slide plate 12, an operator rotates the rotating handle 22 manually to drive the threaded rod 20 to rotate, due to the threaded cooperation, the threaded rod 20 drives the pressing plate 23 to move up and down in the vertical direction, at the same time, the guide rod 21 provides linear guidance for the movement of the pressing plate 23 to prevent the rotation or deflection of the pressing plate 23 during the lifting process, so that the pressing plate 23 is stably and accurately pressed or separated from the surface of the workpiece.

[0029] Embodiment two:

[0030] One side of the sliding rail 26 is provided with a fixing mechanism; the fixing mechanism comprises a mounting box 11, the inner cavity of the mounting box 11 is provided with a plug rod 17, the outer circle of the plug rod 17 is sleeved with a baffle 18, the outer circle of the plug rod 17 is sleeved with a spring 19, one side of the sliding rail 26 is provided with a sliding groove 13, the inner cavity of the sliding groove 13 is slidably connected with a sliding block 14, when it is necessary to adjust the transverse position of the L-shaped slide plate 12 on the sliding rail 26, the mounting box 11 moves synchronously with the sliding block 14 sliding in the sliding groove 13, the plug rod 17 can be inserted into or withdrawn from the through hole 15 and the insertion hole 24 under the elastic force of the spring 19, so as to realize the locking and releasing of the position of the L-shaped slide plate 12.

[0031] The mounting box 11 is provided in plurality, one side of the sliding block 14 is fixedly connected with the side wall of the corresponding mounting box 11, one end of the plug rod 17 penetrates the inner wall of the adjacent mounting box 11 and the inner cavity of the through hole 15 in sequence and is inserted into the inner cavity of the corresponding insertion hole 24, the other end of the plug rod 17 is fixedly connected with a handle 16 penetrating the inner wall of the corresponding mounting box 11, an operator holds the handle 16 and pulls it outward, so that the plug rod 17 is pulled out of the through hole 15 and the insertion hole 24 against the elastic force of the spring 19, the locking of the L-shaped slide plate 12 is released, then the sliding mounting box 11 drives the sliding block 14 to move in the sliding groove 13 to adjust the position, after the handle 16 is released, the spring 19 is reset to insert the plug rod 17 into the new through hole 15 and insertion hole 24 again to complete the locking, so as to realize the quick and reliable locking of the L-shaped slide plate 12 at the appropriate position on the sliding rail 26 within a certain range, improve the effects of tool adaptability and operation convenience.

[0032] The side of the vacuum box 1 is hinged with a sealing plate 2 through a hinge, one side of the sealing plate 2 is provided with a plurality of structure grooves, the inner walls of the structure grooves are fixedly connected with circular magnetic sheets 5, the side of the vacuum box 1 is provided with a vertical groove, the inner wall of the vertical groove is fixedly connected with a magnetic strip 6, one side of the circular magnetic sheet 5 is magnetically attracted to one side of the adjacent magnetic strip 6, the circular magnetic sheet 5 at the edge of the sealing plate 2 is tightly attached to the magnetic strip 6 on the side wall of the vacuum box 1 and generates a magnetic attraction force, forming a sealed connection, improving the convenience and sealing reliability of the opening and closing of the sealing plate 2, preventing vacuum leakage and ensuring the stability of the vacuum environment.

[0033] Working principle: the personnel open the sealing plate 2, place the workpiece to be welded stably in the welding table 7 inside and between the two slide rails 26, then start the electric push rod 9, the output end of the electric push rod 9 extends in the horizontal direction, pushes the connected push block 10 to slide in the inner cavity of the installation groove 8, thereby driving the connected slide rail 26 to move in the installation groove 8 to the direction of the slide rail 26 fixed at the bottom of the inner cavity of the welding table 7, the two slide rails 26 are close to each other until the left and right sides of the workpiece clamp and position the workpiece, realizing the fixation of the workpiece in the horizontal direction, then the operator holds the handle 16 and pulls the plug rod 17 outward, the plug rod 17 moves in the installation box 11, the flange 18 at the outer circle of the plug rod 17 is displaced and compresses the spring 19, so that the spring 19 is elastically deformed and stores energy, the operator can insert one end of the L-shaped sliding plate 12 into the through hole 15 of the slide rail 26, and adjust the insertion hole 24 on the L-shaped sliding plate 12 to correspond to the through hole 15 at different positions on the slide rail 26 according to the actual size of the workpiece and the welding position requirement, so as to adapt to the clamping requirement of workpieces of different specifications, after adjustment, slide the installation box 11, the slide block 14 fixed on one side of the installation box 11 slides synchronously in the slide groove 13 on the side wall of the slide rail 26, ensuring that the movement of the installation box 11 is stable, when the insertion hole 24 is aligned with the target through hole 15, the operator releases the handle 16, the spring 19 releases the stored elastic potential energy and pushes the plug rod 17 to automatically reset, so that one end of the plug rod 17 passes through the side wall of the installation box 11, the corresponding through hole 15 and the insertion hole 24 in turn, thereby firmly locking the L-shaped sliding plate 12 on the slide rail 26, completing the fixation of the transverse position, then the operator manually rotates the rotating handle 22 at the top end of the threaded rod 20, under the limiting and guiding action of the threaded transmission and guide rod 21, the pressing plate 23 moves downward along the vertical direction stably until the bottom end surface is tightly pressed against the upper surface of the workpiece, realizing the vertical pressing of the workpiece from above, and sequentially completing the fixation of the four corner areas of the workpiece, finally closing the sealing plate 2, the circular magnetic sheet 5 on the sealing plate 2 is tightly attached to the magnetic strip 6 on the side wall of the vacuum box 1 through magnetic attraction, ensuring the sealing property of the vacuum box 1, starting the vacuum pump 3, the air in the vacuum box 1 is pumped out through the transmission pipe 4, establishing and maintaining the required high vacuum environment, then starting the electron gun 25 at the top of the inner cavity of the vacuum box 1, the high-energy focused electron beam emitted by the electron gun 25 acts on the workpiece welding area without obstruction in the vacuum environment, realizing high-quality vacuum electron beam welding operation.

[0034] The above-mentioned front, back, left, right, up, down are all based on the drawings in the specification Figure 1 as the standard, the side of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0036] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A vacuum electron beam welding apparatus characterized by comprising: It includes: Vacuum box (1); Vacuum pump (3) is installed on one side of the vacuum box (1); Transmission pipe (4) is installed on one end of the vacuum pump (3); Electron gun (25) is installed on the top of the inner cavity of the vacuum box (1); Welding table (7) is installed on the bottom of the inner cavity of the vacuum box (1), and the welding table has an inner cavity; Compression mechanism is installed in the inner cavity of the welding table (7), wherein the compression mechanism comprises: Slide rail (26), the slide rail (26) is provided with a plurality of through holes (15) on one side of each slide rail (26); Mounting groove (8) is opened in the bottom of the inner cavity of the welding table (7); Electric push rod (9) is installed on one side of the mounting groove (8); Push block (10) is installed on the output end of the electric push rod (9); Two L-shaped sliding plates (12) are slidably connected in the inner cavity of the slide rail (26), and the L-shaped sliding plate (12) is provided with a socket (24) on one side; Threaded rod (20) is installed above the L-shaped sliding plate (12); Pressing plate (23) is installed below the L-shaped sliding plate (12); Two guide rods (21) are installed above the L-shaped sliding plate (12).

2. A vacuum electron beam welding apparatus according to claim 1, wherein: One end of the transmission pipe (4) is fixedly connected with one side of the adjacent vacuum box (1), the inner cavity of the transmission pipe (4) is communicated with the inner cavity of the vacuum box (1), the top of the push block (10) is fixedly connected with the bottom of the corresponding slide rail (26), the outer surface of the push block (10) is slidably connected with the inner cavity of the mounting groove (8), and the bottom of one of the slide rails (26) is fixedly connected with the inner cavity of the welding table (7).

3. A vacuum electron beam welding apparatus according to claim 1, wherein: It also includes: Rotary handle (22) is installed on the top end of the threaded rod (20), wherein the bottom of the threaded rod (20) is rotatably connected with the top of the adjacent pressing plate (23) through the threaded shaft, and the bottom end of the guide rod (21) is fixedly connected with the top of the adjacent pressing plate (23) through the threaded shaft.

4. A vacuum electron beam welding apparatus according to claim 1, wherein: It also includes: Fixing mechanism is installed on one side of the slide rail (26), wherein the fixing mechanism comprises: Mounting box (11); Insert rod (17) is installed in the inner cavity of the mounting box (11); Flap (18) is sleeved on the outer circle of the insert rod (17); Spring (19) is sleeved on the outer circle of the insert rod (17); Slide groove (13) is opened on one side of the slide rail (26); Slide block (14) is installed in the inner cavity of the slide groove (13).

5. A vacuum electron beam welding apparatus according to claim 4, wherein: The mounting box (11) is provided with a plurality of mounting boxes (11), one side of the slide block (14) is fixedly connected with the side wall of the corresponding mounting box (11), one end of the insert rod (17) penetrates the inner wall of the adjacent mounting box (11) and the inner cavity of the through hole (15) and the inner cavity of the corresponding socket (24) in sequence, and the other end of the insert rod (17) penetrates the inner wall of the corresponding mounting box (11) and is fixedly connected with the handle (16).

6. A vacuum electron beam welding apparatus according to claim 1, wherein: One side of the vacuum box (1) is hinged with a sealing plate (2) through a hinge, one side of the sealing plate (2) is provided with a plurality of structure grooves, the inner surface wall of the structure groove is fixedly connected with a circular magnetic sheet (5), one side of the vacuum box (1) is provided with a vertical groove, the inner surface wall of the vertical groove is fixedly connected with a magnetic stripe (6), one side of the circular magnetic sheet (5) is magnetically attracted to one side of the adjacent magnetic stripe (6).

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