TW201634161A - Welding structure of vacuum valve and method and apparatus thereof - Google Patents

Abstract

A welding structure of vacuum valve includes a first plate; a second plate, with two lateral edges of the first and second plates contacted and internally welded, such that internal edges of the first plate and the second plate form an internal welding run; and a cover plate, welded at one end of the first and second plates. Therefore, through the method of internally welding, a vacuum valve body is internally fully welded, preventing the valve body structure from being damaged and achieving a vacuum environment.

Description

Welding structure of vacuum valve body, welding method and welding device thereof

The invention relates to a welded structure of a vacuum valve body, a welding method thereof and a welding device, in particular to a method of welding the object to be welded by using a solderless internal welding method, thereby fabricating a vacuum valve body.

According to the current vacuum valve body, the hollow valve body is mostly hollow and flat, and it is not easy to manually perform the internal welding operation. Therefore, it is only possible to weld from the outside for the convenience of welding. It is more common to use the penetration welding through the outside of the valve body. The welding method is carried out, and the solder is infiltrated into the gap during the welding process, so that the gap is completely and completely filled to achieve the joint of the valve body, thereby realizing the internal vacuum effect.

However, external welding needs to consider the technical purity of each operator, and the penetration welding system mainly causes the two joint parts to be melted and filled with solder. However, in the process, the valve body joint will be slightly deformed, resulting in damage. The valve body itself has the possibility of producing tiny slits. Once a slit is produced, the vacuum valve will not reach the internal vacuum and affect the life of the product.

In order to solve the above problems, the present invention discloses a welding structure of a vacuum valve body, a welding method thereof and a welding device, which are used to avoid damage to the valve body structure by internal welding work, thereby achieving the purpose of vacuuming the valve body.

In order to achieve the above object, the present invention provides a welded structure of a vacuum valve body, comprising: a first plate; a second plate, the two side edges of which are correspondingly connected with the first plate, and are fixed by internal welding. And an inner bead is formed on the inner edge of each joint of the first plate and the second plate; and a cover plate is welded and fixed to one end of the first plate and the second plate.

In order to achieve the above object, the present invention further provides a method for soldering a vacuum valve body, comprising the steps of: providing a first plate and a second plate, and covering one end of the first plate and the second plate with a cover; The plate is welded and consolidated to form a hollow object to be welded; the object to be welded is placed in a movable seat, the movable seat can be reciprocally displaced with respect to a welding torch; and the movable seat is moved toward the welding torch, so that the welding torch is extended The inside of the workpiece to be welded is welded along the inner edges of the joints of the first plate and the second plate, so that an inner bead is formed on both sides of the inner portion of the object to be welded, thereby welding the object to be welded Form a vacuum valve body.

In order to achieve the above object, the present invention further provides a soldering apparatus, comprising: a soldering station; an electric welding unit suspended from the soldering station; the electric welding unit has a welding torch; and a movable seat is slidably disposed on the soldering station. And a driving unit for driving the movable seat to reciprocally displace relative to the welding torch, so that the welding torch can extend into the hollow interior of the workpiece to be welded.

Thereby, the present invention enables the hollow welding object to be welded in the moving position, thereby achieving the vacuum purpose of the vacuum valve body, and the invention adopts the solderless welding, so that the inner bead depth is smaller than the joint of the object to be welded. The thickness is so difficult to deform the valve body, to avoid damaging the structural strength of the valve body, and to effectively achieve the purpose of vacuum.

Furthermore, in order to increase the structural strength of the vacuum valve body and prolong the service life, it is possible to weld at intervals on the outer edges of the joints to form a plurality of outer weld beads. The length of the outer weld bead is less than the inner weld bead.

For the convenience of the description, the central idea expressed by the present invention in the column of the above summary of the invention is expressed by the specific embodiments. The various items in the embodiments are set forth in proportion to the description and not in the

Please refer to FIG. 1 to FIG. 8 , which is a welding device 100 of the present invention, which includes a soldering station 10 , an electric welding unit 20 , a movable seat 30 , and a driving unit 40 .

The soldering station 10 is generally rectangular in shape, and is provided with a column 11 at a corner. The column 11 is axially provided with a fixing seat 12, and the fixing base 12 is permeable to the screw assembly for adjusting the height position along the axial direction of the column 11.

The electric welding unit 20 has a welding torch 21 and a long rod 22. One end of the long rod 22 is coupled to the fixing base 12, and the other end is fixed to the welding torch 21, so that the welding torch 21 is suspended on the welding table 10, and The column 11 is vertically disposed at 90 degrees. Through the adjustment of the fixing seat 12, the welding torch 21 can be height-adjusted to adapt to different height welding operations.

The mesa of the soldering station 10 is provided with a long strip 13 which is disposed in parallel with the welding torch 21 and located below the welding torch 21.

The movable seat 30 is slidably disposed on the track 13. Preferably, the movable seat 30 includes a first slider 31 and a second slider 32. The first slider 31 and the second slider 32 are slidably disposed on the rail 13 at intervals. The movable seat 30 further includes two positioning blocks 33, 34 respectively disposed at the top of the first slider 31 and the second slider 32, and a horizontal plate 35 locked between the two positioning blocks 33, 34. The two positioning blocks 33 and 34 are in an inverted U shape for placing a hollow object to be welded 200.

As shown in FIGS. 4 and 5, the hollow object to be welded 200 of the present invention is composed of one of the two first-shaped plates 201 and a second plate 202, which are placed in the movable seat. Before the 30th, the first plate 201 and the second plate 202 are pre-consolidated by a cover plate 203, so that the first plate 201 and the second plate 202 are connected to each other, and the hollow long flat can be presented. Shape, so that its structure is not loose and easy for subsequent welding operations.

A fixing nut 36 and a limiting screw 37 screwed on the fixing nut 36 are disposed on the front edge of the positioning block 33 of the movable seat 30 away from the one end of the welding torch 21 for placing the workpiece 200 on the movable seat 30. In the upper direction, the front edge of the object to be welded 200 is stopped to avoid the welding object 200 moving away from the welding torch 21 during the welding operation.

The driving unit 40 is configured to drive the movable seat 30 to reciprocate relative to the welding torch 21, so that the welding torch 21 can extend into the hollow interior of the workpiece to be welded 200 for internal welding. The driving unit 40 includes a motor 41, a guiding rod 42 and a connecting member 43. The motor 41 is disposed on the soldering station 10 and located on the side of the electric welding unit 20, the guiding rod 42 is connected to the motor 41 and rotates therewith, and the guiding rod 42 is located on the side of the rail 13 and disposed parallel thereto, and the connecting member 43 is screwed. It is disposed on the guiding rod 42 and is connected to the movable seat 30. Preferably, the connecting member 43 is connected to the positioning block 34 which is closer to one end of the welding torch 21, whereby when the motor 41 drives the guiding rod 42 to rotate, the connecting member 43 The movable seat 30 can be driven to reciprocate on the rail 13 and face the welding torch 21 or away from the welding torch 21 for welding work.

It is worth mentioning that the movable seat 30 of the present invention moves at a relatively slow speed, about 15 to 22 mm for 1 minute. Therefore, the movable seat 30 has no special clamping structure design, but only the positioning blocks 33 and 34 of the corresponding size. The two positioning blocks 33, 34 are screwed to the first slider 31 and the second slider 32 for different sizes of the workpieces to be welded 200, so as to replace the positioning blocks in time. 33, 34 for accepting workpieces 200 of different sizes. Similarly, the distance between the first slider 31 and the second slider 32 is also set according to the length of the object to be soldered 200. If the length of the object to be soldered 200 is long, the longer horizontal plate 35 is selected to The distance between the first slider 31 and the second slider 32 is adjusted to allow the workpiece to be welded 200 to be stably placed on the movable seat 30.

As shown in FIG. 6 and FIG. 7, it is a schematic diagram of the internal welding operation of the present invention. First, the welding torch 21 can be adjusted to an appropriate height so that the movable seat 30 can move the object to be welded 200 toward the welding torch 21, and the welding torch 21 can be inserted into the interior of the workpiece to be welded 200 and joined along the workpieces to be welded 200. The inner edge is subjected to self-fusing internal welding. Preferably, an inner bead 204 is formed on both sides of the inner portion of the object to be welded 200 to weld the object to be welded 200 into a vacuum valve body 300, as shown in FIG.

Accordingly, the present invention employs a solderless internal welding operation such that the vacuum effect inside the valve body can be achieved, and since the present invention is solderless, the inner bead 204 has a depth less than the thickness of the joint of the object to be welded 200, Therefore, it is not easy to deform the valve body, which causes damage to the structural strength. At the same time, since the inner bead 204 has a small depth, it is not easy to generate voids and avoid dirt and dirt.

Furthermore, as shown in FIG. 8, the vacuum valve body 300 can be welded at the outer edge of each joint to form a plurality of outer weld beads 301. The length of the outer weld bead 301 is smaller than the inner weld bead 204, thereby increasing the overall The structural strength and longevity.

Further, the outer bead 301 is welded at intervals. When the vacuum valve body 300 is detected by the nitrogen gas detector, if the inner bead 204 is damaged and a gap is generated, the nitrogen gas easily enters the inside of the valve body. It is easy to detect the leaking place for welding filling; and if the outer bead 301 is full-welded, the joint is filled by the bead on both sides, and even if there is a leak, it is not easy to pass through the nitrogen detector. Detection.

Next, a welding method of the vacuum valve body of the present invention will be described, which comprises the following steps:

a first plate 201 and a second plate 202 are provided, and one end of the first plate 201 and the second plate 202 are welded and fixed by a cover plate 203 to form a hollow object to be welded 200;

The object to be soldered 200 is placed on the movable seat 30 of the soldering station 10;

The movable seat 30 is moved toward the welding torch 21, and the welding torch 21 is inserted into the interior of the workpiece to be welded 200, and is welded along the inner edges of the joints of the first plate 201 and the second plate 202 to be welded. An inner bead 204 is formed on both sides of the inside of the object 200, and the object to be welded 200 is welded to the vacuum valve body 300.

Through the welding method, the inside of the vacuum valve body 300 can be completely welded, and the structure of the valve body can be prevented from being damaged, and in order to increase the overall structural strength and prolong the service life, after the internal welding, for the first plate 201 and the first The outer edges of the joints of the two sheets 202 are spaced and welded to form a plurality of outer weld beads 301.

Finally, the welding structure of the vacuum valve body of the present invention is described, which is completed by the foregoing apparatus and method, and includes a first plate 201 and a second plate 202, and the second plate 202 is connected with the first plate 201. And forming, by internal welding, an inner bead 204 is formed at an inner edge of each joint of the first plate 201 and the second plate 202; and is fixed to the first plate 201 and the second by welding with the cover plate 203 One end of the plate 202.

Further, the outer edges of the joints of the first plate 201 and the second plate 202 are spaced and welded to form a plurality of outer bead 301, thereby improving the structural strength of the vacuum valve body 300.

Therefore, the present invention adopts the solderless internal welding operation mode in which the welding tool 21 is fixed and the workpiece 200 is displaced toward the welding torch 21, so that the narrow and hollow valve body can be welded and effectively achieved. The internal vacuum effect, and through the internal welding, can avoid deformation of the valve body, resulting in damage to its structural strength. Furthermore, the outer edge of the vacuum valve body 300 is welded at intervals to increase the overall structural strength and prolong the service life.

While the invention has been described in terms of a preferred embodiment, the various embodiments may The above embodiments are merely illustrative of the invention and are not intended to limit the scope of the invention. All modifications or changes made without departing from the spirit of the invention are within the scope of the invention.

100‧‧‧ welding equipment
11‧‧‧ column
13‧‧‧ Track
21‧‧‧Electric welding torch
30‧‧‧ activity seat
32‧‧‧Second slider
35‧‧‧ horizontal board
37‧‧‧Restriction screw
41‧‧‧Motor
43‧‧‧Connecting parts
201‧‧‧ first board
203‧‧‧ Cover
300‧‧‧Vacuum valve body
10‧‧‧ soldering station
12‧‧‧ Fixed seat
20‧‧‧Electric welding unit
22‧‧‧Long pole
31‧‧‧First slider
33, 34‧‧‧ Positioning block
36‧‧‧Fixed nuts
40‧‧‧ drive unit
42‧‧‧guides
200‧‧‧Wears to be welded
202‧‧‧Second piece
204‧‧‧Inner weld
301‧‧‧External weld bead

Fig. 1 is a perspective view of a welding apparatus of the present invention. Fig. 2 is a plan view of the welding apparatus of the present invention. Fig. 3 is an external view of the welding apparatus of the present invention, showing that the object to be welded is placed on the movable seat. Fig. 4 is an exploded view showing the structure of the object to be welded according to the present invention. Fig. 5 is a perspective view showing the structure of a workpiece to be welded according to the present invention. [Fig. 6] is a schematic view showing the internal welding operation of the electric welding torch of the present invention which is inserted into the object to be welded. Fig. 7 is a schematic view showing the inner welding work of the present invention, showing an inner bead formed between the first plate and the second plate. [Fig. 8] is a schematic view showing the structure of the inner bead and the outer bead of the vacuum valve body of the present invention.

300‧‧‧Vacuum valve body

201‧‧‧ first board

202‧‧‧Second piece

203‧‧‧ Cover

204‧‧‧Inner weld

301‧‧‧External weld bead

Claims (16)

A welded structure of a vacuum valve body, comprising: a first plate; a second plate, wherein two side edges are correspondingly connected with the first plate, and are consolidated by internal welding, so that the first plate Forming an inner bead with the inner edge of each joint of the second plate; and a cover plate fixed to one end of the first plate and the second plate. The welded structure of the vacuum valve body according to claim 1, wherein the first plate and the second plate are each a U-shaped shape. The welded structure of the vacuum valve body according to claim 1, wherein the outer edges of the joints of the first plate and the second plate are welded to each other to form a plurality of outer weld beads. A method for welding a vacuum valve body, comprising the steps of: providing a first plate and a second plate, and welding one end of the first plate and the second plate to a cover plate to form a a hollow object to be welded; the object to be welded is placed in a movable seat, the movable seat is reciprocally displaceable relative to a welding torch; and the movable seat is moved toward the welding torch, so that the welding torch protrudes into the The inner portion of the joint to be welded is welded along the inner edge of each joint of the first plate and the second plate, so that an inner weld bead is formed on both sides of the inner portion of the object to be welded, and the inner bead is welded. The object is welded to form a vacuum valve body. The method of welding a vacuum valve body according to claim 4, wherein after the inner welding, the outer edges of the joints of the first plate and the second plate are welded to each other to form a plurality of outer portions. Weld bead. The method of welding a vacuum valve body according to claim 5, wherein the length of each outer rail is smaller than each inner bead. The method of welding a vacuum valve body according to claim 5, wherein the first plate and the second plate are each a U-shaped type. A welding device comprising: a soldering station; an electric welding unit suspended from the soldering station, the electric welding unit has a welding torch; a movable seat is slidably disposed on the soldering station for placing a hollow shape And a driving unit for driving the movable seat to reciprocally displace relative to the welding torch, so that the welding torch can extend into the hollow interior to be welded for internal welding. The welding device of claim 8, wherein the soldering station is provided with a column, the column is axially provided with a fixing seat, the fixing seat extends a long rod, and the end portion is fixed for the welding torch. The welding apparatus of claim 9, wherein the fixing seat is adjustable in height along an axial direction of the column. The welding device of claim 8, wherein the welding station is provided with a rail for sliding the movable seat thereon. The welding device of claim 8, wherein the driving unit comprises a motor disposed on the soldering station, a guiding rod connected to the motor and rotating therewith, and a device disposed between the movable seat and the guiding rod The connecting member, when driven by the motor, moves the connecting member along the axial direction of the guiding rod to drive the movable seat to reciprocate. The welding device of claim 11, wherein the movable seat comprises a first slider, a second slider and the first slider are slidably disposed on the track, and the two positioning blocks are respectively disposed on the first a slider and the second slider, and a horizontal plate locked between the two positioning blocks, wherein the two positioning blocks are in an inverted shape for the to-be-welded object to be placed. The welding device of claim 13, wherein a fixing nut of the positioning block is provided with a fixing nut and a limiting screw screwed to the fixing nut for stopping the leading edge of the object to be welded. The welding device of claim 13, wherein the two positioning blocks are respectively screwed to the first slider and the second slider. The welding device of claim 8, wherein the object to be welded comprises two plates of a U-shaped shape.