CN210878061U - Magnetic back air protector - Google Patents
Magnetic back air protector Download PDFInfo
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- CN210878061U CN210878061U CN201921865948.8U CN201921865948U CN210878061U CN 210878061 U CN210878061 U CN 210878061U CN 201921865948 U CN201921865948 U CN 201921865948U CN 210878061 U CN210878061 U CN 210878061U
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- moving mechanism
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- back air
- air box
- ball
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- 230000001012 protector Effects 0.000 title claims description 3
- 230000007246 mechanism Effects 0.000 claims abstract description 114
- 238000006073 displacement reaction Methods 0.000 claims description 15
- 230000005389 magnetism Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 55
- 238000003466 welding Methods 0.000 description 37
- 239000011261 inert gas Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to a magnetic back air protection device, which comprises an outer moving mechanism and an inner moving mechanism; the outer moving mechanism is propped against the outer surface of the cylinder body; the inner moving mechanism is abutted against the inner surface of the barrel body, a back air box is arranged on the inner moving mechanism, the back air box is pressed on the inner surface of the barrel body by the inner moving mechanism through elasticity, an air outlet is formed in the back air box, and one side of the air outlet of the back air box faces the inner surface of the barrel body; the inner moving mechanism and the outer moving mechanism are mutually attracted through magnetic force, and both the inner moving mechanism and the outer moving mechanism can move on the surface of the cylinder body. The magnetic attraction between the outer moving mechanism and the inner moving mechanism and the movement of the outer moving mechanism and the inner moving mechanism on the surface of the cylinder body are utilized, so that the back gas box automatically moves to the part to be welded along with the outer moving mechanism, manual operation is not needed, manpower is saved, and meanwhile, the back gas protection device is convenient to install and detach on the cylinder body quickly.
Description
Technical Field
The utility model relates to a metal welding field, in particular to back of body gas protection device is inhaled to magnetism.
Background
The metal plasma welding is one-side welding and two-side forming, and the back of the welding seam must be provided with a gas protection device to block the oxidation of oxygen in the air to the welding seam. In general, inert gases are considered to be a good protective medium, and argon is generally used as the protective medium. The device that can be used to implement the gas protection on the back of the weld is called a "back gas protection device".
When the circular welding seam of the large-sized cylinder is welded, a back gas protection device is required to be arranged in the cylinder to prevent the circular welding seam from being oxidized. The welding position of the large-scale cylinder is long, and the back gas protection device and the welding joint are required to be aligned all the time in the welding process. Moreover, when a large-sized cylinder is welded, the cylinder needs to rotate to weld the circumference of the cylinder by a welding joint, and in order to keep the correspondence between the positions of the back gas protection device and the welding joint, the movement of the back gas device in the prior art is generally controlled manually or by a motor. However, the concentration of the inert gas in the cylinder is high, so that the cylinder has great harm to workers; the rotation angle of the back air protection device is manually operated, so that the air protection cover can be deviated or the interval is too large once a worker keeps his mind, and the circular seam is poor in forming; and a complex supporting structure is required to be arranged in the cylinder body through the control of the motor so as to keep the fixation in the cylinder body of the back gas protection device.
SUMMERY OF THE UTILITY MODEL
The main object of the utility model is to provide a back of body gas protection device is inhaled to magnetism does not need artifical nurse, and is convenient for fix and dismantle on the barrel.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a magnetic back gas protection device for cylinder welding comprises an outer moving mechanism and an inner moving mechanism. The outer moving mechanism is propped against the outer surface of the cylinder body; the inner moving mechanism abuts against the inner surface of the barrel, a back air box is arranged on the inner moving mechanism, the back air box is pressed on the inner surface of the barrel through the inner moving mechanism by using elasticity, an air outlet is formed in the back air box, and one side of the air outlet of the back air box faces the inner surface of the barrel; the inner moving mechanism and the outer moving mechanism are mutually attracted through magnetic force, and both the inner moving mechanism and the outer moving mechanism can move on the surface of the cylinder body.
Optionally, the outer moving mechanism includes a fixing bracket and an outer magnetic seat fixed at the bottom of the fixing bracket, the outer magnetic seat is attached to the outer surface of the cylinder, and the outer magnetic seat and the inner moving mechanism are magnetically attracted to each other.
Optionally, the fixing bracket is provided with a fixing rod for aligning the outer magnetic seat, and the outer magnetic seat includes a mounting seat arranged at the bottom of the fixing rod, a first magnetic member fixed on the mounting seat, and a universal ball arranged on the mounting seat.
Optionally, a ball head shaft is arranged between the mounting seat and the fixing rod, one end of the ball head shaft is connected to the fixing rod, the other end of the ball head shaft is spherical, and the end, provided with the ball head, of the ball head shaft is enveloped in the mounting seat, so that the mounting seat can rotate universally relative to the ball head shaft.
Optionally, the ball head shaft is slidably connected to the fixing rod along the axial direction of the ball head shaft.
Optionally, the ball head shaft is sleeved in the fixing rod, a positioning groove is formed in the circumferential wall of the fixing rod for aligning the ball head shaft, the positioning groove penetrates through the wall thickness of the fixing rod, and a positioning hole is formed in the positioning groove for aligning the ball head shaft.
Optionally, the inner moving mechanism includes at least one inner magnetic seat fixed to the back air box, the inner magnetic seat abuts against the inner surface of the cylinder and can move on the inner surface of the cylinder, and the inner magnetic seat and the outer moving mechanism are magnetically attracted to each other.
Optionally, the inner magnetic base is arranged in a plurality of, a plurality of the inner magnetic base is arranged on two sides of the back air box relatively, the inner magnetic base is provided with a fixed plate, the fixed plate is provided with a displacement groove, the back air box is connected in the displacement groove in a sliding manner, so that the back air box can be far away from or close to the barrel body, the back air box can rotate relative to the displacement groove, and a tension spring used for pulling the back air box to move towards the barrel body is arranged between the fixed plate and the back air box.
Optionally, the inner magnetic seat comprises a fixed seat fixed on the back air box, a second magnetic part fixed on the fixed seat, and a universal ball fixed on the fixed seat, and the universal ball abuts against the inner surface of the cylinder.
Optionally, the shape of the edge of the gas outlet side of the back gas box is an arc matched with the radian of the inner surface of the cylinder.
Optionally, a pulley is mounted at each of four corners of the back air box.
According to the above technical scheme, the utility model discloses following beneficial effect has at least:
the utility model discloses among the technical scheme, move outward and have magnetic attraction between the mechanism and the interior moving mechanism, and move outward and move the mechanism and all can remove on the surface of barrel with interior moving mechanism, when outer moving mechanism removed, interior moving mechanism can be along with rotating for relative position between outer moving mechanism and the interior moving mechanism is unchangeable all the time. The back gas box is fixed on the inner moving mechanism, the position of the welding joint and the position of the outer moving mechanism are relatively fixed, when the welding joint and the barrel move relatively, the outer moving mechanism also moves along with the movement, so that the back gas box moves along with the inner moving mechanism, the relative position between the welding joint and the back gas box is always kept unchanged in the moving process of the welding joint, and manual fixing and operation are not needed. When the back gas protection device is fixed on the cylinder body, the outer moving mechanism and the inner moving mechanism are only required to be respectively placed at the relative positions outside and inside the cylinder body, and the attraction force between the outer moving mechanism and the inner moving mechanism ensures the automatic fixing and alignment between the outer moving mechanism and the inner moving mechanism. When the back gas protection device is detached from the cylinder body, only the outer moving mechanism and the inner moving mechanism need to be separated. The magnetic attraction between the outer moving mechanism and the inner moving mechanism and the movement of the outer moving mechanism and the inner moving mechanism on the surface of the cylinder body are utilized, so that the back gas box automatically moves to a position to be welded along with the outer moving mechanism, manual operation is not needed, manpower is saved, and meanwhile, the back gas protection device is convenient to install and disassemble quickly.
Drawings
Fig. 1 is a schematic perspective view of a magnetic back air protection device according to an embodiment of the present invention;
FIG. 2 is a side view of the magnetically attracted backside gas shield apparatus shown in FIG. 1;
FIG. 3 is an enlarged view at E in FIG. 2;
FIG. 4 is an enlarged view at F of FIG. 2;
FIG. 5 is a side view of another angle of the magnetically attracted backside gas shield apparatus of FIG. 1;
fig. 6 is an enlarged view at H in fig. 5.
The reference numerals are explained below: a. a barrel; 1. an outer moving mechanism; 11. fixing a bracket; 11a, fixing rods; 11b, a ball head shaft; 11c, a positioning groove; 11d, positioning holes; 12. an outer magnetic base; 121. a mounting seat; 122. a first magnetic member; 123. a universal ball; 2. an inner moving mechanism; 21. an inner magnetic base; 211. a fixed seat; 212. a second magnetic member; 22. a fixing plate; 221. a displacement slot; 23. a tension spring; 3. a back gas box; 31. an air duct; 32. a pulley.
Detailed Description
Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.
For further explanation of the principles and construction of the present invention, reference will now be made in detail to the preferred embodiments of the present invention, which are illustrated in the accompanying drawings.
Referring to fig. 1, 2 and 5, the present embodiment provides a magnetic back gas protection device for back gas protection of a cylinder a during welding, which includes an outer moving mechanism 1 and an inner moving mechanism 2.
The outer moving mechanism 1 is abutted against the outer surface of the cylinder body a, when the large-sized cylinder body is welded, the positions of the outer moving mechanism 1 and a welding joint are fixed, the relative rotation of the outer moving mechanism 1 and the cylinder body a is realized through the rotation of the cylinder body a, and meanwhile, the circumferential welding of the cylinder body 1 is realized.
The inner moving mechanism 2 is abutted against the inner surface of the cylinder a, the inner moving mechanism 2 is provided with a back air box 3, the inner moving mechanism 2 presses the back air box 3 on the inner surface of the cylinder a by using elasticity, the back air box 3 is provided with an air outlet, and one side of the air outlet of the back air box 3 faces the inner surface of the cylinder a; the inner moving mechanism 2 and the outer moving mechanism 1 are attracted to each other by magnetic force, and both the inner moving mechanism 2 and the outer moving mechanism 1 can move on the surface of the cylinder a.
Inert gas is filled into the position to be welded through the gas outlet of the back gas box 3, and the back gas box 3 is connected with a gas guide pipe 31 used for guiding the inert gas into the back gas box 3.
Referring to fig. 5, the edge of the outlet side of the back air box 3 is shaped into an arc matching the arc of the inner surface of the cylinder a. The shape of the gas outlet of the back gas box 3 can effectively control the gap between the back gas box 3 and the cylinder body a, and avoid the discharge of excessive inert gas from the gas outlet of the back gas box 3, so that the inert gas at the back of the welding part is insufficient, the welding effect is influenced, and the waste of the inert gas is avoided. Pulleys 32 are respectively installed at four corners of the back air box 3 and used for reducing the friction force between the back air box 3 and the cylinder a, so that the back air box 3 can move on the cylinder more stably.
During welding, the positions of the welding joint and the outer moving mechanism 1 are relatively fixed, when the positions of the outer moving mechanism 1 and the cylinder a relatively move, the inner moving mechanism 2 can relatively move on the inner surface of the cylinder a and the cylinder a due to the magnetic attraction of the inner moving mechanism 2 and the outer moving mechanism 1, and the relative positions of the inner moving mechanism 2 and the outer moving mechanism 1 are ensured to be unchanged. On gas box 3 was fixed in moving mechanism 2, and welded joint and outer moving mechanism 1 were relatively fixed for gas box 3 and welded joint's relative position can not change, makes gas box 3 be in the back of the splice of barrel all the time, and gas box 3 does not need artifical fixed and operation when removing in the barrel. Simultaneously, because there is elasticity between gas box 3 and the interior moving mechanism 2, when the internal surface of barrel warp, the effect of elasticity can be effectual the assurance gas box 3 of backing of the body of the anger laminate in the internal surface of barrel a, avoids the inert gas sudden change at the back of welding department, influences the welding effect.
When fixing the back of body gas protection device of this embodiment to barrel a, only need to place outer moving mechanism 1 and interior moving mechanism 2 respectively in the barrel outside with inside and remove the position that has the appeal between the two, release outer moving mechanism 1 and interior moving mechanism 2, the appeal between outer moving mechanism 1 and the interior moving mechanism 2 guarantees the automatic fixation and counterpoint between outer moving mechanism 1 and the interior moving mechanism 2, when back of body gas protection device was dismantled from barrel a, only need to separate between outer moving mechanism 1 and the interior moving mechanism 2, it is convenient fast to install and dismantle.
It can be understood that, when welding structures of other shapes, such as flat plates, the magnetic back gas protection device using the present application is also utilized, when in use, only the positions of the welding joint and the outer moving mechanism 1 need to be kept relatively fixed, when welding different positions, the welding joint and the outer moving mechanism move synchronously together, and the back gas box 3 also moves together, so that the back gas box 3 is always in the welding position.
Further, the outer moving mechanism 1 of the present embodiment includes a fixing bracket 11 and an outer magnetic seat 12 fixed at the bottom of the fixing bracket 11, the outer magnetic seat 12 is attached to the outer surface of the cylinder a, and the outer magnetic seat 12 and the inner moving mechanism 2 are magnetically attracted to each other. The arrangement of the fixed support 11 is convenient for pushing the outer magnetic seat 12 to work, and the fixed support 11 is used for fixing the outer moving mechanism 1 in the process of welding the large-sized cylinder.
In other structures, the outer moving mechanism 1 can be pushed to move relative to the workpiece to be welded by pushing the fixing bracket 11, and the relative positions of the inner moving mechanism 2 and the outer magnetic seat 12 are fixed by the magnetic attraction between the outer magnetic seat 12 and the inner moving mechanism 2.
Referring to fig. 1, 2, 3 and 5, in order to facilitate the rotation of the outer magnetic base 12 on the cylinder, the fixing bracket 11 is provided with a fixing rod 11a for aligning the outer magnetic base 12, and the outer magnetic base 12 includes a mounting seat 121 disposed at the bottom of the fixing rod 11a, a first magnetic member 122 fixed on the mounting seat 121, and a universal ball 123 disposed on the mounting seat 121. The universal ball 123 on the outer magnetic base 12 abuts against the outer surface of the cylinder a. When the outer magnetic seat 12 and the cylinder a move relatively, the universal ball 123 rolls, reducing the friction force between the outer magnetic seat 12 and the cylinder a. The gimbal balls 123 on the outer magnetic base 12 of the present embodiment are provided in plurality. The universal ball 123 is abutted against the outer surface of the cylinder a, so that a certain gap is formed between the other part of the outer magnetic seat 12 and the cylinder a, the universal ball cannot be in surface contact with the cylinder a, and the cylinder a can be effectively prevented from being scratched.
The outer magnetic seats 12 in this embodiment are arranged in two groups, and the two groups of outer magnetic seats 12 are set to make the fixing and moving of the outer moving mechanism 1 more stable.
Further, a ball shaft 11b is disposed between the mounting seat 121 and the fixing rod 11a, one end of the ball shaft 11b is connected to the fixing rod 11a, and the other end is set to be spherical, and one end of the ball shaft 11b, at which a ball head is disposed, is enveloped in the mounting seat 121, so that the mounting seat 121 can rotate universally relative to the ball shaft 11 b. The rotation of the outer magnetic base 12 relative to the fixed support 11 is realized by the universal rotation of the mounting base 121 and the ball head shaft 11b, and simultaneously, the mounting base 121 can rotate universally relative to the ball head shaft 11b due to the attraction between the outer magnetic base 12 and the inner moving mechanism 2 and the arc shape of the surface of the cylinder body, so that the plurality of universal balls 123 at the bottom of the outer magnetic base 12 are simultaneously attached to the cylinder body a, and the position of the outer magnetic base 12 is stable.
In welding large cylinders, the backside gas guard is typically mounted in a fixed position and the cylinder is moved to a welding station. It is preferable to eliminate the interference of the back gas protection means when moving the cylinder to a fixed position. The ball head shaft 11b of the present embodiment is slidably connected to the fixing rod 11a in its axial direction. Through the relative slip of bulb axle 11b and dead lever 11a, realize the removal of outer magnetic support 12 relative fixed bolster 11, when needing to move barrel a to the welding station or remove from the welding station, upwards remove outer magnetic support 12 can effectually avoid outer moving mechanism 1 to cause the interference to barrel a. When the welding is performed on the barrels a with different diameters, the fixed support 11 is fixed, and the relative movement of the outer magnetic seat 12 and the fixed support 11 can control the distance between the outer magnetic seat 12 and the outer surface of the barrel a, so that the welding of the barrels a with different diameters is facilitated.
Further, the relative position of the outer magnetic seat 12 and the fixed bracket 11 can be conveniently fixed. The ball shaft 11b of the embodiment is sleeved in the fixing rod 11a, the ball shaft 11b is aligned on the peripheral wall of the fixing rod 11a and provided with a positioning groove 11c, the positioning groove 11c penetrates through the wall thickness of the fixing rod 11a, and the ball shaft 11b is aligned with the positioning groove 11c and provided with a positioning hole 11 d. A bolt or a pin shaft and other structures are arranged between the positioning groove 11c and the positioning hole 11d, so that the positions of the fixing rod 11a and the ball head shaft 11b are fixed, and after the outer magnetic seat 12 is moved upwards, the position between the outer magnetic seat 12 and the fixing support 11 is fixed. Meanwhile, the outer magnetic seat 12 and the fixed support 11 slide relatively, when the outer surface of the cylinder a is uneven, the outer magnetic seat 12 can move relative to the fixed support 11, and therefore interference or vibration between the outer magnetic seat 12 and the cylinder a, which may be caused when the outer surface of the cylinder is uneven, can be effectively avoided.
It will be appreciated that the sliding connection between the outer magnet holder 12 and the fixing bracket 11 may also be implemented by using a slider or the like, which is moved and then fixed.
The inner moving mechanism 2 of the present embodiment includes at least one inner magnetic seat 21 fixed on the back air box 3, the inner magnetic seat 21 abuts against the inner surface of the cylinder a and can move on the inner surface of the cylinder a, and the inner magnetic seat 21 and the outer moving mechanism 1 are magnetically attracted. The inner magnetic seat 21 and the outer magnetic seat 12 are arranged in a contraposition mode.
Referring to further, the inner magnetic bases 21 of the present embodiment are provided in a plurality of numbers, the inner magnetic bases 21 are oppositely disposed on two sides of the back air box 3, the inner magnetic base 21 is provided with the fixing plate 22, the fixing plate 22 is provided with the displacement groove 221, the back air box 3 is slidably connected in the displacement groove 221, so that the back air box 3 can be far away from or close to the cylinder a, the back air box 3 can rotate relative to the displacement groove 221, and the tension spring 23 for pulling the back air box 3 to move toward the cylinder a is disposed between the inner magnetic base 21 and the back air box 3. Because of the internal surface of barrel a is circular, but utilize back of the body gas box 3 relative displacement groove 221 to rotate for can have certain angle between interior magnetic support 21 and the back of the body gas box 3, and the internal diameter of the barrel of equidimension not is different, and the rotation between back of the body gas box 3 and the displacement groove 221 is connected, is convenient for back of the body gas box 3 to laminate in barrel a. The two sides of the back air box 3 are provided with a plurality of inner magnetic seats 21, so that the stress balance of the back air box 3 can be ensured, and the back air box cannot tilt in one direction. Meanwhile, the sliding connection between the back air box 3 and the inner magnetic seat 21 and the setting of the tension spring 23 between the back air box 3 and the inner magnetic seat 21 ensure that the back air box 3 can be far away from or close to the cylinder a relatively when the inner circumference of the cylinder is out of round, so that the adhesion of the back air box 3 and the cylinder a is ensured, and the back air box 3 and the inner magnetic seat 21 can move on the cylinder a conveniently.
The interior magnetic support 21 and the outer magnetic support 12 of this embodiment are all provided with two counterpointing, and connect through a extension spring 23 between the interior magnetic support 21, and the middle part of extension spring 23 is located the barrel a one side that deviates from of back of the body box 3. Two interior magnetic bases 21 use a extension spring 23 for the pulling force of two interior magnetic bases 21 to back of the body gas box 3 both sides is the same, and back of the body gas box 3 atress is balanced, can not be to one side perk, guarantees the compactness of the laminating of back of the body gas box 3 and barrel a.
The both sides of the back air box 3 of this embodiment are inserted in the displacement groove 221 through the bolt, and the bolt on the back air box 3 and the clearance is set up between the displacement groove 221 to realize the slip and the rotation of bolt in the displacement groove 221, make the back air box 3 can rotate relative to the inner magnet holder 21.
In this embodiment, wing plates are installed on both sides of the back air box 3, the wing plates are parallel to the fixing plate 22 in the length direction, and bolts are installed between the fixing plate 22 and the wing plates, so that the back air box 3 and the inner magnetic base 21 are fixed.
Referring to fig. 2, 4 and 5, in order to ensure the attractive force between the inner magnetic seat 21 and the outer magnetic seat 12, the inner magnetic seat 21 of the present embodiment includes a fixing seat 211 fixed on the back air box 3, a second magnetic element 212 fixed on the fixing seat 211, and a universal ball 123 fixed on the fixing seat 211, wherein the universal ball 123 on the inner magnetic seat 21 abuts against the inner surface of the cylinder a. The structure of the gimbal ball 123 on the outer magnetic base 12 and the structure of the gimbal ball 123 on the inner magnetic base 21 in this embodiment are the same.
Referring to fig. 1, 5 and 6, in the present embodiment, the outer moving mechanism 1 and the inner moving mechanism 2 are relatively fixed and move synchronously by using the magnetic attraction between the first magnetic element 122 and the second magnetic element 212, preferably, the first magnetic element 122 and the second magnetic element 212 are both magnets, so that the first magnetic element 122 and the second magnetic element 212 have a stronger attraction, and the magnetic poles of the opposite surfaces of the first magnetic element 122 and the second magnetic element 212 are opposite.
While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (11)
1. The utility model provides a back of body gas protection device is inhaled to magnetism for barrel welded back of body gas protection, its characterized in that includes:
the outer moving mechanism is abutted against the outer surface of the cylinder body; and
the inner moving mechanism is abutted against the inner surface of the barrel and provided with a back air box, the inner moving mechanism presses the back air box on the inner surface of the barrel by utilizing elasticity, the back air box is provided with an air outlet, and one side of the air outlet of the back air box faces the inner surface of the barrel;
the inner moving mechanism and the outer moving mechanism are mutually attracted through magnetic force, and both the inner moving mechanism and the outer moving mechanism can move on the surface of the cylinder body.
2. The magnetic backside gas shield apparatus of claim 1, wherein the outer moving mechanism comprises a fixed bracket and an outer magnetic seat fixed at the bottom of the fixed bracket, the outer magnetic seat is attached to the outer surface of the cylinder, and the outer magnetic seat and the inner moving mechanism are magnetically attracted to each other.
3. The magnetic backside gas shield apparatus of claim 2 wherein the fixing bracket is provided with a fixing rod to the outer magnetic base, and the outer magnetic base comprises a mounting base at the bottom of the fixing rod, a first magnetic member fixed on the mounting base, and a universal ball provided on the mounting base.
4. The magnetic back air protection device of claim 3, wherein a ball-end shaft is disposed between the mounting seat and the fixing rod, one end of the ball-end shaft is connected to the fixing rod, and the other end of the ball-end shaft is disposed in a spherical shape, and the end of the ball-end shaft having the ball-end is wrapped in the mounting seat, so that the mounting seat can rotate universally relative to the ball-end shaft.
5. The magnetic backside gas shield of claim 4 wherein the ball-end shaft is slidably connected to the fixing rod along its axis.
6. The magnetic back air protection device of claim 5, wherein the ball shaft is sleeved in the fixing rod, a positioning groove is formed in the circumferential wall of the fixing rod for aligning the ball shaft, the positioning groove penetrates through the wall thickness of the fixing rod, and a positioning hole is formed in the positioning groove for aligning the ball shaft.
7. The magnetic backside gas shield apparatus of claim 1 wherein the moving mechanism comprises at least one inner magnetic seat fixed on the backside gas box, the inner magnetic seat is against the inner surface of the cylinder and can move on the inner surface of the cylinder, and the inner magnetic seat and the outer moving mechanism are magnetically attracted.
8. The magnetic back air protection device of claim 7, wherein the plurality of inner magnetic bases are arranged on two sides of the back air box, the inner magnetic bases are provided with a fixed plate, the fixed plate is provided with a displacement groove, the back air box is slidably connected in the displacement groove, so that the back air box can be far away from or close to the cylinder body, the back air box can rotate relative to the displacement groove, and a tension spring for pulling the back air box to move towards the cylinder body is arranged between the fixed plate and the back air box.
9. The magnetic backside gas shield of claim 7 wherein the inner magnetic base comprises a fixing base fixed on the backside gas box, a second magnetic member fixed on the fixing base, and a universal ball fixed on the fixing base, wherein the universal ball abuts against the inner surface of the cylinder.
10. The magnetic back air protector of claim 1, wherein the edge of the air outlet side of the back air box is arc-shaped to match the arc of the inner surface of the cylinder.
11. The magnetic back-air protection device of any one of claims 1-10, wherein a pulley is mounted at each of four corners of the back-air box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921865948.8U CN210878061U (en) | 2019-10-31 | 2019-10-31 | Magnetic back air protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921865948.8U CN210878061U (en) | 2019-10-31 | 2019-10-31 | Magnetic back air protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210878061U true CN210878061U (en) | 2020-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921865948.8U Active CN210878061U (en) | 2019-10-31 | 2019-10-31 | Magnetic back air protector |
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| Country | Link |
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| CN (1) | CN210878061U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115592247A (en) * | 2022-10-24 | 2023-01-13 | 立之力机械（广州）股份有限公司（Cn） | Plasma welding machine for welding tank body |
| CN115922158A (en) * | 2022-11-24 | 2023-04-07 | 无锡美科勒自动化设备有限公司 | Back air protection device and method |
-
2019
- 2019-10-31 CN CN201921865948.8U patent/CN210878061U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115592247A (en) * | 2022-10-24 | 2023-01-13 | 立之力机械（广州）股份有限公司（Cn） | Plasma welding machine for welding tank body |
| CN115922158A (en) * | 2022-11-24 | 2023-04-07 | 无锡美科勒自动化设备有限公司 | Back air protection device and method |
| CN115922158B (en) * | 2022-11-24 | 2023-10-27 | 无锡美科勒自动化设备有限公司 | Back air protection device and method |
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