CN219703764U - Handheld TIG welding gun for inner hole point argon arc welding - Google Patents
Handheld TIG welding gun for inner hole point argon arc welding Download PDFInfo
- Publication number
- CN219703764U CN219703764U CN202320827039.5U CN202320827039U CN219703764U CN 219703764 U CN219703764 U CN 219703764U CN 202320827039 U CN202320827039 U CN 202320827039U CN 219703764 U CN219703764 U CN 219703764U
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- welding gun
- welding
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- connecting piece
- head
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- 238000003466 welding Methods 0.000 title claims abstract description 168
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229910052786 argon Inorganic materials 0.000 title claims abstract description 22
- 239000007789 gas Substances 0.000 claims abstract description 52
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 36
- 239000010937 tungsten Substances 0.000 claims abstract description 36
- 230000000149 penetrating effect Effects 0.000 claims abstract description 12
- 239000004020 conductor Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
Abstract
The utility model discloses a hand-held type internal hole point argon arc welding TIG welding gun.A connecting piece with a power supply joint and a gas supply joint is fixedly arranged in a mounting hole at the head part of a handle, a welding gun extension rod is connected with the gas supply joint through the connecting piece, a gas extension channel in the welding gun extension rod is communicated with an internal channel of the gas supply joint through the connecting piece, and the axis of the welding gun extension rod is inclined relative to the handle; the power line plug connected to the power supply connector and the gas pipeline connected to the gas supply connector extend out of the grab handle from the extending hole at the tail part of the grab handle; the welding gun head is fixedly connected to the head of the welding gun extension rod, and a gas channel in the welding gun head is communicated with the gas extension channel; the side wall of the welding gun head is provided with a tungsten rod mounting hole penetrating through the gas channel, the insulating protective sleeve is sleeved on the welding gun head from the head end of the welding gun head, and the welding gun head is provided with a fixing structure for fixing the tungsten rod in the tungsten rod mounting hole. The structure has the advantages of reducing shielding areas, being convenient for welding, being high in welding efficiency, good in welding quality and the like.
Description
Technical Field
The utility model relates to the technical field of welding equipment, in particular to a handheld TIG welding gun with inner hole point argon arc welding.
Background
In the pipeline welding occasion of welding the pipe diameter pipeline system and without the external welding operation space, the purpose of pipeline welding connection is generally realized by adopting an internal welding mode; in addition, when there is a defect on the inner wall of the pipeline and welding repair is needed, the welding repair is also carried out by adopting an internal welding mode. At present, the handheld inner hole spot welding gun on the market is a straight shank welding gun, and in the welding process of adopting an inner welding mode, the welding gun head of the straight shank structure can shield the sight, so that the operation of operators is not facilitated, and the welding efficiency and the welding quality are affected.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the handheld inner hole spot welding gun has the advantages of simple structure, less shielding of vision, high welding efficiency and high welding quality.
In order to solve the problems, the utility model adopts the following technical scheme: the hand-held type hole point argon arc welds TIG welder, include: the handle is provided with a mounting hole communicated with the inner cavity of the handle, a connecting piece made of conductive materials is fixedly arranged in the mounting hole, and a power supply connector is fixedly arranged on the connecting piece positioned in the inner cavity of the handle; the tail part of the welding gun extension rod made of conductive materials, which is positioned outside the grab handle, is connected with a gas supply joint positioned in the inner cavity of the grab handle through a connecting piece, and a gas extension channel in the welding gun extension rod is communicated with the inner channel of the gas supply joint through the connecting piece, and the included angle alpha between the axis of the welding gun extension rod and the central line of the length direction of the grab handle is as follows: alpha is more than 90 degrees and less than 180 degrees; the power line plug connected to the power supply connector and the gas pipeline connected to the gas supply connector penetrate through the inner cavity of the grab handle and extend out of the grab handle from the extending hole at the tail part of the grab handle; the tail part of the welding gun head made of the conductive material is fixedly connected to the head part of the welding gun extension rod, and a gas channel in the welding gun head is communicated with the gas extension channel; the welding gun comprises a welding gun head, a welding rod, a locking bolt, a bolt head embedding hole, a through hole, a locking bolt, a tungsten rod fixing hole, a bolt head fixing hole, a through hole, a locking bolt, a tungsten rod fixing hole and a tungsten rod fixing hole.
In order to ensure that the shielding gas can be uniformly distributed around the tungsten rod and improve the welding quality, the scheme is that a platform is cut at a tungsten rod mounting hole at the center of the tungsten rod, a plurality of air holes are inwards formed in the platform, each air hole is respectively communicated with a gas channel, and each air hole surrounds the periphery of the tungsten rod mounting hole. The more the quantity of gas holes, the less the aperture of gas hole, and the effect is better, in this scheme, the diameter of every gas hole all is less than or equal to 3mm, and each gas hole aperture keeps unanimous, and the quantity of gas hole is more than or equal to three. The included angle alpha between the axis of the welding gun extension rod and the central line of the length direction of the grab handle is 135 degrees plus or minus 10 degrees.
The structure of connecting piece fixed mounting in the mounting hole has multiple forms, and this scheme considers processing, installation, connection fastness, can dismantle comprehensive problems, with the structural design of connecting piece fixed mounting in the mounting hole as following structure: the connecting piece is of a rectangular block structure, the left side wall and the right side wall of the connecting piece are respectively provided with a connecting groove, and when the connecting piece is placed in the mounting hole, the left side edge and the right side edge of the mounting hole are respectively clamped in the corresponding connecting grooves, so that the position of the connecting piece is fixed and clamped; the connecting piece is provided with a through channel, the air supply connector is fixedly connected to the tail part of the through channel, and the tail part of the welding gun extension rod is fixedly connected to the head part of the through channel.
The tail part of the welding gun extension rod is connected with the connecting piece in various forms, and the following structure is designed as follows, wherein in the practical use process, the direction of the tungsten rod is possibly required to be adjusted according to the factors such as the position of a welding seam, and the like: cutting the top of the connecting piece downwards, then cutting the connecting piece forwards horizontally until the connecting piece is cut off, enabling a penetrating channel at the cutting position to form a lower semicircular channel, enabling the tail part of the welding gun extension rod to penetrate through the lower semicircular channel and then extend into the penetrating channel behind the lower semicircular channel, enabling the tail part of the welding gun extension rod in the penetrating channel behind the lower semicircular channel to be provided with a sealing ring mounting groove, and enabling the sealing ring to be embedded in the sealing ring mounting groove; after a pressing block with an upper semicircular channel is arranged on a welding gun extension rod positioned in a lower semicircular channel, a bolt passes through a vertical connecting hole on the pressing block and then is screwed with a vertical threaded hole on a connecting piece, so that the tail part of the welding gun extension rod is pressed and fastened between the lower semicircular channel and the upper semicircular channel. When the direction of the tungsten rod needs to be adjusted, the welding gun extension rod can be rotated only by unscrewing the bolt.
In this scheme, the anterior segment of welder extension rod is for cutting backward along the head end of welder extension rod and forms cone structure, and cone structure's tip is located the head end position of welder extension rod. The design of the cone structure can reduce the volume for shielding the sight line and prevent the head of the welding gun extension rod from rubbing against the wall of the pipeline to be welded when the welding gun head stretches into the pipeline to be welded.
Further, the hand-held type hole point argon arc welding TIG welder, wherein, the grab handle afterbody that is located the hole department of stretching out inwards buckles, and the contained angle beta between the grab handle afterbody after buckling and the grab handle length direction's central line is less than or equal to 170, and this angle designs with ergonomic mode, improves the comfort level that operating personnel held the grab handle.
Further, according to the hand-held type internal hole point argon arc welding TIG welding gun, the anti-skidding patterns are arranged on the outer side wall of the grab handle, so that operators can hold the grab handle more firmly.
The beneficial effects of the utility model are as follows: (1) the length of the welding gun extending into the pipeline to be welded is increased due to the additional arrangement of the welding gun extension rod; in addition, the position of the welding gun extension rod is designed to be inclined with the grab handle, so that the shielding area of the head part of the welding gun is reduced, an operator can observe the condition of the welding position conveniently, and the welding efficiency and the welding quality are improved; in addition, the welding device can be used for the application requirement of welding in micro pipelines, and can be used for welding the inner part of the pipeline with the inner diameter of 13 mm; (2) the direction of the tungsten rod can be adjusted according to the weld position and other factors, so that the welding operation of operators is facilitated.
Drawings
Fig. 1 is a schematic diagram of a partial structure of a hand-held argon arc welding TIG welding gun after disassembly.
Fig. 2 is a schematic diagram of a partial structure of a hand-held argon arc welding TIG welding gun with an inner hole spot according to the present utility model.
FIG. 3 is a schematic view of the structure in section A-A of FIG. 2.
Fig. 4 is a schematic view of the structure of the welding gun head in the direction B in fig. 2.
Fig. 5 is a schematic view of the structure in the cross-section of C-C in fig. 4.
Fig. 6 is a schematic view of the structure in the cross-section D-D of fig. 4.
Description of the embodiments
The technical scheme of the utility model is further described in detail below with reference to the attached drawings and the preferred embodiments.
As shown in fig. 1, 2 and 3, the TIG welding gun for hand-held inner hole point argon arc welding in this embodiment includes: in the grab handle 1, a mounting hole 12 communicated with an inner cavity 11 of the grab handle 1 is formed in the head of the grab handle 1, a connecting piece 2 made of conductive material is fixedly mounted in the mounting hole 12, and a power supply connector 8 is fixedly mounted on the connecting piece 2 positioned in the inner cavity 11 of the grab handle 1. The tail of the welding gun extension rod 4 made of conductive material and positioned outside the grab handle 1 is connected with the air supply joint 8 positioned in the inner cavity 11 of the grab handle 1 through the connecting piece 2, and the air extension channel 41 in the welding gun extension rod 4 is communicated with the inner channel 91 of the air supply joint 9 through the connecting piece 2, and the included angle alpha between the axis of the welding gun extension rod 4 and the central line of the grab handle 1 in the length direction is 90 degrees and less than alpha and less than 180 degrees. The power line plug connected to the power supply connector 8 and the gas pipeline connected to the gas supply connector 9 penetrate through the inner cavity 11 of the grab handle 1, then extend out of the grab handle 1 from the extending hole 13 at the tail of the grab handle 1, and when in use, the power line plug is connected with a power supply, and the gas pipeline is connected with a gas source.
The tail of the torch head 5 made of a conductive material is fixedly connected to the head of the torch extension rod 4, and the gas passage 51 in the torch head 5 communicates with the gas extension passage 41. The tail of the welding gun head 5 is fixedly connected with the head of the welding gun extension rod 4 in a threaded connection mode. As shown in fig. 3, 5 and 6, a tungsten rod mounting hole 54 penetrating the front end of the gas passage is formed in the side wall of the head of the welding gun head 5, a threaded hole 55 penetrating the tungsten rod mounting hole 54 is formed in the end face of the head end of the welding gun head 5, an insulating protective sleeve 7 is sleeved on the welding gun head 5 from the head end of the welding gun head 5, and a fixing structure for fixing the tungsten rod in the tungsten rod mounting hole is arranged on the welding gun head. The fixing structure is as follows: the locking bolt 71 is screwed into the threaded hole 55 inwardly after passing through the bolt head fitting hole 72 on the head end of the insulating protective cover 7 and the through hole 73 in the insulating protective cover 7 until the bottom of the locking bolt 71 tightly presses the tungsten rod 6, thereby fixing the tungsten rod 6 in the tungsten rod mounting hole 54. At this time, the head of the lock bolt is fitted into the bolt head fitting hole 72.
When in operation, the power line plug is connected with a power supply, and the gas pipeline is connected with a gas source. The connecting piece 2, the welding gun extension rod 4 and the welding gun head 5 are electrified, so that the tungsten rod 6 and a pipeline to be welded generate an arc striking at the initial stage of use. The shielding gas is sprayed around the tungsten rod 6 through the gas pipe, the inner channel 91 of the gas supply connector 9, the gas extension channel 41 in the welding gun extension rod 4, the gas channel 51 in the welding gun head 5 and the tungsten rod mounting hole 54. The shielding gas is typically argon.
In order to ensure that the shielding gas can be uniformly distributed around the tungsten rod 6 and improve the welding quality, as shown in fig. 4, 5 and 6, in this embodiment, a platform 56 is cut at a tungsten rod mounting hole 54 located at the tip of the tungsten rod 6, a plurality of air holes 53 are inwardly formed in the platform 56, each air hole 53 is respectively communicated with the gas channel 51, and each air hole 53 surrounds the periphery of the tungsten rod mounting hole 54. The more the number of air holes 53 and the smaller the aperture of the air holes 53, the better the effect, in this embodiment, the diameter of each air hole 53 is 3mm or less, and the aperture of each air hole 53 is kept consistent, and the number of air holes 53 is three or more. The included angle alpha between the axis of the welding gun extension rod 4 and the central line of the length direction of the grab handle 1 is 135 degrees plus or minus 10 degrees. Argon gas is sprayed out through the gas extension channel 41, the gas channel 51 in the welding gun head 5 and the air holes 53 and uniformly distributed around the tungsten rod 6 to form a protective gas barrier.
The structure of connecting piece 2 fixed mounting in mounting hole 12 has multiple forms, and this scheme considers processing, installation, connection fastness, can dismantle etc. comprehensive problem, designs the structure of connecting piece 2 fixed mounting in mounting hole 12 as following structure: as shown in fig. 1 and 2, the connecting piece 2 has a rectangular block structure, and a connecting groove 21 is respectively formed on the side walls of the left and right sides of the connecting piece 2, and when the connecting piece 2 is placed in the mounting hole 12, the edges of the left and right sides of the mounting hole 12 are respectively clamped in the corresponding connecting grooves 21, so that the position of the connecting piece 2 is fixed and clamped. The connecting piece 2 is provided with a through channel 22, and the air supply joint 9 is fixedly connected to the tail part of the through channel 22, so that the through channel 22 is communicated with the inner channel 91 of the air supply joint 9. The tail of the gun extension rod 4 is fixedly connected to the head of the through passage 22 such that the through passage 22 communicates with the gas extension passage 41 in the gun extension rod 4.
The tail portion of the welding gun extension rod 4 is connected to the connecting piece 2 in various forms, and the following structure is designed to be used for connecting the tail portion of the welding gun extension rod 4 to the connecting piece 2, considering that in the actual use process, the direction of the tungsten rod 6 may need to be adjusted according to the welding seam position and other factors: as shown in fig. 1 and 3, after the top of the connecting piece 2 is cut downwards, the connecting piece is cut horizontally forwards until the connecting piece is cut off, so that a lower semicircular channel is formed by the penetrating channel at the cutting position, the tail of the welding gun extension rod 4 penetrates through the lower semicircular channel and then stretches into the penetrating channel 22 behind the lower semicircular channel, a sealing ring mounting groove is formed in the tail of the welding gun extension rod 4 in the penetrating channel behind the lower semicircular channel, and a sealing ring 42 is embedded in the sealing ring mounting groove. After the pressing block 3 with the upper semicircular channel on the bottom surface is placed on the welding gun extension rod 4 positioned in the lower semicircular channel, the bolt 32 passes through the vertical connecting hole 31 on the pressing block 3 and then is screwed with the vertical threaded hole on the connecting piece 2, so that the tail part of the welding gun extension rod 4 is pressed and fastened between the lower semicircular channel and the upper semicircular channel. When the direction of the tungsten rod 6 needs to be adjusted, the welding gun extension rod 4 can be rotated only by unscrewing the bolt 32, so that the tungsten rod 6 can be rotated in any direction in the argon arc welding TIG welding gun, the direction of the tungsten rod 6 and the direction of the hand can be adjusted in any direction, and welding can be conveniently realized in a tiny space.
As shown in fig. 1, 2 and 3, the front section of the welding gun extension rod 4 in this embodiment is cut back along the head end of the welding gun extension rod 4 to form a cone structure 43, and the small end of the cone structure 43 is located at the head end of the welding gun extension rod 4. The conical structure 43 can reduce the volume for shielding the sight line and prevent the head of the welding gun extension rod 4 from rubbing against the wall of the pipeline to be welded when the welding gun head 5 stretches into the pipeline to be welded.
As shown in fig. 2, in this embodiment, the tail of the handle 1 located at the protruding hole 13 is bent inwards, and the included angle β between the bent tail of the handle and the center line of the length direction of the handle is less than or equal to 170 °, which is designed in an ergonomic manner, so as to improve the comfort level of the operator holding the handle.
In this embodiment, the outer sidewall of the handle 1 is provided with anti-slip patterns, so that an operator can hold the handle 1 more firmly.
The utility model has the following advantages: (1) the length of the welding gun extending into the pipeline to be welded is increased by additionally arranging the welding gun extending rod 4; in addition, the position of the welding gun extension rod is designed to be inclined with the grab handle, so that the shielding area of the head part of the welding gun is reduced, an operator can observe the condition of the welding position conveniently, and the welding efficiency and the welding quality are improved; in addition, the welding device can be used for the application requirement of welding in micro pipelines, and can be used for welding the inner part of the pipeline with the inner diameter of 13 mm; (2) the direction of the tungsten rod 6 can be adjusted according to the weld position and other factors, so that the welding operation of operators is facilitated.
The above description is only of the preferred embodiment of the present utility model, and is not intended to limit the present utility model in any other way, but any modifications or equivalent variations according to the technical spirit of the present utility model are still included in the scope of the present utility model.
Claims (9)
1. A hand-held interior spot argon arc welds TIG welding gun, comprising: grab handle, its characterized in that: the head of the grab handle is provided with a mounting hole communicated with the inner cavity of the grab handle, a connecting piece made of conductive materials is fixedly arranged in the mounting hole, and a power supply connector is fixedly arranged on the connecting piece positioned in the inner cavity of the grab handle; the tail part of the welding gun extension rod made of conductive materials, which is positioned outside the grab handle, is connected with a gas supply joint positioned in the inner cavity of the grab handle through a connecting piece, and a gas extension channel in the welding gun extension rod is communicated with the inner channel of the gas supply joint through the connecting piece, and the included angle alpha between the axis of the welding gun extension rod and the central line of the length direction of the grab handle is as follows: alpha is more than 90 degrees and less than 180 degrees; the power line plug connected to the power supply connector and the gas pipeline connected to the gas supply connector penetrate through the inner cavity of the grab handle and extend out of the grab handle from the extending hole at the tail part of the grab handle; the tail part of the welding gun head made of the conductive material is fixedly connected to the head part of the welding gun extension rod, and a gas channel in the welding gun head is communicated with the gas extension channel; the welding gun comprises a welding gun head, a welding rod, a locking bolt, a bolt head embedding hole, a through hole and a locking bolt, wherein the welding rod embedding hole penetrates through the welding gun head, the locking bolt is arranged on the welding gun head, the locking bolt penetrates through the bolt head embedding hole and the through hole, and then is screwed into the threaded hole inwards until the bottom of the locking bolt tightly presses the welding rod, so that the welding rod is fixed in the welding rod installing hole.
2. The hand-held, interior spot argon arc welding TIG welding gun of claim 1, wherein: a platform is cut at a tungsten rod mounting hole at the center of the tungsten rod, a plurality of air holes are formed in the platform inwards, each air hole is communicated with the air channel, and each air hole surrounds the periphery of the tungsten rod mounting hole.
3. The hand-held, interior spot argon arc welding TIG welding gun of claim 2, wherein: the diameter of each air hole is smaller than or equal to 3mm, the pore diameters of the air holes are kept consistent, and the number of the air holes is larger than or equal to three.
4. The hand-held, interior spot argon arc welding TIG welding gun of claim 1, wherein: the included angle alpha between the axis of the welding gun extension rod and the central line of the length direction of the grab handle is 135 degrees plus or minus 10 degrees.
5. The hand-held, interior spot argon arc welding TIG welding gun of claim 1, wherein: the connecting piece is of a rectangular block structure, the left side wall and the right side wall of the connecting piece are respectively provided with a connecting groove, and when the connecting piece is placed in the mounting hole, the left side edge and the right side edge of the mounting hole are respectively clamped in the corresponding connecting grooves, so that the position of the connecting piece is fixed and clamped; the connecting piece is provided with a through channel, the air supply connector is fixedly connected to the tail part of the through channel, and the tail part of the welding gun extension rod is fixedly connected to the head part of the through channel.
6. The hand-held, interior spot argon arc welding TIG welding gun of claim 5, wherein: the welding gun extension rod can circumferentially rotate relative to the connecting piece, and the concrete structure is as follows: cutting the top of the connecting piece downwards, then cutting the connecting piece forwards horizontally until the connecting piece is cut off, enabling a penetrating channel at the cutting position to form a lower semicircular channel, enabling the tail part of the welding gun extension rod to penetrate through the lower semicircular channel and then extend into the penetrating channel behind the lower semicircular channel, enabling the tail part of the welding gun extension rod in the penetrating channel behind the lower semicircular channel to be provided with a sealing ring mounting groove, and enabling the sealing ring to be embedded in the sealing ring mounting groove; after a pressing block with an upper semicircular channel is arranged on a welding gun extension rod positioned in a lower semicircular channel, a bolt passes through a vertical connecting hole on the pressing block and then is screwed with a vertical threaded hole on a connecting piece, so that the tail part of the welding gun extension rod is pressed and fastened between the lower semicircular channel and the upper semicircular channel.
7. The hand-held, interior spot argon arc welding TIG welding gun of claim 1, wherein: the front section of the welding gun extension rod is cut backwards along the head end of the welding gun extension rod to form a cone structure, and the small end of the cone structure is positioned at the head end of the welding gun extension rod.
8. The hand-held, interior spot argon arc welding TIG welding gun of claim 1 or 4, wherein: the tail of the grab handle positioned at the position of the extending hole is inwards bent, and an included angle beta between the bent tail of the grab handle and the central line of the grab handle in the length direction is smaller than or equal to 170 degrees.
9. The hand-held, interior spot argon arc welding TIG welding gun of claim 1, wherein: the outer side wall of the grab handle is provided with anti-skid patterns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320827039.5U CN219703764U (en) | 2023-04-14 | 2023-04-14 | Handheld TIG welding gun for inner hole point argon arc welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320827039.5U CN219703764U (en) | 2023-04-14 | 2023-04-14 | Handheld TIG welding gun for inner hole point argon arc welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219703764U true CN219703764U (en) | 2023-09-19 |
Family
ID=87982881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320827039.5U Active CN219703764U (en) | 2023-04-14 | 2023-04-14 | Handheld TIG welding gun for inner hole point argon arc welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219703764U (en) |
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2023
- 2023-04-14 CN CN202320827039.5U patent/CN219703764U/en active Active
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