CN213748956U - Powder metallurgy part machining gas detection tool - Google Patents
Powder metallurgy part machining gas detection tool Download PDFInfo
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- CN213748956U CN213748956U CN202022564566.0U CN202022564566U CN213748956U CN 213748956 U CN213748956 U CN 213748956U CN 202022564566 U CN202022564566 U CN 202022564566U CN 213748956 U CN213748956 U CN 213748956U
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- annular groove
- sealing plate
- shrouding
- communicating pipe
- hole
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- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 title claims description 12
- 238000003754 machining Methods 0.000 title claims description 11
- 238000007789 sealing Methods 0.000 claims abstract description 87
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000007664 blowing Methods 0.000 claims description 17
- 230000000149 penetrating effect Effects 0.000 claims description 15
- 239000000428 dust Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 38
- 230000008859 change Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 freon Chemical compound 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model discloses a frock is examined to powder metallurgy part machine tooling gas, concretely relates to powder metallurgy part production technical field, including last shrouding, it is equipped with down the shrouding to go up the shrouding below, go up the shrouding and be equipped with communicating pipe down between the shrouding, go up the shrouding and run through respectively with lower shrouding top and seted up through-hole and intercommunicating pore, set up from top to bottom through-hole and intercommunicating pore, the shrouding top is run through down and has seted up the ring channel. The utility model discloses a movable plate moves down the sealing washer that drives the lever other end when carriage release lever pressurized and moves upward, seal communicating pipe and the junction of lower shrouding, take place to leak when avoiding gas transportation to the gas transmission passageway in, first spring resilience resets and makes the carriage release lever move upward when not stressed, and the second spring drives the annular slab and carries out the shutoff with ring channel intercommunication department to accomodate the sealing washer inside the annular groove, avoided sealing washer and external dust and moisture contact, increase of service life.
Description
Technical Field
The utility model relates to a powder metallurgy part production technical field, concretely relates to powder metallurgy part machining gas detection frock.
Background
The principle of the airtightness test is to make the device form a closed whole, change the temperature of the whole, cause the pressure change, judge whether the airtightness is good or not, and different devices and test methods are different, and compressed air (or ammonia, freon, helium, halogen gas, etc.) is pressed into a container, and the pressure difference between the gas inside and outside the container is used to check whether the leakage exists or not.
The prior art has the following defects: the sealing strength of the joint is not high, and the subsequent use effect is influenced.
SUMMERY OF THE UTILITY MODEL
For this, the utility model provides a frock is examined to powder metallurgy part machine tooling gas, it overturns to move down to drive the lever through the carriage release lever to receive the extrusion, the lever other end drives the sealing washer during the upset and shifts up, make sealing washer and communicating pipe contact, sealed with the junction of lower shrouding communicating pipe, when avoiding gas to carry the gas transmission passageway on communicating pipe and the last shrouding from the gas pocket on the lower shrouding, take place to leak, influence the result of use, and when the carriage release lever is not pressed, reset through first spring resilience and shift up the carriage release lever, then the second spring makes the annular slab move down and move down the sealing washer to the inside protection of annular groove, and carry out the shutoff with annular groove intercommunication department, the contact of sealing washer with external dust and humid air has been avoided, service life is prolonged.
In order to achieve the above object, the present invention provides the following technical solutions: a powder metallurgy part machining gas detection tool comprises an upper sealing plate, a lower sealing plate is arranged below the upper sealing plate, a communicating pipe is arranged between the upper sealing plate and the lower sealing plate, the tops of the upper sealing plate and the lower sealing plate are respectively provided with a through hole and a communicating hole in a penetrating manner, the through hole and the communicating hole are arranged up and down, the top of the lower sealing plate is provided with a ring groove in a penetrating manner, the bottom of the ring groove is provided with a plurality of gas holes in a penetrating manner, the gas holes are uniformly arranged around the ring groove at intervals, the inner wall of the communicating pipe is in threaded connection with one side wall of the ring groove close to the communicating hole, a plurality of placing cavities are arranged inside the lower sealing plate and uniformly arranged around the ring groove at intervals, the placing cavities are arranged below the ring groove, one side wall of the ring groove far away from the communicating pipe is provided with a ring groove, the bottom end of the ring groove extends into the lower sealing plate, one side wall of the placing cavities close to the ring groove is provided with a movable opening in a penetrating manner, a rotating rod is arranged inside the movable opening, a lever is sleeved on the outer wall of the rotating rod, a lever is arranged inside the movable opening, two ends of the lever respectively extend to the placing cavity and the annular groove, a movable plate is arranged inside the placing cavity, a connecting rod is fixedly arranged at the bottom of the movable plate, the bottom end of the connecting rod is contacted with one end of the lever, the top of the movable plate penetrates through the placing cavity and is flush with the bottom of the inner cavity of the annular groove, a supporting plate is fixedly arranged at the bottom of the placing cavity and is contacted with one end of the lever close to the placing cavity, a plurality of first springs are fixedly arranged at the bottom of the supporting plate and are fixedly connected with the bottom of the placing cavity, a straight rod is arranged at the top of the other end of the lever and is contacted with one end of the lever close to the annular groove, a sealing ring is arranged inside the annular groove, and is fixedly connected with the bottom of the sealing ring, the limiting ring groove is formed in the top of the annular groove and is communicated with the annular groove, a second spring is fixedly arranged at the top of an inner cavity of the limiting ring groove, an annular plate is fixedly arranged at the bottom end of the second spring, and the annular plate is in contact with the top of the sealing ring.
Furthermore, a plurality of gas transmission channels are formed in the top of the upper sealing plate and the top of the communicating pipe in a penetrating mode, the gas transmission channels on the upper sealing plate are communicated with the gas transmission channels on the communicating pipe, the gas transmission channels are arranged at the tops of the gas holes, and the gas transmission channels are communicated with the gas holes in the lower sealing plate.
Furthermore, an air blowing interface column is arranged inside the communicating pipe, the top end of the air blowing interface column penetrates through the upper sealing plate and extends into a through hole in the upper sealing plate, the air blowing interface column is in threaded connection with the upper sealing plate, the air blowing interface column is arranged at the bottom of the through hole, and the air blowing interface column is communicated with the through hole in the upper sealing plate.
Further, go up the shrouding top and be equipped with a plurality of bolts, the shrouding is run through and inside the shrouding and extend to communicating pipe top in the bolt bottom, the bolt is threaded connection with last shrouding and communicating pipe.
Furthermore, a limiting groove is formed in a side wall, close to the air hole, of the placing cavity, a limiting block is arranged inside the limiting groove, and the limiting block and the connecting rod are fixedly connected with one side wall, away from the movable opening.
Furthermore, a sliding groove is formed in one side wall, away from the annular groove, of the annular groove, a sliding block is arranged inside the sliding groove, and the sliding block is fixedly connected with one side wall, away from the movable opening, of the straight rod.
Furthermore, a rubber pad is fixedly arranged at the top of the moving plate.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a carriage release lever is moved down to drive the lever and is overturn by the extrusion, the lever other end drives the sealing washer during the upset and shifts up, make sealing washer and communicating pipe contact, the junction to communicating pipe and lower shrouding has sealed, when avoiding gaseous gas pocket from on the shrouding down to carry the gas transmission passageway on communicating pipe and the last shrouding in, the emergence is leaked, influence the result of use, and when the carriage release lever is not pressed, it resets to shift up the carriage release lever through first spring resilience, then the second spring makes the annular slab move down and moves down the sealing washer and move down to the inside protection of annular groove, and carry out the shutoff with annular groove and ring channel intercommunication department, the contact of sealing washer with external dust and humid air has been avoided, service life is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a cross-sectional view of the overall structure provided by the present invention;
FIG. 2 is an enlarged view of the portion A in FIG. 1 according to the present invention;
FIG. 3 is a sectional view of the lower cover according to the present invention;
fig. 4 is an enlarged view of a portion B in fig. 3 according to the present invention;
fig. 5 is a top view of the upper cover provided by the present invention;
fig. 6 is a plan view of the communication pipe provided by the present invention.
In the figure: the sealing device comprises an upper sealing plate 1, a lower sealing plate 2, a communicating pipe 3, a through hole 4, a communicating hole 5, an annular groove 6, an air hole 7, a placing cavity 8, an annular groove 9, a movable opening 10, a lever 11, a rotating rod 12, a movable plate 13, a connecting rod 14, a supporting plate 15, a first spring 16, a straight rod 17, a sealing ring 18, a limiting annular groove 19, a second spring 20, an annular plate 21, a gas transmission channel 22, a gas blowing interface column 23 and a bolt 24.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to the attached drawings 1-6 of the specification, the powder metallurgy part machining gas detection tool in the embodiment comprises an upper sealing plate 1, a lower sealing plate 2 is arranged below the upper sealing plate 1, a communicating pipe 3 is arranged between the upper sealing plate 1 and the lower sealing plate 2, the tops of the upper sealing plate 1 and the lower sealing plate 2 are respectively provided with a through hole 4 and a communicating hole 5 in a penetrating manner, the through hole 4 and the communicating hole 5 are arranged up and down, the top of the lower sealing plate 2 is provided with a ring-shaped groove 6 in a penetrating manner, the bottom of the ring-shaped groove 6 is provided with a plurality of gas holes 7 in a penetrating manner, the plurality of gas holes 7 are uniformly arranged around the ring-shaped groove 6 at intervals, the inner wall of the communicating pipe 3 is in threaded connection with one side wall of the ring-shaped groove 6 close to the communicating hole 5, a plurality of placing cavities 8 are arranged inside the lower sealing plate 2, the plurality of placing cavities 8 are uniformly arranged around the ring-shaped groove 6 at intervals, the placing cavities 8 are arranged below the ring-shaped groove 6, an annular groove 9 is formed in a side wall, far away from the communicating pipe 3, of the annular groove 6, the bottom end of the annular groove 9 extends into the lower sealing plate 2, a movable opening 10 is formed in a side wall, close to the annular groove 9, of the placement cavity 8 in a penetrating mode, a rotating rod 12 is arranged inside the movable opening, a lever 11 is sleeved on the outer wall of the rotating rod 12, a lever 11 is arranged inside the movable opening 10, two ends of the lever 11 respectively extend into the placement cavity 8 and the annular groove 9, a moving plate 13 is arranged inside the placement cavity 8, a connecting rod 14 is fixedly arranged at the bottom of the moving plate 13, the bottom end of the connecting rod 14 is in contact with one end of the lever 11, the top of the moving plate 13 penetrates through the placement cavity 8 and is flush with the bottom of the inner cavity of the annular groove 6, a supporting plate 15 is fixedly arranged at the bottom of the placement cavity 8, and the supporting plate 15 is in contact with one end, close to the placement cavity 8, of the lever 11, the fixed a plurality of first springs 16 that are equipped with in backup pad 15 bottom, a plurality of first springs 16 all with place 8 bottom fixed connection in chamber, 11 other end tops of lever are equipped with straight-bar 17, straight-bar 17 contacts with the one end that lever 11 is close to annular groove 9, the inside sealing washer 18 that is equipped with of annular groove 9, straight- bar 17 and 18 bottom fixed connection of sealing washer, spacing annular 19 has been seted up at annular groove 9 top, spacing annular 19 is linked together with ring channel 6, 19 fixed second springs 20 that are equipped with in 19 inner chamber tops of spacing annular, the 20 bottom mounting of second spring is equipped with annular plate 21, annular plate 21 contacts with 18 tops of sealing washer.
Further, a plurality of gas transmission channels 22 are formed in the top portions of the upper sealing plate 1 and the top portions of the communicating pipes 3 in a penetrating mode, the gas transmission channels 22 on the upper sealing plate 1 are communicated with the gas transmission channels 22 on the communicating pipes 3, the gas transmission channels 22 are arranged at the tops of the gas holes 7, the gas transmission channels 22 are communicated with the gas holes 7 on the lower sealing plate 2, gas is conveyed, and gas tightness detection is facilitated.
Further, an air blowing interface column 23 is arranged inside the communicating pipe 3, the top end of the air blowing interface column 23 penetrates through the upper sealing plate 1 and extends into the through hole 4 in the upper sealing plate 1, the air blowing interface column 23 is in threaded connection with the upper sealing plate 1, the air blowing interface column 23 is arranged at the bottom of the through hole 4, and the air blowing interface column 23 is communicated with the through hole 4 in the upper sealing plate 1, is matched with the through hole 4, and is convenient to detect air tightness.
Further, go up shrouding 1 top and be equipped with a plurality of bolts 24, bolt 24 bottom runs through shrouding 1 and extends to inside communicating pipe 3 top, bolt 24 and last shrouding 1 and communicating pipe 3 are threaded connection, and convenient to use person dismantles and installs.
Further, place and seted up the spacing groove on the chamber 8 is close to a lateral wall of gas pocket 7, the spacing inslot portion is equipped with the stopper, a lateral wall fixed connection that activity mouth 10 was kept away from to stopper and connecting rod 14 takes place the displacement when avoiding movable plate 13 to remove.
Furthermore, a sliding groove is formed in one side wall, away from the annular groove 6, of the annular groove 9, a sliding block is arranged inside the sliding groove, and the sliding block and the straight rod 17 are fixedly connected with one side wall, away from the movable opening 10, so that displacement is avoided when the sealing ring 18 moves.
Furthermore, a rubber pad is fixedly arranged at the top of the moving plate 13, so that the protection performance is improved.
The implementation scenario is specifically as follows:
when the utility model is used, the worker screws the communicating pipe 3 into the annular groove 6 on the lower sealing plate 2, when the communicating pipe 3 is screwed, the bottom of the communicating pipe 3 is contacted with the plurality of movable plates 13 in the annular groove 6 and presses the movable plates to descend, when descending, the connecting rod 14 extrudes the lever 11 to ensure that one end of the lever 11 close to the placing cavity 8 descends and compresses the first spring 16, while one end of the lever 11 close to the annular groove 9 moves upwards, the straight rod 17 drives the sealing ring 18 to move upwards and extrudes the annular plate 21 into the limiting annular groove 19 to extrude and compress the second spring 20 inside, the sealing ring 18 is sleeved on the outer wall of the communicating pipe 3 to seal the joint of the communicating pipe 3 and the lower sealing plate 2, and when gas is conveyed into the gas conveying channel 22 on the communicating pipe 3 and the upper sealing plate 1 from the gas hole 7 on the lower sealing plate 2 is avoided, when the inside needs to be overhauled, the communicating pipe 3 is screwed out of the annular groove 6, so that the communicating pipe 3 does not limit the movable plate 13, the movable plate 13 drives the lever 11 to turn over by the tension when rebounding through the first spring 16, so that the movable rod moves upwards, the other end of the lever 11 descends to drive the sealing ring 18 to move downwards to the bottom of the annular groove, when the annular plate 21 is not limited by the sealing ring 18, the second spring 20 resets to seal the place where the annular groove 9 is communicated with the annular groove 6, the sealing ring 18 is integrally contained in the annular groove 9 to protect the sealing ring 18, and the annular groove 9 is sealed by downward movement of the annular plate 21, so that the sealing ring 18 is prevented from contacting with external dust and moist air, the service life is prolonged.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (7)
1. The utility model provides a frock is examined to powder metallurgy part machine tooling gas, includes shrouding (1), its characterized in that: a lower sealing plate (2) is arranged below the upper sealing plate (1), a communicating pipe (3) is arranged between the upper sealing plate (1) and the lower sealing plate (2), the tops of the upper sealing plate (1) and the lower sealing plate (2) are respectively provided with a through hole (4) and a communicating hole (5) in a penetrating manner, the through hole (4) and the communicating hole (5) are arranged up and down, the top of the lower sealing plate (2) is provided with a ring-shaped groove (6) in a penetrating manner, the bottom of the ring-shaped groove (6) is provided with a plurality of air holes (7) in a penetrating manner, the plurality of air holes (7) are uniformly arranged around the ring-shaped groove (6) at intervals, the inner wall of the communicating pipe (3) is in threaded connection with one side wall of the ring-shaped groove (6) close to the communicating hole (5), a plurality of placing cavities (8) are arranged inside the lower sealing plate (2), the plurality of placing cavities (8) are uniformly arranged around the ring-shaped groove (6) at intervals, and the placing cavities (8) are arranged below the ring-shaped groove (6), the annular groove (6) is arranged on one side wall far away from the communicating pipe (3) and provided with an annular groove (9), the bottom end of the annular groove (9) extends to the interior of the lower sealing plate (2), a cavity (8) is placed on one side wall close to the annular groove (9) and provided with a movable opening (10) in a penetrating manner, a rotating rod (12) is arranged in the movable opening, a lever (11) is sleeved on the outer wall of the rotating rod (12), a lever (11) is arranged in the movable opening (10), two ends of the lever (11) respectively extend to the interior of the cavity (8) and the annular groove (9), a movable plate (13) is arranged in the cavity (8), a connecting rod (14) is fixedly arranged at the bottom of the movable plate (13), the bottom end of the connecting rod (14) is contacted with one end of the lever (11), the top of the movable plate (13) penetrates through the cavity (8) and is flushed with the bottom of the inner cavity of the annular groove (6), the bottom of the placing cavity (8) is fixedly provided with a supporting plate (15), the supporting plate (15) is in contact with one end of the lever (11) close to the placing cavity (8), the bottom of the supporting plate (15) is fixedly provided with a plurality of first springs (16), the plurality of first springs (16) are all in fixed connection with the bottom of the placing cavity (8), the top of the other end of the lever (11) is provided with a straight rod (17), the straight rod (17) is in contact with one end of the lever (11) close to the annular groove (9), a sealing ring (18) is arranged inside the annular groove (9), the straight rod (17) is in fixed connection with the bottom of the sealing ring (18), the top of the annular groove (9) is provided with a limiting annular groove (19), the limiting annular groove (19) is communicated with the annular groove (6), the top of the inner cavity of the limiting annular groove (19) is fixedly provided with a second spring (20), the bottom of the, the annular plate (21) is in contact with the top of the sealing ring (18).
2. The powder metallurgy part machining gas detection tool according to claim 1, wherein: the top of the upper sealing plate (1) and the top of the communicating pipe (3) are both provided with a plurality of gas transmission channels (22) in a penetrating mode, the gas transmission channels (22) on the upper sealing plate (1) are communicated with the gas transmission channels (22) on the communicating pipe (3), the gas transmission channels (22) are arranged at the tops of the air holes (7), and the gas transmission channels (22) are communicated with the air holes (7) on the lower sealing plate (2).
3. The powder metallurgy part machining gas detection tool according to claim 1, wherein: the air blowing connector is characterized in that an air blowing connector column (23) is arranged inside the communicating pipe (3), the top end of the air blowing connector column (23) penetrates through the upper sealing plate (1) and extends into a through hole (4) in the upper sealing plate (1), the air blowing connector column (23) is in threaded connection with the upper sealing plate (1), the air blowing connector column (23) is arranged at the bottom of the through hole (4), and the air blowing connector column (23) is communicated with the through hole (4) in the upper sealing plate (1).
4. The powder metallurgy part machining gas detection tool according to claim 1, wherein: go up shrouding (1) top and be equipped with a plurality of bolts (24), bolt (24) bottom is run through shrouding (1) and is extended to inside communicating pipe (3) top, bolt (24) and last shrouding (1) and communicating pipe (3) are threaded connection.
5. The powder metallurgy part machining gas detection tool according to claim 1, wherein: a limiting groove is formed in a side wall, close to the air hole (7), of the placing cavity (8), a limiting block is arranged inside the limiting groove, and the limiting block is fixedly connected with a side wall, far away from the movable opening (10), of the connecting rod (14).
6. The powder metallurgy part machining gas detection tool according to claim 1, wherein: a sliding groove is formed in one side wall, away from the annular groove (6), of the annular groove (9), a sliding block is arranged inside the sliding groove, and the sliding block is fixedly connected with one side wall, away from the movable opening (10), of the straight rod (17).
7. The powder metallurgy part machining gas detection tool according to claim 1, wherein: the top of the moving plate (13) is fixedly provided with a rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022564566.0U CN213748956U (en) | 2020-11-09 | 2020-11-09 | Powder metallurgy part machining gas detection tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022564566.0U CN213748956U (en) | 2020-11-09 | 2020-11-09 | Powder metallurgy part machining gas detection tool |
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| Publication Number | Publication Date |
|---|---|
| CN213748956U true CN213748956U (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022564566.0U Active CN213748956U (en) | 2020-11-09 | 2020-11-09 | Powder metallurgy part machining gas detection tool |
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| CN (1) | CN213748956U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118032214A (en) * | 2024-04-15 | 2024-05-14 | 麦卡苏豫(无锡)智能装备有限公司 | Air tightness detection equipment for heat management flow channel plate of new energy automobile |
-
2020
- 2020-11-09 CN CN202022564566.0U patent/CN213748956U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118032214A (en) * | 2024-04-15 | 2024-05-14 | 麦卡苏豫(无锡)智能装备有限公司 | Air tightness detection equipment for heat management flow channel plate of new energy automobile |
| CN118032214B (en) * | 2024-04-15 | 2024-06-07 | 麦卡苏豫(无锡)智能装备有限公司 | Air tightness detection equipment for heat management flow channel plate of new energy automobile |
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