CN210487187U - Air tightness detection device - Google Patents

Abstract

The utility model discloses a gas tightness check out test set, it includes transmission device, helium leak detection mechanism and hydrogen leak detection mechanism, and transmission device conveys the product and passes through helium leak detection mechanism and hydrogen leak detection mechanism in proper order, and helium leak detection mechanism is used for the airtight detection of product welding department, and hydrogen leak detection mechanism is used for the gas tightness detection after the product seals. This application sets up through helium leak detection mechanism and hydrogen leak detection mechanism's cooperation, and the detection of the gas tightness around smooth completion product seals, and the process is concentrated, and the continuity is good for the check-out time of product is short, and then has promoted the detection efficiency and the production efficiency of product.

Description

Air tightness detection device

Technical Field

The utility model relates to an automated production technical field, specificly relate to an air tightness check out test set.

Background

With the development of technology, the automated production of various products is more and more emphasized by enterprises. The direct current contactor is a contactor product used in a direct current loop and is suitable for a program-controlled power supply or an uninterruptible power supply system, a forklift, an electric automobile, a mobile electric charging pile and other various new energy fields. In the production process of the direct current contactor, the air tightness detection needs to be carried out on the direct current contactor, but in the prior art, the procedures of the air tightness detection before and after the sealing of the direct current contactor are dispersed, and the continuity of the procedures is poor, so that the detection time is long.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides an air tightness check out test set.

An airtightness detection apparatus includes: the device comprises a transmission mechanism, a helium leakage detection mechanism and a hydrogen leakage detection mechanism; the transmission mechanism transmits the product to sequentially pass through the helium leakage detection mechanism and the hydrogen leakage detection mechanism; the helium leakage detection mechanism is used for detecting the air tightness of the product welding position; the hydrogen leakage detection mechanism is used for detecting the air tightness of the sealed product.

According to one embodiment of the present invention, the helium leak detection mechanism includes a helium detection bearing member, a nitrogen flushing member and a helium detection member; the helium detection bearing piece is used for bearing the product; the nitrogen flushing component and the helium detecting component are respectively communicated with a product carried by the helium detecting bearing component; the nitrogen flushing component is used for exhausting gas in the product, and the helium detecting component is used for helium leakage detection of the product.

According to an embodiment of the present invention, the helium leak detection mechanism further comprises an air pipe connection assembly; the gas pipe connecting assembly is communicated with a product carried by the helium detection bearing piece; the nitrogen flushing assembly and the helium detecting assembly are respectively communicated with the product through the air pipe connecting assembly.

According to an embodiment of the present invention, the helium leak detection mechanism further comprises a hydrogen flushing component and a jaw component; the hydrogen flushing component flushes hydrogen for the product after helium leakage detection; the jaw assembly is used for sealing the product after hydrogen gas is filled in the product.

According to an embodiment of the present invention, the nitrogen flushing assembly comprises a nitrogen flushing member; the nitrogen flushing piece is communicated with the air pipe connecting assembly and is used for filling nitrogen into the product.

According to an embodiment of the present invention, the helium detecting component comprises a helium detecting member; the helium detection piece is communicated with the air pipe connecting assembly and is used for spraying nitrogen outside the product and performing helium detection on the inside of the product.

According to an embodiment of the present invention, the hydrogen filling assembly includes a hydrogen filling member; towards hydrogen spare and trachea coupling assembling intercommunication, it is used for being full of hydrogen to helium test qualified product inside.

According to an embodiment of the present invention, the jaw assembly comprises a jaw positioning member, a jaw clamping member and a jaw member; the jaw positioning piece and the jaw piece are respectively arranged around the jaw clamping piece; the clamping piece of keeping silent is used for the fixed centre gripping before the product is kept silent, and the setting element of keeping silent is used for the product and keeps silent before keeping silent, and the piece of keeping silent is used for keeping silent of product.

According to an embodiment of the present invention, the hydrogen leakage detecting mechanism includes a hydrogen leakage detecting cover and a hydrogen leakage detecting assembly; the hydrogen leak detection assembly is arranged in the hydrogen leak detection cover.

According to an embodiment of the present invention, the hydrogen leakage detection mechanism further comprises a product transfer assembly; the product conveying assembly conveys a product into the hydrogen leakage detection cover.

According to an embodiment of the present invention, the hydrogen leakage detecting mechanism further comprises a vacuum pumping member; the vacuumizing piece is communicated with the hydrogen leakage detecting cover.

According to an embodiment of the present invention, the device further comprises a cleaning mechanism; the cleaning mechanism is used for cleaning before product detection.

According to an embodiment of the present invention, the apparatus further comprises a shaping mechanism; the shaping mechanism is used for shaping the product before detection.

According to an embodiment of the present invention, the device further comprises a code scanning positioning mechanism; sweep a yard positioning mechanism and be used for sweeping sign indicating number and location before the product detects.

Compared with the prior art, this application sets up through helium leak detection mechanism and hydrogen leak detection mechanism's cooperation, and the detection of the gas tightness around smooth completion product seals, and the process is concentrated, and the continuity is good for the check-out time of product is short, and then has promoted the detection efficiency and the production efficiency of product.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view showing the structure of a gas tightness detecting apparatus in the present embodiment;

FIG. 2 is a schematic structural view of another view of the air tightness detecting device in the present embodiment;

FIG. 3 is a schematic structural diagram of the code scanning positioning mechanism in the present embodiment;

FIG. 4 is a schematic structural diagram of the shaping mechanism in this embodiment;

FIG. 5 is a schematic structural diagram of a cleaning mechanism according to the present embodiment;

FIG. 6 is a schematic structural diagram of a helium leak detection mechanism in the present embodiment;

FIG. 7 is a schematic diagram showing the internal piping structure of the helium leak detection mechanism in this embodiment;

FIG. 8 is a schematic structural diagram of a jaw assembly of the present embodiment;

fig. 9 is a schematic structural diagram of a hydrogen leak detection mechanism in this embodiment.

Description of reference numerals:

1. a transport mechanism; 11. a feeding assembly; 12. a transfer component; 13. a turnover assembly; 14. a discharge assembly; 141. qualified product discharge drawstrings; 142. discharging a drawing belt of an unqualified product; 15. temporarily storing unqualified products; 2. A helium leakage detection mechanism; 21. a helium detection bearing piece; 22. a trachea connection assembly; 221. the air pipe is communicated with the box; 222. the product air pipe connection; 223. a main pipeline; 224. a first branch line; 225. a second branch pipe; 226. a third branch pipeline; 227. a pressure monitoring member; 228. a vacuum joint; 23. a nitrogen flushing assembly; 231. a nitrogen flushing member; 232. the first control member 2321; a first control valve; 2322. a first pressure sensing member; 24. a helium detection component; 241. a helium detection piece; 2411. a helium line; 242. a second control member; 2421. a second control valve; 2422. a second pressure sensing member; 25. a hydrogen filling component; 251. a hydrogen member; 252. a third control; 2521. a third control valve; 2522. a third pressure sensing member; 26. a jaw assembly; 261. a jaw positioning member; 262. a jaw clamp; 2621. the jaw clamps the driving piece; 2622. a clamping jaw; 263. a jaw member; 2631. a jaw driver; 2632. a jaw knife; 3. a hydrogen leak detection mechanism; 31. a hydrogen leak detection cover; 311. a notch; 32. a product transfer assembly; 321. a transfer drive; 322. a hydrogen detection position jig; 323. a sealing cover; 33. a hydrogen leak detection assembly; 331. a hydrogen leak detection drive member; 332. a hydrogen leak detector; 34. vacuumizing the part; 4. a cleaning mechanism; 41. cleaning the bottom plate; 42. cleaning the sliding plate; 43. a first cleaning drive; 44. Cleaning the bearing table; 45. a second cleaning drive; 46. cleaning the bearing plate; 47. a third cleaning drive member; 48. a cleaning member; 49. a liquid level detection member; 5. a shaping mechanism; 51. shaping the bearing frame; 511. a base plate; 5111. a port; 512. a vertical plate; 52. shaping, clamping and turning; 521. shaping the clamp; 522. shaping the clamping block; 523. a shaping clamping drive; 524. shaping and turning the driving piece; 53. a shaping piece; 531. a roller; 54. a first shaping driver; 55. a second shaping drive; 6. a code scanning positioning mechanism; 61. a code scanning positioning frame; 611. supporting the flat plate; 62. a rotating table; 621. a bearing position; 63. scanning a code positioning driving piece; 64. a position detecting member; 641. a sensor support frame; 65. a code scanning piece; 651. a code scanning bracket; 652. an adjustment member; 6521. adjusting a rod; 6522. an adjusting block; 653. sweep a yard rifle.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified in conjunction with the accompanying drawings as follows:

referring to fig. 1 and 2, fig. 1 is a schematic structural view of the air-tightness detecting apparatus in the present embodiment, and fig. 2 is a schematic structural view of another view of the air-tightness detecting apparatus in the present embodiment. The gas tightness detection device in the present embodiment includes a transmission mechanism 1, a helium leak detection mechanism 2, and a hydrogen leak detection mechanism 3. The transmission mechanism 1 conveys products to sequentially pass through the helium leakage detection mechanism 2 and the hydrogen leakage detection mechanism 3, the helium leakage detection mechanism 2 is used for detecting the air tightness of a product welding part, and the hydrogen leakage detection mechanism 3 is used for detecting the air tightness of the sealed products.

Through helium leak detection mechanism 2 and hydrogen leak detection mechanism 3's cooperation setting, the detection of the gas tightness around the smooth completion product seals, and the process is concentrated, and the continuity is good for the check-out time of product is short, and then has promoted the detection efficiency and the production efficiency of product. The product in this embodiment is a direct current contactor, or a direct current contactor body which is assembled by a push rod group and a porcelain tube.

Referring back to fig. 1 and 2, further, the air-tightness detecting apparatus in the present embodiment further includes a cleaning mechanism 4. The cleaning mechanism 4 is used for cleaning the product before detection, in particular to cleaning an air pipe of the product and removing impurities or dust on the air pipe so as to ensure the accuracy of subsequent air tightness detection of the product; meanwhile, whether the air pipe of the product has cracks or not can be detected, and unqualified products of the air pipe can be removed in advance.

Referring back to fig. 1 and 2, further, the dc contactor of the present embodiment further includes a shaping mechanism 5. The shaping mechanism 5 is used for shaping the product before detection, and particularly shapes the bent gas pipe of the product and other special shapes so that the gas pipe of the product can be accurately connected with the helium leakage detecting mechanism 2 when the gas tightness of the product is detected.

Referring to fig. 1 and fig. 2 again, in the present embodiment, the dc contactor further includes a code scanning positioning mechanism 6. Sweep sign indicating number and location of sweeping before sign indicating number positioning mechanism 6 is used for the product to detect, be provided with the identification code on the product, for example two-dimensional code, to the product detect sweep the sign indicating number be convenient for the management in the gas tightness testing process of product, the location specifically is the location of special-shaped position such as the trachea of product is buckled to the location to the operation of follow-up plastic, make the plastic can just carry out the plastic to tracheal special-shaped department of buckling.

Referring back to fig. 1 and 2, further, the conveying mechanism 1 includes a feeding assembly 11, a transferring assembly 12, an overturning assembly 13, and a discharging assembly 14. The feeding assembly 11, the transfer assembly 12 and the discharging assembly 14 are arranged in sequence, and the overturning assembly 13 is positioned between the transfer assembly 12 and the discharging assembly 14. Preferably, the feeding assembly 11, the transfer assembly 12 and the discharging assembly 14 are all matched with a portal frame, a linear module and a manipulator, the linear module is arranged on the portal frame and drives the manipulator to move linearly, the manipulator can grab or release products, and preferably, the number of the manipulator is multiple, and multiple products can be grabbed and transferred simultaneously; the cooperation of upset subassembly 13 for revolving cylinder and manipulator, the manipulator snatchs the product after, revolving cylinder can overturn the product. When specifically setting up, material loading subassembly 11 and ejection of compact subassembly 14 parallel arrangement respectively are in one side of transfer subassembly 12, and wherein, material loading subassembly 11 is close to in the one end of transfer subassembly 12, and ejection of compact subassembly 14 is close to in the other end of transfer subassembly 12, and upset subassembly 13 is located between tip and the ejection of compact subassembly 14 of transfer subassembly 12.

Sweep a yard positioning mechanism 6 and guiding mechanism 5 and all be located the transfer path of material loading subassembly 11, preferably, sweep a yard positioning mechanism 6 and guiding mechanism 5 and set up in proper order in the direction of transfer of material loading subassembly 11 and be close to the one side of transfer subassembly 12 in material loading subassembly 11. The cleaning mechanism 4 and the helium leak detection mechanism 2 are sequentially arranged along the conveying direction of the transfer component 12, and the number of the hydrogen leak detection mechanisms 3 in the embodiment can be multiple, so that multiple products can be detected; the cleaning mechanism 4 is adjacent to the shaping mechanism 5, and preferably, both ends of the cleaning mechanism 4 are respectively located on the conveying paths of the feeding assembly 11 and the transferring assembly 12. The hydrogen leak detection mechanism 3 is located on the conveyance path of the discharging assembly 14 and adjacent to the inverting assembly 13. Through the arrangement, the process layout of the code scanning positioning mechanism 6, the shaping mechanism 5, the cleaning mechanism 4, the helium leakage detection mechanism 2 and the hydrogen leakage detection mechanism 3 is formed, so that the detection process is smooth, the layout is reasonable, and the occupied area of the whole detection device is saved.

Preferably, a temporary storage position 15 for unqualified products, such as a magazine, is further arranged between the transfer assembly 12 and the discharge assembly 14, and the temporary storage position 15 for unqualified products in the helium leakage detection mechanism 2 is used for storage. Preferably, the discharging assembly 14 further has a qualified product discharging drawstring 141 and an unqualified product discharging drawstring 142, and the qualified product discharging drawstring 141 and the unqualified product discharging drawstring 142 are respectively disposed on one side of the discharging assembly 14 and adjacent to the end of the discharging assembly 14. The discharging assembly 14 respectively places the products on the qualified product discharging drawstring 141 and the unqualified product discharging drawstring 142 according to the detection result of the products, and the qualified product discharging drawstring 141 and the unqualified product discharging drawstring 142 are respectively used for detecting the discharging of qualified products and unqualified products.

With continued reference to fig. 3, fig. 3 is a schematic structural diagram of the code scanning positioning mechanism in the present embodiment. Sweep a yard positioning mechanism 6 and be located the below of the manipulator of material loading subassembly 11, the product of material loading subassembly 11 manipulator centre gripping is transferred to and is swept yard positioning mechanism 6 and go on sweeping yard and location. The code scanning positioning mechanism 6 includes a code scanning positioning frame 61, a rotating table 62, a code scanning positioning driving member 63, a position detecting member 64, and a code scanning member 65. The code scanning positioning frame 61 is located below the manipulator of the feeding assembly 11, and has a supporting plate 611 at the upper end thereof, and the rotating table 62 is rotatably connected to the supporting plate 611 at the upper end of the code scanning positioning frame 61. The code scanning positioning driving member 63 is disposed on the code scanning positioning frame 61 and located below the supporting plate 611, an output end of the code scanning positioning driving member 63 passes through the supporting plate 611 and then is connected to the rotating table 62, the code scanning positioning driving member 63 drives the rotating table 62 to rotate, the rotating table 62 is provided with a bearing position 621 for bearing a product, the bearing position 621 in this embodiment is in a groove shape, and the size and shape of the bearing position 621 are adapted to the product, so that the product can be stably borne on the bearing position 621; products grabbed by the manipulator of the feeding assembly 11 are placed on the bearing position 621 of the rotating table 62, and when the products are placed, the air pipe of the products faces upwards; after the product is placed on the carrying position 621 of the rotating table 62, it can rotate along with the rotation of the rotating table 62. The position detection piece 64 is arranged at the upper end of the code scanning positioning frame 61, the detection end of the position detection piece 64 faces to the position right above the rotating platform 62, and when a product is borne on the rotating platform 62, the position detection piece 64 can be used for detecting an air pipe of the product; in this embodiment, the position detecting element 64 is a correlation type optical fiber sensor, which is disposed on the supporting plate 611 through a sensor supporting frame 641, and the position sensors 64 are disposed on two opposite sides of the rotating platform 62; the preferred position detection pieces 64 are two pairs, and the two pairs of position detection pieces 64 are respectively arranged on four opposite sides of the rotating platform 62, so as to realize accurate detection of the position of the product air pipe, facilitate the management of subsequent detection, and particularly facilitate the determination of the shaping position of the subsequent air pipe. The code scanning component 65 comprises a code scanning bracket 651, an adjusting component 652 and a code scanning gun 653, wherein the lower end of the code scanning bracket 651 is arranged on the supporting plate 611 and is located at one side of the rotating platform 62, the adjusting component 652 is rotatably connected to the upper end of the code scanning bracket 651, the code scanning gun 653 is connected with the adjusting component 652, the code scanning gun 653 is located above the rotating platform 62 and faces the rotating platform 62, so that the code scanning gun 653 can scan and identify the identification code of the product, for example, two-dimensional code reading and scanning, and the adjusting component 652 is used for adjusting the angle of the code scanning gun 653 facing the rotating platform 62, so as to adapt and identify the identification codes at different positions on the product. Specifically, the adjusting member 652 includes an adjusting rod 6521 and an adjusting block 6522, an opening is formed at an end of the adjusting block 6522, the adjusting rod 6521 can rotate in the opening, one end of the adjusting rod 6521 is connected with the code scanning gun 653, the other end of the adjusting rod 6521 is rotatably connected with one end of the adjusting block 6522, which is provided with the opening, the other end of the adjusting block 6522 is connected with an upper end of the code scanning bracket 651, the angle adjustment of the code scanning gun 653 can be completed by rotating the adjusting block 6522, and after the adjustment is completed, the opening of the adjusting block 6522 is fixed by a screw.

With continued reference to fig. 4, fig. 4 is a schematic structural diagram of the shaping mechanism in this embodiment. Furthermore, the shaping mechanism 5 is located below the manipulator of the feeding assembly 11, the product which has been scanned and positioned is moved to the shaping mechanism 5 by the feeding assembly 11, and the shaping mechanism 5 shapes the air pipe of the product. The truing mechanism 5 includes a truing carrier 51, a truing clamp flipper 52, a truing member 53, a first truing drive 54, and a second truing drive 55. The reshaping loading frame 51 has a U-shaped longitudinal section, and includes a bottom plate 511 and two vertical plates 512, wherein the bottom plate 511 is provided with a through hole 5111, and the two vertical plates 512 are vertically arranged on the surface of the bottom plate 511 and are respectively located at two ends of the bottom plate 511. The truing clamp flipper 52 includes a truing clamp 521, a truing clamp block 522, a truing clamp drive 523, and a truing flipper drive 524. Shaping fixture 521 is located between two risers 512, and the both ends of shaping fixture 521 rotate respectively and connect in the upper end of two risers 512, and the product that bears the product bears the weight of the position on shaping fixture 521 has, and the manipulator of material loading component 11 places the product on shaping fixture 521 bears the weight of the position, and the trachea of product is up this moment. The shaping clamping block 522 is slidably connected in the shaping clamp 521 and faces a product bearing position of the shaping clamp 521, the shaping clamping driving member 523 is arranged on the shaping clamp 521, an output end of the shaping clamping driving member 523 is connected with the shaping clamping block 522, the shaping clamping driving member 523 drives the shaping clamping block 522 to linearly move, so that the shaping clamp 521 is close to or far away from the product bearing position, and a product borne by the product bearing position of the shaping clamp 521 is clamped or loosened, and the shaping clamping driving member 523 in the embodiment can adopt an air cylinder. The shaping turning driving member 524 is disposed on an outer wall of one of the vertical plates 512, an output end of the shaping turning driving member 524 is connected to the shaping fixture 521, and the shaping turning driving member 524 drives the shaping fixture 521 to turn. The shaping member 53 is located between the risers 512 and below the reforming fixture 521, the shaping member 53 in this embodiment being a jaw, and the end of the shaping member 53 having a roller 531 pivotally attached thereto. The first shaping driving member 54 is located in the through hole 5111 and is slidably connected to the bottom plate 511, the output end of the first shaping driving member 54 is connected to the shaping member 53, and the first shaping driving member 54 drives the shaping member 53 to perform clamping and releasing actions, wherein the first shaping driving member 54 is a cylinder in this embodiment. The second shaping driving member 55 is disposed on the bottom plate 511, and the output end of the second shaping driving member 55 is connected to the first shaping driving member 54, and the second shaping driving member 55 drives the first shaping driving member 54 to move, so as to drive the shaping member 53 to move, so that the shaping member 53 can move close to or away from the shaping fixture 521, in this embodiment, the second shaping driving member 55 is an air cylinder.

The shaping process of the shaping mechanism 5 is as follows: products grabbed by the manipulator of the feeding assembly 11 are placed in the bearing position of the shaping clamp 521, and the air pipe of the products is upward; then, the shaping clamping driving member 523 drives the shaping clamping block 522 to clamp the product, and then the shaping overturning driving member 524 drives the shaping clamp 521 to overturn, so that the air pipe of the product faces the bottom plate 511; then, the second shaping driving part 55 drives the shaping part 53 to move upwards and close to the product trachea, the first shaping driving part 54 drives the shaping part 53 to clamp the product trachea, specifically, the shaping part 53 is clamped at the position where the trachea is bent upwards, the roller 531 is attached to the trachea, then, the second shaping driving part 55 drives the shaping part 53 to move downwards and far away from the product trachea, and the roller 531 shapes the trachea. After the shaping is completed, the product is turned over again, the air pipe faces upwards, and the product waits to be clamped and moved by the manipulator of the feeding assembly 11.

With continued reference to fig. 5, fig. 5 is a schematic structural diagram of the cleaning mechanism in this embodiment. Further, the cleaning mechanism 4 includes a cleaning base plate 41, a cleaning sliding plate 42, a first cleaning driving member 43, a cleaning loading plate 44, a second cleaning driving member 45, a cleaning loading plate 46, a third cleaning driving member 47, a cleaning member 48, a cleaning liquid storage member (not shown), and a liquid level detecting member 49. The cleaning base plate 41 is disposed below the robot of the transfer unit 12, and has one end extending in a direction toward the loading unit 11. The cleaning sliding plate 42 is slidably connected to the upper surface of the cleaning base plate 41 by the cooperation of the sliding rail and the sliding block. The first cleaning driving member 43 is disposed on the cleaning base plate 41, and an output end of the first cleaning driving member 43 is connected to the cleaning sliding plate 42, which drives the cleaning sliding plate 42 to move linearly, so that the cleaning sliding plate 42 can reciprocate between the transferring assembly 12 and the loading assembly 11. The cleaning bearing table 44 is arranged on the cleaning sliding plate 42 and is positioned at one end of the cleaning sliding plate 42 close to the feeding assembly 11, a product bearing position is arranged on the cleaning bearing table 44, and the shaped product is placed on the bearing position of the cleaning bearing table 44 by a mechanical arm of the feeding assembly 11. The second cleaning driving member 45 is disposed on the cleaning sliding plate 42, the cleaning supporting plate 46 is slidably connected to the cleaning sliding plate 42, the cleaning supporting plate 46 is connected to the output end of the second cleaning driving member 45, and the second cleaning driving member 45 drives the cleaning supporting plate 46 to linearly move, so that the cleaning supporting plate 46 is close to or far away from the product supported by the cleaning supporting plate 44. The third cleaning driving member 47 is disposed on the cleaning bearing plate 46, an output end of the third cleaning driving member 47 is connected to the cleaning member 48, and the third cleaning driving member 47 drives the cleaning member 48 to move linearly along a direction perpendicular to the cleaning bearing plate 44. The cleaning end of the cleaning piece 48 faces to the position right above the bearing position of the cleaning bearing table 44, when a product is borne on the cleaning bearing table 44, the cleaning end of the cleaning piece 48 is opposite to an air pipe of the product, the cleaning bearing plate 46 drives the cleaning piece 48 to move towards the product under the driving of the second cleaning driving piece 45, the cleaning end of the cleaning piece 48 can be attached to the surface of the air pipe of the product, and then under the driving of the third cleaning driving piece 47, the cleaning piece 48 moves up and down on the surface of the air pipe of the product to clean the air pipe of the product; if the air pipe of the product has cracks, bubbles can appear, and the product can be directly judged to be an unqualified product. The first cleaning driving member 43, the second cleaning driving member 45 and the third cleaning driving member 47 can be air cylinders, and the cleaning member 48 can be a brush. Cleaning member 48 and cleaning solution storage member intercommunication have the cleaning solution in the cleaning solution storage member, and the cleaning solution flows to cleaning member 48 and cleans under the effect of external pressure, and the cleaning solution in this embodiment can adopt alcohol, easily volatilizees after the cleanness is accomplished. The liquid level detection piece 49 is communicated with the cleaning liquid storage piece and is used for detecting the liquid level of the cleaning liquid in the cleaning liquid storage piece; the liquid level detecting member 49 in this embodiment may employ a liquid level detecting sensor. The cleaned product is moved to the detection position of the helium leakage detection mechanism 2 by the manipulator of the transfer assembly 12.

With continuing reference to fig. 6 to 8, fig. 6 is a schematic structural diagram of the helium leak detection mechanism in this embodiment, fig. 7 is a schematic structural diagram of an internal pipeline of the helium leak detection mechanism in this embodiment, and fig. 8 is a schematic structural diagram of a jaw assembly in this embodiment. Further, the helium leak detection mechanism 2 includes a helium detection carrier 21, a gas pipe connection assembly 22, a nitrogen flushing assembly 23, a helium detection assembly 24, a hydrogen flushing assembly 25, and a jaw assembly 26. The helium detection bearing part 21 is used for bearing products; the air pipe connecting assembly 22 is communicated with a product carried by the helium test carrying member 21; the nitrogen flushing component 23, the helium detecting component 24 and the hydrogen flushing component 25 are respectively communicated with the gas pipe connecting component 22, the nitrogen flushing component 23 is used for flushing nitrogen of a product, the helium detecting component 24 is used for helium leakage detection of the product, and the hydrogen flushing component 25 is used for flushing hydrogen of the product; the jaw assembly 26 is used for the jaw after the hydrogen gas is filled into the product, i.e. sealing the product, so that the product is in a sealed state.

Specifically, the helium testing carrier 21 is provided with a product carrying position. The cleaned product is moved by the robot of the transfer unit 12 to the product loading position of the helium test carrier 21, with the gas pipe of the product facing downward. The helium detecting bearing piece 21 in this embodiment is an approximately rectangular cylinder, the product bearing position is arranged inside the helium detecting bearing piece 21, when the product is arranged at the product bearing position of the helium detecting bearing piece 21, the outer wall of the helium detecting bearing piece 21 forms a wrapping state on the surface of the product, and a space is arranged between the outer wall of the helium detecting bearing piece 21 and the surface of the product, and the space can be filled with gas.

Gas line connection assembly 22 includes a gas line communication box 221, a product gas line connection 222, a line main 223, a first branch line 224, a second branch line 225, a third branch line 226, and a pressure monitor 227. The gas pipe communication box 221 is located below the helium test bearing member 21, and the gas pipe communication box 221 is fixed to the lower end of the helium test bearing member 21 in a suspended manner through a fixing plate. The number of the product air pipe joints 222 and the number of the pipeline main ways 223 are two, the two product air pipe joints 222 respectively correspond to the two air pipes of the product, and the two product air pipe joints 222 are respectively communicated with the air pipe communication box 221 through the two pipeline main ways 223. A sealing nozzle (not shown) is provided inside each product gas tube connection 222. The product air pipe connection 222 is arranged in the bearing position of the helium testing bearing member 21, when the product is borne on the product bearing position of the helium testing bearing member 21, the two air pipes of the product are respectively and correspondingly inserted into the two product air pipe connection 222 and into the sealing mouths inside the product air pipe connection 222, so that the pipeline main path 223 and the interior of the product form a communication relation, and the sealing mouths ensure the sealing performance of the communication relation. One end of each of the first branch pipeline 224, the second branch pipeline 225 and the third branch pipeline 226 is communicated with the air pipe communication box 221, and further communicated with the interior of the product through the pipeline main path 223 and the product air pipe connection 222. Pressure monitoring spare 227 communicates with trachea intercommunication case 221, and it is used for monitoring trachea intercommunication case 221's pressure value, and then can monitor the inside pressure value of product, and pressure monitoring spare 227 in this embodiment can adopt pressure sensor. Preferably, the air pipe communication box 221 is further communicated with a vacuum joint 228, the vacuum joint 228 is used for pressure relief of the air pipe communication box 221 when the detection device is not used, and the vacuum joint 228 is adopted to ensure that the external space does not enter the air pipe communication box 221 when the detection device is used. In addition, vacuum fittings 228 may also be used at the junctions of the first branch 224, second branch 225, and third branch 226 to prevent external space from entering into the tracheal coupling assembly 22.

The nitrogen flushing assembly 23 includes a nitrogen flushing part 231 and a first control part 232. The nitrogen flushing part 231 is communicated with the air pipe connecting assembly 22, and the first control part 232 is used for controlling the connection and disconnection between the nitrogen flushing part 231 and the air pipe connecting assembly 22. Specifically, the nitrogen flushing member 231 is communicated with the other end of the first branch pipe 224, the nitrogen flushing member 231 is used for providing nitrogen flushed into the first branch pipe 224, and the first control member 232 is used for controlling the communication relationship between the nitrogen flushing member 231 and the first branch pipe 224, so as to control the communication relationship between the nitrogen flushing member 231 and the interior of the product. Specifically, the first control element 232 includes a first control valve 2321 and a first pressure sensing element 2322, the first control valve 2321 and the first pressure sensing element 2322 are both disposed on the first branch pipeline 224, the first control valve 2321 is a pneumatic valve capable of controlling on/off of the first branch pipeline 224 by closing and opening the valve, the first pressure sensing element 2322 is a pressure switch communicated with the first branch pipeline 224 and configured to monitor a pressure value in the first branch pipeline 224, when the pressure value in the first branch pipeline 224 reaches a set value, the pressure switch can send a control signal, and the first control valve 2321 performs opening and closing operations according to the control signal, so as to control on/off of the first branch pipeline 224. The nitrogen flushing member 231 in this embodiment may be a nitrogen gas cylinder.

The helium testing assembly 24 includes a helium testing member 241 and a second control member 242. The helium detecting element 241 is communicated with the air pipe connecting assembly 22, and the second control element 242 is used for controlling the connection and disconnection between the helium detecting element 241 and the air pipe connecting assembly 22. Specifically, the helium detecting element 241 is communicated with the other end of the second branch pipeline 225, and the helium detecting element 241 is a helium mass spectrometer and has a vacuum pumping function, a helium spraying function and a helium detecting function; specifically, the helium detecting element 241 is also communicated with the space between the outer wall of the helium detecting carrier 21 and the surface of the product through a helium pipeline 2411, and helium gas can be sprayed and vacuum can be drawn in the space. The helium detector 241 is communicated with the gas pipe communication box 221 through the second branch pipe 225, and can detect helium applied to the second branch pipe 225, that is, the helium detection function, and meanwhile, the helium detector 241 can also vacuumize the second branch pipe 225. The second control element 242 is used for controlling the communication relationship between the helium detecting element 241 and the second branch pipeline 225, and further controlling the communication relationship between the helium detecting element 241 and the interior of the product. Specifically, the second control element 242 includes a second control valve 2421, the second control valve 2421 is disposed on the second branch pipe 225, and the second control valve 2421 controls the on-off state of the second branch pipe 225 according to the monitoring value of the pressure monitoring element 227. The second control element 242 further comprises a second pressure sensing element 2422, the second pressure sensing element 2422 is disposed in the helium line 2411; the helium detector 241 controls the on and off of the vacuum pumping function of the helium pipeline 2411 according to the pressure value of the second pressure sensing element 2422.

The hydrogen flushing assembly 25 includes a hydrogen flushing member 251 and a third control member 252. The hydrogen flushing member 251 is communicated with the gas pipe connecting assembly 22, and the third control member 252 is used for controlling the connection and disconnection between the hydrogen flushing member 251 and the gas pipe connecting assembly 22. Specifically, the hydrogen flushing member 251 is communicated with the other end of the third branch pipe 226, the hydrogen flushing member 251 is used for providing hydrogen flushing into the third branch pipe 226, and the third control member 252 is used for controlling the communication relationship between the hydrogen flushing member 251 and the third branch pipe 226, so as to control the communication relationship between the hydrogen flushing member 251 and the interior of the product. Specifically, the third control element 252 includes a third control valve 2521 and a third pressure sensing element 2522, the third control valve 2521 and the third pressure sensing element 2522 are disposed on the third branch pipe 226, and the control principles of the third control valve 2521 and the third pressure sensing element 2522 are the same as those of the first control valve 2321 and the first pressure sensing element 2322, which are not repeated herein.

The jaw assembly 26 includes a jaw positioning member 261, a jaw gripping member 262, and a jaw member 263. The jaw positioning member 261 and the jaw member 263 are respectively disposed around the jaw clamping member 262, the jaw clamping member 262 is used for fixing and clamping the product before the jaw, the jaw positioning member 261 is used for positioning the product before the jaw, and the jaw member 263 is used for clamping the product. Specifically, the jaw positioning member 261, the jaw clamping member 262 and the jaw member 263 are all disposed at the upper end of the helium testing carrier 21, wherein; the jaw clamping member 262 is located above the jaw member 363, the jaw clamping member 262 includes a jaw clamping driving member 2621 and a jaw 2622, initially, the jaw 2622 is opened, and after the product is placed on the product bearing position of the helium test carrier 21, the jaw clamping driving member 2621 drives the jaw 2622 to clamp the product, so that the product is stably borne on the product bearing position of the helium test carrier 21, and the jaw clamping driving member 2621 in this embodiment is an air cylinder. The jaw positioning member 261 is disposed on the helium testing carrier 21 and located on one side of the product bearing position of the helium testing carrier 21, and after the product is borne on the product bearing position of the helium testing carrier 21, the jaw positioning member 261 faces the trachea of the product. The jaw member 263 is disposed on the helium testing carrier 21 and located at the other side of the product carrying position of the helium testing carrier 21, the jaw member 263 includes a jaw driving member 2631 and a jaw knife 2632, the jaw knife 2632 is opposite to the jaw positioning member 261, and the air tube of the product is located between two cutters of the jaw knife 2632. The jaw driving unit 2631 drives the jaw knife 2632 to clamp the air tube of the product for detecting air tightness, and the flushed hydrogen is sealed in the product. The jaw driver 2631 in this embodiment may employ a hydraulic pump.

The air tightness detection process before the product sealing in the embodiment is as follows: the interior of the product is communicated with a main pipeline 223 through a product air pipe and air pipe connecting part 222.

In the first step, the first control valve 2321 is opened, and the second control valve 2421 and the third control valve 2521 are closed, so that the nitrogen flushing member 231 sequentially passes through the first branch pipeline 224, the air pipe communication box 221 and the pipeline main pipeline 223 to form a communication relationship with the interior of the product, the nitrogen flushing member 231 flushes nitrogen gas towards the interior of the product, the pressure value detected by the first pressure sensing member 2322 continuously rises along with the addition of the nitrogen gas, and when the interior of the product is filled with the nitrogen gas, the first pressure sensing member 2322 reaches a set value, and the first control valve 2321 is closed.

Secondly, when the first control valve 2321 is closed, the second control valve 2421 is opened, so that the helium detector 241 sequentially passes through the second branch pipeline 225, the air pipe communication box 221 and the pipeline main pipeline 223 to form a communication relation with the interior of the product, at this time, the vacuumizing function of the helium detector 241 on the second branch pipeline 225 is started, nitrogen in the product is exhausted, oxygen in the product is exhausted at the same time, so that the interior of the product is vacuumized, when the pressure monitoring part 227 cannot detect the pressure, the interior of the product is vacuumized, and at this time, the second control valve 2421 is closed.

And thirdly, repeating the first step and the second step to ensure that the oxygen in the product is exhausted.

Fourthly, the helium spraying function of the helium detector 241 is started, helium is sprayed to the outside of the product through the helium pipeline 2411, so that helium is wrapped around the product, meanwhile, the second control valve 2421 is opened, the vacuumizing function of the helium detector 241 on the second branch pipeline 225 is started, the pressure monitoring part 227 starts to monitor helium inside the air pipe communication box 221, because the inside of the product is in a vacuum state at this time, if the air tightness problem exists, helium outside the product enters the inside of the product through the air seam of the product under the action of atmospheric pressure, helium appears in the air pipe communication box 221 communicated with the inside of the product, if the helium detector 241 detects helium, the product has the air tightness problem, and as an unqualified product, the second control valve 2421 is closed, the manipulator of the transfer component 12 grabs the product to move out as a helium leakage detection unqualified product, and places the helium detection product at the temporary storage position 15, if the helium detector 241 cannot detect helium, the airtightness of the product is qualified, and the next step is executed. In a specific application, a set value can be determined in the helium mass spectrometer, and when the helium gas detected by the helium mass spectrometer exceeds the set value, the product is unqualified, otherwise, the product is qualified.

And fifthly, closing the second control valve 2421, opening the third control valve 2521, so that the hydrogen filling member 251 sequentially passes through the third branch pipeline 226, the air pipe communication tank 221 and the pipeline main pipeline 223 to form a communication relationship with the interior of the product, filling hydrogen into the product from the hydrogen filling member 251, and after the product is filled with hydrogen, enabling the third pressure sensing member 2522 to reach a set value and closing the third control valve 2521.

Sixthly, the jaw driving unit 2631 drives the jaw knife 2632 to clamp the air tube of the product with the air tightness detected, and the flushed hydrogen is sealed in the product.

Therefore, the processes of air tightness detection, hydrogen filling, jaw opening and the like of the product can be completed through the helium leakage detection mechanism, the continuity is high, and the detection speed is high.

Preferably, the above process may further include:

seventhly, the helium detector 241 starts the vacuum pumping function of the helium pipeline 2411 to exhaust the gas outside the product, and when the second pressure sensing part 2422 cannot detect the pressure, the gas outside the product is exhausted, and the vacuum pumping function of the helium detector 241 is closed.

After the jaw opening is completed, the product is grabbed onto the turnover assembly 13 by the manipulator of the transfer assembly 12, and after the turnover assembly 13 overturns the product for 180 degrees, the product is grabbed onto the hydrogen leakage detection mechanism 3 by the manipulator of the discharge assembly 14. With continued reference to fig. 9, fig. 9 is a schematic structural view of the hydrogen leak detection mechanism in this embodiment. Further, the hydrogen leak detection mechanism 3 includes a hydrogen leak detection cover 31, a product transfer assembly 32, a hydrogen leak detection assembly 33, and a vacuum pump 34. The product transferring assembly 32 transfers the product into the hydrogen leakage detecting cover 31; the hydrogen leak detection assembly 33 is arranged in the hydrogen leak detection cover 31; the evacuation member 34 communicates with the hydrogen leak detection cover 31. The hydrogen leak detection cover 31 is a rectangular cover body, and a side plate is omitted from the hydrogen leak detection cover 31 in fig. 9 for the purpose of facilitating understanding of the structure of the hydrogen leak detection mechanism. One of the side plates of the hydrogen leak detection cover 31 has a notch 311. The product transferring assembly 32 is arranged in the hydrogen leakage detecting cover 31, specifically, the product transferring assembly 32 comprises a transferring driving member 321, a hydrogen detecting position jig 322 and a sealing cover 323, the transferring driving member 321 is arranged on the surface of the lower plate of the hydrogen leakage detecting cover 31, the output end of the transferring driving member 321 is connected with the hydrogen detecting position jig 322, the transferring driving member 321 is used for driving the hydrogen detecting position jig 322 to enter or move out of the hydrogen leakage detecting cover 31, the size and shape of the sealing cover 323 are consistent with the notch 311, the sealing cover 323 is arranged at the end part of the hydrogen detecting position jig 322, when the transfer driving unit 321 drives the hydrogen detection positioning jig 322 to move into the hydrogen leakage detection cover 31, the seal cap 323 seals the notch 311, so that the entire hydrogen leak detection cap 31 forms a closed space, when the transfer driving unit 321 drives the hydrogen detection positioning jig 322 to move out of the hydrogen leakage detection cover 31, the manipulator of the discharging assembly 14 grabs the product and places the product on the product bearing position of the hydrogen verification position jig 322; the transfer drive 321 in this embodiment may be a linear die set or a translation cylinder. The hydrogen leakage detection assembly 33 comprises a hydrogen leakage detection driving piece 331 and a hydrogen leakage detection piece 332, the hydrogen leakage detection driving piece 331 is located in the hydrogen leakage detection cover 31 and is arranged on a side plate opposite to the notch 311, the output end of the hydrogen leakage detection driving piece 331 is connected with the hydrogen leakage detection piece 332, and the hydrogen leakage detection driving piece 331 drives the hydrogen leakage detection piece 332 to be close to or far away from a product on a product bearing position of the hydrogen detection position jig 322. Whether the product leaks hydrogen or not is detected through the hydrogen leakage detecting piece 332, and the hydrogen leakage detecting driving piece 331 drives the hydrogen leakage detecting piece 332 to be close to the product for detection so as to ensure the detection accuracy. The hydrogen leak detection driving member 331 in this embodiment is a cylinder, and the hydrogen leak detection member 332 is a hydrogen detector detection head which is communicated with the hydrogen detector 30 provided on the hydrogen leak detection mechanism 3 side. Specifically, the hydrogen analyzer 30 measures the hydrogen leakage rate, and the qualified product has a set value, and when the hydrogen leakage rate of the product is below the set value, the product is determined as a qualified product, otherwise, the product is determined as a defective product. The vacuumizing piece 34 is a vacuumizing instrument, and is communicated with the vacuumizing end and the inside of the hydrogen leakage detecting cover 31, so that the hydrogen leakage detecting cover 31 is in a vacuum state, and the influence of other gases on hydrogen leakage detection is avoided. After the detection is finished, the transfer driving member 321 drives the hydrogen detection position jig 322 to move out of the hydrogen leakage detection cover 31; and (3) detecting qualified products, grabbing and placing the qualified product discharge pull belt 141 by the manipulator of the discharge assembly 14, or placing the qualified product discharge pull belt 142 on the unqualified product discharge pull belt.

After the product in this embodiment is sealed, the air tightness detection process further includes the following steps: the nipped product is gripped by the robot of the discharging assembly 14 and placed in the product bearing position of the hydrogen verification position jig 322. When the transfer driving member 321 drives the hydrogen detection positioning jig 322 to move into the hydrogen leakage detection cover 31, the sealing cover 323 seals the notch 311, so that the product is sealed in the hydrogen leakage detection cover 31. The vacuum pumping part 34 pumps out the air of the hydrogen leakage detection cover 31, the hydrogen leakage detection driving part 331 drives the hydrogen leakage detection part 332 to be close to the product pair, and the hydrogen leakage detection is carried out outside the product.

To sum up, the gas tightness check out test set in this embodiment passes through helium leak detection mechanism and hydrogen leak detection mechanism's cooperation setting, and the detection of the gas tightness around smooth completion product seals, and the process is concentrated, and the continuity is good for the check-out time of product is short, and then has promoted the detection efficiency and the production efficiency of product. In addition, the air pipes of the products are shaped, cleaned and cracked before detection, so that the accuracy of subsequent detection is ensured, unqualified products of the air pipes are timely removed, and the detection procedures are saved.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (14)

1. The air tightness detection device is characterized by comprising a transmission mechanism (1), a helium leakage detection mechanism (2) and a hydrogen leakage detection mechanism (3); the transmission mechanism (1) transmits products to sequentially pass through the helium leak detection mechanism (2) and the hydrogen leak detection mechanism (3); the helium leakage detection mechanism (2) is used for detecting the air tightness of the welding position of the product; and the hydrogen leakage detection mechanism (3) is used for detecting the air tightness of the sealed product.

2. The tightness detection device according to claim 1, characterized in that said helium leak detection mechanism (2) comprises a helium detection carrier (21), a nitrogen flushing assembly (23) and a helium detection assembly (24); the helium detection bearing piece (21) is used for bearing the product; the nitrogen flushing assembly (23) and the helium detection assembly (24) are respectively communicated with the product carried by the helium detection carrier (21); the nitrogen flushing component (23) is used for exhausting gas inside the product, and the helium detecting component (24) is used for helium leakage detection of the product.

3. The tightness detection device according to claim 2, characterized in that said helium leak detection mechanism (2) further comprises a gas pipe connection assembly (22); the gas pipe connecting component (22) is communicated with the product carried by the helium test carrying component (21); the nitrogen flushing assembly (23) and the helium detecting assembly (24) are communicated with the product through the air pipe connecting assembly (22) respectively.

4. The tightness detection device according to claim 3, characterized in that said helium leak detection mechanism (2) further comprises a hydrogen flushing gas assembly (25) and a jaw assembly (26); the hydrogen flushing component (25) flushes hydrogen of the product after helium leak detection; the jaw assembly (26) is used for sealing the product after being flushed with hydrogen.

5. The tightness detection device according to claim 3, characterized in that said nitrogen flushing assembly (23) comprises a nitrogen flushing member (231); the nitrogen flushing member (231) is in communication with the gas tube connection assembly (22) for filling the product with nitrogen gas.

6. The tightness detection device according to claim 3, characterized in that said helium test assembly (24) comprises a helium test element (241); the helium detection piece (241) is communicated with the air pipe connecting assembly (22) and is used for spraying nitrogen outside the product and performing helium detection on the inside of the product.

7. The tightness detection device according to claim 4, characterized in that said hydrogen flushing assembly (25) comprises a hydrogen flushing member (251); the hydrogen filling piece (251) is communicated with the gas pipe connecting assembly (22) and is used for filling hydrogen into the helium qualified product.

8. The tightness detection device according to claim 4, characterized in that said jaw assembly (26) comprises a jaw positioning member (261), a jaw gripping member (262) and a jaw member (263); the jaw positioning piece (261) and the jaw piece (263) are respectively arranged around the jaw clamping piece (262); the product is clamped by the clamping piece (262) of the jaw, the positioning piece (261) of the jaw is used for positioning the product before the jaw, and the jaw piece (263) is used for clamping the product.

9. The airtightness detection apparatus according to claim 1, wherein the hydrogen leak detection mechanism (3) includes a hydrogen leak detection cover (31) and a hydrogen leak detection assembly (33); the hydrogen leak detection assembly (33) is disposed within the hydrogen leak detection cover (31).

10. The airtightness detection apparatus according to claim 9, wherein the hydrogen leak detection mechanism (3) further comprises a product transfer member (32); the product transfer assembly (32) transfers the product into the hydrogen leak detection cover (31).

11. The airtightness detection apparatus according to claim 10, wherein the hydrogen leak detection mechanism (3) further comprises a vacuum-pumping member (34); the vacuum-pumping member (34) communicates with the hydrogen leak detection cover (31).

12. The tightness detection device according to any one of claims 1 to 11, characterized in that it further comprises a cleaning mechanism (4); the cleaning mechanism (4) is used for cleaning before the product detection.

13. The tightness detection device according to any one of claims 1 to 11, characterized in that it further comprises a shaping mechanism (5); the shaping mechanism (5) is used for shaping the product before detection.

14. The tightness detection device according to any one of claims 1 to 11, characterized in that it further comprises a code-scanning positioning mechanism (6); the code scanning and positioning mechanism (6) is used for scanning and positioning the product before detection.

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