CN212300748U

CN212300748U - Fixture for leak detection of automobile heat exchanger and leak detection device

Info

Publication number: CN212300748U
Application number: CN202021196730.0U
Authority: CN
Inventors: 张果; 蓝峰; 李健; 雷福元; 瞿骑龙; 王华仙
Original assignee: Ulvac Orient Chengdu Co Ltd
Current assignee: Ulvac Orient Chengdu Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-01-05
Anticipated expiration: 2030-06-24

Abstract

The utility model discloses an anchor clamps and leak hunting device for auto heat exchanger leak hunting, include the support, install the support baffle in the support and place the work piece tray on the support baffle, be provided with on the work piece tray with the standing groove and the takeover hole of heat exchanger lower surface looks adaptation, also set up the takeover hole with auto heat exchanger lower surface looks adaptation on the support baffle, support upper portion is provided with a plurality of and the corresponding last sealing head group of auto heat exchanger upper surface interface, and is a plurality of last sealing head group installs on the anchor clamps roof, the anchor clamps roof is installed on support upper portion through last cylinder, the support lower part is provided with a plurality of and the corresponding lower sealing head group of auto heat exchanger lower surface interface, and is a plurality of lower sealing head group is installed in the support lower part through lower cylinder group. Its simple structure carries out special fixed and leak hunting to automobile heat exchanger, fixes a position accurately, easy operation, and is efficient, great improvement production efficiency.

Description

Fixture for leak detection of automobile heat exchanger and leak detection device

Technical Field

The utility model relates to a detection device technical field especially relates to an automobile heat exchanger is anchor clamps and leak hunting device for leak hunting.

Background

The automobile heat exchanger is an important component of an automobile, and mainly exchanges heat with an external heat source through the flowing of an internal medium to take away heat.

Therefore, the sealing performance of the automobile heat exchanger is a very important quality index, if the automobile heat exchanger is damaged, cracks and the like cause poor sealing, the purpose of heat exchange can not be achieved, and meanwhile, the automobile can be damaged. However, the structure of the heat exchanger of the automobile is complex, and the heat exchanger has a large number of interfaces, and the existing leakage detection method is to assemble the heat exchanger, seal each hole, and then perform pressurization or helium leakage detection on the interior of the heat exchanger. The leakage detection of the base body cannot be independently carried out, and the efficiency is influenced by repeated disassembly and assembly.

As shown in the heat exchanger of FIG. 8, it can be seen that the interfaces of the heat exchanger are very many, the sizes of the pipe orifices are different, the upper surface and the lower surface are provided with the interfaces and the protrusions, the shapes of the interfaces are uneven, welding can cause residual welding liquid and the like on the heat exchanger, the surfaces of the heat exchanger are difficult to clean, the interfaces need to be polished, and the like, so that the heat exchanger is difficult to operate, very low in efficiency and not beneficial to batch production. How to realize once sealing whole mouths of pipe in a detection work flow can effectively save the leak detection time and greatly submit the leak detection efficiency of the heat exchanger.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a special fixture and leak hunting device of auto heat exchanger leak hunting, this anchor clamps are through unique design and drunkenness cooperation, fine solution above-mentioned problem, carry out special fixed and leak hunting to auto heat exchanger, fix a position accurately, easy operation, efficient, great improvement production efficiency.

The technical scheme of the utility model is an anchor clamps for heat exchanger leak hunting of automobile, including the support, install the support baffle in the support and place the work piece tray on the support baffle, be provided with on the work piece tray with the standing groove and the takeover hole of heat exchanger lower surface looks adaptation, also set up the takeover hole with heat exchanger lower surface looks adaptation on the support baffle, support upper portion is provided with a plurality of and the corresponding last sealing head group of heat exchanger upper surface interface of automobile, and is a plurality of it installs on the anchor clamps roof to go up sealing head, the anchor clamps roof is installed on support upper portion through last cylinder, the support lower part is provided with a plurality of and the corresponding lower sealing head group of heat exchanger lower surface interface of automobile, and is a plurality of lower sealing head group is installed in the support lower part through lower cylinder group.

Further, the upper sealing head group comprises a horizontal sealing head and a plurality of upper vertical sealing heads with 45-degree sealing heads, and the horizontal sealing head is used for sealing a horizontal hole of the heat exchanger to be tested; the 45-degree sealing head is used for sealing a 45-degree hole of the heat exchanger to be tested; the upper vertical sealing head is used for sealing an upper vertical hole of the heat exchanger to be tested.

Further, the lower sealing head group comprises a first lower vertical sealing head and a second lower vertical sealing head; the first lower vertical seal head and the second lower vertical seal head are controlled by a lower cylinder bank.

Furthermore, a positioning rod is arranged on the top plate of the clamp, and a positioning hole matched with the positioning rod is arranged on the workpiece tray.

Furthermore, the upper sealing head is connected with the clamp top plate through a top piston, and a compression spring is further arranged between the upper sealing head and the top piston.

Further, the upper sealing head comprises a straight sealing head and an inclined sealing head, wherein the straight sealing head faces vertically downwards.

Further, tray baffles are arranged on two sides of the supporting guide plate, and side rollers matched with the tray baffles are arranged on two sides of the workpiece tray.

Furthermore, a rolling guide rail is further embedded on the supporting guide plate, and a return spring is arranged between the rolling guide rail and the supporting guide plate.

Furthermore, a telescopic cylinder is connected to one side of the workpiece tray and is arranged in parallel with the rolling guide rail.

The utility model also provides an automotive heat exchanger leak hunting device has foretell automotive heat exchanger anchor clamps for leak hunting.

Further, the support is a vacuum box, and the support guide plate is arranged in the support box.

Furthermore, an air inlet is formed in the lower sealing head.

The utility model has the advantages that:

1) the utility model discloses to automobile heat exchanger's shape and structural feature, special leak hunting anchor clamps have been designed, make automobile heat exchanger can be accurate place in the work piece tray, then through the pushing down of upper cylinder and the rising of lower cylinder group, make upper seal head and lower seal head respectively with the takeover of automobile heat exchanger upper surface and lower surface carry out butt joint sealing, reach sealed effect, accomplish automobile heat exchanger's sealed and clamping once, changed the current mode of operation of welding respectively or shutoff interface, great improvement the efficiency of leak hunting, the location is accurate, easy operation;

2) the utility model discloses an automotive heat exchanger leak hunting device is applicable to automotive heat exchanger's gaseous leak hunting mode, if helium leak hunting, utilizes in the vacuum chamber the utility model discloses an automotive heat exchanger leak hunting anchor clamps carry out the clamping shutoff to automotive heat exchanger, be that automotive heat exchanger forms one with the independent closed environment of vacuum chamber, then the rethread inlet port lets in leak hunting gas such as helium to automotive heat exchanger inside, whether has the leak hunting gas through checking the vacuum chamber, can judge automotive heat exchanger's the sealed condition, the clamping is fixed convenient, and the shutoff is tight, and the inspection is swift efficient.

Drawings

FIG. 1 is a front view of a first embodiment of the present invention;

FIG. 2 is a schematic perspective view of a first embodiment of the present invention (without a supporting guide plate and a work tray);

fig. 3 is a schematic view of a structure of an upper sealing head set according to an embodiment of the present invention;

fig. 4 is a schematic view of another view structure of the upper sealing head set according to the embodiment of the present invention;

fig. 5 is a schematic view of a lower seal head set according to an embodiment of the present invention;

fig. 6 is a schematic view of another view structure of the lower seal head set according to the embodiment of the present invention;

fig. 7 is a schematic perspective view of a workpiece tray according to a first embodiment of the present invention;

fig. 8 is a schematic perspective view of a workpiece tray and a heat exchanger according to a first embodiment of the present invention;

FIG. 9 is a schematic bottom view of FIG. 8;

fig. 10 is a schematic perspective view of a second embodiment of the present invention;

fig. 11 is a schematic perspective view of a workpiece tray according to a second embodiment of the present invention;

fig. 12 is a schematic perspective view of a supporting guide plate according to a second embodiment of the present invention;

fig. 13 is a schematic perspective view of a third embodiment of the present invention;

in the figure: 1. a support; 2. supporting the guide plate; 3. a workpiece tray; 4. a placement groove; 5. a pipe connecting hole; 6. an upper seal head group; 7. a clamp top plate; 8. an upper cylinder; 9. a lower seal head group; 10. descending a cylinder group; 11. positioning a rod; 12. positioning holes; 13. a top piston; 14. a compression spring; 15. a tray baffle; 16. a side roller; 17. a rolling guide rail; 18. a return spring; 19. a telescopic cylinder; 20. a buffer block; 21. a workpiece positioning pin; 22. a vacuum box; 23. and (4) air inlet holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the utility model is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows: as shown in fig. 1-5, the utility model provides a fixture for leak detection of an automobile heat exchanger, which comprises a bracket 1, a supporting guide plate 2 arranged in the bracket 1 and a workpiece tray 3 arranged on the supporting guide plate 2, a placing groove 4 and a connecting pipe hole 5 which are matched with the lower surface of the heat exchanger are arranged on the workpiece tray 3, the supporting guide plate 2 is also provided with a connecting pipe hole 5 matched with the lower surface of the automobile heat exchanger, a plurality of upper sealing head groups 6 corresponding to the upper surface interfaces of the automobile heat exchanger are arranged at the upper part of the bracket 1, the upper sealing head groups 6 are arranged on a clamp top plate 7, the clamp top plate 7 is installed on the upper portion of the support 1 through the upper air cylinder 8, a plurality of lower sealing head groups 9 corresponding to interfaces on the lower surface of the automobile heat exchanger are arranged on the lower portion of the support 1, and the lower sealing head groups 9 are installed on the lower portion of the support 1 through the lower air cylinder groups 10.

The supporting guide plate 2 is used for supporting the workpiece tray 3, the workpiece tray 3 is used for placing an automobile heat exchanger needing to be detected, and the workpiece tray 3, the placing groove 4 and the pipe connecting hole 5 on the supporting guide plate 2 are matched with the shape of the heat exchanger needing to be detected, so that the heat exchanger can be placed and detected conveniently. The upper sealing head group 6 and the lower sealing head group 9 respectively correspond to pipe orifices on the upper surface and the lower surface of the heat exchanger and are used for sealing the corresponding pipe orifices, as shown in fig. 3-6, the upper sealing head group 6 comprises a horizontal sealing head 6.1 and a plurality of upper vertical sealing heads 6.3 of a 45-degree sealing head 6.2, and the horizontal sealing head 6.1 is used for sealing a horizontal hole of the heat exchanger to be tested; the 45-degree sealing head 6.2 is used for sealing a 45-degree hole of the heat exchanger to be tested; the upper vertical sealing head 6.3 is used to seal the upper vertical hole of the heat exchanger to be tested.

The lower sealing head group 9 comprises a first lower vertical sealing head 9.1 and a second lower vertical sealing head 9.2; the first lower vertical sealing head 9.1 and the second lower vertical sealing head 9.2 are controlled by a lower cylinder group 10.

And the upper air cylinder 8 and the lower air cylinder group 10 are respectively connected with the upper sealing head group 6 and the lower sealing head group 9, so that the upper sealing head group 6 and the lower sealing head group 9 have the telescopic capacity, the upper sealing head group 6 and the lower sealing head group 9 are respectively sealed or far away from the heat exchanger, and the bracket 1 is used for supporting the upper air cylinder 8, the lower air cylinder group 10 and the supporting guide plate 2. The lower sealing head group 9 pushed by the lower cylinder group 10 needs to sequentially pass through the support guide plate 2 and the pipe connecting hole 5 on the workpiece tray 3 to be in butt joint sealing with the lower pipe opening of the heat exchanger.

During the use, place the corresponding position on the work piece tray 3 with heat exchanger, then place the corresponding position of supporting guide 2 together in work piece tray 3, then go up sealing head group 6 and lower sealing head group 9 and respectively under the promotion of last cylinder 8 and lower cylinder group 10, be close to heat exchanger, a plurality of upper sealing head groups 6 and lower sealing head group 9 respectively with the interface butt joint seal that corresponds, accomplish promptly that the clamping is sealed to heat exchanger, the clamping is convenient and fast.

And a positioning rod 11 is arranged on the clamp top plate 7, and a positioning hole 12 matched with the positioning rod 11 is arranged on the workpiece tray 3. The quick location of sealing head group 6 is pushed down in the convenience, can avoid the uneven aversion of atress when last sealing head group 6 pushes down simultaneously of heat exchanger. The three locating rods 11 are arranged in a triangular mode, and displacement of the heat exchanger is avoided. The lower sealing head group 9 needs to sequentially pass through the support guide plate 2 and the pipe connecting hole 5 on the workpiece tray 3 to be in butt joint sealing with the lower pipe opening of the heat exchanger, and the heat exchanger can also be positioned, so that the lower sealing head group 9 can be accurately in butt joint with the interface of the heat exchanger.

The upper sealing head group 6 is connected with the clamp top plate 7 through a top piston 13, and a compression spring 14 is further arranged between the upper sealing head group 6 and the top piston 13. The top piston 13 has different lengths to accommodate different height interfaces. The compression spring 14 has a certain buffering effect, so that the situation that the position between the sealing head and the interface is not opposite to cause extrusion damage is avoided. The upper sealing head group 6 and the lower sealing head group are provided with sealing rings, so that the sealing is tighter.

The upper sealing head group 6 comprises a straight sealing head and an inclined sealing head which are vertically downward. The shape and the design position of the sealing head are correspondingly arranged according to the position and the shape of the interface on the heat exchanger.

In the second embodiment, as shown in fig. 6-8, on the basis of the first embodiment, tray baffles 15 are arranged on both sides of the supporting guide 2, and side rollers 16 adapted to the tray baffles 15 are arranged on both sides of the workpiece tray 3. The tray baffle 15 is convenient for the workpiece tray 3 to be accurately placed on the supporting guide plate 2, and has a constraint effect on two sides of the workpiece tray 3; and the side sliding wheel can well slide on the tray baffle plate 15, so that the workpiece tray 3 can slide on the supporting guide plate 2 conveniently, and the workpiece tray 3 is prevented from impacting the supporting guide plate 2. The support guide plate 2 is also embedded with a rolling guide rail 17, and a return spring 18 is arranged between the rolling guide rail 17 and the support guide plate 2. That is, the rolling guide rail 17 is installed in the groove on the upper surface of the supporting guide plate 2, when no article is placed on the supporting guide plate 2 or only the workpiece tray 3 and the heat exchanger to be tested are placed, the upper surface of the rolling guide rail 17 is higher than the upper surface of the supporting guide plate 2, the workpiece tray 3 slides on the rolling guide rail 17 to enter the supporting guide plate 2, when the upper sealing head group 6 is pressed down, the reset spring 18 below the rolling guide rail 17 is further compressed, the rolling guide rail 17 is pressed into the supporting guide plate 2, at the moment, the workpiece tray 3 is in contact with the upper surface of the supporting guide plate 2, and the phenomenon that the rolling guide rail 17 and the like are deformed and damaged due to overlarge pressure is avoided. And one side of the workpiece tray 3 is also connected with a telescopic cylinder 19, and the telescopic cylinder 19 is arranged in parallel with the rolling guide rail 17. The telescopic cylinder 19 is used for pulling the workpiece tray 3, so that the workpiece tray 3 can automatically enter or move out of the supporting guide plate 2, and at the moment, the outer side of the supporting guide plate 2 can be externally connected with a guide rail corresponding to the rolling guide rail 17 on the supporting guide plate 2, so that the workpiece tray 3 can conveniently enter and move out.

The workpiece tray 3 is further provided with a buffer block 20 for buffering to prevent the workpiece tray 3 from directly impacting other parts. The workpiece tray 3 is also provided with a workpiece positioning pin 21, which is convenient for quick positioning of the heat exchanger.

As shown in fig. 9, on the basis of the first embodiment and the second embodiment, the utility model also provides an automobile heat exchanger leak detection device, which is provided with the above-mentioned fixture for detecting leak of an automobile heat exchanger. The support 1 is a vacuum box 22, and the support guide plate 2 is arranged in the support box. An air inlet 23 is arranged on the lower sealing head group 9.

Namely, the clamp for leak detection of the automobile heat exchanger is arranged in the vacuum box 22, the supporting guide plate 2 is arranged on the bottom plate of the vacuum box 22, the clamp top plate 7, the upper sealing head group 6 and the lower sealing head group 9 are all positioned in the vacuum box 22, and sealing rings are arranged between the upper air cylinder 8, the lower air cylinder group 10, the telescopic air cylinder 19 and the vacuum box 22, so that the sealing degree of the vacuum box 22 is ensured.

The heat exchanger to be tested is firstly placed at the corresponding position of the workpiece tray 3, then the workpiece tray 3 and the heat exchanger enter the corresponding position on the supporting guide plate 2 through the rolling guide rail 17 and the side roller 16 under the pulling of the telescopic cylinder 19, at the moment, the vacuum box 22 is closed, the upper sealing head group 6 is pressed downwards and the lower sealing head group 9 is lifted, the corresponding heat exchanger interface is in butt joint sealing, the heat exchanger is sealed, helium or other detection gas is introduced into the air inlet 23 of the lower sealing head group 9, then whether leaked detection gas exists in the vacuum box 22 or not is detected, and whether the heat exchanger is sealed tightly or not can be judged. The detection mode is simple and quick, the heat exchanger is clamped, fixed and sealed stably, the heat exchanger cannot be damaged, and the detection efficiency is improved.

The utility model discloses to automobile heat exchanger's shape and structural feature, special leak hunting anchor clamps have been designed, make automobile heat exchanger can be accurate place in the work piece tray 3, then through the pushing down of upper cylinder 8 and the rising of lower cylinder group 10, make upper seal head group 6 and lower seal head group 9 respectively with the takeover of automobile heat exchanger upper surface and lower surface butt joint sealed, reach sealed effect, accomplish automobile heat exchanger's sealing and clamping once, the operating mode who has changed present respectively welding or shutoff interface, the efficiency of leak hunting has been greatly improved, the location is accurate, easy operation; the utility model discloses an automotive heat exchanger leak hunting device is applicable to automotive heat exchanger's gas leak hunting mode, if helium leak hunting, utilizes in vacuum box 22 the utility model discloses an automotive heat exchanger leak hunting anchor clamps carry out the clamping shutoff to automotive heat exchanger, be automotive heat exchanger form one with vacuum box 22 independent closed environment, then rethread inlet port 23 to automotive heat exchanger inside let in leak hunting gas such as helium, whether have leak hunting gas in the vacuum box 22 through the inspection, can judge automotive heat exchanger's the sealed condition, the clamping is fixed convenient, the shutoff is tight, the inspection is swift efficient.

Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims

1. The utility model provides an automobile heat exchanger anchor clamps for leak hunting which characterized in that: comprises a bracket (1), a supporting guide plate (2) arranged in the bracket (1) and a workpiece tray (3) arranged on the supporting guide plate (2), a placing groove (4) and a connecting pipe hole (5) which are matched with the lower surface of the heat exchanger are arranged on the workpiece tray (3), the supporting guide plate (2) is also provided with a connecting pipe hole (5) matched with the lower surface of the automobile heat exchanger, a plurality of upper sealing head groups (6) corresponding to the upper surface interfaces of the automobile heat exchanger are arranged at the upper part of the bracket (1), the upper sealing head groups (6) are arranged on a clamp top plate (7), the clamp top plate (7) is arranged at the upper part of the bracket (1) through an upper cylinder (8), the lower part of the bracket (1) is provided with a plurality of lower sealing head groups (9) corresponding to lower surface interfaces of the automobile heat exchanger, and the lower sealing head groups (9) are arranged on the lower part of the bracket (1) through lower cylinder groups (10).

2. The jig for leak detection of automotive heat exchangers as claimed in claim 1, wherein: the upper sealing head group (6) comprises a horizontal sealing head (6.1), a 45-degree sealing head (6.2) and a plurality of upper vertical sealing heads (6.3), wherein the horizontal sealing head (6.1) is used for sealing a horizontal hole of the heat exchanger to be tested; the 45-degree sealing head (6.2) is used for sealing a 45-degree hole of the heat exchanger to be tested; the upper vertical sealing head (6.3) is used for sealing an upper vertical hole of the heat exchanger to be tested.

3. The jig for leak detection of automotive heat exchangers as claimed in claim 1, wherein: the lower sealing head group (9) comprises a first lower vertical sealing head (9.1) and a second lower vertical sealing head (9.2); the first lower vertical sealing head (9.1) and the second lower vertical sealing head (9.2) are controlled by a lower cylinder group (10).

4. The jig for leak detection of automotive heat exchangers as claimed in claim 1, wherein: and a positioning rod (11) is arranged on the clamp top plate (7), and a positioning hole (12) matched with the positioning rod (11) is arranged on the workpiece tray (3).

5. The jig for leak detection of automotive heat exchangers as claimed in claim 1, wherein: the upper sealing head group (6) is connected with the clamp top plate (7) through a top piston (13), and a compression spring (14) is further arranged between the upper sealing head group (6) and the top piston (13).

6. The jig for leak detection of automotive heat exchangers as claimed in claim 1, wherein: the upper sealing head group (6) comprises a straight sealing head and an inclined sealing head, wherein the straight sealing head and the inclined sealing head are vertically downward.

7. The jig for leak detection of automotive heat exchangers as claimed in claim 1, wherein: and tray baffles (15) are arranged on two sides of the supporting guide plate (2), and side rollers (16) matched with the tray baffles (15) are arranged on two sides of the workpiece tray (3).

8. The jig for leak detection of automotive heat exchangers as claimed in claim 1, wherein: and a rolling guide rail (17) is further embedded on the supporting guide plate (2), and a return spring (18) is arranged between the rolling guide rail (17) and the supporting guide plate (2).

9. The jig for leak detection of automotive heat exchangers as claimed in claim 6, wherein: and one side of the workpiece tray (3) is also connected with a telescopic cylinder (19), and the telescopic cylinder (19) is arranged in parallel with the rolling guide rail (17).

10. The leak detection device for the automobile heat exchanger is characterized in that: comprises the fixture for leak detection of an automotive heat exchanger as recited in any one of claims 1 to 7; the support (1) is a vacuum box (22), and the support guide plate (2) is arranged in the support box.