CN207866431U - Quick air-tightness precise testing device - Google Patents

Abstract

The utility model discloses the quick air-tightness precise testing device for automobile gear shift power-assisted cylinder shell air-leakage test, including the first sealing mechanism, including seal receptacle and fixing device, the workpiece application pressure that fixing device can be on seal receptacle is secured on seal receptacle and seals its first direction opening；Second sealing mechanism is set to the side of the first sealing mechanism, the second direction opening of the workpiece on the salable seal receptacle；Air tightness testing machine structure can be inflated to the inner cavity of workpiece and carry out air tightness test.The utility model meets the fixed requirement of limit and the seal request of different openings of workpiece by two sealing mechanisms, the inner cavity of workpiece is set to form effective sealing space, so as to carry out air-leakage test by inflation and airtight detector, it is simple in structure, detection operation is easy, coordinate the static sealing being easily achieved, is effectively guaranteed the reliability and validity of sealing, can ensure the accuracy of test result.

Description

Quick air-tightness precise testing device

Technical field

The utility model is related to air-tightness precise testing devices, in particular for the quick of automobile gear shift power-assisted cylinder shell Air-tightness precise testing device.

Background technology

Air tightness test machine also known as air-leakage test experimental machine, be one kind be widely used in tap cavity, motor cylinder block, The equipment of the various sealing element air tightness tests such as piston cavity, bend pipe cavity, pressure gauge, air accumulator, can be as type of production batch It measures and tries out, can also be used as sampling observation or use for laboratory.The conventional method of air-leakage test has bubble method, direct pressure method, helium Part to be measured is usually detected by mass spectrography etc. into the water, manual operation inefficiency, and time cost is high.And remaining is airtight Property detection machine is there is also accuracy is inadequate, and detection speed is also unhappy, and the problem that detection process is cumbersome.

For this purpose, notification number is that CN205002915U utility model patents disclose a kind of air-leakage test in patent database Machine, it is characterised in that including rack, water tank, clamping part, support portion and test section, the water tank is added in frame bottom upper table Face, the clamping part are connected by support portion and frame upper end, and the detection position is in frame bottom.

The solution of above-mentioned patent needs to test the air-tightness of measured object using water tank, and long-time service is fragile, and There is a problem of complicated, inconvenient.And for the special workpiece of some shapes, automobile gear shift as shown in Fig. 1 Power-assisted cylinder shell, shape is special, and with different shape, the opening of different directions, therefore in addition to different openings to be met Sealing outside, it is also necessary to be designed according to the shape of workpiece limit structure make its position fix so as to be sealed test.

Utility model content

The purpose of this utility model is exactly to provide quick air-tightness essence to solve the above-mentioned problems in the prior art Density test device.

The purpose of this utility model is achieved through the following technical solutions：

Quick air-tightness precise testing device, including

First sealing mechanism, including seal receptacle and fixing device, the workpiece that the fixing device can be on seal receptacle apply Pressure is secured on seal receptacle and seals its first direction opening；

Second sealing mechanism is set to the side of first sealing mechanism, the workpiece on the salable seal receptacle Second direction is open；

Air tightness testing machine structure can be inflated to the inner cavity of the workpiece and carry out air tightness test.

Preferably, in the quick air-tightness precise testing device, the seal receptacle includes ontology, the ontology it is upper Surface is formed with and the matched profiling location structure of end surface shape where the first direction of workpiece opening and the sealing first party To the sealing structure of opening.

Preferably, in the quick air-tightness precise testing device, the profiling location structure includes profiling card slot, institute It states to be provided in profiling card slot and extends to the positioning convex platform outside it and the groove by the positioning convex platform, in the groove Be formed with positioning round table, the sealing structure include the bottom margin of the profiling card slot formed have mounting groove, the installation Sealing ring is provided in slot.

Preferably, in the quick air-tightness precise testing device, the fixing device includes being located at the seal receptacle The pressing plate of top, the pressing plate be slidably disposed in four be square distribution and along the guide rod that first axle extends, and It connects the power plant for driving it to be moved back and forth along the guide rod.

Preferably, in the quick air-tightness precise testing device, each guide rod is plugged in branch quick disassembledly In support member.

Preferably, in the quick air-tightness precise testing device, second sealing mechanism includes for blocking The seal head of second direction opening is stated, by strut connecting bracket, the holder is slidably disposed in along the seal head Guide rail and connection that two axis extend drive the driving device that it is slided along the guide rail.

Preferably, in the quick air-tightness precise testing device, the seal head include be integrally formed and it is coaxial Extending column and block, the periphery of the extending column are set with the bolster for the front end face for being fixed on the block, the bolster Front end face on be provided with sealing element for sealing second direction opening.

Preferably, in the quick air-tightness precise testing device, the air tightness testing machine structure includes air source and airtight Tester, the gas-tight tester connect tracheae, and the tracheae is tightly connected the air guide channel opened up on the seal head, works as institute When stating seal head by second direction opening sealing, the outlet side of the air guide channel is located in the inner cavity of workpiece.

Preferably, further include the feeding blanking that can carry out multiaxial motion in the quick air-tightness precise testing device Robot.

The advantages of technical solutions of the utility model, is mainly reflected in：

The utility model deft design had both met the limit to workpiece by two sealing mechanisms and has fixed requirement, simultaneously The seal request for meeting workpiece different openings again makes the inner cavity of workpiece form effective sealing space, so as to pass through Inflation and airtight detector carry out air-leakage test, simple in structure, and detection operation is easy, and coordinates the static sealing being easily achieved, It is effectively guaranteed the reliability and validity of sealing, can ensure the accuracy of test result.

The air guide channel of air tightness testing machine structure is formed on seal head, and makes the inlet end and branch of air guide channel by strut Frame keeps gap, consequently facilitating the connection of pipeline, while being conducive to improve the integrated level of equipment, ensure sealing effect.

The support element of fast disassembly type has greatly been convenient for the assembly and disassembly of equipment to repair, and is conducive to the maintenance for carrying out equipment, Reduce equipment cost.

In conjunction with the feeding feeding robot that can carry out multiaxis movement, entire test process automation can be made to carry out, automatically Change degree is high, and improved efficiency avoids the influence of artificial subjective factor.

Description of the drawings

Fig. 1 is the stereogram of the automobile gear shift power-assisted cylinder shell described in background technology；

Fig. 2 is the stereogram of the utility model（Workpiece is not shown）；

Fig. 3 is the stereogram of the utility model（Workpiece is not shown）

Fig. 4 is the partial structurtes stereogram of the utility model；

Fig. 5 is the enlarged drawing of a-quadrant in Fig. 4；

Fig. 6 is the stereogram of the support element of the utility model；

Fig. 7 is the stereogram of the seal head of the utility model.

Specific implementation mode

The purpose of this utility model, advantage and feature will carry out figure by the non-limitative illustration of preferred embodiment below Show and explains.These embodiments are only the prominent examples using technical solutions of the utility model, all to take equivalent replacement or wait Effect transformation and formed technical solution, all fall within the requires of the utility model protection within the scope of.

In the description of scheme, it should be noted that term "center", "upper", "lower", "left", "right", "front", "rear", The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, Signified device or element must have specific side when being merely for convenience of describing and simplifying description, rather than indicating or imply Position, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.

The quick air-tightness precise testing device of the utility model is illustrated below in conjunction with the accompanying drawings, as shown in Fig. 2, Including holder 20, the holder 20 is the frame structure being made of plank 201, crossbeam 202, longeron 203 etc., and bottom is provided with One group of universal wheel 204, each universal wheel 204 have locking structure, are known technology herein, details are not described herein.

As shown in attached drawing 1- attached drawings 3, part holder 30 to be measured, the first sealing mechanism 1, second are provided on the holder 20 Sealing mechanism 2, air tightness testing machine structure 3, test block holder 40.

As shown in Fig. 4, first sealing mechanism 1 includes seal receptacle 11 and fixing device 12, the fixing device 12 The application of workpiece 10 pressure that can be on seal receptacle 11 is secured on seal receptacle 11 and seals its first direction opening 101；

Second sealing mechanism 2 is located at the side of first sealing mechanism 1, the work on the salable seal receptacle 11 The second direction opening 102 of part；

The air tightness testing machine structure 3 to the inner cavity of the workpiece 10 for inflating and carrying out air tightness test.

When work, the opening of the both direction of workpiece is blocked by two sealing mechanisms, workpiece lumen is made to be formed Then closed cavity is inflated workpiece lumen, the airtight implementations of workpiece are judged by gas-tight tester.

In preferred embodiment, as shown in Fig. 5, the seal receptacle 11 includes ontology 111, and the ontology 111 passes through spiral shell Bolt is removable installed on a plank 201 of the holder 20, and the upper surface of the ontology 111 is formed with and workpiece 10 First direction be open 101 place end faces the matched profiling location structure of shape and sealing first direction opening 101 it is close Seal structure, concrete shape can be designed according to different workpiece.

For example, when for attached automobile gear shift power-assisted cylinder shell shown in FIG. 1, the profiling location structure includes at least Profiling card slot 112 is provided with the positioning convex platform 113 extended to outside it in the profiling card slot 112 and is located at the convex The groove 114 on the side of platform 113 is formed with positioning round table 115 in the groove 114；When workpiece 10 is positioned over the profiling positioning knot When structure, the first protruding portion 103 of workpiece is embedded in the profiling card slot 112, and the second lug boss 104 is embedded into the groove In 114, the positioning convex platform 113, positioning round table 115 are plugged into respectively in two openings of first direction opening, to realize The positioning of the workpiece 10,

Further, as shown in Fig. 5, the profiling location structure further includes that one end is connected to the profiling card slot 112 Elongated slot 117, the depth of the elongated slot 117 are less than the depth of the profiling card slot 112, the other end connection of the elongated slot 117 One square breach 118, the depth of the direction notch are more than the depth of the elongated slot 117, when workpiece is located at profiling positioning When in structure, the third convex ribs 105 of the workpiece 10 are embedded into the elongated slot 117, and the 4th boss 106 of the workpiece 10 is embedding Enter into the direction notch 118 and is support with its bottom.

When workpiece is located in the profiling location structure, it is only capable of limiting the degree of freedom of its horizontal direction, in axial direction（The One axis Z）Still there is freedom of movement, it is therefore desirable to there is fixing device 12 to carry out limiter axial direction freedom of movement.

Specifically, as shown in Fig. 4, the fixing device 12 includes being located at the pressing plate 121 of 11 top of the seal receptacle, The pressing plate 121 is slidably disposed in four guide rods for being distributed and extending along first axle Z that are square by axle sleeve 125 On 122, and connect the power plant 123 for driving it to be moved back and forth along the guide rod 122；Therefore pass through the power plant 123 driving pressing plates 121 apply pressure to the workpiece 10 on seal receptacle 11, so as to realize its axial freedom of movement It limits.

Furthermore, it is understood that each guide rod 122 is plugged on support element 124 quick disassembledly, the support element 124 is logical It crosses bolt to be detachably secured on plank, as shown in Fig. 6 comprising pedestal 1241 and sleeve 1242, the pedestal 1241 Be formed with a notch 1243 for extending from top to bottom on sleeve 1242, described lack is located on the side wall of the sleeve 1242 The both sides of mouth 1243 are respectively arranged with spiro union portion 1244, and one in two spiro union portions 1244 is located at a deformations On 1245, the deformations 1245 are the areas that the notch 1243 and the notch 1246 positioned at 1242 surface of the sleeve are formed Domain connects two spiro union portions 1244 to make the gap between two spiro union portions 1244 reduce, with realization pair by bolt 1247 The locking for the guide rod 122 being plugged in the sleeve 1242 is fixed, since using having structure jaggy, both having facilitated will lead It is plugged into sleeve 1242 to bar 122, while also allowing for being locked by bolt etc., the structure of Quick Release is convenient for equipment Assembling, repair, advantageously reduce equipment cost.

The power plant 123 can be the known power plant that the pressing plate can be driven to move linearly or knot Structure, such as it can be the equipment such as individual cylinder, oil cylinder, straight line module, can also be electric cylinders, the structure etc. of motor+leading screw, As shown in Fig. 4, preferably the power plant 123 includes being located at the support plate 1231 at four 122 tops of guide rods, the support The cylinder 1232 that piston rod stretches towards first axle Z is provided on plate 1231, the piston rod of the cylinder 1232 passes through adapter The upper surface of the 1233 connection pressing plates.

When the fixed mechanism 12 makes its fixation to workpiece application pressure, the opening profiling fixed structure of the workpiece 10 Contact area can more or less have certain leak case, it is as shown in Fig. 5, preferably described in order to avoid such situation Sealing structure include the profiling card slot 112 bottom margin formed have mounting groove 116, be provided in the mounting groove 116 Sealing ring（It is not shown in figure）, make to be disposed around first direction opening periphery by sealing ring, in the pressure of fixed mechanism 12 Under effect, make the region that sealing ring encloses that the first direction of workpiece to be open and seal, by the way of static sealing, sealing is steady Fixed, sealing effect is good.

Furthermore, it is understood that as shown in attached drawing 4, attached drawing 7, second sealing mechanism 2 includes for blocking the second party To the seal head 21 of opening 102, the seal head 21 includes integrated molding and coaxial extending column 211 and block 212, described to prolong The periphery for stretching column 211 is set with the bolster 213 for the front end face for being fixed on the block 212, the front end face of the bolster 213 On be provided with sealing element for sealing second direction opening 102（It is not shown in figure）, the seal head 21 passes through strut 22 connecting brackets 23, the holder 23 is slidably disposed in the guide rail 24 extended along second axis Y and connection drives it along institute State the driving device 25 of the sliding of guide rail 24.

The driving device 25 be equally the equipment that the seal head 21 can be driven to move linearly towards the seal receptacle 1 or Structure, such as cylinder, oil cylinder, electric cylinders equipment or structure, as shown in Fig. 4, preferably it includes mounting bracket 251, the installation Holder 251 is installed on again by above-mentioned support element 124 on plank, and piston rod is provided on mounting plate towards second axis Y Flexible cylinder 252, the piston rod of the cylinder 252 are connected by connector（It is not shown in figure）The holder 23.

After the opening of workpiece 10 is sealed, you can it is tested, specifically, as shown in attached drawing 2, attached drawing 3, attached drawing 7, institute It includes air source 33 and gas-tight tester 31 to state air tightness testing machine structure 3, and the air source is also first sealing mechanism by pipeline With the cylinder gas supply in the second sealing mechanism, the gas-tight tester 31 connects tracheae, and the tracheae is tightly connected the sealing The air guide channel 32 opened up on first 21, when the seal head 21 is by second direction 102 sealing of opening, the air guide channel 32 Outlet side is located in the inner cavity of workpiece 10.

Preferably, as shown in Fig. 7, the setting coaxial with the seal head 21 of the air guide channel 32, from the sealing One end face of head extends to another endface, and it is divided into the elongated passageway of different tube diameters and short and thick channel, and described The one end open of elongated passageway is the gas outlet of the air guide channel 32, and the other end and the join domain in the short and thick channel are The other end of frustum shape, the short and thick channel is the air inlet of the air guide channel.

Further, the quick air-tightness precise testing device further includes the feeding blanking machine that can carry out multiaxial motion People（It is not shown in figure）, the feeding feeding robot can be the robot of known various feasible configurations, be known herein Technology, details are not described herein.

Above-mentioned quick air-tightness precision measurement method, includes the following steps：

S1, a workpiece 10 is simultaneously from being taken in part holder 30 to be measured for the artificial or feeding feeding robot that is moved by multiaxis It is positioned on seal receptacle 11, the seal receptacle 11 is accepted workpiece and limited, and is pressed and is fixed with device 12 to be fixed.

S2, the power plant 123 in the fixing device 12, which starts, drives the pressing plate 121 to be moved downward to and workpiece 10 Top surface contact, so that it is fixed on the seal receptacle 11 to apply pressure to workpiece, due to workpiece be only pressed together on it is described On sealing ring, to make 101 sealing of first direction opening of workpiece by sealing ring.

S3, then, the driving device 25 in second sealing mechanism 2 drive the seal head 21 to the workpiece 10 The 102 directions movement of second direction opening, and its extending column 211 is plugged into the second direction opening 102, until the block Sealing ring and the open end of second direction opening 102 on 212 realize the close of the second direction opening 102 when contacting Envelope.

S4, then, the air tightness testing machine structure 3 are inflated to the inner cavity of workpiece, by the gas-tight tester 31 into promoting the circulation of qi Close property tests and outputs test result.

S5, after the completion of test, the air tightness testing machine structure 3 stops inflation, meanwhile, first sealing mechanism and second close The power-equipment reaction work of sealing mechanism makes pressing plate 121 and seal head 21 move backward, to make workpiece restore axial（First axle Line Z-direction）Mobile degree of freedom；Then the workpiece that will be tested by feeding feeding robot that is artificial or being moved by multiaxis It is removed from the seal receptacle 11 and pieces O.K. and unqualified part subregion is positioned over by test block holder 40 according to test result In.

When the feeding feeding robot moved with multiaxis carries out loading and unloading, robot motion is carried out by sensor Control；When by manual operation, staff can trigger equipment work by start-stop button or stop, and can also pass through sensing Device and PLC programmings etc. realize automatically beginning to and stopping for test phase, are known technology, repeat no more herein.

Still there are many embodiment, all technologies formed using equivalents or equivalent transformation for the utility model Scheme is all fallen within the scope of protection of the utility model.

Claims (9)

1. quick air-tightness precise testing device, it is characterised in that：Including

First sealing mechanism（1）, including seal receptacle（11）And fixing device（12）, the fixing device（12）It can be to seal receptacle （11）On workpiece（10）Apply pressure and is secured to seal receptacle（11）Above and seal its first direction opening（101）；

Second sealing mechanism（2）, it is set to first sealing mechanism（1）Side, the salable seal receptacle（11）On The second direction of workpiece is open（102）；

Air tightness testing machine structure（3）, can be to the workpiece（10）Inner cavity inflate and carry out air tightness test.

2. quick air-tightness precise testing device according to claim 1, it is characterised in that：The seal receptacle（11）Including Ontology（111）, the ontology（111）Upper surface be formed with and workpiece（10）First direction opening where end surface shape matching Profiling location structure and sealing first direction opening（101）Sealing structure.

3. quick air-tightness precise testing device according to claim 2, it is characterised in that：The profiling location structure packet Include profiling card slot（112）, the profiling card slot（112）Inside it is provided with the positioning convex platform extended to outside it（113）And positioned at institute State positioning convex platform（113）Other groove（114）, the groove（114）Inside it is formed with positioning round table（115）, the sealing structure Including the profiling card slot（112）Bottom margin formed mounting groove（116）, the mounting groove（116）Inside it is provided with sealing Circle.

4. quick air-tightness precise testing device according to claim 1, it is characterised in that：The fixing device（12）Packet It includes and is located at the seal receptacle（11）The pressing plate of top（121）, the pressing plate（121）It is slidably disposed in four distributions that are square And along first axle（Z）The guide rod of extension（122）On, and its connection drives it along the guide rod（122）It moves back and forth Power plant（123）.

5. quick air-tightness precise testing device according to claim 4, it is characterised in that：Each guide rod （122）It is plugged in support element quick disassembledly（124）On.

6. quick air-tightness precise testing device according to claim 1, it is characterised in that：Second sealing mechanism （2）Including being used to block the second direction opening（102）Seal head（21）, the seal head（21）Pass through strut（22）Even Connect holder（23）, the holder（23）It is slidably disposed in along second axis（Y）The guide rail of extension（24）And connection drives it Along the guide rail（24）The driving device of sliding（25）.

7. quick air-tightness precise testing device according to claim 6, it is characterised in that：The seal head（21）Including Integrated molding and coaxial extending column（211）And block（212）, the extending column（211）Periphery be set be fixed on it is described Block（212）Front end face（2121）Bolster（213）, the bolster（213）Front end face on be provided with for sealing The second direction opening（102）Sealing element.

8. quick air-tightness precise testing device according to claim 6, it is characterised in that：The air tightness testing machine structure （3）Including air source and gas-tight tester（31）, the gas-tight tester（31）Tracheae is connected, the tracheae is tightly connected described close End socket（21）On the air guide channel that opens up（32）, when the seal head（21）Second direction is open（102）It is described to lead when sealing Gas channel（32）Outlet side be located at workpiece（10）Inner cavity in.

9. according to any quick air-tightness precise testing devices of claim 1-8, it is characterised in that：Further include that can carry out The feeding feeding robot of multiaxial motion.