CN208704974U - Watertight test device - Google Patents

Abstract

The utility model provides a kind of watertight test device, belongs to watertightness test apparatus field, which includes fixing tool, press device and airtight pressure head；Fixing tool is to clamping workpiece for measurement and accommodates liquid；Airtight pressure head has the venting cavity being connected to by admission line with air feed equipment；Seal groove is set around the accent of venting cavity, is provided with sealing ring in seal groove, for airtight pressure head in contact measured workpiece, the sealing ring being arranged in seal groove is to venthole peripheral seal；Airtight pressure head is connect with press device, press device can drive airtight pressure head to move towards the venthole direction close to or far from workpiece for measurement, to make airtight pressure head be connected to the venthole of workpiece for measurement, gas is passed through into workpiece for measurement, workpiece for measurement air pressure inside is set to be greater than outside liquid pressure, to judge workpiece for measurement air leak position.

Description

Watertight test device

Technical field

The utility model relates to watertightness test apparatus fields, and in particular to a kind of watertight test device.

Background technique

Such as there is radar the industrial part of cavity usually to carry out to it after processing is completed to guarantee its quality at present Watertightness detection, the problem of to prevent part from intaking in use.Detection mode is generally and puts the workpiece at present In the liquid of certain depth, after a certain period of time, workpiece is taken out, whether observation inside workpiece enters liquid, to judge that workpiece is It is no that there is leak hole.Once workpiece has leak hole, liquid will go into the electronic device inside inside workpiece and then defective work piece, because This, current watertightness test mode is simultaneously impracticable.

Utility model content

The purpose of this utility model is to provide a kind of watertight test device, which can solve existing skill The above-mentioned deficiency of art, can ensure while detecting the air-tightness of workpiece for measurement will not enter liquid inside workpiece for measurement, protect Hinder the safety of the electronic device inside workpiece for measurement.

Based on above-mentioned purpose, watertight test device provided by the utility model, comprising: fixing tool, press device are gentle Close pressure head；

The fixing tool is to clamping workpiece for measurement and can accommodate liquid；

The airtight pressure head has venting cavity, and the cavity wall of the venting cavity is connected to by admission line with air feed equipment；It encloses Seal groove is set around the accent of the venting cavity, is provided with sealing ring in the seal groove；The airtight pressure head is in contact measured When workpiece, the sealing ring of setting is to the peripheral seal of the venthole of workpiece for measurement so that the venting cavity passes through in the seal groove The venthole of workpiece for measurement is passed through gas into workpiece for measurement；

The airtight pressure head is connect with the press device, so that the press device can drive the airtight pressure head court It is moved to the venthole direction close to or far from workpiece for measurement.

In above-mentioned technical proposal, fixing tool plays clamping workpiece for measurement, and can accommodate liquid to submerge workpiece for measurement Effect, be in workpiece for measurement in liquid；Press device drives airtight pressure head to be connected to the venthole of workpiece for measurement, to be measured Gas is passed through in workpiece, so that workpiece for measurement internal gas pressure is greater than fluid pressure, to judge workpiece for measurement gas leakage portion Position；Meanwhile making to be sealed between airtight pressure head and workpiece for measurement using sealing ring, ensureing may not flow into liquid inside workpiece for measurement Body damages workpiece for measurement.

Further, direction groove width of the seal groove from slot bottom to notch successively decreases.Above-mentioned structure designs so that close Seal is compressed in seal groove always, and is not easy to fall, to ensure the leakproofness between airtight pressure head and workpiece for measurement.

Further, one end of the accent of the airtight pressure head far from venting cavity be provided with to connect press device One connector.

Further, the press device includes mechanical pressure head and driving device, and the driving device has telescopic rod, institute Stating has the first accommodating chamber in telescopic rod；

The machinery pressure head has the second accommodating chamber to accommodate the first connector, and the machinery pressure head holds far from second Receiving one end of chamber is provided with the second connector, and second connector is fixed in the first accommodating chamber, in second connector It is provided with the mounting hole to be connected to the second accommodating chamber and the first accommodating chamber, connector, the company are coated in the mounting hole Fitting one end is connect with first connector, and the other end is inserted into first accommodating chamber and can accommodate described first Intracavitary movement is to drive first connector to move in second accommodating chamber.

In above-mentioned technical proposal, since connector one end is connect with the first connector, the other end is inserted into the first accommodating chamber Interior and can move in the first accommodating chamber, therefore, the first connector airtight pressure head that links relative to mechanical pressure head and can be stretched Contracting bar is mobile, and airtight pressure head is avoided directly to cause to impact firmly to workpiece for measurement.

Further, there is position-limit mechanism between second accommodating chamber and first connector so that described first connects Junctor will not be relatively rotated with second accommodating chamber.Convenient for assembly, cylindrical the first connector and the second accommodating chamber are prevented During mutual fastening, skids, fasten situation loosely.

Further, first connector is inserted into the end face of the end of second accommodating chamber and described second and accommodates Setting has elastic component between the bottom of chamber of chamber.

When being pressed on product under the airtight pressure head of driving device driving, elasticity can be passed through between airtight pressure head and mechanical pressure head Element plays buffer function, avoids airtight pressure head from impacting firmly and damages to workpiece for measurement.

Further, the elastic element uses spring, rubber bodies or cavernous body.

Further, the connector uses screw, has the characteristics that easy for assemble or unload.

Further, the fixing tool includes bottom plate and is disposed around the coaming plate of bottom plate side to form open box Shape.

One side bottom plate plays the role of to accommodate and fix workpiece for measurement, the box that another aspect coaming plate and bottom plate are formed Effect of the shape space also to store liquid.

It further, further include pedestal, the pedestal is to carry the fixing tool.

By adopting the above technical scheme, the technical effect of watertight test device provided by the utility model has:

The utility model is provided in watertight test device, comprising: fixing tool, press device and airtight pressure head；Regular worker Dress is to clamping workpiece for measurement and can accommodate liquid；Airtight pressure head has venting cavity, and the cavity wall of venting cavity passes through admission line It is connected to air feed equipment；Seal groove is set around the accent of venting cavity, is provided with sealing ring in seal groove；Airtight pressure head is contacting When workpiece for measurement, the sealing ring being arranged in seal groove is to the venthole peripheral seal of workpiece for measurement so that venting cavity passes through work to be measured The venthole of part is passed through gas into workpiece for measurement；Airtight pressure head is connect with press device, so that press device can drive gas Close pressure head is moved towards the venthole direction close to or far from workpiece for measurement.

Fixing tool plays the role of clamping workpiece for measurement, and can accommodate liquid to submerge workpiece for measurement, makes work to be measured Part is in liquid；Press device drives airtight pressure head to be connected to the venthole of workpiece for measurement, and gas is passed through into workpiece for measurement, So that workpiece for measurement internal gas pressure is greater than fluid pressure, to judge workpiece for measurement air leak position or airtight weak point Position；Meanwhile making to be sealed between airtight pressure head and workpiece for measurement using sealing ring, ensureing may not flow into liquid inside workpiece for measurement Body damages workpiece for measurement.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of watertight test device provided by the embodiment of the utility model；

Fig. 2 is that the schematic perspective view of watertight test device provided by the embodiment of the utility model (omits air feed equipment And admission line)；

Fig. 3 be in Fig. 1 C-C to cross-sectional view；

Fig. 4 is the partial enlarged view in Fig. 2 at B.

Appended drawing reference: 100- fixing tool；110- bottom plate；120- coaming plate；200- press device；210- machinery pressure head； The second accommodating chamber of 211-；212- mounting hole；The second connector of 213-；220- driving device；The first accommodating chamber of 221-；300- is airtight Pressure head；310- venting cavity；320- seal groove；330- sealing ring；The first connector of 340-；400- air feed equipment；500- connector； 600- elastic element；700- pedestal；800- workpiece for measurement.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

Existing major part watertight test, is all made of for workpiece for measurement (product) to be put into and test in the water of certain depth Mode, once workpiece for measurement generates leak hole, liquid be will go into workpiece for measurement, can damage the electronics device inside workpiece for measurement Part, and the test mode of watertight test device provided by the embodiment of the utility model is by air-tightness principle, it can be seen that be measured The position whether workpiece leaks and specifically leak.After workpiece for measurement immerses liquid, gas, work to be measured are passed through into workpiece for measurement Higher gas pressure is formed inside part, if workpiece for measurement has the place of leak hole or airtight weakness, workpiece for measurement has leakage Hole or the place of airtight weakness will form bubble, consequently facilitating observing accurate Gas leak position；Simultaneously as in workpiece for measurement Gas pressure is constantly kept, workpiece for measurement will not will not also damage the electronics member device inside workpiece for measurement there is a situation where intaking Part.

It is specific:

As shown in Figures 1 to 4, watertight test device provided by the embodiment of the utility model, comprising: fixing tool 100, pressure Power equipment 200 and airtight pressure head 300.

Fixing tool 100 is to clamping workpiece for measurement 800 and can accommodate liquid；

Airtight pressure head 300 has venting cavity 310, it is preferable that the axis of the axis of venting cavity 310 and airtight pressure head 300 is total Line, airtight pressure head 300 can be moved along its axis direction；

The cavity wall of venting cavity 310 is connected to by admission line with air feed equipment 400, passes through air inlet using air feed equipment 400 Pipeline conveys gas into venting cavity 310, so that airtight pressure head 300 be enable to be passed through sky into the venthole of workpiece for measurement 800 Gas, to increase the air pressure inside workpiece for measurement 800；

End position of the airtight pressure head 300 to contact measured workpiece 800, the endface position of preferably airtight pressure head 300, Seal groove 320 is arranged in accent around venting cavity 310, referring to figure 4., it is preferable that seal groove 320 is set as O shape, seal groove Sealing ring 330 is provided in 320, airtight pressure head 300 is in contact measured workpiece 800, the sealing ring of setting in seal groove 320 The circumferential position of the venthole of 330 pairs of workpieces for measurement 800 is sealed, to ensure airtight pressure head 300 to workpiece for measurement 800 When middle injection gas, it is isolated from the outside, is avoided completely by sealing ring 330 with the circumferential position of the venthole of workpiece for measurement 800 Liquid is entered inside workpiece for measurement 800 by venthole；

Airtight pressure head 300 is connect with press device 200, press device 200 airtight pressure head 300 can be driven towards close or Venthole direction far from workpiece for measurement 800 moves.

When needing to detect the air-tightness of workpiece for measurement 800, press device 200 drives airtight pressure head 300 towards work to be measured Part 800 is mobile, until the sealing ring 330 on airtight pressure head 300 is connected to the circumferential position of the venthole of workpiece for measurement 800, supplies Gas equipment 400 injects gas to the venthole of workpiece for measurement 800 by the venting cavity 310 of airtight pressure head 300；When detection finishes Afterwards, the direction that press device 200 drives airtight pressure head 300 to be directed away from workpiece for measurement 800 is mobile.

Fig. 1-Fig. 3 is please referred to, when it is implemented, fixing tool 100 is including bottom plate 110 and is disposed around 110 side of bottom plate Coaming plate 120, the coaming plate 120 of bottom plate 110 and its surrounding forms open box-like.

Preferably, the groove to accommodate workpiece for measurement 800 is set on bottom plate 110, the true form of groove with it is to be measured The shape of workpiece 800 is adapted, and in order to which workpiece for measurement 800 is fixed, prevents from carrying out the air-tightness of workpiece for measurement 800 Workpiece for measurement 800 is mobile when detection, also sets up corresponding groove-like structure on the two sides of bottom plate 110 or coaming plate 120, thus side Just it carries.

110 one side of bottom plate plays the role of to accommodate and fix workpiece for measurement 800, another aspect coaming plate 120 and bottom The box-like space that plate 110 is formed is also to store liquid.

In above-mentioned technical proposal, fixing tool 100 plays clamping workpiece for measurement 800, and can accommodate liquid with submerge to Survey the effect of workpiece 800；Press device 200 drives airtight pressure head 300 mobile towards workpiece for measurement 800, abuts sealing ring 330 In the circumferential position of the venthole of workpiece for measurement 800, the venting cavity 310 of airtight pressure head 300 and the venthole of workpiece for measurement 800 connect It is logical, gas is passed through into workpiece for measurement 800 by venting cavity 310, so that 800 air pressure inside of workpiece for measurement is greater than outside Fluid pressure, to judge the leak hole of workpiece for measurement 800 or the position of airtight weakness；Meanwhile making airtight pressure head using sealing ring 330 It is sealed between 300 and workpiece for measurement 800, ensures that may not flow into liquid inside workpiece for measurement 800 causes workpiece for measurement 800 Damage.

Referring to figure 4., in a preferred embodiment of the utility model, the groove width of seal groove 320, from slot bottom to slot Successively decrease in the direction of mouth；Seal groove 320 designs using the above structure, so that sealing ring 330 is not easy to fall from seal groove 320, from And ensure the leakproofness between airtight pressure head 300 and workpiece for measurement 800.

Referring to figure 3. and Fig. 4, in a preferred embodiment of the utility model, airtight pressure head 300 is far from venting cavity One end of 310 accent is provided with the first connector 340 to connect press device 200.Preferably, the first connector 340 It is set as column, the axle center of the first connector 340 is conllinear with the axle center of venting cavity 310.

In one preferred embodiment of the utility model, press device 200 includes mechanical pressure head 210 and driving device 220；

Driving device 220 has telescopic rod, and telescopic rod is able to drive the mechanical movement of pressure head 210, is provided in telescopic rod First accommodating chamber 221；

There is the second accommodating chamber 211 to accommodate the first connector 340, the first connector 340 inside mechanical pressure head 210 It can be moved in the second accommodating chamber 211；

The one end (i.e. one end of face telescopic rod) of mechanical pressure head 210 far from the second accommodating chamber 211 is provided with the second connection Body 213, the second connector 213 are fixed in the first accommodating chamber 221 of telescopic rod；Also, setting is useful in the second connector 213 To be connected to the mounting hole 212 of the second accommodating chamber 211 and the first accommodating chamber 221, it is preferable that the second accommodating chamber 211, mounting hole 212 It is coaxially arranged with mechanical pressure head 210；

Connector 500 is coated in mounting hole 212,500 one end of connector is connect with the first connector 340, the other end It is inserted into the first accommodating chamber 221 and can be moved in the first accommodating chamber 221.

It is arranged by above structure, under the driving of the telescopic rod of driving device 220, mechanical pressure head 210 and airtight pressure head 300 can synchronize towards the movement of workpiece for measurement 800, when the sealing ring 330 on airtight pressure head 300 touches workpiece for measurement 800, Since driving device 220 continues to the effect of pressure, the first connector 340 links airtight pressure head 300 can be relative to machinery Pressure head 210 and telescopic rod reverse movement, so that airtight pressure head 300 be avoided directly to cause to impact firmly to workpiece for measurement 800.

In one preferred embodiment of the utility model, above-mentioned driving device 220 preferably uses cylinder, and cylinder has Telescopic rod, have the characteristics that it is easy to use, be easily manipulated.Above-mentioned connector 500 preferably uses screw, and the screw cap end of screw is stretched Enter to the first accommodating chamber 221, the screw rod end of screw passes through mounting hole 212 and is threadedly coupled with the first connector 340, has installation The characteristics of convenient disassembly.Certainly, above-mentioned connector 500 can also be substituted using pin rod etc..

In one preferred embodiment of the utility model, there is limit between the second accommodating chamber 211 and the first connector 340 Position mechanism is so that the first connector 340 will not be relatively rotated with the second accommodating chamber 211.

Preferably, at least one plane on side of the position-limit mechanism by columnar first connector 340 is arranged in, with And at least one corresponding plane composition of the internal chamber wall of the second accommodating chamber 211, the limit of above-mentioned two plane composition are set Position mechanism, not only acts as the effect convenient for assembly, also acting as prevents cylindrical first connector 340 and the second accommodating chamber 211 from existing Mutually during fastening, skids, fasten situation loosely.

In one preferred embodiment of the utility model, the first connector 340 is inserted into the end of the second accommodating chamber 211 End face and the second accommodating chamber 211 bottom of chamber between setting have elastic component 600.Driving device 220 drives under airtight pressure head 300 When being pressed on workpiece for measurement 800, buffering can be played by elastic element 600 between airtight pressure head 300 and mechanical pressure head 210 and is made With, avoid airtight pressure head 300 it is hard impact workpiece for measurement 800 is damaged.

Preferably, above-mentioned elastic element 600 has multiple choices mode, for example, damping spring, damping bullet can be used Spring covers on connector 500, also, the first end of damping spring is contacted with the bottom of chamber of the second accommodating chamber 211, and the of damping spring Two ends are contacted with the one end that the first connector 340 is inserted into the second accommodating chamber 211.

Above-mentioned elastic element 600 can also be that rubber bodies or cavernous body etc. have the element of certain elastic buffer effect, In application, can by rubber bodies perhaps cavernous body be arranged to the inside of the second accommodating chamber 211 compatible shape rubber bodies or The both ends of cavernous body contact the bottom of chamber portion of the second accommodating chamber 211 respectively and the first connector 340 is inserted into the second accommodating chamber 211 One end；Further, it is also possible to be arranged in rubber bodies or cavernous body accordingly to the through-hole for accommodating connector 500, ensure It will not interfere with the movement of connector 500.

Watertight test device provided by the embodiment of the utility model, specific implementation process are as follows:

When carrying out air tightness test, the telescopic rod of cylinder stretches out, and drives mechanical pressure head 210 and 300 direction of airtight pressure head Workpiece for measurement 800 is mobile, and when airtight pressure head 300 is contacted by sealing ring 330 and workpiece for measurement 800, cylinder continues to press Power makes telescopic rod continue to stretch out, and the opposite direction that airtight pressure head 300 can be moved by connector 500 relative to telescopic rod is mobile, Until telescopic rod stretches out in place, sealing ring 330 is connected to the circumferential position of the venthole of workpiece for measurement 800 at this time, in this process In, elastic element 600 is gradually in compressive state；To generate the effect of buffering to airtight pressure head 300, reduce to workpiece for measurement 800 hard impact；

At the end of air tightness test, the telescopic rod of cylinder bounces back, and drives mechanical pressure head 210 and airtight pressure head 300 mobile With far from workpiece for measurement 800, elastic element 600 can be such that airtight pressure head 300 generates far from telescopic rod under own resilient effect The mobile trend in direction, while the telescopic rod of cylinder drives airtight pressure head 300 far from workpiece for measurement 800, elastic element 600 It is gradually resetted by compressive state, after elastic element 600 is in reset state, the airtight beginning of pressure head 300 divides with workpiece for measurement 800 From in order to carry out air tightness test again.

In above-mentioned technical proposal, connector 500 combines the first accommodating chamber 221 and elastic element 600 to use, and can make to drive Device 220 drives when being pressed on product under airtight pressure head 300, can pass through elasticity between airtight pressure head 300 and mechanical pressure head 210 Element 600 plays buffer function, avoids impacting damaging firmly to workpiece for measurement 800.

In one preferred embodiment of the utility model, which further includes pedestal 700, and pedestal 700 is logical It crosses fixing piece to be fixed on work top, fixing piece can use screw, have the characteristics that convenient disassembly, fixing tool 100 are logical Pin is crossed to be mounted on pedestal 700.

Watertight test device provided by the embodiment of the utility model at least has following technology effect compared with the prior art Fruit:

1, the test mode of the watertight test device is to be made to be measured by airtight pressure head to gas is passed through inside workpiece for measurement Inside workpiece air pressure and external liquid form pressure difference, and workpiece for measurement is made to have leak hole or airtight weak place to form gas Bubble, convenient for observation Gas leak position, also, due to having the gas pressure constantly kept, workpiece for measurement will not occur into such as liquid The case where, part internal electronic component to be measured will not be damaged.

2, it by the seal groove (successively decreasing in direction of the groove width from slot bottom to notch) being arranged in airtight pressure head end face, can assemble Stock size O-ring seal is not required to customize, simple and practical, meanwhile, sealing ring is not easily to fall off.

3, the setting of elastic element, plays buffer function, avoids the hard contact measured workpiece of airtight pressure head, avoids to work to be measured Part damages.

4, fixing tool can be changed quickly fixing tool, reach Quick Changeover in such a way that pin is connect with pedestal Demand.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of watertight test device, which is characterized in that including fixing tool, press device and airtight pressure head；

The fixing tool is to clamping workpiece for measurement and can accommodate liquid；

The airtight pressure head has venting cavity, and the cavity wall of the venting cavity is connected to by admission line with air feed equipment, surrounds institute The accent setting seal groove of venting cavity is stated, is provided with sealing ring in the seal groove；The airtight pressure head is in contact measured workpiece When, the interior sealing ring being arranged of the seal groove is to the venthole peripheral seal of workpiece for measurement so that the venting cavity passes through work to be measured The venthole of part is passed through gas into workpiece for measurement；

The airtight pressure head is connect with the press device, so that the press device can drive the airtight pressure head direction to lean on Close or remote from the venthole direction movement of workpiece for measurement.

2. watertight test device according to claim 1, which is characterized in that direction of the seal groove from slot bottom to notch Groove width successively decreases.

3. watertight test device according to claim 1, which is characterized in that the accent of the airtight pressure head far from venting cavity One end be provided with the first connector to connect press device.

4. watertight test device according to claim 3, which is characterized in that the press device includes mechanical pressure head and drive Dynamic device；

The driving device has telescopic rod, has the first accommodating chamber in the telescopic rod；

The machinery pressure head has the second accommodating chamber to accommodate the first connector, and the machinery pressure head is far from the second accommodating chamber One end be provided with the second connector, second connector is fixed in the first accommodating chamber, setting in second connector There is the mounting hole to be connected to the second accommodating chamber and the first accommodating chamber, connector, the connector are coated in the mounting hole One end is connect with first connector, and the other end is inserted into first accommodating chamber and can be in the first receiving cavity Movement is to drive first connector to move in second accommodating chamber.

5. watertight test device according to claim 4, which is characterized in that second accommodating chamber and first connection Have position-limit mechanism so that first connector will not be relatively rotated with second accommodating chamber between body.

6. watertight test device according to claim 4, which is characterized in that first connector is inserted into described second It is arranged between the end face of the end of accommodating chamber and the bottom of chamber of second accommodating chamber and has elastic component.

7. watertight test device according to claim 6, which is characterized in that the elastic element uses spring, rubber bodies Or cavernous body.

8. watertight test device according to claim 4, which is characterized in that the connector uses screw.

9. watertight test device according to claim 1, which is characterized in that the fixing tool includes that bottom plate and enclosing is set In the coaming plate of bottom plate side to form the box-like of opening.

10. watertight test device according to claim 1, which is characterized in that further include pedestal, the pedestal is to carry The fixing tool.