CN203551218U - Leak hunting clamp with multilayer plugging surface in one direction - Google Patents
Leak hunting clamp with multilayer plugging surface in one direction Download PDFInfo
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- CN203551218U CN203551218U CN201320632351.5U CN201320632351U CN203551218U CN 203551218 U CN203551218 U CN 203551218U CN 201320632351 U CN201320632351 U CN 201320632351U CN 203551218 U CN203551218 U CN 203551218U
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Abstract
The utility model relates to an anchor clamps that leak hunting that have multilayer shutoff face in an orientation, this anchor clamps specially adapted that leak hunting have the appearance profile of multilayer shutoff face to plug up the condition that just can leak hunting in the hole that has multilayer shutoff face in an orientation. The leak detection clamp comprises an upper clamp component, a plugging force balancing component, a lower clamp component, a middle layer plugging assembly, an upper and lower guiding and positioning component, an upper and lower total height limiting component and an anti-rotation positioning component; the workpiece to be measured is arranged between the upper clamp assembly and the lower clamp assembly, at least three layers of holes needing to be plugged are formed in the workpiece to be measured in one direction, and the workpiece to be measured is provided with at least plugging holes of three layers of an upper top layer, a lower bottom layer and a middle layer. The utility model provides an adaptable multiple form's of anchor clamps that leak hunting the work piece by the survey, this anchor clamps that leak hunting can install on various leak hunting host computers, and this anchor clamps make the shutoff sealing member of each shutoff aspect can both work under suitable shutoff pressure, and the life-span of shutoff sealing member improves greatly, has improved production efficiency.
Description
Technical field
The present invention relates to a kind ofly measured workpiece be utilized to differential pressure method dry-type leak hunting or utilize the immersion bubble wet fixture that leaks hunting checking that leaks hunting, this fixture that leaks hunting is arranged on the platform of the main frame that leaks hunting and forms the automatic or automanual machinery that leaks hunting.The actuator that the fixture utilization of leaking hunting is leaked hunting on main frame has moved the task of leaking hunting.Originally the appearance profile that the fixture that leaks hunting is specially adapted to measured workpiece has the hole of multilayer shutoff face need to block situation about just can leak hunting in a direction.
Background technology
In the processing of the engine of the transportation equipments such as automobile and the metal shell of compressor of air conditioner, need to leak hunting to housing, if housing has the defects such as sand holes, occurring that leakage phenomenon just need to follow up processes, the need of work that leaks hunting carries out in automatic production line or semi-automatic air leak tester, it need to utilize, the closure of lower clamp comprises measured workpiece wherein, can meet herein the requirement that needed independent cavity or a series of cavity of ganging up carry out comprehensive sealing, again to injecting gases at high pressure in this leak free closed cavity, then utilize differential pressure leak detector to detect or utilize the inspection of leaking hunting of immersion bubble wet, just completed the judgement of whether revealing.
If the housing appearance profile as measured workpiece has the hole of two-layer shutoff face need to block situation about just can leak hunting in a direction, for example measured workpiece only just need to be blocked and can leak hunting the hole of upper top layer face, lower round floor; As long as this be respectively equipped with shutoff assembly at upper jig plate and lower press plate, respectively the hole sealing of the seal on shutoff assembly and measured workpiece just can have been leaked hunting, and these are known technologies.But some measured workpiece, the housing of for example automobile air conditioner compressor, has three aspects to need the hole of shutoff in a direction, wherein has the plugging hole of upper top layer face, lower round floor and a middle aspect; If we also adopt above-mentioned known technology, admittedly a set of shutoff assembly is established in utilization on upper jig plate again, utilize the shutoff assembly of upper jig plate installation for the hole of the shutoff face of upper top layer face and middle this two-layer differing heights of aspect simultaneously, particularly when the area difference of these three required plugging holes of aspect is apart from larger time, for example, the plugging hole minimum of upper top layer face, the plugging hole maximum of lower round floor.When upper and lower clamp assembly closure, from the power system in space, analyze, the same direction of shutoff power that upper clamp assembly and lower clamp assembly apply, and equal and opposite in direction, opposite direction, in order to meet the needs in the hole of round floor under shutoff, upper top layer face adds the par that also needs to be increased to joint efforts lower round floor plugging hole sealing force of the plugging hole sealing of middle aspect, due to wherein compared with the hole of small size because born shutoff power also needs onesizely, be used in and just will greatly reduce compared with the life-span of the shutoff seal in the hole of small size; If exceeded top layer face in shutoff and added the strength degree of the permissible stress of the seal of the plugging hole of middle aspect, in the shutoff seal of this two aspect one of certainly will damage, because this shutoff seal occurs often because shearing damages, production efficiency is significantly low and even can not use.
The suitable shutoff power of shutoff seal is just to determine when designing according to the theoretical permissible stress of encapsulant, if the plugging hole for these three aspects can be according to detected pressures and shutoff area, take the measure of shutoff dynamic balance, thereby apply suitable shutoff power, and can adjust at any time, thereby in the range of stress that shutoff seal is allowed in reality, complete shutoff work, this will be the object that people pursue.
In existing disclosed information, we also do not find that there is the message in a direction with the fixture that leaks hunting of multilayer shutoff face.
Summary of the invention
For above all difficulties, the present invention proposes and solve in-problem technical scheme.
In a direction, have the fixture that leaks hunting of multilayer shutoff face, this fixture that leaks hunting comprises clamp assembly, shutoff dynamic balance assembly, lower clamp assembly, middle level shutoff assembly, upper and lower guide-localization assembly, upper and lower height overall limit assembly and anti-rotation positioning component; Measured workpiece is arranged between clamp assembly and lower clamp assembly, and measured workpiece at least has three aspects the hole that needs shutoff in a direction, and wherein measured workpiece has the plugging hole of three aspects of upper top layer face, lower round floor and a middle aspect at least; Lower shutoff seal in upper shutoff seal and lower clamp assembly in upper clamp assembly respectively with the curved surface close contact of the plugging hole oral area of the upper top layer face of measured workpiece, lower round floor; Has the curved surface close contact of the oral area of the plugging hole of aspect in one of them of the middle shutoff seal of a set of middle level shutoff assembly and measured workpiece at least; Between the middle aspect of upper jig plate and measured workpiece, be at least provided with two groups of shutoff dynamic balance assemblies; Shutoff dynamic balance assembly comprises depression bar, presses nut, nut and spring, the middle end of upper section of depression bar can slide in pressure nut through hole, depression bar upper end is spacing with nut, press nut to be arranged on upper jig plate by external thread, press nut upper end to fix with nut, press between the other end of nut and the shoulder of depression bar and clip spring, spring is through on depression bar, shoulder is located at the middle part of depression bar, and the bottom of depression bar contacts with the outside surface of aspect in any one of measured workpiece.
The core technology of the technical program is exactly between the middle aspect at upper jig plate and measured workpiece, to be at least provided with a series of shutoff dynamic balance assemblies; If utilize the snap-in force of the pressure nut adjustment spring in all shutoff dynamic balance assemblies, just meet the requirement of the optimal compression value of seal.This shutoff dynamic balance assembly is directly delivered to unnecessary shutoff pressure on the seal of lower round floor by the measured workpiece of contact, both meet the requirement of larger lower round floor plugging hole sealing force, also guaranteed the requirement of making a concerted effort of the plugging hole sealing force of less upper top layer face and the sealing of the plugging hole of a middle aspect.Recommendation arranges uniform shutoff dynamic balance assembly, and for example three shutoff dynamic balance assemblies, so that the size distribution of the shutoff power that the plugging hole of the upper and lower round floor of measured workpiece is subject to is more consistent.
Because described measured workpiece at least has three aspects the hole that needs shutoff in a direction, so, likely with regard to a more than middle aspect with plugging hole, in following embodiment, only there is for convenience a middle aspect.If measured workpiece exists the more than one middle aspect with plugging hole, so a series of shutoff dynamic balance assemblies need to contact the outside surface of aspect in any one of the bottom of each depression bar and measured workpiece.
Described upper clamp assembly comprises jig plate, upper top layer shutoff assembly, upper top layer shutoff assembly comprises block head, upper shutoff seal, upper block head is arranged on jig plate, and upper shutoff seal is elastic sealing element, and upper shutoff seal is fixed on block head.
Described lower clamp assembly comprises lower press plate and lower bottom shutoff assembly, lower bottom shutoff assembly comprises lower block head and lower shutoff seal, lower block head is arranged in lower press plate, and lower shutoff seal is elastic sealing element, and lower shutoff seal is fixed on lower block head.
Further technical scheme is, middle level shutoff assembly comprises middle depression bar, nut, clamp nut, spring, middle block head, adapter sleeve and middle shutoff seal, and the upper end of middle depression bar utilizes screw thread to be fixed on upper jig plate, and fixes with nut lock; The upper end of adapter sleeve is suspended on the thicker T-shaped shoulder in the lower end of middle depression bar by the thinner diametric hole in center, T-shaped shoulder is arranged in the macropore at adapter sleeve center, adapter sleeve can be on the axostylus axostyle of middle depression bar relative sliding, the upper end of middle block head is fixed in the lower end of adapter sleeve, the fixing middle shutoff seal in lower surface of middle block head, on the threaded rod of the middle-end of middle depression bar, engagement fixing clamp nut clip spring between clamp nut and the upper surface of adapter sleeve.Middle level shutoff assembly also can be as upper top layer shutoff assembly, only the connecting rod of block head is lengthened, make the curved surface close contact of the oral area of the plugging hole of shutoff seal and middle aspect reach sealing, but the required shutoff area of the plugging hole of considering top layer face and middle aspect also has gap, so be provided with elastic compression mode in middle level shutoff assembly, utilize the stressed gap of spring balancing and upper top layer shutoff assembly; When measured workpiece has multiple plugging holes to need the shutoff of multiple middle level shutoff assembly in middle aspect; Utilize the spring also can balance and the stressed gap of shutoff assembly in other, be conducive to the sealing equilibrium of forces of a series of middle shutoff assembly of aspect in sealing, avoid some middle level shutoff assemblies stressed excessive; When the sealing force of upper top layer shutoff assembly is inadequate, utilize nut in all middle level shutoff assemblies to adjust the snap-in force of spring, meet the requirement of the optimal compression value of seal.Because described measured workpiece at least has three aspects the hole that needs shutoff in a direction, so, likely with regard to a more than middle aspect with plugging hole, in following embodiment, only there is for convenience a middle aspect.If measured workpiece exists two or more middle aspects with plugging hole, so a series of middle level shutoff total performances will be respectively by the curved surface close contact of the oral area of the plugging hole of each middle aspect of the middle shutoff seal of its bottom and measured workpiece.
Further technical scheme is, the described assembly of guide-localization up and down comprises guide rod, guide pin bushing and nut, guide pin bushing lower end is fixed in lower press plate, the upper end of guide pin bushing is connected with guide rod by internal thread and fixes with nut lock, guide rod is through in the through hole on jig plate, and upper jig plate is along guide rod relative sliding.Utilize this programme that upper and lower clamp assembly can accurately be put in place when closure, thereby the seal bore of seal and measured workpiece is better mated.
Further technical scheme is, the described limit assembly of height overall up and down comprises spacing depression bar and nut, and spacing depression bar upper end is fixed on upper jig plate with nut, and the lower end of spacing depression bar contacts with lower press plate.This programme is to avoid the compressibility of the seal of lower round floor to be retained to rational numerical value, if the height of the compression deformation of seal is excessive, namely compressibility is excessive, and compressibility is crossed senior general reduces the life-span of seal.We can determine by adjusting the total length of upper and lower height overall limit assembly the total compression amount of the compressed value of the cumulative seal that reasonably comprises lower round floor of all seals of many levels.
Described anti-rotation positioning component comprises location structure and anti-rotation structure, and location structure comprises alignment pin and securing member, and alignment pin utilizes securing member to be arranged in lower press plate, and alignment pin engages with pilot hole reserved on measured workpiece in correct attitude.The reserved pilot hole that utilizes measured workpiece, is inserted in measured workpiece in lower press plate, meets measured workpiece relatively in the centralized positioning requirement of lower press plate.
Further technical scheme is, described anti-rotation structure comprises rotation prevention pin shaft, Anti-rotary block and securing member, axis utilizes threaded rod position to be connected with the threaded hole of Anti-rotary block in the rotation prevention pin shaft of horizontality, Anti-rotary block is fixed in lower press plate, the contacts side surfaces of the positioning boss of the axial end of rotation prevention pin shaft and measured workpiece outline.Treating non-centrosymmetrical measured workpiece not only needs centralized positioning, also needs circumferential location, and this programme is exactly the requirement in order to solve circumferential location.
Originally the general using method of fixture of leaking hunting is (with the leak hunting air leak tester of method of the Wet-dry of the manual loading and unloading of press-down type, be described, this air leak tester shows as accompanying drawing 6):
Upper jig plate is arranged on by web member on the pressure head of the main frame actuator that leaks hunting, lower press plate is arranged on the lower mainboard of the main frame that leaks hunting, when leaking hunting operation, actuator rises to a high position by upper jig plate, manually measured workpiece is arranged on the protuberance cylinder of the alignment pin on lower clamp, need the bottom surface of the measured workpiece of sealing to drop on the seal on lower press plate load plane, the convex table top of measured workpiece outline contacts with rotation prevention pin shaft.Actuator is down to low level by upper jig plate, upper shutoff seal contacts with the plugging hole of the upper top layer face of measured workpiece, then middle shutoff seal contacts with the plugging hole of the middle aspect of measured workpiece, spring on middle level shutoff assembly is compressed, the head that presses of shutoff dynamic balance assembly contacts with the outside surface of the middle aspect of measured workpiece, lower shutoff seal contacts with the plugging hole of the lower round floor of measured workpiece, and the spacing lower surface that presses head of upper and lower height overall limit assembly contacts with lower press plate.So far the seal bore of three aspects is all by seal shutoff, now measured workpiece is by upper lower clamp closure, the cavity detecting is by omnibearing sealing, system starts to airtight cavity injecting compressed air from lower clamp assembly, and differential pressure leak detection instrument starts to detect, or water tank starts water filling and observes the trace of bubble, thereby can further understand the position that measured workpiece leaks, the actuator of main frame of leaking hunting after detection completes sets back, and upper jig plate moves up, and manual measured workpiece is taken out.
So circulate, carried out the task of leaking hunting of primary measured workpiece.
The fixture beneficial effect compared with prior art that leaks hunting that has a multilayer shutoff face in a direction of the present invention is:
The fixture that leaks hunting that has a multilayer shutoff face in a direction that the present invention proposes can adapt to various ways measured workpiece, can meet automatic and the semi-automatic requirement of leaking hunting, this equipment can both be worked the shutoff seal of each shutoff aspect under suitable shutoff pressure, the life-span of shutoff seal improves greatly, the reliability of leak detecting device is higher, improved production efficiency, manufacture, installation, debugging and operating cost are lower.
In the embodiment of principle of work that describes the fixture that originally leaks hunting, we are only for a kind of measured workpiece, the specific aspect of this measured workpiece of shutoff and the needed hole of specific cavity, and on leaking hunting main frame, one uses, obviously, the fixture that originally leaks hunting can also, for many measured workpieces of other kind, be used on the main frame that leaks hunting of other kind, certainly this also needs the core feature in this programme to carry out the modification of physical dimension aspect, just can satisfy the demand.
accompanying drawing explanation
Described front and back in this instructions refer to along the front and back of measured workpiece transported substance flow path direction, and described left and right also refers to the left and right in the face of direction forward.
Fig. 1 be as leak hunting operation use a direction have multilayer shutoff face the fixture that leaks hunting outward appearance axle survey view;
Fig. 2 is that this kind of measured workpiece 13 bottom axles are surveyed view, has shown the plugging hole of three shutoff faces in figure, and the cavity that the plugging hole of three shutoff faces relates to is communicated with;
Fig. 3 is that the axle that shows lower clamp assembly, upper and lower guide-localization assembly, anti-rotation positioning component and measured workpiece 13 is surveyed view;
The difference of Fig. 4 and Fig. 1 is that measured workpiece 13 is arranged on lower clamp assembly, and upper clamp assembly and lower clamp assembly, in open mode, can pick and place measured workpiece under this state;
Fig. 5 is the front elevation of the fixture that leaks hunting of Fig. 1;
Fig. 6 be the Wet-dry of the manual loading and unloading of press-down type leak hunting method air leak tester axle survey view; In order to boost productivity, at the lower mainboard of the main frame that leaks hunting, the three covers fixture that leaks hunting has been installed, the measured workpiece 13 of having put on every cover leaks hunting the lower press plate of fixture; So when the actuator action of the main frame that leaks hunting once can first detect three measured workpieces with differential pressure method dry-type leak hunting simultaneously, the method detection speed leaks hunting higher than wet type, if do not have leakage problem that measured workpiece is taken out, but can further carry out again the immersion bubble wet program of leaking hunting if any leakage problem, by the bubble producing, can determine that on the one hand concrete that measured workpiece leaks, can determine on the other hand where measured workpiece leaks, and this detection mode is prior art;
Fig. 7 is the leak hunting A-A cut-open view of fixture of Fig. 5;
Fig. 8 is that the axle of middle level shutoff assembly is surveyed view;
Fig. 9 is that the B-B of Fig. 8 analyses and observe axonometric drawing;
Wherein: 1-lower clamp assembly, 2-Anti-rotary block, the upper and lower guide-localization assembly of 3-, the spacing depression bar of 4-, 5-shutoff dynamic balance assembly, 6-middle level shutoff assembly, 7-nut, 8-presses nut, the upper clamp assembly of 9-, the upper jig plate of 9a-, 10-alignment pin, shutoff seal under 11-, 12-air-filled pore, 13-measured workpiece, the side of 14-boss, the upper top layer face of 15-plugging hole, aspect plugging hole in 16-, round floor plugging hole under 17-, round floor under 18-, 19-guide rod, aspect in 20-, 21-rotation prevention pin shaft, 22-boss, 23-connecting link, 24-lower press plate, the upper top layer face of 25-, shutoff seal in 26-, 27-height gag lever post, 28-lower press plate seal groove, 29-guide pin bushing, the upper shutoff seal of 30-, the upper block head of 31-, the upper mainboard of 32-, 33-pressure head, 34-differential pressure type leak detector, 35-water tank, the 36-main frame that leaks hunting, 37-piston cylinder, 38-sliding sleeve, 39-spring (butterfly spring), 40-depression bar, depression bar in 41-, 42-adapter sleeve, block head in 43-, 44-T type shoulder.
embodiment
Below in conjunction with accompanying drawing, the fixture that leaks hunting that has a multilayer shutoff face in a direction of the present invention is further described.
in Fig. 1 to 9, shown the General Implementing example in a direction with the fixture that leaks hunting of multilayer shutoff face.
In Fig. 1, shown the one-piece construction of the fixture that leaks hunting, the present embodiment is the scheme for the measured workpiece design shown in Fig. 2.In the present embodiment, all shutoff seals are all the plastic materials that adopts enough toughness; The curved surface of shutoff seal shutoff comprises plane, cambered surface or the conical surface; The hole of the shutoff of any layer shutoff face can be the hole that circular hole, elliptical aperture, rectangular opening or arbitrary curve surround, and is all circular hole in the present embodiment; In the present embodiment, all springs are dish springs, can certainly adopt the spring of other known pattern such as spiral spring that steel wire makes.
In a direction, there is the fixture that leaks hunting of multilayer shutoff face, comprise clamp assembly 9, shutoff dynamic balance assembly 5, lower clamp assembly 1, middle level shutoff assembly, upper and lower guide-localization assembly 3, upper and lower height overall limit assembly and anti-rotation positioning component; Measured workpiece 13 is arranged between clamp assembly and lower clamp assembly, measured workpiece has three aspects the hole that needs shutoff in a direction, and wherein measured workpiece has the plugging hole 15,17,16 of three aspects of upper top layer face 25, lower round floor 18 and a middle aspect 20; Lower shutoff seal 11 in upper shutoff seal 30 and lower clamp assembly in upper clamp assembly respectively with the curved surface close contact of the oral area of the plugging hole of the upper top layer face of measured workpiece, lower round floor; There is the upper end of six cover middle level shutoff assemblies 6 to be fixed on jig plate, in the middle shutoff seal 26 of each middle level shutoff assembly 6 and one of them of measured workpiece, the curved surface close contact of the oral area of the plugging hole of aspect is provided with three groups of uniform shutoff dynamic balance assemblies 5 between upper jig plate 9a and the middle aspect of measured workpiece; Shutoff dynamic balance assembly comprises depression bar 40, presses nut 8, nut 7 and spring 39, the middle end of upper section of depression bar can slide in pressure nut through hole, depression bar upper end is spacing with nut 7, press nut to be arranged on upper jig plate by external thread, press nut upper end nut 7 fixing, press between the other end of nut and the shoulder of depression bar and clip spring, spring is through on depression bar, shoulder is located at the middle part of depression bar, and the bottom of depression bar contacts with the outside surface of the middle aspect of measured workpiece.In figure, 12 have shown that shutoff detects the air-filled pore 12 of needs.Each shutoff dynamic balance assembly is to press nut by rotation to the snap-in force of measured workpiece, thereby the pretightning force that changes spring realizes, after adjustment, with nut, locked on upper jig plate, in conjunction with the adjustment of middle level shutoff assembly, by rotation, press nut 8 can find the optimal compression value of the seal request of upper shutoff seal 30.
Fig. 2 has shown that the cavity that the plugging hole of three shutoff faces of measured workpiece 13 relates to is communicated with, and therefore testing only needs to arrange an air-filled pore 12(in lower press plate); If the cavity that the plugging hole of three shutoff faces relates to is disconnected, still can adopt the fixture that originally leaks hunting, only need independent air-filled pore be set for independent cavity, these are all prior arts.
Described upper clamp assembly 9 comprises jig plate 9a, upper top layer shutoff assembly, upper top layer shutoff assembly comprises block head 31, upper shutoff seal 30, upper block head is arranged on jig plate, and upper shutoff seal is elastic sealing element, and upper shutoff seal is fixed on block head.
Described lower clamp assembly 1 comprises lower press plate 24 and lower bottom shutoff assembly, lower bottom shutoff assembly comprises lower block head 28 and lower shutoff seal 11, lower block head is arranged in lower press plate, and lower shutoff seal is elastic sealing element, and lower shutoff seal is fixed on lower block head.
On having shown in Fig. 6, jig plate is connected with the upper mainboard of upper jig plate elevating mechanism with the pressure head 33 leaking hunting on main frame 36 by connecting link 23.In Fig. 6, shown that lower press plate is fixed on the lower mainboard of the main frame that leaks hunting.Upper mainboard is to be the closures that moved up and down upper and lower clamp assembly under effect at the piston cylinder of actuator 37, thereby carries out shutoff task.When needs adopt immersion bubble wet to leak hunting inspection, lower press plate and measured workpiece need to be immersed in the liquid of water tank 35.
At Fig. 8 and 9, shown in middle aspect have six middle level shutoff assemblies 6, middle level shutoff assembly comprises middle depression bar 41, nut 7, clamp nut 7a, spring 39, middle block head 43, adapter sleeve 42 and middle shutoff seal 26, the upper end of middle depression bar utilizes screw thread to be fixed on upper jig plate, and fixes with nut lock; The upper end of adapter sleeve is suspended on the thicker T-shaped shoulder 44 in the lower end of middle depression bar by the thinner diametric hole in center, T-shaped shoulder is arranged in the macropore at adapter sleeve center, adapter sleeve can be on the axostylus axostyle of middle depression bar relative sliding, the upper end of middle block head is fixed in the lower end of adapter sleeve, the fixing middle shutoff seal in lower surface of middle block head, on the threaded rod of the middle-end of middle depression bar, engagement fixing clamp nut clip spring between clamp nut and the upper surface of adapter sleeve.Each middle level shutoff assembly is by rotation clamp nut 7a to the snap-in force of measured workpiece, thereby the pretightning force that changes spring realizes, after adjustment, with nut, locked on middle depression bar, in conjunction with the adjustment of shutoff dynamic balance assembly, by rotation clamp nut 7a, can find the optimal compression value of the seal request of middle shutoff seal 26.
At Fig. 7, shown that upper and lower guide-localization assembly comprises guide rod 19, guide pin bushing 29 and nut 7, guide pin bushing lower end is fixed in lower press plate 24, the upper end of guide pin bushing is connected with guide rod by internal thread and uses nut 7 to be locked, guide rod is through in the through hole on jig plate, and upper jig plate is along guide rod relative sliding.In order to extend the life-span of upper jig plate, in the through hole on the upper jig plate engaging with guide rod, be also provided with a lining 38.
At Fig. 5, also shown that upper and lower height overall limit assembly comprises spacing depression bar 4 and nut 7, spacing depression bar upper end is fixed on upper jig plate with nut, and the lower end of spacing depression bar contacts with lower press plate 24.Operator, pick and place measured workpiece one side and be provided with two upper and lower height overall limit assemblies, while moving to upper limit due to upper and lower height overall limit assembly with upper jig plate, just can not affect operator picks and places measured workpiece; Tested fixture rear side arranges height overall gag lever post in lower press plate can not affected operator and pick and place measured workpiece, so, owing to originally leaking hunting, fixture profile is smaller, the shaft shoulder platform 27 that utilizes guide rod 19 at tested fixture rear side as on the lower limit of jig plate, when upper jig plate is descending, shaft shoulder platform 27 contacts (in Fig. 7, showing) with upper jig plate 9a.Therefore this clamp assembly has been laid with three assemblies with height overall limit function approaching around measured workpiece vertical center line, wherein two are arranged on jig plate for upper and lower height overall limit assembly, and another shaft shoulder platform 27 with guide rod 19 is arranged in lower press plate as the lower limit of upper jig plate.The height of upper and lower height overall limit assembly is realized by rotary stopper depression bar 4 and guide rod 19, the optimal compression value that highly can find the seal request of lower shutoff seal 11 by adjusting this.
At Fig. 1 and 4, shown two of 2 left and right anti-rotation positioning component, anti-rotation positioning component comprises location structure and anti-rotation structure, location structure comprises alignment pin 10 and securing member 7a, alignment pin utilizes securing member to be arranged in lower press plate 24, and alignment pin engages with pilot hole reserved on measured workpiece 13 in correct attitude.The pilot hole that is reserved in lower round floor on this measured workpiece 13 is also lower round floor plugging hole 17, and the pilot hole of the measured workpiece also having is the hole of independent one or two small diameter of setting.If obviously the pilot hole of measured workpiece is the hole of two small diameters, can omit following anti-rotation structure.
Described anti-rotation structure comprises rotation prevention pin shaft 21, Anti-rotary block 2 and securing member, axis utilizes threaded rod position to be connected with the threaded hole of Anti-rotary block in the rotation prevention pin shaft of horizontality, Anti-rotary block is fixed in lower press plate 24, and the axial end of rotation prevention pin shaft contacts with the side 14 of the positioning boss 22 of measured workpiece outline.
Obviously, relevant technologies feature in an embodiment can reasonably exchange and omit within the scope of rights protection.
Claims (8)
1. in a direction, there is the fixture that leaks hunting of multilayer shutoff face, comprise clamp assembly (9), shutoff dynamic balance assembly (5), lower clamp assembly (1), middle level shutoff assembly, upper and lower guide-localization assembly (3), upper and lower height overall limit assembly and anti-rotation positioning component; Measured workpiece (13) is arranged between clamp assembly and lower clamp assembly, measured workpiece at least has three aspects the hole that needs shutoff in a direction, and wherein measured workpiece has the plugging hole (15,17,16) of three aspects of upper top layer face (25), lower round floor (18) and a middle aspect (20) at least; Lower shutoff seal (11) in upper shutoff seal (30) and lower clamp assembly in upper clamp assembly respectively with the curved surface close contact of the oral area of the plugging hole of the upper top layer face of measured workpiece, lower round floor; The curved surface close contact of the oral area of the plugging hole of aspect in the middle shutoff seal (26) that has a set of middle level shutoff assembly (6) at least and one of them of measured workpiece; It is characterized in that, between upper jig plate (9a) and the middle aspect of measured workpiece, be at least provided with two groups of shutoff dynamic balance assemblies (5); Shutoff dynamic balance assembly comprises depression bar (40), presses nut (8), nut (7) and spring (39), the middle end of upper section of depression bar can slide in pressure nut through hole, depression bar upper end is spacing with nut, press nut to be arranged on upper jig plate by external thread, press nut upper end to fix with nut, press between the other end of nut and the shoulder of depression bar and clip spring, spring is through on depression bar, shoulder is located at the middle part of depression bar, and the bottom of depression bar contacts with the outside surface of aspect in any one of measured workpiece.
2. the fixture that leaks hunting in a direction with multilayer shutoff face according to claim 1, it is characterized in that, described upper clamp assembly (9) comprises jig plate (9a), upper top layer shutoff assembly, upper top layer shutoff assembly comprises block head (31), upper shutoff seal (30), upper block head is arranged on jig plate, upper shutoff seal is elastic sealing element, and upper shutoff seal is fixed on block head.
3. the fixture that leaks hunting in a direction with multilayer shutoff face according to claim 1, it is characterized in that, described lower clamp assembly (1) comprises lower press plate (24) and lower bottom shutoff assembly, lower bottom shutoff assembly comprises lower block head (28) and lower shutoff seal (11), lower block head is arranged in lower press plate, lower shutoff seal is elastic sealing element, and lower shutoff seal is fixed on lower block head.
4. the fixture that leaks hunting in a direction with multilayer shutoff face according to claim 1, it is characterized in that, middle level shutoff assembly (6) comprises middle depression bar (41), nut (7), clamp nut (7a), spring (39), middle block head (43), adapter sleeve (42) and middle shutoff seal (26), the upper end of middle depression bar utilizes screw thread to be fixed on upper jig plate, and fixes with nut lock; The upper end of adapter sleeve is suspended on the thicker T-shaped shoulder (44) in the lower end of middle depression bar by the thinner diametric hole in center, T-shaped shoulder is arranged in the macropore at adapter sleeve center, adapter sleeve can be on the axostylus axostyle of middle depression bar relative sliding, the upper end of middle block head is fixed in the lower end of adapter sleeve, the fixing middle shutoff seal in lower surface of middle block head, on the threaded rod of the middle-end of middle depression bar, engagement fixing clamp nut clip spring between clamp nut and the upper surface of adapter sleeve.
5. the fixture that leaks hunting in a direction with multilayer shutoff face according to claim 1, it is characterized in that, the described assembly of guide-localization up and down comprises guide rod (19), guide pin bushing (29) and nut (7), guide pin bushing lower end is fixed in lower press plate (24), the upper end of guide pin bushing is connected with guide rod by internal thread and uses nut (7) to be locked, guide rod is through in the through hole on jig plate, and upper jig plate is along guide rod relative sliding.
6. the fixture that leaks hunting in a direction with multilayer shutoff face according to claim 1, it is characterized in that, the described limit assembly of height overall up and down comprises spacing depression bar (4) and nut (7), spacing depression bar upper end is fixed on upper jig plate with nut, and the lower end of spacing depression bar contacts with lower press plate (24).
7. the fixture that leaks hunting in a direction with multilayer shutoff face according to claim 1, it is characterized in that, described anti-rotation positioning component comprises location structure and anti-rotation structure, location structure comprises alignment pin (10) and securing member, it is upper that alignment pin utilizes securing member to be arranged on lower press plate (24), and alignment pin engages with the upper reserved pilot hole of measured workpiece (13) in correct attitude.
8. the fixture that leaks hunting in a direction with multilayer shutoff face according to claim 7, it is characterized in that, described anti-rotation structure comprises rotation prevention pin shaft (21), Anti-rotary block (2) and securing member, axis utilizes threaded rod position to be connected with the threaded hole of Anti-rotary block in the rotation prevention pin shaft of horizontality, it is upper that Anti-rotary block is fixed on lower press plate (24), and the axial end of rotation prevention pin shaft contacts with the side (14) of the positioning boss (22) of measured workpiece outline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320632351.5U CN203551218U (en) | 2013-10-14 | 2013-10-14 | Leak hunting clamp with multilayer plugging surface in one direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320632351.5U CN203551218U (en) | 2013-10-14 | 2013-10-14 | Leak hunting clamp with multilayer plugging surface in one direction |
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| CN203551218U true CN203551218U (en) | 2014-04-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487215A (en) * | 2013-10-14 | 2014-01-01 | 津伦（天津）精密机械股份有限公司 | Leak hunting clamp with multilayer plugging surface in one direction |
| CN106404293A (en) * | 2016-10-17 | 2017-02-15 | 大连现代辅机开发制造有限公司 | Crankcase leakage test sealing method and sealing device |
| CN108007647A (en) * | 2017-11-29 | 2018-05-08 | 郑州斯倍思机电有限公司 | A kind of plugging device of the airtight performance test bench of crankcase |
-
2013
- 2013-10-14 CN CN201320632351.5U patent/CN203551218U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487215A (en) * | 2013-10-14 | 2014-01-01 | 津伦（天津）精密机械股份有限公司 | Leak hunting clamp with multilayer plugging surface in one direction |
| CN106404293A (en) * | 2016-10-17 | 2017-02-15 | 大连现代辅机开发制造有限公司 | Crankcase leakage test sealing method and sealing device |
| CN108007647A (en) * | 2017-11-29 | 2018-05-08 | 郑州斯倍思机电有限公司 | A kind of plugging device of the airtight performance test bench of crankcase |
| CN108007647B (en) * | 2017-11-29 | 2019-12-17 | 郑州斯倍思机电有限公司 | plugging device for crankcase gas tightness test board |
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Denomination of utility model: The fixture that leaks hunting that there is multilayer shutoff face in a direction Effective date of registration: 20140928 Granted publication date: 20140416 Pledgee: Tianjin torch Pioneer Park coordination service center Pledgor: Jinlun (Tianjin) Precision Machinery Co., Ltd. Registration number: 2014120000051 |
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Date of cancellation: 20151104 Granted publication date: 20140416 Pledgee: Tianjin torch Pioneer Park coordination service center Pledgor: Jinlun (Tianjin) Precision Machinery Co., Ltd. Registration number: 2014120000051 |
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