CN210426907U - Fixed-point leak detection device - Google Patents
Fixed-point leak detection device Download PDFInfo
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- CN210426907U CN210426907U CN201921468844.3U CN201921468844U CN210426907U CN 210426907 U CN210426907 U CN 210426907U CN 201921468844 U CN201921468844 U CN 201921468844U CN 210426907 U CN210426907 U CN 210426907U
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Abstract
The utility model discloses a fixed point leak hunting device, include: the bracket is used for mounting and supporting other mechanisms; the detection piston is arranged above the bracket and used for checking the cleaned workpiece; the positioning mechanism is arranged above the detection piston and used for positioning the jig; and the jacking mechanism is arranged above the positioning mechanism and used for downwards jacking the workpiece to be cleaned and matching with the jig to limit the workpiece to be cleaned. According to the scheme, the positioning mechanism and the detection piston are arranged on the same reference, so that the workpiece and the detection piston are accurately positioned; an O-shaped sealing ring is arranged on the outer side of the piston rod, and the inner cavity of the workpiece can be completely sealed when the O-shaped sealing ring is contracted, extruded and expanded; the workpiece is pressed on the jig when the coping mechanism is pressed down, so that the workpiece is prevented from displacing in the airtight detection process, and the stability of the test process is ensured.
Description
Technical Field
The utility model relates to the leak testing field especially involves a fixed point leak hunting device.
Background
With the continuous progress of science and technology, the automobile industry is rapidly developed, and simultaneously, higher requirements are put forward on the yield and the quality of automobiles. Because the automobile shock absorber belongs to a high-precision part, the shock absorber is a vulnerable accessory in the using process of an automobile, the working condition of the shock absorber directly influences the running stability of the automobile and the service life of other parts, and therefore the inner cavity of the shock absorber must meet the requirements of good tightness and no air leakage. Before the part is used for assembly, the process of tightness detection is carried out, the tightness detection refers to the detection of the tightness of a sample and whether the sample leaks or not, such as leakage, and the part is a defective product.
As the leak detection method, there are commonly used methods: a. the water immersion method is characterized in that a tested container is immersed in water, and the tightness of the container is judged by observing whether bubbles exist or not and the quantity of the bubbles; b. the dry air method controls the difference of the internal pressure and the external pressure of a tested sample through vacuum pumping or air pressurization, and if leakage exists, the difference of the internal pressure and the external pressure is reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model aims to provide a fixed point leak detection device.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a fixed-point leak detection device comprises a leak detection device,
the leak detection bracket is used for mounting and supporting other mechanisms;
the detection piston is arranged above the leakage detection bracket and is used for detecting a workpiece to be cleaned;
the positioning mechanism is arranged above the detection piston and used for positioning the corresponding positioning jig;
and the jacking mechanism is arranged above the leakage detection support and used for downwards jacking a workpiece to be cleaned and matching with the positioning jig to limit the workpiece to be cleaned.
Further, the detection piston comprises a piston rod and a quick switching sleeve sleeved at the bottom end of the piston rod, a pressure stopping portion is arranged at the bottom end of the piston rod in a downward protruding mode, the bottom of the quick switching sleeve is opposite to the position of the pressure stopping portion, a through hole is formed in the position, opposite to the position, of the pressure stopping portion, an elastic piece is sleeved outside the pressure stopping portion, one end of the elastic piece abuts against the bottom surface of the piston rod, one end of the elastic piece abuts against the bottom of the quick switching sleeve, and an airtight detection boss is further sleeved on the outer side of the quick switching.
Furthermore, the middle of the piston rod is provided with a vent pipe along the axis direction of the piston rod, the side surface of the piston rod is provided with a gas outlet and a gas inlet, the gas outlet and the gas inlet are communicated with the vent pipe, and the top end of the piston rod is also provided with an adjusting and adapting hole.
Further, the elastic member is a check spring.
Furthermore, an O-shaped sealing ring is further arranged on the outer side of the piston rod, and the O-shaped sealing ring is arranged at the top position of the quick switching sleeve.
Further, the leak hunting support includes bottom leak hunting support, sets up in the locating platform of bottom leak hunting support top, set up in the pressure of locating platform top attaches the platform, locating platform and bottom leak hunting support are through first support column connection, pressure attaches platform and locating platform and passes through the second support column connection.
Further, positioning mechanism includes primary positioning mechanism and secondary positioning mechanism, primary positioning mechanism is used for and fixes a position the position of positioning jig on the chain, secondary positioning mechanism is used for adjusting and fixing a position the positioning jig is in the ascending position of vertical direction.
Further, secondary positioning mechanism include secondary location cylinder set up in bottom leak hunting support lower surface, the telescopic shaft of secondary location cylinder upwards wears out bottom leak hunting support is connected with the connecting axle, the other end of connecting axle is connected positioning platform, positioning platform arranges and is provided with a plurality of reference column, the reference column is located positioning jig below.
Further, primary positioning mechanism includes the primary positioning cylinder, the primary positioning cylinder set up in the second support column, the locating pin of primary positioning cylinder moves towards downwards the positioning jig sets up for stretch out downwards push down the positioning jig is fixed a position.
Further, the mechanism of pushing up includes the cylinder of pushing up, pushes up telescopic shaft and guiding axle, the cylinder of pushing up set up in on the platform is attached to the pressure, the flexible axial of pushing up is worn out down the platform is attached to the pressure, the guiding axle with the telescopic shaft parallel arrangement of pushing up, and one end is worn to locate the platform is attached to the pressure, and the telescopic shaft is attached to the other end connection pushing up.
The utility model has the advantages that: the workpiece and the detection piston are accurately positioned on the same reference through the positioning mechanism and the detection piston; an O-shaped sealing ring is arranged on the outer side of the piston rod, and the O-shaped sealing ring can completely seal the inner cavity of the workpiece when being extruded and expanded; the workpiece is pressed on the positioning jig when the coping mechanism is pressed down, so that the workpiece is prevented from displacing in the airtight detection process, and the stability of the test process is ensured.
Drawings
Fig. 1 is a structural front view of a fixed-point leak detection device of the present invention;
fig. 2 is a left side view of the structure of the fixed point leak detection device of the present invention;
FIG. 3 is a schematic structural view of the detection piston of the present invention;
fig. 4 is a cross-sectional view of the structure of the detection piston of the present invention.
Detailed Description
For the purpose of illustrating the spirit and purposes of the present invention, the present invention will be further described with reference to the accompanying drawings and specific embodiments.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is also changed accordingly, and the connection may be a direct connection or an indirect connection.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
In this specification, "/" denotes "or" unless otherwise specified.
Referring to fig. 1-4, a specific embodiment of the present invention is provided, a fixed point leak detection apparatus, comprising:
a leak detection bracket 70 for mounting and supporting other mechanisms;
a detection piston 60 disposed below the leak detection support 70 for detecting the workpiece 20 to be cleaned;
the positioning mechanism is arranged above the detection piston 60 and used for positioning the positioning jig 40;
and the jacking mechanism 10 is arranged above and used for downwards jacking the workpiece 20 to be cleaned and matching with the positioning jig 40 to limit the cleaned workpiece 20.
The positioning jig 40 is placed on the chain 41, the workpiece 20 is placed on the positioning jig 40 in a limiting mode, the workpiece 20 and the positioning jig 40 stop when reaching a leakage detection station under the driving of the chain 41, the primary positioning mechanism 30 presses the positioning jig 40 downwards to be positioned on the chain 41, the secondary positioning mechanism 50 pushes upwards to completely separate the positioning jig 40 from the chain 41 and simultaneously has the function of completely positioning the positioning jig 40, then the pressing mechanism 10 presses downwards to tightly press the workpiece 20 on the positioning jig 40, the detection piston 60 extends into the inner cavity of the workpiece 20 from the bottom, the O-shaped sealing ring 62 on the piston rod 61 is pressed and expanded to seal the inner cavity of the workpiece 20, compressed gas is input into the inner cavity of the workpiece 20 from the piston rod 61, whether the numerical value change of the flowmeter is qualified or not is detected, whether the requirement of 2.5ml/min is met or not is detected, and therefore the.
Referring to fig. 3 and 4, the detection piston 60 includes a piston rod 61, and is sleeved on the quick switching sleeve 65 at the bottom end of the piston rod, the bottom end of the piston rod 61 protrudes downwards to be provided with a pressing portion 68, the bottom of the quick switching sleeve 65 is just opposite to the position of the pressing portion 68, an elastic part is sleeved outside the pressing portion 68, one end of the elastic part abuts against the bottom surface of the piston rod 61, one end of the elastic part abuts against the bottom of the quick switching sleeve 65, and the outer side of the quick switching sleeve 65 is further sleeved with an airtight detection boss 65.
The middle part of the piston rod 61 along the axis direction is provided with a vent pipe, the side surface of the piston rod 61 is provided with an air outlet 64 and an air inlet 66, the air outlet 64 and the air inlet 66 are communicated with the vent pipe, the top end of the piston rod 61 is also provided with an adjusting and adapting hole 69, the air outlet 64 is arranged at the upper half part of the piston rod 61, the air inlet 66 is arranged at the lower half part of the piston rod 61, and compressed air enters the vent pipe in the piston rod 61 from the air inlet 66 and is input into the.
During testing, the workpiece 20 to be detected is inflated firstly until the pressure of the inner cavity of the workpiece 20 is 1Mpa, then the workpiece 20 is inflated for a certain time again to keep stable air pressure, and finally, the workpiece 20 is qualified if the air pressure counting value changes within an allowable range during pressure maintaining through detecting the change of the air pressure of the inner cavity of the workpiece 20; if the air pressure count value changes beyond the allowable range, the workpiece 20 is a defective product.
Specifically, the elastic element is a stop pressure spring 67, and the stop pressure spring 67 is used for driving the piston rod 61 to return and releasing the O-shaped sealing ring to restore to the original state. An O-shaped sealing ring 62 is further arranged on the outer side of the piston rod 61, the O-shaped sealing ring 62 is arranged at the top of the quick switching sleeve 65, and when the piston rod 61 extends into the inner cavity of the workpiece 20, the quick switching sleeve 65 extrudes the O-shaped sealing ring in the middle of the piston rod 61 to expand the O-shaped sealing ring, so that the inner cavity of the workpiece 20 is sealed.
Referring to fig. 2, leak detection support 70 includes a bottom support 71, a positioning platform 72 disposed above bottom support 71, and a pressing platform 73 disposed above positioning platform 72, where positioning platform 72 and bottom support 71 are connected by a first support column 75, and pressing platform 73 and positioning platform 72 are connected by a second support column 74. Between the positioning platform 72 and the pressing platform 73 is a detection station.
Specifically, positioning mechanism includes primary positioning mechanism 30 and secondary positioning mechanism 50, and primary positioning mechanism 30 for fix a position this positioning jig 40 in the position on chain 41, and secondary positioning mechanism 50 for adjust and fix a position this positioning jig 40 in vertical ascending position, through mutually supporting of primary positioning mechanism 30 and secondary positioning mechanism 50, plays the complete localization of location to positioning jig 40, guarantees that work piece 20 and detection piston 60 are accurate to be fixed a position.
Specifically, the primary positioning mechanism 30 includes a primary positioning cylinder, the primary positioning cylinder is disposed on the second supporting column, and the positioning pin of the primary positioning cylinder is disposed downward toward the positioning fixture 40 and is used for extending downward to press the positioning fixture 40 for positioning. The location cylinder is 4 in this embodiment, sets up respectively in the both sides of positioning jig 40, and the telescopic shaft of location cylinder connects the locating pin, drives the locating pin downstream, inserts the locating hole on the positioning jig 40, realizes tentatively fixing a position.
Referring to fig. 1, secondary positioning mechanism 50 includes secondary positioning cylinder 51, set up in bottom support 71 lower surface, secondary positioning cylinder 51's telescopic shaft upwards wears out bottom support 71 and is connected with connecting axle 52, the locating platform is connected to the other end of connecting axle 52, the locating platform is arranged and is provided with a plurality of reference column, the reference column is located positioning jig 40 below, after first location, connecting axle 52 upward movement drives positioning jig 40 and moves in vertical direction, positioning jig 40 that move to the high position that corresponds, and the cooperation is pushed down mechanism 10 and is pushed down, fix positioning jig 40 and work piece 20.
During operation, work piece 20 is placed on positioning jig 40, positioning jig 40 moves along with chain 41 on chain 41, when arriving detection station (the below of mechanism 10 that bears down on one's head), chain 41 stop motion, the primary positioning mechanism 30 that is located positioning jig 40 both sides pushes down, four locating pins are inserted on positioning jig 40's locating hole, be equivalent to four corners location, X promptly, Y axle location is accomplished, secondary positioning mechanism 50 pushes up, make positioning jig 40 break away from chain 41 and reach Z axle (vertical direction) location, positioning jig 40 and work piece 20 have realized fixing a position completely this moment.
Referring to fig. 1, the jacking mechanism 10 includes a jacking cylinder 11, a jacking telescopic shaft 13 and a guide shaft 12, the jacking cylinder 11 is arranged on the pressure attaching platform, the jacking telescopic shaft 13 penetrates out of the pressure attaching platform 73 downwards, the guide shaft 12 and the jacking telescopic shaft 13 are arranged in parallel, one end of the guide shaft is arranged on the pressure attaching platform in a penetrating mode, the other end of the guide shaft is connected with the jacking telescopic shaft 13, the jacking telescopic shaft 13 extends out downwards to press the top end of a workpiece 20, the workpiece 20 is pressed by a force above 200KG when the cylinder of the jacking mechanism 10 is pressed downwards, the workpiece 20 is prevented from moving in the airtight detection process, and the precision of detecting the workpiece 20 is improved.
According to the scheme, the positioning mechanism and the detection piston 60 are on the same reference, so that the workpiece 20 and the detection piston 60 are accurately positioned; an O-shaped sealing ring 62 is arranged on the outer side of the piston rod 61, and when the O-shaped sealing ring is extruded and expanded, the inner cavity of the workpiece 20 can be completely sealed; when the capping mechanism 10 is pressed down, the workpiece 20 is pressed on the positioning jig 40, so that the workpiece 20 is prevented from being displaced in the airtight detection process, and the stability of the test process is ensured.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (10)
1. A fixed-point leak detection device is characterized by comprising,
a leak detection support;
the detection piston is arranged below the leakage detection bracket and is used for detecting a workpiece;
the positioning mechanism is arranged above the detection piston and used for positioning the corresponding positioning jig;
and the jacking mechanism is arranged above the positioning mechanism and used for downwards jacking the workpiece and matching with the positioning jig to limit the workpiece.
2. The fixed-point leak detection device according to claim 1, wherein the detection piston comprises a piston rod and a quick-switching sleeve sleeved at the bottom end of the piston rod, a pressure stop portion is arranged at the bottom end of the piston rod in a downward protruding manner, a through hole is formed in the position, right opposite to the pressure stop portion, of the bottom of the quick-switching sleeve, an elastic member is sleeved outside the pressure stop portion, one end of the elastic member abuts against the bottom surface of the piston rod, the other end of the elastic member abuts against the bottom of the quick-switching sleeve, and an airtight detection boss is further sleeved outside the quick-switching sleeve.
3. The fixed-point leak detection device according to claim 2, wherein the piston rod is provided with a vent pipe in the middle along the axial direction thereof, the side surface of the piston rod is provided with an air outlet and an air inlet, the air outlet and the air inlet are communicated with the vent pipe, and the top end of the piston rod is further provided with an adjusting and adapting hole.
4. The spot leak detection apparatus according to claim 2, wherein said resilient member is a compression spring.
5. The fixed-point leak detection device according to claim 4, wherein an O-ring is further disposed outside the piston rod, and the O-ring is disposed at a top position of the quick-change sleeve.
6. The fixed-point leak detection apparatus according to claim 1, wherein the leak detection support comprises a bottom leak detection support, a positioning platform disposed above the bottom leak detection support, and a pressing platform disposed above the positioning platform, the positioning platform and the bottom leak detection support are connected by a first support column, and the pressing platform and the positioning platform are connected by a second support column.
7. The fixed-point leak detection device according to claim 6, wherein the positioning mechanism includes a primary positioning mechanism for positioning the positioning jig on the transmission chain and a secondary positioning mechanism for adjusting and positioning the positioning jig in the vertical direction.
8. The fixed-point leak detection device according to claim 7, wherein the secondary positioning mechanism comprises a secondary positioning cylinder disposed on a lower surface of the bottom leak detection support, a telescopic shaft of the secondary positioning cylinder extends upward out of the bottom leak detection support and is connected to a connecting shaft, the other end of the connecting shaft is connected to the positioning platform, the positioning platform is provided with a plurality of positioning columns in an arrangement, and the positioning columns are located below the positioning fixture.
9. The fixed-point leak detection device according to claim 7 or 8, wherein the primary positioning mechanism includes a primary positioning cylinder, the primary positioning cylinder is disposed on the second support column, and a positioning pin of the primary positioning cylinder is disposed downward toward the positioning fixture and configured to extend downward to press the positioning fixture for positioning.
10. The fixed-point leak detection device according to claim 7, wherein the jack mechanism includes a jack cylinder, a jack extension shaft and a guide shaft, the jack cylinder is disposed on the jack platform, the jack extension shaft passes through the jack platform in a downward direction, the guide shaft is disposed in parallel with the jack extension shaft, one end of the guide shaft penetrates through the jack platform, and the other end of the guide shaft is connected with the jack extension shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921468844.3U CN210426907U (en) | 2019-09-04 | 2019-09-04 | Fixed-point leak detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921468844.3U CN210426907U (en) | 2019-09-04 | 2019-09-04 | Fixed-point leak detection device |
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| CN210426907U true CN210426907U (en) | 2020-04-28 |
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| CN201921468844.3U Active CN210426907U (en) | 2019-09-04 | 2019-09-04 | Fixed-point leak detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067206A (en) * | 2020-08-20 | 2020-12-11 | 江门龙浩智能装备有限公司 | Sealing method |
| CN113471018A (en) * | 2021-05-24 | 2021-10-01 | 深圳林硕科技有限公司 | Novel production and processing technology for high-voltage direct-current relay |
| CN113932994A (en) * | 2021-09-22 | 2022-01-14 | 上海瓴爵机电设备有限公司 | Higher engine gas tightness short-term test equipment of accuracy |
-
2019
- 2019-09-04 CN CN201921468844.3U patent/CN210426907U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067206A (en) * | 2020-08-20 | 2020-12-11 | 江门龙浩智能装备有限公司 | Sealing method |
| CN113471018A (en) * | 2021-05-24 | 2021-10-01 | 深圳林硕科技有限公司 | Novel production and processing technology for high-voltage direct-current relay |
| CN113932994A (en) * | 2021-09-22 | 2022-01-14 | 上海瓴爵机电设备有限公司 | Higher engine gas tightness short-term test equipment of accuracy |
| CN113932994B (en) * | 2021-09-22 | 2024-04-12 | 上海瓴爵机电设备有限公司 | Engine air tightness rapid detection equipment with higher accuracy |
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