CN109211484B - Surface defect detector for plastic pipe - Google Patents
Surface defect detector for plastic pipe Download PDFInfo
- Publication number
- CN109211484B CN109211484B CN201811270393.2A CN201811270393A CN109211484B CN 109211484 B CN109211484 B CN 109211484B CN 201811270393 A CN201811270393 A CN 201811270393A CN 109211484 B CN109211484 B CN 109211484B
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- clamping seat
- end clamping
- base plate
- supporting base
- rotating shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
- G01M3/083—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for tubes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a surface defect detector for plastic pipes, which comprises a supporting base plate and a plurality of tightening devices arranged on the supporting base plate, wherein a front-end clamping seat and a rear-end clamping seat are slidably arranged on the supporting base plate, an air inlet channel is arranged on the front-end clamping seat, a quick-insertion air pipe connector is arranged at one end of the air inlet channel, an air outlet channel is arranged on the rear-end clamping seat, a pressure release valve is arranged at one end of the air outlet channel, air bag lantern rings used for tightly supporting the inner wall of the plastic pipe are arranged on the sides, close to the front-end clamping seat and the rear-end clamping seat, of the front-end clamping seat and the rear-end clamping seat, the end face of one side of each air bag lantern ring is bonded on the side wall of the corresponding front-end clamping seat or the rear-end clamping seat, a. The invention can reduce human error and improve detection precision, and has the advantages of simple structure and low cost.
Description
Technical Field
The invention relates to the technical field of production and detection of plastic pipes, in particular to a surface defect detector for plastic pipes.
Background
After the plastic pipe is produced and molded, the sample piece is generally taken out for surface defect detection so as to judge whether the batch of plastic pipes is qualified or not. The traditional mode is that the manual work detects through touching or observing, and although this kind of mode is convenient and fast, there is easy tired, the error is big, the shortcoming of precision low of manual work. And the adopted precision instrument with small error and high precision not only has complex structure, but also has higher cost.
Disclosure of Invention
The invention aims to provide a surface defect detector for a plastic pipe, which can reduce human errors and improve detection precision and has the advantages of simple structure and low cost.
The purpose of the invention is realized by the following technical scheme: the surface defect detector for the plastic pipes comprises a supporting base plate and a plurality of tightening devices which are arranged on the supporting base plate and used for fixing the plastic pipes, wherein a front-end clamping seat and a rear-end clamping seat are arranged on the supporting base plate in a sliding manner, an air inlet channel is arranged on the front-end clamping seat, a quick-insertion air pipe joint is arranged at one end of the air inlet channel, an air outlet channel is arranged on the rear-end clamping seat, a pressure release valve is arranged at one end of the air outlet channel, air bag lantern rings used for tightening the inner wall of the plastic pipes are arranged on the sides, close to each other, of the front-end clamping seat and the rear-end clamping seat, one side end faces of the air bag lantern rings are bonded on the side walls of the corresponding front-end clamping seat or the rear-end clamping seat, a plurality of air inlet holes are formed in the inner hole walls of the air bag lantern rings, the tightening devices are positioned between the front-end clamping seat and the rear-, the lower tightening body is detachably arranged on the supporting bottom plate through bolts, lower U-shaped bodies are integrally formed on two transverse sides of the lower tightening body, lower rotating shafts are rotatably arranged between two end parts of the lower U-shaped bodies, a cover-shaped nut is fixed on one lower rotating shaft, a screw hole is formed in the other lower rotating shaft, a butterfly bolt is matched in the cover-shaped nut, upper U-shaped bodies are integrally formed on two transverse sides of the upper tightening body, a pressing part for pressing one upper U-shaped body is arranged on the butterfly bolt, an upper rotating shaft is rotatably arranged between two end parts of the other upper U-shaped body, a screw hole is formed in the upper rotating shaft, adjusting screws are matched in the screw holes of the upper rotating shaft and the screw holes of the lower rotating shaft, adjusting nuts are matched at two end parts of the adjusting screws, and a plastic extrusion layer matched with the shape of the wall of the plastic pipe is arranged on the inner wall of the arc, and a strain gauge pressure sensor is arranged in the plastic extrusion layer, and a propelling mechanism for propelling the front end clamping seat to slide is installed at one end of the supporting base plate close to the front end clamping seat.
Furthermore, a bearing plate is integrally formed at one end, close to the front-end clamping seat, of the supporting base plate, the propelling mechanism comprises a push rod and a plurality of sliding sleeves, the sliding sleeves are fixed on the bearing plate, and one end of the push rod penetrates through the sliding sleeves and points to the front-end clamping seat.
Furthermore, sliding grooves are formed in the side walls of the two transverse sides of the supporting base plate, sliding bodies in sliding fit with the sliding grooves are arranged on the two transverse sides of the front-end clamping seat and the rear-end clamping seat, and the sliding bodies are fixed on the supporting base plate through fastening bolts.
Furthermore, the two transverse sides of the upper surface of the supporting bottom plate are provided with uniform scale marks.
The invention has the beneficial effects that:
1. by arranging the front end clamping seat and the rear end clamping seat, two ends of a plastic pipe sample piece can be tightly supported and sealed, high-pressure gas is filled into the plastic pipe sample piece and placed in water to observe whether the sample piece has cracks or leaks, and the defect of low precision of traditional manual observation is overcome;
2. by arranging the tightening device, the plastic extrusion layer and the strain gauge pressure sensor are arranged in the tightening device, the resistance value of the strain gauge can be correspondingly changed when the sample piece passes through the plastic extrusion layer, whether the surface of the sample piece is convex or concave is judged according to the resistance value change range, and compared with the traditional manual touch or observation mode, the precision is higher, and the result is more reliable;
3. the invention has the advantages of simple structure, low cost and easy adjustment, and is suitable for a processing workshop or workshop operated at low cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial schematic structural view of the present invention;
FIG. 3 is an enlarged schematic view of FIG. 2 at A;
FIG. 4 is an enlarged view of FIG. 2 at B;
fig. 5 is a sectional view of the upper band body in the present invention.
The labels in the figure are: 1-a support floor; 2-front end card seat; 3-a rear end card seat; 4-upper clamp body; 5-lower tightening hoop body; 6-plastic extrusion layer; 7-a carrier plate; 8-a sliding sleeve; 9-a push rod; 10-a chute; 11-scale marking; 12-a slider; 13-fastening bolts; 14-quick insertion of the air pipe joint; 15-a balloon collar; 16-an air intake; 17-a pressure relief valve; 18-butterfly bolts; 19-a compacting section; 20-an arc-shaped groove; 41-upper U-shaped body; 42-upper rotating shaft; 43-adjusting screw; 51-lower U-shaped body; 52-cap type screw cap; 53-lower spindle; 61-filled plastic; 62-strain gauge.
Detailed Description
As shown in fig. 1 to 5, the surface defect detector for plastic pipes provided in this embodiment includes a supporting base plate 1 and a plurality of tightening devices installed on the supporting base plate 1 and used for fixing plastic pipes, wherein a front end clamping seat 2 and a rear end clamping seat 3 are installed on the supporting base plate 1 in a sliding manner, specifically, sliding grooves 10 are respectively provided on lateral walls of two lateral sides of the supporting base plate 1, and the two lateral sides refer to two sides of the front end clamping seat 2 or the rear end clamping seat 3 in a non-sliding direction. The horizontal both sides of front end cassette 2 and rear end cassette 3 all are provided with the gliding mass 12 with spout 10 sliding fit, and threaded hole is opened on this gliding mass 12 and is fixed on supporting baseplate 1 through fastening bolt 13, the horizontal both sides of supporting baseplate 1 upper surface are provided with even scale mark 11 for compare front end cassette 2 and rear end cassette 3's position.
Be provided with the intake duct on the front end cassette 2, fast inserting air pipe head 14 is installed to intake duct one end, is provided with the gas outlet channel on the rear end cassette 3, and relief valve 17 is installed to gas outlet channel one end, one side that front end cassette 2 and rear end cassette 3 are close to each other all is provided with the gasbag lantern ring 15 that is used for propping up the plastics tubular product inner wall, and the gasbag lantern ring 15 adopts the rubber material preparation, and its intra-annular is provided with the chamber of admitting air, and a side end face bonding of gasbag lantern ring 15 is on corresponding front end cassette 2 or rear end cassette 3's lateral wall, and opens on the interior pore wall of gasbag lantern ring 15 have a plurality ofly and admit air the inlet port 16 of chamber intercommunication, lets in high-pressure gas from fast inserting air pipe head 14, and gaseous entering is admitted air the chamber and makes the expansion of the gasbag lantern ring 15 through.
A plurality of tight hoop devices are located between the front end clamping seat 2 and the rear end clamping seat 3, the tight hoop devices comprise an upper tight hoop body 4 and a lower tight hoop body 5, arc-shaped grooves 20 matched with the pipe wall of the plastic pipe are formed in the middle of the upper tight hoop body 4 and the middle of the lower tight hoop body 5, and the lower tight hoop body 5 is detachably installed on the supporting base plate 1 through bolts. The upper hoop body 4 is hinged with one side of the lower hoop body 5, the other side of the upper hoop body is movably connected, specifically, lower U-shaped bodies 51 are integrally formed on the two transverse sides of the lower hoop body 5, a lower rotating shaft 53 is rotatably arranged between the two end parts of each lower U-shaped body 51, a cover-shaped nut 52 is fixed on one lower rotating shaft 53, a screw hole is formed on the other lower rotating shaft 53, a butterfly bolt 18 is matched in the cover-shaped nut 52, upper U-shaped bodies 41 are integrally formed on the two transverse sides of the upper hoop body 4, a pressing part 19 for pressing one upper U-shaped body 41 is arranged on the butterfly bolt 18, an upper rotating shaft 42 is rotatably arranged between the two end parts of the other upper U-shaped body 41, the upper rotating shaft 42 is provided with the same screw hole as that of the lower rotating shaft 53, an adjusting screw 43 is matched in the screw hole of the upper rotating shaft 42 and the screw hole of the lower rotating shaft 53, and adjusting nuts, by screwing the adjusting nut, the upper tightening body 4 and one side of the lower tightening body 5 can be locked, and the other side of the upper tightening body 4 and the other side of the lower tightening body 5 can be locked by screwing the butterfly bolt 18.
The inner wall of the arc-shaped groove 20 of the upper hoop body 4 is provided with a plastic extrusion layer 6 matched with the shape of the pipe wall of the plastic pipe, and the plastic extrusion layer 6 is internally provided with a strain gauge pressure sensor.
The supporting base plate comprises a supporting base plate 1, a front end clamping seat 2 and a pushing mechanism, wherein the pushing mechanism is used for pushing the front end clamping seat 2 to slide is installed at one end of the supporting base plate 1 close to the front end clamping seat 2, specifically, a bearing plate 7 is integrally formed at one end of the supporting base plate 1 close to the front end clamping seat 2, the pushing mechanism comprises a push rod 9 and a plurality of sliding sleeves 8, the sliding sleeves 8 are fixed on the bearing plate 7, and one end of the push rod 9 penetrates through the sliding sleeves 8 and points.
The working principle of the invention is as follows: when detecting cracks, selecting the number of tightening devices to be installed according to the length of a tested plastic pipe sample piece, then clamping one end of the sample piece on an air bag lantern ring 15 of a front-end clamping seat 2, sequentially penetrating the other end of the sample piece through an arc-shaped groove 20 of each lower tightening body 5 and clamping the sample piece on the air bag lantern ring 15 of a rear-end clamping seat 3, introducing high-pressure gas from a quick insertion gas pipe connector 14, expanding the air bag lantern ring 15 and tightly supporting two ends of the plastic pipe, placing the whole detector into water, observing the number of bubbles, judging whether the plastic pipe generates cracks or leaks gas according to the number and size of the bubbles, and taking out the detector after the observation is finished; when the protruding or sunken deformation is detected, the butterfly bolt 18 is screwed down, so that the plastic extrusion layers 6 are just in stable contact with the outer wall of the plastic pipe, whether stable contact is achieved or not can be judged through pressure values, the push rod 9 is pushed manually, the plastic pipe moves along the pushing direction, signals transmitted by the strain gauge pressure sensors in each plastic extrusion layer 6 are detected, whether obvious protruding or sunken deformation exists or not is judged, after the detection is finished, the pressure release valve 17 is opened, the butterfly bolt 18 is loosened, and the sample piece is taken down.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention should be covered within the scope of the present invention.
Claims (4)
1. Surface defect detector for plastics tubular product, including supporting baseplate and install a plurality of tightening device that are used for fixed plastics tubular product on the supporting baseplate, its characterized in that: the support base plate is provided with a front end clamping seat and a rear end clamping seat in a sliding manner, the front end clamping seat is provided with an air inlet channel, one end of the air inlet channel is provided with a quick insertion air pipe connector, the rear end clamping seat is provided with an air outlet channel, one end of the air outlet channel is provided with a pressure relief valve, one sides of the front end clamping seat and the rear end clamping seat which are close to each other are provided with air bag lantern rings for supporting the inner wall of a plastic pipe, the side walls of the front end clamping seat and the rear end clamping seat which are close to each other are mutually bonded with the side end surface of one side of the air bag lantern ring, the inner hole wall of each air bag lantern ring is provided with a plurality of air inlet holes, a plurality of tightening devices are positioned between the front end clamping seat and the rear end clamping seat, each tightening device comprises an upper tightening body and a lower tightening body, the middle parts of the upper tightening body and the lower tightening body are respectively provided with arc-shaped grooves matched with the pipe wall, lower rotating shafts are rotatably arranged between the two end parts of the lower U-shaped body, a cap-shaped screw cap is fixed on one lower rotating shaft, a screw hole is formed on the other lower rotating shaft, a butterfly bolt is matched in the cap-shaped screw cap, the upper U-shaped bodies are integrally formed on two transverse sides of the upper tightening ring body, the butterfly bolt is provided with a pressing part for pressing one upper U-shaped body, an upper rotating shaft is rotatably arranged between two end parts of the other upper U-shaped body, a screw hole is formed in the upper rotating shaft, an adjusting screw rod is matched in the screw hole of the upper rotating shaft and the screw hole of the lower rotating shaft, adjusting nuts are matched at two end parts of the adjusting screw rod, a plastic extrusion layer matched with the shape of the pipe wall of the plastic pipe is arranged on the inner wall of the arc-shaped groove of the upper hoop body, a strain gauge pressure sensor is arranged in the plastic extrusion layer, and a pushing mechanism for pushing the front end clamping seat to slide is arranged at one end of the supporting base plate close to the front end clamping seat.
2. A surface defect detector for plastic tubing according to claim 1, wherein: the supporting base plate is provided with a front end clamping seat, the supporting base plate is provided with a supporting plate, the supporting base plate is provided with a supporting base.
3. A surface defect detector for plastic tubing according to claim 2, wherein: the side walls of the two transverse sides of the supporting base plate are provided with sliding grooves, the two transverse sides of the front-end clamping seat and the rear-end clamping seat are provided with sliding bodies in sliding fit with the sliding grooves, and the sliding bodies are fixed on the supporting base plate through fastening bolts.
4. A surface defect detector for plastic tubing according to claim 3, wherein: and uniform scale marks are arranged on the two transverse sides of the upper surface of the supporting bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811270393.2A CN109211484B (en) | 2018-10-29 | 2018-10-29 | Surface defect detector for plastic pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811270393.2A CN109211484B (en) | 2018-10-29 | 2018-10-29 | Surface defect detector for plastic pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109211484A CN109211484A (en) | 2019-01-15 |
| CN109211484B true CN109211484B (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811270393.2A Active CN109211484B (en) | 2018-10-29 | 2018-10-29 | Surface defect detector for plastic pipe |
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| Country | Link |
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| CN (1) | CN109211484B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11506556B2 (en) * | 2020-09-30 | 2022-11-22 | Rosenmount Inc. | Single-use plastic pressure sensor |
| CN112496749B (en) * | 2020-11-24 | 2022-11-25 | 四川欧宝路管业有限责任公司 | High strength PE pipeline apparatus for producing |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1493369A (en) * | 1974-12-21 | 1977-11-30 | Underground Location Services | Gauging plates for pipeline testing tools |
| CN101865818B (en) * | 2010-05-25 | 2011-11-09 | 桂林电子科技大学 | Measurement method of friction coefficient in pipe plastic deformation |
| CN204679059U (en) * | 2015-04-23 | 2015-09-30 | 天津惠博普管道技术有限公司 | Pipe deforming steady arm |
| CN207335616U (en) * | 2017-05-11 | 2018-05-08 | 中国石油大学(华东) | A kind of buried pipeline radial deformation detector |
| CN206740326U (en) * | 2017-05-31 | 2017-12-12 | 边光弟 | A kind of plastic pipe production quality detection device |
| CN107907095B (en) * | 2017-11-10 | 2019-08-09 | 中国石油大学(北京) | Deformation inspection pipe cleaner |
| CN207881682U (en) * | 2017-12-31 | 2018-09-18 | 天津赛达鑫源检验检测有限公司 | A kind of simple type measures the device of round tube inside diameter deformation |
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2018
- 2018-10-29 CN CN201811270393.2A patent/CN109211484B/en active Active
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| CN109211484A (en) | 2019-01-15 |
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