CN2660510Y - Low temp flexibility tester for waterproof coil stock - Google Patents
Low temp flexibility tester for waterproof coil stock Download PDFInfo
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- CN2660510Y CN2660510Y CN 200320123369 CN200320123369U CN2660510Y CN 2660510 Y CN2660510 Y CN 2660510Y CN 200320123369 CN200320123369 CN 200320123369 CN 200320123369 U CN200320123369 U CN 200320123369U CN 2660510 Y CN2660510 Y CN 2660510Y
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- 239000000463 material Substances 0.000 claims abstract description 8
- 230000001360 synchronised effect Effects 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 69
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 230000003068 static effect Effects 0.000 abstract 3
- 230000033001 locomotion Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009347 mechanical transmission Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
Two ends of a cylindrical testing rod of a waterproof coiled material low temperature flexibility tester are arranged in two straight corresponding guide grooves on two lateral plates of a frame. The top parts of two ends are connected with two ends of two wing arms of a mechanical uniform speed mechanism. Two adjustable static rods, which are arranged on two corresponding adjacent sides of the cylindrical testing rod, are axially parallel to the cylindrical testing rod. And four ends are connected with four ends of four connectors of a mechanical distance regulating mechanism. The distance between two adjustable static rods can be adjusted to be equal to the sum of the diameter of the cylindrical testing rod and the thickness of three specimens. With the mechanical uniform speed mechanism driven by a motor, the tester can drive the cylindrical testing rod to move uniformly and linearly along two straight guide grooves to the middle of the two adjustable static rods against the middle of the long side of a specimen. The cross sections on two sides of the specimen are respectively rotated in an angle of 90 degrees. And the specimen is bended to be U-shaped to achieve the test requirement. The tester has the advantages of reasonable structure, convenient portability, simple operation, precise test results and perfect consistency, which can be widely applied to the test of the waterproof coiled material low temperature flexibility.
Description
Technical field the utility model relates to a kind of waterproof material tester, particularly a kind of low temperature flexibility tester of waterproof coiled materials.
Background technology before the utility model is made, does not still have special-purpose low temperature flexibility tester of waterproof coiled materials according to the retrieval, and existing waterproof roll low-temperature tenderness method of testing is manually-operated.Waterproof roll low-temperature tenderness test equipment and equipment comprise cylinder prod, liquid bath, refrigerating fulid and the refrigerator of a metal.Appoint all qualified water-proof coiled material product of, outward appearance heavy and dimensional discrepancy and get a volume, make the rectangle test specimen of several specification unanimities by test determination, as the low-temperature tenderness test from rolling up.The thickness of waterproof roll is 2～5 millimeters.The test operation process of a test specimen is: the refrigerating fulid liquid bath and the cylinder prod that will be soaked with test specimen earlier place in the refrigerator respectively, temperature is reduced to the low temperature that regulation requires in refrigerator, and after keeping one section constant temperature time, promptly open the refrigerator door, then in the refrigerating fulid liquid bath, take out test specimen with hand, middle part, long limit with a face of test specimen is adjacent to the prod face of cylinder then, be the axle center with cylinder prod central shaft again, with cylinder prod radius is radius, the cylinder prod face of cylinder is close on one side of test specimen to rotate near 180 ° to corresponding test specimen another side, be that the test specimen xsect is bent near U-shaped, so far, the test operation process is finished.The test specimen that detects by an unaided eye is immediately had by the bending surface does not find crackle, can be to whether qualified the decisioing making of test specimen flexibility performance.Because above-mentioned process of the test is to open refrigerator behind the door, hand puts in to be operated in the refrigerator.Therefore, hand all has directly with the cylinder prod with test specimen, refrigerating fulid and contacts, in addition the uneven and speed of the manual operations size of exerting oneself fast with slowly, and in operating process lot of unstable factor such as low temperature and the rapid cold and hot exchange of extraneous room temperature in the refrigerator, so influence accuracy of experimental results and consistance, cause the test findings deviation.
The summary of the invention the purpose of this utility model is to adopt the operation of mechanically actuated instead of manual, provides a kind of and guides and supports conveniently, operates simple and easy, as to guarantee waterproof roll low-temperature tenderness test mass tester.
The utility model is realized by following technical proposals:
The utility model adopts mechanical transmission structure, and its cylinder prod two ends place in corresponding two the straight gathering sills of frame biside plate, and the top, two ends is connected with two swing arm two ends of a mechanical equal speed mechanism; Two adjustable stationary bar and the equal axially parallel of cylinder prod are positioned at and the corresponding adjacent both sides of cylinder prod, and four ends are fixedlyed connected with four web member four ends of a mechanical distance adjustor; Two swing arm two ends of above-mentioned mechanical equal speed mechanism are connected with top, cylinder prod two ends, and fixedly connected with the twisted axis two ends in two ends in addition, twisted axis and cylinder prod axially parallel, and two ends are connected by bearing with the frame biside plate; Swinging fork one end is fixedlyed connected with the twisted axis middle part, and the other end is connected with silk braid shifting block, screw axis; Screw axis one end is connected with the frame dividing plate, and an end top is connected with follower gear, driving gear, motor, and the other end is connected with framework soleplate; Motor is fixed on the frame dividing plate.Two drive lead screws of above-mentioned mechanical distance adjustor are all axially vertical with two adjustable stationary bar, are set in parallel in corresponding both sides, two adjustable stationary bar tops, and two ends are connected with the frame header board, and the top, two ends is connected with two synchronous pulleys; Two ends are connected with the frame dividing plate in addition, and the top, two ends is connected with two synchronous pulleys in addition; Two synchronous pulleys are connected with synchronous band; Four web member four ends are fixedlyed connected with two adjustable stationary bar four ends, and four ends are connected with four silk braids in addition; Four silk braids also are connected in pairs with two drive lead screws; Have at least adjustable stationary bar two ends to be connected in two adjustable stationary bar with two root pointers of two rods apart from reader.Two drive lead screws are made up of corresponding positive tooth and anti-tooth two parts screw mandrel respectively, and four silk braids are two pairs of positive and negative tooth silk braids, and a pair of positive and negative tooth silk braid is corresponding to be connected with the positive and negative tooth screw mandrel coupling of a drive lead screw.An above-mentioned rod is made up of apart from rule a root pointer and a rod apart from reader, and a rod is positioned at a drive lead screw top apart from rule, fixedlys connected with the frame side plate; One root pointer is positioned at a rod apart from the rule top, fixedlys connected with adjustable stationary bar one end.Two adjustable stationary bar respectively and between the cylinder prod range of adjustment in horizontal direction gap be 0～12 millimeter.
The utility model is owing to adopt above-mentioned technical scheme, and by the transmission of motor-driven machinery equal speed mechanism, can drive two swing arms is the axle center with the twisted axis central shaft, is radius with the long limit of swing arm, at certain rotation angle range inter-sync reciprocally swinging.Because of two swing arm two ends are and the only circumferencial direction constraint of cylinder prod two ends, and radially do not retrain, so the effect of two straight gathering sills is set be: when the synchronous reciprocally swinging of two swing arms, and drive the cylinder prod synchronously and can only make linear uniform motion along two straight gathering sills.The effect that two adjustable stationary bar are set is: two adjustable stationary bar spacings are transferred to equal cylinder prod diameter by two handwheels regulating mechanical distance adjustor to add three specimen thickness sums.When the cylinder prod head on the middle part beginning of the long limit of test specimen to two adjustable stationary bar center directions when two straight gathering sills are upwards made linear uniform motion, this moment, test specimen was to be plane, and advance gradually in the middle of two adjustable stationary bar along with the cylinder prod heads on test specimen, the test specimen both sides can be subjected to the resistance shelves of two adjustable stationary bar, and make the test specimen both sides accordingly along the bending of cylinder prod circumferential edge, each rotates near 90 ° accordingly until test specimen both sides xsect, the test specimen xsect is bent near U-shaped, and this has just reached the requirement of test regulation.Obviously, the test specimen xsect is bent near U-shaped, just two adjustable stationary bar spacings must be transferred to and equal cylinder prod diameter and add three specimen thickness sums.Therefore two adjustable stationary bar spacings are to set according to the different-thickness of test specimen, can by two handwheels to the cylinder prod respectively and the gap between two adjustable stationary bar horizontal directions regulate.Obviously, the utility model is owing to adopted above-mentioned mechanical transmission structure, and test specimen is stressed in process of the test to be that movement velocity is at the uniform velocity uniformly.In the test operation process, the bottom of tester is to be immersed in the refrigerating fulid liquid bath, test specimen and cylinder prod, two adjustable stationary bar all are immersed in the refrigerating fulid simultaneously, and the test operation process of tester is to carry out under the cryogenic thermostat state in the cabinet that the refrigerator door is closed in addition.Therefore, experimental enviroment, condition and working specification all meet the requirement of waterproof roll low-temperature tenderness test regulation.
Above-mentioned many labile factors that influences test result that the utility model has avoided manual operations to be brought.It has compact conformation rationally, guide and support conveniently, operation is simple and easy, test findings accurately and the advantage of high conformity, can be widely used in the performance test of waterproof roll low-temperature tenderness.
Description of drawings Fig. 1 is the utility model drive mechanism synoptic diagram;
Fig. 2 tests the intermediateness synoptic diagram for the utility model embodiment;
Fig. 3 is cylinder prod and the test specimen initial state synoptic diagram among Fig. 2;
Fig. 4 is cylinder prod and the test specimen final state synoptic diagram among Fig. 2.
Embodiment is further described the utility model below in conjunction with drawings and Examples: as attached illustrated in figures 1 and 2, have two straight gathering sills 3 on frame 4 biside plates of the present utility model accordingly, these two straight gathering sills 3 all are vertical direction settings, cylinder prod 1 two ends place in corresponding two vertically-guided grooves 3, twisted axis 13 two ends are to be fixed on frame 4 biside plates by a pair of sliding bearing, two swing arm 14 two ends are connected with top, post prod 1 two ends, garden, fixedly connected with top, twisted axis 13 two ends in two ends in addition, swinging fork 12 1 ends are fixedlyed connected with twisted axis 13 middle parts, the other end and silk braid shifting block 11, screw axis 10 connects; Screw axis 10 1 ends are to be fixed on frame 4 dividing plates by a sliding bearing, and an end top is connected with follower gear 9, driving gear 8 and motor 7, and the other end is to be fixed on frame 4 base plates by a sliding bearing; Motor 7 is fixed on frame 4 dividing plates.Two adjustable stationary bar 19 all with cylinder prod 1 axially parallel, be arranged on cylinder prod 1 corresponding adjacent both sides; Four ends of four web members 2 are fixedlyed connected with four ends of two adjustable stationary bar 19, and four ends are fixedlyed connected with four silk braids 5 in addition; Four silk braids 5 also are connected in pairs with two drive lead screws 6; Two drive lead screws 6 are made up of positive tooth and anti-tooth two parts screw mandrel respectively, and four silk braids 5 are two pairs of positive and negative tooth silk braids 5, and a pair of positive and negative tooth silk braid 5 partly mates with the positive and negative tooth screw mandrel of a drive lead screw 6 respectively and is connected; Two drive lead screws 6 are all axially vertical with two adjustable stationary bar 19, and are set in parallel in corresponding both sides, two adjustable stationary bar 19 tops; Two drive lead screw 6 four ends are to be separately fixed on frame 4 header boards and the dividing plate by two pairs of sliding bearings; Top, two drive lead screw 6 two ends is connected with two handwheels 20, and in addition the top, two ends is connected with two synchronous pulleys 16, two synchronous pulleys 16 be with 15 to be connected synchronously; Adopt and to be with 15 can make two handwheels 20 more laborsaving light when regulating two adjustable stationary bar 19 spacings synchronously; Be with 15 to be an endless belt synchronously; Be horizontally disposed with two rods accordingly apart from rule 18 below two root pointers, 17, two root pointers 17 being horizontally disposed with accordingly near the top, adjustable stationary bar 19 two ends of two synchronous pulley 16 1 sides; Two root pointers 17 and two rods are positioned at corresponding two drive lead screw 6 tops respectively apart from rule 18; Two rods are fixedlyed connected with frame 4 biside plates apart from rule 18.Like this, two handwheels 20 are when regulating two adjustable stationary bar 19 spacings, and two root pointers 17 refer to promptly represent two adjustable stationary bar 19 residing positions corresponding to the reading of two rods on the rule 18; Adopt above-mentioned mechanical distance adjustor, not only easy to operate with two adjustable stationary bar 19 spacings of two handwheels, 20 adjustings, and also roll adjustment is accurate.Two adjustable stationary bar 19 respectively and between the cylinder prod 1 range of adjustment in horizontal direction gap be 0～12 millimeter.For making the utility model compact conformation reasonable, motor 7 is installed in the position of driving gear 8 belows, promptly be fixed on below frame 4 dividing plates; Yet the part of motor 7 can be frozen liquid and be impregnated with; Therefore, seal box is set, can makes motor 7 avoid the infiltration of refrigerating fulid in motor 7 outsides.Cylinder prod 1 diameter is 20 millimeters, and two adjustable stationary bar 19 are cylindrical rod, and diameter is 15 millimeters.Cylinder prod 1 and two adjustable stationary bar 19 all are made of a steel, and driving gear 8 and follower gear 9 all are formed from aluminium, and motor 7 is selected three-phase synchronous motor for use, are with 15 usefulness rubber to make synchronously.In addition, a handle is set above outside frame 4 top boards, gives and guide and support tester and bring convenience.Instrument control system adopts microcomputer measuring and controlling, can control cylinder prod 1 by the test determination requirement and make the process of linear uniform motion along two straight gathering sills 3, promptly controls the initial to final position of cylinder prod 1 operation.
The principle of work of this proving installation is: when motor 7 driving driving gears 8 are just changeing, then drive follower gear 9, screw axis 10 counter-rotatings successively, driving silk braid shifting block 11 simultaneously moves upward, making swinging fork 12 is that the axle center rotates up swing with twisted axis 13 central shafts, making two swing arms 14 simultaneously is that the axle center is rotated down swing synchronously with twisted axis 13 central shafts also, and two swing arm 14 two ends drive cylinder prod 1 simultaneously and make linear uniform motion downwards along two vertically-guided grooves 3.Otherwise when motor 7 drove driving gear 8 counter-rotatings, then cylinder prod 1 was upwards made linear uniform motion along two vertically-guided grooves 3.The determining of two adjustable stationary bar 19 spacing sizes regulated by the rotation of two handwheels 20.When two handwheels 20 are just changeing, driving two drive lead screws 6 rotates, two drive lead screws 6 of cause are formed by two parts screw mandrel of positive and negative dental length equalization, two pairs of positive and negative tooth silk braids 5 are connected with positive and negative tooth screw mandrel coupling on two adjustable stationary bar 19 again, thereby, promote four silk braids 5 simultaneously respectively to the direction motion of 6 four ends of drive lead screw, then drive the direction motion outward synchronously of two adjustable stationary bar 19, promptly two adjustable stationary bar spacings widen; Otherwise, when 20 counter-rotatings of two handwheels, then drive the direction motion inward synchronously of two adjustable stationary bar 19, then spacing is dwindled, thereby reaches the purpose of regulating two adjustable stationary bar 19 spacings.Being positioned at cylinder prod 1 corresponding adjacent both sides because of two adjustable stationary bar 19, so the gap of two adjustable stationary bar 19 horizontal direction respectively and between the cylinder prod 1, is that the spacing of two adjustable stationary bar 19 widens or dwindles all and equates.
Specification length as waterproof roll test specimen 21 is 150 millimeters, and wide is 25 millimeters, and thick is 4 millimeters.Above-mentioned test specimen 21 test operation process on tester is: earlier two adjustable stationary bar 19 spacings are transferred to the diameter that equals cylinder prod 1 and the thickness sum of three test specimens 21; Because cylinder prod 1 diameter is 20 millimeters, test specimen 21 thickness are 4 millimeters, and then two adjustable stationary bar 19 spacings being transferred to is 32 millimeters; Then test specimen 21 is lain against between two parties between cylinder prod 1 and the two adjustable stationary bar 19; As shown in Figure 3, this moment, cylinder prod 1 was the position of test initial state with test specimen 21; Then the above-mentioned tester that is placed with test specimen 21 is placed in the liquid bath that fills refrigerating fulid, and make cylinder prod 1, test specimen 21 and two adjustable stationary bar 19 all be immersed in the refrigerating fulid, the refrigerating fulid liquid bath that will be placed with tester again places refrigerator together, closes the refrigerator door immediately and makes the refrigerator cooling; When the low temperature that reaches test determination in the refrigerator and constant temperature after a period of time, tester is started working, it is drive motor 7, make mechanical equal speed mechanism transmission, thereby drive cylinder prod 1 heads on test specimen 21 and upwards makes linear uniform motion to two adjustable stationary bar 19 center directions along two vertically-guided grooves 3, when the tangent surface level in the face of cylinder, top that moves to the tangent surface level of cylinder prod 1 lower cylindrical face and two adjustable stationary bar 19 is in same plane, then test specimen 21 both sides xsects respectively are rotated near 90 °, and promptly test specimen 21 xsects are bent near U-shaped; As shown in Figure 4, this moment, cylinder prod 1 was the position of final state with test specimen 21, stopped motor 7 operations immediately.So far, the test job personnel estimate test specimen 21 earlier by the glass cabinet door of refrigerator and are done tentatively to judge by the nearly U-shaped external crack situation of bending, open the refrigerator door at last, from tester, take out test specimen 21, the U-shaped outside surface that with the naked eye examines test specimen 21 has does not find crackle, can be to test specimen 21 whether qualified decisioing making.
Claims (6)
1, a kind of low temperature flexibility tester of waterproof coiled materials is characterized in that: cylinder prod (1) two ends place in frame (4) corresponding two the straight gathering sills of biside plate (3), and the top, two ends is connected with two swing arms (14) two ends of a mechanical equal speed mechanism; Two adjustable stationary bar (19) and the equal axially parallel of cylinder prod (1) are positioned at the corresponding adjacent both sides of cylinder prod (1), and four ends are fixedlyed connected with four web members (2) four ends of a mechanical distance adjustor.
2, tester according to claim 1 is characterized in that: described mechanical equal speed mechanism is made up of two swing arms (14), twisted axis (13), swinging fork (12), silk braid shifting block (11), screw axis (10), follower gear (9), driving gear (8) and motor (7); Two swing arm (14) two ends are connected with cylinder prod (1) top, two ends, and fixedly connected with twisted axis (13) two ends in two ends in addition; Twisted axis (13) and cylinder prod (1) axially parallel, two ends are connected by bearing with frame (4) biside plate; Swinging fork (12) one ends are fixedlyed connected with twisted axis (13) middle part, and the other end is connected with silk braid shifting block (11), screw axis (10); Screw axis (10) one ends are connected with frame (4) dividing plate, and an end top is connected with follower gear (9), driving gear (8), motor (7), and the other end is connected with frame (4) base plate; Motor (7) is fixed on frame (4) dividing plate.
3, tester according to claim 1 is characterized in that: described mechanical distance adjustor is made up of four web members (2), four silk braids (5), two (6) two synchronous pulleys of drive lead screw (16), synchronous band (15) and two handwheels (20); Its two drive lead screws (6) are all axially vertical with two adjustable stationary bar (19), be set in parallel in corresponding both sides, two adjustable stationary bar (19) top, two ends are connected with frame (4) header board, the top, two ends is connected with two handwheels (20), two ends are connected with frame (4) dividing plate in addition, and the top, two ends is connected with two synchronous pulleys (16) in addition; Two synchronous pulleys (16) are connected with being with (15) synchronously; Four web member (2) four ends are connected with two adjustable stationary bar (19) four ends, and four ends are connected with four silk braids (5) in addition; Four silk braids (5) also are connected with two drive lead screws (6) respectively in pairs; Have at least an adjustable stationary bar (19) two ends to be connected in two adjustable stationary bar (19) with two root pointers (17) of two rods apart from reader.
4, tester according to claim 3 is characterized in that: described two drive lead screws (6) are made up of corresponding positive tooth and anti-tooth two parts screw mandrel respectively; Described four silk braids (5) are two pairs of positive and negative tooth silk braids (5); A pair of positive and negative tooth silk braid (5) is corresponding to be connected with the positive and negative tooth screw mandrel coupling of a drive lead screw (6).
5, tester according to claim 3, it is characterized in that: described rod is made up of apart from rule (18) pointer (17) and rod apart from reader, a rod is positioned at a drive lead screw (6) top apart from rule (18), fixedlys connected with frame (4) side plate; One root pointer (17) is positioned at a rod apart from rule (18) top, fixedlys connected with adjustable stationary bar (19) one ends.
6, according to claim 1 or 3 described testers, it is characterized in that: described two adjustable stationary bar (19) respectively and between the cylinder prod (1) range of adjustment in horizontal direction gap be 0～12 millimeter;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320123369 CN2660510Y (en) | 2003-12-16 | 2003-12-16 | Low temp flexibility tester for waterproof coil stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320123369 CN2660510Y (en) | 2003-12-16 | 2003-12-16 | Low temp flexibility tester for waterproof coil stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2660510Y true CN2660510Y (en) | 2004-12-01 |
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ID=34348806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320123369 Expired - Fee Related CN2660510Y (en) | 2003-12-16 | 2003-12-16 | Low temp flexibility tester for waterproof coil stock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2660510Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135811A (en) * | 2014-08-13 | 2014-11-05 | 哈尔滨工业大学 | Multi-probe support capable of moving at three freedom degrees |
| CN104483195A (en) * | 2014-12-11 | 2015-04-01 | 广州兴森快捷电路科技有限公司 | Flexibility testing method for flexible panels |
| CN109443949A (en) * | 2018-12-20 | 2019-03-08 | 马鞍山十七冶工程科技有限责任公司 | The low temperature flexibility measuring device and its measurement method of waterproof roll under a kind of tensional state |
| CN110044724A (en) * | 2019-05-14 | 2019-07-23 | 常熟市工程质量检测中心 | A kind of waterproof roll cold flexibility test device |
-
2003
- 2003-12-16 CN CN 200320123369 patent/CN2660510Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135811A (en) * | 2014-08-13 | 2014-11-05 | 哈尔滨工业大学 | Multi-probe support capable of moving at three freedom degrees |
| CN104483195A (en) * | 2014-12-11 | 2015-04-01 | 广州兴森快捷电路科技有限公司 | Flexibility testing method for flexible panels |
| CN109443949A (en) * | 2018-12-20 | 2019-03-08 | 马鞍山十七冶工程科技有限责任公司 | The low temperature flexibility measuring device and its measurement method of waterproof roll under a kind of tensional state |
| CN110044724A (en) * | 2019-05-14 | 2019-07-23 | 常熟市工程质量检测中心 | A kind of waterproof roll cold flexibility test device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041201 Termination date: 20121216 |