CN109827514A - A kind of waterproof roll measuring thickness device - Google Patents

A kind of waterproof roll measuring thickness device Download PDF

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Publication number
CN109827514A
CN109827514A CN201910281087.7A CN201910281087A CN109827514A CN 109827514 A CN109827514 A CN 109827514A CN 201910281087 A CN201910281087 A CN 201910281087A CN 109827514 A CN109827514 A CN 109827514A
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China
Prior art keywords
thickness
girder
roller
thickness measuring
waterproof roll
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CN201910281087.7A
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CN109827514B (en
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宫蕾
陈淑花
李秀平
詹世平
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Dalian University
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Dalian University
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  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The invention belongs to the production detection fields of building waterproof coil, disclose a kind of waterproof roll measuring thickness device.Including girder, thickness measuring device, advance controlling device;The girder includes upper girder and lower girder;It is equipped with thickness measuring device among it, whole device two sides and bottom are equipped with advance controlling device.The advance controlling device includes bracket, preliminary roller, back roller, lower girder;Lower girder two sides are respectively equipped with preliminary roller and back roller, and both ends are connected with bracket.The device is pressure type detection to building waterproof coil.The detection of coil thickness is completed under certain contact surface or pressure.The device has structure simple, is conducive to practical operation, can be integrated with coil production line, the characteristics of not affecting the normal production.

Description

A kind of waterproof roll measuring thickness device
Technical field
The invention belongs to the production detection fields of building waterproof coil, and the present invention relates to a kind of waterproof roll measuring thickness devices.
Background technique
Thickness automatic detecting device of the building waterproof coil in production is mainly laser thickness gauge at present.Laser thickness gauge For the volume and area for measuring object by ray.The thickness of coiled material is obtained divided by area by volume.There is detection knot in this detection " the building waterproof coil production licensing detailed rules for the implementation " that fruit does not meet State Administration for Quality Supervision and Inspection and Quarantine's announcement (are compiled Number (X) XK08-005) in testing requirements.For waterproof roll Thickness sensitivity, detailed rules and regulations require contact surface diameter 6mm, contact surface Pressure (22 ± 5) kPa, scale division value 0.01mm, time of contact 5s.Or contact surface diameter 10mm, interface pressure 0.02MPa, scale division value 0.01mm.
Summary of the invention
The purpose of the present invention is overcoming deficiency in the prior art, a kind of waterproof roll measuring thickness device is provided, building is prevented Water coiled material is pressure type detection.The detection of coil thickness is completed under certain contact surface or pressure.The device has structure simple, , can be integrated with coil production line conducive to practical operation, the characteristics of not affecting the normal production.
The technical solution adopted by the present invention to solve the technical problems is: a kind of waterproof roll measuring thickness device, including girder, Thickness measuring device, advance controlling device;The girder includes upper girder and lower girder;It is equipped with thickness measuring device, whole device two sides among it Advance controlling device is equipped with bottom.
The advance controlling device includes bracket, preliminary roller, back roller, lower girder;Lower girder two sides are respectively equipped with preliminary roller with after Roller, both ends are connected with bracket.
The preliminary roller includes upper preliminary roller and lower preliminary roller;The back roller includes upper back roller and lower back roller.
The shell of the thickness measuring device is installed on immediately below girder, and upper electromagnet branch is equipped with above thickness measuring device enclosure interior Frame powers on and is equipped with electromagnet above magnet carrier, powers on magnet carrier and be arranged right below lower bracket, lower bracket is by plate and vertical tube It constitutes;Thickness measuring needle is equipped with inside vertical tube;Its stitch bottom of the thickness measuring needle is equipped with lower disc, and middle part is shank, and top is thickness measuring Needle upper rminal disc;Thickness measuring needle upper rminal disc is fixedly arranged above permanent magnet.
The bracket includes bracket cabinet, and bracket cabinet inner top vertical direction is equipped with electric cylinder, the connection of electric cylinder mandril Axle sleeve, axle sleeve and gear disk be rigidly connected;Gear disk is connected with roller rigid of going forward;Lower preliminary roller rigidly connects with lower tooth wheel disc It connects.
Further, the upper girder is equipped with digital display.
Further, the thickness measuring device is fixed on immediately below girder, can be moved back and forth along girder;Spaced set 5, Take the average value of 5 points as the thickness value of coiled material.
The thickness measuring device is usually evenly arranged 5 sets in the width direction.Meet and takes 5 points of inspections in water-proofing coiled material execution standard The requirement of survey.
Further, the upper preliminary roller can not rotate.
Further, the preliminary roller has braking function;The back roller play the guiding role.
Further, the electromagnet magnetic direction is in vertical direction.
Further, the magnet carrier material that powers on is polycarbonate material plastics (Polycarbonate).
Further, the thickness measuring needle is formed by polycarbonate (Polycarbonate) material injection.It is big with rigidity, The features such as compressive deformation is small.
Further, the diameter of the lower disc is 10mm or 6mm.
Further, the thickness measuring needle and the permanent magnet at the top of it add up to weight to be 157g or 56.52g.
Further, the permanent magnet effect guarantees the stroke up and down of thickness measuring needle, and type selecting can be ferrite permanent-magnet, such as Y30BH etc..
Further, the electric cylinder is push rod servo electric jar.It can be IMB20-05 model servo electric jar.
Further, the electromagnet is single flow electromagnet, under forward and reverse electric current, reversing magnetic field.And its resorption electric current Greater than lower plug-flow journey.Thus after shank downlink, not magnetic field force induced influence.The larger certifiable resorption of resorption electric current in place and is not easy to take off It falls.Its type selecting can be DC electromagnet P80/38 DC12V miniature circular electromagnet.
Further, the measuring thickness device overall width can be 1.2m, 2.2m, 3.6m.For 1m wide pitch and macromolecule Polypropylene fibre coil production line, 2m and 3.5m wide macromolecule coil production line.Measuring thickness device overall width can be according to coil production line Width and set.
Further, the permanent magnet north and south extremely vertical direction.Its axis and electromagnet are on same axis;In electricity In the case that magnet changes magnetic direction, permanent magnet drives thickness measuring needle to do vertical direction movement.Complete coil thickness measurement.
Further, it is whole to constitute determining displacement for the thickness measuring needle and capacitive grating.Capacitive grating is grating displacement sensor, by capacitive grating The vertical displacement signal of thickness measuring needle is provided, and is produced to digital display screen.And send quality information system to.
It further, is coiled material immediately below thickness measuring device.Coiled material is located in lower girder.There is preliminary roller in the supplied materials direction of lower girder. When thickness measuring device carries out thickness test, up-down rollers are squeezed and are stopped operating 5 seconds.Coiled material stopping at this time conveying backward.Test is completed Afterwards, coiled material continues on.Lower girder goes to material direction to have back roller.
When thickness measuring device carries out thickness test, when electric cylinder makees release stroke, gear disk is pushed into lower limit by axle sleeve. It is engaged with the rigidly connected lower tooth wheel disc of lower preliminary roller with gear disk.It does not go forward roller rotatably and lower preliminary roller is simultaneously stopped rotation simultaneously Press.Up-down rollers are squeezed and are stopped operating 5 seconds, and making coiled material stop advancing is 5 seconds.
Electromagnet, which changes magnetic direction, becomes downlink thrust, and permanent magnet is made to drive thickness measuring needle downlink, pushes in Gravitative Loads Tight coiled material.Time of measuring is 5 seconds.The downward displacement signal of thickness measuring needle is measured via capacitive displacement transducer and passes to number and shows Display screen and quality information system.
After being measured, electromagnet changes magnetic direction, becomes attraction to permanent magnet, and permanent magnet is made to drive thickness measuring needle Uplink, then electric cylinder makees retract stroke, and gear disk is pulled to upper limit, upper and lower toothed disc separation by axle sleeve, and lower preliminary roller starts Rotation.Coiled material continues on.
Compared with the prior art, the invention has the beneficial effects that: first, compared with laser thickness measurement online instrument, Yin Benfa It is bright to have provided pressure measuring service, so measurement of the invention is more accurate.Second, with other mechanical thickness measurement online phases It can be in all promising policy " building waterproof coil production licensing detailed rules for the implementation " for thickness measuring than, technical solution of the present invention The contact surface area of device and the regulation of interface pressure, therefore measurement more meets regulation, manufactured without inserting winding double measurement.Third, Measurement point provided by the invention is five points, meets the measurement point position requirement in material standard.4th, in the contact pressure of setting Under, such as: (22 ± 5) kPa or 0.02MPa pressure.Time of measuring is 5 seconds, meets " building waterproof coil production license confirmation Apply detailed rules and regulations " it requires.Therefore the technical scheme is that a kind of more perfect measuring device.
Compared with other thickness measurement online devices, thickness measuring process of the invention has complied fully with " building waterproof coil product life Produce licensing detailed rules for the implementation " in coiled material thickness measuring need certain contact surface and contact pressure thickness measuring requirement.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is apparatus of the present invention overall structure diagram.
Fig. 2 is thickness measuring device usage state diagram of the present invention.
Fig. 3 is that device coiled material is advanced and stop control schematic diagram in embodiment 1.
Fig. 4 is apparatus of the present invention thickness measuring needle schematic diagram.
Girder on 1. in figure, 2. digital displays, 3. thickness measuring devices, 4. brackets, 5. lower preliminary rollers, preliminary roller on 6., back roller on 7., 8. lower back roller, 9. lower girders, 10. coiled materials, 301. electromagnets, 302. power on magnet carrier, 303. lower brackets, 304. capacitive gratings, 305. permanent magnets, 306. thickness measuring needles, 307. thickness measuring device shells, 401. gear disks, 402. lower tooth wheel discs, 403. axle sleeves, 404. Electric cylinder, 405. bracket cabinets, 3061. thickness measuring needle upper rminal discs, 3062. shanks, 3063. lower discs.
Specific embodiment
Below in conjunction with Figure of description, the present invention is further described, but the invention is not limited to following embodiments.
Embodiment 1
A kind of waterproof roll measuring thickness device, as shown in Figure 1, including girder, thickness measuring device 3, advance controlling device;The girder Including upper girder 1 and lower girder 9;It is equipped with thickness measuring device 3 among it, whole device two sides and bottom are equipped with advance controlling device.
The advance controlling device includes bracket 4, preliminary roller, back roller, lower girder 9;9 two sides of lower girder be respectively equipped with preliminary roller and Back roller, both ends are connected with bracket 4.
The preliminary roller includes upper preliminary roller 6 and lower preliminary roller 5;The back roller includes upper back roller 7 and lower back roller 8.
The shell of the thickness measuring device 3 is installed on immediately below girder 1, and 307 inner upper of thickness measuring device shell is equipped with upper electromagnetism Body support frame 302 powers on and is equipped with electromagnet 301 above magnet carrier 302, powers on magnet carrier 302 and be arranged right below lower bracket 303, lower bracket 303 is made of plate and vertical tube;Thickness measuring needle 306 is equipped with inside vertical tube;Its stitch bottom of the thickness measuring needle 306 is set There is lower disc 3063, middle part is shank 3062, and top is thickness measuring needle upper rminal disc 3061, and thickness measuring needle upper rminal disc 3061 is fixedly arranged above Permanent magnet 305.
The bracket 4 includes bracket cabinet 405, and 405 inner top vertical direction of bracket cabinet is equipped with electric cylinder 404, electronic 404 mandril of cylinder is connected to axle sleeve 403, and axle sleeve 403 and gear disk 401 are rigidly connected;6 rigidity of gear disk 401 and upper preliminary roller It is connected;Lower preliminary roller 5 is rigidly connected with lower tooth wheel disc 402.
A kind of measuring method of waterproof roll measuring thickness device:
As shown in Fig. 2, when coiled material is normally advanced, under the suction of electromagnet 301 and permanent magnet 305, thickness measuring device Stitch is in vacant state, and the electric cylinder 404 in Fig. 3 b is in retraction stationary state.The roller 6 that makes not go forward rotatably is in the upper limit Position.It does not go forward roller 6 rotatably and lower preliminary roller 5 is in discrete state.Coiled material is in can normal smooth travel condition.
When carrying out thickness measuring, 404 mandril of electric cylinder in Fig. 3 pushes axle sleeve 403 to move down.Axle sleeve 403 drives gear disk 401 move down, and block lower tooth wheel disc 402 and stop operating jointly.The drive of toothed disc 401 and 402 does not go forward roller 6 rotatably under Preliminary roller 5 stops.Under squeezing action, coiled material stops advancing.Such as Fig. 3 a.
Such as Fig. 2, under the action of 301 turn-on reversal electric current of electromagnet.Permanent magnet 305 drives shank to move down.Lower circle Disk 3063 contacts coiled material, starts thickness measuring, and the thickness measuring time is 5s.The vertical displacement information L of thickness measuring needle 306 is provided by capacitive grating 304, such as Fig. 4 a, by displacement information L and shank foot original height h1, such as Fig. 4 b.Obtain coil thickness h2.Its calculating formula is as follows:
Coil thickness h2=shank foot original height h1Displacement information L
After the completion of test, the current reversal of electromagnet 301.Permanent magnet 305 is sucked by electromagnet 301.Thickness measuring needle 306 moves up It is separated with coiled material.Electric cylinder 404 makees retract stroke in Fig. 3 simultaneously.Axle sleeve 403 drives gear disk 401 to move to upper limit, can not Preliminary roller 6 is separated with lower preliminary roller 5 in rotation, and coiled material starts to advance.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore, These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.

Claims (8)

1. a kind of waterproof roll measuring thickness device, characterized in that including girder, thickness measuring device (3), advance controlling device;The girder Including upper girder (1) and lower girder (9);Thickness measuring device (3) are equipped among it, whole device two sides and bottom are equipped with control dress of advancing It sets;
The advance controlling device includes bracket (4), preliminary roller, back roller, lower girder (9);Lower girder (9) two sides are respectively equipped with preliminary roller And back roller, both ends are connected with bracket (4).
2. a kind of waterproof roll measuring thickness device as described in claim 1, characterized in that the preliminary roller include upper preliminary roller (6) and Lower preliminary roller (5);The back roller includes upper back roller (7) and lower back roller (8).
3. a kind of waterproof roll measuring thickness device as claimed in claim 2, characterized in that the shell (307) of the thickness measuring device (3) It is installed below girder (1), thickness measuring device shell (307) inner upper is equipped with and powers on magnet carrier (302), powers on magnet carrier (302) top be equipped with electromagnet (301), power on magnet carrier (302) and be arranged right below lower bracket (303), lower bracket (303) by Plate and vertical tube are constituted;Thickness measuring needle (306) are equipped with inside vertical tube;Described its stitch bottom of thickness measuring needle (306) is equipped with lower disc (3063), middle part is shank (3062), and top is thickness measuring needle upper rminal disc (3061), and thickness measuring needle upper rminal disc (3061) is fixedly arranged above Permanent magnet (305).
4. a kind of waterproof roll measuring thickness device as claimed in claim 3, characterized in that the bracket (4) includes bracket cabinet (405), bracket cabinet (405) inner top vertical direction is equipped with electric cylinder (404), and electric cylinder (404) mandril is connected to axle sleeve (403), axle sleeve (403) and gear disk (401) are rigidly connected;Gear disk (401) and upper preliminary roller (6) are rigidly connected;Before lower Roller (5) and lower tooth wheel disc (402) are rigidly connected.
5. a kind of waterproof roll measuring thickness device as claimed in claim 4, characterized in that it is aobvious that the upper girder (1) is equipped with number Show device (2);The thickness measuring device (3) is fixed below girder (1), can be moved back and forth along girder, spaced set 5.
6. a kind of waterproof roll measuring thickness device as claimed in claim 5, characterized in that the upper preliminary roller (6) not can be rotated;
Electromagnet (301) magnetic direction is in vertical direction;
Magnet carrier (302) material that powers on is polycarbonate material plastics;
Thickness measuring needle (306) material is polycarbonate;
The diameter of the lower disc (3063) is 10mm or 6mm;
The thickness measuring needle (306) and the permanent magnet (305) at the top of it add up to weight to be 157g or 56.52g.
7. a kind of waterproof roll measuring thickness device as claimed in claim 6, characterized in that the permanent magnet (305) is ferrite Permanent magnetism;
The electric cylinder (404) is push rod servo electric jar;
The electromagnet (301) is single flow electromagnet.
8. a kind of waterproof roll measuring thickness device as claimed in claim 7, characterized in that the measuring thickness device overall width can be 1.2m, 2.2m, 3.6m.
CN201910281087.7A 2019-04-09 2019-04-09 Waterproofing membrane thickness measuring device Active CN109827514B (en)

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CN201910281087.7A CN109827514B (en) 2019-04-09 2019-04-09 Waterproofing membrane thickness measuring device

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114754720A (en) * 2022-06-14 2022-07-15 苏州范斯特机械科技有限公司 Method and device for automatically measuring thickness of laminated iron core on line
CN116788624A (en) * 2023-06-27 2023-09-22 湖南大禹神工防水科技有限公司 Product quality control device and method for waterproof coiled material production line

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5485082A (en) * 1990-04-11 1996-01-16 Micro-Epsilon Messtechnik Gmbh & Co. Kg Method of calibrating a thickness measuring device and device for measuring or monitoring the thickness of layers, tapes, foils, and the like
US20070234582A1 (en) * 2006-04-10 2007-10-11 Kabushiki Kaisha Toshiba Sheet thickness detection device, sheet conveying device, image forming apparatus
US20160084634A1 (en) * 2014-09-19 2016-03-24 Samsung Display Co., Ltd. Apparatus and method of testing a stick
CN205333015U (en) * 2015-11-13 2016-06-22 云南远安防水科技有限公司 Online thickness measurement system of waterproofing membrane
JP2017090151A (en) * 2015-11-06 2017-05-25 旭硝子株式会社 Thickness measurement method, thickness measurement device, and manufacturing method of glass substrate
CN206540532U (en) * 2017-01-24 2017-10-03 成都赛特防水材料有限责任公司 A kind of measuring thickness device of waterproof roll production line
CN207936919U (en) * 2018-06-05 2018-10-02 建国伟业防水科技望都有限公司 A kind of waterproof roll thickness monitor system
CN208109003U (en) * 2018-05-18 2018-11-16 肖楠 A kind of thickness measurement device of plate

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5485082A (en) * 1990-04-11 1996-01-16 Micro-Epsilon Messtechnik Gmbh & Co. Kg Method of calibrating a thickness measuring device and device for measuring or monitoring the thickness of layers, tapes, foils, and the like
US20070234582A1 (en) * 2006-04-10 2007-10-11 Kabushiki Kaisha Toshiba Sheet thickness detection device, sheet conveying device, image forming apparatus
US20160084634A1 (en) * 2014-09-19 2016-03-24 Samsung Display Co., Ltd. Apparatus and method of testing a stick
JP2017090151A (en) * 2015-11-06 2017-05-25 旭硝子株式会社 Thickness measurement method, thickness measurement device, and manufacturing method of glass substrate
CN205333015U (en) * 2015-11-13 2016-06-22 云南远安防水科技有限公司 Online thickness measurement system of waterproofing membrane
CN206540532U (en) * 2017-01-24 2017-10-03 成都赛特防水材料有限责任公司 A kind of measuring thickness device of waterproof roll production line
CN208109003U (en) * 2018-05-18 2018-11-16 肖楠 A kind of thickness measurement device of plate
CN207936919U (en) * 2018-06-05 2018-10-02 建国伟业防水科技望都有限公司 A kind of waterproof roll thickness monitor system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
T.HAYAT 等: "Flow of nanofluid due to convectively heated Riga plate with variable thickness", 《ELSEVIER》 *
张敏: "防水卷材在线测厚***的设计", 《河南机电高等专科学校学报》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114754720A (en) * 2022-06-14 2022-07-15 苏州范斯特机械科技有限公司 Method and device for automatically measuring thickness of laminated iron core on line
CN116788624A (en) * 2023-06-27 2023-09-22 湖南大禹神工防水科技有限公司 Product quality control device and method for waterproof coiled material production line
CN116788624B (en) * 2023-06-27 2024-03-29 湖南大禹神工防水科技有限公司 Product quality control device and method for waterproof coiled material production line

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Application publication date: 20190531

Assignee: DALIAN HUAYANG NEW MATERIALS TECHNOLOGY Co.,Ltd.

Assignor: DALIAN University

Contract record no.: X2023210000255

Denomination of invention: A waterproof membrane thickness measuring device

Granted publication date: 20210420

License type: Common License

Record date: 20231129