CN106568791A - Leather shrinkage temperature testing device - Google Patents
Leather shrinkage temperature testing device Download PDFInfo
- Publication number
- CN106568791A CN106568791A CN201610986294.9A CN201610986294A CN106568791A CN 106568791 A CN106568791 A CN 106568791A CN 201610986294 A CN201610986294 A CN 201610986294A CN 106568791 A CN106568791 A CN 106568791A
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- leather
- test device
- temperature test
- lower fixed
- shrinking temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a leather shrinkage temperature testing device which comprises a detecting box. A motor is arranged in the middle of the detecting box and connected with a driving shaft, the end of the driving shaft is provided with a stirring blade, the stirring blade stretches into the bottom in an electric heating cup arranged below the detecting box, an electric heating wire is arranged at the bottom of the electric heating cup, and a temperature sensor is further inserted into the electric heating cup. The problems that due to the punching fixing mode of a leather sample, the poor sensitivity of a Hall sensor and uneven heating medium temperature, leather shrinkage temperature testing is inaccurate, and certain deviation exists are solved.
Description
Technical field
The invention belongs to leather physics parameter testing field, is related to a kind of leather shrinking temperature test fixed framing device.
Background technology
Shrinkage temperature is leather important physical parameter detecting project, specifically refer to leather sample continuous uniform heat up it is wet
The ambient temperature corresponding to the deformation moment is started to shrink in thermal environment, be in its internal structure chemical bond by the outer of damp and hot and fracture
In reaction, so belonging to inherently characteristic.By accurately detecting its shrinkage temperature, the kneading feelings of the leather are directly reflected
Condition and hot wet stability, are that chemical materialss in kneading technique and environmental condition determine that providing data supports, also to be processed further
Make leatherware or purposes selects to provide guidance.Although with science and technology development, detect shrinkage temperature method with
Device also has a many kinds, such as the GJ901 types pointer-type leather shrinkage temperature tester of most original, is widely used to today
Digital leather shrinkage temperature tester of MSW-YD4 types etc., but its operation principle is all with QB/T2706--2005 standards：
《Leather chemistry, physics, machinery and color fastness test sampling position》Based on carry out.Regardless of whether which kind of method and device adopted
According to standard, detection shrinkage temperature, first all must be requiring that the leather sample for producing 50*3mm2 is fixed, then according to inspection
Measure be heated after the contraction deformation signal that produces be supplied to immediately computer, the temperature of the medium of locking heating at once is exactly the skin
The shrinkage temperature of leather sample.So the fixation of sample and contraction deformation signal detection are particularly significant, and the fixation of sample and contraction
The sensitivity of changing sensor is accurately and timely to obtain to shrink deformation signal principal element.
Domestic market more than 70% is occupied by the extensive application of the laboratorys such as river power leather experiment room and enterprise in practice
The digital leather shrinkage temperature tester of MSW-YD4 types of share has become main product.Which has as follows in use
Problem：
1. sample acquisition and its detection process in fixed form between relation.In order to effectively solving alligator clamp is fixed
Harmful effect that method is brought to testing result and adopt sample disposal molding and form hanging hole at two ends, so as to hanging sample side
Formula fixes the new method of sample.Because must be fabricated to if according to 3mm width criterias when disposable tool sharpening makes
Dumbbell shape, but the inner corner trim edge of a knife being consequently formed cannot be processed；So our the skin sample rulers cun of disposable making after testing change
For 50*8mm, although it is simple that in terms of the fixation before sample producing and detection, operation is very easy, but does not but meet national phase
Regulation is closed, and brings difficulty so that examining report is provided to quality surveillance detection department.Although specially contrasting for this change
Test, and 11 phases in 2008 are published in entitled " different in width leather sample is affected on its shrinkage temperature "《China Leather
Leather》On magazine.But quality surveillance detection department is refused using corresponding receipts because its specimen size does not meet standard regulation
Contracting temperature monitor；In order to solve this improper present situation, with regard to must effectively solving skin sample the problem for fixing and producing presence.
2. it is heated the method for after-contraction deformation signal by the use of Hall element as displacement transducer gathering leather sample,
Its precision reliably cannot accurately directly obtain the signal that deformation 50*0.3%=0.15mm is shunk specified in standard, so
The normal data increase certain amount (is such as expanded ten times greater arriving first in MSW-YD4 types leather shrinking temperature detection instrument system
1.5mm) to ensure to obtain the contraction deformation signal of accurate stable, in then making full use of detection process again, lane database is stored in
Data set, corresponding ambient temperature apart from the 0.15mm nearest moment is found using " auditing from trail balance " further and is shrinkage temperature,
And which is stored and is shown, so as to complete the target of shrinkage temperature detection.Although this method theoretically also close by science
Reason, but system running speed is have impact on as " auditing from trail balance " program is increased in system, and also Hall element itself is sensitive
The low birth defect of degree itself also have impact on the accuracy of detection data；The displacement transducer gesture of more pinpoint accuracy is found must
OK.
3. although with electric cup by cup bottom heating wire add aqueous medium method, itself relies on free convection
To ensure the testing conditions (testing inspection prove) of the upper and lower temperature difference of skin sample less than 10C of 50mm height；But for sticky
For the bigger glycerol medium of degree, particularly temperature than it is relatively low when cannot just meet testing conditions.And cause the original of this present situation
It is this by way of the electric-heating-wire-heating medium of electric cup bottom because being because, then realize what is generally adopted by electric cup bottom
Electromagnetic agitation is highly difficult.
The content of the invention
It is an object of the invention to provide a kind of leather shrinking temperature test device, solves because leather sample needs punching
Fixed form and Hall element poor sensitivity and heating medium temperature it is uneven, and cause leather shrinking temperature to be tested
Data accuracy does not reach the technical barrier of requirement.
The purpose of the present invention is achieved through the following technical solutions：
This leather shrinking temperature test device, including detection box, are provided with motor, motor and driving in the middle part of detection box
Axle connects, and the end of drive shaft is connected with stirrer paddle, and stirrer paddle is extend into inside the electric cup arranged below detection box
Bottom, the bottom of electric cup is provided with heating wire, electric cup and is also inserted with temperature sensor；Wherein detect appearance is provided with box
Gate sensor, capacitor grid transducer are connected with one end of drive rod, are cased with back-moving spring on drive rod, the other end of drive rod with it is upper
Fixed mount connects, and lower fixed frame is provided with immediately below upper holder, is used for fixing leather examination between upper holder and lower fixed frame
Sample；Wherein upper holder and lower fixed frame extend into the inside of electric cup.
Further, the characteristics of of the invention, also resides in：
Wherein detect multiple capacitor grid transducers are provided with box.
Plurality of capacitor grid transducer is with drive shaft in approximately the same plane.
Wherein it is provided with upper holder in fixing hole, upper fixing hole and fastening bolt is inserted with by helicitic texture.
Wherein it is provided with lower fixed frame in lower fixed hole, lower fixed hole and fixing bolt is inserted with by helicitic texture.
Wherein propeller shaft sleeve is cased with bearing inside column between drive shaft and column.
Built with thermal medium, thermal medium did not had upper holder to wherein electric cup.
Wherein thermal medium is water or glycerol.
Wherein thermal insulation board is stamped on electric cup.
The invention has the beneficial effects as follows：Heating wire is for heating to the thermal medium in electric cup, while stirrer paddle
Can be stirred in electric cup bottom, make the temperature of thermal medium more uniform, positioned at the temperature sensor of skin sample intermediate altitude
The temperature of electric cup in thermal medium is obtained in real time can；50*3mm can be fixed between upper holder and lower fixed frame2Leather
Sample, contraction deformation signal and Motor drive of the highly sensitive capacitor grid transducer direct detection displacement 0.15mm apart from the moment
Paddle realizes the effective measures such as heating medium temperature concordance and method, and the shrinkage temperature accuracy for being detected is effectively improved,
The repeatability of data, concordance are more preferable, not only meet institutional research, the needs of enterprise's fabrication evaluation, and meet quality
The condition of supervisory detection department requires, is its industrialized production large-scale promotion application has technically paved road.Meanwhile,
The device of the present invention can also be applied in biomedical engineering, such as the shrinkage temperature of cardiac valve, artificial blood vessel and skin
Detection.
Further, multiple capacitor grid transducers are not only able to the multiple different types of leathers of disposable test, and keep away
Having exempted from Hall element affects problem each other, so as to effectively reducing demand space and then reducing the quantity for heating medium
And once more skin samples can be detected simultaneously under the conditions of saving heat energy, or same space；Upper holder and lower fixed frame
Leather sample is fixed by helicitic texture, it is to avoid the problem that punching fixation brings.
Further, drive shaft is rotated inside column, it is to avoid drive shaft is directly rotated in thermal medium, is drawn
The flowing of thermal medium is played, so as to affect test of the capacitor grid transducer to leather sample；Thermal insulation board is for heat Jie in Heating Cup
Matter is carried out outside heat insulation function, it is often more important that is prevented hot-fluid in electric cup from directly heating detection cassette bottom portion and is caused temperature to rise and shadow
Sound is installed on the stability of the sensor and control board of inside.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the top view of the present invention.
Wherein：1 is motor；2 are detection box；3 is signal transmssion line；4 is capacitor grid transducer；5 is back-moving spring；6 be every
Hot plate；7 is upper holder；8 is upper fixing hole；9 is leather sample；10 is electric cup；11 is lower fixed hole；12 is lower fixation
Frame；13 is heating wire；14 is stirrer paddle；15 is column；16 is drive shaft；17 is temperature sensor；18 is fixing bolt；19
For drive rod.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail：
The invention provides a kind of leather shrinking temperature test device, as shown in figure 1, including detection box 2, detecting box 2
Middle part is provided with motor 1, and motor 1 is connected with drive shaft 16, and the end of drive shaft 16 is connected with stirrer paddle 14, stirrer paddle 14
The bottom extending into inside the electric cup 10 arranged immediately below detection box 2, the wherein outside of drive shaft 16 are also cased with column 15, drive
Bearing is provided between moving axis 16 and column 15, drive shaft 16 can be rotated relative to the inwall of column 15, while driving stirring
Blade 14 is rotated；Capacitor grid transducer 4 is additionally provided with detection box 2, capacitor grid transducer 4 has multiple, and capacitor grid transducer 4 and driving
Axle 16 is in approximately the same plane, and on same straight line, the bottom of capacitor grid transducer 4 is connected with drive rod 19, drive rod 19
On be cased with back-moving spring 5, the other end of drive rod 19 is connected with upper holder 7, and fixing hole 8 is provided with upper holder 7, upper solid
Determine to be inserted with fastening bolt by bolt arrangement in hole 8；The width of upper fixing hole 8 is 4mm, and depth is 5mm；As shown in Fig. 2 upper solid
The underface for determining frame 7 is provided with lower fixed frame 12, is provided with lower fixed hole 11, is tied by screw thread in lower fixed hole 11 on lower fixed frame
Structure is inserted with fixing bolt 18, and the width of lower fixed hole 11 is 4mm, and depth is 5mm.
Wherein upper holder 7 and lower fixed frame 12 are extend into inside electric cup 10, and electric cup 10 is built with thermal medium,
Thermal medium is water or glycerol, and thermal medium did not had upper holder 12, and was stamped thermal insulation board 6 on colleague's electric cup 10, electric cup 10
Bottom is provided with heating wire 13, and temperature sensor 17 is inserted with electric cup 10, and temperature sensor 17 is inserted in electric cup 10
In thermal medium, while the top of temperature sensor 17 is connected through thermal insulation board 6 with detection box 2.
The present invention using method be：Take 50*3mm2Leather sample, by the insertion of one end of leather sample upper fixing hole 8
It is interior, then one end of leather sample will be fixed in fixing hole 8 in fastening bolt precession, then by the other end of leather sample
In insertion lower fixed hole 11, and the other end of leather sample will also be fixed in 18 precession lower fixed hole 11 of fixing bolt.
There is in fastening bolt and fixing bolt 18 cross notch, it is convenient to be revolved using instruments such as screwdrivers when temperature is higher
Tightly.After leather sample installation simultaneously, the centre-height of upper fixing hole 8 and lower fixed hole 11 is 45mm.Then will be upper solid
Determine frame 7 and lower fixed frame 12 is put in electric cup 10, and make stirrer paddle 14 extend into the lower section of lower fixed frame 12, add heat
WATER AS FLOW MEDIUM or glycerol, make thermal medium not have leather sample 9 and upper holder 7, carry out sample receipts by then covering thermal insulation board 6
Contracting temperature test.
After test starts, medium is heated in electric cup 10 and is heated up according to technical requirements continuous uniform, capacitor grid transducer 4 does not stop
Collection skin sample whether there is the signal of heat shrinkable, the temperature signal of the continual collection heating medium of temperature sensor 17 is simultaneously
And shown on a display screen and for heat medium temperature carries out closed loop control etc. in real time.Start to shrink at when leather sample and
When reaching the 0.15mm of requirement, capacitor grid transducer 4 is supplied to single-chip microcomputer the signal and locks the temperature of its heating medium, according to
Requirement is shown and is stored that this is the shrinkage temperature data of the skin sample.Once all four skin sample shrinkage temperature is gathered
Terminate, then trigger the buzzer device of " detection terminates ", now operator copy temperature data and other information, close total electricity
Source, test program are terminated.
Claims (9)
1. a kind of leather shrinking temperature test device, it is characterised in that including detection box (2), be provided with the middle part of detection box (2)
Motor (1), motor (1) are connected with drive shaft (16), and the end of drive shaft (16) is connected with stirrer paddle (14), stirrer paddle
(14) the internal bottom of the electric cup (10) arranged below detection box (2) is extend into, the bottom of electric cup (10) is provided with electric heating
Temperature sensor (17) is inserted with also in silk (13), electric cup (10)；
Capacitor grid transducer (4) is provided with detection box (2), capacitor grid transducer (4) is connected with one end of drive rod (19), is driven
Back-moving spring (5) is cased with lever (19), the other end of drive rod (19) is connected with upper holder (7), upper holder (7) just under
Side is provided with lower fixed frame (12), is used for fixing leather sample (9) between upper holder (7) and lower fixed frame (12)；Wherein go up
Fixed mount (7) and lower fixed frame (12) extend into the inside of electric cup (10).
2. leather shrinking temperature test device according to claim 1, it is characterised in that arrange on the detection box (2)
There are multiple capacitor grid transducers (4).
3. leather shrinking temperature test device according to claim 2, it is characterised in that the plurality of capacitor grid transducer
(4) with drive shaft (16) in approximately the same plane.
4. leather shrinking temperature test device according to claim 1, it is characterised in that open on fixed frame (7)
Have in upper fixing hole (8), upper fixing hole (8) and fastening bolt is inserted with by helicitic texture.
5. leather shrinking temperature test device according to claim 1, it is characterised in that open on the lower fixed frame (12)
Have in lower fixed hole (11), lower fixed hole (11) and fixing bolt (18) is inserted with by helicitic texture.
6. leather shrinking temperature test device according to claim 1, it is characterised in that the drive shaft (16) is enclosed within vertical
Post (15) is internal, is cased with bearing between drive shaft (16) and column (15).
7. leather shrinking temperature test device according to claim 1, it is characterised in that the electric cup (10) built with
Heating medium, heating medium submergence cross upper holder (7).
8. leather shrinking temperature test device according to claim 7, it is characterised in that the thermal medium is water or sweet
Oil.
9. leather shrinking temperature test device according to claim 1, it is characterised in that be stamped on the electric cup (10)
Thermal insulation board (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986294.9A CN106568791A (en) | 2016-11-09 | 2016-11-09 | Leather shrinkage temperature testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986294.9A CN106568791A (en) | 2016-11-09 | 2016-11-09 | Leather shrinkage temperature testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106568791A true CN106568791A (en) | 2017-04-19 |
Family
ID=58540719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610986294.9A Pending CN106568791A (en) | 2016-11-09 | 2016-11-09 | Leather shrinkage temperature testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106568791A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009600A (en) * | 2018-07-18 | 2018-12-18 | 田跃 | A kind of intelligent posture correction physical therapy device based on deformation sensing element |
| CN110208310A (en) * | 2019-06-14 | 2019-09-06 | 陕西科技大学 | A kind of contactless flexible material shrinkage temperature measuring method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2543035Y (en) * | 2001-10-17 | 2003-04-02 | 周勤华 | Track gauge level instrument |
| CN2651741Y (en) * | 2003-11-08 | 2004-10-27 | 陕西科技大学 | Precision leather shrinkage temperature measuring apparatus |
| CN1793875A (en) * | 2005-12-30 | 2006-06-28 | 陕西科技大学 | Leather shrinking temperature measuring instrument |
| CN103033123A (en) * | 2012-12-12 | 2013-04-10 | 北京必创科技有限公司 | Displacement measurement device |
| CN204101490U (en) * | 2014-10-14 | 2015-01-14 | 浙江中天纺检测有限公司 | A kind of leather shrinking temperature tester |
-
2016
- 2016-11-09 CN CN201610986294.9A patent/CN106568791A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2543035Y (en) * | 2001-10-17 | 2003-04-02 | 周勤华 | Track gauge level instrument |
| CN2651741Y (en) * | 2003-11-08 | 2004-10-27 | 陕西科技大学 | Precision leather shrinkage temperature measuring apparatus |
| CN1793875A (en) * | 2005-12-30 | 2006-06-28 | 陕西科技大学 | Leather shrinking temperature measuring instrument |
| CN103033123A (en) * | 2012-12-12 | 2013-04-10 | 北京必创科技有限公司 | Displacement measurement device |
| CN204101490U (en) * | 2014-10-14 | 2015-01-14 | 浙江中天纺检测有限公司 | A kind of leather shrinking temperature tester |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009600A (en) * | 2018-07-18 | 2018-12-18 | 田跃 | A kind of intelligent posture correction physical therapy device based on deformation sensing element |
| CN110208310A (en) * | 2019-06-14 | 2019-09-06 | 陕西科技大学 | A kind of contactless flexible material shrinkage temperature measuring method and device |
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Legal Events
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170419 |
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| RJ01 | Rejection of invention patent application after publication |