CN106353081A - Spring testing system and method - Google Patents
Spring testing system and method Download PDFInfo
- Publication number
- CN106353081A CN106353081A CN201610787939.6A CN201610787939A CN106353081A CN 106353081 A CN106353081 A CN 106353081A CN 201610787939 A CN201610787939 A CN 201610787939A CN 106353081 A CN106353081 A CN 106353081A
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- China
- Prior art keywords
- spring
- test
- control device
- recognize
- tested
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/30—Details; Auxiliary devices
- B65G17/46—Means for holding or retaining the loads in fixed position on the load-carriers, e.g. magnetic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G41/00—Supporting frames or bases for conveyors as a whole, e.g. transportable conveyor frames
- B65G41/001—Supporting frames or bases for conveyors as a whole, e.g. transportable conveyor frames with the conveyor adjustably mounted on the supporting frame or base
- B65G41/003—Supporting frames or bases for conveyors as a whole, e.g. transportable conveyor frames with the conveyor adjustably mounted on the supporting frame or base mounted for linear movement only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2207/00—Indexing codes relating to constructional details, configuration and additional features of a handling device, e.g. Conveyors
- B65G2207/08—Adjustable and/or adaptable to the article size
Abstract
The invention relates to a spring testing system and method and belongs to the technical field of spring testing. The system comprises a conveying device, wherein end positioning devices, direction recognizing devices, testing devices, a color code printing device and an outlet control device are sequentially arranged on the conveying device in the conveying direction, the conveying device, the end positioning devices, the direction recognizing devices, the testing devices, the color code printing device and the outlet control device are all electrically connected with the control device. The system and the method have the advantages that continuous automation of spring production and testing can be realized, the positioning and direction recognizing are accurate, the test result is accurate, and springs can be automatically sorted and marked according to the testing result.
Description
Technical field
The present invention relates to a kind of spring test system and method, belong to spring technical field of measurement and test, be particularly suited for bullet
Spring carries out Road test.
Background technology
Spring is a kind of mechanically and electrically widely used flexible member in sub-industry, and spring can produce larger in stand under load
Elastic deformation, is converted into deformation energy mechanical work or kinetic energy, and after unloading, the deformation of spring disappears and restores, by deformation energy
It is converted into mechanical work or kinetic energy.Because spring is chronically in the working environment that load is continually changing, therefore, manufacturing firm needs
Spring is carried out with strict test of dispatching from the factory.At present, in spring manufacturing firm, the production equipment of spring and test equipment are typically
Independent separate, that is, when performance test is carried out to spring, can only rely on and manually spring is transported to test from production equipment and set
Standby upper, the problem existing has: one, manually between production equipment and test equipment, spring is carried back and forth, low production efficiency and
Manual operation load is big；2nd, in addition it is also necessary to be positioned again to spring after manually spring being placed in test equipment, increasing
While working time, it is also easy to occur the inaccurate test result that cause inaccurate problem is positioned manually；3rd, spring is surveyed
After the completion of examination, operator will be separated for qualified or underproof spring according to test result, relies on and is manually classified
Management, inefficiency and the problem easily occurring placing error.
Content of the invention
For solving above technical deficiency, the invention provides a kind of spring test system and method, it is capable of bullet
Spring produces the continuous and automatic with test, and positioning is recognized to accurate it can be ensured that test result is accurate, and can be according to test result
Spring is carried out automatic key words sorting.
Technical scheme is as follows: a kind of spring test system, and including conveyer device, described conveyer device is along conveying
Direction is sequentially provided with end gauge, recognizes to device, test device, beats color control patch device and exit port control device, described conveying
Device, end gauge, recognize to device, test device, beat color control patch device and exit port control device is all electrically connected with control device
Connect.
Technical scheme also includes: described conveyer device includes conveyer and conveying frame, described conveying frame
Lower section be provided with lowering or hoisting gear, the outfan of described conveyer is connected with chain, and it is fixed that described chain is provided with spring
To frock, described conveyer is electrically connected with control device.
Technical scheme also includes: described spring orientation frock is arranged in pairs, and described conveyer is that step-by-step movement is defeated
Send machine.
Technical scheme also includes: described recognize to device be located at conveyer device side, on conveyer device with recognize
It is provided with axial distance adjusting means to the opposite side of device correspondence position.
Technical scheme also includes: described recognize include recognizing to motor to device, the described input recognized to motor
Be connected with and recognize to power set, described recognize to be connected with to the outfan of motor recognize to actuating rod, described axial distance adjusting means
Including adjusting motor, the outfan of described regulation motor is connected with axial distance adjustment effect bar, described recognize to motor, adjusts electricity
Machine is electrically connected with control device to power set with recognizing.
Technical scheme also includes: is provided with bottom with recognizing to the lower section of device correspondence position on described conveyer device
Tuo Fu mechanism, conveyer device is provided with top by helping device with recognizing to the top of device correspondence position, and described top is by helping device
Tuo Fu mechanism is electrically connected with control device with bottom.
Technical scheme also includes: described test device is located at the side of conveyer device, with survey on conveyer device
The opposite side that correspondence position is put in trial assembly is provided with testing auxiliary device, and described test device includes testing loading motor, described test
The outfan of loading motor is connected with test actuating rod, and described testing auxiliary device includes passively loading cylinder, described passive plus
The outfan of carrier gas cylinder is connected with test assosting effect bar, described passive loading cylinder and test loading motor and control device electricity
Connect.
Technical scheme also includes: described exit port control device includes one group of outlet, and described exit position is provided with
Outlet striking gear and error correction device.
Technical scheme also includes: is located on described conveyer device and beats between color control patch device and exit port control device
It is provided with marking device and drying unit.
A kind of spring method of testing, mainly comprises the steps that
Step one, spring to be tested is placed into after conveyer device, presses start button, and spring to be tested is with chain forward
Mobile；
Step 2, when spring to be tested moves to end gauge position, control device controls positioning cylinder action, determines
Behind the axial end position of spring to be tested, spring to be tested continues to move along；
Step 3, when spring to be tested mobile to recognize to setting position when, control device controls to be recognized to motor and adjusts motor
Make, after position rotating spring to be tested to test request position, spring to be tested continues to move along；
Step 4, when spring movement to be tested is to test device position, control device controls test loading motor and passively adds
Carrier gas cylinder action, tests to spring loading to be tested, described test pattern includes three kinds,
Described test pattern one assesses the load of measurement height hc position for direct measurement；
Described test pattern two is first to suppress, specified, the time that the holding of height hs position is specified, and is then offloaded to setting height p,
Then measure the load of assessment measurement height hc position again；
Described test pattern three is first in setting height hm position measurement load value, suppresses height hs according to the assessment of described load value
Position, then suppressing height hs position time of specifying of holding, be offloaded to setting height p afterwards, finally measurement assessment is being surveyed
The load of amount height hc position；
Wherein, in described test pattern two and test pattern three, the position height of hc > p position height；
Step 5, when the spring after the completion of test extremely beats color control patch device position with chain is mobile, control device is according to test
The different colors controlling marking machine different to spring labelling of result；
Step 6, the spring after the completion of labelling with chain movement to exit port control device position when, control device is according to mark
The different of note color control cylinder to transfer to spring from different exit positions.
The invention has the beneficial effects as follows: by design spring Auto-Test System, using conveyer device by test system with
The production equipment of spring connects, and is capable of the continuous and automatic that spring produces and tests, by the multiple stage under traditional mode of production mode
Cluster tool is under a work tempo, it is to avoid a dead lift workload that production is caused with test equipment independent separate is big,
Ineffective problem, can reduce the usage quantity of operator, and then can reduce production cost；And, along conveyer device
Set gradually end gauge, recognize to device, test device, beat color control patch device and exit port control device, and filled using controlling
Put and automatically controlled, spring can be accurately positioned and recognize to it is ensured that effectively the carrying out of test, simultaneously additionally it is possible to according to test
Result is marked to different springs, and spring is classified automatically dial-out according to labelling result, have test result accurately,
The advantage of high working efficiency.
Brief description
Fig. 1 is the schematic top plan view of the present invention.
Fig. 2 is the schematic front view of the present invention.
Fig. 3 is the exit port control device schematic diagram of the present invention.
Fig. 4 is the exit port control device schematic diagram of the present invention.
Fig. 5 is the control schematic diagram of the present invention.
Fig. 6 is the schematic diagram of test pattern one of the present invention.
Fig. 7 is the schematic diagram of test pattern two of the present invention.
Fig. 8 is the schematic diagram of test pattern three of the present invention.
In figure: 1, conveyer device, 2, end gauge, 3, chain, 4, axial distance adjusting means, 41, axially
Apart from adjustment effect bar, 5, recognize to device, 51, recognize to actuating rod, 52, recognize to power set, 6, bottom Tuo Fu mechanism, 7, test
Device, 71, test actuating rod, 8, testing auxiliary device, 81, test assosting effect bar, 9, lowering or hoisting gear, 10, beat color control patch device,
11st, marking device, 12, exit port control device, 13, top by helping device, 14, outlet striking gear, 15, error correction device.
Specific embodiment
Below in conjunction with accompanying drawing, by embodiment, the invention will be further described.
A kind of spring test system of the present invention and method, can automatically carry out to spring conveying, recognize to, test, beat color
Mark, marking (optional), drying (optional), the automation production flow line of classification outlet, can be to the finger being placed on chain
Positioning is put and is automatically carried out Road test with the spring in direction, and according to Road test result, spring can be fallen into 5 types (-- ,-, 0,
+, ++) be identified.
As shown in Figures 1 to 8, a kind of spring test system of the present invention includes conveyer device 1 and control device, conveying dress
Put 1 be sequentially provided with the end gauge 2 being controlled from control device along conveying direction, recognize to device 5, test device 7, play colour code
Device 10, marking device 11, drying unit and exit port control device 12.
The conveyer device 1 of the present invention includes conveyer and conveying frame, is provided with lowering or hoisting gear 9 in the lower section of conveying frame,
Can be adjusted according to the spring of different-diameter, different size, applied widely.Conveyer is by control device control action
Step-transit conveyor, the outfan of conveyer is connected with chain 3, and chain 3 is provided with spring orientation frock, spring
Orientation frock is arranged in pairs.Specifically, conveyer is the dedicated transport machine with v shape adnexa, and the up-down adjustment amount of conveyer is
90mm, it is 304.8mm that spring sets step pitch.
Recognize the side being located at conveyer device 1 to device 5, conveyer device 1 is set with the opposite side recognized to device 5 correspondence position
There is axial distance adjusting means 4.Design to recognize and be advantageous in that to device, ensure that end and the instrument angle automatching of spring,
Prepare for spring test.Specifically, recognize and include recognizing to motor from control device control action to device 5, recognize to motor
Input is connected with to be recognized to power set 52, for example, can be cylinder, hydraulic cylinder or motor, recognizes and connects to the outfan of motor
Have and recognize to actuating rod 51, for position rotating is carried out to spring.Axial distance adjusting means 4 is included by control device control action
Regulation motor, adjust motor outfan be connected with axial distance adjustment effect bar 41, for auxiliary positioning is carried out to spring
Rotation.Conveyer device 1 is provided with bottom Tuo Fu mechanism 6 to the lower section of device 5 correspondence position with recognizing, on conveyer device with recognize to
The top of device correspondence position is provided with top by helping device 13, and top is by helping device 13 and bottom Tuo Fu mechanism 6 by control device
Control action, to improve the position rotating degree of accuracy of spring, is easy to improve follow-up test result degree of accuracy.
Test device 7 is located at the side of conveyer device 1, and conveyer device 1 is set with the opposite side of test device correspondence position
There is testing auxiliary device 8.Specifically, test device 7 includes by the test loading motor of control device control action, and test loads
The outfan of motor is connected with test actuating rod 71, for carrying out load of key to spring.Testing auxiliary device 8 includes by controlling
The passive loading cylinder of device control action, the passive outfan loading cylinder is connected with test assosting effect bar 81, for auxiliary
Help and load of key is carried out to spring.
Test device 7 is tested to spring loading, is divided into 5 kinds to be identified on spring according to test result.Specifically
Test parameter includes: suppresses ability: 30,000 Ns；Measuring head stroke: 45～745mm；Stopping accuracy: ± 0.02mm(repeats to brake
Precision)；Cutting load testing: 20000n；Load measurement precision: when cutting load testing is for thousand Ns of 2-20, certainty of measurement be ± 0.5%,
When cutting load testing is for thousand Ns of 0-2, certainty of measurement be 10n；Loading servomotor: 11 kilowatts × 2；Load classification: 5 classes
(-- ,-, 0 ,+, ++)；Mode determination: 3 kinds.
Test pattern one, as shown in fig. 6, measuring a load at assessment measurement height hc, then unloads.
Test pattern two is suppressed and is suppressed at height hs as shown in fig. 7, specifying first, then hs at holding specify when
Between, it is offloaded to afterwards and is arbitrarily designated height p, thereafter in assessment measurement height hc place's measurement load, and according to measurement result by bullet
Spring is classified, and finally unloads.Wherein, measurement height hc is more than p.
Test pattern three as shown in figure 8, first, measures a load at any setting height hm, is classified to 10
One of rank；Then, suppressed at specified altitude assignment hs according to assessment result；Afterwards, at hs keep specify when
Between；Thereafter, it is offloaded to any setting height p；Then, measure a load at assessment height hc, carried out according to measurement result
Classification, wherein measurement height hc is more than p；Finally unload.
To the spring completing test, its load value just has qualified underproof attribute, and system can remember spring automatically
Attribute, is transported to after beating colour code station, correspondence prints the different markings.Specifically, beat color control patch device 10 and include marking machine (machine
Device people 2), the ink transfer method using silicone rubber pad is marked, and marker color can provide 5 kinds, and labelling point may be designed as 5
Point, labelling spacing is 15～40mm, and height, axial direction and spring coil lead angle that control device can automatically control labelling are adjusted.
Alternatively, marking device 11 can be arranged on test system, specifically, electronics coding can be adopted
Instrument, coding instrument is arranged on energy adjust automatically x, y on the framework of distance.The ink-jet phase one of the traveling device of coding instrument and ink jet printer
Cause, during guaranteeing to change different types of spring, adjust automatically can spray word angle, manually adjust the distance of shower nozzle and spring.With
Sample, drying unit can be set in test system, after being disposed at marking device, that is, after the completion of mark, below one
Individual region is exactly to dry, and places stoving rack on the top of spring, and stoving rack is installed hot hair dryer.
Exit port control device 12 includes one group of outlet, and exit position is provided with outlet striking gear 14 and error correction device 15.Tool
Body ground, outlet has five stations, after the spring after test is transported to outlet station, the load attribute of spring (qualified, do not conform to
Lattice, section etc.) remembered, according to corresponding outlet, control device controls corresponding cylinder action, releases transmission and takes to and specifies
Splicing case, outlet is respectively (ng-, ok-, ok, ok+, ng++)
Present invention also offers a kind of spring method of testing, mainly comprise the steps that
Step one, spring to be tested is placed into after conveyer device 1, presses start button, spring to be tested with chain 3 to
Front movement；
Step 2, when spring to be tested moves to end gauge 2 position, control device controls positioning cylinder action, really
Behind the axial end position of fixed spring to be tested, spring to be tested continues to move along；
Step 3, when spring to be tested mobile to recognize to device 5 position when, control device controls to be recognized to motor and adjusts motor
Make, after position rotating spring to be tested to test request position, spring to be tested continues to move along；
Step 4, when spring movement to be tested is to test device 7 position, control device controls test loading motor and passively adds
Carrier gas cylinder action, tests to spring loading to be tested；
Step 5, when the spring after the completion of test extremely beats color control patch device 10 position with chain is mobile, control device is according to survey
The different colors controlling marking machine different to spring labelling of test result；
Step 6, the spring after the completion of labelling with chain movement to exit port control device position 12 when, control device according to
The different of marker color control cylinder to transfer to spring from different exit positions.
Present invention spring applicatory is as shown in the table:
The above, be only presently preferred embodiments of the present invention, and not the present invention is done with any pro forma restriction, all in the present invention
Spirit and principle within made any modification, equivalent and improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of spring test system it is characterised in that: include conveyer device (1), described conveyer device (1) along conveying direction according to
Secondary it is provided with end gauge (2), recognizes to device (5), test device (7), beat color control patch device (10) and exit port control device
(12), described conveyer device (1), end gauge (2), recognize to device (5), test device (7), beat color control patch device (10) and
Exit port control device (12) is all electrically connected with control device.
2. as claimed in claim 1 a kind of spring test system it is characterised in that: described conveyer device (1) includes conveyer
With conveying frame, the lower section of described conveying frame is provided with lowering or hoisting gear (9), and the outfan of described conveyer is connected with chain
(3), described chain (3) is provided with spring orientation frock, and described conveyer is electrically connected with control device.
3. as claimed in claim 2 a kind of spring test system it is characterised in that: described spring orientation frock is arranged in pairs,
Described conveyer is step-transit conveyor.
4. as claimed in claim 1 a kind of spring test system it is characterised in that: described recognize to device (5) be located at conveying dress
Put the side of (1), conveyer device (1) is upper to be provided with axial distance adjusting means with recognizing to the opposite side of device (5) correspondence position
(4).
5. as claimed in claim 4 a kind of spring test system it is characterised in that: described recognize to device (5) include recognize to electricity
Machine, described recognize to be connected with to the input of motor recognize to power set (52), described recognize be connected with to the outfan of motor recognize to
Actuating rod (51), described axial distance adjusting means (4) includes adjusting motor, and the outfan of described regulation motor is connected with axial direction
Apart from adjustment effect bar (41), described recognize to motor, adjust motor and recognizing and electrically connect with control device to power set.
6. as claimed in claim 4 a kind of spring test system it is characterised in that: described conveyer device (1) upper with recognize to dress
The lower section putting (5) correspondence position is provided with bottom Tuo Fu mechanism (6), conveyer device (1) upper with recognize upper to device (5) correspondence position
Side is provided with top by helping device (13), and described top is electrically connected with control device by helping device (13) and bottom Tuo Fu mechanism (6).
7. as claimed in claim 1 a kind of spring test system it is characterised in that: described test device (7) be located at conveying dress
Put the side of (1), conveyer device (1) is gone up and the opposite side of test device (7) correspondence position is provided with testing auxiliary device (8), institute
State test device (7) and include test loading motor, the outfan of described test loading motor is connected with test actuating rod (71), institute
State testing auxiliary device (8) and include passive loading cylinder, the described passive outfan loading cylinder is connected with test assosting effect
Bar (81), described passive loading cylinder and test loading motor are electrically connected with control device.
8. as claimed in claim 1 a kind of spring test system it is characterised in that: described exit port control device (12) includes one
Group outlet, described exit position is provided with outlet striking gear (14) and error correction device (15).
9. described a kind of spring test system as arbitrary in claim 1 to 8 it is characterised in that: described conveyer device (1) is upper
It is provided with marking device (11) and drying unit in beating between color control patch device (10) and exit port control device (12).
10. a kind of spring method of testing, mainly comprises the steps that
Step one, spring to be tested is placed into after conveyer device (1), presses start button, spring to be tested is with chain
(3) move forward；
Step 2, when spring to be tested moves to end gauge (2) position, control device controls positioning cylinder action,
After determining the axial end position of spring to be tested, spring to be tested continues to move along；
Step 3, when spring to be tested mobile to recognize to device (5) position when, control device controls to be recognized to motor and adjusts motor
Action, after position rotating spring to be tested to test request position, spring to be tested continues to move along；
Step 4, when spring movement to be tested is to test device (7) position, control device controls test loading motor and passive
Load cylinder action, spring loading to be tested tested, described test pattern includes three kinds,
Described test pattern one assesses the load of measurement height hc position for direct measurement；
Described test pattern two is first to suppress, specified, the time that the holding of height hs position is specified, and is then offloaded to setting height p,
Then measure the load of assessment measurement height hc position again；
Described test pattern three is first in setting height hm position measurement load value, suppresses height hs according to the assessment of described load value
Position, then suppressing height hs position time of specifying of holding, be offloaded to setting height p afterwards, finally measurement assessment is being surveyed
The load of amount height hc position；
Wherein, in described test pattern two and test pattern three, the position height of hc > p position height；
Step 5, when the spring after the completion of test extremely beats color control patch device (10) position with chain (3) is mobile, control device root
The different colors controlling marking machine different to spring labelling according to test result；
Step 6, when the spring after the completion of labelling moves to exit port control device (12) position with chain (3), control device
Different according to marker color control cylinder to transfer to spring from different exit positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610787939.6A CN106353081B (en) | 2016-08-31 | 2016-08-31 | A kind of spring test system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610787939.6A CN106353081B (en) | 2016-08-31 | 2016-08-31 | A kind of spring test system and method |
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| Publication Number | Publication Date |
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| CN106353081A true CN106353081A (en) | 2017-01-25 |
| CN106353081B CN106353081B (en) | 2018-11-06 |
Family
ID=57856283
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610787939.6A Active CN106353081B (en) | 2016-08-31 | 2016-08-31 | A kind of spring test system and method |
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| Country | Link |
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| CN (1) | CN106353081B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108435588A (en) * | 2018-04-12 | 2018-08-24 | 肇庆本田金属有限公司 | A kind of piston is weighed color method and dedicated unit automatically |
| CN110530635A (en) * | 2019-08-21 | 2019-12-03 | 长春工程学院 | A kind of different colours spring detection device and detection method |
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| CN2152614Y (en) * | 1992-12-31 | 1994-01-12 | 杭州机床电器厂 | Automatic sorting machine with spring |
| JPH091085A (en) * | 1995-06-19 | 1997-01-07 | Shinko Electric Co Ltd | Sorting and supplying apparatus for coil spring |
| CN201091866Y (en) * | 2007-07-26 | 2008-07-30 | 重庆侨龙机械制造有限公司 | Spring load grader |
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| CN110530635A (en) * | 2019-08-21 | 2019-12-03 | 长春工程学院 | A kind of different colours spring detection device and detection method |
| CN110530635B (en) * | 2019-08-21 | 2021-06-15 | 长春工程学院 | Detection device and detection method for springs with different colors |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106353081B (en) | 2018-11-06 |
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