CN208207234U - A kind of reverse buckling type metal detection probe - Google Patents
A kind of reverse buckling type metal detection probe Download PDFInfo
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- CN208207234U CN208207234U CN201721795550.2U CN201721795550U CN208207234U CN 208207234 U CN208207234 U CN 208207234U CN 201721795550 U CN201721795550 U CN 201721795550U CN 208207234 U CN208207234 U CN 208207234U
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Abstract
The utility model proposes a kind of reverse buckling type metal detection probe, the probe is gantry shape testing stand；Gantry shape testing stand lower passage is sense channel；Detection module is equipped in the shape testing stand of gantry；The detection module includes protecting crust, main control module, driving circuit, transmitting coil, receiving coil and receives circuit；The receiving coil is even number, and each receiving coil specification is identical and is respectively positioned on above sense channel；Each receiving coil is parallel with sense channel；The transmitting coil is located above each receiving coil and parallel with it；Each receiving coil is symmetrical arranged above sense channel using the central point of transmitting coil installation position as symmetric points；The utility model is by the improvement to probe internally provided loop construction, so that probe can easily be compatible with the conveyor equipment of infield.
Description
Technical field
The utility model relates to material tests field, especially a kind of reverse buckling type metal detection probe.
Background technique
Metal detection probe is commonly used equipment that finished product detects in factory, but existing sonde configuration there are problems such as
Under；1, anti-electromagnetic interference capability is poor, usually only one layer of shell shielding；2, sensitivity is low, because anti-electromagnetic interference capability is poor, institute
It is low (sensitivity dare not be turned up) with sensitivity；3, resistance to mechanical vibration ability is poor, because metal shell weight, volume are big, Er Qieshi
Ghost has relative motion when there is mechanical oscillation between receiving coil, generates wrong report；4, installation is inconvenient, at high cost,
The assembly line for replacing a section factory with dedicated transmission mechanism is needed to be not easy to synchronize when factory lines velocity variations.
Summary of the invention
The utility model proposes a kind of reverse buckling type metal detection probes, by the improvement to probe internally provided loop construction, make
Must pop one's head in can easily be compatible with the conveyor equipment of infield.
The utility model uses following technical scheme.
A kind of reverse buckling type metal detection probe, the probe are gantry shape testing stand；Gantry shape testing stand lower part
Channel is sense channel；Detection module is equipped in the shape testing stand of gantry；The detection module includes protecting crust, main control module, drive
Dynamic circuit, transmitting coil, receiving coil and reception circuit；The receiving coil be even number, each receiving coil specification it is identical and
It is respectively positioned on above sense channel；Each receiving coil is parallel with sense channel；The transmitting coil is located at each receiving coil
Top and parallel with it；Each receiving coil is right above sense channel using the central point of transmitting coil installation position as symmetric points
Claim setting.
The transmitting coil quantity is one, and each receiving coil is in the same plane；When metal detection pops one's head in work,
Part to be checked irreversibly delivers in the sense channel.
The protecting crust is multilayered structure, and the multilayered structure of protecting crust successively includes outer casing, buffer layer, screen from the outside to the core
Cover layer and coil layer；The outer casing is with metal material moulding；The transmitting coil, receiving coil are set at coil layer and separate
Shielded layer；The shielded layer includes electric field shielding film and/or magnetic field shielding film.
The shielded layer sprays electric field shielding film and magnetic field shielding film based on plastics inside and outside it.
The electric field shielding film is formed with metallic copper or copper-clad silver conductive paint, and the magnetic field shielding film is with high magnetic conductivity material material
Conductive paint molding.
The outer casing is equipped with coil backplate with stainless steel or plastic shaping, the coil layer, and the coil backplate is with electricity
Wood molding.
The buffer layer is formed with hard foam.
The main control module is connected with driving circuit, reception circuit；The driving circuit is connected with transmitting coil；It is described to connect
Take-up circle is connected with circuit is received；The receiving coil is made of identical first receiving coil of specification and the second receiving coil,
Dsp chip built in the main control module；Dsp chip exports square wave to driving circuit or exports sine wave signal through DDS chip；Institute
Push-pull circuit built in driving circuit is stated to amplify the signal that main control module transmits；Driving circuit has the resonant selecting frequency network side of filtering out
Higher hamonic wave in wave becomes sine wave, and the driving circuit is connected to export amplified signal with transmitting coil；It is described to connect
Take-up circle receives the signal of transmitting coil and received circuit is sent to main control module；When part metallic inclusion to be checked, pass through
The process of receiving coil can be such that the first receiving coil, the second receiving coil received signal phase and amplitude changes over time, this
Signal intensity obtains signal intensity value after phase sensitive detection and low-pass filtering treatment, when signal intensity value is greater than threshold value, master control
Module issues alarm signal.
The main control module, driving circuit and reception circuit are divided into different electromagnetic shielding containers.
The transmitting coil, receiving coil are rectangle；The receiving coil quantity is two, and the area of receiving coil is close
Patibhaga-nimitta is equal to the half of transmitting coil area；The operating voltage of the driving circuit is in 15V or more, the work of driving circuit
Electric current is equipped with conveyer belt in 6A or more, sense channel to transmit part to be checked.
In the utility model, the probe is gantry shape testing stand；Gantry shape testing stand lower passage is detection
Channel；Detection module is equipped in the shape testing stand of gantry；The detection module includes protecting crust, main control module, driving circuit, transmitting
Coil, receiving coil and reception circuit；The receiving coil is even number, and each receiving coil specification is identical and to be respectively positioned on detection logical
Above road；Each receiving coil is parallel with sense channel；The transmitting coil is located above each receiving coil and puts down therewith
Row；Each receiving coil is symmetrical arranged above sense channel using the central point of transmitting coil installation position as symmetric points；This design
So that coil need not surround sense channel, during installation, gantry shape testing stand need to be only buckled on conveyer belt, so as to
It is very easily compatible to conveyor equipment, without being reequiped to conveyor equipment.
In the utility model, due to setting buffer layer in the outer casing of stainless steel, and it is arranged in the outside of coil layer and shields
Layer, so that the electric field of the vibration initiation of metal shell, changes of magnetic field are not easy to interfere coil, to allow probe that spirit is being turned up
It is still not easy to report by mistake after sensitivity, probe is not easy to report by mistake when encountering ambient enviroment vibration such as production line board vibration.
In the utility model, coil receives circuit and uses differential design amplification and phase sensitive detection design, has very strong
Anti-interference ability, and can strengthen probe by the learning functionality of software in the dsp chip of main control module and ambient noise is known
Not, the anti-interference ability of probe is promoted, so that probe be allowed still to be not easy to report by mistake after sensitivity is turned up.
In the utility model, dsp chip built in the main control module；Dsp chip is to driving circuit output square wave or through DDS
Chip exports sine wave signal；Push-pull circuit built in the driving circuit is to amplify the sine wave signal that main control module transmits；Institute
The operating voltage of driving circuit is stated in 15V or more, the operating current of driving circuit is in 6A or more；The design uses powerful letter
Number transmitting design, and uses push-pull circuit to strengthen emissivities further to promote circuit efficiency, so as to effectively with
High-power signal inhibits ambient noise, makes probe that can cope with the quick detection of big quantity part to be checked.
In the utility model, the shielded layer includes electric field shielding film and/or magnetic field shielding film；When being set simultaneously in shielded layer
When having electric field shielding film and magnetic field shielding film, it is isolated between electric field shielding film and magnetic field shielding film with insulating film；The design
Capacity effect when can reduce screened film stacking is avoided at screened film due to electric field shielding film, the equal reliable ground of magnetic field shielding film
Stored charge or potential, and use flexible membrane for shielding, it can be reduced disturbance when screened film is shaken to electric field, help to be promoted
The anti-interference ability of detection probe, so that probe be allowed still to be not easy to report by mistake after sensitivity is turned up.
This product sets buffer layer on the outside of shielded layer, so that exterior vibration is not easy to reach shielded layer, so that the gold of shielded layer
Belong to film and be in static, disturbance will not be generated to electromagnetic field, to improve probe by stablizing the electromagnetic environment in probe
Anti-interference ability.
This product shielding construction has three layers, including electric field (copper-clad silver conductive paint), magnetic field (high magnetic conductive material conductive paint),
Electromagnetic field (steel) shielding；To have very strong anti-electromagnetic interference capability, product sensitivity can substantially be turned up without by ring
Border interference effect；And product shielding construction internal layer use screened film, due to screened film be extremely gently not easy it is affected by vibration,
Interference caused by metal shell deformation can preferably be shielded.
In this product, the transmitting coil, receiving coil are set at coil layer and far from shielded layer；The design can avoid screen
The electromagnetic wave energy that layer absorbing coil issues is covered, so that shielded layer will not interfere coil working.
When usefulness of the present invention is installation, gantry shape testing stand need to be only buckled on conveyer belt, testing stand bottom
Have multiple rows of screw hole, locked with assembly line side plate (backplate), so as to very easily compatible to conveyor equipment, without pair
Conveyor equipment is reequiped, and has multilayer screen structure, strong antijamming capability.
Detailed description of the invention
With reference to the accompanying drawings and detailed description to the further details of explanation of the utility model:
Attached drawing 1 is the schematic diagram of the utility model coil distribution；
Attached drawing 2 is the schematic diagram of the utility model；
Attached drawing 3 is the circuit theory schematic diagram of the utility model；
Attached drawing 4 is the schematic diagram of shielded layer；
Attached drawing 5 is the appearance schematic diagram of the utility model；
In figure: 1- transmitting coil；2- receiving coil；3- coil backplate；4- conveyer belt；5- part to be checked；6- protecting crust；7- is slow
Rush layer；8- shielded layer；9- coil layer；10- main control module；11- sense channel；12- is electromagnetically shielded container；13- driving circuit；
14- receives circuit；15- electric field shielding film；16- insulating film；17- magnetic field shielding film；18- outer casing.
Specific embodiment
As shown in Figs 1-4, a kind of reverse buckling type metal detection probe, the probe are gantry shape testing stand；Described gantry
Shape testing stand lower passage is sense channel 11；Detection module is equipped in the shape testing stand of gantry；The detection module includes protection
Shell 6, main control module 10, driving circuit 13, transmitting coil 1, receiving coil 2 and reception circuit 14；The receiving coil 2 is even number
A, each 2 specification of receiving coil is identical and is respectively positioned on 11 top of sense channel；Each receiving coil 2 is flat with sense channel 11
Row；The transmitting coil 1 is located above each receiving coil 2 and parallel with it；Each receiving coil is with transmitting coil installation position
Central point is symmetric points, is symmetrical arranged above sense channel.
The transmitting coil quantity is one, and each receiving coil is in the same plane；When metal detection pops one's head in work,
Part 5 to be checked irreversibly delivers in the sense channel 11.
The protecting crust 6 is multilayered structure, and the multilayered structure of protecting crust successively includes outer casing 18, buffer layer from the outside to the core
7, shielded layer 8 and coil layer 9；The outer casing 18 is with metal material moulding；The transmitting coil, receiving coil are set to coil layer
Place and separate shielded layer；The shielded layer includes electric field shielding film and/or magnetic field shielding film 17.
The shielded layer sprays electric field shielding film and magnetic field shielding film based on plastics inside and outside it.
The electric field shielding film is formed with metallic copper or copper-clad silver conductive paint, and the magnetic field shielding film is with high magnetic conductivity material material
Conductive paint molding.
For the outer casing with stainless steel or plastic shaping, the coil layer is equipped with coil backplate 3, the coil backplate 3 with
Bakelite molding.
The buffer layer is formed with hard foam.
The main control module 10 is connected with driving circuit 13, reception circuit 14；The driving circuit 13 and transmitting coil phase
Even；The receiving coil is connected with circuit is received；The receiving coil is received by identical first receiving coil of specification and second
Coil composition, dsp chip built in the main control module；Dsp chip exports square wave to driving circuit or exports through DDS chip sinusoidal
Wave signal；Push-pull circuit built in the driving circuit is to amplify the signal that main control module transmits；Driving circuit has resonant selecting frequency
Network filters out the higher hamonic wave in square wave as sine wave, and the driving circuit is connected to export amplified letter with transmitting coil
Number；The receiving coil receives the signal of transmitting coil and received circuit is sent to main control module；When part metallic inclusion to be checked
When, the first receiving coil, the second receiving coil received signal phase and amplitude can be made at any time by the process of receiving coil
Between change, this signal intensity obtains signal intensity value after phase sensitive detection and low-pass filtering treatment, when signal intensity value be greater than threshold
When value, main control module issues alarm signal.
The main control module, driving circuit and reception circuit are divided into different electromagnetic shielding containers.
The transmitting coil, receiving coil are rectangle；The receiving coil quantity is two, and the area of receiving coil is close
Patibhaga-nimitta is equal to the half of transmitting coil area；The operating voltage of the driving circuit is in 15V or more, the work of driving circuit
Electric current is equipped with conveyer belt 4 in 6A or more, sense channel 11 to transmit part 5 to be checked.
The following are the embodiments of the present invention:
When installing probe, probe back-off on conveyer belt, being locked on assembly line side plate (backplate), by live work
Condition, sets the signal alarm threshold of main control module, and circuit gain learns product effect, so that in normal conditions, probe will not
It alarms normal electromagnetic disturbance.
Pop one's head in work when, transmitting coil transmitting signal by two sides receiving coil receive, when in sense channel without to be checked
When object, since two receiving coil specifications are identical, received signal is consistent, and probe is not alarmed.
When probe carries out metal detection to object to be checked, object to be checked is sent into sense channel by conveyer belt；If in object to be checked
There are metal object, metal inside can generate vortex, generate interference to the electromagnetic field in sense channel, so that first receives line
Circle, the second receiving coil received signal phase and amplitude generate the variation in different time points, this signal intensity is examined through phase sensitivity
Signal intensity value is obtained after wave and low-pass filtering treatment, when signal intensity value is greater than threshold value, main control module issues alarm signal.
Conveyer mechanism in probe back-off area is formed with nonmetallic materials, and conveyer belt conveyor surface is also with non-metallic material
Material molding.
Claims (9)
1. a kind of reverse buckling type metal detection probe, it is characterised in that: the probe is gantry shape testing stand；Gantry shape inspection
Survey frame lower passage is sense channel；Detection module is equipped in the shape testing stand of gantry；The detection module includes protecting crust, master control
Module, driving circuit, transmitting coil, receiving coil and reception circuit；The receiving coil is even number, each receiving coil specification
It is identical and be respectively positioned on above sense channel；Each receiving coil is parallel with sense channel；The transmitting coil, which is located at, respectively to be connect
It is above take-up circle and parallel with it；Each receiving coil is using the central point of transmitting coil installation position as symmetric points, in sense channel
Top is symmetrical arranged；
The protecting crust is multilayered structure, and the multilayered structure of protecting crust successively includes outer casing, buffer layer, shielded layer from the outside to the core
And coil layer；The outer casing is with metal material moulding；The transmitting coil, receiving coil are set at coil layer and far from shielding
Layer；The shielded layer includes electric field shielding film and/or magnetic field shielding film；
When the probe is installed at assembly line conveyer belt, gantry shape testing stand is buckled at assembly line conveyer belt, and
It is locked at assembly line side plate with detecting the screw hole of frame bottom.
2. a kind of reverse buckling type metal detection probe according to claim 1, it is characterised in that: the transmitting coil quantity is
One, each receiving coil is in the same plane；The sense channel is to be checked to irreversibly deliver when metal detection pops one's head in work
The sense channel of part.
3. a kind of reverse buckling type metal detection probe according to claim 1, it is characterised in that: the shielded layer is with plastics
Main body sprays electric field shielding film and magnetic field shielding film inside and outside it.
4. a kind of reverse buckling type metal detection probe according to claim 3, it is characterised in that: the electric field shielding film is with gold
Belong to copper or the molding of copper-clad silver conductive paint, the magnetic field shielding film are formed with high magnetic conductive material conductive paint.
5. a kind of reverse buckling type metal detection probe according to claim 1, it is characterised in that: the outer casing is with stainless steel
Or plastic shaping, the coil layer are equipped with coil backplate, the coil backplate is formed with bakelite.
6. a kind of reverse buckling type metal detection probe according to claim 1, it is characterised in that: the buffer layer is steeped with hard
The molding of foam material.
7. a kind of reverse buckling type metal detection probe according to claim 1, it is characterised in that: the main control module and driving
Circuit, reception circuit are connected；The driving circuit is connected with transmitting coil；The receiving coil is connected with circuit is received；It is described
Receiving coil is made of identical first receiving coil of specification and the second receiving coil, dsp chip built in the main control module；
Dsp chip exports square wave to driving circuit or exports sine wave signal through DDS chip；Push-pull circuit built in the driving circuit with
The signal that amplification main control module transmits；There is driving circuit resonant selecting frequency network, which to filter out the higher hamonic wave in square wave, becomes sine
Wave, the driving circuit are connected to export amplified signal with transmitting coil；The receiving coil receives the letter of transmitting coil
Number and received circuit send to main control module.
8. a kind of reverse buckling type metal detection probe according to claim 1, it is characterised in that: the main control module, driving
Circuit and reception circuit are divided into different electromagnetic shielding containers.
9. a kind of reverse buckling type metal detection probe according to claim 2, it is characterised in that: the transmitting coil, reception
Coil is rectangle；The receiving coil quantity is two, and the area approximation of receiving coil is equal to the two of transmitting coil area
/ mono-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721795550.2U CN208207234U (en) | 2017-12-20 | 2017-12-20 | A kind of reverse buckling type metal detection probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721795550.2U CN208207234U (en) | 2017-12-20 | 2017-12-20 | A kind of reverse buckling type metal detection probe |
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| Publication Number | Publication Date |
|---|---|
| CN208207234U true CN208207234U (en) | 2018-12-07 |
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ID=64490310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721795550.2U Active CN208207234U (en) | 2017-12-20 | 2017-12-20 | A kind of reverse buckling type metal detection probe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797151A (en) * | 2017-12-20 | 2018-03-13 | 福建省麦雅数控科技有限公司 | A kind of reverse buckling type metal detection probe |
| DE102022208758A1 (en) | 2022-08-24 | 2024-02-29 | Institut Dr. Foerster Gmbh & Co. Kg | Metal detector and method for detecting metals in conveyed goods |
-
2017
- 2017-12-20 CN CN201721795550.2U patent/CN208207234U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797151A (en) * | 2017-12-20 | 2018-03-13 | 福建省麦雅数控科技有限公司 | A kind of reverse buckling type metal detection probe |
| DE102022208758A1 (en) | 2022-08-24 | 2024-02-29 | Institut Dr. Foerster Gmbh & Co. Kg | Metal detector and method for detecting metals in conveyed goods |
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