CN208207235U - A kind of metal detection conveyer belt of high sensitivity - Google Patents
A kind of metal detection conveyer belt of high sensitivity Download PDFInfo
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- CN208207235U CN208207235U CN201721795548.5U CN201721795548U CN208207235U CN 208207235 U CN208207235 U CN 208207235U CN 201721795548 U CN201721795548 U CN 201721795548U CN 208207235 U CN208207235 U CN 208207235U
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- coil
- receiving coil
- metal detection
- conveyer belt
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Abstract
The utility model proposes a kind of metal detection conveyer belt of high sensitivity, one section of the conveyer belt transmission path is metal detection area；The conveyer structure in the metal detection area is small to electromagnetic disturbance or undisturbed structure；The metal detection area is set in the lower passage of gantry shape testing stand；The channel 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 two, and two receiving coil specifications are identical and are respectively positioned on above sense channel；Two receiving coils are parallel with sense channel；The transmitting coil is located above two receiving coils and parallel with it；Two receiving coils are symmetrical arranged above sense channel using the central point of transmitting coil installation position as symmetric points；The utility model can be made the metal detection at conveyer belt pop one's head in and be easily installed and safeguarded by the improvement to probe internally provided loop construction.
Description
Technical field
The utility model relates to material tests field, especially a kind of metal detection conveyer belt of high sensitivity.
Background technique
Metal detection probe is the commonly used equipment that finished product detects in factory, but when the installation of existing probe, works as assembly line
When support plate under belt is metal, meeting Interference Detection needs to design a kind of nonmetallic conveyer belt, to realize highly sensitive inspection
It surveys.
Summary of the invention
The utility model proposes a kind of metal detection conveyer belt of high sensitivity, by the improvement to belt gear,
The metal detection at conveyer belt can be made to pop one's head in be easily installed and safeguard.
The utility model uses following technical scheme.
A kind of metal detection conveyer belt of high sensitivity, one section of the conveyer belt transmission path are metal detection area；Institute
The conveyer structure for stating metal detection area is small to electromagnetic disturbance or undisturbed structure；The metal detection area is set to a dragon
In the lower passage of door shape testing stand；The channel is sense channel；Detection module is equipped in the shape testing stand of gantry；The detection mould
Block includes protecting crust, main control module, driving circuit, transmitting coil, receiving coil and receives circuit；The receiving coil is even number
A, each receiving coil specification is identical and is respectively positioned on above sense channel；Each receiving coil is parallel with sense channel；It is described
Transmitting coil is located above each receiving coil and parallel with it；Each receiving coil is pair with the central point of transmitting coil installation position
Claim point, 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 to be checked conveys in the sense channel；The conveyer structure in the metal detection area is formed with nonmetallic materials, or inspection
Area's conveyer structure is surveyed at work without the metalwork of progress displacement movement.
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；It is described
Shielded layer includes electric field shielding film or magnetic field shielding film.
The electric field shielding film is formed with metallic copper or copper-clad silver conductive paint.
The magnetic field shielding film is formed with high magnetic conductivity material material conductive paint.
The outer casing is formed with stainless steel, and the coil layer is equipped with coil backplate, and the coil backplate is formed with bakelite.
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 sine wave signal to driving circuit by DDS chip；The driving electricity
Path built-in push-pull circuit is to amplify the sine wave signal that main control module transmits；The driving circuit is connected to export with transmitting coil
Amplified sine wave signal；The receiving coil receives the signal of transmitting coil and received circuit is sent to main control module；When
When part metallic inclusion to be checked, the first receiving coil, the received letter of the second receiving coil can be made by the process of receiving coil
Number phase and amplitude generate the variation in different time points, this signal intensity obtains letter after phase sensitive detection and low-pass filtering treatment
Number changing value, when signal intensity value is greater than threshold value, main control module issues alarm signal.
When being equipped with electric field shielding film and magnetic field shielding film simultaneously in shielded layer, between electric field shielding film and magnetic field shielding film
Separated with insulating layer；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 omits
Less than the half of transmitting coil area；The operating voltage of the driving circuit is in 15V or more, the operating current of driving circuit
In 6A or more；Insulating supporting structure, the insulating supporting structure bottom surface are equipped with below the conveyer structure in the metal detection area
With ground face contact, insulating supporting structure is formed with nonmetallic materials.
In the utility model, gantry shape testing stand lower passage is sense channel；Inspection is equipped in the shape testing stand of gantry
Survey module；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 equal
It is parallel with sense channel；The transmitting coil is located above each receiving coil and parallel with it；Each receiving coil is with transmitting coil
The central point of installation position is symmetric points, is symmetrical arranged above sense channel；This is designed so that coil need not be logical around detection
Road need to only be buckled to gantry shape testing stand on conveyer belt, also can easily carry out to probe in maintenance during installation
Disassembly.
In the utility model, insulating supporting structure is equipped with below the belt conveyor structure in the metal detection area, it is described
Insulating supporting structure bottom surface and ground face contact, insulating supporting structure are formed with nonmetallic materials；The design reduces at conveyer belt
Metal interference source.
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, so that the present apparatus be allowed to be turned up
It is still not easy to report by mistake after sensitivity.
In the utility model, 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, the first receiving coil, the received letter of the second receiving coil can be made by receiving coil process
Number phase and amplitude generate the variation in different time points, this signal intensity obtains letter after phase sensitive detection and low-pass filtering treatment
Number changing value, when signal intensity value is greater than threshold value, main control module issues alarm signal；The online design circle receives aspect and uses
Differential signal design has very strong anti-interference ability, and can pass through the operation of main control module DSP, strengthens probe to ring
Border Noise Identification, promotes the anti-interference ability of probe, so that the present apparatus be allowed still to be not easy to report by mistake after detection sensitivity is turned up.
In the utility model, dsp chip built in the main control module；Dsp chip is exported by DDS chip to driving circuit
Sine wave signal；Push-pull circuit built in the driving circuit is to amplify the sine wave signal that main control module transmits；The driving electricity
The operating voltage on road is in 15V or more, and the operating current of driving circuit is in 6A or more；The design is set using the transmitting of powerful signal
Meter, and push-pull circuit is used to strengthen emissivities further to promote circuit efficiency, so as to effectively with high-power letter
Number inhibit ambient noise, so that the present apparatus is coped with the quick detection of big quantity part to be checked.
In the utility model, the shielded layer includes electric field shielding film or magnetic field shielding film；When being equipped with simultaneously in shielded layer
When 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 can
Capacity effect when screened film stacking is reduced, due to electric field shielding film, the equal reliable ground of magnetic field shielding film, avoids tiring out at screened film
Accumulated charge or potential, and use flexible membrane for shielding, it can be reduced disturbance when screened film is shaken to electric field, help to promote inspection
The anti-interference ability of probing head, so that the present apparatus be allowed still to be not easy to report by mistake after detection 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 the anti-interference of the present apparatus and stablizing electromagnetic environment
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.
Detailed description of the invention
The present invention is described in more detail with reference to the accompanying drawings and detailed description:
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 schematic diagram of gantry shape testing stand；
Attached drawing 6 is another 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；19- metal detection area；20-
Insulating supporting structure.
Specific embodiment
As shown in Figs 1-4, a kind of metal detection conveyer belt of high sensitivity, one section of the conveyer belt transmission path are gold
Belong to detection zone；The conveyer structure in the metal detection area is small to electromagnetic disturbance or undisturbed structure；The metal inspection
Area is surveyed to be set in the lower passage of gantry shape testing stand；The channel is sense channel；Detection mould is equipped in the shape testing stand of gantry
Block；The detection module includes protecting crust 6, main control module 10, driving circuit 13, transmitting coil 1, receiving coil 2 and receives electricity
Road 14；The receiving coil 2 is even number, and each 2 specification of receiving coil is identical and is respectively positioned on 11 top of sense channel；It is described respectively to connect
Take-up circle 2 is parallel with sense channel 11；The transmitting coil 1 is located above each receiving coil 2 and parallel with it；It is each to receive line
Circle is symmetrical arranged above sense channel using the central point of transmitting coil installation position as symmetric points.
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 conveys in the sense channel 11；The conveyer structure in the metal detection area is formed with nonmetallic materials, or
Detection zone conveyer structure is at work without the metalwork of progress displacement movement.
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；The shielded layer includes electric field shielding film 15 or magnetic field shielding film 17.
The electric field shielding film is formed with metallic copper or copper-clad silver conductive paint.
The magnetic field shielding film is formed with high magnetic conductivity material material conductive paint.
The outer casing is formed with stainless steel, the coil layer be equipped with coil backplate 3, the coil backplate 3 with bakelite at
Type.
The buffer layer 7 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 sine wave signal to driving circuit by DDS chip；
Push-pull circuit built in the driving circuit is to amplify the sine wave signal that main control module transmits；The driving circuit and transmitting coil
It is connected to export amplified sine wave signal；The receiving coil receives the signal of transmitting coil and received circuit is sent to master
Control module；When part metallic inclusion to be checked, the first receiving coil, the second receiving coil can be made by the process of receiving coil
Received signal phase and amplitude generate the variation in different time points, this signal intensity is through phase sensitive detection and low-pass filtering treatment
After obtain signal intensity value, when signal intensity value be greater than threshold value when, main control module issue alarm signal.
When being equipped with electric field shielding film and magnetic field shielding film simultaneously in shielded layer, between electric field shielding film and magnetic field shielding film
Separated with insulating layer；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 omits
Less than the half of transmitting coil area；The operating voltage of the driving circuit is in 15V or more, the operating current of driving circuit
In 6A or more；Insulating supporting structure 20, the insulating supporting structure 20 are equipped with below 4 structure of conveyer belt in the metal detection area
Bottom surface and ground face contact, insulating supporting structure are formed with nonmetallic materials.
Embodiment 1:
In this example, the conveyer structure in metal detection area is formed with nonmetallic materials, and conveyer belt transmission surface is also with nonmetallic
Material molding, when carrying out metal detection, the communicated band of part to be checked is sent into sense channel 11, when part to be checked makes close to receiving coil
First receiving coil, the second receiving coil received signal generate the difference in different time points, when the first receiving coil and the
When the difference that two receiving coils receive signal is greater than threshold value, main control module issues alarm signal.
Embodiment 2:
The conveyer mechanism that conveyer belt in embodiment 1 is located in metal detection area is formed with nonmetallic materials, conveyer belt
Conveyor surface is also formed with nonmetallic materials.
Embodiment 3:
In embodiment 1, if conveyer belt is located at the conveyer mechanism in metal detection area, there are metalworks, visit in installation
After head, first make conveyer belt idle running for a period of time, so as to electromagnetism when the dsp chip identification conveyer belt in main control module is run
The disturbance of field can effectively filter out conveyer belt to electricity after receiving circuit derived signals so that in commencement of commercial operation, dsp chip is received
The interference that disturbance of magnetic field is formed reduces rate of false alarm.
Embodiment 4:
When installing the detection function of the utility model on old conveyer belt, because assembly line conveyer belt upper backup pad is generally gold
Belong to, the insulating supporting structure of the utility model should be changed into, i.e., metal plate is extracted out, change plastic plate into, plastic plate can customize in advance
1.1, the plurality of specifications such as 1.2,1.3 meters.
Claims (8)
1. a kind of metal detection conveyer belt of high sensitivity, it is characterised in that: one section of the conveyer belt transmission path is metal
Detection zone；The metal detection area is set in the lower passage of gantry shape testing stand；The channel is sense channel；The inspection of gantry shape
It surveys and is equipped with detection module in frame；The detection module includes protecting crust, main control module, driving circuit, transmitting coil, receiving coil
With reception circuit；The receiving coil is even number, and each receiving coil specification is identical and is respectively positioned on above sense channel；It is described each
Receiving coil is parallel with sense channel；The transmitting coil is located above each receiving coil and parallel with it；Each receiving coil
Using the central point of transmitting coil installation position as symmetric points, it is symmetrical arranged above sense channel；
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；The shielding
Layer includes electric field shielding film or magnetic field shielding film；
The transmitting coil quantity is one, and each receiving coil is in the same plane；The sense channel is in metal detection
The sense channel of part to be checked is irreversibly delivered when probe work；The conveyer structure in the metal detection area with nonmetallic materials at
Type or detection zone conveyer structure are at work without the metalwork of progress displacement movement；
Electric field shielding film, the equal reliable ground of magnetic field shielding film；
Be equipped with insulating supporting structure below the belt conveyor structure in the metal detection area, the insulating supporting structure bottom surface with
Ground face contact, insulating supporting structure are formed with nonmetallic materials；
The insulating supporting structure includes the upper backup pad of assembly line conveyer belt；The upper backup pad is with plastic shaping, upper support
The dimensions of plate includes 1.1 meters, 1.2 meters, 1.3 meters.
2. a kind of metal detection conveyer belt of high sensitivity according to claim 1, it is characterised in that: the electric field shielding
Film is formed with metallic copper or copper-clad silver conductive paint.
3. a kind of metal detection conveyer belt of high sensitivity according to claim 1, it is characterised in that: the magnetic field shielding
Film is formed with high magnetic conductive material conductive paint.
4. a kind of metal detection conveyer belt of high sensitivity according to claim 1, it is characterised in that: the outer casing with
Stainless steel molding, the coil layer are equipped with coil backplate, and the coil backplate is formed with bakelite.
5. a kind of metal detection conveyer belt of high sensitivity according to claim 1, it is characterised in that: the buffer layer with
Hard foam molding.
6. a kind of metal detection conveyer belt of high sensitivity according to claim 1, it is characterised in that: the main control module
It is connected with driving circuit, reception circuit；The driving circuit is connected with transmitting coil；The receiving coil and reception circuit phase
Even；The receiving coil is made of identical first receiving coil of specification and the second receiving coil, DSP built in the main control module
Chip；Dsp chip exports sine wave signal to driving circuit by DDS chip；Push-pull circuit is built in the driving circuit to put
The sine wave signal that big main control module transmits；The driving circuit is connected to export amplified sine wave letter with transmitting coil
Number；The receiving coil receives the signal of transmitting coil and received circuit is sent to main control module.
7. a kind of metal detection conveyer belt of high sensitivity according to claim 1, it is characterised in that: when same in shielded layer
When be equipped with electric field shielding film and magnetic field shielding film when, separated between electric field shielding film and magnetic field shielding film with insulating layer；The master
Control module, driving circuit and reception circuit are divided into different electromagnetic shielding containers.
8. a kind of metal detection conveyer belt of high sensitivity according to claim 1, it is characterised in that: the emission lines
Circle, receiving coil are rectangle；The receiving coil quantity is two, and the area of receiving coil is slightly less than transmitting coil area
Half；The operating voltage of the driving circuit is in 15V or more, and the operating current of driving circuit is in 6A or more；The metal
Insulating supporting structure, the insulating supporting structure bottom surface and ground face contact, insulation branch are equipped with below the conveyer structure of detection zone
Support structure is formed with nonmetallic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721795548.5U CN208207235U (en) | 2017-12-20 | 2017-12-20 | A kind of metal detection conveyer belt of high sensitivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721795548.5U CN208207235U (en) | 2017-12-20 | 2017-12-20 | A kind of metal detection conveyer belt of high sensitivity |
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| Publication Number | Publication Date |
|---|---|
| CN208207235U true CN208207235U (en) | 2018-12-07 |
Family
ID=64490251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201721795548.5U Active CN208207235U (en) | 2017-12-20 | 2017-12-20 | A kind of metal detection conveyer belt of high sensitivity |
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| CN (1) | CN208207235U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189655A (en) * | 2021-04-30 | 2021-07-30 | 上海领先仪器有限公司 | High anti-interference multichannel metal detection instrument |
-
2017
- 2017-12-20 CN CN201721795548.5U patent/CN208207235U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189655A (en) * | 2021-04-30 | 2021-07-30 | 上海领先仪器有限公司 | High anti-interference multichannel metal detection instrument |
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