CN209664564U - A kind of electric resistance welding current detection means - Google Patents
A kind of electric resistance welding current detection means Download PDFInfo
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- CN209664564U CN209664564U CN201920305991.2U CN201920305991U CN209664564U CN 209664564 U CN209664564 U CN 209664564U CN 201920305991 U CN201920305991 U CN 201920305991U CN 209664564 U CN209664564 U CN 209664564U
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- resistance welding
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Abstract
The utility model discloses a kind of electric resistance welding current detection means, it is characterized in that, including being fixedly installed in Resistance welding gun working range, the current signal of non-active area detects window, the current signal detection window includes for the perforation of Resistance welding gun centering welding and around perforated peripheral laying for assembling the magnetic bead of Resistance welding gun centering welding current induced magnetic field, the magnetic bead is continuously laid to form c-type magnet ring, wherein: the c-type magnet ring opening is equipped with Magnetic Sensor, the Magnetic Sensor be equipped with connecting terminal to connect power circuit and output circuit: when Resistance welding gun in the perforation to middle welding when, the Magnetic Sensor acquires the welding current magnetic field sensor signal of the magnetic bead aggregation and is converted to voltage signal output, to realize the non-cpntact measurement of electric resistance welding electric current, it ensure that Resistance Welding The accuracy and safety of current detecting are connect, while having many advantages, such as that pinpoint accuracy, measurement range are wide, thickness is small, low in energy consumption.
Description
Technical field
The utility model belongs to current detecting field, more particularly, to a kind of electric resistance welding current detection means.
Background technique
Electric resistance welding is a kind of efficient welding method that metal works link together, and is after combining weldment,
Apply pressure by electrode, the side welded using electric current by the resistance heat that the contact surface and adjacent domain of connector generate
Method.Electric resistance welding to be mainly characterized by weldingvoltage very low (1~12V), welding current very big (tens~a few kiloamperes), complete one
The weld interval of a connector is extremely short (0.01~several seconds), therefore productivity is high；When heating, butt joint applies mechanical pressure, and connector exists
Soldering under the action of pressure；And when welding, filling metal packing is not needed.Electric resistance welding is widely used in, automobile manufacture, hardware
There are up to millions of a solder joints in the industrialized mass productions such as household electrical appliances, such as in new passenger aircraft.
With the increasingly raising of industrial automatization, the quality monitoring of process of producing product is required to be increasingly stringenter,
Therefore, resistance welding process is monitored and controlled using more accurate method and quality is many producer's urgent problems.
Welding current is the important evidence for monitoring quality of welding spot.When being welded using resistance welding equipment, to ensure
Welding quality, need to the welding current to resistance welding equipment accurately grasped.It, cannot but during electric resistance welding
It is directly detected to by the welding current in welding zone domain, in addition since the resistance heat of contact surface and adjacent domain generation is larger,
So that the detection difficulty of welding current further increases, operator is only capable of estimating welding current value with practical experience, thus existing
Nowadays the current detection means for lacking the electric resistance welding that a kind of design is reasonable and realization is convenient, using effect is good, so that resistance
Energy is easy in weldering welding process, quickly and accurately detects welding current.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the utility model provides a kind of electric resistance welding electric current inspection
Device is surveyed, its object is to carry out non-contact detection to electric resistance welding electric current by using current signal detection window, thus
Realize electric resistance welding real-time current detection, thus solve the prior art can not the technology of accurate detection resistance weldering welding current ask
Topic.
To achieve the above object, according to the one aspect of the utility model, a kind of electric resistance welding current detecting is provided
Device, which is characterized in that including being fixedly installed in Resistance welding gun working range, the current signal of non-active area detect window,
The current signal detection window includes being used for for the perforation of Resistance welding gun centering welding and around what the perforated peripheral was laid
Assemble the magnetic bead of Resistance welding gun centering welding current induced magnetic field, the magnetic bead is continuously laid to form c-type magnet ring, in which: institute
C-type magnet ring opening is stated equipped with Magnetic Sensor, the Magnetic Sensor is equipped with connecting terminal to connect power circuit and output circuit:
When Resistance welding gun in the perforation to middle welding when, the Magnetic Sensor acquires the welding current induction magnetic of magnetic bead aggregation
Field signal is simultaneously converted to voltage signal output.
Preferably, the electric resistance welding current detection means, current signal detect window with a thickness of 12mm~17mm.
Preferably, the electric resistance welding current detection means, it includes at least eight magnetic bead that current signal, which detects window,.
Preferably, the electric resistance welding current detection means, penetration hole diameter are 60mm~62mm.
Preferably, the electric resistance welding current detection means, c-type magnet ring diameter are 64mm~66mm.
Preferably, the electric resistance welding current detection means, current signal detection window are additionally provided with sealed insulation shell
Body, the c-type magnet ring, Magnetic Sensor are packaged in the enclosure interior.
Preferably, the electric resistance welding current detection means, shell surrounding are additionally provided with mounting hole, the electric current
Signal detection window is fixedly attached to copper bar or panel by the mounting hole.
Preferably, the electric resistance welding current detection means, mounting hole aperture are 5.2mm.
Preferably, the electric resistance welding current detection means, connecting terminal are 4 core cables.
Preferably, the electric resistance welding current detection means, further includes slave computer, the slave computer and the electricity
The connection of signal detection window signal is flowed, to receive the voltage signal of the current signal detection window output.
In general, have the above technical solutions conceived by the present invention are compared with the prior art, with following
Beneficial effect:
(1) electric resistance welding current detection means provided by the utility model, by Resistance welding gun working range, it is non-
The setting current signal of working region detects window, the non-cpntact measurement of welding current is realized using Magnetic Sensor, so that resistance
Energy is easy in weldering welding process, quickly and accurately detects welding current；Simultaneously as using magnetic bead instead of coil with poly-
Collect the mode in magnetic field, while so that the range of the current detecting window is increased to Wan An training, reduces the thickness of current detecting window
Degree, to have many advantages, such as that pinpoint accuracy, measurement range are wide, thickness is small, low in energy consumption.
(2) electric resistance welding current detection means provided by the utility model, by by current detecting window insulated enclosure, from
And the influence for even avoiding the environmental factors such as weld fumes to electric resistance welding peace welding current detection is reduced, and then improve accurately
Rate.
(3) electric resistance welding current detection means provided by the utility model, by the way that current detecting window to be connected to down
Position machine, the slave computer are connect with current signal detection window signal, to receive the voltage letter of the current detecting window output
Number, the program set by slave computer, according to the voltage signal real-time display electric resistance welding current information received, thus
Determine Resistance welding gun state, early warning can be carried out before operation off quality progress, even avoid welding from lacking to reduce
Sunken generation and spilling improves yield rate to reduce production cost.
Detailed description of the invention
Fig. 1 is 1 current detecting window top view of the utility model embodiment；
Fig. 2 is 1 current detecting window left view of the utility model embodiment.
In all the appended drawings, identical appended drawing reference is used to denote the same element or structure, in which: the inspection of 1- current signal
Survey window；2- current signal detects window perforation；3- current signal detects window connecting terminal；4- current signal detects window shell；5- electricity
Flow signal detection window mounting hole.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to embodiments, to this
Utility model is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain that this is practical
It is novel, it is not used to limit the utility model.In addition, involved in the various embodiments of the present invention described below
Technical characteristic can be combined with each other as long as they do not conflict with each other.
Inventor directly affects the quality of final welding quality by experimental demonstration, the health status of welding equipment repeatedly,
It is that welding current, welding gun bear on size, electrode cap surface state that the principal element for influencing welding quality, which has, electrode cap centering
Property etc..And during electric resistance welding, it, cannot be to being welded since the resistance heat that contact surface and adjacent domain generate is larger
The welding current in region is directly detected.
In view of the above-mentioned problems, the utility model provides a kind of electric resistance welding current detection means, including fixed setting
In in Resistance welding gun working range, the current signal of non-active area detect window；As shown in Figure 1, the current signal detects window
It is welded including the perforation welded for Resistance welding gun centering and around what the perforated peripheral was laid for assembling Resistance welding gun centering
The magnetic bead of electric current induced magnetic field is connect, the magnetic bead is continuously laid to form c-type magnet ring, in which: the c-type magnet ring opening is equipped with
Magnetic Sensor, the Magnetic Sensor are equipped with connecting terminal to connect power circuit and output circuit: when Resistance welding gun is worn described
When centering is welded in hole, the Magnetic Sensor acquires the welding current magnetic field sensor signal of the magnetic bead aggregation and is converted to voltage
Signal output.
Specifically, when Resistance welding gun in the perforation to middle welding when, Resistance welding gun centering welding generates weldering
Electric current is connect, according to Ampere's law, the magnetic field for being proportional to the electric current is generated around current-carrying conductor, using being looped around the perforation
The magnetic bead that periphery is laid assembles magnetic field, meanwhile, voltage signal output is converted magnetic fields to by Magnetic Sensor, is exported by acquisition
Voltage signal can obtain electric resistance welding size of current.
The current signal detection window is preferably Hall current sensor, and Hall current sensor is a kind of using semiconductor
Material and according to Hall effect principle be made made of magnetoelastic transducer part, be applied to Ampere's law, i.e., in current-carrying
The magnetic field for being proportional to the electric current is generated around conductor, and Hall current sensor is then used to measure this magnetic field, Hall current
Sensor have passed through electricity-magnetic-electricity and be dielectrically separated from conversion, specifically, control electric current IC is passed through in input terminal, when there is resistance
It welds the induced magnetic field B that welding current generates and passes through the device sense magnetic surface, then Hall voltage VH occur in output end, by measuring suddenly
You measure the size of current-carrying conductor electric current at the size of potential indirectly, to realize the non-cpntact measurement of electric resistance welding electric current.
Hall current sensor mainly includes the Hall current sensor of closed loop and the Hall current of open loop in the prior art
Sensor, in which: the Hall current sensor of open loop is using Hall direct amplifier system principle, the course of work are as follows: primary current
(Ip) when passing through a conducting wire, a magnetic field, the size in this magnetic field and the electric current for flowing through conducting wire will be generated in conducting wire surrounding
Directly proportional, it can be assembled by magnetic core senses on hall device and it is made to have signal output.This signal amplifies through signal
It is directly exported after device amplification, the signal of hall device output has accurately reflected the output situation of primary current；The Hall electricity of closed loop
Flow sensor is using magnetic balance principle.Open loop and closed loop can monitor alternating current, and general closed loop is supervised suitable for low current
It surveys, open loop is suitable for high current warning, and the Hall current sensor of open loop is small with package dimension, measurement range is wide, again
Measure light, the low loss of power, without Insertion Loss the advantages that；When due to being welded using resistance welding equipment, welding current is very big (several
Ten~a few kiloamperes), it is therefore preferred that the Hall current sensor is open loop type Hall current sensor.
The Hall current sensor, thickness are preferably 12mm~17mm, to ensure that Resistance welding gun can be in the electricity
Flow centering welding in the perforation of signal detection window.
When due to being welded using resistance welding equipment, welding current very big (tens~a few kiloamperes, a few cases
Amperes lower or even up to ten thousand), therefore, Hall current sensor thickness on the market is generally 25mm or more, to meet Resistance Welding
Connect current detecting demand；Hall current sensor provided by the utility model, while reducing the thickness, in order to meet resistance
It welds welding current and detects demand, use magnetic bead instead of coil in a manner of assembling magnetic field, the magnetic bead, quantity is at least 8,
Its material Ferrite, 0805 chip inductor magnetic bead 4.7UH of model TELESKY, so that the Hall current sensor
Range is increased to Wan An training, and thickness meets the requirement of 12mm~17mm.
The Hall current sensor is perforated preferably circular, and diameter is preferably 60mm~62mm, to ensure resistance
Welding gun can be in the perforation that the current signal detects window to middle welding.
The Hall current sensor, c-type magnet ring are mainly used for Resistance welding gun centering welding current sense in aggregation perforation
Magnetic field is answered, for welding gun electrode arm interference in avoiding and perforating, the c-type magnet ring, diameter is preferably 64mm~66mm, opening
Distance is 15mm.
The Hall current sensor, the Magnetic Sensor of c-type magnet ring setting are Hall element, poly- to acquire the magnetic bead
The welding current magnetic field sensor signal of collection is simultaneously converted to voltage signal output.
During the electric resistance welding of the utility model, a large amount of arc light, welding fume, toxic gas, height can be generated
The adverse factors such as frequency electromagnetic radiation, ray, noise and heat radiation will affect Hall current sensor measurement accuracy and use the longevity
Life.It is therefore preferred that the Hall current sensor is additionally provided with shell, the shell is sealed by sealing strip, the c-type magnetic
Ring, Hall element are packaged in the enclosure interior by casting glue.
The Hall current sensor, shell surrounding are additionally provided with mounting hole, and the mounting hole aperture is preferably
The Hall current sensor is fixedly attached to copper bar or panel by the mounting hole by 5.2mm.
The Hall current sensor, connecting terminal are preferably 4 core cables, to be separately connected power circuit and output electricity
Road；Specifically, 4 core cables, have mark, wherein the positive and negative anodes of positive and negative external power supply circuit are marked, to provide work electricity
Pressure；Wherein mark 0 needs external ground, to guarantee safety；Wherein mark M is output interface, external slave computer, by institute
The voltage signal for stating current signal detection window output is transmitted to the slave computer；In the present invention, the M of the connecting terminal
Between delivery outlet and slave computer, load resistance can be selected according to actual needs；The connecting terminal, model are preferably Risym
KF2EDG 3.81MM plug-in type connection terminal is improved efficiency with facilitating plug.
The Hall current sensor, power circuit are the DC power supply of ± 15V, and output circuit is voltage amplification electricity
Current signal is converted to voltage signal and amplifies output by road.
Electric resistance welding current detection means provided by the utility model, further includes slave computer, the slave computer with it is described
Current signal detects window signal connection, to receive the voltage signal of the current signal detection window output；Preferably, the bottom
Machine is hundred barge BAIGS-LX-WM-02 of Wuhan.
The slave computer is equipped with fixed routine, orders watching for the electric resistance welding welding gun for controlling given electric current to be detected to export
Motor is taken, is checked so that Resistance welding gun moves in the Hall current sensor perforation；Since Hall current sensor is surveyed
Electric current and output voltage have good linear relationship program is therefore set in slave computer, the bottom can be passed through
The voltage signal of machine acquisition, real-time display electric resistance welding current information, therefore, it is determined that Resistance welding gun state.
Due in electric resistance welding, not can avoid the pollution of welding post greasy dirt viscose glue, the splashing of chip welding slag etc., under described
Position machine is packaged in inside packaging cartridge, and the packaging cartridge passes through sealing ring insulated enclosure.
When work: when welding gun needs to detect, issuing instruction to servo motor, the Serve Motor Control resistance by slave computer
Welding gun is moved to Hall current sensor punch position, and Hall current sensor is connected to power circuit, and dynamic and static electrode is put in
The perforation, in perforation, dynamic and static electrode is contacted with each other, turn-on current, and an induced magnetic field will be generated around Resistance welding gun,
The size of this induced magnetic field is directly proportional to the welding current for flowing through Resistance welding gun, and the magnetic field of generation is gathered in Hall current sensing
In device c-type magnet ring, by magnet ring be open in Hall element measure and amplify output, and be sent to slave computer, the bottom
The electric resistance welding electric current real time information that machine is obtained according to the sequential operation output set.
It is described further with reference to embodiments:
Embodiment 1
A kind of electric resistance welding current detection means, as shown in Figure 1, including Hall current sensor and slave computer, it is described
Hall current sensor is arranged on vertical columns, which is located at the side in welding gun scope of activities, with the bottom
The connection of machine signal.
The Hall current sensor is open loop type Hall current sensor, with a thickness of 15mm comprising is used for resistance
The perforation of welding gun centering welding and the Resistance welding gun centering welding current that is used to assemble laid around the perforated peripheral incude magnetic
The magnetic bead of field: the perforation is circle, a diameter of 60mm；The magnetic bead, quantity 8, material are Ferrite, type
Number 0805 chip inductor magnetic bead 4.7UH of TELESKY, the magnetic bead are continuously laid to form c-type magnet ring, the c-type magnet ring,
Diameter is 64mm, extended distance 15mm, in which: the c-type magnet ring opening is equipped with Hall element, and the Hall element is set
There is connecting terminal to connect power circuit and output circuit, the connecting terminal is 4 core cables, model Risym KF2EDG
3.81MM plug-in type connection terminal.
The Hall current sensor, shell are sealed by sealing strip, and the c-type magnet ring, Hall element pass through encapsulating
Glue is packaged in the enclosure interior；Its shell surrounding is additionally provided with mounting hole, and the mounting hole aperture is preferably 5.2mm, will
The Hall current sensor is fixedly attached to copper bar or panel by the mounting hole.
The Hall current sensor, the DC power supply of external ± 15V, to provide operating voltage.
The slave computer, hundred barge BAIGS-LX-WM-02 of model Wuhan is interior to be equipped with the program edited, to receive
The voltage signal of the Hall current sensor output, and believed according to the voltage signal real-time display electric resistance welding electric current
Breath, therefore, it is determined that Resistance welding gun state.
The slave computer is equipped with fixed routine, orders watching for the electric resistance welding welding gun for controlling given electric current to be detected to export
Motor is taken, is checked so that Resistance welding gun moves in the Hall current sensor perforation.
The slave computer is packaged in inside packaging cartridge, and the packaging cartridge passes through sealing ring insulated enclosure.
When work: when welding gun needs to detect, issuing instruction to servo motor, the Serve Motor Control resistance by slave computer
Welding gun is moved to Hall current sensor punch position, and Hall current sensor is connected to power circuit, and dynamic and static electrode is put in
The perforation, in perforation, dynamic and static electrode is contacted with each other, turn-on current, and an induced magnetic field will be generated around Resistance welding gun,
The size of this induced magnetic field is directly proportional to the welding current for flowing through Resistance welding gun, and the magnetic field of generation is gathered in Hall current sensing
In device c-type magnet ring, by magnet ring be open in Hall element measure and amplify output, and be sent to slave computer, the bottom
The electric resistance welding electric current real time information that machine is obtained according to the sequential operation output set.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of electric resistance welding current detection means, which is characterized in that including being fixedly installed in Resistance welding gun working range,
The current signal of non-active area detects window, the current signal detection window include for Resistance welding gun centering welding perforation and
The magnetic bead for being used to assemble Resistance welding gun centering welding current induced magnetic field laid around the perforated peripheral, the magnetic bead are continuous
It lays to form c-type magnet ring, in which: the c-type magnet ring opening is equipped with Magnetic Sensor, and the Magnetic Sensor is equipped with connecting terminal
To connect power circuit and output circuit: when Resistance welding gun in the perforation to middle welding when, the Magnetic Sensor acquires institute
It states the welding current magnetic field sensor signal of magnetic bead aggregation and is converted to voltage signal output.
2. electric resistance welding current detection means as described in claim 1, which is characterized in that the current signal detection window is thick
Degree is 12mm~17mm.
3. electric resistance welding current detection means as described in claim 1, which is characterized in that the current signal detects window packet
Include at least eight magnetic bead.
4. electric resistance welding current detection means as described in claim 1, which is characterized in that the penetration hole diameter be 60mm~
62mm。
5. electric resistance welding current detection means as described in claim 1, which is characterized in that the c-type magnet ring diameter is
64mm~66mm.
6. electric resistance welding current detection means as described in claim 1, which is characterized in that the current signal detection window is also
Equipped with sealed insulation shell, the c-type magnet ring, Magnetic Sensor are packaged in the enclosure interior.
7. electric resistance welding current detection means as claimed in claim 6, which is characterized in that the shell surrounding is additionally provided with
Mounting hole, the current signal detection window are fixedly attached to copper bar or panel by the mounting hole.
8. electric resistance welding current detection means as claimed in claim 7, which is characterized in that the mounting hole aperture is
5.2mm。
9. electric resistance welding current detection means as described in claim 1, which is characterized in that the connecting terminal is 4 cores electricity
Cable.
10. electric resistance welding current detection means as described in claim 1, which is characterized in that further include slave computer, under described
Position machine is connect with current signal detection window signal, to receive the voltage signal of the current signal detection window output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920305991.2U CN209664564U (en) | 2019-03-12 | 2019-03-12 | A kind of electric resistance welding current detection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920305991.2U CN209664564U (en) | 2019-03-12 | 2019-03-12 | A kind of electric resistance welding current detection means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209664564U true CN209664564U (en) | 2019-11-22 |
Family
ID=68571254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920305991.2U Active CN209664564U (en) | 2019-03-12 | 2019-03-12 | A kind of electric resistance welding current detection means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209664564U (en) |
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2019
- 2019-03-12 CN CN201920305991.2U patent/CN209664564U/en active Active
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