CN1128035C - Spot welder head with pressure display - Google Patents
Spot welder head with pressure display Download PDFInfo
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- CN1128035C CN1128035C CN 01114856 CN01114856A CN1128035C CN 1128035 C CN1128035 C CN 1128035C CN 01114856 CN01114856 CN 01114856 CN 01114856 A CN01114856 A CN 01114856A CN 1128035 C CN1128035 C CN 1128035C
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- pressure
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- digital display
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Abstract
The present invention relates to a spot welder head which can regulate welding pressure and have digital display. The present invention is composed of a pressure regulation device and a mechanical transmission mechanism. The present invention is characterized in that the pressure regulation device is composed of a pressure regulator, a slide wire sample resistor, an electronic circuit and a digital display. The welding pressure regulation is accurate and convenient, and repeatability is good. A digital display part of the pressure regulation device is installed in a concave frame on the front end of the welder head; the welding pressure display is visual; the structure of the welder head is compact, and welding space is not occupied. The present invention is favorable to the smooth completion of welding operation.
Description
Technical field
The present invention relates to a kind of spot welder head of regulating welding pressure and the demonstration of band numeral.
Background technology
Point electric welding welding is that a large amount of electric currents passes through two soldered metallic objects in moment, and electric energy is converted into heat energy, makes this two metallic objects produce the welding processes of fusion.Electric spot-welding machine is by regulating welding pressure (F), voltage pulse output amplitude (V) and three groups of parameters of width (T), according to ENERGY E=V
2T/R reaches best welding energy, thereby realizes meticulous welding at microscopically.Voltage pulse output amplitude and width are by the host computer control that plays the power supply regulating and controlling effect, and welding pressure is regulated and control by welder head.Because the welding object of electric spot-welding machine is enamel-covered wire, lametta or corresponding metal band, the sheet metal of Φ 0.02mm-Φ 0.80mm.Realize so meticulous welding, welding pressure is most important.If welding pressure regulate improper will occur not prison welding by, solder joint comes off easily or phenomenons such as welding material break.Existing welder head is grouped into by pressure-regulating device and mechanical drive department, and is connected with welding head holder by mechanical driving part.Present pressure-regulating device is pure frame for movement, and soldering tip pressure according to conversion table or according to the compressed distance of spring, draws pressure parameter by calculating the thread turns of adjusting screw(rod).The defective of this pressure-regulating device maximum is that the pressure parameter error that converts out is big, it is not directly perceived to show, for the tiny workpiece of welding, can not guarantee welding quality.
Summary of the invention
The purpose of this invention is to provide a kind of spot welder head, it can conveniently regulate welding pressure, and can intuitively show pressure parameter, and compact conformation is easy for installation, does not influence the welding job space.
For achieving the above object, the spot welder head that band pressure of the present invention shows is made up of pressure-regulating device and mechanical transmission mechanism, it is characterized in that pressure-regulating device is made up of pressure regulator, take a sample slide wire resistance, electronic circuit and digital display four parts.Pressure regulator by adjusting screw(rod), be attached to the adjusting nut on the adjusting screw(rod), upper spring and the spacing card that is enclosed within on the adjusting screw(rod) formed; The movable end of sampling slide wire resistance is fixed on the adjusting nut; The end of spacing card links to each other with lower spring and soldering tip; The input of electronic circuit is connected with movable end with the stiff end of sampling slide wire resistance, and output is connected with digital display.For intuitive display, handpiece structure compactness, do not take the welding space, help finishing smoothly of welding job, digital display can be installed on the recessed frame of head grillage front end.Electronic circuit is the conversion equipment of resistance and pressure, and it converts the corresponding relation F=KX (K is a coefficient of elasticity) of elastic force F and spring length X to the corresponding relation F=f (R) of elastic force and resistance value R.As long as know the resistance of sampling slide wire resistance, but just simple computation goes out the pressure size of soldering tip, and shows by charactron or LCD.
Pressure-regulating device of the present invention also available pressure sensor replaces.The contact of sensor is installed on the deformation chamber that is positioned on the spacing card, and under the acting in conjunction of upper spring and lower spring, mechanical deformation takes place in the deformation chamber, and sensor is handled by signal according to deformation again, and pressure parameter is presented on charactron or the LCD.
When the rotation adjusting screw(rod), adjusting screw(rod) drives adjusting nut and moves up and down, the movable end of sampling slip also moves up and down thereupon, the resistance of slide wire resistance of causing taking a sample changes, and the moving up and down of adjusting nut, the spring force that is enclosed within on the screw rod is changed, and this elastic force is exactly that soldering tip is applied to pressure F on the weldment, and directly reads by electronic circuit and digital display.The operator needs only at every turn spring force is set up in certain value, and is shown by numeral, and welding pressure is corresponded to actual needs, and is accurately convenient, and good reproducibility is guaranteed each quality of welding.Because the digital display portion of pressure-regulating device and circuit part are installed in the recessed frame of head front end, this not only makes aesthetic in appearance, the compact conformation of welding machine, more can not reduce the working space of welding machine, influences welding job.The head of electric spot-welding machine is by being connected with welding head holder, handling the mechanical device that soldering tip carries out welding job.The digital display portion of pressure-regulating device is installed in the recessed frame of head front end.Install like this, intuitive display, handpiece structure compactness do not take the welding space, help finishing smoothly of welding job.
Description of drawings
Below by accompanying drawing the present invention is described in further detail.
Fig. 1 is the structural representation of the spot welder head of band pressure demonstration.
Fig. 2 is the structure chart of soldering tip pressure-regulating device.
Fig. 3 is the electronic circuit schematic diagram.
Fig. 4 is the pressure sensor fundamental diagram.
Fig. 5 makes the circuit block diagram that pressure shows for adopts pressure sensor.
The specific embodiment
Among Fig. 1,1 is handpiece case, and 2 is pressure regulator, and 3 is the spot welder head support, and 4 is welding head holder, and 5 is soldering tip, and 7 is electronic circuit, and 8 is digital display.Electronic circuit and digital display all are installed in the recessed frame of head front end.
Among Fig. 2,11 is adjusting screw(rod), 12 for being enclosed within the adjusting nut on the adjusting screw(rod) 11,13 for being enclosed within the upper spring on the adjusting screw(rod) 11, upper spring 13 1 ends withstand adjusting nut 12, the other end connects restriction card 14, and this restriction card also works to bear and transmit pressure except that the certain scope of activities of restriction soldering tip; The contact 15 of sampling slide wire resistance 16 is fixed on the adjusting nut 12, and the input of electronic circuit 7 connects the contact and a stiff end of sampling slide wire resistance 16, and output connects digital display 8.
Among Fig. 3, the core component of electronic circuit is a large scale integrated circuit 7107, and this chip aims at the digital multimeter design
The position general-purpose chip.Its collection A/D conversion, functions such as charactron promotion and digital processing.Its circuit connects: the 1st pin of integrated circuit 7107 connects+the 5V power supply, and the 2nd to the 15th, 25 pin connect the negative terminal of charactron GDL (digital display), and charactron GDL anode connects+the 5V power supply through R6; The 21st, 30,32 pin ground connection of integrated circuit 7107, the 26th pin connects-the 5V power supply, and the 27th, 29 foot meridian capacitor C1, C2 are connected, and the 28th pin connects the intermediate connection point of C1, C2 through R2, the 31st pin one tunnel is through C3 ground connection, and another road connects the middle contact of sampling slide wire resistance r2 through R3; The end ground connection of r2, the other end connects+the 5V power supply through r1, R1; The 33rd, 34 pin of integrated circuit 7107 are connected by C4, and the 35th, 36 pin are connected by R7, and the 36th pin connects+the 5V power supply through R5, and the 38th, 39 pin are connected with the 40th pin by C5, R4 respectively.Its electrical schematic diagram is described as follows:
(1) as the input IN+ of circuit, IN-(i.e. 7107 pin 31 and 30 among the figure) is when adding the signal of 200mv, and the charactron of being made up of light emitting diode has maximum reading 1999 (to be called
The position), this reading can be represented physical quantitys such as voltage, electric current, resistance, inductance, electric capacity, temperature, pressure.Therefore as long as measurand is converted into voltage, this physical quantity just can be measured.
(2) the present invention designs for gaging pressure, and it utilizes the variation of above-mentioned sampling slide wire resistance cleverly, and its voltage is changed.The variation of this voltage is as being shown by the charactron that light emitting diode is formed described in (1).
(3) R among the figure
1, r
1, r
2The comprehensive resistance of forming sampled signal, wherein R
1Be current-limiting resistance, r
1Be to regulate variable resistor (playing fine setting and calibration function), r
2Be aforesaid sampling slide wire resistance, when spring pressure F strengthens, swept resistance moves down, and the voltage of the input that is added in circuit (pin 31 and 30) is increased, so the pressure that charactron is read just increases.
(4) caused the variation of circuit input end voltage by changes in resistance, because this variation is linear basically, so it can represent the variation of pressure more accurately.
Among Fig. 4,13 is upper spring, and 17 is lower spring, and the end of spacing card 14 links to each other with lower spring 17 and soldering tip, and 19 for being positioned at the deformation chamber on the restriction card 14, and 20 is terminal plate, and 7 is electronic circuit, and 8 is display, and pressure sensor is positioned at deformation chamber 19.The transmission mechanism of the F that makes a concerted effort by head by spring 13 and spring 17 acts on soldered workpiece.At this moment small deformation takes place in transmission mechanism.The present invention utilizes this transmission mechanism to make the pressure sensor that deformation chamber 19 reaches at transmission mechanism downside and side sealing label thereof cleverly.Stressed size when workpiece is soldered like this just can be by the signal of telecommunication of pressure sensor, shows accurately through the processing of electric theory diagram shown in Figure 5.Adopts pressure sensor is measured the stressed size of welded part, can show the overall process that is stressed when workpiece is soldered accurately, the accuracy of measurement height, and relative error can reach 0.1%.
Among Fig. 5, pressure sensor 31 connects microprocessor (CPU) 30 through program control micro-signal amplifier 32, middling speed A/D conversion 33, signal switches transmission mechanism 34 and is connected with pressure sensor 31, program control micro-signal amplifier 32, middling speed A/D conversion 33 respectively, pressure sensor 31 temperature compensated circuit 35 in addition connects microprocessor 30, microprocessor 30 other linkers respectively and data storage 36, electrically-erasable memory 37, numeral demonstration 38, temperature-compensation circuit 35.This part critical component is a microprocessor, and the small-signal of the stressed generation of pressure sensor is amplified through programmable amplifier, carries out analog to digital conversion again, becomes data and is shown by charactron after microprocessor is handled.Because this welding machine will be applicable to the area of each different temperatures of the whole world, the influence of its temperature difference is lowered as far as possible, so adopted temperature-compensation circuit.
Claims (4)
1. a spot welder head that shows with pressure is made up of pressure-regulating device and mechanical transmission mechanism, it is characterized in that pressure-regulating device is made up of pressure regulator, take a sample slide wire resistance, electronic circuit and digital display four parts.
2. spot welder head that band pressure as claimed in claim 1 shows, it is characterized in that pressure regulator by adjusting screw(rod), be attached to the adjusting nut on the adjusting screw(rod), spring and the spacing card that is enclosed within on the adjusting screw(rod) formed; The movable end of sampling slide wire resistance is fixed on the adjusting nut; The end of spacing card links to each other with another spring and soldering tip; The input of electronic circuit is connected with movable end with the stiff end of sampling slide wire resistance, and output is connected with digital display.
3. the spot welder head that band pressure as claimed in claim 1 shows is characterized in that digital display is installed on the recessed frame of head grillage front end.
4. spot welder head that band pressure as claimed in claim 1 or 2 shows, the connection that it is characterized in that electronic circuit is: the 1st pin of integrated circuit 7107 connects+the 5V power supply, the the 2nd to the 15th, 25 pin connect the negative terminal of charactron GDL (digital display), and charactron GDL anode connects+the 5V power supply through R6; The 21st, 30,32 pin ground connection of integrated circuit 7107, the 26th pin connects-the 5V power supply, and the 27th, 29 foot meridian capacitor C1, C2 are connected, and the 28th pin connects the intermediate connection point of C1, C2 through R2, the 31st pin one tunnel is through C3 ground connection, and another road connects the middle contact of sampling slide wire resistance r2 through R3; The end ground connection of r2, the other end connects+the 5V power supply through r1, R1; The 33rd, 34 pin of integrated circuit 7107 are connected by C4, and the 35th, 36 pin are connected by R7, and the 36th pin connects+the 5V power supply through R5, and the 38th, 39 pin are connected with the 40th pin by C5, R4 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01114856 CN1128035C (en) | 2001-06-25 | 2001-06-25 | Spot welder head with pressure display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01114856 CN1128035C (en) | 2001-06-25 | 2001-06-25 | Spot welder head with pressure display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1323675A CN1323675A (en) | 2001-11-28 |
| CN1128035C true CN1128035C (en) | 2003-11-19 |
Family
ID=4661464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01114856 Expired - Fee Related CN1128035C (en) | 2001-06-25 | 2001-06-25 | Spot welder head with pressure display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1128035C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323795C (en) * | 2004-05-14 | 2007-07-04 | 杨仕桐 | Precise welding machine with long suspension arm |
| CN1593831A (en) * | 2004-07-05 | 2005-03-16 | 杨仕桐 | Spot welding machine head with a pressure sensor |
| WO2009137957A1 (en) * | 2008-05-16 | 2009-11-19 | Yang Shitong | Exact spot welder for resistance welding |
| CN102225498A (en) * | 2011-06-20 | 2011-10-26 | 珠海精易焊接设备有限公司 | Nose of double buffering electronic spot welder |
| CN103658960A (en) * | 2013-12-03 | 2014-03-26 | 广州微点焊设备有限公司 | Spot welding machine for resistance welding micro-welding |
| CN105618915B (en) * | 2016-03-30 | 2019-02-22 | 深圳华航智能装备技术有限公司 | A kind of numerical control battery butt-welding machine and battery butt-joint method |
| CN106984888A (en) * | 2017-04-11 | 2017-07-28 | 上乘精密科技（苏州）有限公司 | A kind of argon arc welding board self-checking device |
-
2001
- 2001-06-25 CN CN 01114856 patent/CN1128035C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1323675A (en) | 2001-11-28 |
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| SE01 | Entry into force of request for substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031119 Termination date: 20170625 |
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| CF01 | Termination of patent right due to non-payment of annual fee |