CN100395066C

CN100395066C - Welding machine with both riveting and welding function and its special torch

Info

Publication number: CN100395066C
Application number: CNB2005100158853A
Authority: CN
Inventors: 王建平
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-04
Filing date: 2005-11-04
Publication date: 2008-06-18
Anticipated expiration: 2025-11-04
Also published as: WO2007051422A1; CN1772426A

Abstract

The present invention provides a welding machine with a rivet welding function, an input controlling circuit of a power supply is arranged in a casing, and a secondary controlling circuit of the controlling circuit is also connected with a welding size specification controlling circuit which can adjust the welding specification of the circuit. The present invention also provides a special torch which can realize a rivet welding function of the soldering machine, the torch comprises a semi automatic welding tip locking device arranged in a torch body, and a part of a handle of a torch casing is provided with a switch device. The present invention can rapidly carry out welding on A3, stainless steel, aluminum alloy, pure aluminium, copper and other metal materials. The welding manner of the present invention has the advantages of high efficiency, welded workpiece deformation prevention, beautiful appearance of the welded workpiece and no postwelding grinding process, the present invention can increase work efficiency to about four times, the material consumption of rivet-welding nails is reduced 50%, welding cost is saved about 20%, and the present invention can easily carry out welding on various products on which common welding manners can not accomplish technological requirements.

Description

The bonding machine and the welding gun thereof that have the rivet welding function

Technical field

The present invention relates to a kind of bonding machine, particularly a kind of bonding machine and welding gun thereof that has the rivet welding function.

Background technology

In the at present international sheet metal process, a lot of workpiece add man-hour, because workpiece is bigger, when not allowing to adopt again than heavy-gauge sheeting, because of workpiece is easy to generate distortion, just must on welding work pieces, weld reinforcement, this welding can be adopted multiple mode, but all there are many disadvantages, as adopt high-grade mash welder spot welding, though the spot welding vestige is slightly little, it has been subjected to the too short restriction of weldering arm, can't carry out the welding of large span, also can be subjected to different thickness of slab spot welding the bigger influence of thin plate side distortion.The welding deformation of other type is even more serious, is difficult to produce a desired effect.

The most advanced at present method, be to adopt direct discharge-type condenser discharge welder to carry out rivet welding, but existing direct discharge-type condenser discharge welder, the charging potential of its storage capacitor is all higher, in the rivet welding process, manufacturing in advance in the weldering nail hole with workpiece because of the rivet welding nail, can contact with the inner hole wall in weldering nail hole, such rivet welding is very little because of the weldering nail hole inner hole wall contact resistance on rivet welding nail and the workpiece.Inevitable meeting produces the distributary phenomenon of the welding current of welding machine in the process of welding, the distributary phenomenon of the welding current of the high more this welding machine of weldingvoltage is serious more, and weld time weldering nail at every turn and also change greatly with the different shunting difference of the welding current of welding machine that cause of contact condition that the hole is followed closely in weldering, this will seriously influence welding reliability and uniformity, voltage is low more, and the shunt influence of the welding current of welding machine is more little like this.And existing rivet welding mode is to process one section undergauge on the top of rivet welding nail, is beneficial to welding and cuts off from here when finishing, and the upper end of undergauge processes the cylindrical body of certain-length simultaneously, so that clamp, guarantees good electrical contact simultaneously.After in case welding is finished, need the upper post body is cut off from undergauge, so neither attractive in appearance carrying out grinding, the energy waste that has increased workload again and produced because of grinding.Simultaneously, undergauge section and upper post body follow closely processed complex because of making rivet welding, the manufacturing cost height, and the undergauge section and the upper post body of cut-out go out of use, and have caused at least 50% waste of raw materials, again because of the processing technology complexity, the waste when causing 90% worker.And when and welding at surface requirements higher sheet materials such as stainless steel thin, because of cutting off and grinding process can produce serious deformation to welding work pieces by the weldering sheet metal thickness.

Summary of the invention

For solving the problem that exists in the above-mentioned technology, the purpose of this invention is to provide a kind of bonding machine and welding gun thereof that has the rivet welding function, be beneficial to improve welding efficiency, prevent workpiece deformation, reduce the cost of manufacture of rivet welding nail, save material and cut down the consumption of energy, the standard of control welding adapts to different welding work pieces.

For achieving the above object, the technical solution used in the present invention provides a kind of bonding machine that has the rivet welding function, it includes the casing of bonding machine, and the input system control circuit that is used to introduce welding machine electric power is housed in described casing, and a control circuit of described control circuit includes the input attaching plug, feed cable, input power supply quick plug, the quick socket of input power supply, main power switch, the main power source contactor, the main power source isolating transformer; The secondary control circuit of control circuit includes secondary welding negative pole cable socket, secondary welding negative pole cable plug, secondary welding negative pole coupling arrangement, secondary electrode cable socket, secondary welding electrode cable plug, secondary control integrated circuit; Also comprise the recharging control circuit that contains charging main circuit control circuit and charging circuit control integrated circuit, wherein: also be connected to the big or small standard control circuit of welding in the secondary control circuit loop of the control circuit of this bonding machine, this circuit is adjusted the standard of welding; The big or small standard control circuit of described welding comprises big or small standard gauge tap, weld little standard control relay and discharge buffer relay, the pre-conducting resistance of discharging thyristor, when big or small standard gauge tap is allocated to big welding conditions, the common terminal of size standard gauge tap is connected to described charging control circuit positive pole, the normally closed point of size standard gauge tap is connected to an end of big standard indicator lamp, the other end of big standard indicator lamp is connected to secondary control circuit negative pole, so big standard indicator lamp gets electric lighting, to show big standard welding job state; When size standard gauge tap is allocated to the little specification condition of welding, normally opened contact by the slow-operating relay in the secondary control circuit of control circuit is connected with little standard relay coil one end of welding, the normally opened contact other end of the slow-operating relay in the secondary control circuit of control circuit is connected with the control circuit negative pole, the other end that welds little standard relay coil is connected with the normally opened contact of big or small standard gauge tap, the common terminal of welding little standard gauge tap is connected with the positive pole of secondary control circuit, welding little standard relay normally open contact one end is connected with the discharging thyristor negative electrode, welding the little standard relay normally open contact other end is connected with pre-conducting resistance one end of discharge, the pre-conducting resistance other end that discharges is connected with charging main circuit negative pole, and big or small welding conditions are changed.

A kind of welding gun that has the bonding machine of rivet welding function also is provided, and this welding gun comprises housing, the rifle head that interior rifle body is housed, and wherein: rifle body inside is provided with semi-automatic tip locking device in described, is provided with switching device on the handle portion of described welding gun housing; The external screw thread that described tip locking device includes adjusting push rod one side in the rifle body in a side end of interior rifle body is provided with the fine setting internal thread and is located at matches, passing spring by an end of regulating push rod pushes up to stage clip, the stage clip top is to regulating the nail afterbody, regulating nail one end pushes up to the regulating sleeve afterbody, regulating sleeve and push rod are by being threaded, screw in adjusting nut on the screw thread of push rod, the afterbody of regulating sleeve is provided with an oval pin-and-hole, promote built-in back, and the back is promoted with spring leaf one end and is connected for the card shape, and push rod inserts tip inside center place, an end of rifle body in tip inserts, the leading section of interior rifle body is a vertebra shape external screw thread, and is after tip inserts, fastening by locknut; On the handle portion of welding gun housing, be provided with the switching device that has microswitch, described switching device includes the switch connecting plate, and be connected with positive stop block, plate machine top is connected with the transmission mechanism of tape backspacing tooth piece, described transmission mechanism include with after move tooth piece meshed gears, gear is meshed with tooth bar on being located at interior rifle body, after move gear the bottom be provided with stage clip, the top of welding gun housing is equipped with the control that has joystick and is dialled sour jujube, control dial sour jujube with after move the tooth piece and match.

Effect of the present invention is that this rivet welding machine can be at A3, stainless steel, aluminium alloy, rapid welding on the metal such as fine aluminium, copper, its welding manner has the efficient height, prevent unnecessary welding work pieces distortion, make the workpiece good looking appearance after the welding, and operation that need not the postwelding grinding, operating efficiency improves about 3 times, and the material consumption of used rivet welding nail has reduced by 50%, a large amount of high-quality steel have been saved, the cost of welding is about 20% of former mode, and can't finish on the product of technological requirement at other many welding manners, can successfully implement welding.

Description of drawings

Fig. 1 is a bonding machine electrical block diagram of the present invention;

Fig. 2 is a welding gun structural representation of the present invention;

Fig. 3 is a lance body structure decomposing schematic representation of the present invention.

Critical piece sequence number among the figure:

1, welded case 2, postioning abutment 3, switch connecting plate 4, switch

5, regulate push rod 6, bonnet 7, plate machine 8, after move the tooth piece

9,18, sour jujube is dialled in stage clip 10, guide pin bushing 11, gear 12, control

13, promote spring 14, tooth bar 15, inner chamber body 16, back

17, spring leaf 19, adjusting nail 20, locknut 21, regulating sleeve

22, adjusting nut 23, push rod 24, tip 25, inner chamber body guide pin bushing

26, cover 27, rifle head 28, reference column 29, collector ring are mended in insulation

30, collector ring pin 31, current collection battle pin mother 32, copper sheathing 33, welding cable

34, joystick

The specific embodiment

Reaching embodiment in conjunction with the accompanying drawings is illustrated bonding machine and the welding gun thereof that has the rivet welding function of the present invention.

As shown in Figure 1, originally the bonding machine that has the rivet welding function is direct discharge-type capacitance energy storage rivet welding machine, the primary circuit of this welding machine control circuit is to be by input attaching plug 35 by control circuit, feed cable 36, input power supply quick plug 37, the quick socket of input power supply, main power switch K1, main power source contactor CJ1, main power source isolating transformer B1, the recharging control circuit, described control circuit comprises: charging main circuit control circuit I2, charging circuit control integrated circuit, secondary welding negative pole cable socket G, secondary welding negative pole cable plug 40, secondary welding negative pole coupling arrangement 41, secondary electrode cable socket O, secondary welding electrode cable plug 38, secondary control integrated circuit, be connected to the big or small standard control circuit of welding in this welding machine secondary control circuit loop, its circuit is adjusted the standard of welding, and the big or small standard control circuit of described welding comprises big or small standard gauge tap K2, weld little standard control relay J4 and discharge buffer relay J 3, the pre-conducting resistance R17 of discharging thyristor BG1.When big or small standard gauge tap K2 is allocated to big welding conditions, size standard gauge tap K2 common terminal is connected to the charging control circuit positive pole, the normally closed point of size standard gauge tap K2 is connected to the end of big standard indicator lamp ZD6-1, the other end of big standard indicator lamp ZD6-1 is connected to secondary control circuit negative pole, so big standard indicator lamp ZD6-1 gets electric lighting, to show big standard welding job state; When size standard gauge tap K2 is allocated to the little specification condition of welding, normally opened contact J3-1 by the slow-operating relay J3 in the secondary control circuit of control circuit is connected with little standard relay J 4 coils one end of welding, the normally opened contact J3-1 other end of slow-operating relay J3 in the secondary control circuit of control circuit is connected with the control circuit negative pole, the other end that welds little standard relay J 4 coils is connected with the normally opened contact K2-2 of big or small standard gauge tap K2, the common terminal of size standard gauge tap K2 is connected with the positive pole of secondary control circuit, welding little standard relay J 4 normally opened contact J4-1 one end is connected with the discharging thyristor negative electrode, welding the little standard relay J 4 normally opened contact J4-1 other ends is connected with pre-conducting resistance R17 one end of discharge, the pre-conducting resistance R17 other end that discharges is connected with charging main circuit negative pole, thereby has realized the quick conversion of big or small welding conditions.

For discharging thyristor BG1 provides pre-conduction path, make discharging thyristor BG1 shift to an earlier date conducting, this will shorten discharge time greatly, reduce the welding pool degree of depth.Size standard gauge tap K2 normally opened contact is with closure, provide a positive potential path with big or small standard gauge tap K2 for little standard control relay J4 by the control circuit positive pole, in welding job, little standard control relay J4 is connected to the Chang Kaiduan of big or small standard gauge tap K2, therefore can't obtain the work cathode voltage, not adhesive of little standard control relay J4, its normally opened contact J4-1 disconnects pre-conducting resistance R17 with discharge controllable silicon BG1 negative electrode, do not carry out pre-conducting because of discharge controllable silicon BG1 like this, so welding is elongated discharge time, welding pool is darker, has increased weld strength.

Shown in Fig. 2,3, use has the welding gun structure of the bonding machine of rivet welding function: comprise welding gun housing 1, interior rifle body 15, rifle head 27, be provided with semi-automatic tip locking device in interior rifle body 15 inside, on the handle portion of welding gun housing 1, be provided with switching device, tip locking device rifle body one side that included is provided with the fine setting internal thread and matches with the external screw thread of adjusting push rod 5 one sides, passing spring 13 by an end of regulating push rod 5 pushes up to stage clip 18, stage clip 18 tops are to regulating nail 19 afterbodys, and the stage clip 18 here is interchangeable with the position of regulating nail 19.Regulating nail 19 1 ends pushes up to regulating sleeve 21 afterbodys, regulating sleeve 21 and push rod 23 are by being threaded, screw in adjusting nut 22 on the screw thread of push rod 23, the afterbody of regulating sleeve 21 is provided with an oval pin-and-hole, and built-in back promotes 16, back distribution 16 is connected for the card shape with spring leaf 17 1 ends, push rod 23 inserts tip 24 inside center places, an end of rifle body 15 in tip 24 inserts, and the leading section of interior rifle body 15 is a vertebra shape external screw thread, after tip 24 inserts, fastening by locknut 20.When not working, tip 24 is at push rod 23, regulating sleeve 20 with regulate under the pressure effect that nail 19 is subjected to stage clip 18 tip 24 inboard roof pressure spreadings so that the rivet welding that is installed is followed closely, when work, move behind interior rifle body 15 pressurizeds, cause shell fragment 17 compressive deformations, promote to move after the back promotes 16, move after causing push rod 23, so tip 24 is held tightly under flexible effect automatically, from to guarantee that the weldering nail is connected with good electrical between the tip, so that weld smoothly.

On the handle portion of welding gun housing 1, be provided with the switching device that has microswitch, switching device includes switch connecting plate 3, and be connected with positive stop block 2, plate machine 7 tops are connected with the transmission mechanism of tape backspacing tooth piece 8, transmission mechanism include with after move tooth piece 8 meshed gears 11, gear 11 is meshed with tooth bar 14 on the interior rifle body 15 again, after move tooth piece 8 the bottom stage clip 9 is arranged, the top of welding gun housing 1 is equipped with the control that has joystick 34 and is dialled sour jujube 12, control dial sour jujube 12 with after move tooth piece 8 and match.

At this moment reference column 28 1 ends of this welding gun are screwed in rifle head 27 fronts of the body of a gun, to guarantee that tip 24 is with vertical by weldering mother metal solder side, the inboard insulation sleeve 26 that embeds of rifle head is with rifle body in guaranteeing 15 and 27 insulation of rifle head, and rifle body guide pin bushing 25 is slidingly matched with interior rifle body 15 formation in insulation sleeve 26 inboard embeddings.Interior rifle body one side has the fine setting internal thread to match with the external screw thread of regulating push rod 5 one sides, peak at adjusting nail 19 afterbodys by regulating push rod 5 one ends, regulate nail 19 and be pressed in stage clip 18 1 sides, stage clip 18 withstands on an end of regulating push rod 5, regulate nail 19 and withstand on regulating sleeve 21 afterbodys, regulating sleeve 21 is threaded with push rod 23 usefulness, screw in adjusting nut 22 between push rod 23 screw threads, after set up the position, push rod 23 and regulating sleeve 21 are locked, regulating sleeve 21 afterbodys are an oval pin-and-hole, built-in back promotes 16, and back distribution 16 is done the card shape with spring leaf one end and is connected, and push rod 23 inserts tips 24 inside center sides, rifle body 15 1 ends in tip 24 inserts, interior rifle body 15 front portions are vertebra shape external screw thread, after tip 24 inserts, by locknut 20 lockings.When the rivet welding rifle was not worked, tip 24 was subjected under the pressure effect of stage clip 18 with adjusting nail 19 at push rod 23, regulating sleeve 20, with tip 24 inboard roof pressure spreadings, so that be installed the rivet welding nail.

When this welding gun work, move behind interior rifle body 15 pressurizeds, cause spring leaf 17 compressive deformations, promote to move after the back promotes 16, move after causing push rod 23, so tip 24 is held tightly under self flexible effect automatically, thereby guarantee the excellent electric contact between weldering nail and the tip, so that welding smoothly.At this moment sour jujube 12 is dialled in the control on the rivet welding rifle and be allocated to little standard, moving tooth piece 8 after making is pushing away on the stage clip 9 under the effect, with gear 11 interlock mutually, the rivet welding rifle vertically is pressed on the welded piece, pulls plate machine 7 and make and move behind the switch gusset piece 3, drive positive stop block 2 and move down, throw off spacing state, simultaneously since after move tooth piece 8 and travel forward, promote gear 11 and rotate, make tooth bar 14 drive in rifle body 15 move backward.

Owing to move behind the interior rifle body 15, make spring leaf 17 compressive deformations.Promote the back and promote 16 and move backward, move after driving regulating sleeve 21, and move after driving push rods 23 by regulating sleeve 21, make tip 24 madial wall central sides and push rod 23 disengage, tip 24 is held the fastening contact platform that rivet welding is followed closely tightly automatically under self flexible effect.Owing to move after interior rifle body 15 continues, this moment, rivet welding screw top portion and welded piece disengaged, this moment, the plate machine 7 of this welding gun continued the back pressure, move the front end of gear 8 after making, throw off with gear 11, under the pressure effect of spring 13, rifle body 15 reaches in promoting, tip 24 is contacted fast with by the weldering mother metal with the rivet welding nail, and discharge is welded.When using big standard rivet welding, sour jujube 12 is dialled in big or small standard control remove in big regulating position, move tooth piece 8 because the effect of sour jujube 12 is dialled in control after making, disengage with gear 11.During 7 work of plate machine, interior rifle body 15 can not move backward, and the rivet welding nail is not done motion backward, so welding is elongated discharge time, welding pool is darker, has increased weld strength, but be the discharge time of this kind welding in 10ms, can not exert an influence to welding job.

Above-mentioned by the quick supply socket CZ1 of quick feed cable plug 37 insertions, by feed cable 36 feed cable plug 35 is inserted supply socket 34, open main power switch K1, main power transformer B1 gets electric, and the secondary L2L3L4 of main power transformer produces induced voltage.Under the control of charging control integrated circuit I3, charging main circuit control circuit I2 charges to energy-storage capacitor C1.Adjust charging and adjust potentiometer W1,, take out a voltage signal, compare from the reference potential of establishing charging control integrated circuit I3 is inner from adjusting potentiometer W1 center head and control circuit negative pole under the dividing potential drop effect of divider resistance R11 and divider resistance R13.When reaching predetermined value, the triggering signal of charging main circuit control circuit is blocked.According to by the actual requirement of the workpiece of rivet welding, the welding conditions of butt welding machine are adjusted.It welds big or small standard control circuit and comprises big or small standard gauge tap K2, weld little standard control relay J4, with discharge buffer relay J 3, the pre-conducting resistance R17 of discharging thyristor BG1, when big or small standard gauge tap K2 is allocated to big welding conditions, size standard gauge tap K2 common terminal is connected to the control circuit positive pole, the normally closed point of size standard gauge tap K2 is connected to the end of big standard indicator lamp ZD6-1, the other end of big standard indicator lamp ZD6-1 is connected to the control circuit negative pole, so big standard indicator lamp ZD6-1 gets electric lighting, to show big standard welding job state.

Because little standard control relay J4 is connected to the Chang Kaiduan of big or small standard gauge tap K2, therefore can't obtain the work cathode voltage, not adhesive of little standard control relay J4, its normally opened contact J4-1 disconnects pre-conducting resistance R17 with discharge controllable silicon BG1 negative electrode, do not carry out pre-conducting because of discharge controllable silicon BG1 like this, so welding is elongated discharge time, welding pool is darker, has increased weld strength.

When size standard gauge tap K2 is allocated to little welding conditions state, size standard gauge tap K2 normally opened contact is with closure, provide a positive potential path with big or small standard gauge tap K2 for little standard control relay J4 by the control circuit positive pole, in welding job, because the closure of slow-operating relay J3, its normally opened contact J3-1 closure, make little standard circuit relay J4 get electric adhesive, little standard circuit relay J4 normally opened contact J4-1 closure, the pre-conducting resistance of will discharging and discharging thyristor negative electrode are connected, and for discharging thyristor BG1 provides pre-conduction path, make discharging thyristor BG1 shift to an earlier date conducting, this will shorten discharge time greatly, reduce the welding pool degree of depth.

Use the welding gun operation of this bonding machine that has the rivet welding function to be achieved in that

Sour jujube 12 is dialled in control on the welding gun be allocated to little standard, move tooth piece 8 after making and pushing away on the stage clip 9 under the effect, with gear 11 interlock mutually.The rivet welding rifle vertically is pressed on the welded piece, pulls plate machine 7 and make and move behind the switch gusset piece 3, drive positive stop block 2 and move down, throw off spacing state, simultaneously since after move tooth piece 8 and travel forward, promote gear 11 and rotate.Making tooth bar 14 drive interior rifle body 15 moves backward, owing to move behind the interior rifle body 15, make spring leaf 17 compressive deformations, promoting back distribution 16 moves backward, move after driving regulating sleeve 21, and, make tip 24 madial wall central sides and push rod 23 disengage by moving behind the regulating sleeve 21 drive push rods 23, tip 24 is held the fastening contact platform of rivet welding nail tightly automatically under self flexible effect.

Because plate machine 7 continues to move backward, after continuing, moves interior rifle body 15, under the effect of switch connecting plate 3, press microswitch 4, the normally opened contact closure of microswitch 4, make the control socket CZ3 on the rivet welding machine be communicated with by the control cable, the control positive source connects diode D9 and rifle head 27, reference column 28 through resistance R 20, diode D7, control socket CZ3 and forms one group of loop with negative pole on the workpiece.This can produce a current potential at resistance R 29 1 ends, because the closure of the normally opened contact CK11 of microswitch 4 is with diode D8, D14 short circuit, make the more former current potential of current potential of resistance R 29 1 ends reduce about 1.2 volts, this current potential is through current-limiting resistance R29 diode D 10, and after adjustable resistance R28 dividing potential drop, input to the inverting input of voltage comparator I6, because this current potential is lower than the in-phase input end current potential, so the output of voltage comparator I6 under the effect of pull-up resistor R36, is exported a high level.This current potential is through current-limiting resistance R37, and diode D12 is transported to the base stage of triode BG6, makes relay J 2 get electric adhesive.The normally opened contact J2-1 closure of relay J 2, the normally-closed contact J2-2 closure of relay J 2.Relay J 3 gets electric adhesive, and the normally opened contact J2-3 of relay J 2 opens, and cuts off the operating voltage of charging control circuit TDA785.The voltage so charging control circuit MTQ90 loses the job, pulse triggering signal disappears, and stops charging.Because relay J 3 adhesives, big or small specification switch K2-2 has applied a positive potential for pre-conducting control relay J4 coil one end again as for little regulating position.The normally opened contact J3-1 closure of relay J 3, relay J 4 gets electric adhesive, the normally opened contact J4-1 closure of relay J 4.Because the adhesive of relay J 3, its normally opened contact J3-2 closure, make the trigger electrode of discharging thyristor BG1 connect current-limiting resistance R16 through the normally opened contact J3-2 of slow-operating relay J3, diode D13 is connected with the control circuit positive pole, discharging thyristor BG1 conducting, make energy on the charging capacitor C1, do pre-arcing through the pre-conducting resistance R17 anticathode of discharging thyristor BG1.This moment, the plate machine 7 of rivet welding machine continued the back pressure, moved the front end and the gear 11 of tooth piece 8 after making and threw off, and under the pressure effect of spring 13, rifle body 15 moves forward fast in promoting, and rivet welding mouth 24 is followed closely with rivet welding and contacted by the weldering mother metal, and discharge is welded.

When using big standard rivet welding, sour jujube 12 is dialled in big or small standard control remove in big regulating position, move tooth piece 8 because the effect of sour jujube 12 is dialled in control after making, disengage with gear 11.Rifle body 15 can not move backward in during 7 work of plate machine, and the rivet welding nail is not done motion backward, and big or small standard gauge tap K2 disconnects relay J 4 coil power supplies simultaneously.The normally opened contact CN1 closure that switch connecting plate 3 presses microswitch 4 is crossed by plate machine 7 back Mobile Communication, the control positive source forms one group of loop through the negative pole that resistance R 20, diode D7, control socket CZ3 connect on diode D9 and rifle head 27, reference column 28 and the workpiece.

Produce a current potential at resistance R 29 1 ends, because the normally opened contact CK11 closure of microswitch 4, with diode D14, the D8 short circuit, make the more former current potential of current potential of resistance R 29 1 ends hang down 1.2V, this current potential inputs to the inverting input of voltage comparator I6 after cut-off current R29 diode D10 adjustable resistance R31 dividing potential drop.The in-phase input end current potential of voltage comparator I6 is higher than the inverting input current potential at this moment, and the output of voltage comparator I6 under the effect of pull-up resistor R36, is exported a high electric screen.This current potential is input to the base stage of triode BG6 through current-limiting resistance R37, diode D12, make relay J 2 get electric adhesive, the normally opened contact J2-1 closure of relay J 2, relay J 2 normally opened contact J2-2 closures, relay G3 gets electric adhesive, relay J 2 normally opened contact J2-3 open, and cut off the operating voltage towards electric control circuit TDA785.So the pulse triggering signal towards circuit MQT90 disappears, and stops charging towards circuit MQT90.This moment, rivet welding screw top portion and welded piece disengaged.

Because relay J 2 adhesives, its normally opened contact J2-2 closure, relay G3 adhesive, make the trigger electrode of discharging thyristor BG1, normally opened contact J3-2 through pre-turn-on relay J3 is connected with diode D13 with current-limiting resistance R16, diode D13 is connected with control circuit is anodal, and the trigger electrode of discharge controllable silicon BG1 obtains triggering signal, discharge controllable silicon BG1 conducting.Through tip 24 rivet weldings nail and quilt weldering mother metal rivet welding, this big standard welding manner because of discharging thyristor BG1 does not carry out pre-conducting, is elongated so weld discharge time with the energy storage energy on the charging capacitor, and welding pool is darker, has increased weld strength.But be the discharge time of this kind welding in 10ms, can not exert an influence to welding job.

This rivet welding machine adopts direct discharge capacity energy storage mode to carry out rivet welding, and its weld signature carries out step-down for the power transformer of at first the power frequency utilization of power being isolated.Change AC energy into direct current energy by rectifier, through control circuit, the storage current potential and the charge waveforms of the energy-storage capacitor of special use are controlled.By accurate welding machine built-in potential signal the charging potential charge waveforms of the storage capacitor of special use is adjusted, and, closed loop compensation is carried out in the influence that energy storage charging potential and current waveform are caused because of the variation of externally fed network.When the energy storage current potential on the energy-storage capacitor reaches predetermined value, welded piece is welded, this welding machine has semi-automatic locking function, so rivet welding nail need not cylindrical body that undergauge section and top connects by one by the striking salient point contact platform with a thickness reference column body and tight portion, decoction cap is formed, after welding is finished, need not through any subsequent treatment.Both attractive in appearance quick, stopped the distortion that should not produce again completely.

Claims

1. bonding machine that has the rivet welding function, it includes the casing of bonding machine, the input system control circuit that is used to introduce welding machine electric power is housed in described casing, a control circuit of described control circuit includes input attaching plug (35), feed cable (36), input power supply quick plug (37), the quick socket of input power supply, main power switch (K1), main power source contactor (CJ1), main power source isolating transformer (B1); The empty system of the secondary of control circuit circuit includes secondary welding negative pole cable socket (G), secondary welding negative pole cable plug (40), secondary welding negative pole coupling arrangement (41), secondary electrode cable socket (0), secondary welding electrode cable plug (38), secondary control integrated circuit; Also comprise the recharging control circuit that contains charging main circuit control circuit (I2) and charging circuit control integrated circuit, it is characterized in that:

Also be connected to the big or small standard control circuit of welding in the secondary control circuit loop of the control circuit of this bonding machine, this circuit is adjusted the standard of welding; The big or small standard control circuit of described welding comprises big or small standard gauge tap (K2), weld little standard control relay (J4) and discharge buffer relay (J3), the pre-conducting resistance (R17) of discharging thyristor (BG1), with big or small standard gauge tap (K2) when being allocated to big welding conditions, the common terminal of size standard gauge tap (K2) is connected to described charging control circuit positive pole, the normally closed point of size standard gauge tap (K2) is connected to an end of big standard indicator lamp (ZD6-1), the other end of big standard indicator lamp (ZD6-1) is connected to secondary control circuit negative pole, so big standard indicator lamp (ZD6-1) gets electric lighting, to show big standard welding job state; When welding big or small standard gauge tap (K2) and being allocated to the little specification condition of welding, normally opened contact (J3-1) by the slow-operating relay (J3) in the secondary control circuit of control circuit is connected with welding little standard relay (J4) coil one end, normally opened contact (J3-1) other end of the slow-operating relay (J3) in the secondary control circuit of control circuit is connected with the control circuit negative pole, the other end that welds little standard relay (J4) coil is connected with the normally opened contact (K2-2) of big or small standard gauge tap (K2), the common terminal of size standard gauge tap (K2) is connected with the positive pole of secondary control circuit, welding little standard relay (J4) normally opened contact (J4-1) end is connected with the discharging thyristor negative electrode, welding little standard relay (J4) normally opened contact (J4-1) other end is connected with discharge pre-conducting resistance (R17) end, the pre-conducting resistance of discharging (R17) other end is connected with charging main circuit negative pole, and big or small welding conditions are changed.

2. the welding gun that has the bonding machine of rivet welding function, this welding gun comprise housing (1), the rifle head (27) that interior rifle body (15) is housed, and it is characterized in that:

Rifle body (15) inside is provided with semi-automatic tip locking device in described, is provided with switching device on the handle portion of described welding gun housing (1); The external screw thread that described tip locking device includes adjusting push rod (5) one sides in the rifle body (15) in a side end of interior rifle body (15) is provided with the fine setting internal thread and is located at matches, passing spring (13) by an end of regulating push rod (5) pushes up to stage clip (18), stage clip (18) top is to regulating nail (19) afterbody, regulating nail (19) one ends pushes up to regulating sleeve (21) afterbody, regulating sleeve (21) and push rod (23) are by being threaded, screw in adjusting nut (22) on the screw thread of push rod (23), the afterbody of regulating sleeve (21) is provided with an oval pin-and-hole, (16) are promoted in built-in back, the back is promoted (16) and is connected for the card shape with spring leaf (17) one ends, push rod (23) inserts tip (24) inside center place, an end of rifle body (15) in tip (24) inserts, the leading section of interior rifle body (15) is a vertebra shape external screw thread, after tip (24) inserts, fastening by locknut (20);

On the handle portion of welding gun housing (1), be provided with the switching device that has microswitch, described switching device includes switch connecting plate (3), and be connected with positive stop block (2), plate machine (7) top is connected with the transmission mechanism of tape backspacing tooth piece (8), described transmission mechanism include with after move tooth piece (8) meshed gears (11), gear (11) be located in tooth bar (14) on the rifle body (15) be meshed, after move gear (8) the bottom be provided with stage clip (9), the top of welding gun housing (1) is equipped with the control that has joystick (34) and is dialled sour jujube (12), control dial sour jujube (12) with after move tooth piece (8) and match.

3. according to the described welding gun that has the bonding machine of rivet welding function of claim 2, it is characterized in that: described tip (24) is the parts that metal thermal spraying is handled.