CN1202936C - Spot welding gun with time controller - Google Patents
Spot welding gun with time controller Download PDFInfo
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- CN1202936C CN1202936C CN 00133558 CN00133558A CN1202936C CN 1202936 C CN1202936 C CN 1202936C CN 00133558 CN00133558 CN 00133558 CN 00133558 A CN00133558 A CN 00133558A CN 1202936 C CN1202936 C CN 1202936C
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- timer
- spot
- welding gun
- ring support
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Abstract
The present invention relates to a spot welding gun with a timer, which is comprises an annular support, a main body, a pair of electrode holders at a fixing end and a moveable end, electrodes, an energizing control means and a cylinder device, wherein the annular support is hung on and in a hanging bracket, the main body in the state of penetrating the thickness direction of the annular support is positioned in an opening of the annular support and is arranged in a free turning method around a central axis of the opening, the main body is held by an operator, the electrode holders are arranged at the part of one side of the annular support of the main body, the electrodes are arranged at the front end of the electrode holders, the electrodes can carry out mutual press welding according to the set pressure of the movement of the electrode holder at the fixing end, the energizing between the two electrodes is controlled by the energizing control means, and the electrode holder at the moveable end is driven by the cylinder device.
Description
Technical field
The present invention is relevant spot-welding gun, this spot-welding gun pressurizes on soldered material by electrode, provide big electric current to described electrode in short time, melt, engage welding portion by resistance heating, particularly the present invention relates to the spot-welding gun that has timer that the timer of setting conduction time is equipped with in inside.
Background technology
In the past, a kind of as resistance welded, in order to carry out the welding between the lamellar metallic plate, spot welding is widely used.Particularly, since this spot welding can weld different kinds of metals, heat affecting few, almost can carry out weld job automatically, since do not have the operator individual differences, can obtain even welding result etc., particularly as being applicable to that the excellent technique of auto manufacturing technology automation is by widespread usage.
Electrifying method in the spot welding generally is that at first logical low current carries out preheating, and logical then total current is welded.Here, external power source uses the 400V alternating current of 50-60Hz, voltage about welding current, use the following low-voltage of 10V, for example for carbon steel, use the current value (current value that uses for the high metal of conductivity is bigger) of 10,000 to 5 Wan An training/square centimeters, be set at for example 0.3 second so very short time conduction time.
Therefore, the transformer that transformation is used, the correct timer of determining short conduction time etc. are necessary, but because they have weight, usually they are unloaded down from spot-welding gun, it is first-class to be placed on operating platform as external device (ED), utilizes electric wire to be connected on the spot-welding gun.
As a result, self has lightened spot-welding gun, but above be connected with many electric wires, have the restricted problem of job area.In order to address this problem, if long connection electric wire is set, so particularly, the power line that flows through big electric current becomes quite thick, and becoming is difficult to tractive, produces the new problem that operating characteristics worsens.
Though studied from this viewpoint transformer and timer be contained in the whole bag of tricks in the equipment, for example training type in 2 Wan An can reach the level of about 90kg, even the type of 10,000 6 kiloamperes also approximately can reach the level of 80kg, if hang by means of hanging jig, inertia is big, owing to be difficult to determine correct position, the problem of operating characteristics difference is proposed, wish to improve.Simultaneously, also propose following problem, promptly Qian Hou weight balancing is bad, if keep flat-hand position, the operator must control welding gun itself usually.
Summary of the invention
The present invention proposes for addressing the above problem, and main purpose of the present invention provides the spot-welding gun that has timer, this spot-welding gun structurally inside be equipped with transformer and timer, in light weight, inertia is little, operating characteristics improves.
Simultaneously, other purpose of the present invention provides the spot-welding gun that has timer, and this spot-welding gun weight balancing does not need to be used to keep the external force of posture well, in fact.
In order to solve above-mentioned problem, realize above-mentioned purpose, the spot-welding gun that have timer relevant with the present invention has: hang on suspension bracket, inner rounded ringent ring support; Main body, this main body are in the state that runs through the opening of this ring support on the thickness direction of this ring support, and, freely turn round installation around the central axis of above-mentioned opening, control by the operator; The a pair of arm of stiff end and movable end is arranged on a side of the above-mentioned ring support of described main body; Be installed in the preceding termination electrode of each arm, described electrode according to the motion of movable end electrode tip holder with the fixed mutual crimping of pressure; The driving mechanism controlling the energising controlling organization of switching between above-mentioned two electrodes and drive the movable end electrode tip holder is arranged on aforementioned body, an above-mentioned side and relative opposite side, between ring support is arranged in the middle of both sides; Described energising controlling organization is characterised in that to have the connecting element that is connected with external power source, set the timer of conduction time between two electrodes and current value, adjust the converter coils of electrical current, is the outer power voltage step-down from above-mentioned connecting element input the step-down transformer of control voltage, it is the outer power voltage step-down from the input of above-mentioned connecting element the main transformer of the weldingvoltage of switching between two electrodes, connect the thyristor that disconnects by the welding current that produces in this main transformer by above-mentioned timer.
Above-mentioned driving mechanism in the spot-welding gun that has a timer of the present invention has cylinder unit, be used for be installed in that electrode on the above-mentioned movable end electrode tip holder contacts with electrode on being installed in said fixing termination electrode seat and detaching direction on move this movable end electrode tip holder.
Above-mentioned energising controlling organization in the spot-welding gun that has a timer of the present invention also has protractor that detects above-mentioned thyristor heating temp and the cooling body that cools off above-mentioned thyristor according to the result that this protractor detects.
Above-mentioned timer in the spot-welding gun that has a timer of the present invention is equipped with by the aforesaid operations person operating and setting trigger of above-mentioned conduction time.
The opposite side of the aforementioned body in the spot-welding gun that has a timer of the present invention partly covers fully by cladding element.
Aforementioned body in the spot-welding gun that has a timer of the present invention by and above-mentioned ring support between at least 3 its roller elements being provided with, free rotaring ground supporting is on this ring support.
In the middle of the whole weight of spot-welding gun that has a timer of the present invention, the weight of above-mentioned ring support one side and the weight of opposite side come down to balance.
Above-mentioned movable end electrode tip holder in the spot-welding gun that has a timer of the present invention along with the same direction of its bearing of trend on freely supporting with advancing and retreat.
Said cylinder device in the spot-welding gun that has a timer of the present invention have driving axis along with the unidirectional cylinder of above-mentioned bearing of trend.
Above-mentioned movable end electrode tip holder in the spot-welding gun that has a timer of the present invention at the above-mentioned gusset of aforementioned body around the supporting of deciding bolster free vibration ground.
Said cylinder device in the spot-welding gun that has a timer of the present invention has along the upwardly extending cylinder in side that the bearing of trend with said fixing termination electrode seat intersects.
Description of drawings
Below, be described with reference to the accompanying drawings the embodiment of the spot-welding gun that has timer related to the present invention.
Fig. 1 illustrates the front view that the spot-welding gun that have timer relevant with the present invention is applicable to the embodiment under the C type situation;
Fig. 2 is the right view of formation that the spot-welding gun that has timer of C type shown in Figure 1 is shown;
Fig. 3 illustrates the front view that the spot-welding gun that have timer relevant with the present invention is applicable to the embodiment under the X type situation;
Fig. 4 is the right view of formation that the spot-welding gun that has timer of X type shown in Figure 3 is shown.
The specific embodiment
In the following description, at first, describe with regard to the structure of so-called C type spot-welding gun, then, the structure of the X type spot-welding gun that remarks additionally again.
As depicted in figs. 1 and 2, C type spot-welding gun 10 has the ring support of hanging on the unshowned in the drawings suspension arm 12, as hanging utensil.With this ring support 12 with hang gripping arm 14 and connect as one, this upper end of hanging gripping arm 14 is connected on the not shown suspension arm, spot-welding gun 10 is done as a whole with free attitude suspention.
Above-mentioned ring support 12 roughly forms ring-type, and the circular open 12a of middle body forms in the mode that connects thickness direction.The inner peripheral surface of this opening 12a is formed with switching guide rail (not shown) on one week, switching roller described later like this can contact rotationally.
The opening 12a of this ring support 12 with the state of the thickness direction that connects it, simultaneously, is equipped with main body (installation main body) 16 with the free turn state of central axis around opening 12a.This main body 16 will be described in detail in the back by the situation that the operator directly controls, but under the state that various parts, apparatus are installed, roughly the state of along continuous straight runs extension keeps this attitude, the setting weight balance like this.In other words, just under the state that various parts, apparatus etc. are installed, ring support 12 keeps roughly being vertical state, described ring support 12 is hung hanging on the arm of not showing in the drawings by means of hanging gripping arm 14, and the main body 16 that is installed in here supports pivotally around the approximate horizontal axis.
And this main body 16 has the outer peripheral face part facing to the inner peripheral surface of opening 12a, 3 switchings of axle supporting pivotally roller 18 on this outer peripheral face part.Like this, by means of these 3 switching rollers 18, main body 16 can support pivotally with respect to ring support 12.
Here, as mentioned above, because main body 16 in the opening 12a of ring support 12, connects its thickness direction, divide into the place ahead part 16a that is projected into ring support 12 the place aheads (example) and the rear part 16b that is projected into ring support 12 rears (opposite side) at ring support 12 places.
The bottom of the place ahead part 16a of aforementioned body 16 is fixed with forwards the roughly L-shaped stiff end electrode tip holder 20 of (left among the figure) outstanding state, holds up termination from the top to figure midway.The terminal of this stiff end electrode tip holder 22 with ring support 12 opposing end faces on, first electrode 22 of (among the figure right-hand) outstanding state is installed rearward.
Simultaneously, the top of the place ahead part 16a of main body 16, be supported with roughly linearly movable end electrode tip holder 24, the left and right directions of this movable end electrode tip holder in the figure direction of ring support 12 quadratures (promptly with) extends, and can move along the direction identical with described bearing of trend simultaneously.The front end of this movable end electrode tip holder 24 is equipped with forwards second electrode 26 of (left among the figure) extension state.And, under the state that first electrode 22 and second electrode 26 engage one another, fit in the straight line shape, under the state that starts the aftermentioned driving mechanism, with the fixed mutual pressure welding of pressure.
On the one hand, the top of the part of the adjacent rings support 12 of the rear part 16b of main body 16 is equipped with the cylinder unit 28 that constitutes above-mentioned driving mechanism.Though this cylinder unit 28 is not shown specifically in the drawings, have driving axis along with the i.e. cylinder 30 of horizontal direction among the figure of the same direction of the moving direction of above-mentioned movable end electrode tip holder 24, above-mentioned movable end electrode tip holder 22 is connected to by means of not shown bindiny mechanism on the piston rod of cylinder 30, and described piston rod is not shown in the drawings.
Simultaneously, the bottom of the part of the adjacent rings support 12 of the rear part 16b of main body 16, main transformer 32 is installed, the energising voltage (weldingvoltage, for example 4V) that 32 outer power voltage (input voltage) step-downs from the 400V of connecting element described later of this main transformer are energising between two electrodes 22 and 26.
Simultaneously, the rear part 16b of main body 16 is arranged in than cylinder unit 28 more by the right-hand place of figure, and the timer 34 that is contained in the housing internal state is installed, and this timer is used to set the flow through current value and the conduction time of the welding current between two electrodes 22,26.Top in the figure of this timer 34 is equipped with the operating grip 36 that the operator controls, and the operator introduces the trigger 38 that is installed on this operating grip 36 by operation, can indicate the electric welding time started in timer 34.Promptly, be introduced into from detecting trigger 38, this timer 34 make welding current only in the predefined stipulated time (for example 0.3 second) flow through between two electrodes 22,26 with predefined current value, constitute as control thyristor described later.
Simultaneously, the rear part 16b of main body 16 is arranged in than cylinder unit 28 more by place, figure below, be arranged in zone, dispose: the outer power voltage step-down from the connecting element input is the step-down transformer 40 of control with voltage (for example 24V) than the right-hand place of main transformer 32 more close figure; Be used for current value is adjusted into setting value for example 16, the converter coils 42 of 000A; Thyristor 44 is used for being interrupted the welding current that above-mentioned main transformer 32 produces according to the control of above-mentioned timer 34, the final welding current of flowing through between two electrodes 22,26 of setting; Detect the protractor (thermostat) 46 of the temperature of described thyristor 44; Be used to protect the thyristor protector 48 of this thyristor 44.
Above-mentioned thyristor 44 is power control components of high-velocity electrons noncontacting switch, particularly, is made of SCR (controllable silicon).
Wherein, have the cooling body that is not shown specifically among the figure in described spot-welding gun 10, the logical cooling water of this cooling body cools off, according to the temperature that said temperature device 46 detects, thyristor 44 become fixed temperature, promptly from fixed temperature no longer rise.
And, except the housing that covers timer 34, utilize the rear part 16b of cladding element 50 main body covered 16.Like this, the rear end face of this cladding element 50 is provided with: the connecting element 52 that is connected to the external power source device by means of not shown cable; Be used for providing the cooling water input port 54a and the cooling water outlet 54b that utilizes cooling effect of cooling water to above-mentioned cooling body; Be used for providing the air outlet 56b of compressed-air actuated air-in 56a of work and discharge usefulness to cylinder unit 28.
As mentioned above, among this embodiment, part 16b has at the rear of main body 16: the energising controlling organization, and this energising controlling organization has connecting element 52, timer 34, converter coils 42, step-down transformer 40, main transformer 32, thyristor 44, the thyristor protector 48 that is used to control energising between two electrodes 22,26; And conduct drives the cylinder unit 28 of the driving mechanism of movable end electrode tip holder.As a result, be arranged on the outside with former main transformer and timer, be connected therewith by cable and compare, have the advantage of the installation of being very easy to.
Here, to like this weight that is contained in the structure in the device in the energising controlling organization being tested.
In this embodiment, under following situation, promptly maximum current is the trainings of 2 Wan An, power output is 38kVA, the compressed-air actuated pressure that imports in the cylinder unit 28 is the 5kgf/ square centimeter, is 230kgf by the crimp force between 28 liang of electrodes of described cylinder unit 22,26, and the weight of each parts is:
Main body 16 ... 4.4kg
3 switching rollers 18 ... 0.2kg
Stiff end electrode tip holder 20 ... 3.2kg
Movable end electrode tip holder 24 ... 1.2kg
Step-down transformer 40 ... 1.2kg
Converter coils 42 ... 0.2kg
Other ... about 4kg
Add up to ... about 44kg
The result, with former weight was that the spot-welding gun that the controlling organization of promptly switching on that has timer of 80-90kg loads type compares therewith, weight change is about 1/2nd, as a result, can obtain in operation that inertia is little, operating characteristics improves in this spot-welding gun 10 really, correctly determine effect such as position.
And, with the ring support 12 that is positioned at the hitch point on the suspension arm as supporting-point, be installed in main body 16 the place ahead part 16a element weight and the weight of position and the element of the rear part 16b that is installed in main body 16 is set and position, the just in time balance setting of both flywheel moments is set.As a result, this spot-welding gun 10 is suspended on the not shown suspension arm, and under the free state without any the external force effect, ring support 12 roughly is vertical state, and promptly spot-welding gun 10 itself remains on the posture of extending on the general horizontal direction.Therefore, the operator can operate this spot-welding gun 10 easily, has also obtained the effect that operating characteristics improves from this point.
The present invention is not limited to the foregoing description, obviously, can carry out various distortion in the scope that does not break away from main points of the present invention.
For example, in the foregoing description, though be to be applicable to that with regard to the present invention the situation of C type spot-welding gun describes,, the present invention is not limited to such use, obviously also can be applicable to X type spot-welding gun.
Below, with reference to Fig. 3 and Fig. 4, just be applicable to the situation of X type spot-welding gun, describe other relevant embodiment of the present invention in detail.And the part identical with spot-welding gun in the foregoing description given identical label, and omits explanation.
As shown in Figure 3 and Figure 4, in X type spot-welding gun 10 ', movable end electrode tip holder 24 is by means of the bolster 58 axle supporting freely to rotate of the place ahead part 16a of main body 16.For this reason, stiff end electrode tip holder 20 forms anti-L shaped, and from be bent downwardly midway, first electrode 22 is installed in the front end face (being the lower surface) of this stiff end electrode tip holder 20 downwards with outstanding state.
On the one hand, movable end electrode tip holder 24 forms L shaped, and from be bent upwards midway, second electrode 26 is installed in the front end face (being the upper surface) of this movable end electrode tip holder 24 with outstanding upward state.And, the same with above-mentioned I type, be under the state that engages one another at first electrode 22 and second electrode 26, can aim at.
Simultaneously, among this X type embodiment, drive second electrode 26 that is positioned on the movable end electrode tip holder 24 owing to must keep enough strokes to come and go, cylinder unit 28 is installed in the rear portion of the rear part 16b of main body 16 with the state of driving axis above-below direction in the drawings.For this reason, timer 34 is installed in adjacent rings support 12 parts on the top among the figure of rear part 16b of main body 16.
On the one hand, main transformer 32 be installed in the adjacent rings support 12 of the rear part 16b of main body 16, simultaneously be positioned at timer 34 under part.The result; the same with the situation of I type; be arranged in scope at the rear of main body 16 part 16b, be provided with step-down transformer 40, converter coils 42, thyristor 44, protractor (thermostat) 46, thyristor protector 48 than cylinder unit 28 and main transformer 32 more close figure lower positions.
As mentioned above, in this relevant embodiment of X type, identical with above-mentioned I type, part 16b has at the rear of main body 16: energising controlling organization, this energising controlling organization have and are used to control between two electrodes 22,26 connecting element 52 of switching on, timer 34, converter coils 42, step-down transformer 40, main transformer 32, thyristor 44, thyristor protector 48 etc.; And conduct drives the cylinder unit 28 of the driving mechanism of movable end electrode tip holder.As a result, can obtain effect and the effect same with above-mentioned I type.
As detailed above, although inside configuration is equipped with transformer and timer as described in the present invention, also can provide lightweight, set the spot-welding gun that has timer that inertia is little, operating characteristics improves.
Simultaneously, as described herein, can provide weight balancing good, do not need to keep the spot-welding gun that has timer of the external force of posture in fact.
As detailed above, although inside configuration is equipped with transformer and timer as described in the present invention, also can provide lightweight, set the spot-welding gun that has timer that inertia is little, operating characteristics improves.
Simultaneously, as described herein, can provide weight balancing good, do not need to keep the spot-welding gun that has timer of the external force of posture in fact.
Claims (11)
1. spot-welding gun that has timer has:
Hang on suspension bracket, inner rounded ringent ring support;
Main body, this main body is in the opening of this ring support, is the thickness direction state that runs through this ring support and freely turns round installation around the central axis of above-mentioned opening, controls by the operator;
The a pair of arm of stiff end and movable end is arranged on a side part of the above-mentioned ring support of main body;
Be installed in the electrode of each arm front end, described electrode according to the motion of movable end electrode tip holder with the fixed mutual pressure welding of pressure;
The driving mechanism of controlling the energising controlling organization of switching between above-mentioned two electrodes and driving the movable end electrode tip holder, be arranged on aforementioned body with the relative opposite side of an above-mentioned side, above-mentioned ring support is in the middle of both sides;
It is characterized in that: described energising controlling organization has: the connecting element that is connected with external power source, set the weld interval of switching between two electrodes and the timer of welding current value, adjust the converter coils of electrical current, is the outer power voltage step-down from above-mentioned connecting element input the step-down transformer of control voltage, it is the outer power voltage step-down from the input of above-mentioned connecting element the main transformer of the weldingvoltage of switching between two electrodes, the thyristor that is interrupted the welding current that produces by this main transformer by above-mentioned timer.
2. the spot-welding gun that has timer as claimed in claim 1, it is characterized in that above-mentioned driving mechanism has cylinder unit, be used for be installed in that electrode on the above-mentioned movable end electrode tip holder contacts with electrode on being installed in said fixing termination electrode seat and detaching direction on move this movable end electrode tip holder.
3. the spot-welding gun that has timer as claimed in claim 1 is characterized in that above-mentioned energising controlling organization also has protractor that detects the thyristor heating temp and the cooling body that cools off above-mentioned thyristor according to the result that this protractor detects.
4. the spot-welding gun that has timer as claimed in claim 1 is characterized in that above-mentioned timer is equipped with by the aforesaid operations person operating and setting trigger of above-mentioned conduction time.
5. the spot-welding gun that has timer as claimed in claim 1 is characterized in that the other side of aforementioned body covers fully by cladding element.
6. the spot-welding gun that has timer as claimed in claim 1, it is characterized in that aforementioned body by and above-mentioned ring support between at least 3 its roller elements being provided with, free rotaring ground supporting is on this ring support.
7. the spot-welding gun that has timer as claimed in claim 1 is characterized in that in the middle of the whole weight, and the weight of above-mentioned ring support one side and the weight of opposite side come down to balance.
8. as any one described spot-welding gun that has timer in the claim 1 to 7, it is characterized in that above-mentioned movable end electrode tip holder along with the same direction of its bearing of trend on freely supporting with advancing and retreat.
9. the spot-welding gun that has timer as claimed in claim 8, it is characterized in that the said cylinder device have driving axis along with the unidirectional cylinder of above-mentioned bearing of trend.
10. as any one described spot-welding gun that has timer in the claim 1 to 7, it is characterized in that above-mentioned movable end electrode tip holder supports around deciding bolster free vibration ground at an above-mentioned gusset of aforementioned body.
11. the spot-welding gun that has timer as claimed in claim 10 is characterized in that the said cylinder device has along the upwardly extending cylinder in side that the bearing of trend with said fixing termination electrode seat intersects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00133558 CN1202936C (en) | 2000-11-10 | 2000-11-10 | Spot welding gun with time controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00133558 CN1202936C (en) | 2000-11-10 | 2000-11-10 | Spot welding gun with time controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1353028A CN1353028A (en) | 2002-06-12 |
| CN1202936C true CN1202936C (en) | 2005-05-25 |
Family
ID=4595799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00133558 Expired - Fee Related CN1202936C (en) | 2000-11-10 | 2000-11-10 | Spot welding gun with time controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1202936C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT500757B1 (en) * | 2003-11-25 | 2006-12-15 | Fronius Int Gmbh | POINT WELDING TONGS, ESPECIALLY FOR ROBOT APPLICATIONS |
| CN103464885B (en) * | 2013-09-13 | 2015-08-19 | 江门市保值久机电有限公司 | A kind of Novel electric welding gun |
-
2000
- 2000-11-10 CN CN 00133558 patent/CN1202936C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1353028A (en) | 2002-06-12 |
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Granted publication date: 20050525 Termination date: 20111110 |