CN102717180B - Spot-welding electrode protector capable of changing gasket rapidly - Google Patents
Spot-welding electrode protector capable of changing gasket rapidly Download PDFInfo
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- CN102717180B CN102717180B CN201210170194.0A CN201210170194A CN102717180B CN 102717180 B CN102717180 B CN 102717180B CN 201210170194 A CN201210170194 A CN 201210170194A CN 102717180 B CN102717180 B CN 102717180B
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Abstract
The invention discloses a spot-welding electrode protector capable of replacing a gasket rapidly. The spot-welding electrode protector comprises an inner bracket, an outer bracket, two wheel discs arranged coaxially, and two sets of ratchet-and-pawl mechanisms which are coaxially arranged together with the wheel discs and have secondary speed regulating functions; arc-shaped inserting slots used for inserting and fixing copper gaskets are arranged on the inner sides of the two turning wheels; the inner bracket is provided with support frames for supporting the ratchet-and-pawl mechanisms, the outer bracket drives pawl parts to move, ratchet wheels drive the turning wheels to rotate, and the stepping speed of the copper gaskets is determined by designing the gear numbers of the two ratchet wheels; the inner bracket is fixedly connected with an electrode holding rod, the inner bracket and the outer bracket move relatively, a pressure spring is sheathed on the electrode holding rod, and is supported between the inner bracket and the outer bracket, and the lower ends of the inner bracket and the outer bracket are pressed on the surface of a workpiece when the electrode is pressed; and when the electrode is lifted, the outer bracket is reset by the pressure spring. According to the spot-welding electrode protector, the phenomena of alloying, abrasion, pointed corrosion, heat fatigue and the like of the electrode are reduced, the service life of the electrode is prolonged, the purpose of protecting the electrode is realized, and the copper gaskets can be replaced conveniently and rapidly.
Description
Technical field
The present invention relates to a kind ofly for improving the device in spot-wedling electrode life-span, relate in particular to a kind of spot welding electrode protector.
Background technology
At present, in the industries such as modern Aviation, automobile and household electrical appliances, antirust ability better, the galvanized steel plain sheet of high life and the application of aluminium alloy plate increasing.Due to a large amount of thin-slab structures that adopt, when welding, the general spot-welding technology that adopts obtains good welding quality.
In pinpoint welding procedure, the major function of spot-wedling electrode is transmission current, pressurization and heat radiation, welding current when spot welding can be up to thousands of to tens thousand of peaces, electrode pressure can reach hundreds of MPa, electrode head diameter increases the increase with electrode service time, thereby can cause spot welding time, current density declines and the spot size forming is reduced, intensity declines, as the automobile industries in a large amount of use resistance spot weldings, generally body of a motor car need weld 5000-6000 point, but existing spot-wedling electrode once can only weld 500 left and right, rebuild frequently and change electrode and reduced production efficiency, improve production cost, therefore, become the important indicator of weighing its point quality and weldability electrode life.So in the urgent need to carrying out about the research that extends aspect electrode life.
People mainly improve the life-span of spot-wedling electrode from following three aspects:.The one, study novel spot-wedling electrode material; The 2nd, select the good welding material of weldability; The 3rd, improvement Welding and equipment.Being all to set about from electrode itself to the research of electrode at present, is all the life-span of improving electrode material itself, does not fundamentally solve the problem of export license.
Publication number is CN101081456, in the Chinese invention patent that its open day is on December 5th, 2007, a kind of lifetime of resistance spot welding electrode device for prolonging is disclosed, as shown in Fig. 1-1, Fig. 1-2 and Fig. 1-3, this device comprises traversing carriage 6, upper bracket 5, between upper traversing carriage 6 and upper bracket 5 for being flexibly connected; Lower carriage 16 and lower traversing carriage 12 are also flexible connection between them; Upper main shaft 3 and lower main axis 18, be contained in respectively the spring between upper and lower main shaft 3,18 and upper and lower support 5,16; Flywheel 9 and lower flywheel 19 on arc; Upper ratchet mechanism 1 and bottom ratchet wheel mechanism 13; Lay respectively at the copper sheet on upper and lower flywheel 9,19; Upper linkage and lower link mechanism; Upper hitch gear and lower draw-bar mechanism.Above-mentioned lifetime of resistance spot welding electrode device for prolonging exists complex structure, volume large, and detailing is unreasonable, for example: and step count set inaccuracy, causes thus and cannot attach it in corresponding equipment.
Publication number is CN102019499A; in the Chinese invention patent that its open day is on April 20th, 2011, another lifetime of resistance spot welding electrode device for prolonging is disclosed; as shown in Fig. 2-1, Fig. 2-2 and Fig. 2-3; this device protected location identical by two groups of structures and that fix respectively upper and lower electrode forms; protected location comprises stake body, and one end of stake body is provided be fixedly connected with an electrode and traversing carriage moving up and down; The bottom of stake body is door word framework, in door word framework, is provided with inner support moving up and down, and the bottom of door word framework arranges base, and the coated on bottom side of base is covered with insulating coating; In inner support, be provided with a transverse axis, be fixed with a pair of gear on transverse axis, have removable sheet metal, its both sides are the tooth bar coordinating with a pair of gear; A pair of gear is provided with ratchet and pawl arrangement, and the ratchet in ratchet and pawl arrangement is connected with stake body by extension spring, and the pulling force of extension spring is pressed on the gear teeth of ratchet the ratchet moment; Ratchet and pawl arrangement drives two gears to rotate, and two gear driven sheet metals move.There are some problems in above-mentioned spot welding electrode protector, the machine center of this device and electrode, not on an axle, easily occur the phenomenon of blocking when spot welding.
Summary of the invention
For above-mentioned prior art, the invention provides a kind of spot welding electrode protector of fast changeable pad, not only can reduce the alloying of electrode; wearing and tearing, pitting corrosion and heat fatigue etc., the life-span of improving electrode; realize the object of guard electrode, and change copper sheet easily and fast.
In order to solve the problems of the technologies described above, the technical scheme that the spot welding electrode protector of fast changeable pad of the present invention is achieved is: comprise support arm, inner support, coaxial two wheel discs that arrange and have the ratchet and pawl arrangement of secondary speed-regulating function with two covers of the coaxial setting of wheel disc; Between two wheel discs, be fixed with copper sheet, described inner support is provided with to support the support frame of described ratchet and pawl arrangement, described support arm drives the motion of pawl component in ratchet and pawl arrangement, ratchet in described ratchet and pawl arrangement drives wheel disc to rotate, and determines the stepping rate of copper sheet by designing the number of teeth of two ratchets; Described inner support and electrode clamping rod are connected, the relatively described support arm of described inner support can move up and down, and the upper cover of described electrode clamping rod has compression spring, described compression spring to be supported between described inner support and support arm, in the time that electrode is depressed, the lower end of described inner support is pressed on surface of the work; In the time that electrode rises, by compression spring, inner support is lifted, thereby make the lower end of inner support depart from surface of the work; Described inner support comprises the snap ring at top and the scaffold of bottom, described snap ring is in order to be fixed on inner support on electrode clamping rod, between described snap ring and described scaffold, be connected with two support arms, described scaffold is used for installing the axle of ratchet and wheel disc, described support frame comprises the gripper shoe of door type frame and both sides, and the level board of described door type frame is provided with in order to pass through the first through hole of electrode; Two wheel discs are located in described door type frame together with copper sheet wherein, and the ratchet in two cover ratchet and pawl arrangements is located at respectively in the space between door type frame outside and gripper shoe.
Compared with prior art, the invention has the beneficial effects as follows:
Because the damage of top electrode wants serious many compared with bottom electrode, so, the present invention be directed to a kind of protective device of top electrode; its main body is made up of inside and outside support, and to be wherein fixed on electrode clamping rod upper for inner support, and inside and outside support can relative motion; in the time that electrode presses down, support arm first contacts workpiece, then; inner support continues to press down, and then, copper sheet is pressed on workpiece; meanwhile, electrode is pressed on copper sheet, completes a postwelding; electrode is regained, and relies on compression spring that interior support arm is resetted.
On inner support, be useful on the axle that a pair of wheel disc is installed, be fixed with a copper sheet on wheel disc, copper sheet is inserted in the slot of two wheel discs, and copper sheet is fast changeable.Copper sheet is fixed along the edge of wheel disc, and rotate along with the rotation of wheel disc, wheel disc is driven by axle, axle is driven by ratchet and pawl arrangement, ratchet and pawl arrangement comprises two ratchets with secondary speed governing, can, according to the different assembly of the ratchet number of teeth and ratchet length, make copper sheet according to designing requirement stepping.
Spot welding electrode protector of the present invention; between electrode and workpiece, add one deck copper sheet; replace the loss of electrode with the consumption of copper sheet; the results showed; the cut that electrode tip produces when copper sheet is had to a little physical friction and experiment final stage copper sheet during by burn-through electrode be stained with the aluminium of a little; the situation that electrode does not almost damage; especially to adopt the welding quality of red copper relatively good; and not with electrode reaction; therefore; can make electrode almost not be subject to loss completely, electrode zero loss, thus solve the technical problem of guard electrode.Apparatus of the present invention simple in structure, volume is little, easily implements, and has solved the stuck phenomenon not causing on an axle because of electrode and machine center.And easy to make, cost is low.
Brief description of the drawings
Fig. 1-1st, in prior art a kind of electrode device for prolonging be connected with top electrode part assembling schematic diagram;
Fig. 1-2 is be connected with the top electrode assembling schematic diagram of part of the device seen from rear portion, Fig. 1-1;
Fig. 1-3rd, installs the assembling schematic diagram of the part that is connected with bottom electrode shown in Fig. 1-1;
Fig. 2-1st, the front view of spot welding electrode protector of the present invention (compression spring 103 is not housed);
Fig. 2-2nd, the top view of spot welding electrode protector shown in Fig. 2-1 (compression spring 103 is not housed);
Fig. 2-3rd, the rearview of spot welding electrode protector shown in Fig. 2-1;
Fig. 2-4th, the end of wheel disc 109 shown in Fig. 2-1 is to view;
Fig. 3-1st, the front view of pawl component 105 shown in Fig. 2-1;
Fig. 3-2nd, the top view of pawl component 105 shown in Fig. 3-1;
Fig. 3-3rd, the A-A cutaway view of pawl component 105 described in Fig. 3-2;
Fig. 4-1st, the front view of inner support 101 shown in Fig. 2-1;
Fig. 4-2nd, the side view of inner support 101 shown in Fig. 4-1;
Fig. 4-3rd, the top view of inner support 101 shown in Fig. 4-1;
Fig. 5-1st, the simplified schematic diagram of ratchet and pawl arrangement in the present invention;
Fig. 5-2nd, in the present invention, the end of a ratchet is to view;
Fig. 5-3rd, in the present invention, the end of another ratchet is to view;
Fig. 6-1st, the front view of support arm 104 shown in Fig. 2-1;
Fig. 6-2nd, the side view of support arm 104 shown in Fig. 6-1;
Fig. 6-3rd, the top view of support arm 104 shown in Fig. 6-1;
Fig. 6-4th, pawl component is arranged on the schematic diagram on support arm.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail.
As shown in Fig. 2-1, Fig. 2-2 and Fig. 2-3, the spot welding electrode protector of fast changeable pad of the present invention, comprises support arm 104, inner support 101, coaxial two wheel discs 109 that arrange and has the ratchet and pawl arrangement of secondary speed-regulating function with two covers of the coaxial setting of wheel disc; Between two wheel discs 109, be fixed with copper sheet 110, described copper sheet 110 is the copper sheet that 0.5mm is thick.Described inner support 101 is provided with to support the support frame of described ratchet and pawl arrangement, described support arm 104 drives the motion of pawl component 105 in ratchet and pawl arrangement, ratchet in described ratchet and pawl arrangement drives wheel disc 109 to rotate, and determines the stepping rate of copper sheet 110 by designing the number of teeth of two ratchets; Described inner support 101 is connected with electrode clamping rod 103, the relatively described support arm of described inner support 101 can move up and down, on described electrode clamping rod 103, cover has compression spring 102, described compression spring 102 is supported between described inner support 101 and support arm 104, in the time that electrode is depressed, the lower end of described inner support 101 is pressed on surface of the work; In the time that electrode rises, clamping rod drives on inner support 101 and moves, and makes inner support 101 depart from surface of the work, and 102 of compression springs reset support arm 104.
As shown in Fig. 4-1, described inner support 101 comprises the snap ring 1011 at top and the scaffold of bottom, described snap ring 1101 is in order to be fixed on inner support 101 on electrode clamping rod, between described snap ring 1101 and described scaffold, be connected with two support arms 1012, described scaffold is used for installing the axle 111 of ratchet and wheel disc,, axle 111 is arranged in hole 1014, as shown in Fig. 4-1 and Fig. 4-2; Described support frame comprises the gripper shoe 1015 of door type frame 1013 and both sides, and the level board of described door type frame is provided with in order to pass through the first through hole 1016 of electrode, as shown in Fig. 4-3; Two wheel discs 109 are located in described door type frame together with copper sheet 110 wherein, and the ratchet in two cover ratchet and pawl arrangements is located at respectively in the space between door type frame outside and gripper shoe, as shown in Fig. 2-1 and Fig. 4-1.
As in Figure 2-4, the inner side of two wheel discs 109 is provided with the arc slot for plug-in mounting fixing copper sheet 110.As shown in Fig. 5-1, the ratchet and pawl arrangement with secondary speed-regulating function comprises the first ratchet 107 and the second ratchet 108 and corresponding combined type ratchet 1052, 1053, the axle 111 of described ratchet and wheel disc and the first ratchet 107 are matched in clearance, the axle 111 of described ratchet and wheel disc and the second ratchet 108 and wheel disc 109 are interference fit, in the time that the first ratchet 107 rotates, the axle 111 of described ratchet and wheel disc does not rotate, in the time that the second ratchet 108 rotates, drive the axle 111 of described ratchet and wheel disc to rotate, then, drive wheel disc 109 to rotate, finally, described wheel disc 109 drives copper sheet 110 to rotate, so that copper sheet 110 reaches step-type motion,
As Fig. 5-2 and Fig. 5-3, the number of teeth of the first ratchet 107 is 10, comprising a tooth that profile of tooth is darker. the number of teeth of the second ratchet 108 is 10, in the time that the long ratchet 1053 in combined type ratchet enters into this darker profile of tooth, shorter ratchet 1052 promotes the second ratchet 108 and rotates the arc length of the tooth of a tooth, and then band moving axis rotates, then wheel disc 109 is driven, wheel disc 109 drives copper sheet 110 to rotate a step-length, can determine by the number of teeth of design ratchet the number of times of getting ready at the same position of sheet metal.
As shown in Fig. 3-1, Fig. 3-2 and Fig. 3-2, described pawl component 105 is combined type pawl structures, comprise connecting plate, there is ratchet 1052,1053 and the handler 1051 of two-stage speed governing, the lateral surface of described support arm 104 is provided with connecting pin 1042 and steady pin 1043, described handler 1051 is connected with described connecting pin 1042, on described steady pin 1043, be fixed with the ratchet spring 1054 being connected with pawl component 105, as shown in Fig. 6-4.
As shown in Fig. 6-1, Fig. 6-2 and Fig. 6-3, described support arm 104 is a door type framework, is provided with two in order to the rectangular channel 1041 by two support arms 1012 on inner support 101 with in order to pass through the second through hole 1046 of electrode on the level board at top; The medial surface of described door word framework is provided with the longitudinal sliding slot 1045 aligning with axle 111 positions of ratchet and wheel disc, move up and down in process at inner support 101, the axle 111 of the cooperation of described support arm 1012 and rectangular channel 1041 and described longitudinal sliding slot 1045 and ratchet and wheel disc coordinates and all plays guide effect.
In spot welding electrode protector of the present invention, the motion process of protected location is:
Spot welding electrode protector of the present invention is fixed on top electrode to the axis of assurance device and the dead in line of electrode.Now, electrode bottom just contacts with sheet metal 110, and when motion, the relative position of electrode and inner support 101 is constant.
As shown in Fig. 2-1 and Fig. 2-2, in the time that electrode is depressed, drive this device to move down, because the sidewall of support arm 104 is longer than the sidewall of inner support 101 lower gate type frames, therefore, first the bottom of support arm 104 contacts workpiece, support arm 104 stops moving down, and now inner support continues to move down, and 104 of support arms move on relatively, in the time that inner support 101 is pressed down to surface of the work, 101 of inner supports stop moving down; Then, energising, completes after welding process, on electrode, moves, and under the effect of compression spring 102, first support arm 104 does not move, and inner support 101 moves up, and in the time that interior support arm 101 relative positions return to initial situation, support arm 104 starts upwards to move.
When support arm 104 contacts after workpiece, move up with respect to inner support 101, now support arm 104 drives pawl component 105 to move up, pawl component 105 moves up with respect to inner support 101, in the time that electrode moves up, under the effect of compression spring, inside and outside support resets, and support arm 104 moves down with respect to inner support 101, pawl component 105 moves down with respect to inner support 101, and the ratchet in pawl component drives ratchet motion.
One embodiment of the present of invention be in pawl component compared with short ratchet pawl 1052 promote first ratchet rotate 10 times, the second ratchet 108 just turns over the arc length of an one tooth,, at the same position of copper sheet 110, makes a call to point 10 times that is, then, copper sheet 110 moves a step-length.
Although in conjunction with figure, invention has been described above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; instead of restrictive; those of ordinary skill in the art is under enlightenment of the present invention; in the situation that not departing from aim of the present invention, can also make a lot of distortion, within these all belong to protection of the present invention.
Claims (5)
1. a spot welding electrode protector for fast changeable pad, comprises support arm (104), inner support (101), coaxial two wheel discs (109) that arrange and has the ratchet and pawl arrangement of secondary speed-regulating function with two covers of the coaxial setting of wheel disc;
Between two wheel discs (109), be fixed with copper sheet (110), described inner support (101) is provided with to support the support frame of described ratchet and pawl arrangement, described support arm (104) drives the motion of pawl component (105) in ratchet and pawl arrangement, ratchet in described ratchet and pawl arrangement drives wheel disc (109) to rotate, and determines the stepping rate of copper sheet (110) by designing the number of teeth of two ratchets;
Described inner support (101) is connected with electrode clamping rod (103), the relatively described support arm of described inner support (101) can move up and down, the upper cover of described electrode clamping rod (103) has compression spring (102), described compression spring (102) is supported between described inner support (101) and support arm (104), in the time that electrode is depressed, the lower end of described inner support (101) is pressed on surface of the work; In the time that electrode rises, by compression spring (102), inner support (101) is lifted, thereby make the lower end of inner support (101) depart from surface of the work; It is characterized in that,
Described inner support (101) comprises the snap ring (1011) at top and the scaffold of bottom, described snap ring (1101) is in order to be fixed on inner support (101) on electrode clamping rod, between described snap ring (1101) and described scaffold, be connected with two support arms (1012), described scaffold is used for installing the axle (111) of ratchet and wheel disc, described support frame comprises the gripper shoe (1015) of door type frame (1013) and both sides, and the level board of described door type frame is provided with in order to pass through first through hole (1016) of electrode; Two wheel discs (109) are located in described door type frame together with copper sheet (110) wherein, and the ratchet in two cover ratchet and pawl arrangements is located at respectively in the space between door type frame outside and gripper shoe.
2. the spot welding electrode protector of fast changeable pad according to claim 1, is characterized in that, the inner side of two wheel discs (109) is provided with the arc slot for plug-in mounting fixing copper sheet (110), the ratchet and pawl arrangement with secondary speed-regulating function comprises the first ratchet (107) and the second ratchet (108), the axle (111) of described ratchet and wheel disc is matched in clearance with the first ratchet (107), the axle (111) of described ratchet and wheel disc is interference fit with the second ratchet (108) and wheel disc (109), in the time that the first ratchet (107) rotates, the axle (111) of described ratchet and wheel disc does not rotate, in the time that the second ratchet (108) rotates, drive the axle (111) of described ratchet and wheel disc to rotate, then, drive wheel disc (109) to rotate, finally, described wheel disc (109) drives copper sheet (110) to rotate, so that copper sheet (110) reaches step-type motion.
3. the spot welding electrode protector of fast changeable pad according to claim 1, it is characterized in that, described support arm (104) is a door type framework, is provided with two in order to the rectangular channel (1041) by upper two support arms of inner support (101) (1012) with in order to pass through second through hole (1046) of electrode on the level board at top; The medial surface of described door word framework is provided with the longitudinal sliding slot (1045) aligning with axle (111) position of ratchet and wheel disc, move up and down in process at inner support (101), the cooperation of described support arm (1012) and rectangular channel (1041) and the cooperation of the axle (111) of described longitudinal sliding slot (1045) and ratchet and wheel disc all play guide effect.
4. the spot welding electrode protector of fast changeable pad according to claim 1; it is characterized in that; described pawl component (105) is combined type pawl structures; comprise connecting plate, there is ratchet (1052,1053) and the handler (1051) of two-stage speed governing; the lateral surface of described support arm (104) is provided with connecting pin (1042) and steady pin (1043); described handler (1051) is connected with described connecting pin (1042), is fixed with the ratchet spring (1054) being connected with pawl component (105) on described steady pin (1043).
5. the spot welding electrode protector of fast changeable pad according to claim 1, is characterized in that, described copper sheet is the copper sheet that 0.5mm is thick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210170194.0A CN102717180B (en) | 2012-05-28 | 2012-05-28 | Spot-welding electrode protector capable of changing gasket rapidly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210170194.0A CN102717180B (en) | 2012-05-28 | 2012-05-28 | Spot-welding electrode protector capable of changing gasket rapidly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102717180A CN102717180A (en) | 2012-10-10 |
| CN102717180B true CN102717180B (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210170194.0A Expired - Fee Related CN102717180B (en) | 2012-05-28 | 2012-05-28 | Spot-welding electrode protector capable of changing gasket rapidly |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5552573A (en) * | 1993-12-08 | 1996-09-03 | The Furukawa Electric Co., Ltd. | Resistance welding process for aluminum and aluminum alloy materials |
| WO2004004961A2 (en) * | 2002-07-03 | 2004-01-15 | Fronius International Gmbh | Electrode protection device, spot-welding tool and resistance welding method |
| CN101081456A (en) * | 2007-07-10 | 2007-12-05 | 天津大学 | Device for prolonging the lifetime of resistance spot welding electrode |
| CN102019499A (en) * | 2010-12-22 | 2011-04-20 | 天津大学 | Spot welding electrode protector |
-
2012
- 2012-05-28 CN CN201210170194.0A patent/CN102717180B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5552573A (en) * | 1993-12-08 | 1996-09-03 | The Furukawa Electric Co., Ltd. | Resistance welding process for aluminum and aluminum alloy materials |
| WO2004004961A2 (en) * | 2002-07-03 | 2004-01-15 | Fronius International Gmbh | Electrode protection device, spot-welding tool and resistance welding method |
| CN101081456A (en) * | 2007-07-10 | 2007-12-05 | 天津大学 | Device for prolonging the lifetime of resistance spot welding electrode |
| CN102019499A (en) * | 2010-12-22 | 2011-04-20 | 天津大学 | Spot welding electrode protector |
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| Publication number | Publication date |
|---|---|
| CN102717180A (en) | 2012-10-10 |
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Granted publication date: 20140709 Termination date: 20200528 |