CN110369846B - Puppet welding mechanism - Google Patents
Puppet welding mechanism Download PDFInfo
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- CN110369846B CN110369846B CN201910698676.5A CN201910698676A CN110369846B CN 110369846 B CN110369846 B CN 110369846B CN 201910698676 A CN201910698676 A CN 201910698676A CN 110369846 B CN110369846 B CN 110369846B
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- 238000003466 welding Methods 0.000 title claims abstract description 172
- 230000007246 mechanism Effects 0.000 title claims abstract description 72
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 42
- 229910052802 copper Inorganic materials 0.000 claims description 42
- 239000010949 copper Substances 0.000 claims description 42
- 230000007704 transition Effects 0.000 claims description 37
- 238000003825 pressing Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 4
- 230000002452 interceptive effect Effects 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
- B23K11/115—Spot welding by means of two electrodes placed opposite one another on both sides of the welded parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/31—Electrode holders and actuating devices therefor
Abstract
The invention discloses a puppet welding mechanism, and belongs to the field of tool clamps of welding production lines. The method comprises the following steps: first base, first cylinder, electrode swing arm, first electrode coupling assembling, a plurality of first electrodes, second base and a plurality of second electrodes. The plurality of second electrodes and the plurality of first electrodes realize welding of welding spots between the first electrodes and the second electrodes. When the puppet welding structure needs to weld a plurality of welding spots at different positions, more first electrodes can be connected by adding a detachable first electrode connection assembly. When the electrode swing arm rotates to a position to be welded, if the first electrode connecting assembly interferes with the positioning mechanism, the interference between the first electrode connecting assembly and the positioning mechanism can be removed to enable the electrode swing arm to pass through, and the electrode swing arm is re-installed and positioned after being moved to the right position, so that the interference between the puppet welding mechanism and the positioning mechanism is avoided, welding of a plurality of welding spots at different positions is realized, and the welding efficiency is improved.
Description
Technical Field
The invention relates to the field of tool clamps of automobile welding production lines, in particular to a puppet welding mechanism.
Background
With the increased competition of the automobile industry, the requirements on the automobile shape are higher and higher, the structure of an automobile body is more and more complex, a plurality of welding clamp positioning mechanisms are required to be used for clamping during machining, so that the welding space is reduced, a common electrode holder interferes with a clamp mechanism in the operation process, the welding operation cannot be performed, and a puppet welding mechanism is required to be used for welding.
Puppet welding is a welding for parts which are not smooth in welding channel on a production line and cannot be welded by a common welding tongs by means of external manual welding. At present, for a welding spot with a small welding space, an existing puppet welding mechanism fixes upper and lower electrodes of an electrode holder on separately arranged auxiliary mechanisms, respectively, and pulls the electrode holder to a position of a part to be welded through the auxiliary mechanisms, thereby completing welding.
When a vehicle body is machined, a plurality of welding spots with different positions often exist, and if a plurality of welding spots are to be welded simultaneously, the assist mechanism of the puppet welding mechanism needs to pull a plurality of electrodes simultaneously, which increases the volume of the assist mechanism and the occupied space.
Disclosure of Invention
The embodiment of the invention provides a puppet welding mechanism capable of improving the welding efficiency of the puppet welding mechanism, and the technical scheme is as follows:
the embodiment of the invention provides a puppet welding mechanism, which comprises:
a first base;
the first air cylinder is positioned on the first base;
one end of the electrode swing arm is hinged with the first base through a first rotating shaft, and one end of the electrode swing arm is hinged with a cylinder rod of the first cylinder through a second rotating shaft;
the first electrode connecting assembly is detachably connected with the electrode swing arm;
a plurality of first electrodes, a first portion of the plurality of first electrodes being connected with the electrode swing arm, a second portion of the plurality of first electrodes being connected with the first electrode connecting assembly, the second portion of the first electrodes being first electrodes of the plurality of first electrodes other than the first portion of the first electrodes;
a second base spaced from the first base;
the plurality of second electrodes are positioned on the second base and correspond to the plurality of first electrodes one to one.
Optionally, the first electrode connecting assembly includes a transition block and a mounting block, the transition block is L-shaped, the transition block includes a first side plate and a second side plate which are vertically connected, the first side plate has at least 2 groups of first threaded holes which are distributed at intervals along a first direction, the first direction is an arrangement direction of the first part of the first electrodes on the electrode swing arm,
each group of the first threaded holes comprise at least 2 first threaded holes, the electrode swing arm is provided with second threaded holes corresponding to the at least 2 first threaded holes, the mounting block is connected with the second side plate of the transition block, and the second part of the first electrodes are mounted on the mounting block.
Optionally, the mounting block is L-shaped, the mounting block includes a first side plate and a second side plate which are vertically connected, the first side plate has at least 2 sets of third threaded holes which are distributed at intervals along a second direction, the second direction is perpendicular to the first direction,
each set of the third threaded holes comprises at least 2 third threaded holes, and the second side plate of the transition block is provided with fourth threaded holes corresponding to the at least 2 third threaded holes.
Optionally, an adjusting groove is formed in the first electrode, the adjusting groove is in a strip shape, the extending direction of the adjusting groove is the same as the extending direction of the first electrode, the electrode swing arm is provided with a fifth threaded hole corresponding to the adjusting groove, the first part of the first electrode is in threaded connection with the electrode swing arm through the adjusting groove and the fifth threaded hole, the second side edge of the mounting block is provided with a sixth threaded hole corresponding to the adjusting groove, and the second part of the first electrode is in threaded connection with the mounting block through the adjusting groove and the sixth threaded hole.
Optionally, the puppet welding mechanism further comprises a second electrode connecting assembly, the second electrode being mounted on the second base by the second electrode connecting assembly, and the second electrode connecting assembly is configured to be capable of adjusting the position of the second electrode in at least one direction.
Optionally, the second electrode connecting assembly includes a position mounting block connected to the second electrode, the position mounting block has an open slot, an opening direction of the open slot is perpendicular to the second electrode, the second base has a seventh threaded hole, and the open slot and the seventh threaded hole have a fastener therein to fix the position mounting block on the second base.
Optionally, the second electrode connecting assembly further comprises a second cylinder, and a cylinder rod of the second cylinder is connected with the second electrode.
Optionally, the puppet welding mechanism further comprises a pressing assembly, the pressing assembly comprises a pressing swing arm and a third cylinder, one end of the pressing swing arm is hinged to the third cylinder, and the pressing swing arm and the second electrode are located on opposite sides of the electrode swing arm.
Optionally, the puppet welding mechanism further comprises a buffer located on the opposite side of the electrode swing arm from the pressing swing arm.
Optionally, the puppet welds mechanism still includes the welding return circuit, the welding return circuit includes first conduction copper bar, second conduction copper bar and welding copper bar, first conduction copper bar with first electrode passes through cable junction, second conduction copper bar with the second electrode passes through cable junction, the welding copper bar with first conduction copper bar with second conduction copper bar is connected, the welding copper bar is located first conduction copper bar with between the second conduction copper bar.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
one end of the electrode swing arm is hinged with the first base through a first rotating shaft, one end of the electrode swing arm is hinged with a cylinder rod of the first cylinder through a second rotating shaft, and the first cylinder is positioned on the first base. The electrode swing arm can rotate around the second rotating shaft relative to the cylinder of the first cylinder, and the electrode swing arm can rotate around the first rotating shaft relative to the first base by controlling the first cylinder.
The first part of the first electrodes are connected with the electrode swing arm, the second part of the first electrodes are connected with the first electrode connecting assembly, and the first electrode connecting assembly is detachably connected with the electrode swing arm. The plurality of second electrodes are positioned on the second base and correspond to the plurality of first electrodes one to one. When the plurality of first electrodes and the plurality of second electrodes are arranged at the welding position, the plurality of second electrodes and the plurality of first electrodes realize welding of welding points between the first electrodes and the second electrodes.
When the puppet welding structure needs to weld a plurality of welding spots at different positions, more first electrodes can be connected by adding the detachable first electrode connecting assembly, when the electrode swing arm rotates to the position to be welded, if the first electrode connecting assembly connected with the first electrode forms interference with the positioning mechanism, the electrode swing arm can pass through by detaching the first electrode connecting assembly interfering with the positioning mechanism, and after the electrode swing arm moves in place, the detached first electrode connecting assembly and the first electrode are installed and positioned, so that interference between the puppet welding mechanism and the positioning mechanism is avoided, welding spots at different positions can be simultaneously welded, and welding efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a front view of a puppet welding mechanism provided in an embodiment of the present invention;
fig. 2 is a schematic partial structure diagram of a puppet welding mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic partial structure diagram of a puppet welding mechanism according to another aspect of the present invention;
FIG. 4 is a schematic view of a partial structure of an electrode swing arm according to an embodiment of the present invention;
FIG. 5 is a schematic partial structure diagram of a puppet welding mechanism according to another aspect of the present invention;
fig. 6 is a schematic partial structure diagram of a puppet welding mechanism in another angle according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a front view of a puppet welding mechanism according to an embodiment of the present invention, and as shown in fig. 1, the puppet welding mechanism includes: the electrode comprises a first base 1, a first air cylinder 4, an electrode swing arm 2, a first electrode connecting assembly 2a, a plurality of first electrodes 3, a second base 6 and a plurality of second electrodes 5.
The first cylinder 4 is located on the first base 1. One end of the electrode swing arm 2 is hinged with the first base 1 through a first rotating shaft A, and one end of the electrode swing arm 2 is hinged with a cylinder rod of the first cylinder 4 through a second rotating shaft B. The first electrode connecting assembly 2a is detachably connected with the electrode swing arm 2. A first part of the first electrodes 3 in the plurality of first electrodes 3 is connected with the electrode swing arm 2, a second part of the first electrodes 3 in the plurality of first electrodes 3 is connected with the first electrode connecting assembly, and the second part of the first electrodes 3 is the first electrodes 3 except the first part of the first electrodes 3 in the plurality of first electrodes 3.
The second mount 6 is arranged spaced apart from the first mount 1. The plurality of second electrodes 5 are located on the second base 6, and the plurality of second electrodes 5 correspond to the plurality of first electrodes 3 one to one.
One end of the electrode swing arm is hinged with the first base through a first rotating shaft, one end of the electrode swing arm is hinged with a cylinder rod of the first cylinder through a second rotating shaft, and the first cylinder is positioned on the first base. The electrode swing arm can rotate around the second rotating shaft relative to the cylinder of the first cylinder, and the electrode swing arm can rotate around the first rotating shaft relative to the first base by controlling the first cylinder.
The first part of the first electrodes are connected with the electrode swing arm, the second part of the first electrodes are connected with the first electrode connecting assembly, and the first electrode connecting assembly is detachably connected with the electrode swing arm. The plurality of second electrodes are positioned on the second base and correspond to the plurality of first electrodes one to one. When the plurality of first electrodes and the plurality of second electrodes are arranged at the welding position, the plurality of second electrodes and the plurality of first electrodes realize welding of welding points between the first electrodes and the second electrodes.
When the puppet welding structure needs to weld a plurality of welding spots at different positions, more first electrodes can be connected by adding the detachable first electrode connecting assembly, when the electrode swing arm rotates to the position to be welded, if the first electrode connecting assembly connected with the first electrode forms interference with the positioning mechanism, the electrode swing arm can pass through by detaching the first electrode connecting assembly interfering with the positioning mechanism, and after the electrode swing arm moves in place, the detached first electrode connecting assembly and the first electrode are installed and positioned, so that interference between the puppet welding mechanism and the positioning mechanism is avoided, welding spots at different positions can be simultaneously welded, and welding efficiency is improved.
In the present embodiment, the second electrode 5 and the corresponding first electrode 3 are configured to extend along the same straight line at the time of welding.
Fig. 2 is a schematic partial structure diagram of a puppet welding mechanism according to an embodiment of the present invention. As shown in fig. 2, the first electrode connection assembly 2a includes a transition block 7 and a mounting block 8. The transition block 7 is L-shaped, and the transition block 7 includes a first side plate 7A and a second side plate 7B which are vertically connected. The first side plate 7A has at least 2 groups of first threaded holes 7A distributed at intervals along a first direction, and the first direction is the arrangement direction of the first part of the first electrodes 3 on the electrode swing arm 2. Each set of first threaded holes 7a includes at least 2 first threaded holes 7a, and the electrode swing arm 2 has second threaded holes (not shown) corresponding to the at least 2 first threaded holes 7 a. The mounting block 8 is connected to the second side plate 7B of the transition block 7, and the second partial first electrode 3 is mounted on the mounting block 8.
The first threaded holes 7a and the second threaded holes of different groups can be used to correspond according to the specific positions of welding spots, the transition block 7 is connected with the electrode swing arm 2 through bolts, and the position of the transition block 7 relative to the electrode swing arm 2 in the first direction is adjusted. The mounting block 8 is connected to the second side plate 7B of the transition block 7, and the second partial first electrode 3 is mounted on the mounting block 8. By adjusting the position of the transition block 7 relative to the electrode swing arm 2 in the first direction, the position of the second partial first electrode 3 connected to the mounting block 8 in the first direction is adjusted, which improves the versatility of the puppet welding mechanism.
Illustratively, the first side plate 7A further has at least 2 first positioning holes 7 b. The electrode swing arm 2 has second positioning holes (not shown) corresponding to at least 2 first positioning holes 7 b. When the transition block 7 is connected with the electrode swing arm 2, the first positioning hole 7b and the second positioning hole can be aligned, and then positioning is performed by the positioning pin, so that the transition block 7 is conveniently connected with the electrode swing arm 2, and the assembly accuracy of the puppet welding mechanism is improved. The first positioning holes 7b may be located between two adjacent sets of the first threaded holes 7 a.
Fig. 3 is a schematic partial structure diagram of a puppet welding mechanism in another angle according to an embodiment of the present invention. As shown in fig. 3, the mounting block 8 is L-shaped. The mounting block 8 comprises a first side plate 8A and a second side plate 8B which are vertically connected, the first side plate 8A is provided with at least 2 groups of third threaded holes 8A which are distributed at intervals along a second direction, and the second direction is perpendicular to the first direction. Each set of the third threaded holes 8a includes at least 2 third threaded holes 8a, and the second side plate 7B of the transition block 7 has fourth threaded holes 7c (see fig. 2) corresponding to the at least 2 third threaded holes 8 a.
According to the specific position of the welding spot, different sets of third threaded holes 8a and fourth threaded holes 7d can be used to correspond to each other, and the mounting block 8 and the transition block 7 are connected by a bolt, so that the position of the second portion of the first electrode 3 in the second direction can be adjusted, and the universality of the puppet welding mechanism is further improved.
Optionally, the first side plate 8A includes at least 2 third positioning holes 8B, and the second side plate 7B of the transition block 7 has fourth positioning holes 7d (see fig. 2) corresponding to the at least 2 third positioning holes 8B. When the installation block 8 is connected with the transition block 7, the third positioning hole 8b and the fourth positioning hole 7d can be aligned, and then positioning is performed by the positioning pin, so that the installation block 8 is conveniently connected with the transition block 7, and the assembly accuracy of the puppet welding mechanism is further improved.
With reference to fig. 2, optionally, the first electrode 3 has an adjustment groove 3a, the adjustment groove 3a is in a strip shape, the extending direction of the adjustment groove 3a is the same as the extending direction of the first electrode 3, the electrode swing arm 2 has a fifth threaded hole 2B corresponding to the adjustment groove 3a, a first portion of the first electrode 3 is in bolted connection with the electrode swing arm 2 through the adjustment groove 3a and the fifth threaded hole 2B, the second side 8B of the mounting block 8 has a sixth threaded hole 8c corresponding to the adjustment groove 3a, and a second portion of the first electrode 3 is in bolted connection with the mounting block 8 through the adjustment groove 3a and the sixth threaded hole 8 c. The extending length of the first part of the first electrode 3 relative to the electrode swing arm 2 in the extending direction can be adjusted by sliding the adjusting groove 3a along the extending direction of the first electrode 3 and then fixedly connecting the first part of the first electrode 3 with the electrode swing arm 2 through a bolt according to the specific position of the welding spot; or, the second partial first electrode 3 and the mounting block 8 are fixedly connected by sliding the adjustment groove 3a along the extending direction of the first electrode 3 and then using a bolt, so as to adjust the protruding length of the second partial first electrode 3 in the extending direction relative to the mounting block 8, thereby ensuring that the puppet welding mechanism meets the requirements of different welding spots.
Fig. 4 is a schematic partial structural diagram of an electrode swing arm according to an embodiment of the present invention. As shown in fig. 4, the electrode swing arm 2 further has a limiting groove 2c corresponding to the first part of the first electrode 3. The slotting direction of the limiting groove 2c is the same as the extending direction of the first electrode 3, and the fifth threaded hole 2b is positioned in the limiting groove 2 c. The first part of the first electrode 3 can be first installed in the corresponding limiting groove 2c, and then bolted through the adjusting groove 3a and the fifth threaded hole 2b, so that the first part of the first electrode 3 on the electrode swing arm 2 is positioned in the extending direction, and the assembly accuracy of the puppet welding mechanism is further improved.
Exemplarily, referring to fig. 2, the mounting block 8 may further have at least two fifth positioning holes 8d, the adjustment groove 3a may be aligned with the at least two fifth positioning holes 8d, and then the positioning is performed by a positioning pin, so that the second portion of the first electrode 3 on the mounting block 8 is positioned in the extending direction, and the assembly accuracy of the puppet welding mechanism is further improved.
Optionally, the puppet welding mechanism further includes a pressing assembly 11, where the pressing assembly 11 includes a pressing swing arm 11a and a third cylinder 11b, one end of the pressing swing arm 11a is hinged to the third cylinder 11b, and the pressing swing arm 11a and the second electrode 5 are located on opposite sides of the electrode swing arm 2. When a plurality of welding points of the vehicle body are welded at the same time, the pressure provided by the first air cylinder 4 to the electrode swing arm 2 is not enough to support the welding pressure provided by the second air cylinders 10 to the second electrode 5, the pressing swing arm 11a rotates relative to the third air cylinder 11b by adjusting the third air cylinder 11b to press the electrode swing arm 2, the pressing force of the welding copper plate 3 on the electrode swing arm 2 is further increased, and the pressure of the first electrode 3 and the welding pressure of the second electrode 5 are balanced.
Illustratively, the electrode swing arm 2 is moved to the welding position, the first electrode 3 is contacted with the workpiece of the vehicle body, the third air cylinder 11b drives the pressing swing arm 11a to press the electrode swing arm 2 to provide enough pressing force, at this time, the electrode swing arm 2 can be regarded as a fixed end, and then the second air cylinder 10 drives the second electrode 5 to move upwards to the working position to provide the required welding pressure. The first air cylinder 4 of the embodiment of the invention is a round air cylinder with the model number of C96S-100, the working air pressure of the air cylinder is 0.4Mpa, and the maximum pressing force which can be provided for the electrode swing arm 2 under the working air pressure is 3000N. The second cylinder 10 selected by the embodiment of the invention can be a straight rod cylinder, and each straight rod cylinder can provide 2048N welding pressure for the second electrode 5 under the working pressure of 0.4 MPa. The third cylinder 11b selected in the embodiment of the present invention is a euro standard cylinder with a cylinder diameter of 80mm, and the maximum pressure that the cylinder can provide for the pressing swing arm 11a is 3500N. The automobile body workpiece in the embodiment of the invention has three welding spots, the puppet welding mechanism drives the three second electrodes 5 to the welding positions simultaneously, the total welding pressure is 6144N, and the pressing force generated by the electrode swing arm 2 and the pressing swing arm 11a is 6500N in total, so that the support of the welding pressure of the three welding spots is satisfied.
Optionally, the puppet welding mechanism further includes a buffer 12, and the buffer 12 and the pressing swing arm 11a are located on the opposite side of the electrode swing arm 2. Illustratively, the damper 12 includes a damper spring 12a and a bracket 12b, the bracket 12b may be fixedly disposed, for example, fixed on the ground, and the damper spring 12a is located between one end of the electrode swing arm 2 and the bracket. When the electrode swing arm 2 is turned over and clamped, the buffer spring 12a can buffer the electrode swing arm 2 when the electrode swing arm 2 is about to contact with a vehicle body workpiece, so that the electrode swing arm 2 is prevented from colliding with the vehicle body plate to cause deformation of the vehicle body plate.
Fig. 5 is a schematic partial structure diagram of a puppet welding mechanism in another angle according to an embodiment of the present invention. As shown in fig. 5, the puppet welding mechanism further comprises a second electrode connection assembly 9, the second electrode 5 is mounted on the second base 6 through the second electrode connection assembly 9, and the second electrode connection assembly 9 is configured to adjust the position of the second electrode 5 in at least one direction. The position adjustment of the second electrode 5 in the direction in which the second electrode 5 extends is realized by providing the second electrode connecting assembly 9; or the position adjustment of the second electrode 5 in the direction perpendicular to the direction in which the second electrode 5 extends is achieved; or the position of the second electrode 5 can be adjusted in the two directions, so that the position requirements of different welding points are met.
Alternatively, the second electrode connecting assembly 9 includes a position fixing block 9a connected to the second electrode 5, the position fixing block 9a having an opening groove 9b, the opening direction of the opening groove 9b being perpendicular to the second electrode 5,
the position of the second electrode 5 in the direction perpendicular to the extending direction of the second electrode 5 can be adjusted according to the specific position of the welding spot through the opening direction of the open slot 9b, so that the second electrode 5 corresponds to different welding spot positions.
The second base 6 has a seventh screw hole 6b, and the opening groove 9b and the seventh screw hole 6b have a fastener therein to fix the position-fixing block 9a to the second base 6. For example, the fastening member may be a bolt corresponding to the seventh threaded hole 6b, and after the second electrode 5 is adjusted to a proper position, the open slot 9b is corresponding to at least two seventh threaded holes 6b on the second base 6, and the position mounting block 9 is fixedly connected to the second base 6 by at least two bolts.
It should be noted that at least two bolts are used to fixedly connect the position mounting block 9 and the second base 6, and the position mounting block 9a can be limited by the groove wall of the abutting open groove 9b while the at least two bolts are fastened. The deflection of the position mounting block 9a due to excessive welding pressure during the welding process can be prevented, and the processing stability of the puppet welding mechanism is improved.
Illustratively, referring to fig. 1, the second base 6 has a transition connection structure thereon, the transition connection structure includes a first transition plate 6b, a second transition plate 6c and a connection plate 6d, and the first transition plate 6b and the second transition plate 6c are disposed at an angle and fixedly connected by the connection plate 6 d. The first transition plate 6b has a seventh screw hole 6b for connection with the position mounting block 9a, and the second transition plate 6c is connected with the second base 6. According to the position requirements of different welding points, a transition connection structure with a first transition plate 6b and a second transition plate 6c which are arranged at different angles can be designed. When the solder joint to specific position need be welded, only need to change corresponding transition connecting block 6a and just can adjust second electrode 5 to needs the welding position, avoid carrying out redesign to second base 6 is whole, reduced the processing cost.
Optionally, referring to fig. 3, the second electrode connecting assembly 9 may further include a second cylinder 10, and a cylinder rod of the second cylinder 10 is connected to the second electrode 5. When welding spots of the car body are welded, the second electrode 5 can be moved in the extending direction by operating the second cylinder 10, and the position requirements of different welding spots are met.
In this embodiment, the second electrode connecting assembly 9 includes both the position mounting block 9a and the second cylinder 10, and the second electrode 5 is simultaneously adjusted in position in the extending direction of the second electrode 5 and in any direction perpendicular to the extending direction of the second electrode 5. In other embodiments, the second electrode connection assembly 9 may include only one of the position mounting block 9a and the second cylinder 10.
For example, the second electrode 5 may be a welding gun, and the second electrode 5 may further have an electrode cap 5a, and the electrode cap 5a is disposed on the second electrode 5. Because the temperature of the contact surface of the electrode and a workpiece is very high during welding, the electrode can be softened, the shape of the welding gun electrode is changed, the high-temperature stability of the electrode is reduced, the loss of the welding gun electrode is caused, and the loss of the welding gun electrode can be effectively reduced by arranging the electrode cap on the welding gun electrode. For example, a common electrode material begins to soften at about 400 ℃, and when 980 ℃ required for nugget formation is reached, the vickers hardness of the electrode material is reduced to about 1/3 of the original hardness, so that the electrode is softer and the loss is increased during welding. The electrode cap 5a made of the dispersion aluminum reinforced copper can overcome the defects, and the electrode cap begins to soften at about 900 ℃, so that the stability of the electrode cap at high temperature is ensured, and the loss is reduced.
Optionally, the puppet welding mechanism further comprises a welding circuit, referring to fig. 1 again, the welding circuit comprises a first conductive copper bar 13, a second conductive copper bar 14 and a welding copper bar 15, the first conductive copper bar 13 is connected with the first electrode 3 through a cable 16 (see fig. 6), the second conductive copper bar 14 is connected with the second electrode 5 through a cable 16, the welding copper bar 15 is connected with the first conductive copper bar 13 and the second conductive copper bar 14, and the welding copper bar 15 is located between the first conductive copper bar 13 and the second conductive copper bar 14. When a puppet welding mechanism is used for welding a welding spot, the vehicle body, the first electrode 3, the first conduction copper bar 13, the welding copper bar 15, the second conduction copper bar 14 and the second electrode 5 form a welding loop, and a welder uses an external welding machine to weld the welding copper bar 15, so as to provide welding current for the welding loop and realize the welding of the vehicle body. Because the welding copper bars 15 are moved to the position far away from the welding spots of the automobile body by using the welding loop, welding personnel can weld the welding spots of the automobile body more conveniently, and the welding efficiency is further improved.
Illustratively, a welder uses a common welding tongs to weld each welding spot of an automobile body in 3S on average, welds complex welding spots for about 4S, and after the puppet welding mechanism is adopted, the welding copper bar 15 connected by the manual welding puppet welding mechanism can realize the welding of the welding spots of the automobile body, the welding time is about 1.5S, 4-1.5S or 2.5S of time can be saved for a single welding spot, and according to the workload that each automobile body of each automobile has 6 welding spots, five thousand production plans are produced every year, and the man-hour can be saved by 2.5 or 6 or 50000 or 750000S every year.
Fig. 6 is a schematic partial structure diagram of a puppet welding mechanism in another angle according to an embodiment of the present invention. As shown in fig. 6, the second electrode connection assembly 9 may further include a cable connection block 5b, for example. The cable connecting block 5b is located between the second electrode 5 and the second cylinder 10, and the cable connecting block 5b is strip-shaped. When it is desired to connect the second copper conducting bar 14 (see fig. 1) to the second electrode 5 through the cable 16, the cable 16 can be kept away from the second electrode 5 by connecting the strip-shaped cable connecting block 5b to the cable 16, so as to avoid the cable 16 from interfering with the positioning mechanism of the jig.
The working process of the puppet welding mechanism provided by the embodiment of the invention is briefly described below with reference to fig. 1 to 6. The method comprises the following steps:
firstly, placing a vehicle body part on a station, and clamping and positioning the vehicle body part through a welding clamp positioning mechanism;
secondly, operating the first air cylinder 4, controlling the electrode swing arm 2 to overturn to the welding position of the vehicle body part, removing the first electrode connecting assembly 2a if the first electrode connecting assembly 2a connected with the first electrode 3 forms interference with the welding fixture positioning mechanism in the overturning process, and installing the first electrode connecting assembly 2a on the electrode swing arm 2 after the electrode swing arm 2 moves to the welding position so as to enable the first electrode 3 to be aligned to the corresponding welding point on the welding position;
thirdly, moving the second electrode 5 to the welding position of the vehicle body part, and enabling the second electrode 5 and the first electrode 3 to be in a straight line in the extending direction;
and fourthly, welding the vehicle body parts through the first electrode 3 and the second electrode 5.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A puppet welding mechanism, comprising:
a first base (1);
the first air cylinder (4), the first air cylinder (4) is positioned on the first base (1);
one end of the electrode swing arm (2) is hinged with the first base (1) through a first rotating shaft (A), and one end of the electrode swing arm (2) is hinged with a cylinder rod of the first cylinder (4) through a second rotating shaft (B);
a first electrode connecting assembly (2 a), wherein the first electrode connecting assembly (2 a) is detachably connected with the electrode swinging arm (2);
a plurality of first electrodes (3), a first part of the first electrodes (3) of the plurality of first electrodes (3) is connected with the swing electrode arm (2), a second part of the first electrodes (3) of the plurality of first electrodes (3) is connected with the first electrode connecting assembly (2 a), the second part of the first electrodes (3) is the first electrode (3) of the plurality of first electrodes (3) except the first part of the first electrode (3), the first electrode connecting assembly (2 a) comprises a transition block (7) and a mounting block (8), the transition block (7) is L-shaped, the transition block (7) comprises a first side plate (7A) and a second side plate (7B) which are vertically connected, at least 2 groups of first threaded holes (7A) are arranged on the first side plate (7A) at intervals along a first direction, and the first direction is the arrangement direction of the first part of the first electrodes (3) on the swing electrode arm (2), each set of the first threaded holes (7 a) comprises at least 2 first threaded holes (7 a), the electrode swing arm (2) is provided with second threaded holes corresponding to the at least 2 first threaded holes (7 a), the mounting block (8) is connected with a second side plate (7B) of the transition block (7), and the second part of the first electrode (3) is mounted on the mounting block (8);
a second seat (6), wherein the second seat (6) is arranged at a distance from the first seat (1);
the second electrodes (5) are positioned on the second base (6), and the second electrodes (5) correspond to the first electrodes (3) one by one.
2. The puppet welding mechanism according to claim 1, wherein the mounting block (8) is L-shaped, the mounting block (8) comprises a first side plate (8A) and a second side plate (8B) which are vertically connected, the first side plate (8A) of the mounting block has at least 2 sets of third threaded holes (8A) spaced apart along a second direction, the second direction is perpendicular to the first direction,
each set of the third threaded holes (8 a) comprises at least 2 third threaded holes (8 a), and the second side plate (7B) of the transition block (7) has fourth threaded holes (7 c) corresponding to the at least 2 third threaded holes (8 a).
3. The puppet welding mechanism according to claim 2, wherein the first electrode (3) has an adjustment groove (3 a), the adjusting groove (3 a) is strip-shaped, the extending direction of the adjusting groove (3 a) is the same as the extending direction of the first electrode (3), the electrode swing arm (2) is provided with a fifth threaded hole (2 b) corresponding to the adjusting groove (3 a), the first part of the first electrode (3) is connected with the electrode swing arm (2) through the adjusting groove (3 a) and the fifth threaded hole (2 b) by bolts, the second side plate (8B) of the mounting block (8) is provided with a sixth threaded hole (8 c) corresponding to the adjusting groove (3 a), the second part first electrode (3) is connected with the mounting block (8) through the adjusting groove (3 a) and the sixth threaded hole (8 c) in a bolt mode.
4. The puppet welding mechanism according to claim 1, further comprising a second electrode connection assembly (9), the second electrode (5) being mounted on the second base (6) by means of the second electrode connection assembly (9), the second electrode connection assembly (9) being configured such that the position of the second electrode (5) can be adjusted in at least one direction.
5. The puppet welding mechanism according to claim 4, wherein the second electrode connecting assembly (9) comprises a position mounting block (9 a) connected to the second electrode (5), the position mounting block (9 a) has an open groove (9 b), the open groove (9 b) has an opening direction perpendicular to the second electrode (5), the second base (6) has a seventh threaded hole (6 a), and fasteners are provided in the open groove (9 b) and the seventh threaded hole (6 a) to fix the position mounting block (9 a) on the second base (6).
6. The puppet welding mechanism according to claim 4, wherein the second electrode connecting assembly (9) further comprises a second cylinder (10), a cylinder rod of the second cylinder (10) being connected with the second electrode (5).
7. The puppet welding mechanism according to any of claims 1 to 6, further comprising a pressing assembly (11), wherein the pressing assembly (11) comprises a pressing swing arm (11 a) and a third cylinder (11 b), one end of the pressing swing arm (11 a) is hinged to the third cylinder (11 b), and the pressing swing arm (11 a) and the second electrode (5) are located on opposite sides of the electrode swing arm (2).
8. The puppet welding mechanism according to claim 7, further comprising a buffer (12), wherein the buffer (12) and the pressing swing arm (11 a) are located on opposite sides of the electrode swing arm (2).
9. The puppet welding mechanism according to any of claims 1 to 6, further comprising a welding circuit, wherein the welding circuit comprises a first conductive copper bar (13), a second conductive copper bar (14), and a welding copper bar (15), the first conductive copper bar (13) is connected to the first electrode (3) through a cable (16), the second conductive copper bar (14) is connected to the second electrode (5) through a cable (16), the welding copper bar (15) is connected to the first conductive copper bar (13) and the second conductive copper bar (14), and the welding copper bar (15) is located between the first conductive copper bar (13) and the second conductive copper bar (14).
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| CN201910698676.5A CN110369846B (en) | 2019-07-31 | 2019-07-31 | Puppet welding mechanism |
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| CN201910698676.5A CN110369846B (en) | 2019-07-31 | 2019-07-31 | Puppet welding mechanism |
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| CN110369846A CN110369846A (en) | 2019-10-25 |
| CN110369846B true CN110369846B (en) | 2021-07-30 |
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| CN113664348A (en) * | 2021-08-30 | 2021-11-19 | 上汽通用五菱汽车股份有限公司 | Split combined puppet welding device |
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| DE102012008831A1 (en) * | 2012-04-28 | 2013-10-31 | Volkswagen Aktiengesellschaft | Joining of components by means of resistance welding |
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