CN107097008A - A kind of weld clamp device - Google Patents
A kind of weld clamp device Download PDFInfo
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- CN107097008A CN107097008A CN201710501805.8A CN201710501805A CN107097008A CN 107097008 A CN107097008 A CN 107097008A CN 201710501805 A CN201710501805 A CN 201710501805A CN 107097008 A CN107097008 A CN 107097008A
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- clamping
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Resistance Welding (AREA)
Abstract
The present invention relates to a kind of weld clamp device, including clamping unit, clamping arm unit, constant clamping force control unit, main pin；Clamping arm unit includes the second transmission arm, the first transmission arm；Clamping unit is rotated by main pin and connected, and the second transmission arm is fixedly connected with clamping unit near-end, and the first transmission arm is fixedly connected with the distal end of clamping unit；Constant clamping force control unit has body and expansion link, and expansion link end is rotated with the first transmission arm and is connected, and body is rotated with the second transmission arm and is connected；Positioned at the both sides of main pin, provided with limited block, limited block is used to limit opening angle during clamping device undamped state.The clamping process and release process of constant clamping force control unit of the present invention, the action process of the top and the bottom of clamping unit is all divided into two steps, ingenious in design when completing second step action respectively by being positioned by blessing workpiece and limited block, the degree of accuracy of clamped position is high.
Description
Technical field
The present invention relates to the clamping dress in automobile automatic welding field, more particularly to a kind of welding of automobile automatic laser
Put.
Background technology
In automobile automatic welding field, the welding quality of Laser Welding requires high to the matching between part, during welding
The clamping welding quality stablized between workpiece plays very important effect, and the clamping how stablized workpiece during welding simultaneously disappears
Except matching gap is the difficult point of doorframe laser fusion welding, the clamping mode of current production line is only capable of light source Jiao in Laser Welding manipulator
The artificial arrangement clamping point in front portion of point, and move mode in manipulator welding process when clamping point region weld is slides firmly
Move, welding quality can be caused undesirable.
The complete production procedure of one car as shown in figure 1, wherein formally start production first 8 weeks " pre- volume licensing is whole
Car " manufacture link is the key link before new model starting production, is important bridge of the product design to production.Simultaneously " pre-
Stage also needs to many important vehicles to batch accreditation vehicle " needs to deliver Very Important Person, such as：100000 kilometers of road is durable
Instruction carriage, collision car, Konzern's contrast car, exhibition car, the stiffness test car of dynamic comprehensive experiment and strength test car, leader's examination multiply
Test ride, externally checking car etc..Because the stamping parts in " the pre- batch accreditation vehicle " stage is of low quality, fixture is short delivery cycle,
Matching somebody with somebody for fixture is set low, and vehicle body production quantity is more, and Laser Welding station is the bottleneck station in whole " pre- volume licensing vehicle " stage
(needing to complete the processes such as roof soldering, the soldering of gusset water falling groove, the soldering of bonnet outside plate, gusset door opening melting welding in this station).
At present, the gusset doorframe of domestic most automobiles is all resistance spot welding, and only a small number of producers employ Laser Welding
Connect.For the laser fusion welding technique of inside and outside gusset plate, technical process is typically：1. dolly is pushed away manually and vehicle vehicle body enters laser
Room；2. vehicle body is declined manually, fallen into the positioning unit on flexible locating platform, positioning clamping is carried out to vehicle body, and 3. laser melts
Weldering robot is welded to vehicle body；4. clamping and positioning unit, hand hoisting on vehicle body are opened after the completion of unilateral gusset plate weld
Dolly is accepted after vehicle body, and dolly band vehicle body is hauled out outside laser room together；5. vehicle body is turned after 180 °, then vehicle body is pushed into
Laser room；6. vehicle body is declined manually, fallen into again in the positioning unit on flexible locating platform, locating clip is carried out to vehicle body
Tightly；7. laser fusion welding robot is welded to vehicle body again；8. complete to open clamping and positioning unit on vehicle body after welding, manually
Lifting truck is accepted after vehicle body, is hauled out outside laser room, completes welding.
Clamping device can be on hand installed to complete to clamp and weld by Laser Welding machinery in the prior art at present.But
The device can solve a large amount of C-type clamp dismounting problems to a certain extent, but the product is except expensive, delivery date length, dimension
Repair response not in time, Site Service do not catch up with etc. outside many adverse conditions, product also exist in itself it is many not enough, such as：
1. product slides clamping firmly for single-point before light source focus, it is impossible to ask in the metal plate matching gap for solving Laser Welding starting point
Topic；
2. the curvature adaptive equalization function on side-wall outer-plate surface can not be solved, occurs robot load excessive sometimes and reports
The problems such as police stops line；
If 3. gusset plate Y-direction deviation is larger, batch production scene can only stop line, reprogram to solve clamping problems, otherwise
Robot will be stopped；
4. the output device without constant clamping force, such as welding slag accumulation, robot can alarm and stop in the process of running
Only run, need to stop production carry out manual cleaning；
5. both there is no output strength tunable arrangement, without visual force production device yet；
It is well known that the quality of Laser Welding is high to the matching clearance requirement of metal plate, the fit clearance between steel plate should be protected
Hold between 0.1-0.3mm (0.2mm is optimal), serious spatter will be produced less than this scope, and higher than this model
Enclose, weld seam can be caused insecure, cause the off quality of laser welded seam.
At present can also be by the prior art using the clamping mode of conventional c folder.Enter laser room in vehicle vehicle body
After dropping place, it is both needed to artificial C-type clamp clamping for every sample car and handles nearly 100 minutes, time and effort consuming, this does not enter also including vehicle body
Go out, vehicle body positioning, vehicle body 180 degree rotation, Laser Welding welding etc. other times.And practical laser welding process only needs 10 minutes left sides
The right side can complete processing, and its speed is fast, the advantage of efficiency high is overshadowed because of traditional clamping mode.
How in " the pre- volume licensing vehicle " stage by the innovation to welding assembly tensioning technique come high quality and high efficiency
Completion laser Welding be an extremely urgent job.
The content of the invention
Present invention aim to address the weldering of the metal plate of Laser Welding starting point matching clearance issues and guarantee light source focal point
Gap, 2 points of clampings of disposed at equal distance before and after light source focus, while the hard sliding of clamping head is changed into the scroll bits of roller
Move, both ensure to originate the requirement that commissure matches gap, become again and slide to roll to reduce the fretting wear of face of weld, so that
Improve welding quality.
The present invention takes following technical scheme：
A kind of weld clamp device, including clamping unit, clamping arm unit, constant clamping force control unit 5, main pin 7；Institute
Stating clamping arm unit includes the second transmission arm, the first transmission arm；The clamping unit is rotated by main pin 7 and connected, the second transmission
Arm is fixedly connected with clamping unit near-end, and the first transmission arm is fixedly connected with the distal end of clamping unit；The constant clamping force control
Unit 5 processed has body and expansion link, and expansion link end rotates with the first transmission arm and is connected, and body and the second transmission arm are rotated and connected
Connect；Positioned at the both sides of main pin 7, provided with limited block, the opening when limited block is used to limit clamping device undamped state
Angle.
Further, the clamping arm unit 3 includes the second transmission arm switch block 3.2, the first transmission arm switch block 3.1, arm of force tune
Save part 3.3；First transmission arm, the second transmission arm switch block 3.2,3.1 are hinged by main pin 7；Set on arm of force regulating part 3.3
There is scale, each scale value is corresponded with corresponding clamping force；It can be chosen by the length for adjusting the arm of force regulating part 3.3
The clamping force of adaptation.
Further, the arm of force regulating part 3.3 has adjusting nut and two-way left-hand thread screw structure.
Further, in addition to connection unit 4, the connection unit 4 respectively with constant clamping force control unit 5, folder
Arm unit is fixedly connected.
Further, in addition to spatial attitude balancing unit 6, the spatial attitude balancing unit 6 has extension spring 6.4,
The extension spring two ends are connected with the second transmission arm, the first transmission arm respectively, and extension spring keeps extended state.
Further, the constant clamping force control unit 5 includes cylinder and pressure-reducing valve.
Further, the clamping unit is to roll clamping unit 1, and the plane where workpiece to be clamped is XOY plane, with
The vertical direction of the plane is Z-direction；The clamping unit 1 that rolls has at least two groups rollers for being used for mutually clamping, roller rolling
Dynamic linear velocity direction is along Y-direction.
Further, in addition to curvature compensation unit 2, curvature compensation unit 2 includes swinging block 2.1, roll clamp it is single
Member 1 is fixed on swinging block 2.1, and the swinging center of swinging block 2.1 is along X to setting；Swinging block 2.1 is made by workpiece is clamped
With, can along the swinging center adaptability small size swing.
A kind of method of work of weld clamp device,
Clamping process：Expansion link is ejected, and drives the first transmission arm to be rotated around the first direction of main pin 7, and the first transmission arm is supported
Workpiece is firmly clamped, the first transmission arm stops；Expansion link continues to eject, constant to clamp under the positioning action of clamped workpiece
The body of power control unit 5 drives the second transmission arm to be rotated to second direction, and the second transmission arm props up clamped workpiece；
Release process：Expansion link shrinks, under the body of constant clamping force control unit 5 drives, and the first transmission arm is along the
Two directions are rotated, until the first transmission arm props up limited block, the first transmission arm stops；Expansion link continues to shrink, and drives second to pass
Swing arm is rotated along a first direction around main pin 7, is stopped until expansion link shrinks, and the second transmission arm stops；Wherein, first direction
It is two opposite directions with second direction.
The beneficial effects of the present invention are：
1) clamping process and release process of constant clamping force control unit, the action process of the top and the bottom of clamping unit
All it is divided into two steps, it is ingenious in design when completing second step action respectively by being positioned by blessing workpiece and limited block, clamp
The degree of accuracy of position is high；
2) arm of force regulating part is set in clamping arm unit, it is convenient to carry out arm of force regulation, pass through arm of force regulation directly acquisition pair
The clamping force answered；
3) spatial attitude adjustment unit provides pretension to upper, the first transmission arm, and effective anti-locking apparatus turns clockwise；
4) the final execution unit that clamping unit is clamping device is rolled, acts directly on and clamping action is completed on workpiece,
Clamping effect is preferably, flexible stronger；
5) swinging block of curvature compensation unit is different with the circular arc face curvature for swinging limited block, and the former need to be less than the latter, two
Person is linked together by pin.When face of weld Curvature varying, inside and outside front and rear rolling wheel is with the constraint of mechanical pendulous device
Slight oscillatory is produced, realizes that the adaptive two point of the curvature before and after light source focus is clamped, so that surface irregularity is to be welded
Connect workpiece and be in clamped condition all the time, clamping effect is good, strong adaptability.
6) be particularly suitable for use in the weld clamp process of automobile side coaming.
7) clamping of two clamping parts is controlled simultaneously using the output shaft of a driving part and opened so that clamp knot
Structure is simple so that whole clamping device convenient and reliable operation.
Brief description of the drawings
Fig. 1 is to make car schematic flow sheet.
Fig. 2 is the rolling fastening figure that welding of the invention rolls clamping device.
During Fig. 3 is one embodiment of the invention, welding is clamped state to automobile side coaming with rolling clamping device and shown
It is intended to.
During Fig. 4 is one embodiment of the invention, the welding schematic perspective view for rolling clamping device.
During Fig. 5 is one embodiment of the invention, the structure decomposition figure of clamping unit is rolled.
Fig. 6 is the installation diagram of rolling clamping unit in Fig. 5.
During Fig. 7 is one embodiment of the invention, the structure decomposition figure of curvature compensation unit.
During Fig. 8 is one embodiment of the invention, the schematic top plan view of curvature compensation unit.
During Fig. 9 is one embodiment of the invention, the pie graph of clamping arm unit.
During Figure 10 is one embodiment of the invention, the welding front view for rolling clamping device.
During Figure 11 is one embodiment of the invention, the schematic diagram of clamping arm unit visualization clamping force output.
During Figure 12 is one embodiment of the invention, the structure decomposition figure of connection unit.
During Figure 13 is one embodiment of the invention, the scheme of installation of limited block position.
During Figure 14 is one embodiment of the invention, the pie graph of spatial attitude balancing unit.
Figure 15 is cylinder schematic diagram.
During Figure 16 is one embodiment of the invention, the welding schematic diagram for rolling clamping device open mode.
During Figure 17 is one embodiment of the invention, the welding schematic diagram for rolling gripping means grips state.
Figure 18 is the adaptive fundamental diagram of welding plane.
Figure 19 is used for the pressure-reducing valve that constant clamping force is controlled.
In figure, 1. roll clamping unit, 2. curvature compensation units, 3. clamping forces regulation display unit, 4. connection units, 5.
Constant clamping force control unit, 6. spatial attitude balancing units, 7. main pins, 1.1. wheel shafts, 1.2. copper packings, 1.3. rollers,
1.4. copper sheathing, 1.5 clamps, 1.6. hexagon socket head cap screws, 2.1 swinging blocks, 2.2. pins, 2.3. swings limited block, and 3.1. underarms turn
Block, 3.2. upper arm switch blocks, 3.3. arm of force regulating parts, 3.4. knuckle joint contiguous blocks, 3.5. hinge ear contiguous blocks, 4.1. fixed blocks,
4.2. center contiguous block, 4.3. spring fastenings, 4.4 limited blocks, 6.1. extension spring contiguous blocks, 6.2. extension spring screw rods, 6.3. extension springs
Contiguous block, 6.4. upper arm extension springs, 6.5. underarm extension springs, 6.6. extension spring screw rods.
Embodiment
The present invention is further described with specific embodiment below in conjunction with the accompanying drawings.
With reference to laser fusion welding station actual conditions, the mounting hole that designed fixture refers to region by former pressure is integrated in microscope group
On, its working condition is as shown in Figure 3.The general structure of doorframe laser fusion welding clamping device is as shown in figure 4, in a Fig. 4 implementation
In example, doorframe laser fusion welding clamping device adjusts display unit 3, perseverance by rolling clamping unit 1, curvature compensation unit 2, clamping force
Clamp clamp force control unit 5, spatial attitude balancing unit 6 and connection unit 4 are constituted.Wherein, clamping unit 1, curvature is rolled to mend
It is that axis is rotated that unit 2 and clamping force regulation display unit 3, which are repaid, with main pin 7 (Fig. 4), and it is in axle pair to roll clamping unit 1
Claim each one group of distribution, to being clamped inside and outside the gusset plate of doorframe, to ensure during Laser Welding welding to the matching between gusset inner and outer plates
Gap is not more than 0.2mm requirement.Two groups of rolling clampings are controlled by one group of constant clamping force control unit 5 of clamping device
The pinching action of unit 1, clamping force regulation display unit 5 can not only adjust the size of clamping force, and can be to clamping force
Visual output is carried out, the ideal position of the stable equilibrium's package unit of spatial attitude balancing unit 6, curvature compensation unit 2 is real
In present welding process, the part of the surface generation Curvature varying of soldering part is effectively compensated for.Pass through connection unit 4
On two pins two follow closely (Fig. 4 is not marked), package unit is integrated in Laser Welding microscope group, its random device people is synchronized with the movement, it is real
The function that Xian Liao robots accompany with folder.
The design of essential elements：
1) clamping unit is rolled：
Roll clamping unit 1 to be mainly made up of wheel shaft 1.1, copper packing 1.2, roller 1.3, copper sheathing 1.4 and clamp 1.5, be folder
The final execution unit of tight device, acts directly on and clamping action is completed on workpiece, with reference to Fig. 5 and combines Fig. 6.Each roller
Copper sheathing 1.4 is embedded in 1.3 centre bore, while respectively equipped with a copper packing 1.2 before and after roller 1.3, wheel shaft 1.1 is sleeved on copper sheathing
1.4 and copper packing 1.2 endoporus in.To ensure roller 1.3 when rolling, wheel shaft 1.1 is not rotated with roller 1.3, in wheel shaft
1.1 have circumferentially opened up one section of deep-slotted chip breaker (Fig. 5 and Fig. 6 are not marked), and swinging block 2.1 is provided with clamp 1.5, by clamp
1.5 arch section is stuck in matching deep-slotted chip breaker, then is fixed with hexagon socket head cap screw 1.6 by the mounting hole of clamp 1.5
The clamp 1.5, not only realizes the connection with wheel shaft 1.1, while also prevent wheel shaft 1.1 and the synchronous axial system of roller 1.3.
2) curvature compensation unit
As shown in fig. 7, curvature compensation unit 2 constitutes mechanical pendulum by swinging block 2.1, swing limited block 2.3 and pin 2.2
Dynamic device.Swinging block 2.1 is different with the circular arc face curvature for swinging limited block 2.3, and the circular arc face curvature of swinging block 2.1, which is less than, to be swung
Both are connected to by the circular arc face curvature of limited block 2.3, pin 2.2 by the coaxial aperture of swinging block 2.1 and swing limited block 2.3
Together.Swing limited block 2.3 to be fixed on the transmission mechanism of outside by two pins one nail on its top, obtain power.Work as welding
During surface curvature change, the roller of gusset inner and outer plates both sides can produce slight oscillatory with the constraint of mechanical pendulous device, real
The adaptive two point of curvature before and after existing light source focus is clamped, so that gusset inner and outer plates are in clamped condition, such as Fig. 8 all the time
It is shown.
3) arm of force unit
Arm of force unit is divided into the first transmission arm and the second transmission arm, with reference to Fig. 9 and combines Figure 10, and the first transmission arm is (in Fig. 9
Signal in be a underdrive arm) be mainly made up of switch block 3.1, arm of force regulating part 3.3 and knuckle joint contiguous block 3.4,
Two transmission arms (being transmission arm on one in Fig. 9 signal) are main to be connected by switch block 3.2, arm of force regulating part 3.3 and cylinder hinge ear
Block 3.5 is connect to constitute；First transmission arm and the second transmission arm constitute the gear unit of clamping device.All motion lists in device
Member is concentrated on this unit, passes through the two pins one nail connection curvature compensation list on the switch block of the first transmission arm and the second transmission arm
Member and two point rolling unit；The output shaft rotation of knuckle joint contiguous block 3.4 and hinge ear contiguous block 3.5 respectively with executive component connects
Connect, executive component in the present embodiment is cylinder.
Wherein, cylinder output shaft close to cylinder body one end connect the second transmission arm cylinder cut with scissors ear contiguous block
3.5；The knuckle joint contiguous block 3.4 of the first transmission arm is connected in the one end of output shaft away from cylinder body of cylinder.
Power arm clamping process, the output shaft of cylinder is outwards exported, and under the driving of its output shaft, the first transmission arm is towards figure
Rotating forward shown in 10, when the roller 1 of the first transmission arm is arrived on the fulcrum on the downside of a gusset inner and outer plates, now first is driven
Arm is stopped operating, but the output shaft of cylinder is continued to output, and at this moment whole cylinder can be using the fulcrum on the downside of door gusset inner and outer plates in
The heart, whole cylinder is towards rotating backward, and also synchronous backward is rotated the second transmission arm, when the roller of the second transmission arm arrives to a gusset
During fulcrum on the upside of inner and outer plates, the output shaft of cylinder stops output, and the roller of the first transmission arm and the second transmission arm roller will be pressed from both sides
The both sides of tight door gusset inner and outer plates, then manipulator laser welder start welding.
Screwed hole 3.6 is provided with knuckle joint contiguous block 3.4, is connected with the screw rod 6.6 of spatial attitude balancing unit,
Itself it is provided with by main pin 3.7, king-pin 3.7 is fixed on connection unit, and knuckle joint contiguous block 3.4 is provided with by it
Mounting hole 3.8 be flexibly connected with the one end of cylinder output shaft away from cylinder body.
Power arm puts the process of opening, the output of cylinder axially feed back into, under the driving of its output shaft, the first transmission arm court
The direction that rotates backward shown in Figure 10 to open, when the first transmission arm arrives to limited block 4.4, the first transmission arm stops operating,
Its opening angle determines, it can be fulcrum with limited block 4.4 towards just that now the output shaft of cylinder, which continues to feeding back into, whole cylinder,
To rotation, also synchronous forward is rotated the second transmission arm, when the output of cylinder is axially fed back into stop position, its second transmission
The opening angle of arm also stops, and then manipulator laser welder returns to home position.
With continued reference to Fig. 9 and Figure 11 is combined, arm of force unit there can also be clamping force to adjust the function of display.Arm of force unit
A leverage can be similar to, one end connection cylinder, the other end connects clamping unit, and centre there can be an arm of force regulating part
3.9, it is respectively provided with left-right rotary threaded rod at the two ends of arm of force regulating part 3.9.For example, in the first cursor switch block 3.1 and
Respectively there is one section of left hand thread bar at the position that two cursor switch blocks 3.2 are connected with arm of force regulating part 3.9, in the He of cylinder contiguous block 3.5
Respectively there are one section of dextrorotation external thread rod, tap bolt point in the position being connected with knuckle joint contiguous block 3.4 with arm of force regulating part 3.8
Xuan Ru not be in the corresponding screwed hole of arm of force regulating part 3.9.In the present embodiment, arm of force regulating part 3.9 can be extension sleeve, lead to
Cross and turn extension sleeve, sleeve two ends are stretched out or retraction equal length simultaneously, the length to be adjusted in synchronism power arm, according to thick stick
Stick force equilibrium principle, and then the output clamping force of transmission arm can be changed., can for the size of clamping force is more intuitively well understood
To mill out a facet on the threaded rod of switch block 3.1 or/and switch block 3.2, the finger of clamping force size is carved with this plane
Show, as shown in figure 11, its numerical values recited is to be calculated to obtain according to the length of selected cylinder model or the arm of force.It again it will be understood that
, can also be on the threaded rod being connected in cylinder contiguous block 3.5 and knuckle joint contiguous block 3.4 with arm of force regulating part 3.9
A facet is milled out, the instruction of clamping force size is carved with this plane, is simply adjusted and display device by these, it is existing
Field can accurately show required clamping force, in order to the effective analysis and regulation in process control, improve welding quality.
4) connection unit：
Referring to Figure 12 and Figure 13 is combined, connection unit is mainly by fixed block 4.1, center contiguous block 4.2, spring fastenings
4.3 and main pin 4.5 constitute.To ensure that the connection in the relative positional accuracy after each unit assembling, this unit is followed closely using four
The mode of two pins (Figure 12 is not marked), it is achieved thereby that the present apparatus is internally between each unit and externally between welding microscope group
Be reliably connected.
For connection unit and the connection for rolling clamping unit, rotated for limitation clamping force regulation display unit around main pin
Opening angle, can be in recess region the first power arm of correspondence of center contiguous block 4.2 or/and a certain of the second power arm
The position of angle of release degree, provided with limited block 4.4, in the present embodiment, limited block can be the limited block of a similar bolt, specifically
Position is as shown in figure 13.The length of center contiguous block 4.2 is left come adjustment bolt by the number of limited block threaded engagement, so that
Can be with the opening angle of power arm during Indirect method control clamping device undamped state.
5) spatial attitude balancing unit：
Referring to Figure 14, spatial attitude balancing unit it is main by extension spring contiguous block 6.3, extension spring screw rod 6.2, extension spring screw rod 6.6,
Second extension spring 6.4 and the first extension spring 6.5 are constituted.There can be two extension springs in this unit, two differences suitable, counterclockwise are balanced respectively
The strength in direction.The first end of first extension spring is connected in cylinder output end, and its second end and connection unit are fixed.Cylinder stretch out,
During product to be welded is clamped, a whole set of clamping device may (towards one side of cylinder) to the rear because of center of gravity and along the main pin inverse time
Pin rotates to an angle, under the elastic force effect of the first extension spring so that device balance and stability is in workpiece surface, not because of weight imbalance
And change angle.The elastic force of extension spring can be by extension spring screw rod 6.2 or/and extension spring screw rod 6.2 to adjust, on the one hand
How much its intensity with the threaded engagement of contiguous block can be adjusted by extension spring screw rod, on the other hand also can be by changing different length
Extension spring adjustment elastic force.The action principle of second extension spring is identical, is mainly used in anti-locking apparatus and turns clockwise.Due to second
Power arm and the limitation in cylinder junction space, spy add an extension spring connection on the hinge ear contiguous block 3.5 of the second power arm
Block 6.3 is used to connect extension spring.
Welding plane adaptation function can mainly be provided by clamping cylinder, as shown in figure 15.According to the demand of clamping force,
The free space size admission pressure different with live selection and cylinder model, in the present embodiment can be from stroke 75mm's
SMC clamping cylinders.
The output shaft of cylinder 7 is connected by the contiguous block for cutting with scissors ear end with clamping force adjusts display unit, such as Figure 16,17 institutes
Show, cylinder 7 provides power source for a whole set of clamping device.Its operation principle is as follows：From the air inlet of inlet end 7.1, outlet side 7.2 goes out
Gas, piston rod is stretched out, and the first power arm is first acted, until interior of body roller is contacted with side-wall inner-plate, now piston rod continues
Stretch out, the action of the second power arm, until body exterior roller is contacted with side-wall outer-plate, so as to complete to clamp.Now, cylinder is not
Whole strokes are covered, it is necessary to reserved part stroke, are reserved 10mm strokes in the present embodiment, for the holding to clamping force and
Welding plane Y-direction deviation it is adaptive, as shown in figure 18.Gusset plate ideal position is the " position of position 2 ", if but having partially in figure
Difference, then may be in " position 1 " or " position of position 3 ".No matter how size is fluctuated in " position 1 " and " fluctuation, root between position 3 "
The reserved stroke set according to cylinder, interior roller, because piston rod continues to stretch out, drives upper arm to move first and after side-wall inner-plate contact
Make until exterior roller is contacted with side-wall outer-plate, the both sides of welding plane can be all clamped, and reach the adaptive work(of welding plane
It can require.
Figure 19 is the pressure-reducing valve controlled for constant clamping force, in the present embodiment can be by pressure-reducing valve in cylinder gas circuit
In use, to outside provide higher than preset range air pressure carry out automatic pressure-reducing, holding clamping force accuracy.
Above is the preferred embodiments of the present invention, those of ordinary skill in the art can also carry out various changes on this basis
Change or improve, on the premise of the total design of the present invention is not departed from, these conversion or improvement should all belong to application claims guarantor
Within the scope of shield.
Claims (9)
1. a kind of weld clamp device, it is characterised in that：
Including clamping unit, clamping arm unit, constant clamping force control unit (5), main pin (7)；
The clamping arm unit includes the second transmission arm, the first transmission arm；
The clamping unit is rotated by main pin (7) and connected, and the second transmission arm is fixedly connected with clamping unit near-end, and first passes
Swing arm is fixedly connected with the distal end of clamping unit；The constant clamping force control unit (5) has body and expansion link, expansion link
End is rotated with the first transmission arm and is connected, and body is rotated with the second transmission arm and is connected；
Both sides positioned at main pin (7), provided with limited block, the limited block is used to limit during clamping device undamped state
Angle of release degree.
2. weld clamp device as claimed in claim 1, it is characterised in that：The clamping arm unit (3) includes the second transmission arm
Switch block (3.2), the first transmission arm switch block (3.1), arm of force regulating part (3.3)；First transmission arm, the second transmission arm switch block
(3.2,3.1) are hinged by main pin (7)；Arm of force regulating part (3.3) is provided with scale, each scale value and corresponding clamping force one
One correspondence；The clamping force of adaptation can be chosen by the length for adjusting the arm of force regulating part (3.3).
3. weld clamp device as claimed in claim 1, it is characterised in that：The arm of force regulating part (3.3) has regulation spiral shell
Female and two-way left-hand thread screw structure.
4. weld clamp device as claimed in claim 3, it is characterised in that：Also include connection unit (4), the connection unit
(4) it is fixedly connected respectively with constant clamping force control unit (5), clamping arm unit.
5. weld clamp device as claimed in claim 4, it is characterised in that：Also include spatial attitude balancing unit (6), it is described
Spatial attitude balancing unit (6) has extension spring (6.4), and the extension spring two ends are connected with the second transmission arm, the first transmission arm respectively,
Extension spring keeps extended state.
6. weld clamp device as claimed in claim 1, it is characterised in that：The constant clamping force control unit (5) includes
Cylinder and pressure-reducing valve.
7. weld clamp device as claimed in claim 1, it is characterised in that：The clamping unit is to roll clamping unit (1),
Plane where workpiece to be clamped is XOY plane, and the direction vertical with the plane is Z-direction；The rolling clamping unit (1) has
For at least two groups rollers mutually clamped, the linear velocity direction that roller is rolled is along Y-direction.
8. weld clamp device as claimed in claim 7, it is characterised in that：Also include curvature compensation unit (2), curvature compensation
Unit (2) includes swinging block (2.1), rolls clamping unit (1) and is fixed on swinging block (2.1), the swinging axle of swinging block (2.1)
The heart is along X to setting；Swinging block (2.1) by clamp workpiece acted on, can along the swinging center adaptability small size swing.
9. a kind of method of work of weld clamp device as claimed in claim 1, it is characterised in that：
Clamping process：Expansion link is ejected, and drives the first transmission arm to be rotated around main pin (7) first direction, and the first transmission arm is propped up
Clamped workpiece, the first transmission arm stops；Expansion link continues to eject, under the positioning action of clamped workpiece, constant clamping force
The body of control unit (5) drives the second transmission arm to be rotated to second direction, and the second transmission arm props up clamped workpiece；
Release process：Expansion link shrinks, under the body of constant clamping force control unit (5) drives, and the first transmission arm is along second
Direction is rotated, until the first transmission arm props up limited block, the first transmission arm stops；Expansion link continues to shrink, and drives second to be driven
Arm is rotated along a first direction around main pin (7), is stopped until expansion link shrinks, and the second transmission arm stops；Wherein, first direction
It is two opposite directions with second direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710501805.8A CN107097008B (en) | 2017-06-27 | 2017-06-27 | Welding clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710501805.8A CN107097008B (en) | 2017-06-27 | 2017-06-27 | Welding clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107097008A true CN107097008A (en) | 2017-08-29 |
| CN107097008B CN107097008B (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710501805.8A Active CN107097008B (en) | 2017-06-27 | 2017-06-27 | Welding clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107097008B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107973116A (en) * | 2017-12-25 | 2018-05-01 | 惠州鸿通电子有限公司 | One kind fastening, rotating integratedization feeding structure |
| CN108311803A (en) * | 2018-04-18 | 2018-07-24 | 上汽大众汽车有限公司 | Fixture for laser welding |
| CN109483120A (en) * | 2017-09-12 | 2019-03-19 | 天津市浩航科技有限公司 | A kind of weld clamp equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995021722A1 (en) * | 1994-02-14 | 1995-08-17 | Ausilio John S | Self-equalizing clamp |
| CN102328177A (en) * | 2011-09-14 | 2012-01-25 | 安徽巨一自动化装备有限公司 | Bidirectional lateral linkage and clamping mechanism |
| CN102528358A (en) * | 2010-11-05 | 2012-07-04 | 特拉华资本形成公司 | Linkage clamp |
| CN203380534U (en) * | 2013-04-23 | 2014-01-08 | 上海道多汽车设备有限公司 | Dual-face clamping device for positioning and clamping vehicle parts |
| CN106624557A (en) * | 2016-12-28 | 2017-05-10 | 奇瑞汽车股份有限公司 | Single-cylinder two-way clamping mechanism |
| CN207119898U (en) * | 2017-06-27 | 2018-03-20 | 上汽大众汽车有限公司 | A kind of weld clamp device |
-
2017
- 2017-06-27 CN CN201710501805.8A patent/CN107097008B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995021722A1 (en) * | 1994-02-14 | 1995-08-17 | Ausilio John S | Self-equalizing clamp |
| CN102528358A (en) * | 2010-11-05 | 2012-07-04 | 特拉华资本形成公司 | Linkage clamp |
| CN102328177A (en) * | 2011-09-14 | 2012-01-25 | 安徽巨一自动化装备有限公司 | Bidirectional lateral linkage and clamping mechanism |
| CN203380534U (en) * | 2013-04-23 | 2014-01-08 | 上海道多汽车设备有限公司 | Dual-face clamping device for positioning and clamping vehicle parts |
| CN106624557A (en) * | 2016-12-28 | 2017-05-10 | 奇瑞汽车股份有限公司 | Single-cylinder two-way clamping mechanism |
| CN207119898U (en) * | 2017-06-27 | 2018-03-20 | 上汽大众汽车有限公司 | A kind of weld clamp device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109483120A (en) * | 2017-09-12 | 2019-03-19 | 天津市浩航科技有限公司 | A kind of weld clamp equipment |
| CN107973116A (en) * | 2017-12-25 | 2018-05-01 | 惠州鸿通电子有限公司 | One kind fastening, rotating integratedization feeding structure |
| CN108311803A (en) * | 2018-04-18 | 2018-07-24 | 上汽大众汽车有限公司 | Fixture for laser welding |
| CN108311803B (en) * | 2018-04-18 | 2023-05-05 | 上汽大众汽车有限公司 | Laser welding fixture |
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|---|---|
| CN107097008B (en) | 2023-05-12 |
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