CN108942026A - A kind of workpiece welding positioner, workpiece weld clamp device and its hold-down mechanism - Google Patents

A kind of workpiece welding positioner, workpiece weld clamp device and its hold-down mechanism Download PDF

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Publication number
CN108942026A
CN108942026A CN201710357863.8A CN201710357863A CN108942026A CN 108942026 A CN108942026 A CN 108942026A CN 201710357863 A CN201710357863 A CN 201710357863A CN 108942026 A CN108942026 A CN 108942026A
Authority
CN
China
Prior art keywords
workpiece
connecting rod
pressure arm
output rod
hold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710357863.8A
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Chinese (zh)
Inventor
马振强
崔少辉
杜宇龙
谢群鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhengzhou Yutong Bus Co Ltd
Original Assignee
Zhengzhou Yutong Bus Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhengzhou Yutong Bus Co Ltd filed Critical Zhengzhou Yutong Bus Co Ltd
Priority to CN201710357863.8A priority Critical patent/CN108942026A/en
Publication of CN108942026A publication Critical patent/CN108942026A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426Fixtures for other work
    • B23K37/0435Clamps
    • B23K37/0443Jigs

Abstract

The present invention provides a kind of workpiece welding positioner, workpiece weld clamp device and its hold-down mechanisms, workpiece welding hold-down mechanism includes matrix and driving cylinder arranged side by side and the pressure arm for workpiece pressing, one end of pressure arm is articulated on matrix, it is connected between the output rod of driving cylinder and the middle section of pressure arm by connecting rod, the both ends of connecting rod are hinged with the output rod and pressure arm respectively, and one end hinged with output rod and matrix guiding movement on the stretching direction of output rod cooperate in the connecting rod.Automatic-clamping profile has been implemented in combination with by driving cylinder, connecting rod, pressure arm and workpiece support block, it can be pressurizeed simultaneously by the driving cylinder to multiple clamping devices in actual use, compared with relying on hand clamp to be clamped profile in the prior art, clamping efficiency is improved, while alleviating labor intensity.

Description

A kind of workpiece welding positioner, workpiece weld clamp device and its hold-down mechanism
Technical field
The present invention relates to a kind of workpiece welding positioner, workpiece weld clamp device and its hold-down mechanisms.
Background technique
Currently, Bus Frame generallys use the weldering of profile group, clamping mode uses active grab, and welding manner is carbon dioxide Protection weldering, welding manner in the prior art have the following problems: being as shown in Figures 1 to 4 the bone of four kinds of different cross section shapes Frame section, respectively the first profile 1 of square section, the second profile 2 of rectangular cross-sectional and third in irregular shape Profile 3 and the 4th profile 4, the type of framework section bar is more, needs to make difference design according to the profile of differential profiles cross-sectional shape, It needs to design a set of clamping device for each framework section bar, the clamping device type of design is more.Bone in the prior art Frame section quantity is more, and traditional hand clamp is opened and compression requires operator and manually opened and clamped, and grasps Make cumbersome, is unable to meet production the requirement of beat, clamping efficiency is low, operator's large labor intensity.Simultaneously framework section bar layout compared with Intensively, the live arrangement space for leaving clamping device for is limited, and clamping device is larger, influences to weld space.Simultaneously in the prior art By the dynamics that artificial judgment clamps, the consistency of the positioning accuracy and positioning that lead to framework section bar positioning mechanism not can guarantee, It is unable to satisfy the requirement of robot welding.
Summary of the invention
The purpose of the present invention is to provide a kind of workpiece weld clamp devices, to solve to rely on hand clamp in the prior art The problem for being clamped profile and causing clamping efficiency low;Purpose, which also resides in, provides a kind of workpiece welding hold-down mechanism and using should The workpiece welding positioner of clamping device.
To achieve the above object, the technical solution of workpiece welding hold-down mechanism of the present invention is: a kind of workpiece welding compacting machine Structure, including matrix and driving cylinder arranged side by side and for the pressure arm of workpiece pressing, one end of pressure arm is articulated on matrix, driving It is connected between the output rod of cylinder and the middle section of pressure arm by connecting rod, the both ends of connecting rod are cut with scissors with the output rod and pressure arm respectively It connects, one end hinged with output rod and matrix guiding movement on the stretching direction of output rod cooperate in the connecting rod.
Hold-down mechanism further includes the position limiting structure for limiting one end limit of sports record hinged with output rod in the connecting rod, When in the limit of sports record, the pressure arm is in the position of compressible workpiece.
Offered in described matrix and stretch out the guide groove that direction extends along output rod, the hinged shaft of the connecting rod and output rod with The guide groove guiding movement cooperation, one end cell wall of the separate driving cylinder of the guide groove constitute the position limiting structure.
The connecting rod is equipped with operation handle.
The technical solution of workpiece weld clamp device of the present invention is: a kind of workpiece weld clamp device, including workpiece compresses Mechanism and workpiece support block, workpiece hold-down mechanism include matrix, hold-down mechanism further include driving cylinder arranged side by side and for The workpiece support block clamps the pressure arm of workpiece together, and one end of pressure arm is articulated on matrix, the output rod and pressure arm of driving cylinder Middle section between by connecting rod connect, the both ends of connecting rod are hinged with the output rod and pressure arm respectively, in the connecting rod with The hinged one end of output rod and matrix guiding movement on the stretching direction of output rod cooperate.
Hold-down mechanism further includes the position limiting structure for limiting one end limit of sports record hinged with output rod in the connecting rod, When in the limit of sports record, the pressure arm is in the position of compressible workpiece.
Offered in described matrix and stretch out the guide groove that direction extends along output rod, the hinged shaft of the connecting rod and output rod with The guide groove guiding movement cooperation, one end cell wall of the separate driving cylinder of the guide groove constitute the position limiting structure.
The connecting rod is equipped with operation handle.
The technical solution of workpiece welding positioner of the present invention is: a kind of workpiece welding positioner, including pedestal, sets on the pedestal The profile clamping device for having one or more to be distributed by setting position, profile clamping device includes workpiece hold-down mechanism and work Part supporting block, workpiece hold-down mechanism include matrix, and hold-down mechanism further includes driving cylinder arranged side by side and is used for and the workpiece Supporting block clamps the pressure arm of workpiece together, and one end of pressure arm is articulated on matrix, the output rod of driving cylinder and the middle part of pressure arm / by connecting rod connect, the both ends of connecting rod are hinged with the output rod and pressure arm respectively, in the connecting rod with output rod cut with scissors The one end connect and matrix guiding movement on the stretching direction of output rod cooperate.
Hold-down mechanism further includes the position limiting structure for limiting one end limit of sports record hinged with output rod of the connecting rod, When in the limit of sports record, the pressure arm is in the position of compressible workpiece.
Offered in described matrix and stretch out the guide groove that direction extends along output rod, the hinged shaft of the connecting rod and output rod with The guide groove guiding movement cooperation, one end cell wall of the separate driving cylinder of the guide groove constitute the position limiting structure.
The connecting rod is equipped with operation handle.
The beneficial effects of the present invention are: in the present invention, it, when in use can be by type by setting pressure arm and workpiece support block Material clamps therebetween, and the compression movement of pressure arm is realized by the driving of driving cylinder and its output rod, connecting rod, uses When, the output rod of driving cylinder stretches out and drives one end of connecting rod guiding movement on matrix along direction is stretched out, and makes one end of connecting rod With determining motion profile, during one end guiding movement of connecting rod, drive pressure arm on matrix towards workpiece support The direction of block is swung, and pressure arm is made to clamp workpiece together with workpiece support block, is clamped the dynamic cylinder of rear-guard in place and is able to carry out pressure maintaining.Welding After the completion, driving cylinder bounces back, and drives one end of connecting rod mobile to the direction of retraction and makes pressure arm backswing.
In the present invention, Automatic-clamping profile is implemented in combination with by driving cylinder, connecting rod, pressure arm and workpiece support block, in fact Border using when can pass through the driving cylinder to multiple clamping devices simultaneously pressurize, in the prior art rely on hand clamp into Row clamps profile and compares, and improves clamping efficiency, while alleviating labor intensity.
Detailed description of the invention
Fig. 1 is the schematic cross-section of the first profile in the prior art;
Fig. 2 is the schematic cross-section of the second profile in the prior art;
Fig. 3 is the schematic cross-section of third profile in the prior art;
Fig. 4 is the schematic cross-section of the 4th profile in the prior art;
Fig. 5 is the use schematic diagram of gripping means grips state in workpiece welding positioner embodiment of the present invention;
Fig. 6 is the use for removing the first mounting base of part in workpiece welding positioner embodiment of the present invention under clamping device opening state Schematic diagram;
Pressure arm when Fig. 7 is gripping means grips state in workpiece welding positioner embodiment of the present invention, connecting rod and cylinder piston rod Cooperate schematic diagram;
Fig. 8 uses schematic diagram for workpiece welding positioner embodiment of the present invention.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The specific embodiment of workpiece welding positioner of the invention, as shown in Fig. 5 to Fig. 8, workpiece welding positioner includes pedestal 16 and at least two workpiece weld clamp device 17(figures on pedestal 16 in show two, in other embodiments, The quantity of workpiece weld clamp device can be increased according to the actual situation), each workpiece weld clamp device is along the road of design Line arranged for interval.
Workpiece weld clamp device 17 includes the first mounting base 1 and the second mounting base 2 being mounted on pedestal 16, the first peace Dress seat 1 and the second mounting base 2 are spaced positioned opposite, open up jagged in the first mounting base 1 and form two and be arranged vertically Horizontal edge and vertical edge, supporting block 3 is equipped on horizontal edge and vertical edge, between supporting block 3 and horizontal edge, vertical edge compress have supporting block pad Piece 4.Supporting block 3 and the fixed form of supporting block gasket 4 can be with are as follows: by opening up through-hole in supporting block gasket 4, supporting block 3, Tapped blind hole is opened up on the horizontal edge and vertical edge of the first mounting base 1, sunk screw sequentially passes through supporting block, gasket and screws in horizontal edge In the tapped blind hole of vertical edge, supporting block and gasket are fixedly mounted on horizontal edge and vertical edge by realization.
It is frame-shaped construction as Fig. 5 to Fig. 7 can be seen that the second mounting base 2, separate first mounting base 1 of frame-shaped construction Side is equipped with opening, is equipped with link mechanism and cylinder piston rod 12 in frame-shaped construction, wherein link mechanism includes connecting rod 8 and pressure Arm 7, wherein pressure arm 7 is L-shaped structure, and the lower end of pressure arm 7 is articulated in the second mounting base 2, and one end of connecting rod 8 is articulated with pressure arm 7 L shape turning position, the other end of connecting rod 8 is articulated on cylinder piston rod 12 by hinged shaft 13.In the present embodiment, cylinder 11 Using compact thin wall cylinder, and cylinder 11 is located at the underface of the second mounting base 2, and overall structure is more compact.Such as Fig. 5 institute Show, operation handle be installed on the middle position of connecting rod 8, in figure, solid line show 9 for clamping device it is in clamped condition under Operation handle one, dotted line show 10 for clamping device it is in the open state under operation handle two.Operation handle can be Cylinder 11 is operated in the case where disconnecting gas source for operator manually carries out precompressed to profile 18.Operation handle can prevent Only it is located at dead-centre position when cylinder drive link acts and connecting rod is caused to be unable to drive pressure arm work.
In the opening of the second mounting base 2 protective cover 14 is installed, offers in protective cover 14 and pass through for operation handle Allow bit port.Protective cover 14 can prevent the foreign matters such as welding slag in welding process from entering in link mechanism and cylinder piston rod 12. The guide groove 15 protruded into for hinged shaft 13 is offered on the wherein side of the second mounting base 2, guide groove 15 can be to hinged shaft 13 Movement along the vertical direction is oriented to.Simultaneously as seen from Figure 5, when profile 18 is clamped in place, 8 level of connecting rod is set It sets, block cooperates the cell wall of hinged shaft 13 and 15 upper end of guide groove in the up-down direction, which can prevent cylinder 11 or operation When handle pushes hinged shaft to continue to move up, hinged shaft 13 drives the one end of connecting rod 8 being connected with pressure arm 7 towards lower section shown in fig. 5 It is swung, and then the pressing for driving hold 7 to be swung to the left and hold 7 being caused to release to profile 18 clamps.
Pressure arm 7 includes pressure arm ontology, is respectively arranged with pressure on the two mutually perpendicular horizontal edges and vertical edge of pressure arm ontology Block 5, two briquettings 5 are corresponding with the supporting block 3 in the first mounting base 1 respectively, compress between two briquettings 5 and horizontal edge, vertical edge There is briquetting gasket 6, the thickness of briquetting gasket 6 is adjustable, the fixed form of briquetting gasket 6, briquetting 5 and pressure arm ontology and the first installation Seat 1, supporting block gasket 4 are consistent with the fixed form of supporting block 3, and details are not described herein for content.
Use process of the invention is: opening up on pedestal first can be for the through-hole that cylinder passes through, by the first mounting base 1 Be fixedly mounted on pedestal 16 with the second mounting base 2, make cylinder 11 pass through through-hole, cylinder 11 be fixed in the second mounting base 2 or It is fixed in other structures.Profile 18 is placed in supporting block 3, manual pull operation handle moves up connecting rod, this When, cylinder 11 disconnects gas source, and operation handle drives connecting rod to move up, while pressure arm 7 being driven to put in the second mounting base 2 Dynamic, pressure arm 7 contacts precompressed of the profile completion to profile.After the completion of precompressed, opening gas source keeps the cylinder 11 of multiple clamping devices same When start to work, 11 drive link 8 of cylinder moves up and makes the other end of connecting rod 8 that pressure arm 7 be driven to complete to the compression of profile, When hinged shaft 13 is moved upward to the upper cell wall of guide groove, two locating pieces 5 and the supporting block 3 of pressure arm 7 are completed together to profile Clamping, profile is by Complete Bind at this time.After the completion of welding, profile is pressed in the piston rod counter motion of cylinder, pressure arm releasing Pressure, takes out profile, and entire operation process is completed.
Workpiece welding positioner of the invention is realized by the cooperation of cylinder and link mechanism to the automatic, simultaneously of profile It clamps, compared with needing to be clamped with hand vice in the prior art, operating efficiency is improved, and labor intensity mitigates.Folder of the invention simultaneously Tight device uses modularized design, and connection type and components use standardized structural, versatile.Simultaneously by that can be seen in figure Out, the opening of clamping device and clamping do not take up extra space, in body frame due to the ring that profile is intensive, working space is small It is with the obvious advantage under border.Clamping device of the invention uses link rod structure, and chucking power is able to satisfy the folder greater than 300Kg welding stress Requirement is held, while being adjusted using gasket, positioning accuracy can satisfy ± 0.2mm.
In the present invention, when the cross sectional shape difference of each profile, it is only necessary to the shape of supporting block is redesigned, it is general Property is stronger.
In the present embodiment, the second mounting base, link mechanism, cylinder and protective cover, which have collectively constituted, compresses profile Hold-down mechanism.
The present embodiment is illustrated by taking profile as an example, and in other embodiments, welding positioner of the invention is also applied for it His Workpiece clamping.
In the present embodiment, the second mounting base is matrix, and cylinder constitutes driving cylinder, in other embodiments, driving cylinder It can be hydraulic cylinder etc..Cylinder piston rod is the output rod of drive rod, and the one end being hinged in connecting rod with output rod is by leading To slot and matrix, guiding movement cooperates on the stretching direction of output rod.The upper cell wall of guide groove constitutes position limiting structure, at it In his embodiment, position limiting structure can be other structures, if position limiting structure can be to cooperate with pressure arm block to limit pressure arm Swing the structure of the limit.
The specific embodiment of workpiece weld clamp device of the present invention, the structure and above-described embodiment of workpiece weld clamp device Structure it is consistent, details are not described herein for content.
The specific embodiment of workpiece welding hold-down mechanism of the present invention, workpiece weld the structure and above-described embodiment of hold-down mechanism Structure it is consistent, details are not described herein for content.

Claims (12)

1. a kind of workpiece welds hold-down mechanism, it is characterised in that: including matrix and driving cylinder arranged side by side and for compressing work One end of the pressure arm of part, pressure arm is articulated on matrix, is connected between the output rod of driving cylinder and the middle section of pressure arm by connecting rod It connects, the both ends of connecting rod are hinged with the output rod and pressure arm respectively, and one end hinged with output rod and matrix exist in the connecting rod Guiding movement cooperates on the stretching direction of output rod.
2. workpiece according to claim 1 welds hold-down mechanism, it is characterised in that: hold-down mechanism further includes for limiting The position limiting structure of one end limit of sports record hinged with output rod in connecting rod is stated, when being in the limit of sports record, the pressure arm is in can The position of workpiece pressing.
3. workpiece according to claim 2 welds hold-down mechanism, it is characterised in that: offer in described matrix along output rod The guide groove that direction extends is stretched out, the hinged shaft and the guide groove guiding movement of the connecting rod and output rod cooperate, the guiding One end cell wall of the separate driving cylinder of slot constitutes the position limiting structure.
4. workpiece described in any one welds hold-down mechanism according to claim 1 ~ 3, it is characterised in that: the connecting rod is equipped with Operation handle.
5. a kind of workpiece weld clamp device, it is characterised in that: including workpiece hold-down mechanism and workpiece support block, workpiece compacting machine Structure includes matrix, and hold-down mechanism further includes driving cylinder arranged side by side and for clamping workpiece together with the workpiece support block One end of pressure arm, pressure arm is articulated on matrix, is connected between the output rod of driving cylinder and the middle section of pressure arm by connecting rod, even The both ends of bar are hinged with the output rod and pressure arm respectively, and one end hinged with output rod and matrix are in output rod in the connecting rod Stretching direction on guiding movement cooperation.
6. workpiece weld clamp device according to claim 5, it is characterised in that: hold-down mechanism further includes for limiting The position limiting structure of one end limit of sports record hinged with output rod in connecting rod is stated, when being in the limit of sports record, the pressure arm is in can The position of workpiece pressing.
7. workpiece weld clamp device according to claim 6, it is characterised in that: offer in described matrix along output rod The guide groove that direction extends is stretched out, the hinged shaft and the guide groove guiding movement of the connecting rod and output rod cooperate, the guiding One end cell wall of the separate driving cylinder of slot constitutes the position limiting structure.
8. according to workpiece weld clamp device described in claim 5 ~ 7 any one, it is characterised in that: the connecting rod is equipped with Operation handle.
9. a kind of workpiece welding positioner, it is characterised in that: including pedestal, the pedestal is equipped with one or more by setting The profile clamping device of position distribution, profile clamping device include workpiece hold-down mechanism and workpiece support block, workpiece hold-down mechanism Including matrix, hold-down mechanism further includes driving cylinder arranged side by side and the pressure for clamping workpiece together with the workpiece support block One end of arm, pressure arm is articulated on matrix, is connected between the output rod of driving cylinder and the middle section of pressure arm by connecting rod, connecting rod Both ends it is hinged with the output rod and pressure arm respectively, one end hinged with output rod and matrix are in output rod in the connecting rod Stretch out guiding movement cooperation on direction.
10. workpiece welding positioner according to claim 9, it is characterised in that: hold-down mechanism further includes described for limiting The position limiting structure of one end limit of sports record hinged with output rod of connecting rod, when being in the limit of sports record, the pressure arm is in and can press The position of clamping of workpieces.
11. workpiece welding positioner according to claim 10, it is characterised in that: offer in described matrix and stretched along output rod The hinged shaft and the guide groove guiding movement of the guide groove that direction extends out, the connecting rod and output rod cooperate, the guide groove One end cell wall of separate driving cylinder constitute the position limiting structure.
12. according to workpiece welding positioner described in claim 9 ~ 11 any one, it is characterised in that: the connecting rod is equipped with behaviour Make handle.
CN201710357863.8A 2017-05-19 2017-05-19 A kind of workpiece welding positioner, workpiece weld clamp device and its hold-down mechanism Pending CN108942026A (en)

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CN201710357863.8A CN108942026A (en) 2017-05-19 2017-05-19 A kind of workpiece welding positioner, workpiece weld clamp device and its hold-down mechanism

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CN201710357863.8A CN108942026A (en) 2017-05-19 2017-05-19 A kind of workpiece welding positioner, workpiece weld clamp device and its hold-down mechanism

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CN108942026A true CN108942026A (en) 2018-12-07

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