CN107597922A - A kind of bending equipment - Google Patents

Abstract

The present invention relates to a kind of bending equipment, belongs to bending processing technology field.Bending equipment includes frame and rack-mounted grip unit, core rod unit, plectrum unit, bending unit and plug unit；Grip unit is used for clamping workpiece；Core rod unit includes insertion workpiece bending position adjacent to the side of its bending interior angle with the plug of auxiliary work-piece bending process；Plectrum unit is used to carry out plectrum processing to workpiece；Plug unit is used to carry out plectrum before processing to workpiece in plectrum unit, and piece is limited with extracting to be spaced after the processing of bending at least once through plectrum processing in the restriction piece in insertion interval between being bent over part of workpiece, and in workpiece；Bending unit is used for workpiece bending to predetermined bending angle.By setting up plug unit on the basis of existing bending equipment, the yields that bending processing is carried out to workpiece is effectively improved, can be widely applied in the production industrial circle such as evaporator.

Description

A kind of bending equipment

Technical field

The present invention relates to bending machining equipment, specifically, is related to a kind of be used for the workpiece such as evaporator progress bending part The bending equipment of reason.

Background technology

Disclose a kind of bending equipment in Publication No. CN104668396A patent document, including frame and installed in this It is used for the grip unit of clamping workpiece in frame, for inserting workpiece bending position adjacent to the side of its bending interior angle with backman The core rod unit of part bending process, for carrying out the plectrum unit of plectrum processing to workpiece, and for by workpiece bending to predetermined The bending unit at bending angle.Core rod unit includes plug, and bending unit is included by the left folding curved boom that bending rotating shaft is hinged and the right side Bending arm.

Exemplified by carrying out bending processing to micro-channel heat exchanger, its bending process comprises the following steps：（1）Feeding step, The micro-channel heat exchanger for treating bending is clamped by clamping unit, and plug is inserted into workpiece bending position adjacent to bending interior angle Side；（2）Plectrum step, plectrum processing is carried out by plectrum unit from top to down to the flat tube of micro-channel heat exchanger；（3）Folding Curved step, start bending unit with by micro-channel heat exchanger bending to predetermined bending angle.

Applicant has found during bending processing is carried out to the flat tube of micro-channel heat exchanger using above-mentioned bending equipment The problem of flat tube fitting in heat exchanger after bending is handled be present, which not only reduces the heat exchange efficiency of heat exchanger after bending, The ponding also easily at bonding position and further reduce heat exchange efficiency, cause workpiece bending handle yields it is relatively low.

The content of the invention

It is an object of the invention to provide a kind of bending equipment, by being improved to its structure, to improve to evaporator etc. Workpiece carries out the yields of bending processing.

To achieve these goals, the present invention, which provides structure improved bending equipment, includes frame and rack-mounted Grip unit, core rod unit, plectrum unit, bending unit and plug unit；Grip unit is used for clamping workpiece；Core rod unit bag Insertion workpiece bending position is included adjacent to the side of its bending interior angle with the plug of auxiliary work-piece bending process；Plectrum unit be used for pair Workpiece carries out plectrum processing；Plug unit to be used to carry out plectrum before processing to workpiece in plectrum unit, portion is bent in workpiece Insertion interval limits piece between part, and limits piece with extracting interval after the processing of bending at least once through plectrum processing in workpiece；Bending Unit is used for workpiece bending to predetermined bending angle.

By setting up plug unit on bending equipment to be improved to its structure, so as to enter in plectrum unit to workpiece Row plectrum before processing, piece is limited at the insertion interval between part that is bent over of workpiece, and workpiece through plectrum handle with least once Interval, which is extracted, after bending processing limits piece；Using interval limit piece force workpiece it is adjacent be bent over portion in bending process between Away from being maintained at more than preset space length, there is the fitting problem for being bent over part after effectively preventing bending, effectively improve workpiece The yields of bending processing.

Specific scheme is provided with including floating ground for plug unit and is spaced the mounting seat for limiting piece, and drive installation seat is relative Frame is vertically laterally doing the plug drive mechanism of two dimensional surface motion with insertion, and the interval for extracting rear-inclined arrangement is being limited Piece is reset to the resetting-mechanism along insertion lateral arrangement；Vertical is along axial arranged parallel to the plug in core rod unit.

In the course of the work, insertion position is moved to insert workpiece quilt so that interval is limited into piece by plugging drive mechanism Between bending part, in workpiece after plectrum processing and bending processing, positioned at the part interval that is bent in part limit sector-meeting with Be bent over the inclination in portion and be in tilted layout, and floating mount be advantageous to interval limit piece it is overall with this be in tilted layout process and Change, so as to be advantageous to subsequently carry out extracting interval restriction piece using the plug drive mechanism of two dimension；Then resetting-mechanism is passed through Reset and be that next inserted sheet process is prepared, to improve the efficiency of bending process.

One more specifically scheme is that resetting-mechanism includes vertically arranged pull bar, is installed in rotation in mounting seat Rotating shaft, one end and pull bar be hinged and connecting rod that the other end is fixedly connected with rotating shaft, and for lifting pull bar in reseting procedure So that reseting interval limits piece and to pull bar lift the return actuator of constraint in bending process release；Interval limits consolidating for piece Fixed end is fixedly connected with the other end of rotating shaft.It is easy to disposably reset all interval restriction pieces by pull bar.

Specific scheme is that interval limits piece as U-shape structure again, and return actuator is cylinder；Two yoke ends of U-shape structure For its fixing end, concave part is formed to be provided with to core to escape groove of the plectrum wheel during plectrum in plectrum unit, bending part Escape groove of the plug in bending process in rod unit.Interval restriction can be effectively realized from the interval restriction piece of the structure Process, reduce and interference effect caused to the course of work of other units；It is return actuator using cylinder, can be in bending process By other releases in cylinder body without causing to constrain to motion of the piston in cylinder body, in order to realize bending process release to drawing Bar carries out lifting constraint.

More specifically scheme also includes leading to what the insertion process of interval restriction piece was oriented to for plug unit for another To mechanism, the guiding mechanism includes fishback, the transverse actuator that promotion fishback transversely moves back and forth and combed for driving Tooth plate vertically moves and fishback is driven in bending process release and constrains so that it is quick condition on vertical Vertical actuator；Fishback is provided with the broach groove for limiting piece for interval and passing through.With improve interval limit piece insertion efficiency with Accuracy rate, especially from soft material when interval limits piece.

Another specific scheme is that bending equipment also includes being used for the projection of the bending place of workpiece after bending is handled Force down the pressure protrusion element of processing, pressure protrusion element includes the briquetting and driving pressure by the plug side in core rod unit The actuator that block vertically moves back and forth, by the raised processing of bending to predetermined altitude.

One preferable scheme is that grip unit includes laterally floating mounting bracket and on laterally floating mounting bracket Upper main clamping device, upper auxiliary clamping device, lower main clamping device, lower auxiliary clamping device, backboard unit and base plate unit, it is horizontal Can laterally slidably it be arranged on the bending arm in bending unit along floating to floating mount frame；Upper auxiliary clamping device is relatively horizontal Can vertically it be slided to floating mount frame to match size of the pre- clamping workpiece on vertical；Backboard unit includes backboard, backboard Lower end be provided with for the pre- clamping workpiece of holding supporting plate；Base plate unit is laterally and vertical along clamping including backing plate and driving backing plate Mobile driver；The both ends that upper main clamping device is used to clamp backing plate with lower main clamping device are located at backboard and pad to clamp Workpiece between plate.By aiding in the position on vertical of clamping device in adjustment, the pre- clamping to workpiece is realized, and pass through the back of the body The workpiece being matched for clamping tightly between the two of plate and backing plate, because the size of backboard and backing plate is made bigger on vertical, from And the workpiece of different height size can be clamped, it can match various sizes of work without carrying out replacing to clamping device Part.

Preferred scheme is that grip unit also includes the vertical slide plate that relatively transverse floating mount frame can be slided vertically And the actuator that the vertical slide plate of driving vertically slides, backboard can be laterally slidably arranged on vertical by guiding mechanism along clamping On slide plate, backboard unit includes being used for the driver for driving the relatively vertical slide plate of backboard to slide laterally along clamping；Clamping device bag Include clamping actuator, transfer lever and clamping jaw；The force side of transfer lever and the mover of clamping actuator are hinged, and clamping jaw is with transmitting The force side of lever, which is fixedly connected to form, to be used to be fastened on the hook-like configuration by holder on the side of bending arm；Upper main folder The clamping jaw for holding mechanism is provided with the clamping pilot hole inserted from top to bottom for backing plate.By the cooperation of lever and hook-like configuration, only An actuator is needed to complete the clamping to workpiece and the actuating of release movement；And slided based on backboard, clamping device with vertical The action of plate coordinates and realizes the clamping or release to workpiece, effectively completes various actions.

Another preferable scheme is also to include feeding unit material；Feeding unit material includes the elevating mechanism being fixed in frame, The feeding crane that can be laterally slidably arranged on along insertion by cross slide way slide block mechanism on the lift side of elevating mechanism, and For aiding in treating that bending workpieces are overturn to the feeding rollover stand of vertical position from flat position；Feeding rollover stand is adjacent to core rod unit One end be hinged to by hinge on feeding crane.It is easy to carry out feeding to large-scale workpiece, improves bending efficiency.

Another preferable scheme includes processor and memory for the control unit of bending equipment, and memory storage has meter Calculation machine program, can realize following step when computer program is executed by processor：

Pre-bend step, controls bending unit by workpiece bending first angle；

Workpiece inflection second angle through pre-bends process, second angle are less than first jiao by inflection step, control bending unit Degree；

Paddle step, control plug unit extract interval from the workpiece handled through inflection and limit piece；

Bending step again, bending unit is controlled by the workpiece bending third angle handled through paddle to preset shape.

By the step that pre-bends to be bent over leaving bending track in portion in workpiece, by inflection step in order to extract between Every limiting piece, it is particularly suitable for the workpiece larger to bending angle and carries out bending processing.

Brief description of the drawings

Fig. 1 is the stereogram of the embodiment of the present invention；

Fig. 2 is Fig. 1 A partial enlarged drawings；

Fig. 3 is Fig. 1 B partial enlarged drawings；

Fig. 4 is the stereogram of bending unit in the embodiment of the present invention；

Fig. 5 is grip unit and the stereogram of right folding curved boom in the embodiment of the present invention；

Fig. 6 is Fig. 5 C partial enlarged drawings；

Fig. 7 is Fig. 5 D partial enlarged drawings；

Fig. 8 is grip unit and stereogram of the right folding curved boom after backboard and nylon sheet is omitted in the embodiment of the present invention；

Fig. 9 is the stereogram of base plate unit in the embodiment of the present invention；

Figure 10 is the stereogram of frame, centering unit and plug mounting seat in the embodiment of the present invention；

Figure 11 is Figure 10 E partial enlarged drawings；

Figure 12 is the stereogram of feeding unit material in the embodiment of the present invention；

Figure 13 is the stereogram that plectrum unit in the embodiment of the present invention, plug unit and interval limit piece；

Figure 14 is Figure 13 F partial enlarged drawings；

Figure 15 is Figure 13 G partial enlarged drawings；

Figure 16 is pilot unit and the stereogram of pressure protrusion element in the embodiment of the present invention；

Figure 17 is the workflow diagram for carrying out bending processing to workpiece using the embodiment of the present invention.

Embodiment

With reference to embodiments and its accompanying drawing the invention will be further described.

Embodiment

Referring to Fig. 1, bending equipment 1 of the present invention includes frame 10, control unit and the bending unit in frame 10 2nd, grip unit 3, centering unit 5, core rod unit 11, plectrum unit 6, feeding unit material 7, plug unit 8 and pressure protrusion element 9.

Control unit is not shown in the accompanying drawings, and it includes processor, memory and the control on ground or frame Touch-screen, processor are performed corresponding in memory by controlling touch-screen to receive the instruction that operating personnel input according to the instruction Computer program and control each unit in bending equipment 1 to be engaged and to workpiece perform centering, inserted sheet, plectrum, paddle and Bending etc. operates.

Referring to Fig. 1 to Fig. 4, bending unit 2 includes bending servomotor 20, bending screw mandrel 21, driven nut, bending slide unit 22nd, the curved line slideway 231 of left folding, the curved line slideway 232 of right folding, left Bending Slide Block 241, right Bending Slide Block, left folding curved rod 25, Right folding curved rod 26, left folding curved boom 27, right folding curved boom 28 and bending rotating shaft 29.Two bending line slideways are arranged along the horizontal.

Left folding curved boom 27 is installed in rotation in frame 10 with the upper and lower ends of right folding curved boom 28 by bending rotating shaft 29；It is left One end of bending connecting rod 25 is be hinged with bending slide unit 22, and the other end is be hinged with left folding curved boom 27；One end of right folding curved rod 26 with Bending slide unit 22 is be hinged, and the other end is be hinged with left folding curved boom 28；Left folding curved rod 25 intersects with the extension line of right folding curved rod 26 V-structure of the intersection point in the side of bending slide unit 22 is formed, with the increase of V-structure angle, it applies to point on bending arm Power is also bigger.

The curved line slideway 231 of left folding line slideway 232 curved with right folding is parallel to arrange that ground is arranged in frame 10, and bending is slided Platform 22 is slidably mounted on the two bendings line slideway by left Bending Slide Block 241 and right Bending Slide Block, you can transversely It is slidably mounted in frame 10.Bending servomotor 20 drives bending screw mandrel 21 to rotate by timing belt, so as to promote therewith The driven nut for engaging and being installed on the lower surface of bending slide unit 22, and then promote bending slide unit 22 to be slided along line slideway, and Two bending arms are pulled/pushed on by bending connecting rod to rotate to realize expansion or equivalent, in the present embodiment, two around bending rotating shaft 29 Individual bending arm can realize 0 degree of bending to 165 degree of bending angles.

Referring to Fig. 1 to Fig. 7, grip unit 3 includes upper main clamping device 302,303, lower main clamping device 306,307, on Aid in clamping device 301,304, lower auxiliary clamping device 305,308, backboard unit and base plate unit 4；Wherein, upper main clamping machine Structure 302 is arranged on the upper end of left bent over arms 27 with upper auxiliary clamping device 301 by left installing mechanism, lower main clamping device 306 are arranged on the bottom of left bent over arms 27 with lower auxiliary clamping device 305 by left installing mechanism；Upper main clamping device 303 are arranged on the upper end of right bent over arms 28 with upper auxiliary clamping device 304 by right installing mechanism, lower main clamping device 307 with it is lower auxiliary clamping device 308 by right installing mechanism be arranged on right bent over arms 28 bottom on, by clamping device, Backboard unit and the interoperation of base plate unit are solid so that micro-channel heat exchanger to be located to the clamping of the Workpiece structure of its bending part both sides Corresponding to being scheduled in bent over arms.

As shown in figure 1, base plate unit 4 includes right base plate unit 41 and left base plate unit 42, right base plate unit 41 passes through the right side Pacify mechanism to be arranged on right folding curved boom 28 as shown in Figure 4, left base plate unit 42 is arranged on as shown in Figure 4 by left installing mechanism Left folding curved boom 27 on, with two bending arms in bending process exhibition resultant motion and around 29 turns of bending rotating shaft as shown in Figure 4 It is dynamic.

The structure of left and right base plate unit is illustrated by taking right base plate unit 41 as an example below.Referring to Fig. 9, right backing plate list Member 41 includes backing plate 43, horizontal pushing mechanism and elevating mechanism.Horizontal pushing mechanism includes whole right base plate unit being attached to You An mechanisms On mounting seat 44, it is horizontal push away actuator, straight-line guide rail slide block mechanism and cross slide 46, straight-line guide rail slide block mechanism includes fixing Each three line slideways 451 being arranged along the horizontal on the both sides of cross slide 46 and it is fixed in mounting seat 44 and is led with straight line The sliding block 452 that rail 451 is engaged, the horizontal stator for pushing away actuator are fixedly connected with mounting seat 44, and mover is fixed with cross slide 46 Connection, is transversely moved back and forth so as to promote cross slide 46 to be mounted opposite seat 44；The horizontal actuator that pushes away may be selected from linear electric motors, gas Cylinder, oil cylinder or electric rotating machine and leading screw and nut mechanism, which coordinate, forms straight-line displacement output device.Elevating mechanism includes lift servo Motor 47, the drive gear being connected by decelerator with lift servo motor 47 and with the drive gear coordinate and be fixed on Lifter rack 48 on backing plate 43；Vertically arranged line slideway is disposed between the both sides of backing plate 43 and cross slide 46 to slide Block mechanism, to carry out limition orientation to slip of the relatively transverse slide of backing plate 43 46 on vertical.It has been internally formed in backing plate 43 Vertically arranged mounting groove 430, for installing lifter rack 48 and accommodating drive gear.

Referring to Fig. 4 to Fig. 8, by taking right installing mechanism as an example, the structure of installing mechanism is illustrated.Right installing mechanism includes Laterally floating mounting bracket 31 and vertical slide plate 32, backboard unit include backboard 39；Laterally floating mounting bracket 31 passes through laterally three Straight-line guide rail slide block mechanism 321,322,323 is can transversely be slidably mounted on right folding curved boom 28, i.e., with respect to right folding curved boom 28 can slide laterally along floating, so that each part on laterally floating mounting bracket 31 can float in bending process The left and right floating with the progress of bending process in transverse direction, there is undesirable deformation, laterally floating mounting bracket 31 to reduce workpiece Including two vertical guide groove bars 311,312 being arranged parallel to and the vertical straight being installed on the vertical lateral surface of guide groove bar 312 Line guide rail 313；The medial surface of vertical guide groove bar 311,312 is formed with the T-shaped guide groove arranged along its length, vertical slide plate 32 Two side ends formed with the T-shaped lateral edge portion being engaged with the T-shaped guide groove, as shown in Figure 7, the shape on vertical guide groove bar 311 Into there is T-shaped guide groove 3111, to enter row constraint to the relative motion between vertical slide plate 32 and laterally floating mounting bracket 31 with being oriented to；Edge The straight-line guide rail slide block mechanism 322 of lateral arrangement can vertically be slidably mounted on folding by straight-line guide rail slide block mechanism 331 On curved boom 28；The rear plate face of vertical slide plate 32 is fixedly connected with the sliding block of straight-line guide rail slide block mechanism 322, so as to by vertical Drive mechanism drives it vertically to be reciprocatingly slided with respect to bending arm 28, and the vertical drive mechanism is electric including servomotor and with servo The leading screw and nut mechanism 332 of machine drive connection.

Upper main clamping device 303, lower main clamping device 307 and lower auxiliary clamping device 308 are fixed horizontal by its mounting seat To on floating mount frame 31；Upper auxiliary clamping device 304 is by straight-line guide rail slide block mechanism 331 and can vertically slidingly back and forth On laterally floating mounting bracket 31, and its relatively transverse floating mount frame 31 is hung by cucurbit 34 and moved, and pass through hand Dynamic formula fixture 341 locks to the relative position between upper auxiliary clamping device 304 and laterally floating mounting bracket 31.

Exemplified by aiding in clamping device 308 below, the structure of eight clamping devices is illustrated.Aid in clamping device 308 Including mounting seat 384, clamping jaw 380, transfer lever 381 and clamping actuator 382；The fulcrum of transfer lever 381 passes through hinge 383 It is hinged in mounting seat 384；The stator of clamping actuator 382 is hinged in mounting seat 384 by hinge 386, and mover passes through hinge Axle 385 and the force side of transfer lever 381 are hinged；Clamping jaw 380 is fixedly connected with the force side of transfer lever 381 and forms fastening L-type structure on the side end of micro-channel heat exchanger bottom right.Lower auxiliary support mechanism 38 is arranged on laterally by its mounting seat 384 On floating mount frame 31.

Transfer lever 381 is boosting lever；Clamping actuator 382 may be selected from cylinder, oil cylinder, linear electric motors isoline displacement Output device, the present embodiment elect cylinder as, in the course of the work, are promoted by the stretching motion of cylinder piston rod opposing cylinder Transfer lever 381 rotates around hinge 383, to control clamping jaw 380 to clamp or discharge workpiece.In addition, as shown in figure 8, lower main folder is held Mechanism 307 includes clamping drive cylinder 3071, and upper main clamping device 303 includes clamping drive cylinder 3031.

Right base plate unit 41 by its mounting seat 44 by the installation 3110 located at vertical guide groove bar 311,312 upper ends, 3120 and be fixed on laterally floating mounting bracket 31, by lift servo motor 47 drive backing plate 43 vertically move so that under it End is through the clamping pilot hole 3031 on the clamping jaw located at upper main clamping device 303, until entering and the lower main phase of clamping device 307 The opening position of clamping.

Be equipped with three pieces of nylon sheets vertically arranged 392 on backboard 39, and its lower end edge horizontal extension be provided with supporting plate 391, backboard 39 is arranged on vertical slide plate 32 by being oriented to along the guiding mechanism of clamping lateral arrangement, i.e. clamping is laterally vertical Arranged in the direction of backboard 39, the plate face of backing plate 43, and its relatively vertical edge of slide plate 32 is driven by straight-line displacement output device Transverse shifting is clamped, so as to control its clamping spacing between backing plate, is clamped with the workpiece to different-thickness.In this reality Apply in example, guiding mechanism includes four optical axises 351 for being parallel to each other and being fixedly connected with backboard 39, by optical axis 351 along slip The slip of bearing 3510 and realize the horizontal guide and limit of clamping；Straight-line displacement output device includes drive cylinder 352, T-shaped company Fitting 353, wedge block 354 and wedge block 355, wherein, drive cylinder 352 is fixedly connected with laterally floating mounting bracket 31, Cylinder rod is fixedly connected with T-shaped connector 353 to drive its sliding laterally along the plate face parallel to backboard 39, i.e., T-shaped connection Part 353 can be laterally slidably arranged on laterally floating mounting bracket 31 by guiding rail mechanism along floating；In T-shaped connector Wedge-shaped bootstrap block 3531,3532, the relative backboard 31 of two wedge-shaped bootstrap blocks 3531,3532 are fixed with 353 two transverse ends The incline direction of plate face and inclination angle all same, wedge block 354,355 forms oblique with wedge-shaped bootstrap block 3531,3532 respectively The lozenges that face is engaged, so as to during T-shaped connector 353 slides laterally along floating, promote two wedge block edges Clamping slides laterally, so as to promote backboard 39 to be slid laterally along clamping, with the clamping workpiece together with backing plate.

Referring to Fig. 1 and Figure 10, in frame 10, centering unit is installed positioned at the both sides of grip unit 3 and base plate unit 4 5, treat that the bending part of bending workpieces is moved at the medium position of bending unit 2 for promoting, i.e., by the side of plug 111 Place.Centering unit 5 includes 50, two centering drive links 511 of centering actuator（In figure, it is connected on right centering unit 502 Connecting rod be not shown）, left centering unit 501 and right centering unit 502.

Centering actuator 50 is straight-line displacement output device, elects cylinder as in the present embodiment.Below with installed in frame The structure of left and right centering unit is illustrated exemplified by left centering unit 501 on 10 left sides, the structure of right centering unit 502 With the substantially symmetric arrangement of structure of left centering unit 501, will not be repeated here.

Referring to Figure 10 and Figure 11, left centering unit 501 includes cross slide 513, first cross slide way slide block mechanism, centering Adjustment framework 53, left locating piece 54, the second cross slide way slide block mechanism and transversal driving mechanism, two pieces of left locating pieces 54 are arranged in Centering is adjusted on the right flank of framework 53 to be positioned to workpiece leftward position.Second guide rail slide block mechanism includes being fixed on machine On frame 10 and the line slideway 551,552 being arranged along the horizontal and the sliding block being fixed on cross slide 513, so that cross slide 513 relative frames 10 can transversely reciprocatingly slide；The lower end of cross slide 513 passes through hinge 512 and centering drive link 511 One end is hinged, and the mover of the other end and centering driver 50 of centering drive link 511 is hinged, and it drives operation principle and bending Identical, i.e., the V-structure being made up of two centering drive links 511, to promote cross slide 513 along second straight of unit 2 Line guide rail slide block mechanism reciprocatingly slides in the horizontal with respect to frame 10.The quantity of first cross slide way slide block mechanism is two, point Sliding block 523,524 structures not by being fixed on the line slideway 526 on centering adjustment framework 53 top and being fixed on cross slide 513 Into, and the line slideway 525 being fixed on centering adjustment framework 53 bottom and be fixed on cross slide 513 sliding block 521, 522 are formed；Transversal driving mechanism includes centering servomotor 56, screw mandrel 57 and the driven nut engaged with screw mandrel 57, screw mandrel 57 It is installed in rotation on cross slide 513, driven nut is fixed on centering adjustment framework 53, so as to be driven by servomotor Dynamic screw mandrel 57 rotates and drives the centering adjustment relatively transverse slide plate 513 of framework 53 to move.

Referring to Fig. 1, Fig. 2, Fig. 3 and Figure 10, core rod unit 11 is including the mandrel holder 110 in frame 10 and detachably Ground is attached to the bending plug 111 in plug mounting seat 110.Fine position machine is provided between plug mounting seat 110 and frame 10 Structure 112, plug mounting seat 110 is provided with four waist round hole 1101, by unscrewing the fixing bolt through waist round hole 1101, with logical Cross fine position mechanism 112 and adjust plug mounting seat 110 along the position of the long axis direction of waist round hole 1101.

Referring to Fig. 1 and Figure 12, feeding unit material 7 includes elevating mechanism, can transversely slided by cross slide way slide block mechanism Ground be arranged on elevating mechanism lift side on feeding crane 70, and for aid in treat bending workpieces from flat position overturn to The feeding rollover stand 711 of upright position.

Elevating mechanism includes four guiding mechanisms 72 and two lift actuators 73, and lift actuator 73 is that straight-line displacement is defeated Go out device；Guiding mechanism 72 is attached in frame 10 by connection framework 701, including the sliding block being fixed in connection framework 701 721 and it is engaged vertical guide 722 with sliding block 721.Cross slide way slide block mechanism include being fixed on the lower section of feeding crane 70 and The line slideway 741 and the sliding block 742 with being fixed in vertical guide 722 being arranged along the horizontal.

Nylon sheet 71 is fixed with feeding crane 70；Feeding rollover stand 711 is a L-type component, and it is adjacent to core rod unit 11 side is hinged on feeding crane 70 by hinge, and return unit is provided between L-type component and feeding crane 70, should Return unit is used to make the L-type component be reset to stop dog position as shown in figure 12, when feeding crane 70 is in the stop dog position When, the bending inner side of L-type component lies against the workpiece in nylon sheet 71 for backstop, and in the present embodiment, return unit is reset Torsion spring 7110.

Referring to Fig. 1, Figure 13 and Figure 15, plectrum unit 6 includes plectrum wheel 60, promotes the 60 top-down movement of plectrum wheel Actuator 61 and the actuator for promoting plectrum wheel 60 to be moved along insertion transverse reciprocating, two actuators are straight-line displacement output dress Put, rotating servo motor and the straight-line displacement output device of leading screw and nut mechanism composition are elected as in the present embodiment actuator 61, and It is cylinder to drive actuator of the plectrum wheel along insertion transverse shifting, and during plectrum, plectrum wheel 60 is around its installation axle rotation.

Referring to Fig. 1, Fig. 2, Figure 13 to Figure 16, plug unit 8 includes mounting seat 81, and drive installation seat 81 exists with respect to frame 10 The plug drive mechanism vertically moved with laterally doing two dimensional surface, the guiding mechanism being oriented to the inserted sheet process of PU pieces 80 83, and the PU pieces 80 of inclined arrangement after extraction are reset to the resetting-mechanism 84 along insertion lateral arrangement, insertion laterally refers to PU pieces transversely insert the direction in gap between the adjacent part to be curved of workpiece two.

The interval that PU pieces 80 are formed in the present embodiment limits piece, can select the material for being applicable hardness according to actual use operating mode Material be made the interval limit piece, by the spacing that the two of micro-channel heat exchanger adjacent flat tubes are bent between portion be limited to certain value with On, i.e., reduce product yield to prevent two flat tubes to be bonded to each other after bending.As shown in figure 15, every PU piece is U-shaped Structure.Two yoke ends 801 of the PU pieces 80 of U-shape structure are its fixing end, and concave part 802 is formed to plectrum wheel 60 in plectrum process In escape groove, bending part is provided with escape groove 803 to plug single rod 111 in bending process.

Plug drive mechanism includes the vertical support being slidably mounted in by cross slide way slide block mechanism in frame 10 82, vertical support 82 is promoted with respect to the transverse actuator that frame 10 slides laterally along insertion, and vertical actuator.

Mounting seat 81 is arranged on vertical support 82 by vertical guide slide block mechanism, and vertical actuator, which is used to promote, to be installed The relative vertical support 82 of seat 81 vertically slides.Vertical actuator is straight-line displacement output device, and in the present embodiment, it includes Servomotor 851, vertical leading screw 852 and driven nut 853, driven nut 853 is fixed by connecting rod 854 and mounting seat 81 to be connected Connect, servomotor 851 drives vertical screw mandrel 852 to rotate to drive the driven nut 853 being engaged with vertically by timing belt Move and drive mounting seat 81 to be moved back and forth on vertical.

Cross slide way slide block mechanism includes the line slideway 861 being fixed on base 100 and installed in the bottom of vertical support 82 Sliding block 862 on face；Transverse actuator is also straight-line displacement output device, in the present embodiment, it include servomotor 871, Horizontal leading screw 862 and nut 863, driven nut are fixed on the bottom surface of vertical support 82.Servomotor 861 passes through timing belt 864 driving cross lead screws 862 rotate and drive the driven nut being engaged with to laterally move and drive vertical support 82 in horizontal stroke Move back and forth upwards, drive installation seat 81 moves back and forth in the horizontal indirectly, that is, passes through vertical actuator and transverse actuator Cooperation and promote mounting seat 81 to do two dimensional surface movement in vertical plane.

Resetting-mechanism 84 includes vertically arranged pull bar 841, the rotating shaft 842 being installed in rotation in mounting seat 81, One end and pull bar 841 be hinged and connecting rod 843 that the other end is fixedly connected with rotating shaft 842, and return actuator 844, PU pieces 80 Fixing end is fixedly connected with the other end of rotating shaft 842.Pull bar 841 can be lifted by return actuator 844 in the course of work, so as to Drive rotating shaft 842 to rotate by connecting rod 843, and then drive the 842 axis rotation around the shaft of PU pieces 80 and be reset to transversely cloth Put；For pull bar 841 by two sections by the epimere bar 8411 that linkwork connects and hypomere bar 8412, one end of connecting rod 843 passes through hinge Axle 845 and hypomere bar 8412 are be hinged, and epimere bar 8411 is through the sets of holes of stop collar 846 to limit its swing in the horizontal Position；The stator of return actuator 844 is hinged on connecting seat 847 by hinge, and mover is be hinged with epimere bar 8411；Connecting seat 847 are fixedly connected with connecting rod 854.By clip claw mechanism, electromagnet mechanism, vacuum cup mechanism etc. it can be can control to capture/release Mechanism connection 841 and the mover of return actuator 844 of pull bar 041 are put, to realize that return actuator 844 carries in reseting procedure Pull bar 841 is drawn to pull bar 841 lift the function of constraint in bending process release to reset PU pieces 80, in the present embodiment In, elect return actuator 844 as cylinder, can be by deflating cylinder to realize to its mover and the pull bar being attached thereto 841 Lifting constraint so that PU pieces 80 be floating ground be arranged on mounting seat 81, i.e., in bending process, rotating shaft 842 can be with PU pieces 80 Tilt and rotate, to reduce deformation of the PU pieces 80 in bending process and be easy to follow-up extraction to handle.

In the present embodiment, plectrum unit 6 is integrally mounted on vertical support 82, to be controlled by servomotor 871 Device its in lateral attitude, and in the course of the work, vertical support 82 is pressed on by cross slide way machine by the piston rod of cylinder 610 On structure 862, to improve its positional stability in the course of the work.

Referring to Fig. 1, Fig. 2, Fig. 3 and Figure 16, guiding mechanism 83 includes fishback 830 and promotes fishback 830 transversely past The transverse actuator 831,832 moved again and the vertical actuator vertically moved back and forth, fishback 830 are provided with two rows along perpendicular To the broach groove 8300 being evenly arranged for being passed through for being spaced restriction piece, fishback 830 is promoted vertically by vertical actuator Move and broach groove 8300 is aligned with PU pieces 80 to keep PU pieces 80 to be arranged along the horizontal, and pass through transverse actuator 831,832 Fishback 830 is promoted to laterally move and be oriented to PU pieces together, to ensure that it can insert micro-channel heat exchanger exactly Two flat tubes between gap in.In the present embodiment, vertical actuator is cylinder, can be by being deflated cylinder to realize Fishback 830 is in quick condition, so that fishback 830 can vertically carried out with the bending of PU pieces 80 in bending process Fine position.

Referring to Fig. 1, Fig. 2, Fig. 3 and Figure 16, for the projection of the bending place of workpiece after bending is handled to be carried out to force down place The pressure protrusion element 9 of reason, so that the height of projection after bending meets Design Requirement Drawing.Pressure protrusion element 9 is pacified by connecting plate On fishback 830, including briquetting 91, the driving briquetting by the side of plug 111 in core rod unit 11 are vertically reciprocal Mobile actuator 92, the mover for connecting actuator 92 and briquetting 91 L-type connector 93 and for L-type connector 93 along perpendicular To displacement carry out the guide rail slide block mechanism 94 of limition orientation, the line slideway in guide rail slide block mechanism 94 is fixed on L-type connection On part 93, actuator 92 is straight-line displacement output device.

Referring to Fig. 1 to Figure 17, the process of bending workpieces micro-channel heat exchanger progress bending is treated using bending equipment 1 to be included Feeding step S1, inserted sheet step S2, plectrum step S3, the step that pre-bends S4, inflection step S5, again paddle step S6, bending step Rapid S7 and blanking step S8.

Feeding step S1, by workpiece handling and overturn, decline so that its lower surface is resisted against supporting plate by feeding unit material 7 On 391, plug 111 is inserted in plug mounting seat 110, and plug 111 is located at the bending position of workpiece adjacent to workpiece bending The side of interior angle；Then control centering unit 5 acts with grip unit 3 and clamps workpiece centering.

Micro-channel heat exchanger was laterally fallen and lain against in nylon sheet 71, and its lower surface is resisted against feeding rollover stand On 711.Feeding crane 70 is manually promoted transversely to be moved to microchannel towards the direction close to grip unit 3 using handle 712 The lower end of heat exchanger is resisted against in nylon sheet 392, i.e., along insertion transverse shifting；Using feeding rollover stand 711, manually catch micro- logical The upper end of road heat exchanger, it is set to be overturn around the hinge of feeding rollover stand 711 to generally vertically arranging；Control lift actuator The lower end that 73 driving feeding cranes 70 drop to micro-channel heat exchanger is resisted against on supporting plate 391 and lifts workpiece；By plug 111 Insert in plug mounting seat 110, and plug 111 is located at the bending position of workpiece adjacent to the side of workpiece bending interior angle；Upper During material crane 70 is dropped to below workbench, work of the feeding rollover stand 711 in the elastic restoring force of reduction torsion spring 7110 It is reset to lower at stop dog position.

The clamping centering operational order inputted according to operating personnel by touch-screen,（1）Control unit controls main clamping machine Structure clamps, i.e. the upper main clamping device 302,303 of driving playbacks so that backing plate 43 can decline and pass through clamping pilot hole 3031, and under Main clamping device 306,307 is clamped to the bottom for holding workpiece；（2）Control centering unit 5 by touch-screen according to being inputted The lateral dimension of micro-channel heat exchanger and bending part are located at the position data in transverse direction, first pass through two servomotors 56 and work And while the spacing between the locating piece of left and right is more than workpiece lateral dimension, and spacing between left and right locating piece and plug 111 Difference meets offset relation between workpiece bending part and its center, then controls centering actuator 50 to act and promotes left and right to position Block moves towards the center of frame 10 and the position of micro-channel heat exchanger in the horizontal is adjusted and realizes centering, i.e. workpiece Bending part is in the opening position of plug 111；（3）Aid in clamping device 301,304 to be moved downward in control to clamp with lower auxiliary The size of Upward match workpiece is being erected by mechanism 305,308, and drives clamping actuator control clamping jaw to clamp micro-channel heat exchanger Upper and lower ends, to carry out auxiliary clamping to the location of workpiece；Then base plate unit 4 is controlled to drive backing plate 43 to move down with through upper master Clamping pilot hole on the clamping jaw of clamping device 302,303, and make workpiece between backboard 39 and backing plate 43；（4）Control auxiliary Help clamping device to open to discharge the auxiliary clamping to workpiece, then control the straight-line displacement output device action in backboard unit And backboard 39 is clamped in together with backing plate 43 on the two sides of workpiece and complete the clamping to workpiece, with backing plate 43, backboard 39 Whole plate face clamps to workpiece, effectively prevents workpiece from occurring undesirable deformation in bending process, while in this reality Apply in example be applicable to sizes from switch base plate and big backboard treat bending workpieces.

Inserted sheet step S2, between control inserted sheet unit 8 inserts PU pieces 80 between adjacent two flat tube of micro-channel heat exchanger In gap, that is, insert in the gap between two adjacent bending components of workpiece.

Transverse actuator in control plug drive mechanism drives PU pieces 80 to laterally move to the position of neighbouring workpiece, connects The position that control guiding mechanism 83 drives transverse actuator 831 to be moved to neighbouring workpiece, then in control plug drive mechanism Transverse actuator drive PU pieces 80 transversely to insert in the gap between two flat tubes of two micro-channel heat exchangers, that is, drive PU pieces 80 edge insertion transverse shiftings.

Plectrum step S3, the plectrum wheel 60 of control plectrum unit 6 are carried out from top to down to the flat tube of micro-channel heat exchanger Plectrum processing, i.e., carry out plectrum processing to workpiece.

The step that pre-bends S4, bending unit 2 is controlled by workpiece bending first angle.In the present embodiment, it is desirable to will be micro- logical 145 degree of road heat exchanger bending, i.e., predetermined bending angle are 145 degree, and it is 35 degree to make the angle after bending between both sides；First jiao Degree is typically less than equal to predetermined bending angle, preferably adjacent to predetermined bending angle, is elected as in the present embodiment equal to predetermined bending angle, I.e. first angle is 145 degree.

During pre-bending, because workpiece bending part clamps to PU pieces 80 and as bending deformation can tense PU pieces 80, It is required that the transverse actuator during pre-bending again in control plug drive mechanism drives PU pieces 80 transversely to move forward necessarily Distance, will generally push away 10 millimeters to 20 millimeters forward, and its service life is reduced to avoid PU pieces 80 from being tightened up.

Workpiece inflection second angle through pre-bends process, second angle are less than by inflection step S5, control bending unit 2 First angle.By inflection made under the operating mode of big bending angle, be easy to extract PU pieces, it is desirable to which inflection angle is less than first Angle, select elect second angle as 55 degree in the present embodiment, i.e., workpiece both sides angle is 90 degree after inflection.

Paddle step S6, control plug unit 8 extract interval from the workpiece handled through inflection and limit piece.

According to after bending PU pieces 80 generally ramped angle set, setting plug drive mechanism in transverse actuator with The ratio between drive displacement speed of vertical actuator, i.e., the ratio between the two is equal to the tangent value at PU pieces inclination angle, so as to apply to PU pieces The pulling force arranged along its incline direction, so that PU pieces 80 are pulled out approximately along its incline direction, in order to which be pulled out will not The problems such as bending.The inclination angle of PU pieces can be defaulted as to 45 degree and closer to various situations.

During paddle, driving comb plate 830 transversely retreats certain distance, to avoid PU pieces 80 in paddle process In depart from from the broach groove of fishback 830.

Bending step S7 again, bending unit 2 is controlled by the workpiece bending third angle handled through paddle to preset shape.Its In again bending step S7 can carry out once, i.e., by workpiece bending to angle be one-time-reach-place 35 degree of positions, also can be by twice More than bending and be 35 degree by workpiece bending angle position, i.e., in the present embodiment, third angle can be equal to 55 degree, also may be used Bending more than twice is carried out less than 55 degree, the size of third angle is configured according to actual use operating mode.

Blanking step S8, control grip unit 3 act and discharge the workpiece after bending, and by workpiece from bending equipment Carry undercarriage.

During control grip unit 3 discharges workpiece, by driving backboard 39 to move a certain distance backwards, and drive Backing plate 43 retreat with from clamping pilot hole 3031 in rise to clamping pilot hole 3031 it is decoupled, then driving go up main clamping device Clamping jaw open.

Then the lower end for controlling lift actuator 73 to drive feeding crane 70 to rise to micro-channel heat exchanger is resisted against Expect rollover stand 71, plug 111 manually removed from plug mounting seat 110, then manually pull feeding crane 70 and by product It is pulled away from bending arm.

After paddle is completed, reset processing can be carried out to the position of PU pieces 80, reset processing can be with bending step again together Carry out and save the time；It can also be carried out in follow-up process.

In above steps, wherein, inserted sheet step S2, plectrum step S3, the step that pre-bends S4, inflection step S5, pull out Piece step S6 and again bending step S7 perform to control each unit to cooperate by the control unit of bending equipment, other steps From manually with being completed with machine.

In the present embodiment, the mounting means that unit is arranged in frame 10 includes the installation side being directly fixedly connected Formula, in addition to the indirect mounting means by being also secured at unit and frame on pedestal.

In the present embodiment, vertically refer to along the axial arranged of plug 111, be laterally parallel to vertically for the flat of normal direction Face；In the present embodiment, vertically vertically arrange, and be laterally horizontal direction.

The central scope of the present invention is by setting up plug unit in the technology of existing bending equipment, in plectrum Unit carries out plectrum before processing to workpiece, in the restriction piece in insertion interval between being bent over part of workpiece, and at workpiece is through plectrum Reason limits piece with extracting interval after the processing of bending at least once, to prevent two adjacent bending components from occurring after bending in workpiece to be bonded The problem of, effectively improve the yields that workpiece bending is handled；According to this design, bending unit, grip unit, core rod unit, The structure of centering unit and plectrum unit is not limited to knot of the above-described embodiment disclosed in documents listed by background technology Structure, also a variety of obvious changes；In addition, the structure for plugging unit, it is for interval to be limited into piece along insertion In gap between the adjacent part to be curved of laterally inserted workpiece two, and in plectrum processing with pulling out interval restriction piece after bending processing Go out, i.e., only need to ask its can control for installation interval limit piece mounting seat can carry interval limit piece insertion laterally with it is perpendicular Do two-dimensional movement to both direction, its concrete structure is not limited to the structure in above-described embodiment, it is also a variety of aobvious and The change being clear to.

Claims (10)

1. a kind of bending equipment, including frame and grip unit, core rod unit, plectrum unit and folding in the frame Curved unit, it is characterised in that：

The bending equipment also includes being used to carry out plectrum before processing to workpiece in the plectrum unit, and portion is bent in workpiece Insertion interval limits piece, and the plug for limiting piece with extracting interval after the processing of bending at least once through plectrum processing in workpiece between part Unit.

2. bending equipment according to claim 1, it is characterised in that：

The plug unit includes floating ground and is provided with the mounting seat that interval limits piece, drives the relatively described frame of the mounting seat The plug drive mechanism of two dimensional surface motion is vertically laterally being done with insertion, and the interval for extracting rear-inclined arrangement is limited into piece and answered Position is extremely along the resetting-mechanism of the insertion lateral arrangement；

Described is vertically along axial arranged parallel to the plug in the core rod unit.

3. bending equipment according to claim 2, it is characterised in that：

The resetting-mechanism is included along the pull bar being vertically arranged, the rotating shaft being installed in rotation in the mounting seat, and one Connecting rod be hinged with the pull bar and that the other end is fixedly connected with one end of the rotating shaft is held, and for being lifted in reseting procedure The pull bar is so that reseting interval limits piece and to the pull bar lift the return actuator of constraint in bending process release；Between It is fixedly connected every the fixing end for limiting piece with the other end of the rotating shaft.

4. bending equipment according to claim 3, it is characterised in that：

Interval limits piece as U-shape structure, and the return actuator is cylinder；

Two yoke ends of the U-shape structure are its fixing end, and concave part is formed to the plectrum wheel in the plectrum unit in plectrum During escape groove, bending part is provided with escape groove to the plug in the core rod unit in bending process.

5. bending equipment according to claim 2, it is characterised in that：

The plug unit also includes the guiding mechanism that interval is limited the insertion process of piece and is oriented to, the guiding mechanism bag Include fishback, the transverse actuator that the promotion fishback moves along the insertion transverse reciprocating and for driving the fishback Along described vertically movable and the fishback is driven in bending process release constrained so that it is floating type on vertical The vertical actuator of state；

The fishback is provided with the broach groove for limiting piece for interval and passing through.

6. bending equipment according to claim 1, it is characterised in that：

Also include being used for the pressure protrusion element that the projection of the bending place of workpiece after bending is handled force down to processing, the pressure Protrusion element includes the briquetting by the plug side in the core rod unit and drives the briquetting vertically back and forth to be moved along described Dynamic actuator.

7. according to the bending equipment described in any one of claim 1 to 6 claim, it is characterised in that：

The grip unit include laterally floating mounting bracket and upper main clamping device on the laterally floating mounting bracket, Upper auxiliary clamping device, lower main clamping device, lower auxiliary clamping device, backboard unit and base plate unit, the laterally floating peace Shelving can laterally slidably be arranged on the bending arm in the bending unit along floating；

The upper auxiliary relatively described laterally floating mounting bracket of clamping device can be slided vertically to match pre- clamping workpiece perpendicular Upward size；The backboard unit includes backboard, and the lower end of the backboard is provided with the supporting plate for the pre- clamping workpiece of holding；Institute Stating base plate unit includes backing plate and drives backing plate edge clamping horizontal and the vertically movable driver；The upper main folder is held Mechanism and the lower main clamping device are used to clamp the both ends of the backing plate to clamp between the backboard and the backing plate Workpiece.

8. bending equipment according to claim 7, it is characterised in that：

The grip unit is also included described in the vertical slide plate that can vertically slide of relatively described laterally floating mounting bracket and driving The actuator that vertical slide plate vertically moves, the backboard can laterally slidably be arranged on institute by guiding mechanism along the clamping State on vertical slide plate, the backboard unit includes being used to drive the relatively described vertical slide plate of the backboard laterally sliding along the clamping Dynamic driver；

Clamping device includes clamping actuator, transfer lever and clamping jaw；The force side of the transfer lever activates with the clamping The mover of device is hinged, and the clamping jaw is fixedly connected with composition with the force side of the transfer lever and is used to be fastened on to be deviated from by holder Hook-like configuration on the side of the bending arm；

The clamping jaw of the upper main clamping device is provided with the clamping pilot hole inserted from top to bottom for the backing plate.

9. according to the bending equipment described in any one of claim 1 to 6 claim, it is characterised in that：

Also include feeding unit material；

The feeding unit material includes the elevating mechanism being fixed in the frame, can be horizontal along insertion by cross slide way slide block mechanism To the feeding crane being slidably mounted on the lift side of the elevating mechanism, and for aiding in treating bending workpieces from keeping flat position Upset is put to the feeding rollover stand of vertical position；

The feeding rollover stand is hinged on the feeding crane adjacent to one end of the core rod unit by hinge.

10. according to the bending equipment described in any one of claim 1 to 9 claim, it is characterised in that the bending equipment Control unit includes processor and memory, and the memory storage has computer program, and the computer program is by the place Reason device can realize following step when performing：

Pre-bend step, controls the bending unit by workpiece bending first angle；

Inflection step, control the bending unit that the workpiece inflection second angle through pre-bends process, the second angle is small In the first angle；

Paddle step, control the plug unit to extract interval from the workpiece handled through inflection and limit piece；

Bending step again, the bending unit is controlled by the workpiece bending third angle handled through paddle to preset shape.