CN207238834U - A kind of bending equipment - Google Patents

Abstract

A kind of bending equipment is the utility model is related to, belongs to bending processing technology field.Bending equipment includes rack 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 component of workpiece, and in workpiece；Bending unit is used for workpiece bending to predetermined bending angle.By adding 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

Bending machining equipment is the utility model is related to, specifically, is related to a kind of for being rolled over to workpiece such as evaporators The bending equipment of crook reason.

Background technology

Disclose a kind of bending equipment in the patent document of Publication No. CN104668396A, including rack and installed in this It is used for the grip unit of clamping workpiece in rack, for being inserted into 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 hinged left folding curved boom of bending shaft 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, starts 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 There are the problem of flat tube fitting in heat exchanger after bending is handled, 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.

Utility model content

The purpose of this utility model is to provide a kind of bending equipment, by being improved to its structure, to improve to evaporation The workpiece such as device carry out the yields of bending processing.

To achieve these goals, the utility model, which provides the improved bending equipment of structure, includes rack and installed in rack On grip unit, core rod unit, plectrum unit, bending unit with plug unit；Grip unit is used for clamping workpiece；Plug list Member 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 In to workpiece progress plectrum processing；Plug unit to be used to carry out plectrum before processing to workpiece in plectrum unit, rolled in workpiece Insertion interval limits piece between turn of bilge 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 added on bending equipment plug unit to be improved to its structure so that plectrum unit to workpiece into Row plectrum before processing, piece is limited at the insertion interval between component 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 component 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 base for limiting piece, and drive installation seat is opposite Rack is vertically laterally doing the plug driving mechanism of two dimensional surface movement 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.

During the work time, by plugging driving mechanism workpiece quilt is inserted into so that interval restriction piece is moved to insertion position Between bending part, in workpiece after plectrum processing and bending processing, positioned at the part interval that is bent in component limit sector-meeting with Be bent over the inclination in portion and be in tilted layout, and floating mount be conducive to interval limit piece it is overall with this be in tilted layout process and Change, carry out extracting interval restriction piece so as to be conducive to the follow-up plug driving mechanism using 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 includes vertically arranged pull rod for resetting-mechanism, is installed in rotation in mounting base Shaft, one end and pull rod be hinged and connecting rod that the other end is fixedly connected with shaft, and for lifting pull rod in reseting procedure With reseting interval limits piece and the return actuator of lifting constraint is carried out to pull rod in bending process release；Interval limits consolidating for piece Fixed end is fixedly connected with the other end of shaft.Disposably resetted easy to limit piece to all intervals by pull rod.

Specific scheme is that interval limits piece as U-shaped structure again, and return actuator is cylinder；Two yoke ends of U-shaped structure For its fixing end, concave part, which is formed, is equipped with to core 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 by selecting the interval of the structure to limit piece 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 movement of the piston in cylinder body, in order to realize bending process release to drawing Bar carries out lifting constraint.

More specifically scheme further includes the leading of being oriented to of insertion process for limiting interval piece for plug unit for another To mechanism, which includes fishback, the transverse actuator that promotion fishback transversely moves back and forth and is 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 equipped with the broach groove for limiting piece for interval and passing through.With improve interval limit piece insertion efficiency with Accuracy rate, especially selects soft material when interval limits piece.

Another specific scheme is further included for by the protrusion of the bending place of workpiece after bending is handled for bending equipment 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 includes laterally floating mounting bracket and on laterally floating mounting bracket for grip unit 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 installed 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 equipped 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 adjusting the position of upper auxiliary clamping device on vertical, 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, since 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 replacement to clamping device Part.

Preferred scheme further includes the vertical slide plate that relatively transverse floating mount frame can be slided vertically for grip unit And the actuator that the vertical slide plate of driving vertically slides, backboard can be laterally slidably installed 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 clamping piece on the side of bending arm；Upper main folder The clamping jaw for holding mechanism is equipped with the clamping pilot hole being inserted into 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 to further include feeding unit material；Feeding unit material includes the elevating mechanism being fixed in rack, The feeding crane that can be laterally slidably installed 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 shaft on feeding crane.Easy to carry out feeding to large-scale workpiece, bending efficiency is improved.

Brief description of the drawings

Fig. 1 is the stereogram of the utility model embodiment；

Fig. 2 is the A partial enlarged views of Fig. 1；

Fig. 3 is the B partial enlarged views of Fig. 1；

Fig. 4 is the stereogram of bending unit in the utility model embodiment；

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

Fig. 6 is the C partial enlarged views of Fig. 5；

Fig. 7 is the D partial enlarged views of Fig. 5；

Fig. 8 is grip unit and solid of the right folding curved boom after backboard and nylon sheet is omitted in the utility model embodiment Figure；

Fig. 9 is the stereogram of base plate unit in the utility model embodiment；

Figure 10 is the stereogram of rack, centering unit and plug mounting base in the utility model embodiment；

Figure 11 is the E partial enlarged views of Figure 10；

Figure 12 is the stereogram of feeding unit material in the utility model embodiment；

Figure 13 is the stereogram that plectrum unit in the utility model embodiment, plug unit and interval limit piece；

Figure 14 is the F partial enlarged views of Figure 13；

Figure 15 is the G partial enlarged views of Figure 13；

Figure 16 is pilot unit and the stereogram of pressure protrusion element in the utility model embodiment；

Figure 17 is the work flow diagram for carrying out bending processing to workpiece using the utility model embodiment.

Embodiment

With reference to embodiments and its attached drawing the utility model is described in further detail.

Embodiment

Referring to Fig. 1, the utility model bending equipment 1 includes rack 10, control unit and the bending in rack 10 Unit 2, grip unit 3, centering unit 5, core rod unit 11, plectrum unit 6, feeding unit material 7, plug unit 8 and belling rise single Member 9.

Control unit is not shown in the accompanying drawings, it includes processor, memory and the control on ground or rack 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 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 shaft 29.Two bending line slideways are arranged along the horizontal.

Left folding curved boom 27 is installed in rotation in rack 10 with 28 upper and lower ends of right folding curved boom by bending shaft 29；It is left One end of bending connecting rod 25 is hinged with bending slide unit 22, and the other end is hinged with left folding curved boom 27；One end of right folding curved rod 26 with Bending slide unit 22 is hinged, and the other end is 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 22 side of bending slide unit 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 installed in rack 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 rack 10.Bending servomotor 20 drives bending screw 21 to rotate by synchronous belt, so as to promote therewith The driven nut for engaging and being installed on 22 lower surface of bending slide unit, and then promote bending slide unit 22 to be slided along line slideway, and Pull/push on two bending arms by bending connecting rod and rotated around bending shaft 29 and be unfolded or convert into realize, in the present embodiment, two A 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 installed 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 installed 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 installed 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 installed on right bent over arms 28 bottom on, by clamping device, Backboard unit and the interoperation of base plate unit are solid micro-channel heat exchanger to be located to the clamping of the Workpiece structure of its bending part both sides It is scheduled in corresponding 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 installed on right folding curved boom 28 as shown in Figure 4, left base plate unit 42 is installed 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 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 installing whole right base plate unit to You An mechanisms On mounting base 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 46 both sides of cross slide and it is fixed in mounting base 44 and is led with straight line The matched sliding block 452 of rail 451, the horizontal stator for pushing away actuator are fixedly connected with mounting base 44, and mover is fixed with cross slide 46 Connection, so as to promote cross slide 46 transversely to be moved back and forth with respect to mounting base 44；The horizontal actuator that pushes away may be selected from linear motor, 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 sequentially connected by retarder 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 component on laterally floating mounting bracket 31 can float in bending process , there is undesirable deformation, laterally floating mounting bracket 31 to reduce workpiece in the left and right floating with the progress of bending process in transverse direction Including two vertical guide groove bars 311,312 being arranged parallel to and the vertical straight being installed on vertical 312 lateral surface of guide groove bar 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 matched T-shaped lateral edge portion of guide groove, as shown in Figure 7, the shape on vertical guide groove bar 311 Into there is T-shaped guide groove 3111, the relative motion between vertical slide plate 32 and laterally floating mounting bracket 31 is constrained and is 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 Driving mechanism drives it vertically to reciprocatingly slide with respect to bending arm 28, and the vertical driving mechanism is electric including servomotor and with servo The leading screw and nut mechanism 332 that machine is sequentially connected.

Upper main clamping device 303, lower main clamping device 307 and lower auxiliary clamping device 308 are fixed horizontal by its mounting base 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 is moved, and pass through hand Dynamic formula fixture 341 locks 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 base 384, clamping jaw 380, transfer lever 381 and clamping actuator 382；The fulcrum of transfer lever 381 passes through hinge shaft 383 It is hinged in mounting base 384；The stator of clamping actuator 382 is hinged in mounting base 384 by hinge shaft 386, and mover passes through hinge Axis 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 installed on laterally by its mounting base 384 On floating mount frame 31.

Transfer lever 381 is boosting lever；Clamping actuator 382 may be selected from cylinder, oil cylinder, linear motor isoline displacement Output device, the present embodiment elect cylinder as, during the work time, are promoted by the stretching motion of cylinder piston rod opposing cylinder Transfer lever 381 is rotated around hinge shaft 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 driving cylinder 3071, and upper main clamping device 303 includes clamping driving cylinder 3031.

Right base plate unit 41 by its mounting base 44 by the installation 3110 arranged on 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 arranged on upper main clamping device 303, until entering and lower main 307 phase of clamping device At the 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 equipped with supporting plate 391, backboard 39 is installed 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 32 edge of slide plate 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 driving cylinder 352, T-shaped company Fitting 353, wedge block 354 and wedge block 355, wherein, driving 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 installed on laterally floating mounting bracket 31 by guiding rail mechanism along floating；In T-shaped connector Wedge-shaped bootstrap block 3531,3532, the opposite 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 form oblique with wedge-shaped bootstrap block 3531,3532 respectively The matched lozenges in face, so that during T-shaped connector 353 slides laterally along floating, promotes 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 rack 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 111 side of plug 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 rack 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, details are not described herein.

Referring to Figure 10 and Figure 11, left centering unit 501 includes cross slide 513, first cross slide way slide block mechanism, centering Adjustment frame 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 frame 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 opposite racks 10 can transversely reciprocatingly slide；The lower end of cross slide 513 passes through hinge shaft 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, 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 rack 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 53 top of centering adjustment frame and being fixed on cross slide 513 Into, and the line slideway 525 being fixed on centering adjustment frame 53 lower part and be fixed on cross slide 513 sliding block 521, 522 are formed；Transversal driving mechanism includes centering servomotor 56, screw 57 and the driven nut engaged with screw 57, screw 57 It is installed in rotation on cross slide 513, driven nut is fixed on centering adjustment frame 53, so as to be driven by servomotor Dynamic screw 57 rotates and drives the centering adjustment relatively transverse slide plate 513 of frame 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 rack 10 and detachably Install to the bending plug 111 in plug mounting base 110 on ground.Fine position machine is equipped between plug mounting base 110 and rack 10 Structure 112, plug mounting base 110 is equipped 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 base 110 along the position of 1101 long axis direction of waist round hole.

Referring to Fig. 1 and Figure 12, feeding unit material 7 includes elevating mechanism, can transversely be slided by cross slide way slide block mechanism Ground be installed 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 defeated for straight-line displacement Go out device；Guiding mechanism 72 is installed to rack 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, it is adjacent to core rod unit 11 side is hinged on feeding crane 70 by hinge shaft, and return unit is equipped 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 Torsional 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 The actuator for driving plectrum wheel edge insertion transverse shifting is cylinder, 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 base 81, and drive installation seat 81 exists with respect to rack 10 The plug driving 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 are transversely inserted into the direction in gap between the adjacent component 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 in 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-shaped structure are its fixing end, and concave part 802 is formed to plectrum wheel 60 in plectrum process In escape groove, bending part is equipped with escape groove 803 to plug single rod 111 in bending process.

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

Mounting base 81 is installed on vertical support 82 by vertical guide slide block mechanism, and vertical actuator, which is used to promote, to be installed The opposite 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 base 81 to be connected Connect, servomotor 851 drives vertical screw 852 to rotate to drive the driven nut 853 being engaged with vertically by synchronous belt Move and drive mounting base 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 82 bottom of vertical support 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 synchronous 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 base 81 to do two dimensional surface movement in vertical plane.

Resetting-mechanism 84 includes vertically arranged pull rod 841, the shaft 842 being installed in rotation in mounting base 81, One end and pull rod 841 be hinged and connecting rod 843 that the other end is fixedly connected with shaft 842, and return actuator 844, PU pieces 80 Fixing end is fixedly connected with the other end of shaft 842.Pull rod 841 can be lifted by return actuator 844 in the course of work, so that Drive 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 rod 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 Axis 845 and hypomere bar 8412 are 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 shaft, and mover is 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 rod 041 are put, to realize that return actuator 844 carries in reseting procedure Pull rod 841 is drawn to carry out the function of lifting constraint to pull rod 841 in bending process release to reset PU pieces 80, in the present embodiment In, elect return actuator 844 as cylinder, can be realized by deflating to cylinder to its mover and the pull rod being attached thereto 841 Lifting constraint so that PU pieces 80 are installed on mounting base 81 for floating ground, i.e., in bending process, shaft 842 can be with PU pieces 80 Tilt and rotates, to reduce deformation of the PU pieces 80 in bending process and easy to follow-up extraction processing.

In the present embodiment, plectrum unit 6 is integrally mounted on vertical support 82, to be controlled by servomotor 871 Device its in lateral position, and during the work time, 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 during the work time.

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 equipped with two rows of 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 be inserted into micro-channel heat exchanger exactly Two flat tubes between gap in.In the present embodiment, vertical actuator is cylinder, can be realized by deflating to cylinder 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 protrusion 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 111 side of plug 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 is overturn, declined so that its lower face is resisted against supporting plate by feeding unit material 7 On 391, plug 111 is inserted into plug mounting base 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 was lain against in nylon sheet 71, and its lower face 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, makes it be overturn around the hinge shaft 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 It is inserted into plug mounting base 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 7110 elastic restoring force of reduction torsion spring 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 10 center of rack and the position of micro-channel heat exchanger in the horizontal is adjusted and realizes centering, i.e. workpiece Bending part is at the 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 to pass 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 workpiece, effectively prevents workpiece from occurring undesirable deformation in bending process, while in this reality Apply and select switch base plate and big backboard in example and be applicable to sizes treats bending workpieces.

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

Transverse actuator in control plug driving 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 driving mechanism Transverse actuator drive PU pieces 80 to be transversely inserted into 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 carry out the flat tube of micro-channel heat exchanger from top to down Plectrum processing, i.e., carry out plectrum processing to workpiece.

The step that pre-bends S4, controls bending unit 2 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, since workpiece bending part clamps 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 driving mechanism drives PU pieces 80 transversely to move forward necessarily Distance, usually will be to being pushed forward 10 millimeters to 20 millimeters, to avoid PU pieces 80 are tightened up and reduce its service life.

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, easy to which PU pieces are extracted, it is desirable to which inflection angle is less than first Angle, selects 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 driving 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, controls bending unit 2 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 base 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 installed in rack 10 includes the installation side being directly fixedly connected Formula, further includes the indirect mounting means by being also secured at unit and rack 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 utility model be by adding plug unit in the technology of existing bending equipment, for Plectrum unit carries out plectrum before processing to workpiece, in the restriction piece in insertion interval between being bent over component of workpiece, and in workpiece through dialling Piece processing limits piece with extracting interval after the processing of bending at least once, to prevent workpiece from occurring two adjacent bending components after bending The problem of fitting, effectively improve the yields of workpiece bending processing；According to this design, bending unit, grip unit, plug list The structure of member, centering unit and plectrum unit is not limited to disclosed in documents listed by above-described embodiment and background technology Structure, also has a variety of obvious changes；In addition, the structure for plugging unit, it is to be inserted for interval to be limited piece edge Enter in the gap between the adjacent component to be curved of laterally inserted workpiece two, and interval is limited into piece after plectrum processing is handled with bending and is pulled out Go out, i.e., only need to ask its can control for installation interval limit piece mounting base 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, also have it is a variety of aobvious and The change being clear to.

Claims (9)

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

The bending equipment is further included for carrying 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 base that interval limits piece, drives the relatively described rack of the mounting base The plug driving mechanism of two dimensional surface movement is vertically laterally being done with insertion, and the interval for extracting rear-inclined arrangement is limited into piece and is 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 rod being vertically arranged, the shaft being installed in rotation in the mounting base, and one Connecting rod hinged with the pull rod and that the other end is fixedly connected with one end of the shaft is held, and for being lifted in reseting procedure The pull rod is with reseting interval limits piece and the return actuator of lifting constraint is carried out to the pull rod in bending process release；Between It is fixedly connected every the fixing end for limiting piece with the other end of the shaft.

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

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

Two yoke ends of the U-shaped 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 equipped 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 further 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 is moved along the insertion transverse reciprocating and for driving the fishback Along described vertically movable and the fishback is driven in bending process release constrains so that it is floating type on vertical The vertical actuator of state；

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

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

Further include the pressure protrusion element for the protrusion 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 installed 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 equipped 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 further included described in the vertical slide plate that relatively described laterally floating mounting bracket can slide vertically and driving The actuator that vertical slide plate vertically moves, the backboard can laterally slidably be installed 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 is activated 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 clamping piece Hook-like configuration on the side of the bending arm；

The clamping jaw of the upper main clamping device is equipped with the clamping pilot hole being inserted into 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：

Further include feeding unit material；

The feeding unit material includes the elevating mechanism being fixed in the rack, 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 shaft.