CN207357850U - A kind of common curved CNC tube bending machine in left and right - Google Patents

Abstract

A kind of left and right curved CNC tube bending machine altogether is the utility model is related to, belongs to tubular object extruding processing technology field.Wherein, CNC tube bending machine includes rack, control unit and the swan neck system and feeding trolley controlled in rack and by control unit, and swan neck system includes head, guided mode unit and mold changing unit；Head includes mounting base and the left Pipe Elbow Element in mounting base and right Pipe Elbow Element, and Pipe Elbow Element includes circle mould, swing arm, bend pipe driver and the clamping in swing arm；Mold changing unit is driven head to be moved up with respect to rack perpendicular to the transverse direction for treating elbow member axial direction with perpendicular by control unit control, CNC tube bending machine is switched between left curved operating mode and right curved operating mode.The switching of left and right Pipe Elbow Element is realized by changing the mold unit, to improve bending quality, can be widely applied in the fields such as air-conditioning, aviation.

Description

A kind of common curved CNC tube bending machine in left and right

Technical field

Tubular object extruding equipment is the utility model is related to, specifically, is related to a kind of left and right curved CNC tube bending machine altogether.

Background technology

CNC tube bending machine is widely used in the industrial circles such as air-conditioning, automobile, ship, aerospace, mainly including rack, control Unit processed and feeding trolley, guided mode unit and the head controlled in rack by control unit, are provided with use on head In the control circle mould of elbow radius, swing arm and it is used for together with circle mould in swing arm the clamping for clamping pipe fitting.By bending side To difference, be divided into left curved bending machine, right curved bending machine and left and right and be total to curved bending machine, left and right is total to curved bending machine and commonly uses In the bending operation of complex pipeline.

Publication No. is to disclose one kind in the patent document of CN101817038A to be used to build left and right curved numerical controlled bending of pipe altogether The bending mechanism of machine, including bearing, the swiveling gear being installed in rotation on bearing, for driving the motor of swiveling gear, The rotary support being slidably mounted on swiveling gear, the left centration axis being slidably mounted in by sliding block on rotary support With right centration axis, left centration axis, the left axis pin in right centration axis, right axis pin are selectively stretched into, and it is correspondingly connected fixed on a left side Left bending die, right bending die in mandrel, right centration axis；Swivel chute is equipped with the side of rotary support, it is solid on swiveling gear Equipped with the driving lever stretched into swivel chute；During the work time, by being selectively connectable with doing centration axis and left axis pin or right fixed Mandrel and right axis pin and realize the switching of rotating shaft, to reach using one in left bending die, right bending die to justify mould, and another one To justify mould, so as to be switched between left curved operating mode and right curved operating mode.Though its can realize left and right altogether it is curved, its in order to Swiveling gear can be avoided to cause to interfere to bend pipe process, it is desirable to which two centration axis in height will be away from swiveling gear, at the same time Swing arm and the clamp die mechanism in swing arm can not be configured, the unstable of whole swan neck system is easy to cause and influences bend pipe matter Amount.

Utility model content

The purpose of this utility model is to provide one kind left and right curved CNC tube bending machine altogether, to improve the bend pipe of the common bend pipe in left and right Quality.

To achieve these goals, curved CNC tube bending machine includes rack, control list altogether for left and right provided by the utility model Member and the swan neck system and feeding trolley controlled in rack and by control unit, swan neck system include head, guided mode list Member and mold changing unit；Head includes mounting base and the left Pipe Elbow Element in mounting base and right Pipe Elbow Element, Pipe Elbow Element Including circle mould, swing arm, bend pipe driver and the clamping in swing arm；Mold changing unit is driven head by control unit control Moved up with respect to rack perpendicular to the transverse direction for treating elbow member axial direction with perpendicular, make CNC tube bending machine in left curved operating mode and the right side Switch between curved operating mode.

In CNC tube bending machine, by change the mold unit drive head perpendicular to treat the transverse direction of elbow member axial direction with vertically on It is mobile, and it is aided with the action of guided mode unit and Pipe Elbow Element, to realize the switching of the two bend pipe patterns in left and right, i.e., in mold changing process In only mobile head and keep pipe fitting motionless in the horizontal, so as to be configured using the prior art to Pipe Elbow Element, to carry The quality of the high common bend pipe bending in left and right；Pipe fitting remains stationary state during mold changing at the same time, it is partially long and firm to can effectively avoid length Spend relatively low pipe fitting occur because of mold changing it is undesirable rock, further ensure that bending quality.Furthermore due to using twin elbow list Member arrangement, can on same unit the differently curved radius of arranging multiplayer circle mould, with meet more working condition requirements and improve bend pipe Shaping efficiency.

Specific scheme is that the circle mould in same Pipe Elbow Element is total to drive shaft with swing arm.Effectively ensure that round mould exists with clamping During bend pipe while being synchronized with the movement, further reduce parts and improve overall compactedness.

More specifically scheme for two swing arms with drive shaft the keeping parallelism cloth during being driven by bend pipe driver Put.During effectively ensuring that bend pipe, another swing arm causes to interfere to bend pipe process.

More specifically scheme passes through chain drive or gear drive between drive shaft and bend pipe driver for another.Effectively Ensure the transmission accuracy between the two.

Specific scheme is that the circle mould in same Pipe Elbow Element is total to drive shaft with swing arm again, and two drive shafts are by bend pipe Driver drives and isogonism speed rotates.Effectively ensure round mould and clamping during bend pipe while being synchronized with the movement, it is ensured that two The uniformity of a Pipe Elbow Element bend pipe process.

Another specific scheme is installed in mounting base for guided mode unit, including cloth-guiding base, right curved guided mode, left curved guided mode And two-dimentional driving mechanism, two-dimentional driving mechanism driving cloth-guiding base is transversely moved back and forth in two round intermodes and reciprocal shifting vertically It is dynamic；Right curved guided mode is accordingly installed in the both sides of cloth-guiding base with left curved guided mode.By above-mentioned configuration, share two Pipe Elbow Elements A set of guided mode mechanism, efficiently reduces amount of parts, while whole guided mode unit is installed in mounting base, to change the mold Pipe fitting, simplify control step are synchronously avoided in journey.

Another specific scheme is equipped with clamping driving mechanism between clamping and swing arm, and clamping driving mechanism includes clamping Seat, reinforcement rocking bar, reinforcement connecting rod, boosting lever and actuator, clamping seat can arcuately guide rail be slidably mounted in swing arm；Increase The fixing end of power rocking bar is hinged with swing arm, and swinging end is hinged with actuator mover；The fulcrum of boosting lever is hinged in swing arm, is applied Power end is hinged with clamping seat；One end of reinforcement connecting rod and the swinging end of reinforcement rocking bar are hinged, the stress of the other end and boosting lever End is hinged；Arc-shaped guide rail and the swing camber line iso-curvature radius of force side.The power of actuator output, connects through reinforcement rocking bar and reinforcement After the amplification of bar level-one, then through boosting lever progress two level amplification, and it is applied to by clamping seat in clamping, effectively ensures that folder Mould is with circle mould to the clamping force of pipe fitting and the stability of clamping.In addition, when clamping opens release plumbing component with circle mould, clamping seat Understand arcuately guide rail and pull clamping down to move back and avoided to pipe fitting, effectively avoid producing interference to the subsequent action of pipe fitting Influence.

More specifically scheme is equipped with the side directing plate for being clamped in clamping seat both sides for swing arm, and arc-shaped guide rail is arranged on side Arc chute on the directing plate of face, is respectively provided with and the matched sliding block of arc chute on the both sides of clamping seat.Guided by both sides The movement progress of plate and arc-shaped guide rail to clamping seat is spacing, effectively ensures that the stability of clamping seat movement, i.e. clamping is clamping With the stability during release plumbing component.

Another more specifically scheme to be hinged with the guiding swing rod of more than one in swing arm, guide swing rod swinging end and Clamping seat is hinged, and guides the swinging track of the swinging end of swing rod to form arc-shaped guide rail；Guiding swing rod was being swung with boosting lever Keeping parallelism is arranged in journey.Combined by swing rod with boosting lever to form hyperbolic handle structure, i.e. boosting lever forms clamping The seat actuator that arcuately guide rail moves, and form the spacing guiding piece of its movement locus.

Preferable scheme is driven for left Pipe Elbow Element with right Pipe Elbow Element by same bend pipe driver is synchronous.Based on same curved Pipe driver synchronously driving two Pipe Elbow Elements, with ensure left and right altogether curved power uniformity while, reduce parts simultaneously improve Overall compactedness.

Brief description of the drawings

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

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

Fig. 3 is the stereogram of head in the utility model embodiment 1；

Fig. 4 is the B partial enlarged views in Fig. 3；

Fig. 5 is the front view of Pipe Elbow Element in the utility model embodiment 1；

Fig. 6 is the stereogram of guided mode unit in the utility model embodiment 1；

Fig. 7 is the stereogram that unit is changed the mold in the utility model embodiment 1；

Fig. 8 is feeding trolley and the stereogram of rack in the utility model embodiment 1；

Fig. 9 is the stereogram of clamp die mechanism in the utility model embodiment 2；

Figure 10 is the front view of clamp die mechanism in the utility model embodiment 2；

Figure 11 is the process schematic that clamping switches to clamp position from release conditions in the utility model embodiment 2；Its In, structure chart when Figure 11 (a) is in release conditions, structure chart when Figure 11 (b) is in an interim state, Figure 11 (c) is Structure chart during in clamp position；

Figure 12 is lever in the utility model embodiment 3, clamping seat and the structure diagram for guiding swing rod.

Embodiment

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

Embodiment 1

Referring to Fig. 1 and Fig. 2, this CNC tube bending machine 1 includes rack 11, control unit and being controlled by this in rack 11 The swan neck system and feeding trolley 8 of unit control processed；Wherein, swan neck system includes head 2, guided mode unit 6 and mold changing unit 7. In following descriptions to concrete structure, it is pipe fitting of the clamping in the feeding main shaft of feeding trolley 8 to treat elbow member, in this implementation In example, since feeding main shaft is arranged in the horizontal direction, the axial direction for making to treat elbow member is to arrange in the horizontal direction.

In the present embodiment, control unit includes processor, memory and touch control board 12, and processor is controlled by touching Making sheet 12 receives the input instruction of operating personnel, while is stored in the computer program in memory by execution to control bend pipe Device acts with feeding trolley 7 and performs the operation such as bend pipe, switching.

Referring to Fig. 2 and Fig. 3, head 2 includes mounting base 20 and bend pipe motor 22, left Pipe Elbow Element in mounting base 20 3 with right Pipe Elbow Element 4.

Now by taking right curved unit 4 as an example, the structure of Pipe Elbow Element is illustrated, as shown in Figures 4 and 5, right Pipe Elbow Element 4 Including circle mould 41, circle mould 42, circle mould 43, drive shaft 44, swing arm 45 and the clamp die mechanism 5 in swing arm 45.

Drive shaft 44 is installed in rotation in mounting base 20 by bearing 401,402, will whole right bend pipe list Member 4 is supported in mounting base 20.Three round moulds are with overlapped way and are coaxially sleeved in drive shaft 44, the fixation of swing arm 45 End 450 is also sleeved in drive shaft 44, so as to drive axis of the circle mould with swing arm 45 around drive shaft 44 by drive shaft 44 Line rotates, i.e., three round moulds are total to drive shaft with swing arm 45.

Clamp die mechanism 5 includes clamping seat 50, clamping drive cylinder 54 and with the clamping on overlapped way installation folder die holder 50 51st, clamping 52, clamping 53, when clamping be in clamp position with circle mould, three clampings coaxial arrangement corresponding with three round moulds, is pressed from both sides The cylinder rod for holding drive cylinder 54 drives three clampings and justifies die clamp tightly to clamp pipe fitting or opening by promoting clamping seat 50 With release plumbing component.

As shown in figure 3, in the present embodiment, the structure of left Pipe Elbow Element 3 and right Pipe Elbow Element 4 are essentially identical, except circle Mould and guided mode number, i.e., only set single round mould and clamping, so that forming double-pendulum arms or so is total to curved number on the curved unit 3 in a left side Control bending machine.Of course, specifically depend on actual bend pipe requirement for the number of plies, the elbow radius of circle mould and clamping, such as both can be with For individual layer mould, or more than two layers of multilayer mode structure, the number of plies being not limited in attached drawing.

Such as Fig. 2 to Fig. 5, driven gear 440 is set with the lower end of drive shaft 44, bend pipe motor 22 is servomotor, Its rotor is connected with retarder, and driving gear is set with reducer shaft, which passes through same root chain 21 and driven tooth 34 chain drive of driven gear connection on wheel 440 and left Pipe Elbow Element 3, in the present embodiment, chain is silent chain.So as to Two drive shafts are driven to rotate by same bend pipe motor 22, left Pipe Elbow Element 4 is with right Pipe Elbow Element 3 by same bend pipe motor 22 drivings.

In the present embodiment, driven gear 34 is identical with the structure of driven gear 44, so that during bend pipe, two drives Dynamic main shaft rotates for isogonism speed, while pipe fitting is caused to do in order to avoid not carrying out the Pipe Elbow Element of bend pipe operation during bend pipe Relating to, two swing arms angle during bend pipe is kept in a certain range, such as within 30 degree, 15 degree, preferably 0 degree, i.e., two Person's keeping parallelism arrangement states.

Referring to Fig. 2 and Fig. 6, guided mode unit 6 includes cloth-guiding base 61, right curved guided mode 62, left curved guided mode 63 and two-dimentional driving machine Structure.

Two-dimentional driving mechanism include cross slide way slide block mechanism 64, horizontal oil cylinder 65, horizontal slide unit 66, axial oil cylinder 67 and Axial guidance slide block mechanism 68, horizontal slide unit 66 by cross slide way slide block mechanism 64 slideably in mounting base 20, will Whole guided mode unit 6 is installed in mounting base 20, and cross slide way slide block mechanism 64 is included along perpendicular to treating the axial of elbow member The line slideway of lateral arrangement；The cylinder body of horizontal oil cylinder 65 is fixedly connected with mounting base 20, and cylinder rod is solid with horizontal slide unit 66 Fixed connection, so as to promote horizontal slide unit 66 transversely to be moved back and forth with respect to mounting base 20.Cloth-guiding base 61 is a door type frame knot Structure, axial guidance slide block mechanism 68 includes being installed on two madial walls of door type frame structure and edge treats that elbow member is axial arranged Line slideway 681 and the sliding block 682 that is installed on the cylinder body of axial oil cylinder 67, cylinder rod and the door type frame of axial oil cylinder 67 Frame is fixedly connected, and the cylinder body of horizontal oil cylinder 67 is fixedly connected with horizontal slide unit 66, so as to promote 61 relatively transverse slide unit of cloth-guiding base 66 transversely move back and forth；Right curved guided mode 62 is accordingly installed in the both sides of cloth-guiding base 61 with left curved guided mode 63.

Referring to Fig. 7, mold changing unit 7 includes installing plate 70, vertical driving mechanism, vertical guide slide block mechanism 72, vertical cunning Plate 76, transversal driving mechanism, cross slide way slide block mechanism 74, cross slide 77, lateral position testing agency and vertical position inspection Survey mechanism.Whole mold changing unit 7 is installed in rack by installing plate 70.

Vertical slide plate 76 is slidably mounted on installing plate 70 by vertical guide slide block mechanism 72.Vertical driving machine Structure includes servomotor 711, the screw 713 being sequentially connected by synchronous belt 712 and servomotor 711, and coordinates with screw 713 Driven nut；Screw 713 vertically arranges that, that is, along perpendicular to being vertically arranged for elbow member axial direction is treated, screw 713 is rotatable Ground be installed on installing plate 70 on, driven nut is fixed on vertical slide plate 76, thus by the positive and negative rotation of servomotor 711 and Vertical slide plate 76 is driven vertically to be moved back and forth with respect to installing plate 70.

Cross slide 77 is slidably mounted on vertical slide plate 76 by cross slide way slide block mechanism 74；Laterally driven machine Structure includes servomotor 731, the screw 733 being sequentially connected by synchronous belt 732 and servomotor 731, and coordinates with screw 733 Driven nut 734；Screw 733 is arranged in the horizontal direction, i.e., along perpendicular to the lateral arrangement for treating elbow member axial direction, screw 733 It is installed in rotation on vertical slide plate 76, driven nut 734 is fixed on cross slide 77, so as to pass through servomotor 731 Positive and negative rotation and drive the relatively vertical slide plate 76 of cross slide 77 transversely to move back and forth.That is pushing away in two driving mechanisms Under dynamic, cross slide 77 can make two-dimensional space movement relative to installing plate 70 in the plane for treating elbow member axial direction.

Lateral position testing agency includes the first position travel switch being installed on by installing plate 701 on vertical slide plate 76 751 pass through travel switch with second place travel switch 752, and the travel switch trigger member 753 being installed on cross slide 77 Trigger member 753 and the touch trigger of two travel switches and the relative position between cross slide 77 and vertical slide plate 76 is carried out Monitoring；Vertical position testing agency structure and lateral position testing agency are similar, it is also by two position travel switches Relative position between vertical slide plate 76 and installing plate 70 is monitored.

Referring to Fig. 8, feeding trolley 8 includes the feeding guide 81 being fixed in rack 10, is slideably pacified by sliding block 810 Slide unit 82 on feeding guide 81, the feeding rack 83 arranged along the direction parallel to feeding guide 81, can be around itself axis Line is rotatably mounted at the feeding main shaft 84 on slide unit 82, is driven installed in 84 front end of feeding main shaft and by clamping jaw cylinder 87 Three-clove style clamping jaw 840, the rotating servo motor 85 that driving feeding main shaft 84 rotates, passes through the gear on armature spindle and feeding The feeding servomotor 86 that rack 83 coordinates and drives slide unit 82 to be moved back and forth along feeding guide 81, and rack 10 is installed in cunning The travel switch 88,89 that the stroke of platform 82 is controlled.

Referring to Fig. 1 to Fig. 8, head 2 is installed on cross slide 77 with guided mode unit 6 by mounting base 20, so as to drive Whole head 2 and transverse mode unit 6 are moved relative to treating that elbow member does two dimensional surface movement.

It is that processor performs and is stored in storage to treat elbow member to carry out bend pipe operation detailed process using this CNC tube bending machine Computer program in device is to realize following steps：

First direction bend pipe step, control bend pipe motor 22 drive swing arm in Pipe Elbow Element to turn with circle mould towards first direction It is dynamic, bend pipe operation is carried out to being clamped in work circle mould and the pipe section of filing appliance intermode, while control feeding trolley to drive feeding Main shaft is axially synchronized with the movement with guided mode unit driving guided mode along pipe fitting.

In this step, feeding trolley 8 enters waiting position, treats that elbow member is sent by operative employee or additional automatic feed mechanism Enter in clamping jaw 840, after pressing startup, clamping jaw cylinder 87 acts, and promotes clamping jaw 840 to clamp pipe fitting.Feeding servomotor 86 passes through Rack and pinion mechanism driving feeding main shaft 84 drives pipe fitting to be moved on guide rail, feeding before and after realization.

Rotating servo motor 85 drives feeding main shaft 84 to rotate by synchronous belt, realizes that pipe fitting rotates.Feeding trolley is sent The rotation of material and main shaft is driven by servomotor, and to ensure repetitive positioning accuracy, the use of rack-and-pinion is more being lifted While the bearing capacity of feeding trolley, effective control noise.

Feeding trolley 8 send pipe fitting to designated position, and clamping drive cylinder 54 acts, and promotes clamping seat 50 to drive clamping Move and close to circle mould, pipe fitting is clamped.At this time, the horizontal oil cylinder 65 in guided mode unit 6 acts, and guided mode is moved to corresponding Operating position, i.e., with the corresponding guided mode of first direction against on pipe fitting, then bend pipe motor 22 rotates, and drives swing arm to turn It is dynamic, realize bend pipe.

When needing to carry out second of bend pipe in same mould position, clamping and guided mode can unclamp, and feeding trolley 8 can promote pipe fitting New position is moved to, turns certain angle if necessary to pipe fitting, at this moment rotating servo motor 85 rotates, and drives 84 turns of feeding main shaft It is dynamic, realize the rotation of pipe fitting different angle, then clamping and guided mode clamp, and swing arm rotation, realizes same station bend pipe again.By Feeding before and after feeding trolley 8, feeding main shaft 84 rotate, swing arm rotation it is common coordinate realize three-dimensional bending tube.

During bend pipe, axial oil cylinder 67 can promote guided mode to be acted along line slideway 681, make guided mode fortune synchronous with swing arm It is dynamic, while feeding trolley can also push pipe fitting and be synchronized with the movement with swing arm, prevent pipe fitting to be pulled out of shape.

When needing the different mould positions using same swing arm so as to fulfill the switching of different bend pipe diameters, clamping and guided mode pine To open, servomotor 731 acts, and is driven by screw 33, drives whole head to laterally move, and makes round mould pipe fitting slightly away, Avoid interference with, then servomotor 711 acts, and is driven by screw 713, drives whole head 2 to move up and down to needing mould position, Then servomotor 731 moves, and makes round mould and feeding trolley center alignment, and then clamping, guided mode clamp, and swing arm motion, is realized Different mould positions bend pipe.

Step is changed the mold, keeps pipe fitting static with respect to rack 11 in the horizontal, controls circle mould to be unclamped with clamping with release plumbing component, And control mold changing unit 7 to drive head 2 round mould is transversely deviateed to avoid pipe fitting, then drive head 2 vertically to moving down Move to the top of Pipe Elbow Element and avoid pipe fitting, then drive head 2 to laterally move to pipe fitting and be located at another pair in opening shape The circle mould of state is contour with pipe fitting and drive head 2 to make round mould with above clamping, then driving head 2 to move to round mould vertically upwards Transversely move to it is coaxially arranged with pipe fitting, then driving treat the tight pipe fitting of filing appliance die clamp.

In this step, when need using another swing arm carry out reverse bend pipe when, i.e., second direction bend pipe when, clamping with Guided mode can unclamp, and servomotor 731 acts, and be driven by screw 733, drive whole head motion, round mould is managed slightly away Part, avoids interference with, and then servomotor 711 acts, and is driven by screw 713, drives whole head to be moved downward to specific bit Put, avoid pipe fitting from interfering with swing arm, then servomotor 731 acts, and makes another swing arm circle mould and 8 main shaft of feeding trolley Center snap, then mold changing arrives and specifies mould position up and down, then moves left and right round mould and clamped close to pipe fitting, clamping, guided mode.

I.e. during mold changing, by the common driving of two oil cylinders, make cloth-guiding base 61 transversely in two round intermodes Move back and forth and move back and forth vertically.

Second direction bend pipe step, control control bend pipe motor 22 drive in Pipe Elbow Element swing arm and circle mould towards second direction Rotate, bend pipe action is carried out to the pipe section being clamped between round mould and clamping, while control feeding trolley 8 to drive feeding main shaft 84 Guided mode is driven to be synchronized with the movement vertically with guided mode unit 6.Detailed process is referring to first direction bend pipe step.

After all bend pipe releases, clamping and guided mode can unclamp, and clamping jaw unclamps, after removing curved good product manually, Startup is pressed, clamping, guided mode, feeding trolley and all mould positions reset, return to initial position, press and open after feeding again Dynamic, above-mentioned action is realized in repetition.

Embodiment 2

As the explanation to the utility model embodiment 2, the difference only pair with above-described embodiment 1 is said below It is bright, i.e., only the structure of clamping component is illustrated.

Referring to Fig. 9 and Figure 10, clamping component 9 includes clamping seat 93, the folder on the mounting surface 930 of clamping seat 93 Mould (not shown), the clamping adjusting screw 920 being installed in rotation in swing arm 92, and arranged on swing arm 92 and clamping seat Clamping driving mechanism between 93.Clamping driving mechanism includes reinforcement rocking bar 941, reinforcement connecting rod 942, lever 943 and actuator 95.

Actuator 95 is oil cylinder, its cylinder rod 951 forms the mover of actuator 95, and cylinder body 952 forms determining for actuator 95 Son, and cylinder body 952 is hinged in swing arm 92 by hinge shaft 953, lever 943 is boosting lever.

The fixing end of reinforcement rocking bar 941 is hinged by hinge shaft 921 with swing arm 92, and the end of swinging end and cylinder rod 951 leads to It is hinged to cross hinge shaft 922；The fulcrum of lever 943 is hinged in swing arm 92 by hinge shaft 923, and force side passes through hinge with clamping seat 93 Axis 924 is hinged；One end of reinforcement connecting rod 942 is hinged by hinge shaft 922 with 941 swinging end of reinforcement rocking bar, i.e. cylinder rod 951, increasing The end of power connecting rod 942 and reinforcement rocking bar 941 is total to hinge shaft and is hinged, and the force side of the other end and lever 943 is cut with scissors by hinge shaft 925 Connect.

Referring to Fig. 9 to Figure 11, swing arm 92 includes being clamped in the side directing plate 927 of 93 both sides of clamping seat, draws in two sides 927 medial surface of guide plate is respectively provided with and 929 matched cunning of arc chute formed with arc chute 929 on 93 both sides of clamping seat Block 931, so as to carry out lateral Displacement guiding and the displacement in vertical plane to the moving process of 93 opposed swing arms 92 of clamping seat Carry out spacing guiding；And arc chute 929 is located at the lower section of the swinging track of 943 force side of lever on vertical position, so as to To the tie point layout designs of clamping seat 93.For clamping seat 93, for the ease of processing and installing, it may include to be used for installation folder The pedestal portion of mould and the sliding block portions being movably disposed in swing arm 92, are fixedly connected by fixing pieces such as bolts between two.

As shown in Figure 11 (a), when clamping, which is in, opens release plumbing component state, cylinder rod, the reinforcement rocking bar of oil cylinder 95 941 and reinforcement connecting rod 942 form Y-shaped structure, lever 943 and reinforcement connecting rod 942 are close to conllinear but towards deviateing sliding block 931 Direction biases a small angle, i.e. the angle of the two towards arc chute 929 is less than 180 degree.At this time, cylindrical rod type sliding block 931 against In the lower groove end face of arc chute 929.

As shown in Figure 11 (b), with the work of oil cylinder 95 and ejection cylinder bar, it promotes reinforcement rocking bar 941 and reinforcement connecting rod 942 towards the direction movement collinearly arranged, so that promote the force side of lever 943 to be moved towards the direction for deviateing arc chute 929, To promote clamping seat 93 to be moved towards close to the direction of circle mould mounting portion 925 by force side.

As shown in Figure 11 (c), with further pushing away for oil cylinder 95, until sliding block 931 arcuately sliding slot 929 slide into against Groove end face thereon, i.e. clamping are clamping pipe fitting state, and at this time, lever 943 is vertically arranged, reinforcement rocking bar 941 and reinforcement connecting rod 942 conllinear arrangements, i.e. the two power output to oil cylinder 95 carry out approach infinity multiple amplification, so as to be carried for clamping clamping pipe fitting For required chucking power.

In above-mentioned clamping process, arcuately sliding slot 929 slides sliding block 931, i.e., arc chute 929 forms 93 phase of clamping seat The arc-shaped guide rail moved to swing arm 92, in the present embodiment, the center line of arc chute 929 is with the axis of hinge shaft 924 around hinge shaft 923 Swinging track iso-curvature radius, i.e. arc-shaped guide rail and lever 943 force side swinging track iso-curvature radius, so that it is guaranteed that folder Die holder 93 remains translation feature in moving process.

Embodiment 3

As the explanation to the utility model embodiment 3, the difference only pair with above-described embodiment 2 is said below It is bright.

Referring to Figure 12, by more than one hinged guiding swing rod 964 in mounting base, to substitute in above-described embodiment 2 Arc chute, i.e., be hinged in swing arm by hinge shaft 965, and guiding 964 swinging end of swing rod is cut with scissors by hinge shaft 966 and clamping seat 96 Connect, guiding swing rod 964 is arranged with lever 963 in swing process with keeping parallelism, resistance arm of its length and lever 963 etc. It is long.The swinging end swinging track of swing rod 964 is guided to form arc-shaped guide rail of the clamping seat 96 relative to mounting base movement.

To make guiding swing rod 964 form generally planar plane of oscillation when swinging, to improve the stability of clamping driving, It can be realized by least one of following structure design：(1) by setting guiding swing rod 964 on clamping seat 96 around its end The lateral Displacement guiding groove 962 that portion's hinge shaft 966 rotates, the i.e. cell wall of lateral Displacement guiding groove 962 are with guiding 964 bar wall phase of swing rod Against and make its along cell wall slide and form generally planar plane of oscillation, (2) by clamping seat 96 be equipped with guiding lever The lateral Displacement guiding groove that 963 resistance arm is rotated around its end hinge shaft, (3) by mounting base be equipped with guiding swing rod 964 around The lateral Displacement guiding groove that its end hinge shaft 965 rotates.

The power set of the output straight-line displacement such as oil cylinder and power are substituted as actuator using linear motor, cylinder.

The central scope of the utility model be by change the mold unit driving be mounted in left Pipe Elbow Element on same head with Right Pipe Elbow Element with respect to rack in the two-dimensional movement in the plane for treating elbow member axial direction, to realize cutting for left and right bend pipe pattern Change；According to this design, the structure of mold changing unit and guided mode unit also has a variety of obvious conversion；For guided mode unit, than It can such as use the guided mode mechanism of two single movements to substitute monoblock type in above-described embodiment and change the mold unit；For changing the mold unit, its Major function is to promote head to do two dimensional motion in the plane perpendicular to pipe fitting axial direction, but is not limited to that two dimensional motion can only be done Driving mechanism.In addition, mold changing unit can also use cylinder, linear motor etc. to export straight line fortune with the power source in guided mode unit The dynamic power set with power, it is not limited to the structure in above-described embodiment；The bend pipe electricity of left Pipe Elbow Element and right Pipe Elbow Element Machine is not limited to share one in above-described embodiment, can each Pipe Elbow Element be driven using a bend pipe motor, and can Bend pipe driver is formed using rotary power output device, such as by rack and pinion mechanism by cylinder, oil cylinder linear motion Be converted into the rotary motion of gear and outputting rotary power, and be not limited to the electric machine structure in above-described embodiment.

Claims (10)

1. a kind of left and right curved CNC tube bending machine altogether, including rack, control unit and in the rack and by the control The swan neck system and feeding trolley of unit control processed, the swan neck system include head, guided mode unit and mold changing unit；

It is characterized in that：

The head includes mounting base and the left Pipe Elbow Element in the mounting base and right Pipe Elbow Element, Pipe Elbow Element bag Include round mould, swing arm, bend pipe driver and the clamping in the swing arm；

The mold changing unit is driven the relatively described rack of the head by described control unit control perpendicular to treating elbow member Axial transverse direction is moved up with perpendicular, the CNC tube bending machine is switched between left curved operating mode and right curved operating mode.

2. CNC tube bending machine according to claim 1, it is characterised in that：

Circle mould in same Pipe Elbow Element is total to drive shaft with swing arm.

3. CNC tube bending machine according to claim 2, it is characterised in that：

With drive shaft, the keeping parallelism during being driven by bend pipe driver is arranged for two swing arms.

4. CNC tube bending machine according to claim 2, it is characterised in that：

Pass through chain drive or gear drive between drive shaft and bend pipe driver.

5. CNC tube bending machine according to claim 4, it is characterised in that：

Two drive shafts are driven by bend pipe driver and isogonism speed rotates.

6. CNC tube bending machine according to claim 1, it is characterised in that：

The guided mode unit is installed in the mounting base, including cloth-guiding base, right curved guided mode, left curved guided mode and two-dimentional driving machine Structure, the two dimension driving mechanism drive the cloth-guiding base along the transverse direction in two round intermodes reciprocating movements and past along the axial direction It is multiple mobile；

The curved guided mode in the right side is accordingly installed in the both sides of the cloth-guiding base with the curved guided mode in a left side.

7. CNC tube bending machine according to claim 1, it is characterised in that：

Clamping driving mechanism is equipped between clamping and swing arm, the clamping driving mechanism includes clamping seat, reinforcement rocking bar, reinforcement and connects Bar, boosting lever and actuator, the clamping seat can arcuately guide rail be slidably mounted in swing arm；

The fixing end of the reinforcement rocking bar is hinged with swing arm, and the mover of swinging end and the actuator is hinged；The boosting lever Fulcrum be hinged in swing arm, force side is hinged with the clamping seat；One end of the reinforcement connecting rod and the reinforcement rocking bar Swinging end is hinged, and the force side of the other end and the boosting lever is hinged；The arc-shaped guide rail and the swing rail of the force side Mark iso-curvature radius.

8. CNC tube bending machine according to claim 7, it is characterised in that：

Swing arm is equipped with the side directing plate for being clamped in the clamping seat both sides, and the arc-shaped guide rail is to be guided arranged on the side Arc chute on plate, is respectively provided with and the matched sliding block of the arc chute on the both sides of the clamping seat.

9. CNC tube bending machine according to claim 7, it is characterised in that：

The guiding swing rod of more than one is hinged with swing arm, the swinging end of the guiding swing rod is hinged with the clamping seat, described The swinging track of the swinging end of swing rod is guided to form the arc-shaped guide rail, the guiding swing rod was being swung with the boosting lever Journey keeping parallelism is arranged.

10. according to the CNC tube bending machine described in any one of claim 1 to 9 claim, it is characterised in that：

The left Pipe Elbow Element is driven with the right Pipe Elbow Element by same bend pipe driver is synchronous.