CN207357842U - A kind of bending machine and its die assembly - Google Patents

Abstract

A kind of bending machine and its die assembly are the utility model is related to, belongs to tubular object extruding processing technology field.Wherein, bending machine includes rack and the head in the rack, head includes swing arm, circle mould, die assembly, drive shaft and bend pipe driver, and bend pipe driver drives circle mould to be rotated with swing arm around the axis of drive shaft to carry out bend pipe operation to pipe fitting by drive shaft；Die assembly is clamping component and/or guided mode component；Die assembly includes mold base and mould：Mould is movably mounted on mold base, with the axial axial direction to adaptation pipe fitting by clamping part of its die cavity of energy adaptively correcting during bend pipe.Since mould is is movably mounted on mold base, its can preferably coordinate with circle mould with clamp or it is auxiliary push away clamping pipe fitting, to efficiently reduce skidding of the pipe fitting during bend pipe, improve bending quality, can be widely applied in the fields such as air-conditioning, aviation.

Description

A kind of bending machine and its die assembly

Technical field

Tubular object extruding equipment is the utility model is related to, specifically, is related to a kind of bending machine and for building the bending machine Die assembly.

Background technology

Bending machine is widely used in the process industry such as air-conditioning, automobile, ship, aerospace field, generally includes rack, control Unit processed and feeding trolley, guided mode unit and the head controlled in rack by control unit；Head includes swing arm, circle Mould, justify mould and swing arm around driving in swing arm for clamping the clamping of pipe fitting together with justifying mould and being driven by drive shaft Main-shaft axis is rotated to carry out the bend pipe motor of bend pipe operation to pipe fitting, wherein, circle mould is used to control elbow radius.

Notification number is to disclose a kind of bending machine in the patent document of CN206405223U, as shown in its attached drawing 2, its head Including swing arm 11, circle mould 21 and clamping component 3.Wherein, clamping component 3 includes clamping seat 31 and is installed by dovetail keyway structure Clamping on clamping seat 31.Since clamping is installed to clamping seat 31 using dovetail keyway structure, easy to the assembling between the two Connect and be bolted to connection；But when verticality is bad between the bottom surface of clamping seat and clamping mounting surface or multilayer is pressed from both sides When the mounting surface of mould and the bad clamping face depth of parallelism, just it is difficult to ensure that the parallel cloth in end face is held in clamping clamping end face with justifying die clamp Put, that is, be difficult to ensure that clamping cavity axis and circle die cavity axis as parallel arrangement, so that clamping chamber is in bell mouth shape with round die cavity Structure, causes not clamping during bend pipe and has skidded problem, it is difficult to ensure bending quality.

A kind of bending machine component is disclosed in the patent document of Publication No. CN105598296A, as shown in its attached drawing 1, bag Round mould 1, clamping component and guided mode component are included, clamping component includes clamping 2, and guided mode component includes guided mode 3；There it can be seen that Clamping 2 and guided mode 3 are to be installed by dovetail keyway structure to mounting base, it does not only exist above-mentioned clamping chamber with justifying die cavity and is in Horn-like structure and the problem of not clamping pipe fitting, also there are guided mode 3 guided mode chamber axial direction and the axial direction for the treatment of elbow member it is not parallel And it is difficult to auxiliary the problem of pushing away.

In addition, using chain bridge piece motor and drive shaft in existing bending machine, can cause with the use of chain , easily there is the problem of bend pipe precision stability is relatively low in its serious wear.

Utility model content

The purpose of this utility model is to provide a kind of bending machine for the clamping quality to pipe fitting that can effectively improve its mould, To improve bending quality；

The another object of the utility model is to provide the bending machine for further improving bending quality；

A further object of the utility model is to provide a kind of die assembly for being used to build above-mentioned bending machine.

To achieve these goals, bending machine provided by the utility model includes rack and the machine in the rack Head, head include swing arm, circle mould, die assembly, drive shaft and bend pipe driver, bend pipe driver and are driven by drive shaft Circle mould is rotated to carry out bend pipe operation to pipe fitting with swing arm around the axis of drive shaft；Die assembly is clamping component and/or leads Membrane module；Die assembly includes mold base and mould：Mould is movably mounted on mold base, with can be adaptive during bend pipe The axial axial direction to adaptation pipe fitting by clamping part of its die cavity should be corrected；When die assembly is clamping component, by the way that clamping is lived Be installed on dynamicly clamping seat with when clamping coordinates clamping pipe fitting with circle mould can adaptively correcting its clamping chamber axially to being adapted to Axial direction of the pipe fitting by clamping part；And when die assembly is guided mode component, by the way that guided mode is movably mounted on cloth-guiding base, with Guided mode is auxiliary push away clamping pipe fitting when can adaptively correcting its guided mode chamber it is axial to adaptation pipe fitting by the auxiliary axial direction for pushing away retained part.

Due to clamping to be movably mounted on clamping seat, and it can adaptively correcting when coordinating clamping pipe fitting with circle mould Its clamping chamber is axially adapted to the axial direction of pipe fitting holding portion, so as to preferably clamp pipe fitting with circle mould, effectively to subtract Skidding of the education and correction for juvenile offenders part during bend pipe, effectively improves bending quality；And/or guided mode is to be movably mounted on die holder, And its it is auxiliary push away clamping pipe fitting when can adaptively correcting its guided mode chamber axially adaptation to pipe fitting by the auxiliary axial direction for pushing away retained part, have Effect ground improves guided mode and pushes away clamping quality to the auxiliary of pipe fitting, effectively improves bending quality.

Specific scheme is installed on mold base for mould by axis pin, and the axis of axis pin is equal with the axis of drive shaft OK, the axis hole at least one of mould and mold base and axis pin clearance fit are to realize that mould is movably mounted to mold base On.Being flexibly connected for mould and mold base is realized by axis pin, its is simple in structure and easy to assembling.

One more specifically scheme includes mould backer for mold base and is removably secured the company being connected with mould backer Joint chair, mould are fixedly connected by axis pin with connecting seat.By connecting seat connecting mold and mould backer, can be easy to lean on mould Mountain and the processing of connecting seat, and can be easy to reequip existing bending machine.

More specifically scheme is installed on mold base for the mould of more than two pieces arranged stackeds by same root axis pin for another.

In order to realize above-mentioned another object, preferred solution provided by the utility model is that the bend pipe driver in bending machine is Bend pipe motor, bend pipe motor are sequentially connected by gear drive and drive shaft, and it is helical teeth that gear drive, which includes, The master gear of wheel, transition gear with from gear；Transition gear and it is used to adjust the primary of sideshake between the two from being equipped between gear and adjusts Gap mechanism, is equipped with the secondary gap adjusting mechanism for being used for adjusting sideshake between the two between master gear and transition gear；Primary gap adjusting mechanism bag Include the eccentric shaft being installed in rotation in head mounting base, the adjustment mechanism of corner for adjusting eccentric shaft and for inclined Mandrel angle position is rotatably sleeved on eccentric shaft into line-locked locking mechanism, transition gear；Locking mechanism include with What mounting base was fixedly connected determines porose disc, the dynamic porose disc being fixedly connected with rotating synchronously with an axial end of eccentric shaft, and has selection Ground passes through the locking axis pin for being arranged on a pair of locking hole on two porose discs.

By the way that transition gear is sleeved on eccentric shaft, realized with the corner by adjusting eccentric shaft to transition gear with From the adjustment of sideshake between gear, the collimation after effectively ensuring that transition gear shaft before adjustment, that is, ensure that adjust gap before and after The stability of transmission；And by two gear centres away from minor adjustment zoom into adjustment to angle of eccentricity, effectively improve The precision that sideshake adjusts between gear；Then, adjustment to sideshake between master gear and transition gear is completed by secondary gap adjusting mechanism, So as to be effectively improved the bending quality with the bending machine.

Preferred scheme is that secondary gap adjusting mechanism includes being used for the seat that is slidably installed for installing bend pipe motor and master gear, and It is installed in the mounting base of head to be used to promote and is slidably installed seat so that master gear adjusts gap towards the movement close to the direction of transition gear Push-pull mechanism, effectively to simplify the structure of secondary gap adjusting mechanism；Locking mechanism further includes check pin and locking for holding out against The lock-screw of pin, the inner of check pin are equipped with the matched locking compressive plane of side wall with another axial end of eccentric shaft, lead to The locking compressive plane for crossing check pin extrudes with eccentric shaft side and forms frictional force, so as to aid in porose disc knot on another axial end Locking of the structure to eccentric shaft, to further improve locking stability of the eccentric shaft during bend pipe.

In order to realize above-mentioned a further object, die assembly provided by the utility model is guided mode component and/or clamping component, The die assembly includes mold base and mould, and mould is movably mounted on mold base, with can adaptive school during bend pipe The just axial axial direction to adaptation pipe fitting by clamping part of its die cavity；When die assembly is clamping component, by by clamping actively Installed in clamping seat with when clamping coordinates clamping pipe fitting with circle mould can adaptively correcting its clamping chamber it is axial to being adapted to pipe fitting By the axial direction of clamping part；And when die assembly is guided mode component, by the way that guided mode is movably mounted on cloth-guiding base, to lead The auxiliary axial extremely adaptation pipe fitting for pushing away its guided mode chamber of energy adaptively correcting when clamping pipe fitting of mould is by the auxiliary axial direction for pushing away retained part.

With the bending machine of above-mentioned die assembly structure during bend pipe, clamping effect of the mould to pipe fitting can be effectively improved Fruit, to improve bending quality.

Specific scheme is installed on mold base for mould by axis pin, and the axis of axis pin and the axis of mould cavity are mutually just Hand over, the axis hole at least one of mould and mold base and axis pin clearance fit.

One more specifically scheme includes mould backer for mold base and is removably secured the company being connected with mould backer Joint chair, mould are fixedly connected by axis pin with connecting seat.

More specifically scheme is installed on mold base for the mould of more than two pieces arranged stackeds by same root axis pin for another.

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 side view that the utility model embodiment 1 is seen in slave head end side；

Fig. 4 is the stereogram of clamping component in the utility model embodiment 1, guided mode component and circle membrane module；

Fig. 5 is the top view of clamping component in the utility model embodiment 1, guided mode component and circle membrane module；

Fig. 6 is the assembling figure of clamping component in the utility model embodiment 1；

Fig. 7 is the assembling figure of guided mode component in the utility model embodiment 1；

Fig. 8 is the structural representation of head mounting base, gear drive and bend pipe motor in the utility model embodiment 2 Figure；

Fig. 9 is the B partial enlarged views in Fig. 8；

Figure 10 is the structure decomposition figure of retaining mechanism and eccentric shaft in the utility model embodiment 2；

Figure 11 is the schematic view of the mounting position of lock-screw and check pin in the utility model embodiment 2；

Figure 12 is the structure diagram that porose disc is moved in the utility model embodiment 2；

Figure 13 is to move porose disc in the utility model embodiment 2 and determine the position relationship schematic diagram of lock hole pair on porose disc.

Embodiment

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

Embodiment 1

Referring to Fig. 1 to Fig. 7, the utility model bending machine 1 is CNC tube bending machine, including rack 11, control unit and installation In rack 11 and by the head 12 and feeding trolley 2 of control unit control.Head 12 includes mounting base 30, swing arm 31, circle mould Component 4, clamping component 5, guided mode unit 6, wrinkle resistant unit 7 and by same root drive shaft drive swing arm 31 with justify membrane module 4 it is same Walk the bend pipe motor 32 rotated around the rotation axis 01 of drive shaft.

As shown in Figure 1, feeding trolley 2 includes two line slideways 21 being arranged parallel to being fixed in rack 11, The feeding slipway 22 being slidably mounted on line slideway 21, it is along the length direction arrangement parallel to line slideway 21 fixed Feeding rack 23 in rack 11, the feeding main shaft 24 that can be installed on around own axis on feeding slipway 22, installation In 24 front end of feeding main shaft and the three-clove style clamping jaw 240 that is driven by clamping jaw cylinder 27, pass through synchronous belt and drive 24 turns of feeding main shaft Dynamic rotating servo motor 25, and coordinated by the gear on armature spindle and feeding rack 23 to drive 22 edge of feeding slipway The feeding servomotor 26 that line slideway 21 moves back and forth.

As shown in Figures 2 to 6, circle membrane module includes being installed on the circle mould 41 in root drive shaft, circle with overlapped way Mould 42, circle mould 43 and circle mould 44, clamping component 5 include clamping backer 50, connecting seat 55 and with four matched clampings of round mould 51st, clamping 52, clamping 53 and clamping 54, the clamping with layer arrangement are pressed from both sides with circle mould cooperation with the clamped portion for treating elbow member Hold, the elbow radius of different layers circle mould is different.Clamping backer 50 is connected for 31 with swing arm by clamping driving mechanism, for driving Clamping close to circle mould and pipe fitting is clamped or away from circle mould and release plumbing component, wherein clamping driving mechanism include driving cylinder 310, and clamping component 4 is synchronously driven by drive shaft with swing arm 31 during bend pipe and is rotated around rotation axis 01.

Four mounting grooves 551,552,553,554 for being used to install clamping are equipped with connecting seat 55 and for for the first pin The axis hole that axis passes through from top to bottom, is illustrated in figure 6 the axis hole 555 for being formed at and being passed through on connecting seat 55 for the first axis pin 56. The axis hole passed through for axis pin is accordingly equipped with the installation end of clamping 51-54, is illustrated in figure 6 and is formed in four clampings for the The axis hole 510,520,530 and 540 that one axis pin 56 sequentially passes through from top to bottom.In installation process, clamping 51-54 passes through phase Two same first axis pins 56,57 are installed on connecting seat 55, and the axis of the first axis pin and 01 parallel arrangement of rotation axis, Axis hole and the first axis pin 56,57 in clamping 51-54 and connecting seat 55 are clearance fit, so that clamping is around the first axis pin energy Small-angle Rotation, so as to be movably mounted on connecting seat 55, with can adaptive school when clamping coordinates clamping pipe fitting with circle mould The just axial axial direction that portion is clamped to adaptation pipe fitting of its clamping chamber, i.e., can equally be such that clamping adaptively corrects to its clamping Cavity axis arrangement parallel with the circle die cavity axis of circle mould.Wherein, circle die cavity, the axis of clamping chamber refer to it is axial arranged along its and Through the straight line in its cross section center of circle.Clamping backer 50 is connected with connecting seat 55 by dovetail keyway structure 500, the two structure together Clamping seat in cost implementation.

As shown in Fig. 2 to Fig. 5 and Fig. 7, guided mode unit 6 includes guided mode component and driving guided mode component does two in the horizontal plane Mobile driving mechanism is tieed up, guided mode component is including guided mode backer 60, connecting seat 65 and four with justifying leading for the corresponding arranged stacked of mould Mould, is respectively guided mode 61, guided mode 62, guided mode 63 and guided mode 64.

Four mounting grooves 651,652,653,654 for being used to install guided mode are equipped with connecting seat 65 and for for the second pin The axis hole that axis passes through from top to bottom, is illustrated in figure 7 the axis hole 655 for being formed at and being passed through on connecting seat 65 for the second axis pin 66. The axis hole passed through for axis pin is accordingly equipped with the installation end of guided mode 61-64, is illustrated in figure 7 and is formed on four guided modes for the The axis hole 610,620,630 and 640 that two axis pins 66 sequentially pass through from top to bottom.In installation process, guided mode 61-64 passes through phase Two same second axis pins 66,67 are installed on connecting seat 65, and the axis of the second axis pin and 01 parallel arrangement of rotation axis, Axis hole and the second axis pin 66,67 in guided mode 61-64 and connecting seat 65 are clearance fit, so that guided mode is around the second axis pin energy Small-angle Rotation, so as to be movably mounted on connecting seat 65, with guided mode is auxiliary push away clamping pipe fitting when can adaptively correcting its lead The axial axial direction that portion is clamped to adaptation pipe fitting of die cavity.Guided mode backer 60 is connected with connecting seat 65 by dovetail keyway structure 600 Connect, the two forms the cloth-guiding base in the present embodiment together.

As shown in figures 2 and 5, driving mechanism includes the mounting bracket being installed on whole driving mechanism in head mounting base 30 680, the slide 691 being slidably mounted in by the guide rail slide block mechanism 682 arranged along X axis on mounting bracket 680, and promote The actuator 681 that slide 691 is moved back and forth along X axis；In the present embodiment, actuator 681 is cylinder.Guided mode backer 60 passes through The straight-line guide rail slide block mechanism 694 arranged along Y-axis is slidably mounted on slide 691, and drives guided mode by actuator Backer 60 slides along Y-axis, which includes the rack 693 being installed on along Y-axis arrangement on guided mode backer 60 and by watching Take motor 692 drive and with 693 matched gear of rack, so as to promote be installed on guided mode backer 60 on four guided modes exist Two dimensional motion is done in X-Y plane, to realize that treating the auxiliary of elbow member pushes away, wherein Z axis is arranged to along rotation axis 01.

As shown in Fig. 2, wrinkle resistant unit 7 includes anti-wrinkling mould backer 71 and is installed on anti-wrinkling mould backer by dovetail keyway structure The anti-wrinkling mould 70 of four arrangements corresponding with circle mould on 71.For circle mould, clamping, guided mode and anti-wrinkling mould with the cloth of overlapped way Put, you can be two neighboring intermodule at a distance of a determining deviation arrangement, the arrangement for the touch that can also connect.

Control unit includes processor, memory and touch-screen 33, and processor receives operating personnel's by touch-screen 33 Input instruction, and be stored in memory corresponding computer program by performing and control head 12 to be acted with feeding trolley 2 And bend pipe operation is performed to pipe fitting.

In the present embodiment, it is sequentially connected between bend pipe motor 32 and drive shaft using chain sprocket mechanism.

Embodiment 2

As the explanation to the utility model embodiment 1, only pair said below with the difference in above-described embodiment 1 It is bright, i.e., the present embodiment be on the basis of above-described embodiment 1, to the drive connection mode between bend pipe motor and drive shaft into Row improves, i.e., using the chain sprocket mechanism between both gear drive replacements, to improve the steady of product bend pipe processing quality It is qualitative.

Referring to Fig. 8 to Figure 10, mounting base 30 is the cavity body structure with installation chamber 300, and gear drive is three-level Gear drive, including master gear 841, transition gear 857 and from gear 875, primary gap adjusting mechanism and secondary gap adjusting mechanism； Primary gap adjusting mechanism includes eccentric shaft 86 and locking mechanism；Master gear 841, transition gear 857 and it is selected from helical teeth from gear 875 Cylinder wheel.

Bend pipe motor 32 is fixed on installing plate 83 by four fixing bolts, and master gear 841 is sleeved on by flat key On the output shaft for the reduction box being sequentially connected with bend pipe motor 32, installing plate 83 is equipped with eight waist round hole and two keyways, and Parallel to the flute length direction of keyway, the openend of keyway is arranged on the side end face of installing plate 83 major axis of waist round hole；Mounting base 30 Base surface with the corresponding position of keyway at be equipped with two keyways being matched therewith, installing plate 83 by through several It is removably mounted on through the fixing bolt of waist round hole in mounting base 30, and passes through the two upper corresponding key of flat key connection Groove, at this time, master gear 841 are stretched into by the through hole 3010 in mounting base 30 and in installation chambers 300, i.e. installing plate 83 form the mounting base of master gear 841 and bend pipe motor 32.

Eccentric shaft 86 includes standard shaft portion 862 and installation axle portion 861 and installation axle portion 863 on 862 both ends of standard shaft portion, Wherein, the axis collinear of axle portion 861,863 and parallel with the axis in standard shaft portion 862 but not conllinear is installed；The end of axle portion 861 is installed Face is equipped with Hexagon hole 8610, and axle portion is installed around upper and lower two in order to turn whole eccentric shaft 86 by allen wrench Axis rotates, i.e., Hexagon hole, which is formed, is used for the interior hexagonal adjusting hole for adjusting the angle position of eccentric shaft 86 in the present embodiment, from And form the adjustment mechanism for the corner for being used to adjust eccentric shaft 86；Transition gear 857 passes through two bearings on axial end 856th, 858 and be rotatably mounted around in standard shaft portion 862, i.e. transition gear 857 can do rotation around the axis in standard shaft portion 862, again It can revolve round the sun around the axis of installation axle portion.

Locking mechanism includes being fixed on determines porose disc 853, the dynamic porose disc being fixed in installation axle portion 863 in mounting base 30 852 and be resisted against installation axle portion 861 on check pin 961, determine porose disc 853 be rotatably mounted around install axle portion 863 on circle Boss type ring body structurc, its path end face are resisted against on the shaft shoulder 8630 of installation axle portion 863；Eccentric shaft 86 passes through and is arranged on mounting base Stretched into after through hole on 30 bottom plates in installation chamber 300, so that transition gear 857 is in installation chamber 300；Axle portion is installed 861 stretch into the axis hole 3140 on the top plate of mounting base 30 and rotatably coordinate therewith；Determine porose disc 853 and pass through screw 855 It is removably attached on the bottom plate of mounting base 30.

Dynamic porose disc 852 can be sleeved in installation axle portion 863 in which rotate synchronously with eccentric shaft 86, in the present embodiment, moved Porose disc 852 is with being set with arranged on the oblate axle portion 8631 installed in axle portion 863 and can be same by the flat round hole 8520 that is provided thereon Step rotates, and is fixedly connected with dynamic porose disc 852 with determining porose disc 853 by stop pin 8502, and by nut 851 by dynamic porose disc 852 are pressed on Moving plate 853, are locked with the position after being adjusted by Hexagon hole 8610 to the angle position of eccentric shaft 86 Fixed, it is the locking on 86 times axial ends of eccentric shaft.

As shown in Figures 10 and 11, the axis hole 3170 for being used for placing check pin 961 is equipped with the sidewall paneling of mounting base 30, The screw 962 that is locked of check pin 961 is held out against in axis hole 3170, so that its locking extruding of compressive plane 9610 installation axle portion 861 Side wall, forms frictional fit face, secondary locking is carried out on axial end on it with the angle position to eccentric shaft 86.

As shown in figure 8, to rotate synchronously it is sleeved on from gear 875 by two flat keys in drive shaft 94, driving master 94 both ends of axis are rotatably installed in mounting base 30 by bearing 873 and bearing 877, and make to be located at installation cavity from gear 875 In room 300.

After in the course of work for completing installation, transition gear 857 is engaged with from 875 master gear 841 of gear at the same time, will The swing offset that master gear 841 is received from bend pipe motor 32 is passed to from gear 875 with power, and is driven by drive shaft 94 Swing arm, circle mould and the clamping in swing arm rotate synchronously and carry out bend pipe operation to pipe fitting.

Referring to Figure 10, Figure 12 to Figure 13, six groups of lock holes 800 are equipped with dynamic porose disc 852, are sequentially the first hole clockwise 801 to the 6th hole groups 806 of group, the first hole group 801 has the lock hole 800 that three interval central angles are 15 degree, i.e., same In the group of hole, the interval central angle between two neighboring lock hole is equal, and the interval central angle between the 6th hole group 806 is 20 degree； Second hole group 802 has the lock hole 800 that four interval central angles are 15 degree, and the interval central angle between the first hole group 801 For 18 degree；3rd hole group 803 has the lock hole 800 that four interval central angles are 15 degree, and the interval between the second hole group 802 Central angle is 20 degree；4th hole group 804 has the lock hole 800 that three interval central angles are 15 degree, and between the 3rd hole group 803 Interval central angle be 22 degree；It is 15 degree of lock hole 800 that 5th hole group 805, which has four interval central angles, and with the 4th hole Interval central angle between group 804 is 20 degree；There are 6th hole group 806 four to be spaced central angles as 15 degree of lock hole 800, and with Interval central angle between 5th hole group 805 is 20 degree；The center of circle of these lock holes 800 is positioned at the circle with the dynamic 852 concyclic heart of porose disc On.

Depending on porose disc 853 be equipped with along its circumferential six lock hole 830 equably arranging, lock hole 830 is and locking It is round with determining the 853 concyclic heart of porose disc where the center of circle of 8502 matched axis hole of pin, i.e. six lock holes 830 and two neighboring Interval central angle between lock hole is 60 degree.

If the interval central angle 810 of the lock hole 830 of neighbouring first hole group 801 is 2.5 degree, sequentially sort clockwise, Interval central angle 820 between second 830 and second hole group 802 of lock hole is 15 degree, the 3rd 830 and the 3rd hole group of lock hole Interval central angle 840 between 803 is 10 degree, and the interval central angle 850 between the 4th 830 and the 4th hole group 804 of lock hole is 5 Degree, the interval central angle 860 between the 5th 830 and the 5th hole group 805 of lock hole are 12.5 degree, the 6th lock hole 830 and the Interval central angle 870 between six hole groups 806 is 7.5 degree, there it can be seen that turning turning for eccentric shaft 86 by allen wrench Angle often turns over 2.5 degree, there is a pair of locking hole 80 and is aligned with lock hole 830, so as to incite somebody to action the two by locking spiral pin 8502 Between relative position locked, i.e., the relative position between eccentric shaft 86 and mounting base 30 is locked.

In the present embodiment, the centre-to-centre spacing of eccentric shaft 86 changes between -1.0 to 1.0, since every grade of adjustment angle is 2.5 °, it is 2.5 × 2/360=0.0138 that can calculate every grade of average Adjustment precision, in the range of the Adjustment precision usually required that, It can also be seen that, the minor rotation in centre-to-centre spacing is converted at the same time on the angle value that more preferably measures, to reduce and adjust processing The size of error.Adjustment transition gear 857 is reached and from the centre-to-centre spacing between gear 875 by the corner of eccentric rotation axis 86, i.e., Sideshake between both adjustment, so as to complete to adjust gap to the primary of gear drive between bend pipe motor 32 and drive shaft 94.

As shown in figure 8, secondary gap adjusting mechanism include installing plate 83, the fixed block 845 being fixed on 30 bottom plate of mounting base and Along waist round hole long axis direction arrangement ground adjusting screw 846, fixed block 845 be equipped with 846 matched screw hole of adjusting screw, After completion of installation, the screw rod end face of adjusting screw 846 is by against on the side end face of installing plate 83, with by turning screw 846 And promote safety loading board 83 to be moved along the direction that key is limited with keyway, i.e., moved along the long axis direction of waist round hole.

After primary tune gap work is completed, then by adjusting the corner of adjusting screw 846, installing plate 83 is promoted towards main tooth Wheel 841 is moved to the close direction of transition gear 857, to achieve the purpose that adjustment sideshake between the two.

The central scope of the utility model is by the way that clamping is movably mounted to clamping seat, so that it coordinates with circle mould The axial extremely adaptation pipe fitting of its clamping chamber of energy adaptively correcting is clamped the axial direction in portion when clamping pipe fitting, so as to improve to pipe fitting Clamp quality；According to this design, there be a variety of obvious changes in the bindiny mechanism between clamping and clamping seat, it is not limited to Axis pin bindiny mechanism in above-described embodiment.In addition, bend pipe motor forms the bend pipe driver in the utility model, but bend pipe drives The structure of dynamic device is not limited to the electric machine structure in above-described embodiment, can also use other rotary power output devices to form this Bend pipe driver in utility model, for example cylinder, oil cylinder linear motion are converted into by gear by rack and pinion mechanism Rotary motion and outputting rotary power.

Claims (10)

1. a kind of bending machine, including rack and the head in the rack, the head includes swing arm, circle mould, mould Component and the round mould and the swing arm is driven to be rotated around the axis of the drive shaft to be carried out to pipe fitting by drive shaft The bend pipe driver of bend pipe operation, the die assembly is clamping component and/or guided mode component；

It is characterized in that, the die assembly includes：

Mold base；

Mould, is movably mounted on the mold base, is extremely adapted to so that its die cavity of energy adaptively correcting is axial during bend pipe Axial direction of the pipe fitting by clamping part.

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

The mould is installed on the mold base by axis pin, and the axis of the axis pin is equal with the axis of the drive shaft OK, the axis hole at least one of the mould and the mold base and the axis pin clearance fit.

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

The mold base includes mould backer and is removably secured the connecting seat being connected with the mould backer, and the mould leads to The axis pin is crossed to be fixedly connected with the connecting seat.

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

The mould of more than two pieces arranged stackeds is installed on the mold base by axis pin described in same root.

5. according to the bending machine described in any one of Claims 1-4 claim, it is characterised in that：

The bend pipe driver is bend pipe motor, and the bend pipe motor is connected by gear drive and drive shaft transmission Connect, the gear drive include be helical gear master gear, transition gear with from gear；

The transition gear and described from being equipped with the primary gap adjusting mechanism that is used for adjusting sideshake between the two, the master gear between gear The secondary gap adjusting mechanism for being used for adjusting sideshake between the two is equipped between the transition gear；The primary gap adjusting mechanism includes turning Dynamicly the eccentric shaft in the mounting base of the head, corner for adjusting the eccentric shaft adjustment mechanism and be used for The eccentric shaft is rotatably sleeved on into line-locked locking mechanism, the transition gear to the angle position of the eccentric shaft On；

The locking mechanism includes determining porose disc with what the mounting base was fixedly connected, synchronous with an axial end of the eccentric shaft to turn The dynamic porose disc being fixedly connected dynamicly, and selectively pass through the locking axis pin in a pair of locking hole on two porose discs.

6. bending machine according to claim 5, it is characterised in that：

The secondary gap adjusting mechanism includes being used for the seat that is slidably installed for installing the bend pipe motor and the master gear, and is installed in Be used to promoting in the mounting base of the head it is described be slidably installed seat so that the master gear towards close to the side of the transition gear To the mobile push-pull mechanism for adjusting gap；

The locking mechanism further includes check pin and the lock-screw for holding out against the check pin, the inner of the check pin are set Have and the matched locking compressive plane of the side wall of another axial end of the eccentric shaft.

7. a kind of die assembly of bending machine, the die assembly is guided mode component and/or clamping component, it is characterised in that institute Stating die assembly includes：

Mold base；

Mould, is movably mounted on the mold base, is extremely adapted to so that its die cavity of energy adaptively correcting is axial during bend pipe Axial direction of the pipe fitting by clamping part.

8. die assembly according to claim 7, it is characterised in that：

The mould is installed on the mold base by axis pin, the axis normal of the axis of the axis pin and the die cavity, Axis hole and the axis pin clearance fit at least one of the mould and the mold base.

9. die assembly according to claim 8, it is characterised in that：

The mold base includes mould backer and is removably secured the connecting seat being connected with the mould backer, and the mould leads to The axis pin is crossed to be fixedly connected with the connecting seat.

10. die assembly according to claim 8, it is characterised in that：

The mould of more than two pieces arranged stackeds is installed on the mold base by axis pin described in same root.