CN207357854U - A kind of bending machine - Google Patents

Abstract

A kind of bending machine is the utility model is related to, belongs to tubular object extruding processing technology field.Wherein, bending machine includes control unit, rack and rack-mounted guided mode unit, clamping die unit, the auxiliary folder unit of plug and bend pipe motor；Rotated synchronously with clamping die unit around rotation axis to the auxiliary folder unit main shaft drives driven of plug, it includes auxiliary sandwich rod and driver；Auxiliary sandwich rod is used to stretch into and be extended in by clamping member from the front port of pipe fitting, coordinates with clamping die unit radially to be clamped by clamping member in pipe fitting；Driver is used to drive auxiliary sandwich rod to stretch into or detach pipe fitting.By adding the auxiliary folder unit of plug on existing bending machine, to improve the clamping dynamics to pipe fitting by clamping member, gradient of the pipe fitting front port during bend pipe is efficiently reduced, so as to reduce the manufacturing procedure and processing cost of four-way valve D connection, can be widely used in the manufacturing technology fields such as air-conditioning.

Description

A kind of bending machine

Technical field

A kind of tubular object extruding equipment is the utility model is related to, specifically, is related to a kind of bending machine.

Background technology

Publication No. is to disclose a kind of processing method of four-way reversing valve D connection in the patent document of CN103350125A, The processing method carries out straight-run of pipe using bending machine the bend pipe step of bend pipe behaviour and the pipe end after bend pipe is carried out The forming step of processing and forming, to obtain structure four-way valve D connection 01 as shown in Figure 1.

In bend pipe step, straight tube is bent into by bend pipe operation by semi-finished product 02 as shown in Figure 2, the ruler of semi-finished product 02 Very little is usually 26 millimeters of the radius of 120 millimeters of length, 9.2 millimeters of caliber, 0.8-1.0 millimeters of wall thickness and bent portion 010, it is curved The length by clamping member 021 on pipe machine is L1, since tension and inner side are by stress on the outside of pipe fitting during bend pipe, for material For the pipe fitting of stainless steel, when L1 is 7.25 millimeters, pipe end gradient L2 after bending can be caused to reach on 1.0 millimeters, it is difficult to reach To four-way reversing valve requirement, it is necessary to add cutting step in forming step, be in tilted layout part pipe end with excision.No Treatment process is increase only, and causes cutter that very big, a usual import is lost positioned at discontinuously cutting since cutter cutting is stainless Blade life only has thousand can process, and causes its processing cost to be difficult to reduce.

Utility model content

The purpose of this utility model is to provide a kind of bending machine, in case there is excessive gradient in pipe port during bend pipe, from And the pipe end cutting action in remaining processing sequences can be omitted, it is effectively reduced the bend pipe processing cost of pipe fitting.

To achieve these goals, bending machine provided by the utility model includes control unit, rack and installed in rack Head that is upper and being controlled by control unit, head include guided mode unit, clamping die unit, the auxiliary folder unit of plug and bend pipe electricity Machine, clamping die unit be used to clamping pipe fitting by clamping member, bend pipe motor by drive shaft drive clamping die unit around The rotation axis of drive shaft is rotated to carry out bend pipe operation to pipe fitting；Plug it is auxiliary folder unit main shaft drives driven with clamping Die unit is rotated synchronously around rotation axis, it includes auxiliary sandwich rod, and auxiliary sandwich rod is used to stretch into and stretch from the front port of pipe fitting To in by clamping member, coordinate with clamping die unit radially to be clamped by clamping member in pipe fitting.

Before clamping die assembly is clamped pipe fitting by clamping member, stretched from the front port of pipe fitting to it by clamping member Enter an auxiliary sandwich rod, based on support of the auxiliary sandwich rod to pipe fitting inner wall and clamping die unit on pipe fitting outer wall radially towards In chucking power, clamped with realizing to pipe fitting clamping radially it is tighter, so as to during bend pipe, effectively reduce pipe fitting The intensity of variation of tip inside and outside shift reverse, while during bend pipe pipe fitting lateral wall is applied by guided mode auxiliary Thrust, to reduce pipe fitting lateral wall institute tension stress, that is, reduces inclined degree of the pipe fitting end after bend pipe processing to completely Sufficient project installation requirement, can omit the pipe end cutting action in subsequent treatment, effectively reduces four-way reversing valve D connection etc. zero The processing cost of component.

One specific scheme further includes the drive for driving auxiliary sandwich rod to stretch into or detach pipe fitting for the auxiliary folder unit of plug Dynamic device.Effectively improve the degree of automation of the bending machine.

Another specific scheme includes circle mould and clamping for clamping die unit, circle mould be installed in drive shaft and with Clamping coordinates and clamps pipe fitting；Clamping is installed on by clamp drive mechanism in the swing arm of head, swing arm main shaft drives driven Ground is rotated synchronously with circle mould；The auxiliary folder unit of plug is installed in swing arm., can be very by the way that the auxiliary folder unit of plug is installed in swing arm It is set to keep the synchronous rotation with clamping die unit well, to simplify handpiece structure.

To be installed with lifting unit in swing arm, which is used to drive the auxiliary folder unit of plug opposite more specifically scheme Circle mould back and forth lifts on vertical.By controlling moving up and down for the auxiliary clamp mechanism of plug, on the one hand, to pipe when can reduce discharging The interference of part；On the other hand, it can be adapted for the die of clamping dies unit being made of more than two layers of circle mould with clamping.

Another specific scheme is equipped with lifting unit for head, which is used to drive auxiliary sandwich rod is opposite to press from both sides Die unit is held back and forth to lift on vertical.By controlling moving up and down for auxiliary sandwich rod, on the one hand, when can reduce discharging pair The interference of pipe fitting；On the other hand, it can be adapted for the die of clamping dies unit being made of more than two layers of circle mould with clamping.

Preferable scheme includes to level detection sensor for lifting unit, is used to detect auxiliary sandwich rod to level detection sensor Whether it is raised to the feeding main shaft of feeding trolley concentrically at the position of axis, and detection is believed in place to control unit output Number.Effectively improve the accuracy rate that auxiliary sandwich rod is moved into place.

Another preferable scheme includes guided mode backer and guided mode for the guided mode unit of head, and guided mode passes through vertically arranged Dovetail keyway mechanism be installed on guided mode backer on, guided mode backer is respectively installed with cantilevered branch up and down guided mode at two side positions Support seat；Screw rod end is installed against the adjusting screw of guided mode on cantilevered support base, the adjusting screw positioned at guided mode both sides is used for Synergic adjustment is carried out to position of the guided mode on vertical.Easy to the adjustment to guided mode position on vertical.

Preferred scheme is equipped with auxiliary curved core rod unit for rack, and auxiliary curved core rod unit includes stretching into from pipe fitting rear port The auxiliary curved plug at bent portion is treated in pipe fitting；By the front end that clamping member is pipe fitting.Efficiently reducing bent portion, section occur ellipse The problem of sphering or wall wrinkle, further improves the bending quality of pipe fitting.

Brief description of the drawings

Fig. 1 is a kind of existing structure diagram of four-way reversing valve D connection；

Fig. 2 is a kind of existing structure diagram of four-way reversing valve D connection semi-finished product；

Fig. 3 is the stereogram of the utility model bending machine embodiment；

Fig. 4 is the A partial enlarged views of Fig. 3；

Fig. 5 is the B partial enlarged views of Fig. 3；

Fig. 6 is structure decomposition figure of the head after guided mode unit is omitted in the utility model bending machine embodiment；

Fig. 7 is the stereogram of guided mode unit in the utility model bending machine embodiment；

Fig. 8 is the flow chart for carrying out bend pipe processing to pipe fitting using the utility model embodiment；

Fig. 9 is the original state schematic diagram for carrying out bend pipe operation to pipe fitting using the utility model bending machine embodiment；

Figure 10 is the done state schematic diagram for carrying out bend pipe operation to house keeper using the utility model bending machine embodiment.

Embodiment

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

Bending machine embodiment

Referring to Fig. 3 to Fig. 7, the utility model bending machine is double bend formula CNC tube bending machine, including rack 11, control unit And in rack 11 and by the left feeding trolley 12 of control unit control, left head 13, right feeding trolley 14, right head 15th, the curved core rod unit 17 of inside left and the curved core rod unit 18 of inside right forward.Right feeding trolley 14 is identical with the structure of left feeding trolley 12, right The structure of head 15 is identical with the structure page of left head 13, there is the structure of auxiliary curved core rod unit 18 and the curved core rod unit 17 of inside left Structure is identical, below by by left feeding trolley 12, left head 13, the curved unit 17 of inside left structure exemplified by their structures with work Process is described in detail.

As shown in Figures 3 to 5, left feeding trolley 12 includes two straight lines being arranged parallel to being fixed in rack 11 Guide rail 21, the feeding slipway 22 being slidably mounted on line slideway 21, along the length direction cloth parallel to line slideway 21 The feeding rack 23 being fixed on putting in rack 11, the feeding main shaft that can be installed on around own axis on feeding slipway 22 24, installed in 24 front end of feeding main shaft and the three-clove style clamping jaw 240 that is driven by clamping jaw cylinder 27, for driving 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 Fig. 3, Fig. 5, Fig. 6 and Fig. 7, left head 13 includes mounting base 30, swing arm 31, clamping die unit 4, plug It is auxiliary to press from both sides unit 5, lifting unit 6, guided mode unit 7 and drive swing arm 31 with clamping die unit 4 around drive by same root drive shaft The bend pipe motor 32 that the rotation axis 01 of dynamic main shaft rotates.Wherein, drive shaft includes transmission shaft 33 and is fixed with transmission shaft 33 The connecting shaft 34 of connection, transmission shaft 33 are sequentially connected by gear drive or chain drive with bend pipe motor 32.

Mounting base 30 is fixed in rack 11 by fixing bolt, and whole left head 13 is fixed in rack 11.Pendulum Arm 31 is fixed on transmission shaft 33 by fixing bolt, to be rotated with drive shaft.

As shown in Fig. 3, Fig. 5 and Fig. 6, clamping die unit 4 includes circle mould 41 and clamping 42, and circle mould 41 is fixed on connecting shaft 34, to be rotated synchronously under the driving of drive shaft with swing arm 31 around rotation axis 01；Clamping 42 is fixed on clamping backer 43 On, clamping backer 43 is installed in swing arm 31 by clamp drive mechanism；Clamp drive mechanism bag is used to drive clamping 42 close Circle mould 41 and realize closure or realized away from circle mould 41 and open, with circle die cavity 410 and the clamping 42 on control circle mould 41 Clamping chamber closes and realizes clamping to pipe fitting or opening and realize the release to pipe fitting in the horizontal.

As shown in Fig. 3, Fig. 5 and Fig. 6, the auxiliary folder unit 5 of plug includes mounting base 50, auxiliary sandwich rod 51 and driver 52, auxiliary Sandwich rod 51 being axially slidably installed in mounting base 50 along feeding main shaft 24；Driver 52 is installed in peace by its stator Fill on seat 50, and its mover is fixedly connected with auxiliary sandwich rod 51, is moved back and forth vertically with pushing and pulling auxiliary sandwich rod 51.Wherein, drive Dynamic device 52 is straight-line displacement output device, may be selected from the group of linear motor, oil cylinder, cylinder or electric rotating machine and leading screw and nut mechanism Close, select oil cylinder in the present embodiment.

As shown in Fig. 3, Fig. 5 and Fig. 6, lifting unit 6 includes the installing plate 60 being fixed on by fixing bolt in swing arm 31, The vertical slide plate 62 being slidably mounted in by vertically arranged guide rail slide block mechanism 61 on installing plate 60, it is perpendicular for driving The driver 63 moved back and forth to slide plate 62 on vertical, and whether be moved to and give on vertical for detecting auxiliary sandwich rod 51 Material main shaft 24 concentrically arrives level detection sensor at the position of axis, should be exported in place to level detection sensor to control unit Detect signal so that control unit according in place detect signal control driver 63 mover vertically on displacement.Driving Device 63 is straight-line displacement output device, may be selected from linear motor, oil cylinder, cylinder, elects oil cylinder as in the present embodiment.The auxiliary folder of plug Unit 5 is fixed on vertical slide plate 62 by its mounting base 50, so as to drive vertical slide plate 62 to be led along straight line by driver 63 Rail slide block mechanism 61 moves back and forth on vertical and promotes the auxiliary folder unit 5 of plug to be moved back and forth on vertical, then promotes auxiliary folder Plug 51 rises to the position with the concentrically axis of feeding main shaft 24, to realize that driver 52 can promote auxiliary sandwich rod 51 from pipe fitting Stretched at front port in pipe fitting, or drop to the lower position positioned at feeding main shaft 24, to avoid the discharging of pipe fitting.And in swing arm 31 with clamping die unit 4 is rotated under the driving of drive shaft around rotation axis 01 when, enable whole plug it is auxiliary press from both sides unit 5 around Rotation axis 01 is rotated synchronously with the two around rotation axis 01.In the present embodiment, travel switch is selected to level detection sensor.

As shown in Fig. 3, Fig. 5, Fig. 6 and Fig. 7, guided mode unit 7 includes guided mode backer 70, guided mode 71, two-dimentional driving mechanism 72 And adjustment mechanism 73, wherein, guided mode 71 is installed on guided mode backer 71 by vertically arranged dovetail keyway mechanism 710, is led Mould backer 71 is installed in mounting base 30 by two-dimentional driving mechanism 72, and two-dimentional driving mechanism 72 is used to drive 72 edge of guided mode backer The axial direction of feeding main shaft 24 and vertically moved up with the horizontal of the axial direction, to realize the pipe fitting to clamping in feeding main shaft 24 One side clamping and vertically auxiliary pushes away during bend pipe.

The two dimension driving mechanism 72 includes the horizontal stroke being installed on by the guide rail slide block mechanism 720 being arranged along the horizontal on head 30 To slide plate 721, the traverse driver for promoting cross slide 721 to laterally move, the L-type installation being fixed on cross slide 721 Seat 722, and the axially driving device for promoting guided mode backer 71 to slide axially；Traverse driver is straight-line displacement output device, can Selected from linear motor, oil cylinder, cylinder etc., in the present embodiment selected from cylinder.Guided mode backer 71 passes through the axis along feeding main shaft 24 It is installed on to the straight-line guide rail slide block mechanism 724 of arrangement in L-type mounting base 722, axially driving device is straight-line displacement output device, Linear motor, oil cylinder, cylinder etc. are may be selected from, in the present embodiment, axially driving device is elected as including being installed in L-type mounting base 722 On electric rotating machine 723, the gear that is installed on the armature spindle of electric rotating machine 723 and be installed on guided mode backer 71 and and gear Matched spur rack, the spur rack are axial arranged along feeding main shaft 24.

Guided mode backer 70 is respectively installed with cantilevered support base up and down guided mode 71 at two side positions, be respectively lower cantalever formula Support base 725 and upper cantilever formula support base 727, screw rod end is provided with the screw hole on lower cantalever formula support base 725 against leading Lower adjusting screw 726 on 71 lower surface of mould, is provided with screw rod end against guided mode in the screw hole on upper cantilever formula support base 727 Upper adjusting screw 728 on 71 upper surfaces, so as to down be turned by the collaboration of upper and lower two adjusting screws to make guided mode 70 down Mobile or collaboration up turns and moves up guided mode 70, so as to reach to position of the guided mode 71 with respect to guided mode backer 70 on vertical It is adjusted.

As shown in Figures 3 and 4, the curved unit 17 of inside left include be installed on rack 11 on L-type mounting base 80, auxiliary curved plug and It is used for the driver 82 for pushing and pulling auxiliary curved plug in mounting base 80, in the present embodiment, auxiliary curved plug selects cylinder bulb Plug, driver 82 are oil cylinder.

In the present embodiment, when this bending machine 1 is placed in the horizontal plane, i.e., when drive shaft is vertically arranged, feeding The axial direction of main shaft 24 arranges that listed " transverse direction " refers to the level side perpendicular with the axial direction of feeding main shaft 24 in text in the horizontal direction To also with clamping in the axial mutually orthogonal of 24 upper pipe fitting of feeding main shaft；Listed " vertical " refer to it is vertical, i.e., its also with feeding main shaft 24 axial direction is mutually orthogonal." front port " and " rear port " of pipe fitting refers to, the direction of circle mould 41, i.e. edge are directed toward along feeding main shaft 24 Feeding main shaft is directed toward the direction of clamping die unit, and the downstream port of pipe fitting is front port, and upstream port is rear port.

As shown in Figures 1 to 10, control unit includes processor, memory and for receiving operating personnel's input instruction Touch-screen, memory storage have computer program, and processor after the operational order inputted on the touchscreen is received, deposit by execution Corresponding computer program in memory is stored up, realizes gripping step S1 as shown in Figure 8, bend pipe step S2 and discharge step S3, to perform bend pipe operation to pipe fitting.

Gripping step S1, axial advancement of the left feeding trolley 12 along feeding main shaft 24, by clamping in feeding main shaft 24 Treat that the front end of elbow member 02 is sent into the clamping die cavity of clamping die unit 4；Driver 52 drives auxiliary sandwich rod 51 from pipe fitting 02 front port 021 stretches into and extends in by clamping member of pipe fitting, and auxiliary curved core rod unit 17 is by auxiliary curved plug 81 from pipe fitting 02 Rear port 020 stretches into and extends the treating at bent portion of pipe fitting 02；Clamping die unit 4 controls clamping 42 close to circle mould 41 and presss from both sides Hold being laterally moved by clamping member 022, the driving guided mode 70 of guided mode unit 7 with one side clamping pipe fitting for pipe fitting 02.

In this step, pipe fitting is its front end by clamping member, so as to bend pipe go out the half of four-way reversing valve D connection into Product.The distribution schematic diagram of each critical piece is as shown in figure 9, wherein after clamping, auxiliary sandwich rod 51 to the inner wall by clamping member 022 into Row support, and clamping 42 applies chucking power radially inwardly with circle mould 41 on the outer wall by clamping member 022, so that in pipe Part radially to being clamped by clamping member 022, with efficiently reduce by clamping member 022 during bend pipe inner side tube wall by should Power and outside tube wall tension power and there is gradient in end face that front port 021 occur.

Bend pipe step S2, the driving clamping die unit 4 of bend pipe motor 32 are rotated around rotation axis 01 to be carried out to pipe fitting 02 Bend pipe operates, meanwhile, guided mode unit 7 drives guided mode 70 to be axially moveable with auxiliary ejector sleeve part 02.

During bend pipe, the bulb end of auxiliary curved plug 81 can carry out pipe fitting bent portion against spacing and be effectively prevented from The problems such as its cross section variation ellipse.The distribution schematic diagram of each critical piece is as shown in Figure 10 after completion bend pipe.

Discharge step S3, clamping die unit 4 control clamping 42 to be opened away from circle mould 41, and driver 52 is by auxiliary sandwich rod 51 extract out from pipe fitting, and driver 63 controls the auxiliary folder unit 5 of whole plug to move down to reduce the interference to pipe fitting discharging.

By adding the auxiliary folder unit 5 of above-mentioned plug, i.e., during bend pipe, pass through auxiliary sandwich rod 51 and circle mould 41, clamping 42 inside and outside clamp cooperation and improve to the clamping force by clamping member, you can reduce pipe portion translocation distance, and be aided with guided mode 70 and exist Size tubulars as shown in Figure 2 to reduce institute's tension stress on the outside of bent portion, are carried out bend pipe processing by the auxiliary thrust during bend pipe Afterwards, its end face gradient L2 can be contracted to 0.2-0.3 millimeters from 1 millimeter of current techniques, so as to directly be turned in engineering With use, plane machining is carried out without carrying out end again, not only saves end cut program, and reduce waste of material.

The central scope of the utility model is by adding the auxiliary folder unit of plug on head, is coordinated with clamping die unit And radially clamp pipe fitting in pipe fitting, with can clamp well pipe fitting by clamping member, efficiently reduce pipe fitting by clamping member Inner and outer deforms shift amount during bend pipe, reaches the requirement saved the smooth process in end face with save material, according to this Design, clamping die assembly, guided mode unit, lifting unit, auxiliary curved core rod unit, the structure of feeding trolley also have a variety of aobvious and easy The change seen.Wherein, the installation relation between head and rack is not limited to directly be fixedly connected with pass in above-described embodiment System, can be also indirectly mounted in rack by intermediary agency, such as is provided with rack for controlling whole head to exist Vertical in the axial direction of feeding main shaft, in the axial direction or in the axial transverse direction in a direction or two Movement on a above direction.Clamping die unit is not limited in above-described embodiment be opened with the transverse direction that clamping forms by circle mould Enclosed clamping device, may also be arranged to the syntype structure up and down on vertical.In addition, bend pipe motor is formed in the utility model Bend pipe driver, but the structure of bend pipe driver is not limited to the electric machine structure in above-described embodiment, can also use other Rotary power output device forms the bend pipe driver in the utility model, such as by rack and pinion mechanism by cylinder, oil cylinder Linear motion is converted into the rotary motion of gear and outputting rotary power.

Claims (8)

1. a kind of bending machine, including control unit, rack and the machine controlled in the rack and by described control unit Head；The head includes guided mode unit, clamping die unit and bend pipe driver, and the clamping die unit is used to clamp pipe fitting By clamping member, the bend pipe driver drives rotation of the clamping die unit around the drive shaft by drive shaft Axis is rotated to carry out bend pipe operation to pipe fitting；

It is characterized in that, the head is equipped with the auxiliary folder unit of plug, the auxiliary folder unit of plug is driven by the drive shaft Ground is rotated synchronously with the clamping die unit around the rotation axis, and the auxiliary folder unit of plug includes：

Auxiliary sandwich rod, it is described in by clamping member for stretching into and extending from the front port of pipe fitting, match somebody with somebody with the clamping die unit Close described by clamping member radially to be clamped in pipe fitting.

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

The auxiliary folder unit of plug further includes the driver for driving the auxiliary sandwich rod to stretch into or detach pipe fitting.

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

The clamping die unit includes the circle mould being installed in the drive shaft, and described to clamp with the round mould cooperation By the clamping of clamping member；

The clamping is installed on by clamp drive mechanism in the swing arm of the head, and the swing arm is driven by the drive shaft Ground is rotated synchronously with the round mould；

The auxiliary folder unit of plug is installed in the swing arm.

4. bending machine according to claim 3, it is characterised in that lifting unit, the lifting are installed with the swing arm Unit is used to drive the auxiliary folder relatively described round mould of unit of the plug back and forth to lift on vertical.

5. bending machine according to claim 1, it is characterised in that the head is equipped with lifting unit, and the lifting is single Member is used to drive the relatively described clamping die unit of the auxiliary sandwich rod back and forth to lift on vertical.

6. bending machine according to claim 4 or 5, it is characterised in that the lifting unit is included to level detection sensor；

It is described to level detection sensor be used for detect the auxiliary sandwich rod whether be raised to the feeding main shaft of feeding trolley altogether in At the position of mandrel line, and signal is detected in place to described control unit output.

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

The guided mode unit includes guided mode backer and guided mode, and the guided mode is installed on by vertically arranged dovetail keyway mechanism On the guided mode backer, the guided mode backer is respectively installed with cantilevered support base up and down the guided mode at two side positions；

Screw rod end is installed against the adjusting screw of the guided mode on the cantilevered support base, the institute positioned at the guided mode both sides Adjusting screw is stated to be used to carry out synergic adjustment to position of the guided mode on vertical.

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

The rack is equipped with auxiliary curved core rod unit, and the auxiliary curved core rod unit includes stretching into the to be curved of pipe fitting from pipe fitting rear port Auxiliary curved plug at pipe portion；

The front end by clamping member for pipe fitting.