CN205673487U - Pipe expander - Google Patents

Abstract

This utility model provides a kind of pipe expander, comprises support, pay-off, shaped device, feeding device, pipe expander and drawing mechanism；This support has a mobile route, pay-off is positioned in mobile route, and can be in a liftout position, feeding position, discharge position, ready position returns and is circulated displacement between liftout position, feeding device has a pan feeding path moved for materials in the tube, so that materials in the tube are pushed on pay-off, shaped device has lower mold and the mold of some liftables Guan Bi, when pay-off is positioned at discharge position, materials in the tube on pay-off are positioned in lower mold, and make mold close with lower mold, pipe expander has some pipe expanding unit and fixed cell, when pay-off is positioned at discharge position, materials in the tube in pipe expanding unit system lower mold carry out expander, materials in the tube are then fixed by fixed cell, drawing mechanism is positioned at the terminal of this mobile route；So reach to reduce manpower, the expander operation of time saving automatization.

Description

Pipe expander

Technical field

This utility model relates to a kind of automated machine, in more detail relates to a kind of pipe expander.

Background technology

Press, when being intended to a metal tube is carried out expander operation, with the most common operating type, be to take gold with manpower Belong to pipe and carry out expander, one time one pipe to expander machinery, take out with manpower again after expander, the most quite expend the time, and also phase Working as labor intensive, therefore volume production speed is slow, and unit cost is high.

Utility model content

In view of this, the purpose of this utility model is to provide a kind of pipe expander, to improve in background technology, existing expander Operation has the problems such as labor intensive and time.

Edge this, this utility model is to provide a kind of pipe expander, includes: a support, has a mobile route；One feeding dress Putting, have a cradle, lifting actuator and a driven in translation part, this cradle is positioned in the mobile route of this support, should Cradle is provided with some chute feeders according to preset space length arrangement, and this lifting actuator and this driven in translation part are arranged at this support Upper and link with this cradle, make this cradle by the reciprocal action of this lifting actuator Yu this driven in translation part, and Yu Yiding Material position, feeding position, discharge position, ready position return and are circulated displacement between this liftout position；One feeding device, if It is placed on this support, is positioned at the starting point of this mobile route, in order to materials in the tube are pushed in the chute feeder of this cradle；One molding dress Putting, have some lower mold and some molds, this lower mold is located at the stage casing of this mobile route, and this mold is correspondingly located at The top of this lower mold, and shift reciprocately can be carried out between a make position a to open position, when this cradle is positioned at blowing During position, the materials in the tube on this cradle are positioned in this lower mold, and this mold is also positioned at make position and closes with this lower mold Close；One pipe expander, has some pipe expanding unit and the fixed cell with this pipe expanding unit equal number, and this pipe expanding unit sets It is placed on this support, and is positioned at the side of this shaped device, reciprocal position can be carried out between an expander position a to retracted position Moving, this fixed cell is arranged on this support, and is positioned at the opposite side of this shaped device, can be in a fixed position to a rollback position Carrying out reciprocal displacement between putting, when this cradle is positioned at discharge position, this pipe expanding unit is positioned at expander position, with to lower mold Materials in the tube in tool carry out expander, and this fixed cell is then positioned at fixed position, to be fixed these materials in the tube；One drawing mechanism, It is arranged on this support, is positioned at the terminal of this mobile route, in order to the materials in the tube after expander are sent.

Above-mentioned pipe expander, wherein, this shaped device has more a fixed mount and some mold actuators, this fixed mount Being arranged on this support, be positioned at the middle section position of this mobile route, these some lower mold depend on pre-along the direction of this mobile route Being fixedly arranged at this fixed mount bottom position side by side, these some mold actuators are arranged on this fixed mount determining deviation, if should Dry mold links with respectively this mold actuator respectively, extremely should in this make position to drive by this mold actuator Straight line lifting shift reciprocately is carried out between open position.

Above-mentioned pipe expander, wherein, this lower mold has a forming tank placed for materials in the tube and at least and wears for cradle The releasing slots of warp.

Above-mentioned pipe expander, wherein, this mold actuator is oil hydraulic cylinder.

Above-mentioned pipe expander, wherein, this lifting actuator is in order to drive this cradle to carry out reciprocal lifting displacement, and this is put down Move actuator in order to drive this cradle to carry out longitudinal alternating translational along this mobile route.

Above-mentioned pipe expander, wherein, this lifting actuator and this driven in translation part are pneumatic cylinder.

Above-mentioned pipe expander, wherein, this feeding device has one and enters bin and a pan feeding actuator, and this pan feeding sets up and is placed in On this support, and being positioned at the starting point of this mobile route, this enters bin and has a pan feeding path moved for materials in the tube, and this pan feeding drives Part is arranged on this support, and can move back and forth between a pusher position in a retrieving position.

Above-mentioned pipe expander, wherein, this enters bin and includes oblique frame, has a horizontal chute bottom this oblique frame, and this is oblique Having opening port bottom frame and lead to this chute, this pan feeding actuator is located at this chute one end, this oblique frame for overlapped materials in the tube, materials in the tube from Opening port is fallen in chute, and materials in the tube are released by this pan feeding actuator by the chute other end.

Above-mentioned pipe expander, wherein, this pan feeding actuator is pneumatic cylinder.

Above-mentioned pipe expander, wherein, the pan feeding path of this feeding device is made up of at least one inclined-plane.

Above-mentioned pipe expander, wherein, this pipe expanding unit has an expander actuator and a molding head, this expander actuator Being arranged on this support, and be positioned at the side of this shaped device, this molding die is linked on this expander actuator, to be expanded by this The effect of pipe actuator and between an expander position a to retracted position, carry out reciprocal displacement, this fixed cell has one to be fixed Actuator and one fixes die head, and this fixed drive part is arranged on this support, and is positioned at the opposite side of this shaped device, and this is fixed Die head is linked on this fixed drive part, enters in a fixed position with the effect by this fixed drive part between a retracted position The displacement that row is reciprocal, when this cradle is positioned at discharge position, this molding die is positioned at expander position, with in lower mold Materials in the tube carry out expander, and these materials in the tube are then fixed by this fixing die head.

Above-mentioned pipe expander, wherein, this expander actuator and this fixed drive part are oil hydraulic cylinder.

Above-mentioned pipe expander, wherein, this drawing mechanism has a discharge rack and a discharging actuator, and this discharge rack is arranged at On this support, and being positioned at the terminal of this mobile route, this discharge rack has a discharging path, and this discharging actuator is arranged at this machine On seat, and link with this discharge rack, and this discharge rack can be driven to move back and forth between a unloading position in steady position.

Above-mentioned pipe expander, wherein, this discharge rack has a vertical frame and a horizontal frame, and this vertical frame bottom has Having an opening port, the width of this opening port is more than the width of this cradle, and vertical frame upper end links this discharging actuator, should Having an opening port on rear side of horizontal frame, front side has a loose joint end, and this horizontal frame makes rear side with this loose joint end as fulcrum Can freely up and down swing, the opening port width of this horizontal frame is more than the width of cradle but is less than the length of materials in the tube, this water It is attached at actively on vertical frame on rear side of flat frame.

Above-mentioned pipe expander, wherein, this discharging actuator is pneumatic cylinder.

Above-mentioned pipe expander, wherein, the discharging path of this drawing mechanism is made up of at least one inclined-plane.

Above-mentioned pipe expander, has further included a controller, in order to control this shaped device, pay-off, feeding device, expansion The start time-histories of pipe device and this drawing mechanism.

Above-mentioned pipe expander, wherein, this pay-off has more sliding track mechanism, and this sliding track mechanism is located on lifting actuator On, and can be moved up and down by the control of lifting actuator, this cradle is slidedly arranged on this sliding track mechanism, and by this driven in translation Part controls to move horizontally on this sliding track mechanism.

So this utility model carries out driven by program control to each portion component, with reach to reduce manpower, time saving from Dynamicization expander operation, and this utility model can carry out the work of expander by the most multiple pipes simultaneously, the speed of volume production is fast, is suitable for A large amount of productions, and unit cost is low.

Accompanying drawing explanation

Fig. 1 is the three-dimensional combination figure of this utility model one preferred embodiment.

Fig. 2～Figure 15 is the illustrative view of embodiment illustrated in fig. 1.

Description of reference numerals: pipe expander 10；Support 10；Shaped device 20；Fixed mount 2；Lower mold 22；Forming tank 221；De- From groove 222；Mold actuator 23；Mold 24；Pay-off 30；Cradle 31；Chute feeder 311；Lifting actuator 32；Flat Move actuator 33；Sliding track mechanism 34 feeding device 40；Enter bin 41；Pan feeding actuator 42；Tiltedly frame 43；Chute 44；Opening port 45； Pipe expander 50；Pipe expanding unit 51；Expander actuator 511；Molding die 512；Fixed cell 52；Fixed drive part 521；Gu Cover half head 522；Drawing mechanism 60；Discharge rack 61；Vertical frame 611；Horizontal frame 612；Opening port 613；Opening port 614；Live Connect end 615；Discharging actuator 62；Materials in the tube 90.

Detailed description of the invention

Further understand and approval for making your juror can feature of the present utility model and its feature be had, hereby arrange Lift following preferred embodiment and coordinate graphic being described as follows:

Referring to Fig. 1～Figure 15, be a kind of pipe expander 100 of being provided of this utility model one preferred embodiment, it is main Include support 10, shaped device 20, pay-off 30, feeding device 40, pipe expander 50 and discharging dress Put 60 and one controller (not shown) wherein:

Refer to Fig. 1, this support 10, can be stably placed in a plane (such as ground), on this support 10 and be provided with One virtual mobile route linearly, using the carriage direction processed as materials in the tube.

Refer to Fig. 1～Fig. 2, this shaped device 20, there is a fixed mount 21, some lower mold 22, some molds drive Moving part 23 and some molds 24；This fixed mount 21 is arranged on this support 10, and is positioned at the middle section position of this mobile route, These some lower mold 22 are fixedly arranged at this fixed mount 21 bottom position along the direction of this mobile route according to preset space length ground side by side, should Lower mold 22 has forming tank 221 and at least one horizontal releasing slots 222 of a longitudinal direction, and these some mold actuators 23 are arranged On this fixed mount 21, in the present embodiment, this mold actuator 23 is oil hydraulic cylinder, these some molds 24 respectively with respectively should Mold actuator 23 links, and is correspondingly located at this lower mold 22 top position, to be driven by this mold actuator 23 And between a make position a to open position, carry out straight line lifting shift reciprocately.

Refer to Fig. 1～Figure 15, this pay-off 30, have cradle 31, lifting actuator 32, driven in translation part 33 and Sliding track mechanism 34；This cradle 31 is positioned in the mobile route of this support 10, and this cradle 31 is provided with some according to preset space length The chute feeder 311 of arrangement, this lifting actuator 32 has two, is respectively arranged at this support 10 both sides, and this sliding track mechanism 34 is located at On lifting actuator 32, and can be made upper and lower movement by the control of lifting actuator 32, this cradle 31 is slidably installed in slide rail machine On structure 34, and can move horizontally in the mobile route of support 10, in the present embodiment, this sliding track mechanism 34 has two groups, for respectively From being located at accordingly on each lifting actuator 32, this driven in translation part 33 is arranged on this support 10, and with this cradle 31 even Knot, longitudinally opposed in the alternating translational of this sliding track mechanism 34 to drive this cradle 31 to carry out along this mobile route.So, this send Bin 31 can by the reciprocal action of this lifting actuator 32 with this driven in translation part 33, and in a liftout position, feeding position, put Material position, ready position return and are circulated displacement between this liftout position.This lifting actuator 32 and this driven in translation part 33 For pneumatic cylinder.

Refer to Fig. 1, Fig. 3～Fig. 5, this feeding device 40, have one and enter bin 41 and a pan feeding actuator 42, this pan feeding Frame 41 is arranged on this support 10, and is positioned at the start position of this mobile route, this enter bin 41 have one for materials in the tube 90 with The pan feeding path that the power of relying on for support moves, this pan feeding actuator 42 is arranged on this support 10, and can be in a retrieving position to a pusher Move back and forth between position.This pan feeding actuator 42 is pneumatic cylinder.In the present embodiment, this enters bin 41 and includes oblique frame 43, there is bottom this oblique frame 43 a horizontal chute 44, bottom this oblique frame 43, there is opening port 45 and lead to this chute 44, this pan feeding Actuator 42 is located at this chute 44 one end, and materials in the tube 90 are the most overlapped on this oblique frame 43, and of the end is fallen into cunning by gravity In groove 44, utilizing pan feeding actuator 42 materials in the tube 90 to be released by this chute 44 one end open mouth 45, the present embodiment has two groups of pan feedings Frame 41 and two groups of pan feeding actuators 42.

Refer to Fig. 1, Figure 12～Figure 14, this pipe expander 50, have some pipe expanding unit 51 and with this pipe expanding unit The fixed cell 52 of 51 equal numbers, this pipe expanding unit 51 has an expander actuator 511 and a molding head 512, this expander Actuator 511 is arranged on this support 10, and is positioned at the side of this shaped device 20, and this molding die 512 is linked to this expander On actuator 511, between an expander position a to retracted position, carry out reciprocal position with the effect by this expander actuator 511 Moving, this fixed cell 52 has a fixed drive part 521 and and fixes die head 522, and this fixed drive part 521 is arranged at this support On 10, and being positioned at the opposite side of this shaped device, this fixing die head 522 is linked on this fixed drive part 521, to be fixed by this The effect of actuator 521 and between a fixed position a to retracted position, carry out reciprocal displacement.It is right that this fixing die head 522 has Should the shape of materials in the tube 90 and external diameter less than the internal diameter of materials in the tube 90 so that stretching in materials in the tube 90, this expander actuator 511 is solid with this Determine actuator 521 for oil hydraulic cylinder.

Refer to Fig. 1, Fig. 6～Figure 11 and Figure 14, this drawing mechanism 60, it is arranged on this support 10, there is a discharge rack 61 and a discharging actuator 62, this discharge rack 61 is arranged on this support 10, and is positioned at the final position of this mobile route, should Discharge rack has a discharging path moved for materials in the tube by gravity, and this discharging actuator 62 is arranged on this support 10, and with This discharge rack 61 links, and this discharge rack 61 can be driven to move back and forth between a unloading position in steady position.This goes out Material actuator 62 is pneumatic cylinder.In the present embodiment, this discharge rack 61 has vertical frame 611 and a horizontal frame 612, should Vertical frame 611 bottom has an opening port 613, and the width of this opening port 613 is more than the width of this cradle 31, and upright frame Frame 611 upper end links this discharging actuator 62, has an opening port 614 on rear side of this horizontal frame 612, and front side has a loose joint end 615, this horizontal frame 612 makes rear side freely up and down to swing with this loose joint end 615 as fulcrum, this horizontal frame 612 and The width of opening port 614 is more than the width of cradle 31 but is less than the length of materials in the tube 90, connects actively on rear side of this horizontal frame 612 Knot is on vertical frame 611.

This controller, in order to control the start time-histories of above-mentioned each component.

Therefore above-mentioned be a kind of pipe expander 100 each portion component that this utility model one preferred embodiment provided and The introduction of assembling mode, is described as follows handling characteristics the most again:

When this utility model to be used carries out expander operation to materials in the tube 90, first by the mold by this shaped device 20 Actuator 23 drives this mold 24 to move to open position (as shown in Figure 2), makes this mold 24 and this lower mold in dividing From state.

Then, the materials in the tube 90 being intended to carry out expander operation put into entering in bin 41 in this feeding device 40, make this materials in the tube 90 move to the path that this pan feeding actuator 42 moves along this pan feeding path, and by this pan feeding actuator 42 by retrieving position Mobile to pusher position, and these materials in the tube 90 are pushed in the chute feeder 311 of this cradle 31 and are positioned (as shown in Figure 3), After materials in the tube 90 are pushed on cradle 31, this pan feeding actuator 42 is just retracted into retrieving position and awaits orders (as shown in Figure 4), and is somebody's turn to do When pan feeding actuator 42 is retracted into retrieving position, these materials in the tube 90 entered on bin move to this pan feeding along pan feeding path the most once again In the path that actuator 42 moves (as shown in Figure 5), to prepare by promotion next time.

Then, the lifting actuator 32 of this pay-off 30 drive this cradle 31 toward rising, i.e. moved by ready position Move to liftout position (as shown in figure 15), make this cradle 31 pass the releasing slots 222 of this lower mold 22, and will be initially positioned at this Materials in the tube 90 in lower mold 22 are propped up by this cradle 31 and are positioned at chute feeder 311 (as shown in Figure 6).

Then, the discharging actuator 62 of this drawing mechanism 60 drives this discharge rack 61 to be declined mobile extremely preparation by unloading position Position (as shown in Figure 7).

Then, then driven this cradle 31 by the driven in translation part 33 of this pay-off 30, liftout position move along The terminal direction in path moves at this feeding position (as shown in Fig. 8 and Figure 15).

, then driven this cradle 31 to decline by the lifting actuator 32 of this pay-off 30 and moved by feeding position then To discharge position (as shown in Fig. 9 and Figure 15), now materials in the tube 90 meeting in close mobile route final position on this cradle 31 (as shown in Figure 10) is propped up by the discharge rack 61 being positioned at ready position.And this is one simultaneously, this cradle 31 is positioned at mobile road The materials in the tube 90 of footpath middle section position then can be placed in the forming tank 221 of this lower mold 22.

Then, then from the driven in translation part 33 of this pay-off 30 drive this cradle 31 toward near this mobile route starting point Direction translation, i.e. moved to ready position (as shown in figure 15) by discharge position.

Then, move while ready position by feeding position at this cradle 31, the mold of this shaped device 20 Actuator 23 also drives this mold 24 to be dropped to make position (as shown in figure 11) by open position, and with in this lower mold 22 Lower Guan Bi, makes materials in the tube 90 be fixed between upper and lower mould 24,22.

Then, then by the expander actuator 511 of this pipe expander 50 this molding die 512 is driven to be moved by retracted position To expander position, so that materials in the tube 90 one end being fixed between upper and lower mould 24,22 is carried out expander operation (as shown in figure 12), And while this molding die 512 moves, this fixed drive part 521 also drives this fixing die head 522 to be moved by retracted position To fixed position, to be fixed operation (as shown in figure 13) to by materials in the tube 90 other end between fixing upper and lower mould 24,22, To prevent materials in the tube 90 from deforming and shifting.After materials in the tube 90 expansion-molding, just this molding die 512 is moved by expander position and return To retracted position, and this fixing die head 522 is also moved by fixed position and is retracted into retracted position.This molding die 512 with should While fixing die head is return, the discharging actuator 62 of this drawing mechanism 60 also drives this discharge rack 61 to rise to unloading position (as shown in figure 14), make the materials in the tube 90 being positioned on this discharge rack can move along this discharging path to a collection container (in figure not Show) in collected.

Consequently, it is possible to repeat above-mentioned program, just automatically and advantageously materials in the tube can be carried out expander operation, to save people Power, time and cost.

It addition, in above-described embodiment, this pipe expander 50 is positioned at the expander list of first half section (i.e. near mobile route starting point) Unit 51 is that materials in the tube 90 carry out half-formed action, and the pipe expanding unit 51 of second half section (i.e. near mobile route terminal) is then to pipe Material 90 is shaped action, to be avoided materials in the tube 90 to sustain damage by the processing of two-period form.In the present embodiment, from pan feeding, through secondary Compression molding, to discharging, is all automated job, and once can process multiple materials in the tube 90, and speed of production relatively traditional approach is wanted Go out a lot soon.

Furthermore, in above-described embodiment, the pan feeding path of this feeding device and the discharging path of this drawing mechanism are by least one Inclined-plane is constituted.

Above taken off, preferred embodiment the most provided by the utility model, and be not used to limit this utility model Practical range, the impartial change that all relevant art in the art do according to this utility model, all should belong to this reality By novel contained scope.

Claims (18)

1. a pipe expander, it is characterised in that include:

One support, has a mobile route；

One pay-off, has a cradle, lifting actuator and a driven in translation part, and this cradle is positioned at the shifting of this support In dynamic path, this cradle is provided with some chute feeders according to preset space length arrangement, this lifting actuator and this driven in translation part It is arranged on this support and links with this cradle, making this cradle by the mutual work of this lifting actuator with this driven in translation part With, and in a liftout position, feeding position, discharge position, ready position return and be circulated displacement between this liftout position；

One feeding device, is arranged on this support, is positioned at the starting point of this mobile route, in order to materials in the tube are pushed in this cradle In chute feeder；

One shaped device, has some lower mold and some molds, and this lower mold is located at the stage casing of this mobile route, this upper mold Tool is correspondingly located at the top of this lower mold, and can carry out shift reciprocately, when this between a make position a to open position When cradle is positioned at discharge position, the materials in the tube on this cradle are positioned in this lower mold, this mold be positioned at make position and Close with this lower mold；

One pipe expander, has some pipe expanding unit and the fixed cell with this pipe expanding unit equal number, this pipe expanding unit It is arranged on this support, and is positioned at the side of this shaped device, it is possible to carry out reciprocal between an expander position a to retracted position Displacement, this fixed cell is arranged on this support, and is positioned at the opposite side of this shaped device, it is possible in a fixed position to Carrying out reciprocal displacement between retracted position, when this cradle is positioned at discharge position, this pipe expanding unit is positioned at expander position, with right Materials in the tube in lower mold carry out expander, and this fixed cell is then positioned at fixed position, to be fixed these materials in the tube；

One drawing mechanism, is arranged on this support, is positioned at the terminal of this mobile route, in order to the materials in the tube after expander to be sent.

Pipe expander the most according to claim 1, it is characterised in that this shaped device also has a fixed mount and some upper molds Tool actuator, this fixed mount is arranged on this support, is positioned at the middle section position of this mobile route, and these some lower mold are along this shifting The direction in dynamic path is fixedly arranged at this fixed mount bottom position according to preset space length ground side by side, and these some mold actuators are arranged at On this fixed mount, these some molds link with respectively this mold actuator respectively, being driven by this mold actuator Straight line lifting shift reciprocately is carried out between this make position to this open position.

Pipe expander the most according to claim 1, it is characterised in that this lower mold have one for materials in the tube place forming tank and For at least one releasing slots passed for cradle.

Pipe expander the most according to claim 2, it is characterised in that this mold actuator is oil hydraulic cylinder.

Pipe expander the most according to claim 1, it is characterised in that this lifting actuator is past in order to drive this cradle to carry out Multiple lifting displacement, this driven in translation part carries out longitudinal alternating translational in order to drive this cradle along this mobile route.

Pipe expander the most according to claim 1, it is characterised in that this lifting actuator and this driven in translation part are air pressure Cylinder.

Pipe expander the most according to claim 1, it is characterised in that this feeding device has one and enters bin and pan feeding driving Part, this pan feeding sets up and is placed on this support, and is positioned at the starting point of this mobile route, and this enters bin and has one for entering that materials in the tube move Material path, this pan feeding actuator is arranged on this support, and back and forth can move between a pusher position at a retrieving position Dynamic.

Pipe expander the most according to claim 7, it is characterised in that this enters bin and includes oblique frame, has bottom this oblique frame One horizontal chute, has, bottom this oblique frame, the opening port leading to this chute, and this pan feeding actuator is located at this chute one end, and this is oblique Frame is for overlapped materials in the tube, and materials in the tube are fallen into chute from opening port, and materials in the tube are released by this pan feeding actuator by the chute other end.

Pipe expander the most according to claim 7, it is characterised in that this pan feeding actuator is pneumatic cylinder.

Pipe expander the most according to claim 7, it is characterised in that the pan feeding path of this feeding device is by least one inclined-plane Constituted.

11. pipe expanders according to claim 1, it is characterised in that this pipe expanding unit has an expander actuator and one one-tenth Pattern head, this expander actuator is arranged on this support, and is positioned at the side of this shaped device, and this molding die is linked to this expansion On pipe actuator, between an expander position a to retracted position, carry out reciprocal displacement with the effect by this expander actuator, This fixed cell has a fixed drive part and and fixes die head, and this fixed drive part is arranged on this support, and is positioned at this one-tenth The opposite side of type device, this fixing die head is linked on this fixed drive part, and solid one with the effect by this fixed drive part Location is put and is carried out reciprocal displacement between a retracted position, and when this cradle is positioned at discharge position, this molding die is positioned at expansion Pipe position, so that the materials in the tube in lower mold are carried out expander, these materials in the tube are then fixed by this fixing die head.

12. pipe expanders according to claim 11, it is characterised in that this expander actuator and this fixed drive part are oil pressure Cylinder.

13. pipe expanders according to claim 1, it is characterised in that this drawing mechanism has a discharge rack and a discharging is driven Moving part, this discharge rack is arranged on this support, and is positioned at the terminal of this mobile route, and this discharge rack has a discharging path, should Discharging actuator is arranged on this support, and links with this discharge rack, and this discharge rack can be driven in steady position to Move back and forth between unloading position.

14. pipe expanders according to claim 13, it is characterised in that this discharge rack has a vertical frame and a horizontal pane Frame, this vertical frame bottom has an opening port, and the width of this opening port is more than the width of this cradle, and vertical frame upper end Linking this discharging actuator, have an opening port on rear side of this horizontal frame, front side has a loose joint end, and this horizontal frame is lived with this Connect end makes rear side freely up and down to swing for fulcrum, and the opening port width of this horizontal frame is more than the width of cradle but little In the length of materials in the tube, it is attached at actively on vertical frame on rear side of this horizontal frame.

15. pipe expanders according to claim 13, it is characterised in that this discharging actuator is pneumatic cylinder.

16. pipe expanders according to claim 13, it is characterised in that the discharging path of this drawing mechanism is by least one inclined-plane Constituted.

17. pipe expanders according to claim 1, it is characterised in that also include a controller, in order to control this molding dress Put, pay-off, feeding device, pipe expander and the start time-histories of this drawing mechanism.

18. pipe expanders according to claim 1, it is characterised in that this pay-off also has sliding track mechanism, this slide rail machine Structure is located on lifting actuator, and can be moved up and down by the control of lifting actuator, and this cradle is slidedly arranged on this slide rail machine On structure, and controlled by this driven in translation part and can move horizontally on this sliding track mechanism.