CN106270053B - A kind of pipe bending mechanism of the short U bend pipes automatic moulding machine of thin-walled - Google Patents
A kind of pipe bending mechanism of the short U bend pipes automatic moulding machine of thin-walled Download PDFInfo
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- CN106270053B CN106270053B CN201610778107.8A CN201610778107A CN106270053B CN 106270053 B CN106270053 B CN 106270053B CN 201610778107 A CN201610778107 A CN 201610778107A CN 106270053 B CN106270053 B CN 106270053B
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- core bar
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/05—Bending tubes using mandrels or the like co-operating with forming members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/04—Bending tubes using mandrels or the like the mandrel being rigid
Abstract
The present invention relates to technical field of automation equipment, disclose a kind of pipe bending mechanism of the short U bend pipes automatic moulding machine of thin-walled, the forming elbow of the center section of the short U bend pipes of thin-walled can be completed, and it can effectively reduce waste of material, tube wall is avoided fold occur, ensure product quality and service life, should also have the characteristics of operating efficiency is high, and automaticity is high.The technical solution adopted by the present invention is：A kind of pipe bending mechanism of the short U bend pipes automatic moulding machine of thin-walled, it is characterised in that：At least there are a fixed part, a semicircle mould, a movable part and No. three drive mechanisms, one end of fixed length tubing is clamped in fixed part, activity coordinates in movable part after the other end crosses semicircle mould, movable part is driven to swing by No. three drive mechanisms, the stage casing of fixed length tubing is bent into segmental arc around semicircle mould, form the short U bend pipes of thin-walled.
Description
Technical field
The present invention relates to be used in technical field of automation equipment, more particularly to a kind of short U bend pipes automatic moulding machine of thin-walled
Bend the curved pipe bending mechanisms of U.
Background technology
Continuous progressive and industrial with science and technology develop rapidly, and the tubing through bending machining is in the industry
Demand gradually increases, the quality of bending quality, will directly influence the reasonable structures of these industry products, security and reliable
Property.The short U bend pipes of thin-walled with weld-ring are the important components of heat exchanger, are applied in the equipment such as heat exchanger, air-conditioning, refrigerator
It is extremely wide.
The short U bend pipes of thin-walled with weld-ring on existing market, either bent pipe forming technology or set ring welding technology, are adopted substantially
By hand or semiautomatic working mode, the problems such as labor intensity is big, and efficiency is low, formed precision difference in actual production be present.
In order to solve the problems, such as bent pipe forming technology this aspect, in China Patent Publication No. CN104826925A, Zhangjiagang
Industrial technology research institute of Jiangsu University of Science and Technology combines with Jiangsu University of Science and Technology discloses a kind of brake forming production line, its production line
Including unreeling structure, feeding straightener, shut-off mechanism, brake forming equipment and feed mechanism, wherein brake forming equipment are led to
Center gripping means grips materials in the tube, the independent wrap direction of left and right double end are crossed, although being provided with by the bend molding apparatus of left and right two
Clamping device, can be to playing positioning action, but for the short U forming elbows of thin-walled, except both ends during materials in the tube bend pipe
Straight length, mid portion are required for carrying out flexural deformation, and clamping position area is restricted during also implying that bend pipe, is not easy
Multipoint clamping, carry out the short U bend pipes of thin-walled according to the program and process, fold, materials in the tube bite internal diameter will occur for the U-shaped cambered surface of materials in the tube
Phenomena such as diminution, influence materials in the tube circulation flow, service life phenomena such as.
The content of the invention
The technical problem to be solved in the present invention is to overcome the shortcomings of above-mentioned background technology, there is provided a kind of short U bend pipes of thin-walled are certainly
It is used to bend the curved pipe bending mechanisms of U on dynamic forming machine, the forming elbow of the center section of the short U bend pipes of thin-walled can be completed, and
Waste of material can be effectively reduced, avoids tube wall from fold occur, ensures product quality and service life, should also have operating efficiency
Height, the characteristics of automaticity is high.
The technical solution adopted by the present invention is：A kind of pipe bending mechanism of the short U bend pipes automatic moulding machine of thin-walled, its feature exist
In：At least there is a fixed part, a semicircle mould, a movable part and No. three drive mechanisms, one end folder of fixed length tubing
To hold in fixed part, the other end is crossed activity after semicircle mould and coordinated in movable part, drives movable parts to swing by No. three drive mechanisms,
The stage casing of fixed length tubing is bent into segmental arc around semicircle mould, form the short U bend pipes of thin-walled.
Preferably, the fixed part is used to install semicircle including a bend pipe fixed seat being fixed in frame, one
The bend pipe template of mould, promote the flexible thimble cylinder of semicircle mould, one by sending pipe motor and what feed screw nut pair drove send pipe
The shift fork and shift fork cylinder that core bar, spring clip, the driving spring of a clamping fixed-length tubing press from both sides.
Preferably, the bend pipe fixed seat and bend pipe template are adjacent to arrangement, bend pipe template opens up with bend pipe fixed seat
There is relative deep-slotted chip breaker, the passage of the fixed length tubing of tubulose is formed after being adjacent to；；The sliding block of the feed screw nut pair is connected to send pipe
Core bar, this send the head of tube core bar to be formed with the plug being adapted with fixed length inner hole of pipe, and the diameter of plug, which is less than, send tube core bar
Diameter, so as in plug and one shaft shoulder being used for against fixed length tube end face of transition position formation for sending tube core bar；Send tube core bar
From the passage of rear side insertion fixed length tubing, inner conical surface is formed with front side of the passage of fixed length tubing, spring clip, institute are provided with inner conical surface
The side for stating bend pipe fixed seat offers groove, and shift fork is hinged in groove, and the head of shift fork coordinates with the spring clip, afterbody
It is connected with the push rod of the shift fork cylinder.
Preferably, the front end of the bend pipe template is in semi-cylindrical and is installed with the semicircle mould, semicircle mould offers
The half slot docked with the passage of the fixed length tubing, the rear end of semicircle mould is integrally formed with a thimble to extend back；Bend pipe
Offer through hole in template, thimble is connected and driven after passing through through hole with the thimble cylinder.
Preferably, the movable part includes a swing span, at least a bulb core bar, a bulb core bar cylinder；The pendulum
Moving frame is hinged on the semi-cylindrical position of the bending die front edge of board, vertical pendulum moving axis and described No. three drives by vertical pendulum moving axis
Motivation structure connects, and is fixed with bulb core bar cylinder and guide rail on swing span, bulb core bar by guide rail slide block pair slideably
On swing span, and the head of bulb core bar is arranged towards the passage of the fixed length tubing, the push rod of bulb core bar cylinder
Driving bulb core bar moves back and forth along guide rail.
It is fixed on swing span, is located at preferably, the movable part also includes bend pipe auxiliary mould bend pipe auxiliary mould
The head side of bulb core bar, bend pipe aid in offering at least one deep-slotted chip breaker being adapted with bulb core bar on mould.
Preferably, the bulb core bar includes bulb, bearing pin, push rod and core bar, the left end of the core bar is formed with endoporus,
Spring and push rod are provided with endoporus, the left end of bulb is hemisphere, and right-hand member is cylinder, and cylinder inserts the endoporus of core bar
And the push rod is set by hinge in endoporus, between cylinder and spring；The end for sending tube core bar is formed with
The adaptable spherical concave surface with the hemisphere of bulb.
Preferably, the cylinder upper right corner of the bulb is formed with arc section, it is provided with the middle part of cylinder and is used for what is be hinged
Looping pit.
Preferably, the hole wall of the looping pit by the circular No.1 arc section of half, No.1 straightway, four/
No. three circular arc sections of one No. two circular arc sections, No. two straightways, a quarter and No. three straightways are sequentially connected
Loop form, No.1 arc section, No. two arc sections and No. three arc section radiuses are equal.
Preferably, the left end of the core bar offers is formed with right angle for be hinged pin-and-hole, core bar on the downside of left side
Otch, one is arranged with the middle part of core bar and is used for against and buffers the elastic tape of fixed length tubing.
The beneficial effects of the invention are as follows：
The present invention forms internal and external circumference by sending the positioning clamping of tube core boom end to be positioned with materials in the tube by spring clip activity
Direction positioning clamping, ensure that materials in the tube step up uniform force, avoid radially deforming；Swung by swing span and drive bulb core bar
Realize materials in the tube bend pipe, bulb core bar including one end is hemispherical, one end is cylindrical and built-in be provided with spring provided with annular groove
Core bar, wherein realizing that short U bend pipes inner arc is molded by core bar, realize that short U bend pipes outer arc is molded by bulb, ensure short U bend pipes
Cambered surface corrugationless, materials in the tube circulation flow is big, service life length；Designed by thimble cylinder and semicircle die combination, after realizing bend pipe
The short U bend pipes of thin-walled directly eject pipe bending mechanism, be advanced in follow-up mechanism, without using additional transmission+drawing-in device
Or the interface components such as industrial robot, production equipment structure is simplified, reduces user equipment cost.
Brief description of the drawings
Fig. 1 is a kind of dimensional structure diagram of the short U bend pipes automatic moulding machine of thin-walled.
Fig. 2 is one of dimensional structure diagram of the present invention.
Fig. 3 is the two of the dimensional structure diagram of the present invention.
Fig. 4 is the main structure diagram of the present invention.
Fig. 4-1 is the dimensional structure diagram of movable part.
Fig. 5 is one of bend pipe schematic diagram of the present invention.
Fig. 6 is one of bend pipe schematic diagram of the present invention.
Fig. 7 .1 are one of the cross section structure diagram of the present invention (bulb stretching).
Fig. 7 .2 are two (bulb retractions) of the cross section structure diagram of the present invention.
Fig. 8 is the mplifying structure schematic diagram of bulb.
Fig. 9 .1 are the cross section structure diagram of core bar.
Fig. 9 .2 are Fig. 9 .1 close-up schematic view.
Figure 10 is the structural representation of working condition one of the present invention.
Figure 11 is the structural representation of working condition two of the present invention.
Figure 12 is the structural representation of working condition three of the present invention.
Figure 13 is the structural representation of looping pit.
Embodiment
The invention will be further described below, but the invention is not limited in following examples.
Fig. 1 show a kind of short U bend pipes automatic moulding machine of thin-walled with weld-ring, including：One has tube straightener for pipe A1
With clamping device A2 feeding assembly, pass through gripper mechanism grips tubing and feeding forward；One have cutter mechanism A3 and
Pipe Cutting core bar mechanism A4 Pipe Cutting assembly, Pipe Cutting core bar mechanism action is coordinated by cutter mechanism, tubing is cut into fixed length
Tubing；One has linear vibration feeder A5 and interval feed appliance A7 material transfer assembly, fixed length tubing is sent to one by one curved
Pipe mechanism；One pipe bending mechanism A9, fixed length tubing is bent into U-shaped；One circumference indexing assembly A6, the tubing for curving U-shaped is had enough to meet the need
To shaping assembly A8 and set weld-ring A10 assemblies.
As shown in Fig. 2 to Fig. 6, pipe bending mechanism provided by the invention, at least with a fixed part, a semicircle mould
A9.6, a movable part and No. three drive mechanism A9.11 (using motor).Fixed length tubing A14.1 one end is clamped in fixed part,
Activity coordinates in movable part after the other end crosses semicircle mould A9.6, drives movable part to swing by No. three drive mechanisms, makes fixed length
The stage casing of tubing is bent into segmental arc around semicircle mould, forms the short U bend pipes of thin-walled.
As shown in Fig. 2 to Fig. 4 and Fig. 5, Fig. 6, the fixed part includes a bend pipe fixed seat being fixed in frame
The flexible thimble cylinder A9.18 of A9.17, bend pipe template A9.12, a promotion semicircle mould for installing semicircle mould A9.6, one
The individual spring clip for sending tube core bar A9.19, clamping fixed-length tubing by sending that pipe motor A9.8 and feed screw nut pair drive
A9.16, driving spring folder shift fork A9.15 and shift fork cylinder A9.2.The thimble cylinder A9.18 is arranged on fixed board
On A9.26, fixed board A9.26 is fixed on frame A9.23, and guide sleeve A9.20, thimble cylinder are further fixed on fixed board
Push rod be connected with sliding bar A9.21, sliding bar A9.21 front end through after guide sleeve and fixed board A9.26 with even
Connect block A9.1 connections.Nut of the feed screw nut pair including rack-mounted screw mandrel A9.9 and screw mandrel A9.9 cooperations,
Sliding block A9.22, the guide rail A9.25 of guide shoe being connected with nut, the sliding block is with sending tube core bar A9.19 tail end to be connected.
The bend pipe fixed seat A9.17 and bend pipe template A9.12 is adjacent to arrangement, and bend pipe fixed seat is distinguished with bend pipe template
It is formed with deep-slotted chip breaker and (opening is formed with the top of the passage with intermittently sending so as to form fixed length tubing A14.1 passage A9.14 after being adjacent to
The bottom docking of glassware).The sliding block A9.22 of the feed screw nut pair is connected to send tube core bar A9.19, as shown in Figure 5, Figure 6, should
Tube core bar A9.19 head is sent to be formed with the plug A9.19.1 being adapted with fixed length inner hole of pipe, the diameter of plug, which is less than, send tube core
The diameter of bar in plug A9.19.1 with sending tube core bar A9.19 transition position to form one so as to be used for against fixed length tubing A14.1
The shaft shoulder of end face.Tube core bar is sent from the passage A9.14 of rear side insertion fixed length tubing.Fixed length tubing A14.1 drops to passage A9.14
Afterwards, send tube core bar A9.19 to be pushed away forward under the drive of feed screw nut pair, plug is inserted into fixed length tubing, promote tubing to
It is preceding to move and enter spring clip A9.16, stop when the afterbody and plug of fixed length tubing reach the retaining part of spring clip front end
Only.
Inner conical surface A9.24 is formed with front side of the passage of fixed length tubing, spring clip A9.16, the bend pipe are provided with inner conical surface
The side of fixed seat offers groove, and shift fork A9.15 is hinged in groove, and the head of shift fork coordinates with the spring clip, afterbody
It is connected with the push rod of the shift fork cylinder A9.2.Shift fork A9.15 stirs spring clip and travelled forward when shift fork cylinder A9.2 is acted, by
In the effect of inner conical surface, spring clip can tighten, so as to which fixed length tubing is clamped on the plug for sending tube core bar front end.
The front end of the bend pipe template A9.12 is in semi-cylindrical and is installed with the semicircle mould A9.6, and semicircle mould A9.6 is opened
The half slot docked provided with the passage A9.14 with the fixed length tubing A14.1, the half slot are opened from semicircle mould A9.6 side
Begin, behind semicircle mould A9.6 front side, extend to semicircle mould A9.6 opposite side, semicircle mould A9.6 rear end one into
Type has a thimble A9.10 to extend back.Offer through hole in bend pipe template A9.12, thimble A9.10 pass through after through hole with it is described
Contiguous block A9.1 connections, so as to be driven together with contiguous block A9.1 by thimble cylinder A9.18.
As shown in Fig. 2 to Fig. 4-1, the movable part includes a swing span A9.3, at least a bulb core bar A9.4, a bulb
Core bar cylinder A9.13.The swing span A9.3 is hinged on the half of the bend pipe template A9.12 front ends by vertical pendulum moving axis A9.7
Cylindrical portion (being usually the axial location at semi-cylindrical position), vertical pendulum moving axis A9.7 and No. three drive mechanisms
A9.11 connections.Bulb core bar cylinder A9.13 and guide rail A9.29 is fixed with swing span A9.3, bulb core bar A9.4 passes through cunning
Block A9.30 be arranged on that guide rail A9.29 is upper and bulb core bar A9.4 head towards the fixed length tubing passage A9.14 arrangements,
Bulb core bar cylinder A9.13 push rod is connected by link A9.28 with sliding block A9.30, so as to drive bulb core bar A9.4 edges
Guide rail A9.29 is moved back and forth.
The movable part also includes bend pipe auxiliary mould A9.27, and bend pipe auxiliary mould A9.27 is fixed on swing span A9.3
On, positioned at bulb core bar A9.4 head side, at least one and bulb core bar A9.4 phases are offered on bend pipe auxiliary mould A9.27
The deep-slotted chip breaker A9.27.1 of adaptation.During bend pipe, bulb core bar is inserted into fixed length tubing, positions the inwall of fixed length tubing, bend pipe
Deep-slotted chip breaker A9.27.1 on auxiliary mould A9.27 positions the outer wall of fixed length tubing, and auxiliary bulb core bar completes bend pipe.
As shown in Fig. 7 .1 to Figure 13, the bulb core bar includes bulb 1, bearing pin 2 and core bar 3, the left end system of the core bar
There is endoporus 35, spring 31 is provided with endoporus, the left end of bulb is hemisphere 11, and right-hand member is cylinder 12, and cylinder 12 inserts
The endoporus of core bar is simultaneously hinged in endoporus by bearing pin 2.The end for sending tube core bar A9.19 is formed with the hemisphere with bulb 1
11 adaptable spherical concave surfaces.
Further, in order to avoid there is cylinder when cylinder 12 hooks and avoided the bulb 1 rotate by spring left end
Influenceed by spring, the present invention is also provided with a columned push rod 34 between the cylinder 12 and spring 31.The push rod
It is slidably insert into endoporus 35, the diameter of push rod is more than the external diameter of spring, and the right-hand member of push rod is resisted against spring left end, push rod
Left end be resisted against the right side of cylinder so that when rotating, cylinder contacts bulb with rod diameter for face, ensures to move
Stability.
The cylinder upper right corner of the bulb is formed with arc section 14, is provided with the middle part of cylinder and is used for be hinged looping pit
13.The hole wall of the looping pit 13 is by the circular No.1 arc section C1 of half, No.1 straightway L1, a quarter circular
No. two arc section C2, No. two straightway L2, a quarter No. three circular arc section C3 and No. three straightway L3 are sequentially connected
Loop form, No.1 arc section C1, No. two arc section C2 and No. three arc section C3 radiuses are equal.
The left end of the core bar 3 offers the pin-and-hole 32 for being hinged, and right angle incision 33 is formed with the downside of core bar left side.
The outer section 33.1 of right angle incision switches to core bar bottom always at the axis of core bar left side, and the interior section 33.2 of core bar is from interior
The inwall of hole left end is cut out, and is crossed to form right angle with outer section 33.1, and the middle part of core bar 3 is arranged with one and is used for against and buffers
Fixed length tubing A14.1 elastic tape A9.4.1.After sending tube core bar to shift fixed length tubing onto spring clip position, bulb core bar is first put in
Fixed length tubing, elastic tape can compress copper pipe during this, ensure that fixed length tubing (send pipe process to have with sending the shaft shoulder of tube core bar to contact
Inertia, when sending the tube core bar to be sent to, fixed length tubing not necessarily contacts with the shaft shoulder, or fixed length tubing is slightly different in size, rubber
Circle is adapted to), shift fork stirs spring clip and locks fixed length tubing again, then bend pipe again.
As shown in Fig. 7 .1 and Figure 12, when bulb 1 axial direction and it is lateral do not stress effect when, the centre of sphere of bulb 1 and core bar
3 left end end surface is provided with distance of stretch out and draw back L (about 1.1~1.5mm), now bearing pin 2 and the circular circular arc C 2 in annular groove 14
Coordinate；
As shown in Fig. 7 .2 and Figure 10, when core bar insertion copper pipe 4 starts to carry out bend pipe along mould 5, the only axis of bulb 1
During the stress effect of direction, spring 31 is compressed axially, and with core bar 3 sliding compression distance of stretch out and draw back L occurs for bulb 1, until bearing pin 2 and ring
Circular circular arc C 1 in shape groove 14 coordinates；
As shown in figure 11, when the only lateral forces of bulb 1 act on, the radial direction of spring 31, which suffers restraints, produces amount of deflection, the profit of bulb 1
Beat occurs with core bar 3 with arc section and right angle incision, now bearing pin 2 is matched somebody with somebody with the circular circular arc C 3 in annular groove 14
Close.
The present invention operation principle be：
1) after fixed length tubing A14.1 enters pipe bending mechanism, pipe motor A9.8 and feed screw nut pair is sent to drive and send tube core bar
A9.19 front end is inserted into the mouth of pipe of fixed length tubing A14.1 rear ends, and promotes fixed length tubing to enter spring clip A9.16 forward,
The front end of fixed length tubing protrudes horizontally up spring clip；
2) bulb core bar cylinder A9.13 promotes bulb core bar A9.4 to stretch out and be inserted into the mouth of pipe of fixed length tubing front end；
3) shift fork cylinder A9.2 drives shift fork A9.15, stirs spring clip and travels forward, makes the front end of spring clip by the conical surface
A9.24 extruding and shrink, by the back end grip of fixed length tubing on the plug A9.19.1 for sending tube core bar A9.19 front ends；
4) swing span A9.3 is in No. three drive mechanism A9.11 drive lower swing 180 degree, bulb core bar A9.4 cooperation semicircles
Fixed length tubing A14.1 interlude is bent camber by mould A9.6；
5) after the circumference indexing assembly of automatic moulding machine drives fixture to move in front of the fixed length tubing bent, thimble
Cylinder A9.18 promotes thimble, and the fixed length tubing bent is pushed into fixture by semicircle mould A9.6；
6) swing span A9.3, shift fork A9.15, send tube core bar A9.19 and thimble to reset, wait bend pipe next time.
In the above-mentioned course of work, each motor and cylinder are completed under industrial computer or PLC control system.
Finally it should be noted that listed above is only specific embodiment of the invention.It is clear that the invention is not restricted to
Above example, there can also be many variations.One of ordinary skill in the art can directly lead from present disclosure
All deformations for going out or associating, are considered as protection scope of the present invention.
Claims (7)
- A kind of 1. pipe bending mechanism of the short U bend pipes automatic moulding machine of thin-walled, it is characterised in that：At least have a fixed part, one Semicircle mould（A9.6）, movable part and No. three drive mechanisms（A9.11）, fixed length tubing（A14.1）One end be clamped in it is solid Determine portion, the other end crosses semicircle mould（A9.6）Activity coordinates in movable part afterwards, passes through No. three drive mechanisms（A9.11）Drive activity Portion is swung, and the stage casing of fixed length tubing is bent into segmental arc around semicircle mould, is formed the short U bend pipes of thin-walled；The fixed part includes one The individual bend pipe fixed seat being fixed in frame（A9.17）, one be used to semicircle mould be installed（A9.6）Bend pipe template（A9.12）、 Promote the flexible thimble cylinder of semicircle mould（A9.18）, one by sending pipe motor（A9.8）And feed screw nut pair driving send pipe Core bar（A9.19）, clamping fixed-length tubing spring clip（A9.16）, driving spring folder shift fork（A9.15）And shift fork cylinder （A9.2）；The bend pipe fixed seat（A9.17）And bend pipe template（A9.12）It is adjacent to arrangement, bend pipe template（A9.12）With bend pipe Fixed seat（A9.17）Relative deep-slotted chip breaker is offered, the fixed length tubing of tubulose is formed after being adjacent to（A14.1）Passage（A9.14）； The sliding block of the feed screw nut pair（A9.22）It is connected to send tube core bar（A9.19）, this send tube core bar（A9.19）Head be formed with The plug being adapted with fixed length inner hole of pipe（A9.19.1）, plug（A9.19.1）Diameter be less than send tube core bar（A9.19）'s Diameter, so as in plug（A9.19.1）With sending tube core bar（A9.19）Transition position form one and be used for against fixed length tubing （A14.1）The shaft shoulder of end face；Tube core bar is sent from the passage of rear side insertion fixed length tubing（A9.14）, the passage of fixed length tubing （A9.14）Front side be formed with inner conical surface（A9.24）, spring clip is provided with inner conical surface（A9.16）, the side of the bend pipe fixed seat Offer groove, shift fork（A9.15）It is hinged in groove, the head of shift fork coordinates with the spring clip, afterbody and the shift fork The push rod connection of cylinder；The movable part includes a swing span（A9.3）, an at least bulb core bar（A9.4）, a bulb core bar gas Cylinder（A9.13）；The swing span（A9.3）Pass through vertical pendulum moving axis（A9.7）It is hinged on the bend pipe template（A9.12）Front end Semi-cylindrical position, vertical pendulum moving axis（A9.7）With No. three drive mechanisms（A9.11）Connection, swing span（A9.3）Upper fixation There is bulb core bar cylinder（A9.13）And guide rail（A9.29）, bulb core bar（A9.4）It is slidably mounted by guide rail slide block pair In swing span（A9.3）On, and bulb core bar（A9.4）Head towards the fixed length tubing passage（A9.14）Arrangement, bulb Core bar cylinder（A9.13）Top rod driving bulb core bar（A9.4）Along guide rail（A9.29）Move back and forth.
- A kind of 2. pipe bending mechanism of the short U bend pipes automatic moulding machine of thin-walled according to claim 1, it is characterised in that：It is described Bend pipe template（A9.12）Front end in semi-cylindrical and the semicircle mould is installed（A9.6）, semicircle mould（A9.6）Offer with The fixed length tubing（A14.1）Passage（A9.14）The half slot of docking, semicircle mould（A9.6）Rear end integrally formed with one to The thimble extended afterwards（A9.10）；Bend pipe template（A9.12）Inside offer through hole, thimble（A9.10）After through through hole with the top Pin cylinder（A9.18）Connect and driven.
- A kind of 3. pipe bending mechanism of the short U bend pipes automatic moulding machine of thin-walled according to claim 1, it is characterised in that：It is described Movable part also includes bend pipe auxiliary mould（A9.27）, bend pipe auxiliary mould（A9.27）It is fixed on swing span（A9.3）On, it is located at Bulb core bar（A9.4）Head side, bend pipe auxiliary mould（A9.27）On offer at least one and bulb core bar（A9.4）Phase The deep-slotted chip breaker of adaptation（A9.27.1）.
- A kind of 4. pipe bending mechanism of the short U bend pipes automatic moulding machine of thin-walled according to claim 1, it is characterised in that：It is described Bulb core bar includes bulb（1）, bearing pin（2）, push rod（34）And core bar（3）, the left end of the core bar is formed with endoporus（35）, endoporus In be provided with spring（31）And push rod（34）, the left end of bulb is hemisphere（11）, right-hand member is cylinder（12）, cylinder （12）Insert the endoporus of core bar and pass through bearing pin（2）It is hinged in endoporus, cylinder（12）With spring（31）Between institute is set State push rod（34）；It is described to send tube core bar（A9.19）End be formed with and bulb（1）Hemisphere（11）Adaptable spherical female Face.
- A kind of 5. pipe bending mechanism of the short U bend pipes automatic moulding machine of thin-walled according to claim 4, it is characterised in that：It is described The cylinder upper right corner of bulb is formed with arc section（14）, cylinder middle part, which is provided with, is used for be hinged looping pit（13）.
- A kind of 6. pipe bending mechanism of the short U bend pipes automatic moulding machine of thin-walled according to claim 5, it is characterised in that：It is described Looping pit（13）Hole wall by the circular No.1 arc section of half（C1）, No.1 straightway（L1）, a quarter it is circular No. two arc sections（C2）, No. two straightways（L2）, circular No. three arc sections of a quarter（C3）And No. three straightways（L3） The loop being sequentially connected is formed, No.1 arc section（C1）, No. two arc sections（C2）And No. three arc sections（C3）Radius is equal.
- A kind of 7. pipe bending mechanism of the short U bend pipes automatic moulding machine of thin-walled according to claim 4, it is characterised in that：It is described Core bar（3）Left end offer for be hinged pin-and-hole（32）, core bar is formed with right angle incision on the downside of left side（33）, core bar （3）Middle part be arranged with one and be used for against and buffer fixed length tubing（A14.1）Elastic tape（A9.4.1）.
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| CN201610778107.8A CN106270053B (en) | 2016-08-30 | 2016-08-30 | A kind of pipe bending mechanism of the short U bend pipes automatic moulding machine of thin-walled |
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| CN201610778107.8A CN106270053B (en) | 2016-08-30 | 2016-08-30 | A kind of pipe bending mechanism of the short U bend pipes automatic moulding machine of thin-walled |
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| CN106270053B true CN106270053B (en) | 2018-01-30 |
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| JPS5114864A (en) * | 1974-07-29 | 1976-02-05 | Tohoku Seiki Ind | PAIPUBENDAA |
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| CN1122266A (en) * | 1993-11-22 | 1996-05-15 | 伯尔奥克工具及量规公司 | Slaved tube length control for hairpin bender |
| CN201783588U (en) * | 2010-04-07 | 2011-04-06 | 和和机械股份有限公司 | Built-in clamping device of pipe bender |
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| CN106270053A (en) | 2017-01-04 |
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