CN112264487A

CN112264487A - Automatic pipe bending and punching production line

Info

Publication number: CN112264487A
Application number: CN202011231816.7A
Authority: CN
Inventors: 吕鸿钧; 黄泽辉; 蒋进良
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-01-26

Abstract

The invention relates to an automatic pipe bending and punching production line which comprises a machine base and a straight pipe storage frame, wherein a machining path is formed on the machine base, the machining path is sequentially provided with the straight pipe storage frame for storing a straight pipe, a pipe bending mechanism for bending the straight pipe and a punching mechanism for punching a bent pipe after bending, a track is arranged above the straight pipe storage frame, the pipe bending mechanism and the punching mechanism corresponding to the machining path, a straight pipe clamping trolley for clamping and moving the straight pipe is arranged between the straight pipe storage frame and the pipe bending mechanism corresponding to the track, and a bent pipe clamping trolley for clamping and moving the bent pipe is arranged between the pipe bending mechanism and the punching mechanism corresponding to the track. This kind of automatic return bend and punching production line's return bend mechanism and punching mechanism lateral distribution (promptly return bend station and punching station lateral distribution), adopt the body clamping dolly to remove the pipe fitting business turn over station above the station, cooperate the action of return bend mechanism and punching mechanism, realize automatic return bend and punch, improve work efficiency.

Description

Automatic pipe bending and punching production line

Technical Field

The invention relates to a pipe bending device, in particular to an automatic pipe bending and punching production line.

Background

Present return bend equipment includes the base plate, the apparatus further comprises a rotating shaft, the return bend drive arrangement, the pipe device is pressed to the activity and the fixed pipe device of pressing, the vertical setting of base plate, the pivot is horizontal to be set up, and the pivot rotates and sets up on the base plate, the return bend drive arrangement is used for driving the pipe device of pressing to revolute the rotation of axes, treat that partly of crooked body uses the pivot to fix outside the pivot under the pipe device is pressed with the pivot cooperation to the fixed, return bend drive arrangement exerts pressure to another part of body, and the pipe device is pressed to the activity is driven by return bend drive arrangement and is rotated around the pivot, it. The tube placing mode of the structure is changed into a transverse tube placing mode, so that automatic production is difficult to realize, in addition, the rotating shaft is of a cantilever beam structure and is stressed as a fulcrum for a long time, the rotating shaft is easy to bend, and a bearing between the rotating shaft and the substrate is worn due to uneven stress.

In addition, the bent pipe (bent metal pipe) is often visible in the medical field, the furniture field and the like, but the problem of automatic punching of the bent pipe (especially the double bent pipe) in the direction pointing to the inner side of the bent pipe is not well solved at present, the operation of the automatic punching machine is mainly to manually place the double bent pipe on a tool for punching, and the efficiency is low, and the potential safety hazard risk is high. Therefore, the development of the automatic pipe bending and punching production line is further restricted.

Disclosure of Invention

The invention aims to provide an automatic pipe bending and punching production line, wherein pipe bending and punching stations are transversely distributed, and a pipe fitting is moved to enter and exit from the station by a pipe body clamping trolley above the station.

The purpose of the invention is realized as follows:

the utility model provides an automatic return bend and production line that punches, includes frame and straight tube storage rack, its characterized in that: the straight pipe bending machine is characterized in that a machining path is formed on the machine base, a straight pipe storage rack used for storing a straight pipe, a pipe bending mechanism used for bending the straight pipe and a punching mechanism used for punching a bent pipe after bending are sequentially arranged on the machining path, a track is arranged above the straight pipe storage rack, the pipe bending mechanism and the punching mechanism corresponding to the machining path, a straight pipe clamping trolley used for clamping and moving the straight pipe is arranged on the track corresponding to the position between the straight pipe storage rack and the pipe bending mechanism, and a bent pipe clamping trolley used for clamping and moving the bent pipe is arranged on the track corresponding to the position between the pipe bending mechanism and.

The aim of the invention can also be solved by the following technical measures:

as a more specific scheme, a straight pipe feeding mechanism for feeding the straight pipes into the straight pipe storage rack is arranged on one side, back to the base, of the straight pipe storage rack, so that feeding automation is realized.

As a further scheme, a frame is arranged on the machine base corresponding to the straight pipe storage rack, the pipe bending mechanism, the punching mechanism, the straight pipe clamping trolley and the pipe bending clamping trolley, and a door body is arranged outside the frame. The door body covers the production line, so that noise can be reduced, mistaken touch can be avoided, and beautifying and upgrading of the production environment are realized.

As a further scheme, the pipe bending mechanism is a double-pipe bending mechanism for bending a straight pipe into a double-bent pipe, the punching mechanism comprises a first punching device and a second punching device, the first punching device and the second punching device are sequentially arranged in the direction of the pipe bending mechanism back to the punching mechanism, and the first punching device and the second punching device are distributed in a left-right manner so as to respectively punch bent pipes at two ends of the double-bent pipe; the elbow clamping trolley is provided with two trolleys. The punching of each pin of the double-bent pipe is realized by a set of punching device respectively.

As a further scheme, the pipe bending mechanism comprises a work table plate, a left rotating shaft, a left pipe bending driving device, a left pipe pressing device, a right rotating shaft, a right pipe bending driving device, a right pipe pressing device and an intermediate pipe pressing device, wherein the left rotating shaft and the right rotating shaft are distributed left and right and are respectively and rotatably arranged on the work table plate; the right elbow driving device is used for driving the right rotating shaft to rotate, the right elbow device comprises a right elbow cylinder, a right rotating arm and a right pressing block, the right rotating arm is in transmission connection with the right rotating shaft, the right elbow cylinder is arranged on the right rotating arm and is in transmission connection with the right pressing block, and the right pressing block is positioned outside the right side of the right cushion cover; the middle pressure pipe device comprises a middle pressure pipe cylinder and a middle pressure block, the middle pressure pipe cylinder is fixedly arranged on the working table plate and is in transmission connection with the middle pressure block, the middle pressure block faces towards the left cushion cover and the right cushion cover, and a yielding area is further formed among the middle pressure block, the left cushion cover and the right cushion cover. The yielding area is used for enabling the chuck of the straight pipe or bent pipe clamping trolley to extend into the straight pipe or bent pipe clamping trolley to load and unload workpieces.

As a further scheme, the first drilling device comprises a first bearing plate, a first fixed die, a first movable die, a first die assembly oil cylinder, a first core inserting cylinder, a first core rod, a first drilling mechanism, a base and a pushing cylinder, wherein the first fixed die is fixedly arranged on the first bearing plate, the first movable die is arranged on the first bearing plate in a sliding manner, and the first die assembly oil cylinder is connected between the first bearing plate and the first movable die so as to control the first movable die and the first fixed die to move in a relative opening and closing manner; a first clamping cavity is formed between the first fixed die and the first movable die, the first core rod is in transmission connection with the first core inserting cylinder, the first core inserting cylinder controls the first core rod to be inserted into the first clamping cavity, the first fixed die and/or the first movable die are/is provided with the first punching mechanism, and the first fixed die and/or the first movable die are/is provided with a first pin hole communicated with the first clamping cavity corresponding to the first punching mechanism; first carrier plate slides and sets up on the base, is equipped with the propelling movement cylinder between base and the first carrier plate, and the first carrier plate of propelling movement cylinder control slides on the base.

As a further scheme, the second punching device comprises a second bearing plate, a second fixed die, a second movable die, a second die assembly oil cylinder, a second core inserting cylinder, a second core rod, a second punching device, a pressure head, a pushing cylinder, a front extension platform and a rear extension platform, the second fixed die is fixedly arranged on the second bearing plate, the second movable die is arranged on the second bearing plate in a sliding manner, and the second die assembly oil cylinder is connected between the second bearing plate and the second movable die so as to control the second movable die and the second fixed die to move in an opening and closing manner; a second clamping cavity is formed between the second fixed die and the second movable die, the second core rod is in transmission connection with the second core inserting cylinder, the second core inserting cylinder controls the second core rod to be inserted into the second clamping cavity, the second fixed die and/or the second movable die are/is provided with the second punching device, and the second fixed die and/or the second movable die are/is provided with a second pin hole communicated with the second clamping cavity corresponding to the second punching device; preceding extension platform and the back both ends that extend the platform distribution and set up around the second carrier plate, the second presss from both sides directional around the chamber, bulldozes the cylinder setting in the front and extend the platform and be connected with the pressure head transmission, and the pressure head is located the second and presss from both sides the front end in chamber outside, the second lock pin cylinder sets up on the back extension platform.

The first punching device and the second punching device are provided with inserting cores to act, the core rod is also provided with hole positions corresponding to the pin holes, the core rod is inserted into the pin, and then the pin is punched, so that the pin is prevented from being flattened.

As a further scheme, the straight pipe clamping trolley comprises a first sliding plate, a first driving motor, a first lifting driving cylinder, a first lifting plate and a left and right pipe clamping mechanisms, wherein the first sliding plate is arranged on a track in a sliding manner, the first driving motor is arranged on the first sliding plate and is in transmission connection with a driving gear, a straight rack is arranged beside the track and is arranged in parallel relative to the track, and the driving gear is meshed with the straight rack; the first lifting driving cylinder is arranged on the first sliding plate and is in transmission connection with the first lifting plate, the first lifting plate is arranged below the first sliding plate, and the left and right two sets of pipe clamping mechanisms are respectively distributed on the first lifting plate in a left-right mode.

As a further scheme, the bent pipe clamping trolley comprises a second sliding plate, a second driving motor, a second lifting driving cylinder, a second lifting plate, a set of pipe clamping mechanism and a left bent pipe side supporting device and a right bent pipe side supporting device, wherein the second sliding plate is arranged on the track in a sliding mode, the second driving motor is arranged on the second sliding plate and is in transmission connection with a second driving gear, and the second driving gear is meshed with the straight rack; the second lifting driving cylinder is arranged on the second sliding plate and is in transmission connection with the second lifting plate, the second lifting plate is arranged below the second sliding plate, the pipe clamping mechanism is located in the middle of the second lifting plate, the left and right sets of bent pipe side supporting devices are respectively arranged on the second lifting plate in a left-right distribution mode, and the pipe clamping mechanism and the bent pipe side supporting devices are staggered front and back. The pipe sleeving and clamping mechanism is used for clamping the middle parts of the double bent pipes, and the left and right bent pipe side supporting devices are used for supporting the outer sides of the left and right pins of the double bent pipes, so that the double bent pipes are kept in a horizontal state.

As a further scheme, the straight tube storage rack includes the pipe support, throw the material arm and separate the jaw subassembly, be equipped with the U type groove that is used for vertical direction to put the straight tube on the pipe support, the front end left and right sides of pipe support is equipped with the axle bed, it is equipped with the material arm of throwing to rotate on the axle bed, be equipped with the spacing arch that exceeds the material arm upper surface of throwing on the axle bed, it is two sets of about separating the jaw subassembly to be equipped with, the one end and the linkage push pedal of jaw subassembly are connected to every group separation, the other end of separating the jaw subassembly stretches to in the pipe support in the vertical face in place in U type groove, the setting is slide.

As a further scheme, the separation fork head assembly comprises more than one separation fork head, when the separation fork heads are more than two, the separation fork heads are distributed from top to bottom, and the separation fork heads are sequentially staggered from top to bottom.

The invention has the following beneficial effects:

(1) this kind of automatic return bend and punching production line's return bend mechanism and punching mechanism lateral distribution (promptly return bend station and punching station lateral distribution), adopt the body clamping dolly to remove the pipe fitting business turn over station above the station, cooperate the action of return bend mechanism and punching mechanism, realize automatic return bend and punch, improve work efficiency.

(2) The pipe bending mechanism of the automatic pipe bending and punching production line is a double-pipe bending mechanism, and two sets of punching mechanisms are arranged and respectively punch two pins of the double-pipe bending; moreover, the two sets of punching mechanisms are distributed left and right and staggered front and back without blocking each other.

(3) This kind of automatic return bend and production line that punches adopt from top to bottom blowing and get the material to the many straight tubes that distribute about combining the separation jaw subassembly of straight tube storage rack can separate suitable distance, consequently, can carry out the pipe bending to many straight tubes simultaneously, further provides work efficiency.

(4) The automatic return bend of this kind and the return bend clamping dolly of production line that punches can make many return bends keep same angle to put into the mechanism of punching in order simultaneously and carry out unified punching.

Drawings

Fig. 1 is a schematic structural diagram according to an embodiment of the present invention.

Fig. 2 is a schematic view of another perspective structure of fig. 1.

Fig. 3 is a schematic top view of the structure of fig. 1.

FIG. 4 is a schematic structural view of the straight pipe clamping trolley and the bent pipe clamping trolley taken away.

FIG. 5 is a schematic structural diagram of the present invention after installing the frame, the straight tube storage rack, the straight tube feeding mechanism and the base.

Fig. 6 is a schematic structural view of the frame of fig. 5 after the door body is mounted thereon.

FIG. 7 is a schematic view of a combined structure of the pipe bending mechanism, the straight pipe clamping trolley, the pipe bending clamping trolley and the straight pipe storage rack in the invention.

Fig. 8 is another perspective view of fig. 7.

Fig. 9 is a schematic top view of the pipe bending mechanism according to the present invention.

Fig. 10 is a schematic sectional structure view of C-C of fig. 9.

Fig. 11 is a schematic perspective view of the pipe bending mechanism according to the present invention.

Fig. 12 is a schematic view of another angle solid (with double elbow) structure of the elbow mechanism of the present invention.

FIG. 13 is a schematic view of an angle structure of the straight pipe clamping trolley of the invention.

FIG. 14 is another angle structure diagram of the straight pipe clamping trolley of the invention.

FIG. 15 is a schematic view of a straight tube rack according to the present invention.

Fig. 16 is another perspective view of fig. 15.

Fig. 17 is a schematic view of an angle structure of the first punching device according to the present invention.

Fig. 18 is a schematic view of another angle structure of the first drilling device of the present invention.

FIG. 19 is a schematic view of an angle structure of the second punching device of the present invention.

FIG. 20 is a schematic view of another angle structure of the second punching device of the present invention.

Detailed Description

The invention is further described with reference to the following figures and examples:

referring to fig. 1 to 20, an automatic pipe bending and punching production line includes a machine base 80 and a straight pipe storage rack 1, and is characterized in that: the machine base 80 is provided with a processing path, the processing path is sequentially provided with a straight pipe storage rack 1 for storing a straight pipe, a pipe bending mechanism 10 for bending the straight pipe and a punching mechanism for punching a bent pipe after bending, the processing path is provided with a track 20 corresponding to the straight pipe storage rack 1, the pipe bending mechanism 10 and the punching mechanism, a straight pipe clamping trolley 2 for clamping and moving the straight pipe is arranged on the track 20 corresponding to the position between the straight pipe storage rack 1 and the pipe bending mechanism 10, and a bent pipe clamping trolley 3 for clamping and moving the bent pipe is arranged on the track 20 corresponding to the position between the pipe bending mechanism 10 and the punching mechanism.

A straight pipe feeding mechanism 70 for feeding the straight pipes into the straight pipe storage rack 1 is arranged on one side of the straight pipe storage rack 1, which is back to the base 80.

A frame 110 is arranged on the machine seat 80 corresponding to the straight pipe storage rack 1, the pipe bending mechanism 10, the punching mechanism, the straight pipe clamping trolley 2 and the pipe bending clamping trolley 3, and a door body 100 is arranged outside the frame 110.

The pipe bending mechanism 10 is a double-pipe bending mechanism for bending a straight pipe into a double-bent pipe, the punching mechanism comprises a first punching device 50 and a second punching device 60, the first punching device 50 and the second punching device 60 are sequentially arranged in the direction of the pipe bending mechanism 10 back to the punching mechanism, and the first punching device 50 and the second punching device 60 are distributed in a left-right manner so as to punch bent pipes at two ends of the double-bent pipe respectively; the bent pipe clamping trolley 3 is provided with two.

The pipe bending mechanism 10 comprises a work table plate 9, a left rotating shaft 92, a left pipe bending driving device, a left pipe pressing device, a right rotating shaft 94, a right pipe bending driving device, a right pipe pressing device and an intermediate pipe pressing device, the left rotating shaft 92 and the right rotating shaft 94 are distributed left and right and are respectively arranged on the work table plate 9 in a rotating mode, a left cushion cover 93 and a right cushion cover 95 are respectively sleeved outside the left rotating shaft 92 and the right rotating shaft 94 in a sleeved mode, the left pipe bending driving device is used for driving the left rotating shaft 92 to rotate, the left pipe pressing device comprises a left pipe pressing cylinder 7, a left rotating arm 71 and a left pressing block 75, the left rotating arm 71 is in transmission connection with the left rotating shaft 92, the left pipe pressing cylinder 7 is arranged on the left rotating arm 71 and is in transmission connection with the left pressing block 75, and the left; the right elbow driving device is used for driving the right rotating shaft 94 to rotate, the right elbow device comprises a right elbow cylinder 8, a right rotating arm 81 and a right pressing block 85, the right rotating arm 81 is in transmission connection with the right rotating shaft 94, the right elbow cylinder 8 is arranged on the right rotating arm 81 and is in transmission connection with the right pressing block 85, and the right pressing block 85 is positioned outside the right side of the right cushion cover 95; the middle pressure pipe device comprises a middle pressure pipe cylinder 4 and a middle pressing block 41, the middle pressure pipe cylinder 4 is fixedly arranged on the working table plate 9 and is in transmission connection with the middle pressing block 41, the middle pressing block 41 faces between the left cushion cover 93 and the right cushion cover 95, and a yielding area 101 is formed among the middle pressing block 41, the left cushion cover 93 and the right cushion cover 95.

The workbench plate 9 is provided with a vertical support plate 96, the upper end of the vertical support plate 96 is provided with a top support plate 91, and the top support plate 91 is respectively in running fit with the left rotating shaft 92 and the right rotating shaft 94.

The left elbow driving device comprises a left elbow driving cylinder 5, a left driving rack 51 and a left driving gear 921, the left driving gear 921 is positioned below the working platen 9 and is fixedly connected with the lower end of the left rotating shaft 92, and the left driving rack 51 is in transmission connection with the left elbow driving cylinder 5 and is meshed with the left driving gear 921; the right elbow driving device comprises a right elbow driving cylinder 6, a right driving rack 61 and a right driving gear 941, wherein the right driving gear 941 is positioned below the working table plate 9 and is fixedly connected with the lower end of the right rotating shaft 94, and the right driving rack 61 is in transmission connection with the right elbow driving cylinder 6 and is meshed with the right driving gear 941.

The left pipe pressing device further comprises a left supporting seat 72, a left sliding block 73 and a left sliding rail 74, the left supporting seat 72 is in transmission connection with a piston rod of the left pipe pressing cylinder 7, the left sliding block 73 is transversely arranged on the left supporting seat 72, the left sliding rail 74 is arranged on the outer side of the left pressing block 75 and is in sliding fit with the left sliding block 73, and a cylinder body of the left pipe pressing cylinder 7 is fixedly connected with the left rotating arm 71; the right pressure pipe device further comprises a right supporting seat 82, a right sliding block 83 and a right sliding rail 84, the right supporting seat 82 is in transmission connection with a piston rod of the right pressure pipe cylinder 8, the right sliding block 83 is transversely arranged on the right supporting seat 82, the left sliding rail 74 is arranged on the outer side of the right pressing block 85 and in sliding fit with the right sliding block 83, and a cylinder body of the right pressure pipe cylinder 8 is fixedly connected with the right rotating arm 81.

A left wear pad 76 is arranged between the left rotating arm 71 and the workbench plate 9, and a right wear pad 86 is arranged between the right rotating arm 81 and the workbench plate 9.

The surfaces of the left cushion cover 93, the left pressing block 75, the right cushion cover 95, the right pressing block 85 and the middle pressing block 41 are all provided with more than two positioning pit grooves, and the positioning pit grooves are distributed up and down.

A lower supporting plate 97 is further arranged below the working table plate 9, a bottom supporting plate 98 is arranged at the bottom of the lower supporting plate 97, and the bottom supporting plate 98 is in rotating fit with the lower ends of the left rotating shaft 92 and the right rotating shaft 94.

The first drilling device 50 comprises a first carrier plate 504, a first fixed die 505, a first movable die 506, a first die closing oil cylinder 5061, a first core inserting air cylinder 509, a first core bar 5071, a first drilling mechanism, a base 502 and a pushing air cylinder 501, wherein the first fixed die 505 is fixedly arranged on the first carrier plate 504, the first movable die 506 is arranged on the first carrier plate 504 in a sliding mode, and the first die closing oil cylinder 5061 is connected between the first carrier plate 504 and the first movable die 506 so as to control the first movable die 506 and the first fixed die 505 to move in a relative opening and closing mode; a first clamping cavity is formed between the first fixed die 505 and the first movable die 506, the first mandrel 5071 is in transmission connection with the first mandrel cylinder 509, the first mandrel cylinder 509 controls the first mandrel 5071 to be inserted into the first clamping cavity, the first fixed die 505 is provided with the first punching mechanism, and the first fixed die 505 is provided with a first pin hole communicated with the first clamping cavity corresponding to the first punching mechanism; the first bearing plate 504 is slidably disposed on the base 502, a pushing cylinder 501 is disposed between the base 502 and the first bearing plate 504, and the pushing cylinder 501 controls the first bearing plate 504 to slide on the base 502.

The outer end of the piston rod of the first inserting core cylinder is provided with a first base 507, and the first core bar 5071 is connected with the first base 507.

The first punching mechanism comprises a first punching oil cylinder 5051, a first pushing plate 5052 and a first punching bolt, the first punching oil cylinder 5051 is arranged on the fixed die, the first pushing plate 5052 is in transmission connection with the first punching oil cylinder, and the first punching bolt is connected with the first pushing plate 5052 and points to the pin hole.

The second punching device 60 comprises a second bearing plate 608, a second fixed die 6016, a second movable die 606, a second die closing cylinder 607, a second core inserting cylinder 601, a second core rod, a second punching device 60, a pressure head 6013, a pushing cylinder 6011, a front extension platform 6010 and a rear extension platform 603, the second fixed die 6016 is fixedly arranged on the second bearing plate 608, the second movable die 606 is slidably arranged on the second bearing plate 608, and the second die closing cylinder 607 is connected between the second bearing plate 608 and the second movable die 606 to control the relative opening and closing movement of the second movable die 606 and the second fixed die 6016; a second clamping cavity is formed between the second fixed die 6016 and the second movable die 606, the second core rod is in transmission connection with the second core inserting cylinder 601, the second core inserting cylinder 601 controls the second core rod to be inserted into the second clamping cavity, the second fixed die 6016 and the second movable die 606 are provided with the second punching device 60, and the second fixed die 6016 and the second movable die 606 are provided with second pin holes communicated with the second clamping cavity corresponding to the second punching device 60; the front extension platform 6010 and the rear extension platform 603 are distributed at the front end and the rear end of the second carrier plate 608, the second clamping cavity points forward and backward, the pushing cylinder 6011 is arranged on the front extension platform 6010 and is in transmission connection with the pressure head 6013, the pressure head 6013 is located outside the front end of the second clamping cavity, and the second ferrule cylinder 601 is arranged on the rear extension platform 603.

The outer end of the piston rod of the second mortise cylinder 601 is provided with a second base 6017, and the second core rod is connected with the second base 6017.

And a third arc pit is arranged on the surface of the pressure head 6013 at a position corresponding to the height of the second clamping cavity.

The second punching mechanism comprises second punching

oil cylinders

6062 and 6019, a second

top pushing plate

6061, 6018 and a second punching bolt 6063, the movable die and the fixed die are respectively provided with the second

punching oil cylinders

6062 and 6019, the top pushing plate is in transmission connection with the punching oil cylinders, and the punching bolt is connected with the top pushing plate and points to the pin hole.

The straight pipe clamping trolley 2 comprises a first sliding plate 23, a first driving motor 27, a first lifting driving cylinder 21, a first lifting plate 24 and a left pipe clamping mechanism and a right pipe clamping mechanism, wherein the first sliding plate 23 is arranged on a track 20 in a sliding mode, the first driving motor 27 is arranged on the first sliding plate 23, the first driving motor 27 is in transmission connection with a driving gear 28, a straight rack is arranged beside the track 20 and is arranged in parallel relative to the track 20, and the driving gear 28 is meshed with the straight rack; the first lifting driving cylinder 21 is arranged on the first sliding plate 23 and is in transmission connection with the first lifting plate 24, the first lifting plate 24 is arranged below the first sliding plate 23, and the left and right sets of pipe clamping mechanisms are respectively distributed on the first lifting plate 24 in the left and right directions. The pipe clamping mechanism of the straight pipe clamping trolley 2 comprises a first finger clamp cylinder 25 and a first pipe clamp 26, the first finger clamp cylinder 25 is arranged at the bottom of the first lifting plate 24, and the first pipe clamp 26 is arranged at the lower end of the first finger clamp cylinder 25 and is in transmission connection with the first finger clamp cylinder 25. The first lifting plate 24 is provided with a first longitudinal guide rod 22, and the first longitudinal guide rod 22 is in up-and-down sliding fit with the first sliding plate 23.

The bent pipe clamping trolley 3 comprises a second sliding plate 33, a second driving motor, a second lifting driving cylinder 31, a second lifting plate 34, a set of pipe clamping mechanism and a left bent pipe side supporting device and a right bent pipe side supporting device 37, wherein the second sliding plate 33 is arranged on the track 20 in a sliding mode, the second driving motor is arranged on the second sliding plate 33 and is in transmission connection with a second driving gear 28, and the second driving gear 28 is meshed with a straight rack; the second lifting driving cylinder 31 is arranged on the second sliding plate 33 and is in transmission connection with the second lifting plate 34, the second lifting plate 34 is arranged below the second sliding plate 33, the pipe clamping mechanism is located in the middle of the second lifting plate 34, the left and right sets of bent pipe side supporting devices 37 are respectively arranged on the second lifting plate 34 in a left-right distribution mode, and the pipe clamping mechanism and the bent pipe side supporting devices are staggered front and back. The pipe clamping mechanism of the elbow clamping trolley 3 comprises a second finger clamp cylinder 35 and a second pipe clamp 36, the second finger clamp cylinder 35 is arranged at the bottom of the second lifting plate 34, and the second pipe clamp 36 is arranged at the lower end of the second finger clamp cylinder 35 and is in transmission connection with the second finger clamp cylinder 35. The second lifting plate 34 is provided with a second longitudinal guide rod 32, and the second longitudinal guide rod 32 is in up-down sliding fit with the second sliding plate 33. The bent pipe side supporting device 37 comprises a pipe supporting driving cylinder 371 and a pipe supporting block 372 which are arranged laterally, the pipe supporting block 372 is in transmission connection with the pipe supporting driving cylinder 371, and an arc-shaped pit groove is formed in the outer side, corresponding to the pipe body, of the surface of the pipe supporting block 372 to position the pipe body.

Straight tube storage rack 1 includes pipe support 11, throw the material arm 17 and separate the jaw subassembly, be equipped with the U type groove 12 that is used for vertical direction to put the straight tube on the pipe support 11, the front end left and right sides of pipe support 11 is equipped with axle bed 14, it is equipped with the material arm 17 of throwing to rotate on the axle bed 14, be equipped with the spacing arch 141 that exceeds the material arm 17 upper surface of throwing on the axle bed 14, it is two sets of about being equipped with to separate the jaw subassembly, the one end and the linkage push pedal 16 of jaw subassembly are separated to every group are connected, the other end of separating the jaw subassembly stretches to in the vertical face in the place of U type groove 12 in the pipe support 11, the setting that slides. The feeding arms 17 are arranged on the left and the right, the left and the right feeding arms 17 are connected through a connecting rod 171, a synchronizing shaft 15 is connected between the left and the right shaft seats 14, and the feeding arms 17 are arranged on the synchronizing shaft 15. The pipe frame 11 is provided with a front-back directional transverse guide rod 18, the linkage push plate 16 is arranged on the transverse guide rod 18 in a sliding mode, and the linkage push plate 16 can be driven by an air cylinder. The synchronizing shaft 15 may be driven by a cylinder or a motor.

The separation fork head assembly comprises more than one separation fork head 13, when the separation fork head 13 is provided with more than two, the separation fork heads 13 are distributed from top to bottom, and each separation fork head 13 is staggered from top to bottom in sequence.

The straight pipe feeding mechanism 70 comprises a rack 704, a hopper 701 is arranged on the rack 704, the bottom of the hopper 701 inclines towards the straight pipe storage rack 1, a conveying belt 702 is arranged at one end, close to the straight pipe storage rack 1, of the hopper 701, the conveying belt 702 conveys the straight pipes of the hopper 701 upwards, a guide inclined pipe (not shown in the figure) is arranged between the upper end of the conveying belt 702 and the feeding arm 17, the conveying belt 702 conveys the straight pipes 30 out to the guide inclined pipe, the straight pipes 30 fall onto the feeding arm 17 and are blocked by the limiting protrusions 141, as shown in a position in fig. 8, the number of the straight pipes stored on the feeding arm 17 is equal to the number of the bendable pipes of the pipe bending mechanism 10, and the feeding arm 17 is controlled to swing upwards, so that the limiting protrusions 141 can be lifted by the corresponding number of the straight pipes, and the straight pipes can fall into the U. The separating fork head assembly moves towards the direction of the U-shaped groove 12, and then the straight pipe in the U-shaped groove 12 can be separated.

The working principle is as follows: the straight pipe clamping trolley 2 moves four straight pipes on the straight pipe storage rack 1 to a position between the middle pressing block 41 and the left and right rotating shafts of the pipe bending mechanism 10, the middle pressing block 41 presses the straight pipes to the rotating shafts, meanwhile, the first pipe clamp 26 of the straight pipe clamping trolley 2 is opened and leaves the yielding area, the pipe bending mechanism starts to work to bend the pipes, and the straight pipes are processed into double bent pipes 40. Then, the pushing cylinder 501 of the first drilling device 50 pushes the first carrier plate 504 and the die thereon out of the pins on one side of the double bent pipe on the pipe bending mechanism 10, and the first core inserting cylinder 509 inserts the first core bar 5071 into the pins on the side, followed by the mold closing and drilling operation. Finally, the mold opening and the core rod withdrawing are carried out, the first elbow clamping trolley 3 clamps and moves the double-elbow pipe 40, one side of which is punched, to the second punching device 60, the middle of the double-elbow pipe is placed in the second punching device 60, the pin to be punched falls into the second clamping cavity, the second core rod is inserted into the pin, the middle of the double-elbow pipe is pressed by the pressing head 6013, the mold closing and punching are carried out, and the punching of the other pin is completed. And finally, moving the finally punched double bent pipes out of the machine base through a second bent pipe clamping trolley. The rear end of the machine base can be provided with an inclined pipe, the second elbow clamping trolley places the double elbows on the inclined pipe, and the double elbows can slide to a designated position along the inclined pipe. In addition, when the second punching device 60 works, the pipe bending processing of the pipe bending mechanism is not influenced, so that the working efficiency is improved.

Claims

1. The utility model provides an automatic return bend and production line that punches, includes frame (80) and straight tube storage rack (1), its characterized in that: the straight pipe bending machine is characterized in that a machining path is formed on the machine base (80), a straight pipe storage rack (1) used for storing a straight pipe is sequentially arranged on the machining path, a pipe bending mechanism (10) used for bending the straight pipe and a punching mechanism used for punching the bent pipe after bending are arranged, the machining path corresponds to the straight pipe storage rack (1), a track (20) is arranged above the pipe bending mechanism (10) and the punching mechanism, a straight pipe clamping trolley (2) used for clamping and moving the straight pipe is arranged between the straight pipe storage rack (1) and the pipe bending mechanism (10) on the track (20), and a bent pipe clamping trolley (3) used for clamping and moving the bent pipe is arranged between the pipe bending mechanism (10) and the punching mechanism on the track (20).

2. The automatic pipe bending and punching production line of claim 1, wherein: and a straight pipe feeding mechanism (70) for feeding the straight pipes into the straight pipe storage rack (1) is arranged on one side of the straight pipe storage rack (1) back to the base (80).

3. The automatic pipe bending and punching production line of claim 1, wherein: a frame (110) is arranged on the machine base (80) corresponding to the straight pipe storage rack (1), the pipe bending mechanism (10), the punching mechanism, the straight pipe clamping trolley (2) and the pipe bending clamping trolley (3), and a door body (100) is arranged outside the frame (110).

4. The automatic pipe bending and punching production line of claim 1, wherein: the pipe bending mechanism (10) is a double-pipe bending mechanism for bending a straight pipe into a double-bent pipe, the punching mechanism comprises a first punching device (50) and a second punching device (60), the first punching device (50) and the second punching device (60) are sequentially arranged in the direction of the pipe bending mechanism (10) back to the punching mechanism, and the first punching device (50) and the second punching device (60) are distributed in a left-right mode so as to punch bent pipes at two ends of the double-bent pipe respectively; the bent pipe clamping trolley (3) is provided with two trolleys.

5. The automatic pipe bending and punching production line of claim 4, wherein: the pipe bending mechanism (10) comprises a workbench plate (9), a left rotating shaft (92), a left pipe bending driving device, a left pipe pressing device, a right rotating shaft (94), a right pipe bending driving device, a right pipe pressing device and a middle pipe pressing device, the left rotating shaft (92) and the right rotating shaft (94) are distributed left and right and are respectively rotatably arranged on the working table plate (9), a left cushion cover (93) and a right cushion cover (95) are respectively sleeved outside the left rotating shaft (92) and the right rotating shaft (94), the left elbow driving device is used for driving the left rotating shaft (92) to rotate, the left pipe pressing device comprises a left pipe pressing cylinder (7), a left rotating arm (71) and a left pressing block (75), the left rotating arm (71) is in transmission connection with the left rotating shaft (92), the left pipe pressing cylinder (7) is arranged on the left rotating arm (71) and is in transmission connection with the left pressing block (75), and the left pressing block (75) is positioned outside the left side of the left cushion cover (93); the right elbow driving device is used for driving the right rotating shaft (94) to rotate, the right elbow device comprises a right elbow cylinder (8), a right rotating arm (81) and a right pressing block (85), the right rotating arm (81) is in transmission connection with the right rotating shaft (94), the right elbow cylinder (8) is arranged on the right rotating arm (81) and is in transmission connection with the right pressing block (85), and the right pressing block (85) is positioned outside the right side of the right cushion cover (95); the middle pressure pipe device comprises a middle pressure pipe cylinder (4) and a middle pressing block (41), the middle pressure pipe cylinder (4) is fixedly arranged on the working table plate (9) and is in transmission connection with the middle pressing block (41), the middle pressing block (41) faces to the position between the left cushion cover (93) and the right cushion cover (95), and a yielding area (101) is formed among the middle pressing block (41), the left cushion cover (93) and the right cushion cover (95).

6. The automatic pipe bending and punching production line of claim 4, wherein: the first punching device (50) comprises a first bearing plate (504), a first fixed die (505), a first movable die (506), a first die closing oil cylinder (5061), a first core inserting cylinder (509), a first core rod (5071), a first punching mechanism, a base (502) and a pushing air cylinder (501), wherein the first fixed die (505) is fixedly arranged on the first bearing plate (504), the first movable die (506) is arranged on the first bearing plate (504) in a sliding mode, and the first die closing oil cylinder (5061) is connected between the first bearing plate (504) and the first movable die (506) so as to control the relative opening and closing movement of the first movable die (506) and the first fixed die (505); a first clamping cavity is formed between the first fixed die (505) and the first movable die (506), the first core rod (5071) is in transmission connection with the first core inserting cylinder (509), the first core inserting cylinder (509) controls the first core rod (5071) to be inserted into the first clamping cavity, the first fixed die (505) and/or the first movable die (506) are/is provided with the first punching mechanism, and the first fixed die (505) and/or the first movable die (506) are/is provided with a first pin hole communicated with the first clamping cavity corresponding to the first punching mechanism; the first bearing plate (504) is arranged on the base (502) in a sliding mode, a pushing cylinder (501) is arranged between the base (502) and the first bearing plate (504), and the pushing cylinder (501) controls the first bearing plate (504) to slide on the base (502);

the second punching device (60) comprises a second bearing plate (608), a second fixed die (6016), a second movable die (606), a second die closing oil cylinder (607), a second core inserting cylinder (601), a second core rod, a second punching device (60), a pressure head (6013), a pushing cylinder (6011), a front extension platform (6010) and a rear extension platform (603), the second fixed die (6016) is fixedly arranged on the second bearing plate (608), the second movable die (606) is arranged on the second bearing plate (608) in a sliding mode, and the second die closing oil cylinder (607) is connected between the second bearing plate (608) and the second movable die (606) so as to control the second movable die (606) and the second fixed die (6016) to move in an opening and closing mode relatively; a second clamping cavity is formed between the second fixed die (6016) and the second movable die (606), the second core rod is in transmission connection with the second core inserting cylinder (601), the second core inserting cylinder (601) controls the second core rod to be inserted into the second clamping cavity, the second fixed die (6016) and/or the second movable die (606) are/is provided with the second punching device (60), and the second fixed die (6016) and/or the second movable die (606) are/is provided with a second pin hole communicated with the second clamping cavity corresponding to the second punching device (60); the front extension platform (6010) and the rear extension platform (603) are distributed at the front end and the rear end of a second bearing plate (608), the second clamping cavity points forwards and backwards, a pushing cylinder (6011) is arranged on the front extension platform (6010) and is in transmission connection with a pressure head (6013), the pressure head (6013) is located outside the front end of the second clamping cavity, and the second ferrule cylinder (601) is arranged on the rear extension platform (603).

7. The automatic pipe bending and punching production line of claim 1, wherein: the straight pipe clamping trolley (2) comprises a first sliding plate (23), a first driving motor (27), a first lifting driving cylinder (21), a first lifting plate (24) and a left pipe clamping mechanism and a right pipe clamping mechanism, wherein the first sliding plate (23) is arranged on a rail (20) in a sliding mode, the first driving motor (27) is arranged on the first sliding plate (23), the first driving motor (27) is in transmission connection with a driving gear (28), a straight rack is arranged beside the rail (20), the straight rack and the rail (20) are arranged in parallel relatively, and the driving gear (28) is meshed with the straight rack; the first lifting driving cylinder (21) is arranged on the first sliding plate (23) and is in transmission connection with the first lifting plate (24), the first lifting plate (24) is arranged below the first sliding plate (23), and the left and right two sets of pipe clamping mechanisms are respectively distributed on the first lifting plate (24) in the left and right directions.

8. The automatic pipe bending and punching production line of claim 1, wherein: the bent pipe clamping trolley (3) comprises a second sliding plate (33), a second driving motor, a second lifting driving cylinder (31), a second lifting plate (34), a set of pipe clamping mechanism and a left bent pipe side supporting device and a right bent pipe side supporting device, wherein the second sliding plate (33) is arranged on the track (20) in a sliding mode, the second driving motor is arranged on the second sliding plate (33), the second driving motor is in transmission connection with a second driving gear (28), and the second driving gear (28) is meshed with the straight rack; the second lifting driving cylinder (31) is arranged on the second sliding plate (33) and is in transmission connection with the second lifting plate (34), the second lifting plate (34) is arranged below the second sliding plate (33), the pipe clamping mechanism is located in the middle of the second lifting plate (34), the left and right sets of bent pipe side supporting devices are respectively arranged on the second lifting plate (34) in a left-right distribution mode, and the pipe clamping mechanism and the bent pipe side supporting devices are staggered front and back.

9. The automatic pipe bending and punching production line of claim 1, wherein: straight tube storage rack (1) includes pipe support (11), throw material arm (17) and separate the jaw subassembly, be equipped with U type groove (12) that are used for vertical direction to put the straight tube on pipe support (11), the front end left and right sides of pipe support (11) is equipped with axle bed (14), it is equipped with to rotate on axle bed (14) and throws material arm (17), be equipped with spacing arch (141) that exceeds the upper surface of throwing material arm (17) on axle bed (14), it is two sets of about being equipped with to separate the jaw subassembly, the one end of separating the jaw subassembly in every group is connected with linkage push pedal (16), the other end of separating the jaw subassembly stretches to in the vertical face in place of U type groove (12) in pipe support (11), slide setting around linkage push pedal (16) on pipe support (11).

10. The automatic pipe bending and punching production line of claim 9, wherein: the separation fork head assembly comprises more than one separation fork head (13), when the separation fork head (13) is provided with more than two, the separation fork heads (13) are distributed from top to bottom, and the separation fork heads (13) are sequentially staggered from top to bottom.