CN113231504A - Automatic pipe bending production line - Google Patents

Abstract

The invention provides an automatic pipe bending production line, and belongs to the technical field of pipe fitting processing. The automatic pipe bending production line comprises an automatic feeding mechanism, a pipe bending mechanism and a transfer mechanism; according to the automatic pipe bending machine, automatic feeding and blanking of pipe fittings and automatic transfer of the pipe fittings in the pipe bending process are realized through the automatic feeding mechanism and the transfer mechanism, the workload of operators is reduced, the machining efficiency is improved, and the safety risk brought by manual operation is reduced. In addition, the lifting assembly is arranged to lift and accurately position the pipe fitting to be machined, so that the stability of the pipe fitting in the pipe bending process is guaranteed, the quality of pipe fitting bending is guaranteed, and the pipe bending requirements of the pipe fitting with the longer length and the thicker pipe wall are better met.

Description

Automatic pipe bending production line

Technical Field

The invention relates to the technical field of pipe fitting processing, in particular to an automatic pipe bending production line.

Background

With the application of a large number of pipe fittings in a pipeline system, the improvement of the processing efficiency, the processing quality and the processing safety of the pipe fittings becomes a problem to be solved urgently in the industry.

For a pipe with a longer length and a thicker pipe wall, a sufficient bending driving force needs to be provided when the pipe is bent, and meanwhile, the stability of the pipe to be processed needs to be maintained during the processing. However, generally adopt manual operation to the mode of the tube bending of above-mentioned pipe fitting at present, the manual work carries out the pipe fitting and goes up unloading, and simultaneously, adopt the rotating electrical machines to carry out the return bend and rotate, and do not set up the lifting structure, operator's work burden has not only been increased, there is great potential safety hazard, machining efficiency is low, and simultaneously, need choose the motor that power is big for use, not only the energy consumption is high, and the problem of damage still easily appears, in addition, the pipe fitting easily appears moving in the course of working, pipe fitting stability is relatively poor, thereby lead to the pipe fitting after the tube bending to be in machining efficiency, there is not enough in the aspect of processing quality and processing security, be difficult to satisfy the tube bending demand of the pipe fitting that length is longer, the pipe wall is thicker.

Disclosure of Invention

To the above-mentioned problem that exists among the prior art, it aims at providing automatic return bend production line now, with setting up automatic feeding mechanism, return bend mechanism and set up the transport mechanism between feeding mechanism and return bend mechanism, the material loading has been realized, the automation mechanized operation of unloading and return bend in-process transportation, work burden has been alleviateed, machining efficiency has been improved, safety risk has been reduced, in addition, adopt flexible drive mode to drive the rotation of return bend axle among the return bend mechanism, compare in the motor, drive power is big and more stable, and be provided with and lift the subassembly and lift the pipe fitting, the stability of return bend in-process pipe fitting has been guaranteed, the processing quality has been guaranteed, better the pipe bending demand of the pipe fitting that has satisfied length longer, the pipe wall is thicker.

The specific technical scheme is as follows:

an automated pipe bending line having features including:

the automatic feeding mechanism is provided with a conveying belt, and a plurality of supporting fixture blocks are sequentially arranged on the conveying belt along the conveying direction;

the pipe bending mechanism is arranged at one end of the conveying belt and comprises a rack, a lifting assembly, a pipe bending shaft, a pipe bending expansion device driver, a clamping module and a guide module, wherein the lifting assembly is arranged on the rack and is arranged along the direction perpendicular to the conveying belt, the pipe bending shaft is rotatably arranged on the rack and is positioned at one end of the lifting assembly, a pipe bending wheel die is arranged on the pipe bending shaft, meanwhile, the pipe bending expansion driver is arranged on the rack and is in power connection with the pipe bending shaft, the clamping module and the guide module are arranged on the rack in parallel and are positioned at the side of the pipe bending shaft, and the guide module is positioned between the lifting assembly and the clamping module;

transport mechanism, transport mechanism set up in the side of frame and lie in between autoloading mechanism and the return bend mechanism, and simultaneously, transport mechanism lies in the one end that the frame is provided with the return bend axle, and transport mechanism has to grab and takes to hold.

The automatic pipe bending production line comprises a conveying belt, a chain and a conveying rotary driver, wherein the conveying belt comprises a chain wheel, the chain and the conveying rotary driver, the supporting frame is horizontally arranged, the chain wheels are arranged at two ends of the supporting frame, the chain is wound on the chain wheels arranged at the two ends, the conveying rotary driver is arranged on the supporting frame, the conveying rotary driver is in power connection with one chain wheel, a plurality of supporting clamping blocks are sequentially arranged on the outer side of the chain at intervals along the winding direction of the chain, and a clamping groove with an inner concave is formed in each supporting clamping block.

The automatic pipe bending production line comprises a positioning block, a positioning pushing portion and a plurality of fixed lifting portions, wherein the positioning block is arranged beside a pipe bending shaft and located on a die clamping assembly, the positioning pushing portion is arranged on a rack and located at one end departing from the pipe bending shaft, a connecting line of the positioning pushing portion and the positioning block is in the tangential direction of the pipe bending shaft, and the fixed lifting portions are arranged on the rack along the connecting line direction of the positioning pushing portion and the positioning block at intervals and located between the positioning pushing portion and the positioning block.

Foretell automatic return bend production line, wherein, location promotion portion is including promoting the balladeur train, push guide rail, promote the expansion bend, promote the guide arm, promote the piece, spacing rack, spacing tool to lock and spacing tooth piece, push guide rail sets up to be served and arrange along the tangential of return bend axle in the frame that deviates from one of return bend axle, promote the balladeur train and slide to locate on promoting the guide rail, promote the expansion bend and all set up on promoting the balladeur train and all arrange along the direction of arranging of push guide rail with promoting the guide arm, simultaneously, the one end of the telescopic shaft that promotes the expansion bend is arranged and fixed mounting is promoted the piece towards return bend axle one side, promote the guide arm and locate on promoting the balladeur train and be connected with promoting the piece along its axial cunning, and, spacing rack sets up in the frame and arranges in parallel with pushing guide rail, spacing tool to lock is installed on promoting the balladeur train, install on the spacing tooth piece that can mesh with spacing rack on the spacing tool to lock.

Foretell automatic pipe bending production line, wherein, promote the balladeur train and include the bottom slide, the upper portion balladeur train, middle guide rail and lateral part adjustment driver, the bottom slide is slided and is located on promoting the guide rail, middle guide rail installs on the bottom slide and perpendicular to promotes the guide rail and arranges, the upper portion balladeur train is slided and is located on middle guide rail, lateral part adjustment driver sets up on the bottom slide and its drive connection on the balladeur train of upper portion, and simultaneously, promote the expansion bend, promote the guide arm and all set up on the upper portion balladeur train, spacing tool to lock sets up on the bottom slide.

Foretell automatic elbow production line, wherein, fixed portion of lifting is including adjusting the base, two adjusting connecting rods, adjusting sliding block, bracing piece and gyro wheel, adjusting the base and setting up in the frame, a spout has been seted up along the line direction of location promotion portion and locating piece on the adjusting base, adjusting sliding block slides and locates in the spout, and simultaneously, one of them one end of two adjusting connecting rods is articulated each other, the other end of two adjusting connecting rods articulates respectively on adjusting base and adjusting sliding block, the one end of bracing piece articulates in the articulated department that two adjusting connecting rods articulated each other, be provided with the gyro wheel on the other end of bracing piece, and seted up the race on the gyro wheel.

Foretell automatic return bend production line, wherein, still lift the portion including the activity, the activity is lifted the portion and is set up between fixed portion of lifting and the guide die subassembly, including the switching piece, the apparatus further comprises a rotating shaft, first deflection connecting rod, the second deflection connecting rod, lift flexible driver and lift roller bearing, the bottom of switching piece is installed in the frame, the upper portion of switching piece is rotated and is installed the pivot, and the both ends of pivot stretch out respectively outside the switching piece, the pivot stretches out the outer both ends of switching piece and first deflection connecting rod of fixedly connected with and second deflection connecting rod respectively, and simultaneously, lift flexible driver installs in the frame and its telescopic shaft and first deflection connecting rod have deviated from the one end of being connected the pivot articulated, the second deflection connecting rod deviates from the one end of being connected the pivot and the axostylus axostyle fixed connection of lift roller bearing.

The automatic pipe bending production line comprises a die clamping assembly, a die clamping slide rail, a die clamping slide plate, a die clamping module, a first die clamping connecting rod, a second die clamping connecting rod and a die clamping telescopic driver, wherein the upper end and the lower end of one side of the die clamping assembly are respectively and fixedly arranged at the upper end and the lower end of a pipe bending shaft, the die clamping slide rail is arranged on the die clamping slide plate along the radial direction of the pipe bending shaft, the die clamping slide plate is arranged on the die clamping slide rail in a sliding manner, the die clamping module is arranged on the die clamping slide plate, one side of the die clamping slide plate extends towards the pipe bending wheel die, one end of the first die clamping connecting rod is hinged with one end, moreover, the other end of the first die clamping connecting rod is hinged on the die clamping seat, the other end of the second die clamping connecting rod is hinged on the die clamping sliding plate, meanwhile, the die clamping telescopic driver is arranged on the die clamping seat, and a telescopic shaft of the die clamping telescopic driver is hinged with a hinged part where the first die clamping connecting rod and the second die clamping connecting rod are hinged with each other.

In the automatic pipe bending production line, the guide die assembly comprises the abutting part and the following part, and,

the abutting part comprises a guide die seat, a guide die slide rail, a guide die slide plate, a first guide die connecting rod, a second guide die connecting rod and a guide die telescopic driver, one side of the guide die seat is fixedly arranged on the rack, the guide die slide rail is arranged on the guide die seat along the radial direction of the bent tube shaft, the guide die slide plate is arranged on the guide die slide rail in a sliding manner, one end of the first guide die connecting rod is hinged with one end of the second guide die connecting rod, the other end of the first guide die connecting rod is hinged on the guide die seat, the other end of the second guide die connecting rod is hinged on the guide die slide plate, and meanwhile, the guide die telescopic driver is arranged on the guide die seat, and the telescopic shaft of the guide die telescopic driver is hinged with the hinged part where the first guide die connecting rod and the second guide die connecting rod are hinged;

the following portion includes the mounting panel, follows the slide rail, follows the slide, supports tight piece and straight line and follows the attenuator, and the mounting panel is installed on leading the mould slide, and the mounting panel has one along the curb plate of return bend axle tangential arrangement, follows the slide rail and sets up on the curb plate along the tangential of return bend axle, follows the slide and locates on following the slide rail, supports tight piece and sets up on following the slide and extend towards return bend wheel mould, and the attenuator is followed to the straight line sets up on following the slide and with follow the slide and be connected.

The automatic elbow production line is characterized in that a gear and a toothed belt are arranged between the elbow telescopic driver and the elbow shaft, the gear is fixedly mounted on the elbow shaft, the gear is also arranged at one end, deviating from the elbow shaft, of the rack, the toothed belt is wound on the two gears and is an open toothed belt, the elbow telescopic driver is a double-end linear driver, and two ends of the toothed belt are respectively connected to telescopic heads at two ends of the elbow telescopic driver.

The positive effects of the technical scheme are as follows:

foretell automatic return bend production line, through setting up autoloading mechanism, return bend mechanism and transport mechanism, the material loading has been realized, the automation mechanized operation that unloading and return bend in-process pipe fitting were transported, work burden has been alleviateed, machining efficiency has been improved, the safety risk that manual operation brought has been reduced, in addition, the linear motion through the flexible driver of return bend drives the return bend axle rotation among the return bend mechanism, compare in the rotary motion of motor, drive power is big and stable, still be provided with in addition and lift the subassembly and treat the pipe fitting of processing and lift and pinpoint, the stability of return bend in-process pipe fitting has been guaranteed, thereby pipe fitting bending's quality has been guaranteed, better satisfied length is longer, the pipe bending demand of the pipe fitting that the pipe wall is thicker.

Drawings

FIG. 1 is a block diagram of an embodiment of an automated pipe bending line of the present invention;

FIG. 2 is a structural diagram of an automatic feeding mechanism according to a preferred embodiment of the present invention;

FIG. 3 is a block diagram of a tube bending mechanism according to a preferred embodiment of the present invention;

FIG. 4 is a schematic diagram of a positioning pushing portion according to a preferred embodiment of the present invention;

FIG. 5 is a schematic diagram of a fixing lift unit according to a preferred embodiment of the present invention;

FIG. 6 is a schematic diagram of a movable lifting unit according to a preferred embodiment of the present invention;

FIG. 7 is a block diagram of a clamp die assembly in accordance with a preferred embodiment of the present invention;

FIG. 8 is a block diagram of a guide module according to a preferred embodiment of the present invention.

In the drawings: 1. an automatic feeding mechanism; 11. a conveyor belt; 12. supporting the clamping block; 13. a support frame; 111. a sprocket; 112. a chain; 113. a feed rotary drive; 121. a card slot; 2. a pipe bending mechanism; 21. a frame; 22. a lifting assembly; 23. bending a pipe shaft; 24. a bend expander driver; 25. a die clamping assembly; 26. a guide die assembly; 221. positioning blocks; 222. a positioning pushing part; 223. fixing the lifting part; 224. a movable lifting part; 231. bending a pipe wheel die; 241. a gear; 242. a toothed belt; 251. a die clamping seat; 252. clamping a die slide rail; 253. a die clamping slide plate; 254. a clamp module; 255. a first clamp die link; 256. a second die clamping connecting rod; 257. a clamp die telescoping actuator; 261. a tightening part; 262. a following section; 2221. pushing the carriage; 2222. pushing the guide rail; 2223. pushing the telescopic device; 2224. pushing the guide rod; 2225. a pushing block; 2226. a limit rack; 2227. a limiting lockset; 2228. a limit tooth block; 2231. adjusting the base; 2232. adjusting the connecting rod; 2233. adjusting the sliding block; 2234. a support bar; 2235. a roller; 2241. a transfer block; 2242. a rotating shaft; 2243. a first deflection link; 2244. a second deflection link; 2245. a lifting telescopic driver; 2246. a lifting roller; 2611. a guide die holder; 2612. a guide die slide rail; 2613. a guide die slide plate; 2614. a first die guide connecting rod; 2615. a second die guide connecting rod; 2616. a guided mode telescopic driver; 2621. a mounting plate; 2622. following the slide rail; 2623. a following slide plate; 2624. a propping block; 2625. a linear following damper; 2221a, bottom slide plate; 2221b, upper carriage; 2221c, intermediate rail; 2221d, side adjustment drive; 3. a transfer mechanism; 4. a pipe fitting.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the present invention easy to understand, the following embodiments specifically describe the technical solutions provided by the present invention with reference to fig. 1 to 8, but the following contents are not to be taken as limitations of the present invention.

Fig. 1 is a block diagram of an embodiment of an automatic pipe bending line of the present invention. As shown in fig. 1, the automatic pipe bending production line provided by this embodiment includes: automatic feeding mechanism 1, return bend mechanism 2 and transport mechanism 3.

Specifically, the automatic feeding mechanism 1 is horizontally arranged on the ground, the automatic feeding mechanism 1 comprises a conveyor belt 11 which conveys along one direction, the pipe fitting 4 to be processed is automatically conveyed to the pipe bending mechanism 2 through the conveyor belt 11, and conditions are provided for automatic feeding. And, have set gradually a plurality of support fixture blocks 12 along direction of transfer on conveyer belt 11, carry on spacingly to placing the pipe fitting 4 of treating processing on conveyer belt 11 through supporting fixture block 12, prevent that the pipe fitting 4 of treating processing on conveyer belt 11 from removing or dropping, provide the condition for the material loading of follow-up pipe fitting 4, also improved the security of processing simultaneously.

Specifically, the pipe bending mechanism 2 is disposed at one end of the conveyor belt 11, so that the pipe 4 to be processed, which is conveyed by the conveyor belt 11, can be received and processed by the pipe bending mechanism 2. At this moment, return bend mechanism 2 includes frame 21 again, lift subassembly 22, return bend axle 23, return bend expansion bend ware driver 24, press from both sides mould subassembly 25 and guide module 26, it arranges just along perpendicular to conveyer belt 11 to set up lift subassembly 22 in frame 21, make and transport the pipe fitting 4 of treating processing that comes through conveyer belt 11 and can put into on lifting subassembly 22, treat the pipe fitting 4 of processing and support and fix a position through lifting subassembly 22, can guarantee the machining dimension of pipe fitting 4, can also make and prevent in the course of working that pipe fitting 4 from removing, the stability of course of working has been guaranteed, thereby the quality of return bend processing has been guaranteed. And, the return bend axle 23 rotates and installs in frame 21 and is located the one end of lifting subassembly 22, installs return bend wheel mould 231 on the return bend axle 23 for when needs carry out the pipe bending process, the region that needs are bent of the pipe fitting 4 of treating processing leans on return bend wheel mould 231, drives return bend wheel mould 231 through return bend axle 23 and rotates, realizes the bending to pipe fitting 4. Meanwhile, the elbow telescopic driver is arranged on the rack 21 and is in power connection with the elbow shaft 23, the elbow shaft 23 is driven to rotate through the elbow telescopic driver, and the elbow shaft 23 is driven to rotate in a telescopic mode. In addition, the die clamping assembly 25 and the die guiding assembly 26 are arranged on the frame 21 in parallel and located beside the elbow shaft 23, and meanwhile, the die guiding assembly 26 is located between the lifting assembly 22 and the die clamping assembly 25, so that after the pipe 4 to be processed is supported and positioned by the lifting assembly 22, the pipe 4 to be processed is pressed on the elbow wheel die 231 on the elbow shaft 23 through the die guiding assembly 26 and the die clamping assembly 25, and the pipe 4 to be processed can be bent by the elbow wheel die 231, thereby realizing elbow processing.

Specifically, transport mechanism 3 sets up in the side of frame 21, and transport mechanism 3 has to grab and takes to hold, and transport mechanism 3 is located between autoloading mechanism 1 and the return bend mechanism 2, gets the back through transport mechanism 3 and gets the pipe fitting 4 clamp of treating processing that autoloading mechanism 1 transported to and transports to return bend mechanism 2, has realized the automatic feeding of pipe fitting 4. Simultaneously, transport mechanism 3 is located the one end that frame 21 was provided with bent pipe shaft 23 for transport mechanism 3 more is close to bent pipe shaft 23, thereby makes pipe fitting 4 after the follow-up bending also can be snatched the back by transport mechanism 3 and transports, realizes the automatic unloading of pipe fitting 4, thereby has alleviateed operator's work burden, has reduceed the safety risk that manual operation brought, has improved machining efficiency. It should be noted that the transfer mechanism 3 may be a multi-axis robot commonly used in the market, and has a mature application technology, is easy to obtain, and can realize multi-directional movement.

Fig. 2 is a structural diagram of an automatic feeding mechanism according to a preferred embodiment of the present invention. As shown in fig. 1 and 2, the automatic feeding mechanism 1 further includes a supporting frame 13 in addition to the conveyor belt 11 and the supporting blocks 12 disposed on the conveyor belt 11. At this time, the supporting frame 13 is horizontally disposed on the ground, the conveyor belt 11 is disposed on the supporting frame 13, and the conveyor belt 11 further includes a sprocket 111, a chain 112, and a feeding rotary driver 113. Both ends at support frame 13 all are provided with sprocket 111 to with chain 112 around locating on the sprocket 111 at both ends, make chain 112 can rotate on sprocket 111, simultaneously, set up pay-off rotary actuator 113 on support frame 13, and, pay-off rotary actuator 113 power is connected on one of them sprocket 111, makes pay-off rotary actuator 113 can drive sprocket 111 and rotate, thereby drives chain 112 and rotates, in order to satisfy the user demand of conveying. And, a plurality of support fixture blocks 12 are along winding of chain 112 to establish the direction and arrange in proper order the interval in the outside of chain 112, all set up the draw-in groove 121 of indent on each support fixture block 12, provide spacing space for placing the pipe fitting 4 of treating processing on supporting fixture block 12 through draw-in groove 121 to the problem that pipe fitting 4 of treating processing moved or dropped on conveyer belt 11 has been prevented, and the safety guarantee nature is higher.

FIG. 3 is a block diagram of a pipe bending mechanism according to a preferred embodiment of the present invention. As shown in fig. 1 and 3, the lift assembly 22 of the tube bending mechanism 2 further includes a positioning block 221, a positioning pushing portion 222, and a plurality of fixed lift portions 223. At this moment, the locating piece 221 sets up in bent pipe axle 23 side and is located die clamping assembly 25 for treat the pipe fitting 4 of processing behind contact return bend wheel mould 231 and die clamping assembly 25, treat the one end of the pipe fitting 4 of processing and can support by on locating piece 221, realized treating the location of the pipe fitting 4 of processing, the return bend precision has been guaranteed, simultaneously, can also make the follow-up die clamping assembly 25 of following of locating piece 221 remove, make locating piece 221 can fix a position pipe fitting 4 all the time, structural design is more reasonable. In addition, the positioning pushing portion 222 is disposed on the frame 21, and the positioning pushing portion 222 is located at one end away from the elbow shaft 23, so that the positioning pushing portion 222 can be located at the other end of the pipe 4 to be processed, that is, the positioning block 221 and the positioning pushing portion 222 are respectively located at two ends of the pipe 4 to be processed, which provides a condition for subsequently positioning the pipe 4 to be processed. In addition, the connecting line of the positioning pushing portion 222 and the positioning block 221 is the tangential direction of the pipe bending shaft 23, so that after the pipe fitting 4 to be processed abuts against the pipe bending wheel die 231, the positioning pushing portion 222 and the positioning block 221 can be just positioned at two ends of the pipe fitting 4 to be processed, and the position arrangement is more reasonable. And, a plurality of fixed portions 223 of lifting set up in frame 21 along the line direction interval of location promotion portion 222 and locating piece 221, and simultaneously, a plurality of fixed portions 223 of lifting all are located between location promotion portion 222 and the locating piece 221, make the pipe fitting 4 that treats processing that is in between location promotion portion 222 and the locating piece 221 can be supported by fixed portion 223 of lifting, thereby the problem of pipe fitting 4 removal or skew in the elbow machining process has been prevented, the bending angle of pipe fitting 4 has been guaranteed, the processing quality is higher, structural design is more reasonable.

Fig. 4 is a structural diagram of a positioning pushing portion according to a preferred embodiment of the invention. As shown in fig. 1, 3 and 4, the positioning pushing part 222 of the lift assembly 22 further includes a pushing carriage 2221, a pushing rail 2222, a pushing expansion piece 2223, a pushing guide bar 2224, a pushing block 2225, a limit rack 2226, a limit lock 2227 and a limit tooth block 2228. At this time, the push guide 2222 is disposed on an end of the frame 21 away from the bent axle 23 and arranged tangentially to the bent axle 23, and the push carriage 2221 is slidably disposed on the push guide 2222 such that the push carriage 2221 approaches or departs from the bent axle 23. Moreover, the push jack 2223 and the push guide bar 2224 are both disposed on the push carriage 2221 and are both disposed along the arrangement direction of the push guide rail 2222, so that the push jack 2223 and the push guide bar 2224 are mounted on the push carriage 2221. Meanwhile, one end of the telescopic shaft of the push telescopic device 2223 is disposed toward one side of the bent shaft 23 and fixedly mounted with a push block 2225, so that the push telescopic device 2223 can drive the push block 2225 to approach or depart from the bent shaft 23. Moreover, the push guide bar 2224 is slidably disposed on the push carriage 2221 along the axial direction thereof and is connected to the push block 2225, so that the push guide bar 2224 can guide the push block 2225 during the movement of the push block 2225, and the movement stability of the push block 2225 is maintained, so that the push block 2225 can contact the pipe 4 to be processed and push the pipe 4 to a predetermined position, thereby positioning the pipe 4 to be processed. Also, the limiting rack 2226 is disposed on the frame 21 and arranged parallel to the push rail 2222, so that when the push carriage 2221 moves on the push rail 2222, the push carriage 2221 is located in the area of the limiting rack 2226. In addition, the limit lock 2227 is mounted on the pushing carriage 2221, and the limit lock 2227 is mounted with a limit tooth block 2228 that can engage with the limit rack 2226, that is, after the limit lock 2227 controls the limit tooth block 2228 to be locked on the limit rack 2226, the movement of the pushing carriage 2221 on the pushing guide rail 2222 can be limited, and when the limit lock 2227 does not lock the limit tooth block 2228 on the limit rack 2226, the pushing carriage 2221 can move on the pushing guide rail 2222, so that the position of the pushing carriage 2221 can be adjusted, thereby adapting to the positioning requirements of the pipe fittings 4 to be processed with different lengths.

More specifically, the pushing carriage 2221 of the positioning pushing part 222 further includes a bottom sliding plate 2221a, an upper carriage 2221b, an intermediate guide rail 2221c, and a side adjustment driver 2221 d. At this time, the bottom slide 2221a is slidably mounted on the push rail 2222 so that the bottom slide can move on the push rail 2222, while the middle rail 2221c is mounted on the bottom slide 2221a and arranged perpendicular to the push rail 2222, and the upper carriage 2221b is slidably mounted on the middle rail 2221c so that the upper carriage 2221b can move on the middle rail 2221c in a direction perpendicular to the push rail 2222, thereby achieving movement of the upper carriage 2221b in both directions along the push rail 2222 and the vertical push rail 2222, and providing conditions for subsequent positional adjustment of the upper carriage 2221 b. In addition, the side adjustment driver 2221d is disposed on the bottom sliding plate 2221a and the driving shaft thereof is connected to the upper carriage 2221b, so that the side adjustment driver 2221d can drive the upper carriage 2221b to move, and a driving force is provided for adjusting the position of the upper carriage 2221 b. Meanwhile, the push telescopic device 2223 and the push guide rod 2224 are both arranged on the upper sliding frame 2221b, and the limiting lock 2227 is arranged on the bottom sliding plate 2221a, so that the push telescopic device 2223, the push guide rod 2224 and the push block 2225 connected with the push guide rod 2224 can move along with the upper sliding frame 2221b, position adjustment is realized, the positioning requirements of pipe fittings 4 with different lengths and diameters are met, meanwhile, the lock can lock and unlock the bottom sliding plate 2221a, and conditions are provided for controlling the movement and fixation of the positioning pushing part 222.

FIG. 5 is a schematic diagram of a fixing lifting unit according to a preferred embodiment of the present invention. As shown in fig. 1, 3 and 5, the fixed lifting portion 223 of the lifting assembly 22 further includes an adjusting base 2231, two adjusting links 2232, an adjusting slider 2233, a supporting rod 2234 and a roller 2235. At this time, the adjusting base 2231 is disposed on the frame 21, so that the fixed lifting portion 223 is mounted on the frame 21, meanwhile, a sliding groove is formed on the adjusting base 2231 along a direction of a connection line between the positioning pushing portion 222 and the positioning block 221, the adjusting slider 2233 is slidably disposed in the sliding groove, so that the adjusting slider 2233 can adjust a position on the adjusting base 2231, meanwhile, one end of each of the two adjusting links 2232 is hinged to each other, the other end of each of the two adjusting links 2232 is hinged to the adjusting base 2231 and the adjusting slider 2233, one end of the supporting rod 2234 is hinged to a hinge point where the two adjusting links 2232 are hinged to each other, so that the adjusting slider 2233 can drive the two adjusting links 2232 to move when the adjusting slider 2231 is in position, so that a height of the hinge point where the two adjusting links 2232 are hinged to each other changes, and in addition, a roller 2235 is disposed on the other end of the supporting rod 2234, so that the height of the supporting rod 2234 with the roller 2235 can be changed along with the movement of the adjusting slide block 2233, thereby satisfying the lifting requirements of the pipe fittings 4 with different diameters. And, set up the race on gyro wheel 2235 for treat that the pipe fitting 4 of processing can be restricted by the race when being lifted by gyro wheel 2235, prevented to appear moving or the problem of slippage in the course of working, the safety guarantee nature is higher, has improved the machining precision.

FIG. 6 is a schematic diagram of a movable lifting unit according to a preferred embodiment of the present invention. As shown in fig. 1, 3, and 6, the lift assembly 22 further includes a movable lift portion 224. At this moment, the movable lifting part 224 is arranged between the fixed lifting part 223 and the guide die assembly 26, so that the pipe fitting 4 can be bent in the pipe machining process, if the length of the pipe fitting 4 is short, the pipe fitting 4 can fall off from the fixed lifting part 223 after moving along with the pipe bending wheel die 231, and at this moment, the pipe fitting 4 is supported by the movable lifting part 224, so that the normal machining is ensured.

More specifically, the movable lifting portion 224 further includes a connecting block 2241, a rotating shaft 2242, a first deflecting connecting rod 2243, a second deflecting connecting rod 2244, a lifting/retracting driver 2245, and a lifting/lowering roller 2246. At this time, the bottom of the switching block 2241 is installed on the frame 21, the rotating shaft 2242 is installed on the upper portion of the switching block 2241 in a rotating manner, and two ends of the rotating shaft 2242 respectively extend out of the switching block 2241, two ends of the rotating shaft 2242 extending out of the switching block 2241 are respectively and fixedly connected with the first and second deflecting connecting rods 2243 and 2244, and at the same time, the lifting/retracting driver 2245 is installed on the frame 21 and its telescopic shaft is hinged to one end of the first deflecting connecting rod 2243 away from the connecting rotating shaft 2242, and one end of the second deflecting connecting rod 2244 away from the connecting rotating shaft 2242 is fixedly connected with the shaft lever of the lifting/lowering roller 2246, so that the rotating shaft 2245 can be driven by the first deflecting connecting rod 2243 to rotate in the action process, so that the rotating shaft 2242 can drive the lifting/lowering roller 2246 to move by the second deflecting connecting rod 2244, thereby realizing the height adjustment of the lifting/lowering roller 2246, i.e. when the movable lifting/lifting part 224 is needed, through the height that risees lift roller 2246 for lift roller 2246 can contact the pipe fitting 4 of treating processing and lift, and when need not to use activity lifting portion 224, can reduce lift roller 2246's height, thereby make lift roller 2246 be in lower position, avoid treating the pipe fitting 4 of processing to disturb, and structural design is more reasonable.

FIG. 7 is a block diagram of a clamp die assembly according to a preferred embodiment of the present invention. As shown in fig. 1, 3 and 7, the die clamping assembly 25 of the tube bending mechanism 2 further includes a die clamping base 251, a die clamping slide rail 252, a die clamping slide plate 253, a die clamping module 254, a first die clamping link 255, a second die clamping link 256 and a die clamping telescopic driver 257. At this time, the upper end and the lower end of one side of the die clamping seat 251 are respectively and fixedly installed at the upper end and the lower end of the elbow shaft 23, so that the die clamping seat 251 can rotate along the elbow shaft 23, the die clamping slide rail 252 is installed on the die clamping seat 251 in the radial direction of the elbow shaft 23, the die clamping slide plate 253 is slidably installed on the die clamping slide rail 252, the die clamping module 254 is installed on the die clamping slide plate 253, and one side of the die clamping slide plate extends towards the elbow wheel die 231, so that the die clamping slide plate 253 can drive the die clamping module 254 to slide on the die clamping slide rail 252, so that the die clamping module 254 is close to or away from the elbow wheel die 231 on the elbow shaft 23, when the die clamping module 254 is close to the elbow wheel die 231, two sides of the pipe 4 to be processed are respectively abutted against by the elbow wheel die 231 and the die clamping module 254, thereby fixing the pipe 4 to be processed on the elbow wheel die 231 is realized, so that the pipe 4 to be processed can be bent when the elbow wheel die 231 rotates along with the elbow shaft 23, and the pipe bending operation is realized. In addition, one end of the first die clamping connecting rod 255 is hinged to one end of the second die clamping connecting rod 256, the other end of the first die clamping connecting rod 255 is hinged to the die clamping seat 251, the other end of the second die clamping connecting rod 256 is hinged to the die clamping sliding plate 253, meanwhile, the die clamping telescopic driver 257 is arranged on the die clamping seat 251, a telescopic shaft of the die clamping telescopic driver is hinged to a hinged portion where the first die clamping connecting rod 255 and the second die clamping connecting rod 256 are hinged to each other, when the die clamping telescopic driver 257 acts, the die clamping telescopic driver 257 can drive the hinged portion where the first die clamping connecting rod 255 and the second die clamping connecting rod 256 are hinged to each other to move, so that the second die clamping connecting rod 256 drives the die clamping sliding plate 253 to move on the die clamping sliding rail 252, control over the die clamping module 254 approaching to or leaving from the die bending wheel die is realized, and clamping or loosening the pipe fitting 231 is realized. And moreover, the double-connecting-rod structure is adopted for driving, self-locking can be realized, and the problem that the bent pipe is not in place due to the retraction of the clamping module 254 in the pipe bending process is solved.

FIG. 8 is a block diagram of a guide module according to a preferred embodiment of the present invention. As shown in fig. 1, fig. 3 and fig. 8, the die guiding assembly 26 of the tube bending mechanism 2 further includes a tightening portion 261 and a following portion 262, and the following portion 262 is disposed on the tightening portion 261, so that the following portion 262 can be driven by the tightening portion 261, and meanwhile, the following portion 262 can also move by itself, thereby realizing that the tube 4 can be moved when the tube 4 is moved in the subsequent processing process, and avoiding the problem that the tube 4 is damaged due to rigid friction between the tube 4 and the die guiding assembly 26.

More specifically, the abutting portion 261 further includes a mold guiding base 2611, a mold guiding rail 2612, a mold guiding sliding plate 2613, a first mold guiding link 2614, a second mold guiding link 2615 and a mold guiding telescopic driver 2616. At this time, one side of the mold guide 2611 is fixedly mounted on the frame 21, a mold guide slide 2612 is disposed on the mold guide 2611 along the radial direction of the elbow shaft 23, and the mold guide slide 2613 is slidably disposed on the mold guide slide 2612, so that the mold guide slide 2613 can move on the mold guide slide 2612 to approach or separate from the elbow wheel mold 231. Moreover, one end of the first mold guiding connecting rod 2614 is hinged to one end of the second mold guiding connecting rod 2615, the other end of the first mold guiding connecting rod 2614 is hinged to the mold guiding base 2611, the other end of the second mold guiding connecting rod 2615 is hinged to the mold guiding sliding plate 2613, and meanwhile, the mold guiding telescopic driver 2616 is arranged on the mold guiding base 2611, and a telescopic shaft of the mold guiding telescopic driver is hinged to a hinged position where the first mold guiding connecting rod 2614 and the second mold guiding connecting rod 2615 are hinged to each other, so that when the mold guiding telescopic driver 2616 acts, the mold guiding telescopic driver 2616 can drive the hinged position where the first mold guiding connecting rod 2614 and the second mold guiding connecting rod 2615 are hinged to move on the mold guiding sliding rail 2612, control of the mold guiding sliding plate 2613 to approach or leave the elbow wheel mold 231 is achieved, and conditions are provided for subsequently driving the following portion 262 to approach or leave the elbow wheel mold 231. Similarly, the double-connecting-rod structure is adopted for driving, self-locking can be achieved, and the problem that the bent pipe is not in place due to the fact that the guide die sliding plate 2613 retracts in the pipe bending process is solved.

More specifically, the following portion 262 further includes a supporting plate 2621, a following slide rail 2622, a following slide plate 2623, a resisting block 2624 and a linear following damper 2625. At this moment, install mounting panel 2621 on mould slide 2613, make mounting panel 2621 can follow mould slide 2613 and remove, and simultaneously, mounting panel 2621 has a curb plate of arranging along bent pipe shaft 23 tangential, follow slide 2622 and set up on the curb plate along bent pipe shaft 23's tangential, and, follow slide 2623 and set up on following slide 2622, make and follow slide 2623 and can follow the tangential of return bend wheel mould 231 and remove, and simultaneously, support tight piece 2624 and set up and extend on following slide 2623 and towards return bend wheel mould 231, make when mould slide 2613 drives follow portion 262 and be close to return bend wheel mould 231, support tight piece 2624 and can compress tightly pipe fitting 4 on return bend wheel mould 231, support the basis for realizing that the return bend provides to support. In addition, follow attenuator 2625 with the straight line and set up on following slide 2623 and be connected with following slide 2623 for when return bend wheel mould 231 rotates and drives pipe fitting 4 and remove, support tight piece 2624 can follow its pipe fitting 4 that supports tightly under the effect of following slide 2623 and straight line following attenuator 2625 and remove, thereby avoided supporting tight piece 2624 and by the structural damage problem that its pipe fitting 4 looks frictioning that supports tightly leads to, guaranteed the processing quality. It is worth pointing out that the linear following damper 2625 is adopted to connect the following sliding plate 2623, so that the following sliding plate 2623 can be prevented from moving randomly on the premise of meeting the following requirement, and the safety guarantee is higher. In addition, the linear following damper 2625 can be a cylinder or an oil cylinder which is not connected to a pressure source, can move freely and has a certain friction force, and the structural design is more reasonable.

More specifically, a gear 241 and a toothed belt 242 are disposed between the elbow telescopic driver of the elbow mechanism 2 and the elbow shaft 23, at this time, a gear 241 is fixedly mounted on the elbow shaft 23, a gear 241 is also disposed on the frame 21 at an end away from the elbow shaft 23, the toothed belt 242 is wound on the two gears 241, the toothed belt 242 is an open toothed belt 242, the elbow telescopic driver is a double-ended linear driver, two ends of the toothed belt 242 are respectively connected to the telescopic heads at two ends of the elbow telescopic driver, so that when the telescopic head of the elbow telescopic driver moves, the toothed belt 242 can be driven to rotate on the gear 241, thereby driving the gear 241 to move, and realizing driving of the elbow shaft 23, at this time, the linear driving of the elbow telescopic driver is converted into the rotational movement of the elbow shaft 23, compared with the rotational motor directly driving the elbow shaft 23 to rotate, the driving force is larger and more stable, and simple structure, equipment cost is low, and is not fragile, and life is longer.

In a preferred embodiment, an adjusting member is further disposed in the middle of the toothed belt 242 in addition to the elbow telescopic driver, in this case, an opening is further disposed on the toothed belt 242, and both ends of the opening on the toothed belt 242 are respectively connected to both ends of the adjusting member, and the length of the opening of the toothed belt 242 is adjusted by the adjusting member, so that the length of the toothed belt 242 is adjusted, the tightness of the toothed belt 242 wound on the gear 241 is controlled, and different use requirements are met. It is worth pointing out that the adjusting piece can be a common double-threaded screw and nut head structure on the market, and the distance between the two nut heads is controlled through the rotation of the double-threaded screw, so that the adjustment is realized, and the specific structure of the adjusting piece is not in the protection range of the embodiment any more, and therefore, the detailed description is omitted.

The automatic pipe bending production line provided by the embodiment comprises an automatic feeding mechanism 1, a pipe bending mechanism 2 and a transfer mechanism 3; automatic feeding of pipe fitting 4 has been realized through autoloading mechanism 1 and transport mechanism 3, automatic unloading and the automatic transportation of return bend in-process pipe fitting 4, the work burden of operator has been alleviateed, machining efficiency has been improved, the safety risk that manual operation brought has been reduced, in addition, still drive the rotation of bent pipe axle 23 through linear motion's the flexible driver of return bend among the return bend mechanism 2, compare in the rotary motion of motor, drive power is big and stable, moreover, the steam generator is simple in structure, it is with low costs, and is not fragile. In addition, the lifting assembly 22 is arranged to lift and accurately position the pipe fitting 4 to be processed, so that the stability of the pipe fitting 4 in the pipe bending process is ensured, the quality of pipe bending of the pipe fitting 4 is ensured, and the pipe bending requirements of the pipe fitting 4 with longer length and thicker pipe wall are better met.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

Claims (10)

1. Automatic return bend production line, its characterized in that includes:

the automatic feeding mechanism is provided with a conveying belt, and a plurality of supporting clamping blocks are sequentially arranged on the conveying belt along the conveying direction;

the pipe bending mechanism is arranged at one end of the conveying belt and comprises a rack, a lifting assembly, a pipe bending shaft, a pipe bending expansion device driver, a clamping die assembly and a guide die assembly, wherein the lifting assembly is arranged on the rack and is arranged along the direction perpendicular to the conveying belt, the pipe bending shaft is rotatably arranged on the rack and is positioned at one end of the lifting assembly, a pipe bending wheel die is arranged on the pipe bending shaft, meanwhile, the pipe bending expansion driver is arranged on the rack and is in power connection with the pipe bending shaft, the clamping die assembly and the guide die assembly are arranged on the rack in parallel and are positioned at the side of the pipe bending shaft, and the guide die assembly is positioned between the lifting assembly and the clamping die assembly;

transport mechanism, transport mechanism set up in the side of frame just is located autoloading mechanism with between the return bend mechanism, simultaneously, transport mechanism is located the frame is provided with the one end of return bend axle, transport mechanism has to grab and takes to hold with hand.

2. The automatic pipe bending production line according to claim 1, wherein the automatic feeding mechanism further comprises a support frame, the conveyor belt comprises a chain wheel, a chain and a feeding rotary driver, the support frame is horizontally arranged, the chain wheel is arranged at each of two ends of the support frame, the chain is wound on the chain wheel arranged at each of the two ends, the feeding rotary driver is arranged on the support frame, the feeding rotary driver is in power connection with one of the chain wheels, a plurality of supporting fixture blocks are sequentially arranged at intervals outside the chain along the winding direction of the chain, and each supporting fixture block is provided with a concave clamping groove.

3. The automatic pipe bending production line according to claim 1, wherein the lifting assembly comprises a positioning block, a positioning pushing portion and a plurality of fixed lifting portions, the positioning block is arranged beside the pipe bending shaft and located on the clamping die assembly, the positioning pushing portion is arranged on the frame and located at one end away from the pipe bending shaft, a connecting line between the positioning pushing portion and the positioning block is a tangential direction of the pipe bending shaft, and the plurality of fixed lifting portions are arranged on the frame and located between the positioning pushing portion and the positioning block at intervals along the connecting line between the positioning pushing portion and the positioning block.

4. The automatic pipe bending production line according to claim 3, wherein the positioning pushing portion comprises a pushing carriage, a pushing guide rail, a pushing expansion piece, a pushing guide rod, a pushing block, a limiting rack, a limiting lock and a limiting toothed block, the pushing guide rail is arranged on one end of the frame, which is far away from the elbow shaft, and is arranged along the tangential direction of the elbow shaft, the pushing carriage is slidably arranged on the pushing guide rail, the pushing expansion piece and the pushing guide rod are both arranged on the pushing carriage and are arranged along the arrangement direction of the pushing guide rail, meanwhile, one end of an expansion shaft of the pushing expansion piece is arranged towards one side of the elbow shaft and is fixedly provided with the pushing block, the pushing guide rod is slidably arranged on the pushing carriage along the axial direction of the pushing guide rod and is connected with the pushing block, and the limiting rack is arranged on the frame and is arranged parallel to the pushing guide rail, the limiting lock is arranged on the pushing sliding frame, and the limiting tooth block which can be meshed with the limiting rack is arranged on the limiting lock.

5. The automatic pipe bending line according to claim 4, wherein the pushing carriage comprises a bottom slide plate, an upper slide plate, an intermediate rail and a side adjustment driver, the bottom slide plate is slidably disposed on the pushing rail, the intermediate rail is mounted on the bottom slide plate and is arranged perpendicular to the pushing rail, the upper slide plate is slidably disposed on the intermediate rail, the side adjustment driver is disposed on the bottom slide plate and has a driving shaft connected to the upper slide plate, meanwhile, the pushing retractor and the pushing guide rod are disposed on the upper slide plate, and the limit lock is disposed on the bottom slide plate.

6. The automatic pipe bending production line according to claim 3, wherein the fixed lifting portion comprises an adjusting base, two adjusting connecting rods, an adjusting slider, a supporting rod and a roller, the adjusting base is disposed on the frame, a sliding groove is formed in the adjusting base along a connecting line direction of the positioning pushing portion and the positioning block, the adjusting slider is slidably disposed in the sliding groove, meanwhile, one ends of the two adjusting connecting rods are hinged to each other, the other ends of the two adjusting connecting rods are hinged to the adjusting base and the adjusting slider respectively, one end of the supporting rod is hinged to a hinge portion where the two adjusting connecting rods are hinged to each other, the roller is disposed at the other end of the supporting rod, and a wheel groove is formed in the roller.

7. The automated pipe bending line according to claim 3, further comprising a movable lift, the movable lifting part is arranged between the fixed lifting part and the guide die assembly and comprises a transfer block, a rotating shaft, a first deflection connecting rod, a second deflection connecting rod, a lifting telescopic driver and a lifting roller, the bottom of the transfer block is arranged on the frame, the upper part of the transfer block is rotatably provided with the rotating shaft, and two ends of the rotating shaft respectively extend out of the switching block, two ends of the rotating shaft extending out of the switching block are respectively and fixedly connected with the first deflection connecting rod and the second deflection connecting rod, meanwhile, the lifting telescopic driver is arranged on the frame, a telescopic shaft of the lifting telescopic driver is hinged with one end of the first deflection connecting rod deviating from the connecting shaft, and one end of the second deflection connecting rod, which is deviated from the rotating shaft and connected with the rotating shaft, is fixedly connected with the shaft lever of the lifting roller.

8. The automatic pipe bending production line according to claim 1, wherein the die clamping assembly comprises a die clamping seat, a die clamping slide rail, a die clamping slide plate, a die clamping module, a first die clamping link, a second die clamping link and a die clamping telescopic driver, the upper end and the lower end of one side of the die clamping seat are respectively fixedly mounted at the upper end and the lower end of the pipe bending shaft, the die clamping slide rail is arranged on the die clamping seat along the radial direction of the pipe bending shaft, the die clamping slide plate is slidably arranged on the die clamping slide rail, the die clamping module is mounted on the die clamping slide plate and extends towards the pipe bending wheel die from one side thereof, one end of the first die clamping link is hinged with one end of the second die clamping link, the other end of the first die clamping link is hinged to the die clamping seat, the other end of the second die clamping link is hinged to the die clamping slide plate, and simultaneously, the die clamping telescopic driver is arranged on the die clamping seat, and a telescopic shaft of the die clamping telescopic driver is hinged with a hinged part where the first die clamping connecting rod and the second die clamping connecting rod are hinged with each other.

9. The automatic pipe bending line according to claim 1, wherein the guide die assembly includes an abutment portion and a follower portion, and,

the abutting part comprises a guide die holder, a guide die slide rail, a guide die slide plate, a first guide die connecting rod, a second guide die connecting rod and a guide die telescopic driver, one side of the guide die holder is fixedly arranged on the rack, the guide die slide rail is arranged on the guide die holder along the radial direction of the bent tube shaft, the guide die slide plate is arranged on the guide die slide rail in a sliding manner, one end of the first guide die connecting rod is hinged with one end of the second guide die connecting rod, the other end of the first guide die connecting rod is hinged on the guide die holder, the other end of the second guide die connecting rod is hinged on the guide die slide plate, and meanwhile, the guide die telescopic driver is arranged on the guide die holder and the telescopic shaft of the guide die telescopic driver is hinged with the hinged part where the first guide die connecting rod and the second guide die connecting rod are hinged with each other;

the following part includes the mounting panel, follows the slide rail, follows the slide, supports tight piece and straight line and follows the attenuator, the mounting panel install in on the guide die slide, the mounting panel has one and follows the curb plate that return bend axle tangential was arranged, follow the slide rail along the tangential of return bend axle set up in on the curb plate, follow the slide and locate follow on the slide rail, the piece that supports set up in follow on the slide and towards return bend wheel mould extends, the straight line follow the attenuator set up in follow on the slide and with follow the slide and be connected.

10. The automatic pipe bending production line according to claim 1, wherein a gear and a toothed belt are arranged between the pipe bending telescopic driver and the pipe bending shaft, the gear is fixedly mounted on the pipe bending shaft, the gear is also arranged on the rack at the end away from the pipe bending shaft, the toothed belt is wound on the two gears, the toothed belt is an open toothed belt, the pipe bending telescopic driver is a double-end linear driver, and two ends of the toothed belt are respectively connected to telescopic heads at two ends of the pipe bending telescopic driver.

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