A pipe bending device

Abstract

The application discloses a pipe bending device, which comprises a frame, a pipe taking mechanism, a supporting frame and a driving mechanism. The frame is provided with a first position and a second position. The pipe taking mechanism is slidably arranged on the frame and located between the first position and the second position. The supporting frame is slidably arranged on the frame and located between the pipe taking mechanism and the second position. The supporting frame is provided with a supporting hole for a prefabricated pipe to pass through. The supporting frame is connected with the pipe taking mechanism. The driving mechanism is arranged on the frame and connected with the pipe taking mechanism. The driving mechanism is used for driving the pipe taking mechanism to slide back and forth between the first position and the second position. When the pipe taking mechanism slides towards the first position, the pipe taking mechanism drives the supporting frame to slide to be spaced apart from the pipe taking mechanism. When the pipe taking mechanism slides towards the second position, the pipe taking mechanism drives the supporting frame to slide to be stacked with the pipe taking mechanism. Through the above structure, the pipe bending device does not need to be correspondingly designed with an avoiding mechanism, so that the production cost of the pipe bending device can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of U-tube manufacturing, in particular to a pipe bending device. BACKGROUND

[0002] In the prior art, some pipe bending devices include a pipe taking mechanism, a driving mechanism, a support frame and an avoiding mechanism. The support frame is located on the moving path of the pipe taking mechanism. When the driving mechanism drives the pipe taking mechanism to move and deliver a prefabricated pipe, in order to avoid the support frame blocking the movement of the pipe taking mechanism, the avoiding mechanism needs to drive the support frame to move downward to avoid the pipe taking mechanism. The setting of the avoiding mechanism increases the production cost of the pipe bending device. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a pipe bending device which can reduce production cost.

[0004] The pipe bending device according to the embodiment of the present application is used for bending a prefabricated pipe, which includes a rack, a pipe taking mechanism, a support frame and a driving mechanism. The rack is provided with a first position and a second position. The pipe taking mechanism is slidably arranged on the rack and located between the first position and the second position. The support frame is slidably arranged on the rack and located between the pipe taking mechanism and the second position. The support frame is provided with a support hole for the prefabricated pipe to pass through. The support frame is connected with the pipe taking mechanism. The driving mechanism is arranged on the rack and connected with the pipe taking mechanism. The driving mechanism is used for driving the pipe taking mechanism to slide back and forth between the first position and the second position. When the pipe taking mechanism slides towards the first position, the pipe taking mechanism drives the support frame to slide to be spaced apart from it. When the pipe taking mechanism slides towards the second position, the pipe taking mechanism drives the support frame to slide to be stacked with it.

[0005] The pipe bending device according to the embodiment of the present application has at least the following beneficial effects. Through the above structure, the support frame is located between the pipe taking mechanism and the second position. The pipe taking mechanism can drive the support frame to slide. When the driving mechanism drives the pipe taking mechanism to move and deliver the prefabricated pipe, the support frame will not block the movement of the pipe taking mechanism. Therefore, it is not necessary to design the avoiding mechanism, thereby reducing the production cost of the pipe bending device.

[0006] According to some embodiments of the present application, the support frames are arranged in at least two, the at least two support frames are arranged in sequence side by side, two adjacent support frames are connected, the support frame closest to the first position is connected with the pipe taking mechanism, when the pipe taking mechanism slides towards the first position, the pipe taking mechanism drives the at least two support frames to slide so that the two adjacent support frames are arranged in a spaced manner, when the pipe taking mechanism slides towards the second position, the pipe taking mechanism drives the at least two support frames to slide so that the pipe taking mechanism and the at least two support frames are arranged in a stacked manner.

[0007] According to some embodiments of the present application, the two adjacent support frames are respectively named as a first frame body and a second frame body, the first frame body is provided with a first connecting rod, the second frame body is provided with a first connecting hole, the first connecting rod is slidably arranged in the first connecting hole, the first connecting rod is provided with a first fixing block, and the first fixing block is located on a side of the second frame body away from the first frame body.

[0008] According to some embodiments of the present application, the pipe taking mechanism is provided with a second connecting rod, the support frame closest to the first position is provided with a second connecting hole, the second connecting rod is slidably arranged in the second connecting hole, and the second connecting rod is provided with a second fixing block, and the second fixing block is located on a side of the support frame away from the pipe taking mechanism.

[0009] According to some embodiments of the present application, the pipe taking mechanism comprises a pipe taking frame and a first pipe clamping assembly, the pipe taking frame is slidably arranged in the rack, the pipe taking frame is provided with the second connecting rod, the pipe taking frame is connected with the driving mechanism, the first pipe clamping assembly is arranged in the pipe taking frame, the first pipe clamping assembly is provided with a first channel for the prefabricated pipe to pass through, and the first pipe clamping assembly can adjust the cross-sectional area of the first channel to clamp the prefabricated pipe.

[0010] According to some embodiments of the present application, the pipe taking frame is provided with a pipe cutting mechanism, and the pipe cutting mechanism is used for cutting the prefabricated pipe.

[0011] According to some embodiments of the present application, the driving mechanism comprises a transmission rod, a connecting block and a first driving member, the transmission rod is rotatably arranged in the rack, the connecting block is arranged in the pipe taking mechanism, the connecting block is threadedly connected with the transmission rod, the first driving member is arranged in the rack, the first driving member is in transmission connection with the transmission rod, and the first driving member is used for driving the transmission rod to rotate so as to drive the pipe taking mechanism to slide through the connecting block.

[0012] According to some embodiments of the present invention, a pipe bending mechanism is provided on the frame, the pipe bending mechanism is located at the first position, the pipe bending mechanism is used to receive the prefabricated pipe delivered by the pipe taking mechanism, and is used to bend the prefabricated pipe into a U-shaped pipe.

[0013] According to some embodiments of the present invention, the tube bending mechanism is provided with a material returning mechanism, and the material returning mechanism is used to drive the bent U-shaped tube to separate from the tube bending mechanism.

[0014] According to some embodiments of the present invention, a straightening and rounding mechanism is provided on the frame, and the straightening and rounding mechanism is located at the second position, and the straightening and rounding mechanism is used to straighten and round the prefabricated pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0016] Figure 1 This is a structural diagram of an embodiment of a pipe bending device of the present invention;

[0017] Figure 2 for Figure 1 A partial enlarged view of the X portion shown in FIG;

[0018] Figure 3 for Figure 1 A partial structural diagram of the tube removal mechanism after sliding toward the second position shown in FIG;

[0019] Figure 4 for Figure 3 Partial exploded view of the pipe removal mechanism, pipe cutting mechanism and detection mechanism shown in FIG;

[0020] Figure 5 for Figure 4 The structural diagram of the roller and sleeve shown in FIG;

[0021] Figure 6 for Figure 5 The structural diagram of the sleeve shown in ;

[0022] Figure 7 for Figure 1 The structural diagram of the pipe bending mechanism shown in ;

[0023] Figure 8 for Figure 7 The structural diagram of the pipe bending mechanism shown in FIG after removing some components;

[0024] Figure 9 for Figure 7 A cross-sectional view of the bending die shown in ;

[0025] Figure 10 for Figure 7Structure diagram of the sliding member shown in FIG. 1;

[0026] Figure 11 As shown in FIG. 1, the straightening and aligning mechanism removes the part member; Figure 1 Structure diagram of the straightening and aligning mechanism after removing the part member shown in FIG. 2;

[0027] Figure 12 As shown in FIG. 2, the straightening and aligning mechanism removes the part member; Figure 1 Structure diagram of the material moving mechanism shown in FIG. 3.

[0028] Reference signs:

[0029] Rack 100, second pipe clamping assembly 110, second clamping plate 111, second bottom plate 112, tenth driving member 113, eleventh rotating wheel 120;

[0030] Pipe taking mechanism 200, pipe taking rack 210, second connecting rod 211, second fixed block 211A, second anti-collision block 212, first pipe clamping assembly 220, first bottom plate 221, second driving member 222, first clamping plate 223, detection mechanism 230, detection member 231;

[0031] Supporting rack 300, supporting hole 310, first anti-collision block 320;

[0032] Driving mechanism 400, transmission rod 410;

[0033] Pipe cutting mechanism 500, rotating roller 510, blade assembly 511, bearing assembly 512, strip rod 513, sleeve 520, guide groove 521, connecting groove 522, fourth driving member 530, pushing block 531;

[0034] Pipe bending mechanism 600, bending mold 610, mold body 611, bottom clamping plate 612, fifth driving member 613, overturning rack 620, abutting mold 621, receiving core rod 622, guide cylinder 623, sliding member 624, ninth driving member 625, first rotating wheel 631, second rotating wheel 632, sixth driving member 633, third driving assembly 640, connecting member 641, guide inclined hole 641A, middle connecting member 642, protruding block 642A, eighth driving member 643;

[0035] Material returning mechanism 700, sliding member 710, abutting cylinder 711, extension 712, clamping block 713, second driving assembly 720, seventh driving member 721;

[0036] Straightening and aligning mechanism 800, first rotating wheel assembly 810, fifth rotating wheel 811, sixth rotating wheel 812, second rotating wheel assembly 820, seventh rotating wheel 821, eighth rotating wheel 822;

[0037] Material moving mechanism 900, eleventh driving member 910, twelfth rotating wheel 911, third conveying belt 920;

[0038] The first position s1, the second position s2, the first passage t1, the third passage t3, the fourth passage t4, the fifth passage t5, and the sixth passage t6.

[0039] The first frame body a, the first connecting rod a1, and the first fixed block a11. DETAILED DESCRIPTION

[0040] This part will describe the specific embodiments of the present application in detail. The preferred embodiments of the present application are shown in the accompanying drawings, which serve to supplement the description in the text part of the specification and enable people to intuitively and visually understand each technical feature and the overall technical scheme of the present application, but cannot be understood as a limitation on the protection scope of the present application.

[0041] In the description of the present application, if the first, second, third, fourth, fifth, etc. are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0042] In the description of the present application, it is to be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0043] In the present application, unless otherwise explicitly limited, the words "set", "install", "connect", etc. should be understood broadly, for example, can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or detachably connected, or integrally formed; can be mechanically connected; can be the internal communication of two elements or the interaction relationship of two elements. The person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0044] Reference Figures 1 to 12 The pipe bending device according to an embodiment of the present application is used for bending a prefabricated pipe, and includes a rack 100, a pipe taking mechanism 200, a supporting frame 300, and a driving mechanism 400.

[0045] The rack 100 is provided with a first position s1 and a second position s2, the pipe taking mechanism 200 is slidably arranged on the rack 100 and located between the first position s1 and the second position s2, the support frame 300 is slidably arranged on the rack 100 and located between the pipe taking mechanism 200 and the second position s2, the support frame 300 is provided with a support hole 310 for the prefabricated pipe to pass through, the support frame 300 is connected with the pipe taking mechanism 200, and the driving mechanism 400 is arranged on the rack 100 and connected with the pipe taking mechanism 200, and the driving mechanism 400 is used to drive the pipe taking mechanism 200 to slide back and forth between the first position s1 and the second position s2.

[0046] When the pipe taking mechanism 200 slides towards the first position s1, the pipe taking mechanism 200 drives the support frame 300 to slide to be spaced apart from each other.

[0047] When the pipe taking mechanism 200 slides towards the second position s2, the pipe taking mechanism 200 drives the support frame 300 to slide to be stacked.

[0048] Through the above structure, the support frame 300 is located between the pipe taking mechanism 200 and the second position s2, the pipe taking mechanism 200 can drive the support frame 300 to slide, when the driving mechanism 400 drives the pipe taking mechanism 200 to move the prefabricated pipe, the support frame 300 will not block the movement of the pipe taking mechanism 200, thus, it is not necessary to design a corresponding avoidance mechanism, thereby the production cost of the pipe bending device can be reduced.

[0049] In the embodiment, referring to Figure 1 and Figure 3 , the support frame 300 is provided with four, the four support frames 300 are arranged side by side in sequence, the adjacent two support frames 300 are connected, and the support frame 300 closest to the first position s1 is connected with the pipe taking mechanism 200.

[0050] When the pipe taking mechanism 200 slides towards the first position s1, the pipe taking mechanism 200 drives the four support frames 300 to slide, so that the adjacent two support frames 300 are spaced apart from each other.

[0051] It can be understood that the pipe taking mechanism 200 is also spaced apart from the support frame 300 closest to the first position s1.

[0052] When the pipe taking mechanism 200 slides towards the second position s2, the pipe taking mechanism 200 drives the four support frames 300 to slide, so that the pipe taking mechanism 200 and the four support frames 300 are sequentially stacked.

[0053] In some embodiments, the support frame 300 can be provided with two, three or the like.

[0054] The adjacent two support frames 300 are connected, and specifically, referring to Figure 1, two adjacent support frames 300 are respectively named as a first frame body a and a second frame body b, the first frame body a and the second frame body b are sequentially arranged in a direction away from the first position s1, the first frame body a is provided with a first connecting rod a1, the second frame body b is provided with a first connecting hole (not marked in the figure), the first connecting rod a1 is slidably arranged in the first connecting hole, the first connecting rod a1 is provided with a first fixing block a11, and the first fixing block a11 is located on a side of the second frame body b away from the first frame body a.

[0055] When the first frame body a slides to a certain distance in the direction of the first position s1, the first fixing block a11 slides to abut against the second frame body b, thereby driving the second frame body b to move in the direction of the first position s1.

[0056] When the first frame body a slides to a certain distance in the direction of the second position s2, the first frame body a slides to abut against the second frame body b, thereby driving the second frame body b to move in the direction of the second position s2.

[0057] In some embodiments, the first frame body a and the second frame body b are sequentially arranged in a direction close to the first position s1.

[0058] The support frame 300 closest to the first position s1 is connected with the pipe taking mechanism 200, specifically, referring to Figure 1 and Figure 2 The pipe taking mechanism 200 is provided with a second connecting rod 211, and the support frame 300 closest to the first position s1 is provided with a second connecting hole (not marked in the figure), the second connecting rod 211 is slidably arranged in the second connecting hole, and the second connecting rod 211 is provided with a second fixing block 211A, and the second fixing block 211A is located on a side of the support frame 300 away from the pipe taking mechanism 200.

[0059] When the pipe taking mechanism 200 slides to a certain distance in the direction of the first position s1, the second fixing block 211A slides to abut against the corresponding support frame 300, thereby driving the corresponding support frame 300b to move in the direction of the first position s1.

[0060] When the pipe taking mechanism 200 slides to a certain distance in the direction of the second position s2, the pipe taking mechanism 200 slides to abut against the corresponding support frame 300, thereby driving the corresponding support frame 300 to move in the direction of the second position s2.

[0061] In some embodiments, the support frame 300 closest to the first position s1 is provided with the second connecting rod 211, the pipe taking mechanism 200 is provided with the second connecting hole, the second connecting rod 211 is slidably arranged in the second connecting hole, and the second connecting rod 211 is provided with the second fixing block 211A, and the second fixing block 211A is located on a side of the pipe taking mechanism 200 away from the corresponding support frame 300.

[0062] The pipe taking mechanism 200 comprises a pipe taking frame 210 and a first pipe clamping assembly 220.

[0063] With reference to Figure 1 , Figure 2 and Figure 3 , the pipe taking frame 210 is slidably arranged on the rack 100, the pipe taking frame 210 is provided with the second connecting rod 211, the pipe taking frame 210 is connected with the driving mechanism 400, the first pipe clamping assembly 220 is arranged on the pipe taking frame 210, the first pipe clamping assembly 220 is provided with a first passage t1 for the preformed pipe to pass through, and the first pipe clamping assembly 220 can adjust the cross-sectional area of the first passage t1 to clamp the preformed pipe.

[0064] In the embodiment, with reference to Figure 1 and Figure 3 , the supporting frame 300 is provided with a first anti-collision block 320 on the side close to the second position s2, and the pipe taking frame 210 is provided with a second anti-collision block 212 on both sides close to and away from the second position s2.

[0065] Through the above structure, in the two adjacent supporting frames 300, the first anti-collision block 320 is used to abut against the adjacent supporting frame 300, and the second anti-collision block 212 on the pipe taking frame 210 close to the second position s2 abuts against the supporting frame 300 closest to the first position s1.

[0066] The first pipe clamping assembly 220 comprises a first bottom plate 221, a second driving member 222 and a first clamping plate 223.

[0067] With reference to Figure 3 , the first bottom plate 221 is arranged on the pipe taking frame 210, the first clamping plate 223 is located above the first bottom plate 221, the first clamping plate 223 and the first bottom plate 221 jointly enclose the first passage t1 for the preformed pipe to pass through, the second driving member 222 is arranged on the pipe taking frame 210, the output end of the second driving member 222 is connected with the first clamping plate 223, the second driving member 222 can drive the first clamping plate 223 to move, so that the cross-sectional area of the first passage t1 is reduced, and then the first clamping plate 223 and the first bottom plate 221 jointly clamp the preformed pipe. The second driving member 222 can be provided as a pneumatic cylinder, a hydraulic cylinder or an electric push rod.

[0068] With reference to Figure 3 , Figure 4 , Figure 5 and Figure 6 , the pipe taking frame 210 is provided with a pipe cutting mechanism 500, and the pipe cutting mechanism 500 is used to cut the preformed pipe.

[0069] The pipe cutting mechanism 500 comprises a rotating roller 510, a third driving member (not shown in the figure), a sleeve 520 and a fourth driving member 530.

[0070] With reference to Figure 4 ,Figure 5 and Figure 6 The rotating roller 510 is rotatably arranged on the pipe rack 210, and a third passage t3 for the passage of the preformed pipe is arranged in the rotating roller 510. The end of the rotating roller 510 is provided with a compressible and resilient blade assembly 511. A third driving member is arranged on the pipe rack 210, and the third driving member is connected with the rotating roller 510. The third driving member can drive the rotating roller 510 to rotate. A sleeve 520 is slidably sleeved on the rotating roller 510, and the inner side wall of the sleeve 520 abuts against the blade assembly 511. A fourth driving member 530 is arranged on the pipe rack 210, and the fourth driving member 530 is connected with the sleeve 520. The fourth driving member 530 can drive the sleeve 520 to slide, so as to push the blade assembly 511 to move along the direction close to the central axis of the third passage t3. The third driving member is arranged below the pipe rack 210, and the third driving member is provided as a motor. The third driving member is drivingly connected with the rotating roller 510 through a belt.

[0071] When the third driving member drives the rotating roller 510 to rotate, the fourth driving member 530 drives the sleeve 520 to slide, so as to push the blade assembly 511 to move along the direction close to the central axis of the third passage t3. The blade assembly 511 rotating with the rotating roller 510 abuts against the outer side wall of the preformed pipe, so as to cut the preformed pipe.

[0072] The end of the rotating roller 510 is provided with a compressible and resilient blade assembly 511. The blade assembly 511 comprises a blade, a sliding block and an elastic member.

[0073] With reference to Figure 5 The end of the rotating roller 510 is provided with a mounting cavity. The end of the rotating roller 510 and the end side wall are respectively provided with a guide hole and an opening which communicate with the mounting cavity. The sliding block is slidably arranged in the mounting cavity. The blade is fixedly sleeved on the part of the sliding block exposed to the guide hole, and the blade is located at the end of the rotating roller 510. One end of the elastic member abuts against the cavity wall of the mounting cavity, and the other end of the elastic member abuts against the sliding block. The elastic member can drive the sliding block to move along the direction away from the central axis of the third passage t3, so that the sliding block is partially exposed to the opening and abuts against the inner side wall of the sleeve 520. The elastic member is provided as a spring.

[0074] In the embodiment, the end of the rotating roller 510 is provided with a compressible and resilient bearing assembly 512. The number of the bearing assembly 512 is two, and the two bearing assemblies 512 are uniformly arranged around the central axis of the third passage t3 and the blade assembly 511.

[0075] The compressible and resilient bearing assembly 512 is arranged in the same way as the blade assembly 511, and thus will not be described again here.

[0076] Through the above structure, the integrity of the preformed pipe cutting edge can be improved.

[0077] In some embodiments, the number of bearing assemblies 512 can be three, four, etc.

[0078] The sleeve 520 is slidably sleeved on the rotating roller 510. Specifically, referring to Figure 5 and Figure 6 , the outer side wall of the rotating roller 510 is fixedly provided with a strip 513, the inner side wall of the sleeve 520 is provided with a guide groove 521 matched with the strip 513, and the strip 513 is slidably arranged in the guide groove 521.

[0079] The fourth driving member 530 is connected with the sleeve 520. Specifically, referring to Figure 4 , Figure 5 and Figure 6 , the outer side wall of the sleeve 520 is annularly provided with a connecting groove 522, and the output end of the fourth driving member 530 is fixedly provided with a pushing block 531, the pushing block 531 is provided with a protruding portion, and the protruding portion is located in the connecting groove 522. The fourth driving member 530 can be a pneumatic cylinder, a hydraulic cylinder, an electric push rod, etc.

[0080] Referring to Figure 3 and Figure 4 , the detection mechanism 230 is arranged on the pipe taking frame 210, and the detection mechanism 230 is provided with a fourth passage t4 for the precast pipe to pass through, and the cross-sectional area of the fourth passage t4 is greater than that of the precast pipe.

[0081] Referring to Figure 4 , the detection mechanism 230 comprises a detection member 231 and a circuit module (not shown in the figure).

[0082] The detection member 231 is arranged on the pipe taking frame 210, and the detection member 231 is provided with the fourth passage t4 described above, and the circuit module is arranged on the pipe taking frame 210, and the circuit module is provided with two connection terminals, which are respectively electrically connected with the detection member 231 and the precast pipe.

[0083] When the precast pipe passing through the fourth passage t4 is bent, the bent precast pipe abuts against the detection member 231, and the circuit module loop generates a detection signal.

[0084] The driving mechanism 400 comprises a transmission rod 410, a connecting block (not shown in the figure) and a first driving member (not shown in the figure).

[0085] Referring to Figure 1 , the transmission rod 410 is rotatably arranged on the rack 100, the connecting block is arranged on the pipe taking frame 210, the connecting block is threadedly connected with the transmission rod 410, the first driving member is arranged on the rack 100, the first driving member is drivingly connected with the transmission rod 410, and the first driving member is used to drive the transmission rod 410 to rotate, so as to drive the pipe taking frame 210 to slide through the connecting block.

[0086] The first driving member is in transmission connection with the transmission rod 410. Specifically, one end of the transmission rod 410 is fixedly provided with a driven wheel, and the output end of the first driving member is fixedly provided with a driving wheel. The driving wheel and the driven wheel are sleeved with a transmission belt. The first driving member is an electric motor.

[0087] With reference to Figure 1 and Figure 7 , the rack 100 is provided with a pipe bending mechanism 600. The pipe bending mechanism 600 is located at the first position s1. The pipe bending mechanism 600 is used for receiving the prefabricated pipe sent by the pipe taking mechanism 200 and is used for bending the prefabricated pipe into a U-shaped pipe.

[0088] The pipe bending mechanism 600 comprises a bending die 610, a turnover frame 620 and a first driving assembly.

[0089] With reference to Figure 1 , Figure 7 and Figure 8 , the bending die 610 is arranged on the rack 100. The turnover frame 620 is arranged on the rack 100 in a rotatable manner. The turnover frame 620 is provided with a core rod receiving portion 622 and a die 621. The core rod receiving portion 622 can receive the prefabricated pipe sent by the pipe taking mechanism 200. The first driving assembly is arranged on the rack 100. The first driving assembly is connected with the turnover frame 620. The first driving assembly can drive the turnover frame 620 to turn over, so that the prefabricated pipe on the core rod receiving portion 622 is bent to the bending die 610 by the die 621.

[0090] It should be noted that the core rod receiving portion 622 can receive the prefabricated pipe sent by the pipe taking mechanism 200, that is, the prefabricated pipe sent by the pipe taking mechanism 200 can be sleeved on the core rod receiving portion 622.

[0091] The bending die 610 comprises a die body 611, a bottom clamping plate 612 and a fifth driving member 613.

[0092] With reference to Figure 7 and Figure 9 , the die body 611 is arranged on the rack 100. One end of the die body 611 close to the die 621 is provided with a U-shaped arc groove. The fifth driving member 613 is arranged on the rack 100. The bottom clamping plate 612 is located below the die body 611. A fifth channel t5 for the prefabricated pipe to pass through is formed between the bottom clamping plate 612 and the die body 611. The fifth channel t5 is in communication with the U-shaped arc groove. The output end of the fifth driving member 613 is connected with the bottom clamping plate 612. When the prefabricated pipe is bent, the fifth driving member 613 can drive the bottom clamping plate 612 to move upward, so that the cross-sectional area of the fifth channel t5 is reduced, and then the bottom clamping plate 612 and the die body 611 jointly clamp the prefabricated pipe. The fifth driving member 613 can be a pneumatic cylinder, a hydraulic cylinder or an electric push rod.

[0093] The preformed pipe on the receiving core rod 622 is bent along the U-shaped arc groove to the mold body 611 under the action of the mold 621, and then a U-shaped pipe is formed.

[0094] The first driving assembly comprises a first rotating wheel 631, a second rotating wheel 632 and a sixth driving member 633.

[0095] With reference to Figure 8 , the turnover frame 620 is rotatably connected to the rack 100 through a rotating shaft, the second rotating wheel 632 is rotatably arranged on the rack 100, the first rotating wheel 631 is sleeved on the rotating shaft, the first rotating wheel 631 and the second rotating wheel 632 are sleeved with a second conveying belt (not shown in the figure), the sixth driving member 633 is arranged on the rack 100, the sixth driving member 633 is connected with the second rotating wheel 632, and the sixth driving member 633 can drive the second rotating wheel 632 to rotate, so as to drive the first rotating wheel 631 to rotate through the second conveying belt, and then make the turnover frame 620 turn over.

[0096] In this embodiment, with reference to Figure 7 , the turnover frame 620 is provided with a material returning mechanism 700, which is used to drive the bent U-shaped pipe to separate from the turnover frame 620.

[0097] The material returning mechanism 700 comprises a sliding member 710 and a second driving assembly 720.

[0098] With reference to Figure 7 and Figure 10 , the sliding member 710 is slidably arranged on the turnover frame 620, the sliding member 710 is provided with an abutting cylinder 711, the abutting cylinder 711 is sleeved on the receiving core rod 622, the abutting cylinder 711 can abut against the end of the preformed pipe, the second driving assembly 720 is arranged on the turnover frame 620, the second driving assembly 720 is connected with the sliding member 710, and the second driving assembly 720 can drive the sliding member 710 to slide, so as to drive the abutting cylinder 711 to push the U-shaped pipe away from the turnover frame 620.

[0099] In some embodiments, the second driving assembly 720 can drive the sliding member 710 to slide to adjust the position of the abutting cylinder 711, so as to adjust the length of the preformed pipe sleeved on the receiving core rod 622.

[0100] The second driving assembly 720 comprises a third rotating wheel (not shown in the figure), a fourth rotating wheel (not shown in the figure) and a seventh driving member 721.

[0101] With reference to Figure 7The third rotating wheel and the fourth rotating wheel are rotatably arranged on the turnover frame 620, the third rotating wheel and the fourth rotating wheel are sleeved with a second conveying belt, the second conveying belt is fixedly connected with the sliding piece 710, a seventh driving piece 721 is arranged on the turnover frame 620, one of the third rotating wheel and the fourth rotating wheel is fixedly connected with the output end of the seventh driving piece 721, the seventh driving piece 721 can drive the corresponding third rotating wheel or fourth rotating wheel to rotate, so as to drive the second conveying belt to run, and then drive the sliding piece 710 to slide. The seventh driving piece 721 is arranged as an electric motor.

[0102] The second conveying belt is fixedly connected with the sliding piece 710. Specifically, referring to Figure 7 and Figure 10 The sliding piece 710 is provided with an extension part 712 and a clamping block 713, the extension part 712 and the clamping block 713 are provided with a fastener, and the extension part 712 and the clamping block 713 jointly clamp the second conveying belt. The fastener can be a bolt or the like.

[0103] In order to facilitate the sliding abutting of the cylinder 711 to push away the U-shaped pipe made of the turnover frame 620, the turnover frame 620 is provided with a third driving assembly 640, the die holder 621 is movably arranged on the turnover frame 620, the third driving assembly 640 is connected with the die holder 621, and when the die holder 621 is turned to the bending die 610, the third driving assembly 640 can drive the die holder 621 to move away from the bending die 610.

[0104] The die holder 621 is movably arranged on the turnover frame 620. Specifically, referring to Figure 8 The bottom of the die holder 621 is provided with a connecting pipe segment (not shown in the figure), and the turnover frame 620 is provided with a guide cylinder 623 matched with the connecting pipe segment. The connecting pipe segment is telescopically inserted into the guide cylinder 623.

[0105] The third driving assembly 640 includes a connecting piece 641, a middle connecting piece 642 and an eighth driving piece 643.

[0106] Referring to Figure 8 The connecting piece 641 is connected with the die holder 621, and the connecting piece 641 is provided with a guide inclined hole 641A. The middle connecting piece 642 is slidably arranged on the turnover frame 620, and the middle connecting piece 642 is provided with a protruding block 642A matched with the guide inclined hole 641A. The protruding block 642A is located in the guide inclined hole 641A. The eighth driving piece 643 is arranged on the turnover frame 620, and the eighth driving piece 643 is connected with the middle connecting piece 642. The eighth driving piece 643 can drive the middle connecting piece 642 to slide, so as to push the wall of the guide inclined hole 641A, and drive the die holder 621 to move away from the bending die 610. The eighth driving piece 643 can be arranged as a pneumatic cylinder, a hydraulic cylinder, an electric push rod or the like.

[0107] In some embodiments, the third driving assembly 640 can be directly provided as an eighth driving member 643, the eighth driving member 643 is arranged on the turnover frame 620, and an output end of the eighth driving member 643 is connected with the bottom of the back mold 621. When the back mold 621 is turned over to the bending mold 610, the eighth driving member 643 can drive the back mold 621 to move away from the bending mold 610.

[0108] In the embodiment, in order to optimize the work of the U-shaped tube moving away from the turnover frame 620, referring to Figure 7 , a sliding member 624 is slidably arranged on the turnover frame 620, the receiving core rod 622 is slidably arranged on the turnover frame 620, one end of the receiving core rod 622 away from the back mold 621 is fixedly connected with the sliding member 624, and a ninth driving member 625 is fixedly arranged on the turnover frame 620, and an output end of the ninth driving member 625 is connected with the sliding member 624. The ninth driving member 625 can be provided as a pneumatic cylinder, a hydraulic cylinder, an electric push rod or the like.

[0109] When the material removing work is performed, the ninth driving member 625 can drive the sliding member 624 to slide, so as to drive the receiving core rod 622 to move away from the U-shaped tube, thereby optimizing the work of the U-shaped tube moving away from the turnover frame 620.

[0110] Referring to Figure 1 and Figure 11 , the rack 100 is provided with a straightening and rounding mechanism 800, the straightening and rounding mechanism 800 is located at the second position s2, and the straightening and rounding mechanism 800 is used for straightening and rounding the prefabricated pipe.

[0111] The straightening and rounding mechanism 800 comprises a first rotating wheel assembly 810 and a second rotating wheel assembly 820.

[0112] The first rotating wheel assembly 810 and the second rotating wheel assembly 820 are both arranged on the rack 100, the first rotating wheel assembly 810 can straighten and round the left and right outer side walls of the prefabricated pipe, and the second rotating wheel assembly 820 can straighten and round the upper and lower outer side walls of the prefabricated pipe.

[0113] Referring to Figure 11 , the first rotating wheel assembly 810 comprises a fifth rotating wheel 811 and a sixth rotating wheel 812, the fifth rotating wheel 811 and the sixth rotating wheel 812 are both rotatably arranged on the rack 100, and the fifth rotating wheel 811 and the sixth rotating wheel 812 can respectively abut against the left and right outer side walls of the prefabricated pipe.

[0114] Referring to Figure 11 , the second rotating wheel assembly 820 comprises a seventh rotating wheel 821 and an eighth rotating wheel 822, the seventh rotating wheel 821 and the eighth rotating wheel 822 are both rotatably arranged on the rack 100, and the seventh rotating wheel 821 and the eighth rotating wheel 822 can respectively abut against the upper and lower outer side walls of the prefabricated pipe.

[0115] In the embodiment, the second pipe clamping assembly 110 is arranged on the rack 100, and the second pipe clamping assembly 110 is arranged on the rack 100. During the movement of the pipe taking mechanism 200, the second pipe clamping assembly 110 can prevent the straightened and rounded prefabricated pipe from returning.

[0116] The second pipe clamping assembly 110 comprises a second clamping plate 111, a second bottom plate 112, and a tenth driving member 113.

[0117] Referring to Figure 11 , the second bottom plate 112 is arranged on the rack 100, the second clamping plate 111 is located above the second bottom plate 112, the second clamping plate 111 and the second bottom plate 112 jointly form a sixth passage t6 for the prefabricated pipe to pass through, the tenth driving member 113 is arranged on the rack 100, the output end of the tenth driving member 113 is connected with the second clamping plate 111, the tenth driving member 113 can drive the second clamping plate 111 to move, so that the cross-sectional area of the sixth passage t6 is reduced, and then the second clamping plate 111 and the second bottom plate 112 jointly clamp the prefabricated pipe. The tenth driving member 113 can be a pneumatic cylinder, a hydraulic cylinder, an electric push rod, or the like.

[0118] Referring to Figure 1 and Figure 12 , the rack 100 is provided with a material moving mechanism 900, which is used to receive the U-shaped pipe separated from the pipe bending mechanism 600 and move the U-shaped pipe.

[0119] The material moving mechanism 900 comprises a ninth rotating wheel (not shown in the figure), a tenth rotating wheel (not shown in the figure), and an eleventh driving member 910.

[0120] Referring to Figure 12 , the ninth rotating wheel and the tenth rotating wheel are rotatably arranged on the rack 100, the ninth rotating wheel and the tenth rotating wheel are sleeved with a third conveying belt 920, the belt surface of the third conveying belt 920 is used to receive the U-shaped pipe separated from the pipe bending mechanism 600, the third conveying belt 920 is connected with the eleventh driving member 910, and the eleventh driving member 910 is used to drive the third conveying belt 920 to operate, so as to move the U-shaped pipe on the third conveying belt 920.

[0121] The third conveying belt 920 is connected with the eleventh driving member 910. Specifically, referring to Figure 12 , the rack 100 is rotatably connected with an eleventh rotating wheel 120, the output end of the eleventh driving member 910 is provided with a twelfth rotating wheel 911, and the wheel surface of the twelfth rotating wheel 911 and the belt surface of the third conveying belt 920 are in line contact with the wheel surface of the eleventh rotating wheel 120.

[0122] Of course, the present application is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present application, and such equivalent modifications and substitutions are included in the scope defined by the claims of the present application.

Claims

1. A pipe bending apparatus for bending a preformed pipe, characterised in that: The machine frame (100) is provided with a first position (s1) and a second position (s2); The pipe taking mechanism (200) is slidably arranged in the machine frame (100) and located between the first position (s1) and the second position (s2); The support frame (300) is slidably arranged in the machine frame (100) and located between the pipe taking mechanism (200) and the second position (s2), the support frame (300) is provided with a support hole (310) for the prefabricated pipe to pass through, and the support frame (300) is connected with the pipe taking mechanism (200); The driving mechanism (400) is arranged in the machine frame (100), the driving mechanism (400) is connected with the pipe taking mechanism (200), and the driving mechanism (400) is used for driving the pipe taking mechanism (200) to slide back and forth between the first position (s1) and the second position (s2), wherein When the pipe taking mechanism (200) slides towards the first position (s1), the pipe taking mechanism (200) drives the support frame (300) to slide to be spaced apart from each other, When the pipe taking mechanism (200) slides towards the second position (s2), the pipe taking mechanism (200) drives the support frame (300) to slide to be stacked with each other; The support frame (300) is provided as at least two, the at least two support frames (300) are arranged in sequence and side by side, the adjacent two support frames (300) are connected, and the support frame (300) closest to the first position (s1) is connected with the pipe taking mechanism (200), wherein When the pipe taking mechanism (200) slides towards the first position (s1), the pipe taking mechanism (200) drives the at least two support frames (300) to slide to be spaced apart from each other, When the pipe taking mechanism (200) slides towards the second position (s2), the pipe taking mechanism (200) drives the at least two support frames (300) to slide to be stacked with each other in sequence; The adjacent two support frames (300) are respectively named as a first frame body (a) and a second frame body (b), the first frame body (a) is provided with a first connecting rod (a1), the second frame body (b) is provided with a first connecting hole, the first connecting rod (a1) is slidably arranged in the first connecting hole, the first connecting rod (a1) is provided with a first fixing block (a11), and the first fixing block (a11) is located on a side of the second frame body (b) away from the first frame body (a); The pipe taking mechanism (200) is provided with a second connecting rod (211), the support frame (300) closest to the first position (s1) is provided with a second connecting hole, the second connecting rod (211) is slidably arranged in the second connecting hole, and the second connecting rod (211) is provided with a second fixing block (211A).

2. The pipe bending device according to claim 1, characterized in that: The pipe taking mechanism (200) comprises: a pipe taking frame (210) slidably arranged in the rack (100), the pipe taking frame (210) is provided with the second connecting rod (211), and the pipe taking frame (210) is connected with the driving mechanism (400); a first pipe clamping assembly (220) arranged in the pipe taking frame (210), the first pipe clamping assembly (220) is provided with a first channel (t1) for the prefabricated pipe to pass through, and the first pipe clamping assembly (220) can adjust the cross-sectional area of the first channel (t1) to clamp the prefabricated pipe.

3. The pipe bending device according to claim 2, characterized in that: The pipe taking frame (210) is provided with a pipe cutting mechanism (500), and the pipe cutting mechanism (500) is used for cutting the prefabricated pipe.

4. The pipe bending device according to claim 1, characterized in that: The driving mechanism (400) comprises: a transmission rod (410) rotatably arranged in the rack (100); a connecting block arranged in the pipe taking mechanism (200), the connecting block is threadedly connected with the transmission rod (410); a first driving member arranged in the rack (100), the first driving member is drivingly connected with the transmission rod (410), and the first driving member is used for driving the transmission rod (410) to rotate, so as to drive the pipe taking mechanism (200) to slide through the connecting block.

5. The pipe bending device according to claim 1, characterized in that: The rack (100) is provided with a pipe bending mechanism (600), the pipe bending mechanism (600) is located at the first position (s1), the pipe bending mechanism (600) is used for receiving the prefabricated pipe sent by the pipe taking mechanism (200), and the pipe bending mechanism (600) is used for bending the prefabricated pipe into a U-shaped pipe.

6. The pipe bending device according to claim 5, characterized in that: The pipe bending mechanism (600) is provided with a material returning mechanism (700), and the material returning mechanism (700) is used for driving the U-shaped pipe after bending to separate from the pipe bending mechanism (600).

7. The pipe bending device according to claim 1, characterized in that: The rack (100) is provided with a straightening and rounding mechanism (800), the straightening and rounding mechanism (800) is located at the second position (s2), and the straightening and rounding mechanism (800) is used for straightening and rounding the prefabricated pipe.

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