Pipe bending machine for metal pipe manufacturing

Abstract

The pipe bending machine for metal pipe manufacturing comprises a workbench, a baffle is fixedly connected to the lower portion of the workbench, the baffle is placed on the ground and used for supporting the workbench, a through hole is formed in the surface of the workbench, and a bending assembly is arranged in the through hole of the workbench. The bending assembly is used for bending a metal pipe to a required angle, a clamping assembly is fixedly connected to the upper portion of the workbench and used for fixing the position of the metal pipe to be machined, and a feeding assembly is slidably connected to the upper portion of the workbench and used for feeding the metal pipe to be machined. The feeding assembly is used for fixing the position of the tail end of a to-be-machined metal pipe and conveying the part, needing to be bent, of the to-be-machined metal pipe to the bending assembly, a supporting assembly is fixed in the feeding assembly, and the supporting assembly is used for supporting the inner wall of the metal pipe to prevent the section of the metal pipe from deforming when the metal pipe is bent. The device solves the problem that a traditional pipe bending machine can only bend a metal pipe with a single section diameter.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing equipment, in particular to a pipe bending machine for manufacturing metal pipes. Background Art

[0002] In the metal processing industry, pipe bending machines are indispensable equipment for manufacturing metal pipes of various shapes. Traditional pipe bending machines are often simple in design, with low automation, complicated operation and low efficiency. With the development of science and technology, the requirements for the accuracy, efficiency and automation of pipe bending machines are getting higher and higher.

[0003] When a traditional pipe bending machine is working, it is usually necessary to place the metal pipe between the molds, and then use mechanical or hydraulic methods to make the mold apply pressure to the metal pipe to achieve the bending of the metal pipe. However, there are some problems with this working method. First, the replacement and adjustment of the mold is relatively complicated. Different molds are required for metal pipes of different diameters and wall thicknesses, which increases production costs and operational difficulties. Secondly, during the bending process of traditional pipe bending machines, metal pipes are prone to deformation, wrinkling or cross-sectional changes, which affects the quality of the product. In addition, the degree of automation of traditional pipe bending machines is low, and most operations need to be completed manually, which is not only inefficient but also poses safety hazards.

[0004] Therefore, a pipe bending machine for metal pipe manufacturing is provided to solve the problem that the traditional pipe bending machine cannot be changed for metal pipes of different diameters and has a low degree of automation. Summary of the invention

[0005] The object of the present invention is to provide a pipe bending machine for metal pipe manufacturing to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A first aspect of the present invention provides a pipe bending machine for metal pipe manufacturing, comprising a workbench, a baffle fixedly connected to the bottom of the workbench, the baffle placed on the ground to support the workbench;

[0008] A through hole is provided on the surface of the workbench, a bending assembly is arranged in the through hole of the workbench, the bending assembly is used to bend the metal tube to a desired angle, a clamping assembly is fixedly connected above the workbench, the clamping assembly is used to fix the position of the metal tube to be processed, a feeding assembly is slidably connected above the workbench, the feeding assembly is used to fix the position of the tail end of the metal tube to be processed and deliver the part of the metal tube to be processed that needs to be bent to the bending assembly, a supporting assembly is fixed in the feeding assembly, the supporting assembly is used to support the inner wall of the metal tube when the metal tube is bent to prevent the cross section of the metal tube from being deformed;

[0009] The bending assembly comprises a first rotating hole and a second rotating hole, wherein the first rotating hole and the second rotating hole are provided on the surface of the workbench, and a connecting hole is provided on the surface of the workbench, wherein the connecting hole connects the first rotating hole and the second rotating hole;

[0010] An anti-wrinkle plate is provided above the first rotating hole, one end of the anti-wrinkle plate is fixedly connected to the workbench, and the other end of the anti-wrinkle plate is fixedly connected to a support column, and the support column is located in the center of the first rotating hole;

[0011] The first rotating hole is rotatably connected with a bending disk inside, the bending disk is a cylindrical structure, a plurality of limiting holes are opened on the cylinder of the bending disk, the limiting holes are evenly distributed on one half of the cylindrical surface of the bending disk, the limiting holes are arranged along the radial direction of the bending disk, the depth of the limiting holes along the radial direction is less than the radius of the cross section of the bending disk, and the limiting holes penetrate the end face of the bending disk;

[0012] The inside of the rotating hole 2 is rotatably connected with a bending die disc, the bending die disc is a cylindrical structure, and a plurality of storage holes are evenly opened on the cylindrical surface of the bending die disc, the storage holes are arranged along the radial direction of the bending die disc, the depth of the storage holes along the radial direction is less than the radius of the cross section of the bending die disc, the storage hole passes through the end face of the bending die disc, a connecting rod 1 is arranged inside the storage hole, the connecting rod 1 slides inside the storage hole, the top end of the connecting rod 1 is in the same horizontal plane as the workbench, a bending die is fixedly connected above the connecting rod 1, the bending die is above the bending die disc, and the bottom of the connecting rod 1 passes through the storage hole and is exposed to the outside of the bending die disc;

[0013] A rotating disk is fixedly connected to the lower part of the bending disk, a transmission rod 1 is fixedly connected to the lower part of the rotating disk, one end of the transmission rod 1 is fixedly connected to the center of the rotating disk, the other end of the transmission rod 1 is fixedly connected to a motor 1, the motor 1 includes a motor 1 main shaft, the motor 1 main shaft is fixedly connected to the transmission rod 1, a fixed plate is fixedly connected to the lower part of the motor 1, the fixed plate is fixedly connected to the baffle, and by starting the motor 1, the motor 1 main shaft drives the rotating disk and the bending disk to rotate relative to the workbench;

[0014] A plurality of electric push rods are fixedly connected to the lower part of the rotating disk, each of which corresponds to the limiting hole, and the electric push rod comprises a fixed rod and an output rod, the fixed rod is fixedly connected to the rotating disk, a fixed clamp is fixedly connected to the output rod, the fixed clamp is used to fix the pipe bending die, the fixed clamp comprises a clamp and a connecting piece, a pressure sensor is fixedly connected to the connecting piece, the pressure sensor is between the two clamps, and the clamp is assumed to be in an open state in the initial state;

[0015] A transmission rod 2 is fixedly connected to the lower part of the bending mold plate, one end of the transmission rod 2 is fixedly connected to the center of the bending mold plate, and the other end of the transmission rod 2 is fixedly connected to a motor 2, the motor 2 includes a motor 2 main shaft, the motor 2 main shaft is fixedly connected to the transmission rod 2, the motor 2 is fixedly connected to the upper part of the fixed plate, a sliding ring is sleeved on the transmission rod 2, a lifting plate is fixedly connected to the sliding ring, a hydraulic cylinder 1 is fixedly connected to the lower part of the lifting plate, the hydraulic cylinder 1 includes a hydraulic cylinder 1 fixed rod and a hydraulic cylinder 1 output rod, the hydraulic cylinder 1 output rod is fixedly connected to the lower part of the lifting plate, and the hydraulic cylinder 1 fixed rod is fixedly connected to the fixed plate;

[0016] As shown in the figure, in some embodiments, a plurality of slide rails are fixed below the bending tube die plate, one end of each of the slide rails is in contact with the transmission rod 2, the other end of each of the slide rails is in contact with the storage hole, a slider is slidably connected to the slide rail, the upper part of the slider is slidably connected to the slide rail, a connecting block 1 is fixedly connected to the lower part of the slider, a rotating rod is rotatably connected to the upper part of the connecting block 1, one end of the rotating rod is rotatably connected to the connecting block 1, the other end of the rotating rod is rotatably connected to the sliding ring, the sliding ring includes a connecting block 2, and the connecting block 2 is rotatably connected to the rotating rod;

[0017] A push rod is fixed to the side of the slider, and the push rod faces the direction of the storage hole. A spring is sleeved on the outside of the push rod, one end of the spring is fixedly connected to the slider, and the other end of the spring is fixedly connected to a mounting plate. A through hole is opened on the surface of the mounting plate, and the push rod slides inside the through hole of the mounting plate. One side of the mounting plate is fixedly connected to the spring, and the other end of the mounting plate is fixedly connected to a conveying clamp. The conveying clamp has the same structure as the fixed clamp and is not described in detail.

[0018] The present invention further illustrates that the support assembly includes a support rod, one end of the support rod is fixedly connected to a fixed block, a side of the fixed block is provided with a fixing hole, the fixing hole is used to fix the position of the support assembly, the other end of the support rod is fixedly connected to a support block, the support block is at the center of the cross-section of the support rod, a sliding rod is fixedly connected to the center above the support block, a shaft sleeve is provided on the outer side of the sliding rod, the shaft sleeve slides on the sliding rod, a hydraulic rod is fixedly connected above the support block, the hydraulic rod includes a hydraulic rod fixing rod and a hydraulic rod telescopic rod, the hydraulic rod fixing rod is fixedly linked to the support block, and the hydraulic rod telescopic rod is fixedly connected to the shaft sleeve.

[0019] The present invention further illustrates that a plurality of connecting plates 1 are evenly fixed on the outer surface of the sleeve, a rotating hole 3 and a rotating hole 4 are provided on the surface of the connecting plate 1, the rotating hole 3 is above the rotating hole 4, the rotating holes 4 are rotatably connected to connecting rod 2, one end of the connecting rod 2 is rotatably connected to the connecting plate 1, the other end of the connecting rod 2 is rotatably connected to the connecting plate 2, and a rotating hole 5 is provided at the connection between the connecting rod 2 and the connecting plate 2.

[0020] The present invention further illustrates that the rotating hole three is rotatably connected to a connecting rod three, one end of the connecting rod three is rotatably connected to the connecting plate one, the other end of the connecting rod three is rotatably connected to a connecting rod four, one end of the connecting rod four is rotatably connected to the connecting rod three, the other end of the connecting rod four is fixedly rotatably connected to the connecting plate two, a rotating hole six is ​​provided at the rotatable connection between the connecting rod four and the connecting plate two, the rotating hole six is ​​above the rotating hole five, a support plate is fixedly connected to the connecting plate two, and the support plate is used to support the inner wall of the metal tube at the bend.

[0021] The present invention further describes that a spherical joint 1 is fixedly connected to the top end of the sliding rod, the spherical joint 1 has an outer spherical shell and a circular concave hole is opened on the surface, a spherical joint 2 is arranged in the center concave hole of the spherical joint 1, and the surface of the spherical joint 2 is fixedly connected to the other support block, thereby reciprocating until the required length is reached.

[0022] The present invention further illustrates that the clamping assembly includes a hydraulic cylinder 2, the two hydraulic cylinders 2 are symmetrical relative to the anti-wrinkle plate, the hydraulic cylinder 2 includes a hydraulic cylinder 2 fixed rod and a hydraulic cylinder 2 output rod, the hydraulic cylinder 2 fixed rod is fixedly connected to the workbench, the hydraulic cylinder 2 output rod is fixedly connected to a clamping plate, and the clamping plate is used to clamp the metal pipe.

[0023] The second aspect of the present invention provides a pipe bending method for a metal manufacturing pipe bending machine, comprising: sliding the feed assembly according to the length of the metal pipe and the required distance from the bend to the end face, placing the metal pipe on the workbench from the top of the support assembly and including the support assembly, aligning one end face of the metal pipe with the feed assembly, starting the hydraulic cylinder 2, and fixing the metal pipe with the two clamping plates, and adjusting the support plate to contact the inner wall of the metal pipe by starting the hydraulic rod, and when the support plate contacts the inner wall of the metal pipe, the hydraulic rod stops.

[0024] Furthermore, when the metal pipe is fixed above the workbench, the metal pipe is between the tube bending die plate and the bending plate and contacts the surface of the anti-wrinkle plate. By starting the electric push rod, the telescopic length of the output rod of the electric push rod is adjusted according to the cross-sectional diameter of the metal pipe. By starting the motor 1 to drive the bending plate to rotate, during the rotation of the bending plate, the hydraulic cylinder 1 is started, and the output rod of the hydraulic cylinder 1 drives the lifting plate to rise. The lifting plate drives the sliding ring to slide upward relative to the transmission rod 2. The sliding ring drives the rotating rod to rotate relative to the sliding ring. The rotating rod drives the slider and the spring to slide on the slide rail. The conveying clamp clamps the connecting rod 1 in the initial state, and the conveying clamp drives the tube bending die to slide. When the When the storage hole is aligned with the connecting hole, the connecting hole is also aligned with the limiting hole, and the tube bending die is conveyed to the bending disk. When the force sensor on the fixed clamp feels the pressure, the clamp of the fixed clamp clamps the connecting rod 1. When the force sensor on the conveying clamp feels the pressure increase, the clamp of the conveying clamp relaxes, and the output rod of the hydraulic cylinder 1 drives the sliding ring to slide downward, and the conveying clamp returns to its initial position. The tube bending die on the bending disk rotates relative to the support column as the bending disk rotates. As the tube bending die on the bending disk rotates, one side of the metal tube is bent by the support column, and the other side of the metal tube is bent as the tube bending die rotates. When the metal tube is bent to a suitable angle, the motor stops.

[0025] Furthermore, when the work is completed, the motor 1 and the motor 2 of the control machine are reversed, and the pipe bending die can be completely retracted onto the pipe bending die plate.

[0026] Compared with the prior art, the beneficial effects achieved by the present invention are: the present invention adjusts and bends metal tubes with different cross-sectional radii through the bending assembly, ensures that the metal tube will not be deformed during the bending process through the support assembly, and adapts to metal tubes with different wall thicknesses and different cross-sectional diameters, solving the problem that traditional tube bending machines can only bend metal tubes with a single cross-sectional diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 is a schematic diagram of the overall front structure of an embodiment of the present invention;

[0029] Figure 2 The embodiment of the present invention Figure 1 A schematic diagram of the enlarged structure of area;

[0030] Figure 3 is a schematic diagram of the internal structure of an embodiment of the present invention;

[0031] Figure 4 The embodiment of the present invention Figure 3 A schematic diagram of the enlarged structure of area B;

[0032] Figure 5 The embodiment of the present invention Figure 3 Schematic diagram of the enlarged structure of area C;

[0033] Figure 6 is a schematic structural diagram of a slider assembly according to an embodiment of the present invention;

[0034] Figure 7 is a schematic diagram of the structure of a support assembly according to an embodiment of the present invention;

[0035] Figure 8 is a schematic structural diagram of a clamping assembly according to an embodiment of the present invention;

[0036] In the figure: 1. workbench; 2. baffle; 3. feed assembly;

[0037] 4. Support assembly; 401. Support rod; 402. Fixed block; 403. Fixed hole; 404. Support block; 405. Sliding rod; 406. Bushing; 407. Connecting plate 1; 408. Rotating hole 3; 409. Rotating hole 4; 410. Connecting rod 2; 411. Connecting plate 2; 412. Connecting rod 3; 413. Connecting rod 4; 414. Rotating hole 5; 415. Rotating hole 6; 416. Support plate; 417. Ball joint 1; 418. Ball joint 2;

[0038] 5. Clamping assembly; 501. Hydraulic cylinder 2; 502. Clamping plate;

[0039] 6. Bending assembly; 601. Rotating hole 1; 602. Rotating hole 2; 603. Bending plate; 604. Support column; 605. Anti-wrinkle plate; 606. Limiting hole; 607. Connecting hole; 608. Bending tube mold plate; 609. Storage hole; 610. Connecting rod 1; 611. Bending tube mold; 612. Rotating plate; 613. Transmission rod 1; 614. Motor 1; 615. Electric push rod; 616. Fixed clamp; 617. Transmission rod 2; 618. Motor 2; 619. Fixed plate; 620. Slide rail; 621. Sliding block; 622. Connecting block 1; 623. Rotating rod; 624. Connecting block 2; 625. Sliding ring; 626. Lifting plate; 627. Hydraulic cylinder 1; 628. Push rod; 629. Spring; 630. Mounting plate; 631. Conveying clamp. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1 — Figure 4 The present invention provides a technical solution: a pipe bending machine for metal pipe manufacturing, comprising a workbench 1.

[0042] like Figure 1 As shown, in some embodiments, a baffle plate 2 is fixedly connected to the bottom of the workbench 1, and the baffle plate 2 is placed on the ground to support the workbench 1. A through hole is opened on the surface of the workbench 1, and a bending assembly 6 is arranged in the through hole of the workbench 1. The bending assembly 6 is used to bend the metal tube to a desired angle, and a clamping assembly 5 is fixedly connected to the top of the workbench 1. The clamping assembly 5 is used to fix the position of the metal tube to be processed, and a feeding assembly 3 is slidably connected to the top of the workbench 1. The feeding assembly 3 is used to fix the position of the tail end of the metal tube to be processed and send the part of the metal tube to be processed that needs to be bent to the bending assembly 6. A supporting assembly 4 is fixed in the feeding assembly 3, and the supporting assembly 4 is used to support the inner wall of the metal tube when the metal tube is bent to prevent the cross-section of the metal tube from being deformed.

[0043] like Figure 2 and Figure 8 As shown, in some embodiments, the bending assembly 6 includes a rotating hole 1 601 and a rotating hole 2 602, and the rotating hole 1 601 and the rotating hole 2 602 are opened on the surface of the workbench 1, and a connecting hole 607 is opened on the surface of the workbench 1, and the connecting hole 607 connects the rotating hole 1 601 and the rotating hole 2 602.

[0044] An anti-wrinkle plate 605 is arranged above the rotating hole 1 601 , one end of the anti-wrinkle plate 605 is fixedly connected to the workbench 1 , and the other end of the anti-wrinkle plate 605 is fixedly connected to a support column 604 , which is located in the center of the rotating hole 1 601 .

[0045] The internal rotation of the rotating hole 601 is connected with a bending disk 603, which is a cylindrical structure. A number of limiting holes 606 are opened on the cylinder of the bending disk 603. The limiting holes 606 are evenly distributed on one half of the cylindrical surface of the bending disk 603. The limiting holes 606 are arranged along the radial direction of the bending disk 603. The depth of the limiting holes 606 along the radial direction is less than the radius of the cross section of the bending disk 603, and the limiting holes 606 pass through the end face of the bending disk 603.

[0046] By rotating the bending disk 603 , the limiting hole 606 is aligned with the connecting hole 607 , and the limiting hole 606 that is not adjacent to other limiting holes 606 in the counterclockwise direction is set as the first limiting hole. In the initial state, the first limiting hole is aligned with the connecting hole 607 .

[0047] The inside of the rotating hole 2 602 is rotatably connected with a bending mold plate 608, which is a cylindrical structure. A number of storage holes 609 are evenly opened on the cylindrical surface of the bending mold plate 608. The storage holes 609 are arranged along the radial direction of the bending mold plate 608. The depth of the storage holes 609 along the radial direction is less than the radius of the cross section of the bending mold plate 608. The storage holes 609 penetrate the end surface of the bending mold plate 608. A connecting rod 1 610 is arranged inside the storage hole 609. The connecting rod 1 610 slides inside the storage hole 609. The top of the connecting rod 1 610 is at the same horizontal plane as the workbench 1. A bending mold 611 is fixedly connected above the connecting rod 1 610. The bending mold 611 is above the bending mold plate 608. The bottom of the connecting rod 1 610 passes through the storage hole 609 and is exposed to the outside of the bending mold plate 608.

[0048] By rotating the tube bending die plate 608, the storage hole 609 is aligned with the connecting hole 607, and the connecting rod 610 slides in the storage hole 609 and slides to the inside of the limiting hole 606 through the connecting hole 607. The connecting rod 610 drives the tube bending die 611 to the top of the bending plate 603.

[0049] like Figure 3 As shown, in some embodiments, a rotating disk 612 is fixedly connected below the bending disk 603, a transmission rod 1 613 is fixedly connected below the rotating disk 612, one end of the transmission rod 1 613 is fixedly connected to the center of the rotating disk 612, and the other end of the transmission rod 1 613 is fixedly connected to a motor 1 614, the motor 1 614 includes a motor 1 main shaft, the motor 1 main shaft is fixedly connected to the transmission rod 1 613, and a fixed plate 619 is fixedly connected below the motor 1 614, and the fixed plate 619 is fixedly connected to the baffle 2. By starting the motor 1 614, the motor 1 main shaft drives the rotating disk 612 and the bending disk 603 to rotate relative to the workbench 1.

[0050] like Figure 4 As shown, in some embodiments, a plurality of electric push rods 615 are fixedly connected below the rotating disk 612, each electric push rod 615 corresponds to the limiting hole 606, the electric push rod 615 includes a fixed rod and an output rod, the fixed rod is fixedly connected to the rotating disk 612, a fixed clamp 616 is fixedly connected to the output rod, the fixed clamp 616 is used to fix the bending tube mold 611, the fixed clamp 616 includes a clamp and a connecting piece, a pressure sensor is fixedly connected to the connecting piece, the pressure sensor is between the two clamps, and the clamp is initially in an open state.

[0051] The position of the fixed clamp 616 is adjusted by starting the electric push rod 615. When the pressure sensor on the fixed clamp 616 senses that the pressure is increasing, a signal is fed back to the fixed clamp 616, and the two clamps of the fixed clamp 616 are contracted.

[0052] like Figure 3 As shown, in some embodiments, a transmission rod 2 617 is fixedly connected to the lower part of the bending mold plate 608, one end of the transmission rod 2 617 is fixedly connected to the center of the bending mold plate 608, and the other end of the transmission rod 2 617 is fixedly connected to a motor 2 618, the motor 2 618 includes a motor 2 main shaft, the motor 2 main shaft is fixedly connected to the transmission rod 2 617, and the motor 2 618 is fixedly connected to the upper part of the fixed plate 619. A sliding ring 625 is sleeved on the transmission rod 2 617, and a lifting plate 626 is fixedly connected to the sliding ring 625, and a hydraulic cylinder 1 627 is fixedly connected to the lower part of the lifting plate 626, and the hydraulic cylinder 1 627 includes a hydraulic cylinder 1 fixed rod and a hydraulic cylinder 1 output rod, the hydraulic cylinder 1 output rod is fixedly connected to the lower part of the lifting plate 626, and the hydraulic cylinder 1 fixed rod is fixedly connected to the fixed plate 619.

[0053] like Figure 5-6 As shown, in some embodiments, a plurality of slide rails 620 are fixed below the bending tube mold plate 608, one end of each slide rail 620 contacts with the transmission rod 2 617, and the other end of each slide rail 620 contacts with the storage hole 609, a slider 621 is slidably connected to the slide rail 620, the upper part of the slider 621 is slidably connected to the slide rail 620, a connecting block 1 622 is fixedly connected to the lower part of the slider 621, the upper part of the connecting block 1 622 is rotatably connected with a rotating rod 623, one end of the rotating rod 623 is rotatably connected to the connecting block 1 622, the other end of the rotating rod 623 is rotatably connected to a sliding ring 625, the sliding ring 625 includes a connecting block 2 624, and the connecting block 2 624 is rotatably connected to the rotating rod 623.

[0054] A push rod 628 is fixed to the side of the slider 621, and the push rod 628 is facing the direction of the storage hole 609. A spring 629 is sleeved on the outside of the push rod 628. One end of the spring 629 is fixedly connected to the slider 621, and the other end of the spring 629 is fixedly connected to a mounting plate 630. A through hole is opened on the surface of the mounting plate 630, and the push rod 628 slides inside the through hole of the mounting plate 630. One side of the mounting plate 630 is fixedly connected to the spring 629, and the other end of the mounting plate 630 is fixedly connected to a conveying clamp 631. The conveying clamp 631 has the same structure as the fixed clamp 616 and is not described in detail.

[0055] When the metal tube needs to be bent, the metal tube is placed between the tube bending die plate 608 and the bending plate 603 and in contact with the surface of the anti-wrinkle plate 605. The electric push rod 615 is started to adjust the telescopic length of the output rod of the electric push rod 615 according to the cross-sectional diameter of the metal tube. The bending plate 603 is driven to rotate by starting the motor 1 614. During the rotation of the bending plate 603, the hydraulic cylinder 1 627 is started. The output rod of the hydraulic cylinder 1 drives the lifting plate 626 to rise. The lifting plate 626 drives the sliding ring 625 to slide upward relative to the transmission rod 2 617. The sliding ring 625 drives the rotating rod 623 to rotate relative to the sliding ring 625. The rotating rod 623 drives the slider 621 and the spring 629 Sliding on the slide rail 620, the conveying clamp 631 clamps the connecting rod 610 in the initial state, and the conveying clamp 631 drives the bending mold 611 to slide. When the storage hole 609 is aligned with the connecting hole 607, the connecting hole 607 is also aligned with the limiting hole 606 at this time, and the bending mold 611 is conveyed to the bending disk 603. When the force sensor on the fixed clamp 616 feels the pressure, the clamp of the fixed clamp 616 clamps the connecting rod 610. When the force sensor on the conveying clamp 631 feels the pressure increase, the clamp of the conveying clamp 631 is relaxed, and the hydraulic cylinder output rod of the hydraulic cylinder 627 drives the sliding ring 625 to slide downward, and the conveying clamp 631 returns to its initial position. The tube bending die 611 on the bending disk 603 rotates relative to the support column 604 as the bending disk 603 rotates. The metal tube is bent as the tube bending die 611 on the bending disk 603 rotates. When the metal tube is bent to a suitable angle, the motor 1 614 stops.

[0056] When the work is completed, the control motor 1 614 and the motor 2 618 are reversed, and the above operation is repeated to retract the bending mold 611 onto the bending mold plate 608.

[0057] like Figure 7 As shown, in some embodiments, the support assembly 4 includes a support rod 401, one end of the support rod 401 is fixedly connected to a fixed block 402, a side of the fixed block 402 is provided with a fixing hole 403, the fixing hole 403 is used to fix the position of the support assembly 4, the other end of the support rod 401 is fixedly connected to a support block 404, the support block 404 is at the center of the cross section of the support rod 401, a sliding rod 405 is fixedly connected to the center above the support block 404, the sliding rod 405 is provided with a shaft sleeve 406 on the outside, the shaft sleeve 406 slides on the sliding rod 405, a hydraulic rod is fixedly connected above the support block 404, the hydraulic rod includes a hydraulic rod fixing rod and a hydraulic rod telescopic rod, the hydraulic rod fixing rod is fixedly linked to the support block 404, and the hydraulic rod telescopic rod is fixedly connected to the shaft sleeve 406.

[0058] A number of connecting plates 1 407 are evenly fixed on the outer surface of the shaft sleeve 406, and a rotating hole 3 408 and a rotating hole 409 are provided on the surface of the connecting plate 1 407. The rotating hole 3 408 is above the rotating hole 409, and a connecting rod 2 410 is rotatably connected to the rotating hole 409. One end of the connecting rod 2 410 is rotatably connected to the connecting plate 1 407, and the other end of the connecting rod 2 410 is rotatably connected to the connecting plate 2 411. A rotating hole 5 414 is provided at the connection between the connecting rod 2 410 and the connecting plate 2 411.

[0059] A connecting rod three 412 is rotatably connected to the rotating hole three 408, one end of the connecting rod three 412 is rotatably connected to the connecting plate one 407, the other end of the connecting rod three 412 is rotatably connected to the connecting rod four 413, one end of the connecting rod four 413 is rotatably connected to the connecting rod three 412, the other end of the connecting rod four 413 is fixedly rotatably connected to the connecting plate two 411, a rotating hole six 415 is provided at the rotatable connection between the connecting rod four 413 and the connecting plate two 411, the rotating hole six 415 is above the rotating hole five 414, a support plate 416 is fixedly connected to the connecting plate two 411, and the support plate 416 is used to support the inner wall of the metal pipe at the bend.

[0060] The top of the sliding rod 405 is fixedly connected with a spherical joint 417, which has a spherical outer shell and a circular concave hole on its surface. A spherical joint 418 is arranged in the center concave hole of the spherical joint 417, and the surface of the spherical joint 418 is fixedly connected with another support block 404, thereby reciprocating until the required length is reached.

[0061] like Figure 8 As shown, in certain embodiments, the clamping assembly 5 includes a hydraulic cylinder 2 501, the two hydraulic cylinders 501 are symmetrical relative to the anti-wrinkle plate 605, the hydraulic cylinder 2 501 includes a hydraulic cylinder 2 fixed rod and a hydraulic cylinder 2 output rod, the hydraulic cylinder 2 fixed rod is fixedly connected to the workbench 1, the hydraulic cylinder 2 output rod is fixedly connected to a clamping plate 502, and the clamping plate 502 is used to clamp the metal pipe.

[0062] According to the length of the metal pipe and the distance from the bend to the end face, the feed assembly 3 is slid, the metal pipe is included in the support assembly 4 from the top of the support assembly 4, one end face of the metal pipe is aligned with the feed assembly 3, the hydraulic cylinder 2 501 is started, and the two clamping plates 502 fix the metal pipe. By starting the hydraulic rod, the support plate 416 is adjusted to contact with the inner wall of the metal pipe, and when the support plate 416 contacts with the inner wall of the metal pipe, the hydraulic rod stops.

[0063] Working principle:

[0064] When this pipe bender is performing pipe bending work,

[0065] According to the length of the metal pipe and the distance from the bend to the end face, the feed assembly 3 is slid, the metal pipe is included in the support assembly 4 from the top of the support assembly 4, one end face of the metal pipe is aligned with the feed assembly 3, the hydraulic cylinder 2 501 is started, and the two clamping plates 502 fix the metal pipe. By starting the hydraulic rod, the support plate 416 is adjusted to contact with the inner wall of the metal pipe, and when the support plate 416 contacts with the inner wall of the metal pipe, the hydraulic rod stops.

[0066] At this time, the metal tube is between the tube bending die plate 608 and the bending plate 603, and is in contact with the surface of the anti-wrinkle plate 605. By starting the electric push rod 615, the telescopic length of the output rod of the electric push rod 615 is adjusted according to the cross-sectional diameter of the metal tube, and the bending plate 603 is driven to rotate by starting the motor 1 614. During the rotation of the bending plate 603, the hydraulic cylinder 1 627 is started, and the output rod of the hydraulic cylinder 1 drives the lifting plate 626 to rise. The lifting plate 626 drives the sliding ring 625 to slide upward relative to the transmission rod 2 617. The sliding ring 625 drives the rotating rod 623 to rotate relative to the sliding ring 625. The rotating rod 623 drives the slider 621 and the spring 629 on the slide rail 620. Sliding, the conveying clamp 631 clamps the connecting rod 610 in the initial state, and the conveying clamp 631 drives the bending mold 611 to slide. When the storage hole 609 is aligned with the connecting hole 607, the connecting hole 607 is also aligned with the limiting hole 606 at this time, and the bending mold 611 is conveyed to the bending disk 603. When the force sensor on the fixed clamp 616 feels the pressure, the clamp of the fixed clamp 616 clamps the connecting rod 610. When the force sensor on the conveying clamp 631 feels the pressure increase, the clamp of the conveying clamp 631 relaxes, and the hydraulic cylinder output rod of the hydraulic cylinder 627 drives the sliding ring 625 to slide downward, and the conveying clamp 631 returns to its initial position. The tube bending die 611 on the bending disk 603 rotates relative to the support column 604 as the bending disk 603 rotates. As the tube bending die 611 on the bending disk 603 rotates, one side of the metal tube is bent by the support column 604, and the other side of the metal tube is bent as the tube bending die 611 rotates. When the metal tube is bent to a suitable angle, the motor 614 stops.

[0067] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0068] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipe bending machine for metal pipe manufacturing, comprising a workbench (1), characterized in that: A baffle (2) is fixedly connected below the workbench (1), and the baffle (2) is placed on the ground to support the workbench (1); A through hole is provided on the surface of the workbench (1), and a bending assembly (6) is arranged in the through hole of the workbench (1). The bending assembly (6) is used to bend the metal tube to a desired angle. A clamping assembly (5) is fixedly connected above the workbench (1), and the clamping assembly (5) is used to fix the position of the metal tube to be processed. A feeding assembly (3) is slidably connected above the workbench (1), and the feeding assembly (3) is used to fix the position of the tail end of the metal tube to be processed and to send the part of the metal tube to be processed that needs to be bent to the bending assembly (6). A supporting assembly (4) is fixed inside the feeding assembly (3), and the supporting assembly (4) is used to support the inner wall of the metal tube when the metal tube is bent to prevent the cross section of the metal tube from being deformed; The bending assembly (6) comprises a first rotating hole (601) and a second rotating hole (602), wherein the first rotating hole (601) and the second rotating hole (602) are provided on the surface of the workbench (1), and a connecting hole (607) is provided on the surface of the workbench (1), wherein the connecting hole (607) connects the first rotating hole (601) and the second rotating hole (602); An anti-wrinkle plate (605) is provided above the rotating hole (601), one end of the anti-wrinkle plate (605) is fixedly connected to the workbench (1), and the other end of the anti-wrinkle plate (605) is fixedly connected to a support column (604), and the support column (604) is located in the center of the rotating hole (601); The rotating hole 1 (601) is internally rotatably connected with a bending disk (603), the bending disk (603) is a cylindrical structure, a plurality of limiting holes (606) are opened on the cylinder of the bending disk (603), the limiting holes (606) are evenly distributed on one half of the cylindrical surface of the bending disk (603), the limiting holes (606) are arranged along the radial direction of the bending disk (603), the depth of the limiting holes (606) along the radial direction is less than the radius of the cross section of the bending disk (603), and the limiting holes (606) pass through the end face of the bending disk (603); The second rotating hole (602) is internally rotatably connected to a bending mold disc (608), the bending mold disc (608) being a cylindrical structure, a plurality of storage holes (609) being evenly provided on the cylindrical surface of the bending mold disc (608), the storage holes (609) being arranged along the radial direction of the bending mold disc (608), the depth of the storage holes (609) along the radial direction being less than the radius of the cross section of the bending mold disc (608), the storage holes (609) penetrating the end surface of the bending mold disc (608), the storage holes A connecting rod (610) is arranged inside the (609), and the connecting rod (610) slides inside the storage hole (609), and the top of the connecting rod (610) is on the same horizontal plane as the workbench (1), and a bending mold (611) is fixedly connected above the connecting rod (610), and the bending mold (611) is above the bending mold plate (608), and the bottom of the connecting rod (610) passes through the storage hole (609) and is exposed to the outside of the bending mold plate (608); A rotating disk (612) is fixedly connected below the bending disk (603), a transmission rod (613) is fixedly connected below the rotating disk (612), one end of the transmission rod (613) is fixedly connected to the center of the rotating disk (612), the other end of the transmission rod (613) is fixedly connected to a motor (614), the motor (614) comprises a motor main shaft, the motor main shaft is fixedly connected to the transmission rod (613), a fixing plate (619) is fixedly connected below the motor (614), the fixing plate (619) is fixedly connected to the baffle (2), and by starting the motor (614), the motor main shaft drives the rotating disk (612) and the bending disk (603) to rotate relative to the workbench (1); A plurality of electric push rods (615) are fixedly connected below the rotating disk (612), each of the electric push rods (615) corresponds to the limiting hole (606), the electric push rod (615) comprises a fixed rod and an output rod, the fixed rod is fixedly connected to the rotating disk (612), a fixed clamp (616) is fixedly connected to the output rod, the fixed clamp (616) is used to fix the tube bending die (611), the fixed clamp (616) comprises a clamp and a connecting piece, a pressure sensor is fixedly connected to the connecting piece, the pressure sensor is between the two clamps, and the clamp is assumed to be in an open state in an initial state; A transmission rod 2 (617) is fixedly connected to the lower side of the bending tube mold plate (608), one end of the transmission rod 2 (617) is fixedly connected to the center of the bending tube mold plate (608), and the other end of the transmission rod 2 (617) is fixedly connected to a motor 2 (618), and the motor 2 (618) includes a motor 2 main shaft, and the motor 2 main shaft is fixedly connected to the transmission rod 2 (617), and the motor 2 (618) is fixedly connected to the upper side of the fixing plate (619). , a sliding ring (625) is sleeved on the transmission rod 2 (617), a lifting plate (626) is fixedly connected to the sliding ring (625), a hydraulic cylinder 1 (627) is fixedly connected below the lifting plate (626), the hydraulic cylinder 1 (627) comprises a hydraulic cylinder 1 fixed rod and a hydraulic cylinder 1 output rod, the hydraulic cylinder 1 output rod is fixedly connected to the bottom of the lifting plate (626), and the hydraulic cylinder 1 fixed rod is fixedly connected to the fixed plate (619); As shown in Figures (5)-(6), in some embodiments, a plurality of slide rails (620) are fixed below the bending tube mold plate (608), one end of each of the slide rails (620) contacts the second transmission rod (617), and the other end of each of the slide rails (620) contacts the storage hole (609), and a slider (621) is slidably connected to the slide rail (620), and the upper part of the slider (621) is slidably connected to the slide rail (620), and the slider (621) is slidably connected to the slide rail (620). A connecting block 1 (622) is fixedly connected below the connecting block 1 (621), and a rotating rod (623) is rotatably connected to the upper portion of the connecting block 1 (622), one end of the rotating rod (623) is rotatably connected to the connecting block 1 (622), and the other end of the rotating rod (623) is rotatably connected to the sliding ring (625), and the sliding ring (625) includes a connecting block 2 (624), and the connecting block 2 (624) is rotatably connected to the rotating rod (623); A push rod (628) is fixed to the side of the slider (621), and the push rod (628) faces the direction of the storage hole (609). A spring (629) is sleeved on the outside of the push rod (628), and one end of the spring (629) is fixedly connected to the slider (621), and the other end of the spring (629) is fixedly connected to a mounting plate (630). A through hole is opened on the surface of the mounting plate (630), and the push rod (628) slides inside the through hole of the mounting plate (630). One side of the mounting plate (630) is fixedly connected to the spring (629), and the other end of the mounting plate (630) is fixedly connected to a conveying clamp (631). The conveying clamp (631) has the same structure as the fixed clamp (616) and is not described in detail.

2. A metal tube bending machine according to claim 1, characterized in that: The support assembly (4) comprises a support rod (401), one end of the support rod (401) is fixedly connected to a fixing block (402), a side of the fixing block (402) is provided with a fixing hole (403), the fixing hole (403) is used to fix the position of the support assembly (4), the other end of the support rod (401) is fixedly connected to a support block (404), the support block (404) is at the center of the cross section of the support rod (401), a sliding rod (405) is fixedly connected to the center above the support block (404), the sliding rod (405) is externally sleeved with a shaft sleeve (406), the shaft sleeve (406) slides on the sliding rod (405), a hydraulic rod is fixedly connected above the support block (404), the hydraulic rod comprises a hydraulic rod fixing rod and a hydraulic rod telescopic rod, the hydraulic rod fixing rod is fixedly linked to the support block (404), and the hydraulic rod telescopic rod is fixedly connected to the shaft sleeve (406).

3. A metal tube bending machine according to claim 2, characterized in that: A plurality of connecting plates 1 (407) are evenly fixed on the outer surface of the shaft sleeve (406), and a rotating hole 3 (408) and a rotating hole 4 (409) are provided on the surface of the connecting plate 1 (407). The rotating hole 3 (408) is above the rotating hole 4 (409), and a connecting rod 2 (410) is rotatably connected to the rotating hole 4 (409). One end of the connecting rod 2 (410) is rotatably connected to the connecting plate 1 (407), and the other end of the connecting rod 2 (410) is rotatably connected to the connecting plate 2 (411), and a rotating hole 5 (414) is provided at the connection between the connecting rod 2 (410) and the connecting plate 2 (411).

4. A metal tube bending machine according to claim 3, characterized in that: The rotating hole three (408) is rotatably connected to a connecting rod three (412), one end of the connecting rod three (412) is rotatably connected to the connecting plate one (407), the other end of the connecting rod three (412) is rotatably connected to a connecting rod four (413), one end of the connecting rod four (413) is rotatably connected to the connecting rod three (412), the other end of the connecting rod four (413) is fixedly rotatably connected to the connecting plate two (411), a rotating hole six (415) is provided at the rotatable connection between the connecting rod four (413) and the connecting plate two (411), the rotating hole six (415) is above the rotating hole five (414), a support plate (416) is fixedly connected to the connecting plate two (411), and the support plate (416) is used to support the inner wall of the metal tube at the bend.

5. A metal tube bending machine according to claim 4, characterized in that: The top end of the sliding rod (405) is fixedly connected with a spherical joint 1 (417), the spherical joint 1 (417) has an outer spherical shell and a circular concave hole on the surface, a spherical joint 2 (418) is arranged in the center concave hole of the spherical joint 1 (417), and the surface of the spherical joint 2 (418) is fixedly connected with another support block (404), thereby reciprocating until the required length is reached.

6. A metal tube bending machine according to claim 5, characterized in that: The clamping assembly (5) includes a hydraulic cylinder 2 (501), the two hydraulic cylinders 2 (501) are symmetrical relative to the anti-wrinkle plate (605), the hydraulic cylinder 2 (501) includes a hydraulic cylinder 2 fixed rod and a hydraulic cylinder 2 output rod, the hydraulic cylinder 2 fixed rod is fixedly connected to the workbench (1), and the hydraulic cylinder 2 output rod is fixedly connected to a clamping plate (502), and the clamping plate (502) is used to clamp the metal pipe.

7. A metal tube bending machine according to claim 1, characterized in that: The cross-sectional diameter of the support column (604) is the same as the width of the limiting hole (606) and the storage hole (609).

8. A method for fixing a metal pipe of a pipe bender according to any one of claims 1 to 7, characterized in that: According to the length of the metal pipe and the required distance from the bend to the end face, the feed assembly (3) is slid, the metal pipe is placed on the workbench (1) from the top of the support assembly (4) and the support assembly (4) is included therein, one end face of the metal pipe is aligned with the feed assembly (3), the hydraulic cylinder 2 (501) is started, and the two clamping plates (502) fix the metal pipe, and the support plate (416) is adjusted to contact the inner wall of the metal pipe by starting the hydraulic rod, and when the support plate (416) contacts the inner wall of the metal pipe, the hydraulic rod stops.

9. The method for bending a pipe using a pipe bending machine according to any one of claims 8, characterized in that: When the metal tube is fixed above the workbench (1), the metal tube is between the tube bending die plate (608) and the bending plate (603) and is in contact with the surface of the anti-wrinkle plate (605). By starting the electric push rod (615), the telescopic length of the output rod of the electric push rod (615) is adjusted according to the cross-sectional diameter of the metal tube. By starting the motor 1 (614), the bending plate (603) is driven to rotate. During the rotation of the bending plate (603), the hydraulic cylinder 1 (627) is started, and the output rod of the hydraulic cylinder 1 drives the lifting The descending plate (626) rises, and the lifting plate (626) drives the sliding ring (625) to slide upward relative to the second transmission rod (617). The sliding ring (625) drives the rotating rod (623) to rotate relative to the sliding ring (625). The rotating rod (623) drives the slider (621) and the spring (629) to slide on the slide rail (620). The conveying clamp (631) clamps the connecting rod (610) in the initial state, and the conveying clamp (631) drives the bending mold (611) to slide. When the storage hole (609) is aligned with the connecting hole (607), the connecting hole (607) is also aligned with the limiting hole (606), and the tube bending die (611) is transported to the bending plate (603). When the force sensor on the fixed clamp (616) senses pressure, the clamp of the fixed clamp (616) clamps the connecting rod 1 (610). When the force sensor on the conveying clamp (631) senses an increase in pressure, the clamp of the conveying clamp (631) relaxes, and the hydraulic pressure of the hydraulic cylinder 1 (627) is increased. The output rod of the pressure cylinder drives the sliding ring (625) to slide downward, and the conveying clamp (631) returns to the initial position. The tube bending die (611) on the bending disk (603) rotates relative to the support column (604) as the bending disk (603) rotates. As the tube bending die (611) on the bending disk (603) rotates, one side of the metal tube is bent by the support column (604), and the other side of the metal tube is bent as the tube bending die (611) rotates. When the metal tube is bent to a suitable angle, the motor (614) stops.

10. The pipe bending method of a pipe bending machine according to any one of claim 8, characterized in that: When the work is completed, the control machine reverses the motor 1 (614) and the motor 2 (618), and the pipe bending die (611) can be completely retracted onto the pipe bending die plate (608).

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