An integrated head for a pipe bending machine

Abstract

This application relates to the field of pipe bending equipment technology, and more particularly to an integrated head for a pipe bending machine, comprising a base plate, a rotating disk rotatably connected to the base plate, the rotating disk being coaxial with and offset from a heating cylinder, and a rotating unit connected to the base plate, the rotating unit being connected to the rotating disk for driving the rotating disk to rotate; a bending assembly, the bending assembly being disposed on the side of the base plate near the rotating disk, and the bending assembly being used to bend pipes and to clamp and release the pipes; and a telescopic unit, one end of the telescopic unit being connected to the bending assembly and the other end being connected to the rotating disk, for driving the bending assembly toward or away from the rotating disk; this application has the effects of reducing waste of pipe fitting tail material, reducing the safety hazards of manual material handling, and improving the bending quality of products.

Description

Technical Field

[0001] This application relates to the field of pipe bending equipment technology, and in particular to an integrated head for a pipe bending machine. Background Technology

[0002] Automotive piping is an important component of automobiles. Due to the compact structure of the front compartment, automotive piping needs to make way for other structures. Therefore, during automobile assembly, automotive piping, such as oil pipes, needs to be processed into different angles using bending dies or bending equipment according to different vehicle models and different layout structures to meet the requirements and placement of the parts in use.

[0003] The prior art discloses a pipe bending machine with one-end feeding. The pipe bending machine has a feeding mechanism for conveying pipe fittings at one end of the machine base, and a pipe bending device for receiving bent pipe fittings at the other end of the corresponding feeding mechanism. The pipe bending device includes a machine head support, a pipe bending arm and a third drive mechanism mounted on the machine head support. The pipe bending arm is rotatably mounted on the machine head support via a main shaft. The third drive mechanism is connected to the main shaft and can drive the main shaft to rotate. A wheel mold is provided at the top of the main shaft. A clamping mold that cooperates with the wheel mold is provided on the pipe bending arm. A clamping mold driving device is also provided on the pipe bending arm. The clamping mold driving device is connected to the clamping mold and can drive the clamping mold to approach or move away from the wheel mold.

[0004] Regarding the aforementioned technologies, during bending, the pipe is fed by a feeding mechanism located at one end of the machine base. When the pipe to be bent is a nylon pipe or other material that needs to be heated and softened, a heating unit needs to be added between the feeding mechanism and the bending arm. When the pipe is fed to the final tail section, since the position of the feeding mechanism is fixed, the pipe cannot continue to move towards the bending arm after losing its power source. As a result, the pipe in the heating unit cannot be used for bending, leading to material waste. Furthermore, the pipe needs to be manually removed from the heating unit, which is cumbersome, and the high temperature of the pipe also poses potential safety hazards. Summary of the Invention

[0005] In order to reduce the waste of pipe fitting tail material and reduce the safety hazards of manual material handling, this application provides an integrated head for a pipe bending machine.

[0006] The integrated head of a pipe bending machine provided in this application adopts the following technical solution:

[0007] An integrated head for a pipe bending machine, comprising:

[0008] A base plate, on which a rotating disk is rotatably connected, the rotating disk being coaxial with and offset from the heating cylinder, and a rotating unit connected to the base plate, the rotating unit being connected to the rotating disk for driving the rotating disk to rotate;

[0009] A bending assembly is disposed on the side of the base plate near the rotating disk, and the bending assembly is used to bend the pipe and to clamp and release the pipe.

[0010] A telescopic unit, one end of which is connected to the bending assembly and the other end of which is connected to the rotating disk, is used to drive the bending assembly toward or away from the rotating disk.

[0011] By adopting the above technical solution, after the pipe material on the coil separates from the coil and enters the inner cavity of the heating cylinder for heating and softening, the pipe loses the conveying power from the rear feeding unit. At this time, the bending assembly clamps the pipe, and then the telescopic unit drives the bending assembly to move, which in turn moves the pipe until it is pulled out to the target length. Then, the telescopic unit drives the bending assembly to retract to the preset bending position of the pipe, and the bending assembly completes the pipe bending process. When three-dimensional bending is required, the rotating unit drives the rotating disk to rotate, thereby changing the relative position of the bending assembly and the pipe circumference. After the bending process of this product is completed, Cut the pipe and proceed to process the next product. Repeat the above steps until all the pipes inside the heating cylinder are extracted. The designed pipe bending machine features an integrated head, which uses a base plate to provide a mounting foundation for the rotating disc, rotating unit, and telescopic unit. Through the cooperation of the rotating unit and the rotating disc, the relative position of the bending assembly and the pipe in the circumferential direction can be changed by the telescopic unit, thereby enabling the processing of complex pipe bending shapes. The bending assembly can release and clamp the pipe at different stages of bending, and then, in conjunction with the telescopic unit, extract the tail pipe material inside the heating cylinder, reducing waste of pipe tail material and mitigating the safety hazards associated with manual material handling.

[0012] In one specific implementation, a clamping unit is also included, the clamping unit comprising:

[0013] Two clamping plates are slidably connected to the discharge end of the heating cylinder, and the clamping plates have clamping half holes on the side near the pipe. The two clamping plates are located on opposite sides of the pipe, and the two clamping half holes form clamping holes for the pipe to pass through.

[0014] A clamping drive assembly is mounted on the heating cylinder and is used to connect with the clamping plate to change the distance between the two clamping plates. The clamping drive assembly is offset from the bending assembly.

[0015] By adopting the above technical solution, the designed clamping unit can easily drive the two clamping plates to move closer or further apart through the clamping drive component, thereby achieving clamping and fixing of the pipe. The clamping and fixing of the pipe is achieved during the retraction of the bending wheel body, avoiding uncontrollable swaying of the pipe due to the weight of the bent part, and improving the processing quality of the pipe product.

[0016] In one specific implementation, the clamping drive assembly includes

[0017] Two hinged push rods are rotatably connected to the heating cylinder. One end of each hinged push rod abuts against the side of the clamping plate away from the pipe, and a spring is provided between the clamping plate and the side wall of the sliding cavity.

[0018] The T-shaped tie rod has a horizontal section that simultaneously abuts against one end of both hinged push rods, and a vertical section that is used to slide with the heating cylinder.

[0019] Multiple transmission levers are rotatably connected to the heating cylinder. The multiple transmission levers are arranged along the axial direction of the heating cylinder, and the ends of two adjacent transmission levers abut against each other. One end of the transmission lever near the bending assembly is hinged to the vertical section of the T-shaped tie rod.

[0020] A clamping drive cylinder is connected to one end of the transmission lever away from the bending assembly, and the piston rod of the clamping drive cylinder is used to abut against the outer wall of the heating cylinder.

[0021] By adopting the above technical solution, when it is necessary to clamp and fix the pipe, the piston rod of the clamping drive cylinder extends and abuts against the outer wall of the heating cylinder. The cylinder body of the clamping drive cylinder drives the T-shaped pull rod to move through a transmission structure composed of multiple transmission levers. The T-shaped pull rod simultaneously drives the two hinged push rods to rotate, thereby causing the clamping plate to move towards the pipe side against the tension of the spring until the pipe is clamped and fixed. The designed clamping drive assembly facilitates the movement of the transmission structure composed of multiple transmission levers through the clamping drive cylinder. Thus, under the premise of being offset from the bending assembly, the movement of the T-shaped pull rod is realized. Through the cooperation of the T-shaped pull rod, the hinged push rod and the spring, the two clamping plates can be moved closer or further apart, thereby realizing the clamping, fixing or releasing of the pipe.

[0022] In one specific implementation, the clamping unit further includes

[0023] An annular sealing cylinder is coaxially connected to the heating cylinder, and the vertical section of the T-shaped tie rod extends out and is slidably connected to the annular sealing cylinder;

[0024] A sealing cover plate is detachably and fixedly connected to the annular sealing cylinder, and the sealing cover plate is slidably connected to the clamping plate on the side away from the heating cylinder. The sealing cover plate has a through hole for the pipe to pass through.

[0025] By adopting the above technical solution, the annular sealing cylinder can be used in conjunction with the sealing cover plate to reduce the impact of dust in the environment on the quality of the heated and softened pipe. At the same time, it can also form a relatively sealed environment, reducing heat exchange between the pipe and the ambient air, thereby maximizing the pipe's resistance to thermal deformation during bending.

[0026] In one specific implementation, the bending assembly includes

[0027] The mounting plate has two bending wheel bodies slidably connected to it. The sliding axes of the two bending wheel bodies are collinear, and the bending wheel bodies have semi-grooves. The semi-grooves on the two bending wheel bodies form a pipeline groove, through which the pipeline passes and extends into the pipeline groove.

[0028] A control unit is mounted on the mounting plate and is simultaneously connected to both of the bending wheel bodies, for controlling the two bending wheel bodies to face each other or move away from each other;

[0029] A bending unit is disposed below the bending wheel body, and the bending unit is used to make the pipe wrap around and fit into the pipeline groove;

[0030] A cooling unit is connected to the mounting plate and is used to blow cold air to the bends in the pipe.

[0031] A cutting unit is disposed on the mounting plate and is used to cut off the pipe.

[0032] By adopting the above technical solution, the rear feeding unit unrolls and straightens the coiled pipe before feeding it into the heating unit for heating and softening. The softened pipe then exits from the outlet end of the heating unit, passing through a through-hole in the mounting plate and extending into a pipe groove formed by the mating of the upper grooves of two bending rollers. The bending unit then operates, causing the pipe to wrap around and conform to the inner wall of the pipe groove, resulting in a bend. Subsequently, the control unit drives the two bending rollers to move towards each other, reducing the width of the pipe groove. Simultaneously, the two bending rollers press and soften the pipe, reducing its radial width and increasing its radial thickness, ensuring the appropriate opening size at the bend. The cooling unit then cools and shapes the bend. After the bending process is complete, the pipe is cut by the cutting unit, ready for the next product. The designed bending assembly, through the mounting plate, facilitates the installation of the bending wheel body, control unit, cooling unit, and cutting unit. The control unit allows for the control of the two bending wheel bodies to move towards or away from each other, thereby cooperating with the bending wheel body itself to achieve changes in the width of the pipeline groove. It enables the release and clamping of the pipeline at different stages of bending, ultimately controlling the size of the channel opening at the pipeline bend to ensure the quality of the bent pipeline. At the same time, it can also clamp and fix the pipeline, preventing the pipeline from sagging due to its own weight during the rear feeding process, which would greatly increase the difficulty of bending. The bending unit facilitates the bending of the pipeline in conjunction with the bending wheel body. The cooling unit facilitates the rapid cooling of the softened pipeline, reducing the possibility of deformation due to gravity or external forces from the next bend after the pipeline is bent. The cutting unit facilitates the cutting between two adjacent pipeline products.

[0033] In one specific implementation, the telescopic unit includes

[0034] A fixing bar, wherein the number of fixing bars is at least one, and the fixing bar is connected to the rotating disk;

[0035] The sliding bar, at least one in number, is slidably connected to the fixed bar, and the end of the sliding bar away from the rotating disk is connected to the mounting plate;

[0036] A telescopic cylinder, wherein the cylinder body of the telescopic cylinder is connected to the mounting plate, the piston rod of the telescopic cylinder is connected to the rotating disk, and the axial direction of the piston rod of the telescopic cylinder and the sliding direction of the sliding strip are both consistent with the axial direction of the heating cylinder.

[0037] By adopting the above technical solution, after the two bending wheel bodies approach each other to clamp and fix the pipe, the piston rod of the telescopic cylinder extends, causing the sliding strip to slide on the fixed strip. While the sliding strip slides, it drives the mounting plate to move, realizing the pulling of the pipe and the retraction of the bending wheel body. The designed telescopic unit, through the cooperation of the telescopic cylinder, the sliding strip and the fixed strip, can realize the movement of the bending wheel body toward or away from the heating cylinder, thereby completing the pulling of the pipe and the position adjustment of the bending wheel body.

[0038] In one specific implementation, the control unit includes

[0039] A finger cylinder is located on one side of the bending wheel body and is connected to the mounting plate;

[0040] Multiple linear slide rails are provided, which are connected to the mounting plate. The multiple linear slide rails are arranged along their own width. Two sliders are slidably connected to each linear slide rail. The two sliders are respectively connected to the two bending wheel bodies. The sliding direction of the sliders is consistent with the axial direction of the bending wheel body. The two sliders on the linear slide rail near the finger cylinder are respectively hinged to the two output ends of the finger cylinder.

[0041] By adopting the above technical solution, the designed control unit uses a finger cylinder to easily drive two sliders located near the finger cylinder to slide on a linear slide rail, thereby moving them closer or further apart. This, in turn, drives the two curved wheel bodies to move, achieving clamping and squeezing actions on the pipe.

[0042] In one specific implementation, the bending unit includes

[0043] A bending rod, wherein the bending rod has an arc-shaped groove adapted to the outer diameter of the pipe on the side near the bending wheel body, and the rotation axis of the bending rod is coaxial with the central axis of the bending wheel body;

[0044] A bending drive assembly is located below the bending rod and is connected to the bending rod for driving the bending rod to rotate.

[0045] By adopting the above technical solution, the designed bending unit can easily drive the bending rod to rotate through the bending drive component, and the bending rod can easily apply force to the pipe, so that the pipe is deformed and wrapped around and attached to the inner wall of the pipeline groove, thereby completing the bending process of the pipe.

[0046] In one specific implementation, the cutting unit includes

[0047] A cutter, wherein a sliding gap is provided between the cutter and the mounting plate, and the cutter is disposed between the mounting plate and the bending wheel body;

[0048] A cut-off drive cylinder is connected to the mounting plate, and the piston rod of the cut-off drive cylinder is connected to the cutter, for driving the cutter to move toward the pipe.

[0049] By adopting the above technical solution, the designed cutting unit uses a cutting drive cylinder to easily move the cutter toward or away from the pipe, thereby allowing the pipe to pass through the mounting plate or completing the pipe cutting work. The cutter facilitates the cutting of the pipe, realizing the separation between two pipe products. However, by placing the cutter between the mounting plate and the bending wheel body, compared to placing the cutter on the side of the mounting plate away from the bending wheel body, when the length of the pipe tail is less than the thickness of the mounting plate, the pipe product cannot be cut completely and further separate cutting is required, making the pipe bending process more complicated and costly.

[0050] In one specific implementation, the rotating unit includes

[0051] A rotary servo motor is mounted on the base plate, and the output shaft of the rotary servo motor is aligned with the axial direction of the rotating disk.

[0052] A drive wheel is coaxially connected to one end of the output shaft of the rotary servo motor that passes through the base plate.

[0053] A transmission belt is fitted onto the rotating disc and the drive wheel to realize the transmission between the drive wheel and the rotating disc.

[0054] By adopting the above technical solution, the designed rotating unit can easily drive the drive wheel to rotate through a rotary servo motor. The drive wheel, in conjunction with the transmission belt, can easily drive the rotating disk to rotate. In turn, it can work with the bending wheel body and the bending unit to process pipe fittings with complex bending angle requirements.

[0055] In summary, this application includes at least one of the following beneficial technical effects:

[0056] 1. The designed pipe bending machine features an integrated head. The base plate provides a mounting foundation for the rotating disc, rotating unit, and telescopic unit. The rotating unit and disc work together, while the telescopic unit allows for changes in the relative position of the bending wheel body and bending unit with the pipe in the circumferential direction, enabling the processing of complex pipe bending shapes. The mounting plate provides installation positions for the bending wheel body, control unit, cooling unit, and cutting unit. The control unit allows for control of the two bending wheel bodies moving towards or away from each other, thus coordinating with the bending wheel body to change the groove width of the pipe channel. This allows for the release and compression of the pipe at different stages of bending, ultimately controlling the size of the pipe opening at the bend and ensuring the quality of the bent pipe. Simultaneously, it can clamp and fix the pipe, and, in conjunction with the telescopic unit, extract the tail pipe from the heating cylinder. The bending unit facilitates bending the pipe in conjunction with the bending wheel body, and the cutting unit facilitates cutting between adjacent pipe products.

[0057] 2. The integrated head of the pipe bending machine is designed to easily drive the two clamping plates closer or further apart through the clamping drive assembly, thereby clamping and fixing the pipe. The pipe is clamped and fixed during the retraction of the bending wheel body, which prevents the pipe from swinging uncontrollably due to the weight of the bent part, thus improving the processing quality of the pipe products.

[0058] 3. The integrated head of the pipe bending machine is designed so that the cutting drive cylinder can easily move the cutter toward or away from the pipe, thereby making way for the pipe to pass through the mounting plate or to complete the pipe cutting work. The cutter facilitates the cutting of the pipe and realizes the separation between two pipe products. However, placing the cutter between the mounting plate and the bending wheel body is more advantageous than placing the cutter on the side of the mounting plate away from the bending wheel body. When the length of the pipe tail is less than the thickness of the mounting plate, the pipe product cannot be cut completely and further separate cutting is required. This makes the pipe bending process more complicated and more expensive. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of the integrated head of the pipe bending machine according to an embodiment of this application.

[0060] Figure 2 This is a structural schematic diagram of the mounting plate and the main body of the bending wheel in the embodiments of this application.

[0061] Figure 3 yes Figure 2 A schematic diagram of the structure after the addition of the control unit.

[0062] Figure 4 yes Figure 3 A partial structural diagram.

[0063] Figure 5 yes Figure 1 A partial structural diagram.

[0064] Figure 6 yes Figure 5 A partial structural diagram.

[0065] Explanation of reference numerals in the attached drawings: 01, Heating cylinder; 1, Base plate; 2, Rotating disk; 3, Rotating unit; 31, Rotary servo motor; 32, Drive wheel; 33, Transmission belt; 4, Bending assembly; 41, Mounting plate; 42, Bending wheel body; 421, Semi-groove; 43, Control unit; 431, Finger cylinder; 432, Linear slide rail; 433, Slider; 44, Bending unit; 441, Bending rod; 442, Bending drive assembly; 4421, Receiving box; 4422, Bending servo motor; 4423, Right angle reducer; 4424, Lower coupling. 4425. Flange; 4426. Main bending wheel shaft; 4427. Connecting block; 45. Cooling unit; 451. Air supply rod; 452. Air outlet rod; 46. Cutting unit; 461. Cutter; 462. Cutting drive cylinder; 5. Telescopic unit; 51. Fixing strip; 52. Sliding strip; 53. Telescopic cylinder; 6. Clamping unit; 61. Clamping plate; 611. Clamping half hole; 62. Clamping drive assembly; 621. Hinge push rod; 622. T-shaped tie rod; 623. Transmission lever; 624. Clamping drive cylinder; 63. Annular sealing cylinder; 64. Sealing cover plate. Detailed Implementation

[0066] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0067] This application discloses an integrated head for a pipe bending machine.

[0068] Reference Figure 1 An integrated head for a pipe bending machine includes a base plate 1, a rotating disk 2, and a rotating unit 3. The base plate 1 is connected to the machine body assembly via an intermediate connecting structure. The rotating disk 2 is located on the side of the base plate 1 away from the machine body assembly and is rotatably connected to the base plate 1. The rotation axis of the rotating disk 2 is horizontal and perpendicular to the base plate 1. A heating cylinder 01 passes through the base plate 1 and the rotating disk 2, and is offset from the base plate 1 and the rotating disk 2. The rotating unit 3 is connected to the base plate 1 and the rotating disk 2, and is used to drive the rotating disk 2 to rotate.

[0069] Reference Figure 1The rotating unit 3 includes a rotary servo motor 31, a drive wheel 32, and a transmission belt 33. The base of the rotary servo motor 31 is bolted to the side of the base plate 1 away from the rotating disk 2, and the output shaft of the rotary servo motor 31 is aligned with the axial direction of the rotating disk 2. The drive wheel 32 is coaxially connected to one end of the output shaft of the rotary servo motor 31 that passes through the base plate 1. The transmission belt 33 is simultaneously sleeved on the rotating disk 2 and the drive wheel 32, and the transmission belt 33 achieves transmission with the rotating disk 2 and the drive wheel 32 through friction.

[0070] Reference Figure 1 and Figure 2 To facilitate the extraction and processing of pipe tailings retained in the heating cylinder 01, the integrated head of the pipe bending machine also includes a bending assembly 4 and a telescopic unit 5. The bending assembly 4 includes a mounting plate 41, a bending wheel body 42, and a control unit 43. The mounting plate 41 is located on the side of the base plate 1 away from the machine body assembly, and the distance between the mounting plate 41 and the rotating disk 2 is controlled by the telescopic unit 5. There are two bending wheel bodies 42, and the bending wheel bodies 42 are slidably connected to the mounting plate 41. A semi-groove 421 is provided on the bending wheel body 42, and the semi-groove 421 is coaxially arranged with the bending wheel body 42. The semi-groove 421 on the two bending wheel bodies 42 cooperate to form a pipeline groove. A through hole is provided on the mounting plate 41, and the through hole is connected to one end of the pipeline groove. The heated and softened pipe passes through the through hole and extends into the pipeline groove.

[0071] Reference Figure 2 and Figure 3 The control unit 43 is installed on the mounting plate 41 and is connected to both bending wheel bodies 42. This allows the two bending wheel bodies 42 to move closer to or further away from each other, thereby cooperating with the bending wheel bodies 42 to change the width of the pipeline groove. This releases and compresses the pipeline at different stages of bending, ultimately controlling the size of the channel opening at the pipeline bend and ensuring the quality of the bent pipeline. At the same time, it can also clamp and fix the pipeline, and cooperate with the telescopic unit 5 to extract the pipeline tail material inside the heating cylinder 01.

[0072] Reference Figure 3 and Figure 4 The control unit 43 includes a finger cylinder 431 and a linear slide rail 432. The finger cylinder 431 is located on one side of the bending wheel body 42, and the cylinder body of the finger cylinder 431 is bolted to the mounting plate 41. The linear slide rail 432 is bolted to the mounting plate 41. There are multiple linear slide rails 432, which are distributed along their width direction. Two sliders 433 are slidably connected to the linear slide rail 432. The two sliders 433 are bolted to the two sides of the bending wheel body 42 near the mounting plate 41, and the sliding direction of the sliders 433 is consistent with the axial direction of the bending wheel body 42. The two output ends of the finger cylinder 431 are hinged to the two sliders 433 on the linear slide rail 432 near the finger cylinder 431.

[0073] Reference Figure 3 In this application, the number of linear slide rails 432 can be two, three, or four, as long as it allows the bending wheel body 42 to slide smoothly. In this embodiment, the number of linear slide rails 432 is two. The finger cylinder 431 facilitates the movement of two sliders 433 located near the finger cylinder 431 on the linear slide rails 432 to move closer or further apart, thereby driving the two bending wheel bodies 42 to move and achieve clamping and squeezing action on the pipe. Moreover, compared to the integrated bending wheel and the opening of a pipe groove with a width that gradually decreases on the bending wheel body 42, this method can solve the pipe crease defect caused when the pipe moves to the groove width connection of the semi-groove 421.

[0074] Reference Figure 3 and Figure 4 In order to make the heated and softened pipe wrap around and fit against the inner wall of the pipeline groove, the bending assembly 4 also includes a bending unit 44. The bending unit 44 is located below the bending wheel body 42. The bending unit 44 includes a bending rod 441 and a bending drive assembly 442. The bending rod 441 has an arc-shaped groove adapted to the outer diameter of the pipe on the side near the bending wheel body 42. The rotation axis of the bending rod 441 is coaxial with the central axis of the bending wheel body 42. The bending drive assembly 442 is located below the bending rod 441 and is connected to the bending rod 441. It is used to drive the bending rod 441 to rotate and apply force to the pipe through the inner wall of the arc-shaped groove so that the pipe wraps around the inner wall of the pipeline groove, thus completing the bending action.

[0075] Reference Figure 3 and Figure 4 The bending drive assembly 442 includes a housing 4421, a bending servo motor 4422, a right-angle reducer 4423, a coupling lower flange 4424, a main bending wheel shaft 4425, and a connecting block 4426. The housing 4421 is connected to the telescopic unit 5 and is hollow. The bending servo motor 4422 is located in the inner cavity of the housing 4421 and its output shaft is horizontal. The right-angle reducer 4423 is located in the inner cavity of the housing 4421 and its horizontal input shaft is coaxially connected to the output shaft of the bending servo motor 4422.

[0076] Reference Figure 3 and Figure 4One end of the lower flange 4424 of the coupling is coaxially connected to the vertical output shaft of the right-angle reducer 4423, and the other end is connected to the main bending wheel shaft 4425 through an eccentric coupling. The main bending wheel shaft 4425 is coaxially set with the bending wheel body 42. The connecting block 4426 is bolted to the main bending wheel shaft 4425 and is located below the bending wheel body 42. The lower end of the bending rod 441 is welded and fixed to the connecting block 4426. An external power supply provides power for the bending servo motor 4422. The output shaft of the bending servo motor 4422 changes the direction of torque transmission through the right-angle reducer 4423, causing the lower flange 4424 of the coupling to rotate. Through the lower flange 4424 of the coupling and the eccentric coupling, the main bending wheel shaft 4425 is driven to rotate. While the main bending wheel shaft 4425 rotates, the bending rod 441 is driven to rotate through the connecting block 4426, thus completing the pipe bending action.

[0077] Reference Figure 4 In order to quickly cool the softened pipe and reduce the possibility of deformation caused by gravity or external force from the next bend after the pipe is bent, the bending assembly 4 also includes a cooling unit 45. The cooling unit 45 is connected to the mounting plate 41, and the air outlet of the cooling unit 45 is set towards the bend of the pipe to cool the pipe after the bend is completed.

[0078] Reference Figure 4 The cooling unit 45 includes an air supply rod 451 and an air outlet rod 452. Both the air supply rod 451 and the air outlet rod 452 are connected to the mounting plate 41 and are hollow inside. One end of the air supply rod 451 is used to communicate with a cold air source, and the other end is connected to the air outlet rod 452. The air outlet rod 452 has multiple air outlet holes facing the bend of the pipe. In order to improve the cooling effect and cooling speed, the air outlet rod 452 is coaxially arranged with the bending wheel body 42. In this application, the end of the air supply rod 451 away from the air outlet rod 452 can be directly connected to the cold air outlet of the air refrigeration equipment, or it can be connected to the cold air outlet of the vortex tube for hot and cold gas diversion. As long as cold air can be input into the air supply rod 451, it is acceptable. In this embodiment, a vortex tube structure is selected.

[0079] Reference Figure 4 In order to cut off the current pipe product and the pipe after the current pipe product is bent, the bending assembly 4 also includes a cutting unit 46, which is disposed on the mounting plate 41 and is used to cut off the pipe.

[0080] Reference Figure 4The cutting unit 46 includes a cutter 461 and a cutting drive cylinder 462. The cylinder body of the cutting drive cylinder 462 is bolted to the mounting plate 41, and the piston rod of the cutting drive cylinder 462 is welded to the cutter 461. The cutting drive cylinder 462 is located above the cutter 461 and is used to drive the cutter 461 to move toward the pipe. There is a sliding gap between the cutter 461 and the mounting plate 41. The cutter 461 can be located on the side of the mounting plate 41 away from the bending wheel body 42, or it can be located on the side of the mounting plate 41 closer to the bending wheel body 42. In this application, the cutter 461 is set between the mounting plate 41 and the bending wheel body 42. Compared with setting the cutter 461 on the side of the mounting plate 41 away from the bending wheel body 42, when the length of the pipe tail is less than the thickness of the mounting plate 41, the pipe product cannot be cut and further separate cutting is required, which makes the pipe bending process more complicated and more expensive.

[0081] Reference Figure 5 One end of the telescopic unit 5 is connected to the mounting plate 41, and the other end is connected to the rotating disk 2. It is used to drive the mounting plate 41 toward or away from the heating cylinder 01. The telescopic unit 5 includes a fixing strip 51, a sliding strip 52, and a telescopic cylinder 53. The number of fixing strips 51 and sliding strips 52 is the same, and the number of fixing strips 51 is at least one. In this application, the fixing strip 51 can be one, two, or three. In order to achieve stable operation of the mounting plate 41, the number of fixing strips 51 is two. The two fixing strips 51 are respectively set on opposite sides of the mounting plate 41. One end of the fixing strip 51 is welded to the rotating disk 2, and reinforcing ribs are welded between the fixing strip 51 and the rotating disk 2, and between the sliding strip 52 and the mounting plate 41.

[0082] Reference Figure 5 The sliding strip 52 is slidably connected to the fixed strip 51, and one end of the sliding strip 52 away from the rotating disk 2 is welded and fixed to the mounting plate 41. The other end of the sliding strip 52 away from the rotating disk 2 is bolted to the receiving box 4421. The cylinder body of the telescopic cylinder 53 is bolted to the mounting plate 41, and the piston rod of the telescopic cylinder 53 is bolted to the rotating disk 2. The axial direction of the piston rod of the telescopic cylinder 53 and the sliding direction of the sliding strip 52 are both consistent with the axial direction of the heating cylinder 01. When the piston rod of the telescopic cylinder 53 extends, the sliding strip 52 slides on the fixed strip 51. While the sliding strip 52 slides, it drives the mounting plate 41 to move. Through the mounting plate 41, the bending wheel body 42 moves towards the end away from the heating cylinder 01 until the pipe is pulled out to the target length.

[0083] Reference Figure 5 and Figure 6After the bending wheel body 42, together with the telescopic unit 5, pulls the pipe out of the heating cylinder 01 into place, the bending wheel body 42 needs to retract to the bending area of ​​the pipe. At this time, the pipe loses the clamping and fixing of the external force and will swing, which will greatly affect the pipe processing quality and the difficulty of equipment programming. Therefore, the integrated head of the pipe bending machine also includes a clamping unit 6. The clamping unit 6 is set between the mounting plate 41 and the rotating disk 2, and the clamping unit 6 is used to clamp and fix the pipe.

[0084] Reference Figure 6 The clamping unit 6 includes a clamping drive assembly 62 and two clamping plates 61. The clamping plates 61 are located between the bending wheel body 42 and the heating cylinder 01. The clamping plate 61 has a clamping half hole 611 on the side near the pipe. The two clamping plates 61 are respectively arranged on opposite sides of the pipe, and the two clamping half holes 611 form a clamping hole for the pipe to pass through.

[0085] Reference Figure 6 During the process from when the pipe is pulled out of the heating cylinder 01 until it is bent, its temperature will drop due to the influence of the ambient temperature and the cooling gas at the front bend. After the pipe is bent, it will be difficult to pass the heat deformation test, resulting in product failure. This temperature drop is particularly noticeable when the distance between the two bends on the pipe is close. In order to greatly shorten the dead zone of pipe heating and softening and greatly improve the heat deformation resistance of the pipe bend, the heating cylinder 01 is provided with a sliding cavity for the clamping plate 61 to slide. The clamping plate 61 is slidably connected to the heating cylinder 01.

[0086] Reference Figure 6 The clamping drive assembly 62 is mounted on the heating cylinder 01 and is used to connect with the clamping plate 61 to change the distance between the two clamping plates 61. The clamping drive assembly 62 includes a hinged push rod 621, a T-shaped pull rod 622, a transmission lever 623, and a clamping drive cylinder 624. There are two hinged push rods 621. The clamping plate 61 is located between the two hinged push rods 621. The hinged push rod 621 is rotatably connected to the heating cylinder 01, and the rotation axis of the hinged push rod 621 is consistent with the axis of the heating cylinder 01. One end of the hinged push rod 621 abuts against the side of the clamping plate 61 away from the pipe. A spring is provided between the clamping plate 61 and the side wall of the sliding cavity. The two ends of the spring are welded and fixed to the side wall of the clamping plate 61 and the side wall of the sliding cavity, respectively.

[0087] Reference Figure 6The horizontal section of the T-shaped pull rod 622 simultaneously abuts against one end of two hinged push rods 621, and the vertical section of the T-shaped pull rod 622 is slidably connected to the heating cylinder 01. There are multiple transmission levers 623. In this application, the number of transmission levers 623 can be two, three, or four, as long as the T-shaped pull rod 622 can be moved to make way for the bending unit 44. In this embodiment, there are two transmission levers 623. The transmission levers 623 are rotatably connected to the heating cylinder 01, and the rotation axis of the transmission levers 623 is set horizontally and perpendicular to the axis of the heating cylinder 01. The two transmission levers 623 are set along the axis of the heating cylinder 01, and the two adjacent transmission levers 623 abut against each other end to end. One end of the transmission lever 623 near the bending wheel body 42 is hinged to the vertical section of the T-shaped pull rod 622.

[0088] Reference Figure 6 The clamping drive cylinder 624 is located at the end of the transmission lever 623 away from the bending wheel body 42. The cylinder body of the clamping drive cylinder 624 is connected to the end of the transmission lever 623 away from the bending wheel body 42, and the piston rod of the clamping drive cylinder 624 is used to abut against the outer wall of the heating cylinder 01.

[0089] Reference Figure 6 To further shorten the heat exchange between the outside air and the pipe at the clamping plate 61, and to reduce the impact of environmental dust on the pipe, the clamping unit 6 also includes an annular sealing cylinder 63 and a sealing cover plate 64. The annular sealing cylinder 63 is coaxially bonded and fixed to the heating cylinder 01, and the vertical section of the T-shaped tie rod 622 extends out and is slidably connected to the annular sealing cylinder 63. The sealing cover plate 64 is bolted to the annular sealing cylinder 63, and the sealing cover plate 64 is slidably connected to the side of the clamping plate 61 away from the heating cylinder 01 to improve the sliding stability of the clamping plate 61. The sealing cover plate 64 is provided with a through hole for the pipe to pass through.

[0090] The implementation principle of the integrated head of the pipe bending machine in this application embodiment is as follows: when the pipe material on the coil is separated from the coil and enters the inner cavity of the heating cylinder 01 for heating and softening, the pipe loses the conveying power of the rear feeding unit. At this time, the finger cylinder 431 drives the slider 433 to slide on the linear slide rail 432. The slider 433 drives the bending wheel body 42 to move, so that the two bending wheel bodies 42 move towards each other, thereby clamping the pipe.

[0091] The piston rod of the telescopic cylinder 53 extends, causing the sliding bar 52 to slide on the fixed bar 51. As the sliding bar 52 slides, it drives the mounting plate 41 and the receiving box 4421 to move. The mounting plate 41 drives the bending wheel body 42 to move towards the end away from the heating cylinder 01 until the pipe is pulled out to the target length.

[0092] At this time, the piston rod of the clamping drive cylinder 624 extends and abuts against the outer wall of the heating cylinder 01. The cylinder body of the clamping drive cylinder 624 drives the T-shaped pull rod 622 to move through the transmission structure composed of multiple transmission levers 623. The T-shaped pull rod 622 simultaneously drives the two hinged push rods 621 to rotate, thereby causing the clamping plate 61 to overcome the tension of the spring and move towards the pipe side until the pipe is clamped and fixed.

[0093] Then, the retraction unit 5 retracts the bending wheel body 42 until it reaches the preset bending position of the pipe. The bending unit 44 then operates, causing the pipe to wrap around and conform to the inner wall of the pipeline groove, resulting in a bend in the pipe. Subsequently, the control unit 43 drives the two bending wheel bodies 42 to move towards each other, reducing the width of the pipeline groove. As the two bending wheel bodies 42 move towards each other, they simultaneously compress and soften the pipe, making the width of the pipe along the radial direction of the bending wheel body 42 smaller and the thickness along the radial direction of the bending wheel body 42 larger, ensuring the size of the opening at the pipe bend. Then, the cooling unit 45 cools and shapes the pipe bend. After the bending process of this product is completed, the cutting unit 46 cuts the pipe. The above steps are repeated until all the pipe in the heating cylinder 01 is extracted for processing.

[0094] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An integrated head for a pipe bending machine, characterized in that: include A base plate (1) is rotatably connected to a rotating disk (2). The rotating disk (2) is coaxial with and offset from the heating cylinder (01). A rotating unit (3) is connected to the base plate (1). The rotating unit (3) is connected to the rotating disk (2) and is used to drive the rotating disk (2) to rotate. Bending assembly (4), the bending assembly (4) is disposed on the side of the base plate (1) near the rotating disk (2), and the bending assembly (4) is used to bend the pipe and realize the clamping and release of the pipe; Telescopic unit (5), one end of which is connected to the bending assembly (4) and the other end of which is connected to the rotating disk (2), is used to drive the bending assembly (4) toward or away from the rotating disk (2); It also includes a clamping unit (6), which includes two clamping plates (61) and a clamping drive assembly (62), which is used to change the distance between the two clamping plates (61); The bending assembly (4) includes a mounting plate (41); The telescopic unit (5) includes A fixing strip (51), wherein the number of fixing strips (51) is at least one, and the fixing strip (51) is connected to the rotating disk (2); The sliding bar (52) has at least one number, and the sliding bar (52) is slidably connected to the fixed bar (51), and the end of the sliding bar (52) away from the rotating disk (2) is connected to the mounting plate (41); Telescopic cylinder (53), the cylinder body of the telescopic cylinder (53) is connected to the mounting plate (41), the piston rod of the telescopic cylinder (53) is connected to the rotating disk (2), and the axial direction of the piston rod of the telescopic cylinder (53) and the sliding direction of the sliding bar (52) are both consistent with the axial direction of the heating cylinder (01).

2. The integrated head of the pipe bending machine according to claim 1, characterized in that: The clamping plate (61) is slidably connected to the discharge end of the heating cylinder (01), and the clamping plate (61) has a clamping half hole (611) on the side near the pipe. The two clamping plates (61) are located on opposite sides of the pipe, and the two clamping half holes (611) form a clamping hole for the pipe to pass through. The clamping drive assembly (62) is installed on the heating cylinder (01), and the clamping drive assembly (62) is used to connect with the clamping plate (61) to change the distance between the two clamping plates (61). The clamping drive assembly (62) is staggered from the bending assembly (4).

3. The integrated head of the pipe bending machine according to claim 2, characterized in that: The clamping drive assembly (62) includes Two hinged push rods (621) are rotatably connected to the heating cylinder (01). One end of the hinged push rod (621) abuts against the side of the clamping plate (61) away from the pipe, and a spring is provided between the clamping plate (61) and the side wall of the sliding cavity. T-shaped tie rod (622), the horizontal section of which simultaneously abuts against one end of the two hinged push rods (621), and the vertical section of which is used to slide with the heating cylinder (01); Multiple transmission levers (623) are rotatably connected to the heating cylinder (01). The multiple transmission levers (623) are arranged along the axial direction of the heating cylinder (01), and the ends of two adjacent transmission levers (623) abut against each other. One end of the transmission lever (623) near the bending assembly (4) is hinged to the vertical section of the T-shaped tie rod (622). A clamping drive cylinder (624) is connected to one end of the transmission lever (623) away from the bending assembly (4), and the piston rod of the clamping drive cylinder (624) is used to abut against the outer wall of the heating cylinder (01).

4. The integrated head of the pipe bending machine according to claim 3, characterized in that: The clamping unit (6) also includes An annular sealing cylinder (63) is coaxially connected to the heating cylinder (01), and the vertical section of the T-shaped tie rod (622) extends out and is slidably connected to the annular sealing cylinder (63); A sealing cover plate (64) is detachably and fixedly connected to the annular sealing cylinder (63), and the sealing cover plate (64) is slidably connected to the clamping plate (61) on the side away from the heating cylinder (01). A through hole for the pipe to pass through is provided on the sealing cover plate (64).

5. The integrated head of the pipe bending machine according to any one of claims 1-4, characterized in that: Two bending wheel bodies (42) are slidably connected to the mounting plate (41). The sliding axes of the two bending wheel bodies (42) are collinear, and a semi-groove (421) is provided on the bending wheel body (42). The semi-groove (421) on the two bending wheel bodies (42) forms a pipeline groove, and the pipeline passes through the mounting plate (41) and extends into the pipeline groove. Control unit (43), the control unit (43) is mounted on the mounting plate (41), and the control unit (43) is simultaneously connected to the two bending wheel bodies (42) for controlling the two bending wheel bodies (42) to face each other or move away from each other; A bending unit (44) is disposed below the bending wheel body (42), and the bending unit (44) is used to make the pipe wrap around and fit into the pipeline groove; A cooling unit (45) is connected to the mounting plate (41) and is used to blow cold air to the bend of the pipe. A cutting unit (46) is disposed on the mounting plate (41) and is used to cut off the pipe.

6. The integrated head of the pipe bending machine according to claim 5, characterized in that: The control unit (43) includes Finger cylinder (431), the finger cylinder (431) is located on one side of the bending wheel body (42), and the finger cylinder (431) is connected to the mounting plate (41); Multiple linear slide rails (432) are connected to the mounting plate (41), and the multiple linear slide rails (432) are arranged along their own width direction. Two sliders (433) are slidably connected on the linear slide rails (432). The two sliders (433) are respectively connected to the two bending wheel bodies (42), and the sliding direction of the sliders (433) is consistent with the axial direction of the bending wheel body (42). The two sliders (433) on the linear slide rails (432) near the finger cylinder (431) are respectively hinged to the two output ends of the finger cylinder (431).

7. The integrated head of the pipe bending machine according to claim 5, characterized in that: The bending unit (44) includes A bending rod (441) is provided with an arc-shaped groove adapted to the outer diameter of the pipe on the side of the bending wheel body (42) and the rotation axis of the bending rod (441) is coaxial with the central axis of the bending wheel body (42). A bending drive assembly (442) is located below the bending rod (441) and is connected to the bending rod (441) for driving the bending rod (441) to rotate.

8. The integrated head of the pipe bending machine according to claim 5, characterized in that: The cutting unit (46) includes A cutter (461) is provided with a sliding gap between the cutter (461) and the mounting plate (41), and the cutter (461) is disposed between the mounting plate (41) and the bending wheel body (42); A cut-off drive cylinder (462) is connected to the mounting plate (41), and the piston rod of the cut-off drive cylinder (462) is connected to the cutter (461) for driving the cutter (461) to move toward the pipe.

9. The integrated head of the pipe bending machine according to claim 1, characterized in that: The rotating unit (3) includes A rotary servo motor (31) is mounted on the base plate (1), and the output shaft of the rotary servo motor (31) is aligned with the axis of the rotating disk (2). The drive wheel (32) is coaxially connected to one end of the output shaft of the rotary servo motor (31) that passes through the base plate (1); A transmission belt (33) is fitted onto the rotating disk (2) and the drive wheel (32) to realize the transmission between the drive wheel (32) and the rotating disk (2).

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