Double-end left and right bending machine

Abstract

This utility model relates to the field of pipe processing technology, and in particular to a double-head left and right pipe bending machine, which achieves high-efficiency and high-precision double-head spatial pipe bending operations. It includes a frame; a feeding mechanism slidably mounted on the frame for clamping, conveying, and positioning the pipe; two sets of bending mechanisms symmetrically arranged and slidably mounted on the left and right sides of the frame via left and right drive mechanisms; each bending mechanism includes a bending die directly driven to rotate by a geared motor; a clamping mechanism is mounted on the rotating shaft of the bending mechanism and rotates synchronously with it, used to clamp the pipe from one side during the bending process; a pressing mechanism is located to the side of the bending mechanism and on the same side as the clamping mechanism, used to cooperate with the clamping mechanism during the bending process to press the pipe from the same side to prevent warping; the left and right drive mechanisms drive the assembly of the bending mechanism, clamping mechanism, and pressing mechanism to move horizontally synchronously to adapt to different bending positions. The device has high integration and strong adaptability.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing technology, and in particular to a double-head left and right pipe bending machine. Background Technology

[0002] Pipe bending is a widely used plastic forming process in modern industry. Traditional pipe bending equipment is mostly a single-head pipe bending machine. For workpieces that need to be bent multiple times and at multiple angles at both ends of the pipe, it is necessary to unload, turn around and re-clamp midway. This not only results in low processing efficiency, but also makes it difficult to ensure the accuracy and consistency of the bending position at both ends, and leads to large errors due to manual operation.

[0003] To improve efficiency, double-head pipe bending machines have emerged on the market. Existing double-head pipe bending machines typically employ two independent bending units arranged symmetrically. However, such equipment still has many limitations when performing complex spatial pipe bending. First, the functions of its clamping and pressing mechanisms are often separated or poorly arranged, for example, located on opposite sides of the bending die. This arrangement, when dealing with spatial pipe bending (i.e., the pipe needs to rotate around its own axis while bending), is prone to uneven stress, leading to warping, displacement, or even cross-sectional distortion of the pipe during the bending process, severely affecting the forming quality.

[0004] Secondly, the feeding mechanism of existing equipment has a single function, usually only able to feed the pipe axially, while the rotational positioning of the pipe depends on the rotation of the entire bending unit. This not only increases the structural complexity and rotational inertia of the bending unit, but also limits the flexible coordination between bending and rotational actions, making it difficult to achieve a high-precision spatial bending path.

[0005] Furthermore, the horizontal movement (adapting to different bending positions) and lifting adjustment (avoiding already bent parts or adapting to different molds) functions of the left and right bending units of traditional double-head pipe bending machines are often separate, requiring two independent drive systems to complete. This results in a bulky equipment structure, complex control, high cost, and difficulty in guaranteeing the accuracy of coordinated motion.

[0006] Therefore, there is an urgent need in this field for a new type of double-head left and right pipe bending machine that can effectively solve the above problems, achieve stable coordination between pipe clamping and pipe pressing during the bending process, integrate feeding, rotation and bending actions into one, and simplify the adjustment mechanism of the left and right stations, thereby significantly improving the efficiency and automation of the equipment while ensuring high precision and high quality pipe bending. Utility Model Content

[0007] The purpose of this invention is to provide a double-head left and right pipe bending machine to achieve high-efficiency and high-precision double-head spatial pipe bending operations.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a double-head left and right pipe bending machine, including a frame, on which a feeding mechanism, a pipe bending mechanism, a pipe clamping mechanism, a pipe pressing mechanism and a left and right drive mechanism are provided; The feeding mechanism is slidably mounted on the frame and includes a spindle that can move axially and rotate about its own axis for clamping, conveying and positioning the pipe. Two sets of the tube bending mechanism are symmetrically arranged and are slidably disposed on the left and right sides of the frame via the left and right drive mechanisms, respectively, and located at the discharge end of the feeding mechanism; the tube bending mechanism includes a bending die directly driven to rotate by a reduction motor; The pipe clamping mechanism is mounted on the rotating shaft of the pipe bending mechanism and rotates synchronously with it, used to clamp the pipe from one side during the pipe bending process; The pipe pressing mechanism is located to the side of the pipe bending mechanism and on the same side as the pipe clamping mechanism. The pipe pressing mechanism includes a pipe pressing component that is driven by a cylinder and guided by a slider and a guide rail to make linear lifting and lowering motion. It is used to work with the pipe clamping mechanism during the pipe bending process to press the pipe from the same side to prevent it from warping. The left and right drive mechanisms are used to drive the assembly consisting of the pipe bending mechanism, the pipe clamping mechanism and the pipe pressing mechanism to move horizontally synchronously to adapt to different pipe bending positions.

[0009] Furthermore, the feeding mechanism includes a feeding trolley, a mandrel, a sliding sleeve, and a clamping jaw; the mandrel is mounted on the feeding trolley, and the clamping jaw is located at the front end of the mandrel; the sliding sleeve is axially slidably sleeved on the outer periphery of the mandrel, and the opening and closing of the clamping jaw is controlled by approaching or moving away from the clamping jaw, thereby achieving clamping and releasing of the pipe.

[0010] Furthermore, the feeding mechanism also includes a first driving mechanism, which is used to drive the feeding trolley to approach or move away from the bending mechanism; the first driving mechanism includes a first motor mounted on the feeding trolley.

[0011] Furthermore, a second drive mechanism is installed on the feeding trolley. The output end of the second drive mechanism is connected to the spindle drive and drives it to rotate around its own axis. The second drive mechanism includes a second motor.

[0012] Furthermore, the pipe bending mechanism includes a connecting block, a reduction motor, a first rotating shaft, an upper bending die, and a lower bending die; The back of the connecting block is connected to the left and right drive mechanisms via a connecting plate. The reduction motor is vertically fixed at the lower end of the connecting block. The lower end of the first rotating shaft is connected to the output end of the reduction motor. The upper end of the first rotating shaft is fixed with the upper bending die and the lower bending die. The upper part of the first rotating shaft is connected to the pipe clamping mechanism. The upper bending die and the lower bending die are respectively provided with a first bending groove and a second bending groove for accommodating the pipe.

[0013] Furthermore, the pipe clamping mechanism includes a first cylinder, a left side plate, a right side plate, and a pipe clamping component. The left side plate is fixed to the upper part of the first rotating shaft. A transmission component is provided between the left side plate and the right side plate. The piston rod of the first cylinder is connected to the middle part of the transmission component. The two ends of the transmission component are connected to the two ends of the pipe clamping component. The first cylinder is connected to the lower part of the left side plate and the right side plate through a fixing strip, and the first cylinder is inclined.

[0014] Furthermore, the pipe clamping component includes a fixing plate and a clamping template. The two ends of the fixing plate are respectively connected to the two ends of the transmission component. The clamping template is fixed on the fixing plate, and the clamping template has a contour groove adapted to the outer contour of the pipe.

[0015] Furthermore, the pressing mechanism includes a second cylinder, a second transmission component, a support plate, and a pressing component; the output end of the second cylinder is hinged to one end of the second transmission component to drive the second transmission component to swing; the other end of the second transmission component is fixedly connected to the support plate to drive the support plate to move; a first slider is provided below the support plate, the first slider is slidably disposed on a first guide rail, and slides in cooperation with the first guide rail, the extension direction of the first guide rail is adapted to the swing trajectory of the second transmission component, providing guidance and support for the movement of the support plate; The bearing plate is provided with a pressing fitting, and the top of the pressing fitting is provided with a pressing groove, the shape of which is adapted to the outer contour of the pipe.

[0016] Furthermore, the left and right drive mechanism includes a mounting plate, a second guide rail is provided on the side of the frame, the mounting plate is slidably mounted on the second guide rail, a lead screw sleeve is fixedly connected to the mounting plate, a first lead screw is passed through the lead screw sleeve, one end of the first lead screw is connected to a first servo motor, the first servo motor drives the first lead screw to rotate, thereby driving the mounting plate to move horizontally left and right along the second guide rail.

[0017] Furthermore, a third guide rail is vertically arranged on the mounting plate, and the connecting plate is slidably connected to the third guide rail via a second slider; The bottom end of the mounting plate is horizontally provided with a fourth guide rail, and a blocking block is slidably provided on the fourth guide rail. The blocking block is connected to a second lead screw, which is driven by a second servo motor to make the blocking block move horizontally along the fourth guide rail. The bottom of the connecting plate is provided with rollers, which are supported on the upper surface of the blocking block. When the blocking block moves horizontally, the rollers roll along the upper surface of the blocking block and drive the connecting plate to perform lifting and lowering operations along the third guide rail.

[0018] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model discloses a double-head left and right pipe bending machine. By arranging the pipe clamping mechanism and the pipe pressing mechanism on the same side of the bending die, the two can work together during the pipe bending process to form a stable area clamping of the pipe from the same side. This effectively overcomes the problems of warping, displacement and cross-sectional deformation that easily occur when the pipe is bent, especially in the case of spatial pipe bending, and significantly improves the forming quality and precision.

[0019] The feeding mechanism integrates axial feeding and rotation around the axis, enabling the conveying and angular positioning of the pipe to be completed continuously in a single station without the need for unloading midway or relying on the pipe bending mechanism to achieve rotation. This simplifies the operation process and achieves efficient and flexible coordination between feeding and bending actions, greatly improving the overall efficiency of pipe bending operations in complex spaces.

[0020] The left and right drive mechanisms employ a single drive system. Through a clever roller-stop block structure, the curved pipe unit assembly can achieve coordinated adjustment in both horizontal movement and vertical lifting. This design simplifies the equipment structure, reduces manufacturing costs, and avoids precision errors caused by multi-system collaborative control, resulting in more accurate and reliable position adjustment.

[0021] This utility model integrates multiple functions such as clamping, feeding, rotation, bending, pressing, and multi-position adjustment into one compact structure. It can not only efficiently complete double-headed pipe bending operations, but also flexibly adapt to different bending positions and complex spatial pipe bending process requirements, making it widely applicable. Attached Figure Description

[0022] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a double-head left and right pipe bending machine provided by this utility model; Figure 2 This is a schematic diagram of the feeding mechanism provided by this utility model; Figure 3 This is a schematic diagram of the pipe bending mechanism provided by this utility model; Figure 4 Here is a schematic diagram (a) of the tube clamping mechanism provided by this utility model. Figure 5 This is a schematic diagram (II) of the tube clamping mechanism provided by this utility model. Figure 6 This is a schematic diagram of the pipe pressing mechanism provided by this utility model; Figure 7 This is a schematic diagram of the left and right drive mechanism provided by this utility model; The reference numerals in the attached figures are explained as follows: 1. Feeding mechanism; 10. Feeding trolley; 11. Mandrel; 12. Sliding sleeve; 13. Clamping jaw; First drive mechanism; 140. First motor; 15. Second drive mechanism; 150. Second motor; 2. Pipe bending mechanism; 20. Connecting block; 21. Gear motor; 22. First rotating shaft; 23. Upper bending die; 24. Lower bending die; 25. Connecting plate; 250. Roller; 3. Pipe clamping mechanism; 30. First cylinder; 31. Left side plate; 32. Right side plate; 33. First transmission component; 34. Fixing strip; 35. Fixing plate; 36. Clamping template; 4. Pipe pressing mechanism; 40. Second cylinder; 41. Second transmission component; 42. Bearing plate; 43. First slider; 44. First guide rail; 45. Pipe pressing component; 450. Pipe pressing groove; 5. Left and right drive mechanism; 50. Mounting plate; 51. Second guide rail; 52. Lead screw sleeve; 53. First lead screw; 54. First servo motor; 55. Third guide rail; 56. Second slider; 57. Fourth guide rail; 58. Blocking block; 59. Second lead screw; 590. Second servo motor. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] See Figures 1-7 The double-head left and right pipe bending machine includes a feeding mechanism 1, a bending mechanism 2, a clamping mechanism 3, a pressing mechanism 4, and a left and right drive mechanism 5, all mounted on the frame. The integration of these mechanisms aims to combine the operational standards of "same-side clamping and pressing coordination," "integrated feeding rotation," and "linked horizontal lifting," thereby achieving efficient pipe bending operations.

[0025] The feeding mechanism 1, as the pipe conveying and positioning unit, integrates three major functions: pipe clamping, axial conveying, and circumferential rotation positioning, and is the foundation for realizing continuous spatial pipe bending. This mechanism can be slidably mounted on the frame and includes a feeding trolley 10, a mandrel 11, a sliding sleeve 12, and a clamping jaw 13.

[0026] Specifically, the mandrel 11 is mounted on the feeding trolley 10, and the clamping jaws 13 are located at the front end of the mandrel 11 for clamping the pipe. The sliding sleeve 12 is axially slidably sleeved on the outer periphery of the mandrel 11. When it slides forward (i.e. towards the pipe bending mechanism 2), it will push the clamping jaws 13 to close, thereby clamping the pipe; when it slides backward, the clamping jaws 13 will loosen, completing the unloading.

[0027] The feeding mechanism 1 is also equipped with a first drive mechanism 14, which includes a first motor 140 mounted on the feeding trolley 10. The first motor 140 drives the feeding trolley 10 to move along the frame guide rail through a gear rack or lead screw and nut transmission method, thereby realizing the precise axial feeding and retraction of the pipe to control the feeding length at different bend positions.

[0028] In addition, to achieve pipe bending, a second drive mechanism 15 is installed on the feeding trolley 10, which also includes a second motor 150. The output end of the second drive mechanism 15 is connected to the mandrel 11 via a coupling or reducer, which can drive the mandrel 11 and the pipe clamped at its front end to rotate precisely around its own axis to meet the requirements of the pipe angle in complex pipe bending processes.

[0029] In this example, the pipe bending mechanism 2 is the core of the bending action. Two sets are symmetrically arranged and are located on the left and right sides of the frame respectively via the left and right drive mechanisms 5. The pipe bending mechanism 2 includes a connecting block 20, a reduction motor 21, a first rotating shaft 22, an upper bending die 23, and a lower bending die 24.

[0030] Specifically, the back of the connecting block 20 is connected to the left and right drive mechanisms 5 via a connecting plate 25, enabling the overall movement of the pipe bending mechanism 2 while also providing a stable support platform for other components. The reduction motor 21 is vertically fixed to the lower end of the connecting block 20, and its output end is directly connected to the lower end of the first rotating shaft 22, thus providing strong torsional force. The upper end of the first rotating shaft 22 is fixed with an upper bending die 23 and a lower bending die 24, with bending grooves on the die body for precisely accommodating and forming the pipe. The upper part of the first rotating shaft 22 is also connected to the pipe clamping mechanism 3 to ensure that the pipe clamping operation can be synchronized with the bending operation.

[0031] The aforementioned pipe clamping mechanism 3 is mounted on the rotating shaft of the pipe bending mechanism 2 and rotates synchronously with the bending die. It is used to laterally clamp the pipe during bending. Specifically, it includes a first cylinder 30, a left side plate 31, a right side plate 32, and a pipe clamping component. The left side plate 31 is fixed to the upper part of the first rotating shaft 22, and the right side plate 32 and left side plate 31 maintain a relative position, together forming the mounting frame of the mechanism. The first cylinder 30 is obliquely mounted below the frame via a fixing strip 34. Its piston rod is hinged to the middle of the first transmission member 33, and both ends of the first transmission member 33 are connected to both ends of the pipe clamping component. When the piston rod of the first cylinder 30 extends or retracts, the linear motion of the cylinder is converted through the lever action of the first transmission member 33, driving the clamping template 36 to move closer to or further away from the pipe, thereby clamping or releasing the pipe.

[0032] The aforementioned pipe clamping fitting includes a fixing plate 35 and a clamping template 36. The two ends of the fixing plate 35 are respectively connected to the two ends of the first transmission member 33. The clamping template 36 is fixed on the fixing plate 35, and the clamping template 36 is provided with a contour groove that matches the outer contour of the pipe, thereby providing a stable clamping force that does not damage the pipe.

[0033] The pipe-pressing mechanism 4 is located to the side of the pipe-bending mechanism 2 and on the same side as the pipe-clamping mechanism 3. It works in conjunction with the clamping mechanism 3 to prevent the pipe from warping or lifting during bending operations. This mechanism includes a second cylinder 40, a second transmission component 41, a support plate 42, and a pipe-pressing component 45. Specifically, the output end of the second cylinder 40 is hinged to one end of the second transmission component 41 to drive the second transmission component 41 to swing. The other end of the second transmission component 41 is fixedly connected to the support plate 42 to drive the support plate 42 to move. A first slider 43 is located below the support plate 42. The first slider 43 is slidably mounted on a first guide rail 44, and the slider slides in cooperation with the guide rail. The extension direction of the first guide rail 44 is adapted to the swing trajectory of the second transmission component 41, thereby providing guidance and support for the movement of the support plate 42.

[0034] The bearing plate 42 is also provided with a pressing fitting 45, and the top of the pressing fitting 45 is provided with a pressing groove 450, the shape of which is adapted to the outer contour of the pipe.

[0035] The left and right drive mechanism 5 is used to drive the assembly of the pipe bending, clamping, and pressing mechanisms to move horizontally and rise vertically, adapting to different pipe bending positions or avoiding bent pipe sections. Specifically, it includes a mounting plate 50, with a second guide rail 51 on the side of the frame, allowing the mounting plate 50 to slide on the second guide rail 52. A lead screw sleeve 52 is fixedly connected to the mounting plate 50, with a first lead screw 53 passing through it. One end of the lead screw is connected to a first servo motor 54, which drives the first lead screw 53 to rotate, thereby causing the mounting plate 50 and all its components to move horizontally left and right along the second guide rail 51.

[0036] A third guide rail 55 is vertically mounted on the mounting plate 50, and the aforementioned connecting plate 25 is slidably connected to the third guide rail 55 via a second slider 56. Furthermore, a fourth guide rail 57 is horizontally mounted at the bottom of the mounting plate 50, and a blocking block 58 is slidably mounted on the fourth guide rail 57. The blocking block 58 is driven by a second lead screw 59, which is driven by a second servo motor 590, causing the blocking block 58 to move horizontally along the fourth guide rail 57.

[0037] A roller 250 is provided at the bottom of the connecting plate 25. The roller 250 is supported on the upper surface of the aforementioned blocking block 58. When the blocking block 58 moves horizontally, the roller 250 can roll along the upper surface of the blocking block 58 and drive the connecting plate 25 to rise or fall. Ultimately, it drives the entire pipe bending machine to achieve smooth lifting and lowering operations along the third guide rail 55, realizing efficient linkage between horizontal and vertical movements.

[0038] The working principle of the double-head left and right pipe bending machine disclosed in this example is as follows: 1. Preparation stage: Material loading and initial positioning The operator loads the pipe to be bent into the feeding mechanism 1, where the clamping jaws 13 hold and fix its end. According to the processing program, the first drive mechanism 14 can drive the feeding trolley 10 to move, initially feeding the pipe to a suitable starting position. At the same time, the left and right drive mechanisms 5 drive the bending execution components on both sides (i.e., the combination of bending, clamping, and pressing mechanisms) to move to the initial bending position set by the program.

[0039] 2. Feeding and Rotary Positioning The feeding mechanism 1 begins precise operation. First, the first motor 140 of the first drive mechanism 14 starts, driving the feeding trolley 10 to move along the frame guide rail via the transmission system, axially conveying the pipe to the preset precise length. Subsequently, if spatial bending is required (i.e., the next bend is not in the same plane), the second motor 150 of the second drive mechanism 15 starts, driving the mandrel 11 and the pipe it holds to rotate around its own axis by a specific angle, positioning the pipe on the correct bending plane. This step integrates "conveying" and "rotation" functions, laying the foundation for complex pipe bending.

[0040] 3. Same-side coordinated clamping and pressing. After the pipe is positioned, the clamping mechanism 3 and the pressing mechanism 4, located on the same side of the bending die, immediately activate to perform "cooperative clamping on the same side".

[0041] Lateral clamping: The first cylinder 30 of the pipe clamping mechanism 3 is activated, and its piston rod drives the clamping template 36 to approach and clamp the pipe through the lever action of the first transmission component 33, thus firmly holding the pipe in the bending groove of the bending die from the side.

[0042] Lateral clamping: Simultaneously, the second cylinder 40 of the clamping mechanism 4 actuates, driving the second transmission component 41 to swing. This swing is converted into precise linear motion of the bearing plate 42 through the "slider-guide rail" pair (first slider 43 and first guide rail 44), driving the clamping component 45 to clamp the pipe from the side.

[0043] At this point, the clamping mechanism 3 and the pressing mechanism 4 form a dual lateral clamping force on the pipe from the same side, together with the bending die, creating a stable clamping area. This layout can most effectively resist the radial warping force generated during pipe bending, fundamentally preventing pipe displacement and deformation.

[0044] 4. Perform bending With the pipe reliably secured, the reduction motor 21 of the pipe bending mechanism 2 starts, directly driving the first rotating shaft 22 and the upper bending die 23 and lower bending die 24 mounted on it to rotate together. Since the pipe clamping mechanism 3 is mounted on the first rotating shaft 22 and rotates synchronously with it, the clamping point always maintains the correct relative position with the bending die during the bending process, ensuring smooth bending action and stable forming quality. The bending die wraps around the pipe until the required bending angle is reached and then stops.

[0045] 5. Loosening and Resetting After the bending action is completed, each actuator resets in sequence: The second cylinder 40 of the clamping mechanism 4 first reverses its action, driving the clamping component 45 to retract and releasing the lateral clamping force.

[0046] Next, the first cylinder 30 of the pipe clamping mechanism 3 reverses its action, driving the clamping template 36 to move backward away from the pipe, thus releasing the lateral clamping force.

[0047] The reduction motor 21 of the tube bending mechanism 2 can rotate in the opposite direction to return the bending die to the initial angle, preparing for the next bending.

[0048] 6. Position adjustment and cyclical operation After completing one pipe bending step, adjust the position according to the requirements of the next pipe bending step: Horizontal adjustment: The first servo motor 54 of the left and right drive mechanism 5 is started, driving the first lead screw 53 to rotate, which in turn drives the entire pipe bending execution assembly (i.e., the combination of pipe bending, pipe clamping and pipe pressing mechanism) to move horizontally along the second guide rail 51 to the new target position.

[0049] Lifting and Avoidance: If it is necessary to avoid a bent pipe section or change the mold, the lifting function of the left and right drive mechanisms 5 is activated. The second servo motor 590 drives the second lead screw 59, causing the blocking block 58 to move horizontally along the fourth guide rail 57. The roller 250 rolls on the special contour surface of the blocking block 58, converting the horizontal motion into the vertical lifting motion of the connecting plate 25, thereby realizing the height adjustment of the entire pipe bending actuator.

[0050] After that, repeat steps 2 to 6 to perform the next feeding, positioning, clamping, and bending operation, and so on, until all the bending processes of the pipe are completed. This process is highly efficient, precise, and stable.

[0051] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A double-head left and right pipe bending machine, comprising a frame, characterized in that, The frame is equipped with a feeding mechanism (1), a pipe bending mechanism (2), a pipe clamping mechanism (3), a pipe pressing mechanism (4), and a left and right drive mechanism (5). The feeding mechanism (1) can be slidably mounted on the frame, and includes a spindle (11) that can move axially and rotate about its own axis for clamping, conveying and positioning the pipe. The bending mechanism (2) is symmetrically arranged in two sets, and is slidably arranged on the left and right sides of the frame through the left and right drive mechanisms (5), and is located at the discharge end of the feeding mechanism (1); the bending mechanism (2) includes a bending die directly driven to rotate by a reduction motor (21); The clamping mechanism (3) is mounted on the rotating shaft of the bending mechanism (2) and rotates synchronously with it, and is used to clamp the pipe from one side during the bending process; The pipe pressing mechanism (4) is located on the side of the pipe bending mechanism (2) and on the same side as the pipe clamping mechanism (3); the pipe pressing mechanism (4) includes a pipe pressing component that is driven by a cylinder and guided by a slider and a guide rail to make a linear lifting motion, which is used to cooperate with the pipe clamping mechanism (3) during the pipe bending process to press the pipe from the same side to prevent it from warping; The left and right drive mechanism (5) is used to drive the assembly consisting of the pipe bending mechanism (2), the pipe clamping mechanism (3) and the pipe pressing mechanism (4) to move horizontally synchronously to adapt to different pipe bending positions.

2. The double-head left and right pipe bending machine according to claim 1, characterized in that, The feeding mechanism (1) includes a feeding trolley (10), a spindle (11), a sliding sleeve (12), and a clamping jaw (13). The mandrel (11) is mounted on the feeding trolley (10), and the clamping jaw (13) is located at the front end of the mandrel (11). The sliding sleeve (12) can be axially slidably sleeved on the outer periphery of the mandrel (11). By approaching or moving away from the clamping jaw (13), the opening and closing of the clamping jaw (13) can be controlled to achieve clamping and loosening of the pipe.

3. The double-head left and right pipe bending machine according to claim 2, characterized in that, The feeding mechanism (1) further includes a first driving mechanism (14), which is used to drive the feeding trolley (10) to approach or move away from the bending mechanism (2); the first driving mechanism (14) includes a first motor (140) mounted on the feeding trolley (10).

4. The double-head left and right pipe bending machine according to claim 2, characterized in that, The feeding trolley (10) is equipped with a second drive mechanism (15). The output end of the second drive mechanism (15) is connected to the spindle (11) and drives it to rotate around its own axis. The second drive mechanism (15) includes a second motor (150).

5. The double-head left and right pipe bending machine according to claim 1, characterized in that, The pipe bending mechanism (2) includes a connecting block (20), a reduction motor (21), a first rotating shaft (22), an upper bending die (23), and a lower bending die (24); The back of the connecting block (20) is connected to the left and right drive mechanism (5) via a connecting plate (25). The reduction motor (21) is vertically fixed at the lower end of the connecting block (20). The lower end of the first rotating shaft (22) is connected to the output end of the reduction motor (21). The upper end of the first rotating shaft (22) is fixed with the upper bending die (23) and the lower bending die (24). The upper part of the first rotating shaft (22) is connected to the pipe clamping mechanism (3). The upper bending die (23) and the lower bending die (24) are respectively provided with a first bending groove and a second bending groove for accommodating the pipe.

6. The double-head left and right pipe bending machine according to claim 5, characterized in that, The pipe clamping mechanism (3) includes a first cylinder (30), a left side plate (31), a right side plate (32), and a pipe clamping component. The left side plate (31) is fixed to the upper part of the first rotating shaft (22). A first transmission component (33) is provided between the left side plate (31) and the right side plate (32). The piston rod of the first cylinder (30) is connected to the middle part of the first transmission component (33). The two ends of the first transmission component (33) are connected to the two ends of the pipe clamping component. The first cylinder (30) is connected to the lower part of the left side plate (31) and the right side plate (32) through a fixing strip (34), and the first cylinder (30) is inclined.

7. The double-head left and right pipe bending machine according to claim 6, characterized in that, The pipe clamping component includes a fixing plate (35) and a clamping template (36). The two ends of the fixing plate (35) are respectively connected to the two ends of the first transmission component (33). The clamping template (36) is fixed on the fixing plate (35), and the clamping template (36) is provided with a contour groove that matches the outer contour of the pipe.

8. The double-head left and right pipe bending machine according to claim 1, characterized in that, The pipe pressing mechanism (4) includes a second cylinder (40), a second transmission component (41), a bearing plate (42), and a pipe pressing component (45). The output end of the second cylinder (40) is hinged to one end of the second transmission member (41) to drive the second transmission member (41) to swing; the other end of the second transmission member (41) is fixedly connected to the support plate (42) to drive the support plate (42) to move; a first slider (43) is provided below the support plate (42), the first slider (43) is slidably disposed on the first guide rail (44) and slides in cooperation with the first guide rail (44), the extension direction of the first guide rail (44) is adapted to the swing trajectory of the second transmission member (41) to provide guidance and support for the movement of the support plate (42); A pressure fitting (45) is provided on the bearing plate (42), and a pressure groove (450) is provided at the top of the pressure fitting (45), the shape of which is adapted to the outer contour of the pipe.

9. The double-head left and right pipe bending machine according to claim 5, characterized in that, The left and right drive mechanism (5) includes a mounting plate (50), and a second guide rail (51) is provided on the side of the frame. The mounting plate (50) is slidably mounted on the second guide rail (51). A lead screw sleeve (52) is fixedly connected to the mounting plate (50). A first lead screw (53) is passed through the lead screw sleeve (52). One end of the first lead screw (53) is connected to a first servo motor (54). The first servo motor (54) drives the first lead screw (53) to rotate, thereby driving the mounting plate (50) to move horizontally left and right along the second guide rail (51).

10. The double-head left and right pipe bending machine according to claim 9, characterized in that, A third guide rail (55) is vertically arranged on the mounting plate (50), and the connecting plate (25) is slidably connected to the third guide rail (55) through a second slider (56); The bottom end of the mounting plate (50) is horizontally provided with a fourth guide rail (57), and a blocking block (58) is slidably provided on the fourth guide rail (57). The blocking block (58) is connected to the second lead screw (59) and the second lead screw (59) is driven by the second servo motor (590) so that the blocking block (58) moves horizontally along the fourth guide rail (57). The bottom of the connecting plate (25) is provided with a roller (250), which is supported on the upper surface of the blocking block (58). When the blocking block (58) moves horizontally, the roller (250) rolls along the upper surface of the blocking block (58) and drives the connecting plate (25) to lift along the third guide rail (55).

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