Hydraulic elbow forming machine for pipe machining

Abstract

The invention relates to the technical field of hydraulic pressure, and particularly discloses a hydraulic elbow forming machine for pipe processing, which comprises an equipment bottom plate, the bottom of the equipment bottom plate is fixedly connected with an equipment bracket, and the top of the equipment bottom plate is fixedly connected with a fixing device; protective devices are fixedly connected to the parts, located on the two sides of the fixing device, of the top of the equipment bottom plate, a driving assembly is fixedly connected to the side face of the upper top plate, the bottom of the lower bottom plate is fixedly connected with the top of the equipment bottom plate, the driving assembly drives the upper top plate to rotate, and the upper top plate rotates along the top of the lower bottom plate; the upper top plate and the lower bottom plate rotate relatively so as to drive the multiple sets of supporting devices to move, and the hydraulic elbow forming machine for pipe machining achieves the purpose of stably fixing pipes of various diameters.

Description

Technical Field

[0001] This invention relates to the field of hydraulic technology, specifically to a hydraulic elbow forming machine for pipe processing. Background Technology

[0002] Elbows are indispensable key connectors in industrial pipeline systems, widely used in petrochemical, natural gas, power, shipbuilding, and aerospace industries. Traditional elbow manufacturing technology mainly involves placing the pipe blank into a mold and directly stamping it using a large press. This method is highly efficient, but it requires extremely high mold strength and equipment tonnage, and is particularly unsuitable for large-diameter, thin-walled pipe fittings, easily resulting in defects such as wrinkling and cracking. As industrial development continuously increases the requirements for the safety, efficiency, and economy of pipeline systems, the limitations of the above-mentioned traditional processes are becoming increasingly apparent. Therefore, hydraulic forming technology, as an advanced flexible manufacturing technology, has been introduced into the field of pipe fitting processing. The basic principle of hydraulic pipe bending / elbow forming technology is to use liquid as a force transmission medium. By applying ultra-high pressure to the inside of the sealed pipe blank, the pipe material undergoes plastic deformation under the constraint of the mold cavity, ultimately fitting into the mold to form the required shape. Although hydraulic forming technology has significant advantages over traditional methods, such as high forming accuracy, uniform wall thickness distribution, good surface quality, and high material utilization, existing hydraulic elbow forming machines still have some common problems. Under ultra-high pressure (usually exceeding 100 MPa), the mold closing mechanism (especially in equipment used for large elbow processing) is prone to elastic deformation or even plastic deformation, leading to mold misalignment ("mold running"), producing defective or even scrap products. Axial sealing at both ends of the pipe blank is a technical challenge in hydraulic forming. Under the dual effects of high pressure and axial contraction of the material, the seals are prone to failure, leading to high-pressure liquid leakage, which not only interrupts production but also poses safety hazards.

[0003] Current hydroforming technology lacks flexible fixtures for cylindrical tubular workpieces, and there is a risk of injury during operation. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic elbow forming machine for pipe processing, comprising a base plate, a support fixedly connected to the bottom of the base plate, a fixing device fixedly connected to the top of the base plate, protective devices fixedly connected to the portions of the top of the base plate on both sides of the fixing device, a hydraulic rod support fixedly connected to the top of the base plate, a fixed end of a forming hydraulic rod fixedly connected to the top of the inner wall of the hydraulic rod support, a protective bracket fixedly connected to the movable end of the forming hydraulic rod, and the protective bracket positioned above the protective device; The fixing device includes a lower base plate with an arc-shaped groove on its top. An upper top plate is rotatably connected to the top of the lower base plate, and a straight groove is provided on its top. A support device is slidably connected to the top of the upper top plate. A drive assembly is fixedly connected to the side of the upper top plate. The bottom of the lower base plate is fixedly connected to the top of the equipment base plate. The drive assembly drives the upper top plate to rotate, and the upper top plate rotates along the top of the lower base plate. The relative rotation between the upper top plate and the lower base plate drives multiple sets of support devices to move. The workpiece is placed directly on the top of the upper top plate. The workpiece's own weight drives the drive assembly to move, which in turn moves the support devices to fix the workpiece, thus maintaining workpiece stability during hydroforming.

[0005] Preferably, the support device includes a sliding base, a limiting rod fixedly connected to the bottom of the sliding base, a limiting ring sleeved and fixedly connected to the bottom side of the limiting rod, first sliding strips fixedly connected to both sides of the bottom of the sliding base, a sliding seat fixedly connected to the top of the sliding base, a sliding groove formed on the top of the sliding seat, a sliding hole formed on the side of the sliding seat, a fixed end of a first spring rod fixedly connected to the inner wall side of the sliding groove, a support assembly fixedly connected to the movable end of the first spring rod, the limiting rod extending into the interior of the straight sliding groove and slidingly connected to the upper top plate, and the limiting rod extending into the interior of the arc-shaped sliding groove and slidingly connected to the lower bottom plate.

[0006] Preferably, the support assembly includes a sliding block, an extension plate fixedly connected to the side of the sliding block, and a support column fixedly connected to the top end of the extension plate away from the sliding block. The side of the sliding block is fixedly connected to the movable end of the first spring rod. The side of the extension plate passes through the side of the sliding hole and is slidably connected to the sliding seat. The rotation of the lower base plate and the upper top plate drives the movement of the limiting rod, which in turn drives the movement of the sliding seat. The movement of the sliding seat drives the movement of the first spring rod, which in turn drives the sliding block. The movement of the sliding block causes the extension plate to slide along the inner wall of the sliding hole, thereby driving the support column to move. When the workpiece is placed on the top of the upper top plate, the overall movement of the sliding base drives the movement of the first spring rod, which in turn drives the support column to contact the side of the workpiece through the elastic force of the first spring rod, thereby fixing the workpiece. The angle design of the sliding seat makes the support column point to the rotation center of the upper top plate, so that the support column maintains contact with workpieces of different diameters, thereby performing hydraulic forming of pipes of different diameters. The movement design of the support column adapts to pipes of different diameters.

[0007] Preferably, the drive assembly includes a main hydraulic rod, with a connecting pipe at the bottom of the fixed end of the main hydraulic rod, and a connecting pipe at the end of the connecting pipe away from the main hydraulic rod connected to the fixed end of an auxiliary hydraulic rod. A connecting frame is fixedly connected to the side of the fixed end of the main hydraulic rod, and a support seat is fixedly connected to the movable end of the main hydraulic rod. The fixed end of the auxiliary hydraulic rod is rotatably connected to the bottom of the lower base plate, and the movable end of the auxiliary hydraulic rod is rotatably connected to the side of the upper top plate via a bracket. The top of the connecting frame is fixedly connected to the bottom of the lower base plate, and the support seat passes through the top of the lower base plate and is slidably connected to the lower base plate.

[0008] Preferably, the support base includes a rubber column with a support shell at its top. An anti-slip groove is fixedly connected to the top of the inner wall of the rubber column, and the bottom of the anti-slip groove is fixedly connected to the movable end of the main hydraulic rod. The bottom support of the workpiece contacts the top of the support shell, and the support shell provides anti-slip protection for the workpiece. The flexible connection of the rubber column avoids the rigid connection of the workpiece placement, thus preventing workpiece damage. The weight of the workpiece causes the movable end of the main hydraulic rod to descend, thereby driving the hydraulic oil inside the main hydraulic rod to enter the interior of the auxiliary hydraulic rod through the connecting pipe. This drives the auxiliary hydraulic rod to move the upper top plate, causing the upper top plate to rotate along the top of the lower bottom plate, thus causing the sliding base to move synchronously. When hydraulic forming is performed, the pressure of the hydraulic rod is directly applied to the top of the workpiece. The pressure of the hydraulic rod continuously applies pressure to the top of the support shell during hydraulic forming, thereby supporting the side of the workpiece through the transmission path and preventing the workpiece from tipping over.

[0009] Preferably, the protective device includes a second spring rod, the movable end of the second spring rod is fixedly connected to a connecting plate, a sliding plate is fixedly connected to the side of the connecting plate, a second slide bar is fixedly connected to the bottom of the sliding plate, a first slide groove is slidably connected to the side of the second slide bar, an adjustment component is fixedly connected to the bottom of the inner wall of the connecting plate, the bottom of the first slide groove is fixedly connected to the top of the equipment base plate, and the fixed end of the second spring rod is fixedly connected to the top of the equipment base plate.

[0010] Preferably, the adjustment assembly includes a support plate, a rotating sleeve fixedly connected to the bottom of the support plate, a connecting spring fixedly connected to the bottom of the support plate, a rotating column fixedly connected to the end of the connecting spring away from the support plate, a positioning column fixedly connected to the side of the rotating column, a fixing hole adapted to the positioning column on the side of the rotating sleeve, and a fixed connection between the bottom of the rotating column and the bottom of the inner wall of the connecting plate. After the workpiece is placed, the operator pulls the sliding plate, the sliding plate moves and drives the rotating column to move, the sliding plate drives the second slide bar to slide along the top of the first slide groove, thereby generating a spring in the second spring rod. During operation, the elasticity of the sliding plate must be maintained at all times, ensuring that the top and bottom of the support plate are offset. This facilitates the downward pressure of the movable end of the forming hydraulic rod, thus ensuring operator safety. When processing workpieces of different heights, the support plate is rotated, causing the rotating sleeve to rotate. The rotating sleeve rotates along the side of the rotating column, causing the positioning column to move along the inner wall of the fixing hole. This allows the height of the support plate to be adjusted by changing the position of the fixing hole. The elasticity of the connecting spring maintains a downward pulling force on the support plate, thus securing the positioning column inside the fixing hole and preventing it from slipping out.

[0011] This invention provides a hydraulic elbow forming machine for pipe processing. It has the following beneficial effects: 1. The hydraulic elbow forming machine for pipe processing is equipped with an upper top plate drive assembly to drive the upper top plate to rotate. The upper top plate rotates along the top of the lower bottom plate. The upper top plate and the lower bottom plate rotate relative to each other, thereby driving multiple sets of support devices to move. The workpiece is placed directly on the top of the upper top plate. The workpiece's own weight drives the drive assembly to move, thereby driving the support devices to move and fix the workpiece, thus keeping the workpiece stable during hydraulic forming.

[0012] 2. This hydraulic elbow forming machine for pipe processing is equipped with a limit rod. The rotation of the lower base plate and the upper top plate drives the limit rod to move. The movement of the limit rod drives the sliding seat to move. The movement of the sliding seat drives the first spring rod to move. The movement of the first spring rod drives the sliding block to move. The movement of the sliding block drives the extension plate to slide along the inner wall of the sliding hole, thereby driving the support column to move. When the workpiece is placed on the top of the upper top plate, the overall movement of the sliding base drives the first spring rod to move. The elastic force of the first spring rod drives the support column to contact the side of the workpiece, thereby fixing the workpiece. The angle design of the sliding seat makes the support column point to the rotation center of the upper top plate, so that the support column maintains contact with workpieces of different diameters, thereby hydraulically forming pipes of different diameters. The movement design of the support column adapts to pipes of different diameters.

[0013] 3. This hydraulic elbow forming machine for pipe processing is equipped with a support shell. The bottom support of the workpiece contacts the top of the support shell, and the support shell prevents the workpiece from slipping. The flexible connection of the rubber column avoids the rigid connection of the workpiece, thus preventing workpiece damage. The weight of the workpiece drives the moving end of the main hydraulic rod to descend, thereby driving the hydraulic oil inside the main hydraulic rod to enter the interior of the auxiliary hydraulic rod through the connecting pipe. This drives the auxiliary hydraulic rod to move the upper top plate, which in turn rotates along the top of the lower bottom plate, causing the sliding base to move synchronously. When hydraulic forming is performed, the pressure of the hydraulic rod is directly applied to the top of the workpiece. The pressure of the hydraulic rod continuously applies pressure to the top of the support shell during hydraulic forming, thereby supporting the side of the workpiece through the transmission path and preventing the workpiece from tipping over.

[0014] 4. This hydraulic elbow forming machine for pipe processing is equipped with a sliding plate. After the workpiece is placed, the operator pulls the sliding plate, which moves the rotating column. The sliding plate drives the second slide bar to slide along the top of the first slide groove, thereby generating elastic force on the spring of the second spring rod. During operation, the sliding plate must always be kept taut, so that the top and bottom of the support plate are offset, which facilitates the downward pressure of the moving end of the forming hydraulic rod and ensures the safety of the operator. When processing workpieces of different heights, the support plate is rotated, which drives the rotating sleeve to rotate. The rotating sleeve rotates along the side of the rotating column, thereby moving the positioning column along the inner wall of the fixing hole. The height of the support plate can be adjusted by the different positions of the fixing hole, and the elastic force of the connecting spring maintains a downward pulling force on the support plate, so that the positioning column is locked inside the fixing hole, thereby preventing the positioning column from slipping out. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the hydraulic elbow forming machine for pipe processing according to the present invention; Figure 2 This is a schematic diagram of the fixing device structure of the present invention; Figure 3 This is a schematic diagram of the support device structure of the present invention; Figure 4 This is a schematic diagram of the supporting component structure of the present invention; Figure 5 This is a schematic diagram of the drive component structure of the present invention; Figure 6 This is a schematic diagram of the support structure of the present invention; Figure 7 This is a schematic diagram of the protective device structure of the present invention; Figure 8 This is a schematic diagram of the adjusted component structure for the present invention.

[0016] In the diagram: 1. Equipment base plate; 2. Equipment support; 3. Fixing device; 4. Protective device; 5. Hydraulic rod support; 6. Forming hydraulic rod; 7. Protective support; 301. Lower base plate; 302. Arc-shaped slide groove; 303. Upper top plate; 304. Straight slide groove; 305. Support device; 306. Drive assembly; 3051. Sliding base; 3052. Limiting rod; 3053. Limiting ring; 3054. First sliding bar; 3055. Sliding seat; 3056. Sliding groove; 3057. Sliding hole; 3058. First spring rod; 3059. Support assembly; 30591. Sliding block; 30 592. Extension plate; 30593. Support column; 3061. Main hydraulic rod; 3062. Connecting pipe; 3063. Secondary hydraulic rod; 3064. Connecting frame; 3065. Support seat; 30651. Rubber column; 30652. Support shell; 30653. Anti-slip groove; 401. Second spring rod; 402. Connecting plate; 403. Sliding plate; 404. Second slide bar; 405. First slide groove; 406. Adjustment assembly; 4061. Support plate; 4062. Rotating sleeve; 4063. Fixing hole; 4064. Connecting spring; 4065. Rotating column; 4066. Positioning column. Detailed Implementation

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0018] For the first embodiment, please refer to... Figure 1-Figure 2 The present invention provides a technical solution: a hydraulic elbow forming machine for pipe processing, including a base plate 1, a support 2 fixedly connected to the bottom of the base plate 1, a fixing device 3 fixedly connected to the top of the base plate 1, protective devices 4 fixedly connected to the top of the base plate 1 on both sides of the fixing device 3, a hydraulic rod support 5 fixedly connected to the top of the base plate 1, a fixed end of a forming hydraulic rod 6 fixedly connected to the top of the inner wall of the hydraulic rod support 5, a protective support 7 fixedly connected to the movable end of the forming hydraulic rod 6, and the protective support 7 being positioned above the protective device 4; The equipment base plate 1 and equipment bracket 2 provide overall support for the equipment. The fixing device 3 fixes the workpiece and drives the fixing device 3 by the weight of the workpiece itself, thereby forming a self-locking mechanism to prevent workpiece displacement during the hydraulic forming process. The protective device 4 protects the operator to prevent accidental injury during the hydraulic process. The forming hydraulic rod 6 applies hydraulic pressure to the workpiece. The protective bracket 7 fixed on the forming hydraulic rod 6 cooperates with the protective device 4 to prevent accidental downward pressure when the protective device 4 is under the protective bracket 7.

[0019] The fixing device 3 includes a lower base plate 301, an arc-shaped groove 302 on the top of the lower base plate 301, an upper top plate 303 rotatably connected to the top of the lower base plate 301, a straight groove 304 on the top of the upper top plate 303, a support device 305 slidably connected to the top of the upper top plate 303, a drive assembly 306 fixedly connected to the side of the upper top plate 303, and the bottom of the lower base plate 301 fixedly connected to the top of the equipment base plate 1.

[0020] The drive assembly 306 drives the upper top plate 303 to rotate. The upper top plate 303 rotates along the top of the lower bottom plate 301. The upper top plate 303 and the lower bottom plate 301 rotate relative to each other, thereby driving multiple sets of support devices 305 to move. The workpiece is placed directly on the top of the upper top plate 303. The weight of the workpiece drives the drive assembly 306 to move, thereby driving the support devices 305 to move and fix the workpiece, thus keeping the workpiece stable during hydroforming.

[0021] Second embodiment, please refer to Figures 1-4 Based on the first embodiment, the present invention provides a technical solution: the support device 305 includes a sliding base 3051, a limiting rod 3052 is fixedly connected to the bottom of the sliding base 3051, a limiting ring 3053 is sleeved and fixedly connected to the bottom side of the limiting rod 3052, first sliding strips 3054 are fixedly connected to both sides of the bottom of the sliding base 3051, a sliding seat 3055 is fixedly connected to the top of the sliding base 3051, a sliding groove 3056 is opened on the top of the sliding seat 3055, a sliding hole 3057 is opened on the side of the sliding seat 3055, the fixed end of the first spring rod 3058 is fixedly connected to the inner wall side of the sliding groove 3056, a support assembly 3059 is fixedly connected to the movable end of the first spring rod 3058, the limiting rod 3052 extends into the interior of the straight sliding groove 304 and is slidably connected to the upper top plate 303, and the limiting rod 3052 extends into the interior of the arc-shaped sliding groove 302 and is slidably connected to the lower bottom plate 301.

[0022] The support assembly 3059 includes a sliding block 30591, an extension plate 30592 fixedly connected to the side of the sliding block 30591, a support column 30593 fixedly connected to the top of the extension plate 30592 away from the sliding block 30591, the side of the sliding block 30591 fixedly connected to the movable end of the first spring rod 3058, and the side of the extension plate 30592 passing through the side of the sliding hole 3057 and slidably connected to the sliding seat 3055.

[0023] The rotation of the lower base plate 301 and the upper top plate 303 causes the limiting rod 3052 to move. The movement of the limiting rod 3052 causes the sliding seat 3055 to move. The movement of the sliding seat 3055 causes the first spring rod 3058 to move. The movement of the first spring rod 3058 causes the sliding block 30591 to move. The movement of the sliding block 30591 causes the extension plate 30592 to slide along the inner wall of the sliding hole 3057, thereby causing the support column 30593 to move. When the workpiece is placed on the top of the upper top plate 303, it moves through the sliding base 3051. The overall movement of the first spring rod 3058 causes the first spring rod 3058 to move, thereby causing the support column 30593 to contact the side of the workpiece through the elastic force of the first spring rod 3058, thus fixing the workpiece. The angle design of the sliding seat 3055 makes the support column 30593 point to the rotation center of the upper top plate 303, so that the support column 30593 maintains contact with workpieces of different diameters, thereby performing hydraulic forming of pipes of different diameters. The movement design of the support column 30593 is adapted to pipes of different diameters.

[0024] Third embodiment, please refer to Figures 1-6 Based on the second embodiment, the present invention provides a technical solution: the drive assembly 306 includes a main hydraulic rod 3061, a connecting pipe 3062 connected to the bottom of the fixed end of the main hydraulic rod 3061, a connecting pipe 3062 connected to the fixed end of the auxiliary hydraulic rod 3063 at the end of the connecting pipe 3062 away from the main hydraulic rod 3061, a connecting frame 3064 fixedly connected to the side of the fixed end of the main hydraulic rod 3061, a support seat 3065 fixedly connected to the movable end of the main hydraulic rod 3061, a fixed end of the auxiliary hydraulic rod 3063 rotatably connected to the bottom of the lower base plate 301, a movable end of the auxiliary hydraulic rod 3063 rotatably connected to the side of the upper top plate 303 through a bracket, a top of the connecting frame 3064 fixedly connected to the bottom of the lower base plate 301, and a support seat 3065 penetrating the top of the lower base plate 301 and slidably connected to the lower base plate 301.

[0025] The support base 3065 includes a rubber column 30651, a support shell 30652 is provided on the top of the rubber column 30651, and an anti-slip groove 30653 is fixedly connected to the top of the inner wall of the rubber column 30651. The bottom of the anti-slip groove 30653 is fixedly connected to the movable end of the main hydraulic rod 3061.

[0026] The bottom support of the workpiece contacts the top of the support shell 30652, and the support shell 30652 provides anti-slip protection for the workpiece. The flexible connection of the rubber column 30651 avoids the rigid connection of the workpiece placement, thus preventing workpiece damage. The weight of the workpiece drives the movable end of the main hydraulic rod 3061 to descend, thereby driving the hydraulic oil inside the main hydraulic rod 3061 to enter the interior of the auxiliary hydraulic rod 3063 through the connecting pipe 3062. This drives the auxiliary hydraulic rod 3063 to move the upper top plate 303, which in turn causes the upper top plate 303 to rotate along the top of the lower bottom plate 301, thereby causing the sliding base 3051 to move synchronously. When hydraulic forming is performed, the pressure of the hydraulic rod is directly applied to the top of the workpiece. The pressure of the hydraulic rod continuously applies pressure to the top of the support shell 30652 during hydraulic forming, thereby supporting the side of the workpiece through the transmission path and preventing the workpiece from tipping over.

[0027] For the fourth embodiment, please refer to [link / reference]. Figures 1-8 Based on the third embodiment, the present invention provides a technical solution: the protective device 4 includes a second spring rod 401, the movable end of the second spring rod 401 is fixedly connected to a connecting plate 402, the side of the connecting plate 402 is fixedly connected to a sliding plate 403, the bottom of the sliding plate 403 is fixedly connected to a second slide bar 404, the side of the second slide bar 404 is slidably connected to a first slide groove 405, the bottom of the inner wall of the connecting plate 402 is fixedly connected to an adjusting component 406, the bottom of the first slide groove 405 is fixedly connected to the top of the equipment base plate 1, and the fixed end of the second spring rod 401 is fixedly connected to the top of the equipment base plate 1.

[0028] The adjustment assembly 406 includes a support plate 4061, a rotating sleeve 4062 fixedly connected to the bottom of the support plate 4061, a connecting spring 4064 fixedly connected to the bottom of the support plate 4061, a rotating column 4065 fixedly connected to the end of the connecting spring 4064 away from the support plate 4061, a positioning column 4066 fixedly connected to the side of the rotating column 4065, a fixing hole 4063 adapted to the positioning column 4066 on the side of the rotating sleeve 4062, and the bottom of the rotating column 4065 fixedly connected to the bottom of the inner wall of the connecting plate 402.

[0029] After the workpiece is placed, the operator pulls the sliding plate 403. The movement of the sliding plate 403 moves the rotating column 4065, and the sliding plate 403 drives the second sliding strip 404 to slide along the top of the first sliding groove 405, thereby generating elastic force on the spring of the second spring rod 401. During operation, the sliding plate 403 must always be kept taut, so that the top of the support plate 4061 is offset from the bottom of the protective bracket 7, so as to facilitate the downward pressing of the movable end of the forming hydraulic rod 6, thereby ensuring the safety of the operator. When processing workpieces of different heights, the rotation... The rotating support plate 4061 rotates, causing the rotating sleeve 4062 to rotate. The rotating sleeve 4062 rotates along the side of the rotating column 4065, thereby causing the positioning column 4066 to move along the inner wall of the fixing hole 4063. The height of the support plate 4061 is adjusted by different positions of the fixing hole 4063. The elastic force of the connecting spring 4064 maintains a downward pulling force on the support plate 4061, thereby making the positioning column 4066 stuck inside the fixing hole 4063, thus preventing the positioning column 4066 from slipping out.

[0030] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A hydraulic elbow forming machine for pipe processing, characterized in that: The equipment includes a base plate (1), a support (2) is fixedly connected to the bottom of the base plate (1), a fixing device (3) is fixedly connected to the top of the base plate (1), a protective device (4) is fixedly connected to the top of the base plate (1) on both sides of the fixing device (3), a hydraulic rod support (5) is fixedly connected to the top of the base plate (1), a fixed end of a forming hydraulic rod (6) is fixedly connected to the top of the inner wall of the hydraulic rod support (5), a protective bracket (7) is fixedly connected to the movable end of the forming hydraulic rod (6), and the protective bracket (7) is positioned above the protective device (4). The fixing device (3) includes a lower base plate (301), an arc-shaped groove (302) is provided on the top of the lower base plate (301), an upper top plate (303) is rotatably connected to the top of the lower base plate (301), a straight groove (304) is provided on the top of the upper top plate (303), a support device (305) is slidably connected to the top of the upper top plate (303), a drive assembly (306) is fixedly connected to the side of the upper top plate (303), and the bottom of the lower base plate (301) is fixedly connected to the top of the equipment base plate (1).

2. The hydraulic elbow forming machine for pipe processing according to claim 1, characterized in that: The support device (305) includes a sliding base (3051), a limiting rod (3052) is fixedly connected to the bottom of the sliding base (3051), a limiting ring (3053) is sleeved and fixedly connected to the bottom side of the limiting rod (3052), a first slide bar (3054) is fixedly connected to both sides of the bottom of the sliding base (3051), a sliding seat (3055) is fixedly connected to the top of the sliding base (3051), and a sliding groove (3056) is opened on the top of the sliding seat (3055). The sliding seat (3055) has a sliding hole (3057) on its side. The inner wall of the sliding groove (3056) is fixedly connected to the fixed end of the first spring rod (3058). The movable end of the first spring rod (3058) is fixedly connected to the support assembly (3059). The limiting rod (3052) extends into the interior of the straight sliding groove (304) and is slidably connected to the upper top plate (303). The limiting rod (3052) extends into the interior of the arc-shaped sliding groove (302) and is slidably connected to the lower bottom plate (301).

3. The hydraulic elbow forming machine for pipe processing according to claim 2, characterized in that: The support assembly (3059) includes a sliding block (30591), an extension plate (30592) is fixedly connected to the side of the sliding block (30591), a support column (30593) is fixedly connected to the top of the extension plate (30592) away from the sliding block (30591), the side of the sliding block (30591) is fixedly connected to the movable end of the first spring rod (3058), and the side of the extension plate (30592) passes through the side of the sliding hole (3057) and is slidably connected to the sliding seat (3055).

4. The hydraulic elbow forming machine for pipe processing according to claim 1, characterized in that: The drive assembly (306) includes a main hydraulic rod (3061), the bottom of the fixed end of the main hydraulic rod (3061) is connected to a connecting pipe (3062), the end of the connecting pipe (3062) away from the main hydraulic rod (3061) is connected to the fixed end of the auxiliary hydraulic rod (3063), a connecting frame (3064) is fixedly connected to the side of the fixed end of the main hydraulic rod (3061), and a support base (3065) is fixedly connected to the movable end of the main hydraulic rod (3061).

5. The hydraulic elbow forming machine for pipe processing according to claim 4, characterized in that: The fixed end of the auxiliary hydraulic rod (3063) is rotatably connected to the bottom of the lower base plate (301), the movable end of the auxiliary hydraulic rod (3063) is rotatably connected to the side of the upper top plate (303) through the bracket, the top of the connecting frame (3064) is fixedly connected to the bottom of the lower base plate (301), and the support seat (3065) passes through the top of the lower base plate (301) and is slidably connected to the lower base plate (301).

6. The hydraulic elbow forming machine for pipe processing according to claim 4, characterized in that: The support base (3065) includes a rubber column (30651), the top of which is provided with a support shell (30652), and the top of the inner wall of the rubber column (30651) is fixedly connected with an anti-slip groove (30653). The bottom of the anti-slip groove (30653) is fixedly connected to the movable end of the main hydraulic rod (3061).

7. The hydraulic elbow forming machine for pipe processing according to claim 1, characterized in that: The protective device (4) includes a second spring rod (401), the movable end of the second spring rod (401) is fixedly connected to a connecting plate (402), the side of the connecting plate (402) is fixedly connected to a sliding plate (403), the bottom of the sliding plate (403) is fixedly connected to a second slide bar (404), the side of the second slide bar (404) is slidably connected to a first slide groove (405), and the bottom of the inner wall of the connecting plate (402) is fixedly connected to an adjusting component (406).

8. The hydraulic elbow forming machine for pipe processing according to claim 7, characterized in that: The bottom of the first chute (405) is fixedly connected to the top of the equipment base plate (1), and the fixed end of the second spring rod (401) is fixedly connected to the top of the equipment base plate (1).

9. A hydraulic elbow forming machine for pipe processing according to claim 7, characterized in that: The adjustment assembly (406) includes a support plate (4061), a rotating sleeve (4062) fixedly connected to the bottom of the support plate (4061), a connecting spring (4064) fixedly connected to the bottom of the support plate (4061), a rotating column (4065) fixedly connected to the end of the connecting spring (4064) away from the support plate (4061), a positioning column (4066) fixedly connected to the side of the rotating column (4065), a fixing hole (4063) adapted to the positioning column (4066) is opened on the side of the rotating sleeve (4062), and the bottom of the rotating column (4065) is fixedly connected to the bottom of the inner wall of the connecting plate (402).

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