A multi-angle bending device for stainless steel pipes for automobiles

Abstract

The application discloses a multi-angle bending equipment for stainless steel pipes suitable for automobiles and relates to the field of pipe benders. The equipment comprises a workbench, a hydraulic push rod fixedly installed at the top end of the workbench, a bending machine main body slidingly connected to the top of the workbench, die rollers arranged on both sides in the bending machine main body, a die head fixedly connected to the front end of the hydraulic push rod, an auxiliary assembly arranged on the top of the workbench, and a lubricating assembly arranged on the top of the bending machine main body. The auxiliary assembly comprises a mounting block fixed to the top of the workbench, and the lubricating assembly comprises an oil cylinder fixed to the top end of the bending machine main body. The auxiliary assembly and the cylinder feeding are mutually matched, so that a single large-size steel pipe can be continuously bent into multiple steel pipe fittings. Then, the user can cut the steel pipe fittings into separate fittings in sequence, so that multiple steel pipe fittings can be manufactured in one operation when the bending operation is performed.

Description

Technical Field

[0001] This invention relates to the field of pipe bending machine technology, specifically to a multi-angle bending device for stainless steel pipes adapted for automotive applications. Background Technology

[0002] According to existing information, a pipe bending machine is a machine used for bending pipes. It is suitable for pipe manufacturing in various mechanical manufacturing industries. It can accurately bend steel pipes according to the required curvature radius. Pipe bending machines are roughly divided into CNC pipe bending machines and hydraulic pipe bending machines. Among them, hydraulic pipe bending machines are mostly operated manually, and the feeding, bending and unloading are all manually controlled. CNC pipe bending machines, on the other hand, only need to set the curvature radius value to automatically perform the bending operation. The emergence of pipe bending machines has brought great convenience to the mechanical processing industry, enabling various mechanical processing to bend steel pipes into predetermined curvatures during the manufacturing process of mechanical equipment, thereby facilitating overall layout and assembly, greatly improving the technological sophistication of the mechanical manufacturing industry, and also giving the mechanical manufacturing industry greater room for technological growth.

[0003] Existing authorized patents and existing equipment with the same or similar technologies still have the following problems in daily use:

[0004] Currently, whether it's a hydraulic pipe bending machine or a CNC pipe bending machine, the steel pipe needs to be cut to a predetermined size before bending it. During the bending operation, the user needs to continuously load the steel pipe into the designated position of the bending machine, remove it after bending, and then load a new steel pipe, repeating the above operation continuously. Therefore, each pipe bending machine requires at least one user to assist during operation, which greatly slows down the entire steel pipe bending operation. However, because the shape of the steel pipe after bending is uncontrollable, it is impossible to use automatic loading and unloading equipment to assist in the bending operation. Therefore, although the current pipe bending machine technology is relatively mature, neither highly automated CNC pipe bending machines nor hydraulic pipe bending machines can solve the problem of needing manual assistance for loading and unloading. This is a problem that has not yet been solved for the efficiency-demanding machinery manufacturing industry. Due to the material and wall thickness of the steel pipe, in order to avoid tearing or deformation during the bending process, it is not possible to bend it quickly like stamping, cutting, and other processing methods, which further limits the processing efficiency of the pipe bending machine.

[0005] Meanwhile, because the processing of pipe bending machines is a cold working type, the contact point between the steel pipe and the bending die is subjected to great force. During the bending process, the steel pipe is easily torn or deformed due to the material of the steel pipe itself and the severe wear of the die. This situation increases the material loss of the steel pipe during the operation of the bending machine. Even if there is no visible damage, there will still be invisible damage inside the steel pipe, which will also reduce the performance of the steel pipe and make it easy to break and damage in subsequent use. Summary of the Invention

[0006] The purpose of this application is to solve or at least alleviate the problems existing in the prior art.

[0007] To address the aforementioned shortcomings, the present invention provides the following technical solution: a multi-angle bending device for stainless steel pipes adapted for automobiles, comprising a worktable, a hydraulic push rod fixedly installed at the top of the worktable, a bending machine body slidably connected above the worktable, mold rollers arranged on both sides inside the bending machine body, a mold head fixedly connected to the front end of the hydraulic push rod, an auxiliary component arranged above the worktable, and a lubrication component arranged above the bending machine body.

[0008] The auxiliary component includes a mounting block, which is fixed above the workbench. The auxiliary component uniformly retracts and expands the steel pipe during the bending process, performing the bending operation when retracting and releasing the steel pipe when expanding, thus cooperating with an external feeder to complete the automatic bending operation.

[0009] The lubrication assembly includes an oil cylinder, which is fixed to the top of the bending machine body. The lubrication assembly is used in conjunction with the auxiliary assembly to apply lubricating oil to the die head during the pipe bending operation, thereby reducing the friction force on the steel pipe.

[0010] Furthermore, slots are evenly provided on both sides of the surface of the bending machine body, and the upper and lower ends of the mold roller are inserted and connected to the slots on the bending machine body. The bending machine body and the mold roller are connected as one unit through the slots.

[0011] Furthermore, the auxiliary component also includes a transmission roller, which is laterally rotatably connected to the interior of the mounting block. Both ends of the transmission roller extend to the sides of the mounting block. A gear is fixedly connected to the middle of the surface of the transmission roller, and the gear is also located inside the mounting block. A toothed rod is fixed above the push rod of the hydraulic push rod, and the toothed rod meshes with the gear.

[0012] Furthermore, both sides of the mounting block are slidably connected to pull rods, which are T-shaped. One end of each pull rod extends to the side of the transmission roller on the same side. The bottom end of each transmission roller away from the mounting block is fixedly connected to an abutment block, which contacts the pull rod on the same side. The pull rod is fixedly connected to the back of the bending machine body.

[0013] Furthermore, both sides of the mounting block are rotatably connected to transmission blocks, the ends of the transmission blocks extend to the sides of the transmission rollers, and the bottom end of the transmission blocks is fixedly connected to a push rod. The push rod is inserted into the inside of the pull rod, and the inside of the pull rod is fixedly connected to a slider, which is slidably connected to the push rod.

[0014] Furthermore, the lubrication assembly also includes a piston that is slidably connected to the inside of an oil cylinder. An abutment rod is inserted into the back of the oil cylinder, with its front end extending into the inside of the oil cylinder and fixedly connected to the piston. The end of the abutment rod extends above the mounting block.

[0015] Furthermore, both sides of the oil cylinder are fixed and connected to transmission pipes, which are located in front of the abutment rod. A one-way valve is fixed to the bottom end of the transmission pipe, and the mold roller is fixed and connected to the transmission pipe through the one-way valve.

[0016] Furthermore, the mold roller has an oil outlet groove inside, and the oil outlet groove, the transmission pipe and the one-way valve pipe are interconnected. The oil outlet groove penetrates the surface of the mold roller and communicates with the outside. The oil outlet groove is evenly distributed on the surface of the mold roller.

[0017] Compared with the known prior art, the technical solution provided by this invention has the following beneficial effects:

[0018] 1. By setting up auxiliary components, which work in conjunction with the cylinder feeding mechanism, a single large-sized steel pipe can be continuously bent into multiple steel pipe fittings. The user can then cut the steel pipe fittings into individual parts. This device eliminates the need for frequent feeding, bending, and unloading operations during bending. Multiple steel pipe fittings can be produced in one operation, and can be directly cut according to the size of the fittings. This reduces the manual intervention in the bending operation, saving a lot of time. A single steel pipe can be continuously bent without interrupting the feeding process, making the entire bending operation more seamless.

[0019] 2. The auxiliary components control the bending machine body to drive the die roller and die head to move back and forth continuously, thereby completing bending, releasing, and feeding operations on the steel pipe. It is not limited by the shape of the steel pipe after bending. After the bending machine body and die head are separated from the steel pipe, they can cooperate smoothly with the cylinder to continue feeding, thus smoothly carrying out the entire bending operation. At the same time, the user can adjust the position of components such as the rack and transmission block to cooperate with the bending machine body and adapt to the bending angle requirements of different steel pipes.

[0020] 3. By setting up a lubrication component, the lubrication component and the auxiliary component work together to apply lubricating oil to the surface of the die roller during the bending operation. The lubricating oil reduces the friction between the two, thereby reducing the risk of tearing or damage to the internal strength of the steel pipe under stress, as well as excessive wear on the surface. No manual addition is required by the user. Lubrication is performed before each bending operation, which greatly reduces the damage to the steel pipe during the bending operation and improves the pass rate of the steel pipe after bending. Attached Figure Description

[0021] Figure 1This is a frontal perspective view of the three-dimensional structure of the present invention;

[0022] Figure 2 This is a side-view perspective structural diagram of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the auxiliary components and lubrication components in this invention;

[0024] Figure 4 This is a three-dimensional structural diagram of the auxiliary components, hydraulic push rod, and bending machine body in this invention;

[0025] Figure 5 This is a three-dimensional structural diagram of the auxiliary component in this invention;

[0026] Figure 6 This is a partial cross-sectional three-dimensional structural view of the pull rod, transmission block, and push rod in this invention;

[0027] Figure 7 This is a three-dimensional structural diagram of the lubrication component in this invention;

[0028] Figure 8 This is a cross-sectional three-dimensional structural diagram of the oil cylinder in this invention;

[0029] Figure 9 This is a three-dimensional structural diagram of the transmission pipe, oil outlet groove, and mold roller in this invention.

[0030] The labels in the diagram represent:

[0031] 101. Workbench; 102. Hydraulic push rod; 103. Bending machine body; 104. Die roller; 105. Die head;

[0032] 200. Auxiliary component; 201. Mounting block; 202. Transmission roller; 203. Gear; 204. Rack rack; 205. Abutting block; 206. Pull rod; 207. Transmission block; 208. Push rod; 209. Slider;

[0033] 300. Lubrication assembly; 301. Oil cylinder; 302. Piston; 303. Abutment rod; 304. Transmission pipe; 305. One-way valve pipe; 306. Oil outlet groove. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] The present invention will be further described below with reference to embodiments.

[0036] This embodiment describes a stainless steel pipe adapted to a multi-angle bending device for automobiles, such as... Figures 1-9 As shown, the machine includes a workbench 101, a hydraulic push rod 102 fixedly installed at the top of the workbench 101, a bending machine body 103 slidably connected above the workbench 101, mold rollers 104 are provided on both sides inside the bending machine body 103, a mold head 105 is fixedly connected to the front end of the hydraulic push rod 102, an auxiliary component 200 is provided above the workbench 101, and a lubrication component 300 is provided above the bending machine body 103.

[0037] The auxiliary component 200 includes a mounting block 201, which is fixed above the workbench 101. The auxiliary component 200 uniformly retracts and expands the steel pipe during the bending process. It performs the bending operation when retracting and releases the steel pipe when expanding, and completes the automatic bending operation in conjunction with an external feeder.

[0038] As a preferred embodiment of this example, Figures 1-9 As shown, slots are evenly provided on both sides of the surface of the bending machine body 103, and the upper and lower ends of the mold roller 104 are inserted and connected to the slots on the bending machine body 103. The bending machine body 103 and the mold roller 104 are connected as one unit through the slots.

[0039] The auxiliary component 200 also includes a transmission roller 202, which is laterally rotatably connected to the interior of the mounting block 201. Both ends of the transmission roller 202 extend to both sides of the mounting block 201. A gear 203 is fixedly connected to the middle of the surface of the transmission roller 202. The gear 203 is also located inside the mounting block 201. A rack 204 is fixed above the push rod of the hydraulic push rod 102. The rack 204 meshes with the gear 203.

[0040] Pull rods 206 are slidably connected to both sides of the mounting block 201. The pull rods 206 are T-shaped, and one end of each pull rod 206 extends to the side of the transmission roller 202 on the same side. The bottom end of the transmission roller 202 on the side away from the mounting block 201 is fixedly connected to an abutment block 205. The abutment blocks 205 are in contact with the pull rods 206 on the same side. The pull rods 206 are fixedly connected to the back of the bending machine body 103.

[0041] As a preferred embodiment of this example, Figures 1-9 As shown, both sides of the mounting block 201 are rotatably connected to transmission blocks 207. The ends of the transmission blocks 207 extend to the sides of the transmission roller 202. The bottom end of the transmission blocks 207 is fixedly connected to a push rod 208, which is inserted into the inside of the pull rod 206. A slider 209 is fixedly connected inside the pull rod 206, and the slider 209 is slidably connected to the push rod 208. It should be noted that, according to the reference... Figure 5When the contact block 205 rotates, it first contacts the pull rod 206 and pushes the pull rod 206 to move horizontally backward. The pull rod 206 drives the bending machine body 103 to move in the same direction. Then, the contact block 205 contacts the transmission block 207, causing the transmission block 207 and the push rod 208 to rotate.

[0042] Compared with existing authorized patents and devices with the same or similar technologies, the following effects are achieved:

[0043] This device requires users to frequently perform loading, bending, and unloading operations during bending operations. Multiple steel pipe fittings can be produced in one operation, and they can be directly cut according to the size of the fittings. This reduces the manual involvement in the entire bending operation, saving a lot of time. A single steel pipe can be worked on continuously without stopping the loading process, making the entire bending operation more seamless.

[0044] It is not limited by the shape of the steel pipe after bending. After the bending machine body 103 and the die head 105 are separated from the steel pipe, it can be smoothly fed with the cylinder to carry out the entire bending operation smoothly. At the same time, the user can adjust the position of components such as the toothed rod 204 and the transmission block 207 to cooperate with the bending machine body 103 and adapt to the bending angle requirements of different steel pipes.

[0045] At other levels, this embodiment also provides a stainless steel pipe adaptable to a multi-angle bending device for automobiles, such as... Figures 1-9 As shown, the lubrication component 300 includes an oil cylinder 301, which is fixed to the top of the bending machine body 103. The lubrication component 300 is used to cooperate with the auxiliary component 200 to apply lubricating oil to the die head 105 during the pipe bending operation to reduce the friction force on the steel pipe.

[0046] As a preferred embodiment of this example, Figures 1-9 As shown, the lubrication assembly 300 also includes a piston 302, which is slidably connected to the inside of the oil cylinder 301. An abutment rod 303 is inserted into the back of the oil cylinder 301. The front end of the abutment rod 303 extends into the inside of the oil cylinder 301 and is fixedly connected to the piston 302. The end of the abutment rod 303 extends to the top of the mounting block 201. It should be noted that the piston 302 and the oil cylinder 301 are in sealed contact, and the rear end of the abutment rod 303 is connected to the top sleeve of the mounting block 201.

[0047] Both sides of the oil cylinder 301 are fixed and connected to the transmission pipe 304. The transmission pipe 304 is located in front of the abutment rod 303. The bottom end of the transmission pipe 304 is fixed with a one-way valve pipe 305. The mold roller 104 is fixed and connected to the transmission pipe 304 through the one-way valve pipe 305. It should be noted that the top end of the oil cylinder 301 is fixed with a connecting pipe for adding lubricating oil into the oil cylinder 301.

[0048] As a preferred embodiment of this example, Figures 1-9 As shown, an oil outlet groove 306 is provided inside the mold roller 104. The oil outlet groove 306, the transmission pipe 304 and the one-way valve pipe 305 are interconnected. The oil outlet groove 306 penetrates the surface of the mold roller 104 and communicates with the outside. The oil outlet groove 306 is evenly distributed on the surface of the mold roller 104.

[0049] Compared with existing authorized patents and devices with the same or similar technologies, the following effects are achieved:

[0050] Lubricating oil is applied to the surface of the die roller 104 during the bending operation. The lubricating oil reduces the friction between the two, thereby reducing the stress on the steel pipe, preventing tearing or damage to its internal strength, and minimizing surface wear.

[0051] The complete working principle and process described above are as follows:

[0052] Please refer to Figures 1-9 The following is the specific working process of auxiliary component 200;

[0053] It should be noted that when using this device to bend steel pipes, currently the steel pipe is automatically pushed by a cylinder in conjunction with the pipe bending machine for bending operations. When using this device, the steel pipe is also automatically pushed by a cylinder. The user can push a large-sized steel pipe into the bending machine body 103 via the cylinder, positioning the pipe between the die heads 105 of the die rollers 104. The cylinder can freely control the pushing distance. The user adjusts the distance the steel pipe enters the bending machine body 103 according to the bending position and angle. Then, the user activates the hydraulic push rod 102, which drives the die head 105 to extend forward. The hydraulic push rod 102 simultaneously moves the rack 204 on it, which meshes with the gear 203. The rack 204 drives the gear 203 to rotate, and the gear 203 drives the transmission roller 20... 2. Rotation: The transmission roller 202 drives the contact block 205 on it to rotate. It is known that when the contact block 205 rotates, it first contacts the pull rod 206 and pushes the pull rod 206 to move horizontally backward. The pull rod 206 is fixedly connected to the bending machine body 103. The pull rod 206 drives the bending machine body 103 and the die roller 104 on it to move closer to the mounting block 201. That is, the bending machine body 103 and the hydraulic push rod 102 move towards each other, causing the die roller 104 and the die head 105 to contact and compress the steel pipe, causing the steel pipe to bend under force. When the steel pipe bends to a predetermined angle, the hydraulic push rod 102 continues to extend forward, causing the transmission block 207 and the push rod 208 to rotate. The push rod 208 is slidably connected to the slider 209, and the slider 209 is fixedly connected to the pull rod 206. (Reference) Figure 5The transmission roller 202 rotates counterclockwise. As the contact block 205 rotates, it comes into contact with the transmission block 207, causing the transmission block 207 to rotate clockwise. This, through the push rod 208 and the slider 209, pushes the pull rod 206 to move away from the mounting block 201, thereby separating the die roller 104 and the die head 105 from the bent steel pipe. At this time, the cylinder pushes the steel pipe to continue moving. According to the size of the steel pipe fittings, the unbent part of the entire large-sized steel pipe moves back into the interior of the bending machine body 103. Then, the above operation is continued, thereby making multiple steel pipe fittings bent in one go on the entire steel pipe.

[0054] The effects obtained from the above motion process are as follows: By setting up the auxiliary component 200, which works in conjunction with the cylinder feeding, a single large-sized steel pipe can be continuously bent into multiple steel pipe fittings. The user can then cut the steel pipe fittings into individual parts. This device eliminates the need for frequent feeding, bending, and unloading operations during bending. Multiple steel pipe fittings can be produced in one operation, and can then be directly cut according to the size of the fittings. This reduces the manual intervention in the bending operation, saving a lot of time. A single steel pipe can be continuously bent without interrupting the feeding process, making the entire bending operation more seamless.

[0055] The auxiliary component 200 controls the bending machine body 103 to drive the die roller 104 and die head 105 to move back and forth continuously, thereby completing bending, releasing, and feeding operations on the steel pipe. It is not limited by the shape of the bent steel pipe. After the bending machine body 103 and die head 105 are separated from the steel pipe, they can be smoothly coordinated with the cylinder to continue feeding, thus smoothly carrying out the entire bending operation. At the same time, the user can adjust the position of components such as the toothed rod 204 and the transmission block 207 to cooperate with the bending machine body 103 and adapt to the bending angle requirements of different steel pipes.

[0056] Please refer to Figures 1-9 The following is a detailed description of the working process of the lubrication assembly 300;

[0057] According to the movement process of the auxiliary component 200, when the bending machine body 103, the die roller 104, and the die head 105 approach each other under the drive of the hydraulic push rod 102, it is known that the piston 302 and the oil cylinder 301 are in sealed contact, the rear end of the abutment rod 303 is connected to the top sleeve of the mounting block 201, and the oil cylinder 301 is fixedly connected to the bending machine body 103. When the bending machine body 103 and the die head 105 move closer to each other, the bending machine body 103 drives the oil cylinder 301 to move simultaneously. At this time, the piston 302 and the abutment rod 303 inside the oil cylinder 301 are unable to move due to the abutment of the mounting block 201. When the oil cylinder 301 moves, the piston 302 squeezes the lubricating oil inside the oil cylinder 301, causing the lubricating oil inside the oil cylinder 301 to enter the die roller 104 from the transmission pipe 304 and the one-way valve pipe 305. In the oil outlet groove 306, it is known that the oil outlet groove 306, the transmission pipe 304, and the one-way valve pipe 305 are interconnected. The oil outlet groove 306 penetrates the surface of the die roller 104 and is connected to the outside. The oil outlet groove 306 is evenly distributed on the surface of the die roller 104. Then, the lubricating oil is evenly output to the surface of the die roller 104 through the oil outlet groove 306. Then, the lubricating oil flows on the surface of the die roller 104. When the steel pipe contacts the die roller 104, the friction between the two is reduced by the lubricating oil, thereby reducing the steel pipe from tearing or internal strength damage, as well as the surface from excessive wear. When the bending machine body 103 and the die head 105 move away from each other, the piston 302 and the oil cylinder 301 simulate piston movement. The top of the oil cylinder 301 is fixed with a connecting pipe. The piston movement draws out lubricating oil and adds lubricating oil into the oil cylinder 301.

[0058] The effect obtained from the above motion process is as follows: by setting up the lubrication component 300, which works in conjunction with the auxiliary component 200, lubricating oil is applied to the surface of the die roller 104 during the bending operation. The lubricating oil reduces the friction between the two, thereby reducing the risk of tearing or damage to the internal strength of the steel pipe under stress, as well as excessive wear on the surface. No manual addition by the user is required. Lubrication is performed before each bending operation, which greatly reduces the damage to the steel pipe during the bending operation and improves the pass rate of the bent steel pipe.

[0059] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A stainless steel pipe bending device adapted for automotive applications, characterized in that: The device includes a workbench (101), a hydraulic push rod (102) fixedly installed at the top of the workbench (101), a bending machine body (103) slidably connected above the workbench (101), mold rollers (104) provided on both sides inside the bending machine body (103), a mold head (105) fixedly connected to the front end of the hydraulic push rod (102), an auxiliary component (200) provided above the workbench (101), and a lubrication component (300) provided above the bending machine body (103). The auxiliary component (200) includes a mounting block (201), which is fixed above the workbench (101). The auxiliary component (200) can be retracted and expanded at a uniform speed during the bending process of the steel pipe. When it retracts, it performs the bending operation, and when it expands, it releases the steel pipe. It works in conjunction with an external feeder to complete the automatic bending operation. The auxiliary component (200) also includes a transmission roller (202), which is laterally rotatably connected to the inside of the mounting block (201). The two ends of the transmission roller (202) extend to both sides of the mounting block (201). A gear (203) is fixedly connected to the middle of the surface of the transmission roller (202). The gear (203) is also located inside the mounting block (201). A rack (204) is fixed above the push rod of the hydraulic push rod (102). The rack (204) meshes with the gear (203). Pull rods (206) are slidably connected to both sides of the mounting block (201). The pull rods (206) are T-shaped. One end of each pull rod (206) extends to the side of the transmission roller (202) on the same side. Abutment blocks (205) are fixedly connected to the bottom end of the transmission roller (202) on the side away from the mounting block (201). The abutment blocks (205) are in contact with the pull rods (206) on the same side. The pull rods (206) are fixedly connected to the back of the bending machine body (103). Both sides of the mounting block (201) are rotatably connected to transmission blocks (207). The end of the transmission block (207) extends to the side of the transmission roller (202). The bottom end of the transmission block (207) is fixedly connected to a push rod (208). The push rod (208) is inserted into the inside of the pull rod (206). The inside of the pull rod (206) is fixedly connected to a slider (209). The slider (209) is slidably connected to the push rod (208). The lubrication component (300) includes an oil cylinder (301), which is fixed to the top of the bending machine body (103). The lubrication component (300) is used in conjunction with the auxiliary component (200) to apply lubricating oil to the die head (105) during the bending operation to reduce the friction force on the steel pipe.

2. The stainless steel pipe bending device adapted for automobiles according to claim 1, characterized in that: The bending machine body (103) has slots evenly provided on both sides of its surface. The upper and lower ends of the mold roller (104) are inserted into the slots on the bending machine body (103). The bending machine body (103) and the mold roller (104) are connected as one unit through the slots.

3. The stainless steel pipe bending device adapted for automobiles according to claim 1, characterized in that: The lubrication assembly (300) also includes a piston (302), which is slidably connected to the inside of an oil cylinder (301). An abutment rod (303) is inserted into the back of the oil cylinder (301). The front end of the abutment rod (303) extends into the inside of the oil cylinder (301), and the front end of the abutment rod (303) is fixedly connected to the piston (302). The end of the abutment rod (303) extends above the mounting block (201).

4. The stainless steel pipe bending device adapted for automobiles according to claim 3, characterized in that: Both sides of the oil cylinder (301) are fixed and connected to a transmission pipe (304). The transmission pipe (304) is located in front of the abutment rod (303). A one-way valve pipe (305) is fixed at the bottom of the transmission pipe (304). The mold roller (104) is fixed and connected to the transmission pipe (304) through the one-way valve pipe (305).

5. A multi-angle bending device for stainless steel pipes adapted for automobiles according to claim 4, characterized in that: The mold roller (104) has an oil outlet groove (306) inside. The oil outlet groove (306), the transmission pipe (304) and the one-way valve pipe (305) are interconnected. The oil outlet groove (306) penetrates the surface of the mold roller (104) and communicates with the outside. The oil outlet groove (306) is evenly distributed on the surface of the mold roller (104).

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