A stainless steel pipe bending device

Abstract

The present invention discloses a stainless steel pipe bending device, comprising a base plate, above which a bending mechanism and a grinding mechanism are arranged. There are two bending mechanisms, which are symmetrically arranged on both sides of the grinding mechanism. The bending mechanism comprises an end bending assembly and a middle bending assembly, which are used to bend the stainless steel pipe. The grinding mechanism comprises two symmetrically arranged grinding assemblies, which comprise two symmetrically arranged grinding heads, which are used to grind the ends of the stainless steel pipe to facilitate the use of the bent stainless steel pipe. The present invention automatically completes the bending and grinding of the stainless steel pipe to be processed through the bending mechanism and the grinding mechanism, so that the processed stainless steel pipe can be easy to use and the installation efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of processing equipment, and in particular relates to a stainless steel pipe bending device. Background Art

[0002] In modern industrial production, stainless steel pipes are widely used in many fields such as construction, machinery manufacturing, automobile industry, aerospace, etc. due to their excellent corrosion resistance, high strength and aesthetics. In these application scenarios, stainless steel pipes often need to be processed into various specific shapes, among which bending is a common processing technology.

[0003] Traditional stainless steel pipe bending devices can meet basic bending needs to a certain extent. Early bending equipment mostly used simple mechanical structures, and achieved the bending of steel pipes through manual operation or basic mechanical transmission. This type of equipment has a simple structure and low cost, but it has problems with poor precision and low efficiency, making it difficult to meet the needs of industrial production with high precision requirements. However, the existing various types of stainless steel pipe bending devices still have many shortcomings when facing the processing of complex pipe fittings that require multiple bends, especially four bends. On the one hand, existing bending equipment can often only perform one or two bends. To achieve multiple bends, the operator needs to adjust the position of the pipe fitting in the equipment multiple times, reposition and clamp it, which not only consumes a lot of time, but also multiple clamping can easily lead to the accumulation of positioning errors of the pipe fitting, affecting the precision and quality of the final product. On the other hand, for complex pipe fittings that require four bends, existing bending devices have difficulties in coordinating the bending sequence and angles, making it difficult to achieve accurate and efficient processing. In response to the above problems, the present invention provides a stainless steel pipe bending device. Summary of the Invention

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a stainless steel pipe bending device includes a base plate, and a bending mechanism and a grinding mechanism are arranged above the base plate.

[0005] There are two bending mechanisms, which are symmetrically arranged on both sides of the grinding mechanism. The bending mechanism includes an end bending component and a middle bending component, which are used to bend the stainless steel pipe.

[0006] The grinding mechanism includes two symmetrically arranged grinding components, and the grinding components include two symmetrically arranged grinding heads. The grinding heads are used to grind the ends of the stainless steel pipe so that the bent stainless steel pipe can be used.

[0007] Furthermore, the end bending assembly includes two symmetrically arranged end bending wheels, the end bending wheels are fixedly connected to the protruding ends of the end bending cylinder, the end bending cylinder is installed on end connecting block one, the two end connecting blocks one are respectively installed on the two protruding ends of the double-headed cylinder, the double-headed cylinder is fixedly connected to end connecting block two, and the end connecting block two is connected to the horizontal moving assembly; when the stainless steel pipe is bent, the two end bending wheels are used to bend the end of the stainless steel pipe to produce a first bend and a fourth bend on the stainless steel pipe.

[0008] Furthermore, the middle bending assembly includes two symmetrically arranged middle guide wheels, which are installed on a cross bar. The two cross bars are respectively connected to the protruding ends of the two middle cylinders, and the two middle cylinders are respectively fixedly installed inside the two lifting boxes; when the stainless steel pipe is bent, the two middle guide wheels are used to bend the middle part of the stainless steel pipe to produce a second bend and a third bend on the stainless steel pipe.

[0009] Furthermore, the central bending assembly also includes a central bending wheel, which is fixedly connected to the protruding end of the separation cylinder, and the separation cylinder is connected to the central connecting block. The central connecting block is connected to a second central lead screw and a second central guide rod. The second central lead screw is threadedly engaged with the central connecting block and is fixedly connected to the output shaft of the second central motor fixedly mounted on the mobile platform. The second central guide rod is fixedly mounted on the mobile platform, and the mobile platform is connected to the vertical moving assembly.

[0010] Furthermore, the two lifting boxes are symmetrically arranged, and two symmetrically arranged moving blocks are slidably installed on the lifting boxes. A reset spring is provided between the moving blocks and the lifting boxes. A plurality of clamping wheels for bending are rotatably installed on the moving blocks. The moving blocks are connected to the distance adjusting components, and the distance adjusting components are used to adjust the distance between the two moving blocks; when the stainless steel pipe is bent, the clamping wheels on the two symmetrically arranged moving blocks are used to fix the stainless steel pipe.

[0011] Furthermore, the distance adjustment assembly includes two symmetrically arranged wedge blocks, and the two wedge blocks are respectively fixedly mounted on two moving blocks. The wedge blocks are provided with inclined surfaces, and the inclined surfaces slide in conjunction with the driving columns. The two driving columns are fixedly mounted on the connecting rod, and the connecting rod is fixedly connected to the protruding end of the distance adjustment cylinder. The distance adjustment cylinder is fixedly mounted inside the lifting box.

[0012] Furthermore, a lifting block is fixedly installed on each of the two lifting boxes, the lifting block is threadedly engaged with the lifting screw, the lifting block is slidingly engaged with the lifting guide rod, the lifting screw is rotatably installed on the support plate, the lifting block is fixedly installed on the support plate, and the lifting screw is fixedly connected to the output shaft of the lifting motor fixedly installed on the support plate.

[0013] Furthermore, the grinding assembly also includes two symmetrically arranged grinding cylinders, the grinding cylinders are fixedly mounted on the center frame, the protruding ends of the grinding cylinders are fixedly connected to the mounting frame, the mounting frame is fixedly connected to the grinding motor, the output shaft of the grinding motor is connected to the grinding head, and the center frame is fixedly mounted on the base plate.

[0014] Furthermore, two symmetrically arranged separation cylinders are fixedly mounted on the base plate, and the protruding ends of the two separation cylinders are respectively connected to two support plates, and the support plates are slidably matched with the base plate.

[0015] Compared with the prior art, the present invention has the following advantages: (1) the present invention automatically completes the bending and grinding of the stainless steel pipe to be processed through the bending mechanism and the grinding mechanism, so that the processed stainless steel pipe can be convenient for use and the installation efficiency is improved; (2) when bending the stainless steel pipe to be processed, the present invention can complete four bendings through one clamping, thereby improving the bending accuracy and reducing the number of clamping and positioning; (3) the present invention can meet the bending processing needs of stainless steel pipes of different lengths and diameters and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 for Figure 1 Another angle of the structure Figure 1 .

[0018] Figure 3 for Figure 1 Another angle of the structure Figure 2 .

[0019] Figure 4 for Figure 3 Schematic diagram of the partially enlarged structure at A1 in the middle.

[0020] Figure 5 It is a partial cross-sectional view of part of the structure of the present invention.

[0021] Figure 6 for Figure 5 Schematic diagram of the partially enlarged structure at A2 in the middle.

[0022] Figure 7 Schematic diagram of part of the structure of the present invention Figure 1 .

[0023] Figure 8 for Figure 7 Schematic diagram of the partially enlarged structure at A3 in the middle.

[0024] Figure 9 It is a schematic diagram of the grinding mechanism structure of the present invention.

[0025] Figure 10 Schematic diagram of part of the structure of the present invention Figure 2 .

[0026] Figure 11 Schematic diagram of the stainless steel pipe structure after bending.

[0027] Reference numerals: 1-base plate; 2-support plate; 3-lifting box; 4-clamping wheel; 5-moving block; 6-return spring; 7-wedge block; 8-inclined surface; 9-driving column; 10-connecting rod; 11-pitch-adjusting cylinder; 12-end bending wheel; 13-end bending cylinder; 14-end connecting block 1; 15-double-headed cylinder; 16-end connecting block 2; 17-horizontal lead screw; 18-end guide rod; 19-end bending motor; 20-middle cylinder 1; 21-cross bar; 22-middle guide wheel; 23-middle motor 1; 24-middle lead screw 1; 25-middle guide rod 1; 26 -moving platform; 27-middle lead screw 2; 28-middle guide rod 2; 29-middle motor 2; 30-middle bending wheel; 31-lifting block; 32-lifting lead screw; 33-lifting guide rod; 34-lifting motor; 35-center frame; 36-polishing cylinder; 37-mounting frame; 38-polishing motor; 39-polishing head; 40-separation cylinder; 41-guide rail; 42-roller; 43-stainless steel pipe; 4301-first bending part; 4302-second bending part; 4303-third bending part; 4304-fourth bending part; 44-middle cylinder 2; 45-middle connecting block. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0029] Example: Figure 1 — Figure 11 The stainless steel pipe bending device shown includes a base plate 1 , above which a bending mechanism and a grinding mechanism are arranged.

[0030] There are two bending mechanisms, which are symmetrically arranged on both sides of the grinding mechanism. The bending mechanisms include end bending components and middle bending components, which are used to bend the stainless steel tube 43.

[0031] The grinding mechanism includes two symmetrically arranged grinding assemblies, and the grinding assembly includes two symmetrically arranged grinding heads 39. The grinding heads 39 are used to grind the ends of the stainless steel tube 43 so that the stainless steel tube 43 can be used after being bent.

[0032] The end bending assembly includes two symmetrically arranged end bending wheels 12, which are fixedly connected to the protruding ends of the end bending cylinder 13. The end bending cylinder 13 is installed on the end connecting block 14. The two end connecting blocks 14 are respectively installed on the two protruding ends of the double-headed cylinder 15. The double-headed cylinder 15 is fixedly connected to the end connecting block 2 16, and the end connecting block 2 16 is connected to the horizontal moving assembly; when the stainless steel tube 43 is bent, the two end bending wheels 12 are used to bend the ends of the stainless steel tube 43 to generate a first bending portion 4301 and a fourth bending portion 4304 on the stainless steel tube 43.

[0033] Specifically, the horizontal movement assembly includes a horizontal lead screw 17, which is threadedly engaged with the second end connection block 16. The horizontal lead screw 17 is fixedly connected to the output shaft of the end bending motor 19 fixedly mounted on the support plate 2. The support plate 2 is also fixedly mounted with an end guide rod 18, which is slidably engaged with the second end connection block 16. When the end bending motor 19 drives the horizontal lead screw 17 to rotate, the second end connection block 16 can slide horizontally along the end guide rod 18.

[0034] The middle bending assembly includes two symmetrically arranged middle guide wheels 22, which are installed on the cross bar 21. The two cross bars 21 are respectively connected to the protruding ends of the two middle cylinders 20, and the two middle cylinders 20 are respectively fixedly installed inside the two lifting boxes 3; when the stainless steel tube 43 is bent, the two middle guide wheels 22 are used to bend the middle part of the stainless steel tube 43 to generate a second bending portion 4302 and a third bending portion 4303 on the stainless steel tube 43.

[0035] The middle bending assembly also includes a middle bending wheel 30, which is fixedly connected to the protruding end of the separation cylinder 40, and the separation cylinder 40 is connected to the middle connecting block 45. The middle connecting block 45 is connected to the middle lead screw 27 and the middle guide rod 28. The middle lead screw 27 is threadedly engaged with the middle connecting block 45 and is fixedly connected to the output shaft of the middle motor 29 fixedly mounted on the moving platform 26. The middle guide rod 28 is fixedly mounted on the moving platform 26, and the moving platform 26 is connected to the vertical moving assembly.

[0036] Specifically, the vertical moving assembly includes a middle screw 24 rotatably mounted on the support plate 2 and a middle guide rod 25 fixedly mounted on the support plate 2. The middle guide rod 25 is slidably engaged with the moving platform 26. The middle screw 24 is threadedly engaged with the moving platform 26. The middle screw 24 is fixedly connected to the output shaft of the middle motor 23. The middle motor 23 is fixedly mounted on the support plate 2. When the output shaft of the middle motor 23 drives the middle screw 24 to rotate, the moving platform 26 slides in the vertical direction along the middle guide rod 25.

[0037] The two lifting boxes 3 are symmetrically arranged, and two symmetrically arranged moving blocks 5 are slidably installed on the lifting boxes 3. A reset spring 6 is arranged between the moving blocks 5 and the lifting boxes 3. A plurality of clamping wheels 4 for bending are rotatably installed on the moving blocks 5. The moving blocks 5 are connected to the distance adjusting assembly, and the distance adjusting assembly is used to adjust the distance between the two moving blocks 5; when the stainless steel tube 43 is bent, the clamping wheels 4 on the two symmetrically arranged moving blocks 5 are used to fix the stainless steel tube 43.

[0038] The distance adjustment assembly includes two symmetrically arranged wedge blocks 7, which are respectively fixedly mounted on the two moving blocks 5. The wedge blocks 7 are provided with an inclined surface 8, which slides with the driving column 9. The two driving columns 9 are fixedly mounted on the connecting rod 10, and the connecting rod 10 is fixedly connected to the protruding end of the distance adjustment cylinder 11. The distance adjustment cylinder 11 is fixedly mounted inside the lifting box 3.

[0039] A lifting block 31 is fixedly installed on each of the two lifting boxes 3. The lifting block 31 is threadedly engaged with the lifting screw 32. The lifting block 31 is slidingly engaged with the lifting guide rod 33. The lifting screw 32 is rotatably installed on the support plate 2. The lifting guide rod 33 is fixedly installed on the support plate 2. The lifting screw 32 is fixedly connected to the output shaft of the lifting motor 34 fixedly installed on the support plate 2.

[0040] The grinding assembly also includes two symmetrically arranged grinding cylinders 36, which are fixedly mounted on the center frame 35. The protruding end of the grinding cylinder 36 is fixedly connected to the mounting frame 37, the mounting frame 37 is fixedly connected to the grinding motor 38, the output shaft of the grinding motor 38 is connected to the grinding head 39, and the center frame 35 is fixedly mounted on the base plate 1.

[0041] Two symmetrically arranged separation cylinders 40 are fixedly mounted on the bottom plate 1 . The protruding ends of the two separation cylinders 40 are respectively connected to the two support plates 2 . The support plates 2 are slidably fitted with the bottom plate 1 .

[0042] Specifically, four rollers 42 are provided under each support plate 2. The rollers 42 are slidably mounted on the guide rails 41. The guide rails 41 are mounted on the base plate 1. When the support plate 2 moves, the guide rails 41 guide the rollers 42, so that the rollers 42 drive the support plate 2 to move, thereby reducing the movement resistance of the support plate 2.

[0043] Working Principle: Since the present invention has two symmetrically arranged bending mechanisms, two stainless steel tubes 43 to be processed can be bent simultaneously during the bending process, thereby improving the bending efficiency. After the two stainless steel tubes 43 to be processed are bent, since the ends of the two stainless steel tubes 43 are symmetrically arranged, in order to ensure that the ends of the two symmetrically arranged stainless steel tubes 43 do not interfere with each other, before processing, it is necessary to adjust the distance between the two bending mechanisms according to the length of the stainless steel tubes 43. The bending mechanisms are installed on the two support plates 2, so adjusting the distance between the two support plates 2 is sufficient.

[0044] Specifically, when adjusting the distance between the two support plates 2, the separation cylinder 40 connected to the support plate 2 is started, and the support plate 2 is driven to move by the protruding end of the separation cylinder 40. Four rollers 42 are connected under the support plate 2, and the rollers 42 slide in cooperation with the guide rails 41 fixedly mounted on the base plate 1. Therefore, during the movement of the support plate 2, the rollers 42 will move along the guide rails 41, thereby reducing the resistance to the movement of the support plate 2, and finally completing the adjustment of the distance between the support plates 2 and the distance between the two bending mechanisms.

[0045] After the distance between the two bending mechanisms is adjusted, the distance between the two rows of clamping wheels 4 on each lifting box 3 is adjusted according to the diameter of the stainless steel pipe 43 to be processed (a moving block 5 is slidably installed on the lifting box 3, and the moving block 5 is arranged along the long side of the lifting box 3, so the clamping wheels 4 on the two moving blocks 5 will be in two rows). Specifically, the distance adjustment cylinder 11 fixedly installed inside the lifting box 3 is started, so that the extended end of the distance adjustment cylinder 11 drives the connecting rod 10 to move, and the connecting rod 10 drives the two driving columns 9 installed on the connecting rod 10 to move; when the two driving columns 9 are moved to the right (such as Figure 5 、 Figure 6 When the two driving columns 9 move to the left (such as Figure 5 、 Figure 6 When the two moving blocks 5 move from each other under the elastic force of the return spring 6, the two moving blocks 5 move away from each other. In actual operation, the staff can adjust the distance between the two moving blocks 5 according to the diameter of the stainless steel tube 43, thereby completing the adjustment of the distance between the two rows of clamping wheels 4.

[0046] When the distance adjustment between the two rows of clamping wheels 4 is completed to meet the diameter of the stainless steel pipe 43, the vertical distance between the two lifting boxes 3 is adjusted according to the length of the stainless steel pipe 43. Specifically, the lifting motor 34 fixedly installed on the support plate 2 is started to rotate the lifting screw 32 fixedly connected to the output shaft of the lifting motor 34. The lifting screw 32 is threadedly engaged with the lifting block 31, and the lifting block 31 is fixedly connected to the lifting box 3. Therefore, during the rotation of the lifting screw 32, the two lifting blocks 31 will drive the two lifting boxes 3 to slide vertically along the lifting guide rod 33, thereby making the two lifting boxes 3 approach each other or move away from each other. If the distance between the second bend 4302 and the third bend 4303 needs to be larger, the two lifting boxes 3 will move away from each other. If the distance between the second bend 4302 and the third bend 4303 needs to be smaller, the two lifting boxes 3 will approach each other.

[0047] After the distance between the two lifting boxes 3 is adjusted, the stainless steel pipe 43 to be processed begins to be processed. First, one end of the stainless steel pipe 43 to be processed is inserted between the two rows of clamping wheels 4 located below. The distance between the two rows of clamping wheels 4 is controlled according to the required length of the first bend 4301. It should be noted that the staff can adaptively adjust the distance between the two rows of clamping wheels 4 according to the length of the first bend 4301 after forming. After adjusting the distance between the two rows of clamping wheels 4, the distance adjustment cylinder 11 is started. The distance adjustment cylinder 11 adjusts the distance between the two moving blocks 5, that is, the distance between the clamping wheels 4 on the two moving blocks 5, so that the clamping wheels 4 clamp the stainless steel pipe 43 to be processed. Unlike adjusting the distance between the clamping wheels 4 in the initial state, the purpose of this adjustment is to clamp the stainless steel pipe 43, so the adjustment range is smaller and the time required is shorter, which helps to improve the efficiency of bending.

[0048] After the clamping wheel 4 clamps the stainless steel pipe 43 to be processed, the double-headed cylinder 15 is started, so that the two protruding ends of the double-headed cylinder 15 drive the end connecting block 14 and the end bending cylinder 13 on the end connecting block 14 to move to a suitable height, and at the same time, the protruding end of the end bending cylinder 13 drives the end bending wheel 12 to move to a suitable position, and then the stainless steel pipe 43 is bent for the first time. At this time, the end bending motor 19 fixedly mounted on the support plate 2 is started, so that the end bending motor 19 drives the horizontal screw 17 to rotate, thereby causing the end connecting block 2 16 to slide horizontally along the end guide rod 18, so that the end bending wheel 12 located below will contact the stainless steel pipe 43 to be processed. Since the stainless steel pipe 43 cannot move due to the restriction of the clamping wheel 4, the horizontally moving end bending wheel 12 will apply horizontal force to the stainless steel pipe 43, thereby bending the portion of the stainless steel pipe 43 that protrudes from the outside of the clamping wheel 4, and finally forming the first curved portion 4301 of the stainless steel pipe 43 that has completed the first bending.

[0049] After completing the first bend, according to the final required length requirements of the curvature of the second bend 4302 and the third bend 4303, the distance between the two middle guide wheels 22 and the lifting box 3 is adjusted. Specifically, by fixing the extended end of the middle cylinder 1 20 installed inside the lifting box 3, the distance between the cross bar 21 and the lifting box 3 is adjusted, thereby completing the adjustment of the position of the middle guide wheel 22, and then starting the middle cylinder 2 44, so that the middle cylinder 2 44 drives the middle bending wheel 30 to extend to the appropriate position, and then starting the middle motor 29, so that the middle motor 29 drives the middle guide rod 28 to rotate, and finally the middle connecting block 45 drives the middle cylinder 2 44 and the middle bending wheel 30 to move to the appropriate position from the middle guide wheel 22 below, and then starts the second bending of the stainless steel pipe 43, that is, starting The middle motor 23 drives the middle lead screw 24 to rotate. At this time, the moving platform 26 slides upward along the middle guide rod 25. Then, the middle bending wheel 30 located below the stainless steel pipe 43 in the initial state will move upward. Due to the restriction of the middle guide wheel 22 located below, the stainless steel pipe 43 cannot move upward as a whole. Therefore, the middle bending wheel 30 moving upward will bend the stainless steel pipe 43 for the second time, thereby forming a second curved portion 4302 on the stainless steel pipe 43. When the middle bending wheel 30 moves to a suitable position from the middle guide wheel 22 located above, the middle motor 23 stops moving and the middle motor 29 is started at the same time, so that the middle connecting block 45 can drive the middle cylinder 2 44 and the middle bending wheel 30 to move horizontally (with Figure 7The stainless steel tube 43 is bent a third time by moving the end bending motor 19 (with the direction as a reference), resulting in a third bend 4303. The upper, straight portion of the stainless steel tube 43, which has completed the third bend, is located between the two rows of clamping wheels 4. After the third bend, the end bending motor 19 again drives the horizontal lead screw 17 to rotate, causing the end connecting block 16 to slide horizontally along the end guide rod 18. Finally, the end bending wheels 12 complete the fourth bend of the stainless steel tube 43, resulting in a fourth bend 4304.

[0050] After the stainless steel tube 43 to be processed has been bent four times, the ends of the two stainless steel tubes 43 are polished. Specifically, the polishing cylinder 36 is activated, and the extended end of the polishing cylinder 36 drives the mounting frame 37, the polishing motor 38, and the polishing head 39 to move, so that the polishing head 39 contacts the ends of the stainless steel tube 43. Then, the polishing motor 38 is activated, and the output shaft of the polishing motor 38 drives the polishing head 39 to rotate, so that the polishing head 39 completes the polishing of the ends of the stainless steel tube 43.

[0051] After polishing is completed, the bent stainless steel tube 43 can be removed. It should be noted that since the stainless steel tube 43 is in a bent state after bending, it is necessary to increase the distance between the two rows of clamping wheels 4 and reduce the distance between the two lifting boxes 3, so as to facilitate the removal of the bent stainless steel tube 43.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as above. For the sake of simplicity, they are not provided in detail. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stainless steel pipe bending device, comprising a bottom plate, characterized in that: A bending mechanism and a grinding mechanism are provided above the bottom plate; There are two bending mechanisms, which are symmetrically arranged on both sides of the grinding mechanism. The bending mechanism includes an end bending assembly and a middle bending assembly, which are used to bend the stainless steel pipe; The grinding mechanism includes two symmetrically arranged grinding assemblies, and the grinding assembly includes two symmetrically arranged grinding heads, and the grinding heads are used to grind the ends of the stainless steel pipe to facilitate the use of the bent stainless steel pipe; The end bending assembly includes two symmetrically arranged end bending wheels, the end bending wheels are fixedly connected to the protruding ends of the end bending cylinder, the end bending cylinder is mounted on the end connecting block 1, the two end connecting blocks 1 are respectively mounted on the two protruding ends of the double-headed cylinder, the double-headed cylinder is fixedly connected to the end connecting block 2, and the end connecting block 2 is connected to the horizontal moving assembly; when bending the stainless steel pipe, the two end bending wheels are used to bend the end of the stainless steel pipe to form a first bend and a fourth bend on the stainless steel pipe; The middle bending assembly includes two symmetrically arranged middle guide wheels, which are mounted on a crossbar. The two crossbars are respectively connected to the protruding ends of two middle cylinders, which are respectively fixedly mounted inside the two lifting boxes. When bending the stainless steel pipe, the two middle guide wheels are used to bend the middle of the stainless steel pipe to form a second bend and a third bend on the stainless steel pipe. The central bending assembly also includes a central bending wheel, which is fixedly connected to the protruding end of the central cylinder 2, and the central cylinder 2 is connected to the central connecting block. The central connecting block is connected to the central lead screw 2 and the central guide rod 2. The central lead screw 2 is threadedly engaged with the central connecting block and is fixedly connected to the output shaft of the central motor 2 fixedly mounted on the moving platform. The central guide rod 2 is fixedly mounted on the moving platform, and the moving platform is connected to the vertical moving assembly.

2. A stainless steel pipe bending device according to claim 1, characterized in that: The two lifting boxes are symmetrically arranged, and two symmetrically arranged moving blocks are slidably installed on the lifting boxes. A reset spring is arranged between the moving blocks and the lifting boxes. A plurality of clamping wheels for bending are rotatably installed on the moving blocks. The moving blocks are connected to the distance adjusting components, and the distance adjusting components are used to adjust the distance between the two moving blocks; when the stainless steel pipe is bent, the clamping wheels on the two symmetrically arranged moving blocks are used to fix the stainless steel pipe.

3. A stainless steel pipe bending device according to claim 2, characterized in that: The distance adjustment assembly includes two symmetrically arranged wedge blocks, and the two wedge blocks are respectively fixedly mounted on two moving blocks. The wedge blocks are provided with inclined surfaces, and the inclined surfaces slide in conjunction with the driving columns. The two driving columns are fixedly mounted on the connecting rod, and the connecting rod is fixedly connected to the protruding end of the distance adjustment cylinder. The distance adjustment cylinder is fixedly mounted inside the lifting box.

4. A stainless steel pipe bending device according to claim 3, characterized in that: A lifting block is fixedly installed on each of the two lifting boxes, the lifting block is threadedly matched with the lifting screw, the lifting block is slidingly matched with the lifting guide rod, the lifting screw is rotatably installed on the support plate, the lifting guide rod is fixedly installed on the support plate, and the lifting screw is fixedly connected to the output shaft of the lifting motor fixedly installed on the support plate.

5. A stainless steel pipe bending device according to claim 4, characterized in that: The grinding assembly also includes two symmetrically arranged grinding cylinders, which are fixedly mounted on a center frame. The protruding ends of the grinding cylinders are fixedly connected to the mounting frame. The mounting frame is fixedly connected to the grinding motor. The output shaft of the grinding motor is connected to the grinding head. The center frame is fixedly mounted on the base plate.

6. A stainless steel pipe bending device according to claim 5, characterized in that: Two symmetrically arranged separation cylinders are fixedly mounted on the bottom plate. The protruding ends of the two separation cylinders are respectively connected to two support plates. The support plates are slidably matched with the bottom plate.

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