A processing method for ultra-thin wall stainless steel pipes rolled by cold rolling process

Abstract

The present invention provides a processing method for ultra-thin wall stainless steel pipes rolled by a cold rolling process, which relates to the field of steel pipe processing. The processing method for ultra-thin wall stainless steel pipes rolled by a cold rolling process includes a base and a plurality of steel pipes. Two mounting plates are fixedly connected to one side of the base, and a plurality of forming dies and a plurality of annular pipes are fixedly connected to one of the mounting plates. The processing method for ultra-thin wall stainless steel pipes rolled by a cold rolling process simultaneously performs rolling processing on a plurality of steel pipes to complete the rolling processing of ultra-thin wall stainless steel pipes. This processing method for steel pipes can simultaneously perform rolling work on a plurality of steel pipes, improve the working efficiency of components such as hydraulic cylinders, touch display screens, pump bodies, and clamping hydraulic cylinders, and improve the resource utilization efficiency. Moreover, the inside of the steel pipe is supported by a support inner mold, reducing the possibility of deformation of the steel pipe during the rolling processing work and increasing the probability of forming the steel pipe by cold rolling processing.

Description

Technical Field

[0001] The present invention relates to a processing method for stainless steel pipes, specifically a processing method for ultra-thin wall stainless steel pipes rolled by a cold rolling process, belonging to the technical field of steel pipe processing. Background Art

[0002] Because the chromium content in ultra-thin wall stainless steel pipes is relatively high, after chromium in the ultra-thin wall stainless steel pipes reacts with oxygen and oxidants, a passivation effect is produced, and a thin, tough and dense passivation film is formed on the surface, which plays a role of an anti-corrosion protective coating film. This characteristic makes ultra-thin wall stainless steel pipes become a commonly used building material in construction projects.

[0003] With the gradually increasing demand for ultra-thin wall stainless steel pipes, the production and processing of ultra-thin wall stainless steel pipes have become new favorites in steel processing. Currently, the production of ultra-thin wall stainless steel pipes mainly includes cold rolling and hot rolling, among which the rolling method for small-diameter seamless steel pipes is mainly cold rolling.

[0004] However, in the process of rolling and processing ultra-thin wall stainless steel pipes, especially in some small enterprises, there are some problems with the cold rolling process. Taking the cold rolling process as an example, in one reciprocating movement of the rolling mill rolls of the cold rolling equipment, the workpiece to be rolled only feeds once and the steel pipe is rolled once, that is, within one cycle of the reciprocating movement of the rolls, the rolls only do work once and can only process one steel pipe at a time, and it is necessary for workers to apply lubricating fluid to the steel pipe, resulting in high costs. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] The purpose of the present invention is to provide a processing method for ultra-thin wall stainless steel pipes rolled by a cold rolling process to solve the problems in the prior art that within one cycle of the reciprocating movement of the rolls, the rolls only do work once, can only process one steel pipe at a time, and it is necessary for workers to apply lubricating fluid to the steel pipe, resulting in high costs. [[ID=2(4]]

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present invention is realized through the following technical solutions: A processing method for ultra-thin wall stainless steel pipes rolled by a cold rolling process, including a base and multiple steel pipes. The multiple steel pipes are simultaneously rolled and processed to complete the rolling and processing of ultra-thin wall stainless steel pipes. Two mounting plates are fixedly connected to one side of the base. One of the mounting plates is fixedly connected with multiple forming dies and multiple annular pipes. A water pipe is arranged on one side of the multiple annular pipes. The annular pipes apply lubricating oil to the outer side of the moving steel pipes, achieving the purpose of automatically applying lubricating fluid to the inner support die and the outer side of the steel pipes. On the other side of the top of the base, there are an installation box, a hydraulic cylinder, a touch display screen, a transmission vertical plate, and multiple support inner dies. The inside of the steel pipes is supported by the support inner dies, reducing the possibility of deformation of the steel pipes during the rolling and processing work. There are multiple U-shaped pipes arranged at the rear of the base. A square pipe is fixedly connected to one side of the multiple U-shaped pipes. A three-way valve and a pump body are arranged between the square pipe and the water pipe. Clamping frames are arranged on the front and rear sides of the base. Clamping hydraulic cylinders are fixedly connected to one side of the two clamping frames. A fixed vertical plate is fixedly sleeved outside the clamping hydraulic cylinders. A fixed round rod is fixedly connected between the fixed vertical plate close to the U-shaped pipe and the base. A positive and negative motor and a pneumatic cylinder are arranged on one side of the fixed vertical plate far from the U-shaped pipe.

[0009] Step 1: Input a numerical control program into the touch display screen to control the work of the hydraulic cylinder, clamping hydraulic cylinder, pneumatic cylinder, positive and negative motor, pump body, and three-way valve by the touch display screen. The numerical control program composed of input codes, coordinate systems, machining instructions, auxiliary functions, and program formats controls the cold rolling processing of the steel pipes by each component.

[0010] Step 2: After the touch display screen controls the two clamping frames to move successively, the clamping and fixing of multiple steel pipes are completed.

[0011] The support inner die is wrapped by the water-absorbing sponge driven by the clamping hydraulic cylinder. One end of the steel pipe extends into the sponge ring. The touch display screen controls components such as the pump body, bending pipe, three-way valve, horizontal pipe, telescopic pipe, water pipe, and square pipe to replenish lubricating fluid to the water-absorbing sponge and the sponge ring at any time.

[0012] Step 3: Subsequently, the hydraulic cylinder continues to work, pushing multiple support inner dies into the multiple steel pipes respectively to support the steel pipes. At the same time, the touch display screen controls the hydraulic cylinder to pause working.

[0013] Step 4: The touch display screen controls the clamping hydraulic cylinder to drive the clamping frame to move, and the steel pipes lose clamping and fixing. The reworking hydraulic cylinder pushes the support inner die and the steel pipes to move synchronously through the forming die to complete the cold rolling and shaping processing work.

[0014] Multiple support inner dies all pass through the water-absorbing sponge and then insert into the steel pipes. The steel pipes pass through the sponge ring and then insert into the forming die. While completing the simultaneous processing of multiple steel pipes, the lubricating fluid is automatically applied to multiple support inner dies and steel pipes.

[0015] Step Five: After the hydraulic cylinder drives the rolled steel pipe to reset, it pauses working, and two clamping hydraulic cylinders push two clamping frames to clamp and fix the steel pipe.

[0016] Step Six: The hydraulic cylinder continues to work to drive the support inner mold to move. Under the block of the stripping plate, the separation of the support inner mold from the steel pipe is completed.

[0017] Input the numerical control program inside the touch display screen to control the working steps and time of the hydraulic cylinder starting work, pausing work, returning work, etc. The program operation can be remotely started by adding a remote controller and a sensor.

[0018] The touch display screen controls the hydraulic cylinder to push multiple support inner molds to be inserted into the interiors of multiple steel pipes respectively. By controlling the working speed of the hydraulic cylinder, the speed of inserting the support inner mold into the steel pipe is controlled within 10s / m - 20s / m, reducing the stress damage to the steel pipe.

[0019] The hydraulic cylinder pushes the support inner mold and the steel pipe to move synchronously through the forming die. The touch display screen controls the working speed of the hydraulic cylinder to decrease, and the speed of the steel pipe passing through the forming die is controlled within 20s / m - 25s / m to carry out the cold rolling and shaping processing work on the outer surface of the steel pipe.

[0020] The touch display screen controls the pump body and the three-way valve to work. By controlling the change of the output end of the three-way valve, the work of replenishing the lubricating fluid to the water-absorbing sponge or the sponge ring at any time is completed.

[0021] The lubricating fluid is applied during the process of the support inner mold passing through the water-absorbing sponge, and the lubricating fluid is applied during the process of the steel pipe passing through the interior of the sponge ring, changing the traditional local application or spray application method of the lubricating fluid and reducing the waste of the lubricating fluid.

[0022] Under the block of the clamping frame and the stripping plate, the separation of the support inner mold from the steel pipe is completed, and the transmission frame can realize the transportation work of the processed steel pipe and transport the steel pipe to the top of the cleaning pool.

[0023] Multiple steel pipes are respectively arranged on one side of multiple support inner molds. Another mounting plate is fixedly connected with multiple support rings inside, and both clamping frames are fixedly connected with multiple clamping plates. Multiple steel pipes are arranged between the two clamping frames.

[0024] After the two clamping frames move successively, the steel pipe is clamped and fixed by 5 parts such as the clamping frame, the clamping plate, and the clamping hydraulic cylinder, completing the clamping and fixing work of multiple steel pipes.

[0025] The transmission vertical plate is fixedly connected to one side of the hydraulic cylinder, the installation box is fixedly connected to the top of the base, the touch display screen is installed on one side of the installation box, multiple support inner molds are all fixedly connected to one side of the transmission vertical plate, a through groove is opened on one side of the transmission vertical plate, one clamping frame is fixedly connected with an auxiliary plate, and the other clamping frame is provided with

[0026] There is a square groove inside the square groove of the auxiliary plate fixed by the clamping frame to complete the limit fixation between the two clamping frames.

[0027] Sliding grooves are provided at the top of the base. Clamping plates are arranged on both sides inside the sliding grooves. The two clamping plates are respectively fixedly connected to the two clamping frames. A square limiting plate is fixedly connected to the bottom of the clamping plate close to the U-shaped pipe. A clamping groove is provided at the bottom of the base. The square limiting plate penetrates through the clamping groove. The square limiting plate fixed to one of the clamping plates penetrates through the clamping groove. The clamping frames are supported and limited by the clamping plates and the square limiting plates.

[0028] A guide rail is fixedly connected to one side of the base away from the U-shaped pipe. A sliding seat is arranged inside the guide rail. A transmission frame is installed on the top of the sliding seat. A plurality of elastic plates are fixedly connected to one side of the transmission frame. The air cylinder is fixedly connected between the forward and reverse motor and the base. The output end of the forward and reverse motor penetrates through the adjacent fixed vertical plate. The air cylinder works to push the clamping frame, and the working forward and reverse motor drives the clamping frame to rotate and be parallel to the base.

[0029] Sponge rings are fixedly connected inside a plurality of annular pipes. Water guide thin pipes are fixedly connected to one side of a plurality of annular pipes. One ends of a plurality of water guide thin pipes are fixedly connected to the water pipe. The pump body transports lubricating fluid into a plurality of annular pipes through a bent pipe, a three-way valve, a connecting pipe, a cross pipe and the water pipe.

[0030] The pump body is fixedly connected to one side of the base. A bent pipe is fixedly connected between the pump body and the three-way valve. Connecting pipes are fixedly connected to both sides of the bent pipe. A cross pipe is fixedly connected between the water pipe and one of the connecting pipes. Bent rods are fixedly connected between the two connecting pipes and the base. The output end of the pump body is provided with a three-way valve through the bent pipe to transport lubricating fluid into a plurality of U-shaped pipes or into a plurality of annular pipes.

[0031] A telescopic pipe is fixedly connected between the other connecting pipe and the square pipe. Long strip plates are fixedly connected to one side of a plurality of U-shaped pipes. One ends of a plurality of long strip plates are fixedly connected to the clamping frames. The moving clamping frames drive the U-shaped pipes to move synchronously through the long strip plates, so that the water absorption sponges fixedly connected inside the U-shaped pipes are deformed and sleeved on the outer ends of the support inner molds.

[0032] Demolding plates are fixedly connected to one sides of a plurality of U-shaped pipes away from the support inner molds. While the steel pipes are clamped and fixed by the clamping frames, one ends of the steel pipes are blocked and limited by the demolding plates during movement. The continuously moving support inner mold can be pulled out from the limited steel pipes. Water absorption sponges are fixedly connected inside the U-shaped pipes. A plurality of round grooves are provided inside the U-shaped pipes. A plurality of liquid guide grooves are provided on one side of the square pipe. A plurality of round grooves are provided inside the U-shaped pipes. Therefore, the water absorption sponges absorb the lubricating oil inside the U-shaped pipes. When the support inner mold moves through the water absorption sponges, the lubricating oil is applied to the outer side of the support inner mold. A plurality of liquid guide grooves are respectively arranged on the tops of a plurality of U-shaped pipes.

[0033] The present invention provides a processing method for ultra-thin wall stainless steel pipes rolled by a cold rolling process, and the beneficial effects thereof are as follows:

[0034] 1. In the processing method for ultra-thin wall stainless steel pipes rolled by a cold rolling process, a support inner mold is inserted into the inside of a steel pipe clamped and fixed by parts such as a clamping frame, a clamping plate, and a clamping hydraulic cylinder to support the inside of the steel pipe. Subsequently, the hydraulic cylinder pushes the steel pipe through a forming die fixed to an installation plate via a transmission vertical plate to perform rolling processing on multiple steel pipes simultaneously, completing the rolling processing of the ultra-thin wall stainless steel pipes. This processing method for steel pipes can perform rolling work on multiple steel pipes simultaneously, improving the working efficiency of parts such as the hydraulic cylinder, touch display screen, pump body, and clamping hydraulic cylinder, and improving the resource utilization efficiency. Moreover, the inside of the steel pipe is supported by the support inner mold, reducing the possibility of deformation of the steel pipe during the rolling processing work, increasing the probability of cold rolling processing and forming of the steel pipe, and reducing the cost loss caused by failures.

[0035] 2. In the processing method for ultra-thin wall stainless steel pipes rolled by a cold rolling process, the water-absorbing sponge fixedly connected inside the U-shaped pipe is deformed and sleeved on one end of the outer side of the support inner mold. And a plurality of circular grooves are provided inside the U-shaped pipe. Therefore, the water-absorbing sponge absorbs the lubricating oil inside the U-shaped pipe, and when the support inner mold moves through the water-absorbing sponge, the lubricating oil is smeared on the outer side of the support inner mold. And an annular pipe is fixedly connected to one side of the installation plate, and a sponge ring is fixedly connected inside the annular pipe. Therefore, before the steel pipe penetrates the forming die, it first penetrates the sponge ring, and the sponge ring absorbs the lubricating oil inside the annular pipe and smears it on the outer side of the steel pipe, completing the automatic smearing of the lubricating liquid on the outer side of the support inner mold and the outer side of the steel pipe, reducing the physical effort and danger in smearing the lubricating liquid by the staff, protecting the support inner mold and the steel pipe through the lubricating liquid, and reducing the probability of rolling failure.

[0036] 3. In the processing method for ultra-thin wall stainless steel pipes rolled by a cold rolling process, the operation of a three-way valve is controlled. When the output channel inside the connecting pipe where the telescopic pipe is installed is opened, the pump body transports the lubricating liquid into a plurality of U-shaped pipes through a bent pipe, a three-way valve, a connecting pipe, a telescopic pipe, and a square pipe. When the output channel inside the connecting pipe where the horizontal pipe is installed is opened, the pump body transports the lubricating liquid into a plurality of annular pipes through a bent pipe, a three-way valve, a connecting pipe, a horizontal pipe, and a water pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 is a schematic diagram of the structure of the connecting pipe of the present invention;

[0039] Figure 3 is a schematic diagram of the structure of the fixed vertical plate of the present invention;

[0040] Figure 4 Structural schematic diagram of the pallet of the present invention;

[0041] Figure 5 Structural schematic diagram of the square limiting plate of the present invention;

[0042] Figure 6 Structural schematic diagram of the clamping frame of the present invention;

[0043] Figure 7 Structural schematic diagram of the stripping template of the present invention;

[0044] Figure 8 Partial structural schematic diagram of the U-shaped pipe of the present invention;

[0045] Figure 9 For the present invention Figure 8 Structural schematic diagram of part A;

[0046] Figure 10 Structural schematic diagram of the long bench of the present invention;

[0047] Figure 11 Structural schematic diagram of the mounting plate of the present invention;

[0048] Figure 12 Partial structural schematic diagram of Figure B of the present invention;

[0049] Figure 13 Structural schematic diagram of the square pipe of the present invention;

[0050] Figure 14 Structural schematic diagram of the transmission frame of the present invention.

[0051] In the figure: 1. Base; 2. Installation box; 3. Hydraulic cylinder; 4. Touch display screen; 5. Transmission vertical plate; 6. Through groove; 7. Support inner mold; 8. Steel pipe; 9. Mounting plate; 10. Support ring; 11. Forming die; 12. Clamping frame; 13. Clamping plate; 14. Clamping hydraulic cylinder; 15. Fixed vertical plate; 16. Fixed round rod; 17. Pneumatic cylinder; 18. Reversible motor; 19. Sliding groove; 20. Card slot; 21. Pallet; 22. Square limiting plate; 23. U-shaped pipe; 24. Stripping template; 25. Water-absorbing sponge; 26. Square pipe; 27. Round groove; 28. Liquid guide groove; 29. Water pipe; 30. Water guide capillary; 31. Annular pipe; 32. Sponge ring; 33. Pump body; 34. Bending pipe; 35. Three-way valve; 36. Connecting pipe; 37. Horizontal pipe; 38. Telescopic pipe; 39. Guide rail; 40. Transmission frame; 41. Sliding seat; 42. Long strip board; 43. Auxiliary board. Specific embodiments

[0052] The embodiment of the present invention provides a processing method for ultra-thin-wall stainless steel pipes rolled by a cold rolling process.

[0053] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 and Figure 14 The base 1 and multiple steel pipes 8, two mounting plates 9 are fixedly connected to one side of the base 1, and multiple forming dies 11 and multiple annular pipes 31 are fixedly connected to one of the mounting plates 9. A water pipe 29 is arranged on one side of the multiple annular pipes 31. On the other side of the top of the base 1, there are an installation box 2, a hydraulic cylinder 3, a touch display screen 4, a transmission vertical plate 5 and multiple support inner molds 7. Multiple U-shaped pipes 23 are arranged at the rear of the base 1. A square pipe 26 is fixedly connected to one side of the multiple U-shaped pipes 23. A three-way valve 35 and a pump body 33 are arranged between the square pipe 26 and the water pipe 29. Clamping frames 12 are arranged on both the front and rear sides of the base 1. Clamping hydraulic cylinders 14 are fixedly connected to one side of the two clamping frames 12. A fixed vertical plate 15 is fixedly sleeved outside the clamping hydraulic cylinder 14. A fixed round rod 16 is fixedly connected between the fixed vertical plate 15 close to the U-shaped pipe 23 and the base 1. A positive and negative motor 18 and a pneumatic cylinder 17 are arranged on one side of the fixed vertical plate 15 far from the U-shaped pipe 23

[0054] Input a numerical control program into the touch display screen 4 to control the operation of the hydraulic cylinder 3, the clamping hydraulic cylinder 14, the pneumatic cylinder 17, the positive and negative motor 18, the pump body 33, and the three-way valve 35. The numerical control program composed of input codes, coordinate systems, machining instructions, auxiliary functions, and program formats controls the cold rolling process of the steel pipe 8 by each component;

[0055] Step 2: After the touch display screen 4 controls the two clamping frames 12 to move successively, the clamping and fixing of multiple steel pipes 8 are completed;

[0056] While step 2 is in progress, the support inner mold 7 is wrapped by the water-absorbing sponge 25 driven by the clamping hydraulic cylinder 14. One end of the steel pipe 8 extends into the sponge ring 32. The touch display screen 4 controls parts such as the pump body 33, the bending pipe 34, the three-way valve 35, the horizontal pipe 37, the telescopic pipe 38, the water pipe 29, and the square pipe 26 to replenish lubricating fluid to the water-absorbing sponge 25 and the sponge ring 32 at any time;

[0057] Step 3: Subsequently, the hydraulic cylinder 3 continues to work, pushing multiple support inner molds 7 into multiple steel pipes 8 respectively to support the steel pipes 8. At the same time, the touch display screen 4 controls the hydraulic cylinder 3 to pause working;

[0058] Step 4: Touch the display screen 4 to control the clamping hydraulic cylinder 14 to drive the clamping frame 12 to move, and the steel pipe 8 loses its clamping and fixation. The hydraulic cylinder 3 that resumes work drives the support inner mold 7 and the steel pipe 8 to move synchronously through the forming die 11 to complete the cold rolling and shaping processing work;

[0059] Multiple support inner molds 7 all pass through the water-absorbing sponge 25 and are inserted into the inside of the steel pipe 8. The steel pipe 8 passes through the sponge ring 32 and is inserted into the forming die 11. While completing the simultaneous processing of multiple steel pipes 8, the lubricating fluid is automatically applied to multiple support inner molds 7 and steel pipes 8.

[0060] Step 5: After the hydraulic cylinder 3 drives the rolled steel pipe 8 to reset, it pauses working. The two clamping hydraulic cylinders 14 push the two clamping frames 12 to clamp and fix the steel pipe 8;

[0061] Step 6: The hydraulic cylinder 3 continues to work to drive the support inner mold 7 to move. Blocked by the stripping plate 24, the separation of the support inner mold 7 from the steel pipe 8 is completed.

[0062] Specifically, a hydraulic cylinder 3 is arranged on the top of the base 1. The hydraulic cylinder 3 can push multiple support inner molds 7 to move through the transmission vertical plate 5, insert the support inner molds 7 into the inside of the steel pipe 8 clamped and fixed by the clamping frame 12, and support the inside of the steel pipe 8. Subsequently, the hydraulic cylinder 3 pushes the steel pipe 8 through the forming die 11 fixed on the mounting plate 9 through the transmission vertical plate 5 to perform rolling processing on multiple steel pipes 8 simultaneously, completing the rolling processing of the ultra-thin wall stainless steel pipe. This processing method for the steel pipe 8 can perform rolling work on multiple steel pipes 8 simultaneously, improve the work of parts such as the hydraulic cylinder 3, the touch display screen 4, the pump body 33, and the clamping hydraulic cylinder 14, and improve the resource utilization efficiency. And the inside of the steel pipe 8 is supported by the support inner mold 7, reducing the possibility of deformation of the steel pipe 8 during the rolling processing work, increasing the probability of cold rolling processing and forming of the steel pipe 8, and reducing the cost loss caused by failures.

[0063] At the same time, the U-shaped pipe 23 moves synchronously with the clamping frame 12. Therefore, when the two clamping frames 12 clamp and fix the steel pipe 8, multiple U-shaped pipes 23 will move and sleeve onto one end of multiple support inner molds 7, and lubricating fluid is applied to the outside of the support inner molds 7 during the movement of the multiple support inner molds 7, reducing the damage to the steel pipe 8 caused by the support inner mold 7 entering the inside of the steel pipe 8. And a ring pipe 31 is arranged on one side of the forming die 11, and lubricating oil is applied to the outside of the moving steel pipe 8 through the ring pipe 3, achieving the purpose of automatically applying lubricating fluid to the outside of the support inner mold 7 and the steel pipe 8, reducing the steps participated by the staff in the processing of the steel pipe 8, reducing the investment in labor costs, and being able to reduce the time for the staff to work beside the starting equipment and ensure the safety of the staff.

[0064] Please refer to again Figure 3 and Figure 11, Multiple steel pipes 8 are respectively arranged on one side of multiple support inner molds 7. Inside another mounting plate 9, multiple support rings 10 are fixedly connected. Both clamping frames 12 are fixedly connected with multiple clamping plates 13. Multiple steel pipes 8 are arranged between the two clamping frames 12. The transmission vertical plate 5 is fixedly connected to one side of the hydraulic cylinder 3. The mounting box 2 is fixedly connected to the top of the base 1. The touch display screen 4 is installed on one side of the mounting box 2. Multiple support inner molds 7 are all fixedly connected to one side of the transmission vertical plate 5. A through groove 6 is formed on one side of the transmission vertical plate 5. One of the clamping frames 12 is fixedly connected with an auxiliary plate 43, and a square groove is formed on the other clamping frame 12.

[0065] Implementation step one:

[0066] Input the control program for the processing procedure of the steel pipes 8 into the touch display screen 4, and control the work of parts such as the hydraulic cylinder 3, the clamping hydraulic cylinder 14, the pneumatic cylinder 17, the forward and reverse motor 18, the pump body 33, and the bending pipe 34 through the touch display screen 4 {By inputting the numerical control program into the touch display screen 4, the basic working mode control of electrical equipment such as working time, working sequence, pause work, start work, reset work, and stop work is carried out, which is an existing publicly applied technology and will not be discussed and designed here}.

[0067] First, the U-shaped pipe 23 connected to the clamping hydraulic cylinder 14 fixed to the clamping frame 12 works, pushing the clamping frame 12 fixed with multiple clamping plates 13 to the limit. Subsequently, the multiple steel pipes 8 are inserted into the multiple clamping plates 13 one by one, with one end of the steel pipe 8 inserted into the annular pipe 31, so that the steel pipe 8 is supported by the annular pipe 31 and the clamping plates 13. Subsequently, control the clamping hydraulic cylinder 14 fixed to the other clamping frame 12 to work, pushing the clamping frame 12 towards the steel pipe 8. After the two clamping frames 12 move successively, the steel pipe 8 is clamped and fixed by parts such as the clamping frame 12, the clamping plates 13, and the clamping hydraulic cylinder 14, completing the clamping and fixing work of the multiple steel pipes 8. And inside the square groove of the auxiliary plate 43 fixed to the clamping frame 12, the limit fixation between the two clamping frames 12 is completed. <~

[0068] When the steel pipe 8 is clamped and fixed, the hydraulic cylinder 3 works. The working hydraulic cylinder 3 pushes the multiple support inner molds 7 to move through the transmission vertical plate 5, so that the multiple support inner molds 7 are respectively inserted into the multiple steel pipes 8 to support the inside of the steel pipes 8. When the transmission vertical plate 5 moves a certain distance towards the U-shaped pipe 23, the hydraulic cylinder 3 pauses working while the two clamping hydraulic cylinders 14 start working. When the transmission vertical plate 5 and the support inner molds 7 pause moving, the clamping hydraulic cylinder 14 pulls the clamping frame 12 to reset, providing space for the movement of the transmission vertical plate 5.

[0069] Subsequently, the hydraulic cylinder 3 that continues to work drives the transmission vertical plate 5 to move, causing the transmission vertical plate 5 to push the support inner mold 7 and the unfastened steel pipe 8 to move synchronously. The steel pipe 8 penetrates through the forming die 11 fixed to the mounting plate 9, and under the action of the support inner mold 7 and the forming die 11, the steel pipe 8 is rolled into an ultra-thin wall stainless steel pipe, completing the cold rolling process of the steel pipe 8.

[0070] Please refer to again Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 14 As shown in FIGS.

[0071] Step 2 of the implementation:

[0072] After the hydraulic cylinder 3 drives the steel pipe 8 that has been rolled and formed in cooperation with the support inner mold 7 and the mounting plate 9 to reset, the hydraulic cylinder 3 pauses working. Subsequently, two clamping hydraulic cylinders 14 push two clamping frames 12 to move towards a plurality of steel pipes 8 simultaneously, enabling a plurality of clamping plates 13 to perform the clamping and fixing work on the plurality of steel pipes 8. Subsequently, the hydraulic cylinder 3 that continues to work drives the support inner mold 7 to move through the transmission vertical plate 5. Under the clamping and fixing of the steel pipe 8 by the clamping frame 12, and with the U-shaped pipe 23 fixing the demolding plate 24 moving to one side of the steel pipe 8, at this time, while the steel pipe 8 is clamped and fixed by the clamping frame 12, one end of it is blocked and limited by the demolding plate 24 during movement. Therefore, the continuously moving support inner mold 7 can be pulled out from the interior of the limited steel pipe 8, completing the separation work between the support inner mold 7 and the steel pipe 8, and causing the steel pipe 8 to lose its fixation and fall onto the top of the base 1.

[0073] During the movement of the clamping frame 12, the clamping plate 21 fixed to the clamping frame 12 moves inside the sliding groove 19, and the square limiting plate 22 fixed to one of the clamping plates 21 penetrates through the clamping groove 20, supporting and limiting the clamping frame 12 through the clamping plate 21 and the square limiting plate 22.

[0074] When needed, the driving frame 40 can be connected and installed with a material-taking air cylinder, so that when the clamping frame 12 moves towards the steel pipe 8 after processing, the elastic plate fixed on the driving frame 40 is sleeved outside the steel pipe 8. Subsequently, after the clamping frame 12 moves back to its original position, a fixed vertical plate 15 installed on one clamping frame 12 is supported by the air cylinder 17 and the forward and reverse motor 18. At this time, the air cylinder 17 works to push the clamping frame 12, so that after the clamping frame 12 leaves the top of the base 1, the forward and reverse motor 18 works. The working forward and reverse motor 18 drives the clamping frame 12 to rotate 90°. Then the clamping frame 12 rotates to be parallel to the base 1. At this time, the driving frame 40 can leave the top of the base 1 along the guide rail 39. As long as a driving motor is installed between the sliding seat 41 and the driving frame 40, the driving frame 40 can drive multiple steel pipes 8 to leave the top of the base 1, and then adjust the positions of the steel pipes 8 to complete the blanking of the steel pipes 8. And the driving frame 40 can return along the original path to complete the feeding of the steel pipes 8 to the top of the base 1. Subsequently, the forward and reverse motor 18 and the air cylinder 17 work to drive the clamping frame 12 to return to its original position.

[0075] Please refer to again Figure 2 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13 ,A sponge ring 32 is fixedly connected inside each of the multiple annular pipes 31. A water guide thin pipe 30 is fixedly connected to one side of each of the multiple annular pipes 31. One end of each of the multiple water guide thin pipes 30 is fixedly connected to the water pipe 29. The pump body 33 is fixedly connected to one side of the base 1. A bent pipe 34 is fixedly connected between the pump body 33 and the three-way valve 35. Connecting pipes 36 are fixedly connected to both sides of the bent pipe 34. A horizontal pipe 37 is fixedly connected between the water pipe 29 and one of the connecting pipes 36. Bent rods are fixedly connected between the two connecting pipes 36 and the base 1. A telescopic pipe 38 is fixedly connected between the other connecting pipe 36 and the square pipe 26. A long strip plate 42 is fixedly connected to one side of each of the multiple U-shaped pipes 23. One end of each of the multiple long strip plates 42 is fixedly connected to the clamping frame 12. A water-absorbing sponge 25 is fixedly connected inside the U-shaped pipe 23. A plurality of round grooves 27 are formed inside the U-shaped pipe 23. A plurality of liquid guide grooves 28 are formed on one side of the square pipe 26. The plurality of liquid guide grooves 28 are respectively arranged at the tops of the multiple U-shaped pipes 23.

[0076] Implementation step three:

[0077] When the two clamping brackets 12 clamp and fix the steel pipe 8, a long strip plate 42 is fixedly connected between the clamping bracket 12 and the U-shaped pipe 23. Therefore, the moving clamping bracket 12 drives the U-shaped pipe 23 to move synchronously through the long strip plate 42, so that the water-absorbing sponge 25 fixedly connected inside the U-shaped pipe 23 is deformed and sleeved on the outer end of the support inner mold 7. And a plurality of circular grooves 27 are formed inside the U-shaped pipe 23. Therefore, the water-absorbing sponge 25 absorbs the lubricating oil inside the U-shaped pipe 23, and when the support inner mold 7 moves through the water-absorbing sponge 25, the lubricating oil is applied to the outer side of the support inner mold 7. And an annular pipe 31 is fixedly connected to one side of the mounting plate 9, and a sponge ring 32 is fixedly connected inside the annular pipe 31. Therefore, before the steel pipe 8 penetrates through the forming die 11, it first penetrates through the sponge ring 32, so that the sponge ring 32 absorbs the lubricating oil inside the annular pipe 31 and applies it to the outer side of the steel pipe 8, completing the automatic lubricating fluid application to the outer sides of the support inner mold 7 and the steel pipe 8, reducing the physical effort and danger in the lubricating fluid application by the staff, protecting the support inner mold 7 and the steel pipe 8 through the lubricating fluid, and reducing the probability of rolling failure.

[0078] A three-way valve 35 is installed at the output end of the pump body 33 through a bent pipe 34, and connecting pipes 36 are fixedly connected to both sides of the three-way valve 35. A telescopic pipe 38 is fixedly connected between one of the connecting pipes 36 and the square pipe 26, and the other connecting pipe 36 is fixedly connected to a water pipe 29 through a horizontal pipe 37. At the same time, a water guide thin pipe 30 is fixedly connected between the water pipe 29 and a plurality of annular pipes 31.

[0079] By controlling the operation of the three-way valve 35, when the output channel inside the connecting pipe 36 where the telescopic pipe 38 is installed is opened in the three-way valve 35, the pump body 33 transports the lubricating fluid into a plurality of U-shaped pipes 23 through the bent pipe 34, the three-way valve 35, the connecting pipe 36, the telescopic pipe 38 and the square pipe 26. When the output channel inside the connecting pipe 36 where the horizontal pipe 37 is installed is opened in the three-way valve 35, the pump body 33 transports the lubricating fluid into a plurality of annular pipes 31 through the bent pipe 34, the three-way valve 35, the connecting pipe 36, the horizontal pipe 37 and the water pipe 29.

[0080] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A processing method for ultra-thin wall stainless steel pipes rolled by cold rolling process, comprising a base and a plurality of steel pipes, characterized in that: On one side of the base, two mounting plates are fixedly connected. One of the mounting plates is fixedly connected with a plurality of forming dies and a plurality of annular tubes. A water pipe is arranged on one side of the plurality of annular tubes. On the other side of the top of the base, an installation box, a hydraulic cylinder, a touch display screen and a plurality of supporting inner molds are arranged. On the rear side of the base, a plurality of U-shaped tubes are arranged. A square tube is fixedly connected to one side of the plurality of U-shaped tubes. A three-way valve and a pump body are arranged between the square tube and the water pipe. Clamping frames are arranged on both the front side and the rear side of the base. Clamping hydraulic cylinders are fixedly connected to one side of the two clamping frames; A plurality of clamping plates are fixedly connected to both of the two clamping frames; Sponge rings are fixedly connected inside the plurality of annular tubes; Demolding plates are fixedly connected to one side of the plurality of U-shaped tubes far away from the supporting inner molds. Absorbent sponges are fixedly connected inside the U-shaped tubes; Step 1: Input a numerical control program into the touch display screen. The touch display screen controls the hydraulic cylinder, the clamping hydraulic cylinder, the pump body and the three-way valve. The numerical control program composed of input codes, coordinate systems, machining instructions, auxiliary functions and program formats controls the cold rolling process of steel pipes; Step 2: After the touch display screen controls the two clamping frames to move successively, a plurality of steel pipes are clamped and fixed. The U-shaped tubes move synchronously with the clamping frames; The supporting inner molds are wrapped by absorbent sponges, and one end of the steel pipe extends into the sponge rings; The touch display screen controls the pump body, the three-way valve, the water pipe and the square tube to supply lubricating fluid to the absorbent sponges and the sponge rings; Step 3: The hydraulic cylinder continues to work, and pushes the plurality of supporting inner molds into the plurality of steel pipes respectively to support the steel pipes. The touch display screen controls the hydraulic cylinder to pause working; Step 4: The touch display screen controls the clamping hydraulic cylinder to drive the clamping frame to move, and the steel pipes lose clamping and fixing; The supporting inner molds penetrate through the absorbent sponges and then insert into the steel pipes; The steel pipes penetrate through the sponge rings and then insert into the forming dies; Automatically apply lubricating fluid to the plurality of supporting inner molds and steel pipes; Complete the cold rolling and shaping work; Step 5: After the hydraulic cylinder drives the cold-rolled and formed steel pipes to reset and then pauses working, the two clamping hydraulic cylinders push the two clamping frames to clamp and fix the steel pipes; Under the clamping and fixing of the clamping frames on the steel pipes, and the demolding plates fixed by the U-shaped tubes will move to one side of the steel pipes. At this time, while the steel pipes are clamped and fixed by the clamping frames, one end is blocked and limited by the moving demolding plates. Therefore, the continuously moving supporting inner molds can be pulled out from the limited steel pipes to complete the separation work of the supporting inner molds and the steel pipes, so that the steel pipes lose fixation and fall to the top of the base.

2. The processing method of an ultra-thin wall stainless steel pipe rolled by a cold rolling process according to claim 1, characterized in that: Input a numerical control program into the touch display screen to control the working steps and time of the hydraulic cylinder to start working, pause working and return. By adding a remote controller and a sensor, remotely start the program to run.

3. The processing method of an ultra-thin wall stainless steel pipe rolled by a cold rolling process according to claim 1, characterized in that: The touch display screen controls the hydraulic cylinder to push the plurality of supporting inner molds into the plurality of steel pipes respectively. By controlling the working speed of the hydraulic cylinder, the speed of inserting the supporting inner molds into the steel pipes is controlled at 10 s / m - 20 s / m to reduce the stress damage to the steel pipes.

4. A processing method for ultra-thin wall stainless steel pipes rolled by a cold rolling process according to claim 1, characterized in that: The hydraulic cylinder pushes the supporting inner molds and the steel pipes to move synchronously through the forming dies. The touch display screen controls the working speed of the hydraulic cylinder to decrease, and the speed of the steel pipes passing through the forming dies is controlled at 20 s / m - 25 s / m to carry out the cold rolling and shaping processing work on the outer surface of the steel pipes.

5. A processing method for ultra-thin wall stainless steel pipes rolled by a cold rolling process according to claim 1, characterized in that: The touch display screen controls the operation of the pump body and the three-way valve. By changing the output end of the three-way valve, the work of replenishing the lubricating fluid to the water-absorbing sponge or the sponge ring at any time is completed.

6. A processing method for ultra-thin wall stainless steel pipes rolled by a cold rolling process according to claim 1, characterized in that: During the process of the support inner mold passing through the water-absorbing sponge, the lubricating fluid is applied. During the process of the steel pipe passing through the inside of the sponge ring, the lubricating fluid is applied. This changes the traditional local application or spray application method of the lubricating fluid and reduces the waste of the lubricating fluid.

7. A processing method for an ultra-thin wall stainless steel pipe rolled by a cold rolling process according to claim 1, characterized in that: A clamping groove is provided at the bottom of the base. A guide rail is fixedly connected to one side of the base away from the U-shaped pipe. A sliding seat is arranged inside the guide rail. A transmission frame is installed on the top of the sliding seat. Under the blockage of the clamping frame and the demolding plate, the support inner mold and the steel pipe are separated, and the transmission frame can realize the transportation of the processed steel pipe and transport the steel pipe to the top of the cleaning pool.

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