Gas pipe bending and expanding device and method

Abstract

The present invention provides a gas pipe bending and flaring device and method, which relates to the field of gas pipe processing technology. The gas pipe bending and flaring device includes a processing operation table, the upper surface of the processing operation table is detachably connected to a positioning cylinder, and the surface of the processing operation table is penetrated by two first through-holes and two second through-holes. In the present invention, the first driving cylinder is started, and the two first driving cylinders move with the linkage movable plate, and the linkage movable plate moves with the two movable vertical bars, so that the horizontal connecting rod moves with the U-shaped mounting seat, and the U-shaped mounting seat moves with the bending roller shaft, so that the two bending roller shafts contact the gas pipe fitting and start bending, and the rotating gear rotates the threaded rotating rod, so that the movable block moves horizontally on the outer surface of the threaded rotating rod, thereby allowing the flaring head to move toward the inside of the gas pipe fitting and flare the end of the gas pipe fitting. The entire device can complete the bending and flaring operations at one time, greatly shortening the processing time.

Description

Technical Field

[0001] The present invention relates to the technical field of gas pipe fitting processing, in particular to a gas pipe fitting bending and expanding device and method. Background Art

[0002] Gas pipe fittings are key components of the gas transmission system, covering a variety of products such as pipe fittings, valves, safety equipment, etc., and are widely used in municipal gas, household gas and industrial scenarios. During the processing of gas pipe fittings, processing equipment is required to bend and expand them.

[0003] Patent publication number CN112222305B, this invention relates to the technical field related to the processing of bent pipe fittings, and discloses a pipe bending and flaring integrated device, including a frame, a controller is installed on the top surface of the frame, a servo motor is installed on the bottom of the frame by bolts, the output shaft of the servo motor passes through the workbench of the frame and extends to the top of the frame, the end of the output shaft of the servo motor is fixedly connected to a rotary table, a threaded positioning column is installed on the top surface of the rotary table, a bending wheel is inserted on the threaded positioning column, a compression nut is threadedly connected to the threaded positioning column, a mounting plate is installed on one side of the top surface of the frame, and a threaded hole is opened on the mounting plate. The pipe bending and flaring integrated device effectively positions the bent pipe fittings in the bent state, facilitates the subsequent flaring processing and port calibration of the bent pipe fittings, avoids the secondary clamping and disassembly of the bent pipe fittings, thereby effectively shortening the processing time of the workpiece and improving the production efficiency of the product.

[0004] Although the above patent can complete the bending and flaring operations on one machine, the bending and flaring are completed in steps, that is, bending is required first and then flaring. Although this method does not require secondary clamping, the processing process is still relatively cumbersome and cannot further shorten the processing time of the workpiece. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the present invention provides a gas pipe bending and expanding device and method, which solves the problem in the existing technology that bending and expanding are completed in steps, that is, bending is required first and then expanding. Although this method does not require secondary clamping, the processing process is still relatively cumbersome and cannot further shorten the workpiece processing time.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a gas pipe bending and expanding device, comprising a processing operation table, the upper surface of the processing operation table is detachably connected to a positioning cylinder, the surface of the processing operation table is penetrated by two first through-holes and two second through-holes, a bending component is provided between the two first through-holes, an arc-shaped moving block is provided inside the two second through-holes, a reset component is connected between the arc-shaped moving block and the second through-hole, the lower surface of the arc-shaped moving block is fixedly connected to a first limiting plate, the upper surface of the arc-shaped moving block is fixedly connected to a second limiting plate, and the upper surface of the second limiting plate is fixedly connected A rectangular mounting plate is connected, the upper surface of the rectangular mounting plate is fixedly connected with a vertical connecting block, the side wall of the vertical connecting block is rotatably connected with a threaded rotating rod, a linkage assembly is provided between the threaded rotating rod and the processing operation table, the outer surface of the threaded rotating rod is threadedly connected with a movable block, the movable block is slidably connected to the upper surface of the rectangular mounting plate, one side of the movable block is fixedly connected with a mounting and fixing sleeve, the interior of the mounting and fixing sleeve is slidably connected with a movable connecting shaft, the end of the movable connecting shaft is fixedly connected with an expansion head, the outer side wall of the mounting and fixing sleeve is threadedly connected with a locking rod, and an oil supply assembly is installed on the upper surface of the rectangular mounting plate.

[0009] Preferably, the upper surface of the processing table is fixedly connected to a rectangular column, the positioning cylinder is sleeved on the outer surface of the rectangular column, the top of the rectangular column is fixedly connected to a threaded column, the outer surface of the threaded column is threadedly connected to a nut, and the nut fits with the top of the positioning cylinder.

[0010] Preferably, the bending assembly includes two vertical connecting plates fixedly connected to the lower surface of the processing operating table, a first driving cylinder is fixedly connected to the side wall of the vertical connecting plate, the piston ends of the two first driving cylinders are commonly fixedly connected to a linkage movable plate, the upper surface of the linkage movable plate is fixedly connected to two movable vertical bars, the two movable vertical bars are respectively slidably connected to the corresponding first through-openings, the top of the movable vertical bar is fixedly connected to a horizontal connecting rod, the end of the horizontal connecting rod is fixedly connected to a U-shaped mounting seat, and the inner wall of the U-shaped mounting seat is rotatably connected to a bending roller shaft.

[0011] Preferably, the lower surface of the processing table is fixedly connected to a second driving cylinder, the piston end of the second driving cylinder is fixedly connected to a linkage lifting plate, the upper surface of the linkage lifting plate is fixedly connected to two vertical lifting rods, the end of the vertical lifting rod away from the linkage lifting plate is fixedly connected to a lifting support block, and an avoidance opening adapted to the lifting support block is opened through the surface of the processing table.

[0012] Preferably, the reset assembly includes an arc-shaped outer rod fixedly connected to the inner wall of the second through-hole, the interior of the arc-shaped outer rod is slidably connected to the arc-shaped inner rod, one end of the arc-shaped inner rod away from the arc-shaped outer rod is fixedly connected to the arc-shaped moving block, and the outer surfaces of the arc-shaped outer rod and the arc-shaped inner rod are sleeved with a connecting spring, one end of the connecting spring is fixedly connected to the inner wall of the second through-hole, and the other end of the connecting spring is fixedly connected to the arc-shaped moving block.

[0013] Preferably, the linkage assembly includes a rotating gear and an arc-shaped rack, the rotating gear is fixedly connected to the end of the threaded rotating rod, the arc-shaped rack is fixedly connected to the upper surface of the processing table, and the rotating gear is meshed with the arc-shaped rack.

[0014] Preferably, the lower surface of the movable block is fixedly connected with two fixed sliding blocks, the upper surface of the rectangular mounting plate is provided with two sliding grooves, and the fixed sliding blocks are slidably connected inside the corresponding sliding grooves.

[0015] Preferably, the top of the vertical connecting block is fixedly connected to two vertical fixing columns, and the tops of the two vertical fixing columns are jointly fixedly connected to the lubricating oil tank body, the upper surface of the rectangular mounting plate is fixedly connected to the oil delivery cylinder by two L-shaped mounting rods, one side of the oil delivery cylinder body is fixedly connected to a second connecting hose, the other end of the second connecting hose is connected to a movable connecting shaft, the bottom of the lubricating oil tank body is fixedly connected to the first connecting hose, and the other end of the first connecting hose is fixedly connected to the upper surface of the oil delivery cylinder body, the upper surface of the movable movable block is fixedly connected to a driving mounting block, and a driving connecting rod is fixedly connected to the side wall of the driving mounting block, the driving connecting rod extends away from one end of the driving mounting block to the interior of the oil delivery cylinder body and is fixedly connected to a driving piston, the driving piston is slidably connected to the inner wall of the oil delivery cylinder body, and a one-way valve is provided on both the first connecting hose and the second connecting hose.

[0016] Preferably, a first oil chamber is opened inside the movable connecting shaft, the second connecting hose is connected to the first oil chamber, a second oil chamber connected to the first oil chamber is opened inside the expansion head, and a plurality of oil outlet holes are opened on the outer surface of the expansion head, and the plurality of oil outlet holes are all connected to the second oil chamber.

[0017] A bending and expanding method for a gas pipe bending and expanding device, the bending and expanding method comprising the following steps:

[0018] S1. Place the gas pipe fitting on the two lifting support blocks, with the middle of the gas pipe fitting in contact with the outer surface of the positioning cylinder. Activate the second driving cylinder. The piston end of the second driving cylinder drives the linkage lifting plate upward, which in turn drives the two vertical lifting rods upward. The vertical lifting rods drive the lifting support blocks upward, thereby raising the gas pipe fitting to the same height as the expansion end.

[0019] S2. Loosen the locking rod and move the movable connecting shaft toward the outside of the mounting sleeve, allowing the two movable connecting shafts to move the same distance so that the two expansion heads are inserted into the ports of the gas pipe fittings and pressed against each other. Then, tighten the locking rod so that the locking rod and the movable connecting shaft are pressed against each other, preventing the movable connecting shaft from moving. Then, start the second driving cylinder to lower the lifting support block to the bottom of the processing table.

[0020] S3. Start the first driving cylinders. The two first driving cylinders move the linked movable plates, which move the two movable vertical bars, so that the horizontal connecting rod moves the U-shaped mounting seat, and the U-shaped mounting seat moves the bending rollers, so that the two bending rollers contact the gas pipe fittings and start bending.

[0021] S4. When the two ends of the gas pipe are bent, the gas pipe moves inside the second through-hole through the expanding head and the arc-shaped moving block. Since the rotating gear is meshed with the arc-shaped rack, the rotating gear rotates while moving, and the rotating gear rotates the threaded rotating rod, causing the moving block to move horizontally on the outer surface of the threaded rotating rod, thereby allowing the expanding head to move into the gas pipe, expanding the end of the gas pipe.

[0022] S5. During the movement of the movable block, the driving mounting block drives the driving piston to move via the driving connecting rod. The driving piston squeezes the lubricating oil in the oil delivery cylinder into the second connecting hose, then into the first oil chamber through the second connecting hose, and then into the second oil chamber, and finally flows out through the multiple oil outlet holes.

[0023] S6. After the bending and flaring are completed, the locking rod is loosened and the movable connecting shaft is moved toward the inside of the mounting sleeve to separate the flaring head from the gas pipe fitting. Then, the arc-shaped moving block is reset by the action of the connecting spring. During the resetting process of the arc-shaped moving block, the threaded rotating rod rotates in the opposite direction to reset the movable block. At the same time, the driving piston is reset, so that the lubricating oil inside the lubricating oil tank body can flow into the oil delivery cylinder body through the first connecting hose.

[0024] (3) Beneficial effects

[0025] The present invention provides a device and method for bending and expanding gas pipe fittings. It has the following beneficial effects:

[0026] 1. The present invention starts the first driving cylinder, and the two first driving cylinders move with the linkage movable plates, and the linkage movable plates move with the two movable vertical bars, so that the horizontal connecting rod moves with the U-shaped mounting seat, and the U-shaped mounting seat moves with the bending roller shaft, so that the two bending roller shafts contact the gas pipe fitting and start bending, and the rotating gear rotates the threaded rotating rod, so that the movable block moves horizontally on the outer surface of the threaded rotating rod, thereby allowing the expanding head to move toward the interior of the gas pipe fitting to expand the end of the gas pipe fitting. The entire equipment can complete the bending and expanding operations at one time, greatly shortening the processing time.

[0027] 2. In the present invention, the driving mounting block moves with the driving piston via the driving connecting rod. The driving piston squeezes the lubricating oil inside the oil delivery cylinder into the second connecting hose, enters the first oil chamber through the second connecting hose, and then enters the second oil chamber, and finally flows out through multiple oil outlet holes. During the resetting process of the arc-shaped moving block, the threaded rotating rod rotates in the opposite direction to reset the moving block. At the same time, the driving piston is reset, so that the lubricating oil inside the lubricating oil tank passes through the first connecting hose to the inside of the oil delivery cylinder, thereby enabling synchronous oil supply and ensuring lubrication during flaring.

[0028] 3. The present invention places the gas pipe fitting on two lifting support blocks, the middle part of the gas pipe fitting fits with the outer surface of the positioning cylinder, and starts the second driving cylinder. The piston end of the second driving cylinder brings the linkage lifting plate up, and the linkage lifting plate brings the two vertical lifting rods up, and the vertical lifting rods bring the lifting support block up, so that the gas pipe fitting rises to the same height as the expansion head, which is convenient for the gas pipe fitting to be connected with the expansion head. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the three-dimensional structure from a first perspective of a gas pipe bending and expanding device provided by the present invention;

[0030] Figure 2 A schematic diagram of the third perspective structure of a gas pipe bending and expanding device provided by the present invention;

[0031] Figure 3 A top view of a gas pipe bending and expanding device provided by the present invention;

[0032] Figure 4 A schematic diagram of the bending roller structure of a gas pipe bending and expanding device provided by the present invention;

[0033] Figure 5 A schematic diagram of the lifting support block structure of a gas pipe bending and expanding device provided by the present invention;

[0034] Figure 6A schematic diagram of the engagement between a rotating gear and an arc-shaped rack of a gas pipe bending and expanding device provided by the present invention;

[0035] Figure 7 A schematic structural diagram of an oil supply assembly of a gas pipe bending and expanding device provided by the present invention;

[0036] Figure 8 This is a cross-sectional view of the movable connecting shaft and expanding mouth of a gas pipe bending and expanding device provided by the present invention.

[0037] Among them, 1. Processing table; 2. Positioning cylinder; 3. First through-hole; 4. Moving vertical bar; 5. Horizontal connecting rod; 6. U-shaped mounting seat; 7. Bending roller; 8. Vertical connecting plate; 9. First driving cylinder; 10. Linkage moving plate; 11. Second driving cylinder; 12. Linkage lifting plate; 13. Vertical lifting rod; 14. Lifting support block; 15. Second through-hole; 16. Arc-shaped moving block; 17. First limiting plate; 18. Second limiting plate; 19. Rectangular mounting plate; 20. Vertical connecting block; 21. Threaded rotating rod; 22. Rotating gear; 2 3. Arc-shaped rack; 24. Movable block; 25. Fixed slider; 26. Sliding groove; 27. Mounting sleeve; 28. Active connecting shaft; 29. ​​Locking rod; 30. Expansion head; 31. Vertical fixing column; 32. Lubricating oil tank; 33. L-shaped mounting rod; 34. Oil delivery cylinder; 35. Drive mounting block; 36. Drive connecting rod; 37. Drive piston; 38. First connecting hose; 39. Second connecting hose; 40. First oil chamber; 41. Second oil chamber; 42. Oil outlet; 43. Arc-shaped outer rod; 44. Arc-shaped inner rod; 45. Connecting spring. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] Example

[0040] like Figure 1-8 As shown, an embodiment of the present invention provides a gas pipe bending and expanding device, comprising a processing operation table 1, a positioning cylinder 2 being detachably connected to the upper surface of the processing operation table 1, a rectangular column being fixedly connected to the upper surface of the processing operation table 1, the positioning cylinder 2 being sleeved on the outer surface of the rectangular column, a threaded column being fixedly connected to the top of the rectangular column, a nut being threadedly connected to the outer surface of the threaded column, and the nut being fitted with the top of the positioning cylinder 2, so that the positioning cylinder 2 can be disassembled and easily replaced;

[0041] The surface of the processing table 1 is penetrated by two first through-holes 3 and two second through-holes 15. A bending assembly is provided between the two first through-holes 3. The bending assembly includes two vertical connecting plates 8 fixedly connected to the lower surface of the processing table 1. A first driving cylinder 9 is fixedly connected to the side wall of the vertical connecting plate 8. The piston ends of the two first driving cylinders 9 are fixedly connected to a linkage moving plate 10. The upper surface of the linkage moving plate 10 is fixedly connected to two moving vertical bars 4. The two moving vertical bars 4 are respectively slidably connected to the corresponding first through-holes 3. The top of the moving vertical bar 4 A horizontal connecting rod 5 is fixedly connected, the end of the horizontal connecting rod 5 is fixedly connected to a U-shaped mounting seat 6, the inner wall of the U-shaped mounting seat 6 is rotatably connected to a bending roller shaft 7, the lower surface of the processing operation table 1 is fixedly connected to a second driving cylinder 11, the piston end of the second driving cylinder 11 is fixedly connected to a linkage lifting plate 12, the upper surface of the linkage lifting plate 12 is fixedly connected to two vertical lifting rods 13, the end of the vertical lifting rod 13 away from the linkage lifting plate 12 is fixedly connected to a lifting support block 14, and a avoidance opening adapted to the lifting support block 14 is opened through the surface of the processing operation table 1;

[0042] An arc-shaped moving block 16 is provided inside each of the two second through-openings 15. A reset assembly is connected between the arc-shaped moving block 16 and the second through-opening 15. The reset assembly includes an arc-shaped outer rod 43 fixedly connected to the inner wall of the second through-opening 15. An arc-shaped inner rod 44 is slidably connected inside the arc-shaped outer rod 43. One end of the arc-shaped inner rod 44 away from the arc-shaped outer rod 43 is fixedly connected to the arc-shaped moving block 16. A connecting spring 45 is sleeved on the outer surfaces of the arc-shaped outer rod 43 and the arc-shaped inner rod 44. One end of the connecting spring 45 is fixedly connected to the inner wall of the second through-opening 15, and the other end of the connecting spring 45 is fixedly connected to the arc-shaped moving block 16.

[0043] The lower surface of the arc-shaped moving block 16 is fixedly connected to a first limiting plate 17, the upper surface of the arc-shaped moving block 16 is fixedly connected to a second limiting plate 18, the upper surface of the second limiting plate 18 is fixedly connected to a rectangular mounting plate 19, the upper surface of the rectangular mounting plate 19 is fixedly connected to a vertical connecting block 20, the side wall of the vertical connecting block 20 is rotatably connected to a threaded rotating rod 21, a linkage assembly is provided between the threaded rotating rod 21 and the processing operation table 1, the linkage assembly includes a rotating gear 22 and an arc-shaped rack 23, the rotating gear 22 is fixedly connected to the end of the threaded rotating rod 21, the arc-shaped rack 23 is fixedly connected to the upper surface of the processing operation table 1, and the rotating gear 22 is meshed with the arc-shaped rack 23;

[0044] The outer surface of the threaded rotating rod 21 is threadedly connected with a movable block 24, and the movable block 24 is slidably connected to the upper surface of the rectangular mounting plate 19. The lower surface of the movable block 24 is fixedly connected with two fixed sliders 25. The upper surface of the rectangular mounting plate 19 is provided with two sliding grooves 26. The fixed sliders 25 are slidably connected to the corresponding sliding grooves 26. One side of the movable block 24 is fixedly connected with a mounting sleeve 27. The interior of the mounting sleeve 27 is slidably connected with a movable connecting shaft 28. The mounting sleeve 27 and the movable connecting shaft 28 can be slidably connected through the slider and the sliding groove. Ensure that the mounting sleeve 27 and the movable connecting shaft 28 will not be separated. When the movable connecting shaft 28 slides into place, the expansion head 30 is just tightly against the port of the gas pipe fitting. The end of the movable connecting shaft 28 is fixedly connected to the expansion head 30. The outer wall of the mounting sleeve 27 is threadedly connected to the locking rod 29. The upper surface of the rectangular mounting plate 19 is installed with an oil supply assembly. The top of the vertical connecting block 20 is fixedly connected to two vertical fixing columns 31. The tops of the two vertical fixing columns 31 are fixedly connected to the lubricating oil box body 32. The upper surface of the rectangular mounting plate 19 is fixedly connected to the delivery The oil cylinder 34 has a second connecting hose 39 fixedly connected to one side of the oil delivery cylinder 34, and the other end of the second connecting hose 39 is connected to the movable connecting shaft 28. The bottom of the lubricating oil tank 32 is fixedly connected to a first connecting hose 38, and the other end of the first connecting hose 38 is fixedly connected to the upper surface of the oil delivery cylinder 34. The upper surface of the movable block 24 is fixedly connected to a driving mounting block 35, and a driving connecting rod 36 is fixedly connected to the side wall of the driving mounting block 35. The driving connecting rod 36 extends from one end of the driving mounting block 35 to the interior of the oil delivery cylinder 34 and is fixedly connected to a driving piston 37. The driving piston 37 is slidingly connected to the inner wall of the oil delivery cylinder 34, and a one-way valve is provided on the first connecting hose 38 and the second connecting hose 39. The one-way valve is used to ensure the one-way inflow and outflow of the lubricating oil, and in the initial state, it is necessary to ensure that there is lubricating oil inside the oil delivery cylinder 34. A first oil chamber 40 is provided inside the movable connecting shaft 28, and the second connecting hose 39 is connected to the first oil chamber 40. A second oil chamber 41 connected to the first oil chamber 40 is provided inside the expansion head 30, and a plurality of oil outlet holes 42 are provided on the outer surface of the expansion head 30, and the plurality of oil outlet holes 42 are all connected to the second oil chamber 41.

[0045] The present invention also includes a bending and expanding method of a gas pipe bending and expanding device, the bending and expanding method comprising the following steps:

[0046] S1. Place the gas pipe fitting on the two lifting support blocks 14, with the middle of the gas pipe fitting in contact with the outer surface of the positioning cylinder 2. Activate the second driving cylinder 11. The piston end of the second driving cylinder 11 drives the linkage lifting plate 12 upward. The linkage lifting plate 12 drives the two vertical lifting rods 13 upward. The vertical lifting rods 13 drive the lifting support blocks 14 upward, thereby raising the gas pipe fitting to the same height as the expansion end 30.

[0047] S2. Loosen the locking rod 29 and move the movable connecting shaft 28 toward the outside of the mounting sleeve 27. Allow the two movable connecting shafts 28 to move the same distance, so that the two expansion heads 30 are inserted into the ports of the gas pipe fitting and tighten (at this time, the expansion heads 30 do not completely enter the ports of the gas pipe fitting). Then, tighten the locking rod 29 so that the locking rod 29 and the movable connecting shaft 28 abut against each other, preventing the movable connecting shaft 28 from moving. Then, start the second driving cylinder 11 to lower the lifting support block 14 to the bottom of the processing table 1.

[0048] S3. Start the first driving cylinders 9. The two first driving cylinders 9 move the linked movable plates 10. The linked movable plates 10 move the two movable vertical bars 4. This causes the horizontal connecting rod 5 to move the U-shaped mounting seat 6. The U-shaped mounting seat 6 moves the bending rollers 7. This causes the two bending rollers 7 to contact the gas pipe fittings and start bending.

[0049] S4. When the two ends of the gas pipe are bent, the gas pipe moves inside the second through-opening 15 through the expanding head 30 and the arc-shaped moving block 16. Since the rotating gear 22 is meshed with the arc-shaped rack 23, the rotating gear 22 rotates while moving, and the rotating gear 22 rotates the threaded rotating rod 21, causing the moving block 24 to move horizontally on the outer surface of the threaded rotating rod 21, thereby allowing the expanding head 30 to move into the gas pipe, expanding the end of the gas pipe.

[0050] S5. During the movement of the movable block 24, the driving mounting block 35 drives the driving piston 37 to move via the driving connecting rod 36. The driving piston 37 squeezes the lubricating oil inside the oil delivery cylinder 34 into the second connecting hose 39. The oil then flows into the first oil chamber 40 through the second connecting hose 39, and then into the second oil chamber 41, and finally flows out through the multiple oil outlet holes 42.

[0051] S6. After the bending and flaring are completed, the locking rod 29 is loosened, and the movable connecting shaft 28 is moved toward the inside of the mounting sleeve 27 to separate the flaring head 30 from the gas pipe fitting. Then, the arc-shaped moving block 16 is reset by the action of the connecting spring 45. During the resetting process of the arc-shaped moving block 16, the threaded rotating rod 21 rotates in the opposite direction to reset the movable moving block 24. At the same time, the driving piston 37 is reset, so that the lubricating oil inside the lubricating oil tank 32 can flow into the oil delivery cylinder 34 through the first connecting hose 38.

[0052] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the statement "comprising a reference structure" does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A gas pipe bending and expanding device, comprising a processing operation table (1), characterized in that: The upper surface of the processing operation table (1) is detachably connected to a positioning cylinder (2), and the surface of the processing operation table (1) is provided with two first through-holes (3) and two second through-holes (15) arranged in an arc shape, a bending component is provided between the two first through-holes (3), and an arc-shaped moving block (16) is provided inside the two second through-holes (15), and a reset component is connected between the arc-shaped moving block (16) and the second through-holes (15), and the lower surface of the arc-shaped moving block (16) is fixedly connected to a first limiting plate (17), and the upper surface of the arc-shaped moving block (16) is fixedly connected to a second limiting plate (18), and the upper surface of the second limiting plate (18) is fixedly connected to a rectangular mounting plate (19), and the upper surface of the rectangular mounting plate (19) is fixedly connected to A vertical connecting block (20) is provided, and a threaded rotating rod (21) is rotatably connected to the side wall of the vertical connecting block (20), and a linkage assembly is provided between the threaded rotating rod (21) and the processing operation table (1), and the outer surface of the threaded rotating rod (21) is threadedly connected to a movable block (24), and the movable block (24) is slidably connected to the upper surface of the rectangular mounting plate (19), and one side of the movable block (24) is fixedly connected to a mounting sleeve (27), and the interior of the mounting sleeve (27) is slidably connected to a movable connecting shaft (28), and the end of the movable connecting shaft (28) is fixedly connected to an expansion head (30), and the outer side wall of the mounting sleeve (27) is threadedly connected to a locking rod (29), and an oil supply assembly is installed on the upper surface of the rectangular mounting plate (19); The linkage assembly comprises a rotating gear (22) and an arc-shaped rack (23), wherein the rotating gear (22) is fixedly connected to the end of the threaded rotating rod (21), and the arc-shaped rack (23) is fixedly connected to the upper surface of the processing operating table (1), and the rotating gear (22) and the arc-shaped rack (23) are meshed and connected.

2. The gas pipe bending and expanding device according to claim 1, characterized in that: The upper surface of the processing operation table (1) is fixedly connected to a rectangular column, the positioning cylinder (2) is sleeved on the outer surface of the rectangular column, the top of the rectangular column is fixedly connected to a threaded column, the outer surface of the threaded column is threadedly connected to a nut, and the nut is fitted with the top of the positioning cylinder (2).

3. The gas pipe bending and expanding device according to claim 2, characterized in that: The bending assembly comprises two vertical connecting plates (8) fixedly connected to the lower surface of the processing operation table (1), a first driving cylinder (9) fixedly connected to the side wall of the vertical connecting plate (8), the piston ends of the two first driving cylinders (9) are fixedly connected to a linkage movable plate (10), the upper surface of the linkage movable plate (10) is fixedly connected to two movable vertical bars (4), the two movable vertical bars (4) are respectively slidably connected to the inside of the corresponding first through-hole (3), the top of the movable vertical bar (4) is fixedly connected to a horizontal connecting rod (5), the end of the horizontal connecting rod (5) is fixedly connected to a U-shaped mounting seat (6), and the inner wall of the U-shaped mounting seat (6) is rotatably connected to a bending roller shaft (7).

4. The gas pipe bending and expanding device according to claim 3, characterized in that: The lower surface of the processing operation table (1) is fixedly connected to a second driving cylinder (11), the piston end of the second driving cylinder (11) is fixedly connected to a linkage lifting plate (12), the upper surface of the linkage lifting plate (12) is fixedly connected to two vertical lifting rods (13), one end of the vertical lifting rod (13) away from the linkage lifting plate (12) is fixedly connected to a lifting support block (14), and a avoidance opening adapted to the lifting support block (14) is provided through the surface of the processing operation table (1).

5. The gas pipe bending and expanding device according to claim 4, characterized in that: The reset assembly comprises an arc-shaped outer rod (43) fixedly connected to the inner wall of the second through-hole (15); the inner part of the arc-shaped outer rod (43) is slidably connected to the arc-shaped inner rod (44); one end of the arc-shaped inner rod (44) away from the arc-shaped outer rod (43) is fixedly connected to the arc-shaped moving block (16); the outer surfaces of the arc-shaped outer rod (43) and the arc-shaped inner rod (44) are sleeved with a connecting spring (45); one end of the connecting spring (45) is fixedly connected to the inner wall of the second through-hole (15), and the other end of the connecting spring (45) is fixedly connected to the arc-shaped moving block (16).

6. The gas pipe bending and expanding device according to claim 5, characterized in that: The lower surface of the movable block (24) is fixedly connected to two fixed sliders (25), and the upper surface of the rectangular mounting plate (19) is provided with two sliding grooves (26), and the fixed sliders (25) are slidably connected inside the corresponding sliding grooves (26).

7. The gas pipe bending and expanding device according to claim 6, characterized in that: The top of the vertical connecting block (20) is fixedly connected to two vertical fixing columns (31), and the tops of the two vertical fixing columns (31) are fixedly connected to a lubricating oil tank (32). The upper surface of the rectangular mounting plate (19) is fixedly connected to an oil delivery cylinder (34) through two L-shaped mounting rods (33). One side of the oil delivery cylinder (34) is fixedly connected to a second connecting hose (39), and the other end of the second connecting hose (39) is connected to a movable connecting shaft (28). The bottom of the lubricating oil tank (32) is fixedly connected to a first connecting hose (38). The other end of the hose (38) is fixedly connected to the upper surface of the oil delivery cylinder (34). The upper surface of the movable block (24) is fixedly connected to a driving mounting block (35). A driving connecting rod (36) is fixedly connected to the side wall of the driving mounting block (35). One end of the driving connecting rod (36) away from the driving mounting block (35) extends to the interior of the oil delivery cylinder (34) and is fixedly connected to a driving piston (37). The driving piston (37) is slidably connected to the inner wall of the oil delivery cylinder (34). Both the first connecting hose (38) and the second connecting hose (39) are provided with a one-way valve.

8. The gas pipe bending and expanding device according to claim 7, characterized in that: A first oil chamber (40) is provided inside the movable connecting shaft (28), the second connecting hose (39) is connected to the first oil chamber (40), a second oil chamber (41) connected to the first oil chamber (40) is provided inside the expansion head (30), and a plurality of oil outlet holes (42) are provided on the outer surface of the expansion head (30), and the plurality of oil outlet holes (42) are all connected to the second oil chamber (41).

9. A gas pipe bending and expanding method according to claim 8, characterized in that: The bending and flaring method comprises the following steps: S1. Place the gas pipe fitting on the two lifting support blocks (14), with the middle of the gas pipe fitting in contact with the outer surface of the positioning cylinder (2), start the second driving cylinder (11), and the piston end of the second driving cylinder (11) drives the linkage lifting plate (12) to rise, the linkage lifting plate (12) drives the two vertical lifting rods (13) to rise, and the vertical lifting rods (13) drive the lifting support blocks (14) to rise, so that the gas pipe fitting is raised to the same height as the expansion head (30); S2, loosen the locking rod (29), move the movable connecting shaft (28) toward the outside of the mounting sleeve (27), and allow the two movable connecting shafts (28) to move the same distance, so that the two expansion heads (30) are inserted into the ports of the gas pipe fitting and pressed against each other, and then tighten the locking rod (29) so that the locking rod (29) and the movable connecting shaft (28) are pressed against each other, so that the movable connecting shaft (28) cannot move, and then start the second driving cylinder (11) to make the lifting support block (14) descend to the bottom of the processing operation table (1); S3, start the first driving cylinder (9), the two first driving cylinders (9) move with the linkage moving plate (10), the linkage moving plate (10) moves with the two moving vertical bars (4), so that the horizontal connecting rod (5) moves with the U-shaped mounting seat (6), and the U-shaped mounting seat (6) moves with the bending roller (7), so that the two bending rollers (7) come into contact with the gas pipe fitting and start bending; S4. When the two ends of the gas pipe are bent, the gas pipe moves inside the second through-hole (15) with the arc-shaped moving block (16) through the expanding mouthpiece (30). Since the rotating gear (22) is meshed with the arc-shaped rack (23), the rotating gear (22) rotates while moving. The rotating gear (22) rotates with the threaded rotating rod (21), causing the moving block (24) to move horizontally on the outer surface of the threaded rotating rod (21), thereby allowing the expanding mouthpiece (30) to move into the interior of the gas pipe and expand the end of the gas pipe. S5. During the movement of the movable block (24), the driving mounting block (35) drives the driving piston (37) to move by driving the connecting rod (36). The driving piston (37) squeezes the lubricating oil in the oil delivery cylinder (34) into the second connecting hose (39), enters the first oil chamber (40) through the second connecting hose (39), and then enters the second oil chamber (41), and finally flows out through the multiple oil outlet holes (42); S6. After the bending and flaring are completed, the locking rod (29) is loosened, and the movable connecting shaft (28) is moved toward the inside of the mounting sleeve (27), so that the flaring head (30) is separated from the gas pipe. Then, the arc-shaped moving block (16) is reset by the action of the connecting spring (45). During the reset of the arc-shaped moving block (16), the threaded rotating rod (21) rotates in the opposite direction, so that the movable moving block (24) is reset. At the same time, the driving piston (37) is reset, so that the lubricating oil inside the lubricating oil tank (32) is transferred to the inside of the oil delivery cylinder (34) through the first connecting hose (38).

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