A stainless steel pipe outer surface corrugation forming equipment

Abstract

The present invention relates to the technical field of stainless steel pipe processing equipment, and discloses a corrugated forming equipment for the outer surface of a stainless steel pipe, comprising a rotating connecting pipe, one end of the rotating connecting pipe is fixedly sleeved with a positioning sleeve, one side of the positioning sleeve is fixedly installed with a cutter head assembly, a first cutting die is movably arranged on the inner side of the cutter head assembly, and the first cutting die is tilted and eccentrically arranged on the cutter head assembly, the first cutting die rotates in the opposite direction relative to the rotating connecting pipe and the positioning sleeve under the thrust of the stainless steel pipe feeding, and the corrugated groove inside the first cutting die performs corrugated forming processing on the outer surface of the stainless steel pipe. By eccentrically and tiltingly arranging the first cutting die in the cutter head assembly, the first cutting die rotates in the opposite direction relative to the first positioning plate under the thrust of the stainless steel pipe feeding, so that the corrugated groove inside the first cutting die is convenient to cut into the outer side of the stainless steel pipe, and the first cutting die rotates around the outer side of the stainless steel pipe, so as to perform corrugated forming processing on the outer surface of the stainless steel pipe.

Description

Technical Field

[0001] The present application relates to the field of stainless steel pipe processing equipment, and in particular to a stainless steel pipe outer surface corrugation forming equipment. Background Art

[0002] Stainless steel pipe is a kind of steel widely used in industrial pipelines such as petroleum, chemical, medical, food, light industry, mechanical instruments and mechanical structural components. Processing the outer surface of the stainless steel pipe into a corrugated shape will make the steel pipe have strong tensile strength and compressive resistance, as well as good flexural properties and excellent guiding and retraction functions, which can effectively absorb the displacement and deformation during pipeline operation.

[0003] However, the existing stainless steel pipe outer surface corrugated forming equipment uses a cutting die to shape the outer surface of the corrugated pipe when processing the stainless steel pipe. When the outer surface of the stainless steel pipe is corrugated, the tool needs to apply pressure to the outer surface of the corrugated pipe, making the outer surface of the stainless steel pipe concave. The minimum inner diameter of the processing part of the cutting die is smaller than that of the stainless steel pipe, which makes it difficult for the end of the stainless steel pipe to be stuck into the cutting die, and then processed, affecting the processing efficiency of the corrugated forming of the outer surface of the stainless steel pipe. Summary of the invention

[0004] The present application proposes a stainless steel pipe outer surface corrugated forming device, which has the advantage of facilitating the die cutting into the outer side of the stainless steel pipe, and is used to solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a corrugated forming device for the outer surface of a stainless steel pipe, comprising a rotating connecting pipe, one end of the rotating connecting pipe is fixedly sleeved with a positioning sleeve, one side of the positioning sleeve is fixedly installed with a cutter head assembly, a first cutting die is movably arranged on the inner side of the cutter head assembly, and the first cutting die is inclined and eccentrically arranged on the cutter head assembly, the inner side of the first cutting die is provided with a corrugated groove for processing and forming corrugations on the outer surface of the stainless steel pipe, the first cutting die rotates in the opposite direction relative to the rotating connecting pipe and the positioning sleeve under the thrust of the stainless steel pipe feeding, and the corrugated groove on the inner side of the first cutting die performs corrugated forming on the outer surface of the stainless steel pipe.

[0006] Furthermore, the inner movable sleeve of the positioning rotating sleeve is provided with a limiting sleeve, and the limiting sleeve is made of brass material.

[0007] Furthermore, the inner diameter of the first cutting die on the side facing the limiting sleeve decreases uniformly from far to near the limiting sleeve.

[0008] Furthermore, a limiting sleeve is fixedly mounted on the inner side of the first positioning disk, the limiting sleeve is tilted relative to the first positioning disk, and the limiting sleeve is eccentrically disposed on the first positioning disk, and the first cutting die is disposed inside the limiting sleeve.

[0009] Further, an intermediate positioning plate, a second positioning plate and a limiting plate are sequentially provided on the side of the first positioning plate away from the positioning rotating sleeve, and the limiting plate, the second positioning plate, the intermediate positioning plate and the first positioning plate are fixed together on the positioning rotating sleeve by bolts, wherein the first positioning plate, the intermediate positioning plate and the second positioning plate are fixed by bolts, wherein the inner side of the second positioning plate is provided with a limiting sleeve, and the limiting sleeve on the inner side of the second positioning plate is symmetrically arranged on both sides of the limiting sleeve on the inner side of the first positioning plate, the limiting sleeve in the second positioning plate is opposite to the eccentric direction of the limiting sleeve in the first positioning plate, the middle part of the limiting sleeve in the second positioning plate is provided with a second cutting die, and the pitch of the corrugated groove in the second cutting die is the same as the pitch of the corrugated groove in the first cutting die, the sides of the first cutting die and the second cutting die are respectively fixedly sleeved with a linkage clamping shaft, the inner side of the intermediate positioning plate is movably sleeved with an intermediate sleeve, the middle part of the intermediate sleeve is provided with a through hole adapted to the outer diameter of the bellows, the intermediate sleeve is provided with a sliding groove located outside the through hole, and the sliding groove is adapted to the linkage clamping shaft.

[0010] Furthermore, the groove depth value of the corrugated groove in the second cutting die is greater than the groove depth value in the first cutting die.

[0011] Furthermore, the cutter head assembly is also composed of a third positioning plate and a fourth positioning plate, a positioning sleeve is movably arranged in the middle between the third positioning plate and the fourth positioning plate, a limiting ring plate is provided on the outer edge between the third positioning plate and the fourth positioning plate, and adjusting screw shafts are respectively threadedly sleeved on both sides of the limiting ring plate, and one end of the two adjusting screw shafts are respectively movably sleeved on both sides of the positioning sleeve, the two adjusting screw shafts rotate relative to the limiting ring plate to control the position of the positioning sleeve to move laterally inside the third positioning plate and the fourth positioning plate.

[0012] 1. The present application provides a corrugated forming device for the outer surface of a stainless steel tube. The first cutting die in the cutter head assembly is eccentrically and tiltedly set, and the first cutting die is used to rotate in the opposite direction relative to the first positioning plate under the thrust of the stainless steel tube feeding, so that the corrugated groove on the inner side of the first cutting die can cut into the outer side of the stainless steel tube, and the corrugated groove part of the first cutting die can rotate around the outer side of the stainless steel tube to perform corrugated forming processing on the outer surface of the stainless steel tube.

[0013] 2. The present application provides a stainless steel tube outer surface corrugation forming equipment, which sets a first cutting die and a second cutting die through a cutting head assembly, and sets a linked rotating intermediate sleeve between the first cutting die and the second cutting die, and sets the groove depth value of the corrugated groove in the second cutting die to be greater than the groove depth of the first cutting die, so that the first cutting die first performs preliminary processing on the outer surface of the stainless steel tube, and then further processes it by the second cutting die, so that the outer surface of the stainless steel corrugated tube can be corrugated to a deeper degree through progressive processing on both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0015] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the cutter head assembly in the first embodiment of the present invention;

[0017] Figure 2 for Figure 1 Schematic diagram of the cross-section structure;

[0018] Figure 3 for Figure 2 A front view of

[0019] Figure 4 for Figure 1 A schematic diagram of the structure of the first positioning plate;

[0020] Figure 5 for Figure 4 A front view of

[0021] Figure 6 for Figure 1 Schematic diagram of the structure of the intermediate positioning plate;

[0022] Figure 7 for Figure 6 A front view of

[0023] Figure 8 This is a schematic diagram of the structure of the cutter head assembly in the second embodiment of the present invention;

[0024] Fig. 9 for Figure 8 A front view of

[0025] Fig.10 for Figure 8 Schematic diagram of the cross-section structure;

[0026] Fig.11 for Fig.10 Front view

[0027] Fig.12 for Fig.10 A schematic diagram of the structure of the third positioning plate;

[0028] Fig.13 for Fig. 9 Schematic diagram of the structure of the middle limit ring plate;

[0029] Fig.14 for Fig.10 Schematic diagram of the middle section structure of the middle adjustment casing;

[0030] Fig.15 for Fig.14 Front view of .

[0031] In the figure: 1, rotating connecting pipe; 2, positioning rotating sleeve; 3, first positioning plate; 4, middle positioning plate; 5, second positioning plate; 6, limiting plate; 7, limiting sleeve; 8, limiting sleeve; 9, first cutting die; 10, second cutting die; 11, middle sleeve; 12, linkage clamping shaft; 13, third positioning plate; 13a, arc portion; 13b, straight portion; 14, fourth positioning plate; 15, limiting ring plate; 151, first half ring; 152, second half ring; 16, adjusting sleeve; 17, middle sleeve; 18, adjusting screw shaft. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] Embodiment 1

[0034] See also Figure 1 , a stainless steel pipe outer surface corrugation forming equipment, including a rotating joint pipe 1, the rotating joint pipe 1 is fixedly sleeved on a bracket through a bearing, the bracket is installed on a machine tool, and one end of the rotating joint pipe 1 is connected to a motor arranged on the machine tool, the motor drives the rotating joint pipe 1 to rotate, the other end of the rotating joint pipe 1 is fixedly sleeved with a positioning sleeve 2, the inner side of the positioning sleeve 2 is movably sleeved with a limiting sleeve 7, the limiting sleeve 7 is made of brass material, when the stainless steel pipe passes through the limiting sleeve 7, it can effectively protect the outer side of the steel pipe, the positioning sleeve 2 is installed on the side away from the rotating joint pipe 1 with a cutter head assembly, the stainless steel pipe to be processed passes through the limiting sleeve 7 from one end of the rotating joint pipe 1, and the cutter head assembly processes the corrugation on the outer surface of the stainless steel pipe, the cutter head assembly includes a first positioning disk 3, please refer to Figure 2-Figure 3 The inner side of the first positioning plate 3 is fixedly sleeved with a limiting sleeve 8, which is tilted relative to the first positioning plate 3. The inner movable sleeve of the limiting sleeve 8 is sleeved with a first cutting die 9, which is located on one side of the limiting sleeve 7, and the first cutting die 9 is close to the side of the limiting sleeve 7 but not in contact with it. The inner side of the first cutting die 9 is provided with a corrugated groove for processing and forming corrugations on the outer surface of the stainless steel pipe, and the inner diameter of the first cutting die 9 on the side facing the limiting sleeve 7 is uniformly reduced from far to near the limiting sleeve 7. Please refer to Figure 4-Figure 5The limiting sleeve 8 is eccentrically arranged on the first positioning disk 3. When the positioning rotating sleeve 2 drives the first positioning disk 3 to rotate, the first positioning disk 3 drives the first cutting die 9 to rotate. When the stainless steel pipe to be processed abuts against the first cutting die 9, the first cutting die 9 is inclined so that the corrugated groove on the inner side of the first cutting die 9 cuts into the outer surface of the stainless steel pipe. The first cutting die 9 is eccentrically and movably sleeved relative to the first positioning disk 3. After the first cutting die 9 is subjected to the pressure of the steel pipe feed, the rolling friction when the first cutting die 9 rotates around the outer surface of the stainless steel pipe is greater than the friction force between the first cutting die 9 and the first positioning disk 3 through the bearing movable sleeve. The first cutting die 9 will rotate in the opposite direction relative to the first positioning disk 3, thereby utilizing the corrugated groove on the inner side of the first cutting die 9 to process the outer surface of the first positioning disk 3 into a corrugated shape.

[0035] Please continue to see 2- Figure 3 The first positioning disk 3 is provided with an intermediate positioning disk 4 on the side away from the positioning rotating sleeve 2, the intermediate positioning disk 4 is provided with a second positioning disk 5 on the side away from the first positioning disk 3, the second positioning disk 5 is provided with a limiting disk 6 on the side away from the intermediate positioning disk 4, and the limiting disk 6, the second positioning disk 5, the intermediate positioning disk 4 and the first positioning disk 3 are fixed to the positioning rotating sleeve 2 by bolts, wherein the first positioning disk 3, the intermediate positioning disk 4 and the second positioning disk 5 are fixed by bolts, and a limiting sleeve 8 is provided on the inner side of the second positioning disk 5, and the limiting sleeve 8 on the inner side of the second positioning disk 5 is connected to the first positioning disk 3. The inner limiting sleeve 8 is symmetrically arranged on both sides of the middle positioning plate 4. The limiting sleeve 8 in the second positioning plate 5 is eccentric in the opposite direction to the limiting sleeve 8 in the first positioning plate 3. A second cutting die 10 is arranged in the middle of the limiting sleeve 8 in the second positioning plate 5, and the pitch of the corrugated groove in the second cutting die 10 is the same as the pitch of the corrugated groove in the first cutting die 9. The sides of the first cutting die 9 and the second cutting die 10 are respectively fixedly sleeved with a linkage clamping shaft 12. The inner movable sleeve of the middle positioning plate 4 is provided with an intermediate sleeve 11. A through hole matching the outer diameter of the corrugated pipe is opened in the middle of the intermediate sleeve 11. Please refer to Figure 6-Figure 7The middle sleeve 11 is provided with a slide groove located outside the through hole. The number of the slide grooves is four, and the four slide grooves are distributed in a circular array outside the through hole. The four slide grooves are matched with the linkage clamping shaft 12, so that when the first cutting die 9 and the second cutting die 10 rotate, the middle sleeve 11 is driven to rotate together. The through hole in the middle of the middle sleeve 11 is used to limit the processed stainless steel to prevent the stainless steel from being severely bent due to stress, and it is also convenient for one end of the stainless steel pipe processed by the first cutting die 9 to move to the second cutting die 10, and the second cutting die 1 0 continues processing, therefore, the groove depth value of the corrugated groove in the second cutting die 10 can be set to be the same as the groove depth value of the corrugated groove in the first cutting die 9, so as to improve the quality of corrugated forming of the stainless steel pipe, and the groove depth value of the corrugated groove in the second cutting die 10 can also be set to a greater degree than the groove depth value of the first cutting die 9, so that the first cutting die 9 first performs preliminary processing on the outer surface of the stainless steel pipe, and then further processes it by the second cutting die 10, through the progressive processing method on both sides, so as to perform deeper corrugation processing and forming on the outer surface of the stainless steel corrugated pipe.

[0036] During processing, the stainless steel tube is inserted from the end of the rotating connecting tube 1 away from the positioning rotating sleeve 2, and one end of the stainless steel tube passes through the limiting sleeve 7. The motor installed on the machine tool drives the rotating connecting tube 1 to drive the positioning rotating sleeve 2, the first positioning plate 3, the intermediate positioning plate 4 and the second positioning plate 5 to rotate together, and continuously pushes the stainless steel tube until one end of the stainless steel tube contacts the first cutting die 9. When the stainless steel tube is fed, under the thrust of the first cutting die 9, the first cutting die 9 rotates eccentrically around the stainless steel tube with the first positioning plate 3, and the first cutting die 9 rotates in the opposite direction relative to the first positioning plate 3. The first cutting die 9 drives the intermediate sleeve 11 and the second cutting die 10 to rotate together. At this time, under the limitation of the limiting sleeve 7, the stainless steel tube is always in a state of only horizontal movement, and the first cutting die 9 and the second cutting die 10 rotate around the outer surface of the stainless steel tube, thereby processing the outer surface of the stainless steel tube into a corrugated shape.

[0037] Embodiment 2

[0038] See also Figure 8-Figure 11 , which is different from the first embodiment, the cutter head assembly is composed of a third positioning plate 13 and a fourth positioning plate 14, and the third positioning plate 13 is fixed to the fourth positioning plate 14 by bolts arranged on the upper and lower sides, see Fig.12, a concentric through groove is provided in the middle of the third positioning disk 13, and the concentric through groove is surrounded by an arc portion 13a and a straight portion 13b, and the arc portion 13a is located above the straight portion 13b, and a concentric through groove identical to the third positioning disk 13 is provided in the middle of the fourth positioning disk 14, and the arc portion 13a of the concentric through groove on the fourth positioning disk 14 is located below the straight portion 13b, please refer to the figure, the concentric grooves of the third positioning disk 13 and the fourth positioning disk 14 are movably sleeved with an adjusting sleeve 16, and the outer diameter values ​​on both sides of the adjusting sleeve 16 are smaller than the inner diameter value of the arc portion 13a, so that the adjusting sleeve 16 can be placed between the third positioning disk 13 and the fourth positioning disk 14, the first cutting die 9 and the second cutting die 10 is movably installed on both sides of the positioning sleeve 16 through bearings, and the first cutting die 9 and the second cutting die 10 are inclined relative to the positioning sleeve 16, and the upper and lower sides of the positioning sleeve 16 are respectively movably connected with the straight portions 13b of the concentric grooves of the third positioning plate 13 and the fourth positioning plate 14, so that the positioning sleeve 16 is limited by the straight portions 13b in the concentric grooves of the third positioning plate 13 and the fourth positioning plate 14, so that the positioning sleeve 16 can move laterally along the straight portions 13b, thereby controlling the eccentric position of the positioning sleeve 16 relative to the third positioning plate 13 and the fourth positioning plate 14, controlling the eccentric position of the first cutting die 9 and the second cutting die 10, and being able to put the positioning sleeve 16 into the concentric grooves.

[0039] A limiting ring plate 15 is provided on the outer edge between the third positioning plate 13 and the fourth positioning plate 14. Fig.13 The limiting ring plate 15 is composed of a first half ring 151 and a second half ring 152, and the bottom of the first half ring 151 is movably connected with the bolts fixed at the bottom between the third positioning plate 13 and the fourth positioning plate 14, and the top of the second half ring 152 is movably connected with the bolts fixed at the top between the third positioning plate 13 and the fourth positioning plate 14, so that the first half ring 151 and the second half ring 152 can be fixedly installed between the third positioning plate 13 and the fourth positioning plate 14, and the first half ring 151 and the second half ring 152 are respectively threadedly connected with the adjusting screw shaft 18 on both sides, please refer to Figure 14-15 , and one end of the two adjusting screw shafts 18 are respectively movably connected with the middle parts of both sides of the adjusting sleeve 16. By adjusting the adjusting screw shafts 18 on both sides of the adjusting sleeve 16, the eccentric position of the adjusting sleeve 16 at the third positioning plate 13 and the fourth positioning plate 14 is controlled to control the eccentric position of the first cutting die 9 and the second cutting die 10, so as to adjust the cutting depth of the inner corrugated grooves of the first cutting die 9 and the second cutting die 10 according to the size requirements of the stainless steel pipe, without replacing the whole set of cutter head components, which facilitates the subsequent replacement of cutting dies of different sizes.

[0040] Please continue reading Figure 10-11The middle movable sleeve of the positioning sleeve 16 is provided with a middle sleeve 17, and the middle sleeve 17 limits the stainless steel pipe passing through the first cutting die 9, and the middle sleeve 17 is made of brass material, which can effectively protect the outer side of the steel pipe.

Claims

1. A corrugated forming device for the outer surface of a stainless steel pipe, comprising a rotating connecting pipe (1), one end of the rotating connecting pipe (1) is fixedly sleeved with a positioning rotating sleeve (2), and one side of the positioning rotating sleeve (2) is fixedly mounted with a cutter head assembly, characterized in that: A first cutting die (9) is movably arranged on the inner side of the cutter head assembly, and the first cutting die (9) is inclined and eccentrically arranged on the cutter head assembly. A corrugated groove for processing and forming corrugations on the outer surface of the stainless steel pipe is arranged on the inner side of the first cutting die (9). The first cutting die (9) rotates in the opposite direction relative to the rotating connecting pipe (1) and the positioning rotating sleeve (2) under the thrust of the stainless steel pipe feeding, and the corrugated groove on the inner side of the first cutting die (9) performs corrugation processing on the outer surface of the stainless steel pipe. The cutter head assembly is further composed of a third positioning disk (13) and a fourth positioning disk (14); a positioning sleeve (16) is movably arranged in the middle between the third positioning disk (13) and the fourth positioning disk (14); a limiting ring plate (15) is arranged at the outer edge between the third positioning disk (13) and the fourth positioning disk (14); adjusting screw shafts (18) are respectively threadedly sleeved on both sides of the limiting ring plate (15); and one end of the two adjusting screw shafts (18) are respectively movably sleeved on both sides of the positioning sleeve (16); the two adjusting screw shafts (18) rotate relative to the limiting ring plate (15) to control the position of the positioning sleeve (16) to move laterally inside the third positioning disk (13) and the fourth positioning disk (14).

2. The stainless steel pipe outer surface corrugation forming equipment according to claim 1, characterized in that: The inner movable sleeve of the positioning rotating sleeve (2) is provided with a limiting sleeve (7), and the limiting sleeve (7) is made of brass material.

3. The stainless steel pipe outer surface corrugation forming equipment according to claim 2, characterized in that: The inner diameter of the first cutting die (9) on the side facing the limiting sleeve (7) decreases uniformly from far to near the limiting sleeve (7).

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