Steel pipe cutting device

Abstract

The invention discloses a steel pipe cutting device which comprises a supporting frame and a disc type cutting machine and further comprises a supporting assembly used for supporting a to-be-cut steel pipe. The first oval extrusion disc is rotationally arranged on the supporting assembly; the first driving assembly is arranged on the supporting frame; the first driving assembly drives the connecting piece to move; the second oval extrusion disc is rotationally arranged on the connecting piece; the flow guide assembly is arranged on the connecting piece, and the flow guide assembly is used for jetting airflow to the second oval extrusion disc; the cutting quality of the steel pipe can be guaranteed conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of trailer production, in particular to a steel pipe cutting device. Background Art

[0002] During the trailer manufacturing process, steel pipes need to be cut to meet the manufacturing requirements of components such as the frame; and in order to connect the steel pipes with other components, the cut surface of the steel pipes sometimes needs to be set at an angle; when cutting steel pipes, traditional steel pipe cutting devices usually only fix the outside of the steel pipes through a clamping structure. When cutting steel pipes, the cutting disc lacks support for the inside of the steel pipes, which can easily cause deformation at the cutting position of the steel pipes, making the cutting position of the steel pipes prone to dents, curling, and other phenomena. Summary of the Invention

[0003] The object of the present invention is to provide a steel pipe cutting device that can ensure cutting quality and help reduce deformation of the steel pipe cutting position.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a steel pipe cutting device, including a support frame and a disc cutting machine, and also including: a support assembly, the support assembly is used to support the steel pipe to be cut; an elliptical extrusion disc one, the elliptical extrusion disc one is rotatably set on the support assembly; a first drive assembly, the first drive assembly is set on the support frame; a connecting piece, the first drive assembly drives the connecting piece to move; an elliptical extrusion disc two, the elliptical extrusion disc two is rotatably set on the connecting piece; a guide assembly, the guide assembly is set on the connecting piece, and the guide assembly is used to spray air flow to the elliptical extrusion disc two; a second drive assembly, the second drive assembly is used to drive the disc cutting machine to move up and down; wherein, the elliptical extrusion disc one and the elliptical extrusion disc two are used to cooperate inside the steel pipe to be cut, when the steel pipe to be cut is cooperated with the elliptical extrusion disc one and the elliptical extrusion disc two, the steel pipe to be cut is tilted, and the cutting disc of the disc cutting machine corresponds to the area between the elliptical extrusion disc one and the elliptical extrusion disc two.

[0005] Furthermore, the support assembly includes: a support cylinder, which is arranged at an angle and is used to support one end of the steel pipe to be cut; a support seat, which is arranged on the support frame, and the support cylinder is arranged on the support seat; a first support column, which is arranged on the support seat, and the first support column is coaxial with the support cylinder; wherein, a first rotating shaft is fixedly arranged on the elliptical extrusion disk, the first rotating shaft passes through the first support column, and the first rotating shaft is rotatably arranged on the first support column; when the elliptical extrusion disk is matched with the steel pipe to be cut, the first support column is coaxial with the steel pipe to be cut.

[0006] Furthermore, the support assembly also includes: a first baffle, which is arranged on the support tube; wherein the first baffle is used to limit the elliptical extrusion disk.

[0007] Furthermore, the connecting member includes: a connecting seat, a first driving assembly is used to drive the connecting seat to move; a second support column, the second support column is arranged on the connecting seat; wherein, a second rotating shaft is fixedly connected to the elliptical extrusion disk 2, the second rotating shaft passes through the second support column, the second rotating shaft is rotatably arranged on the second support column, and the axis of the second support column deviates from the axis of the first support column.

[0008] Furthermore, the connecting part also includes: a connecting rod, which is arranged on the connecting seat; a second baffle, which is arranged at one end of the connecting rod away from the connecting seat; a piston ring, which is fixed on the support seat and is adapted to the steel pipe to be cut; wherein, when the elliptical extrusion disk 1 and the elliptical extrusion disk 2 are matched with the inside of the steel pipe to be cut, the part of the non-adjacent ends of the elliptical extrusion disk 2 and the elliptical extrusion disk 1 located above the second support column contacts the second baffle.

[0009] Furthermore, a first groove is provided on the elliptical extrusion disk 1, and a plurality of first guide holes are also provided on the elliptical extrusion disk 1, and the first guide holes are connected to the first groove.

[0010] Furthermore, a second groove is provided on the elliptical extrusion disk 2. When the elliptical extrusion disk 1 and the elliptical extrusion disk 2 are matched with the steel pipe to be cut, the second groove corresponds to the first groove; a plurality of second guide holes are also provided on the elliptical extrusion disk 2, and the second guide holes are connected to the second groove.

[0011] Furthermore, the flow guide component includes: a flow guide pipe, which is installed on the support seat; wherein the flow guide pipe is used to connect to an external pressure air source, and the flow guide pipe is used to spray air flow into the second groove.

[0012] Furthermore, the first driving assembly includes: a first hydraulic cylinder, the first hydraulic cylinder is arranged on the support frame, and the piston rod of the first hydraulic cylinder is fixedly connected to the connecting seat; wherein, the first hydraulic cylinder is used to drive the connecting seat to move along the axis direction of the first support column.

[0013] Furthermore, the second driving assembly includes: a moving seat, which is movably arranged on the support frame and fixedly connected to the disc cutting machine; a second hydraulic cylinder, which is arranged on the support frame and the piston rod of the second hydraulic cylinder is fixedly connected to the moving seat.

[0014] Compared with the prior art, the present invention has the following beneficial effects.

[0015] 1. The present invention relates to metal cutting equipment, which is provided with an elliptical extrusion disk 1 and an elliptical extrusion disk 2 adapted to the steel pipe to be cut. During the steel pipe cutting process, the elliptical extrusion disk 1 and the elliptical extrusion disk 2 exert an extrusion effect on the inner wall of the steel pipe, which helps to reduce the phenomenon of dents, curling, etc. caused by deformation of the steel pipe at the cutting position during the cutting process.

[0016] 2. The present invention can drive a portion of the heat on the cutting disk of the disc cutter by introducing airflow, which is convenient for lowering the cutting disk temperature of the disc cutter, can reduce the deformation of the cutting disk of the cutter caused by overheating, and help to ensure the cutting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the cooperation between the disc cutting machine and the second driving assembly of the present invention.

[0020] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the present invention.

[0021] Figure 4 This invention Figure 3 Schematic diagram of the enlarged structure of area A in the middle.

[0022] Figure 5 It is a schematic diagram of the installation of the bearing seat of the present invention.

[0023] Figure 6 It is a schematic diagram of the cooperation between the support assembly and the elliptical extrusion disk of the present invention.

[0024] Figure 7 This is a schematic diagram of the installation of the first rotating shaft of the present invention.

[0025] Figure 8 It is a schematic diagram of the cooperation between the elliptical extrusion disk and the second support column of the present invention.

[0026] Figure 9 It is a schematic diagram of the coordination of the flow guide tube, the connector and the elliptical extrusion disk of the present invention.

[0027] Figure 10 It is a schematic diagram of the installation of the guide rod and guide sleeve of the present invention.

[0028] In the figure: 1. support frame; 11. first drive assembly; 111. first hydraulic cylinder; 12. second drive assembly; 121. movable seat; 122. second hydraulic cylinder; 123. linear slide; 124 slider; 13. bearing seat; 2. disc cutting machine; 3. guide assembly; 31. guide pipe; 4. support assembly; 41. support seat; 42. first support column; 43. support cylinder; 44. first baffle; 5. connecting member; 51. connecting seat; 52. second support column; 53. tension spring; 54. connecting rod; 55. second baffle; 56. piston ring; 6. elliptical extrusion disk 1; 61. first rotating shaft; 62. first groove; 63. first guide hole; 7. elliptical extrusion disk 2; 71. second rotating shaft; 72. second groove; 73. second guide hole; 8. guide rod; 81. guide sleeve. DETAILED DESCRIPTION

[0029] 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.

[0030] Example 1

[0031] See also Figures 1-9 The present invention provides a technical solution: a steel pipe cutting device, comprising a support frame 1 and a disc cutter 2, a second drive assembly 12 being provided on the support frame 1, and the second drive assembly 12 being used to drive the disc cutter 2 to move up and down; the second drive assembly 12 comprises a moving seat 121 movably provided on the support frame 1, and the moving seat 121 can move up and down; the second drive assembly 12 also comprises a second hydraulic cylinder 122, the second hydraulic cylinder 122 is vertically installed on the support frame 1, the second hydraulic cylinder 122 is vertically provided, and the piston rod of the second hydraulic cylinder 122 fixes the moving seat 121, and the moving seat 121 is driven up and down by the second hydraulic cylinder 122, thereby driving the disc cutter 2 to move up and down.

[0032] A support assembly 4 is provided on the support frame 1, and the support assembly 4 is used to support the steel pipe to be cut (hereinafter referred to as the steel pipe); an elliptical extrusion disk 6 is movably provided on the support assembly 4, and a first rotating shaft 61 is fixedly connected to the elliptical extrusion disk 6, and the first rotating shaft 61 is rotatably provided on the support assembly 4; the elliptical extrusion disk 6 is adapted to the inside of the steel pipe, and when the elliptical extrusion disk 6 is matched with the steel pipe, the steel pipe is inclined, and at this time the support assembly 4 supports the end of the steel pipe.

[0033] The support assembly 4 includes a support seat 41, which is arranged on the support frame 1; a support tube 43 is arranged on the support seat 41, and the support tube 43 is arranged at an angle, and the support tube 43 is used to support the steel pipe; a first support column 42 is fixedly connected to the support seat 41, and the first support column 42 is coaxial with the support tube 43, and when the elliptical extrusion disk 6 is matched with the steel pipe to be cut, the first support column 42 is also coaxial with the steel pipe; the first rotating shaft 61 penetrates the first support column 42, and the first rotating shaft 61 is rotatably arranged on the first support column 42 through a sealed bearing, etc., the axis of the first rotating shaft 61 is perpendicular to and intersects with the axis of the first support column 42, and the first support column 42 also passes through the support tube 43.

[0034] When the shape of the end of the steel pipe in contact with the support tube 43 is irregular, the end of the support tube 43 used to support the steel pipe is set to a structure that is compatible with the end of the steel pipe, so that the support tube 43 can support the steel pipe. This is existing technology and will not be repeated here.

[0035] The support assembly 4 further includes a first stop bar 44, which is disposed on the support tube 43; Figure 4 As shown, after the elliptical extrusion plate 1 6 and the elliptical extrusion plate 2 7 are matched with the steel pipe, one of the non-adjacent ends of the elliptical extrusion plate 1 6 and the elliptical extrusion plate 2 7 located below the first support column 42 contacts the first stop bar 44, that is, Figure 4 As shown, when the steel pipe is not fitted onto the outside of the elliptical extrusion disk 6, the elliptical extrusion disk 6 can only rotate counterclockwise.

[0036] The support frame 1 is provided with a first driving assembly 11, which is connected to the connecting member 5 and is used to drive the connecting member 5 to move; a second rotating shaft 71 is rotatably provided on the connecting member 5, and the second rotating shaft 71 is fixedly connected to the elliptical extrusion disk 2 7, which is also used to adapt to the inside of the steel pipe; the first driving assembly 11 drives the connecting member 5 to move, which can drive the elliptical extrusion disk 2 7 to fit inside the steel pipe; Figure 4 As shown, the elliptical extrusion disc 1 6 and the elliptical extrusion disc 2 7 are used to cooperate with the part of the steel pipe near the cutting position, and the cutting disc of the disc cutting machine 2 corresponds to the area between the elliptical extrusion disc 1 6 and the elliptical extrusion disc 2 7.

[0037] The first driving assembly 11 includes a first hydraulic cylinder 111, which is installed on the support frame 1. The first hydraulic cylinder 111 is tilted, and the tilt angle of the piston rod of the first hydraulic cylinder 111 is consistent with the tilt angle of the first support column 42, that is, the first hydraulic cylinder 111 is used to drive the connecting member 5 to move along the axial direction of the first support column 42.

[0038] The connecting member 5 includes a connecting seat 51, the piston rod of the first hydraulic cylinder 111 is fixedly connected to the connecting seat 51, and the first hydraulic cylinder 111 can drive the connecting seat 51 to move along the axis of the first support column 42; a second support column 52 is provided on the connecting seat 51, and the axis of the second support column 52 is parallel to the axis of the first support column 42; a second rotating shaft 71 penetrates the second support column 52, and the second rotating shaft 71 can be rotatably set on the second support column 52 by a sealed bearing, etc., and the axis of the second rotating shaft 71 is perpendicular to and intersects with the axis of the second support column 52; Figure 4 As shown, when the elliptical extrusion disk 1 6 and the elliptical extrusion disk 2 7 are matched with the steel pipe, the axis of the second support column 52 deviates from the axis of the first support column 42, and the axis of the second support column 52 is located below the axis of the first support column.

[0039] At the same time, the connecting member 5 further includes a connecting rod 54 and a tension spring 53. The connecting rod 54 is fixed on the connecting seat 51. A second stop bar 55 is provided at one end of the connecting rod 54 away from the connecting seat 51. Figure 4 As shown, when the elliptical extrusion disk 1 6 and the elliptical extrusion disk 2 7 are matched with the steel pipe, a portion of the elliptical extrusion disk 2 7 and the non-adjacent end of the elliptical extrusion disk 1 6 is located above the second support column 52 and contacts the second stop bar 55; a tension spring 53 is provided between the elliptical extrusion disk 2 7 and the second support column 52, and the two ends of the tension spring 53 are fixedly connected to the second support column 52 and the elliptical extrusion disk 2 7 respectively. The tension spring 53 is used to pull the elliptical extrusion disk 2 7 to contact the second stop bar 55; as shown Figure 4 As shown, due to the blocking effect of the second blocking bar 55, when the steel pipe is not sleeved on the outside of the elliptical extrusion disk 2 7, the elliptical extrusion disk 2 7 can only rotate counterclockwise.

[0040] A first groove 62 is provided on the elliptical extrusion disk 1 6, and a plurality of first guide holes 63 are also provided on the elliptical extrusion disk 1 6, and the first guide holes 63 are connected to the first groove 62; a second groove 72 is provided on the elliptical extrusion disk 2 7, and when the elliptical extrusion disk 1 6 and the elliptical extrusion disk 2 7 are matched with the steel pipe, the second groove 72 corresponds to the first groove 62; a plurality of second guide holes 73 are also provided on the elliptical extrusion disk 2 7, and the second guide holes 73 are connected to the second groove 72; the first groove 62 and the second groove 72 are both truncated cone hole structures.

[0041] like Figure 4As shown, a guide assembly 3 is provided on the connecting seat 51, and the guide assembly 3 is used to spray airflow toward the elliptical extrusion disk 2 7; the guide assembly 3 includes a guide pipe 31, the guide pipe 31 passes through the connecting seat 51, and the guide pipe 31 is fixedly connected to the connecting seat 51; the guide pipe 31 is connected to the external pressure air source through a hose, and is used to spray airflow toward the second groove 72; at the same time, a piston ring 56 is provided on the external fixed sleeve of a part of the connecting seat 51, and the piston ring 56 is made of elastic material, such as rubber or silicone; the piston ring 56 is used to cooperate with the steel pipe, and the piston ring 56 and the connecting seat 51 are used to block the upper end of the steel pipe; when the elliptical extrusion disk 2 7 does not cooperate with the steel pipe, that is, the steel pipe does not cooperate with the outside of the elliptical extrusion disk 2 7, the guide pipe 31 sprays pressurized airflow toward the second groove 72, and the airflow will simultaneously impact the elliptical extrusion disk 2 7, which can cause the elliptical extrusion disk 2 7 to rotate and drive the tension spring 53 to stretch.

[0042] The elliptical extrusion disk 1 6 and the elliptical extrusion disk 2 7 can be made of a deformable and high-strength material, such as shape memory alloy or composite material, etc. The ends of the elliptical extrusion disk 1 6 and the elliptical extrusion disk 2 7 are chamfered; the part of the elliptical extrusion disk 1 6 connected to the first rotating shaft 61 and the part of the elliptical extrusion disk 2 7 connected to the second rotating shaft 71 are both provided with grooves to reduce the weight of the elliptical extrusion disk 1 6 and the elliptical extrusion disk 2 7.

[0043] A bearing seat 13 is also provided on the support frame. The bearing seat 13 is used to support the outer wall of the steel pipe. The bearing seat 13 is adapted to the steel pipe, and the position of the bearing seat 13 deviates from the disc cutter 2; and the bearing seat 13 can be provided with a tooth groove structure with the steel pipe structure part.

[0044] In this embodiment, the steel pipe is first fitted on the outside of the elliptical extrusion disk 1 6, the lower end of the steel pipe is supported by the support tube 43, and a part of the outer wall of the upper part of the steel pipe is supported by the bearing 13; then, the piston rod of the first hydraulic cylinder 111 is extended and drives the connecting seat 51 to move slowly along the axis direction of the first support column 42, so that the elliptical extrusion disk 2 7 is fitted inside the steel pipe; during the movement of the elliptical extrusion disk 2 7, the elliptical extrusion disk 2 7 contacts the second baffle 55 due to the action of the tension spring 53, and the end of the elliptical extrusion disk 2 7 is chamfered, so that it is convenient for the elliptical extrusion disk 2 7 to fit with the inner annular surface of the steel pipe; the first hydraulic cylinder 111 drives the connecting seat 51 to move, so that the elliptical extrusion disk 2 7 moves to the position adjacent to the steel pipe to be cut, that is, Figure 4 As shown, the elliptical extrusion disc 1 6 is also adjacent to the position where the steel pipe is to be cut, the cutting disc of the disc cutter 2 corresponds to the area between the elliptical extrusion disc 1 6 and the elliptical extrusion disc 2 7, and the piston ring 56 also cooperates with the steel pipe.

[0045] At the same time, the external pressure air source introduces the pressure air flow into the guide tube 31, and the guide tube 31 sprays the pressure air flow toward the second groove 72. The air flow has an impact effect on the elliptical extrusion disk 2 7. Since the elliptical extrusion disk 2 7 is fixedly connected to the second rotating shaft 71, the elliptical extrusion disk 2 7 always has a tendency to rotate; the air flow can flow into the position between the elliptical extrusion disk 1 6 and the elliptical extrusion disk through the second guide hole 73, and the air flow flowing out through the first guide hole 63 directly impacts the first groove 62, thereby directly impacting the elliptical extrusion disk, and since the first guide hole 63 is provided, the air flow between the elliptical extrusion disk 1 6 and the elliptical extrusion disk 2 7 will flow to the first guide hole 63, which also facilitates the elliptical extrusion disk 2 7 to have a tendency to rotate, as shown in FIG. Figure 4 As shown, due to the limiting effect of the first baffle 44 and the second baffle 55, the elliptical extrusion disk 1 6 and the elliptical extrusion disk 2 7 have a tendency to rotate counterclockwise, and both the elliptical extrusion disk 1 6 and the elliptical extrusion disk 2 7 have an extrusion effect on the inside of the steel pipe.

[0046] Then, the disc cutter 2 is driven down by the second hydraulic cylinder 122, and the cutting disc of the disc cutter 2 can cut the steel pipe; the initial position of the disc cutter 2 is at a suitable position above the steel pipe, and the second hydraulic cylinder 122 can quickly drive the disc cutter 2 to cut the steel pipe, so the air pressure in the area between the elliptical extrusion disc 1 6 and the elliptical extrusion disc 2 7, and the air pressure in the area between the elliptical extrusion disc 2 7 and the piston ring 56 will not be too large (because after the steel pipe is cut, the air flow can be discharged from the cut position); during the cutting process, when the disc cutter 2 just starts to cut the outer wall of the steel pipe, the pressurized air flow is sprayed through the guide pipe 31, which causes the elliptical extrusion disc 1 6 and the elliptical extrusion disc 2 7 to have a tendency, and has an extrusion effect on the part of the steel pipe adjacent to the cutting position; when the steel pipe is cut to have an opening, a part of the air flow can flow in from the opening, and the air flow discharged from the second guide hole 73 can still impact the elliptical extrusion disc 1 6.

[0047] When the cutting disc of the disc cutter 2 continues to extend into the steel pipe and the second guide hole 73 is blocked by the cutting disc of the disc cutter 2, although the airflow discharged from the second guide hole 73 is blocked from directly impacting the elliptical extrusion disc 6, and because the gap between the cutting disc of the disc cutter 2 and the cutting opening is large, a small part of the airflow discharged from the second guide hole 73 can be discharged through the cutting opening, and most of the airflow bypasses the cutting disc of the disc cutter 2 and flows into the first groove 62 and the first guide hole 63, which can also have a certain impact on the elliptical extrusion disc 6. Therefore, the elliptical extrusion disc 6 still maintains the rotation drive and produces an extrusion effect on the inner wall of the steel pipe; in addition, when the steel pipe is bent and cut off, the introduction of pressurized airflow into the guide pipe 31 can be immediately stopped; the cutting disc of the disc cutter 2 adopts a suitable thickness and is firmly installed on the housing of the disc cutter 2 by a suitable method or structure. When the cutting disc of the disc cutter 2 blocks the airflow, the impact of the airflow on the cutting of the cutting disc of the disc cutter 2 after the airflow impacts the cutting disc of the disc cutter 2 can be basically ignored.

[0048] During the cutting process, the elliptical extrusion disk 1 6 and the elliptical extrusion disk 2 7 exert an extrusion effect on the inner wall of the steel pipe, thereby improving the support effect on the inner wall of the steel pipe, and the elliptical extrusion disk 1 6 and the elliptical extrusion disk 2 7 are close to the cutting position, which helps to reduce the dents, curling and other phenomena caused by the deformation of the steel pipe at the cutting position during the cutting process; at the same time, the airflow discharged through the second guide hole 73 can drive part of the heat on the cutting disk of the disc cutter 2, which is convenient for reducing the temperature of the cutting disk of the disc cutter 2, and a pressure cold flow can be introduced into the guide pipe 31 to improve the cooling effect of the cutting disk of the disc cutter 2. Since the cutting disk of the disc cutter 2 will reduce the cutting quality when it is overheated and deformed, it helps to ensure the cutting quality.

[0049] When the steel pipe cutting is completed, the second hydraulic cylinder 122 drives the disc cutter 2 to reset, the first hydraulic cylinder 111 drives the connection to move, and drives the elliptical extrusion disc 2 7 to completely separate from the steel pipe, and the cut steel pipe can be taken out; since the steel pipe is set tilted, the cutting surface of the steel pipe can be tilted; the apertures of the first guide hole 63 and the second guide hole 73 should not be too small. After the cutting is completed and the steel pipe is removed, the chips can be blown through an external air gun, etc., and the debris on the elliptical extrusion disc 1 6, the elliptical extrusion disc 2 7, the support assembly 4, etc. can be cleaned in time for subsequent use.

[0050] Example 2

[0051] See also Figures 1-10 In this embodiment, based on the embodiment, two guide sleeves 81 are fixedly provided on the support frame 1. The two guide sleeves 81 are arranged in parallel, and the axes of the two guide sleeves 81 are parallel to the axis of the first support column 42; the two guide sleeves 81 both penetrate the support frame 1, and the two guide sleeves 81 are both fixedly connected to the support frame 1.

[0052] At the same time, two guide rods 8 are fixedly installed on the connecting seat 51. The two guide rods 8 are arranged in parallel, and the axes of the guide rods 8 are parallel to the axis of the first support column 42; the two guide rods 8 pass through the two guide sleeves 81 respectively, and the guide rods 8 are adapted to the guide sleeves 81.

[0053] In this embodiment, by cooperating with the guide sleeve 81 of the guide rod 8, when the first hydraulic cylinder 111 drives the connecting seat 51 to move, the stability of the movement of the moving seat 121 can be improved, thereby improving the stability of the movement of the elliptical extrusion disk 2 7 and the like.

[0054] Example 3

[0055] Please refer again Figure 1 This embodiment is based on the second embodiment, and two linear slide rails 123 are fixedly provided on the support frame 1, and the two linear slide rails 123 are vertically arranged; each linear slide rail 123 is provided with a slider 124, and all sliders 124 are fixedly connected to the moving seat 121.

[0056] By cooperating with the slider 124 and the linear slide rail 123 , the movable seat 121 can be movably set on the support frame 1 , and the stability of the movable seat 121 moving up and down can be improved, thereby improving the stability of the disc cutter 2 moving up and down.

[0057] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A steel pipe cutting device, comprising a support frame (1) and a disc cutter (2), characterized in that: Also includes: A support assembly (4), the support assembly (4) is used to support the steel pipe to be cut; An elliptical extrusion disc (6) is rotatably mounted on the support assembly (4); A first drive assembly (11), the first drive assembly (11) being arranged on the support frame (1); Connecting member (5), a first driving assembly (11) drives the connecting member (5) to move; The second elliptical extrusion disc (7) is rotatably mounted on the connecting member (5); A flow guide assembly (3), the flow guide assembly (3) is arranged on the connecting member (5), and the flow guide assembly (3) is used to spray air flow toward the elliptical extrusion disk (7); A second drive assembly (12), the second drive assembly (12) is used to drive the disc cutter (2) to move up and down; Among them, the elliptical extrusion disc 1 (6) and the elliptical extrusion disc 2 (7) are used to cooperate with the inside of the steel pipe to be cut. When the steel pipe to be cut is cooperated with the elliptical extrusion disc 1 (6) and the elliptical extrusion disc 2 (7), the steel pipe to be cut is set at an angle, and the cutting disc of the disc cutting machine (2) corresponds to the area between the elliptical extrusion disc 1 (6) and the elliptical extrusion disc 2 (7).

2. A steel pipe cutting device according to claim 1, characterized in that: The support assembly (4) comprises: A support cylinder (43), the support cylinder (43) is tilted and used to support one end of the steel pipe to be cut; A support seat (41), the support seat (41) is arranged on the support frame (1), and the support cylinder (43) is arranged on the support seat (41); A first support column (42), the first support column (42) is arranged on the support seat (41), and the first support column (42) and the support cylinder (43) are coaxial; Wherein, a first rotating shaft (61) is fixedly provided on the elliptical extrusion disk (6), the first rotating shaft (61) passes through the first supporting column (42), and the first rotating shaft (61) is rotatably provided on the first supporting column (42); when the elliptical extrusion disk (6) is matched with the steel pipe to be cut, the first supporting column (42) and the steel pipe to be cut are coaxial.

3. A steel pipe cutting device according to claim 2, characterized in that: The support assembly (4) further comprises: A first stop bar (44), the first stop bar (44) is arranged on the support tube (43); Wherein, the first stop bar (44) is used to limit the elliptical extrusion disk (6).

4. The steel pipe cutting device according to claim 2, characterized in that: The connecting piece (5) comprises: The connecting seat (51) is used for driving the connecting seat (51) to move. A second support column (52), the second support column (52) is arranged on the connecting seat (51); The second elliptical extrusion disc (7) is fixedly connected to a second rotating shaft (71), the second rotating shaft (71) passes through the second supporting column (52), the second rotating shaft (71) is rotatably arranged on the second supporting column (52), and the axis of the second supporting column (52) deviates from the axis of the first supporting column (42).

5. The steel pipe cutting device according to claim 4, characterized in that: The connecting piece (5) further comprises: A connecting rod (54), the connecting rod (54) is arranged on the connecting seat (51); A second stop bar (55), the second stop bar (55) is arranged at one end of the connecting rod (54) away from the connecting seat (51); A piston ring (56), the piston ring (56) is fixed on the support seat (41), and the piston ring (56) is adapted to the steel pipe to be cut; When the elliptical extrusion disc 1 (6) and the elliptical extrusion disc 2 (7) are matched with the inside of the steel pipe to be cut, the non-adjacent ends of the elliptical extrusion disc 2 (7) and the elliptical extrusion disc 1 (6) located above the second support column (52) are in contact with the second stop bar (55).

6. The steel pipe cutting device according to claim 5, characterized in that: The elliptical extrusion disk (6) is provided with a first groove (62), and the elliptical extrusion disk (6) is also provided with a plurality of first guide holes (63), and the first guide holes (63) are connected to the first groove (62).

7. The steel pipe cutting device according to claim 6, characterized in that: A second groove (72) is provided on the elliptical extrusion disc 2 (7). When the elliptical extrusion disc 1 (6) and the elliptical extrusion disc 2 (7) are matched with the steel pipe to be cut, the second groove (72) corresponds to the first groove (62). A plurality of second guide holes (73) are also provided on the second elliptical extrusion disk (7), and the second guide holes (73) are connected to the second groove (72).

8. The steel pipe cutting device according to claim 6, characterized in that: The flow guide assembly (3) comprises: A flow guide pipe (31), the flow guide pipe (31) is passed through the support seat (41); The flow guide tube (31) is used to connect to an external pressure gas source, and the flow guide tube (31) is used to spray air flow toward the second groove (72).

9. The steel pipe cutting device according to claim 4, characterized in that: The first drive assembly (11) comprises: A first hydraulic cylinder (111), the first hydraulic cylinder (111) is arranged on the support frame (1), and the piston rod of the first hydraulic cylinder (111) is fixedly connected to the connecting seat (51); The first hydraulic cylinder (111) is used to drive the connecting seat (51) to move along the axis direction of the first support column (42).

10. The steel pipe cutting device according to claim 1, characterized in that: The second drive assembly (12) comprises: A movable seat (121), the movable seat (121) is movably arranged on the support frame (1), and the movable seat (121) is fixedly connected to the disc cutting machine (2); A second hydraulic cylinder (122) is provided on the support frame (1), and a piston rod of the second hydraulic cylinder (122) is fixedly connected to the movable seat (121).

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