A high-precision pipe cutting device

Abstract

The application relates to the field of pipe machining, in particular to a high-precision pipe cutting device. The high-precision pipe cutting device comprises a base, a supporting plate fixedly connected to the base, a moving groove formed in the base, a servo motor fixedly connected to the supporting plate, an inner supporting mechanism arranged on the base, and a pipe placed on the inner supporting mechanism. The moving plate continues to drive the power motor and the cutting wheel to retract, the cutting wheel cuts into the inner side of the pipe, then the six inner supporting seats and the inner supporting blocks are used to first tightly support the inside of the pipe so that the pipe is stably cut, then the pipe is driven to rotate forward, and then the cutting wheel is used to stably cut the pipe in a ring shape.

Description

Technical Field

[0001] This invention relates to the field of pipe fitting processing, and more particularly to a high-precision pipe fitting cutting device. Background Technology

[0002] Pipe fittings are essential in daily life, but they need to be cut to the required length before use.

[0003] Existing pipe cutting equipment typically clamps the pipe from the inside out before cutting it with a cutting wheel. However, this method of clamping from the inside out results in insufficient support on the outside of the pipe and inadequate clamping. This can cause slight vibrations in the pipe during the cutting process, leading to minor movement and uneven cut surfaces. Consequently, the cutting quality is poor. Furthermore, the cutting force and friction of the cutting wheel can cause deformation or warping in the cut area, resulting in a rough cut. Summary of the Invention

[0004] To overcome the shortcomings of existing pipe cutting equipment, which often results in insufficient clamping of pipes, leading to uneven cutting surfaces, deformation, or warping of the cutting area and poor flatness of the cut, this invention provides a high-precision pipe cutting device that can clamp both the inner and outer sides of the pipe, resulting in more thorough clamping, thus improving the cutting quality of the pipe and the flatness of the cut.

[0005] The technical implementation of the present invention is as follows: a high-precision pipe cutting device includes a base, a support plate fixedly connected to the base, a moving groove opened on the base, a servo motor fixedly connected to the support plate, an inner support mechanism provided on the base, a pipe placed on the inner support mechanism, the inner support mechanism being used to expand the inside of the pipe, and a cutting mechanism provided on the base for cutting the pipe.

[0006] More preferably, the inner support mechanism includes a power shaft, which is fixedly connected to the output shaft of the servo motor. The power shaft passes through the base and a limiting groove ring is fixedly connected to the power shaft. The limiting groove ring has a curved groove on its surface. Two sets of fixed support discs are fixedly connected to the power shaft. Each set of fixed support discs consists of two discs, and each fixed support disc has three sliding grooves. A rotating ring is provided between the two fixed support discs in each set. The two rotating rings are rotatably connected to the power shaft. Each rotating ring has six grooves, and three inner support seats are slidably connected to each rotating ring. The three sliding grooves on the two fixed support discs in each set are slidably connected to the two sides of the three inner support seats. Each inner support seat has a groove, and an inner support block is installed on the groove of each inner support seat.

[0007] More preferably, each of the inner support blocks is made of rubber.

[0008] More preferably, the cutting mechanism includes an electric push rod, which is fixedly connected to the base. A movable plate is fixedly connected to the telescopic rod of the electric push rod. The movable plate is slidably connected to the movable groove of the base. A power motor is fixedly connected to the movable plate. A cutting wheel is fixedly connected to the output shaft of the power motor. The cutting wheel is used to cut the pipe fitting.

[0009] More preferably, it also includes an external clamping mechanism, which is disposed on the base and is used to clamp the surface of the pipe fitting. The external clamping mechanism includes a fixing plate, and two fixing plates are fixedly connected to the base. The two fixing plates are symmetrically arranged, and two fixing rings are fixedly connected between the two fixing plates. Each fixing ring has an annular groove, and three sliding seats are slidably connected to the annular groove of each fixing ring. An external clamping seat is slidably connected to each sliding seat, and a return spring is connected between each sliding seat and each external clamping seat. An external clamping block is fixedly connected to the side of each external clamping seat away from each return spring. Moving rods are slidably connected to both fixing plates, and a fixed round rod is fixedly connected to the upper moving rod. The bottom of the fixed round rod is slidably connected to the curved groove of the limiting groove ring. Two fixed inclined rings are fixedly connected between the two moving rods, and the two fixed inclined rings are in contact with the six external clamping seats.

[0010] More preferably, each of the outer clamps is made of rubber.

[0011] More preferably, one side of both of the fixed inclined rings is an inclined surface.

[0012] More preferably, it also includes a clamping mechanism, which is disposed on the two moving rods. The clamping mechanism is used to clamp the cut part of the pipe fitting. The clamping mechanism includes a fixed inclined block, and a fixed inclined block is fixedly connected to each of the two moving rods. A lifting rod is slidably connected to each of the two fixed plates. A tension spring is connected between each lifting rod and each fixed plate. A pressing round rod is fixedly connected to each lifting rod. The pressing round rod is in contact with the fixed inclined block. A clamping ring is fixedly connected to the end of each lifting rod away from the tension spring. The two clamping rings are used to clamp the pipe fitting.

[0013] More preferably, the two clamping rings are located between the six outer clamps.

[0014] More preferably, both clamping rings have slits on the side near the cutting wheel.

[0015] Compared with the prior art, the present invention has the following advantages: 1. Through the six inner support seats and inner support blocks, the pipe is also driven to rotate forward. At the same time, the telescopic rod of the electric push rod retracts, driving the moving plate to retract along the moving groove of the base. The retraction of the moving plate also drives the power motor and the cutting wheel to retract. The cutting wheel contacts the outer side of the pipe and cuts the pipe. The moving plate continues to drive the power motor and the cutting wheel to retract. The cutting wheel cuts into the inner side of the pipe. Then, through the six inner support seats and inner support blocks, the inside of the pipe is first tightened so that the pipe can be cut stably. Then, the pipe is driven to rotate forward. Then, through the cutting wheel, the pipe can be stably cut in a ring. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the first three-dimensional structure in an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the second three-dimensional structure in an embodiment of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the base, support plate, servo motor, fixing plate, and tubing in an embodiment of the present invention.

[0019] Figure 4 This is a partial three-dimensional structural diagram of the internal support mechanism in an embodiment of the present invention.

[0020] Figure 5 This is a partial three-dimensional structural diagram of the internal support mechanism and the cutting mechanism in an embodiment of the present invention.

[0021] Figure 6 This is a schematic diagram of the disassembled three-dimensional structure of the internal support mechanism in an embodiment of the present invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the outer clamping mechanism and the pressing mechanism in an embodiment of the present invention.

[0023] Figure 8 This is a partial three-dimensional structural diagram of the external clamping mechanism in an embodiment of the present invention.

[0024] Figure 9 This is a three-dimensional structural diagram of the fixing ring, sliding seat, and outer clamp in an embodiment of the present invention.

[0025] Figure 10 This is a three-dimensional structural diagram of the fixed ring, sliding seat, outer clamping seat, reset spring, and outer clamping block in an embodiment of the present invention.

[0026] Figure 11 For practical purposes Figure 8 A magnified three-dimensional structural diagram of A in the middle.

[0027] The components in the attached diagram are labeled as follows: 1. Base, 2. Support plate, 3. Servo motor, 41. Power shaft, 42. Limiting groove ring, 43. Rotating ring body, 44. Fixed support plate, 45. Inner support seat, 46. Inner support block, 5. Pipe fitting, 61. Electric push rod, 62. Moving plate, 63. Power motor, 64. Cutting wheel, 71. Fixed plate, 72. Fixed ring, 73. Sliding seat, 74. Outer clamp seat, 75. Return spring, 76. Outer clamp block, 77. Moving rod, 78. Fixed round rod, 79. Fixed inclined ring, 81. Fixed inclined block, 82. Lifting rod, 83. Extrusion round rod, 84. Tension spring, 85. Pressure ring. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1: A high-precision pipe cutting device, such as Figure 1 - Figure 7 As shown, it includes a base 1, a support plate 2 welded on the base 1, a moving groove on the base 1, a servo motor 3 fixedly connected to the support plate 2, an inner support mechanism on the base 1, a pipe 5 placed on the inner support mechanism, the inner support mechanism is used to open the inside of the pipe 5, and a cutting mechanism on the base 1 is used to cut the pipe 5.

[0030] The internal support mechanism includes a power shaft 41, which is fixedly connected to the output shaft of the servo motor 3. The power shaft 41 passes through the base 1. A limiting groove ring 42 is welded onto the power shaft 41. The limiting groove ring 42 has a curved groove on its surface and is used to limit the position of the pipe fitting 5. Two sets of fixed support discs 44 are welded onto the power shaft 41. Each set of fixed support discs 44 consists of two discs. Each fixed support disc 44 has three sliding grooves. A rotating ring 43 is provided between the two fixed support discs 44 in each set. The rotating ring 43 is rotatably connected to the power shaft 41. Each rotating ring 43 has six grooves and three inner support seats 45 are slidably connected to each rotating ring 43. The three sliding grooves on the two fixed support plates 44 of each group are slidably connected to the two sides of the three inner support seats 45 respectively. Each inner support seat 45 has a groove. The inner support seats 45 and the inner support blocks 46 are used to tighten the inner side of the pipe fitting 5. Each inner support seat 45 has an inner support block 46 installed in its groove. Each inner support block 46 is made of rubber.

[0031] The cutting mechanism includes an electric push rod 61, which is fixedly connected to the base 1. A movable plate 62 is welded to the telescopic rod of the electric push rod 61. The movable plate 62 is slidably connected to the movable groove of the base 1. A power motor 63 is fixedly connected to the movable plate 62. The movable plate 62 is used to support the power motor 63. A cutting wheel 64 is fixedly connected to the output shaft of the power motor 63. The cutting wheel 64 is used to cut the pipe fitting 5.

[0032] When the pipe fitting 5 needs to be cut, the user fits the pipe fitting 5 onto the power shaft 41, rotating ring 43, fixed support plate 44, inner support seat 45, and inner support block 46, so that one end of the pipe fitting 5 contacts the limiting groove ring 42. Then, the user starts the power motor 63, servo motor 3, and electric push rod 61. The power motor 63 starts and drives the cutting wheel 64 to rotate. The output shaft of the servo motor 3 rotates clockwise, driving the power shaft 41, the limiting groove ring 42, and the four fixed support plates 44 to rotate clockwise together. The four fixed support plates 44 rotate clockwise and simultaneously push the six inner support seats 45 along the grooves of the two rotating rings 43 through the three sliding grooves on the fixed support plates 44. The six inner support seats 45 move, causing the six inner support blocks 46 to contact the inner surface of the pipe fitting 5. The six inner support seats 45 continue to move, and the inner surface of the pipe fitting 5 presses against the six inner support blocks 46. The power shaft 41 continues to drive the power shaft 41, rotating ring 43, fixed support plate 44, inner support seats 45 and inner support blocks 46 to rotate forward. Through the six inner support seats 45 and inner support blocks 46, the pipe fitting 5 is also driven to rotate forward. At the same time, the telescopic rod of the electric push rod 61 retracts, causing the moving plate 62 to retract along the moving groove of the base 1. The retraction of the moving plate 62 also drives the power motor 63 and the cutting wheel 64 to retract together. The cutting wheel 64 contacts the outer surface of the pipe fitting 5. The cutting wheel 64 cuts the pipe fitting 5. The moving plate 62 continues to drive the power motor 63 and the cutting wheel 64 to retract. The cutting wheel 64 cuts into the inside of the pipe fitting 5. Then, through the six inner support seats 45 and the inner support blocks 46, the inside of the pipe fitting 5 is first tightened to make the pipe fitting 5 cut stably. Then, the pipe fitting 5 is driven to rotate forward. Then, through the cutting wheel 64, the pipe fitting 5 can be stably cut in a ring. When the cutting wheel 64 finishes cutting the pipe fitting 5, the user turns off the power motor 63 and adjusts the output shaft of the servo motor 3 to reverse. At the same time, the extension rod of the electric push rod 61 is activated to extend. The power motor 63 is turned off and no longer drives the cutting wheel 64. As the cutting wheel 64 rotates, it stops cutting the pipe 5. The output shaft of the servo motor 3 reverses, causing the power shaft 41, the limiting groove ring 42, and the four fixed support plates 44 to reverse as well. The four fixed support plates 44 reset, causing the six inner support seats 45 and the six inner support blocks 46 to reset as well. The six inner support blocks 46 no longer contact the inner side of the pipe 5. The extension rod of the electric push rod 61 extends, also causing the moving plate 62, the power motor 63, and the cutting wheel 64 to reset. The cutting wheel 64 disengages from the pipe 5. Finally, the user removes the cut pipe 5 from the power shaft 41, the rotating ring 43, the fixed support plates 44, the inner support seats 45, and the inner support blocks 46.

[0033] Example 2: Based on Example 1, such as Figure 8 - Figure 10As shown, it also includes an external clamping mechanism, which is mounted on the base 1. The external clamping mechanism is used to clamp the surface of the pipe fitting 5. The external clamping mechanism includes a fixing plate 71. Two fixing plates 71 are welded to the base 1. The two fixing plates 71 are symmetrically arranged. Two fixing rings 72 are welded between the two fixing plates 71. Each fixing ring 72 has an annular groove. Three sliding seats 73 are slidably connected to the annular groove of each fixing ring 72. An external clamping seat 74 is slidably connected to each sliding seat 73. A return spring 75 is connected between each sliding seat 73 and each external clamping seat 74. Each external clamping seat 74 is away from each external clamping seat 74. One side of each positioning spring 75 is fixedly connected to an outer clamping block 76. The outer clamping seat 74 and the outer clamping block 76 are used to clamp the outer surface of the pipe fitting 5. Each outer clamping block 76 is made of rubber. Each of the two fixing plates 71 is slidably connected to a moving rod 77. A fixed round rod 78 is welded to the upper moving rod 77. The bottom of the fixed round rod 78 is slidably connected to the curved groove of the limiting groove ring 42. Two fixed inclined rings 79 are welded between the two moving rods 77. The two fixed inclined rings 79 are used to push the six outer clamping seats 74. The two fixed inclined rings 79 are in contact with the six outer clamping seats 74. One side of each of the two fixed inclined rings 79 is an inclined surface.

[0034] The rotation of the limiting groove ring 42 pushes the fixed round rod 78, the two moving rods 77, and the two fixed inclined rings 79 away from the servo motor 3 through the curved groove on the limiting groove ring 42. The two fixed inclined rings 79 push the three outer clamps 74 and the three outer clamps 76 towards the outer surface of the pipe fitting 5 through the inclined surfaces on the fixed inclined rings 79. The return spring 75 is compressed, and the six outer clamps 76 simultaneously contact the outer surface of the pipe fitting 5. The six outer clamps 74 continue to move towards the outer surface of the pipe fitting 5. The outer surface of the pipe fitting 5 compresses the six outer clamps 76, causing them to deform. The three outer clamps 74 and the three outer clamps 76 on both sides simultaneously clamp the outer surface of the pipe fitting 5. At the same time, the six inner support seats 45 and the six inner support blocks 46 also drive the three sliding seats 73, the three outer clamps 74, and the three outer clamps 76 on both sides to rotate forward simultaneously through the pipe fitting 5. The three on the same side All the outer clamps 74 rotate along the fixed inclined ring 79 on the same side, clamping both the inner and outer surfaces of the pipe, making it easier to clamp the pipe fitting 5 more fully. This allows the cutting wheel 64 to cut the pipe fitting 5 more stably, and also allows the pipe fitting 5 to rotate more stably for circumferential cutting, improving the flatness of the cut and thus improving the cutting quality. After the pipe fitting 5 is cut circumferentially, the user turns off the servo motor 3. The power shaft 41 and the limiting groove ring 42 rotate exactly one revolution, and the fixed round rod 78, the two moving rods 77, and the two fixed inclined rings 79 reset. Under the action of the reset spring 75, the two fixed inclined rings 79 reset and no longer squeeze the six outer clamps 74 and the six outer clamping blocks 76. The output shaft of the servo motor 3 no longer drives the power shaft 41 and the limiting groove ring 42 to rotate, and the six sliding seats 73, the six outer clamps 74, the six outer clamping blocks 76, and the pipe fitting 5 also stop rotating.

[0035] Example 3: Based on Example 2, such as Figure 11 As shown, it also includes a clamping mechanism, which is mounted on the two moving rods 77. The clamping mechanism is used to clamp the cut part of the pipe fitting 5. The clamping mechanism includes a fixed inclined block 81. The fixed inclined block 81 is welded to both moving rods 77. The lifting rod 82 is slidably connected to both fixed plates 71. A tension spring 84 is connected between each lifting rod 82 and each fixed plate 71. A pressing round rod 83 is welded to each lifting rod 82. The fixed inclined block 81 is used to press the pressing round rod 83. The pressing round rod 83 is in contact with the fixed inclined block 81. A clamping ring 85 is welded to the end of each lifting rod 82 away from the tension spring 84. The two clamping rings 85 are used to clamp the pipe fitting 5. The two clamping rings 85 are located between the six outer clamps 74. The side of the two clamping rings 85 near the cutting wheel 64 has a cut.

[0036] The two moving rods 77 move away from the servo motor 3, simultaneously driving the two fixed inclined blocks 81 to move. The two fixed inclined blocks 81 move and compress the two lifting rods 82, the two extrusion rods 83, and the two clamping rings 85, causing them to move closer to each other. The two tension springs 84 are stretched, and the two clamping rings 85 move closer to each other to press the area to be cut on the outer surface of the pipe fitting 5. This reduces the vibration of the cutting wheel 64 on the cutting surface of the pipe when the cutting wheel 64 cuts the pipe fitting 5, thereby further improving the stability of the pipe cutting surface and making the cutting surface of the pipe fitting 5 smoother, thus further improving the cutting quality. After the pipe fitting 5 is cut, the two moving rods 77 reset and simultaneously drive the two fixed inclined blocks 81 to reset. Under the reset of the two tension springs 84, the two lifting rods 82, the two extrusion rods 83, and the two clamping rings 85 move away from each other, and the two clamping rings 85 no longer press the area to be cut on the outer surface of the pipe fitting 5.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision pipe cutting device, characterized in that: It includes a base (1), a support plate (2) fixedly connected to the base (1), a moving groove on the base (1), a servo motor (3) fixedly connected to the support plate (2), an inner support mechanism on the base (1), a pipe (5) placed on the inner support mechanism, the inner support mechanism being used to open the inside of the pipe (5), and a cutting mechanism on the base (1) being used to cut the pipe (5). The internal support mechanism includes a power shaft (41), which is fixedly connected to the output shaft of the servo motor (3). The power shaft (41) passes through the base (1). A limiting groove ring (42) is fixedly connected to the power shaft (41). The surface of the limiting groove ring (42) has a curved groove. Two sets of fixed support plates (44) are fixedly connected to the power shaft (41). Each set of fixed support plates (44) consists of two plates. Each fixed support plate (44) has three sliding grooves. The two fixed support plates (44) in each set are connected together. A rotating ring (43) is provided between each of the two rotating rings (43) and the power shaft (41) is rotatably connected. Each rotating ring (43) has six grooves and three inner support seats (45) are slidably connected to each rotating ring (43). The three sliding grooves on the two fixed support plates (44) of each group are slidably connected to the two sides of the three inner support seats (45). Each inner support seat (45) has a groove and an inner support block (46) is installed on the groove of each inner support seat (45).

2. The high-precision pipe cutting device according to claim 1, characterized in that: Each of the inner support blocks (46) is made of rubber.

3. A high-precision pipe cutting device according to claim 2, characterized in that: The cutting mechanism includes an electric push rod (61), which is fixedly connected to the base (1). A movable plate (62) is fixedly connected to the telescopic rod of the electric push rod (61). The movable plate (62) is slidably connected to the movable groove of the base (1). A power motor (63) is fixedly connected to the movable plate (62). A cutting wheel (64) is fixedly connected to the output shaft of the power motor (63). The cutting wheel (64) is used to cut the pipe fitting (5).

4. A high-precision pipe cutting device according to claim 3, characterized in that: It also includes an external clamping mechanism, which is disposed on the base (1) and is used to clamp the surface of the pipe fitting (5). The external clamping mechanism includes a fixing plate (71). Two fixing plates (71) are fixedly connected to the base (1). The two fixing plates (71) are symmetrically arranged. Two fixing rings (72) are fixedly connected between the two fixing plates (71). Both fixing rings (72) have annular grooves. Three sliding seats (73) are slidably connected to the annular groove of each fixing ring (72). An external clamping seat (74) is slidably connected to each sliding seat (73). 73) A return spring (75) is connected to each of the outer clamps (74). An outer clamp block (76) is fixedly connected to the side of each outer clamp (74) away from each return spring (75). A moving rod (77) is slidably connected to each of the two fixed plates (71). A fixed round rod (78) is fixedly connected to the upper moving rod (77). The bottom of the fixed round rod (78) is slidably connected to the curved groove of the limiting groove ring (42). Two fixed inclined rings (79) are fixedly connected between the two moving rods (77). The two fixed inclined rings (79) are respectively in contact with the six outer clamps (74).

5. A high-precision pipe cutting device according to claim 4, characterized in that: Each of the aforementioned outer clamps (76) is made of rubber.

6. A high-precision pipe cutting device according to claim 5, characterized in that: One side of each of the two fixed inclined rings (79) is an inclined plane.

7. A high-precision pipe cutting device according to claim 6, characterized in that: It also includes a clamping mechanism, which is mounted on the two moving rods (77). The clamping mechanism is used to clamp the cut part of the pipe fitting (5). The clamping mechanism includes a fixed inclined block (81). The fixed inclined block (81) is fixedly connected to both moving rods (77). The lifting rod (82) is slidably connected to both fixed plates (71). A tension spring (84) is connected between each lifting rod (82) and each fixed plate (71). A pressing round rod (83) is fixedly connected to each lifting rod (82). The pressing round rod (83) is in contact with the fixed inclined block (81). A clamping ring (85) is fixedly connected to the end of each lifting rod (82) away from the tension spring (84). The two clamping rings (85) are used to clamp the pipe fitting (5).

8. A high-precision pipe cutting device according to claim 7, characterized in that: The two clamping rings (85) are located between the six outer clamps (74).

9. A high-precision pipe cutting device according to claim 8, characterized in that: Both clamping rings (85) have slits on the side near the cutting wheel (64).

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