Pipe arc opening cutting machine

Abstract

The invention belongs to the technical field of machining, and particularly relates to a pipe arc opening cutting machine which comprises a pipe fixing mechanism and two sets of tool apron mechanisms symmetrically arranged, each tool apron mechanism comprises a gear box, a cutter head is arranged on the outer side of each gear box, a cutter head shaft is arranged on one side of each cutter head, and each cutter head shaft extends into the corresponding gear box. A large gear and a small gear which are meshed with each other are arranged in the gearbox, the large gear is fixedly connected with the cutter head shaft, the small gear is fixedly connected with a rotating shaft, and the rotating shaft is driven by a motor. The two sets of tool apron mechanisms are fixedly connected with the movable frame, and the distance between the two sets of tool apron mechanisms is fixed. The pipe fixing mechanism comprises a placing frame, an opening of the placing frame faces rightwards, a pipe is placed at the opening of the placing frame, and the center line of the pipe is perpendicular to the center connecting line of the cutter heads of the two sets of cutter holder mechanisms. The pipe machining device is high in machining efficiency, long pipes can be machined, the protection cover plate is arranged, the safety effect is achieved, and the safety of eyes and the face of an operator is protected; and the device is small in size and very portable.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, in particular to a pipe arc cutting machine. Background Art

[0002] Groove processing is an important preparatory step before metal welding. Existing groove processing generally uses hand grinders or mold stamping. Hand grinders are not only inefficient but also labor-intensive. Mold stamping requires a set of molds for each specification, and the angle cannot be adjusted. Not only are there many vulnerable parts, but it is also troublesome to replace and adjust the mold, and the positioning is inaccurate. In addition, stamping requires a punch press, which is not portable.

[0003] The utility model patent with the patent number "201320730734.6" and the patent name "A double-head beveling machine for pipe fittings" discloses a double-head beveling machine, which performs beveling on both ends of the pipe fittings at the same time. The problem is that when the length of the pipe fittings is greater than the maximum length of the beveling machine, it cannot be placed in the beveling machine for processing, and the pipe fittings need to be placed between the beveling machines, which makes the equipment large in size, occupies a large area, and is not portable. Summary of the invention

[0004] In order to overcome the defects of the above-mentioned prior art, the present invention proposes a pipe arc cutting machine, which can not only process pipes of longer lengths, but also is very portable. The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0005] A pipe arc cutting machine comprises a pipe fixing mechanism and two sets of symmetrically arranged knife seat mechanisms, the knife seat mechanism comprises a gear box, a knife disc is arranged on the outer side of the gear box, a knife disc shaft is arranged on one side of the knife disc, the knife disc shaft extends into the gear box, a large gear and a small gear meshing with each other are arranged in the gear box, the large gear is fixedly connected to the knife disc shaft, the small gear is fixedly connected to the rotating shaft, and the rotating shaft is driven by a motor; the two sets of knife seat mechanisms are respectively fixedly connected to a moving frame, the distance between the two sets of knife seat mechanisms is fixed, a guide rail is arranged below the moving frame, a slider is arranged on the guide rail, the slider is fixedly connected to the moving frame, and the guide rail is fixedly connected to a base; the pipe fixing mechanism comprises a placing frame, the opening of the placing frame faces rightward, the placing frame is fixed on a base, the base is retractable, the pipe is placed at the opening of the placing frame, and the center line of the pipe is perpendicular to the center line connecting the knife discs of the two sets of knife seat mechanisms.

[0006] Furthermore, the cutter discs of the two sets of cutter seat mechanisms are respectively a left cutter disc and a right cutter disc. A first cutter disc shaft is arranged on one side of the left cutter disc, a first screw hole is arranged on the other side of the left cutter disc, and a positive thread is arranged in the first screw hole; a second cutter disc shaft is arranged on one side of the right cutter disc, a second screw hole is arranged on the other side of the right cutter disc, and a reverse thread is arranged in the second screw hole. The left cutter disc and the right cutter disc are arranged symmetrically.

[0007] Furthermore, the cutter head shaft is connected to the gear box via a bearing, and the rotating shaft is connected to the gear box via a bearing.

[0008] Furthermore, it also includes an adjustment mechanism, which includes an adjustment rod and a dial, one end of the adjustment rod is movably connected to the base, and the other end of the adjustment rod is fixedly connected to the base, the dial is arranged below the adjustment rod, and the dial is fixedly connected to the side of the base.

[0009] Specifically, a first through hole is arranged at one end of the adjusting rod, a third screw hole matching with the first through hole is arranged on the base, and the first through hole and the third screw hole are fixed by screws; a second through hole and a fourth screw hole are arranged at the other end of the adjusting rod, a third through hole matching with the fourth screw hole is arranged on the base, and the third through hole and the fourth screw hole are fixed by long screws; a first arc-shaped long hole is arranged on the dial, and the long screw passes through the first arc-shaped long hole.

[0010] Specifically, an auxiliary clamp is arranged on one side of the placement rack, and the auxiliary clamp comprises a fixing rod, one side of the fixing rod is fixedly connected to the placement rack, and a fifth screw hole is arranged on the other side of the fixing rod, and the screw rod passes through the fifth screw hole.

[0011] Specifically, soft glue is provided at the end of the screw rod.

[0012] Preferably, a positioning mechanism is arranged at the rear of the placement rack, the positioning mechanism includes a fixing seat and a fine-tuning plate, a first fixing screw hole and a second fixing screw hole are arranged on the side of the fixing seat, a fourth through hole and a fifth through hole are arranged at one end of the fine-tuning plate, a horizontal plate is arranged at the other end of the fine-tuning plate, a sixth through hole and a second arc-shaped long hole are arranged on the horizontal plate, a sixth screw hole matching the sixth through hole is arranged on the fixing seat, a seventh screw hole matching the second arc-shaped long hole is arranged on the fixing seat, the sixth through hole and the sixth screw hole are fixed by long screws, the second arc-shaped long hole and the seventh screw hole are fixed from bottom to top by long screws, and the long screws pass through the second arc-shaped long hole.

[0013] Preferably, the base includes a fixed part and a telescopic part, a square groove is arranged at the lower end of the fixed part, a square tube of the telescopic part is arranged in the square groove, and the square tube can be extended into the square groove or pulled out of the square groove; a third fixing screw hole and a fourth fixing screw hole are arranged on the end side of the fixed part.

[0014] Particularly, a protective cover plate is arranged between the two sets of tool holder mechanisms, the protective cover plate is fixedly connected to the upper ends of the two sets of tool holder mechanisms respectively, and the protective cover plate is a transparent plate.

[0015] The invention has high processing efficiency, can process pipes with a relatively long length, and is provided with a protective cover plate to play a safety role, protecting the eyes and face of operators; and has a small size and is very portable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 for Figure 1 A top view of

[0018] Figure 3 for Figure 1 sectional view of

[0019] Figure 4 It is a structural schematic diagram of the left cutter disc and the right cutter disc;

[0020] Figure 5 It is a structural diagram of the regulating mechanism;

[0021] Figure 6 is a structural schematic diagram of the auxiliary fixture;

[0022] Figure 7 is a structural schematic diagram of the positioning mechanism;

[0023] Figure 8 for Figure 7 Right view of;

[0024] Fig. 9 It is a top view of the fixing seat and the fine-tuning plate;

[0025] Fig.10 This is a usage state diagram of the present invention. DETAILED DESCRIPTION

[0026] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A top view of Figure 3 for Figure 1 The cross-sectional view, combined with Figures 1 to 3 As shown, a pipe arc cutting machine includes a pipe fixing mechanism and two sets of symmetrically arranged knife seat mechanisms, the knife seat mechanism includes a gear box 1, a knife disc is arranged on the outside of the gear box 1, a knife disc shaft is arranged on one side of the knife disc, the knife disc shaft extends into the gear box 1, a large gear 1.1 and a small gear 1.2 that mesh with each other are arranged in the gear box 1, the large gear 1.1 is fixedly connected to the knife disc shaft 2.1, the small gear 1.2 is fixedly connected to the rotating shaft 4, and the rotating shaft 4 is driven by a motor 5; the two sets of knife seat mechanisms are respectively connected to the movable The frame 6 is fixedly connected, the distance between the two sets of tool holder mechanisms is fixed, a guide rail 7 is arranged below the mobile frame 6, a slider 8 is arranged on the guide rail 7, the slider 8 is fixedly connected to the mobile frame 6, and the guide rail 7 is fixedly connected to the base 9; the pipe fixing mechanism includes a placing frame 10, the opening of the placing frame 10 faces right, the placing frame 10 is fixed on the base 11, the base 11 is retractable, the pipe 30 is placed at the opening of the placing frame 10, and the center line of the pipe 30 is perpendicular to the center line of the cutter disc 2 of the two sets of tool holder mechanisms.

[0027] Figure 4 It is a schematic diagram of the structure of the left cutter disc and the right cutter disc, as shown in Figure 4 As shown, the cutter discs of the two sets of cutter seat mechanisms are respectively a left cutter disc 2 and a right cutter disc 3. A first cutter disc shaft 2.1 is arranged on one side of the left cutter disc 2, a first screw hole 2.2 is arranged on the other side of the left cutter disc 2, and a positive thread is arranged in the first screw hole 2.2; a second cutter disc shaft 3.1 is arranged on one side of the right cutter disc 3, a second screw hole 3.2 is arranged on the other side of the right cutter disc 3, and a reverse thread is arranged in the second screw hole 3.2. The left cutter disc 2 and the right cutter disc 3 are symmetrically arranged; when in use, the left cutter disc 2 is installed with the left The tool 40 is installed on the right cutter disc 3 with a right cutter 41. The left cutter 40 and the right cutter 41 of the present embodiment are grinding wheel cutters. The left cutter disc 2 and the right cutter disc 3 have the same direction of rotation, that is, the left cutter disc 2 rotates counterclockwise and the right cutter disc 3 rotates clockwise. The cutter disc shaft is connected to the gear box 1 through a bearing, and the rotating shaft 4 is connected to the gear box 1 through a bearing. The present invention can achieve 2.7 times the speed of the motor through the cooperation of the large gear 1.1 and the small gear 1.2, with a fast speed and high processing efficiency.

[0028] Figure 5 This is a schematic diagram of the structure of the adjustment mechanism. Figure 5 and Figure 2 As shown, it also includes an adjustment mechanism, which includes an adjustment rod 12 and a dial 13. One end of the adjustment rod 12 is movably connected to the base 9, and the other end of the adjustment rod 12 is fixedly connected to the base 11. The dial 13 is arranged below the adjustment rod 12, and the dial 13 is fixedly connected to the side of the base 9; a first through hole 12.1 is arranged at one end of the adjustment rod 12, and a third screw hole 9.1 matching the first through hole 12.1 is arranged on the base 9, and the first through hole 12.1 and the third screw hole 9.1 are fixed by screws; a second through hole 12.1 is arranged at the other end of the adjustment rod 12 A through hole 12.2 and a fourth screw hole 12.3, a third through hole 11.7 matched with the fourth screw hole 12.3 is arranged on the base 11, and the third through hole 11.7 and the fourth screw hole 12.3 are fixed by a long screw; a first arc-shaped long hole 13.1 is arranged on the scale plate 13, the long screw passes through the first arc-shaped long hole 13.1, a scale is arranged below the first arc-shaped long hole 13.1, the second through hole 12.2 is used for viewing the scale, the adjusting rod 12 can swing along the first through hole 12.1, and the function of the adjusting mechanism is to adjust the curvature of the arc mouth of the cut pipe.

[0029] Figure 6 is a schematic diagram of the structure of the auxiliary fixture, such as Figure 6As shown, an auxiliary clamp is arranged on one side of the placement rack 10, and the auxiliary clamp includes a fixing rod 14. One side of the fixing rod 14 is fixedly connected to the placement rack 10, and a fifth screw hole 14.1 is arranged on the other side of the fixing rod 14. The screw rod 15 passes through the fifth screw hole 14.1. The fixing rod 14 of this embodiment is U-shaped; a soft glue 16 is arranged at the end of the screw rod 15, and the function of the soft glue 16 is to prevent the auxiliary clamp from being vibrated loose.

[0030] Figure 7 is the structural diagram of the positioning mechanism. Figure 8 for Figure 7 Right view of Fig. 9 This is a top view of the fixed seat and fine-tuning plate, as shown in Figures 7 to 9 As shown, a positioning mechanism is arranged at the rear of the placement rack 10, and the positioning mechanism includes a fixing seat 17 and a fine-tuning plate 18. A first fixing screw hole 17.1 and a second fixing screw hole 17.2 are arranged on the side of the fixing seat 17. A positioning tube 21 is arranged at one end of the fine-tuning plate 18 for positioning the pipe 30. A transverse plate 18.1 is arranged at the other end of the fine-tuning plate 18. A sixth through hole 18.2 and a second arc-shaped long hole 18.3 are arranged on the transverse plate 18.1. A sixth screw hole 17.3 matching with the sixth through hole 18.2 is arranged on the fixing seat 17. A seventh screw hole 17.4 matching with the second arc-shaped long hole 18.3 is arranged on the fixing seat 17. The sixth through hole 18.2 and the sixth screw hole 17.3 are fixed by long screws, and the second arc-shaped long hole 18.3 and the seventh screw hole 17.4 are fixed from bottom to top by long screws, and the long screws pass through the second arc-shaped long hole 18.3. The function of the fine-tuning plate 18 is to adjust the direction of the positioning tube 21 to facilitate the positioning tube 21 and one end of the pipe 30 with a groove to limit the positioning tube 21; the positioning tube 21 of the present invention can be replaced at any time and replaced with a positioning tube with the same diameter as the pipe 30.

[0031] The base 11 comprises a fixed portion 11.1 and a telescopic portion 11.2. A square groove 11.3 is arranged at the lower end of the fixed portion 11.1. A square tube 11.4 of the telescopic portion 11.2 is arranged in the square groove 11.3. The square tube 11.4 can be inserted into the square groove 11.3 or pulled out of the square groove 11.3. A third fixing screw hole 11.5 and a fourth fixing screw hole 11.6 are arranged on the side surface of the end of the fixed portion 11.1. Since the pipe fixing mechanism is separated from the two sets of tool holder mechanisms in the present invention, the pipe 30 does not need to be placed between the two sets of tool holder mechanisms, so that the two sets of tool holder mechanisms of the present invention are small in size. When used with the pipe fixing mechanism, a pipe with a longer length can be processed. The present invention is not only portable, but also the length of the processed pipe is not limited by the volume of the tool holder mechanism. That is, the present invention has a small volume and can process a pipe with a length longer than the length of the tool holder mechanism.

[0032] Fig.10 It is the usage state diagram of the present invention, such as Fig.10As shown, a protective cover 19 is provided between the two sets of tool holder mechanisms, and the protective cover 19 is respectively fixedly connected to the upper ends of the two sets of tool holder mechanisms. The two ends of the protective cover 19 of this embodiment are respectively fixedly connected to the upper end of the gear box 1. The protective cover 19 is a transparent plate, and the protective cover plays a safety role, protecting the eyes and face of the operator. A handle 20 is provided on the movable frame 6, and the handle 20 is fixedly connected to the movable frame 6, so as to push the movable frame 6 to move left and right.

[0033] See also Figure 6 and Fig.10 As shown, when the present invention is used, the pipe 30 is first placed between the placement rack 10 and the soft glue 16, and then the pipe 30 is pressed against the placement rack 10 from right to left, the pipe 30 is pressed by hand, and the screw rod 15 is rotated to make the soft glue 16 press the pipe 30, and then the motor 5 can be started to make the left cutter head 2 rotate counterclockwise and the right cutter head 3 rotate clockwise, thereby driving the left cutter 40 to rotate counterclockwise and the right cutter 41 to rotate clockwise, so that the pipe 30 can be grooved, and the handle 20 is used to move the shift The movable frame 6 moves left and right to quickly complete the beveling; then the pipe 30 is taken out from between the placement frame 10 and the soft glue 16, the pipe mouth is turned, and the other end of the pipe 30 is beveled. After the pipe 30 is placed between the placement frame 10 and the soft glue 16 again, one end of the pipe 30 with the bevel is limited by the positioning tube 21, and then the other end of the pipe 30 can be beveled. Due to the limitation of the positioning tube 21, the bevels at both ends of the pipe 30 are ensured to be consistent, and the processing efficiency is high.

[0034] In short, the present invention has high processing efficiency, and can not only process pipes of relatively long lengths, but also has a protective cover plate to play a safety role, protecting the eyes and face of operators; and the present invention is small in size and very portable.

Claims

1. A pipe cutting machine, characterized in that: It includes a pipe fixing mechanism and two sets of symmetrically arranged knife seat mechanisms, the knife seat mechanism includes a gear box, a knife disc is arranged on the outer side of the gear box, a knife disc shaft is arranged on one side of the knife disc, the knife disc shaft extends into the gear box, a large gear and a small gear meshing with each other are arranged in the gear box, the large gear is fixedly connected to the knife disc shaft, the small gear is fixedly connected to the rotating shaft, and the rotating shaft is driven by a motor; the two sets of the knife seat mechanisms are respectively fixedly connected to the moving frame, and the distance between the two sets of the knife seat mechanisms is fixed and unchanged, a guide rail is arranged under the moving frame, a slider is arranged on the guide rail, the slider is fixedly connected to the moving frame, and the guide rail is fixedly connected to the base; the pipe fixing mechanism includes a placing frame, the opening of the placing frame faces right, the placing frame is fixed on the base, the base is retractable, the pipe is placed at the opening of the placing frame, and the center line of the pipe is perpendicular to the center line of the knife discs of the two sets of knife seat mechanisms.

2. The pipe arc cutting machine according to claim 1 is characterized in that: The cutter discs of the two sets of cutter seat mechanisms are respectively a left cutter disc and a right cutter disc. A first cutter disc shaft is arranged on one side of the left cutter disc, a first screw hole is arranged on the other side of the left cutter disc, and a positive thread is arranged in the first screw hole; a second cutter disc shaft is arranged on one side of the right cutter disc, a second screw hole is arranged on the other side of the right cutter disc, and a reverse thread is arranged in the second screw hole. The left cutter disc and the right cutter disc are symmetrically arranged.

3. The pipe arc cutting machine according to claim 1 is characterized in that: The cutter head shaft is connected to the gear box via a bearing, and the rotating shaft is connected to the gear box via a bearing.

4. The pipe arc cutting machine according to claim 1, characterized in that: It also includes an adjustment mechanism, which includes an adjustment rod and a dial, one end of the adjustment rod is movably connected to the base, the other end of the adjustment rod is fixedly connected to the base, the dial is arranged below the adjustment rod, and the dial is fixedly connected to the side of the base.

5. The pipe arc cutting machine according to claim 4 is characterized in that: A first through hole is provided at one end of the adjusting rod, a third screw hole matching with the first through hole is provided on the base, and the first through hole and the third screw hole are fixed by screws; a second through hole and a fourth screw hole are provided at the other end of the adjusting rod, a third through hole matching with the fourth screw hole is provided on the base, and the third through hole and the fourth screw hole are fixed by long screws; a first arc-shaped long hole is provided on the dial, and the long screw passes through the first arc-shaped long hole.

6. The pipe arc cutting machine according to claim 1, characterized in that: An auxiliary clamp is arranged on one side of the placement rack, and the auxiliary clamp comprises a fixing rod, one side of the fixing rod is fixedly connected to the placement rack, and a fifth screw hole is arranged on the other side of the fixing rod, and a screw rod passes through the fifth screw hole.

7. The pipe arc cutting machine according to claim 6 is characterized in that: Soft glue is arranged at the end of the screw rod.

8. The pipe arc cutting machine according to claim 1, characterized in that: A positioning mechanism is arranged at the rear of the placement rack, and the positioning mechanism includes a fixing seat and a fine-tuning plate, a first fixing screw hole and a second fixing screw hole are arranged on the side of the fixing seat, a fourth through hole and a fifth through hole are arranged at one end of the fine-tuning plate, a horizontal plate is arranged at the other end of the fine-tuning plate, a sixth through hole and a second arc-shaped long hole are arranged on the horizontal plate, a sixth screw hole matching with the sixth through hole is arranged on the fixing seat, a seventh screw hole matching with the second arc-shaped long hole is arranged on the fixing seat, the sixth through hole and the sixth screw hole are fixed by long screws, the second arc-shaped long hole and the seventh screw hole are fixed from bottom to top by long screws, and the long screw passes through the second arc-shaped long hole.

9. The pipe arc cutting machine according to claim 1, characterized in that: The base includes a fixed part and a telescopic part. A square groove is arranged at the lower end of the fixed part. The square tube of the telescopic part is arranged in the square groove. The square tube can be extended into the square groove or pulled out of the square groove. A third fixing screw hole and a fourth fixing screw hole are arranged on the side of the end of the fixed part.

10. The pipe arc cutting machine according to claim 1, characterized in that A protective cover plate is arranged between the two sets of tool holder mechanisms. The protective cover plates are respectively fixedly connected to the upper ends of the two sets of tool holder mechanisms, and the protective cover plates are transparent plates.

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