Electric pipe beveler with internal expansion

Abstract

The application discloses an inner expansion type electric pipe beveler, relates to the field of inner expansion type bevelers, and comprises a handle, a second box body is fixed at the top of the handle, a first box body is rotationally connected to one side of the second box body through a motor, a first servo motor is fixed to one side of the inner wall of the second box body, and a first threaded rod is fixed to the power output end of the first servo motor. The device is characterized in that: the extrusion blocks are inserted into the pipe by holding the handle, one of the extrusion blocks is attached to the inner wall of the pipe, the first servo motor is controlled to drive the first threaded rod to rotate, the friction between the extrusion plates and the pipe prevents the first connecting ring from rotating together with the first threaded rod, the angle between the first connecting rod and the second connecting rod is adjusted, the multiple extrusion plates are expanded at the same time, the multiple pointed protrusions increase the gripping force between the extrusion plates and the inside of the pipe, and thus the diameter of the pipe does not need to be measured and the expansion nut does not need to be selected, the diameter is expanded according to the size of the pipe, and the working efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of internal expansion beveling machines, and more particularly to internal expansion electric pipe beveling machines. Background Technology

[0002] Currently available internal expansion pipe beveling machines include an internal expansion mechanism, a beveling cutter holder, a motor, a rotating shaft, and a progressive mechanism for the cutter holder. The motor drives the rotating shaft to rotate, and the rotating shaft is linked with the beveling cutter holder. The motor can drive the cutter on the beveling cutter holder to perform the beveling operation, and the progressive mechanism for the cutter holder can drive the beveling cutter holder to perform the cutting operation. Then, the expansion nut is used to press the expansion block against the inner wall of the pipe to ensure stability during beveling.

[0003] When using the tube, the inner diameter of the tube needs to be measured in order to select the matching expansion block to install on the insertion end. This means that every time a different size of tube is used, a different model of expansion block needs to be replaced. Usually, there are four expansion blocks, and replacing them one by one takes a lot of time. At the same time, the bevel blades need to be installed at the corresponding positions according to the diameter of the tube, which means that the position of the blades also needs to be changed frequently, and the blades need to be disassembled and reassembled frequently. Utility Model Content

[0004] To address the problem of needing to measure pipe diameter to select the appropriate expansion nut model and then replacing them one by one, which is time-consuming, this application provides an internal expansion type electric pipe beveling machine.

[0005] The internal expansion electric pipe beveling machine provided in this application adopts the following technical solution: it includes a handle, a second box is fixed to the top of the handle, a first box is rotatably connected to one side of the second box via a motor, a first servo motor is fixed to one side of the inner wall of the second box, a first threaded rod is fixed to the power output end of the first servo motor, a first connecting ring is threaded to the outer wall of the first threaded rod, a first connecting rod is hinged to the outer wall of the first connecting ring via a first hinge seat, a second connecting rod is hinged to the bottom end of the first connecting rod via a second hinge seat, a second connecting ring is hinged to the top of the second connecting rod via a third hinge seat, a pressing plate is hinged to the bottom end of the second connecting rod via a fourth hinge seat, a blade adjustment mechanism is provided on one side of the first box, a bushing is fixed in the middle of the inner wall of the first box, and the first threaded rod and the bushing are rotatably connected through it.

[0006] By adopting the above technical solution, the first box rotates on the second box, causing the blade on the blade connecting block to bevel the pipe.

[0007] Preferably, the outer wall of the extrusion plate is arc-shaped, and a protrusion is fixed on one side of the outer wall of the extrusion plate. The top of the protrusion is pointed, and there are multiple protrusions arranged at equal intervals.

[0008] By adopting the above technical solution, the extrusion plate fits better with the inner wall of the tube, and multiple pointed protrusions increase the gripping force between the extrusion plate and the inside of the tube.

[0009] Preferably, the second hinge seat is located in the middle of the second connecting rod, and the bottom end of the first threaded rod is fixed with an anti-drop ring.

[0010] By adopting the above technical solution, the first servo motor drives the first threaded rod to rotate, thereby changing the position of the first connecting ring, adjusting the angle of the first connecting rod and the second connecting rod, and thus changing the position of the extrusion plate.

[0011] Preferably, there are multiple first connecting rods, second connecting rods, and extrusion plates, and the multiple first connecting rods, second connecting rods, and extrusion plates are arranged in a one-to-one correspondence and are equidistantly arranged on the outer wall of the first connecting ring.

[0012] By adopting the above technical solution, multiple extrusion plates expand simultaneously at the same angle, which can be adapted for use with cylindrical tubes.

[0013] Preferably, the blade adjustment mechanism includes a second servo motor, which is fixed above the middle of one side of the first housing. The power output end of the second servo motor is fixed with a second threaded rod, and the threads on both sides of the middle of the second threaded rod are in opposite directions.

[0014] By adopting the above technical solution, the rotation of the second servo motor is controlled to drive the rotation of the second threaded rod. The second threaded rod is located above the bushing and will not affect the rotation of the first box.

[0015] Preferably, the blade adjustment mechanism includes guide rails, and two guide rails are provided. The two guide rails are respectively located on both sides of the middle part of the first box, and sliders are slidably connected to the inner walls of the two guide rails. One end of the slider penetrates the outer wall of the first box.

[0016] By adopting the above technical solution, the slider can slide on the guide rail, thereby changing the position of the blade connecting block and the blade, so that it can fit the outer wall of the tube.

[0017] Preferably, a blade connecting block is fixed on one side of each of the two sliders, and a connecting block is fixed on the other side of each of the two sliders. The two connecting blocks are respectively threaded to both ends of the second threaded rod.

[0018] By adopting the above technical solution, the rotation of the second threaded rod, with the threads at both ends in opposite directions, can drive the two connecting blocks to move in opposite directions, so that the blade connecting blocks of the two sliders can be located on both sides of the outer wall of the tube.

[0019] In summary, this application includes at least the following beneficial technical effects:

[0020] 1. This application involves inserting the extrusion block into the tube by holding the handle, making one of the extrusion blocks fit against the inner wall of the tube, and then controlling the first servo motor to drive the first threaded rod to rotate. The friction between the extrusion plate and the tube prevents the first connecting ring from rotating with the first threaded rod, thereby changing the position of the first connecting ring and adjusting the angle of the first connecting rod and the second connecting rod. Multiple extrusion plates expand simultaneously, and multiple pointed protrusions increase the gripping force between the extrusion plate and the inside of the tube, thereby achieving the effect of improving work efficiency by expanding the diameter according to the tube size without measuring the tube diameter and selecting the expansion nut.

[0021] 2. This application adjusts the position of the blade connecting block according to the diameter of the tube, controls the rotation of the second servo motor, drives the second threaded rod to rotate, and the second threaded rod with opposite thread directions at both ends can drive the two connecting blocks to move in opposite directions, so that the blade connecting blocks of the two sliders can be located on both sides of the outer wall of the tube, thereby achieving the effect of quickly adjusting the position of the blade and making it more convenient to use. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the internal expansion electric pipe beveling machine according to an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure at the first servo motor in an embodiment of this application;

[0024] Figure 3 for Figure 2 An enlarged schematic diagram of the A-section structure;

[0025] Figure 4 This is a schematic diagram of the internal structure of the first box body according to an embodiment of this application;

[0026] Reference numerals: 1. Handle; 2. First housing; 3. Second housing; 4. First servo motor; 5. First threaded rod; 6. First connecting ring; 7. Second connecting ring; 8. First connecting rod; 81. First hinge seat; 82. Second hinge seat; 9. Second connecting rod; 91. Third hinge seat; 92. Fourth hinge seat; 10. Extrusion plate; 101. Protrusion; 11. Anti-drop ring; 12. Bushing; 13. Guide rail; 14. Slider; 141. Blade connecting block; 15. Connecting block; 16. Second servo motor; 17. Second threaded rod. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0028] This application discloses an internal expansion type electric pipe beveling machine, including a handle 1, a second housing 3 fixed to the top of the handle 1, a first housing 2 rotatably connected to one side of the second housing 3 via a motor, a first servo motor 4 fixed to one side of the inner wall of the second housing 3, a first threaded rod 5 fixed to the power output end of the first servo motor 4, a first connecting ring 6 threadedly connected to the outer wall of the first threaded rod 5, a first connecting rod 8 hinged to the outer wall of the first connecting ring 6 via a first hinge seat 81, a second connecting rod 9 hinged to the bottom end of the first connecting rod 8 via a second hinge seat 82, and a third connecting rod 9 hinged to the top end of the second connecting rod 9 via a third hinge seat 91. The bottom end of the second connecting ring 7 and the second connecting rod 9 is hinged to the extrusion plate 10 via the fourth hinge seat 92. The first connecting ring 6 moves up and down to change the angle of the first connecting rod 8 and the second connecting rod 9 through the cooperation of the first connecting rod 8 and the second connecting rod 9, thereby changing the position of the extrusion plate 10. The extrusion plate 10 fits and extrudes the inside of the tube. A blade adjustment mechanism is provided on one side of the first box 2. A bushing 12 is fixed in the middle of the inner wall of the first box 2. The first threaded rod 5 is rotatably connected to the bushing 12. The first box 2 rotates on the second box 3, driving the blade on the blade connecting block 141 to bevel the tube.

[0029] Reference Appendix Figure 1 The outer wall of the extrusion plate 10 is arc-shaped, and a protrusion 101 is fixed on one side of the outer wall of the extrusion plate 10. The top of the protrusion 101 is pointed, and there are multiple protrusions 101. The multiple protrusions 101 are arranged at equal intervals to fill the gap. The extrusion plate 10 fits into the inside of the tube. The arc-shaped extrusion plate 10 can fit into the inner wall of the tube better. At the same time, the multiple pointed protrusions 101 increase the gripping force between the extrusion plate 10 and the inside of the tube.

[0030] Reference Appendix Figure 2 and 3 The second hinge seat 82 is located in the middle of the second connecting rod 9. The bottom end of the first threaded rod 5 is fixed with an anti-drop ring 11. The first servo motor 4 drives the first threaded rod 5 to rotate, thereby changing the position of the first connecting ring 6, adjusting the angle of the first connecting rod 8 and the second connecting rod 9, and thus changing the position of the extrusion plate 10.

[0031] Reference Appendix Figure 1 and 2 The first connecting rod 8, the second connecting rod 9 and the extrusion plate 10 are provided in multiple ways. The multiple first connecting rods 8, the second connecting rods 9 and the extrusion plate 10 are arranged in a one-to-one correspondence and are located on the outer wall of the first connecting ring 6 in a circumferentially equidistant manner. The multiple extrusion plates 10 expand at the same time and at the same angle, which can be adapted to use with cylindrical tubes.

[0032] Reference Appendix Figure 4The blade adjustment mechanism includes a second servo motor 16, which is fixed above the middle of one side of the first housing 2. The power output end of the second servo motor 16 is fixed with a second threaded rod 17. The threads on both sides of the middle of the second threaded rod 17 are opposite in direction. By controlling the rotation of the second servo motor 16, the second threaded rod 17 is driven to rotate. The second threaded rod 17 is located above the bushing 12 and will not affect the rotation of the first housing 2.

[0033] Reference Appendix Figure 1 and 4 The blade adjustment mechanism includes two guide rails 13, which are respectively located on both sides of the middle of the first box 2. The inner walls of the two guide rails 13 are slidably connected to sliders 14. One end of the slider 14 penetrates the outer wall of the first box 2, allowing the slider 14 to slide on the guide rail 13, thereby changing the position of the blade connecting block 141 and the blade to adapt to the outer wall of the tube.

[0034] Reference Appendix Figure 1 and 4 Each of the two sliders 14 has a blade connecting block 141 fixed on one side and a connecting block 15 fixed on the other side. The two connecting blocks 15 are respectively threaded to both ends of the second threaded rod 17. By rotating the second threaded rod 17, the second threaded rod 17 with opposite thread directions at both ends can drive the two connecting blocks 15 to move in opposite directions, so that the blade connecting blocks 141 of the two sliders 14 can be located on both sides of the outer wall of the tube.

[0035] The implementation principle of the internal expansion type electric pipe beveling machine in this application embodiment is as follows: First, hold the handle 1 and insert the extrusion block 10 into the pipe, and make one of the extrusion blocks 10 fit against the inner wall of the pipe. Then, control the first servo motor 4 to drive the first threaded rod 5 to rotate. The friction between the extrusion plate 10 and the pipe prevents the first connecting ring 6 from rotating with the first threaded rod 5, thereby changing the position of the first connecting ring 6 to adjust the angle of the first connecting rod 8 and the second connecting rod 9. Multiple extrusion plates 10 expand simultaneously, and multiple pointed protrusions 101 increase the gripping force between the extrusion plate 10 and the inside of the pipe. When the extrusion plate 10 is fully in contact with the inner wall of the tube, the first servo motor 4 is stopped. Then, the two blades are fixed on the two blade connecting blocks 141 respectively. The position of the blade connecting blocks 141 is adjusted according to the diameter of the tube. The second servo motor 16 is controlled to rotate, which drives the second threaded rod 17 to rotate. The second threaded rod 17 with opposite thread directions at both ends can drive the two connecting blocks 15 to move in opposite directions, so that the blade connecting blocks 141 of the two sliders 14 can be located on both sides of the outer wall of the tube. Then, the motor is controlled to drive the first box 2 to rotate on the outer wall of the tube to perform beveling.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An internal expansion type electric pipe beveling machine, comprising a handle (1), wherein a second housing (3) is fixed to the top of the handle (1), and a first housing (2) is rotatably connected to one side of the second housing (3) via a motor, characterized in that: A first servo motor (4) is fixed on one side of the inner wall of the second box (3). A first threaded rod (5) is fixed on the power output end of the first servo motor (4). A first connecting ring (6) is threaded on the outer wall of the first threaded rod (5). A first connecting rod (8) is hinged to the outer wall of the first connecting ring (6) through a first hinge seat (81). A second connecting rod (9) is hinged to the bottom end of the first connecting rod (8) through a second hinge seat (82). A second connecting ring (7) is hinged to the top of the second connecting rod (9) through a third hinge seat (91). A pressing plate (10) is hinged to the bottom end of the second connecting rod (9) through a fourth hinge seat (92). A blade adjustment mechanism is provided on one side of the first box (2). A bushing (12) is fixed in the middle of the inner wall of the first box (2). The first threaded rod (5) and the bushing (12) are rotatably connected through each other.

2. The internal expansion type electric pipe beveling machine according to claim 1, characterized in that: The outer wall of the extrusion plate (10) is arc-shaped, and a protrusion (101) is fixed on one side of the outer wall of the extrusion plate (10). The top of the protrusion (101) is pointed, and there are multiple protrusions (101). The multiple protrusions (101) are arranged at equal intervals.

3. The internal expansion type electric pipe beveling machine according to claim 2, characterized in that: The second hinge seat (82) is located in the middle of the second connecting rod (9), and the bottom end of the first threaded rod (5) is fixed with an anti-drop ring (11).

4. The internal expansion type electric pipe beveling machine according to claim 3, characterized in that: Multiple first connecting rods (8), second connecting rods (9) and extrusion plates (10) are provided. Multiple first connecting rods (8), second connecting rods (9) and extrusion plates (10) are arranged in a one-to-one correspondence and are located on the outer wall of the first connecting ring (6) in a circumferentially equidistant manner.

5. The internal expansion type electric pipe beveling machine according to claim 1, characterized in that: The blade adjustment mechanism includes a second servo motor (16), which is fixed above the middle of one side of the first housing (2). The power output end of the second servo motor (16) is fixed with a second threaded rod (17), and the threads on both sides of the middle of the second threaded rod (17) are opposite in direction.

6. The internal expansion type electric pipe beveling machine according to claim 5, characterized in that: The blade adjustment mechanism includes a guide rail (13), and there are two guide rails (13). The two guide rails (13) are respectively located on both sides of the middle part of the first box (2), and the inner walls of the two guide rails (13) are slidably connected with sliders (14). One end of the slider (14) penetrates the outer wall of the first box (2).

7. The internal expansion type electric pipe beveling machine according to claim 6, characterized in that: Each of the two sliders (14) has a blade connecting block (141) fixed on one side and a connecting block (15) fixed on the other side. The two connecting blocks (15) are respectively threaded to both ends of the second threaded rod (17).

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