Device for cutting off inner curled edge of pipeline

Abstract

The utility model discloses pipeline inner curled edge cutting equipment in the technical field of pipeline inner curled edge cutting, which comprises a positioning disc, a motor fixedly arranged on the outer side of the positioning disc, a mounting cylinder fixedly arranged at the power end of the motor, an extension rod movably inserted into the inner side of the mounting cylinder, a cutting knife arranged on the outer side of a cutting disc, and a mounting rod rotationally arranged on the inner side of the positioning disc. First bevel gears are fixedly arranged on the outer sides of the mounting rods, multiple sets of lead screws are rotationally arranged on the inner side of the positioning disc, second bevel gears are fixedly arranged on the outer sides of the multiple sets of lead screws and engaged with the first bevel gears, movable blocks are arranged on the outer sides of the lead screws in a threaded and sleeving mode, and arc-shaped blocks are fixedly arranged at the outer side ends of the movable rods. By means of the simple installation structure, the whole device can be conveniently positioned, the use stability of the device is improved, inner curled edges can be stably cut off, the cutting-off efficiency and the cutting-off effect are effectively improved, the inner wall of a pipeline is prevented from being damaged, the practical effect is good, and the device is worthy of being used and popularized in the existing market.

Description

Technical Field

[0001] This utility model relates to the field of pipe internal edge cutting technology, and more specifically, to a pipe internal edge cutting device. Background Technology

[0002] Hot-melt welding is a common pipe connection method widely used in the connection of polyethylene pipes for gas, drainage, and water supply. After hot-melt welding, outward and inward curls often occur at the weld joint. Inward curls not only obstruct fluid flow within the pipe, reducing flow velocity, but also impact the weld when fluid passes through, causing damage. Therefore, it is necessary to remove the inward curls.

[0003] Currently, the removal of rolled edges in pipes mainly relies on manual hand-held cutting machines. If the rolled edge is located at the edge of the pipe, manual removal is still possible. However, when the rolled edge is located deep inside the pipe, if the inner diameter of the pipe is small, workers cannot enter the pipe to operate. They can only mount the cutting machine on an extension rod and then extend the extension rod into the pipe to remove it. During this process, because it is inconvenient to position the cutting machine, it will swing around. At best, it will not be able to remove the rolled edge quickly and accurately; at worst, it will damage the inner wall of the pipe, making it quite inconvenient to use.

[0004] In view of this, we propose a pipe internal edge cutting device. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this invention is to provide a pipe internal rolled edge cutting device to solve the problem mentioned in the background art that the existing technology is inconvenient to cut the internal rolled edge deep in the pipe, thus reducing cutting efficiency and cutting effect.

[0007] 2. Technical Solution

[0008] A pipe internal edge cutting device includes a positioning plate. A motor is fixedly mounted on the outer side of the positioning plate, and an installation cylinder is fixedly mounted on the power end of the motor. An extension rod is movably inserted into the inner side of the installation cylinder. The extension rod movably passes through the installation cylinder and extends to the outer side. A cutting disc is fixedly mounted on the outer end of the extension rod located on the outer side of the installation cylinder. A cutting blade is mounted on the outer side of the cutting disc. An installation rod is rotatably mounted on the inner side of the positioning plate. A first bevel gear is fixedly mounted on the outer side of the installation rod. Multiple sets of lead screws are rotatably mounted on the inner side of the positioning plate. A second bevel gear is fixedly mounted on the outer side of each set of lead screws. The second bevel gear meshes with the first bevel gear. A movable block is threaded onto the outer side of the lead screw. The movable block movably passes through the positioning plate and extends to the outer side. A movable rod is fixedly mounted on the outer side of the movable block located on the outer side of the positioning plate. An arc-shaped block is fixedly mounted on the outer end of the movable rod. The installation rod movably passes through the positioning plate and extends to the outer side. A knob is fixedly mounted on the outer end of the installation rod located on the outer side of the positioning plate.

[0009] Preferably, an electric push rod is provided inside the cutting disc, one end of the electric push rod is connected to the cutting disc, and the other end of the electric push rod is fixedly provided with a mounting base, and the cutting blade is fixedly installed on the outside of the mounting base.

[0010] Preferably, an L-shaped block is fixedly provided on the outside of the mounting cylinder, and a connecting block is fixedly provided on the outside of the extension rod. The connecting block movably passes through the mounting cylinder and extends to the outside. An adjusting screw is rotatably provided on the outer part of the connecting block located on the outside of the mounting cylinder. The adjusting screw thread passes through the L-shaped block and extends to the outside. A sliding groove for docking the connecting block is provided through the outer side of the mounting cylinder.

[0011] Preferably, the outer side of the positioning disk has through slots for multiple sets of docking movable blocks.

[0012] Preferably, limit blocks are fixedly provided on both sides of the mounting base, and two sets of limit grooves for docking limit blocks are opened on the inner side of the cutting disc.

[0013] Preferably, a limiting post is fixedly provided on the outer side of the L-shaped block, and an annular groove for docking with the limiting post is opened on the outer side of the positioning disk, and the limiting post slides within the annular groove.

[0014] 3. Beneficial effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] 1. This utility model, by setting up a positioning plate, motor, mounting cylinder, extension rod, cutting plate, first bevel gear, lead screw, arc block, second bevel gear and other structures, and through the cooperation of each structure, makes it easy to position the whole device, improve the stability of the device, thereby enabling stable cutting of the inner rolled edge, effectively improving the cutting efficiency and cutting effect, and avoiding damage to the inner wall of the pipe.

[0017] 2. This utility model, by setting up an electric push rod, an L-shaped block, a connecting block, an adjusting screw, a limiting block, a limiting groove, and other structures, and through the cooperation of each structure, makes it easy to cut off the inner rolled edge of pipes of different lengths and widths, thereby improving the applicability of the device and meeting various usage needs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall positioning structure of this utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the cut-off structure of this utility model;

[0021] Figure 4 This is a diagram illustrating the connection effect of the positioning structure of this utility model.

[0022] Figure 5 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0023] The following are the labels in the diagram: 1. Positioning plate, 2. Motor, 3. Mounting cylinder, 4. Extension rod, 5. Cutting plate, 6. Mounting base, 7. Cutting blade, 8. Electric push rod, 9. L-shaped block, 10. Connecting block, 11. Adjusting screw, 12. Mounting rod, 13. First bevel gear, 14. Knob, 15. Lead screw, 16. Movable block, 17. Movable rod, 18. Arc block, 19. Second bevel gear, 20. Through groove, 21. Limiting block, 22. Limiting groove, 23. Limiting post, 24. Annular groove. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Please see Figure 1-5 This utility model provides a technical solution:

[0028] A pipe internal edge cutting device includes a positioning plate 1. A motor 2 is fixedly mounted on the outer side of the positioning plate 1. An installation cylinder 3 is fixedly mounted on the power end of the motor 2. An extension rod 4 is movably inserted into the inner side of the installation cylinder 3, extending through the installation cylinder 3 and to the outer side. A cutting disc 5 is fixedly mounted on the outer part of the extension rod 4 located on the outer side of the installation cylinder 3. A cutting blade 7 is mounted on the outer side of the cutting disc 5. An installation rod 12 is rotatably mounted on the inner side of the positioning plate 1. A first bevel gear 13 is fixedly mounted on the outer side of the installation rod 12. Multiple sets of lead screws 15 are rotatably mounted on the inner side of the positioning plate 1. A second bevel gear 19 is fixedly mounted on the outer side of each set of lead screws 15. The first bevel gear 13 is engaged, and the outer side of the lead screw 15 is threaded with a movable block 16. The movable block 16 moves through the positioning disk 1 and extends to the outside. A movable rod 17 is fixedly installed on the outer side of the movable block 16 located on the outer side of the positioning disk 1. An arc-shaped block 18 is fixedly installed on the outer end of the movable rod 17. The mounting rod 12 moves through the positioning disk 1 and extends to the outside. A knob 14 is fixedly installed on the outer end of the mounting rod 12 located on the outer side of the positioning disk 1. A soft protective pad is provided on the outer side of the arc-shaped block 18. On the one hand, it can increase the friction between the arc-shaped block 18 and the pipe, making the device more secure. On the other hand, it can also prevent the pipe from being damaged during the fixing process.

[0029] Specifically, an electric push rod 8 is provided inside the cutting disc 5. One end of the electric push rod 8 is connected to the cutting disc 5, and the other end of the electric push rod 8 is fixedly provided with a mounting base 6. The cutting blade 7 is fixedly installed on the outside of the mounting base 6. By providing the electric push rod 8, the position of the mounting base 6 and the cutting blade 7 can be easily adjusted, thereby facilitating the cutting of the inner edge of pipes with different inner diameters. At the same time, the electric push rod 8 is powered independently by the battery inside the cutting disc 5, thereby enabling the rotation of the cutting disc 5 and the normal use of the electric push rod 8. In addition, a charging port for connecting the battery is provided on the outside of the cutting disc 5 for convenient charging.

[0030] Furthermore, an L-shaped block 9 is fixedly installed on the outside of the mounting cylinder 3, and a connecting block 10 is fixedly installed on the outside of the extension rod 4. The connecting block 10 movably passes through the mounting cylinder 3 and extends to the outside. An adjusting screw 11 is rotatably installed on the outer part of the connecting block 10 located on the outside of the mounting cylinder 3. The adjusting screw 11 is threaded through the L-shaped block 9 and extends to the outside. A sliding groove for engaging the connecting block 10 is opened through the outside of the mounting cylinder 3. By rotating the adjusting screw 11, the connecting block 10 and the extension rod 4 can be easily moved. This ensures the stability of the cutting disc 5 while facilitating the adjustment of the length of the extension rod 4.

[0031] It is worth noting that the outer side of the positioning disk 1 has a through groove 20 through which multiple sets of docking movable blocks 16 are opened. The through groove 20 can limit the movable blocks 16, so that when the lead screw 15 rotates, it can drive the movable blocks 16 to translate, and then drive the movable rod 17 and the arc block 18 to translate.

[0032] It is worth noting that limit blocks 21 are fixedly installed on both sides of the mounting base 6, and two sets of limit grooves 22 for docking the limit blocks 21 are opened on the inner side of the cutting disc 5. When the mounting base 6 moves, it can drive the limit blocks 21 to slide in the limit grooves 22, so as to facilitate the adjustment of the cutting blade 7 and ensure the stability of the cutting blade 7.

[0033] In addition, a limiting post 23 is fixedly installed on the outside of the L-shaped block 9, and an annular groove 24 is opened on the outside of the positioning plate 1 to connect with the limiting post 23. The limiting post 23 slides within the annular groove 24. Through the limiting cooperation of the limiting post 23 and the annular groove 24, the mounting cylinder 3 can be supported while facilitating its rotation, thus ensuring the overall strength of the mounting cylinder 3.

[0034] Working principle: First, the entire device is placed inside the pipe. Then, the knob 14 is turned, causing the mounting rod 12 and the first bevel gear 13 to rotate. The first bevel gear 13 drives multiple sets of second bevel gears 19 to rotate, and the second bevel gears 19 drive the lead screw 15 to rotate. At this time, the movable block 16, which is sleeved on the outside of the lead screw 15, moves along the lead screw 15 under the limiting action of the through groove 20. When the movable block 16 moves, it drives the movable rod 17 and the arc-shaped block 18 to move until the multiple sets of arc-shaped blocks 18 are tightly fitted against the inner wall of the pipe, thereby enabling the device to... The device is positioned and fixed. Then, by rotating the adjusting screw 11, the extension rod 4 can be moved. When the extension rod 4 moves, the cutting disc 5 moves. When the cutting disc 5 is moved to the edge, the electric push rod 8 is turned on by the external power supply to move the mounting base 6. The movement of the mounting base 6 moves the cutting blade 7 so that the cutting blade 7 aligns with the edge. Finally, the motor 2 is turned on to rotate the mounting cylinder 3 and the extension rod 4. The rotation of the extension rod 4 drives the cutting disc 5 and the cutting blade 7 to rotate. The rotating cutting blade 7 can cut off the edge.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pipe internal edge cutting device, comprising a positioning plate (1), characterized in that: A motor (2) is fixedly installed on the outside of the positioning disk (1). A mounting cylinder (3) is fixedly installed on the power end of the motor (2). An extension rod (4) is movably inserted into the inside of the mounting cylinder (3). The extension rod (4) movably passes through the mounting cylinder (3) and extends to the outside. A cutting disk (5) is fixedly installed on the outer part of the extension rod (4) located on the outside of the mounting cylinder (3). A cutting blade (7) is installed on the outside of the cutting disk (5). An installation rod (12) is rotatably installed on the inside of the positioning disk (1). A first bevel gear (13) is fixedly installed on the outside of the installation rod (12). Multiple sets of lead screws (15) are rotatably installed on the inside of the positioning disk (1). The lead screw (15) is fixedly provided with a second bevel gear (19) on its outer side. The second bevel gear (19) meshes with the first bevel gear (13). The lead screw (15) is threaded with a movable block (16) on its outer side. The movable block (16) moves through the positioning disk (1) and extends to the outside. The movable block (16) is fixedly provided with a movable rod (17) on the outer side of the positioning disk (1). The movable rod (17) is fixedly provided with an arc-shaped block (18) on its outer end. The mounting rod (12) moves through the positioning disk (1) and extends to the outside. The mounting rod (12) is fixedly provided with a knob (14) on the outer side of the positioning disk (1).

2. The pipe internal edge cutting device according to claim 1, characterized in that: An electric push rod (8) is provided on the inner side of the cutting disc (5). One end of the electric push rod (8) is connected to the cutting disc (5), and the other end of the electric push rod (8) is fixedly provided with a mounting base (6). The cutting blade (7) is fixedly installed on the outside of the mounting base (6).

3. The pipe internal edge cutting device according to claim 1, characterized in that: An L-shaped block (9) is fixedly installed on the outside of the mounting cylinder (3), and a connecting block (10) is fixedly installed on the outside of the extension rod (4). The connecting block (10) moves through the mounting cylinder (3) and extends to the outside. An adjusting screw (11) is rotatably installed on the part of the connecting block (10) located outside the mounting cylinder (3). The adjusting screw (11) is threaded through the L-shaped block (9) and extends to the outside. A sliding groove for docking the connecting block (10) is opened through the outside of the mounting cylinder (3).

4. The pipe internal edge cutting device according to claim 1, characterized in that: The positioning disk (1) has a through groove (20) with multiple sets of docking movable blocks (16) through it on the outside.

5. The pipe internal edge cutting device according to claim 2, characterized in that: Limiting blocks (21) are fixedly provided on both sides of the mounting base (6), and two sets of limiting grooves (22) of docking limiting blocks (21) are opened on the inner side of the cutting disc (5).

6. The pipe internal edge cutting device according to claim 3, characterized in that: The L-shaped block (9) is fixedly provided with a limiting post (23) on the outside, and the positioning disk (1) is provided with an annular groove (24) for docking with the limiting post (23) on the outside, and the limiting post (23) slides within the annular groove (24).

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