A pipe end flattening device

Abstract

The utility model discloses a pipe orifice cuts flat device belongs to pipeline operation technical field, including main support rod, and the inside of main support rod is provided with the positioning mechanism that can support the connection with the inner wall of pipeline, and the positioning mechanism includes: thread groove, sliding slot, positioning recess, screw rod A, sliding rod, support plate, linkage rod A, linkage rod B, and the inside of main support rod is hollow setting, and the half hollow of main support rod inserts and is provided with thread groove, and the half hollow of other inserts and is provided with sliding slot. The utility model discloses the mobility of sliding rod in the inside of sliding slot can make linkage rod A, linkage rod B synchronous movement, and then make support plate synchronous extension or shrink, and the surface of support plate is arc setting, and is pasted with one millimeter thick rubber pad, and when support plate is extended, cooperation rubber pad can be pasted with the inner wall of pipeline and enhance friction, provide a supporting property for main support rod, avoid the additional pressure of pipeline simultaneously and cause pipeline to lose circle.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline operation technology, specifically a pipe end cutting device. Background Technology

[0002] Pipeline construction is an engineering operation that covers the entire process of route planning, excavation, pipe laying, joint treatment, pressure testing and disinfection. It aims to build a safe and stable water supply and drainage system. Pipelines are like blood vessels, playing an indispensable role in the urban system.

[0003] In pipeline construction, the connection methods for pipe ends made of different materials generally include cement sealing, welding, socket welding, and hot fusion. Hot fusion connection is more suitable for polymer material pipes. The general operation process is to clean and align the pipes, heat the connection surfaces to a molten state, then press them together, and finally cool them to form a complete sealing surface at the pipe ends. It has the effects of high sealing strength and simple operation.

[0004] Before performing heat fusion connection on the pipes, cleanliness must be ensured, and the pipe ends must be flat. Therefore, the pipe ends need to be cut flat. The cutting flattening process serves two purposes: first, to ensure the pipe ends are flat, which facilitates uniform heating and fusion; and second, to directly clean the impurities and oil stains adhering to the pipe ends. Therefore, a cutting flattening device is required.

[0005] Existing pipe-cutting devices are gantry-type shears that fit over the pipe. The screw is rotated to move the blades and shear the pipe with pressure. While this device can cut the pipe flat, it also puts pressure on the pipe, causing the pipe end to become out of round. Although polymer materials are tough and can rebound, they can still have some impact in minor areas. Therefore, a new type of pipe-cutting device was designed to avoid applying excessive pressure to the pipe while still cutting it flat. Utility Model Content

[0006] The purpose of this utility model is to provide a pipe end flattening device in order to solve the above-mentioned problems.

[0007] The technical solution adopted by this utility model is as follows: a pipe end cutting device, including a main support rod, wherein the main support rod is provided with a positioning mechanism that can be supported and connected to the inner wall of the pipe;

[0008] The positioning mechanism includes: threaded groove, sliding groove, positioning recess, lead screw A, sliding rod, support plate, linkage rod A, and linkage rod B;

[0009] The main support rod is hollow inside, and a threaded groove is embedded in half of the hollow part of the main support rod, and a sliding groove is embedded in the other half of the hollow part. A positioning recess is symmetrically embedded in one side of the outer wall of the main support rod. There are several groups of positioning recesses, which are evenly arranged side by side. The end of the positioning bolt is provided with a round head, which is movably fitted with the positioning recess.

[0010] The threaded groove is internally connected to a lead screw A, the sliding groove is internally connected to a sliding rod, the outer wall of the other side of the main support rod is rotatably connected to a linkage rod A, the outer wall of the sliding rod is rotatably connected to a linkage rod B, and the other ends of the linkage rod A and the linkage rod B are rotatably connected to a support plate. There are at least four sets of linkage rod A, linkage rod B and support plate, which are evenly distributed, and linkage rod A and linkage rod B are of equal length.

[0011] The main support rod is equipped with a cutting and flattening component on its exterior, which can cut and flatten the pipe opening.

[0012] The flat cutting assembly includes: a sliding sleeve, positioning bolts, a turntable, a limiting groove, a cutter sleeve, a guide rod, a lead screw B, and a cutter head;

[0013] A sliding sleeve is movably connected to one side of the main support rod. Positioning bolts are symmetrically embedded on one side of the sliding sleeve. A turntable is rotatably connected to the other end of the sliding sleeve. A limit groove is integrally provided on one side of the turntable.

[0014] A blade sleeve is slidably connected inside the limiting groove. A blade head is installed inside the blade sleeve by bolts. Guide rods are symmetrically arranged outside the blade sleeve. A lead screw B is rotatably connected between the guide rods outside the blade sleeve. Both the guide rods and the lead screw B extend out of a turntable. The guide rods are slidably connected to the turntable, and the lead screw B is threadedly connected to the turntable.

[0015] The support plate has an arc-shaped surface and is fitted with a one-millimeter-thick rubber pad.

[0016] The connection between the lead screw A and the slide rod is a rotatable connection.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] 1. In this utility model, by utilizing the mobility of the sliding rod inside the sliding groove, the linkage rod A and linkage rod B can move synchronously, thereby causing the support plate to extend or retract synchronously. The surface of the support plate is arc-shaped and is fitted with a one-millimeter-thick rubber pad. When the support plate extends, it can fit against the inner wall of the pipe and enhance friction with the rubber pad, providing support for the main support rod and avoiding additional pressure on the pipe that could cause it to become out of round, thus improving its practicality.

[0019] 2. In this utility model, by rotating the turntable with the handle, the cutter head and the pipe opening can move in a circular motion, thereby cutting the pipe opening flat and facilitating welding. This structure can ensure the accuracy of cutting the pipe opening flat, and the whole device is easy to use. Attached Figure Description

[0020] Figure 1 This is a simplified schematic diagram of the overall three-dimensional structure of this utility model;

[0021] Figure 2 This is a simplified schematic diagram of the planar structure in the working state of this utility model;

[0022] Figure 3 This is a simplified schematic diagram of a partial three-dimensional structure of the present invention;

[0023] Figure 4 This is a simplified schematic diagram of a partial three-dimensional structure of the present invention;

[0024] Figure 5 This is a simplified schematic diagram of a partial three-dimensional structure of the present invention;

[0025] Figure 6 This is a simplified schematic diagram of a partial three-dimensional structure of the present invention.

[0026] The markings in the diagram are: 1. Main support rod; 101. Threaded groove; 102. Slide groove; 103. Positioning recess; 2. Lead screw A; 201. Slide rod; 3. Support plate; 301. Linkage rod A; 302. Linkage rod B; 4. Slide sleeve; 401. Positioning bolt; 5. Turntable; 501. Limiting groove; 6. Tool holder; 601. Guide rod; 602. Lead screw B; 7. Tool head. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In this utility model:

[0029] Reference Figure 1-6 A pipe end cutting device includes a main support rod 1, and the main support rod 1 is provided with a positioning mechanism that can be supported and connected to the inner wall of the pipe.

[0030] The positioning mechanism includes: threaded groove 101, sliding groove 102, positioning recess 103, lead screw A2, sliding rod 201, support plate 3, linkage rod A301, and linkage rod B302;

[0031] The main support rod 1 is hollow inside, and a threaded groove 101 is embedded in one half of the hollow part of the main support rod 1, and a sliding groove 102 is embedded in the other half of the hollow part. A positioning recess 103 is symmetrically embedded in the outer wall of one side of the main support rod 1. There are several groups of positioning recesses 103, which are evenly arranged side by side. The end of the positioning bolt 401 is provided with a round head, which is movably engaged with the positioning recess 103. By engaging with the positioning recess 103, the position of the sliding sleeve 4 can be fixed according to the cutting position, which finally facilitates the operation of the cutter head 7.

[0032] A lead screw A2 is engaged inside the threaded groove 101, and a slide rod 201 is slidably connected inside the slide groove 102. A linkage rod A301 is rotatably connected to the outer wall of the other side of the main support rod 1, and a linkage rod B302 is rotatably connected to the outer wall of the slide rod 201. Both linkage rods A301 and B302 are rotatably connected to a support plate 3 at their other ends. There are at least four sets of linkage rods A301, B302, and support plates 3, evenly distributed, and linkage rods A301 and B302 are of equal length. The mobility of the slide rod 201 within the slide groove 102 allows the linkage rods A301 and B302 to move synchronously, thereby causing the support plate 3 to extend or retract synchronously. The surface of the support plate 3 is arc-shaped and is fitted with a one-millimeter-thick rubber pad. When the support plate 3 extends, it can fit against the inner wall of the pipe and enhance friction with the rubber pad, providing support for the main support rod 1 and avoiding additional pressure on the pipe that could cause it to lose its roundness. This allows for flat cutting between the cutter head 7 and the pipe opening.

[0033] The main support rod 1 is equipped with a cutting and flattening component on its exterior, which can cut and flatten the pipe opening.

[0034] The flat cutting assembly includes: a sliding sleeve 4, a positioning bolt 401, a turntable 5, a limiting groove 501, a cutter sleeve 6, a guide rod 601, a lead screw B602, and a cutter head 7;

[0035] A sliding sleeve 4 is externally connected to one side of the main support rod 1. A positioning bolt 401 is symmetrically embedded on one side of the sliding sleeve 4. A turntable 5 is rotatably connected to the other end of the sliding sleeve 4. A limit groove 501 is integrally provided on one side of the turntable 5.

[0036] A cutter sleeve 6 is slidably connected inside the limiting groove 501. A cutter head 7 is bolted inside the cutter sleeve 6. Guide rods 601 are symmetrically arranged outside the cutter sleeve 6. A lead screw B602 is rotatably connected between the guide rods 601 outside the cutter sleeve 6. Both the guide rods 601 and the lead screw B602 extend into a turntable 5. The guide rods 601 and the turntable 5 are slidably connected, and the lead screw B602 is threadedly connected to the turntable 5. By rotating the lead screw B602 with a handle, the cutter sleeve 6 can move inside the limiting groove 501 under the engagement of the thread and the guiding action of the guide rods 601, thereby driving the cutter head 7 to move, facilitating the interaction between the cutter head 7 and the pipe opening. Then, by rotating the turntable 5 with a handle, the cutter head 7 can move in a circular motion with the pipe opening, thereby cutting the pipe opening flat for easy welding. This structure can ensure the accuracy of cutting the pipe opening flat and is more convenient to operate.

[0037] Furthermore, the connection between the lead screw A2 and the slide bar 201 is a rotatable connection, and the inner diameter of the threaded groove 101 is larger than the inner diameter of the slide groove 102. This setting can ensure that the slide bar 201 can move inside the threaded groove 101. At the same time, when the lead screw A2 is rotated, the engagement of the threaded surface can be used to link the slide bar 201 to perform linear motion inside the slide groove 102, thereby improving the practicality of the device.

[0038] Furthermore, the limiting groove 501, the tool sleeve 6, and the tool head 7 are arranged at an angle to the turntable 5. This arrangement allows the tool head 7 to cut at an angle when it contacts the pipe opening, which is more labor-saving.

[0039] Furthermore, both lead screws A2 and B602 are made of high-strength steel, which can provide stable support, and the high-density threads have the characteristic of preventing loosening. At the same time, lead screws A2, B602, and turntable 5 are all equipped with handles, making operation more labor-saving and convenient.

[0040] Furthermore, the width of the cutter head 7 is 5-10 cm, which allows it to cover pipes of various sizes.

[0041] Working principle: First, the support plate 3 is placed inside the pipe. Then, by rotating the lead screw A2, the engagement of the threaded surfaces causes the sliding rod 201 to move linearly within the groove 102. The mobility of the sliding rod 201 within the groove 102 allows the linkage rods A301 and B302 to move synchronously, causing the support plate 3 to extend synchronously. When the support plate 3 extends, it, in conjunction with the rubber pad, adheres to the inner wall of the pipe, increasing friction and providing support for the main support rod 1. Next, the engagement between the round head of the positioning recess 103 and the positioning recess 103 allows for adjustment based on the cut position. The position of the sliding sleeve 4 is fixed. Then, by rotating the screw B602 with the handle, the cutter sleeve 6 can move inside the limiting groove 501 under the action of the thread engagement and the guidance of the guide rod 601, thereby driving the cutter head 7 to move, facilitating the interaction between the cutter head 7 and the pipe opening. Then, by rotating the turntable 5 with the handle, the cutter head 7 can move in a circular motion with the pipe opening, thereby cutting the pipe opening flat for easy welding. This structure can ensure the accuracy of cutting the pipe opening flat. After cutting the pipe opening flat, rotating the screw B602 in the opposite direction will cause the support plate 3 to retract synchronously, allowing the device to be removed.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipe end flattening device, comprising a main support rod (1), characterized in that: The main support rod (1) is equipped with a positioning mechanism that can be supported and connected to the inner wall of the pipe. The positioning mechanism includes: threaded groove (101), sliding groove (102), positioning recess (103), lead screw A (2), sliding rod (201), support plate (3), linkage rod A (301), and linkage rod B (302); The main support rod (1) is hollow inside, and a threaded groove (101) is embedded in one half of the hollow part of the main support rod (1), and a sliding groove (102) is embedded in the other half of the hollow part. A positioning recess (103) is symmetrically embedded in the outer wall of one side of the main support rod (1). The threaded groove (101) is internally connected to a lead screw A (2), the sliding groove (102) is internally connected to a sliding rod (201), the outer wall of the other side of the main support rod (1) is rotatably connected to a linkage rod A (301), the outer wall of the sliding rod (201) is rotatably connected to a linkage rod B (302), and the other ends of the linkage rod A (301) and the linkage rod B (302) are rotatably connected to a support plate (3). The main support rod (1) is provided with a cutting and flattening component on the outside, which can cut and flatten the pipe opening; The flat cutting assembly includes: a sliding sleeve (4), a positioning bolt (401), a turntable (5), a limiting groove (501), a cutter sleeve (6), a guide rod (601), a lead screw B (602), and a cutter head (7); A sliding sleeve (4) is movably connected to one side of the main support rod (1). A positioning bolt (401) is symmetrically embedded on one side of the sliding sleeve (4). A turntable (5) is rotatably connected to the other end of the sliding sleeve (4). A limit groove (501) is integrally provided on one side of the turntable (5). A blade sleeve (6) is slidably connected inside the limiting groove (501). A blade head (7) is installed inside the blade sleeve (6) by bolts. Guide rods (601) are symmetrically arranged outside the blade sleeve (6). A lead screw B (602) is rotatably connected between the guide rods (601) outside the blade sleeve (6).

2. The pipe end flattening device as described in claim 1, characterized in that: The guide rod (601) and the lead screw B (602) both extend out of the turntable (5). The guide rod (601) is slidably connected to the turntable (5), and the lead screw B (602) is threadedly connected to the turntable (5).

3. The pipe end flattening device as described in claim 1, characterized in that: The linkage rod A (301), linkage rod B (302), and support plate (3) are at least four sets, evenly distributed, and linkage rod A (301) and linkage rod B (302) are of equal length.

4. The pipe end flattening device as described in claim 1, characterized in that: The surface of the support plate (3) is arc-shaped and is fitted with a rubber pad that is one millimeter thick.

5. The pipe end flattening device as described in claim 1, characterized in that: The connection between the lead screw A (2) and the slide rod (201) is a rotatable connection.

6. The pipe end flattening device as described in claim 1, characterized in that: The number of positioning recesses (103) is several groups, which are evenly arranged in parallel, and the end of the positioning bolt (401) is provided with a round head, which is movably engaged with the positioning recess (103).

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