A tool and method for unloading materials at pipe intersections.

Abstract

This invention provides a cutting tool and method for pipe intersections, including a vertical pole, a horizontal rotating rod, two vertical telescopic rods, and a pulling component. The bottom of the vertical pole is fixed to the vertical pole by a fixing component. The middle part of the horizontal rotating rod is sleeved on the vertical pole and rotates around the vertical pole as the rotation center. The two vertical telescopic rods are respectively fixed to the horizontal rotating rod. Each vertical telescopic rod includes a telescopic inner rod and a telescopic outer rod sleeved outside the telescopic inner rod. The top and bottom ends of the telescopic inner rod are respectively provided with a top marking structure and a bottom marking structure. The pulling component includes an elastic component, a fixing rod fixed to the telescopic inner rod, and a detachable adjusting rod fixed to the telescopic outer rod. The elastic component is fixed between the fixing rod and the adjusting rod. A support component is sleeved on the vertical pole to support the template paper tube. This invention eliminates the need for manual precise marking with template paper. Simple manual operation can accurately mark the intersection lines on the main and branch pipes, ensuring the accuracy of the joint cutting.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, specifically relating to a material cutting tool and method for pipe intersections. Background Technology

[0002] In the process of chemical construction and pipeline engineering, it is often necessary to meet two pipelines at an intersection on site. Before the pipelines are joined, it is necessary to make a hole at a suitable position on the outer wall of the main pipeline and cut the end of the branch pipe into a curve. This involves the layout and cutting of the intersection line when the two pipelines meet.

[0003] The traditional method involves workers unfolding a template paper on the ground, using a compass and ruler to mark multiple equal division points on the circumference, measuring the height of each division point, connecting all the height points with a line, cutting off the excess portion of the template paper along this line, then attaching the cut template paper to the outer wall of the pipe, tracing the intersection line onto the outer wall, and finally cutting the material. However, this method is complex, tedious, error-prone, and lacks precision. Without knowledge of geometric drafting, it is difficult for ordinary skilled workers to operate. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a cutting tool and method for pipe intersections. This method facilitates the cutting, layout, and marking of intersections between two pipes of any diameter and angle. It is convenient to use, eliminating the need for manual marking with templates. Even with simple manual operation, the intersection line can be accurately marked on the main and branch pipes, ensuring the cutting accuracy of the joint.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] A cutting tool for pipe intersections, comprising:

[0007] The upright has a fixing component at the bottom that can be detachably fixed to the main pipe, and the upright is rotatably connected to the fixing component;

[0008] A horizontal rotating rod is sleeved on the vertical pole in the middle and can rotate about the vertical pole as the center of rotation.

[0009] Two vertical telescopic rods are fixed to the horizontal rotating rod respectively. Each vertical telescopic rod includes an inner telescopic rod and an outer telescopic rod sleeved on the outside of the inner telescopic rod. The outer telescopic rod is detachably fixed to the horizontal rotating rod. The top and bottom ends of the inner telescopic rod are respectively provided with a top marking structure and a bottom marking structure. The top marking structure is used to mark lines on the template paper tube, and the bottom marking structure is used to mark lines on the main pipe. The radius of the template paper tube is the same as the radius of the branch pipe.

[0010] The pulling element includes an elastic element, a fixed rod fixed to the telescopic inner rod, and an adjustable rod detachably fixed to the telescopic outer rod. One end of the elastic element is fixed to the fixed rod, and the other end is fixed to the adjustable rod.

[0011] The support component, fitted onto the upright, is used to support the template paper tube.

[0012] Furthermore, the bottom of the upright is provided with a rotating ball, the fixed support is detachably fixed to the main pipe, and the fixed support is provided with a spherical groove to accommodate the rotating ball.

[0013] Furthermore, the bottom of the fixed support is provided with a magnet or a screw hole.

[0014] Furthermore, it also includes auxiliary fixing components, which include a lifting adjustment ring sleeved on the upright and a third locking component for locking the lifting adjustment ring. The lifting adjustment ring is provided with an auxiliary fixing support that is detachably fixed to the main pipeline.

[0015] Furthermore, the auxiliary fixing support is provided with a magnet or a screw hole.

[0016] Furthermore, the horizontal rotating rod is provided with a first horizontal adjusting groove, and the vertical telescopic rod is disposed in the first adjusting groove and can move horizontally within the first adjusting groove and is fixed in the adjusting groove by a first locking member;

[0017] The telescopic outer rod is provided with a vertical second adjustment groove, and the adjustment rod passes through the second adjustment groove and is locked to the telescopic outer rod by a second locking member.

[0018] Furthermore, both the top and bottom marking structures are spring-loaded markers, and each spring-loaded marker contains a spring that can push the pen tip outward.

[0019] Furthermore, the bottom scribe structure is an oxygen cutter or a plasma cutter.

[0020] Furthermore, the support member includes a support ring fixed on the upright, umbrella ribs disposed on the support ring, and a telescopic spring steel ring wrapped around the umbrella ribs, wherein the umbrella ribs are locked by tightening screws.

[0021] A method for using a cutting tool for pipe intersections, applicable to any of the pipe intersection cutting tools described above, includes the following steps:

[0022] Step 1: Make a template paper tube with the same radius as the branch pipe, and attach the upright to the top of the outer wall of the main pipe using the fastener;

[0023] Step 2: Adjust the horizontal rotating rod to be parallel to the axis of the main pipe and lock it with the first locking piece. Then adjust the two vertical telescopic rods so that the vertical distance from the top and bottom marking structures of the telescopic inner rod to the axis of the upright rod is equal to the radius of the template paper tube. Lock the telescopic outer rod on the horizontal rotating rod to ensure that the telescopic outer rod will not move. Then adjust the tension of the elastic element to a suitable size to ensure that the telescopic inner rod can slide freely up and down. Fix the adjusting rod.

[0024] Step 3: Adjust the support on the upright to ensure it can support the template paper tube;

[0025] Step 4: Adjust the top and bottom marking structures at both ends of the telescopic inner rod so that the top marking structure just touches the outer wall of the template paper tube. Then adjust the height of the telescopic outer rod and the bottom marking structure so that the bottom marking structure just falls on the outer wall of the main pipe.

[0026] Step 5: Hold the horizontal rotating rod and rotate it half a circle around the vertical rod. During the rotation, the telescopic inner rod slides downward under the spring tension to ensure that the top and bottom marking structures move up and down synchronously during the rotation. After the rotation is completed, a closed curve is left on the outer wall of the main pipe and the template paper tube. The closed curve is the intersection line that needs to be cut before the main pipe or branch pipe is joined.

[0027] Step 6: Cut the main pipe along the closed curve and then cut the material. Place the template paper tube on the branch pipe and cut the branch pipe along the closed curve of the template paper tube.

[0028] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0029] (1) Traditional pipe intersections require template paper to be laid out on the ground according to different pipe diameters and different intersection angles, and lines to be drawn on a 1:1 scale. In this invention, the intersection lines of the main pipe and the template paper tube are drawn separately. With this device, the horizontal rotating rod rotates half a circle and the intersection lines of the main pipe and the template paper tube are drawn at the same time.

[0030] (2) The traditional layout method is based on the principles of axonometric drawing and three-view drawing. For some workers who do not have certain geometric drawing knowledge, layout is technically difficult. This device is easy to operate. Just install each component according to the instructions and rotate it smoothly half a turn to draw the intersection line of the main pipe and the template paper tube in one go.

[0031] (3) Traditional template paper unfolding and pattern making requires each diameter and each angle to be laid out separately, resulting in a large amount of repetitive work. However, this device can adjust the diameter and angle arbitrarily within a certain range, and can adapt to cross joints of different pipe diameters and different angles. Attached Figure Description

[0032] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and are intended to explain the invention, but do not constitute an undue limitation thereof. In the drawings:

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the lower structure of the present invention.

[0035] Figure 3 This is a schematic diagram of the upper structure of the present invention.

[0036] Figure 4 This is a schematic diagram of the intersection of the main pipe and the branch pipe at one angle according to the present invention.

[0037] Figure 5 This is a schematic diagram of the intersection of the main pipe and branch pipe of the present invention from another angle.

[0038] Figure 6 This is a schematic diagram of the material feeding tool of the present invention fixed on the main pipe.

[0039] Figure 7 This is a schematic diagram of the invention drawn on the main pipe and the template paper tube.

[0040] The components include: 1. Upright pole; 2. Fixing component; 3. Lifting and adjusting ring; 4. Diagonal brace; 5. Auxiliary fixed support; 6. Horizontal rotating rod; 7. Vertical telescopic rod; 71. Telescopic inner rod; 72. Telescopic outer rod; 8. First locking component; 9. Elastic component; 10. Fixing rod; 11. Adjusting rod; 12. Support component; 13. Telescopic spring steel ring; 14. Clamp; 15. Bottom marking structure; 16. Top marking structure; 17. Main pipe; 18. Branch pipe; 19. Umbrella rib; 20. Bayonet. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element 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 the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0043] This invention provides a material feeding tool for pipe intersections, such as... Figures 1-7 As shown, it includes a vertical pole 1, a horizontal rotating rod 6, a vertical telescopic rod 7, a pulling component, and a support component 12.

[0044] The bottom of the upright 1 is provided with a fixing member 2 that can be detachably fixed to the main pipe 17. The upright 1 is rotatably connected to the fixing member 2. The upright 1 is used to support the entire material cutting tool on the main pipe 17. By rotating the fixing member 2, the upright 1 can be tilted at a certain angle relative to the main pipe 17. The tilt angle is determined by the included angle between the main pipe 17 and the branch pipe 18. For example, when the main pipe 17 and the branch pipe 18 are a tee, rotating the fixing member 2 will tilt the upright 1 at 90 degrees relative to the main pipe 17.

[0045] The horizontal rotating rod 6 is sleeved on the vertical rod 1 in the middle, and can rotate with the vertical rod 1 as the center of rotation.

[0046] Two vertical telescopic rods 7 are fixed to both ends of the horizontal rotating rod 6. Each vertical telescopic rod includes an inner telescopic rod 71 and an outer telescopic rod 72 sleeved on the outside of the inner telescopic rod 71. The outer telescopic rod 72 is fixed to the horizontal rotating rod 6 by a first locking member 8. The inner telescopic rod 71 has a top marking structure 16 and a bottom marking structure 15 at its top and bottom ends, respectively. The top marking structure 16 is used to mark lines on the template paper tube, and the bottom marking structure 15 is used to mark lines on the main pipe 17. The inner telescopic rod 71 can move up and down relative to the outer telescopic rod 72. Therefore, when the bottom marking structure 15 rotates along the contour of the outer wall of the main pipe 17, the top marking structure 16 can also rotate along the contour of the outer wall of the template paper tube. Since the top marking structure 16 and the bottom marking structure 15 are respectively located at both ends of the telescopic inner rod 71, the downward movement distance of the bottom marking structure 15 is consistent with the downward movement distance of the top marking structure 16, thereby ensuring that the lines on the main pipe 17 and the lines on the template paper tube are completely overlapped, thus guaranteeing the accuracy of the interface material cutting.

[0047] The pulling component includes an elastic element 9, a fixed rod 10 fixed to the telescopic inner rod 71, and an adjusting rod 11 detachably fixed to the telescopic outer rod 72 via a second locking component. One end of the elastic element 9 is fixed to the fixed rod 10, and the other end is fixed to the adjusting rod 11. To allow the top marking structure 16 to move with the outer wall of the template paper tube and the bottom marking structure 15 to move with the outer wall of the main pipe 17, the present invention also includes a pulling component. Pulling the elastic element 9 and fixing the adjusting rod 11 to the telescopic outer rod 72 allows the elastic element 9 to maintain a certain tension, and pulls the telescopic inner rod 71 downward, making it easier for the top marking structure 16 to mark lines on the template paper tube and for the bottom marking structure 15 to mark lines on the main pipe 17.

[0048] Support component 12 is mounted on upright 1 to support the template paper tube.

[0049] Since the branch pipe 18 is relatively heavy, a template paper tube is used instead of the branch pipe 18. The template paper tube is placed on the support member 12. After the line is drawn, the template paper tube is first removed and the excess paper is cut off along the curve on the template paper tube. Then it is placed on the outer wall of the branch pipe 18. The curve is traced to the outer wall of the branch pipe 18 and then the material is cut according to the line.

[0050] Traditional pipe intersections require using template paper to lay out and mark lines on the ground according to different pipe diameters and intersection angles, using a 1:1 scale. This invention marks the intersection lines of the main pipe 17 and the template paper tube separately. With this device, the horizontal rotating rod 6 rotates half a turn, marking the intersection lines of the main pipe 17 and the template paper tube simultaneously in one go.

[0051] Traditional layout methods rely on the principles of isometric drawings and three-view drawings. For workers who do not have certain geometric drawing knowledge, layout can be technically difficult. This device is easy to operate. Just install each component according to the instructions and then rotate it smoothly half a turn to mark the intersection line of the main pipe 17 and the template paper tube in one go.

[0052] Traditional template paper unfolding and pattern making requires each diameter and each angle to be laid out separately, resulting in a large amount of repetitive work. However, this device allows for arbitrary adjustment of diameter and angle within a certain range, which can adapt to cross joints of different pipe diameters and angles.

[0053] like Figure 4 and Figure 5 As shown, with a diameter A diameter pipe is vertically connected to the main pipe 17 Taking branch pipe 18 as an example, and using the fabrication of a tee as an example, the workflow of this invention will be explained in detail. The diameter is... Before the main pipe 17 and the template paper tube are joined, the outer wall of the main pipe 17 needs to be cut with the opening shown in the diagram along the intersection line, and then one end of the outer wall of the template paper tube needs to be cut with the arc shape shown in the diagram along the intersection line. These two intersection lines are irregular closed curves, varying depending on the pipe diameters of the main pipe 17 and the template paper tube, and the joining angle between the main pipe 17 and the template paper tube. Before each joining, the template paper needs to be used to repeatedly lay out and mark the lines at a 1:1 scale.

[0054] like Figure 6 and Figure 7 As shown, the operation steps of the unloading tool for pipe intersections provided by this invention are as follows:

[0055] Step 1: Make a template paper tube with the same radius as the branch pipe 18, and attach the upright 1 to the top of the outer wall of the main pipe 17 using the fastener 2;

[0056] Step 2: Adjust the horizontal rotating rod 6 to rotate it parallel to the axis of the main pipe 17. Then adjust the two vertical telescopic rods 7 so that the vertical distance from the top marking structure 16 and the bottom marking structure 15 at both ends of the telescopic inner rod 71 to the axis of the upright rod 1 is equal to the radius of the template paper tube. Lock the telescopic outer rod 72 onto the horizontal rotating rod 6 to ensure that the telescopic outer rod 72 will not move. Then adjust the tension of the elastic element 9 to a suitable value so that the telescopic inner rod 71 can slide freely up and down. Fix the adjusting rod 11.

[0057] Step 3: Adjust the support member 12 on the upright 1 so that the support member 12 can support the template paper tube;

[0058] Step 4: Adjust the top marking structure 16 and bottom marking structure 15 at both ends of the telescopic inner rod 71 so that the top marking structure 16 just touches the outer wall of the template paper tube. Then adjust the height of the telescopic outer rod 72 and the bottom marking structure 15 so that the bottom marking structure 15 just falls on the outer wall of the main pipe 17.

[0059] Step 5: Hold the horizontal rotating rod 6 and rotate it half a turn around the vertical rod 1. During the rotation, the telescopic inner rod 71 slides downward under the spring tension to ensure that the top marking structure 16 and the bottom marking structure 15 move synchronously up and down during the rotation. After the rotation is completed, a closed curve is left on the outer wall of the main pipe 17 and the template paper tube. The closed curve is the intersection line that needs to be cut before the main pipe 17 or the template paper tube is joined.

[0060] Step 6: Cut the main pipe 17 along the closed curve on the main pipe and then cut the material. Place the template paper tube on the branch pipe and cut the branch pipe along the closed curve on the template paper tube.

[0061] This device can be used to simultaneously draw the intersection lines of the main pipe 17 and the branch pipe 18. It is simple and time-saving, and more accurate than unfolding a template. One set of tools can be adjusted within a certain range to adapt to different diameters of main pipes and branch pipes and different intersection angles.

[0062] In this invention, in order to provide better support for the vertical telescopic rod 7 and prevent the vertical telescopic rod 7 from swaying, two or more horizontal rotating rods 6 can be set.

[0063] In one embodiment of the present invention, in order to detachably fix the adjusting rod 11 to the telescopic outer rod 72, the telescopic outer rod 72 is provided with a vertical second adjusting groove, and the second locking member is a locking nut. The locking nut passes through the second adjusting groove to lock the adjusting rod 11 to the telescopic outer rod 72.

[0064] In one embodiment of the present invention, a rotating ball is provided at the bottom of the upright 1, and a fixed support is detachably fixed to the main pipe 17. The fixed support is provided with a spherical groove to accommodate the rotating ball. Because the rotating ball at the bottom of the upright 1 is in spherical contact with the spherical groove on the fixed support, it can be adjusted in any direction and at any angle. The embodiment given in the present invention is a straight tee, so the upright 1 is adjusted to be perpendicular to the axis of the main pipe 17. When an oblique tee is formed between the main pipe 17 and the template paper tube, the angle of inclination between the upright 1 and the axis of the main pipe 17 is adjusted to meet the angle requirement between the main pipe 17 and the template paper tube.

[0065] The bottom of the fixed support is equipped with a magnet or screw hole.

[0066] The present invention also includes an auxiliary fixing component 2, which further includes a lifting adjustment ring 3 sleeved on the upright 1 and a third locking component for locking the lifting adjustment ring 3. The lifting adjustment ring 3 is provided with an auxiliary fixing support 5 that is detachably fixed on the main pipe 17.

[0067] The third locking component is the third locking screw. The lifting adjustment ring 3 is provided with a locking hole. The third locking screw passes through the locking hole to lock the lifting adjustment ring 3.

[0068] The auxiliary fixing support 5 is equipped with a magnet or a screw hole, such as Figure 1 As shown, the present invention is provided with 5 auxiliary fixed supports 5. The auxiliary fixed supports 5 are connected to the lifting adjustment ring 3 through diagonal braces 4. One end of the diagonal brace 4 is hinged to the auxiliary fixed support 5, and the other end is hinged to the lifting adjustment ring 3. During use, the lifting adjustment ring 3 and the 4 auxiliary fixed supports 5 are adjusted to make the auxiliary fixed supports 5 firmly fixed on the main outer wall. The 4 diagonal braces 4 fix and support the upright 1, ensuring that the upright 1 will not shake during operation.

[0069] In this invention, when the main pipe 17 is a cast iron pipe or a steel pipe, the fixed support and the auxiliary fixed support 5 are fixed to the main pipe 17 by magnets. For non-magnetic materials, such as plastic pipes, the fixed support and the auxiliary fixed support 5 can be directly fixed to the outer wall of the main pipe 17 with self-tapping screws passing through the screw holes. Since the fixed position of the fixed support and the auxiliary fixed support 5 is exactly where the waste material to be cut off will be, it will not affect the main pipe 17 after the joint. In this way, the upright 1 is attracted and fixed to the outer wall of the main pipe by the fixed support and the auxiliary fixed support 5.

[0070] In this invention, to handle the intersection of the main pipe 17 and the template paper tube of any diameter, a horizontally rotating rod 6 is provided with a horizontally adjustable groove. A vertical telescopic rod 7 is located within the first adjusting groove and can move horizontally within it, and is fixed within the adjusting groove by a first locking member 8. During use, the position of the vertical telescopic rod 7 is adjusted so that the distance between the vertical telescopic rod 7 and the upright 1 is equal to the radius of the template paper tube.

[0071] Specifically, the first locking element 8 is the first locking bolt, which passes through the first adjusting groove to lock the vertical telescopic rod 7 onto the horizontal rotating rod 6.

[0072] In this invention, to ensure stable marking of the top marking structure 16 and the bottom marking structure 15, the fixed rod 10 is fitted with a telescopic inner rod 71, the adjusting rod 11 is fitted with a second adjusting groove, and two elastic members are symmetrically arranged relative to the telescopic inner rod 71. One end of the elastic member 9 is fixed to the fixed rod 10, and the other end is fixed to the adjusting rod 11. The second locking member includes two locking nuts fitted through the adjusting rod 11, and the two locking nuts are respectively located on both sides of the telescopic inner rod 71.

[0073] In one embodiment of the present invention, both the top marking structure 16 and the bottom marking structure 15 are spring pens. The spring pen has a spring inside that can push the pen tip outward so that the pen tip can be firmly in contact with the main pipe 17 and the template paper tube.

[0074] In another embodiment of the invention, the bottom marking structure 15 is an oxygen cutter or a plasma cutter. After adjusting the distance and angle between the nozzle of the oxygen cutter or plasma cutter and the main pipe wall, while the top marking structure 16 marks the template paper tube, the opening to be cut in the main pipe 17 below is directly cut out, eliminating the need for the main pipe marking process. Of course, because the entire marking device is fixed to the main pipe wall by a fixed support and an auxiliary support, care must be taken to leave two symmetrical points with a small section uncut during the cutting process to prevent the support from collapsing or shaking.

[0075] Both the top marking structure 16 and the bottom marking structure 15 are clamped onto the telescopic inner rod 71 by the clamp 14.

[0076] In this invention, such as Figure 1 and Figure 3 As shown, the support member 12 includes a support ring fixed to the upright 1, umbrella ribs 19 provided on the support ring, and a telescopic spring steel ring 13 wrapped around the umbrella ribs 19. The umbrella ribs 19 are locked by tightening screws, and multiple latches 20 are provided on the umbrella ribs 19. The telescopic spring steel ring is threaded through multiple latches 20 like a belt. By opening the umbrella ribs 19, the length of the telescopic spring steel ring can be adjusted to facilitate the placement of the template paper tube.

[0077] In this invention, in order to provide better support for the template paper tube and prevent it from shaking, more than three support members 12 can be provided. In two adjacent support members 12, the umbrella ribs 19 can be arranged in opposite directions to improve the support for the template paper tube.

[0078] Specifically, the main pipe 17 is cut directly along the outer wall. For the branch pipe 18, the sample paper tube is first removed, and excess paper is cut along the curve of the tube wall. Then, it is placed on the outer wall of the branch pipe 18, and the curve is traced to the outer wall. Finally, the material is cut along the line. In this way, the cutting intersection line of the main pipe and the branch pipe is drawn simultaneously using this device. It is simple and time-saving, and more accurate than unfolding the template paper. One set of tools can be adjusted within a certain range to adapt to different diameters of the main pipe 17 and the branch pipe 18 and different intersection angles.

[0079] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A material feeding tool for pipe intersections, characterized in that, include: The upright has a fixing component at the bottom that can be detachably fixed to the main pipe, and the upright is rotatably connected to the fixing component; A horizontal rotating rod is sleeved on the vertical pole in the middle and can rotate about the vertical pole as the center of rotation. Two vertical telescopic rods are fixed to the horizontal rotating rod respectively. Each vertical telescopic rod includes an inner telescopic rod and an outer telescopic rod sleeved on the outside of the inner telescopic rod. The outer telescopic rod is detachably fixed to the horizontal rotating rod. The top and bottom ends of the inner telescopic rod are respectively provided with a top marking structure and a bottom marking structure. The top marking structure is used to mark lines on the template paper tube, and the bottom marking structure is used to mark lines on the main pipe. The radius of the template paper tube is the same as the radius of the branch pipe. Rotate the horizontal rotating rod half a turn to mark the intersection line of the main pipe and the template paper tube at the same time; The pulling element includes an elastic element, a fixed rod fixed to the telescopic inner rod, and an adjustable rod detachably fixed to the telescopic outer rod. One end of the elastic element is fixed to the fixed rod, and the other end is fixed to the adjustable rod. Support components, fitted onto the uprights, are used to support the template paper tube; The horizontal rotating rod is provided with a first horizontal adjusting groove, and the vertical telescopic rod is provided in the first adjusting groove and can move horizontally in the first adjusting groove and is fixed in the adjusting groove by a first locking member; The telescopic outer rod is provided with a vertical second adjustment groove, and the adjustment rod passes through the second adjustment groove and is locked to the telescopic outer rod by a second locking member.

2. The material feeding tool for pipe intersections according to claim 1, characterized in that: The bottom of the pole is provided with a rotating ball, and a fixed support is detachably fixed on the main pipe. The fixed support is provided with a spherical groove to accommodate the rotating ball.

3. The material feeding tool for pipe intersections according to claim 2, characterized in that: The bottom of the fixed support is provided with a magnet or a screw hole.

4. The material feeding tool for pipe intersections according to claim 1, characterized in that: It also includes auxiliary fixing components, which include a lifting adjustment ring sleeved on the upright and a third locking component for locking the lifting adjustment ring. The lifting adjustment ring is provided with an auxiliary fixing support that can be detachably fixed to the main pipeline.

5. The unloading tool for pipe intersections according to claim 4, characterized in that: The auxiliary fixing support is provided with a magnet or a screw hole.

6. The material feeding tool for pipe intersections according to claim 1, characterized in that: Both the top and bottom marking structures are spring-loaded markers, and each spring-loaded marker contains a spring that can push the lead outward.

7. The material feeding tool for pipe intersections according to claim 1, characterized in that: The bottom scribe structure is an oxygen cutter or a plasma cutter.

8. The material unloading tool for pipe intersections according to claim 1, characterized in that: The support includes a support ring fixed on the upright, umbrella ribs provided on the support ring, and a telescopic spring steel ring wrapped around the umbrella ribs. The umbrella ribs are locked by tightening screws.

9. A method of using a cutting tool for pipe intersections, applicable to the cutting tool for pipe intersections as described in any one of claims 1-8, characterized in that, Includes the following steps: Step 1: Make a template paper tube with the same radius as the branch pipe, and attach the upright to the top of the outer wall of the main pipe using the fastener; Step 2: Adjust the horizontal rotating rod to be parallel to the axis of the main pipe and lock it with the first locking piece. Then adjust the two vertical telescopic rods so that the vertical distance from the top and bottom marking structures of the telescopic inner rod to the axis of the upright rod is equal to the radius of the template paper tube. Lock the telescopic outer rod on the horizontal rotating rod to ensure that the telescopic outer rod will not move. Then adjust the tension of the elastic element to a suitable size to ensure that the telescopic inner rod can slide freely up and down. Fix the adjusting rod. Step 3: Adjust the support on the upright to ensure it can support the template paper tube; Step 4: Adjust the top and bottom marking structures at both ends of the telescopic inner rod so that the top marking structure just touches the outer wall of the template paper tube. Then adjust the height of the telescopic outer rod and the bottom marking structure so that the bottom marking structure just falls on the outer wall of the main pipe. Step 5: Hold the horizontal rotating rod and rotate it half a circle around the vertical rod. During the rotation, the telescopic inner rod slides downward under the spring tension to ensure that the top and bottom marking structures move up and down synchronously during the rotation. After the rotation is completed, a closed curve is left on the outer wall of the main pipe and the template paper tube. The closed curve is the intersection line that needs to be cut before the main pipe or branch pipe is joined. Step 6: Cut the main pipe along the closed curve and then cut the material. Place the template paper tube on the branch pipe and cut the branch pipe along the closed curve of the template paper tube.

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