Water pipe cutting device

Abstract

This invention discloses a water pipe cutting device, belonging to the technical field of cutting devices. It includes a worktable, a fixing mechanism, a cutting mechanism, and a cooling mechanism. The worktable is equipped with a fixing mechanism for limiting the water pipe to be cut. The cutting mechanism is located on the worktable and used to cut the water pipe. The cooling mechanism is located on the fixing mechanism and opens and closes under the drive of the cutting mechanism to cool the cut end face of the water pipe. This application relies on a lifting box to drive a rack, gear, and bidirectional lead screw to achieve pure mechanical linkage. During cutting feed, the air collection box automatically opens to avoid the saw blade and prevent structural interference; during cutting reset, the air collection box automatically closes to surround the cut, cooperating with an air pump to complete precise cooling and chip removal. The timing of the actions precisely matches the cutting process. The all-round air cooling through an arc-shaped air blowing plate can quickly reduce the high temperature of the pipe opening, improve the cleanliness of the cut and the forming quality, eliminate the need for manual grinding and re-inspection, and significantly improve the finished product qualification rate and processing efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of cutting devices, and more specifically to a water pipe cutting device. Background Technology

[0002] In the fields of building water supply and drainage, municipal pipe networks, and industrial pipeline prefabrication, pipe cutting is a core preliminary process to ensure the quality of subsequent pipeline connections. The flatness and structural strength of the cut end face directly determine the sealing performance and assembly accuracy of welding, crimping, and hot-melt connections. Especially for metal water pipes such as galvanized steel pipes and stainless steel pipes, the high-speed friction between the saw blade and the pipe wall during the cutting process generates a large amount of cutting heat, causing the cut end face to be in a high-temperature softening state for a moment, which has multiple adverse effects on the quality of the finished product and subsequent processes.

[0003] After most water pipes are cut using a cutting device, the pipe end face retains high temperature. When the metal material is heated, its hardness decreases and its plasticity increases. During the process of pipe being led out and sliding down, the end face is very likely to collide and rub against the discharge slide and collection container, causing the pipe end to chip and the end face to tilt and deform. This directly leads to problems such as sealing failure and assembly misalignment in subsequent connection processes. Often, additional manual grinding and re-inspection processes are required, which greatly increases processing costs and production cycle. Summary of the Invention

[0004] The purpose of this invention is to provide a water pipe cutting device to overcome the above-mentioned defects in the prior art.

[0005] A water pipe cutting device includes a worktable, a fixing mechanism, a cutting mechanism, and a cooling mechanism; The workbench is equipped with a fixing mechanism for limiting the water pipe to be cut; The cutting mechanism is mounted on the workbench and is used to cut water pipes; The cooling mechanism is mounted on the fixed mechanism and opens and closes under the drive of the cutting mechanism to cool the cut end face of the water pipe after cutting.

[0006] Furthermore, the fixing mechanism includes a drive screw, a motor, a cylinder, and a support assembly. The two ends of the drive screw are rotatably connected to a fixed base on the workbench. The motor is mounted on the outside of the fixed base, and its output shaft is connected to one end of the drive screw. A movable seat is slidably connected to the fixed base via a slide rail. The movable seat is helically connected to the drive screw via a screw nut. A V-block is provided on the movable seat. The cylinder is mounted on the top of the movable seat, and a pressure plate is provided at the lower end of its piston rod. Guide rods that are slidably connected to the movable seat are provided at both ends of the pressure plate. The support assembly is located on the workbench and on the side of the fixed base.

[0007] Furthermore, the support assembly includes a second drive screw, a second movable seat, and a second motor. The two ends of the second drive screw are rotatably connected to a first support and a second support on the workbench, respectively. The second movable seat is screwed to the second drive screw via a screw nut and slidably connected to a slide rod between the first and second supports. The top of the second movable seat is provided with a second V-shaped block. The second motor is mounted on the first support and its output shaft is connected to one end of the second drive screw. The top of the second support is provided with a third V-shaped block. The two ends of the second and third V-shaped blocks are threaded with stepped studs. The same limiting plate is fixed to the two opposite stepped studs by nuts. The side of the second V-shaped block is provided with a first feeding plate, and the side of the first support is provided with a second feeding plate that communicates with the first feeding plate.

[0008] Furthermore, the cutting mechanism includes a lifting box, a second cylinder, a saw blade, and a third motor. A mounting frame is provided on the worktable. The lifting box is slidably connected to a second slide rail on the front side of the mounting frame. The second cylinder is mounted on the top of the mounting frame and its lower end is connected to the lifting box. A rotating shaft is rotatably connected in the lifting box. A worm gear on the rotating shaft meshes with a worm gear rotatably connected in the lifting box. A saw blade is mounted on the end of the rotating shaft. The third motor is mounted on the top of the lifting box and its output shaft is connected to the worm gear.

[0009] Furthermore, the cooling mechanism includes a bidirectional lead screw, an air collection box, an air blowing plate, a rack, and a gear. The bidirectional lead screw is rotatably connected to the side of the V-block three. Two air collection boxes are provided and are slidably connected to the slide rail three on the side of the V-block three and are screwed to the bidirectional lead screw through a lead screw nut. The side of the air collection box is connected to an air pump through a hose. Each air collection box has an arc-shaped air blowing plate at its top. The air blowing plate has several air blowing holes evenly distributed on it. The rack is located on the side of the lifting box and meshes with the gear installed on the bidirectional lead screw. The rack is slidably connected to the limiting sleeve on the V-block three.

[0010] Furthermore, the fixed base is provided with symmetrical support plates on both sides, and a guide wheel is rotatably connected between the two support plates.

[0011] Furthermore, a protective plate is provided between the first support and the second support, which is slidably connected to the second movable seat and located directly above the second drive screw.

[0012] Furthermore, a collection box is provided on the side of the workbench below the second feeding plate.

[0013] Furthermore, the lifting box is equipped with a protective cover on the outside of the saw blade.

[0014] The beneficial effects achieved by this invention are as follows: 1. During the cutting feed, the lowering of the lifting box drives the rack downwards, which, through gear and double-acting screw transmission, automatically opens the air collection boxes on both sides to avoid interference with the cutting path of the saw blade by the cooling mechanism. When the saw blade is lifted and reset after cutting, the rack moves upwards with the lifting box, driving the air collection boxes on both sides to automatically close, so that the arc-shaped air blowing plate closes to the outside of the cut circumference. The air pump starts synchronously to complete cooling and chip removal. The timing of the entire mechanism matches the cutting process, the structure is compact and reliable, the manufacturing cost and operating energy consumption are lower, and the contradiction between cooling accuracy and cutting avoidance is resolved.

[0015] 2. This application uses an arc-shaped air blowing plate surrounding the cut to uniformly blow air, which can rapidly cool the high-temperature pipe opening from all directions after cutting, quickly reduce the end face temperature, restore the structural strength and hardness of the pipe cut, and avoid defects such as collision chipping and end face deformation caused by high temperature softening during the unloading, sliding and collection of the pipe. This ensures that the cut is flat and intact, eliminates the need for subsequent manual grinding and re-inspection processes, and greatly improves the finished product qualification rate and processing efficiency. At the same time, the high-pressure airflow can simultaneously blow away the metal debris, slag and oxide layer attached to the cut, further improving the end face cleanliness and forming quality.

[0016] 3. The fixing mechanism and support components of this application both adopt an adjustable structure with screw drive. The support positions of V-block 1 and V-block 2 can be flexibly adjusted according to the total length of the pipe and the cutting point to ensure stable support on both sides of the cutting point. This effectively suppresses pipe vibration during the cutting process, reduces burrs and cross-sectional tilt, and reduces the risk of damage from material collisions from the source. In conjunction with the lateral limiting plate with stepped stud adjustment, the movement of the pipe can be restricted, further improving the cutting accuracy and cut perpendicularity, and adapting to the processing needs of water pipes with different diameters and lengths. Attached Figure Description

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 This is a schematic diagram of the front end of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the other end of the front side of the present invention.

[0019] Figure 3 This is a schematic diagram of the rear structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of the support component of the present invention.

[0021] Figure 5 This is a schematic diagram of the internal structure of the cutting mechanism of the present invention.

[0022] Figure 6 This is a schematic diagram of one side of the cooling mechanism of the present invention.

[0023] Figure 7 This is a schematic diagram of the other side of the cooling mechanism of the present invention.

[0024] The reference numerals in the attached drawings are explained as follows: 1. Workbench; 11. Collection box; 2. Fixing mechanism; 21. Drive screw one; 22. Fixed seat; 221. Support plate; 222. Guide wheel; 23. Motor one; 24. Moving seat one; 25. V-block one; 26. Cylinder one; 261. Pressure plate; 27. Support assembly; 271. Drive screw two; 2711. Support one; 2712. Feeding plate two; 2713. Guard plate; 272. Support two; 2721. V-block three; 273. Moving seat 2. 2731, V-block II; 274, Motor II; 275, Stepped stud; 2751, Nut; 276, Limiting plate; 277, Feeding plate I; 3. Cutting mechanism; 31, Mounting frame; 32, Lifting box; 33, Cylinder II; 34, Rotating shaft; 35, Worm gear; 36, Worm; 37, Saw blade; 371, Protective cover; 38, Motor III; 4. Cooling mechanism; 41, Double-acting lead screw; 42, Air collection box; 43, Air blowing plate; 44, Rack; 45, Gear; 46, Limiting sleeve. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] like Figure 1-7 As shown, the present invention provides a water pipe cutting device, characterized in that it includes a workbench 1, a fixing mechanism 2, a cutting mechanism 3, and a cooling mechanism 4; It should be noted that the workbench 1 is equipped with a fixing mechanism 2 for limiting the water pipe to be cut. The fixing mechanism 2 includes a drive screw 21, a motor 23, a cylinder 26, and a support assembly 27. The two ends of the drive screw 21 are rotatably connected to a fixed seat 22 on the workbench 1. The motor 23 is mounted on the outside of the fixed seat 22, and its output shaft is connected to one end of the drive screw 21. A movable seat 24 is slidably connected to the fixed seat 22 via a slide rail. The movable seat 24 is screwed to the drive screw 21 via a screw nut 2751. The movable seat 24 is provided with a V-block 25. The cylinder 26 is installed on the top of the movable seat 24 and a pressure plate 261 is provided at the lower end of its piston rod. The two ends of the pressure plate 261 are respectively provided with guide rods that are slidably connected to the movable seat 24. The fixed seat 22 is symmetrically provided with support plates 221 on both sides. A guide wheel 222 is rotatably connected between the two support plates 221, thereby providing auxiliary support and guidance for the cantilever end of the long tube. Furthermore, the support assembly 27 is mounted on the workbench 1 and located on the side of the fixed base 22. The support assembly 27 includes a second drive screw 271, a second movable base 273, and a second motor 274. The two ends of the second drive screw 271 are rotatably connected to the first support 2711 and the second support 272 on the workbench 1, respectively. The second movable base 273 is screwed to the second drive screw 271 through a screw nut 2751 and slidably connected to the slide rod between the first support 2711 and the second support 272. A guard plate 2713 is provided between the first support 2711 and the second support 272, slidably connected to the second movable base 273 and located directly above the second drive screw 271, to prevent cutting debris, metal shavings, or PVC dust from falling into the second drive screw 271 and causing jamming or wear, thereby extending the service life of the precision transmission components and reducing the maintenance frequency. In addition, the top of the second movable seat 273 is provided with a second V-shaped block 2731, the second motor 274 is mounted on the first support 2711 and its output shaft is connected to one end of the second drive screw 271, the top of the second support 272 is provided with a third V-shaped block 2721, the two ends of the second V-shaped block 2731 and the third V-shaped block 2721 are respectively threaded with stepped studs 275, and the same limiting plate 276 is fixed on the two opposite stepped studs 275 by nuts 2751. The side of the second V-shaped block 2731 is provided with a first feeding plate 277, the side of the first support 2711 is provided with a second feeding plate 2712 that communicates with the first feeding plate 277, and the side of the workbench 1 is provided with a collection box 11 below the second feeding plate 2712 to realize the collection of finished products, reduce manual intervention, and improve the continuity of the production line; In addition, the cutting mechanism 3 is mounted on the workbench 1 and is used to cut water pipes. The cutting mechanism 3 includes a lifting box 32, a second cylinder 33, a saw blade 37, and a third motor 38. The workbench 1 is provided with a mounting frame 31. The lifting box 32 is slidably connected to the slide rail 2 on the front side of the mounting frame 31. The second cylinder 33 is mounted on the top of the mounting frame 31 and its lower end is connected to the lifting box 32. A rotating shaft 34 is rotatably connected in the lifting box 32. The worm gear 35 on the rotating shaft 34 meshes with the worm 36 rotatably connected in the lifting box 32. The saw blade 37 is mounted on the end of the rotating shaft 34. The lifting box 32 is provided with a protective cover 371 on the outside of the saw blade 37 to effectively block the fragments, sparks, or entangled ribbon-like chips thrown out by the high-speed rotating saw teeth, protecting the operator from splashing injury. The third motor 38 is mounted on the top of the lifting box 32 and its output shaft is connected to the worm 36.

[0027] It is worth noting that the cooling mechanism 4 is mounted on the fixed mechanism 2. The cooling mechanism 4 includes a bidirectional lead screw 41, an air collection box 42, an air blowing plate 43, a rack 44, and a gear 45. The bidirectional lead screw 41 is rotatably connected to the side of the V-shaped block 2721. There are two air collection boxes 42, which are slidably connected to the slide rails 3 on the side of the V-shaped block 2721 and are screwed to the bidirectional lead screw 41 through a lead screw nut 2751. The side of the air collection box 42 is connected to the air pump through a hose. Each air collection box 42 has an arc-shaped air blowing plate 43 connected to its top. The air blowing plate 43 has several air blowing holes evenly distributed on it. The rack 44 is mounted on the side of the lifting box 32 and meshes with the gear 45 mounted on the bidirectional lead screw 41. The rack 44 is slidably connected to the limiting sleeve 46 on the V-shaped block 2721.

[0028] Detailed implementation methods and principles: During operation, based on the total length of the pipe and the target cutting length, start motor 274, drive drive screw 271 to rotate, drive moving seat 273 to move along slide bar, adjust the support distance between V-block 2731 and V-block 321, so that there is stable support on both sides of the cutting point, avoid pipe vibration and deformation during cutting, and adapt to the processing of water pipes of different lengths. After the support position is determined, adjust the stepped studs 275 at both ends of V-block 2731 and V-block 321 to drive the limit plates 276 on both sides to come closer together until they just contact the side wall of the water pipe, thus forming a lateral constraint on the pipe. Then the water pipe to be cut is fed in along the guide wheels 222 on both sides of the fixed seat 22 and placed on the V-shaped support surface of V-shaped block 1 25, V-shaped block 2 2731 and V-shaped block 3 2721 in sequence. The V-shaped structure automatically centers to ensure that the axis of the pipe is perpendicular to the cutting surface of the saw blade 37. After the positioning and debugging are completed, the piston rod of cylinder 26 moves vertically downward, driving the pressure plate 261 to press down smoothly, and cooperating with the V-block 25 below to clamp the water pipe; Then, motor 38 starts, and the output shaft drives worm 36 to rotate. Worm 36 drives shaft 34 and saw blade 37 to rotate at high speed and smoothly through worm wheel 35. Then, piston rod of cylinder 2 33 extends at a constant speed, pushing lifting box 32 to descend vertically and smoothly along slide rail 2. The high-speed rotating saw blade 37 gradually feeds into the water pipe. As the lifting box 32 descends, the rack 44 fixed on its side moves downwards in sync. The rack 44 slides vertically along the limiting sleeve 46 on the V-shaped block 3 2721. The downward movement of the rack 44 drives the gear 45 at the end of the bidirectional lead screw 41 to rotate, thereby driving the bidirectional lead screw 41 to rotate synchronously. When rotating, it drives the two air collection boxes 42 to move in opposite directions along the slide rail 3 and gradually separate. After cutting is completed, motor 38 stops rotating, and then the piston rod of cylinder 2 33 retracts, driving the lifting box 32 to move smoothly upward and reset along slide rail 2. The saw blade 37 is lifted and completely detached from the pipe. At the same time, rack 44 moves upward with lifting box 32, driving gear 45 to rotate in the opposite direction. The two-way lead screw 41 rotates in the same direction, driving the two air collection boxes 42 to move relative to each other along slide rail 3, automatically closing and returning to the initial avoidance position. The two arc-shaped air blowing plates 43 are exactly closed to the outer circumference of the water pipe cut, with the air blowing holes facing the cut end face. At this time, the air pump starts synchronously. Compressed air is sent into the air collection box 42 through the hose and stabilized. Then, it is directionally sprayed out from the air blowing holes evenly distributed on the air blowing plates 43: on the one hand, it cools down the high temperature cut, reducing the thermal deformation, oxide layer and burr formation of the pipe opening; on the other hand, it blows away the metal debris and slag attached to the cut. Then, the output shaft of motor 23 drives the drive screw 21 to rotate, which in turn moves the water pipe clamped on the moving seat 24 and the pressure plate 261, and guides the cut water pipe out. The finished pipe can slide out along the material feeding plate 277 on the side of V-block 2731, and after being guided by the material feeding plate 2712 on the side of support 2711, it automatically falls into the collection box 11 below the workbench 1, realizing the collection of finished products. Then the next section of water pipe to be cut can be placed in, and the above process is repeated to enter the next cutting cycle.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A water pipe cutting device, characterized in that: It includes a workbench (1), a fixing mechanism (2), a cutting mechanism (3), and a cooling mechanism (4); The workbench (1) is provided with a fixing mechanism (2) for limiting the water pipe to be cut. The cutting mechanism (3) is mounted on the workbench (1) and is used to cut water pipes; The cooling mechanism (4) is mounted on the fixing mechanism (2) and is opened and closed under the drive of the cutting mechanism (3) to cool the cut end face of the water pipe after cutting.

2. The water pipe cutting device according to claim 1, characterized in that: The fixing mechanism (2) includes a drive screw (21), a motor (23), a cylinder (26), and a support assembly (27). The two ends of the drive screw (21) are rotatably connected to a fixed seat (22) on the worktable (1). The motor (23) is mounted on the outside of the fixed seat (22), and its output shaft is connected to one end of the drive screw (21). A movable seat (24) is slidably connected to the fixed seat (22) via a slide rail. The first seat (24) is screwed to the first drive screw (21) via a screw nut (2751). The first movable seat (24) is provided with a V-block (25). The first cylinder (26) is installed on the top of the first movable seat (24) and its piston rod is provided with a pressure plate (261). The two ends of the pressure plate (261) are respectively provided with guide rods that are slidably connected to the first movable seat (24). The support assembly (27) is provided on the workbench (1) and located on the side of the fixed seat (22).

3. A water pipe cutting device according to claim 2, characterized in that: The support assembly (27) includes a second drive screw (271), a second movable seat (273), and a second motor (274). The two ends of the second drive screw (271) are rotatably connected to a first support (2711) and a second support (272) on the workbench (1), respectively. The second movable seat (273) is screwed to the second drive screw (271) through a screw nut (2751) and slidably connected to the slide rod between the first support (2711) and the second support (272). The top of the second movable seat (273) is provided with a second V-shaped block (2731). The second motor (274) is mounted on the support. The output shaft of the support (2711) is connected to one end of the drive screw (271). The top of the support (272) is provided with a V-shaped block (2721). The two ends of the V-shaped block (2731) and the V-shaped block (2721) are respectively threaded with stepped studs (275). The two opposite stepped studs (275) are fixed with the same limiting plate (276) by nuts (2751). The side of the V-shaped block (2731) is provided with a feeding plate (277). The side of the support (2711) is provided with a feeding plate (2712) that communicates with the feeding plate (277).

4. A water pipe cutting device according to claim 4, characterized in that: The cutting mechanism (3) includes a lifting box (32), a second cylinder (33), a saw blade (37), and a third motor (38). The workbench (1) is provided with a mounting frame (31). The lifting box (32) is slidably connected to the slide rail on the front side of the mounting frame (31). The second cylinder (33) is installed on the top of the mounting frame (31) and its lower end is connected to the lifting box (32). A rotating shaft (34) is rotatably connected in the lifting box (32). The worm gear (35) on the rotating shaft (34) meshes with the worm (36) rotatably connected in the lifting box (32). The end of the rotating shaft (34) is equipped with a saw blade (37). The third motor (38) is installed on the top of the lifting box (32) and its output shaft is connected to the worm (36).

5. A water pipe cutting device according to claim 4, characterized in that: The cooling mechanism (4) includes a two-way lead screw (41), an air collection box (42), an air blowing plate (43), a rack (44), and a gear (45). The two-way lead screw (41) is rotatably connected to the side of the V-shaped block three (2721). The air collection box (42) has two parts and is slidably connected to the slide rail three on the side of the V-shaped block three (2721) and is screwed to the two-way lead screw (41) through a lead screw nut (2751). The side of the air collection box (42) is connected to the air pump through a hose. Each air collection box (42) has an arc-shaped air blowing plate (43) connected to its top. The air blowing plate (43) has several air blowing holes evenly distributed on it. The rack (44) is located on the side of the lifting box (32) and meshes with the gear (45) installed on the two-way lead screw (41). The rack (44) is slidably connected to the limiting sleeve (46) on the V-shaped block three (2721).

6. A water pipe cutting device according to claim 2, characterized in that: The fixed base (22) is provided with symmetrical support plates (221) on both sides, and guide wheels (222) are rotatably connected between the two support plates (221).

7. A water pipe cutting device according to claim 3, characterized in that: A guard plate (2713) is provided between the first support (2711) and the second support (272), which is slidably connected to the second movable seat (273) and located directly above the second drive screw (271).

8. A water pipe cutting device according to claim 3, characterized in that: The side of the workbench (1) is provided with a collection box (11) below the material feeding plate (2712).

9. A water pipe cutting device according to claim 4, characterized in that: The lifting box (32) is provided with a protective cover (371) on the outside of the saw blade (37).

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