Wireway cutting device

Abstract

The application relates to the technical field of threading pipe cutting, in particular to a threading pipe cutting device, which comprises a holding part, a pipe-shaped main body provided at one end of the holding part and provided with a threading hole for threading a pipe, a clamping mechanism arranged in the pipe-shaped main body and used for clamping the pipe, and a scissors assembly arranged on the holding part and located at one end of the pipe-shaped main body and forming an arc-shaped cutting space. The application guarantees the cutting quality through a mechanical structure, greatly reduces the dependence on the technology and experience of operators, can produce a smooth and vertical high-quality cut, and improves the installation efficiency and the aesthetic degree.

Description

Technical Field

[0001] This application relates to the technical field of conduit cutting, and in particular to a conduit cutting device. Background Technology

[0002] In building decoration, home water and electricity renovation, and network cabling, plastic conduits made of materials such as PVC and PE are widely used. During construction, it is often necessary to cut small-diameter conduits (usually 25mm or less) according to site conditions to meet installation requirements for different lengths and angles. Therefore, a convenient and efficient conduit cutting tool is particularly important.

[0003] Currently, there are two main traditional methods for cutting small-diameter plastic conduit: First, a heat gun or flame source is used to locally heat the area to be cut, softening it before quickly slicing it with a utility knife or specialized cutting tool. Second, a more direct method involves using ordinary scissors or pliers, relying on the operator's hand strength to cut directly. While these methods use readily available and simple tools, they all depend on the operator's personal experience and feel.

[0004] However, the aforementioned existing technologies have obvious drawbacks. First, whether cutting after heat fusion or cutting directly, it is difficult to guarantee the flatness and perpendicularity of the cut surface. The cut is very prone to being crooked, burrs, or dents, affecting the aesthetics of the construction. Second, irregular cuts will make it difficult to connect and install pipes, easily creating gaps, reducing sealing performance, and even hindering subsequent wiring operations, greatly reducing installation efficiency and quality. Summary of the Invention

[0005] This application provides a wire-threading pipe cutting device, which can at least partially solve the above-mentioned technical problems.

[0006] This application provides a conduit cutting device for threading, which adopts the following technical solution: A conduit cutting device for threading wires, comprising: The grip section is designed to facilitate one-handed holding. A tubular body is provided at one end of the holding part, and has a through hole for the pipe to pass through; A clamping mechanism is disposed within the tubular body for centering and clamping the pipe; The scissor assembly is located on the handle and at one end of the tubular body, forming an arc-shaped cutting space.

[0007] By adopting the above technical solution, the operator holds the handle of the device with one hand, inserts the threaded pipe to be cut from the end of the tubular body away from the scissor assembly, and makes it pass through the threading hole; operates the clamping mechanism to make it grip the pipe from the inside to achieve centering clamping (i.e., ensure that the pipe axis coincides with the device axis); maintains the grip, and then operates the scissor assembly. The scissor assembly, with its unique arc-shaped cutting space design, can rotate or shear around the clamped pipe to complete a circumferential cut. The grip provides a stable and labor-saving operating base, avoiding the risks associated with direct hand contact with the pipe or cutter. The tubular body and through-holes work together to guide and position the pipe, ensuring it is in the correct position before cutting. The centering clamping effect of the clamping mechanism reduces the pipe's tendency to roll or deviate, providing a prerequisite for obtaining a flat and vertical cut. The arc-shaped cutting space design makes the scissors' cutting trajectory an arc around the pipe, perfectly matching the pipe's circular cross-section. Compared to a straight up-and-down cutting method, it can cut the pipe more easily and thoroughly, effectively avoiding flattened or burr-like cuts. The mechanical structure ensures cutting quality, greatly reducing reliance on operator skill and experience, producing flat, vertical, high-quality cuts, and improving installation efficiency and aesthetics.

[0008] Optionally, the clamping mechanism includes a gripper, a connecting rod, a drive ring, and a drive assembly. The drive ring rotates on the tubular body. Multiple grippers are provided and are evenly spaced along the circumference of the through hole. One end of the gripper rotates inside the through hole. The other end of the gripper is connected to the connecting rod, and the other end of the connecting rod is rotatably connected to the drive ring. The drive ring is driven by the drive component.

[0009] By adopting the above technical solution, the operator rotates the drive ring, which drives multiple grippers to simultaneously contract towards the center of the through hole or expand outward through the connecting rod. When the grippers contract inward, they can evenly clamp the pipe from the inside. Multiple circumferentially spaced grippers can apply clamping force simultaneously and evenly from multiple directions, ensuring that the pipe is firmly fixed and absolutely aligned, avoiding pipe deformation or center offset caused by single-point force application. The connecting rod mechanism provides force amplification, so that a large clamping force can be generated with a small torque when rotating the drive ring, making operation easier. This clamping method is more reliable and stronger than simple elastic clamping (such as rubber rings), and is especially suitable for pipes with slightly higher hardness or smooth surfaces. The clamping will not slip, ensuring that the pipe remains stable under high shear force.

[0010] Optionally, the tubular body has an adjustment hole that communicates with the through hole, and the drive assembly includes a lever that is connected to the drive ring and slides within the adjustment hole.

[0011] By adopting the above technical solution, the operator can use their finger to move the lever, which slides within the adjustment hole, causing the connected drive ring to rotate, thereby driving the gripper to open and close. The adjustment hole limits and guides the sliding path of the lever, preventing operational errors or excessive rotation. The action of rotating the drive ring is converted into the action of linearly moving the lever, which is ergonomic, making operation more convenient and easier. The structure is simplified, and manufacturing and maintenance costs are reduced.

[0012] Optionally, the lever is slidably connected to the drive ring along the axial direction of the drive ring, and the tubular body is also provided with a plurality of snap-fit ​​grooves communicating with the adjustment hole, so that the lever can slide from the adjustment hole into the snap-fit ​​groove.

[0013] By adopting the above technical solution, when the lever is moved to the desired position (i.e., after the gripper clamps the pipe), the lever is moved axially so that it slides from the adjustment hole into the locking groove; at this time, the lever is locked, the drive ring cannot rotate, and the clamping mechanism is in a self-locking state; once clamped, the device can automatically maintain the clamping state without the operator having to exert continuous force, freeing the operator's hands and allowing them to focus more on operating the scissor assembly for cutting; this greatly improves the safety and convenience of operation, prevents pipe slippage or blade injury during cutting due to loose clamping force, and ensures reliable locking.

[0014] Optionally, the lever is provided with a hanging ring, which is adapted to fit a human finger.

[0015] By adopting the above technical solution, the operator can insert their fingers into the hanging ring to operate the lever and move it. The hanging ring design further optimizes the human-computer interaction experience. It provides a clear point of force application, making the operation more effortless and precise. Especially when working with gloves on, it can effectively prevent the hand from slipping. It also serves to prevent loss. When not in use, the finger can be put on the ring, and the tool is not easy to slip out of the hand and fall off.

[0016] Optionally, the end of the tubular body away from the scissor assembly has a cutting guide plane perpendicular to the axis of the tubular body.

[0017] By adopting the above technical solution, if the pipe wall is too thick and the scissor assembly cannot cut it, the cutting guide plane formed at the other end is used as the cutting basis to reduce the inclined cutting of the pipe and improve the cutting accuracy. For thicker or harder pipes, a saw can be used to cut them, avoiding damage to the scissor blade or flattening of the pipe. Combined with the clamping mechanism, it realizes the integration of "fixing-guiding-cutting", so that even novices can cut professional-grade vertical cuts.

[0018] Optionally, a slot is provided on the cutting guide plane, a connecting post is inserted into the slot, a cutting block is fixedly connected to the connecting post, and the end of the cutting block away from the connecting post is processed into a bevel.

[0019] By adopting the above technical solution, when angled cutting (such as 45°) is required, the vertical cutting block is pulled out; a cutting block with a bevel at one end is selected, its connecting post is inserted into the slot, and the saw blade of the hand saw is pressed tightly against the bevel of the cutting block for cutting; this achieves a huge expansion of functionality, upgrading from only vertical cutting to bevel cutting at multiple angles; making one main body adaptable to multiple cutting needs, which is very flexible and reduces the burden on users to purchase multiple special tools.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. The mechanical structure ensures cutting quality, greatly reducing reliance on operator skills and experience, and can produce flat, vertical, high-quality cuts, improving installation efficiency and aesthetics; 2. This clamping method is more reliable and secure than simple elastic clamps (such as rubber rings), and is especially suitable for pipes with slightly higher hardness or smooth surfaces. The clamping will not slip, ensuring that the pipe remains stable under high shear force. 3. It has achieved a huge expansion of functionality, upgrading from only vertical cutting to beveling at multiple angles; making one main body adaptable to a variety of cutting needs, which is very flexible and reduces the burden on users to purchase multiple special tools. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of the cutting device in the embodiments of this application; Figure 2 This is a cross-sectional view of the tubular body in the embodiments of this application; Figure 3 This is a diagram illustrating the chute in an embodiment of this application; Figure 4 This is an exploded view of the cutting block in the embodiment of this application.

[0022] Reference numerals: 100, gripping part; 200, tubular body; 210, through hole; 220, adjustment hole; 230, snap-fit ​​groove; 240, slot; 250, cutting guide plane; 260, hidden groove; 300, clamping mechanism; 310, gripper; 311, rotating groove; 320, connecting rod; 330, drive ring; 331, slide groove; 340, drive assembly; 341, lever; 342, hanging ring; 400, scissor assembly; 410, moving blade; 420, motor; 430, gear; 440, half gear; 500, cutting block; 600, connecting column. Detailed Implementation

[0023] The following combination Figures 1 to 4 This application will be described in further detail.

[0024] 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] Reference Figures 1 to 4 This embodiment provides a pipe cutting device, the core of which integrates clamping, positioning, and cutting functions. The device mainly includes a gripping part 100, a tubular body 200 connected to the gripping part 100 and used to accommodate the pipe, a clamping mechanism 300 disposed inside the tubular body 200 for fixing the pipe from the center, and a scissor assembly 400 disposed on one side for performing the cutting. The usage process can be summarized as follows: the pipe is inserted into the tubular body 200, firmly fixed and centered by the clamping mechanism 300, and then the scissor assembly 400 is operated to cleanly and neatly cut the pipe using its unique arc-shaped motion trajectory, thereby obtaining a flat and vertical cut.

[0026] The components of this embodiment will be described in detail below with reference to the accompanying drawings.

[0027] First, see Figure 1 and Figure 2 The grip 100 is designed in an ergonomic shape for easy one-handed holding and force application. Its interior may include a cavity for mounting the drive mechanism of the scissor assembly 400.

[0028] The tubular body 200 is fixedly connected to the front end of the holding part 100. A through hole 210 is provided in the central axis of the tubular body 200. The diameter of the through hole 210 is larger than the standard outer diameter of the pipe to be cut, so as to allow the pipe to pass through smoothly. The tubular body 200 houses the clamping mechanism 300. The cutting area of ​​the scissor assembly 400 is located at one end of the tubular body 200, and the other end of the tubular body 200 forms a cutting guide plane 250.

[0029] Reference Figure 2 and Figure 3The clamping mechanism 300 is crucial for ensuring pipe alignment. In this embodiment, the mechanism includes a drive ring 330 rotatably fitted inside the tubular body 200. An annular groove for the drive ring 330 to rotate is provided on the inner wall of the through hole 210. Multiple (e.g., three or four) connecting rods 320 are evenly hinged to the inner side of the drive ring 330. Corresponding to each connecting rod 320, the same number of grippers 310 are circumferentially hinged at the end away from the drive ring 330 by a pin. The inner side of the grippers 310 may be machined with teeth to increase friction. The other end of the grippers 310 is rotatably connected to the inner wall of the through hole 210. To facilitate the storage of the grippers 310, a hidden groove 260 is provided, and the grippers 310 can rotate into the hidden groove 260. This forms a rainbow bowl clamping structure: when the drive ring 330 is driven to rotate, the connecting rod 320 pushes all the grippers 310 to contract synchronously toward the center of the through hole 210 or open outward, thereby realizing the centering clamping and loosening of the pipe.

[0030] Furthermore, to facilitate the cooperation between the gripper 310 and the connecting rod 320, a rotating groove 311 is provided on the side wall of the connection end of the gripper 310 and the connecting rod 320, and the connecting rod 320 can rotate in the rotating groove 311 and be partially hidden in the rotating groove 311.

[0031] To facilitate the operation of the clamping mechanism 300, this embodiment provides a specific implementation structure of the drive component 340. The drive component 340 can be a motor 420 or a gear 430. In this embodiment, it is operated manually and includes a lever 341. An arc-shaped adjustment hole 220 is provided circumferentially on the wall of the tubular body 200. This adjustment hole 220 communicates with the internal through hole 210. One end of the lever 341 passes through this adjustment hole 220 and is connected to the drive ring 330. By moving the exposed lever 341 back and forth with a finger, the user can make it slide within the limiting path of the adjustment hole 220, thereby driving the drive ring 330 to rotate precisely and controlling the opening and closing degree of the gripper 310.

[0032] Furthermore, the connection between the lever 341 and the drive ring 330 can be achieved through axial sliding connection. Specifically, a groove 331 is provided on the drive ring 330, into which the root of the lever 341 is inserted. Simultaneously, several locking slots 230 are provided along the length of the adjustment hole 220. When the user moves the lever 341 to the position where the gripper 310 clamps the pipe, the lever 341 can be pushed axially along the device to engage its end in any of the locking slots 230. This achieves the self-locking function of the clamping mechanism 300, preventing accidental loosening of the clamping force during cutting and greatly improving operational safety.

[0033] Furthermore, a hanging ring 342 is provided at the outer end of the lever 341. The size of the hanging ring 342 is adapted to the human finger. The user can insert his / her finger into the hanging ring 342 to perform toggle and axial push and pull operations. This not only makes it more convenient and less strenuous to apply force, but also effectively prevents the tool from slipping in the hand or accidentally falling off.

[0034] The scissor assembly 400 is located at one end of the tubular body 200 near the handle 1001. It includes a movable blade 410 hinged to the tubular body 200, a motor 420, a gear 430, and a half-gear 440. The motor 420 is mounted on the tubular body 200, the gear 430 is mounted on the output shaft of the motor 420, and the half-gear 440 is fixedly connected to the movable blade 410 and meshes with the gear 430. The handle 100 is equipped with a switch; pressing the switch controls the forward and reverse rotation of the motor 420. The cutting edge of the movable blade 410 is arc-shaped, matching the outer diameter of the pipe, thus forming an arc-shaped cutting space together with the fixed blade (or the part serving as an anvil) fixed to the tubular body 200. When the user presses the switch, the movable blade 410 rotates along the arc-shaped trajectory, cleanly and precisely cutting the pipe fixed by the clamping mechanism 300 like scissors.

[0035] Furthermore, in order to protect the motor 420, gear 430 and half gear 440, a protective cover can be installed on the outside of the tubular body 200 to protect them.

[0036] Furthermore, to expand the application of this device to include not only shearing but also sawing and angled cutting, this embodiment features a special design at the end of the tubular body 200 furthest from the shear assembly 400. This end is machined to form a cutting guide plane 250 perpendicular to the axis of the tubular body 200. When encountering pipes with thick walls or hard materials that are difficult for shears to cut, the user can use a handsaw, using this cutting guide plane 250 as a reliable guide reference surface for sawing, thereby obtaining a perfect vertical cut.

[0037] Reference Figure 4 To achieve angled cutting, a slot 240 is provided on the cutting guide plane 250. A cutting block 500 is detachably inserted into this slot 240 via its lower connecting post 600. The end of the cutting block 500 away from the connecting post 600 is precision machined into a bevel at a specific angle (e.g., the commonly used 45°). When it is necessary to make a beveled pipe opening, simply select a cutting block 500 with the corresponding angled bevel, insert it into the slot 240, and then use a hand saw to cut along the bevel. Users can equip themselves with a set of cutting blocks 500 with different angles to meet various complex installation requirements.

[0038] In summary, the usage process and technical effects of this conduit cutting device are as follows: The user holds the handle 100 with one hand, inserts the conduit into the insertion hole 210, and drives the clamping mechanism 300 to firmly grip the conduit from the inside and ensure its alignment by moving and locking the lever 341. Subsequently, either by pressing the switch to use the scissor assembly 400 for rapid cutting, or by using a hand saw close to the cutting guide plane 250 or the bevel of the selected angle cutting block 500 for precise sawing; throughout the process, the conduit is firmly clamped, and the cutting has a reliable guiding reference, completely solving the problems of skewed cuts and numerous burrs caused by traditional methods; through its ingenious mechanical structure, this device significantly reduces the dependence on operator skills, greatly improves the quality and aesthetics of the cut, and enhances the efficiency of construction and installation. It is multifunctional and safe and convenient to operate.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A threading conduit cutting device, characterized by: include: The grip portion (100) is formed into a grip end that is easy to hold with one hand; A tubular body (200) is disposed at one end of the holding part (100) and has a through hole (210) for the pipe to pass through. A clamping mechanism (300) is disposed within the tubular body (200) and is used to clamp the pipe for centering. A scissor assembly (400) is disposed on the gripping part (100) and located at one end of the tubular body (200), forming an arc-shaped cutting space; The clamping mechanism (300) includes a gripper (310), a connecting rod (320), a drive ring (330), and a drive assembly (340). The drive ring (330) rotates on the tubular body (200). Multiple grippers (310) are provided and are evenly spaced along the circumference of the through hole (210). One end of the gripper (310) rotates inside the through hole (210). The other end of the gripper (310) is connected to the connecting rod (320), and the other end of the connecting rod (320) is rotatably connected to the drive ring (330). The drive ring (330) is driven by the drive assembly (340).

2. The wireway cutting device of claim 1, wherein: The tubular body (200) has an adjustment hole (220) which is connected to the through hole (210). The drive assembly (340) includes a lever (341) which is connected to the drive ring (330) and slides within the adjustment hole (220).

3. The wireway cutting device of claim 2, wherein: The lever (341) is slidably connected to the drive ring (330) along the axial direction of the drive ring (330). The tubular body (200) is also provided with a plurality of snap-fit ​​grooves (230) communicating with the adjustment hole (220). The lever (341) can slide from the adjustment hole (220) into the snap-fit ​​groove (230).

4. The conduit cutting device according to claim 2 or 3, characterized in that: The lever (341) is provided with a hanging ring (342), which is adapted to fit the human finger.

5. The conduit cutting device according to claim 1, characterized in that: The tubular body (200) has a cutting guide plane (250) perpendicular to the axis of the tubular body (200) at one end away from the scissor assembly (400).

6. The conduit cutting device according to claim 5, characterized in that: A slot (240) is provided on the cutting guide plane (250), a connecting post (600) is inserted into the slot (240), a cutting block (500) is fixedly connected to the connecting post (600), and the end of the cutting block (500) away from the connecting post (600) is processed into a bevel.

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