Cutting mechanism

Abstract

The application provides a cutting mechanism for cutting a pipe, the cutting mechanism comprising a first clamping assembly, the first clamping assembly comprising a guide pipe, a plurality of clamping jaws and a cutter head joint arranged in sequence in a horizontal direction, the plurality of clamping jaws being arranged at the end of the guide pipe and being arranged in sequence and spaced apart in a circumferential direction of the guide pipe to enclose a clamping space, each clamping jaw being elastically arranged; the cutter head joint is provided with a through channel, the pipe is sequentially arranged in the guide pipe and the through channel; the opening of the through channel gradually decreases from the first end to the second end of the through channel, and the first end is arranged close to the clamping jaw relative to the second end; the guide pipe is movably arranged in the horizontal direction; a cutting assembly, at least part of the cutting assembly is sleeved on the first clamping assembly, and the cutting assembly comprises a cutter head disc and a cutting knife. The application solves the problem that the existing cutting mechanism causes scratches on the surface of the copper pipe or pipe deformation when clamping the copper pipe for cutting due to the difficulty in adjusting the clamping force.

Description

Technical Field

[0001] This invention relates to the field of pipe cutting technology, and more specifically, to a cutting mechanism. Background Technology

[0002] Intelligent pneumatic tube bending machines, as key equipment in the copper tube processing field, are widely used in the manufacturing of pipes in industries such as air conditioning, refrigerators, automobiles, and medical devices. Their core function is to process copper tubes into pipe components of specific shapes through bending and cutting processes. The pre-cutting clamping mechanism of the tube bending machine reliably fixes the copper tube in the tube clamping mold when it enters the cutting station, before the cutting tool completes its cutting action, thus preventing slippage and vibration during the cutting process. Due to the high speed of the machine, even slight deviations in the copper tube can cause uneven cut surfaces, deformation of the tube ends, and significant deviations in cutting dimensions. Such substandard cut copper tubes will seriously affect subsequent processes such as bending, ringing, welding, and assembly, ultimately leading to unqualified finished products.

[0003] However, existing copper tube cutting and clamping technologies have many drawbacks:

[0004] First, the clamping force of the existing clamping mechanism needs to be determined through multi-faceted joint debugging, and the clamping force will change as the working time increases. If the clamping force is too small, the copper tube will shift with the cutting tool, causing deviation in cutting length and skewed cut; if the clamping force is too large, it will cause the copper tube to have squeezing scratches or even deformation.

[0005] Secondly, the uniformity of circumferential clamping force of the existing clamping jaws on the copper tube clamping part is difficult to guarantee, which can easily cause the thin-walled copper tube to be deformed and out of round, affecting subsequent processes. Summary of the Invention

[0006] The main objective of this invention is to provide a cutting mechanism to solve the problems in the prior art where the clamping force is difficult to adjust when cutting copper tubes, which can easily lead to scratches or tube deformation on the surface of the copper tube.

[0007] To achieve the above objectives, according to one aspect of the present invention, a cutting mechanism is provided for cutting pipe fittings, the cutting mechanism comprising:

[0008] The first clamping assembly includes a guide tube, multiple grippers and a cutter head connector arranged sequentially in a horizontal direction. The multiple grippers are located at the ends of the guide tube and are arranged at intervals in a sequential manner along the circumferential direction of the guide tube to form a clamping space. Each gripper can be flexibly set.

[0009] The cutter head connector is provided with a through channel, and the tubing is sequentially inserted into the guide tube and the through channel; from the first end to the second end of the through channel, the opening of the through channel gradually decreases, and the first end is positioned closer to the clamping jaws than the second end;

[0010] The conduit is movably arranged in the horizontal direction so that as each clamp extends into the through-channel and fits against the channel wall, the channel wall pushes each clamp toward the center of the clamping space to clamp the pipe fitting.

[0011] A cutting assembly, at least a portion of which is fitted onto a first clamping assembly, the cutting assembly including a cutting head disc and a cutting blade, the cutting blade being disposed on the cutting head disc and rotatably disposed such that the cutting end of the pipe extends out from the cutting head disc to cut the pipe by the cutting blade.

[0012] This application utilizes the cooperation of multiple elastic grippers and a conical cutter head connector to achieve radially uniform clamping through axial movement, preventing deformation and out-of-roundness of thin-walled copper tubes. Simultaneously, clamping is automatically completed via a mechanical self-tightening structure driven by a single cylinder, eliminating the need for complex linkages and additional sensors, offering advantages such as fast response speed and tight timing coordination. This stable and uniform clamping combined with high-speed rotary cutting prevents slippage and vibration of the copper tube during cutting, improving cut smoothness and dimensional accuracy, thus meeting the dual requirements of quality and efficiency in high-precision pipeline manufacturing.

[0013] Furthermore, a tapered channel section is provided at the first end of the channel. From the first end to the second end, the cross-sectional area of ​​the tapered channel section gradually decreases. As each gripper moves toward the cutter head connector, it clamps the pipe by fitting against the channel wall of the tapered channel section.

[0014] Furthermore, each gripper is provided with a guide surface, which is inclined, so that as the guide tube moves toward the cutter head connector, the guide surface fits against the wall of the channel through which it passes, thus guiding the gripper.

[0015] Furthermore, the first clamping component also includes:

[0016] The first pushing component is horizontally extendable and connected to the conduit so as to drive the conduit to move horizontally.

[0017] Furthermore, the first propulsion component includes:

[0018] A catheter drive unit, which has a piston rod;

[0019] The push plate is connected to the piston rod, and the guide tube passes through the push plate. The piston rod drives the guide tube to move through the push plate.

[0020] Furthermore, the cutting blade is movably positioned along the radial direction of the blade head disc to cut the pipe close to it or away from it.

[0021] Furthermore, the cutting component also includes:

[0022] The hobbing push rod is located inside the cutter head disc, and the cutting blade is mounted on the hobbing push rod.

[0023] The second pushing component is movably arranged along the radial direction of the cutter head disk. The second pushing component is connected to the roller push rod so as to drive the cutting blade to move through the roller push rod.

[0024] Furthermore, the cutting component also includes:

[0025] The feed sleeve is fitted onto the cutter head disc and is movably positioned along the axial direction of the cutter head disc.

[0026] The second pushing component extends out from the circumferential side of the cutter head disk. The second pushing component is provided with a wedge-shaped surface so that as the feed sleeve gradually moves towards the front end of the cutter head disk, it gradually comes into contact with the wedge-shaped surface, so that the second pushing component is pushed towards the center of the cutter head disk through the wedge-shaped surface, so that the cutting blade cuts the pipe.

[0027] Furthermore, the cutting component also includes:

[0028] The first elastic element has two ends connected to the second pushing component and the cutter head connector, respectively, so that the elastic restoring force of the first elastic element pushes the second pushing component to move away from the tube, and pushes the feed sleeve to move towards the rear end of the cutter head disc through the wedge surface.

[0029] Furthermore, the cutting component also includes:

[0030] A support component is provided on the cutter head disc, and the support component and the cutting blade are spaced apart along the circumferential direction of the cutter head disc;

[0031] The pusher rod is set inside the cutter head disc. The pusher rod is movably set along the radial direction of the cutter head disc to drive the support component to move. When the cutting blade cuts the pipe, the support component abuts against the pipe to support the pipe.

[0032] Furthermore, the cutting mechanism also includes:

[0033] The third pushing component has a retractable pushing rod, which is disposed opposite to the feed sleeve to push the feed sleeve to move.

[0034] Furthermore, the cutting component also includes:

[0035] The cutter head mandrel is fitted onto the guide tube and the cutter head connector;

[0036] A bushing is fitted onto the cutter head spindle and connected to the cutter head disc. The bushing is rotatably mounted so as to drive the cutter head disc to rotate.

[0037] Furthermore, the cutting component also includes:

[0038] Gear hobbing, fitted onto the bushing and connected to the bushing;

[0039] The drive component has a drive shaft connected to a gear hobbing device via a timing belt, which drives the shaft sleeve to rotate via the gear hobbing device.

[0040] Furthermore, the cutting mechanism also includes:

[0041] The second clamping component is located at the end of the cutting component away from the first clamping component. After the pipe extends out from the first clamping component and the cutting component, it is clamped by the second clamping component.

[0042] Applying the technical solution of this invention, this application provides a cutting mechanism for cutting pipe fittings. The cutting mechanism includes: a first clamping assembly, which includes a guide tube, multiple jaws, and a cutter head connector arranged sequentially in a horizontal direction. The multiple jaws are disposed at the ends of the guide tube and are spaced apart sequentially along the circumferential direction of the guide tube to form a clamping space. Each jaw can be flexibly positioned. The cutter head connector is provided with a through-channel, and the pipe fitting is sequentially inserted into the guide tube and the through-channel. From the first end to the second end of the through-channel, the opening of the through-channel gradually decreases. The first clamping assembly has one end positioned close to the second clamping jaws; the conduit is movably positioned in the horizontal direction so that, as each clamping jaw extends into the through-channel and abuts against the channel wall, it pushes each clamping jaw toward the center of the clamping space to clamp the pipe fitting; a cutting assembly, at least a portion of which is fitted onto the first clamping assembly, includes a cutting head disc and a cutting blade, the cutting blade being disposed on the cutting head disc and rotatably positioned such that the cutting end of the pipe fitting extends out from the cutting head disc to cut the pipe fitting by the cutting blade.

[0043] By incorporating multiple circumferentially spaced and flexibly adjustable clamps, along with a cutting head connector featuring a gradually tapering through-channel, the channel wall exerts a uniform reaction force on all clamps when the conduit moves, pushing the clamps into the channel and the clamp tips contact the conical channel wall. This structural design ensures that the clamping force on the pipe is consistent and evenly distributed in the circumferential direction, avoiding the problem of thin-walled copper pipes being deformed or out of round due to uneven clamping force. This results in higher quality subsequent processes such as bending and ringing.

[0044] This mechanism automatically completes the clamping action by using only one gripper to drive a cylinder to move the guide tube axially. The magnitude of the clamping force and the clamping state are directly determined by the cylinder's stroke, eliminating the need for complex multi-component linkage adjustments or additional positioning sensors. This self-tightening mechanical design results in a fast clamping response and close timing coordination with the cutting action.

[0045] During the cutting process, the first clamping assembly reliably clamps the copper tube in the front. Combined with the high-speed rotation of the cutter head disc in the cutting assembly and the radial feed of the cutting blade, the copper tube does not slip or vibrate during cutting. The uniform clamping force combined with the stable cutting process avoids uneven cut surfaces, slanted cuts, and tube end deformation, improving the flatness and dimensional accuracy of the cut end and meeting the requirements of high-precision pipeline manufacturing. Attached Figure Description

[0046] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0047] Figure 1 A schematic diagram of the overall structure of an embodiment of the cutting mechanism according to the present invention is shown;

[0048] Figure 2 A schematic diagram of the structure of a first clamping assembly according to an embodiment of the cutting mechanism of the present invention is shown;

[0049] Figure 3 A schematic diagram of the structure of a cutting assembly according to an embodiment of the cutting mechanism of the present invention is shown;

[0050] Figure 4 A schematic diagram of the cutter head disc according to an embodiment of the cutting mechanism of the present invention is shown;

[0051] Figure 5 A cross-sectional view showing the mating of the clamping assembly and the cutting assembly according to an embodiment of the cutting mechanism of the present invention is shown;

[0052] Figure 6 A schematic diagram showing the grippers in an open state according to an embodiment of the cutting mechanism of the present invention is shown;

[0053] Figure 7 A schematic diagram of the clamping jaws in the cutting mechanism according to the present invention is shown.

[0054] Figure 8 A schematic diagram of the gripper structure in the cutting mechanism according to the present invention is shown;

[0055] Figure 9A cross-sectional view of the cutter head connector in the cutting mechanism according to the present invention is shown.

[0056] The above figures include the following reference numerals:

[0057] 100. Pipe fittings;

[0058] 200. First clamping assembly; 201. Guide tube; 202. Gripper; 203. Cutter head connector; 204. Through channel; 205. Tapered channel section; 206. Guide surface; 207. First pushing component; 208. Guide tube drive component; 209. Push plate; 210. Clamping space;

[0059] 300. Cutting assembly; 301. Cutter head disc; 302. Cutting blade; 303. Hob pusher rod; 304. Second pushing component; 305. Feed sleeve; 306. Wedge surface; 308. Support component; 309. Push wheel pusher rod; 310. Cutter head spindle; 311. Bushing; 312. Gear hobbing; 313. Fourth pushing component; 314. Second elastic element;

[0060] 400. Third propulsion component;

[0061] 500. Second clamping assembly. Detailed Implementation

[0062] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0063] As mentioned in the background section, the clamping force of existing clamping mechanisms requires multi-faceted coordinated adjustments to determine, and the clamping force changes as the working time increases. If the clamping force is too small, the copper tube will shift with the cutting tool, causing deviations in cutting length and slanted cuts; if the clamping force is too large, it will cause squeezing scratches or even deformation of the copper tube. Secondly, it is difficult to guarantee the uniformity of the circumferential clamping force of the existing jaws on the copper tube clamping part, which can easily cause thin-walled copper tubes to be deformed and out of round, affecting subsequent processes.

[0064] Therefore, to address the aforementioned technical problems, the cutting mechanism provided in this application includes a first clamping assembly 200 comprising a conduit 201, multiple grippers 202, and a blade connector 203. The conduit 201 is movably arranged in the horizontal direction. During the process of each gripper 202 extending into the through-channel 204 and fitting against the channel wall of the through-channel 204, the channel wall pushes each gripper 202 towards the center of the clamping space 210 to clamp the pipe 100. Thus, by utilizing the change in the opening size of the through-channel 204, in conjunction with the grippers 202, the clamping and release of the pipe 100 is achieved. This arrangement allows multiple grippers 202 to clamp the pipe 100. The first clamping assembly 200 achieves a wrap-around clamping effect, ensuring uniform force on the pipe 100 and preventing deformation. Simultaneously, at least a portion of the cutting assembly 300 is fitted onto the first clamping assembly 200. The cutting assembly 300 includes a blade disc 301 and a cutting blade 302. The cutting blade 302 is mounted on the blade disc 301, which drives the cutting blade 302 to rotate. The cutting end of the pipe 100 extends from the blade disc 301, allowing the cutting blade 302 to cut the pipe 100. Thus, after the first clamping assembly 200 stably clamps the pipe 100, the cutting assembly 300 can directly cut the pipe 100.

[0065] Please refer to Figures 1 to 6 As shown, this application provides a cutting mechanism for cutting pipe fitting 100. The cutting mechanism includes:

[0066] The first clamping assembly 200 includes a guide tube 201, a plurality of grippers 202 and a cutter head connector 203 arranged sequentially in the horizontal direction. The plurality of grippers 202 are disposed at the ends of the guide tube 201 and are arranged at intervals in the circumferential direction of the guide tube 201 to form a clamping space 210. Each gripper 202 can be flexibly arranged.

[0067] The cutter head connector 203 is provided with a through channel 204, and the tube 100 is sequentially inserted into the guide tube 201 and the through channel 204; from the first end to the second end of the through channel 204, the opening of the through channel 204 gradually decreases, and the first end is positioned closer to the clamp 202 than the second end.

[0068] The conduit 201 is movably arranged in the horizontal direction so that, as each gripper 202 extends into the through channel 204 and fits against the channel wall of the through channel 204, the channel wall pushes each gripper 202 toward the center of the clamping space 210 to clamp the pipe fitting 100.

[0069] The cutting assembly 300 is at least partially sleeved on the first clamping assembly 200. The cutting assembly 300 includes a cutting head disc 301 and a cutting blade 302. The cutting blade 302 is disposed on the cutting head disc 301. The cutting head disc 301 drives the cutting blade 302 to be rotatably disposed. The cutting end of the pipe 100 extends out from the cutting head disc 301 so as to cut the pipe 100 by the cutting blade 302.

[0070] In practical implementation, the cutting mechanism achieves the cutting of the pipe fitting through the coordinated operation of the first clamping assembly 200 and the cutting assembly 300. The pipe fitting 100 passes through the through-channel 204 of the conduit 201 and the cutter head connector 203 in a horizontal direction. When the pipe fitting 100 needs to be cut, the conduit 201 moves forward in a horizontal direction under the action of the driving mechanism. As the conduit 201 moves forward, the multiple grippers 202 provided at the end of the conduit 201 move forward synchronously and gradually extend into the through-channel 204 of the cutter head connector 203.

[0071] The through-channel 204 on the cutter head connector 203 has a tapered structure with the opening gradually decreasing from the first end to the second end. When the grippers 202 enter the channel and fit against the channel wall, the contraction of the channel exerts a radial reaction force on each gripper 202. Each gripper 202 is elastically configured, and under the uniform pushing of the channel wall, the grippers 202 overcome elastic resistance and contract radially towards the center of the clamping space 210. This process allows multiple grippers 202 to synchronously and uniformly clamp the centrally located pipe fitting 100, thus stabilizing the pipe fitting in the circumferential direction.

[0072] Simultaneously or immediately after the clamping action is completed, the cutting assembly 300, fitted onto the first clamping assembly 200, begins operation. The blade disc 301 drives the cutting blade 302 thereon to rotate at high speed, while the end of the pipe 100 to be cut extends out from within the blade disc 301. The rotating cutting blade 302 contacts the stationary and firmly clamped pipe 100, thereby cutting the pipe.

[0073] The axial movement of the conduit 201 is converted into radial clamping force through the engagement of multiple elastic jaws 202 with the tapered through-channel 204. The tapered channel wall ensures that all jaws 202 are subjected to uniform radial thrust, resulting in balanced force on the pipe fitting 100 in the circumferential direction. This uniform clamping method avoids the problem of thin-walled pipe fittings being deformed or out of round due to uneven force in traditional clamping methods. The original geometry of the pipe fitting is not easily altered, which is beneficial for subsequent processing.

[0074] The first clamping assembly 200 of this application can automatically complete the clamping process through an axial movement of the guide tube 201, without the need for complex multi-component linkage debugging or additional sensor positioning. The clamping force is generated directly by the rigid contact and elastic deformation of the mechanical structure, resulting in a rapid response and stable clamping state. This design simplifies the control system, reduces equipment failure rate, and improves the overall efficiency of the cutting process.

[0075] The first clamping assembly 200 reliably and uniformly fixes the pipe 100 before cutting. Combined with the high-speed rotation cutting of the cutting assembly 300, it prevents the pipe from slipping, vibrating, or shifting during the cutting process. The stable clamping state ensures that the relative position between the cutting blade and the pipe remains constant, thereby avoiding defects such as uneven cutting surfaces, tilted cuts, or pipe end deformation. This improves the flatness and dimensional accuracy of the cut end face, meeting the requirements of high-precision pipeline manufacturing.

[0076] Specifically, such as Figures 6 to 9 As shown, a tapered channel section 205 is provided at the first end of the channel 204. From the first end to the second end, the cross-sectional area of ​​the tapered channel section 205 gradually decreases. As each gripper 202 moves toward the cutter head connector 203, it clamps the pipe fitting 100 by fitting against the channel wall of the tapered channel section 205.

[0077] In the specific implementation process, a tapered channel section 205 is specially provided at the first end of the through channel 204 on the cutter head connector 203. The structural feature of the tapered channel section 205 is that, along the direction from the first end to the second end, the cross-sectional area of ​​its channel section gradually decreases, forming a converging tapered inner wall surface.

[0078] When the conduit 201 in the first clamping assembly 200 drives multiple grippers 202 to move forward in the horizontal direction, the front ends of the grippers 202 sequentially enter and abut against the channel wall of the tapered channel section 205. As the conduit 201 continues to advance, the grippers 202 slide on the tapered inner wall of the tapered channel section 205, and the channel wall applies a radially inward compressive force to the grippers 202. Each gripper 202 is configured as an elastic structure. Under the action of this radial compressive force, the grippers 202 overcome their own elastic resistance and radially contract towards the center of the clamping space 210, thereby clamping the centrally located tube 100 and completing the clamping action.

[0079] By setting a tapered channel section 205 with a gradually decreasing cross-sectional area, when the grippers 202 enter the section axially, the tapered wall surface can uniformly convert the axial thrust of the conduit into the radial clamping force of each gripper 202. This structure ensures that the clamping force applied by the multiple grippers 202 to the pipe fitting 100 is evenly distributed in the circumferential direction, avoiding the problem of deformation or out-of-roundness of thin-walled pipe fittings caused by uneven clamping force, and ensuring the geometric accuracy of the pipe fitting.

[0080] This design achieves automatic clamping through a simple mechanical interaction (the jaws 202 contacting the inclined surface of the tapered channel section 205), eliminating the need for complex multi-component linkage mechanisms or additional sensor positioning. The single axial movement of the conduit 201 can directly drive the jaws 202 to complete the clamping, resulting in fast clamping response and tight timing, thus simplifying the control logic and mechanical structure of the equipment.

[0081] The stable radial constraint force provided by the tapered channel section 205 ensures that the pipe fitting 100 remains stationary during high-speed rotary cutting by the cutting assembly 300, without slippage or vibration. This avoids uneven cutting surfaces, tilted cuts, or burrs, improving the flatness and dimensional accuracy of the cut end face and meeting the requirements of high-precision pipe fitting manufacturing.

[0082] Specifically, each gripper 202 is provided with a guide surface 206, which is an inclined surface, so that when the guide tube 201 moves toward the cutter head connector 203, the guide surface 206 fits against the wall of the channel passing through the channel 204 to guide the gripper 202.

[0083] In the specific implementation process, each gripper 202 has a guide surface 206 on its outer surface, which is designed as a bevel structure. When the guide tube 201 moves horizontally toward the cutter head connector 203 and drives multiple grippers 202 to extend into the through channel 204, the guide surface 206 on the gripper 202 contacts and fits against the channel wall of the through channel 204.

[0084] As the conduit 201 continues to move forward, the guide surface 206 slides along the channel wall. Since the guide surface 206 is inclined, the channel wall exerts a reaction force perpendicular to the contact surface on the guide surface 206. This reaction force is decomposed into axial and radial components, with the radial component pushing each gripper 202 to overcome elastic resistance and contract radially towards the center of the clamping space 210. Through the sliding engagement between the guide surface 206 and the channel wall, a smooth transition and guidance of the grippers 202 from axial movement to radial clamping movement is achieved.

[0085] By setting the guide surface 206 with an inclined structure, the contact of the gripper 202 is smoother when sliding through the channel 204, reducing the risk of jamming due to frictional resistance. The fit between the guide surface 206 and the channel wall provides a clear movement trajectory, ensuring that the gripper 202 can retract towards the center stably and smoothly, avoiding shaking or jamming during the clamping process.

[0086] The inclined surface design of the guide surface 206 ensures that each jaw 202 can obtain a uniform radial displacement under the same axial displacement. This guarantees that all jaws 202 apply a uniform radial clamping force to the pipe fitting 100 at the same time, further improving the concentricity and stability of the clamping, and preventing the pipe fitting from deflecting or deforming due to uneven force.

[0087] As a key contact surface for mechanical transmission, guide surface 206 efficiently converts the linear motion of the guide tube into the radial clamping action of the gripper. This simple inclined guide structure not only simplifies the structural design of the gripper 202 itself, but also improves the efficiency of power transmission, making the clamping action respond quickly and helping to improve the overall production efficiency of the cutting process.

[0088] Specifically, such as Figure 2 As shown, the first clamping assembly 200 also includes:

[0089] The first pushing component 207 is provided to extend and retract in the horizontal direction. The first pushing component 207 is connected to the conduit 201 so as to drive the conduit 201 to move in the horizontal direction.

[0090] In the specific implementation process, the first clamping assembly 200 is provided with a first pushing component 207. The first pushing component 207 is horizontally extendable, and one end of it is fixedly connected to the guide tube 201. When a clamping action is required, the first pushing component 207 extends and directly pushes the guide tube 201 connected to it to move horizontally toward the cutter head connector 203.

[0091] The extension and retraction of the first pushing component 207 transmits power to the guide tube 201, which in turn drives multiple grippers 202 located at the end of the guide tube 201 to move forward synchronously, causing the grippers 202 to enter the through-channel 204 of the cutter head connector 203, thereby triggering subsequent clamping actions. When clamping is complete or release is required, the first pushing component 207 retracts, causing the guide tube 201 and grippers 202 to retract, causing the grippers 202 to disengage from the through-channel 204, thus releasing the clamps.

[0092] By incorporating a horizontally retractable first pushing component 207, the conduit 201 is directly driven to move, resulting in a short and direct power transmission path. This structure improves the stability and accuracy of the conduit 201's movement, avoiding errors or lags caused by excessive intermediate transmission links, and ensuring timely response to clamping actions.

[0093] The first driving component 207 is directly connected to the conduit 201, resulting in a simple and compact structure. Compared to complex linkage or gear transmission mechanisms, this direct drive method reduces the number of parts, lowers the mechanical failure rate, facilitates equipment maintenance, and improves the overall reliability and service life of the mechanism.

[0094] The extension and retraction stroke of the first pushing component 207 directly determines the moving distance of the conduit 201, thereby controlling the depth to which the gripper 202 extends through the channel 204. By adjusting the stroke parameters of the first pushing component 207, the magnitude of the clamping force and the closing position of the gripper can be precisely adjusted to meet the specific clamping force requirements of pipe fittings of different specifications or materials, thereby improving the adaptability and processing accuracy of the equipment.

[0095] Specifically, the first actuating component 207 includes:

[0096] The catheter drive 208 has a piston rod;

[0097] Push plate 209 is connected to piston rod, and conduit 201 is inserted through push plate 209. Piston rod drives conduit 201 to move through push plate 209.

[0098] In specific implementation, the first pushing component 207 is composed of a conduit drive component 208 and a push plate 209. The conduit drive component 208 (usually a cylinder) has a telescopic piston rod. The push plate 209 is fixedly connected to the piston rod of the conduit drive component 208 and is used to receive the thrust or pull force of the piston rod. The conduit 201 passes through the push plate 209, and the two maintain a stable relative position through a sliding fit or a guide structure.

[0099] When the conduit drive 208 operates, its piston rod extends or retracts, directly driving the push plate 209 to move horizontally. Since the conduit 201 passes through the push plate 209, the movement of the push plate 209 in turn drives the conduit 201 to perform synchronous horizontal reciprocating motion. This connection method allows the power generated by the conduit drive 208 to be smoothly and without deviation transmitted to the conduit 201, thereby driving the gripper 202 to perform clamping or releasing actions.

[0100] By setting a push plate 209 to connect the piston rod of the conduit drive 208 to the conduit 201, the push plate 209, as a rigid connecting member, can constrain the movement trajectory of the conduit 201. This structure avoids the swaying or torsion that may occur when a long rod is directly driven, ensuring that the conduit 201 makes a strictly linear movement in the horizontal direction, and guaranteeing the synchronization and centering accuracy when multiple grippers 202 enter and pass through the channel 204.

[0101] The piston rod of the conduit drive component 208 acts directly on the push plate 209, which in turn pushes the conduit 201. The power transmission path is clear and has good rigidity. This design reduces energy loss, resulting in rapid clamping response and stable force. At the same time, the push plate 209 disperses the force exerted by the piston rod on the conduit 201, avoiding stress concentration and extending the service life of the components.

[0102] The design of the conduit 201 passing through the push plate 209 creates a stable guiding connection between the conduit 201 and the push plate 209. This modular structure facilitates assembly and disassembly. When maintenance or replacement of the conduit drive 208 or the push plate 209 is required, there is no need for large-scale disassembly of the entire clamping assembly, thus improving the maintainability of the equipment.

[0103] Specifically, the cutting blade 302 is movably disposed along the radial direction of the blade disc 301 to cut the pipe 100 close to it or away from it.

[0104] In specific implementation, the cutting blade 302 in the cutting assembly 300 can move radially along the blade head disk 301. This radial movement capability allows the cutting blade 302 to extend and retract relative to the rotating blade head disk 301.

[0105] During cutting operations, the cutting blade 302 moves radially towards the pipe fitting 100 until its cutting edge penetrates the outer wall of the pipe fitting 100 for cutting. In standby or non-cutting states, the cutting blade 302 moves radially away from the pipe fitting 100, maintaining a safe distance to avoid unnecessary contact or wear. By adjusting the radial position of the cutting blade 302, the depth of the cutting blade's penetration into the pipe fitting can be precisely controlled, thus adapting to the needs of pipe fittings with different wall thicknesses.

[0106] The radially movable design of the cutting blade 302 along the blade head disc 301 allows the equipment to flexibly adjust the cutting depth of the blade into the pipe fitting. This radial adjustment mechanism allows the operator or control system to set the cutting depth according to the processing requirements of the pipe fitting 100, thereby improving the flexibility and accuracy of the processing technology.

[0107] When cutting is not required, the cutting blade 302 can be radially moved away from the pipe fitting 100, preventing it from contacting the pipe fitting surface. This non-contact state avoids accidental wear or impact to the blade during non-working periods, extends the service life of the cutting blade 302, and also reduces the risk of reduced cutting quality due to blade wear.

[0108] The radial movement design allows the cutting blade 302 to smoothly enter and exit the pipe fitting 100. During the cutting process, the radial feed works in conjunction with the rotational motion of the cutter head disk 301, contributing to a smooth cutting process and reducing vibrations caused by sudden changes in cutting resistance, thereby obtaining a smoother cut end face. Furthermore, the spaced-out design provides convenient space for loading, unloading, and positioning the pipe fitting, improving operational safety and convenience.

[0109] Specifically, such as Figure 4 As shown, the cutting assembly 300 also includes:

[0110] The hobbing push rod 303 is set inside the cutter head disc 301, and the cutting blade 302 is set on the hobbing push rod 303;

[0111] The second pushing component 304 is movably disposed along the radial direction of the cutter head disk 301. The second pushing component 304 is connected to the roller push rod 303 so as to drive the cutting blade 302 to move through the roller push rod 303.

[0112] In specific implementation, the cutting assembly 300 is provided with a roller pusher 303 inside, which is located inside the cutter head disk 301, and the cutting blade 302 is fixedly mounted on the roller pusher 303. At the same time, the cutting assembly 300 also includes a second pushing component 304, which is also movably arranged along the radial direction of the cutter head disk 301.

[0113] The second pushing component 304 is connected to the roller cutter pusher 303. When the second pushing component 304 moves radially, it directly drives the roller cutter pusher 303 to move synchronously. Since the cutting blade 302 is mounted on the roller cutter pusher 303, the movement of the roller cutter pusher 303 in turn drives the cutting blade 302 to move radially closer to or away from the pipe fitting 100, thereby realizing the cutting or retraction action on the pipe fitting 100. This structure, through the series connection of the second pushing component 304, the roller cutter pusher 303, and the cutting blade 302, realizes the transmission of radial feed power.

[0114] By directly driving the roller push rod 303 through the second pushing component 304, the cutting blade 302 is moved radially. This structure can precisely control the depth and position of the cutting blade 302 cutting into the pipe fitting 100, enhancing the stability and consistency of the cutting process and avoiding cutting errors caused by transmission gaps or elastic deformation.

[0115] By placing the hobbing rod 303 inside the cutter head disk 301, the cutting drive mechanism can be housed within the rotating component, making full use of the space on the cutter head disk. This embedded layout not only makes the overall structure more compact and reduces the external space occupied by the equipment, but also helps maintain dynamic balance and improves stability during high-speed rotation.

[0116] The direct connection between the second pushing component 304 and the roller push rod 303 allows the radial thrust to be transmitted to the cutting blade 302 without loss. During the cutting process, this stable force transmission mechanism helps to resist cutting reaction forces and prevents the cutting blade 302 from shifting or vibrating, thereby ensuring the flatness and perpendicularity of the cut surface and improving the cutting quality.

[0117] Specifically, the cutting assembly 300 also includes:

[0118] The feed sleeve 305 is sleeved on the cutter head disc 301 and is movably arranged along the axial direction of the cutter head disc 301.

[0119] The second pushing component 304 extends out from the circumferential side of the cutter head disk 301. The second pushing component 304 is provided with a wedge-shaped surface 306 so that as the feed sleeve 305 gradually moves towards the front end of the cutter head disk 301, it gradually comes into contact with the wedge-shaped surface 306, so that the second pushing component 304 is pushed towards the middle of the cutter head disk 301 through the wedge-shaped surface 306, so that the cutting blade 302 cuts the pipe 100.

[0120] In specific implementation, the cutting assembly 300 also includes a feed sleeve 305, which is sleeved on the outer periphery of the cutter head disk 301 and is movably arranged along the axial direction of the cutter head disk 301. The second pushing member 304 extends out of the circumferential side of the cutter head disk 301, and its surface is provided with a wedge-shaped surface 306.

[0121] When a cutting operation is required, the feed sleeve 305 gradually moves towards the front end of the cutter head disc 301 (i.e., towards the cutting end of the pipe fitting 100) under drive. As the feed sleeve 305 moves forward, its inner wall surface gradually comes into contact with the wedge-shaped surface 306 on the second pushing member 304. Due to the inclined design of the wedge-shaped surface 306, the axial movement of the feed sleeve 305 is converted into a radial thrust on the second pushing member 304 through the wedge-shaped surface 306.

[0122] Under this thrust, the second pushing component 304 overcomes resistance and moves toward the center of the cutter head disk 301 (i.e., radially inward). Since the second pushing component 304 is connected to the roller push rod 303, it drives the cutting blade 302 to move radially toward the center, ultimately causing the cutting blade 302 to cut into the pipe fitting 100 and complete the cutting action.

[0123] By setting the cooperation between the feed sleeve 305 and the wedge surface 306, the linear axial motion of driving the feed sleeve 305 is efficiently and smoothly converted into the radial motion of the second pushing component 304. The inclined surface design of the wedge surface 306 acts as a lever or inclined surface amplification, ensuring the stable transmission of radial propulsion force and avoiding the jamming or instability that may occur with direct radial drive.

[0124] The movement of the feed sleeve 305 and the radial feed of the cutting blade 302 are rigidly connected by a mechanical structure, reducing lag and error in the intermediate transmission links. When the feed sleeve 305 begins to move, the cutting blade 302 responds immediately and feeds into the pipe fitting 100. This coordination enables a rapid response to the cutting action and improves production efficiency.

[0125] This design utilizes the geometry of the wedge-shaped surface 306 to achieve motion transformation, enabling precise radial feed without the need for complex cam mechanisms or additional sensor feedback. This mechanically self-locking or self-guiding structure simplifies the internal construction of the cutting assembly 300, reduces manufacturing costs and assembly difficulty, while improving system reliability and durability.

[0126] Specifically, the cutting assembly 300 also includes:

[0127] The first elastic element has two ends connected to the second pushing component 304 and the cutter head connector 203, respectively, so that the second pushing component 304 is pushed away from the tube 100 by the elastic restoring force of the first elastic element, and the feed sleeve 305 is pushed towards the rear end of the cutter head disc 301 by the wedge surface 306.

[0128] In the specific implementation process, the cutting assembly 300 is provided with a first elastic element. The two ends of the first elastic element are respectively connected to the second pushing component 304 and the cutter head connector 203. When the cutting action is completed or when the cutter needs to be retracted, the feed sleeve 305 stops moving towards the front end of the cutter head disk 301 or begins to retract. At this time, the first elastic element uses its stored elastic potential energy to generate an elastic restoring force.

[0129] The elastic restoring force acts directly on the second pushing component 304, pushing it to overcome resistance and move away from the pipe fitting 100 (i.e., radially outward). Since the second pushing component 304 is provided with a wedge-shaped surface 306, and the feed sleeve 305 is in contact with the wedge-shaped surface 306, the radial outward movement of the second pushing component 304 is converted into an axial thrust on the feed sleeve 305 through the interaction of the wedge-shaped surface 306, thereby pushing the feed sleeve 305 toward the rear end of the cutter head disc 301, completing the retraction and reset action.

[0130] By incorporating a first elastic element, the elastic restoring force automatically drives the second pushing component 304 and the feed sleeve 305 back to their initial positions. This design achieves automatic tool retraction after cutting, eliminating the need for an additional reverse drive mechanism or complex control signals to perform the retraction action. This simplifies the equipment's control system and mechanical structure, and reduces energy consumption.

[0131] The restoring force provided by the first elastic element ensures a stable power source for the second pushing component 304 and the feed sleeve 305 during the tool retraction process. Combined with the guiding effect of the wedge surface 306, this results in a smooth and unobstructed retraction process, preventing reset failures caused by gravity or friction, and improving the reliability and cycle efficiency of the equipment.

[0132] The automatic retraction mechanism ensures that the cutting blade 302 quickly moves away from the pipe fitting 100 when not in use, avoiding unnecessary contact or friction between the blade and the pipe fitting. This not only protects the sharpness of the cutting blade 302 and reduces wear, but also prevents damage to the blade caused by chip accumulation or adhesion, thereby extending the tool's service life and maintaining cutting quality.

[0133] Specifically, the cutting assembly 300 also includes:

[0134] A support component 308 is disposed on the cutter head disc 301, and the support component 308 and the cutting blade 302 are spaced apart along the circumferential direction of the cutter head disc 301.

[0135] The pusher rod 309 is disposed inside the cutter head disc 301. The pusher rod 309 is movably disposed along the radial direction of the cutter head disc 301 to drive the support member 308 to move. When the cutting blade 302 cuts the pipe 100, the support member 308 abuts against the pipe 100 to support the pipe 100.

[0136] In specific implementation, the cutting assembly 300 also includes a support member 308, which is disposed on the cutter head disk 301 and spaced apart from the cutting blade 302 along the circumferential direction of the cutter head disk 301. Simultaneously, the cutting assembly 300 also includes a pusher rod 309, which is located inside the cutter head disk 301 and is movably disposed in the radial direction. The pusher rod 309 is connected to the support member 308 and is used to drive the support member 308 to move radially.

[0137] When the cutting blade 302 moves towards the pipe fitting 100 to perform a cutting operation, the pusher rod 309 moves synchronously, driving the support component 308 to move radially towards the pipe fitting 100. The support component 308 moves until it abuts against the outer wall surface of the pipe fitting 100, thereby supporting and fixing the pipe fitting 100.

[0138] This supporting effect occurs at or before the cutting blade 302 enters the pipe fitting 100, ensuring that the pipe fitting 100 receives effective rigid support near the cutting force point, and preventing the pipe fitting from deforming or vibrating due to the cutting reaction force.

[0139] By providing support component 308 to abut against the pipe fitting 100 during the cutting process, the radial cutting force generated by the cutting blade 302 is prevented from affecting the pipe fitting 100. This support prevents the thin-walled pipe fitting from undergoing elastic deformation or localized depression in the cutting area, thereby ensuring the flatness and perpendicularity of the cut end face and avoiding cut deformation or burr formation.

[0140] The support component 308 and the cutting blade 302 are spaced apart circumferentially, forming a stable mechanical support structure. During cutting, the pipe 100 is firmly supported near the cutting point, reducing vibration and chatter of the pipe during high-speed rotational cutting, improving the smoothness of the processing, helping to extend tool life and improve processing accuracy.

[0141] The support component 308 is driven by the pusher wheel and push rod 309, and is linked to the feed action of the cutting blade 302. This integrated design allows the support action and the cutting action to be carried out synchronously and in coordination, without the need for an additional independent drive device, thus simplifying the mechanical structure. At the same time, the rational layout of the support component 308 and the cutting blade 302 within the cutter head disc 301 makes full use of the internal space, achieving a unity of functional integration and structural compactness.

[0142] The cutting assembly 300 further includes a fourth pushing component 313 and a second elastic member 314. The fourth pushing component 313 and the second pushing component 304 are spaced apart along the circumference of the cutter head disk 301. The fourth pushing component 313 is connected to the pusher rod 309, and the two ends of the second elastic member 314 are respectively connected to the fourth pushing component 313 and the cutter head connector 203. In specific implementation, two support components 308 are provided. The two support components 308 and the cutting blade 302 are evenly arranged on the blade head disc 301 at intervals. The four pushing components 313 are correspondingly provided in two form. The fourth pushing component 313 is a wedge block. The second pushing component 304 is also a wedge block. After the cutting is completed, the third pushing component 400 retracts and uses the elastic restoring force of the first elastic element and the second elastic element 314 to push each wedge block to move radially. This causes each wedge block to simultaneously push the feed sleeve 305 to move to the initial position, so that the roller push rod 303 and the cutting blade 302 on it, as well as the push wheel push rod 309 and the support component 308 on it, simultaneously move away from the cut pipe 100.

[0143] Specifically, the cutting mechanism also includes:

[0144] The third pushing component 400 has a retractable pushing rod, which is disposed opposite to the feed sleeve 305 so as to push the feed sleeve 305 to move by means of the pushing rod.

[0145] In specific implementation, the cutting assembly 300 also includes a third pushing component 400. This third pushing component 400 has a retractable pushing rod, the end of which is positioned opposite to the feed sleeve 305, maintaining contact or direct connection between them. The third pushing component 400 is a drive cylinder; when a cutting operation is required, the third pushing component 400 operates, its pushing rod extending axially to directly apply thrust to the feed sleeve 305, pushing the feed sleeve 305 to move along the axial direction of the cutter head disk 301 towards the front end of the cutter head disk 301.

[0146] As the feed sleeve 305 moves forward, it drives the second pushing component 304 to move radially inward through the aforementioned wedge-shaped surface 306 mechanism, thereby causing the cutting blade 302 to cut into the pipe fitting 100. When the cutting is completed or the blade needs to be retracted, the pushing rod of the third pushing component 400 retracts, releasing the thrust on the feed sleeve 305, and the restoring force of the first elastic element causes the feed sleeve 305 to return to its original position.

[0147] By setting a third pushing component 400 and its pushing rod to act directly on the feed sleeve 305, a direct and powerful axial thrust is provided for the cutting action. This driving method can overcome the large cutting resistance generated during the cutting process, ensuring that the feed sleeve 305 can still advance smoothly and reliably under high-speed rotation and heavy load conditions, thus guaranteeing the continuity and stability of the cutting process.

[0148] The third driving component 400 directly drives the feed sleeve 305, reducing intermediate transmission links. This direct drive structure minimizes the power transmission path and maximizes the response speed, enabling rapid feeding and retraction of the cutting blade 302, thus improving the equipment's efficiency and automation level.

[0149] The extension and retraction stroke of the third pushing component 400 directly corresponds to the moving distance of the feed sleeve 305, thereby controlling the cutting depth. By controlling the action parameters of the third pushing component 400, the feed rate of the cutting tool 302 can be adjusted to meet the cutting depth requirements of different processing techniques, thus improving processing accuracy and consistency.

[0150] Specifically, the cutting assembly 300 also includes:

[0151] The cutter head spindle 310 is sleeved on the guide tube 201 and the cutter head connector 203;

[0152] A bushing 311 is sleeved on the cutter head spindle 310 and connected to the cutter head disc 301. The bushing 311 is rotatably configured so as to drive the cutter head disc 301 to rotate.

[0153] In specific implementation, the cutting assembly 300 also includes a cutter head spindle 310 and a bushing 311. The cutter head spindle 310 is sleeved on the guide tube 201 and the cutter head connector 203, serving to support and position the internal components. The bushing 311 is sleeved on the outside of the cutter head spindle 310 and is fixedly connected to the cutter head disc 301. The bushing 311 is rotatably mounted on the cutter head spindle 310 or the frame support structure via a rotating fit structure such as bearings.

[0154] When the motor or other drive source is working, the power is transmitted to the bushing 311, and the bushing 311 rotates accordingly, which in turn drives the cutter head disk 301 fixedly connected to it to rotate at high speed around the axis, thereby driving the cutting blade 302 mounted on the cutter head disk 301 to perform cutting operations.

[0155] By setting the fit between the cutter head spindle 310 and the bushing 311, a stable rotational support center is provided for the cutter head disk 301. The bushing 311, as a transmission component, smoothly transmits external power to the cutter head disk 301, improving the concentricity and stability of the cutter head disk 301 during high-speed rotation and reducing vibration and runout.

[0156] The cutter head spindle 310 is sleeved on the internal tubing and cutter head connector 203, serving to separate and support the complex internal components. This layered sleeved structure allows for a reasonable spatial distribution of rotating components (such as the bushing 311 and the cutter head disc 301) and stationary or axially moving components (such as the cutter head connector 203 and the internal conduit), avoiding motion interference and facilitating a compact design of the equipment's internal structure.

[0157] The rotatable design of the bushing 311, typically used in conjunction with a bearing, reduces rotational friction resistance and ensures smooth rotation of the cutter head disc 301. This structure helps maintain the dynamic balance of the cutting blade 302 under high-speed rotation, improving cutting accuracy while reducing wear on components caused by vibration, thus extending the overall service life of the cutting assembly 300.

[0158] Specifically, the cutting assembly 300 also includes:

[0159] The gear hobbing 312 is sleeved on the bushing 311 and connected to the bushing 311;

[0160] The drive component has a drive shaft connected to the gear hobbing 312 via a timing belt, so as to drive the shaft sleeve 311 to rotate via the gear hobbing 312.

[0161] In specific implementation, the cutting assembly 300 also includes a hobbing gear 312. The hobbing gear 312 is fitted onto and fixedly connected to the bushing 311, allowing the hobbing gear 312 to rotate synchronously with the bushing 311. The device also includes a drive component with a drive shaft. The drive shaft of the drive component is connected to the hobbing gear 312 via a synchronous belt. When the drive component operates, its drive shaft rotates, driving the hobbing gear 312 to rotate via the synchronous belt.

[0162] The gear hobbing 312 is connected to the bushing 311, and the rotation of the gear hobbing 312 drives the bushing 311 to rotate. The bushing 311 then drives the cutter head disc 301 and the cutting blade 302 mounted on the cutter head disc 301 to rotate at high speed, thereby realizing the cutting operation of the pipe fitting 100.

[0163] The drive shaft of the drive component is connected to the gear hobbing 312 by a synchronous belt. Compared with direct gear meshing, synchronous belt drive has better buffering and vibration absorption performance. This can reduce noise and vibration during transmission, improve the stability of the cutter head disc 301 during high-speed rotation, and thus improve the surface finish of the cut end.

[0164] Synchronous belt drives have a certain degree of elasticity. When encountering abnormal resistance or overload during the cutting process, the synchronous belt may slip, thus preventing damage to key components such as the drive unit, gear hobbing 312, bushing 311, and cutter head disc 301 due to overload. This characteristic provides safety protection and improves the reliability and durability of the equipment.

[0165] Synchronous belt drives have relatively low requirements for the precision of the installation center distance, allowing for a certain degree of installation error and simplifying the assembly process. Furthermore, if the synchronous belt wears or breaks, replacement is convenient, eliminating the need to disassemble a complex gearbox or adjust precise gear meshing clearances, thus reducing equipment maintenance costs and downtime.

[0166] Specifically, the cutting mechanism also includes:

[0167] The second clamping component 500 is located at the end of the cutting component 300 away from the first clamping component 200. After the pipe 100 extends out from the first clamping component 200 and the cutting component 300, it is clamped by the second clamping component 500.

[0168] In the specific implementation process, the cutting assembly 300 also includes a second clamping assembly 500. The second clamping assembly 500 is disposed at the end of the cutting assembly 300 away from the first clamping assembly 200. In the processing flow, one end of the pipe 100 is first clamped and fixed by the first clamping assembly 200, and then the main body of the pipe 100 passes through the first clamping assembly 200 and extends to the cutting assembly 300.

[0169] The cutting assembly 300, including its blade disc 301, extends from the other end of the pipe fitting 100 to perform the cutting operation. Before or during the cutting action, the second clamping assembly 500 clamps and fixes the portion of the pipe fitting 100 extending from the cutting assembly 300. Through the cooperation of the first clamping assembly 200 and the second clamping assembly 500, the pipe fitting 100 is firmly constrained in both directions, thereby maintaining a stationary state during the cutting process.

[0170] By setting a second clamping component 500 to clamp the protruding end of the pipe fitting 100, a bidirectional constraint is formed with the first clamping component 200. This layout restricts the axial displacement and movement of the pipe fitting 100 under the action of cutting force, ensuring accurate cutting position, thereby ensuring the accuracy of the cutting length and avoiding dimensional deviations.

[0171] The second clamping assembly 500 works in conjunction with the first clamping assembly 200 to increase the support span of the pipe fitting 100. When the cutting blade 302 rotates at high speed and cuts into the pipe fitting, the bidirectional clamping can significantly suppress the vibration and sway of the pipe fitting 100, improve the stability of the processing, and thus improve the flatness and quality of the cut end face.

[0172] This structural design enables the equipment to handle longer pipe fittings 100 or those requiring specific clamping methods. By clamping at both ends, it solves the deformation or vibration problems caused by the cantilever beam effect that may result from single-end clamping, expanding the processing range of the equipment and improving its adaptability to pipe fittings of different specifications.

[0173] In this application, a limiting boss or a stop is provided on the second pushing component 304 and the fourth pushing component 313. The limiting boss or the stop is located at the end of the wedge surface 306 that is close to the front end of the cutter head disk 301, that is, the higher end of the wedge surface 306. The limiting boss or the stop is provided at the higher end to prevent the feed sleeve from moving forward and passing over the wedge block, thus preventing it from being unable to reset.

[0174] As the feed sleeve 305 moves forward under the push of the third pushing member 400, it contacts the wedge-shaped surface 306 and pushes the second pushing member 304 radially. With the deepening of the feed action, the feed sleeve 305 continues to advance until it reaches the highest point of the wedge-shaped surface 306. At this point, the feed sleeve 305 is blocked by a limiting boss or stop, thus stopping its forward movement. This limiting structure ensures that the feed sleeve 305 will not cross the highest point of the wedge-shaped surface 306 into an ineffective region or cause interference.

[0175] By setting a limiting boss or a stop plate, a mechanical stop point is provided for the axial movement of the feed sleeve 305. This prevents the feed sleeve 305 from exceeding the highest point of the wedge surface 306 due to excessive drive, thereby controlling the maximum cutting depth of the cutting blade 302, avoiding the pipe fitting 100 from being cut off or damaged due to overcutting, and ensuring the consistency of cutting dimensions.

[0176] The limiting boss or baffle restricts the movement range of the feed sleeve 305, ensuring it always remains within the effective working range of the wedge surface 306. When the third pushing component 400 retracts, the feed sleeve 305 can smoothly slide down and reset along the wedge surface 306 under the action of the first elastic element. If the feed sleeve 305 exceeds the highest point, it may fail to reset smoothly due to structural interference or changes in the force angle. This limiting structure effectively avoids such failures and improves the reliability of the equipment's cyclic operation.

[0177] This mechanical limiting structure serves as a final safety measure. Even if the electronic control system malfunctions and causes the drive component to extend excessively, it can mechanically prevent the feed sleeve 305 from moving further, protecting the internal components of the equipment from damage and improving the safety of equipment operation.

[0178] The cutting mechanism provided in this application can adjust the clamping force by the stroke of the cylinder or by changing the gripper 202, and can be applied to the processing of pipe fittings of different materials. The structure is simple. The clamping component is driven by the drive component, which forces the gripper 202 to squeeze and clamp the pipe fitting 100 radially. The clamping force of the gripper 202 is uniform and stable. At the same time, it works with the clamping mold on the other side of the tool to fix and clamp the copper pipe. The cutting action is smooth and uniform.

[0179] The process employs a sequence of first cutting (but not completely severing), then bending, and finally pulling apart. During cutting, the cutter ensures that the feed depth is limited to a single straight cut on the pipe without completely severing it. After bending, a clamping die is used for pulling apart, thus ensuring that the cut does not tilt. The timing of the clamping and cutting actions is closely coordinated. After the gripper push cylinder (first push component 207) pushes the gripper 202 to clamp the copper pipe, the feed push cylinder (third push component 400) immediately pushes the cutter radially to complete the copper pipe cutting action. After cutting is completed, the gripper push cylinder returns to its original working position. The entire process is fast-responding, simple, and efficient.

[0180] like Figure 1 As shown, during the cutting process, the first clamping component 200 and the second clamping component 500 simultaneously clamp and fix the front and rear ends of the pipe fitting 100, and then the cutting component 300 cuts the middle part of the pipe fitting.

[0181] like Figure 2As shown, after the pipe fitting 100 is fed to the cutting position by the mechanism, the gripper fixed on the frame drives the cylinder to work through signal control, pushing the push plate 209 and the guide tube 201 to move forward together, and finally pushing the gripper 202 in the center of the cutting assembly forward. Due to the special structural design of the gripper, it contracts to clamp the copper pipe.

[0182] like Figure 3 As shown, the cutter head spindle 310 of the cutting assembly 300 is fixed on the frame. The motor drives the gear hobbing 312 to rotate at high speed, thereby causing the bushing 311 and the cutter head disc 301 and its accessories to rotate at high speed. Previously, while the first pushing component 207 was working, the second pushing component 304, which was fixed on the frame, also started to work under signal control, thereby clamping the rear end of the pipe fitting 100 at the same time.

[0183] like Figure 4 As shown, and in combination Figure 3 and Figure 5 The schematic diagram shows that the feed sleeve 305 moves towards the cutter head. The cutting blade 302 and the support component 308, initially in a relaxed state under the action of the second push component 304 and the first elastic element, are continuously pressed radially against the cutter bar slider, push wheel slider, and their internal springs during the feed sleeve's movement towards the cutter head due to the wedge-shaped structure design on the outer surface of the slider. This, in turn, pushes the roller push rod 303 (one) and the push wheel push rod 309 (two) on the cutter head disc to move radially towards the axis. Ultimately, this causes the cutting blade 302 on the roller push rod and the support component 308 on the push wheel push rod to rotate while simultaneously moving radially inward to complete the copper tube cutting. Throughout the entire cutting process, the stroke of the cylinder directly determines the displacement of the cutting blade and the two bearings towards the axis. Therefore, by controlling the stroke of the cylinder, the cutting blade can be controlled to complete the cutting of the copper tube to the desired depth, greatly simplifying subsequent installation and debugging work.

[0184] Because the cutter head disc 301 rotates at high speed during the cutting process, if the pipe fitting 100 cannot be clamped and fixed during the cutting process, the copper pipe will vibrate and shift during cutting, resulting in an uneven cut end face. Through the combination of the mechanism's motion design, the specific structural design of the grippers, and the internal structural design of the cutter head assembly, the pre-cutting clamping requirements of the copper pipe can be met.

[0185] like Figure 5 As shown, the bushing 311 is mounted on the cutter head spindle 310, ensuring that it and the cutter head disc can only rotate stably around the axis. The central copper tube passes directly through the jaws 202 and the cutter head connector 203 and contacts them. When the jaw push cylinder pushes the connecting rod and jaws inserted into the cutter head assembly forward, as shown... Figure 5The structure of the gripper and connector shown is such that, due to the front-end cut-type structure of the gripper, when its front end moves to contact the conical inclined surface of the cutter head connector, the front end of the gripper is squeezed by the reaction force of the conical surface, and the end is forced to contract inward, thereby playing the role of clamping and holding the copper tube tightly, effectively avoiding the burrs on the cut caused by the "floating" of the copper tube before cutting.

[0186] This clamping linkage mechanism eliminates the need for complex multi-component linkages, achieving uniform clamping of copper tubes before cutting solely through a single cylinder. This meets the design requirements of simple structure and fast response (clamping is completed as soon as the cylinder reaches the end of its set stroke). The beveled engagement between the gripper and the cutter head directly links the "gripper advance distance" and "clamping force," eliminating the need for additional positioning sensors (such as laser rangefinders). Only the calculation and adjustment of the gripper cylinder stroke are required. Positioning is achieved through rigid contact of the mechanical structure (e.g., matching the bevel angle of the cutter head with the gripper cutting angle to ensure axial positional accuracy of the pipe during cutting), reducing the complexity of the control system (addressing the need to "reduce positioning error" in the problem of "poor coordination between positioning and clamping").

[0187] After the pipe fitting is cut, the cylinder retracts its stroke, pulling the gripper back. The tapered bevel of the cutter head connector 203 disengages from the gripper's cut, and the gripper's front end loses radial reaction force. The cut end of the gripper opens under its own elasticity (or a return spring, not shown in the figure), releasing the copper pipe and entering the next feeding-clamping-cutting cycle. This automatic return of the gripper 202 to its original shape under its own elastic force achieves "powerless release," avoiding the complex structure that relies on cylinder reverse drive or spring return, reducing energy loss and the risk of failure.

[0188] Through the above structural design, the pre-cutting clamping mechanism and the cutter head assembly achieve integrated operation of "mechanical self-tightening clamping - precise positioning - high-speed coordination", effectively solving the problems in the background technology such as "difficulty in controlling the clamping force, difficulty in ensuring the uniformity of clamping force, and poor coordination of working sequence", providing a stable and efficient pre-cutting guarantee for copper tube cutting.

[0189] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0190] This application provides a cutting mechanism for cutting a pipe fitting 100. The cutting mechanism includes a first clamping assembly 200, which includes a conduit 201 arranged sequentially in a horizontal direction, a plurality of grippers 202, and a cutting head connector 203. The plurality of grippers 202 are disposed at the ends of the conduit 201 and are arranged at intervals along the circumferential direction of the conduit 201 to form a clamping space 210. Each gripper 202 is elastically configurable. The cutting head connector 203 is provided with a through-channel 204, and the pipe fitting 100 is sequentially inserted into the conduit 201 and the through-channel 204. From the first end to the second end of the through-channel 204, the opening of the through-channel 204 gradually decreases, and the first end is closer to the clamp than the second end. The clamps 202 are configured; the guide tube 201 is movably configured in the horizontal direction so that, as each clamp 202 extends into the through channel 204 and fits against the channel wall of the through channel 204, the clamps 202 are pushed by the channel wall to move towards the center of the clamping space 210 to clamp the pipe fitting 100; the cutting assembly 300, at least a portion of which is sleeved on the first clamping assembly 200, the cutting assembly 300 includes a blade disc 301 and a cutting blade 302, the cutting blade 302 is configured on the blade disc 301, the blade disc 301 drives the cutting blade 302 to be rotatably configured, the cutting end of the pipe fitting 100 extends out from the blade disc 301 so that the pipe fitting 100 is cut by the cutting blade 302.

[0191] By incorporating multiple circumferentially spaced and flexibly adjustable clamps, along with a tapered cutting head connector that passes through a gradually narrowing channel, the channel wall applies a uniform radial compressive force to all clamps as the conduit moves and pushes the clamps into the channel. This structural design ensures that the clamping force on the pipe is consistent and evenly distributed in the circumferential direction, avoiding the problem of thin-walled copper pipes being deformed or out of round due to uneven clamping force. This results in higher quality subsequent processes such as bending and ferruling.

[0192] This mechanism automatically completes the clamping action by using only one gripper to drive a cylinder to move the guide tube axially. The magnitude of the clamping force and the clamping state are directly determined by the cylinder's stroke, eliminating the need for complex multi-component linkage adjustments or additional positioning sensors. This self-tightening mechanical design results in a fast clamping response and close timing coordination with the cutting action.

[0193] During the cutting process, the first clamping assembly reliably clamps the copper tube in the front. Combined with the high-speed rotation of the cutter head disc in the cutting assembly and the radial feed of the cutting blade, the copper tube does not slip or vibrate during cutting. The uniform clamping force combined with the stable cutting process avoids uneven cut surfaces, slanted cuts, and tube end deformation, improving the flatness and dimensional accuracy of the cut end and meeting the requirements of high-precision pipeline manufacturing.

[0194] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0195] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0196] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0197] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A cutting mechanism for cutting pipe fittings (100), characterized in that, The cutting mechanism includes: The first clamping assembly (200) includes a guide tube (201), a plurality of grippers (202) and a cutter head connector (203) arranged sequentially in a horizontal direction. The plurality of grippers (202) are disposed at the ends of the guide tube (201) and are arranged at intervals along the circumferential direction of the guide tube (201) to form a clamping space (210). Each gripper (202) can be flexibly arranged. The cutter head connector (203) is provided with a through channel (204), and the tube (100) is sequentially inserted into the guide tube (201) and the through channel (204); from the first end to the second end of the through channel (204), the opening of the through channel (204) gradually decreases, and the first end is positioned closer to the clamp (202) than the second end; The conduit (201) is movably arranged in the horizontal direction so that, as each of the grippers (202) extends into the through channel (204) and fits against the channel wall of the through channel (204), the grippers (202) are pushed by the channel wall to move toward the center of the clamping space (210) to clamp the pipe fitting (100). A cutting assembly (300) is at least partially sleeved on the first clamping assembly (200). The cutting assembly (300) includes a blade disc (301) and a cutting blade (302). The cutting blade (302) is disposed on the blade disc (301). The blade disc (301) drives the cutting blade (302) to be rotatably disposed. The cutting end of the pipe (100) extends out from the blade disc (301) to cut the pipe (100) by the cutting blade (302).

2. The cutting mechanism according to claim 1, characterized in that, The first end of the through channel (204) is provided with a tapered channel section (205). From the first end to the second end, the cross-sectional area of ​​the tapered channel section (205) gradually decreases. During the process of moving towards the cutter head connector (203), each of the grippers (202) clamps the pipe fitting (100) by fitting against the channel wall of the tapered channel section (205).

3. The cutting mechanism according to claim 1 or 2, characterized in that, Each of the grippers (202) is provided with a guide surface (206), which is an inclined surface, so that as the guide tube (201) moves toward the cutter head connector (203), the guide surface (206) fits against the channel wall of the through channel (204) to guide the gripper (202).

4. The cutting mechanism according to claim 1, characterized in that, The first clamping assembly (200) further includes: A first pushing component (207) is provided to extend and retract in the horizontal direction. The first pushing component (207) is connected to the conduit (201) so as to drive the conduit (201) to move in the horizontal direction.

5. The cutting mechanism according to claim 4, characterized in that, The first pushing component (207) includes: A catheter drive (208) having a piston rod; A push plate (209) is connected to the piston rod, and a conduit (201) passes through the push plate (209). The piston rod drives the conduit (201) to move through the push plate (209).

6. The cutting mechanism according to claim 1, characterized in that, The cutting blade (302) is movably disposed along the radial direction of the blade disc (301) to cut the pipe (100) close to it or away from it.

7. The cutting mechanism according to claim 1, characterized in that, The cutting assembly (300) further includes: A hobbing push rod (303) is disposed inside the cutter head disc (301), and the cutting blade (302) is disposed on the hobbing push rod (303); The second pushing component (304) is movably disposed along the radial direction of the cutter head disk (301). The second pushing component (304) is connected to the hobbing rod (303) to drive the cutting blade (302) to move through the hobbing rod (303).

8. The cutting mechanism according to claim 7, characterized in that, The cutting assembly (300) further includes: A feed sleeve (305) is sleeved on the cutter head disc (301), and the feed sleeve (305) is movably arranged along the axial direction of the cutter head disc (301); The second pushing component (304) extends out from the circumferential side of the cutter head disc (301). The second pushing component (304) is provided with a wedge-shaped surface (306) so that as the feed sleeve (305) gradually moves towards the front end of the cutter head disc (301), it gradually comes into contact with the wedge-shaped surface (306) so that the second pushing component (304) is pushed towards the center of the cutter head disc (301) by the wedge-shaped surface (306) so that the cutting blade (302) cuts the pipe (100).

9. The cutting mechanism according to claim 8, characterized in that, The cutting assembly (300) further includes: The first elastic element has two ends connected to the second pushing component (304) and the cutter head connector (203) respectively, so that the second pushing component (304) is pushed away from the tube (100) by the elastic restoring force of the first elastic element, and the feed sleeve (305) is pushed towards the rear end of the cutter head disc (301) by the wedge surface (306).

10. The cutting mechanism according to claim 8, characterized in that, The cutting assembly (300) further includes: A support member (308) is disposed on the cutter head disk (301), and the support member (308) and the cutting blade (302) are spaced apart along the circumferential direction of the cutter head disk (301); A pusher rod (309) is disposed inside the cutter head disc (301). The pusher rod (309) is movably disposed along the radial direction of the cutter head disc (301) to drive the support member (308) to move. When the cutting blade (302) cuts the pipe (100), the support member (308) abuts against the pipe (100) to support the pipe (100).

11. The cutting mechanism according to claim 8, characterized in that, The cutting mechanism also includes: A third pushing component (400) has a retractable pushing rod disposed opposite to the feed sleeve (305) to push the feed sleeve (305) to move.

12. The cutting mechanism according to claim 1, characterized in that, The cutting assembly (300) further includes: The cutter head spindle (310) is sleeved on the guide tube (201) and the cutter head connector (203); A bushing (311) is sleeved on the cutter head spindle (310) and connected to the cutter head disc (301). The bushing (311) is rotatably arranged so as to drive the cutter head disc (301) to rotate.

13. The cutting mechanism according to claim 12, characterized in that, The cutting assembly (300) further includes: A gear hobbing (312) is fitted onto the bushing (311) and connected to the bushing (311); A drive component, the drive shaft of which is connected to the hobbing gear (312) via a timing belt, so as to drive the bushing (311) to rotate via the hobbing gear (312).

14. The cutting mechanism according to claim 1, characterized in that, The cutting mechanism also includes: The second clamping component (500) is disposed at the end of the cutting component (300) away from the first clamping component (200). After the pipe (100) extends out from the first clamping component (200) and the cutting component (300), it is clamped by the second clamping component (500).

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