Carbon tube cutting automatic feeding machine for lathe

Abstract

The invention discloses a carbon tube cutting automatic feeding machine for a lathe. The carbon tube cutting automatic feeding machine is used for efficient and high-precision cutting of carbon fiber long tubes. The feeder comprises a rack, a material supply device, a feeding device and a jacking device. Parallel guide rails and a rack are arranged on the machine frame. The feeding device drives a driving gear to move along a rack through a servo motor, and a material pushing shaft is pushed to feed materials. A follow-up mechanism is arranged at the tail end of the material pushing shaft, can synchronously rotate at a high speed along with the carbon tube and is matched with a damping assembly to eliminate radial swinging. And the pushing shaft has a floating stroke in the axial direction relative to the feeding sliding table by utilizing a jacking spring and a jacking sensor. At the moment of clamping of the lathe chuck, the pushing shaft compresses the spring backwards and triggers the sensor, the system stops feeding, and the compressed spring provides continuous axial jacking force. The mechanism effectively counteracts the axial backward movement when the carbon tube is clamped, and ensures the cutting positioning precision. According to the long pipe cutting device, automation of long pipe cutting, high-precision movement prevention and high safety are achieved.

Description

Technical Field

[0001] This invention belongs to the field of automated mechanical equipment, and in particular relates to an automatic feeding device for cutting carbon fiber tubes on a lathe. Background Technology

[0002] In modern industrial manufacturing, carbon fiber tubes are widely used in aerospace, sporting goods, and automation equipment due to their lightweight and high strength. When performing mass cutting or precision machining of carbon fiber tubes, lathes or specialized cutting machines are typically required. However, existing automated tube feeding systems face the following significant technical challenges when processing long carbon fiber tubes (e.g., 4 meters and above): First, the material feeding efficiency is low and the degree of automation is insufficient. Traditional lathes or semi-automatic equipment require operators to manually feed long tubes into the spindle, which is labor-intensive and inefficient, making it difficult to meet the needs of large-scale, continuous production.

[0003] Secondly, there are safety hazards and stability issues associated with the high-speed rotation of long tubes. When carbon fiber tubes are held in place by the lathe spindle and rotate at high speed, their rear end (the part suspended on one side of the feeder) is prone to radial whirling and resonance due to its excessive length and relatively limited rigidity. This not only poses a serious safety hazard to the equipment and operators, but also affects the stability and accuracy of the cutting process, and may even lead to damage to the tube.

[0004] Third, cutting accuracy is difficult to guarantee. When the carbon tube is clamped by the lathe chuck, due to the direction of the clamping force and the slight elastic deformation of the carbon tube itself, the tube often exhibits a slight axial retreat. If the feeding system cannot effectively compensate for this, it will lead to a deviation in the positioning reference during cutting, making it difficult to control the final length accuracy of the cut product.

[0005] Fourth, limitations of the feeding system and centering mechanism. For feeding ultra-long tubes, traditional screw drive or belt drive systems struggle to guarantee sufficient rigidity, precision, and reliability over long distances. Furthermore, how to quickly and accurately align the long tube with the pusher shaft after it falls from the hopper is a problem that has not yet been effectively solved in existing technologies.

[0006] Therefore, the industry urgently needs an automated feeding solution that can solve the above problems. This solution must have efficient automated feeding capabilities, reliable long tube rotation support stability, and a high-precision anti-slip positioning mechanism. Summary of the Invention

[0007] This invention aims to solve the technical problems existing in the cutting of carbon fiber tubes on lathes, such as low feeding efficiency, safety hazards caused by the high-speed rotation of long materials, and poor cutting accuracy due to the carbon tube shifting backward when the lathe chuck clamps. To address these problems, this invention provides an automatic feeding machine for cutting carbon fiber tubes on a lathe, which can achieve automatic and continuous feeding of carbon fiber tubes, precise clamping to prevent shifting, and follow-up rotation support.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An automatic feeding machine for carbon tube cutting on a lathe includes a frame, a feeding device, a feeding mechanism, and a clamping device. The frame is mounted on the feeding side of the carbon tube cutting lathe, and its top is provided with parallel guide rails and a parallel rack installed parallel to the carbon tube feeding direction. A feeding table is fixed to one end of the frame near the lathe for guiding the feeding operation of the carbon tubes.

[0009] The feeding device is mounted on the frame and is used to store and continuously supply carbon fiber tube lengths.

[0010] The feeding device is mounted on the frame and slides along the carbon tube feeding direction to apply a thrust to the carbon tube, causing it to move towards the lathe. The feeding device includes a feeding slide, a feeding actuator, a drive gear, a pusher shaft, and a follower mechanism. One end of the pusher shaft is mounted on the feeding slide, and the other end abuts against the end of the carbon tube furthest from the lathe. The feeding slide is slidably connected to the parallel guide rail via a slider. The feeding actuator is fixed to the feeding slide, and the drive gear is fixed to the output end of the feeding actuator, forming a meshing transmission connection with the parallel rack. The feeding actuator drives the drive gear to rotate, and through meshing transmission, drives the feeding slide to move parallel along the parallel rack, thereby causing the pusher shaft mounted on the feeding slide to apply a feeding thrust to the carbon tube, pushing it into the lathe for cutting. The follower mechanism is mounted on the end of the pusher shaft that abuts against the carbon tube, and is used to rotate synchronously with the carbon tube.

[0011] The clamping device is assembled on the feeding device and is used to clamp the carbon tube entering the lathe.

[0012] In a preferred embodiment of the present invention, the clamping device includes a clamping spring, a spring seat, and a clamping sensor. The spring seat is fixed to the feed slide, one end of the clamping spring abuts against the spring seat, and the other end abuts against the end of the pusher shaft away from the carbon tube. Its elastic force drives the pusher shaft to clamp the carbon tube. The clamping sensor is mounted on the feed slide via a sensor bracket and senses the position of the end of the pusher shaft abutting against the clamping spring.

[0013] In a preferred embodiment of the present invention, the feeding device is further provided with at least two sets of linear bearings, which are fixedly connected to the feeding slide at a certain distance through bearing seats. The end of the pusher shaft near the clamping device passes through the two sets of linear bearings, forming a linear sliding connection.

[0014] As a preferred embodiment of the present invention, the feeding device is further provided with a damping component. The damping component is installed on the feeding slide and has an arc-shaped damping block that matches the outer peripheral surface of the pusher shaft. The arc-shaped end of the damping block is tightly attached to the outer peripheral surface of the pusher shaft under the drive of the spring, forming a clamping damping effect on the pusher shaft.

[0015] In a preferred embodiment of the present invention, the follower mechanism is provided with a follower bearing and a tapered component. One end of the tapered component is rotatably connected to the end of the pusher shaft via the follower bearing, and the other end, which has a tapered structure, is used to abut against the carbon tube, and forms a tapered guide surface and a stop step for abutting against the end face of the carbon tube.

[0016] In a preferred embodiment of the present invention, the feeding device includes a feeding bracket, a storage bin, and a baffle assembly. The storage bin is installed at an incline on the feeding bracket and has a discharge port on the side facing the parallel rack. The baffle assembly is installed on the feeding bracket at the position corresponding to the discharge port and is used to block or release the carbon tube at the discharge port. The feeding device also includes a pushing assembly forcibly pushing the carbon tube at the discharge port after the baffle rod descends, preventing material jamming.

[0017] In a preferred embodiment of the present invention, at least two sets of receiving assemblies are spaced apart along the carbon tube feeding direction on the frame. Each set of receiving assemblies includes a receiving base plate and two sets of receiving mechanisms symmetrically arranged on both sides of the receiving base plate; each set of receiving mechanisms includes: a receiving cylinder, a receiving slide plate, a receiving guide rail, a receiving bracket, and a receiving wedge; the receiving guide rail is fixed to the receiving base plate, and the receiving slide plate is slidably connected to the receiving guide rail; one end of the receiving bracket is fixed to the receiving slide plate, and the other end is fixed to the receiving wedge; the receiving cylinders on both sides drive their respective receiving slide plates to move towards the center, causing the receiving wedges on both sides to approach each other, and their inwardly inclined wedge-shaped slopes on opposite sides combine to form a V-shaped structure with a self-centering function, used to support and correct the carbon tube axis.

[0018] Compared with the prior art, the beneficial effects of the present invention are: ①Greatly improves automation level and production efficiency: It realizes fully automatic continuous cycle operation of carbon tubes from storage, receiving, centering, feeding to precise clamping, significantly reducing manual intervention and increasing the processing volume per unit time.

[0019] ② Achieved high-precision cutting and anti-slip compensation: The unique clamping device combines the flexible axial thrust provided by the spring with the sensor signal, which can actively counteract or compensate for the slight axial slippage of the carbon tube at the moment the lathe chuck clamps the carbon tube, thereby ensuring the accurate positioning reference of the cutting length and greatly improving the product accuracy.

[0020] ③ Ensures the stability and safety of high-speed rotation of the long tube: The follow-up mechanism realizes the synchronous rotation of the pusher head and the carbon tube, effectively avoiding friction and wear; together with the damping component, the pusher shaft is tightly supported, effectively suppressing the radial sway and resonance of the carbon tube during high-speed rotation, improving the smoothness of operation and the safety of the equipment.

[0021] ④ Reliable structural design and strong applicability: The use of gear and rack transmission ensures the accuracy and rigidity of ultra-long stroke feeding; at the same time, the opening and closing V-shaped receiving assembly can quickly and accurately calibrate the tube to the pushing shaft, ensuring the success rate and reliability of feeding and docking.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the receiving component of the present invention in the receiving state; Figure 3 This is a schematic diagram of the feeding device and the baffle rod of the present invention; Figure 4 This is a schematic diagram of the storage bin and push rod of the present invention; Figure 5 This is a schematic diagram of the material receiving assembly of the present invention; Figure 6 This is a schematic diagram of the feeding device of the present invention in the advancing state; Figure 7 This is a schematic diagram of the pusher shaft and clamping device of the present invention; Figure 8 This is a schematic diagram of the structure of the conical component and the carbon nanotube of the present invention in a separated state.

[0025] The reference numerals and names in the figure are as follows: 10 Frame; 11 Parallel guide rail; 12 Parallel rack; 13 Feeding table; 20 Feeding device; 21 Feeding actuator; 22 Drive gear; 23 Feeding slide; 24 Linear bearing; 25 Damping assembly; 26 Pushing shaft; 27 Follower bearing; 28 Conical part; 30 Tightening device; 31 Tightening spring; 32 Spring seat; 33 Tightening sensor; 34 Sensor bracket; 40 Feeding device; 41 Feeding bracket; 42 Storage bin; 43 Discharge port; 44 Stopping bracket; 45 Stopping cylinder; 46 Stopping rod; 47 Pushing bracket; 48 Pushing cylinder; 49 Pushing rod; 50 Receiving assembly; 51 Receiving base plate; 52 Receiving cylinder; 53 Receiving slide plate; 54 Receiving guide rail; 55 Receiving bracket; 56 Receiving wedge; 60 Carbon tube. Detailed Implementation

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figures 1 to 8 This invention provides an automatic feeding machine for cutting carbon tubes 60 for lathes. The following will describe in detail the structural composition, connection relationship and working principle of this invention with reference to specific embodiments.

[0028] Unless otherwise specified, all components described in this embodiment are connected by rigid connection or standard mechanical connection known to those skilled in the art, and the actions of each actuator are controlled by a programmable logic controller (PLC).

[0029] The connection methods of each component are conventional mechanical methods such as fixed connection, sliding connection or rotating connection, and the specific connection relationships are described in each chapter of the instruction manual.

[0030] I. Overall Structure and Feeding Device 20 (e.g.) Figure 1 , Figure 2 and Figure 6 (As shown) This automatic feeder mainly includes a frame 10, a feeding device 40, a feeding device 20, a clamping device 30, and at least two sets of receiving components 50.

[0031] Frame 10: The frame 10 is a long, rectangular load-bearing structure, fixed to the feed side of the carbon tube 60 cutting lathe by feet or brackets. A guide mechanism and a transmission mechanism are laid on the top of the frame 10 along the feed direction (i.e., axial direction) of the carbon tube 60. The guide mechanism preferably employs a parallel guide rail 11 and a linear slider structure, and the transmission mechanism preferably employs a meshing transmission structure of a parallel rack 12 and a drive gear 22. The parallel guide rail 11 provides guiding support for the feed device 20; the parallel rack 12 provides a transmission path for the feed device 20, ensuring long-stroke, high-precision linear motion.

[0032] A feed table 13 is provided at one end of the frame 10 near the lathe, providing initial support and transition for the carbon tube 60 that is about to enter the lathe spindle. The feed table 13 is fixed to a certain height on the upper part of the frame 10 by a support base, so that the funnel-shaped cavity of the feed table 13 is coaxially arranged with the pusher shaft 26. The feed table 13 is fixed to the end of the frame 10 near the lathe, and its side facing the feed device 20 has a funnel-shaped cavity to guide the feeding operation of the carbon tube 60. The coaxial arrangement of this funnel-shaped cavity with the pusher shaft 26 ensures that the carbon tube 60 can accurately and smoothly pass through the funnel-shaped cavity and be pushed into the preset position of the lathe under the pusher shaft 26.

[0033] Feeding device 20: The feeding device 20 is the core mechanism for long-distance feeding of carbon tube 60. It is slidably connected to the parallel guide rail 11. The feeding device 20 mainly includes a feeding slide 23, a feeding actuator 21, a drive gear 22, and a pusher shaft 26.

[0034] The feed actuator 21 is preferably a servo motor, fixedly connected to the feed slide 23. The drive gear 22 is mounted on the output shaft of the servo motor and meshes with the parallel rack 12 on the frame 10. The servo motor drives the drive gear 22 to rotate, thereby driving the entire feed slide 23 to move synchronously linearly along the parallel rack 12 and the guide rail. This gear and rack transmission method is suitable for feeding carbon tubes 60 that are several meters long (e.g., 4 meters), and has the advantages of simple structure, stable transmission, and unlimited stroke.

[0035] The feed actuator 21 (preferably a servo motor) is connected to the drive gear 22 via a reducer. The reducer is preferably of a type with self-locking characteristics (e.g., a worm gear reducer) to form a servo geared motor system. This self-locking characteristic utilizes mechanical principles (e.g., the worm gear reducer utilizes the mechanical characteristic that the worm lead angle is less than the equivalent friction angle) to ensure that after the feed actuator 21 stops operating or is powered off, the feed slide 23 will not slide in the opposite direction due to the load or the reaction force of the pusher shaft 26, thereby stably maintaining the driving force for pushing the carbon tube 60 throughout the entire cutting cycle.

[0036] The automatic feeder for cutting carbon tubes 60 on the lathe is also equipped with an electrical control system, which preferably uses a programmable logic controller (PLC) as the core control unit. This PLC control system is connected to all sensors and actuators on the feeder via signal cables. Its functions include: receiving status feedback signals from the clamping sensor 33, the travel limit switch of the feed device 20, and the blocking and pushing components in the feeding device 40; and sending drive commands to the feed actuator 21 (such as a servo motor), the blocking cylinder 45, the pushing cylinder 48, and the receiving cylinder 52, etc., according to the preset cutting program and carbon tube 60 product parameters, to achieve automated control and precise timing management of the entire process, including feeding, centering, precise clamping, and cyclic cutting.

[0037] II. Structure of the clamping device 30 and the pusher shaft 26 (e.g.) Figure 2 , Figure 6 and Figure 7 (As shown) Pusher shaft 26: The pusher shaft 26 is used to directly apply axial thrust to the carbon tube 60. One end of the pusher shaft 26 is connected to the feed slide 23, and the other end extends towards the lathe. The key design feature of the pusher shaft 26 is its connection method with the feed slide 23, which achieves relative axial sliding.

[0038] Linear sliding fit: To achieve axial relative sliding, the end of the pusher shaft 26 near the feed slide 23 is fitted into at least two sets of linear bearings 24. The two sets of linear bearings 24 are fixed to the feed slide 23 at intervals along the feeding direction by bearing seats. The main body of the pusher shaft 26 can move smoothly axially in the linear bearings 24 while maintaining radial rigidity to prevent the pusher shaft 26 from wobbling.

[0039] The clamping device 30 is the core mechanism for achieving the "anti-slip" function. It includes a spring seat 32, a clamping spring 31, and a clamping sensor 33. The spring seat 32 is fixed to the feed slide 23, and the pusher shaft 26 passes through the spring seat 32. The clamping spring 31 is sleeved on the pusher shaft 26, with its two ends abutting against the limiting surface of the spring seat 32 and the shoulder of the pusher shaft 26, respectively. In its initial state, it is pre-compressed and always applies an axial spring force towards the lathe to the pusher shaft 26. Its pre-compression spring force always drives the pusher shaft 26 to extend in the lathe direction (forward). The clamping sensor 33 is preferably a non-contact proximity switch, which is mounted on the feed slide 23 through a sensor bracket 34 and is used to monitor the axial position of the pusher shaft 26 relative to the feed slide 23 in real time.

[0040] Anti-slip working principle: ① Feeding position: The feed actuator 21 drives the pusher shaft 26 to push the carbon tube 60 to the predetermined cutting position on the lathe.

[0041] ② Trigger compression: When the lathe chuck begins to clamp the carbon tube 60, the carbon tube 60 generates a slight axial backward movement. The pusher shaft 26 is forced to move backward by the reaction force of the carbon tube 60, compressing the top spring 31 (at this time, the feed actuator 21 maintains its current position and does not continue to drive the feed slide 23 to move).

[0042] ③ Tightening and Locking: When the pusher shaft 26 moves backward to a preset value, the tightening sensor 33 is triggered. After receiving the signal, the PLC immediately stops the rotation of the feed actuator 21. At this time, the compressed tightening spring 31 continuously applies a stable axial tightening force to the carbon tube 60. This force is sufficient to counteract the axial backward force generated by the lathe chuck during clamping, thereby ensuring that the positioning reference of the carbon tube 60 is not affected and ensuring the accuracy of the cutting length.

[0043] III. Follow-up mechanism and damping component 25 (e.g.) Figure 7 and Figure 8 (As shown) Follower mechanism: The follower mechanism is assembled at the far end of the pusher shaft 26 to achieve unified clamping and rotational support. It includes a follower bearing 27 and a tapered member 28. The tapered member 28 is rotatably connected to the end of the pusher shaft 26 via the follower bearing 27. The tapered member 28 has a tapered guide surface for automatic centering and insertion into the inner hole of the carbon tube 60; at the same time, the tapered member 28 has a stop step for abutting against the end face of the carbon tube 60. When the carbon tube 60 is clamped and rotated at high speed by the lathe, the follower bearing 27 causes the tapered member 28 to passively follow the carbon tube 60 and rotate synchronously, while the main body of the pusher shaft 26 remains in a non-rotating state within the linear bearing 24, thereby avoiding high-speed friction and wear.

[0044] Damping assembly 25: The damping assembly 25 is used to suppress radial vibration and swaying that may occur in the pusher shaft 26 under the action of the high-speed rotating carbon tube 60. The damping assembly 25 is mounted on the feed slide 23 and mainly consists of an arc-shaped damping block and a damping spring. The damping spring applies radial pressure to the arc-shaped damping block, making it fit tightly against the outer circumferential surface of the pusher shaft 26. The damping block is preferably made of wear-resistant, low-friction engineering plastic (such as nylon or polytetrafluoroethylene). This accessory can continuously absorb the radial vibration energy of the pusher shaft 26 and eliminate mechanical clearance, but does not affect the axial sliding and rotational degrees of freedom (follower mechanism) of the pusher shaft 26.

[0045] IV. Feeding device 40 and receiving assembly 50 (e.g.) Figures 3 to 6 (As shown) Feeding device 40: The feeding device 40 includes a feeding bracket 41, a storage bin 42, and a material blocking assembly. The feeding bracket 41 is mounted on the frame 10, and the storage bin 42 is mounted on the feeding bracket 41 at a certain angle. The material in the tube 60 is automatically rolled down and collected at the lower outlet 43 by the gravity of the carbon tube 60.

[0046] Material blocking assembly: Located at the discharge port 43, it includes a material blocking bracket 44, a material blocking cylinder 45, and a material blocking rod 46. The material blocking cylinder 45 is installed at the bottom of the crossbeam of the feeding bracket 41 via the material blocking bracket 44, and drives the material blocking rod 46 to move up and down to block or release the carbon tube 60 at the discharge port 43.

[0047] Material pushing assembly: To ensure reliable feeding of carbon tube 60, a material pushing assembly is added to the back side of the discharge port 43, including a material pushing bracket 47, a material pushing cylinder 48, and a material pushing rod 49. When the baffle rod 46 releases the carbon tube 60, the material pushing cylinder 48 drives the material pushing rod 49 to perform horizontal auxiliary pushing, ensuring that the carbon tube 60 is disengaged from the storage bin 42 and preventing jamming.

[0048] Receiving assembly 50: The receiving assembly 50 is used to receive the carbon tubes 60 falling from the feeding device 40 and to precisely center them. At least two sets of receiving assemblies 50 are arranged axially at intervals on the frame 10. Each set of receiving assemblies 50 is provided with a receiving base plate 51, and two sets of opposing moving receiving mechanisms are symmetrically arranged on both sides of it. Each set of receiving mechanisms includes a receiving cylinder 52, a receiving slide plate 53, a receiving guide rail 54, a receiving bracket 55, and a receiving wedge 56. The receiving guide rail 54 is fixed to the receiving base plate 51, and the receiving slide plate 53 is slidably connected to the receiving guide rail 54.

[0049] Operation Flow: The receiving cylinders 52 on both sides operate synchronously, driving their respective receiving slide plates 53 to move towards the center along the guide rail, causing the receiving wedges 56 on both sides to approach and close together. The opposing surfaces of the two sets of receiving wedges 56 are designed with precise wedge-shaped inclined surfaces (combined to form a V-shaped groove). When the two wedges close together, their V-shaped grooves can force the rolling carbon tube 60 to be aligned with the central axis, so that the axis of the carbon tube 60 is completely coincident with the axis of the pusher shaft 26, ensuring that the tapered part 28 of the pusher shaft 26 can be smoothly and without deviation inserted into the inner hole of the carbon tube 60.

[0050] After the pusher shaft 26 successfully connects to the carbon tube 60, the receiving cylinders 52 on both sides drive the corresponding receiving wedges 56 to retract outward, so that the receiving wedges 56 are removed from under the carbon tube 60, making room for the feed slide 23 to pass through, thus avoiding mechanical interference.

[0051] V. Workflow Overview This device achieves fully automatic cyclic cutting through a PLC control system. Its main workflow is as follows: System initialization: Each cylinder and feed actuator 21 is reset to its initial position, and the clamping sensor 33 is in an untriggered state.

[0052] Feeding and centering: The material blocking assembly releases the first carbon tube 60, and the material pushing assembly assists in pushing it out. The receiving cylinder 52 drives the receiving wedge 56 to close, and the carbon tube 60 falls into the area of ​​the receiving assembly 50, achieving precise centering of the carbon tube 60.

[0053] Push-in positioning: The feed actuator 21 drives the pusher shaft 26 forward, and the tapered part 28 of the follower mechanism inserts into the inner hole of the carbon tube 60 and abuts against it. The receiving assembly 50 retracts, making way for the travel path of the feed slide 23.

[0054] Initial clamping and tightening: The feed slide 23 continues to advance, and the front end of the carbon tube 60 enters the lathe chuck. When the lathe chuck is clamped, the pusher shaft 26 moves axially backward and triggers the clamping sensor 33. The system stops feeding, and the clamping spring 31 applies a continuous clamping force to complete the anti-slip positioning. The lathe begins to cut the first piece.

[0055] Cyclic Cutting and Feeding: After cutting, the lathe chuck is released, and the pusher shaft 26 is reset under the action of the clamping spring 31 (sensor signal disappears). The feed device 20 continues to advance the predetermined product length and stops at the new positioning point. The lathe clamps and cuts. This step is repeated until the end of the long tube.

[0056] End return and new cycle: After the last product is cut, the feeding device 20 quickly returns to the initial position and begins to repeat the above process to automatically feed and cut the next carbon tube 60.

[0057] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. An automatic feeding machine for cutting carbon fiber tubes for lathes, characterized in that, include: The frame (10) is mounted on the carbon tube (60) feeding side of the carbon tube (60) cutting lathe. The top of the frame (10) is provided with a guide mechanism and a transmission mechanism extending along the feeding direction of the carbon tube (60). The end of the frame (10) near the lathe is fixedly connected to a feeding table (13). A feeding device (40), assembled on the frame (10), is used to store and supply carbon fiber tubes; A feeding device (20) is mounted on the frame (10) and slides along the feeding direction of the carbon tube (60); the feeding device (20) includes a feeding slide (23), a feeding actuator (21), a pusher shaft (26), and a follower mechanism; the feeding slide (23) is slidably connected to the guide mechanism, the feeding actuator (21) is fixed to the feeding slide (23) and forms a transmission connection with the transmission mechanism, driving the feeding slide (23) to move along the transmission mechanism; one end of the pusher shaft (26) is connected to the feeding slide (23), and the other end extends toward the lathe; the follower mechanism is mounted on the end of the pusher shaft (26) away from the feeding slide (23), for abutting the carbon tube (60) and rotating synchronously with the carbon tube (60); and A clamping device (30), assembled on the feed device (20), is used to provide axial clamping force when the carbon tube (60) enters the lathe and is clamped.

2. The automatic feeding machine for cutting carbon fiber tubes for lathes according to claim 1, characterized in that, The clamping device (30) includes a spring seat (32), a clamping spring (31), and a clamping sensor (33). The spring seat (32) is fixed to the feed slide (23). One end of the pusher shaft (26) passes through the spring seat (32) and forms a slidable connection with the spring seat (32) along the axial direction. The clamping spring (31) is located between the pusher shaft (26) and the spring seat (32), with its two ends abutting against the end structures of the spring seat (32) and the pusher shaft (26), respectively, to apply a spring force toward the lathe direction to the pusher shaft (26). The clamping sensor (33) is mounted on the feed slide (23) through a sensor bracket (34) to detect the position of the pusher shaft (26) relative to the feed slide (23) after compressing the clamping spring (31).

3. The automatic feeding machine for cutting carbon fiber tubes for lathes according to claim 1, characterized in that, The feeding device (20) further includes at least two sets of linear bearings (24), which are fixedly connected to the feeding slide (23) at intervals along the feeding direction through bearing seats; the pusher shaft (26) passes through the two sets of linear bearings (24) and forms a linear sliding connection with the feeding slide (23).

4. The automatic feeding machine for cutting carbon fiber tubes for lathes according to claim 1, characterized in that, The feeding device (20) is also provided with a damping component (25), which is installed on the feeding slide (23) and includes an arc-shaped damping block that matches the outer circumferential surface of the pusher shaft (26) and a damping spring; the arc-shaped damping block is pressed against the outer wall of the pusher shaft (26) under the drive of the damping spring.

5. The automatic feeding machine for cutting carbon fiber tubes for lathes according to claim 1, characterized in that, The follower mechanism includes a follower bearing (27) and a tapered member (28); one end of the tapered member (28) is rotatably connected to the end of the pusher shaft (26) through the follower bearing (27); the end of the tapered member (28) facing away from the pusher shaft (26) is provided with a tapered guide surface for insertion into the carbon tube (60) and a stop step that abuts against the end face of the carbon tube (60).

6. The automatic feeding machine for cutting carbon fiber tubes for lathes according to claim 1, characterized in that, The feeding device (40) includes a feeding bracket (41), a storage bin (42), and a baffle assembly; the feeding bracket (41) is installed on the frame (10) and located above the feeding device (20); the storage bin (42) is installed at an angle on the feeding bracket (41) and has a discharge port (43) on the side facing the transmission mechanism; the baffle assembly is installed on the feeding bracket (41) at the position corresponding to the discharge port (43) and is used to block or release the carbon tube (60) at the discharge port (43).

7. The automatic feeding machine for cutting carbon fiber tubes for lathes according to claim 6, characterized in that, The material blocking assembly includes a material blocking bracket (44), a material blocking cylinder (45), and a material blocking rod (46); the material blocking bracket (44) is fixed to the bottom of the crossbeam of the feeding bracket (41), and the material blocking cylinder (45) is installed on the material blocking bracket (44); a through hole is provided on the crossbeam of the feeding bracket (41), one end of the material blocking rod (46) is connected to the piston rod of the material blocking cylinder (45), and the other end passes through the through hole and protrudes telescopically from the material bearing surface of the feeding bracket (41).

8. The automatic feeding machine for cutting carbon fiber tubes for lathes according to claim 6, characterized in that, The feeding device (40) is also provided with a pushing assembly, which includes a pushing bracket (47), a pushing cylinder (48), and a pushing rod (49). The pushing bracket (47) is fixed to the feeding bracket (41) at the position corresponding to the back side of the discharge port (43). The pushing cylinder (48) is installed on the pushing bracket (47), and the pushing cylinder (48) drives the pushing rod (49) to extend towards the discharge port (43) to push the carbon tube (60) located at the discharge port (43) to be smoothly dislodged.

9. The automatic feeding machine for cutting carbon fiber tubes for lathes according to claim 1, characterized in that, At least two sets of receiving assemblies (50) are provided at intervals along the feeding direction of carbon tubes (60) on the frame (10) for receiving carbon tubes (60) supplied by the feeding device (40) and holding the carbon tubes (60) on the travel path of the pusher shaft (26).

10. The automatic feeding machine for cutting carbon fiber tubes for lathes according to claim 9, characterized in that, Each receiving assembly (50) includes a receiving base plate (51) and two sets of receiving mechanisms symmetrically arranged on both sides of the receiving base plate (51) for closing towards the center; each receiving mechanism includes: a receiving cylinder (52), a receiving slide plate (53), a receiving guide rail (54), a receiving bracket (55), and a receiving wedge (56); the receiving guide rail (54) is fixed to the receiving base plate (51), and the receiving slide plate (53) is slidably connected to the receiving base plate (51). Material guide rail (54); one end of the receiving bracket (55) is fixed to the receiving slide plate (53), and the other end is fixed to the receiving wedge (56); the receiving cylinders (52) on both sides drive their respective receiving slide plates (53) to move towards the middle, causing the receiving wedges (56) on both sides to approach each other; the opposite surfaces of the receiving wedges (56) on both sides are provided with inwardly inclined wedge-shaped slopes, which are combined to form a V-shaped structure for supporting and correcting the axis of the carbon tube (60).

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