Automatic cutting machine for arrow shafts

Abstract

This application relates to the field of arrow shaft production technology, and in particular to an automatic arrow shaft cutting machine. The machine is equipped with a frame, on which are mounted a feeding trough, a feeding drive mechanism, a main shaft power mechanism, a feeding clamping mechanism, and a slitting execution mechanism. The feeding clamping mechanism includes a feeding jaw and a clamping assembly. The slitting execution mechanism includes a cutter for cutting the arrow shaft on the feeding jaw. The main shaft power mechanism drives the feeding jaw to rotate at a uniform speed, and the arrow shaft is stably clamped using limiting teeth, a pressure groove, and the elastically clamping jaw, significantly improving slitting accuracy and cut quality. By setting independent end-slitting and middle-slitting execution mechanisms, the cutting position is adjustable and two slitting modes can be quickly switched, greatly improving the equipment's process adaptability and versatility. The entire process of arrow shaft feeding, conveying, clamping, slitting, and unloading is fully automated, improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of arrow shaft manufacturing technology, and in particular to an automatic arrow shaft cutting machine. Background Technology

[0002] In the field of archery equipment manufacturing, the arrow shaft, as a core component, directly determines the mechanical properties and consistency of the final product through the precision and efficiency of its cutting and processing. With the popularization of modern archery and the increasingly stringent quality requirements of related industries, arrow shaft processing is gradually transforming from traditional manual operations to automated, high-precision, and large-scale production methods. However, existing arrow shaft cutting equipment still generally suffers from numerous technical bottlenecks in actual production, making it difficult to meet the current high-quality development needs of the industry.

[0003] Currently, common arrow shaft cutting equipment has shortcomings in achieving automated continuous production. First, in the feeding and conveying stages, most equipment lacks an orderly feeding and screening mechanism, which can easily lead to jamming, material breakage, or the mixing of arrow shafts with incorrect diameters during conveying. This not only affects the continuity of the production cycle but may also interfere with or damage subsequent cutting mechanisms. Second, regarding clamping stability during the cutting process, existing equipment often lacks a mechanism that can provide stable and uniform clamping force throughout the cutting process. This causes slender arrow shafts to easily roll, move axially, or vibrate at high frequencies when subjected to cutting force, resulting in burrs, chipped edges, or tilted cross-sections, severely affecting the dimensional accuracy and end-face quality of the cut. Third, in terms of the adaptability of the cutting process, existing cutting devices are mostly fixed-station structures, lacking the ability to adjust the cutting position and cannot flexibly switch between end-cutting and intermediate segmentation modes. They also have poor adaptability to different specifications of arrow shafts, resulting in low automation levels, poor cutting accuracy, and low processing efficiency, failing to meet the requirements of integrated, continuous, and high-precision arrow shaft cutting production. Summary of the Invention

[0004] To address the above problems, this application provides an automatic arrow shaft cutting machine, which includes a frame, a feeding trough and a feeding drive mechanism, and further includes: Main spindle power mechanism; The feeding and clamping mechanism includes a feeding gear plate mounted on the main shaft power mechanism and a clamping component correspondingly disposed above the feeding gear plate; The slitting actuator includes a cutter for cutting the arrow shaft on the feeding jaw.

[0005] In one embodiment, the outer circumferential surface of the feeding disc is provided with limiting teeth and pressure groove. The pressing assembly includes a pressure roller mounting base, a pressing roller and a disc pressing belt. The two pressing rollers are rotatably mounted on the pressure roller mounting base. The disc pressing belt is sleeved on the outside of the two pressing rollers and placed in the pressing belt groove.

[0006] In one embodiment, two pressure rollers are respectively disposed on both sides of the feeding chuck. The pressure rollers are in contact with the feeding chuck through elastic elements. The upper surface of the feeding chuck is higher than the bottom of the pressure rollers. The chuck pressure band is pressed tightly against the pressure band groove. The feeding chuck is detachably and fixedly mounted on the rotating shaft of the main shaft power mechanism through a chuck locking sleeve.

[0007] In one embodiment, the slitting actuator further includes a cutting driver, and the cutter is fixedly mounted on the output end of the cutting driver. The slitting actuator includes an end slitting actuator and a middle slitting actuator, and both the end slitting actuator and the middle slitting actuator independently include the cutting driver and the cutter.

[0008] In one embodiment, multiple limiting teeth are provided, and a slitting groove is also provided on the outer circumferential surface of the feeding gear. The pressing groove and the slitting groove are respectively opened between two adjacent limiting teeth. The pressing groove and the slitting groove are circumferentially separated from each other by the limiting teeth. The slitting groove is a circumferential annular groove opened along the outer circumferential surface of the feeding gear. The cutter is partially placed in the slitting groove.

[0009] In one embodiment, a position adjustment mechanism is further provided, which includes a horizontal spacing adjustment component and a middle lifting adjustment component. The horizontal spacing adjustment component is connected to the cutting execution mechanism, and the middle lifting adjustment component is connected to the middle cutting execution mechanism. The horizontal spacing adjustment component includes a support plate, a slide rail, a slider, a sliding base plate, a position adjustment driver, and a transmission screw. The support plate is fixedly installed on the frame, the slide rail is horizontally disposed on the support plate, the slider is slidably engaged with the slide rail, the sliding base plate is fixedly connected to the slider, and the cutting driver and the pressure roller mounting seat are both fixedly installed on the sliding base plate. The output end of the position adjustment driver is connected to the transmission screw, and the transmission screw is in transmission engagement with the sliding base plate.

[0010] In one embodiment, the central lifting adjustment assembly includes a lifting moving plate and a lifting driver; the lifting moving plate is slidably mounted on the corresponding sliding base plate, the lifting driver is fixed on the supporting upright plate, the output end of the lifting driver is connected to the lifting moving plate, and the cutting driver and the pressure roller mounting seat are both fixedly mounted on the lifting moving plate.

[0011] In one embodiment, the spindle power mechanism includes two spindle seats, a spindle, a spindle pulley, a transmission belt, and a spindle driver; the two spindle seats are arranged opposite to each other on the frame, the spindle is rotatably mounted between the two spindle seats, the spindle pulley is disposed at one end of the spindle, and the spindle driver is driven to connect to the spindle pulley via the transmission belt.

[0012] In one embodiment, the discharge side of the feeding trough is provided with a guiding slope and a diameter-limiting material distribution mechanism. The diameter-limiting material distribution mechanism includes a mounting base, an adjusting frame movably mounted on the mounting base, and a pressure foot mounted on the adjusting frame. The bottom surface of the pressure foot is parallel to the guiding slope. The feeding trough includes at least two parallel and oppositely arranged U-shaped support plates. The bottom of the feeding trough is inclined downwards towards the discharge side. The feeding drive mechanism includes at least two feeding drivers. The output end of each feeding driver is provided with a top material rod. Each feeding driver is mounted on the lower side of the bottom of the feeding trough and located inside the U-shaped support plate. The top material rod is detachably connected to the output end of the feeding driver. The end of the top material rod is inclined, and the inclination angle is the same as the inclination angle of the guiding slope.

[0013] In one embodiment, the adjusting frame is slidably mounted on the mounting base via an adjusting mechanism, the adjusting mechanism including an adjusting handwheel and a drive rod; the adjusting handwheel is mounted on the mounting base, the drive rod has an external thread on its outer wall, the adjusting frame has a matching internal thread hole, and the drive rod is threadedly connected to the adjusting frame; the mounting base has a vertical sliding groove, and the adjusting frame is slidably accommodated in the sliding groove.

[0014] The beneficial effects of this invention are as follows: This application provides an automatic arrow shaft cutting machine. By setting a downward-sloping feeding trough composed of a U-shaped support plate on the frame, along with a feeding drive mechanism, a guiding inclined surface, and a diameter-limiting and separating mechanism, it achieves orderly single-shaft feeding, diameter screening, and end alignment of arrow shafts, effectively preventing jamming and excessively large diameter arrow shafts from entering subsequent processes. A main shaft power mechanism drives the feeding disc to rotate at a uniform speed, and the limiting teeth, pressure groove, and elastically pressing disc pressure band stably clamp the arrow shaft, preventing it from rolling, shifting, or vibrating during cutting, significantly improving cutting accuracy and cut quality. By setting independent end-cutting and middle-cutting execution mechanisms, along with horizontal spacing adjustment components and middle lifting adjustment components in the position adjustment mechanism, it achieves adjustable cutting position and rapid switching between two cutting modes, greatly improving the equipment's process adaptability and versatility. The entire process of arrow shaft feeding, conveying, pressing, cutting, and unloading is fully automated, improving production efficiency and meeting the batch processing needs of various specifications of arrow shafts and round rod-shaped products. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention with the arrow shaft attached; Figure 3 This is a front view of the present invention; Figure 4 for Figure 1 Enlarged view at point A; Figure 5 A schematic diagram of the invention after removing the feeding trough; Figure 6 for Figure 5 Enlarged view at point B; Explanation of symbols in the diagram: 1. Feeding chute; 11. Guide ramp; 12. U-shaped support plate; 2. Spindle power mechanism; 21. Spindle housing; 22. Spindle; 23. Spindle pulley; 24. Spindle driver; 3. Feeding and pressing mechanism; 31. Feeding gear; 311. Limiting tooth; 312. Pressure groove; 313. Slitting groove; 32. Pressing assembly; 321. Pressing roller mounting base; 322. Pressing roller; 33. Gear locking sleeve; 4. Cutting actuator; 41. Cutter; 42. Cutting driver; 5. Position adjustment mechanism; 51. Horizontal spacing adjustment assembly; 511. Support plate; 512. Slide rail; 513. Slider; 514. Sliding base plate; 515. Position adjustment driver; 516. Transmission screw; 52. Central lifting and adjusting assembly; 521. Lifting moving plate; 522. Lifting drive.

[0016] 6. Feeding drive mechanism; 61. Feeding driver; 62. Top rod; 7. Diameter limiting and material distribution mechanism; 71. Mounting base; 72. Adjusting frame; 73. Pressure foot; 8. Adjustment mechanism; 81. Adjustment handwheel; 82. Drive lever; 9. Water tank. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0018] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0019] like Figure 1 , 2 As shown in Figures 1 and 3, the present invention provides an automatic arrow shaft cutting machine, which is equipped with a frame, on which a feeding trough 1 and a feeding drive mechanism 6 are installed. It is also equipped with a main shaft power mechanism 2, a feeding clamping mechanism 3, a cutting execution mechanism 4, a position adjustment mechanism 5, a diameter limiting material distribution mechanism 7, and an adjustment mechanism 8. The mechanisms are interconnected and work together to form a complete automatic arrow shaft cutting device.

[0020] The feeding trough 1, serving as the feeding and bearing structure, includes at least two parallel and oppositely arranged U-shaped support plates 12, providing stable lateral support for the arrow shaft and preventing it from tipping over or shifting during transport. The bottom of the feeding trough 1 is inclined downwards towards the discharge side, allowing the arrow shaft placed inside to automatically move towards the discharge end under its own weight, eliminating the need for additional power. This simple structure ensures reliable operation and effectively improves the smoothness and continuity of feeding. A guide ramp 11 is fixedly installed on the discharge side of the feeding trough 1. The inclination angle of the guide ramp 11 is set within the range of 30° to 50°, ensuring that the arrow shaft slides smoothly under its own weight without causing excessive impact or loss of control due to an excessively large angle, thus ensuring a stable and orderly feeding process. A limiting baffle is provided at the bottom of the guide ramp 11 to block and position the arrow shaft sliding down the ramp, ensuring it stops accurately at a designated position and providing a stable and reliable pick-up position for the subsequent feeding and pressing mechanism 3.

[0021] like Figure 4 As shown, the feeding drive mechanism 6 includes at least two feeding drivers 61. Each feeding driver 61 is installed on the lower side of the bottom of the feeding trough 1 and located inside the U-shaped support plate 12, ensuring uniform force distribution and stable operation during the lifting action. The output end of each feeding driver 61 is equipped with a lifting rod 62. The lifting rod 62 is fixed using a detachable connection, allowing for quick replacement of the appropriate size lifting rod 62 according to the arrow shaft diameter, ensuring that only one arrow shaft is lifted at a time. The end of the lifting rod 62 is inclined, with the inclination angle consistent with that of the guide slope 11. This ensures a smooth transition of the arrow shaft to the guide slope 11 after being lifted, preventing jamming and guaranteeing stable arrow shaft posture and consistent direction.

[0022] like Figure 4 As shown, a diameter-limiting material distribution mechanism 7 is installed on the discharge side of the feeding trough 1, above the guide slope 11. The diameter-limiting material distribution mechanism 7 includes a mounting base 71, an adjusting frame 72, and a pressure foot 73. The mounting base 71 is fixedly installed on the frame, the adjusting frame 72 is movably mounted on the mounting base 71, and the pressure foot 73 is fixedly installed on the adjusting frame 72. The bottom surface of the pressure foot 73 is parallel to the guide slope 11, forming a passage gap between them for the arrow shafts to pass through. This achieves the orderly arrangement of the arrow shafts, allowing them to be arranged sequentially within the gap and enter the next process one by one, eliminating material jamming and material breakage problems, and ensuring the continuity and stability of the feeding process. The adjusting frame 72 can drive the pressure foot 73 to move, thereby adjusting the size of the passage gap to adapt to the feeding needs of arrow shafts with different diameter specifications, intercepting and screening arrow shafts with excessively large diameters, and preventing them from entering the subsequent slitting process.

[0023] like Figure 4 As shown, the adjusting frame 72 is slidably mounted on the mounting base 71 via the adjusting mechanism 8. The adjusting mechanism 8 includes an adjusting handwheel 81 and a drive rod 82. The adjusting handwheel 81 is rotatably mounted on the mounting base 71. The outer wall of the drive rod 82 is provided with external threads, and the adjusting frame 72 is provided with a matching internal threaded hole. The drive rod 82 and the adjusting frame 72 form a threaded connection. The mounting base 71 is provided with a vertical slide groove, and the adjusting frame 72 is slidably accommodated in the slide groove. Rotating the adjusting handwheel 81 can drive the drive rod 82 to rotate, thereby driving the adjusting frame 72 to move up and down along the vertical slide groove, realizing precise adjustment of the passage gap. The threaded connection has good self-locking performance, which can ensure that the position of the pressure foot 73 remains stable for a long time after adjustment.

[0024] like Figure 5As shown, the main spindle power mechanism 2 is fixedly mounted on the frame, providing stable power for the rotation and conveying of the arrow shaft. The main spindle power mechanism 2 includes two opposing main spindle seats 21, a main spindle 22, a main spindle pulley 23, a transmission belt, and a main spindle driver 24. The two main spindle seats 21 are fixedly mounted on the frame, and the main spindle 22 is rotatably mounted between the two main spindle seats 21. The two ends are firmly supported, and the rotational coaxiality is high, effectively reducing operating vibration and noise. The main spindle pulley 23 is fixedly mounted at one end of the main spindle 22. The main spindle driver 24 is driven by the main spindle pulley 23 through the transmission belt. The belt drive method ensures smooth transmission and good buffering, guaranteeing that the main spindle 22 drives the feeding disc 31 to rotate at a uniform speed, thereby ensuring a consistent arrow shaft conveying speed.

[0025] like Figure 1 , 6 As shown, the feeding and pressing mechanism 3 includes a feeding gear 31 and a pressing assembly 32. The feeding gear 31 is detachably and fixedly mounted on the rotating shaft of the main shaft 22 via a gear locking sleeve 33, and is coaxially fixed with the main shaft 22. It can rotate synchronously with the main shaft 22, and is easy to disassemble and maintain. The outer circumferential surface of the feeding gear 31 is provided with limiting teeth 311, pressing grooves 312 and cutting grooves 313. Multiple limiting teeth 311 are evenly distributed along the circumferential direction. The pressing grooves 312 and cutting grooves 313 are respectively opened between two adjacent limiting teeth 311 and are separated from each other circumferentially by the limiting teeth 311. The pressing grooves 312 are specifically used to accommodate the pressing of the gear 31 to achieve stable pressing. The cutting grooves 313 are circumferential annular grooves opened along the outer circumferential surface of the feeding gear 31, providing non-interference clearance space for the cutter 41. In this embodiment, four sets of feeding and pressing mechanisms 3 are provided.

[0026] The pressure assembly 32 is positioned above the feeding jaw 31 and includes a pressure roller mounting base 321, pressure rollers 322, and a jaw slab pressure band. Two pressure rollers 322 are rotatably mounted on the pressure roller mounting base 321 and are located on opposite sides of the feeding jaw 31. The pressure rollers 322 contact the feeding jaw 31 via elastic elements. The upper surface of the feeding jaw 31 is higher than the bottom of the pressure rollers 322, allowing the jaw slab pressure band to adaptively conform to and press firmly within the pressure band groove 312, consistently applying a downward vertical pressure force to the arrow shaft within the wrap angle range. The jaw slab pressure band is sleeved on the outside of the two pressure rollers 322 and stably embedded within the pressure band groove 312. It can passively rotate synchronously with the feeding jaw 31, simultaneously applying continuous pressure to multiple arrow shafts within the cutting area, preventing the arrow shafts from rolling, twisting, or shifting during cutting, thus ensuring cutting accuracy.

[0027] like Figure 1 , 6As shown, the slitting actuator 4 is positioned near the feeding gear 31 and includes a cutter 41 and a cutting driver 42. The cutter 41 is fixedly mounted on the output end of the cutting driver 42 and is driven by the cutting driver 42 to perform the cutting action. The cutter 41 partially extends into the slitting groove 313 of the feeding gear 31, forming a precise cutting fit with the feeding gear 31. The slitting actuator 4 is divided into an end slitting actuator and a middle slitting actuator. Both mechanisms are independently equipped with a cutting driver 42 and a cutter 41, and can be independently controlled and work in coordination. They can operate simultaneously to achieve synchronous segmentation of both ends and the middle of the arrow shaft, or the end slitting actuator can be used alone to perform end cutting, making it highly adaptable to different processes.

[0028] like Figure 2 , 3 As shown in Figure 5, a position adjustment mechanism 5 is also provided on the frame. The position adjustment mechanism 5 includes a horizontal spacing adjustment component 51 and a middle lifting adjustment component 52. The horizontal spacing adjustment component 51 is connected to the cutting execution mechanism 4, and the middle lifting adjustment component 52 is connected to the middle cutting execution mechanism. The horizontal spacing adjustment component 51 includes a support plate 511, a slide rail 512, a slider 513, a sliding base plate 514, a position adjustment driver 515, and a transmission screw 516. The support plate 511 is fixedly installed on the frame, the slide rail 512 is horizontally arranged on the support plate 511, the slider 513 slides with the slide rail 512, and the sliding base plate 514 is fixedly connected to the slider 513 to form a stable horizontal guide structure. The cutting driver 42 and the pressure roller mounting seat 321 are both fixedly installed on the sliding base plate 514, which can realize synchronous linkage adjustment of the cutting position and the pressing position. The output end of the position adjustment driver 515 is connected to the transmission screw 516. The transmission screw 516 is in transmission cooperation with the sliding base plate 514, driving the sliding base plate 514 to move horizontally, accurately adjusting the horizontal position of the cutting actuator 4, and adapting to the cutting requirements of arrow shafts of different lengths.

[0029] The central lifting and adjusting assembly 52 includes a lifting moving plate 521 and a lifting driver 522. The lifting moving plate 521 is slidably mounted on the corresponding sliding base plate 514, and the lifting driver 522 is fixed on the supporting upright plate 511, with its output end connected to the lifting moving plate 521. The cutting driver 42 and the pressure roller mounting base 321 are both fixedly mounted on the lifting moving plate 521 and rise and fall synchronously with the lifting moving plate 521, which can quickly realize the switching between the "working position" and the "avoidance position" of the central cutting actuator. When descending, the cutter 41 enters the cutting groove 313 to perform cutting, and when rising, it completely separates from the arrow rod conveying path to avoid interference and meet the needs of diverse processing techniques.

[0030] like Figure 2As shown, a cooling circulating water tank 9 is also provided, which is made of 304 stainless steel plate; a sedimentation area is set inside the tank, a drain outlet is set on one side of the bottom of the tank 9, and an inlet and an outlet are opened on the top of the tank 9; the cooling water for cooling the cutter enters the tank through the inlet, flows to the outlet after sedimentation, and the external circulation pump delivers the sedimented clean water to the cutter through the outlet to realize the recycling of cooling water.

[0031] During equipment operation, the clearance of the limiting and distributing mechanism 7 is first adjusted by the adjusting mechanism 8 to match the diameter of the arrow shaft to be processed. A batch of arrow shafts are placed into the feeding trough 1, and the arrow shafts move towards the discharge side under gravity. The backing plate axially limits the ends of the arrow shafts, keeping them aligned. The feeding driver 61 drives the top rod 62 to lift upwards, smoothly feeding a single arrow shaft to the guide slope 11. The arrow shaft slides down the slope, and qualified arrow shafts move through the clearance to the limiting tooth 311. The main shaft driver 24 drives the main shaft 22 and the feeding disc 31 to rotate at a uniform speed via belt drive. The arrow shafts are then fed to below the pressing assembly 32, where the disc presses the arrow shafts firmly within the pressing groove 312, keeping them relatively stationary with the feeding disc 31. When the arrow shaft rotates with the feeding jaw 31 to the corresponding position of the slitting actuator 4, the cutter 41 is partially located in the slitting groove 313. Driven by the cutting driver 42, the cutter 41 rotates to complete the precise cutting. After being cut, the arrow shaft section continues to rotate with the feeding jaw 31, and after leaving the clamping area, it is automatically unloaded under the action of gravity. The cutting position and working mode can be flexibly adjusted through the position adjustment mechanism 5. The whole machine realizes continuous, stable, and high-precision automated arrow shaft cutting operation. It has strong versatility and wide adaptability, and can meet the batch slitting processing needs of various round rod-shaped workpieces.

[0032] This application has a wide range of applications. It can not only stably realize continuous feeding and precise cutting of arrow shafts, but also, with its universal clamping and cutting adaptation structure, it can be widely used for the cutting and processing of various round rod-shaped products. The whole machine has a compact structure, stable and reliable operation, and combines high precision, high efficiency and strong versatility. It can meet the batch automated cutting needs of round rod workpieces of different specifications and types.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. An automatic arrow shaft cutting machine, comprising a frame, wherein a feeding trough (1) and a feeding drive mechanism (6) are provided on the frame; characterized in that, Also includes: Main spindle power mechanism (2); The feeding and pressing mechanism (3) includes a feeding chuck (31) mounted on the main shaft power mechanism (2) and a pressing assembly (32) correspondingly disposed above the feeding chuck (31). The cutting actuator (4) includes a cutter (41) for cutting the arrow shaft on the feeding toothed disc (31).

2. The automatic arrow shaft cutting machine according to claim 1, characterized in that, The outer circumferential surface of the feeding disc (31) is provided with limiting teeth (311) and pressure groove (312). The pressing assembly (32) includes a pressure roller mounting seat (321), a pressing roller (322) and a disc pressing belt. The two pressing rollers (322) are rotatably mounted on the pressure roller mounting seat (321). The disc pressing belt is sleeved on the outside of the two pressing rollers (322) and the disc pressing belt is placed in the pressing groove (312).

3. An automatic arrow shaft cutting machine according to claim 2, characterized in that, Two pressure rollers (322) are respectively disposed on both sides of the feeding chuck (31). The pressure rollers (322) are in contact with the feeding chuck (31) through elastic elements. The upper surface of the feeding chuck (31) is higher than the bottom of the pressure rollers (322). The chuck pressure band is pressed tightly against the pressure band groove (312). The feeding chuck (31) is detachably and fixedly mounted on the rotating shaft of the main shaft power mechanism (2) through the chuck locking sleeve (33).

4. An automatic arrow shaft cutting machine according to claim 2, characterized in that, The slitting actuator (4) further includes a cutting driver (42), and the cutter (41) is fixedly installed at the output end of the cutting driver (42). The slitting actuator (4) includes an end slitting actuator and a middle slitting actuator. The end slitting actuator and the middle slitting actuator each independently include the cutting driver (42) and the cutter (41).

5. An automatic arrow shaft cutting machine according to claim 4, characterized in that, The limiting teeth (311) are provided in multiple ways. The outer circumferential surface of the feeding toothed disc (31) is also provided with a cutting groove (313). The pressing groove (312) and the cutting groove (313) are respectively opened between two adjacent limiting teeth (311). The pressing groove (312) and the cutting groove (313) are circumferentially separated from each other by the limiting teeth (311). The cutting groove (313) is a circumferential annular groove opened along the outer circumferential surface of the feeding toothed disc (31). The cutter (41) is partially placed in the cutting groove (313).

6. An automatic arrow shaft cutting machine according to claim 4, characterized in that, A position adjustment mechanism (5) is also provided, which includes a horizontal spacing adjustment component (51) and a middle lifting adjustment component (52). The horizontal spacing adjustment component (51) is connected to the cutting execution mechanism (4), and the middle lifting adjustment component (52) is connected to the middle cutting execution mechanism. The horizontal spacing adjustment component (51) includes a support plate (511), a slide rail (512), a slider (513), a sliding base plate (514), a position adjustment driver (515), and a transmission screw (516). 1) The slide rail (512) is fixedly installed on the frame and horizontally arranged on the support plate (511). The slider (513) is slidably engaged on the slide rail (512). The sliding base plate (514) is fixedly connected to the slider (513). The cutting driver (42) and the pressure roller mounting seat (321) are both fixedly installed on the sliding base plate (514). The output end of the position adjustment driver (515) is connected to the transmission screw (516). The transmission screw (516) is engaged with the sliding base plate (514).

7. An automatic arrow shaft cutting machine according to claim 6, characterized in that, The middle lifting adjustment assembly (52) includes a lifting moving plate (521) and a lifting driver (522); the lifting moving plate (521) is slidably installed on the corresponding sliding base plate (514), the lifting driver (522) is fixed on the supporting upright plate (511), the output end of the lifting driver (522) is connected to the lifting moving plate (521), and the cutting driver (42) and the pressure roller mounting seat (321) are both fixedly installed on the lifting moving plate (521).

8. An automatic arrow shaft cutting machine according to claim 1, characterized in that, The main spindle power mechanism (2) includes two spindle seats (21), a main spindle (22), a main spindle pulley (23), a transmission belt, and a main spindle driver (24); the two spindle seats (21) are arranged opposite to each other on the frame, the main spindle (22) is rotatably mounted between the two spindle seats (21), the main spindle pulley (23) is located at one end of the main spindle (22), and the main spindle driver (24) drives the main spindle pulley (23) through the transmission belt.

9. An automatic arrow shaft cutting machine according to claim 1, characterized in that, The feeding trough (1) has a guide slope (11) on the discharge side and a diameter-limiting material distribution mechanism (7). The diameter-limiting material distribution mechanism (7) includes a mounting base (71), an adjusting frame (72) movably mounted on the mounting base (71), and a pressure foot (73) mounted on the adjusting frame (72). The bottom surface of the pressure foot (73) is parallel to the guide slope (11). The feeding trough (1) includes at least two parallel and oppositely arranged U-shaped support plates (12). The bottom of the feeding trough (1) faces the discharge side as a whole. The feeding drive mechanism (6) is inclined downwards and includes at least two feeding drivers (61). The output end of the feeding driver (61) is provided with a top rod (62). The feeding drivers (61) are all installed on the lower side of the bottom of the feeding trough (1) and located inside the U-shaped support plate (12). The top rod (62) is detachably connected to the output end of the feeding driver (61). The end of the top rod (62) is inclined and the inclination angle is consistent with the inclination angle of the guide slope (11).

10. An automatic arrow shaft cutting machine according to claim 9, characterized in that, The adjusting frame (72) is slidably mounted on the mounting base (71) via the adjusting mechanism (8). The adjusting mechanism (8) includes an adjusting handwheel (81) and a drive rod (82). The adjusting handwheel (81) is mounted on the mounting base (71). The drive rod (82) has an external thread on its outer wall. The adjusting frame (72) has a matching internal thread hole. The drive rod (82) is threadedly connected to the adjusting frame (72). The mounting base (71) has a vertical sliding groove. The adjusting frame (72) is slidably accommodated in the sliding groove.

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