Long bamboo section saw kerf through joint equipment

Abstract

The invention discloses a long bamboo section saw seam unblocking device, and belongs to the technical field of bamboo wood processing. The long bamboo section saw seam through joint equipment comprises a seam cutting assembly which comprises a U-shaped saw frame and a rope saw, and the rope saw is fixed to the lower portion of the U-shaped saw frame through a fastening screw; a pair of mounting frames is arranged along the length direction of the U-shaped saw frame; the first adjusting assemblies are arranged in one-to-one correspondence with the mounting frames, each first adjusting assembly comprises a lifting motor, a first adjusting screw, an adjusting block and a bearing plate, the first adjusting screws are fixedly connected with the output ends of the lifting motors, the bearing plates are horizontally and fixedly connected to one sides of the mounting frames, and the first adjusting screws are sleeved with the adjusting blocks in a threaded mode; the supporting frame is horizontally arranged, the two ends of the supporting frame are hinged to the adjusting blocks in the corresponding adjusting assemblies respectively, and the U-shaped saw frame is horizontally embedded in the bottom of the supporting frame in a sliding mode. Through cooperative control of the lifting motor and the slider-crank mechanism, a dynamic matching dip angle is formed between the saw track and the axis of the bamboo section, and the problem of cutter deviation caused by traditional vertical saw cutting is avoided.

Description

Technical Field

[0001] This invention relates to the field of bamboo processing technology, specifically to a device for sawing and unblocking joints in long bamboo sections. Background Technology

[0002] The efficient and high-value utilization of bamboo is of great significance to serving the national strategies of "replacing plastic with bamboo" and "dual carbon". However, its natural structure, such as hollow cylindrical shape, conical shape, and bamboo joint barriers, severely restricts the efficiency of industrial processing. The core pretreatment steps of sawing and joint clearing in the flattening of whole bamboo and the preparation of high-end structural materials currently rely mostly on manual or single-machine step-by-step operations, which makes it difficult to meet the requirements of high-performance bamboo industrial products for "replacing plastic with bamboo" and long-length high-end structural materials that meet modern building standards.

[0003] Existing bamboo segment cutting devices use vertical sawing or fixed-angle entry when sawing long bamboo segments. However, the diameters at both ends of a long bamboo segment are not the same. When using vertical sawing or fixed-angle entry, the device cannot adapt to the natural taper of the bamboo, resulting in the saw path deviating and damaging the bamboo wall. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems in the prior art and provide a long bamboo section sawing kerf device that allows the wire saw to adapt to the natural taper of the bamboo and avoids saw kerf deviation that could damage the bamboo wall.

[0005] This invention provides a long bamboo section sawing and joint-clearing device, including a sawing assembly comprising a U-shaped saw frame and a wire saw, the wire saw being fixed to the bottom of the U-shaped saw frame by fastening screws; a pair of mounting frames arranged along the length of the U-shaped saw frame for supporting both ends of the U-shaped saw frame; a pair of first adjustment components, each corresponding to one of the mounting frames, the first adjustment component including a lifting motor, a first adjusting screw, an adjusting block, and a support plate, the lifting motor being fixedly mounted on the mounting frame with its output end facing downwards, the first adjusting screw being fixedly connected to the output end of the lifting motor, the support plate being horizontally fixedly connected to one side of the mounting frame, the bottom end of the first adjusting screw being rotatably connected to the support plate, and the adjusting block being threaded onto the first adjusting screw; a support frame, horizontally arranged, with both ends hinged to the adjusting blocks corresponding to the first adjustment components, the U-shaped saw frame being horizontally slidably embedded in the bottom of the support frame; and a drive assembly, disposed on the support frame, for driving the U-shaped saw frame to reciprocate.

[0006] Preferably, the drive assembly includes a rotary motor, a crank, a connecting rod, and a connecting rod. The rotary motor is fixedly connected to the top of the support frame. A sliding groove is vertically opened through the support frame. The connecting rod is slidably disposed in the sliding groove. Its bottom end is fixedly connected to the U-shaped saw frame, and its top end is hinged to the connecting rod. The output end of the rotary motor is fixedly connected to the crank, and the connecting rod is hinged to the edge of the crank.

[0007] Preferably, a pair of limiting grooves are provided on one side of the support frame, and a limiting pin is slidably embedded in each of the pair of limiting grooves. The limiting pin is fixedly connected to the U-shaped saw frame.

[0008] Preferably, the device also includes a frame, with the mounting bracket fixedly connected to the frame. Several limiting components are provided on both sides of the U-shaped saw frame. Each limiting component includes a first fixed seat, a roller frame, a roller motor, and a drive roller. The first fixed seat is horizontally fixedly connected to the top of the frame. The roller frame is slidably connected to the first fixed seat. The roller motor is fixed inside the roller frame, and its output end is rotatably connected to the roller frame. A pair of drive rollers are provided, each located on one side of the roller motor and rotatably connected to the roller frame via a rotating shaft. A first pulley is fitted onto the output shaft of the roller motor, and a second pulley is fitted onto each of the pair of rotating shafts. The first pulley and the second pulley are connected via a transmission belt.

[0009] Preferably, the first fixed base has a through groove, and a pulley is fixedly connected to the bottom of the roller frame, with the pulley disposed in the through groove.

[0010] Preferably, the first fixed base is provided with a second adjusting component, the second adjusting component including a second fixed base, a through-type lead screw motor and a second adjusting screw, the second fixed base is fixedly connected to the first fixed base, the second adjusting screw is horizontally inserted into the second fixed base, the second adjusting screw is connected to the through-type lead screw motor, a motor fixing plate is fixedly connected to one side of the roller frame, and the through-type lead screw motor is fixedly connected to the motor fixing plate.

[0011] Preferably, the diameters of the active rollers in the limiting components located on the same side are set in a gradient.

[0012] Preferably, the front end of the frame is provided with a feeding trolley, the bottom of the feeding trolley is fixedly connected with several first rollers, and the frame is provided with a track for limiting the first rollers.

[0013] Preferably, the rear end of the frame is provided with a guide car, the bottom of the guide car is fixedly connected with several second rollers, the frame is provided with a track for limiting the second rollers, and the top of the guide car is fixedly connected with a guide rod through a support plate.

[0014] Preferably, the top of the feeding vehicle is fixedly connected to an arc-shaped support plate, and the top of the arc-shaped support plate is provided with an anti-roll clamp.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The long bamboo section sawing and joint-opening device of the present invention drives the first adjusting screw to rotate through the set lifting motor, thereby moving the adjusting block in the vertical direction. Since the two ends of the support frame are hinged to the adjusting block, there is a certain height difference between the two ends of the support frame, which can ensure that the sawing track matches the bamboo taper, maintain the uniform horizontal distance between the top and the surface of the bamboo section, and avoid processing deviation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the overall exploded structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the slit cutting assembly and drive assembly of the present invention.

[0019] Figure 4 This is an exploded structural diagram of the slit cutting assembly and the drive assembly of the present invention.

[0020] Figure 5 This is a schematic diagram of the limiting component and the second adjusting component of the present invention.

[0021] Figure 6 This is an exploded view of the limiting component and the second adjusting component of the present invention.

[0022] Figure 7 This is a schematic diagram of the active roller structure of the present invention.

[0023] Explanation of reference numerals in the attached drawings: 1. Cutting assembly; 101. U-shaped saw frame; 102. Wire saw; 2. Mounting frame; 3. First adjusting assembly; 301. Lifting motor; 302. First adjusting screw; 303. Adjusting block; 304. Bearing plate; 4. Support frame; 5. Drive assembly; 501. Rotary motor; 502. Crank; 503. Connecting rod; 504. Connecting rod; 6. Limiting groove; 7. Limiting pin; 8. Frame; 9. Limiting assembly; 90 1. First fixed seat; 902. Active roller; 903. Roller frame; 904. Roller motor; 10. Through slot; 11. Pulley; 12. Second adjusting assembly; 121. Second fixed seat; 122. Through-type lead screw motor; 123. Second adjusting screw; 13. Motor fixing plate; 14. Feeding trolley; 15. First roller; 16. Through section trolley; 17. Second roller; 18. Arc support plate; 19. Anti-roll clamp; 20. Through rod. Detailed Implementation

[0024] The following is in conjunction with the appendix Figures 1-7To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described 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. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art.

[0025] The terms "first," "second," and similar words used in the patent application specification and claims of this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "inner," "outer," "upper," "lower," "far," "near," "front," and "rear" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. The drawings in this invention are not strictly drawn to scale; the specific dimensions and quantity of each structure can be determined according to actual needs. The drawings described in this invention are merely structural schematic diagrams.

[0026] This invention provides a device for sawing joints in long bamboo sections, such as... Figures 1-4 As shown, the assembly includes a kerf cutting component 1, comprising a U-shaped saw frame 101 and a wire saw 102, the wire saw 102 being fixed to the bottom of the U-shaped saw frame 101 by fastening screws; a mounting frame 2, a pair arranged along the length of the U-shaped saw frame 101, for supporting both ends of the U-shaped saw frame 101; and a first adjustment component 3, a pair arranged corresponding to the pair of mounting frames 2, the first adjustment component 3 including a lifting motor 301, a first adjusting screw 302, an adjusting block 303, and a support plate 304, the lifting motor 301 being fixedly mounted on the mounting frame 2 with its output end facing... Below, the first adjusting screw 302 is fixedly connected to the output end of the lifting motor 301, the bearing plate 304 is horizontally fixedly connected to one side of the mounting frame 2, the bottom end of the first adjusting screw 302 is rotatably connected to the bearing plate 304, and the adjusting block 303 is threadedly sleeved on the first adjusting screw 302; the support frame 4 is horizontally set, and its two ends are respectively hinged to the adjusting block 303 in the corresponding first adjusting component 3, and the U-shaped saw frame 101 is horizontally slidably embedded in the bottom of the support frame 4; the drive component 5 is set on the support frame 4 and is used to drive the U-shaped saw frame 101 to reciprocate.

[0027] In this embodiment, the lifting motor 301 drives the first adjusting screw 302 to rotate, thereby moving the adjusting block 303 in the vertical direction. Since the two ends of the support frame 4 are hinged to the adjusting block 303, there is a certain height difference between the two ends of the support frame 4, which can ensure that the saw kerf trajectory matches the bamboo taper, maintain the uniform horizontal distance between the top and the surface of the bamboo segment, and avoid processing deviation.

[0028] The wire saw 102, positioned near the larger end of the bamboo segment, should have its cutting reference plane raised 1 cm higher than the smaller end, creating a 0.2-degree angle between the saw kerf and the bamboo segment's axis. This ensures the saw kerf path matches the bamboo's taper, maintains a uniform horizontal distance between the top and the bamboo segment's surface, and prevents processing deviations.

[0029] Preferred, such as Figures 1-4 As shown, the drive assembly 5 includes a rotary motor 501, a crank 502, a connecting rod 503, and a connecting rod 504. The rotary motor 501 is fixedly connected to the top of the support frame 4. A sliding groove is vertically opened through the support frame 4. The connecting rod 504 is slidably disposed in the sliding groove. Its bottom end is fixedly connected to the U-shaped saw frame 101, and its top end is hinged to the connecting rod 503. The output end of the rotary motor 501 is fixedly connected to the crank 502, and the connecting rod 503 is hinged to the edge of the crank 502.

[0030] In this embodiment, the rotary motor 501 drives the crank 502 to rotate, which is converted into the sliding motion of the connecting rod 504 via the connecting rod 503, driving the U-shaped saw frame 101 to reciprocate. Compared with traditional fixed sawing, this design achieves high-frequency saw cuts, avoiding bamboo node residue caused by saw kerf interruption; at the same time, the crank 502 and connecting rod 503 mechanism linearizes the rotational motion, reducing energy loss. During the bamboo segment rotational feed, the wire saw 102 cuts the bamboo node at a synchronous rate. In addition, the sliding groove limits the displacement range of the connecting rod 504, preventing the U-shaped saw frame 101 from overshooting and improving the equipment lifespan.

[0031] Preferred, such as Figures 1-4 As shown, a pair of limiting grooves 6 are provided on one side of the support frame 4, and a limiting pin 7 is slidably embedded in each of the pair of limiting grooves 6. The limiting pin 7 is fixedly connected to the U-shaped saw frame 101.

[0032] In this embodiment, the stability of the U-shaped saw frame 101 is enhanced to prevent displacement deviation and ensure taper matching accuracy. A limiting groove 6 is formed along the side of the support frame 4, and a limiting pin 7 is slidably embedded within it, forming a rigid guide structure. During the reciprocating motion of the wire saw 102, this design constrains the horizontal degree of freedom of the U-shaped saw frame 101, reducing vibration amplitude and preventing saw kerf deviation. In traditional equipment, saw frame swaying causes a mismatch between the saw kerf and the bamboo segment taper. The cooperation between the limiting pin 7 and the limiting groove 6 absorbs radial force and prevents slippage.

[0033] Preferred, such as Figures 5-7As shown, it also includes a frame 8, with a mounting bracket 2 fixedly connected to the frame 8. Several limiting components 9 are provided on both sides of the U-shaped saw frame 101. The limiting components 9 include a first fixed seat 901, a roller frame 903, a roller motor 904, and an active roller 902. The first fixed seat 901 is horizontally fixedly connected to the top of the frame 8. The roller frame 903 is slidably connected to the first fixed seat 901. The roller motor 904 is fixed inside the roller frame 903, and its output end is rotatably connected to the roller frame 903. A pair of active rollers 902 are provided, and the pair of active rollers 902 are provided on one side of the roller motor 904. They are all rotatably connected to the roller frame 903 through a rotating shaft. A first pulley is sleeved on the output shaft of the roller motor 904, and a second pulley is sleeved on each of the pair of rotating shafts. The first pulley and the second pulley are connected through a transmission belt. The diameters of the active rollers 902 in the limiting components 9 on the same side are arranged in a gradient.

[0034] In this embodiment, in the limiting component 9, four sets of active rollers 902 are evenly distributed around the bamboo segment and driven by roller motors 904 to form a synchronous rotational force field. The diameter gradient of the active rollers 902 is 3.5cm at the large end and 5cm at the small end, with a ratio of 7:10, which is very close to the bamboo segment's taper ratio of 6:7. The tolerance is compensated by a polyurethane coating layer, maximizing the contact area. When the bamboo segment rotates, the gradient design ensures uniform torque transmission, small speed error, and avoids the pressure imbalance problem of traditional equal-diameter rollers.

[0035] The bamboo segment is radially clamped and driven to rotate circumferentially by the synchronous rotation of four active rollers 902 on the left and right sides, thus realizing the bamboo feeding during the processing. Each active roller 902 is designed as a three-section truncated cone, which conforms to the natural taper of bamboo. The active roller 902 compensates for the deformation difference through an elastic coating layer to maximize contact.

[0036] Preferred, such as Figures 5-6 As shown, a through groove 10 is provided on the first fixed base 901, and a pulley 11 is fixedly connected to the bottom of the roller frame 903. The pulley 11 is set in the through groove 10.

[0037] In this embodiment, the pulley 11 is embedded in the through groove 10 to form a low-friction sliding pair, which reduces the adjustment resistance of the roller frame 903. When clamping the bamboo segment, the pulley 11 ensures that the roller frame 903 moves horizontally smoothly and avoids the bamboo segment from shifting due to vibration. At the same time, the through groove 10 limits the stroke of the pulley 11, so that the roller group composed of the active roller 902 can quickly align with the axis of the bamboo segment.

[0038] Preferred, such as Figures 5-6As shown, a second adjustment assembly 12 is provided on the first fixed base 901. The second adjustment assembly 12 includes a second fixed base 121, a through-type lead screw motor 122, and a second adjustment screw 123. The second fixed base 121 is fixedly connected to the first fixed base 901. The second adjustment screw 123 is horizontally inserted into the second fixed base 121 and is connected to the through-type lead screw motor 122. A motor fixing plate 13 is fixedly connected to one side of the roller frame 903, and the through-type lead screw motor 122 is fixedly connected to the motor fixing plate 13.

[0039] In this embodiment, the second adjusting screw 123 is horizontally inserted and drives the roller frame 903 to move via a through-type lead screw motor 122. Before clamping the bamboo segment, this component automatically adjusts the roller spacing and sets the roller position based on the bamboo segment diameter data to ensure taper matching. Compared to manual adjustment, the clamping force is evenly distributed, eliminating the risk of slippage. At the same time, the motor fixing plate 13 enhances structural rigidity, reduces vibration, and extends the equipment life. This design improves the level of automation and increases processing efficiency.

[0040] Preferred, such as Figures 1-6 As shown, a feeding cart 14 is provided at the front end of the frame 8, and several first rollers 15 are fixedly connected to the bottom of the feeding cart 14. The frame 8 is provided with a track for limiting the first rollers 15.

[0041] In this embodiment, the bottom rollers of the feeding trolley 14 slide along the track of the frame 8. The arc-shaped support plate and the anti-roll clamp 19 fix the bamboo segment to prevent it from rolling. This design enables one-click feeding when the bamboo segment is pushed in during the first step, and the track limit ensures that the axis of the bamboo segment is aligned with the roller shaft assembly, reducing adjustment time. Combined with the anti-roll clamp 19, the risk of bamboo segment slippage is reduced, improving operational safety.

[0042] Preferred, such as Figures 1-6 As shown, the rear end of the frame 8 is provided with a passage carriage 16, and several second rollers 17 are fixedly connected to the bottom of the passage carriage 16. The frame 8 is provided with a track for limiting the second rollers 17, and a passage rod 20 is fixedly connected to the top of the passage carriage 16 through a support plate.

[0043] In this embodiment, the bamboo section clearing vehicle 16 moves along a track, and the support plate fixes the bamboo section clearing rod 20. In the fifth step, the bamboo section clearing rod 20 pushes out the sawn bamboo section and falls into the discharge port. This design replaces the traditional drilling method, achieving residue-free removal; at the same time, the bamboo section automatically falls into the discharge port after the roller assembly is removed, reducing manual intervention. Processing a single bamboo section takes less time, improving efficiency, and the bamboo section clearing rod 20 has a simple structure and low maintenance cost.

[0044] Preferably, the top of the feeding cart 14 is fixedly connected to an arc-shaped support plate, and the top of the arc-shaped support plate is provided with an anti-roll clamp 19.

[0045] In this embodiment, feeding stability and compatibility are enhanced to prevent rolling damage to bamboo segments. An arc-shaped support plate conforms to the outer wall of the bamboo segment, and anti-rolling clamps 19 hold the tail end, forming multi-point fixation. During the first step of pushing in long bamboo segments, this design adapts to bamboo of different diameters, with uniform clamping force distribution; there is no slippage during the pushing process, and the positional accuracy reaches ±1mm, ensuring precise clamping by the subsequent roller assembly. This reduces surface scratches on the bamboo segments, increases the yield by 5%, and is easy to operate, supporting high-speed continuous operation.

[0046] The method of using the long bamboo section sawing and joint-opening device of the present invention is as follows: The operator places a 2.5-meter-long bamboo segment on the curved support plate of the feeding trolley 14, with the smaller end in front and the larger end behind, and clamps it with anti-roll blocks 19 to prevent it from rolling. The feeding trolley 14 is then pushed along the track of the frame 8 to transport the bamboo segment to the roller assembly area. The first roller 15 at the bottom of the feeding trolley 14 is limited by the track to ensure that the axis of the bamboo segment is aligned with the center of the roller assembly, ready for clamping.

[0047] The roller assembly starts, and the four sets of active rollers 902 move synchronously towards the center, clamping the bamboo segment from a 90° axis of symmetry. The roller motor 904 drives the active rollers 902, ensuring synchronous rotation through a belt pulley transmission system. Simultaneously, the second adjustment component 12 fine-tunes the roller position to accommodate the bamboo segment's tapered end diameter of 9cm and its larger end diameter of 10.5cm. After clamping, the roller assembly secures the bamboo segment, preparing it for sawing.

[0048] The motor of the wire saw 102 starts, driving the connecting rod 504 to slide up and down within the sliding groove of the support frame 4 via the crank 502 and connecting rod 503, thus causing the U-shaped saw frame 101 and the wire saw 102 to perform high-frequency reciprocating motion. Simultaneously, the lifting motor 301 of the first adjusting component 3 drives the first adjusting screw 302 to move downwards, causing the wire saw 102 to contact the top of the bamboo segment at a 0.2° angle. The wire saw 102 cuts through the outer wall of the bamboo segment, with the saw path precisely matching the taper of the bamboo segment. The limiting pin 7 slides within the limiting groove 6, ensuring a stable saw cut.

[0049] The wire saw 102 operates continuously, with the roller motor driving the active roller to rotate synchronously, thus feeding the bamboo segment circumferentially. The tapered coupling design of the four sets of rollers ensures that the bamboo segment rotates without slippage, and the wire saw 102 cuts open the diaphragm along the bamboo nodes. The bamboo segment rotates automatically throughout the process, with a single bamboo segment processing time of approximately 1 minute.

[0050] The wire saw 102 moves upward and stops, the bamboo section clearing carriage 16 moves forward along the track, and the clearing rod 20 pushes out the sawn bamboo section, which falls into the discharge port below. At the same time, the roller assembly moves away, and the bamboo segment automatically falls into the bamboo segment discharge port, completing the section clearing process. This step removes residual bamboo sections, achieving fully automatic discharge; the entire process runs continuously, with a single machine processing up to 800 bamboo sections per day, requiring no manual intervention. The fifth step of the clearing process is highly efficient and thorough.

[0051] 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.

Claims

1. A device for sawing and unblocking joints in long bamboo sections, characterized in that, include; The kerfing assembly (1) includes a U-shaped saw frame (101) and a wire saw (102), wherein the wire saw (102) is fixed to the bottom of the U-shaped saw frame (101) by fastening screws; a pair of mounting brackets (2) are provided along the length of the U-shaped saw frame (101) for supporting the two ends of the U-shaped saw frame (101); The first adjustment component (3) is provided with a pair corresponding to the pair of mounting brackets (2). The first adjustment component (3) includes a lifting motor (301), a first adjusting screw (302), an adjusting block (303), and a support plate (304). The lifting motor (301) is fixedly mounted on the mounting bracket (2) with its output end facing downward. The first adjusting screw (302) is fixedly connected to the output end of the lifting motor (301). The support plate (304) is horizontally fixedly connected to one side of the mounting bracket (2). The bottom end of the first adjusting screw (302) is rotatably connected to the support plate (304). The adjusting block (303) is threaded onto the first adjusting screw (302). The drive assembly (5) is used to drive the U-shaped saw frame (101) to reciprocate. It is located on the horizontally set support frame (4). The two ends of the support frame (4) are respectively hinged to the adjustment block (303) in the first adjustment assembly (3). The U-shaped saw frame (101) is horizontally slidably embedded in the bottom of the support frame (4).

2. The long bamboo segment sawing and joint-opening device as described in claim 1, characterized in that, The drive assembly (5) includes a rotary motor (501), a crank (502), a connecting rod (503), and a connecting rod (504). The rotary motor (501) is fixedly connected to the top of the support frame (4). A sliding groove is vertically opened through the support frame (4). The connecting rod (504) is slidably disposed in the sliding groove. Its bottom end is fixedly connected to the U-shaped saw frame (101), and its top end is hinged to the connecting rod (503). The output end of the rotary motor (501) is fixedly connected to the crank (502), and the connecting rod (503) is hinged to the edge of the crank (502).

3. The long bamboo segment sawing and joint-opening device as described in claim 1, characterized in that, The support frame (4) has a pair of limiting grooves (6) on one side, and each pair of limiting grooves (6) is slidably embedded with a limiting pin (7), and the limiting pin (7) is fixedly connected to the U-shaped saw frame (101).

4. The long bamboo segment sawing and joint-opening device as described in claim 1, characterized in that, It also includes a frame (8), the mounting bracket (2) is fixedly connected to the frame (8), and the U-shaped saw frame (101) is provided with several limiting components (9) on both sides. The limiting components (9) include a first fixed seat (901), a roller frame (903), a roller motor (904), and an active roller (902). The first fixed seat (901) is horizontally fixedly connected to the top of the frame (8), the roller frame (903) is slidably connected to the first fixed seat (901), and the roller motor (902) is slidably connected to the first fixed seat (901). 904) is fixed inside the roller frame (903), and the output end is rotatably connected to the roller frame (903). A pair of active rollers (902) are provided. The pair of active rollers (902) are provided on one side of the roller motor (904) and are rotatably connected to the roller frame (903) through rotating shafts. A first pulley is sleeved on the output shaft of the roller motor (904), and a second pulley is sleeved on each of the pair of rotating shafts. The first pulley and the second pulley are connected by a transmission belt.

5. The long bamboo segment sawing and joint-opening device as described in claim 4, characterized in that, The first fixed base (901) has a through groove (10), and the bottom of the roller frame (903) is fixedly connected to a pulley (11), which is located in the through groove (10).

6. The long bamboo segment sawing and joint-opening device as described in claim 4, characterized in that, The first fixed base (901) is provided with a second adjustment component (12). The second adjustment component (12) includes a second fixed base (121), a through-type lead screw motor (122), and a second adjustment screw (123). The second fixed base (121) is fixedly connected to the first fixed base (901). The second adjustment screw (123) is horizontally inserted into the second fixed base (121). The second adjustment screw (123) is connected to the through-type lead screw motor (122). A motor fixing plate (13) is fixedly connected to one side of the roller frame (903). The through-type lead screw motor (122) is fixedly connected to the motor fixing plate (13).

7. The long bamboo segment sawing and joint-opening device as described in claim 4, characterized in that, The diameters of the active rollers (902) in the limiting assembly (9) located on the same side are set in a gradient manner.

8. The long bamboo segment sawing and joint-opening device as described in claim 4, characterized in that, The front end of the frame (8) is provided with a feeding cart (14), and the bottom of the feeding cart (14) is fixedly connected with several first rollers (15). The frame (8) is provided with a track for limiting the first rollers (15).

9. The long bamboo segment sawing and joint-opening device as described in claim 4, characterized in that, The frame (8) has a trolley (16) at the rear end. The bottom of the trolley (16) is fixedly connected with several second rollers (17). The frame (8) is provided with a track for limiting the second rollers (17). The top of the trolley (16) is fixedly connected with a through rod (20) through a support plate.

10. The long bamboo segment sawing and joint-opening device as described in claim 8, characterized in that, The top of the feeding trolley (14) is fixedly connected to an arc-shaped support plate (18), and the top of the arc-shaped support plate (18) is provided with an anti-roll clamp (19).

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