Bamboo fiber carding machine

Abstract

A bamboo fiber carding machine relates to the technical field of manufacturing of bamboo fibers for spinning and comprises a carding rack, a large cylinder is rotatably mounted on the carding rack, and a holding licker-in and a stripping licker-in are sequentially arranged on the feeding side of the large cylinder side by side in the feeding direction; a double-licker-in feeding structure is arranged on the feeding side of the holding licker-in; a transfer licker-in and a negative pressure roller are sequentially arranged on the discharging side of the large cylinder side by side in the discharging direction. A plurality of groups of coarse carding assemblies are arranged in the area, above the horizontal center line, of the large cylinder in a surrounding manner. The invention provides a natural bamboo fiber carding machine, which is used for realizing carding feeding, transitional feeding, step-by-step carding and lossless transfer on irregular cluster-shaped, bundle-shaped, longitudinal and transverse section thick natural bamboo fiber bundles with extremely non-uniform thickness distribution, and improves the carding quality of the thick natural bamboo fiber bundles, thereby ensuring that the finally obtained natural bamboo fiber finished product can be used for spinning.

Description

Technical Field

[0002] This invention relates to the field of manufacturing technology of bamboo raw fiber for spinnable yarn, and specifically to a bamboo raw fiber carding machine. Background Technology

[0003] Bamboo fiber is mainly divided into two categories based on processing methods: bamboo pulp fiber and bamboo virgin fiber. Bamboo pulp fiber is made through chemical pulping and regenerated spinning processes. It has a regular fiber shape, uniform length and fineness, and low entanglement, resulting in good spinnability. It has become the mainstream raw material for bamboo fiber spinning. However, the chemical treatment process also causes it to lose the original high strength, natural porous structure, and excellent antibacterial and moisture-permeable properties of bamboo.

[0004] In contrast, bamboo fiber is obtained directly from bamboo using physical and mechanical methods (such as rolling, cooking, and fiber separation). This process preserves the natural hollow cross-section, micropores, longitudinal and transverse joint structure, and inherent mechanical and functional properties of bamboo fiber to the greatest extent. Therefore, it possesses excellent moisture absorption and quick-drying properties, antibacterial and deodorizing properties, and UV protection, making it a highly valuable high-performance natural fiber. However, due to the highly irregular natural morphology, wide length distribution, high stiffness, rough surface, and tendency to entangle, bamboo fiber is currently mainly used in products with lower requirements for fiber morphology, such as insoles, filling materials, and nonwoven fabrics. It is difficult to directly use it to produce high-quality, high-count textile yarns. Therefore, how to enable bamboo fiber to be directly used in spinning has been a long-standing and unresolved technical challenge for the industry.

[0005] In the production of bamboo fiber from raw bamboo, the bamboo undergoes initial processing such as splitting, sorting, loosening, fiber opening, and softening to obtain coarse bamboo fiber bundles. These bundles are then sequentially sent to later processing steps such as combing and fine combing. The coarse bamboo fiber bundles formed in the initial processing stage have the following characteristics: they mainly exist in irregular clusters (irregular agglomeration) and clumps, lacking a fixed and regular structure and exhibiting significant volume differences. Some are tightly intertwined nodular aggregates, with fibers weaving into a dense and difficult-to-untangle network through surface friction, their own high hardness, and the connection between longitudinal and transverse nodes; others are loose flocculent clumps, with random and stubborn entanglement between fibers. Individual fibers are completely disordered in distribution within the fiber bundle, without a unified orientation, exhibiting a mixture of short and long fibers with extremely uneven thickness, large fluctuations in transverse diameter, alternation between thick and thin segments, and a tendency for short fibers to locally aggregate. The fiber bundles are extremely unstable and brittle, easily remodeling and tangling under slight external force, or breaking at the junctions of thick and thin fibers or at the nodes, making it impossible to maintain a stable transport shape. The residual natural gums, combined with high hardness and node characteristics, further enhance the bonding force between fibers, making dispersion extremely difficult. These characteristics determine that existing carding equipment suitable for bamboo pulp fibers or other natural fiber products cannot be directly used for coarse bamboo fiber bundles. Therefore, to process raw bamboo materials into bamboo fibers suitable for spinning, a specialized and innovative design of the carding equipment in the bamboo fiber manufacturing process is necessary.

[0006] The prior art discloses a patent with publication number CN101463508A, which relates to a bamboo fiber carding machine. This machine includes a feeding mechanism, a carding mechanism, a stripping mechanism, and a coiling mechanism arranged sequentially. The carding mechanism includes a large cylinder and a doffer. Four carding zones are located in the upper middle part of the large cylinder. Each carding zone has a working roller and a stripping roller. The large cylinder, doffer, working roller, and stripping roller all adopt a comb-needle structure. This machine is particularly suitable for carding bamboo fibers, significantly reducing fiber damage. Verification shows that the short fiber growth rate in the carded bamboo fiber sliver is less than 1.5%, and the sliver unevenness is less than 2%, resulting in a significant improvement in sliver quality. This, in turn, benefits the subsequent improvement of the quality and grade of the finished fabric.

[0007] Analysis revealed that the carding machine in the aforementioned patent is used to card the finished bamboo pulp fiber before spinning. By setting up multiple carding zones and employing a comb-like structure, it aims to reduce fiber damage, decrease the growth rate of short fibers, and reduce unevenness. This technology is suitable for the pre-spinning carding process where the fiber morphology is relatively regular and the degree of entanglement is low. Its design and target are fundamentally different from the coarse carding process in the manufacturing of bamboo fiber using raw bamboo materials, which is the focus of this invention. The aforementioned patent and the existing carding technologies it represents are all designed for processing finished bamboo pulp fiber products that are already spinnable, lacking the ability to specifically adapt to raw, coarse bamboo fiber bundles. Specifically: First, directly feeding the aforementioned irregularly clustered / clumped, severely entangled, disordered, and extremely unstable coarse bamboo fiber bundles into the carding machine directly results in the carding rollers breaking up the clustered fiber bundles during the carding process, affecting the final length and uniformity of the bamboo fiber, thus making the resulting bamboo fiber product unusable for spinning.

[0008] Secondly, because the material is fed to the carding machine from the hopper, the feeding amount of the coarse bamboo fiber bundles is not constant. When the raw material feeding amount fluctuates, especially when the feeding amount is too large, the raw material accumulates and blocks the material in the feeding gap. On the one hand, it is impossible to achieve continuous and stable feeding, which makes the equipment unable to work or even stop. On the other hand, it will also cause fiber breakage and entanglement due to compression, which will further affect the length of the finished bamboo fiber, so that the finished fiber bundles produced cannot be used for spinning.

[0009] Third, due to the aforementioned unique characteristics of the coarse bamboo fiber bundles entering the feed roller, the impact and friction on the needled surface of the licker-in roller are significantly amplified during the feeding process, making the needles extremely prone to wear and even damage. The existing licker-in rollers, with their needles integrally molded with the roller body, not only increase the processing difficulty and manufacturing cost of the licker-in roller itself, but also, after the needles wear frequently due to the aforementioned fiber characteristics, in order to ensure the feeding and processing effect of the coarse bamboo fiber bundles and to ensure that the bamboo fibers can be used for spinning, it is necessary to replace the entire licker-in roller as a whole, thus significantly increasing the production and maintenance costs of the equipment.

[0010] Fourth, in order to accommodate the significant brittleness of coarse bamboo fiber bundles, the pre-feeding device must use a low feeding speed. However, the large cylinder needs to maintain a rotation speed of several hundred revolutions per minute to ensure carding accuracy. This results in a large speed difference between the feeding speed and the rotation speed of the large cylinder, causing the coarse bamboo fiber bundles to be easily broken by the large cylinder when they come into contact with it. Furthermore, because the coarse bamboo fiber bundles are not uniformly processed in the pre-processing, these uneven bundles tend to adhere to the licker-in roller during feeding, directly affecting the subsequent carding accuracy and thus the length of the finished bamboo fiber product. Consequently, the resulting bamboo fiber product cannot be directly used for spinning.

[0011] Fifth, due to the different growing environments of bamboo from different origins, the raw material characteristics of bamboo from different origins used in the manufacture of bamboo fiber vary significantly. During the carding process, the positions of the roller assembly and the cylinder must be adjusted according to the characteristics of different batches of raw materials. However, due to the limitations of the existing adjustment structure itself, the position of the roller assembly cannot be adjusted flexibly, making it difficult to meet the carding precision required when manufacturing bamboo fiber using different batches of raw materials. Consequently, it cannot be guaranteed that the final bamboo fiber product can be directly used for spinning.

[0012] Sixth, due to the differences in the growing environment of bamboo from different origins, the raw material characteristics of bamboo from different origins used in the manufacture of bamboo raw fibers vary significantly. In the carding process, the distance between the bottom of the tube and the large cylinder must be adjusted according to the characteristics of different batches of raw materials; however, the existing adjustment structure is complex and cumbersome, making it impossible to quickly load and unload the bottom of the tube and adjust the distance between the bottom of the tube and the large cylinder, which affects the fiber quality output after carding the coarse bamboo raw fiber bundle, thus failing to guarantee that the final bamboo raw fiber product can be directly used for spinning.

[0013] Seventh, after the coarse bamboo fiber bundles are combed step by step by the coarse comber, the pre-combed fiber bundles need to be introduced into the fine comber for fine combing. However, in the traditional technology, when the fiber bundles after coarse combing are unloaded by the licker roller, the fiber bundles are attached to the pin combs on the surface of the licker roller, and the fiber bundles cannot be transferred and unloaded quickly, which affects the material supply requirements of the fine comber.

[0014] As can be seen from the above, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0015] To address the shortcomings of existing technologies, this invention provides a bamboo fiber coarse carding machine, which enables the sorting, transitional feeding, step-by-step sorting, and non-destructive transfer of irregularly clustered, bundled, longitudinally segmented, and unevenly distributed coarse bamboo fiber bundles, thereby improving the coarse bamboo fiber bundle coarse carding quality and ensuring that the final bamboo fiber product can be used for spinning.

[0016] To achieve the above objectives, the present invention provides the following technical solution.

[0017] A bamboo fiber combing machine includes a combing frame on which a large cylinder is rotatably mounted. On the feed side of the large cylinder, a gripping roller and a stripping roller are arranged side by side in sequence along the feed direction. The feed side of the gripping roller is provided with a double-roller feeding structure. The discharge side of the large cylinder is provided with a transfer piercing roller and a negative pressure roller arranged in parallel along the discharge direction; The area above the horizontal center line of the large styrene is surrounded by several sets of coarse combing components. The gripping barb roller and the stripping barb roller rotate in opposite directions, as do the stripping barb roller and the large cylinder, as well as the transfer barb roller and the large cylinder, and the transfer barb roller and the negative pressure roller rotate in opposite directions.

[0018] As an optimized solution, the double-needle roller feeding structure includes feeding rollers arranged horizontally side by side from top to bottom. The surface of the feeding rollers is provided with needle-like strips in a spiral shape. The two needle-like rollers are arranged to rotate facing each other and comb the material axially through the spirally distributed needles. The distance between the two feeding rollers is adaptively adjustable.

[0019] As an optimized solution, the needle bar includes a base bar that is spirally wound around the surface of the feed roller, and the surface of the base bar is provided with a plurality of integrally formed needle teeth arranged side by side along its extension direction.

[0020] As an optimized solution, the needle-punched teeth are arranged in a triangular shape along the axial direction of the feed roller; the needle-punched teeth are arranged in a triangular shape along the radial direction of the feed roller; along the axial direction of the feed roller, the needle-punched teeth include a tooth tip angle, a tooth flank angle and a tooth root angle, and the tooth tip angle is located behind the tooth root angle along the rotation direction of the feed roller.

[0021] As an optimized solution, the rotational speed of the stripping roller is greater than that of the gripping roller, a first stripping gap is provided between the gripping roller and the stripping roller, and a second stripping gap is provided between the stripping roller and the large cylinder, and the gap of the first stripping gap or the second stripping gap can be adjusted.

[0022] As an optimized solution, a scraper is vertically provided in the area below the stripping roller. The scraper is slidably set in the vertical and horizontal directions by an adjustment mechanism. A matching stripping arc-shaped guide plate is fixedly provided below the stripping roller. Screening holes are evenly distributed on the surface of the stripping arc-shaped guide plate.

[0023] As an optimized solution, each coarse combing assembly includes two coarse gripping rollers and coarse stripping rollers arranged in opposite directions, with the coarse gripping rollers and the large cylinder arranged in opposite directions. The density of the comb needles on the surface of several coarse gripping rollers is arranged in an increasing manner along the rotation direction of the large cylinder; the density of the comb needles on the surface of several coarse peeling rollers is arranged in an increasing manner along the rotation direction of the large cylinder.

[0024] As an optimized solution, the coarse gripping barn roller and the coarse peeling barn roller respectively adjust their adjacent spacing and their spacing from the large cylinder through a carding roller adjustment structure; The carding roller adjustment structure includes an adjustment seat, which is oscillatingly mounted on an adjustment fixing frame. The adjustment fixing frame is fixedly connected to the carding frame at the end of the large cylinder. One end of the adjustment seat is provided with a roller support structure. The adjustment seat also slides to adjust its position through a sliding structure. An angle positioning structure for fixing the oscillating position and a position positioning structure for fixing the sliding position are provided between the adjustment seat and the adjustment fixing frame.

[0025] As an optimized solution, the lower two sides of the large cylinder are respectively detachably equipped with arc-shaped bottom plates. The upper end of the bottom plate is vertically raised and lowered by a top adjustment component and is detachably connected to the top adjustment component. The lower end of the bottom plate is vertically raised and lowered or swung by a bottom adjustment component and is detachably connected to the bottom adjustment component.

[0026] As an optimized solution, the negative pressure roller includes a horizontally rotating mesh cylinder, inside which a negative pressure suction cylinder is inserted in a fixed position. Two air guide plates are fixedly connected side by side along the circumference on the outer wall of the negative pressure suction cylinder. The two air guide plates extend along the axial direction of the mesh cylinder. An anti-friction gap is provided between the outer end of the air guide plate and the inner wall of the mesh cylinder, and a negative pressure suction cavity close to the transfer piercing roller is formed through the area between the two air guide plates.

[0027] Compared with the prior art, the beneficial effects of the present invention are: (1) By setting two feeding rollers that rotate in opposite directions, and the surface of the feeding rollers is provided with needle-punched strips in a spiral shape, the spiral needle-punched strips can be used to hook the coarse bamboo fiber bundles during rotation. This allows the irregular fiber bundles to be initially dispersed along both sides of the axial direction. By dispersing the coarse bamboo fiber bundles and feeding them into the carding machine, the phenomenon of the raw materials being dispersed by the carding rollers due to entering in clusters in the traditional technology can be overcome. This effectively avoids the problem of the fibers being broken by the carding rollers, ensuring the length of the finished bamboo fiber product, and thus ensuring that the finished bamboo fiber product can be directly used for spinning. The upper feed roller can extend vertically to adjust the distance between it and the lower feed roller. This allows for the feeding of coarse bamboo fiber bundles under needle punching when the feed amount is too large. The upper feed roller moves upwards due to the compressive force, ensuring that even with a large feed amount, the coarse bamboo fiber bundles can still be fed, preventing material accumulation and blockage. A spring between the upper feed roller and the pressure plate allows for quick resetting of the upper feed roller using its force. Adjusting the height of the pressure plate adjusts the tension of the spring, thereby adjusting the clamping force of the upper feed roller to meet the feeding needs of coarse bamboo fiber bundles with different properties. (2) The needle strips are tightly wrapped around the feed roller, which not only reduces the processing difficulty and manufacturing cost of the needle roller, but also facilitates the replacement of the needle strips. This overcomes the problem that the entire needle roller must be replaced due to frequent wear of the needles by irregular and large fiber bundles in the traditional technology, and greatly reduces production and maintenance costs. By setting two opposing rotating feed rollers with spiral needle-like strips on their surfaces, the spiral needles, during rotation, enhance the gripping force on the coarse bamboo fiber bundles by utilizing the opposing rotation of the two feed rollers and the action of the needle teeth. This achieves the initial dispersion of irregular fiber bundles along both sides of the axial direction. By dispersing the coarse bamboo fiber bundles before they enter the carding machine, the phenomenon of being broken apart by the carding rollers due to clustered entry in traditional technology can be overcome. This reduces the occurrence of fiber breakage by the carding rollers, ensuring the length of the finished bamboo fiber product in the later stage, thus ensuring that the produced bamboo fiber product can be directly used for spinning. (3) The double roller feeding device is located between the large cylinder and the double puncture roller feeding device, and plays a transitional role between the feeding device and the large cylinder. The speed of the holding puncture roller is lower than that of the stripping puncture roller, so that the holding puncture roller receives the coarse bamboo fiber bundle transmitted from the feeding device and enters the stripping gap one along the holding arc guide plate. Since the speed of the stripping puncture roller is greater than that of the holding puncture roller, the coarse bamboo fiber bundle suspended on the surface of the holding puncture roller can be transferred to the surface of the stripping puncture roller. The coarse bamboo fiber bundle enters the stripping gap two along the stripping arc guide plate. Since the speed of the large cylinder is greater than that of the stripping puncture roller, the coarse bamboo fiber bundle is then transferred to the large cylinder. Since the speed of the stripping puncture roller is greater than that of the holding puncture roller and less than that of the large cylinder, it plays a transitional role, which can greatly reduce the breakage rate of bamboo fiber and ensure the length of bamboo fiber, thereby ensuring that the finished bamboo fiber product produced can be used for spinning. The gap between the holding roller and the stripping roller can be adjusted by adjusting the position of the support roller seat, thereby adjusting the size of the stripping gap one and the stripping gap two. The gap size can be adjusted according to the different characteristics of the coarse bamboo fiber bundles to meet the combing requirements. (4) By setting a scraper below the stripping roller, the bamboo fiber stubble that is not completely attached to the surface of the stripping roller is broken, ensuring the uniformity of feeding the large tin cylinder. The broken bamboo fiber falls to the bottom. A stripping arc-shaped guide plate is set below the stripping roller. Screening holes are evenly distributed on the surface of the stripping arc-shaped guide plate, which realizes the separation of the fluff and debris generated when the bamboo fiber is broken by the scraper. The fluff and debris are separated and dropped from the screening holes by the centrifugal force generated during the rotation of the stripping roller. The scraper uses an adjustment mechanism to adjust the vertical and horizontal positions of the scraper and the stripping roller. Because different batches of coarse bamboo fiber bundles have different quality and characteristics, the position of the scraper needs to be adjusted according to different batches of coarse fiber bundle raw materials. (5) By setting several sets of coarse combing components in the area above the horizontal center line of the large styrene, the gravity of the coarse bamboo fiber bundles can be used to make them stably attached to the needle cloth on the surface of the large styrene. As the large styrene rotates, the coarse bamboo fiber bundles pass through several sets of coarse combing components in sequence. The coarse bamboo fiber bundles are held on the surface by the coarse holding needle roller. Then, the coarse bamboo fiber bundles on the surface of the coarse holding needle roller are stripped and combed by the coarse peeling needle roller with a rotation speed greater than that of the coarse holding needle roller. The combed fiber bundles fall onto the surface of the large styrene and enter the next level of coarse combing components for combing. The coarse gripping barn roller and the coarse peeling barn roller rotate in opposite directions, and the coarse gripping barn roller and the large cylinder rotate in opposite directions, which realizes the forward combing of the coarse bamboo fiber bundle, directly reducing the breaking rate of the bamboo fiber and improving the combing quality. Because the comb needle density of several sets of coarse combing components is set in an increasing manner, the coarse bamboo fiber bundles are combed step by step. Step-by-step combing can directly overcome the phenomenon of easy fiber breakage in traditional technology, and ensure the uniformity of the sliver. Thus, the bamboo fiber finished product obtained after subsequent processes can meet the spinning requirements. (6) The adjusting frame is fixed on the carding machine frame, and the adjusting seat is connected to the adjusting frame. The two clamps are detachably connected to achieve support for the end of the roller group by installing the bearing seat; When it is necessary to adjust the distance between the roller assembly and the large cylinder, loosen the angle positioning bolt, support nut, and two positioning nuts, slide the adjustment seat, adjust to the appropriate position, tighten the two positioning nuts to fix the position with the positioning plate, and then tighten the support nut to adjust the distance between the roller assembly and the large cylinder. When it is necessary to adjust the gap between adjacent roller groups, loosen the angle positioning bolt, support nut, and two positioning nuts. By rotating one side of the angle positioning bolt, the adjustment seat will swing because the rotating angle positioning bolt abuts against the guide plate. After the adjustment is in place, tighten the other side of the angle positioning bolt to fix the angle. After fixing, tighten the positioning nut and support nut to complete the fixing work after the angle adjustment, which makes it easy to adjust the gap between adjacent roller groups. It is easy to operate and can be adjusted according to the characteristics of different batches of coarse bamboo fiber bundles to meet the combing precision of different batches of coarse bamboo fiber bundles. (7) By installing a top adjustment component and a bottom adjustment component on the combing frame, the bottom plate can be easily installed and removed. At the same time, the height of the upper part of the bottom plate can be adjusted by the top adjustment component. The height of the lower part of the bottom plate can be adjusted by the bottom adjustment component. At the same time, the swing angle of the lower part of the bottom plate can be adjusted. The distance between the bottom plate and the large styrofoam can be adjusted according to the raw material characteristics of different batches of coarse bamboo fiber bundles. The bottom plate is evenly distributed with long strip-shaped screening holes, which enables the debris and fluff generated during the combing process of the coarse bamboo fiber bundles to be separated from the long strip-shaped screening holes by the centrifugal force generated by the rotation of the large cylinder, thus achieving the function of removing impurities. (8) The fiber bundles on the surface of the large cylinder are transferred to the surface of the transfer roller by rotating the transfer roller. The transfer roller and the large cylinder are rotated in opposite directions, which can reduce the tearing of the fiber bundles and reduce the amount of fiber breakage. When the fiber bundle transferred to the surface of the transfer roller rotates to the fiber bundle outlet, it is connected to a negative pressure source through a negative pressure suction cylinder. The negative pressure suction cavity is directed towards the fiber bundle outlet, so that the airflow can be used to adsorb the fiber bundle attached to the surface of the transfer roller onto the surface of the mesh cylinder. As the mesh cylinder rotates, the fiber bundle is transferred. When the fiber bundle rotates with the mesh cylinder to a position where there is no negative pressure, the fiber bundle will detach from the surface of the mesh cylinder, realizing automatic unloading, which is convenient and fast. The mesh cylinder surface is equipped with a pressure roller that rotates in the opposite direction, which can compress the fiber bundles and make them adhere to the surface of the mesh cylinder, thereby improving the adsorption stability of the negative pressure.

[0028] In summary, by implementing combing feeding, transitional feeding, step-by-step combing, and non-destructive transfer on irregularly clustered, bundled, longitudinally segmented, and extremely unevenly distributed coarse bamboo fiber bundles, the quality of coarse bamboo fiber bundles is improved, thereby ensuring that the final bamboo fiber product can be used for spinning. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0030] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the double-pin roller feeding structure of the present invention; Figure 3 This is a schematic diagram of the adjustment mechanism of the present invention; Figure 4 This is a schematic diagram of the linkage structure of the present invention; Figure 5 This is a schematic diagram of the structure of the needle-punched strip of the present invention; Figure 6 This is a schematic diagram of the structure of the present invention in the axial direction; Figure 7 This is a schematic diagram of the radial structure of the needle-punched strip of the present invention; Figure 8 This is a schematic diagram of the structure of the needle-punched strip of the present invention; Figure 9 This is a schematic diagram of the coarse combing assembly of the present invention; Figure 10 This is a schematic diagram of the slide block of the present invention; Figure 11 This is a schematic diagram of the structure of the coarse gripping piercing roller and the coarse peeling piercing roller of the present invention.

[0031] Figure 12 This is a schematic diagram of the distribution of the adjustment seats in this invention; Figure 13 This is a schematic diagram of the structure of the adjusting seat of the present invention; Figure 14 This is a schematic diagram of the structure of the guide plate of the present invention; Figure 15 This is a schematic diagram showing the distribution of the top adjustment component and the bottom adjustment component of the present invention; Figure 16 This is a schematic diagram of the top adjustment component of the present invention; Figure 17 This is a schematic diagram of the bottom adjustment component of the present invention; Figure 18 This is a side view of the bottom adjustment component of the present invention. Figure 19 This is a schematic diagram of the bottom support plate of the present invention; Figure 20 This is a schematic diagram of the negative pressure roller of the present invention; Figure 21 This is a schematic diagram of the structure of the mesh tube of the present invention. In the diagram: 1-Large cylinder; 2-Holding punching roller; 3-Peeling punching roller; 4-Peeling gap one; 5-Peeling gap two; 6-Card frame; 7-Support roller seat; 8-Elongated sliding hole; 9-Bolt; 10-Circular guard plate; 11-Holding arc-shaped guide plate; 12-Peeling arc-shaped guide plate; 13-Peeling arc-shaped cover plate; 14-Fixing nut; 15-Scraper; 16-Slide seat; 17-Upright plate; 18-Adjusting handle; 19-Rectangular sliding hole; 20-Rotating rod; 21-External thread section; 22-Horizontal fixing nut; 23-Lifting bolt; 24-Card holder; 25-Bracket; 26-Threaded hole; 27-Guide block; 28-Guide groove; 29-Screw; 31-Feeding roller; 32-Needling strip; 33-Feeding... Gap; 43-Roller seat; 35-Gear; 36-Flat guide groove; 37-Side plate; 38-Bottom plate; 39-Pressure plate; 40-Compression spring; 41-Distance bolt; 42-Upper positioning nut; 43-Lower positioning nut; 44-Guide bolt; 45-Fixing bolt; 46-Needle tooth; 47-Tooth tip angle; 48-Tooth flank angle; 49-Tooth root angle; 50-Fixing ring; 51-Weld point; 52-Base strip; 53-Coarse peeling spiked roller; 54-Coarse gripping spiked roller; 55-Semi-circular clamp; 56-Connecting section; 57-Sliding elongated hole; 58-Guide plate; 59-Angle positioning bolt; 60-Support stud; 61-Support nut; 62-Support washer; 63-Positioning stud; 64-Positioning plate; 65-Positioning nut; 66-Positioning washer; 67-Locking nut; 68-Adjusting bracket; 69-Adjusting seat; 70-Top locking knob; 71-Guide rail; 72-Top horizontal plate section; 73-Top height adjusting bolt; 74-Bottom support; 75-Bottom guide seat; 76-Bottom slide; 77-Bottom insert cylinder; 78-Bottom insert column; 79-Bottom locking knob; 80-Bottom horizontal plate section; 81-Bottom height adjusting bolt; 82-Third sliding hole; 83-Second sliding hole; 84-Second bolt; 85-Fixing bolt; 86-Arc plate; 87-Rib; 88-Elongated screening hole; 89-First sliding hole; 90-First bolt; 91-Top insert hole; 92-Bottom Insertion hole; 93-Top adjustment assembly; 94-Bottom adjustment assembly; 95-Bottom plate; 96-Top guide seat; 97-Top slide seat; 98-Top insertion cylinder; 99-Top insertion column; 102-Transfer piercing roller; 103-Transfer arc-shaped cover plate; 104-Transfer arc-shaped guide plate; 105-Net cylinder; 106-Negative pressure suction cylinder; 107-Negative pressure suction cavity; 108-Auxiliary pressure roller; 109-Air guide plate; 110-Long strip-shaped suction hole; 111-End plate; 112-Negative pressure support roller seat; 113-Blocking plate; 114-Support ring; 115-Large cylinder; 116-Fiber bundle inlet; 117-Fiber bundle outlet; 118-Negative pressure roller; 119-Double piercing roller feeding structure. Detailed Implementation

[0033] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0034] like Figure 1 and Figure 2 As shown, the bamboo fiber combing machine includes a combing frame 6, on which a large cylinder 1 is rotatably mounted. On the feeding side of the large cylinder 1, a gripping roller 2 and a stripping roller 3 are arranged in parallel along the feeding direction. The feeding side of the gripping roller 2 is provided with a double-roller feeding structure 119. The discharge side of the large tin cylinder 1 is provided with a transfer piercing roller 102 and a negative pressure roller 118 arranged in parallel along the discharge direction; The area above the horizontal centerline of Daxilin 1 is surrounded by several sets of coarse combing components; The gripping barb roller 2 and the stripping barb roller 3 rotate in opposite directions, as do the stripping barb roller 3 and the large cylinder 1, and the transfer barb roller 102 and the large cylinder 1. The transfer barb roller 102 and the negative pressure roller 118 also rotate in opposite directions.

[0035] The double-pinned roller feeding structure 119 includes feeding rollers 31 arranged horizontally side by side from top to bottom. The surface of the feeding rollers 31 is provided with needle-punched strips 32 in a spiral shape. The two feeding rollers 31 are arranged to rotate facing each other and the material is combed along the axial direction by the needles distributed in a spiral shape. The distance between the two feeding rollers 31 is adaptively adjustable.

[0036] The two feed rollers 31 are set to rotate synchronously through a linkage structure.

[0037] The linkage structure includes gears 35 fixed to the two feed rollers 31 at the same direction ends, and the two gears 35 mesh with each other.

[0038] The two ends of the two feed rollers 31 are rotatably mounted on the roller seat 43. The upper roller seat 43 is normally set against the lower roller seat 43, and a feeding gap 33 is formed between the two feed rollers 31.

[0039] Two roller seats 43 on the same side are connected to the feeding bracket. The lower roller seat 43 is fixedly installed, while the upper roller seat 43 is slidably installed vertically.

[0040] The feeding bracket is connected to an adjustment mechanism for adjusting the clamping force of the upper feeding roller 31.

[0041] The feeding bracket includes a base plate 38, on which two vertical side plates 37 are fixedly mounted side by side, and a roller seat 43 connection area is formed between the two side plates 37. The lower roller seat 43 is fixed at the lower end position between the two side plates 37, and the upper roller seat 43 is slidably mounted vertically between the two side plates 37.

[0042] The adjustment mechanism includes a pressure plate 39 horizontally positioned above the two side plates 37, and a compression spring 40 is provided between the lower end of the pressure plate 39 and the upper end of the upper roller seat 43.

[0043] The vertical spacing between the pressure plate 39 and the side plate 37 is adjustable.

[0044] The upper ends of the two side plates 37 are vertically threaded with spacer bolts 41, and the two ends of the pressure plate 39 are respectively provided with sliding holes that match the spacer bolts 41.

[0045] Planar guide grooves 36 are respectively provided on the opposite side walls of the roller seat 43, and the planar guide groove 36 of the upper roller seat 43 is in frictional contact with the side wall of the pressure plate 39.

[0046] A fixing bolt 45 is horizontally threaded onto the side plate 37, and the end of the fixing bolt 45 abuts against the planar guide groove 36 of the lower roller seat 43.

[0047] The spacer bolt 41 is threaded with an upper positioning nut 42 and a lower positioning nut 43 in parallel from top to bottom. The lower surface of the upper positioning nut 42 abuts against the upper surface of the pressure plate 39, and the lower surface of the lower positioning nut 43 abuts against the upper surface of the side plate 37.

[0048] The pressure plate 39 is vertically threaded with a guide bolt 44, and a guide part is vertically fixed at the upper end of the upper roller seat 43. The two ends of the compression spring 40 are correspondingly inserted into the guide bolt 44 and the guide part.

[0049] The surface of the feed roller 31 is wound with a needle bar 32. The needle bar 32 includes a base bar 52 that is spirally wound on the surface of the feed roller 31. The surface of the base bar 52 is provided with a plurality of integrally formed needle teeth 46 arranged in parallel along its extension direction.

[0050] The base strip 52 is fitted together between adjacent sections along the axial direction of the feed roller 31.

[0051] The needle-punched teeth 46 are arranged in a triangular shape along the axial direction of the feed roller 31.

[0052] The needle-punched teeth 46 are arranged in a triangular shape along the radial direction of the feed roller 31.

[0053] Along the axial direction of the feed roller 31, the needle tooth 46 includes a tooth tip angle 47, a tooth flank angle 48 and a tooth root angle 49. The tooth tip angle 47 is located behind the tooth root angle 49 along the rotation direction of the feed roller 31.

[0054] The surface of the feed roller 31 is fitted with fixing rings 50 at both ends of the base strip 52, and the two ends of the base strip 52 are welded to the two fixing rings 50.

[0055] Several welding points 51 are fixed between the side wall of the fixing ring 50 away from the base strip 52 and the feed roller 31.

[0056] The needle teeth 46 on the two feed rollers 31 are arranged in the same spiral direction.

[0057] The needle teeth 46 on the two feed rollers 31 are arranged in opposite directions.

[0058] The rotational speed of the stripping roller 3 is greater than that of the holding roller 2. A stripping gap 4 is provided between the holding roller 2 and the stripping roller 3, and a stripping gap 5 is provided between the stripping roller 3 and the large cylinder 1. The gap of the stripping gap 4 or the stripping gap 5 can be adjusted.

[0059] A scraper 15 is vertically installed on one side below the stripping roller 3. The scraper 15 is slidably installed in the vertical and horizontal directions through the adjustment mechanism. A matching stripping arc guide plate 12 is fixedly installed below the stripping roller 3. Long strip screening holes 88 are evenly distributed on the surface of the stripping arc guide plate 12.

[0060] Below the stripping roller 3, a matching stripping arc guide plate 12 is fixedly provided, and screening holes are evenly distributed on the surface of the stripping arc guide plate 12.

[0061] The gripping shank roller 2 and the stripping shank roller 3 are located at the feeding end of the large cylinder 1. The gripping shank roller 2 and the stripping shank roller 3 are arranged sequentially along the feeding direction. The rotation speed of the stripping shank roller 3 is greater than that of the gripping shank roller 2.

[0062] The adjustment structure includes two sliding blocks 16 arranged horizontally in parallel. One end of each sliding block 16 is fixedly connected to a card holder 24. The top of the card holder 24 is provided with an insertion groove along the vertical direction. The two ends of the scraper 15 are correspondingly inserted into the insertion groove along the vertical direction.

[0063] The bottom of the card holder 24 is threaded with a vertically arranged lifting bolt 23, the end of which abuts against the lower end of the scraper 15.

[0064] The slide block 16 is horizontally slidably mounted on the vertical plate 17. A screw 29 is horizontally fixed on the vertical plate 17. A rotating rod 20 is provided on the slide block 16 along its sliding direction. The rotating rod 20 is provided with an external thread section 21. A threaded hole 26 matching the external thread section 21 is opened on the screw 29.

[0065] A rectangular sliding hole 19 is horizontally opened on the slide block 16. The screw 29 passes through the rectangular sliding hole 19 and is threadedly connected to a horizontal fixing nut 22. The horizontal fixing nut 22 abuts against the outer edge of the rectangular sliding hole 19.

[0066] The side wall of the upright plate 17 is fixed with two slide rails in parallel from top to bottom. The slide block 16 is set in the shape of a shell. The slide block 16 is set with an opening facing the side wall of the upright plate 17 and is snapped onto the two slide rails through the opening.

[0067] The lifting bolt 23 is threaded with a vertical fixing nut, which abuts against the lower end of the bracket 24.

[0068] One end of the rotating rod 20 extends outward through the slide block 16 and is fixedly connected to the adjusting handle 18.

[0069] When adjusting the horizontal position, first loosen the horizontal fixing nut 22, turn the adjusting handle 18 to drive the rotating rod 20 to rotate. Since the rotating rod 20 and the screw 29 are connected by the threaded hole 26, the rotation of the rotating rod 20 will drive the slide to move, thereby adjusting the horizontal position of the scraper. After the adjustment is in place, tighten the horizontal fixing nut 22.

[0070] When adjusting the vertical position, rotate the lifting bolt 23 so that the end of the lifting bolt 23 abuts against the lower end of the scraper, thereby adjusting the vertical height of the scraper. After adjusting to the correct position, tighten the vertical fixing nut.

[0071] A guide block 27 is fixedly connected to the side wall of the insertion slot, and a guide groove 28 matching the guide block 27 is vertically opened on the side wall of the scraper 15.

[0072] A peeling gap 4 is provided between the holding barb roller 2 and the peeling barb roller 3, and a peeling gap 5 is provided between the peeling barb roller 3 and the large cylinder 1. The gap of the peeling gap 4 or the peeling gap 5 can be adjusted.

[0073] The axes of the holding roller 2 and the stripping roller 3 are set at the same height.

[0074] The diameter of the holding roller 2 is the same as that of the stripping roller 3.

[0075] The two ends of the gripping roller 2 and the stripping roller 3 are respectively rotatably mounted on the support roller seat 7, and the spacing between adjacent support roller seats 7 can be adjusted.

[0076] The support roller seat 7 is connected to the carding frame 6. The carding frame 6 has two elongated sliding holes 8 for each support roller seat 7. A bolt 9 is inserted into each elongated sliding hole 8. The end of the bolt 9 passes through the support roller seat 7 and is threaded with a fixing nut 14. By setting the elongated sliding holes 8, the position of the support roller seat 7 can be moved by loosening the bolt 9 and the fixing nut 14. After it is moved into place, the bolt 9 and the fixing nut 14 can be locked to fix it, which is convenient for adjustment.

[0077] A bracket 26 is fixedly connected to the combing frame 6, and the upright plate 17 is fixedly connected to the bracket 26.

[0078] A circular guard plate 10 is fixed on the support roller seat 7 at the end corresponding to the holding piercing roller 2 or the peeling piercing roller 3. In addition to fixing the guide plate, it also covers the end of the piercing roller, overcoming the safety hazards caused by the end of the piercing roller rod being exposed to the outside.

[0079] A gripping arc-shaped guide plate 11 is fixed between the circular guard plates 10 at both ends of the gripping roller 2, and the gripping arc-shaped guide plate 11 covers the upper part of the peripheral wall of the gripping roller 2.

[0080] A peeling arc-shaped guide plate 12 and a peeling arc-shaped cover plate 13 are fixed between the circular guard plates 10 at both ends of the peeling roller 3. The peeling arc-shaped guide plate 12 covers the lower part of the peripheral wall of the peeling roller 3, and the peeling arc-shaped cover plate 13 covers the upper part of the peripheral wall of the peeling roller 3.

[0081] The guide plate serves to guide the bamboo fibers as they rotate with the needle roller.

[0082] The holding arc-shaped guide plate 11, the peeling arc-shaped guide plate 12, and the peeling arc-shaped cover plate 13 are fixed to the circular guard plate 10 by screws.

[0083] The gripping shank roller 2 and the stripping shank roller 3 are located at the feeding end of the large cylinder 1. The gripping shank roller 2 and the stripping shank roller 3 are arranged sequentially along the feeding direction. The rotation speed of the stripping shank roller 3 is greater than that of the gripping shank roller 2.

[0084] The adjustment structure includes two sliding blocks 16 arranged horizontally in parallel. One end of each sliding block 16 is fixedly connected to a card holder 24. The top of the card holder 24 is provided with an insertion groove along the vertical direction. The two ends of the scraper 15 are correspondingly inserted into the insertion groove along the vertical direction.

[0085] The bottom of the card holder 24 is threaded with a vertically arranged lifting bolt 23, the end of which abuts against the lower end of the scraper 15.

[0086] The slide block 16 is horizontally slidably mounted on the vertical plate 17. A screw 29 is horizontally fixed on the vertical plate 17. A rotating rod 20 is provided on the slide block 16 along its sliding direction. The rotating rod 20 is provided with an external thread section 21. A threaded hole 26 matching the external thread section 21 is opened on the screw 29.

[0087] A rectangular sliding hole 19 is horizontally opened on the slide block 16. The screw 29 passes through the rectangular sliding hole 19 and is threadedly connected to a horizontal fixing nut 22. The horizontal fixing nut 22 abuts against the outer edge of the rectangular sliding hole 19.

[0088] The side wall of the upright plate 17 has two slide rails 71 fixedly connected side by side from top to bottom. The slide block 16 is set in the shape of a shell. The slide block 16 is set with an opening facing the side wall of the upright plate 17 and is snapped onto the two slide rails 71 through the opening.

[0089] The lifting bolt 23 is threaded with a vertical fixing nut, which abuts against the lower end of the bracket 24.

[0090] One end of the rotating rod 20 extends outward through the slide block 16 and is fixedly connected to the adjusting handle 18.

[0091] A guide block 27 is fixedly connected to the side wall of the insertion slot, and a guide groove 28 matching the guide block 27 is vertically opened on the side wall of the scraper 15.

[0092] Each coarse combing assembly includes two coarse gripping barn rollers 54 and coarse stripping barn rollers 53 arranged facing each other and rotating in opposite directions. The coarse gripping barn rollers 54 and the large cylinder 1 are arranged facing each other and rotating in opposite directions.

[0093] The density of comb needles on the surface of several coarse gripping rollers 54 is arranged in an increasing manner along the rotation direction of the large cylinder 1.

[0094] The density of comb needles on the surface of several coarse stripping rollers 53 is set in an increasing manner along the rotation direction of the large cylinder 1.

[0095] The rotational speed of the coarse peeling bar roller 53 is greater than that of the coarse gripping bar roller 54.

[0096] The diameter of the coarse gripping barb roller 54 is larger than the diameter of the coarse peeling barb roller 53.

[0097] The distance between the coarse gripping roller 54 and the large cylinder 1 is smaller than the distance between the coarse stripping roller 53 and the large cylinder 1.

[0098] The distance between the coarse gripping barb roller 54 and the coarse peeling barb roller 53 is smaller than the distance between the coarse peeling barb roller 53 and the large cylinder 1.

[0099] The coarse gripping barb roller 54 is located behind the coarse stripping barb roller 53 along the rotation direction of the large cylinder 1.

[0100] The coarse combing assembly consists of five sets.

[0101] Three sets of coarse combing components are located together in the area near the feed side of the vertical center line, while the other two sets of coarse combing components are located together in the area on the other side of the vertical center line.

[0102] The coarse gripping barb roller 54 and the coarse stripping barb roller 53 adjust their adjacent spacing and their spacing with the large cylinder 1 through the carding roller adjustment structure, respectively. The carding roller adjustment structure includes an adjustment seat 69, which is oscillatingly mounted on an adjustment fixing frame 68. The adjustment fixing frame 68 is fixedly connected to the carding frame 6 at the end of the large cylinder 1. One end of the adjustment seat 69 is provided with a roller support structure. The adjustment seat 69 also slides to adjust its position through a sliding structure. An angle positioning structure for fixing the oscillating position and a position positioning structure for fixing the sliding position are provided between the adjustment seat 69 and the adjustment fixing frame 68.

[0103] The roller support structure includes two semi-circular clamps 55 that are mated together. One of the semi-circular clamps 55 is fixed on the adjusting seat 69, and the two semi-circular clamps 55 are detachably connected.

[0104] The two ends of the semi-circular clamp 55 are respectively fixed with parallel connecting sections 56, and the two adjacent connecting sections 56 are respectively provided with coaxial bolt fixing holes.

[0105] A support stud 60 is horizontally fixed on the adjusting bracket 68. The adjusting seat 69 has a sliding elongated hole 57 along its sliding direction. The other end of the support stud 60 passes through the sliding elongated hole 57 and is threadedly connected to a support nut 61 that abuts against the outer edge of the sliding elongated hole 57.

[0106] The sliding structure includes a guide plate 58 fixed to the adjusting bracket 68. The guide plate 58 is constrained within the sliding elongated hole 57, and the length of the guide plate 58 is less than the length of the sliding elongated hole 57.

[0107] The angle positioning structure includes angle positioning bolts 59 threadedly connected to the opposite sidewalls of the adjusting seat 69, with the ends of the two angle positioning bolts 59 abutting against the opposite sidewalls of the guide plate 58.

[0108] The width of the guide plate 58 is smaller than the width of the sliding elongated hole 57, and an angle adjustment gap is provided between the side wall of the guide plate 58 and the side wall of the sliding elongated hole 57.

[0109] The positioning structure includes two positioning plates 64 fixedly attached to the adjusting bracket 68 in parallel. The other end of the adjusting seat 69 is threaded with a positioning stud 63. The positioning stud 63 passes through the gap between the two positioning plates 64. Two positioning nuts 65 are threaded onto the positioning stud 63 respectively. The two positioning nuts 65 abut against the opposite outer edges of the gap.

[0110] The width of the gap is greater than the diameter of the positioning stud 63.

[0111] The positioning stud 63 is also threaded with a locking nut 67, which abuts against the adjusting and fixing bracket 68.

[0112] A positioning washer 66 is provided between the positioning nut 65 and the outer edge of the gap.

[0113] A support washer 62 is provided between the support nut 61 and the outer edge of the sliding elongated hole 57.

[0114] The lower two sides of the large xilin 1 are each equipped with a detachable, arc-shaped bottom plate 95. The upper end of the bottom plate 95 is vertically raised and lowered via the top adjustment assembly 93 and is detachably connected to the top adjustment assembly 93; The lower end of the bottom plate 95 is vertically raised or lowered or swung by the bottom adjustment assembly 94 and is detachably connected to the bottom adjustment assembly 94.

[0115] The bottom plate 95 includes two parallel arc-shaped plates 86, with several ribs 87 fixedly connected in parallel between the relative inner walls of the two arc-shaped plates 86, and elongated screening holes 88 formed through the area between adjacent ribs 87.

[0116] The top adjustment assembly 93 includes a top guide seat 96 that is vertically fixed to the combing frame 6. A top slide seat 97 is slidably mounted on the top guide seat 96 along the vertical direction. A top insertion post 99 is slidably provided at the upper end of the top slide seat 97. A top insertion hole 91 matching the top insertion post 99 is provided on the bottom plate 95.

[0117] The top slide 97 is horizontally fixed to the upper end of the top insert cylinder 98, and the top insert post 99 is horizontally slidably inserted into the top insert cylinder 98.

[0118] The upper end of the top insert cylinder 98 is threadedly connected to a top locking knob 70, and the end of the top locking knob 70 abuts against the top insert post 99.

[0119] The lower end of the top guide seat 96 is horizontally fixed to the top horizontal plate section 72, and the top height adjusting bolt 73 is vertically rotatably installed on the top horizontal plate section 72. The upper end of the top height adjusting bolt 73 is threadedly connected to the lower end of the top slide 97.

[0120] The smooth section of the top height adjusting bolt 73 is also fixed with a top limiting ring, and the top limiting ring and the shank end of the top height adjusting bolt 73 are located on opposite sides of the top horizontal plate section 72.

[0121] The top slide 97 has a first sliding hole 89 vertically opened on the upper edge. A first bolt 90 is inserted into the first sliding hole 89. The end of the first bolt 90 is threadedly connected to the top guide 96. The shank end of the first bolt 90 abuts against the outer edge of the first sliding hole 89.

[0122] Two vertically arranged guide rails 71 are fixedly connected side by side on the top guide seat 96, and a guide groove 28 matching the guide rails 71 is opened on the top slide 97.

[0123] The bottom adjustment assembly 94 includes a bottom support 74 fixed to the combing frame 6. A bottom guide 75 with swing and sliding configuration is installed on the bottom support 74. A bottom slide 76 is slidably installed on the bottom guide 75 along the vertical direction. A bottom insertion post 78 is slidably provided at the upper end of the bottom slide 76. A bottom insertion hole 92 matching the bottom insertion post 78 is provided on the bottom plate 95.

[0124] Two vertically arranged second sliding holes 83 are provided side by side on the bottom guide seat 75. A second bolt 84 is inserted into the second sliding hole 83. The end of the second bolt 84 is threaded to the bottom support 74. The shank end of the second bolt 84 abuts against the outer edge of the second sliding hole 83. The width of the second sliding hole 83 is greater than the diameter of the second bolt 84.

[0125] A top plate is horizontally fixed to the upper end of the bottom guide seat 75, and a sliding hole matching the bottom slide seat 76 is provided on the top plate.

[0126] A third sliding hole 82 is vertically opened on the upper edge of the bottom slide 76. A fixing bolt 85 is inserted into the third sliding hole 82. The end of the fixing bolt 85 passes through the bottom guide 75 and is threadedly connected to a nut that abuts against the bottom guide 75. The shank end of the fixing bolt 85 abuts against the outer edge of the third sliding hole 82.

[0127] The bottom slide 76 is horizontally fixed to the upper end of the bottom insert cylinder 77, and the bottom insert post 78 is horizontally slidably inserted into the bottom insert cylinder 77.

[0128] The upper end of the bottom insert cylinder 77 is threadedly connected to a bottom locking knob 79, and the end of the bottom locking knob 79 abuts against the bottom insert post 78.

[0129] A bottom horizontal plate section 80 is horizontally fixed to the side wall of the bottom slide 76. A bottom height adjusting bolt 81 is vertically rotatably installed on the bottom horizontal plate section 80. The lower end of the bottom height adjusting bolt 81 is threadedly connected to the top plate.

[0130] The smooth section of the bottom height adjusting bolt 81 is also fixed with a bottom limiting ring, and the bottom limiting ring and the handle end of the bottom height adjusting bolt 81 are located on opposite sides of the bottom horizontal plate section 80.

[0131] An auxiliary pressure roller 108 is provided on the side of the negative pressure roller 118 that is close to the transfer piercing roller 102 and rotates in front of it.

[0132] The negative pressure roller 118 includes a horizontally rotatable mesh cylinder 105, in which a negative pressure suction cylinder 106 is inserted and fixed in position. Two air guide plates 109 are fixedly connected in parallel along the circumferential direction on the outer wall of the negative pressure suction cylinder 106. The two air guide plates 109 extend along the axial direction of the mesh cylinder 105. There is an anti-friction gap between the outer end of the air guide plate 109 and the inner wall of the mesh cylinder 105, and a negative pressure suction cavity 107 close to the transfer piercing roller 102 is formed through the area between the two air guide plates 109.

[0133] The two ends of the mesh cylinder 105 are rotatably supported on the negative pressure support roller seat 112, and an end plate 111 is rotatably installed on the inner wall of one of the negative pressure support roller seats 112. One end of the mesh cylinder 105 is fixed to the end plate 111. A support ring 114 is fixedly connected to the inner wall of another negative pressure support roller seat 112, and the other end of the mesh cylinder 105 is rotatably inserted into the support ring 114.

[0134] The negative pressure suction cylinder 106 is fixedly connected to the negative pressure support roller seat 112 near the support ring 114. One end of the negative pressure suction cylinder 106 is located outside the mesh cylinder 105, and the other end extends into the mesh cylinder 105 and is fixedly connected to the plug plate 113. The side wall of the negative pressure suction cylinder 106 is provided with a long strip-shaped air extraction hole 110 that communicates with the negative pressure suction cavity 107.

[0135] A rotating support groove is provided on the inner wall of the end plate 111, and the end plate 113 is rotatably supported in the rotating support groove.

[0136] The top of the transfer roller 102 is provided with a fixed transfer arc-shaped cover plate 103, which covers the upper part of the peripheral wall of the transfer roller 102.

[0137] The bottom of the transfer roller 102 is provided with a fixed transfer arc-shaped guide plate 104, which covers the lower part of the peripheral wall of the transfer roller 102.

[0138] A fiber bundle inlet 116 is provided between the ends of the transfer arc-shaped cover plate 103 and the transfer arc-shaped guide plate 104 that face the same direction, and a fiber bundle outlet 117 is formed between the other ends of the transfer arc-shaped cover plate 103 and the transfer arc-shaped guide plate 104 that face the same direction.

[0139] The two ends of the transfer roller 102 are rotatably supported on the transfer roller seat. The transfer roller seat is fixed with a circular guard plate 10 at the end of the transfer roller 102 respectively. The transfer arc-shaped cover plate 103 and the transfer arc-shaped guide plate 104 are fixed on the circular guard plate 10.

[0140] The working principle of this device is as follows: By setting two opposing rotating feed rollers 31, and the surface of the feed rollers 31 is provided with helical needle-punched strips 32, the spiral needle-punched strips can be used to hook the coarse bamboo fiber bundles during rotation. This achieves the initial dispersion of irregular fiber bundles along both sides of the axial direction. By dispersing the coarse bamboo fiber bundles before they enter the carding machine, the phenomenon of the raw materials being dispersed by the carding rollers due to entering in clusters in the traditional technology can be overcome. This effectively avoids the problem of the fibers being broken by the carding rollers, ensures the length of the finished bamboo fiber product, and thus ensures that the finished bamboo fiber product can be directly used for spinning. The upper feed roller 31 can slide vertically to adjust the distance between it and the lower feed roller 31. This allows for the feeding of coarse bamboo fiber bundles under needle punching when the feed amount is too large. The upper feed roller 31 moves upwards due to the compressive force, ensuring that even with a large feed amount, the coarse bamboo fiber bundles can still be fed, preventing material accumulation and blockage. A spring 40 is installed between the upper feed roller 31 and the pressure plate 39. The spring 40 assists in the rapid resetting of the upper feed roller 31. Adjusting the height of the pressure plate 39 adjusts the tension of the spring 40, thereby adjusting the clamping force of the upper feed roller 31 to meet the feeding needs of coarse bamboo fiber bundles with different characteristics. The needle-punched strip 32 is tightly wrapped around the feed roller 31, which not only reduces the processing difficulty and manufacturing cost of the needle-punched roller, but also facilitates the replacement of the needle-punched strip 32. This overcomes the problem in traditional technology that the entire needle-punched roller must be replaced due to frequent wear caused by irregular and large fiber bundles, and greatly reduces production and maintenance costs. By setting two opposing rotating feed rollers 31, and the surface of the feed rollers 31 is provided with helical needle-punched strips 32, the opposing rotation of the two feed rollers 31 during the rotation of the helical needle-punched strips 46 can be used to increase the gripping force on the coarse bamboo fiber bundles. This achieves the initial dispersion of irregular fiber bundles along both sides of the axial direction. By dispersing the coarse bamboo fiber bundles before they enter the carding machine, the phenomenon of being broken apart by the carding rollers due to clustered entry in traditional technology can be overcome. This reduces the occurrence of the carding roller breaking the fiber bundles, ensuring the length of the bamboo fiber in the later stage, and thus ensuring that the finished bamboo fiber product can be directly used for spinning. The double-roller feeding device is located between the large cylinder 1 and the double-pinned roller feeding device, serving as a transitional connection between the feeding device and the large cylinder 1. The gripping pinned roller 2 rotates at a lower speed than the stripping pinned roller 3, allowing it to receive the coarse bamboo fiber bundles transmitted from the feeding device. The coarse bamboo fiber bundles are then guided into the stripping gap 4 along the gripping arc guide plate 11. Since the stripping pinned roller 3 rotates at a higher speed than the gripping pinned roller 2, the coarse bamboo fiber bundles suspended on the surface of the gripping pinned roller 2 can be transferred to the surface of the stripping pinned roller 3. The coarse bamboo fiber bundles then enter the stripping gap 5 along the stripping arc guide plate 12. Since the large cylinder 1 rotates at a higher speed than the stripping pinned roller 3, the coarse bamboo fiber bundles are then transferred to the large cylinder 1. Because the stripping pinned roller 3 rotates at a higher speed than the gripping pinned roller 2 but less than the large cylinder 1, it serves as a transitional device, which can greatly reduce the breakage rate of bamboo fibers, ensure the length of bamboo fibers, and thus ensure that the finished bamboo fiber products produced can be used for spinning. The holding roller 2 and the stripping roller 3 adjust the position of the support roller seat 7 to adjust the size of the gap between the stripping gap 1 4 and the stripping gap 2 5. The gap size can be adjusted according to the different characteristics of the coarse bamboo fiber bundles to meet the combing requirements. By setting a scraper 15 below the stripping roller 3, the bamboo fiber stubble that is not completely attached to the surface of the stripping roller 3 is broken, ensuring the uniformity of feeding the large tin cylinder 1. The broken bamboo fiber falls to the bottom. A stripping arc-shaped guide plate 12 is set below the stripping roller 3. The surface of the stripping arc-shaped guide plate 12 is evenly distributed with long strip-shaped screening holes 88, which realizes the separation of the fluff and debris generated when the bamboo fiber is broken by the scraper 15. The fluff and debris are separated and dropped from the long strip-shaped screening holes 88 by the centrifugal force generated during the rotation of the stripping roller 3. The scraper 15 uses an adjustment mechanism to adjust the vertical and horizontal positions of the scraper 15 and the stripping roller 3. Because the quality and characteristics of different batches of coarse bamboo fiber bundles are different, the position of the scraper 15 needs to be adjusted according to the different batches of coarse bamboo fiber bundle raw materials. By setting several sets of coarse combing components in the area above the horizontal center line of the large cylinder 1, the gravity of the coarse bamboo fiber bundles can be used to stably attach them to the needle cloth on the surface of the large cylinder 1. As the large cylinder 1 rotates, the coarse bamboo fiber bundles pass through several sets of coarse combing components in sequence. The coarse holding roller 54 holds the coarse bamboo fiber bundles on its surface, and then the coarse peeling roller 53 with a rotation speed greater than its speed peels and combs the coarse bamboo fiber bundles on the surface of the coarse holding roller 54. The combed fiber bundles fall onto the surface of the large cylinder 1 and enter the next stage of coarse combing components for further combing. The coarse gripping barb roller 54 and the coarse peeling barb roller 53 rotate in opposite directions, and the coarse gripping barb roller 54 and the large cylinder 1 rotate in opposite directions, which realizes the forward combing of the coarse bamboo fiber bundle, directly reducing the tearing rate of the bamboo fiber and improving the combing quality. Because the comb needle density of several sets of coarse combing components is set in an increasing manner, the coarse bamboo fiber bundles are combed step by step. Step-by-step combing can directly overcome the phenomenon of easy breakage of fiber bundles in traditional technology, and ensure the uniformity of the sliver. As a result, the bamboo fiber finished product obtained after subsequent processes can meet the spinning requirements. The adjusting frame 68 is fixed on the carding frame 6, and the adjusting seat 69 is connected to the adjusting frame 68. It is detachably connected by two semi-circular clamps 55, so that the end of the roller group can be supported by installing bearing seats. When it is necessary to adjust the distance between the roller group and the large cylinder 1, loosen the angle positioning bolt 59, the support nut 61, and the two positioning nuts 65, slide the adjustment seat 69, adjust it to the appropriate position, tighten the two positioning nuts 65 to fix the position with the positioning plate 64, and then lock the support nut 61 to adjust the distance between the roller group and the large cylinder 1. When it is necessary to adjust the gap between adjacent roller groups, loosen the angle positioning bolt 59, support nut 61, and two positioning nuts 65. By rotating one side of the angle positioning bolt 59, since the rotating angle positioning bolt 59 abuts against the guide plate 58, the adjusting seat 69 is driven to swing. After the adjustment is in place, tighten the other side of the angle positioning bolt 59 to fix the angle. After fixing, lock the positioning nut 65 and support nut 61 to complete the fixing work after the angle adjustment, which makes it easy to adjust the gap between adjacent roller groups. It is easy to operate and can be adjusted according to the characteristics of different batches of coarse bamboo fiber bundles to meet the combing precision of different batches of coarse bamboo fiber bundles. By installing a top adjustment component 93 and a bottom adjustment component 94 on the combing frame 6, the bottom plate 95 can be easily installed and removed. The height of the upper end of the bottom plate 95 can be adjusted by the top adjustment component 93, and the height of the lower end of the bottom plate 95 can be adjusted by the bottom adjustment component 94. At the same time, the swing angle of the lower end of the bottom plate 95 can also be adjusted. This allows the spacing between the bottom plate 95 and the large styrene cylinder 1 to be adjusted according to the raw material characteristics of different batches of coarse bamboo fiber bundles. The bottom plate 95 is evenly distributed with long strip-shaped screening holes 88, which enables the debris and fluff generated during the combing process of the coarse bamboo fiber bundle to be separated from the long strip-shaped screening holes 88 by the centrifugal force generated by the rotation of the large cylinder 1, thus achieving the function of removing impurities. The fiber bundles on the surface of the large cylinder 1 are transferred to the surface of the transfer roller 102 by rotating the transfer roller 102. The transfer roller 102 and the large cylinder 1 are arranged to rotate facing each other, which can reduce the tearing of the fiber bundles and reduce the amount of fiber breakage. When the fiber bundle transferred to the surface of the transfer roller 102 rotates to the fiber bundle outlet 117, it is connected to a negative pressure source through the negative pressure suction cylinder 106. The negative pressure suction cavity 107 is directed toward the fiber bundle outlet 117, so that the fiber bundle attached to the surface of the transfer roller 102 is adsorbed onto the surface of the mesh cylinder 105 by airflow. As the mesh cylinder 105 rotates, the fiber bundle is transferred. When the fiber bundle rotates with the mesh cylinder 105 to a position without negative pressure, the fiber bundle will detach from the surface of the mesh cylinder 105, realizing automatic unloading, which is convenient and fast. The surface of the mesh cylinder 105 is provided with an auxiliary pressure roller 108 that rotates in the opposite direction, which can press the fiber bundles and make them stick to the surface of the mesh cylinder 105, thereby improving the adsorption stability of the negative pressure.

[0141] In summary, by implementing combing feeding, transitional feeding, step-by-step combing, and non-destructive transfer on irregularly clustered, bundled, longitudinally segmented, and extremely unevenly distributed coarse bamboo fiber bundles, the quality of coarse bamboo fiber bundles is improved, thereby ensuring that the final bamboo fiber product can be used for spinning.

[0142] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A bamboo fiber combing machine, characterized in that: The machine includes a carding frame (6), on which a large cylinder (1) is rotatably mounted. The feeding side of the large cylinder (1) is provided with a gripping barb roller (2) and a stripping barb roller (3) arranged in parallel along the feeding direction. The feeding side of the gripping barb roller (2) is provided with a double barb roller feeding structure (119). The discharge side of the large cylinder (1) is provided with a transfer piercing roller (102) and a negative pressure roller (118) arranged in parallel along the discharge direction. The large styrene (1) is surrounded by several sets of coarse combing components in the area above the horizontal center line; The gripping barb roller (2) rotates in opposite directions with the stripping barb roller (3), the stripping barb roller (3) rotates in opposite directions with the large cylinder (1) and with the transfer barb roller (102), and the transfer barb roller (102) rotates in opposite directions with the negative pressure roller (118).

2. The bamboo fiber combing machine according to claim 1, characterized in that: The double-pinned roller feeding structure (119) includes feeding rollers (31) arranged horizontally side by side from top to bottom. The surface of the feeding rollers (31) is provided with needle-punched strips (32) in a spiral shape. The two feeding rollers (31) are arranged to rotate facing each other and comb the material along the axial direction through the needles distributed in a spiral shape. The distance between the two feeding rollers (31) is adaptively adjusted to form a feeding gap (33).

3. The bamboo fiber combing machine according to claim 2, characterized in that: The needle bar (32) includes a base bar (52) that is spirally wound on the surface of the feed roller (31). The surface of the base bar (52) is provided with a plurality of integrally formed needle teeth (46) arranged in parallel along its extension direction. The needle teeth (46) are fixed to the base bar (52) by welding points (51) and fixing rings (50).

4. The bamboo fiber carding machine according to claim 2, characterized in that: The needle-punch teeth (46) are arranged in a triangular shape along the axial direction of the feed roller (31); the needle-punch teeth (46) are arranged in a triangular shape along the radial direction of the feed roller (31); along the axial direction of the feed roller (31), the needle-punch teeth (46) include a tooth tip angle (47), a tooth flank angle (48) and a tooth root angle (49), and the tooth tip angle (47) is located behind the tooth root angle (49) along the rotation direction of the feed roller (31).

5. The bamboo fiber combing machine according to claim 1, characterized in that: The rotational speed of the stripping barb roller (3) is greater than that of the gripping barb roller (2). A first stripping gap (4) is provided between the gripping barb roller (2) and the stripping barb roller (3). A second stripping gap (5) is provided between the stripping barb roller (3) and the large cylinder (1). The gap of the first stripping gap (4) or the second stripping gap (5) can be adjusted.

6. The bamboo fiber combing machine according to claim 1, characterized in that: A scraper (15) is vertically provided in the area below the stripping roller (3). The scraper (15) is slidably arranged in the vertical and horizontal directions by an adjustment mechanism. The adjustment mechanism includes a slide (16), a vertical plate (17), an adjustment handle (18), a rectangular sliding hole (19), a rotating rod (20), an external thread section (21), and a horizontal fixing nut (22). A matching stripping arc guide plate (12) is fixedly provided below the stripping roller (3). Long strip screening holes (88) are evenly distributed on the surface of the stripping arc guide plate (12).

7. The bamboo fiber combing machine according to claim 1, characterized in that: Each coarse combing assembly includes two coarse gripping barn rollers (54) and a coarse stripping barn roller (53) arranged facing each other, with the coarse gripping barn rollers (54) and the large cylinder (1) arranged facing each other. The comb needle density on the surface of several coarse gripping barn rollers (54) is arranged in an increasing manner along the rotation direction of the large cylinder (1); the comb needle density on the surface of several coarse peeling barn rollers (53) is arranged in an increasing manner along the rotation direction of the large cylinder (1).

8. The bamboo fiber combing machine according to claim 7, characterized in that: The coarse gripping barb roller (54) and the coarse peeling barb roller (53) adjust their adjacent spacing and their spacing with the large cylinder (1) respectively through the carding roller adjustment structure; The carding roller adjustment structure includes an adjustment seat (69), which is oscillatingly mounted on an adjustment fixing frame (68). The adjustment fixing frame (68) is fixedly connected to the carding frame (6) at the end of the large cylinder (1). One end of the adjustment seat (69) is provided with a roller support structure (43). The adjustment seat (69) also slides to adjust its position through a sliding structure, which includes a guide block (27) and a guide groove (28). An angle positioning bolt (59) for fixing the oscillating position and a position positioning structure for fixing the sliding position are provided between the adjustment seat (69) and the adjustment fixing frame (68). The position positioning structure includes a positioning stud (63), a positioning plate (64), a positioning nut (65), and a positioning washer (66).

9. The bamboo fiber combing machine according to claim 1, characterized in that: The large cylinder (1) has detachable bottom plates (95) installed on both sides below it in an arc shape. The upper end of the bottom plate (95) is vertically raised and lowered by a top adjustment assembly (93) and is detachably connected to the top adjustment assembly (93). The top adjustment assembly (93) includes a top guide seat (96), a top slide seat (97), a top insert cylinder (98), a top insert column (99), a top locking knob (70), a top horizontal plate section (72), and a top height adjustment bolt (73). The top guide seat (96) is provided with a first sliding hole (89) and is connected to the top through the first bolt (90). The bottom plate (95) is fixed in place by fitting the insertion hole (91); the lower end of the bottom plate (95) is set to move vertically up or down or swing through the bottom adjustment assembly (94) and is detachably connected to the bottom adjustment assembly (94). The bottom adjustment assembly (94) includes a bottom support (74), a bottom guide (75), a bottom slide (76), a bottom insertion cylinder (77), a bottom insertion column (78), a bottom locking knob (79), a bottom horizontal plate section (80), and a bottom height adjustment bolt (81). The bottom guide (75) is provided with a second sliding hole (83), which is fixed in place by fitting the bottom insertion hole (92) with the second bolt (84).

10. The bamboo fiber combing machine according to claim 1, characterized in that: The negative pressure roller (118) includes a horizontally rotating mesh cylinder (105), in which a negative pressure suction cylinder (106) is inserted and fixed in position. Two air guide plates (109) are fixedly connected in parallel along the circumference on the outer wall of the negative pressure suction cylinder (106). The two air guide plates (109) extend along the axial direction of the mesh cylinder (105). An anti-friction gap is provided between the outer end of the air guide plate (109) and the inner wall of the mesh cylinder (105), and a negative pressure suction cavity (107) close to the transfer piercing roller (102) is formed through the area between the two air guide plates (109). The mesh cylinder (105) is provided with end plates (111) and plug plates (113) at both ends, which are installed in cooperation with the negative pressure support roller seat (112) through a support ring (114). The air guide plate (109) is provided with an elongated suction hole (110).

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