A continuous opening and carding device for polylactic acid long fibers

Abstract

The present invention relates to the technical field of fiber material production, and in particular to a continuous opening and combing device for polylactic acid long fibers. It comprises a feed roller frame, which is provided with a group of feed roller frames, all of which are arranged on the front side of a machine base, and upper and lower symmetrical feeding rollers and cotton feeding rollers are also rotatably arranged between the two sides of the machine base, and the surfaces of the feeding rollers and cotton feeding rollers are provided with needle clothing; a combing mechanism is arranged on the guide roller frame for flattening and combing operations of long fibers. The present invention realizes an integrated process of long fiber opening and combing operations through the opening treatment of the feeding roller and the cotton feeding roller, the fine combing of the needle roller, the smoothing treatment of the toggle plate, and the leveling treatment of the flattening roller frame, so as to form a coherent operation with the long fibers, reduce the occurrence of accumulation and discontinuity problems, and ensure that the produced quilt can be in a good and smooth arrangement state, thereby improving the overall quality of the quilt and improving the comprehensive performance of the final product.

Description

Technical Field

[0001] The invention relates to the technical field of fiber material production, and in particular to a continuous opening and combing device for polylactic acid long fibers. Background Art

[0002] As a synthetic fiber based on polylactic acid, polylactic acid fiber has abundant and environmentally friendly raw material sources. It is mainly made from renewable plant resources rich in starch or sugar, such as corn and sugarcane, through fermentation. Polylactic acid fiber not only has good physical properties, but is also regarded as an environmentally friendly material due to its biodegradability, suitable for the sustainable development of the textile industry.

[0003] In the fiber manufacturing process, opening and combing are important steps to ensure that the fiber can be smoothly processed in subsequent textile processing. At present, most of the widely used polylactic acid fibers in the market are in the form of short fibers. This type of fiber is prone to accumulation during processing, which makes the quilt produced intermittent and irregular. This not only interrupts the continuity of production, but also may lead to reduced production efficiency and damaged product quality. In order to overcome these challenges, the use of polylactic acid long fibers instead of short fibers has become a feasible solution. However, the processing of long fibers also has difficulties. In the traditional opening and combing process, these two processes are usually performed separately, resulting in the overall processing process being intermittent, making the processing effect incoherent, and then resulting in the overall production effect of the quilt not being smooth and complete. In view of the above problems, a continuous opening and combing device for polylactic acid long fibers is proposed, which can realize the continuous opening and combing of long fibers to replace the intermittent processing in the traditional method, avoid the occurrence of clumping and irregularity of the finished quilt, thereby improving the continuity and efficiency of production. Summary of the invention

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a polylactic acid long fiber continuous opening and combing equipment, which can realize the continuous opening and combing of the long fibers to replace the intermittent processing in the traditional method, avoid the occurrence of clumping and irregularity of the finished product, thereby improving the continuity and efficiency of production.

[0005] The technical solution is: providing such a polylactic acid long fiber continuous opening and carding device, comprising:

[0006] Machine base;

[0007] A feed roller frame, which is provided in a group, is arranged at the front side of the machine base for feeding the fibers. A feeding roller and a cotton feeding roller are rotatably arranged between the two sides of the machine base, and the surfaces of the feeding roller and the cotton feeding roller are provided with needle cloths, and the feeding roller is located above the cotton feeding roller for transmitting and loosening the fibers. A guide roller frame, a leveling roller frame and a conveyor are arranged on the machine base from front to back, and a group of pulley groups are respectively connected between the roller ends on both sides of the guide roller frame. A traction drum connected to the outlet of the guide roller frame is rotatably arranged between the two side frames of the leveling roller frame, and a mounting frame spanning above the leveling roller frame is also arranged on the machine base, and a pressing component for flattening the fiber blanket is arranged on the mounting frame;

[0008] The housing is arranged on the base and used for covering the components arranged on the base;

[0009] The combing mechanism is arranged on the guide roller frame and is used for flattening and combing the long fibers.

[0010] Preferably, the combing mechanism includes two groups of guide rods arranged on both sides of the guide roller frame, the two guide rods in the same group are arranged in a front-to-back interval layout, and a sliding assembly plate is arranged between the four guide rods, and an elastic member is arranged between the assembly plate and the guide rods. A plurality of needle rollers for combing long fibers are rotatably arranged between the bottom two sides of the assembly plate, and a toggle plate staggered with the needle rollers is also slidably arranged at intervals at the bottom of the assembly plate, the toggle plate is used for leveling the combed fibers, and a group of synchronous plates are rotatably arranged on both sides of the assembly plate, and a S-shaped groove is provided on the synchronous plates, and a convex rod slidingly inserted in the S-shaped groove of the adjacent synchronous plate is provided on the pulleys of the pulley groups on both sides to move the assembly plate and its upper parts up and down, and a pushing component for pushing the toggle plate to move is also provided on the assembly plate.

[0011] Preferably, the pushing assembly includes a contact rod arranged between the two sides of the shell, connecting rods are symmetrically connected between each toggle plate, a connecting frame connected to the ends of the two connecting rods is slidably arranged on the assembly plate, and inclined plates that contact and cooperate with the contact rod are symmetrically arranged on the connecting frame to enable the toggle plate to move forward and backward.

[0012] Preferably, the pressing assembly comprises rodless cylinders symmetrically arranged on both sides of the mounting frame, and a flattening roller frame for flattening the fiber blanket is arranged between the sliders of the two rodless cylinders.

[0013] Preferably, a scraping mechanism for scraping the fiber blanket is provided on the mounting frame, the scraping mechanism comprising two sets of guide frames arranged on both sides of the mounting frame at a front and rear interval, a barbed plate is slidably arranged between the two guide frames on the same side, two elastic members are arranged between the two ends of the barbed plate and the corresponding guide frames, and telescopic rods with telescopic ends connected to the barbed plates on the same side are arranged on the front and rear sides of the mounting frame.

[0014] Preferably, the scraping mechanism further comprises protruding rod rings arranged at both ends of the roller of the flattening roller frame, and both ends of the barbed plate are provided with wedge-shaped rods contacting and cooperating with the protruding rod ring on the same side.

[0015] Preferably, it also includes a scraper inserted on the top surface of the shell, the scraper is in contact with the feed roller, an inclined abutment plate is provided on the front side of the assembly plate, the scraper and the abutment plate are in contact with each other, and a pricking rod is arranged in an array on the front side of the scraper, and the pricking rod is embedded in the needle clothing as the feed roller moves for cleaning the residual material.

[0016] Preferably, the frame body of the flattening roller frame is in a concave shape that fits the roller of the flattening roller frame, and is suitable for pressing down and flattening the fiber blanket in coordination with its movement.

[0017] The present invention overcomes the shortcomings of the prior art and can achieve the following beneficial effects:

[0018] 1. The present invention realizes the integrated process of long fiber opening and combing operation through the opening treatment of the feeding roller and the cotton feeding roller, the fine combing of the needle roller, the smoothing treatment of the toggle plate and the leveling treatment of the flattening roller frame, so as to form a coherent operation with the long fibers and reduce the occurrence of accumulation and discontinuity problems. This not only ensures that the long fibers are fully opened and combed during the processing, but also makes the filling between the fibers more compact and uniform, and ensures that the manufactured quilt can be in a good and smooth arrangement state, thereby improving the overall quality of the quilt and improving the comprehensive performance of the final product.

[0019] 2. The present invention, through the setting of the scraping mechanism, can effectively enhance the compactness between fibers through the reciprocating motion of the barbed plate, making the quilt more fitting and dense, which can not only meet the processing requirements of quilts with fibers of different densities, but also significantly enhance the flexibility and wide applicability of the equipment.

[0020] 3. The present invention uses a scraper with a barbed bar to clean the residual material on the feeding roller, which not only helps to maintain the clean state of the inside of the machine and extend the service life of the device, but also simplifies daily maintenance work, reduces material waste in the production process, and improves resource utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a cross-sectional view of the three-dimensional structure of the shell of the present invention after being cut open.

[0023] Figure 3 It is a schematic diagram of the planar structure of the feed roller frame, feeding roller, cotton feeding roller and other components of the present invention from a left perspective.

[0024] Figure 4 It is a three-dimensional structural schematic diagram of various components of the combing mechanism of the present invention.

[0025] Figure 5 It is a three-dimensional structural schematic diagram of components such as the toggle plate, needle roller and synchronous plate of the present invention.

[0026] Figure 6 It is a three-dimensional structural schematic diagram of some components of the mounting frame and the scraping mechanism of the present invention.

[0027] Figure 7 It is a three-dimensional structural schematic diagram of each component of the scraping mechanism of the present invention.

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the assembly plate, the scraper and the thorn rod of the present invention.

[0029] The markings in the accompanying drawings provided by the present invention are: 1, machine base, 100, needle clothing, 101, feed roller frame, 102, feeding roller, 1021, cotton feeding roller, 103, guide roller frame, 1031, pulley group, 104, leveling roller frame, 1041, traction cylinder, 105, mounting frame, 106, rodless cylinder, 1061, flattening roller frame, 107, conveyor, 2, shell, 3, carding mechanism, 31, guide rod, 32, assembly plate, 321, contact rod, 322, connecting frame, 323, inclined plate, 33, elastic member 1, 34, toggle plate, 35, needle roller, 36, synchronous plate, 4, scraping mechanism, 41, guide frame, 42, telescopic rod, 43, barbed plate, 431, elastic member 2, 44, wedge rod, 45, convex rod ring, 5, scraper, 51, thorn rod. DETAILED DESCRIPTION

[0030] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0031] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] Embodiment: A continuous opening and combing device for polylactic acid long fibers, such as Figure 1-5 As shown, including:

[0033] The machine base 1 is used as the basic support carrier of the whole device, and its front side is a table surface which is inclined downward from front to back to facilitate the feeding of long fibers;

[0034] The feeding roller frame 101 is provided in a group. Two feeding roller frames 101 are arranged on the front table of the machine base 1 at intervals in front and back for the feeding operation of the fibers to transport the long fibers to the inside of the device. A feeding roller 102 and a cotton feeding roller 1021 are rotatably arranged between the left and right sides of the machine base 1. The surfaces of the feeding roller 102 and the cotton feeding roller 1021 are both provided with a needle cloth 100, which can crush and loosen the long fibers passing through. The feeding roller 102 is located above the cotton feeding roller 1021. Based on the left viewing angle, the feeding roller 102 and the cotton feeding roller 1021 rotate in opposite directions. The feeding roller 102 rotates clockwise, while the cotton feeding roller 1021 rotates counterclockwise, so that the long fibers can be transported from front to back, and the needle cloth 100 is used to loosen the integrated long fibers so that the fibers can be loosened. In order to loosen the fibers for subsequent combing operations, a guide roller frame 103, a leveling drum frame 104 and a conveyor 107 are arranged on the top of the machine base 1 from front to back. The guide roller frame 103 is located at the rear side of the cotton feeding roller 1021, and a group of pulley groups 1031 are respectively connected between the two side ends of the roller of the guide roller frame 103. A traction drum 1041 connected to the outlet of the guide roller frame 103 is rotatably arranged between the left and right side frames of the leveling drum frame 104, which can pull the fibers transported by the guide roller frame 103 into the next process, and a mounting frame 105 spanning the top of the leveling drum frame 104 is also arranged on the machine base 1. A pressing component for flattening the fiber blanket is arranged on the mounting frame 105, which can flatten the fiber blanket to a suitable thickness, so that the blanket fibers are more compact and fit;

[0035] The housing 2 is arranged on the machine base 1, and is used to cover the components on the machine base 1, and provide surrounding blocking protection for the components. A driving member (not shown in the figure) capable of driving the feed roller frame 101, the feeding roller 102, the cotton feeding roller 1021, the guide roller frame 103, the leveling drum frame 104, the traction drum 1041 and the conveyor 107 to operate is installed on the right side of the housing 2;

[0036] The combing mechanism 3 is arranged on the guide roller frame 103 and is used for the flattening and combing operations of the long fibers.

[0037] like Figure 2 , Figure 4 and Figure 5As shown, the combing mechanism 3 includes two groups of guide rods 31 arranged on the left and right sides of the guide roller frame 103, each group of guide rods 31 has two guide rods 31, and the two guide rods 31 in the same group are arranged in a front-to-back symmetrical spacing, and a sliding assembly plate 32 is arranged between the four guide rods 31, allowing the assembly plate 32 to slide upward or downward under the guidance of the guide rods 31, and an elastic member 33 is arranged between the assembly plate 32 and the guide rods 31. In this embodiment, the elastic member 33 is a spring, which can provide elastic support for the movement of the assembly plate 32 to provide a reset operation. Two needle rollers 35 for combing long fibers are rotatably arranged between the left and right sides of the bottom of the assembly plate 32, and a toggle plate 34 staggered with the needle roller 35 is also slidably arranged at the bottom of the assembly plate 32. The toggle plate 34 is used for leveling the fibers after combing, so that the toggle plate 34 and the needle roller 35 can follow the up and down movement of the assembly plate 32 to realize the combing of the fibers. The fibers gradually present a mesh shape, and then present a prototype of a quilt. Then, the reciprocating movement of the toggle plate 34 peels off the overly loose and redundant fiber layer, retaining a solid and smooth quilt layer, thereby obtaining the desired combing effect, not only removing excess impurities, but also retaining a high-quality fiber quilt layer, so that the quality of the final product is improved. A group of synchronous plates 36 are rotatably arranged on the left and right sides of the assembly plate 32. The layout of the synchronous plates 36 and the guide rod 31 are consistent. A slot is provided on the synchronous plates 36, and a convex rod slidingly penetrated in the slot of the adjacent synchronous plates 36 is provided on the pulleys of the pulley groups 1031 on both sides. The synchronous plates 36 follow the operation of the convex rods on the pulley groups 1031, thereby driving the assembly plate 32 to automatically move up and down on the guide rod 31 under the action of thrust, thereby ensuring the continuity of the operation of the toggle plate 34 and the needle roller 35. A pushing component for pushing the toggle plate 34 to move is also provided on the assembly plate 32.

[0038] like Figure 4 and Figure 5 As shown, the pushing assembly includes a contact rod 321 arranged between the left and right sides of the shell 2, and connecting rods are symmetrically connected between each toggle plate 34. A connecting frame 322 connected to the rear ends of the two connecting rods is slidably arranged on the assembly plate 32, and an inclined plate 323 that contacts and cooperates with the contact rod 321 is symmetrically arranged on the connecting frame 322, so that the inclined plate 323 can follow the movement of the assembly plate 32 and contact the contact rod 321, and then use the inclined surface to push the toggle plate 34 forward, so that when the fiber layer contacts the toggle plate 34, excess loose fibers will be subjected to thrust and then detached from the compact fiber quilt layer to retain the complete fiber layer and remove the loose parts, thereby ensuring the quality and effect of the molded quilt.

[0039] In combination with the above, the integrated and process-based production of long fibers is achieved through continuous feeding, opening, combing and smoothing. This not only ensures that the entire device can adapt to the continuous production needs of long fibers, but also significantly improves the overall comprehensive performance compared with short fiber processing. As a result, the production efficiency and product quality of the device are effectively improved.

[0040] like Figure 2 and Figure 3 As shown, the pressing assembly includes rodless cylinders 106 symmetrically arranged on both sides of the top of the mounting frame 105, and a flattening roller frame 1061 for flattening the fiber quilt is arranged between the sliders of the two rodless cylinders 106. The frame body of the flattening roller frame 1061 is in a concave shape that fits the roller of the flattening roller frame 104, and is suitable for pressing down and flattening the fiber quilt to effectively control the thickness of the quilt, so that the fibers are more compact and fit more closely, and the quilt can be flatter and tighter.

[0041] like Figure 2 , Figure 6 and Figure 7 As shown, a scraping mechanism 4 for scraping the fiber quilt is provided on the mounting frame 105, and the scraping mechanism 4 includes two sets of guide frames 41 arranged on both sides of the mounting frame 105 at a front and rear interval, and a barbed plate 43 is slidably arranged between the two guide frames 41 on the same side, and the barbed plate body of the barbed plate 43 is in a detachable state, so that it can be adjusted according to the requirements of different fiber densities, and an elastic member 431 is arranged between the left and right ends of the barbed plate 43 and the corresponding guide frame 41. In this embodiment, the elastic member 431 is a spring, and a telescopic rod 42 whose telescopic end is connected to the barbed plate 43 on the same side is arranged on the front and rear sides of the mounting frame 105, so that the barbed plate 43 can utilize the elastic thrust of the elastic member 431 and the telescopic support of the telescopic rod 42 to present a reciprocating movement, thereby reciprocatingly pricking the fiber quilt and filling the gaps between the fibers, and by complying with the rolling operation of the leveling roller frame 104, the fibers on the quilt can be further combed and flattened, so that the fibers can be more uniform and smooth.

[0042] like Figure 6 and Figure 7 As shown, the scraping mechanism 4 also includes convex rod rings 45 arranged at the left and right ends of the roller of the flattening roller frame 1061, and the left and right ends of the barb plate 43 are provided with wedge rods 44 that contact and cooperate with the convex rod ring 45 on the same side. The contact and cooperation between the wedge rod 44 and the convex rod ring 45 are utilized to realize the inclined contact and then push the barb plate 43 to follow the rotation frequency of the flattening roller frame 104 to realize synchronous movement, thereby stabilizing the movement frequency of the barb plate 43, realizing the scraping treatment of the surface of the fiber quilt, and improving the quality of the finished product.

[0043] like Figure 1 , Figure 2 and Figure 8 As shown, it also includes a scraper 5 inserted on the top surface of the shell 2, the scraper 5 is in contact with the feeding roller 102, and a back plate inclined from back to front is arranged on the front side of the assembly plate 32, the scraper 5 is in contact with the back plate, and a pricking rod 51 is arranged in an array on the front side of the scraper 5. The pricking rod 51 moves with the feeding roller 102 and is embedded in the needle clothing 100 for cleaning the residual material, thereby reducing the material waste in the production process and improving the utilization rate of resources.

[0044] When using the device for long fiber opening and combing, first start the device so that the various mechanisms inside the device start to operate, then place the long fibers on the front side of the machine base 1, and as the long fibers come into contact with the feed roller frame 101, the long fibers are driven by the feed roller frame 101 and are rolled in, and then begin to be transported from front to back toward the inside of the shell 2, and then the long fibers will enter between the feeding roller 102 and the cotton feeding roller 1021, and as the two rotate, the long fibers are continuously crushed by the needle cloth 100, causing the long fibers to be crushed and deformed, and the fibers are forced to loosen, thereby achieving a preliminary opening operation, allowing the long fibers to be in a loose state for subsequent operations, and then the fibers after the preliminary opening will continue to move backwards, so that they are guided by the front side abutment plate of the assembly plate 32, and then move to the guide roller frame 103 at the rear, and the guide roller frame 103 pushes the fibers to move continuously from front to back, and in this process, the leather on both sides The pulley group 1031 is driven by the roller of the guide roller frame 103 to operate continuously, and then the pulleys operate synchronously, so that the convex rod on the pulley follows the rotation to push the corresponding synchronous plate 36 to move, so that the synchronous plate 36 rotates synchronously with the movement of the convex rod, and then the assembly plate 32 connected thereto is moved, and the assembly plate 32 slides downward on the guide rod 31, and then the elastic member 33 is deformed, so that the needle roller 35 contacts the fiber, and then reciprocates up and down to comb the fiber, making the fiber more compact and thus forming a preliminary quilt shape. At the same time, because the assembly plate 32 moves downward, the inclined plate 323 contacts the contact rod 321, and under the influence of the inclined surface of the inclined plate 323, the connecting frame 322 connected thereto is pushed to slide, driving the toggle plate 34 to translate, so as to smooth the preliminary formed fiber quilt, so that the excess fiber will be pushed away from the quilt by the toggle plate 34, retaining a flatter formed fiber quilt;

[0045] Subsequently, the formed fiber blanket will follow the operation of the guide roller frame 103 and move to the traction drum 1041. The formed fiber blanket follows the rotation of the traction drum 1041 and enters the roller of the flattening roller frame 104. Then the rodless cylinder 106 is started, thereby pushing the rodless cylinder 106 to push down the flattening roller frame 1061, so that the distance between the flattening roller frame 1061 and the flattening roller frame 104 can be controlled, so as to adjust the thickness of the blanket. As the formed fiber blanket moves, it first contacts the barbed plate 43 on the front side. Because the tire is in the initial forming state, the tire needs to be further consolidated to make it more solid and flat. During the rotation of the leveling roller frame 104, the convex rod ring 45 will rotate synchronously with the roller of the leveling roller frame 104, and then the convex rod ring 45 will come into contact with the wedge rod 44, and then push the wedge rod 44 to move back and forth intermittently, and the connected barb plate 43 will also be driven, so that the barb plate 43 constantly reciprocates between the guide frame 41, and the telescopic rod 42 moves in accordance with the movement of the barb plate 43. The elastic member 431 is deformed accordingly, and the barbed plate 43 contacts the moving fiber quilt, compacts the fibers on the quilt, and follows the movement of the leveling roller frame 104 to achieve a synchronous combing effect on the quilt, so that the fibers are more deeply inserted, and the gaps between the fibers are smoother, while the excess fibers will follow the movement of the leveling roller frame 104 and stay, and a flat and stable quilt layer will stay on the leveling roller frame 104. When the quilt moves to the top of the leveling roller frame 104, it will be pressed by the flattening roller. The pressure of the frame 1061 smoothes the fibers, and then the quilt enters the barbed plate 43 at the rear side, and is reciprocated again to make the quilt more stable, and the filling between the fibers is more compact and full. Then, the final quilt moves down to the conveyor 107 at the rear, and then flows out of the device through transportation. From then on, continuous long fiber opening and combing processing is realized, which not only solves the problem of short fiber accumulation, but also ensures that in the process of opening and combing integration, a higher quality quilt product can be presented;

[0046] Then the scraper 5 can be pulled out. During the operation, the pricking rod 51 on the scraper 5 will follow the movement of the feeding roller 102 to scrape off the excess residue attached to the needle cloth 100 of the feeding roller 102, and then the residue will adhere to the pricking rod 51 of the scraper 5 to achieve the effect of cleaning the feeding roller 102. After the device stops operating, the scraper 5 can be taken out of the housing 2 for cleaning, and the overall operation process is completed.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A continuous opening and carding device for polylactic acid long fibers, comprising: Machine base; It is characterized by further comprising: A feed roller frame, which is provided in a group, is arranged at the front side of the machine base for feeding the fibers. A feeding roller and a cotton feeding roller are rotatably arranged between the two sides of the machine base, and the surfaces of the feeding roller and the cotton feeding roller are provided with needle cloths, and the feeding roller is located above the cotton feeding roller for transmitting and loosening the fibers. A guide roller frame, a leveling roller frame and a conveyor are arranged on the machine base from front to back, and a group of pulley groups are respectively connected between the roller ends on both sides of the guide roller frame. A traction drum connected to the outlet of the guide roller frame is rotatably arranged between the two side frames of the leveling roller frame, and a mounting frame spanning above the leveling roller frame is also arranged on the machine base, and a pressing component for flattening the fiber blanket is arranged on the mounting frame; The housing is arranged on the base and used for covering the components arranged on the base; A combing mechanism is arranged on the guide roller frame for flattening and combing the long fibers; The combing mechanism includes two groups of guide rods arranged on both sides of the guide roller frame, the two guide rods in the same group are arranged in a front-to-back interval, and a sliding assembly plate is arranged between the four guide rods, and an elastic member is arranged between the assembly plate and the guide rods. A plurality of needle rollers for combing long fibers are rotatably arranged between the bottom two sides of the assembly plate, and a toggle plate staggered with the needle rollers is also slidably arranged at intervals at the bottom of the assembly plate. The toggle plate is used for leveling the fibers after combing, and a group of synchronous plates are rotatably arranged on both sides of the assembly plate, and a single-shaped groove is provided on the synchronous plates, and a convex rod slidingly inserted in the single-shaped groove of the adjacent synchronous plate is provided on the pulleys of the pulley groups on both sides, so that the assembly plate and its upper components can move up and down, and a pushing component for pushing the toggle plate to move is also provided on the assembly plate.

2. The continuous opening and carding equipment for polylactic acid long fibers according to claim 1, characterized in that: The pushing assembly includes a contact rod arranged between the two sides of the shell, connecting rods are symmetrically connected between each toggle plate, a connecting frame connected to the ends of the two connecting rods is slidably arranged on the assembly plate, and inclined plates that contact and cooperate with the contact rods are symmetrically arranged on the connecting frame to enable the toggle plate to move forward and backward.

3. The continuous opening and combing device for polylactic acid long fibers according to claim 2, characterized in that: The pressing assembly comprises rodless cylinders symmetrically arranged on both sides of the mounting frame, and a flattening roller frame for flattening the fiber blanket is arranged between the sliders of the two rodless cylinders.

4. The continuous opening and carding equipment for polylactic acid long fibers according to claim 3, characterized in that: A scraping mechanism for scraping the fiber blanket is provided on the mounting frame, and the scraping mechanism includes two sets of guide frames arranged on both sides of the mounting frame at a front and rear interval, a barbed plate is slidably arranged between the two guide frames on the same side, two elastic members are arranged between the two ends of the barbed plate and the corresponding guide frames, and telescopic rods with telescopic ends connected to the barbed plates on the same side are arranged on the front and rear sides of the mounting frame.

5. The continuous opening and carding equipment for polylactic acid long fibers according to claim 4, characterized in that: The scraping mechanism also includes convex rod rings arranged at both ends of the roller of the flattening roller frame, and both ends of the barbed plate are provided with wedge-shaped rods contacting and matching with the convex rod ring on the same side.

6. The continuous opening and carding equipment for polylactic acid long fibers according to claim 5, characterized in that: It also includes a scraper inserted on the top surface of the shell, the scraper is in contact with the feed roller, an inclined abutment plate is arranged on the front side of the assembly plate, the scraper and the abutment plate are in contact with each other, and a pricking rod is arranged in an array on the front side of the scraper, and the pricking rod is embedded in the needle cloth as the feed roller moves for cleaning the residual material.

7. The continuous opening and carding equipment for polylactic acid long fibers according to claim 6, characterized in that: The frame body of the flattening roller frame is in a concave shape that fits the roller of the flattening roller frame, and is used to cooperate with the movement of the fiber blanket to press it down and flatten it.

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