Method for filling and laying polylactic acid long fiber bundles in bedding
By using polylactic acid long fiber bundle wire filling and laying method in the bedding, the long fiber bundle wire uniform paving device is used for mixing and fluffing, the problem of insufficient integrity and fluffy in use of staple fiber cotton wool is solved, and good results are achieved Warm performance and long-term use effect.
Patent Information
- Application Number
- CN202411386157.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2024-12-27
AI Technical Summary
The staple fiber cotton wool in the existing bedding is poor in integrity and fluffy during use, especially when washed, it will gather into groups, resulting in a decrease in warming performance. It is urgent to improve the fiber filler and its laying method.
The filling and laying method of polylactic acid long fiber bundle wires in bedding is adopted. The long fiber bundle wire uniform paving device is used to mix and fluff a number of different types of fiber bundle wires to form a bunch of uninterrupted long fiber cotton wool, using the front and back and left and right moving mechanisms. Drive the mixed fluffy paver to reciprocate above the filling mold frame to form a filling with uniformly arranged fronds and wefts.
It realizes good integrity and fluffy of the bedding filling, maintains long-term use effect, avoids the phenomenon of clumping after washing, and improves the warmth performance.
Smart Images
Figure CN119191216A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of textile production, and in particular relates to a method for filling and laying polylactic acid long fiber bundles in a quilt. Background Art
[0002] At present, the quilts sold on the market are generally filled with short-fiber cotton batting, which is usually a product obtained by cutting long fibers into a certain length after spinning. The short-fiber cotton batting spread and filled in the quilt has the following disadvantages during people's use: the integrity and fluffiness of the short-fiber cotton batting in the quilt are not good enough, especially after washing, the short-fiber cotton batting is more dense (not fluffy) in the quilt, and will gather into more clumps (no longer have integrity), so the warmth retention performance is greatly reduced during use. Therefore, it is urgent to make corresponding improvements to the existing fiber fillings in quilts and their laying methods. Summary of the invention
[0003] The invention provides a method for filling and laying polylactic acid long fiber bundles in a quilt, which has simple steps, is easy to operate and can ensure that the quilt can maintain good integrity and fluffiness after long-term use.
[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: a method for filling and laying polylactic acid long fiber bundles in a quilt, comprising the following steps: (1) Place the filler mold frame horizontally on the long fiber bundle uniform spreading device; The long fiber bundle uniform spreading device comprises a horizontally arranged rectangular fixed frame, a support is provided at the bottom of the fixed frame, the length direction of the fixed frame is the front-to-back direction, a front-to-back horizontal moving mechanism is provided on the fixed frame, a left-to-right horizontal moving mechanism is provided on the front-to-back horizontal moving mechanism, and a long fiber bundle mixed fluffing spreader with a downward outlet is provided on the left-to-right horizontal moving mechanism; (2) The front-to-back horizontal moving mechanism, the left-to-right horizontal moving mechanism and the long-fiber tow mixing and fluffing spreader are started. The front-to-back horizontal moving mechanism and the left-to-right horizontal moving mechanism respectively drive the long-fiber tow mixing and fluffing spreader to reciprocate in the front-to-back and left-to-right directions above the filler mold frame. Multiple tows of different varieties are mixed and fluffed by the long-fiber tow mixing and fluffing spreader to form a continuous bundle of long-fiber cotton wool that is evenly spread inside the filler mold frame. (3) After the long-fiber cotton filling is laid, the baffles around the filling mold frame are laid flat, and the laid long-fiber cotton filling is moved horizontally to the seam working surface for sewing to complete the bedding production.
[0005] The front-to-back horizontal moving mechanism includes a moving frame and two racks horizontally arranged along the front-to-back direction, the two racks are respectively fixed on the left and right sides of the top of the fixed frame, and a rotating shaft is rotatably arranged on the front and rear sides of the moving frame respectively, and the two rotating shafts are horizontally arranged along the left and right directions, and a gear is installed at both ends of each rotating shaft, the lower part of the gear at the front end of the rotating shaft is meshed with a rack on the front side, and the lower part of the gear at the rear end of the rotating shaft is meshed with a rack on the rear side, and the moving frame is provided with a front-to-back moving motor that is transmission-connected to one end of one of the rotating shafts, and the front and rear ends of the fixed frame are respectively provided with a front limit sensor and a rear limit sensor.
[0006] The left and right horizontal moving mechanism includes left and right moving motors, guide rails, left bearing seats and right bearing seats arranged on the moving frame. The left bearing seat and the right bearing seat are respectively arranged on the left and right sides of the moving frame. A lead screw is rotatably arranged between the left bearing seat and the right bearing seat. A nut is threadedly connected to the lead screw. The nut is fixedly connected to the bottom of the long fiber tow mixed fluffing spreader. The guide rail is parallel to the lead screw. A slider sliding along the guide rail is arranged at the bottom of the long fiber tow mixed fluffing spreader. A left limit sensor and a right limit sensor are respectively arranged at the left and right ends of the guide rail.
[0007] The long fiber bundle mixing fluffing spreader includes an outer shell, in which a wire suction tube is horizontally arranged along the front-to-back direction, the rear end of the wire suction tube is connected to a main conical wire suction port, a plurality of rotating air flow inlet holes are evenly arranged on the wire suction tube along the circumferential direction, a compressed air heater is provided on the wire suction tube and is connected to the outer ports of the plurality of rotating air flow inlet holes, an auxiliary wire inlet tube with a high rear side and a low front side inclined is connected to the upper front end of the wire suction tube, the rear end of the auxiliary wire inlet tube is connected to an auxiliary conical wire inlet port, the front end of the wire suction tube is connected to a mixing fluffing tube, the rear end of the mixing fluffy tube is connected to the front end of the wire suction tube by a conical transition tube with a small rear side and a large front side, and the front end of the mixing fluffy tube is blocked and connected to a spreading tube opening downward.
[0008] The air inlet of the rotating air flow inlet hole is located on the left side of the air outlet, the center line of the rotating air flow inlet hole and the center line of the wire suction tube are arranged alternately, the angle between the center line of the rotating air flow inlet hole and the center line of the wire suction tube is an acute angle, and the wire suction tube is connected to a first temperature sensor located at the air outlet of the rotating air flow inlet hole; the mixing fluffing tube is connected to a second temperature sensor.
[0009] The compressed air heater includes a heating cylinder coaxially installed on the outside of the wire suction tube, annular plates connected to the outer circle of the wire suction tube are respectively provided at the front and rear ends of the heating cylinder, the inner circle of the heating cylinder and the outer circle of the wire suction tube between the two annular plates form a heating chamber, the air inlet of the rotating air flow inlet hole is located on the front side of the heating chamber, the rear side of the heating cylinder is connected to a compressed air inlet pipe, the outer circle of the heating cylinder is wrapped with an electric heating wire, and the outside of the electric heating wire and the outside of the annular plate are wrapped with thermal insulation cotton.
[0010] The specific process of step (2) is as follows: start the forward and backward moving motor and the left and right moving motor, the forward and backward moving motor drives a rotating shaft to rotate, the two gears on the rotating shaft mesh and roll on the rack, and at the same time drives the two gears on the other rotating shaft to mesh and roll on the rack; the left and right moving motor drives the lead screw to rotate, the nut connected to the lead screw moves left and right along the lead screw, and the slider slides along the guide rail; at the same time, multiple bundles of long fiber bundles of different varieties are gathered into a mixed bundle through their respective tensioners, and uniformly enter a pair of main control speed meter long wheels (used to measure the length of the conveyed long fiber bundle and control the speed of conveying the long fiber bundle), the main control speed meter long wheels send the long fiber bundle forward to the curling wheel group, the curling wheel group curls and deforms the long fiber bundle, and then the curled and deformed fiber bundle is separated and scattered by the opening device, and the separated and scattered long fiber bundle then enters the main conical suction port; high deformation bundles (such as parallel The two-component fiber) enters the auxiliary conical wire inlet after passing through a pair of auxiliary speed meter long wheels, and the rotation speed of the auxiliary speed meter long wheel and the main speed meter long wheel are always kept equal; the compressed air enters the heating cylinder through the compressed air inlet pipe, and the electric heating wire heats the compressed air inside the heating cylinder after being energized. The heated temperature of the compressed air is monitored in real time by the first temperature sensor, and the heated compressed air is sprayed into the wire suction tube through the rotating air flow inlet hole, and a spiral airflow is generated in the wire suction tube. The spiral airflow pushes the various fiber bundles forward and rotates and mixes, and enters the mixing and fluffing tube with a larger space through the conical transition tube. Under the action of high temperature and high pressure airflow, the various curled and deformed fiber bundles are fully mixed and fluffed, and finally discharged from the lower port of the spreading tube. With the movement back and forth and left and right, the entire mixed and fluffy fiber bundle is spread into the filling mold frame to form a long fiber cotton filling with uniform warp and weft arrangement.
[0011] During the reciprocating motion of the front and rear horizontal moving mechanism, the front limit sensor and the rear limit sensor respectively monitor the forward and backward movement positions of the moving frame. When the front limit sensor detects the moving frame, the signal is transmitted to the PLC controller, and the PLC controller instructs the front and rear moving motors to reverse and rotate, so that the moving frame moves backward. Similarly, when the rear limit sensor detects the moving frame, the signal is transmitted to the PLC controller, and the PLC controller instructs the front and rear moving motors to reverse and rotate, so that the moving frame moves forward.
[0012] During the reciprocating motion of the left and right horizontal moving mechanisms, the left limit sensor and the right limit sensor respectively monitor the positions of the long fiber tow mixed fluffy spreader moving to the left and right. When the left limit sensor detects the long fiber tow mixed fluffy spreader, the signal is transmitted to the PLC controller, and the PLC controller instructs the left and right moving motors to reverse and rotate, so that the long fiber tow mixed fluffy spreader moves to the right. Similarly, when the right limit sensor detects the long fiber tow mixed fluffy spreader, the signal is transmitted to the PLC controller, and the PLC controller instructs the left and right moving motors to reverse and rotate, so that the long fiber tow mixed fluffy spreader moves to the left.
[0013] The long fiber tow mixed fluffy spreader adopts the following moving strategy: it moves back and forth quickly in the left and right directions, and moves slowly forward or backward for a distance during this process, that is, the front and rear moving motors have low speeds and the left and right moving motors have high speeds; when the front limit sensor or the rear limit sensor detects that the front and rear horizontal moving mechanism has moved to the limit position, the PLC controller not only instructs the front and rear moving motors to reverse rotation, but also instructs the front and rear moving motors to increase speed and the left and right moving motors to decrease speed, that is, it moves quickly forward or backward, and moves slowly to the left or right; then, when the rear limit sensor or the front limit sensor detects that the front and rear horizontal moving mechanism has moved to the limit position, the front and rear moving motors reverse rotation again, the front and rear moving motors decrease speed and the left and right moving motors increase speed, and the above-mentioned movement measurement is repeated until the long fiber tows of specified weight or length are evenly spread, the front and rear moving motors and the left and right moving motors are turned off, and multiple tows of different varieties are suspended from being transported to the long fiber tow mixed fluffy spreader.
[0014] By adopting the above technical scheme, the present invention has the following advantages: a filler mold frame is placed on a fixed frame (with erectable baffles arranged around it), and the front and rear horizontal moving mechanisms and the left and right horizontal moving mechanisms work simultaneously, driving the long fiber tow mixed fluffing spreader to move back and forth and left and right at the same time, and the front and rear moving speeds and left and right moving speeds are adjustable. The long fiber tow mixed fluffing spreader mixes and fluffs several different specifications of polylactic acid long fiber tows under high temperature and high pressure airflow, and finally spreads them evenly into the filler mold frame to form long fiber cotton filling evenly arranged in warp and weft. When the long fiber cotton filling is laid, the baffles around the filler mold frame are laid flat, and the laid long fiber cotton filling is translated to the seam working surface for sewing to complete the bedding production.
[0015] The front-to-back horizontal moving mechanism of the present invention adopts a gear to move on a rack, and the left-to-right horizontal moving mechanism adopts a nut screw rod, which has high reliability and good anti-slip performance.
[0016] A plurality of rotating airflow inlet holes are evenly arranged on the closure of the wire suction tube, and are inclined and staggered with the center line of the wire suction tube. The heated compressed air can form a spiral airflow after entering the wire suction tube, and generate negative pressure on the main conical wire suction port and the auxiliary wire inlet tube, so that the fiber bundle enters the wire suction tube more smoothly.
[0017] The compressed air temperature of the mixing and fluffing process is monitored by the second temperature sensor to achieve the optimal mixing and fluffing effect. If the temperature is low, the power of the electric heating wire is increased, and if the temperature is high, the power of the electric heating wire is reduced.
[0018] After the long fiber tow mixed fluffy spreader changes direction during the forward and backward movement, the PLC controller sends speed change instructions to the forward and backward movement motor and the left and right movement motor respectively, and the speed of left and right movement and forward and backward movement is switched. This warp and weft movement trajectory that moves forward and backward and left and right at the same time can achieve the purpose of uniform warp and weft arrangement of the cotton wool, and can also achieve the purpose of anti-overlapping paving.
[0019] To sum up, the present invention has a scientific principle, is easy to operate, is evenly spread with high efficiency and good effect. The long fiber bundle cotton filling produced by the present invention is mixed and fluffy through the action of high-temperature rotating airflow. After spreading, there is only a bundle of uninterrupted long fiber filaments, which has good smoothness, integrity and fluffiness. It will not clump after repeated washing, and has broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall structure of the device for evenly spreading medium and long fiber bundles of the present invention; Figure 2 yes Figure 1 A top view of Figure 3 yes Figure 1 A cross-sectional structural diagram of a long fiber tow mixing fluffing spreader after removing the outer shell; Figure 4 yes Figure 3 A cross-sectional schematic diagram of multiple rotating airflow inlet holes uniformly opened in the wire suction tube. DETAILED DESCRIPTION
[0021] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and examples.
[0022] like Figure 1-Figure 4 As shown, the method for filling and laying polylactic acid long fiber bundles in a quilt of the present invention comprises the following steps: (1) Place the filler mold frame horizontally on the long fiber bundle uniform spreading device; The long fiber bundle uniform spreading device comprises a horizontally arranged rectangular fixed frame 1, a support 2 is provided at the bottom of the fixed frame 1, the length direction of the fixed frame 1 is the front-to-back direction, a front-to-back horizontal moving mechanism is provided on the fixed frame 1, a left-to-right horizontal moving mechanism is provided on the front-to-back horizontal moving mechanism, and a long fiber bundle mixed fluffing spreader 3 with a downward outlet is provided on the left-to-right horizontal moving mechanism; (2) The front-to-back horizontal moving mechanism, the left-to-right horizontal moving mechanism and the long-fiber tow mixing and fluffing spreader 3 are started. The front-to-back horizontal moving mechanism and the left-to-right horizontal moving mechanism respectively drive the long-fiber tow mixing and fluffing spreader 3 to reciprocate in the front-to-back and left-to-right directions above the filler mold frame. A plurality of tows of different varieties are mixed and fluffed by the long-fiber tow mixing and fluffing spreader 3 to form a continuous bundle of long-fiber cotton wool that is evenly spread inside the filler mold frame. (3) After the long-fiber cotton filling is laid, the baffles around the filling mold frame are laid flat, and the laid long-fiber cotton filling is moved horizontally to the seam working surface for sewing to complete the bedding production.
[0023] The front-to-back horizontal moving mechanism includes a moving frame 4 and two racks 5 horizontally arranged along the front-to-back direction. The two racks 5 are respectively fixed on the left and right sides of the top of the fixed frame 1. A rotating shaft 6 is rotatably arranged on the front and rear sides of the moving frame 4. The two rotating shafts 6 are horizontally arranged along the left and right directions. A gear 7 is installed at both ends of each rotating shaft 6. The lower part of the gear 7 at the front end of the rotating shaft 6 is meshed with a rack 5 on the front side, and the lower part of the gear 7 at the rear end of the rotating shaft 6 is meshed with a rack 5 on the rear side. The moving frame 4 is provided with a front-to-back moving motor 8 that is transmission-connected to one end of one of the rotating shafts 6. The front and rear ends of the fixed frame 1 are respectively provided with a front limit sensor 9 and a rear limit sensor 10.
[0024] The left and right horizontal moving mechanism includes a left and right moving motor 11, a guide rail 12, a left bearing seat 13 and a right bearing seat 14 arranged on the moving frame 4. The left bearing seat 13 and the right bearing seat 14 are respectively arranged on the left and right sides of the moving frame 4. A lead screw 15 is rotatably arranged between the left bearing seat 13 and the right bearing seat 14. A nut is threadedly connected to the lead screw 15, and the nut is fixedly connected to the bottom of the long fiber tow mixed fluffing spreader 3. The guide rail 12 is parallel to the lead screw 15. A slider 17 sliding along the guide rail 12 is provided at the bottom of the long fiber tow mixed fluffing spreader 3. A left limit sensor 18 and a right limit sensor 19 are respectively provided at the left and right ends of the guide rail 12.
[0025] The long fiber bundle mixing fluffing spreader 3 includes an outer shell 20, in which a wire suction tube 21 is horizontally arranged along the front-to-back direction, the rear end of the wire suction tube 21 is connected to a main conical wire suction port 22, a plurality of rotating air flow inlet holes 23 are evenly arranged on the wire suction tube 21 along the circumferential direction, a compressed air heater connected to the outer ports of the plurality of rotating air flow inlet holes 23 is provided on the wire suction tube 21, an auxiliary wire inlet tube 24 with a high rear end and a low front end is connected to the upper front end of the wire suction tube 21, the rear end of the auxiliary wire inlet tube 24 is connected to an auxiliary conical wire inlet port 25, the front end of the wire suction tube 21 is connected to a mixing fluffing tube 26, the rear end of the mixing fluffing tube 26 is connected to the front end of the wire suction tube 21 through a conical transition tube 27 with a small rear end and a large front end, the front end of the mixing fluffy tube 26 is blocked and connected to a spreading tube 28 with a downward opening.
[0026] The air inlet of the rotating air flow inlet hole 23 is located on the left side of the air outlet, the center line of the rotating air flow inlet hole 23 and the center line of the wire suction tube 21 are arranged alternately, and the angle between the center line of the rotating air flow inlet hole 23 and the center line of the wire suction tube 21 is an acute angle, and the wire suction tube 21 is connected to a first temperature sensor 34 located at the air outlet of the rotating air flow inlet hole 23; the mixing fluffing tube 26 is connected to a second temperature sensor 35.
[0027] The compressed air heater includes a heating cylinder 29 coaxially installed on the outside of the wire suction tube 21, and annular plates 30 connected to the outer circle of the wire suction tube 21 are respectively provided at the front and rear ends of the heating cylinder 29. The inner circle of the heating cylinder 29 and the outer circle of the wire suction tube 21 between the two annular plates 30 form a heating chamber 31. The air inlet of the rotating air flow inlet hole 23 is located on the front side of the heating chamber 31. The rear side of the heating cylinder 29 is connected to a compressed air inlet pipe 32. The outer circle of the heating cylinder 29 is wrapped with an electric heating wire 33, and the outside of the electric heating wire 33 and the outside of the annular plate 30 are wrapped with thermal insulation cotton.
[0028] The specific process of step (2) is as follows: start the forward and backward moving motor 8 and the left and right moving motor 11, the forward and backward moving motor 8 drives a rotating shaft 6 to rotate, and the two gears 7 on the rotating shaft 6 mesh and roll on the rack 5, while driving the two gears 7 on the other rotating shaft 6 to mesh and roll on the rack 5; the left and right moving motor 11 drives the lead screw 15 to rotate, and the nut connected to the lead screw 15 moves left and right along the lead screw 15, and the slider 17 slides along the guide rail 12; at the same time, multiple bundles of long fiber bundles of different varieties pass through The respective tensioners converge into a mixed bundle and enter a pair of main speed meter long wheels 36 (used to measure the length of the long fiber bundle 37 and control the speed of the long fiber bundle 37). The main speed meter long wheels 36 send the long fiber bundle 37 forward to the crimping wheel group 38, and the crimping wheel group 38 curls and deforms the long fiber bundle 37, and then the curled and deformed fiber bundle is separated and broken up by the opening device 39. The separated and broken up long fiber bundle 37 then enters the main conical suction port 22; The deformed tow (such as parallel two-component fiber) enters the auxiliary conical wire inlet 25 after passing through a pair of auxiliary speedometer long wheels 40, and the rotation speed of the auxiliary speedometer long wheel 40 and the main speedometer long wheel 36 are always kept equal; the compressed air enters the heating cylinder 29 through the compressed air inlet pipe 32, and the electric heating wire 33 heats the compressed air inside the heating cylinder 29 after being energized. The heated temperature of the compressed air is monitored in real time by the first temperature sensor 34, and the heated compressed air is sprayed into the wire suction tube 21 through the rotating air flow inlet hole 23, and a spiral airflow is generated in the wire suction tube 21. The spiral airflow pushes the various fiber tows forward and rotates and mixes, and enters the mixing and fluffing tube 26 with a larger space through the conical transition tube 27. Under the action of the high-temperature and high-pressure airflow, the various fiber tows are fully mixed and fluffed, and finally discharged from the lower port of the spreading tube 28. As it moves forward and backward and left and right, the entire mixed and fluffy fiber tow is spread into the filling mold frame to form a long fiber cotton filling with uniform warp and weft arrangement.
[0029] During the reciprocating motion of the front and rear horizontal moving mechanism in the front and rear directions, the front limit sensor 9 and the rear limit sensor 10 respectively monitor the forward and backward movement positions of the moving frame 4. When the front limit sensor 9 detects the moving frame 4, the signal is transmitted to the PLC controller, and the PLC controller instructs the front and rear moving motors 8 to reverse their rotation to move the moving frame 4 backward. Similarly, when the rear limit sensor 10 detects the moving frame 4, the signal is transmitted to the PLC controller, and the PLC controller instructs the front and rear moving motors 8 to reverse their rotation to move the moving frame 4 forward.
[0030] During the reciprocating motion of the left and right horizontal moving mechanism, the left limit sensor 18 and the right limit sensor 19 respectively monitor the positions of the long fiber tow mixed fluffy spreader 3 moving to the left and right. When the left limit sensor 18 detects the long fiber tow mixed fluffy spreader 3, the signal is transmitted to the PLC controller, and the PLC controller instructs the left and right moving motors 11 to reverse rotation, so that the long fiber tow mixed fluffy spreader 3 moves to the right. Similarly, when the right limit sensor 19 detects the long fiber tow mixed fluffy spreader 3, the signal is transmitted to the PLC controller, and the PLC controller instructs the left and right moving motors 11 to reverse rotation, so that the long fiber tow mixed fluffy spreader 3 moves to the left.
[0031] The long-fiber tow mixed fluffy spreader 3 adopts the following moving strategy: it moves back and forth quickly in the left and right directions, and in this process it moves slowly forward or backward for a distance, that is, the front and rear moving motor 8 has a low speed, and the left and right moving motor 11 has a high speed; when the front limit sensor 9 or the rear limit sensor 10 detects that the front and rear horizontal moving mechanism has moved to the limit position, the PLC controller not only instructs the front and rear moving motor 8 to reverse rotation, but also instructs the front and rear moving motor 8 to increase the speed and the left and right moving motor 11 to reduce the speed, that is, it moves quickly forward or backward, and moves slowly to the left or right; then, when the rear limit sensor 10 or the front limit sensor 9 detects that the front and rear horizontal moving mechanism has moved to the limit position, the front and rear moving motor 8 reverses rotation again, the speed of the front and rear moving motor 8 is reduced, and the speed of the left and right moving motor 11 is increased, and the above-mentioned movement measurement is cycled until the long-fiber tows of specified weight or length are evenly spread, the front and rear moving motor 8 and the left and right moving motor 11 are turned off, and multiple tows of different varieties are suspended from being transported to the long-fiber tow mixed fluffy spreader 3.
[0032] The above embodiments illustrate the basic principles and features of the present invention, but the above only illustrates the preferred embodiments of the present invention and is not limited to the embodiments. Under the inspiration of this patent, a person skilled in the art can make many forms of deformation and improvement without departing from the scope of protection of the present invention and the claims, which are all within the protection scope of the present invention. Therefore, the patent and protection scope of the present invention shall be subject to the attached claims.
Claims
1. A method for filling and laying polylactic acid long fiber bundles in a quilt, characterized in that: The following steps are involved: (1) Place the filler mold frame horizontally on the long fiber bundle uniform spreading device; The long fiber bundle uniform spreading device comprises a horizontally arranged rectangular fixed frame, a support is provided at the bottom of the fixed frame, the length direction of the fixed frame is the front-to-back direction, a front-to-back horizontal moving mechanism is provided on the fixed frame, a left-to-right horizontal moving mechanism is provided on the front-to-back horizontal moving mechanism, and a long fiber bundle mixed fluffing spreader with a downward outlet is provided on the left-to-right horizontal moving mechanism; (2) The front-to-back horizontal moving mechanism, the left-to-right horizontal moving mechanism and the long-fiber tow mixing and fluffing spreader are started. The front-to-back horizontal moving mechanism and the left-to-right horizontal moving mechanism respectively drive the long-fiber tow mixing and fluffing spreader to reciprocate in the front-to-back and left-to-right directions above the filler mold frame. Multiple tows of different varieties are mixed and fluffed by the long-fiber tow mixing and fluffing spreader to form a continuous bundle of long-fiber cotton wool that is evenly spread inside the filler mold frame. (3) After the long-fiber cotton filling is laid, the baffles around the filling mold frame are laid flat, and the laid long-fiber cotton filling is moved horizontally to the seam working surface for sewing to complete the bedding production.
2. The method for filling and laying polylactic acid long fiber bundles in a quilt according to claim 1, characterized in that: The front-to-back horizontal moving mechanism includes a moving frame and two racks horizontally arranged along the front-to-back direction, the two racks are respectively fixed on the left and right sides of the top of the fixed frame, and a rotating shaft is rotatably arranged on the front and rear sides of the moving frame respectively, and the two rotating shafts are horizontally arranged along the left and right directions, and a gear is installed at both ends of each rotating shaft, the lower part of the gear at the front end of the rotating shaft is meshed with a rack on the front side, and the lower part of the gear at the rear end of the rotating shaft is meshed with a rack on the rear side, and the moving frame is provided with a front-to-back moving motor that is transmission-connected to one end of one of the rotating shafts, and the front and rear ends of the fixed frame are respectively provided with a front limit sensor and a rear limit sensor.
3. The method for filling and laying polylactic acid long fiber bundles in a quilt according to claim 2, characterized in that: The left and right horizontal moving mechanism includes left and right moving motors, guide rails, left bearing seats and right bearing seats arranged on the moving frame. The left bearing seat and the right bearing seat are respectively arranged on the left and right sides of the moving frame. A lead screw is rotatably arranged between the left bearing seat and the right bearing seat. A nut is threadedly connected to the lead screw. The nut is fixedly connected to the bottom of the long fiber tow mixed fluffing spreader. The guide rail is parallel to the lead screw. A slider sliding along the guide rail is arranged at the bottom of the long fiber tow mixed fluffing spreader. A left limit sensor and a right limit sensor are respectively arranged at the left and right ends of the guide rail.
4. The method for filling and laying polylactic acid long fiber bundles in a quilt according to claim 3, characterized in that: The long fiber bundle mixing fluffing spreader includes an outer shell, in which a wire suction tube is horizontally arranged along the front-to-back direction, the rear end of the wire suction tube is connected to a main conical wire suction port, a plurality of rotating air flow inlet holes are evenly arranged on the wire suction tube along the circumferential direction, a compressed air heater is provided on the wire suction tube and is connected to the outer ports of the plurality of rotating air flow inlet holes, an auxiliary wire inlet tube with a high rear side and a low front side inclined is connected to the upper front end of the wire suction tube, the rear end of the auxiliary wire inlet tube is connected to an auxiliary conical wire inlet port, the front end of the wire suction tube is connected to a mixing fluffing tube, the rear end of the mixing fluffy tube is connected to the front end of the wire suction tube by a conical transition tube with a small rear side and a large front side, and the front end of the mixing fluffy tube is blocked and connected to a spreading tube opening downward.
5. The method for filling and laying polylactic acid long fiber bundles in a quilt according to claim 4, characterized in that: The air inlet of the rotating air flow inlet hole is located on the left side of the air outlet, the center line of the rotating air flow inlet hole and the center line of the wire suction tube are arranged alternately, the angle between the center line of the rotating air flow inlet hole and the center line of the wire suction tube is an acute angle, and the wire suction tube is connected to a first temperature sensor located at the air outlet of the rotating air flow inlet hole; the mixing fluffing tube is connected to a second temperature sensor.
6. The method for filling and laying polylactic acid long fiber bundles in a quilt according to claim 5, characterized in that: The compressed air heater includes a heating cylinder coaxially installed on the outside of the wire suction tube, annular plates connected to the outer circle of the wire suction tube are respectively provided at the front and rear ends of the heating cylinder, the inner circle of the heating cylinder and the outer circle of the wire suction tube between the two annular plates form a heating chamber, the air inlet of the rotating air flow inlet hole is located on the front side of the heating chamber, the rear side of the heating cylinder is connected to a compressed air inlet pipe, the outer circle of the heating cylinder is wrapped with an electric heating wire, and the outside of the electric heating wire and the outside of the annular plate are wrapped with thermal insulation cotton.
7. The method for filling and laying polylactic acid long fiber bundles in a quilt according to claim 6, characterized in that: The specific process of step (2) is as follows: start the forward and backward moving motor and the left and right moving motor, the forward and backward moving motor drives a rotating shaft to rotate, the two gears on the rotating shaft mesh and roll on the rack, and at the same time drives the two gears on the other rotating shaft to mesh and roll on the rack; the left and right moving motor drives the lead screw to rotate, the nut connected to the lead screw moves left and right along the lead screw, and the slider slides along the guide rail; at the same time, multiple bundles of long fiber bundles of different varieties are gathered into a mixed bundle through their respective tensioners, and uniformly enter a pair of main speed meter long wheels (used to measure the length of the long fiber bundles and control the speed of the long fiber bundles), the main speed meter long wheels send the long fiber bundles forward to the curling wheel group, the curling wheel group curls and deforms the long fiber bundles, and then the curled and deformed fiber bundles are separated and scattered by the opening device, and the separated and scattered long fiber bundles then enter the main conical suction port; Highly deformed tows (such as parallel two-component fibers) pass through a pair of auxiliary speedometer long wheels and then enter the auxiliary conical wire inlet. The rotation speed of the auxiliary speedometer long wheel and the main speedometer long wheel are always kept equal; compressed air enters the heating cylinder from the compressed air inlet pipe, and the electric heating wire heats the compressed air inside the heating cylinder after being energized. The heated temperature of the compressed air is monitored in real time by the first temperature sensor, and the heated compressed air is sprayed into the wire suction tube through the rotating air flow inlet hole, generating a spiral airflow in the wire suction tube, which pushes the various fiber tows forward and rotates to mix, and enters the mixing and fluffing tube with a larger space through the conical transition tube. Under the action of high temperature and high pressure airflow, the various curled and deformed fiber tows are fully mixed and fluffed, and finally discharged from the lower port of the spreading tube. As they move forward and backward and left and right, the entire mixed and fluffy fiber tow is spread into the filling mold frame to form a long fiber cotton filling with evenly arranged warp and weft.
8. The method for filling and laying polylactic acid long fiber bundles in a quilt according to claim 7, characterized in that: During the reciprocating motion of the front and rear horizontal moving mechanisms in the front and rear directions, the front limit sensor and the rear limit sensor respectively monitor the forward and backward positions of the moving frame. When the front limit sensor detects the moving frame, the signal is transmitted to the PLC controller, and the PLC controller instructs the front and rear moving motors to reverse and rotate, so that the moving frame moves backward. Similarly, when the rear limit sensor detects the moving frame, the signal is transmitted to the PLC controller, and the PLC controller instructs the front and rear moving motors to reverse and rotate, so that the moving frame moves forward.
9. The method for filling and laying polylactic acid long fiber bundles in a quilt according to claim 8, characterized in that: During the reciprocating motion of the left and right horizontal moving mechanisms, the left limit sensor and the right limit sensor respectively monitor the left and right moving positions of the long fiber tow mixed fluffy spreader. When the left limit sensor detects the long fiber tow mixed fluffy spreader, the signal is transmitted to the PLC controller, and the PLC controller instructs the left and right moving motors to reverse and rotate, so that the long fiber tow mixed fluffy spreader moves to the right. Similarly, when the right limit sensor detects the long fiber tow mixed fluffy spreader, the signal is transmitted to the PLC controller, and the PLC controller instructs the left and right moving motors to reverse and rotate, so that the long fiber tow mixed fluffy spreader moves to the left.
10. The method for filling and laying polylactic acid long fiber bundles in a quilt according to claim 9, characterized in that: The long fiber tow mixed fluffy spreader adopts the following moving strategy: it moves back and forth quickly in the left and right directions, and moves slowly forward or backward for a distance during this process, that is, the front and rear moving motors have low speeds and the left and right moving motors have high speeds; when the front limit sensor or the rear limit sensor detects that the front and rear horizontal moving mechanism has moved to the limit position, the PLC controller not only instructs the front and rear moving motors to reverse rotation, but also instructs the front and rear moving motors to increase speed and the left and right moving motors to decrease speed, that is, it moves quickly forward or backward, and moves slowly to the left or right; then, when the rear limit sensor or the front limit sensor detects that the front and rear horizontal moving mechanism has moved to the limit position, the front and rear moving motors reverse rotation again, the front and rear moving motors decrease speed and the left and right moving motors increase speed, and the above-mentioned movement measurement is repeated until the long fiber tows of specified weight or length are evenly spread, the front and rear moving motors and the left and right moving motors are turned off, and multiple tows of different varieties are suspended from being transported to the long fiber tow mixed fluffy spreader.