Flame-retardant polypropylene blended spinning equipment

Abstract

The utility model provides flame-retardant polypropylene blended spinning equipment, which relates to the technical field of spinning equipment and comprises a box body, a winding frame is fixed on the inner bottom wall of the box body, a spinning mechanism is mounted on the top wall of the box body, and the spinning mechanism comprises a translation lead screw, a spinning support, a needle frame component and a spinning needle head. The lower end of the spinning support is rotationally connected with a spline shaft, adjusting gears are fixed to the two ends of the spline shaft, the front side of the spinning support is slidably connected with an adjusting sliding block, the adjusting sliding block faces the adjusting gears, and a driving device is installed on the spinning support and connected to the adjusting sliding block. The orientation of the spinning needle head can be adjusted through the driving device so as to be matched with spinning liquid drops at different jet flow speeds, and the spinning liquid drops can just fall onto the winding frame to complete spinning winding.

Description

Technical Field

[0001] The utility model relates to the technical field of spinning equipment, in particular to a flame-retardant polypropylene blend spinning equipment. Background Art

[0002] Electrospinning is a process that uses a polymer solution or melt to form a jet stream under the influence of a strong electric field. During the electrospinning process, the jet is filled with a charged polymer solution or melt. Under the influence of an applied electric field, the polymer droplets are held at the nozzle by surface tension. Under the influence of the electric field, the surface charge accumulates under the influence of the electric field, and is subjected to an electric force in the opposite direction of the surface tension.

[0003] Significant progress has been made in nanofiber production capacity by enhancing electrospinning through the introduction of external airflow. Airflow assistance not only improves electrospinning efficiency, but also improves fiber orientation, packing density and even morphology. However, in the airflow-assisted spinning process, under the action of different airflow velocities, the spinning polymer droplets have different landing points under the influence of initial velocity. The positions of the nozzle and winding frame in the electrospinning machines currently on the market are fixed, and the polymer droplets will fall to the front of the winding frame in advance or pass over the winding frame. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a flame-retardant polypropylene blend spinning device, which solves the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A flame-retardant polypropylene blend spinning device comprises a box body, a liquid supply device and an air pump, the air pump is connected to an air flow pipe, a winding frame is fixed to the inner bottom wall of the box body, a winding roller is installed on the winding frame, one end of the winding roller is connected to a winding motor, a spinning mechanism is installed on the top wall of the box body, the spinning mechanism comprises a translation screw, a spinning support, a needle rack assembly and a spinning needle, the rear end of the spinning needle head is connected to the liquid supply device, the middle part of the spinning needle head is connected to the air flow pipe, the lower end of the spinning support is rotatably connected to a spline shaft, both ends of the spline shaft are fixed with adjusting gears, the front side of the spinning support is slidingly connected to an adjusting slider, the side of the adjusting slider facing the adjusting gear is provided with an adjusting rack meshing with the adjusting gear, a driving device is installed on the spinning support, and the driving device is connected to the adjusting slider.

[0009] Preferably, the translation screw is horizontally arranged and rotatably connected to the top of the box body, one end of the translation screw is connected to a translation motor, a translation block is fixed on the top of the spinning bracket, the translation block is threadedly engaged with the translation screw, and a guide slide rod parallel to the translation screw is provided on the top of the box body, and the translation block sliding sleeve is provided on the guide slide rod.

[0010] Preferably, the driving device is a lifting cylinder, and the cylinder arm of the lifting cylinder is fixed on the top of the adjusting slider.

[0011] Preferably, the driving device includes a driving cylinder, a sliding disc, a connecting rod, an adjusting screw and a supporting spring. The driving cylinder is configured as a cylinder with an opening at the lower end. The sliding disc is slidably installed in the driving cylinder. An air pressure space is formed between the sliding disc and the top of the driving cylinder. The connecting rod is fixed on the lower side of the sliding disc. The connecting rod is downwardly connected to the top of the adjusting slider. The adjusting screw is threadedly connected to the lower side of the driving cylinder. The supporting spring is connected between the adjusting screw and the sliding disc. A connecting tee is provided in the middle of the airflow tube. One end of the connecting tee is connected to the air pressure space, and the other end is connected to the middle of the spinning needle.

[0012] Preferably, a guide hole is provided in the middle of the adjusting screw, and the connecting rod slides through the guide hole.

[0013] Preferably, the needle frame assembly includes an adjusting beam and a needle adjusting plate frame, one end of the adjusting beam is fitted on the spline shaft, and the other end extends toward the winding frame, the needle adjusting plate frame is fixed on the adjusting beam, and a mounting hole is provided at the front end of the needle adjusting plate frame, and the spinning needle head is inserted into the mounting hole.

[0014] Preferably, the needle adjustment plate frame includes an integrally formed mounting plate, a connecting beam and a fan-shaped plate, the mounting hole is provided on the mounting plate, a connecting pin is provided in the middle of the connecting beam, the connecting pin is rotatably connected to the adjustment beam, an arc-shaped slot hole is provided on the fan-shaped plate, a positioning bolt is passed through the arc-shaped slot hole, and the positioning bolt is fixedly passed through the adjustment beam.

[0015] Preferably, a plurality of through holes are evenly distributed on the connecting beam, the connecting pins are connected in the through holes, and the positioning bolts are connected in adjacent through holes.

[0016] (3) Beneficial effects

[0017] The utility model provides a flame-retardant polypropylene blend spinning device, which has the following beneficial effects:

[0018] 1. In the utility model, the air pressure connected to the spinning needle is changed by an air pump, thereby changing the initial velocity of the spinning droplets, thereby changing the orientation and stacking density of the fibers. At the same time, the adjusting slider is moved up and down by a driving device, thereby changing the extension angle of the adjusting beam and adjusting the direction of the spinning needle so that the spinning droplets just drip onto the winding roller for spinning and winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a flame-retardant polypropylene blend spinning device of the present invention;

[0020] Figure 2 This is a schematic structural diagram of the spinning mechanism in the present invention;

[0021] Figure 3 This is an exploded view of the spinning mechanism in the present invention;

[0022] Figure 4 This is a schematic structural diagram of the driving device in Example 2 of the present utility model.

[0023] In the figure: 1. Box body; 2. Winding frame; 3. Translation screw; 4. Spinning bracket; 41. Translation block; 42. Vertical beam; 5. Needle holder assembly; 51. Adjustment beam; 52. Mounting plate; 53. Connecting beam; 54. Fan plate; 6. Spinning needle; 7. Translation motor; 8. Guide slide; 9. Spline shaft; 10. Adjustment gear; 11. Adjustment slider; 12. Adjustment rack; 13. Lifting cylinder; 14. Positioning bolt; 15. Drive cylinder; 16. Sliding disc; 17. Connecting rod; 18. Adjustment screw; 19. Support spring; 20. Concave ring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] Example 1:

[0026] like Figure 1 As shown, a flame-retardant polypropylene blend spinning equipment includes a box body 1, a liquid supply device and an air pump, the air pump is connected to an air flow pipe, the liquid supply device is connected to a liquid supply pipe, a winding frame 2 is fixed to the inner bottom wall of the box body 1, a winding roller is installed on the winding frame 2, and one end of the winding roller is connected to a winding motor.

[0027] like Figure 2 、 3As shown, a spinning mechanism is installed on the top wall of the box 1, and the spinning mechanism includes a translation screw 3, a spinning support 4, a needle holder assembly 5 and a spinning needle 6. The rear end of the spinning needle 6 is connected to the liquid supply pipe, and the middle part of the spinning needle 6 is connected to the air flow pipe. The spinning solution in the liquid supply pipe passes through the inside of the spinning needle 6, and the high-pressure airflow in the air flow pipe is connected to the outside of the spinning needle 6. The spinning solution is accelerated by the high-speed airflow to form a spinning droplet jet.

[0028] The top of the box body 1 is fixed with two translation plates on both sides, the translation screw 3 is rotated to connect the two translation plates, one end of the translation screw 3 is connected to the translation motor 7, and a guide slide 8 parallel to the translation screw 3 is fixed between the translation plates, and the guide slide 8 is arranged on the left and right sides of the translation screw 3. A translation block 41 is fixed on the top of the spinning bracket 4, and a threaded hole is opened in the middle of the translation block 41. Translation holes are arranged on both sides of the threaded hole. The threaded holes are threadedly connected to the translation screw 3, and the translation hole sliding sleeve is arranged on the guide slide 8. The rotation of the translation motor 7 can allow the translation block 41 to slide left and right through the translation screw 3, so that the spinning droplets ejected from the spinning needle 6 are evenly sprayed on the winding roller to form a spinning with uniform thickness.

[0029] The lower end of the spinning support 4 includes two vertical beams 42 fixed in parallel on the translation block 41, and an installation gap is set between the two vertical beams 42. The lower end of the spinning support 4 is rotatably connected to the spline shaft 9. Adjustment gears 10 are fixed at both ends of the spline shaft 9. The spline shaft 9 is set in the installation gap. The needle frame assembly 5 is fixed on the spline shaft 9. The adjustment gear 10 is set on the outside of the two vertical beams 42. The front side of the spinning support 4 is slidably connected to the adjustment slider 11. The middle part of the adjustment slider 11 is slidably placed between the installation gaps, and the front end of the adjustment slider 11 extends to both sides. The adjusting slider 11 is provided with an adjusting rack 12 meshing with the adjusting gear 10 on the side facing the adjusting gear 10. A driving device is installed on the spinning bracket 4. The driving device is a lifting cylinder 13. The cylinder arm of the lifting cylinder 13 is fixed on the top of the adjusting slider 11. The lifting cylinder 13 can drive the adjusting slider 11 to slide up and down by retracting. The adjusting gear 10 is rotated by adjusting the rack 12, thereby rotating the needle holder assembly 5 connected to the spline shaft 9, thereby adjusting the direction of the spinning needle 6 on the needle holder assembly 5, so that the high-speed jet ejected from the spinning needle 6 can just drip onto the winding roller for spinning and winding.

[0030] The needle frame assembly 5 includes an adjusting beam 51 and a needle plate frame. One end of the adjusting beam 51 is sleeved on the spline shaft 9 with a concave-convex fit. A number of through-holes are evenly distributed on the connecting beam 53. The needle plate frame is fixed on the adjusting beam 51. A mounting hole is provided at the front end of the needle plate frame. The spinning needle head 6 is passed through the mounting hole. The needle plate frame includes an integrally formed mounting plate 52, a connecting beam 53 and a fan-shaped plate 54. The mounting hole is provided on the mounting plate 52. A connecting pin is provided in the middle of the connecting beam 53. The connecting pin is rotated and connected Connected to the penetration hole, the fan-shaped plate 54 is provided with an arc-shaped slot hole, and the arc-shaped slot hole is penetrated by a positioning bolt 14. The positioning bolt 14 is fixedly penetrated on the adjusting beam 51, and is penetrated in different penetration holes through the connecting pin. The initial distance between the spinning needle head 6 and the winding roller can be adjusted. At the same time, the positioning bolt 14 can unlock and lock the fan-shaped plate 54 and the connecting beam 53. In the unlocked state, the initial angle of the needle plate frame and the adjusting beam 51 can be adjusted so that the spinning needle head 6 can be at the optimal angle for spinning and winding.

[0031] Example 2:

[0032] like Figure 4As shown, the driving device includes a driving cylinder 15, a sliding disc 16, a connecting rod 17, an adjusting screw 18 and a support spring 19. The driving cylinder 15 is configured as a cylinder with an opening at the lower end. The driving cylinder 15 is fixed on the needle holder assembly 5. The sliding disc 16 is slidably installed in the driving cylinder 15. An air pressure space is formed between the sliding disc 16 and the top of the driving cylinder 15. The connecting rod 17 is fixed to the lower side of the sliding disc 16. The connecting rod 17 is downwardly connected to the top of the adjusting slider 11. A connecting tee is provided in the middle of the air flow tube. One end of the connecting tee is connected to the air pressure space, and the other end is connected to the middle of the spinning needle 6. An inner concave ring 20 is provided in the middle of the driving cylinder 15. An internal thread is provided on the lower side of the driving cylinder 15. The adjusting screw 18 is threadedly connected to the lower side of the driving cylinder 15. A rotating knob is provided on the lower side of the adjusting screw 18. The support spring 19 connects The adjusting screw 18 is provided with a guide hole in the middle of the adjusting screw 18 between the adjusting screw 18 and the sliding disc 16, and the connecting rod 17 slides through the guide hole, and the air pressure space is connected to the air flow tube. The adjusting rotary knob can adjust the pressure of the supporting spring 19 on the sliding disc 16, thereby changing the sliding distance of the sliding disc 16 caused by the air pressure change, thereby changing the speed of the angle change of the adjusting beam 51 caused by the air pressure change, so that the pressure change in the air pressure space is consistent with the air flow connected to the spinning needle head 6. When the air pressure in the spinning needle head 6 increases, the initial velocity of the spinning droplets increases. Through the change in air pressure, the sliding disc 16 can be resisted to slide downward on the driving cylinder 15, thereby making the adjusting beam 51 rotate downward through the meshing adjusting gear 10 and the adjusting rack 12, so that the spinning needle head 6 rotates downward, thereby cooperating with the change in the initial velocity of the spinning droplets, so that the spinning droplets can just fall onto the winding roller to complete the spinning and winding.

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

Claims

1. A flame-retardant polypropylene blend spinning device, comprising a box, a liquid supply device and an air pump, wherein the air pump is connected to an air flow pipe, characterized in that: A winding rack is fixed to the inner bottom wall of the box, a winding roller is installed on the winding rack, one end of the winding roller is connected to the winding motor, a spinning mechanism is installed on the top wall of the box, the spinning mechanism includes a translation screw, a spinning support, a needle rack assembly and a spinning needle, the rear end of the spinning needle is connected to the liquid supply device, the middle part of the spinning needle is connected to the air flow tube, the lower end of the spinning support is rotatably connected to the spline shaft, and the two ends of the spline shaft are fixed with adjusting gears, the front side of the spinning support is slidingly connected to the adjusting slider, and the side of the adjusting slider facing the adjusting gear is provided with an adjusting rack meshing with the adjusting gear, and a driving device is installed on the spinning support, and the driving device is connected to the adjusting slider.

2. The flame-retardant polypropylene blend spinning equipment according to claim 1, characterized in that: The translation screw is horizontally arranged and rotatably connected to the top of the box body, one end of the translation screw is connected to a translation motor, a translation block is fixed on the top of the spinning bracket, the translation block is threadedly engaged with the translation screw, and a guide slide rod parallel to the translation screw is provided on the top of the box body, and the translation block sliding sleeve is provided on the guide slide rod.

3. The flame-retardant polypropylene blend spinning equipment according to claim 2, characterized in that: The driving device is a lifting cylinder, and the cylinder arm of the lifting cylinder is fixed on the top of the adjusting slide block.

4. The flame-retardant polypropylene blend spinning equipment according to claim 2, characterized in that: The driving device includes a driving cylinder, a sliding disc, a connecting rod, an adjusting screw and a supporting spring. The driving cylinder is configured as a cylinder with an opening at the lower end. The sliding disc is slidably installed in the driving cylinder. An air pressure space is formed between the sliding disc and the top of the driving cylinder. The connecting rod is fixed to the lower side of the sliding disc. The connecting rod is downwardly connected to the top of the adjusting slider. The adjusting screw is threadedly connected to the lower side of the driving cylinder. The supporting spring is connected between the adjusting screw and the sliding disc. A connecting tee is provided in the middle of the airflow tube. One end of the connecting tee is connected to the air pressure space, and the other end is connected to the middle of the spinning needle head.

5. The flame-retardant polypropylene blend spinning equipment according to claim 4, characterized in that: A guide hole is provided in the middle of the adjusting screw piece, and the connecting rod slides through the guide hole.

6. The flame-retardant polypropylene blend spinning equipment according to claim 1, characterized in that: The needle frame assembly includes an adjusting beam and a needle adjusting plate frame. One end of the adjusting beam is fitted on the spline shaft, and the other end extends toward the winding frame. The needle adjusting plate frame is fixed on the adjusting beam. A mounting hole is provided at the front end of the needle adjusting plate frame, and the spinning needle head is inserted into the mounting hole.

7. The flame-retardant polypropylene blend spinning equipment according to claim 6, characterized in that: The needle adjustment plate frame includes an integrally formed mounting plate, a connecting beam and a fan-shaped plate. The mounting hole is provided on the mounting plate. A connecting pin is provided in the middle of the connecting beam. The connecting pin is rotatably connected to the adjustment beam. An arc-shaped slot hole is provided on the fan-shaped plate. A positioning bolt is passed through the arc-shaped slot hole. The positioning bolt is fixedly passed through the adjustment beam.

8. The flame-retardant polypropylene blend spinning equipment according to claim 7, characterized in that: A plurality of through holes are evenly distributed on the connecting beam, the connecting pins are connected in the through holes, and the positioning bolts are connected in adjacent through holes.

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