Nonwoven fabric spinning device

Abstract

The utility model relates to the melt -blown field, concretely relates to a non -woven fabric spinning device, the lower end fixed mounting of the inner chamber of cover body has the spinneret, and the spinneret is uniformly distributed with a plurality of spinneret orifices, the installation box that is driven to lift by telescopic device is equipped in the cover body, the installation plate that is driven to lift by drive mechanism is equipped in the installation box, the bottom fixed mounting of installation plate has the needle seat that corresponds with the spinneret one, the lower end fixed mounting of needle seat has the lancet for the unblocking of spinneret orifice, and the guide hole that is used for the lancet to wear is equipped on the bottom wall of installation box, when the lancet inserts into the spinneret orifice, the guide hole can provide the guiding effect to the lancet, thereby making the lancet not easy to bend.

Description

Technical Field

[0001] This utility model relates to the field of meltblown fabric, specifically to a nonwoven fabric spinning device. Background Technology

[0002] In the production process of nonwoven fabric, a viscous polymer melt or solution is transformed into a fine stream with a specific cross-sectional shape through a spinneret and then solidified by a coagulation medium such as air or a coagulation bath to form filaments.

[0003] In the prior art, utility model patent application number CN202421164149.9 discloses an anti-clogging chemical fiber spinneret, including a mounting sleeve, a spinneret installed inside the mounting sleeve, a protective cover installed at the upper end of the mounting sleeve, a feed pipe installed on the right side of the mounting sleeve, and an air blowing port opened on the left side of the mounting sleeve. A tamping mechanism is installed on the protective cover to tamp the spinneret holes on the spinneret. The tamping mechanism includes a tamping electric push rod installed at the upper end of the protective cover. The telescopic end of the tamping electric push rod passes through the protective cover and is fixed to a tamping lifting seat. Several tamping columns are distributed and installed at the lower end of the tamping lifting seat. By pushing the residual raw material out of the spinneret holes through the tamping mechanism, clogging can be effectively prevented during subsequent use.

[0004] However, the aforementioned anti-clogging spinneret does not have a structure that provides guidance for the tamping column. Since the diameter of the spinneret hole is small, the diameter of the tamping column is correspondingly thin. When the tamping column is inserted downward into the spinneret hole, it is easy to bend and deform due to the obstruction of the residual material in the spinneret hole, which makes it impossible for the tamping column to be inserted smoothly into the spinneret hole, thus reducing the unblocking effect on the spinneret hole. Utility Model Content

[0005] The purpose of this invention is to provide a nonwoven fabric spinning device in which the needles are less prone to bending, thereby solving the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A nonwoven fabric spinning device includes a support frame, a cover fixedly mounted on the top of the support frame, the cover being a box-shaped opening at the bottom, a spinning plate fixedly mounted on the lower end of the inner cavity of the cover, the spinning plate having a plurality of spinning holes evenly distributed thereon; a mounting box driven to rise and fall by a telescopic device is provided inside the cover, a mounting plate driven to rise and fall by a driving mechanism is provided inside the mounting box, a needle holder corresponding to each of the spinning holes is fixedly mounted on the bottom of the mounting plate, a needle for clearing the spinning holes is fixedly mounted on the lower end of the needle holder, and a guide hole for the needle to pass through is provided on the bottom wall of the mounting box.

[0008] As a further improvement, the inner side of the top wall of the cover is provided with a groove that matches the mounting box, and the mounting box is vertically slidably installed in the groove; the telescopic device is a cylinder with a piston rod extending downward, the cylinder body is fixedly installed on the top of the cover, and the piston rod of the cylinder extends downward into the groove and is fixedly connected to the top of the mounting box.

[0009] As a further improvement, the drive mechanism includes two vertically extending lead screws arranged opposite each other, the lead screws being rotatably mounted in the mounting box, and the opposite ends of the mounting plate being threadedly connected to the two lead screws respectively; a driven bevel gear is fixedly mounted on the lead screw, and the mounting box is also provided with a transmission shaft driven by a motor, the transmission shaft having a driving bevel gear corresponding to the driven bevel gear, the driving bevel gear meshing with the corresponding driven bevel gear.

[0010] As a further improvement, the needle seat is a vertically extending cylinder, the needle extends along the axis of the needle seat, and a support guide corresponding to the needle seat is fixedly installed on the inner side of the bottom wall of the mounting box, and the needle seat is vertically slidably installed in the corresponding support guide.

[0011] As a further improvement, the cross-section of the spinneret orifice is trilobal, and the cross-sectional shape of the needle is consistent with the cross-sectional shape of the spinneret orifice.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. After processing, this application uses a cylinder to extend and move the mounting box close to the top of the spinneret, and drives the mounting plate to descend through a drive mechanism. The needle extends downward through the guide hole and inserts into the spinneret hole. The needle clears the spinneret hole, thereby preventing raw material residue from remaining in the spinneret hole and causing blockage.

[0014] 2. When the needle is inserted downward into the spinneret hole, the lower end of the needle is close to the spinneret hole, and the guide hole can guide the needle during the downward movement of the needle, so that the needle is not easy to bend and the needle can be smoothly inserted into the corresponding spinneret hole, resulting in a better unblocking effect on the spinneret hole. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0017] Figure 2 This is a cross-sectional view of the cover body according to an embodiment of the present utility model;

[0018] Figure 3 This is a bottom view of the spinneret of an embodiment of the present invention;

[0019] Figure 4 This is a cross-sectional schematic diagram of the needle according to an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the needle inserted into the spinneret hole according to an embodiment of the present invention.

[0021] In the diagram: 1-Bracket; 2-Cover; 3-Spinneret; 4-Spinneret orifice; 5-Mounting box; 6-Mounting plate; 7-Needle seat; 8-Needle; 9-Guide hole; 10-Groove; 11-Cylinder; 12-Feed pipe; 13-Hot air pipe; 14-Screw; 15-Support plate; 16-Driven bevel gear; 17-Motor; 18-Drive shaft; 19-Driven bevel gear; 20-Support guide tube. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 5 As shown, a nonwoven fabric spinning device includes a support 1. A cover 2 is bolted to the top of the support 1. The cover 2 is a box-shaped structure with an open bottom. A horizontally arranged spinneret 3 is bolted to the lower end of the inner cavity of the cover 2. The spinneret 3 has multiple evenly distributed spinneret holes 4. Figure 3 As shown, the cross-section of the spinneret 4 is trilobal, which causes the fibers ejected through the spinneret 4 to form a more complex cross-section, improving the moisture absorption and air permeability of the fibers, while also enhancing the mechanical strength of the fibers. In addition, it also expands the contact area between the fibers and the air, accelerates the cooling speed, and reduces energy consumption in the production process.

[0024] like Figure 2 As shown, the housing 2 contains a mounting box 5 that is driven to rise and fall by a telescopic device. Inside the mounting box 5 is a mounting plate 6 that is driven to rise and fall by a drive mechanism. The bottom of the mounting plate 6 is fixed with needle holders 7 corresponding to the spinneret holes 4 one-to-one by bolts. The lower end of the needle holder 7 is embedded with a piercing needle 8 for unblocking the spinneret holes 4. Figure 4 As shown, the cross-sectional shape of the needle 8 is consistent with the cross-sectional shape of the spinneret 4. The needle 8 is located directly above the corresponding spinneret 4 so that the needle 8 can be smoothly inserted downward into the corresponding spinneret 4. The bottom wall of the mounting box 5 is provided with a guide hole 9 for the needle 8 to pass through. In the initial state, the lower end of the needle 8 is located in the corresponding guide hole 9. The needle blocks the corresponding guide hole 9, which can prevent the melt from entering the mounting box 5 through the guide hole 9.

[0025] The inner side of the top wall of the cover 2 is provided with a groove 10 that matches the mounting box 5. The mounting box 5 is vertically slidably installed in the groove 10, which can improve the stability of the mounting box 5 moving up and down. The telescopic device is a cylinder 11 with a piston rod extending downward. The cylinder body of the cylinder 11 is fixedly installed on the top of the cover 2 by bolts, and the piston rod of the cylinder 11 extends downward into the groove 10 and is fixedly connected to the top of the mounting box 5 by bolts.

[0026] In the initial state, such as Figure 2 As shown, the mounting box 5 is recessed upwards into the groove 10. A feed pipe 12 is located on the left side wall of the enclosure 2, and a hot air pipe 13 is located on the right side wall. Both the feed pipe 12 and the hot air pipe 13 are equipped with valves. Opening the valve on the feed pipe 12 and closing the valve on the hot air pipe 13 allows the melt to enter the enclosure 2 through the feed pipe 12 and be ejected downwards through the spinneret hole 4. After processing, closing the valve on the feed pipe 12 and opening the valve on the hot air pipe 13 injects hot air into the enclosure 2 through the hot air pipe 13, blowing out the remaining raw material through the spinneret hole 4. Once the remaining raw material in the enclosure 2 has been discharged, the cylinder 11 extends, causing the lower end of the mounting box 5 to extend out of the groove 10 and approach the top of the spinneret plate 3, thereby reducing the distance between the lower end of the needle 8 and the spinneret hole 4. Then, the drive mechanism drives the mounting plate 6 to descend, as shown... Figure 5 As shown, the mounting plate 6 drives the needle 8 downward through the guide hole 9 via the needle seat 7 and inserts it into the spinneret hole 4. The needle 8 clears the spinneret hole 4. Since the lower end of the needle 8 is close to the spinneret hole 4, and the guide hole 9 can guide the needle 8 during its downward movement, the needle 8 is less likely to bend when it is inserted into the spinneret hole 4. The needle 8 can be smoothly inserted into the corresponding spinneret hole 4, resulting in a better clearing effect on the spinneret hole 4.

[0027] The drive mechanism includes two vertically extending lead screws 14 arranged opposite each other. The lower ends of the lead screws 14 are rotatably mounted on the bottom wall of the mounting box 5 via bearings. Support plates 15 are also fixedly mounted on the inner sides of the left and right side walls of the mounting box 5 via bolts. The lead screws 14 are rotatably connected to the support plates 15 via bearings to improve the support of the lead screws 14. The left and right ends of the mounting plate 6 are threadedly connected to the corresponding lead screws 14. A driven bevel gear 16 is fixedly mounted on the upper end of the lead screw 14. The mounting box 5 also has a transmission shaft 18 driven by a motor 17. The motor 17 is bolted to the inner side of the left side wall of the mounting box 5. The transmission shaft 18 extends laterally. The left end of the transmission shaft 18 is connected to the rotating shaft of the motor 17 via a coupling. The right end of the transmission shaft 18 is rotatably connected to the right side wall of the mounting box 5 via a bearing, thereby improving the rotational stability of the transmission shaft 18. A driving bevel gear 19 corresponding to the driven bevel gear 16 is fixedly mounted on the transmission shaft 18. The driving bevel gear 19 meshes with the corresponding driven bevel gear 16.

[0028] In use, the motor 17 drives the transmission shaft 18 to rotate forward. The transmission shaft 18 drives the two lead screws 14 to rotate synchronously forward through the two active bevel gears 19. In turn, the lead screws 14 drive the mounting plate 6 to move downward. The mounting plate 6 drives the needles 8 to extend downward through the guide hole 9 to clear the spinneret hole 4. Conversely, the motor 17 drives the transmission shaft 18 to rotate in the opposite direction. The transmission shaft 18 drives the two lead screws 14 to rotate synchronously in the reverse direction through the two active bevel gears 19. In turn, the lead screws 14 drive the mounting plate 6 to move upward to return to its original position.

[0029] In this embodiment, the needle seat 7 is a vertically extending cylinder, the needle 8 extends along the axis of the needle seat 7, and the bottom wall of the mounting box 5 is welded with a support conduit 20 corresponding to the needle seat 7. The needle seat 7 is vertically slidably installed in the corresponding support conduit 20, thereby improving the stability of the needle seat 7 moving up and down.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A nonwoven fabric spinning device, characterized in that: The device includes a support frame, a cover fixedly mounted on the top of the support frame, the cover being a box-shaped opening at the bottom, a spinneret plate fixedly mounted at the lower end of the inner cavity of the cover, the spinneret plate having multiple spinneret holes evenly distributed thereon; a mounting box driven to rise and fall by a telescopic device is provided inside the cover, the mounting box containing a mounting plate driven to rise and fall by a drive mechanism, a needle holder corresponding to each spinneret hole fixedly mounted at the bottom of the mounting plate, a needle for clearing the spinneret holes fixedly mounted at the lower end of the needle holder, and a guide hole for the needle to pass through on the bottom wall of the mounting box.

2. The nonwoven fabric spinning device as described in claim 1, characterized in that: The inner side of the top wall of the cover is provided with a groove that matches the mounting box, and the mounting box is vertically slidably installed in the groove; the telescopic device is a cylinder with a piston rod extending downward, the cylinder body is fixedly installed on the top of the cover, and the piston rod of the cylinder extends downward into the groove and is fixedly connected to the top of the mounting box.

3. The nonwoven fabric spinning device as described in claim 1, characterized in that: The drive mechanism includes two vertically extending lead screws arranged opposite each other. The lead screws are rotatably installed in the mounting box. The opposite ends of the mounting plate are threaded to the two lead screws respectively. A driven bevel gear is fixedly installed on the lead screw. The mounting box is also provided with a transmission shaft driven by a motor. A driving bevel gear corresponding to the driven bevel gear is fixedly installed on the transmission shaft. The driving bevel gear meshes with the corresponding driven bevel gear.

4. The nonwoven fabric spinning device as described in claim 1, characterized in that: The needle seat is a vertically extending cylinder, and the needle extends along the axis of the needle seat. The bottom wall of the mounting box is fixedly installed with a support guide corresponding to the needle seat, and the needle seat is vertically slidably installed in the corresponding support guide.

5. The nonwoven fabric spinning device as described in claim 1, characterized in that: The spinneret orifice has a trilobal cross-section, and the cross-sectional shape of the needle is consistent with that of the spinneret orifice.

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