An online rotating platform device for polymer extrusion into webs

Abstract

The present invention discloses an online rotating platform device for polymer extrusion web forming, comprising a hopper, a screw extruder, a melt metering pump, a first rotating platform, a first fixed frame, a vertical screw rod, a spinning box, an air drafter, a receiving device, a horizontal screw rod, a second rotating platform and a small fixed frame, wherein the fixed frame is rotatably connected to two first rotating platforms; horizontal screw rods are arranged on the horizontal diagonal lines of the two first rotating platforms. The new device has the beneficial effect of being liftable and rotatable, overcoming the shortcomings of the traditional equipment that the drafting distance, product width and web forming angle cannot be adjusted, and the polymer extrusion web forming can be realized by adjusting the drafting distance within the range of 0 to 2m, thereby improving the product quality, and the web forming angle can be adjusted within the range of 0 to 45° to control the product width, and can be applied to the production of various types of high-quality products.

Description

Technical Field

[0001] The invention relates to the field of online rotating platform equipment, in particular to an online rotating platform equipment used for polymer extrusion into a net. Background Art

[0002] With the research and development of polymer extrusion web forming technology and the gradual maturity of industrial application, spunbond web forming technology and meltblown technology are most widely used in the production of non-woven materials, and their product quality regulation and control have become important issues in the development of equipment. Existing spunbond production equipment uses a screw extruder to heat and melt the polymer and extrude it. The airflow drafter uses the energy of the gas to stretch and cool the filament bundle. The receiving device receives the stretched filament bundle on the conveying mesh curtain to form a web, and then generates non-woven materials through reinforcement methods such as needle punching and hydroentanglement. The meltblown production equipment extrude the polymer melt from the spinneret hole of the die head, uses heated high-speed air to stretch the melt fine flow, and cools the air to cool and crystallize the fiber. The ultrafine fiber is formed into a web on the receiving device, and relies on self-bonding or other reinforcements to form a non-woven material.

[0003] At present, the parameters that can be adjusted online related to the quality and output of spunbond and meltblown equipment are mainly equipment feed speed, drafting air flow speed, mesh curtain speed, etc. The two important parameters of drafting distance and mesh angle have a great influence on product fineness, longitudinal and transverse strength ratio, uniformity and output, but because each device is fixed on a fixed frame, it is difficult to become an online adjustable item, and it is impossible to adjust the lifting and rotation.

[0004] Based on this, we invented an online liftable and rotatable platform device for polymer extrusion web forming by structurally designing the existing platform equipment, so as to achieve online adjustment of the stretching distance and web forming angle. Summary of the invention

[0005] The invention provides an online rotating platform device applied to polymer extrusion web forming, which can solve the problem in the prior art that each device is fixed on a fixed frame and is difficult to be adjusted online, and the lifting and rotating cannot be adjusted.

[0006] The present invention provides an online rotating platform device for polymer extrusion into a web, comprising a hopper, a screw extruder, a melt metering pump, a first rotating platform, a first fixed frame, a vertical screw rod, a spinning box, an air drafter, a receiving device, a horizontal screw rod, a second rotating platform and a small fixed frame, wherein the fixed frame is rotatably connected to two first rotating platforms; horizontal screw rods are arranged on the horizontal diagonal lines of the two first rotating platforms; vertical screw rods are respectively arranged along the length direction of the first fixed frame; the first rotating platform is connected to the screw extruder; a hopper is arranged on the screw extruder; the screw extruder is fixedly connected to the melt metering pump; the melt metering pump is connected to the spinning box; the spinning box is connected to two second rotating platforms; the two second rotating platforms are respectively connected to the air drafter; the air drafter is connected to the receiving device; and the second rotating platform is connected to the small fixed frame.

[0007] Preferably, the rotating platform is provided with a through hole adapted to the airflow stretcher.

[0008] Preferably, the first fixed frame and the lower part of the small fixed frame are respectively connected to four vertical screw rods driven by the first motor.

[0009] Preferably, two horizontal screw rods are arranged on the horizontal diagonal lines of the rotating platform and the second rotating platform.

[0010] Preferably, the melt metering pump is connected to the spinning manifold through a feed pipe.

[0011] Preferably, the eight horizontal screw rods are respectively connected to a second motor.

[0012] Preferably, the receiving device is connected to a negative pressure device; the negative pressure device is an exhaust fan.

[0013] Preferably, the rotation angles of the rotating platform 4 and the second rotating platform 11 are respectively set to +45° and -45°, so that the longitudinal and transverse strength ratio of the final product can reach 1:1.

[0014] The present invention provides an online rotating platform device for polymer extrusion web forming, which has the characteristics of being able to be raised and lowered and rotated, and overcomes the shortcomings of traditional equipment that the stretching distance, product width and web forming angle cannot be adjusted. The polymer extrusion web forming can be achieved by adjusting the stretching distance within the range of 0 to 2 m, thereby improving product quality, and can control the product width by adjusting the web forming angle within the range of 0 to 45 degrees, and can be suitable for the production of a variety of high-quality products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A front view of an online rotating platform device for polymer extrusion into a web provided by the present invention;

[0016] Figure 2 A schematic diagram of the rotation of a second rotating platform 11 of an online rotating platform device for polymer extrusion web forming provided by the present invention;

[0017] Figure 3 A schematic structural diagram of the material falling angle on the upper surface of a receiving device of an online rotating platform device for polymer extrusion web forming provided by the present invention.

[0018] Explanation of the reference numerals: 1- hopper; 2- screw extruder; 3- melt metering pump; 4- first rotating platform; 5- first fixed frame; 6- vertical screw rod; 7- spinning box; 8- air flow stretcher; 9- receiving device; 10- horizontal screw rod; 11- second rotating platform; 12- small fixed frame. DETAILED DESCRIPTION

[0019] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0020] like Figures 1 to 3 As shown, an online rotating platform device for polymer extrusion web forming provided by an embodiment of the present invention comprises a hopper 1, a screw extruder 2, a melt metering pump 3, a first rotating platform 4, a first fixed frame 5, a vertical screw 6, a spinning manifold 7, an air drafter 8, a receiving device 9, a horizontal screw 10, a second rotating platform 11 and a small fixed frame 12; the hopper 1, the screw extruder 2, the melt metering pump 3 and the spinning manifold 7 are connected in sequence through a feed pipe; two horizontal screws 10 are arranged on the horizontal diagonal lines of the rotating platform 4 and the second rotating platform 11

[0021] Four vertical screws 6 are respectively arranged at the four corners of the fixed frame 5 along the length direction. The upper surface of the fixed frame 5 is rotatably connected to two first rotating platforms 4 through a horizontal screw 10; horizontal screws 10 are arranged on the horizontal diagonal lines of the two first rotating platforms 4, and the non-output end of the horizontal screw 10 is fixedly connected to the fixed frame 5 by welding; a screw extruder 2 is fixedly connected to the first rotating platform 4; a hopper 1 is arranged on the screw extruder 2; the screw extruder 2 is connected to a melt metering pump 3 through a feed pipe; the melt metering pump 3 is connected to the spinning box 7 through a feed pipe. The spinning box 7 is fixedly connected to two second rotating platforms 11; the two second rotating platforms 11 are respectively connected to airflow drafters 8; a receiving device 9 is arranged below the airflow drafter 8, and the receiving device 9 is a mesh curtain. The second rotating platform 11 is connected to a small fixed frame 12 through a horizontal screw 10. The non-output end of the horizontal screw rod 10 is fixedly connected to the small fixed frame 12 by welding, and four vertical screw rods 6 are respectively arranged along the length direction at the four corners of the small fixed frame 12. The eight horizontal screw rods 10 are respectively connected to the second motor.

[0022] Four vertical screw rods 6 driven by the first motor are arranged at the lower part of the first fixed frame 5 and the small fixed frame 12. The vertical screw rods 6 can be adjusted so that the first rotating platform 4 and the second rotating platform 11 can be freely raised and lowered within the range of 0 to 2 m, and the distance between the drafting gripping point and the mesh curtain can be regulated, which can not only improve the performance of spunbond products, but also adjust the fineness according to requirements, and provide convenience for replacing raw materials and adjusting equipment parameters, and adjust the distance between the air drafter 8 and the receiving device 9, so as to adjust the strength of the screen and achieve better fineness.

[0023] The rotating platform 11 is provided with a through hole adapted to the airflow drafter 8 , and the airflow drafter 8 passes through the through hole and is fixedly connected to the rotating platform 11 .

[0024] The receiving device 9 is connected to a negative pressure device; the negative pressure device is an exhaust fan, which assists in stretching, facilitates web formation, and forms a fiber mesh structure.

[0025] In this embodiment, Figure 3 As shown, the chemical filaments become stable filaments through the air drafter 8, and the corresponding fiber web area 13 falls on the receiving device 9. The rotation angles of the two rotating platforms 4 and the two second rotating platforms 11 are set to +45° and -45° respectively, so that the longitudinal and transverse strength ratio of the final product can reach 1:1. And the PP / PE two-component fiber web has a higher uniformity because it is stacked with two layers of fiber webs.

[0026] Two horizontal screw rods 10 are arranged on the horizontal diagonal lines of the rotating platform 4 and the second rotating platform 11. The thrust torque brought by the linear motion of the horizontal screw rod 10 enables the two first rotating platforms 4 and the second rotating platform 11 to rotate within 0°~45°. The rotating platforms 11 do not interfere with each other. Under the fixed condition of the machine width of 3200mm, the effective width of the product can be adjusted within the range of 2264mm~3200mm, reducing the waste of raw materials, adjusting the width of the wire mesh, and adjusting the longitudinal and transverse strength ratio of the product, thereby improving the product quality. The product width is controlled by adjusting the meshing angle within the range of 0~45°, which can be suitable for the production of a variety of high-quality products.

[0027] Working principle: First, pour the two groups of raw materials, PP and PE, into the hopper 1, melt the two groups of raw materials through the screw extruder 2 and then extrude them. The melted PP and PE two groups of raw materials enter the spinning box 7 through the melt metering pump 3; then the raw materials pass through the spinning box 7 to become chemical filaments, and then the chemical filaments flow through different flow channels through the melt distribution, and then are ejected from the spinneret holes at the same time to form a bicomponent fiber with a skin-core structure of PP fiber and PE fiber as the skin layer; the chemical filaments pass through the air drafter 8 to become stable filaments and fall onto the receiving device 9; the receiving device 9 is a net curtain with a negative pressure device below (the negative pressure device is generally an exhaust fan, which assists in stretching and facilitates net formation) to form a fiber mesh structure. After the net curtain is formed, it is connected to the subsequent processing device.

[0028] The above disclosure is only a specific embodiment of the present invention, but the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An online rotating platform device for polymer extrusion into a web, characterized in that: The invention comprises a hopper (1), a screw extruder (2), a melt metering pump (3), a first rotating platform (4), a first fixed frame (5), a vertical screw rod (6), a spinning box (7), an air drafter (8), a receiving device (9), a horizontal screw rod (10), a second rotating platform (11) and a small fixed frame (12), wherein the fixed frame (5) is rotatably connected to two first rotating platforms (4); horizontal screw rods (10) are arranged on the horizontal diagonal lines of the two first rotating platforms (4); vertical screw rods (6) are arranged on the first fixed frame (5) along the length direction; the first rotating platform (4) is connected to the screw extruder (2); and a hopper is arranged on the screw extruder (2). (1); the screw extruder (2) is fixedly connected to a melt metering pump (3); the melt metering pump (3) is connected to a spinning manifold (7); the spinning manifold (7) is connected to two second rotating platforms (11); the two second rotating platforms (11) are respectively connected to an air drafter (8); the air drafter (8) is connected to a receiving device (9); the second rotating platform (11) is connected to a small fixed frame (12); the eight horizontal screw rods (10) are respectively connected to a second motor; the receiving device (9) is connected to a negative pressure device; the negative pressure device is an exhaust fan; the rotation angles of the rotating platform (4) and the second rotating platform (11) are respectively set to +45° and -45°.

2. The online rotating platform device for polymer extrusion web forming according to claim 1, characterized in that: The rotating platform (11) is provided with a through hole adapted to the airflow drafter (8).

3. The online rotating platform device for polymer extrusion web forming according to claim 1, characterized in that: The lower parts of the first fixed frame (5) and the small fixed frame (12) are respectively connected to four vertical screw rods (6) driven by a first motor.

4. The online rotating platform device for polymer extrusion web forming according to claim 1, characterized in that: Two horizontal screw rods (10) are arranged on the horizontal diagonal lines of the rotating platform (4) and the second rotating platform (11).

5. The online rotating platform device for polymer extrusion web forming according to claim 1, characterized in that: The melt metering pump (3) is connected to the spinning manifold (7) via a feed pipe.

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