Production system of thermoplastic non-woven fiber material

Abstract

The utility model provides a production system of a thermoplastic plastic non-woven fiber material. The production system comprises a collecting device used for placing the fiber material and a spray head device used for generating and spraying plastic filaments, a plurality of air holes are formed in the periphery of the collecting device; and a heater is arranged on the spray head device. According to the production system of the plastic non-woven fiber material, the thermoplastic plastic can be made into fine fiber yarns to be sprayed on the surface of the non-woven fiber felt, so that a layer of material net is formed; in the process of processing a finished product, the micro plastic fibers are quickly melted when encountering heat energy and more easily permeate into the fibrofelt, so that the permeation efficiency of the thermoplastic resin is improved, and the processing efficiency can be remarkably improved; the plastic infiltration capacity and the adhesive force between the fiber layers during finished product processing can be further enhanced, and finally, the mechanical property of the composite material is remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermoplastic plastic non-woven fiber materials, and in particular relates to a production system of thermoplastic plastic non-woven fiber materials. Background Art

[0002] In recent years, composite materials composed of reinforcing fibers and polymers have been widely used in different industries. The more they are used, the more waste is naturally produced, such as production waste or post-consumer waste. Due to the high value of carbon fiber, it is very cost-effective to recycle. Common recycled fibers are mainly short fibers, which can be added to thermoplastics as reinforcing agents, or mixed with thermoplastic fibers and prepared into non-woven fiber mats with plastic substrates. A relatively simple processing method is to use the laminate process to stack plastic sheets and non-woven fiber mats in sequence and bond them together under high temperature and high pressure; however, since the flow of thermoplastics is generally poor, it is difficult to penetrate into the gaps between fibers, which can easily lead to defects such as delamination and holes in the finished composite material. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a production system of thermoplastic non-woven fiber materials.

[0004] In order to achieve the above-mentioned purpose, the production system of thermoplastic plastic non-woven fiber material provided by the utility model includes a collecting device for placing fiber material and a nozzle device for generating and spraying plastic filaments; a plurality of air holes are opened around the collecting device; and a heater is arranged on the nozzle device.

[0005] Furthermore, the collecting device is a cylindrical container.

[0006] Furthermore, a plurality of air holes are evenly arranged in two rows around the collecting device.

[0007] Furthermore, a plurality of small holes are arranged around the nozzle device.

[0008] Furthermore, a plurality of spray holes are evenly arranged on the center line around the nozzle device.

[0009] Furthermore, a temperature sensor is installed on the top of the nozzle device.

[0010] Furthermore, the nozzle device is a hollow cylindrical metal container, inside of which is a cylindrical space for storing plastic filaments.

[0011] Furthermore, the cylindrical metal container has a diameter of 8 cm, a height of 30 cm, and a wall thickness of 2 cm.

[0012] Furthermore, a heater is installed at the bottom of the nozzle device.

[0013] Furthermore, the heater is a circular high-temperature ceramic heating plate or a square high-temperature ceramic heating plate.

[0014] Furthermore, the nozzle device is connected to the rotating shaft.

[0015] Furthermore, the heater is a circular high-temperature ceramic heating plate with a diameter of 6.5 cm and a thickness of 3 mm.

[0016] Furthermore, the heater is a square high-temperature ceramic heating plate with a side length of 5.5 cm and a thickness of 3 mm.

[0017] The utility model has the following beneficial effects:

[0018] The production system of the plastic non-woven fiber material described in the utility model can make thermoplastic plastic into fine fiber filaments and spray them on the surface of non-woven fiber felt, so as to form a material network. In the process of processing finished products, the fine plastic fibers melt faster when encountering heat energy and can more easily penetrate into the fiber felt, thereby improving the penetration efficiency of thermoplastic resin and significantly improving the processing efficiency. The plastic penetration ability and the adhesion between fiber layers during the processing of finished products can be further enhanced, and finally the mechanical properties of the composite material can be significantly improved.

[0019] The production system of plastic non-woven fiber material described in the utility model can select different combinations and weights of thermoplastic plastics and fiber cloth according to the actual application requirements of the product, and can produce composite materials with different material properties; through the high-speed spraying action of the nozzle, uniform and fine plastic fibers are produced, sprayed on the fiber cloth, and a layer of random or specific fine fiber network can be formed in conjunction with the movement of a collection device such as a cylindrical container. This structure not only enhances the interlayer adhesion, but can also directly serve as a plastic substrate or adhesive layer of the fiber composite material.

[0020] The plastic non-woven carbon fiber composite material production system described in the utility model forms a fine thermoplastic fiber mesh on the surface of the carbon fiber felt, thereby enhancing the plastic penetration ability and the adhesion between fiber layers during the processing of the finished product, increasing the interface bonding between the fibers, and ultimately significantly improving the mechanical properties of the composite material.

[0021] The plastic non-woven fiber composite material production system of the utility model can produce plastic fibers of different thicknesses and plastic nets of different thicknesses according to actual needs, thereby improving the flexibility of production.

[0022] The plastic non-woven fiber composite material production system described in the utility model can improve product consistency; by accurately controlling the deposition process of thermoplastic fibers, the consistency and repeatability of products can be improved, which helps to improve product quality and reduce the defective rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a schematic structural diagram of a production system of thermoplastic nonwoven fiber material.

[0024] Figure 2 The utility model is a schematic diagram of the up and down movement of a collecting device in a production system of thermoplastic nonwoven fiber materials.

[0025] Figure 3 It is a schematic diagram of the opening of pores in the production system of the thermoplastic nonwoven fiber material of the utility model.

[0026] Figure 4 The utility model is a schematic diagram of the pore opening-collecting device moving up and down in the production system of the thermoplastic plastic non-woven fiber material.

[0027] Description of reference numerals:

[0028] 1. Collecting device; 2. Nozzle device; 3. Fiber mat; 4. Air hole; 5. Rotating axis; 6. Cylindrical space; 7. Temperature sensor; 8. Injection hole; 9. Plastic wire; 10. Heater; 11. Random fiber grid DETAILED DESCRIPTION

[0029] The utility model provides a production system for thermoplastic non-woven fiber materials. The specific implementation methods are described below with specific embodiments and drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] Reference Figure 1 As shown, the production system of thermoplastic plastic non-woven fiber material described in the utility model includes a collecting device 1 and a nozzle device 2 arranged in the collecting device 1.

[0031] The collecting device 1 is a cylindrical container for placing fiber material 3. The fiber material 3 (fiber cloth or fiber felt) is used as a base material and is fixedly placed on the inner surface of the collecting device 1. These fiber materials 3 will serve as the deposition substrate for the thermoplastic plastic filaments. A plurality of air holes 4 are evenly arranged in two rows around the collecting device 1. The flow rate of each air hole 4 is different. The air flow will interfere with the flow path of the fine plastic filaments and create a random / specific plastic network in coordination with the up and down movement of the collecting device 1.

[0032] The nozzle device 2 is used to generate and spray plastic filaments, and is connected to the rotating shaft 5. The nozzle device 2 is a hollow cylindrical metal container, such as aluminum or stainless steel, with a diameter of 8 cm, a height of 30 cm, and a wall thickness of 2 cm; inside it is a cylindrical space 6 with a diameter of 8 cm and a height of 30 cm, which can be used to store plastic filaments. A heater 10 is installed at the bottom of the nozzle device 2, and the heater 10 can be a circular high-temperature ceramic heating plate or a square high-temperature ceramic heating plate. When the heater 10 is a square high-temperature ceramic heating plate, its side length is 5.5 cm and the thickness is 3 mm; when the heater 10 is a circular high-temperature ceramic heating plate, its diameter is 6.5 cm and the thickness is 3 mm; the heater 10 can heat the plastic and melt the plastic particles. The heating temperature can be adjusted according to different voltages, up to 400 degrees Celsius. A plurality of spray holes 8 are evenly opened on the center line around the nozzle device 2. A temperature sensor 7 is installed on the top of the nozzle device 3. The temperature measurement temperature of the temperature sensor 7 can be as high as 400 degrees Celsius. It can provide real-time temperature feedback to adjust the temperature. Different temperatures are set according to the melting points of different thermoplastics to allow the plastic to reach the best melting state. The rotating shaft 5 can make the entire nozzle device 2 rotate at an adjustable speed. When the nozzle device 2 rotates, the force generated will cause the plastic melt to be ejected through a plurality of injection holes 8 to form millimeter-level plastic filaments 9. Among them, the nozzle rotation speed can reach 1400r / min. These plastic filaments 9 will be ejected into the collecting device 1 and accurately deposited on the fiber material 3 fixed to the inner surface of the collecting device 1.

[0033] Reference Figure 2 As shown, the production system of thermoplastic plastic nonwoven fiber material of the utility model is in the mode of pore closing-collecting device moving up and down. When the pore closing-collecting device 1 moves up and down, the trajectory of the plastic filaments on the fiber material 3 is a plurality of lines similar to sine waves in a single circle. After multiple rotations, the plastic filaments on the fiber material 3 are approximately rectangular.

[0034] Reference Figure 3 As shown, the production system of thermoplastic nonwoven fiber material of the utility model is in the mode of air hole opening-collecting device being stationary. When the air hole opening-collecting device 1 is stationary, most of the air holes 4 are open, and the air flow is used to disturb the injection path of the plastic filaments. Since the air flow size of each air hole 4 is different, the disturbed plastic filaments are injected onto the fiber material 3 to present a random plastic grid 11.

[0035] Reference Figure 4As shown, the production system of thermoplastic nonwoven fiber material of the utility model is in the mode of opening the air holes and moving the collecting device up and down. When the air holes are opened and the collecting device 1 moves up and down, the irregular nature of the plastic filament injection trajectory is enhanced by air flow interference and the movement of the collecting device 1, and a random plastic network 11 is presented on the fiber material 3.

[0036] In some optional embodiments, the fiber material 3 includes but is not limited to one or more fiber materials, such as glass fiber, carbon fiber, plant fiber, etc.

[0037] In some optional embodiments, the thermoplastic plastic includes one or more thermoplastic plastics, such as general plastics such as PP, PC, and engineering plastics such as PA, PC.

[0038] The operation process of the production system of thermoplastic nonwoven fiber material described in the utility model is as follows:

[0039] Placing the fiber material (fiber cloth / fiber felt) on the inner surface of the collecting device 1;

[0040] Thermoplastic plastic is added to the nozzle device 2 and heated for about 80-100 seconds to a temperature of up to 400 degrees Celsius. The plastic will melt due to the heat;

[0041] The collecting device 1 and the nozzle device 2 rotate at a high speed, which is greater than or equal to 1400r / min, and the plastic melt is ejected through the ejection hole 8 on the nozzle device 2 to form fine plastic filaments 9, which are ejected onto the surface of the fiber cloth / felt;

[0042] The collecting device 1 moves up and down at a speed of 0-5 cm / s, allowing the plastic filaments to be sprayed on each part of the fiber material 3.

[0043] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A production system for thermoplastic nonwoven fiber materials, characterized in that: It comprises a collecting device for placing fiber materials and a nozzle device for generating and spraying plastic filaments; a plurality of air holes are provided around the collecting device; and a heater is arranged on the nozzle device.

2. The production system of thermoplastic nonwoven fiber material according to claim 1, characterized in that: The collecting device is a cylindrical container; a plurality of air holes are evenly arranged in two rows above and below around the collecting device.

3. The production system of thermoplastic nonwoven fiber material according to claim 1, characterized in that: A plurality of small holes are arranged around the nozzle device.

4. The production system of thermoplastic nonwoven fiber material according to claim 3, characterized in that: A plurality of spray holes are evenly arranged on the central line around the spray head device.

5. The production system of thermoplastic nonwoven fiber material according to claim 1, characterized in that: A temperature sensor is installed on the top of the nozzle device.

6. The production system of thermoplastic nonwoven fiber material according to claim 1, characterized in that: The nozzle device is a hollow cylindrical metal container, and the inside of the container is a cylindrical space for storing plastic filaments.

7. The production system of thermoplastic nonwoven fiber material according to claim 6, characterized in that: The cylindrical metal container has a diameter of 8 cm, a height of 30 cm and a wall thickness of 2 cm.

8. The production system of thermoplastic nonwoven fiber material according to claim 1, characterized in that: A heater is installed at the bottom of the nozzle device; the heater is a round high-temperature ceramic heating plate or a square high-temperature ceramic heating plate; the nozzle device is connected to the rotating shaft.

9. The production system of thermoplastic nonwoven fiber material according to claim 8, characterized in that: The heater is a round high-temperature ceramic heating plate with a diameter of 6.5 cm and a thickness of 3 mm.

10. The production system of thermoplastic nonwoven fiber material according to claim 8, characterized in that: The heater is a square high-temperature ceramic heating plate with a side length of 5.5 cm and a thickness of 3 mm.

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