Non-woven fabric for photovoltaic table top paper and production equipment of non-woven fabric

Abstract

The utility model discloses a non-woven fabric for photovoltaic table top paper, and relates to the related technical field of non-woven fabric processing. The fabric comprises a fabric body, the fabric body comprises a non-woven fabric layer, a middle base layer and a bottom wear-resistant layer which are mutually compounded, the non-woven fabric layer is formed by mixing and weaving polyester fibers and low-melting-point adhesive fibers into a net, and the middle base layer is a low-melting-point adhesive fiber layer formed by concave-convex embossing. The utility model further discloses production equipment of the non-woven fabric for the photovoltaic table board paper. Cloth is not prone to deformation in the later period, and equipment machining is easy and convenient.

Description

Technical Field

[0001] The utility model belongs to the relevant technical field of non-woven fabric processing equipment, and particularly relates to a non-woven fabric for photovoltaic table paper and a production equipment thereof. Background Art

[0002] Non-woven fabrics are widely used in the photovoltaic industry. They can help improve the process efficiency of the photovoltaic industry, reduce production costs, and improve product quality and performance, playing a very important role.

[0003] Different from the traditional ingot method for preparing silicon wafers, non-woven fabrics have become one of the first choices for preparing photovoltaic materials. Their main function is to prevent silicon wafers from warping or cracking on the surface. Non-woven fabrics can effectively reduce thermal stress and other mechanical stresses caused by electromagnetic induction during the preparation process, and improve the photovoltaic efficiency of the silicon wafer surface. The most common application is a non-woven fabric for photovoltaic countertop paper.

[0004] However, the structure of the existing non-woven fabric for photovoltaic countertop paper is easy to deform and the layers are easy to separate. In addition, the existing non-woven fabric production equipment, such as the patent number 202223202564.2, has a relatively complex structure, and there is no positioning on both sides when the non-woven fabric is composited, which makes the non-woven fabric composite easy to deviate and affect the integrity of the composite hot pressing. Utility Model Content

[0005] The purpose of the utility model is to provide a non-woven fabric for photovoltaic countertop paper and a production equipment thereof, which solves the problems that the existing non-woven fabric is easy to deform and the layers are easy to separate, and the non-woven fabric production equipment has the problem that the two sides are not positioned when the non-woven fabric is composited, which leads to deviations in the composite and affects the integrity of the composite hot pressing.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a non-woven fabric for photovoltaic countertop paper, comprising a fabric body, wherein the fabric body comprises a non-woven fabric layer, an intermediate base layer and a bottom wear-resistant layer which are composited with each other, the non-woven fabric layer is composed of a mesh woven from a mixture of polyester fibers and low-melting-point adhesive fibers, and the intermediate base layer is a low-melting-point adhesive fiber layer composed of concave-convex embossing.

[0008] Preferably, in order to improve the anti-wrinkle effect, a layer of anti-wrinkle fiber layer is compounded on the upper surface of the non-woven fabric layer.

[0009] Preferably, the thickness of the intermediate base layer is 10 μm-15 μm.

[0010] Preferably, the polyester fiber has a fineness of 0.5 to 1.5D and a length of 3 to 5 mm; the low-melting point adhesive fiber has a fineness of 1.2 to 2D and a length of 3.5 to 5 mm.

[0011] The utility model also discloses a production equipment for preparing the non-woven fabric for photovoltaic countertop paper, comprising a frame, wherein at least one winding mechanism placed at different heights is arranged on the left side of the frame, a winding mechanism is arranged on the right side of the frame, at least one guide roller placed at different heights is arranged in sequence from left to right in the frame, and a heating assembly is arranged between the leftmost guide roller and the winding mechanism, the heating assembly is located on the lower surface of the fabric, an upper crossbeam is arranged above the frame, a first cylinder is fixed below the upper crossbeam, a lower crossbeam is connected to the piston rod of the first cylinder, side baffles are arranged on both sides below the lower crossbeam, a second cylinder fixed to the lower crossbeam is arranged between the two side baffles, a lower pressure head is connected to the piston rod of the second cylinder, a positioning plate is arranged below the lower pressure head, the positioning plate is located directly above the heating assembly, and two positioning rods located on both sides of the positioning plate are also arranged on the lower crossbeam.

[0012] Preferably, in order to realize horizontal movement of the upper clamping part, a linear guide rail is arranged above the frame, a sliding block is slidably connected to the linear guide rail, the upper crossbeam is fixed below the sliding block, and a motor is arranged on the side of the frame, which is connected to the side of the sliding block and drives the sliding block to move on the linear guide rail.

[0013] Preferably, the heating assembly includes a heating base, a heating bracket and a heating guide roller, the heating base is fixed on the frame, the heating bracket is fixed above the heating base, the heating guide roller is rotatably connected between the heating brackets on both sides, and a heating layer is provided on the surface of the heating guide roller, and the heating layer is in close contact with the lower surface of the cloth.

[0014] Preferably, in order to facilitate clamping of products of different widths, two side baffles are arranged opposite to each other, and the side baffles are fixed on an L-shaped bracket, the L-shaped bracket is hinged on an articulated seat, and the articulated seat is fixed on the lower cross beam.

[0015] Preferably, the positioning pressure plate is convenient for disassembly and replacement, a strong magnet is arranged at the bottom of the lower pressure head, and a metal sheet cooperating with the strong magnet is arranged on the positioning pressure plate.

[0016] The utility model has the following beneficial effects:

[0017] 1. The low-melting point adhesive fiber layer is used as the middle layer skeleton, and then the non-woven fabric layer composed of polyester fiber and low-melting point adhesive fiber is mixed and woven into a net, and the middle base layer and the bottom wear-resistant layer are compounded to form the final fabric body to ensure that the whole fabric is not easy to deform. It is also made of high-pressure compounding, and the middle base layer is embossed with concave and convex patterns, so that the layers are not easy to separate after compounding.

[0018] 2. This structural setting realizes the side positioning and top pressing positioning of the fabric to be compounded, ensuring that the fabric will not have positional displacement problems during compounding, ultimately ensuring the integrity of the compound hot pressing, and the overall structure is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the decomposed structure of a non-woven fabric for photovoltaic countertop paper in Example 1;

[0020] Figure 2 This is a schematic diagram on the left side of a production device for a non-woven fabric for photovoltaic countertop paper in Example 1;

[0021] Figure 3 It is a front structural schematic diagram of the guide roller, winding mechanism, rewinding mechanism, and heating assembly in Example 1;

[0022] Figure 4 This is a schematic diagram of the structure of the heating assembly in Example 1;

[0023] Figure 5 for Figure 2 A magnified image of point A;

[0024] Figure 6 This is a schematic diagram of the decomposed structure of a non-woven fabric for photovoltaic countertop paper in Example 2;

[0025] Figure 7 This is a schematic diagram of the structure below the upper crossbeam in Example 3.

[0026] Reference numerals:

[0027] Non-woven fabric layer 1, middle base layer 2, bottom wear-resistant layer 3, wrinkle-resistant fiber layer 4, frame 5, winding mechanism 6, rewinding mechanism 7, guide roller 8, heating component 9, heating base 901, heating bracket 902, heating layer 903, heating guide roller 904, upper crossbeam 10, first cylinder 11, lower crossbeam 12, side baffle 13, second cylinder 14, lower pressure head 15, positioning pressure plate 16, linear guide rail 17, sliding block 18, motor 19, L-shaped bracket 20, hinge seat 21, strong magnet 22, metal sheet 23, positioning rod 24. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example 1

[0030] See also Figure 1 As shown, the present embodiment discloses a non-woven fabric for photovoltaic countertop paper, comprising a fabric body, wherein the fabric body comprises a non-woven fabric layer 1, an intermediate base layer 2 and a bottom wear-resistant layer 3 which are composited with each other, wherein the non-woven fabric layer 1 is formed by weaving a mixed mesh of polyester fiber and low-melting point adhesive fiber, and the intermediate base layer 2 is a low-melting point adhesive fiber layer formed by concave-convex embossing. In the present embodiment, the low-melting point adhesive fiber layer is used as the intermediate layer skeleton, and then the non-woven fabric layer 1 formed by weaving a mixed mesh of polyester fiber and low-melting point adhesive fiber is composited with the intermediate base layer 2 and the bottom wear-resistant layer to form the final fabric body, so as to ensure that the whole fabric is not easy to deform, and is composited with high pressure, and the intermediate base layer 2 is concave-convex embossed so that the layers are not easy to separate after composite.

[0031] Preferably, the intermediate base layer 2 has a thickness of 10 μm-15 μm.

[0032] Preferably, the polyester fiber has a fineness of 0.5 to 1.5D and a length of 3 to 5 mm; the low-melting point adhesive fiber has a fineness of 1.2 to 2D and a length of 3.5 to 5 mm.

[0033] like Figure 2-Figure 5As shown, the utility model also discloses a production device for preparing the photovoltaic table paper non-woven fabric, including a frame 5, on the left side of the frame 5 is arranged one or more winding mechanisms 6 arranged at different heights, on the right side of the frame 5 is arranged a winding mechanism 7, in the frame 5 there are arranged one or more guide rollers 8 arranged at different heights from left to right, and a heating component 9 is arranged between the leftmost guide roller 8 and the winding mechanism 6, the heating component 9 is located on the lower surface of the fabric, an upper crossbeam 10 is arranged above the frame 5, and the heating component 9 is arranged between the leftmost guide roller 8 and the winding mechanism 6. A first cylinder 11 is fixed below the upper crossbeam 10, and a lower crossbeam 12 is connected to the piston rod of the first cylinder 11. Side baffles 13 are arranged on both sides below the lower crossbeam 12, and a second cylinder 14 fixed to the lower crossbeam 12 is arranged between the two side baffles 13. A lower pressure head 15 is connected to the piston rod of the second cylinder 14, and a positioning plate 16 is arranged below the lower pressure head 15. The positioning plate 16 is located directly above the heating assembly 9, and two positioning rods 24 are also arranged on the lower crossbeam 12 and located on both sides of the positioning plate 16.

[0034] Preferably, in order to realize horizontal movement of the upper clamping part, a linear guide 17 is arranged above the frame 5, and a sliding block 18 is slidably connected to the linear guide 17, the upper crossbeam 10 is fixed below the sliding block 18, and a motor 19 connected to the side of the sliding block 18 and driving the sliding block 18 to move on the linear guide 17 is arranged on the side of the frame 5. The above structure drives the motor 19 to rotate, thereby driving the screw in the linear guide 17 connected to the motor 19 to rotate, and finally drives the screw slide that cooperates with the screw to move horizontally along the screw, and the sliding block 18 is fixed on the screw slide, finally realizing the horizontal movement of the sliding block 18. It should be noted that the linear guide 17 comes with a screw and a screw slide, and belongs to the prior art, so it is not described in detail.

[0035] Preferably, the heating assembly 9 includes a heating base 901, a heating bracket 902 and a heating guide roller 904, the heating base 901 is fixed on the frame 5, the heating bracket 902 is fixed above the heating base 901, the heating guide roller 904 is rotatably connected between the heating brackets 902 on both sides, and a heating layer 903 is provided on the surface of the heating guide roller 904, and the heating layer 903 is in close contact with the lower surface of the cloth. This structure realizes the heating operation of the cloth through the heating guide roller 904.

[0036] Preferably, in order to facilitate clamping of products of different widths, two side baffles 13 are arranged opposite to each other, and the side baffles 13 are fixed on an L-shaped bracket 20, and the L-shaped bracket 20 is hinged on a hinge seat 21, and the hinge seat 21 is fixed on the lower cross beam 12. The L-shaped bracket 20 in this structure is elastically hinged on the hinge seat 21 to achieve side positioning and clamping of both sides of the fabric.

[0037] The method of using the present device is as follows: first, a layer of composite glue is coated on the upper and lower surfaces of the prepared intermediate base layer 2. There are three winding mechanisms 6 described in the present embodiment, and then the intermediate base layer 2 is placed on the middle winding mechanism 6, the non-woven fabric layer 1 is placed on the highest winding mechanism 6, and the bottom wear-resistant layer 3 is placed on the lowest winding mechanism 6. The right-side winding mechanism 7 is used for winding, so that the non-woven fabric layer 1, the intermediate base layer 2, and the bottom wear-resistant layer 3 on the left are located on the heating component 9, and then the first cylinder 11 is driven to work, and after the lower crossbeam 12 is driven to move downward, the side baffles 13 on both sides are located on both sides of the three non-woven fabric layers 1, the intermediate base layer 2, and the bottom wear-resistant layer 3 to position the fabric sideways. At the same time, the second cylinder 14 is driven to work to drive The lower pressure head 15 moves downward, and the positioning plate 16 is placed on the upper surface of the top non-woven fabric layer 1 to press the three layers, and the positioning rod 24 is used to press the upper surface of the fabric, and then the heating component 9 below is used to heat the three fabrics, so that after the glue on the upper and lower sides of the middle base layer 2 is heated, the three layers are quickly pressed and compounded under the action of the heating component 9 and the positioning plate 16, and then the winding mechanism 7 is used to wind up the fabric after being guided by the guide rollers 8 on the right. Therefore, this structural setting can realize the side positioning and upper pressing and positioning of the fabric to be compounded, ensuring that the fabric will not have the problem of position deviation during compounding, and finally ensuring the integrity of the composite hot pressing, and the overall structure is simple and easy to operate.

[0038] Example 2

[0039] See also Figure 6 As shown, a non-woven fabric for photovoltaic countertop paper disclosed in this embodiment is preferably used to improve the anti-wrinkle effect. A wrinkle-resistant fiber layer 4 is compounded on the upper surface of the non-woven fabric layer 1. This structure is provided with an anti-wrinkle fiber layer 4 to further improve the anti-wrinkle ability of the overall fabric.

[0040] Example 3

[0041] See also Figure 7 As shown, a non-woven fabric for photovoltaic countertop paper disclosed in this embodiment is preferably convenient for disassembly and replacement, and a positioning pressure plate is provided. A strong magnet 22 is provided at the bottom of the lower pressure head 15, and a metal sheet 23 cooperating with the strong magnet 22 is provided on the positioning pressure plate 16. The above structural arrangement can quickly replace positioning pressure plates 16 of different sizes.

[0042] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A nonwoven fabric for photovoltaic countertop paper, comprising a fabric body, characterized in that: The fabric body comprises a non-woven fabric layer (1), an intermediate base layer (2) and a bottom wear-resistant layer (3) which are composited with each other. The non-woven fabric layer (1) is composed of a mesh woven from a mixture of polyester fibers and low-melting-point adhesive fibers, and the intermediate base layer (2) is a low-melting-point adhesive fiber layer composed of concave-convex embossed fibers.

2. The nonwoven fabric for photovoltaic countertop paper according to claim 1, characterized in that: A wrinkle-resistant fiber layer (4) is compounded on the upper surface of the non-woven fabric layer (1).

3. The nonwoven fabric for photovoltaic countertop paper according to claim 1, characterized in that: The thickness of the intermediate base layer (2) is 10 μm-15 μm.

4. The nonwoven fabric for photovoltaic countertop paper according to claim 1, characterized in that: The polyester fiber has a fineness of 0.5-1.5D and a length of 3-5mm; the low-melting point adhesive fiber has a fineness of 1.2-2D and a length of 3.5-5mm.

5. A production device for preparing a nonwoven fabric for photovoltaic countertop paper according to claim 1, comprising a frame (5), characterized in that: On the left side of the frame (5), one or more winding mechanisms (6) are arranged at different heights, on the right side of the frame (5), a reeling mechanism (7) is arranged, in the frame (5), one or more guide rollers (8) are arranged in sequence from left to right and are arranged at different heights, and a heating component (9) is arranged between the leftmost guide roller (8) and the winding mechanism (6), the heating component (9) being located on the lower surface of the fabric, an upper crossbeam (10) is arranged above the frame (5), and a first air cylinder (11) is fixed below the upper crossbeam (10), the first air cylinder (11) The piston rod of the cylinder (11) is connected to a lower cross beam (12), side baffles (13) are arranged on both sides below the lower cross beam (12), a second cylinder (14) fixed on the lower cross beam (12) is arranged between the two side baffles (13), a lower pressure head (15) is connected to the piston rod of the second cylinder (14), a positioning plate (16) is arranged below the lower pressure head (15), the positioning plate (16) is located directly above the heating component (9), and two positioning rods (24) are also arranged on the lower cross beam (12) and located on both sides of the positioning plate (16).

6. The production equipment for nonwoven fabric for photovoltaic countertop paper according to claim 5, characterized in that: A linear guide rail (17) is arranged above the frame (5), a sliding block (18) is slidably connected to the linear guide rail (17), the upper crossbeam (10) is fixed below the sliding block (18), and a motor (19) is arranged on the side of the frame (5) and is connected to the side of the sliding block (18) and drives the sliding block (18) to move on the linear guide rail (17).

7. The production equipment for nonwoven fabric for photovoltaic countertop paper according to claim 5, characterized in that: The heating assembly (9) comprises a heating base (901), a heating support (902) and a heating guide roller (904); the heating base (901) is fixed on the frame (5); the heating support (902) is fixed above the heating base (901); the heating guide roller (904) is rotatably connected between the heating supports (902) at both sides; a heating layer (903) is provided on the surface of the heating guide roller (904); and the heating layer (903) is in close contact with the lower surface of the cloth.

8. The production equipment for nonwoven fabric for photovoltaic countertop paper according to claim 5, characterized in that: The two side baffles (13) are arranged opposite to each other, and the side baffles (13) are fixed on an L-shaped bracket (20), the L-shaped bracket (20) is hinged on a hinge seat (21), and the hinge seat (21) is fixed on the lower cross beam (12).

9. The production equipment for nonwoven fabric for photovoltaic countertop paper according to claim 5, characterized in that: A strong magnet (22) is arranged at the bottom of the lower pressing head (15), and a metal sheet (23) matching the strong magnet (22) is arranged on the positioning pressing plate (16).

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