Sandwich type SMC sheet and automatic production line thereof

An automatic production line, sandwich-type technology, applied in the direction of layered products, chemical instruments and methods, synthetic resin layered products, etc., can solve the problems of low degree of automation, low production efficiency, poor fiber transmission effect, etc., to improve mechanical Strength and load-bearing performance, improving production efficiency and product quality, and improving work efficiency

Pending Publication Date: 2022-02-22
亨弗劳恩(江苏)复合材料研发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the reinforcement of the SMC sheet is chopped fiber, the force transmission effect between the fibers is poor, so the parts molded from the SMC material cannot be directly used as load-bearing parts, and can only be used as appearance parts
In addition, the production process of SMC materials is cumbersome, requiring steps such as batching, manual loading, and manual adjustment of machine parameters. The degree of automation is low, consuming a lot of human resources, and the production efficiency is not high.

Method used

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  • Sandwich type SMC sheet and automatic production line thereof
  • Sandwich type SMC sheet and automatic production line thereof
  • Sandwich type SMC sheet and automatic production line thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An automatic production line for sandwich-type SMC sheets, comprising a lower carrying film roller 10, a lower glue groove 20, a first yarn cutter 30, an automatic silk laying device 40, and a second yarn cutter arranged in sequence along the direction of the production line 50. Pressure roller 60, upper bearing film roller 70, sheet weight detection device 80, winding roller 90 and upper glue outlet groove 100, wherein, the upper bearing film roller 70 is located between the pressure roller 60 and the winding roller 90 The upper part is used to convey the upper carrier film 1 to cover the core 3 . In addition, the production line also includes a first program controller 110 , a second program controller 120 and an automatic ingredient feeding device 160 .

[0030] Specifically, the lower carrier film roll 10 winds and transports the lower carrier film 2, and the lower glue outlet tank 20 contains resin paste (epoxy resin paste), and sends the lower carrier film 2 below...

Embodiment 2

[0046] The difference from Embodiment 1 is that, on the production line, an automatic unwinding device 170 is arranged between the first yarn cutter 30 and the second yarn cutter 50 .

[0047] Specifically, the automatic unwinding device 170 includes 3 fabric reels 171, and the 3 fabric reels 171 are respectively connected with a first motor 172, and the continuous long fiber fabric layer is wound on the fabric reels 171, 3 The first motors 172 are respectively connected to the first program controller 110 by signals. The first program controller 110 sends an instruction to at least one first motor 172, so that the corresponding first motor 172 that receives the instruction is unwound, and controls the unwinding speed, so as to achieve the first short fiber layer 4 and the second short fiber layer. 5. Automatically lay 1-3 layers of continuous long-fiber fabric layers to prepare SMC sheets with a sandwich structure.

[0048] The sandwich-type SMC sheet prepared by the above-m...

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Abstract

The invention discloses a sandwich type SMC sheet and an automatic production line thereof. The sheet comprises a core material impregnated with a resin paste material, the core material comprises two short fiber layers and a continuous layer positioned between the two short fiber layers; the automatic production line comprises a first yarn cutting device, a continuous layer laying device, a second yarn cutting device and a winding roller which are sequentially arranged in the direction of the production line. The first yarn cutting device, the continuous layer laying device and the second yarn cutting device are all in signal connection with a first program controller. According to the SMC sheet, the continuous layers are added to serve as transmission units of force between fibers, the continuous layers and the short fiber yarn layers on the upper side and the lower side form a sandwich type structure, and the mechanical strength and the force bearing performance of the whole SMC sheet are effectively improved; by means of the improved design of the production line, the regulation and control over the content of SMC fibers, closed-loop feedback control over the glue content in SMC sheets and real-time monitoring over the weight of the SMC sheets are achieved, and the production efficiency and the product quality are effectively improved.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a sandwich-type SMC sheet and an automatic production line thereof. Background technique [0002] SMC (Sheet molding compound) sheet is a special form of prepreg, which is sheet molding compound after compression molding. SMC sheet refers to the impregnation of chopped fibers (with various lengths of 12.7mm, 25.4mm, 50.8mm, etc.) in thermosetting resin paste coating solution, and then thickened to form a sheet that can be directly operated by hand. During the trial production process, the amount of resin coating and fiber doffing can be controlled to form sheets with uniform weight and different glue and fiber contents. Resin paste is generally composed of resin and various additives. At present, there are two main resin systems for SMC paste: unsaturated polyester system and vinyl system. SMC sheet has all the excellent characteristics of composite materials, and at the same...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/18B29C70/12B29C70/38B29C70/54B32B5/02B32B5/26B32B9/00B32B9/04B32B27/38B32B27/12
CPCB29C70/18B29C70/12B29C70/382B29C70/54B32B5/02B32B5/26B32B27/38B32B27/12
Inventor 顾勇涛代彦彦余文俊马驰邓新全
Owner 亨弗劳恩(江苏)复合材料研发有限公司
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