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A kind of thermal bending forming method and forming device of plexiglass

A technology of plexiglass and a molding method, which is applied in the field of hot bending molding method and molding device of plexiglass, can solve the problems of poor surface quality, high cost, and heavy processing work of plexiglass, and achieves good surface quality, high yield, The effect of fast bending speed

Active Publication Date: 2021-04-30
TRULY OPTO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above method has the following defects: (1) Since the surface of the curved mold is in contact with the plexiglass, the surface quality of the plexiglass after molding is poor, and everything on the curved mold will be projected on the surface of the plexiglass, and the follow-up processing is heavy; (2) Heating is used. Furnaces and fine bending molds for hot bending, very costly

Method used

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  • A kind of thermal bending forming method and forming device of plexiglass

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Embodiment 1

[0024] A kind of thermal bending forming method of plexiglass, comprises the steps:

[0025] S1. Provide a flat plexiglass;

[0026] S2. Move the plexiglass to a preset distance below the infrared heating tube, and heat and soften the plexiglass;

[0027] S3. Place the heated and softened plexiglass in a bending fixture for molding to obtain 3D plexiglass; wherein, the bending fixture includes a plate-shaped fixture body, and the upper surface of the fixture body is provided with several grooves, and protrusions are provided between two adjacent grooves; the two ends of the heat-softened organic glass are respectively embedded in the grooves.

[0028] The bending fixture of the present invention has a simple structure, and the two ends of the heated and softened organic glass are respectively embedded in the grooves of the bending fixture, so that the organic glass can be bent. Only the two ends of the plexiglass are in contact with the bending fixture, the surface quality o...

Embodiment 2

[0041] refer to figure 1 , a thermal bending forming device for plexiglass, comprising:

[0042] an infrared heating tube for generating the high temperature required to soften the plexiglass;

[0043] The bending fixture is arranged under the infrared heating tube, and the bending fixture is used to fix the softened plexiglass to form it into 3D plexiglass; the bending fixture includes a plate-shaped fixture The body, the upper surface of the fixture body is provided with several grooves distributed in an array, and a protrusion is arranged between two adjacent grooves.

[0044] Wherein, the surface of the plexiglass is provided with a functional layer, and the functional layer includes one or more of a hardened layer, an anti-glare layer, an anti-reflection and anti-reflection film, and an anti-fingerprint layer.

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Abstract

The invention discloses a thermal bending forming method and device of plexiglass, comprising the following steps: S1. providing a flat plexiglass; S2. moving the plexiglass to the bottom of an infrared heating tube, and heating and softening the plexiglass; S3. Place heated and softened plexiglass in a bending fixture for molding to obtain 3D plexiglass; wherein, the bending fixture includes a plate-shaped fixture body, and the upper surface of the fixture body is provided with several grooves distributed in an array , and a protrusion is provided between two adjacent grooves; the two ends of the heated and softened organic glass are respectively embedded in the grooves. The invention adopts an infrared heating tube to heat and soften the plexiglass, and at the same time, places the heated and softened plexiglass in a specific bending fixture for molding to form 3D plexiglass. After forming, the surface quality of the plexiglass is good and the yield rate is high, and there is no need to control the force when bending, and the bending speed is fast and the efficiency is high.

Description

technical field [0001] The invention relates to the technical field of hot-bending organic glass products, in particular to a hot-bending molding method and a molding device for organic glass. Background technique [0002] Methyl methacrylate, commonly known as plexiglass, has excellent light transmittance, can pass through more than 92% of sunlight, and has high mechanical strength, excellent heat and cold resistance, corrosion resistance, and good insulation performance. Dimensionally stable, easy to form, widely used in automotive lights, instrument parts, optical lenses, decorative gifts, advertising light boxes and other fields. Plexiglass glass itself is softer than inorganic glass, and the same thickness can be folded at an increased angle. Therefore, the 3D plexiglass after hot bending can meet greater R angle tolerance or crown height tolerance. [0003] In the past, the method of bending flat plexiglass is: cutting flat plexiglass into a predetermined size and sha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C53/04B29C53/80B29C53/84
CPCB29C53/04B29C53/80B29C53/84
Inventor 汪会婷李素云时庆文周伟杰
Owner TRULY OPTO ELECTRONICS