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Equipment and method for forming isotropic polyurethane composite sleeper in one operation

A composite sleeper, isotropic technology, used in tracks, roads, buildings, etc., can solve the problems of easy cracking, large anisotropy, and complicated production processes, so as to improve the molding effect and solve the problem of excessive anisotropy. Effect

Active Publication Date: 2022-03-22
成都东日瑞姆机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite sleeper produced by this operation method, because the glass fibers are arranged in the direction of elongation, cracks and other defects are prone to occur in the subsequent processing such as drilling, the anisotropy is large, and the production process is complicated and the efficiency is low

Method used

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  • Equipment and method for forming isotropic polyurethane composite sleeper in one operation
  • Equipment and method for forming isotropic polyurethane composite sleeper in one operation
  • Equipment and method for forming isotropic polyurethane composite sleeper in one operation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as Figure 1 to Figure 3 The one-time forming isotropic polyurethane composite sleeper molding equipment shown includes a sleeper mold 1, a glass fiber mat positioning mechanism located in the sleeper mold 1, a pouring mechanism for adding short glass fibers to the sleeper mold 1, and a filling mechanism for the sleeper mold. 1 Polyurethane pouring equipment 2 for injecting polyurethane foaming agent.

Embodiment 2

[0038] Such as Figure 1 to Figure 3 In the isotropic isotropic polyurethane composite sleeper molding equipment shown, on the basis of Example 1, the sleeper mold 1 includes an upper mold and a lower mold, and a sleeper spike embedded part 8 is arranged at the bottom of the upper mold. The pouring mechanism includes a glass fiber conveying mechanism 5 for conveying continuous glass fibers, a glass fiber cutting mechanism 6 for cutting continuous glass fibers into short glass fibers, and a dispersion mechanism 7 for cutting short glass fibers into short glass fibers. The glass fibers are dispersed into the sleeper mold 1 . The sleeper mold 1 comprises a patrix and a lower die; an exhaust valve 9 is arranged at the top of the patrix; a vacuum device 10 is also provided, and the vacuum device 10 is detachably connected with the bottom of the lower die, and the vacuum device 10 is used for The air inside the sleeper mold 1 is extracted. It also includes a rocking mechanism 11, ...

Embodiment 3

[0041] Such as Figure 1 to Figure 6 In the isotropic isotropic polyurethane composite sleeper molding equipment shown, on the basis of any of the above-mentioned embodiments, the glass fiber felt positioning mechanism includes a tensioning guide device 3 and a clamp 4, and the opposite sides of the glass fiber felt pass through The clamp 4 is clamped, and the clamp 4 is detachably connected to the tension guide device 3 . The sleeper mold 1 includes an upper mold and a lower mold; the tension guide device 3 is a guide column fixed in the lower mold; the clamp 4 is provided with a through hole 401 for the guide column to pass through. A boss 402 is provided at the bottom of the clamp 4 ; between two adjacent clamps 4 up and down, the boss 402 of the upper clamp 4 sits on the lower clamp 4 .

[0042] The specific work process of this embodiment is:

[0043] First, paint the inner wall of the sleeper mold 1 in advance; in the sleeper mold 1, the glass fiber mat 12 and the shor...

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Abstract

The invention discloses one-time molding isotropic polyurethane composite sleeper molding equipment, which comprises a sleeper mold, a glass fiber felt positioning mechanism inside the sleeper mold, a pouring mechanism for adding short glass fibers into the sleeper mold, and injecting short glass fibers into the sleeper mold. Polyurethane pouring equipment for polyurethane foaming agent. The object of the present invention is to provide one-time molding isotropic polyurethane composite sleeper molding equipment and methods to solve the problems of relatively large anisotropy of polyurethane composite sleepers in the prior art, complex production process procedures and low efficiency, and to realize the improvement of polyurethane composite sleepers. The isotropic performance of the composite sleeper is aimed at simplifying the production process and improving production efficiency.

Description

technical field [0001] The invention relates to the field of composite sleepers, in particular to equipment and methods for molding isotropic polyurethane composite sleepers at one time. Background technique [0002] Polyurethane composite sleepers have been developed rapidly in the railway field, especially for the laying of high-speed rail sleepers, the effect is obvious. During the molding process of polyurethane composite sleepers, glass fiber materials need to be added to it. The molding process of the polyurethane composite sleeper in the prior art is: wet the continuous glass fiber, pull it into the pultrusion equipment, and after the glass fiber is extruded and solidified in the direction of elongation, the shape is machined, drilled and tapped, painted, extruded . The formed composite sleeper produced by this operation method, because the glass fibers are all arranged in the direction of elongation, cracks and other defects are prone to occur in the subsequent pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/36B29C70/54E01B3/44E01B3/46
CPCB29C70/34B29C70/541B29C70/545E01B3/44E01B3/46
Inventor 鲁玉凡谭正亮鲁云飞邓理坤孙永琦黄鑫
Owner 成都东日瑞姆机械有限公司
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