Continuous production method and equipment for composite type sleeper

A production method and composite technology, applied in the field of sleepers, can solve the problems of heavy workload, sleeper failure, and long production cycle, and achieve the effects of simplifying the manufacturing process, increasing the maximum load, and improving production efficiency

Inactive Publication Date: 2012-09-19
BEIJING PANTIAN NEW TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The first technical problem to be solved by the present invention is that the polyurethane resin synthetic sleeper manufacturing process in the prior art adopts a single longitudinal arrangement of glass fibers to guide the yarn, and there is no shear reinforcement in the transverse position, and the manufactured sleeper is under stress. When bending occurs, it is easy to cause the failure of the interlayer shear force, and even the defect of the overall failure of the sleeper, and then provide a production method for the composite sleeper;
[0011] The second problem to be solved by the present invention is that the polyurethane resin sprayed on the glass fiber multi-axial cloth in the prior art is unevenly distributed, and it cannot saturate the glass fiber multi-axial cloth well, so after the foaming is completed, the polyurethane The resin is unevenly distributed in the polyurethane resin reinforced fiber multiaxial cloth layer, thereby affecting the strength defect of the polyurethane resin reinforced fiber multiaxial cloth layer, thereby providing a production method of a composite sleeper;
[0012] The third technical problem to be solved by the present invention is that the production cycle of the composite sleeper in the prior art is long, the workload is large, the production efficiency is low, the continuous and automatic production of the sleeper cannot be realized, and the stability of the sleeper product is relatively low. poor defects, and then provide a production method for composite sleepers

Method used

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  • Continuous production method and equipment for composite type sleeper
  • Continuous production method and equipment for composite type sleeper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Production equipment

[0052] Such as figure 1 As shown, the continuous production equipment is provided with a first rotating device 1 , a spreading mechanism 3 , a sprayer 4 , a pair of rollers 5 , and a second rotating device 6 in sequence. A rolled glass fiber multiaxial cloth 2 is placed on the first rotating device 1 , and when the rolled glass fiber multiaxial cloth 2 is driven to rotate by the first rotating device 1 , the glass fiber multiaxial cloth is unfolded. When the glass fiber multiaxial cloth passes through the stretching mechanism 3, the glass fiber multiaxial cloth can be smoothly unfolded and the wrinkles are removed. In order to better unfold and remove the glass fiber multiaxial cloth wrinkles, it can be set Two stretching mechanisms 3. The sprayer 4 is located between the stretching mechanism 3 and the pair of rollers 5 and above the glass fiber multi-axial cloth. Two reservoirs are arranged on the upper end of the sprinkler 4, and the two ...

Embodiment 2

[0059] (1) Production equipment

[0060] The same production equipment as in (1) in Example 1 is adopted, the difference is that: the stretching mechanism 3 is set as one, the counter roller 5 is set as a group, and a reservoir is set at the upper end of the sprinkler 4, and the sprinkler 4 passes through the pipeline Connected to the reservoir, there is no static mixer in the sprinkler 4 either.

[0061] (2) Continuous production method

[0062] The rolled glass fiber twill 2 is placed on the first rotating device 1, and the first rotating device 1 drives the rolled glass fiber twill 2 to rotate to unfold it, and then the glass fiber twill passes through the stretching mechanism 3, and the stretching mechanism 3 Flatten the fiberglass twill to remove wrinkles.

[0063] The stock solution of the uniformly mixed polyurethane resin is stored in the reservoir, which can be directly input into the sprinkler 4, and then evenly sprayed on the surface of the polyurethane resin belo...

Embodiment 3

[0067] (1) Production equipment

[0068] The same production equipment as in (1) in Example 1 was adopted, with the difference that: two stretching mechanisms 3 were set, and six pairs of rollers 5 were set.

[0069] (2) Continuous production method

[0070] The rolled glass fiber grid cloth 2 is placed on the first rotating device 1, and the first rotating device 1 drives the rolled glass fiber grid cloth 2 to rotate to unfold it, and then the glass fiber grid cloth passes through the stretching mechanism 3, The stretching mechanism 3 flatly spreads the glass fiber grid cloth and removes wrinkles.

[0071] The two storages arranged at the upper end of the sprinkler 4, the raw materials stored in one of the storages are polyols, blowing agents, catalysts, flame retardants and anti-aging agents, and the raw materials stored in the other storage are isocyanates, The sprayer 4 is respectively connected to the two storages through pipelines, and the raw materials in the storages...

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Abstract

The invention provides a continuous production method for a composite type sleeper. The continuous production method comprises the following four procedures: (1) spreading: enabling spread glass fiber woven fabric to pass through a supporting-spreading mechanism; (2) soaking: uniformly spraying polyurethane resin on the surface of the glass fiber woven fabric, and then enabling the glass fiber woven fabric to pass through pair rolls, thus forming a flat surface; (3) winding: winding the glass fiber woven fabric on the outer surface of a sleeper inner core, shearing off the glass fiber woven fabric and placing the sheared glass fiber woven fabric in a mold; and (4) molding: aging the polyurethane resin in the mold, removing the mold after the aging is ended, thus obtaining the composite type sleeper. The invention also provides continuous production equipment for the composite type sleeper. The interlayer shearing force of the sleeper produced by the method is cannot be damaged easily, the polyurethane resin in the outer surface of the sleeper produced by the method is distributed uniformly, and continuous and automatic production is realized by virtue of the method.

Description

technical field [0001] The invention relates to a continuous production method of composite sleepers, and also relates to equipment for producing sleepers using the production method, which belongs to the field of sleepers. Background technique [0002] Sleepers are often used to carry objects and are indispensable materials in the fields of railway construction, special track running equipment laying and carrying equipment. According to the difference of its constituent materials, sleepers are mainly divided into wooden sleepers, reinforced concrete sleepers, steel sleepers and composite material sleepers. [0003] With the development of technology, the composite sleeper has become an emerging material sleeper. Compared with wooden sleepers, the composite sleeper has a stronger performance of absorbing the weight generated when the train is running, so it has been widely concerned in the field of railway construction. According to the different types of composite material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C53/56B29C53/80
CPCB29C53/80B29C53/56B29C53/60B29C70/18B29C63/10B29C70/56B29C70/34B29C53/8066
Inventor 张英杰祝涛陈文姬
Owner BEIJING PANTIAN NEW TECH
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