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Clamping insertion strip with compound skeleton and forming process thereof

A molding process and molding technology, which is applied in the field of clamping molding and its molding process, can solve the problems of the gap at the joint becoming larger and the length difference cannot be overcome.

Inactive Publication Date: 2012-02-22
余惠江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the original sealing strip used for escalators can clamp, seal and decorate, but because it is a pure plastic product, it cannot overcome the length difference due to thermal expansion and contraction, especially because of the large temperature difference outdoors, the joints of the product will change with time. The change of temperature and the passage of time make the gap at the joint larger, and the composite skeleton clamping strip just solves this problem

Method used

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  • Clamping insertion strip with compound skeleton and forming process thereof
  • Clamping insertion strip with compound skeleton and forming process thereof
  • Clamping insertion strip with compound skeleton and forming process thereof

Examples

Experimental program
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no. 1 example

[0026] Such as figure 1 , figure 2 and Image 6 As shown, a clamping strip with a composite skeleton and its molding process of the present invention include a strip body 2 made of hard modified PVC material, wherein the outer surface of the initial straight section of the strip body 2 is compounded with a A clamping body 3 made of a layer of soft modified PVC material, the clamping body 3 extends along the extension direction of the initial straight section and is formed with a clamping strip convex body 31 for clamping the clamping body assembly 4, the clamping body 3 and the embedded A reinforcing frame 1 is embedded between the composite surfaces of the initial straight section of the strip body 2, and the strip body 2, the reinforcing frame 1 and the clamping body 3 are a composite extruded part. The clamping strip of the present invention is formed by composite extrusion of the strip body 2, the reinforcement frame 1 and the clamping body 3, and the reinforcement fram...

no. 2 example

[0036] The second embodiment: by weight percentage, the polyvinyl chloride resin in the strip body 2 is 85%, the plasticizer is 0%, and the auxiliary material is 15%; the sum of the contents of the above-mentioned components is 100%.

[0037] A molding process for clamping strips with a composite skeleton of the present invention comprises the following steps:

[0038] Step 1, mixing and granulation step: by weight percentage, carry out rigid plastic modification mixing and granulation with 85% polyvinyl chloride resin, 0% plasticizer and 15% auxiliary materials;

[0039] Step 2, plastic modification step: by weight percentage, carry out soft plastic modification mixing granulation with 65% polyvinyl chloride resin, 30% plasticizer and 5% auxiliary materials;

[0040] Step 3. Forming step of composite skeleton clamping strip molding: the steel skin of the skeleton is formed through a plastic extruder and a molding die, and is shaped by a vacuum shaping die, pulled, and then cu...

no. 3 example

[0042] The third embodiment: by weight percentage, the polyvinyl chloride resin in the molding body 2 and the clamping body 3 is 70%, the plasticizer is 20%, and the auxiliary material is 10%; the sum of the above-mentioned components is 100% .

[0043] A molding process for clamping strips with a composite skeleton of the present invention comprises the following steps:

[0044] Step 1, mixing and granulating step: calculating by weight percentage, mixing and granulating 70% polyvinyl chloride resin, 20% plasticizer and 10% auxiliary materials;

[0045] Step 2, plastic modification step: adding a hard plastic modifier and a soft plastic modifier to the mixed and granulated plastic to modify the hard plastic and soft plastic;

[0046] Step 3. Forming step of composite skeleton clamping strip molding: the steel skin of the skeleton is formed through a plastic extruder and a molding die, and is shaped by a vacuum shaping die, pulled, and then cut to length according to needs;

...

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Abstract

The invention relates to a clamping insertion strip with a compound skeleton, which comprises an insertion strip main body made of a hard modified PVC material. The insertion strip main body is an S-shaped structure, and one layer of clamping body made of a soft modified PVC material is compounded on the external surface of the starting straight section of the S-shaped insertion strip main body. The clamping body is provided with a clamping strip convex body for clamping a clamping body assembly in a stretching way in the extension direction of the starting straight section, and an enhancing skeleton is embedded between the clamping body and the compounding surface of the starting straight section of the insertion strip main body or in the starting straight section. The insertion strip main body, the enhancing skeleton and the clamping body are integrally compounded extrusion parts. The steel enhancing skeleton has high strength, small influence by temperature difference, small contraction distortion and strong impact resistance, and the expansion and contraction of the clamping insertion strip is reduced. The stainless steel insertion strip not only can be wrapped but also can be exposed and is beautiful in appearance. The clamping insertion strip provided by the invention has the advantages of small contraction distortion, strong impact resistance, small contraction gap in clamping insertion strip joint, good weather resistance, beautiful appearance and long service life and is an ideal substitute for the prior art.

Description

technical field [0001] The invention relates to the technical field of escalators, in particular to a clamping strip used for clamping inner and outer cover plates and glass of an escalator, specifically, a clamping strip with a composite skeleton and a molding process thereof. Background technique [0002] At present, the competition in the elevator and escalator market is increasingly fierce, and the products are constantly updated. On the premise of ensuring the quality, major elevator companies have intensively simplified and continuously replaced and improved the sealing strips used in escalators. From the perspective of their functions, the sealing strips used in escalators are nothing more than clamping, sealing and decorative functions. Although the original sealing strip used for escalators can clamp, seal and decorate, but because it is a pure plastic product, it cannot overcome the length difference due to thermal expansion and contraction, especially because of t...

Claims

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Application Information

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IPC IPC(8): F16B2/22B66B23/00C08L27/06B29C47/00B29C47/08B29B9/00
Inventor 余惠江
Owner 余惠江
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