CN214216797U

CN214216797U - Impact-resistant sleeve

Info

Publication number: CN214216797U
Application number: CN202023043983.7U
Authority: CN
Inventors: 张庭军; 惠东宇
Original assignee: Renazhi Insulation Materials Suzhou Co ltd
Current assignee: Renazhi Insulation Materials Suzhou Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-09-17
Anticipated expiration: 2030-12-17

Abstract

The utility model discloses an impact-resistant sleeve, the impact-resistant sleeve is a hollow tubular structure, the sleeve comprises an inner weaving layer and an outer weaving layer, a first glue layer is arranged between the inner weaving layer and the outer weaving layer, the outer surface of the outer weaving layer is provided with a second glue layer, the inner weaving layer is formed by spirally and alternately weaving a plurality of warps and a plurality of wefts along the extending direction of the sleeve, and the warps and the wefts are blended yarns; the outer knitted layer comprises a plurality of circulation units distributed along the length direction of the sleeve, and the circulation units are formed by knitting weft yarns which are sequentially looped along the circumferential direction of the sleeve. The impact-resistant sleeve provided by the utility model has the advantages that the impact resistance and the wear resistance of the sleeve are improved by arranging the inner weaving layer and the outer knitting layer; the inner braid layer is formed by mixing and weaving glass fibers and aramid fibers, so that the strength is improved; the second adhesive layer is arranged to increase the rigidity and strength of the outer knitted layer; set up the third glue film, further increase the adhesive force on interior weaving layer and outer knitting layer, prevent the delaminating, the shaping is effectual.

Description

Impact-resistant sleeve

Technical Field

The utility model relates to a sleeve pipe field especially relates to an impact-resistant sleeve pipe.

Background

Conventional silica gel glass fiber sleeve pipe adopts alkali-free glass fiber raw yarn or bulked yarn to weave and forms, because of having excellent characteristics such as resistant chemistry, fire-retardant, insulating, fire prevention, thermal-insulated, the wide application is in industrial electronics wiring, coil parcel, electromechanical supporting, the terminal is connected, electrical apparatus instrument, electric power communication, navigation and space, photoelectric communication, car, war industry, fields such as electric power, but do not have protecting against shock and wear resistance, there is the potential safety hazard, from safety and life requirement, need a sleeve pipe that has excellent protecting against shock and wear-resisting urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art not enough, provide an impact-resistant sleeve pipe, technical scheme is as follows:

the utility model provides an impact-resistant sleeve, the impact-resistant sleeve is a hollow tubular structure, the sleeve includes inner weaving layer and outer knitting layer, be provided with first glue film between inner weaving layer and the outer knitting layer, the surface of outer knitting layer is provided with the second glue film, inner weaving layer is woven by many warp and many weft along the sheathed tube extending direction spiral is crisscross, warp and weft are mixed yarn; the outer knitted layer comprises a plurality of circulating units distributed along the length direction of the sleeve, and the circulating units are formed by knitting weft yarns which are sequentially looped along the length direction of the sleeve.

Further, the circulation unit comprises a first coil and a second coil which are mutually connected in series and in a sleeved mode, and the first coil and the second coil extend along the length direction of the sleeve.

Furthermore, the warp and the weft are formed by mutually twisting glass fibers and aramid fibers.

Furthermore, the material of the knitting weft is aramid fiber.

Further, the fineness of the aramid fiber is 1100 dtex.

Further, the first adhesive layer is made of high-temperature-resistant adhesive.

Further, the outer surface coating of second glue film has the third glue film, second glue film and third glue film are silica gel.

Further, the number of the crossing points of the warp and the yarn of the inner weaving layer in the axial direction of the impact-resistant sleeve is more than or equal to five in three centimeters.

Further, the surface of the inner braid has a chevron-shaped texture.

The utility model provides a beneficial effect that technical scheme brought as follows:

the impact-resistant sleeve provided by the utility model has the advantages that the impact resistance and the wear resistance of the sleeve are improved by arranging the inner weaving layer and the outer knitting layer; the inner woven layer is formed by blending and weaving glass fibers and aramid fibers, so that the strength is greatly improved, the service life is prolonged, and the first adhesive layer is arranged, so that the adhesion between the glass fibers and the aramid fibers can be improved, and the rigidity and the strength of the inner woven layer are enhanced; arranging a second adhesive layer to increase the rigidity and strength of the outer knitted layer; set up the third glue film, further increase the adhesive force on interior weaving layer and outer knitting layer, prevent the delaminating, the shaping is effectual.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a perspective view of an impact-resistant bushing provided by an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along the line A-A in FIG. 1;

fig. 3 is a partial enlarged view of the outer knitted layer of the impact sleeve provided by the present invention.

Wherein the reference numerals include: 1-inner weaving layer, 2-first glue layer, 3-outer weaving layer, 31-knitting weft, 32-first coil and 33-second coil.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.

In an embodiment of the present invention, an impact-resistant sleeve is provided, see fig. 1 to 2, the impact-resistant sleeve being a hollow tubular structure, the sleeve comprising an inner braid 1 and an outer braid 3, a first glue layer 2 being provided between the inner braid 1 and the outer braid 3, and a second glue layer being provided on the outer surface of the outer braid 3.

The specific structure of the inner braid 1 is as follows: the composite fabric is formed by spirally and alternately weaving a plurality of warps and a plurality of wefts along the extension direction of the sleeve, the warps and the wefts are blended yarns, the strength of a woven fabric after the blended yarns are woven is high, and the warps and the wefts are preferably formed by mutually twisting glass fibers and aramid fibers. The inner woven layer 1 is a dense woven fabric formed by blending glass fibers and aramid fibers, the aramid fibers have excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like, the strength of the aramid fibers is 5-6 times that of steel wires, the modulus of the aramid fibers is 2-3 times that of the steel wires or the glass fibers, the toughness of the aramid fibers is 2 times that of the steel wires, the weight of the aramid fibers is only about 1/5 times that of the steel wires, and the aramid fibers are not decomposed or melted at the temperature of 560 ℃. It also has good insulation and ageing resistance, and has long life cycle. Compared with a braided fabric formed by weaving glass fibers in the warp and the weft, the strength of the inner braided layer 1 formed by co-weaving the glass fibers and the aramid fibers is greatly improved, and the service life is prolonged. The inner braided layer 1 is manufactured by a knitting machine.

The surface of the inner braid 1 has a herringbone pattern. The number of the cross points of the warp and the yarns of the inner woven layer 1 in the three-centimeter length of the impact-resistant sleeve in the axial direction is more than or equal to five, and the inner woven layer is dense in fabric and higher in strength.

The outer knitted layer 3 has the following specific structure: referring to fig. 3, the knitting machine comprises a plurality of circulation units distributed along the length direction of the sleeve, the circulation units are formed by knitting weft threads 31 which are sequentially looped along the length direction of the sleeve, each circulation unit comprises a first loop 32 and a second loop 33 which are connected in series, the first loop 32 and the second loop 33 extend along the length direction of the sleeve, and the first loop 32 and the second loop 33 are arranged adjacently. The outer knitted layer 3 is produced by a knitting machine.

The material of the knitting weft is preferably aramid fiber, the aramid fiber has the excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like, and the impact resistance and the wear resistance of the sleeve are improved. The fineness of the aramid fiber is preferably 1100 dtex.

The first glue layer is a mixed glue containing a catalyst and an enzyme, so that the adhesiveness between the glass fiber and the aramid fiber can be increased, the rigidity and the strength of the inner weaving layer 1 are enhanced, the rigidity (hardening of the inner casing) and the strength of the inner casing are further enhanced, and the casing has the performances of light prevention and ultraviolet resistance. The enzyme is solid solution enzyme which has a silicone polymer with vinyl function and can generate a cross-linked coating with adhesive release performance after being cured; the catalyst is a platinum complex mixture and is mainly used as a catalyst of a solvent-free paper release agent system.

The second glue film is made by mixing high temperature resistant glue (like silica gel) and mill base, the mill base can dye outer knitting layer to the sleeve pipe is applied to different occasions, plays the effect of coloring on the one hand, on the other hand with outer knitting layer 3 bonding (carry out preliminary fixed to inner weaving layer and outer knitting layer earlier), increase knitting intensity between outer knitting layer 3's knitting weft 31, and then increase outer knitting layer 3's rigidity and intensity.

The third adhesive layer is high-viscosity silica gel, and the adhesive material of the third adhesive layer can be coated on the surface of the outer knitted layer 3 and in the first coil and the second coil of the circulating unit, so that the adhesive force of the inner knitted layer 1 and the outer knitted layer 3 is further enhanced, delamination is prevented, and the forming effect is good; the silica gel also has good high temperature resistance and insulating property, so that the whole sleeve has heat insulation and electric insulation properties, and the whole sleeve has good extensibility due to good flexibility of the silica gel layer; due to the insulating property of the silica gel layer, the insulating property of the sleeve is improved, the withstand voltage level can reach 4.0KV, and the wear resistance can reach several times or even tens of times of that of a common silica gel product. The withstand voltage grade can reach 4.0 KV: and when the boosting rate is 500V/S, observing the voltage value for breaking down the sleeve, namely the voltage-resistant grade.

Right the utility model provides an impact-resistant sheathed tube is able to bear or endure impact and wearability test and is obtained, sheathed tube impact-resistant index reaches LV312, E level 50J, and secondly the wearability is fine, and the index reaches LV312-D level.

The utility model provides an impact-resistant sleeve pipe's preparation process as follows: the method comprises the steps of weaving to form an inner woven layer, gluing the outer surface of the inner woven layer to form a first glue layer, then knitting outside the first glue layer to form an outer knitted layer, then dipping to form a second glue layer, and finally gluing to form a third glue layer.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. An impact-resistant sleeve is of a hollow tubular structure and is characterized by comprising an inner woven layer (1) and an outer woven layer (3), wherein a first adhesive layer (2) is arranged between the inner woven layer (1) and the outer woven layer (3), a second adhesive layer is arranged on the outer surface of the outer woven layer (3), the inner woven layer (1) is formed by spirally and alternately weaving a plurality of warps and wefts along the extending direction of the sleeve, and the warps and the wefts are blended yarns; the outer knitted layer (3) comprises a plurality of circulating units distributed along the length direction of the sleeve, and the circulating units are formed by knitting weft yarns (31) which are sequentially looped along the length direction of the sleeve.

2. The impact-resistant bushing of claim 1, wherein the circulation unit comprises a first coil (32) and a second coil (33) that are serially coupled to each other, the first coil (32) and the second coil (33) each extending along a length of the bushing.

3. The impact-resistant sleeve of claim 1 wherein said warp and weft yarns are each formed of glass and aramid fibers twisted with one another.

4. The impact-resistant sleeve of claim 1 wherein said knit weft is aramid fiber.

5. The impact-resistant bushing according to claim 4, characterized in that the aramid fiber has a fineness of 1100 dtex.

6. The impact-resistant bushing of claim 1 wherein the first layer of glue is a high temperature-resistant glue.

7. The impact-resistant bushing of claim 1 wherein an outer surface of the second layer of glue is coated with a third layer of glue, the second and third layers of glue being silicone.

8. The impact-resistant sleeve according to claim 1, characterized in that the number of intersections of said warp threads with said yarns of said inner braid (1) over a length of three centimeters in the axial direction of said impact-resistant sleeve is equal to or greater than five.

9. An impact-resistant bushing according to claim 1, characterized in that the surface of the inner braid (1) has a herringbone texture.