阅读说明：本技术 一种新型伸缩水管及其制造方法 (novel telescopic water pipe and manufacturing method thereof ) 是由 张志强 陈松 于 2019-08-26 设计创作，主要内容包括：本发明提供一种新型伸缩水管,其特征在于,包括依次设置的弹性内管、弹力编织层、弹力外层；所述弹力编织层包覆在弹力内管外部,所述弹力外层包覆于所述弹力编织层和弹力内管的外部,所述弹性内管、弹力编织层、弹力外层之间紧密贴合形成管体；所述弹力编织层包括由斜交的纱线组成的纱线编织层,所述纱线编织层内部对称排布有径向的弹力丝。本发明水管采用弹性材料,改变传统伸缩水管结构,具有收缩速度快、携带方便、清洁简单、收纳整洁的特点,避免了传统伸缩水管内层管和布套之间的强烈摩擦,提高伸缩水管的使用寿命。(The invention provides a novel telescopic water pipe which is characterized by comprising an elastic inner pipe, an elastic braiding layer and an elastic outer layer which are sequentially arranged; the elastic braided layer is wrapped outside the elastic inner tube, the elastic outer layer is wrapped outside the elastic braided layer and the elastic inner tube, the elastic braided layer and the elastic outer layer are tightly attached to form a tube body; the elastic weaving layer comprises a yarn weaving layer formed by oblique yarns, and radial elastic yarns are symmetrically distributed in the yarn weaving layer. The water pipe disclosed by the invention is made of elastic materials, changes the structure of the traditional telescopic water pipe, has the characteristics of high contraction speed, convenience in carrying, simplicity in cleaning and tidiness in storage, avoids strong friction between the inner-layer pipe and the cloth cover of the traditional telescopic water pipe, and prolongs the service life of the telescopic water pipe.)

1. A novel telescopic water pipe is characterized by comprising an elastic inner pipe, an elastic braiding layer and an elastic outer layer which are sequentially arranged; the elastic braided layer is wrapped outside the elastic inner tube, the elastic outer layer is wrapped outside the elastic braided layer and the elastic inner tube, the elastic braided layer and the elastic outer layer are tightly attached to form a tube body;

The elastic weaving layer comprises a yarn weaving layer formed by oblique yarns, and radial elastic yarns are symmetrically distributed in the yarn weaving layer.

2. The novel telescopic water pipe as claimed in claim 1, wherein said elastic filaments are covered by said woven yarn layer, said woven elastic layer being capable of limiting lateral expansion and achieving longitudinal elongation.

3. The novel telescopic water pipe according to claim 2, wherein the longitudinal length of the elastic braided layer is extended to 1 to 7 times of the original longitudinal length.

4. The novel telescopic water pipe as claimed in claim 1, wherein the number of the elastic threads in the elastic woven layer is 8-96, and the diameter of the elastic threads is 0.25mm-2 mm.

5. The novel telescopic water pipe as claimed in claim 1, wherein the yarn woven layer of the elastic woven layer is any one of a polyester woven layer, a polypropylene woven layer, a polyamide woven layer and an acrylic woven layer, and the yarn woven layer is formed by obliquely weaving 10D-5000D yarns.

6. The novel telescopic water pipe according to claim 1, wherein the elastic inner pipe is a thermoplastic elastic inner pipe or a rubber inner pipe, the inner diameter of the elastic inner pipe is 3mm-95mm, the outer diameter is 3.2mm-100mm, and the wall thickness is 0.2mm-10 mm; the elastic outer layer is a thermoplastic elastic outer layer or a rubber outer layer, and the wall thickness of the elastic outer layer is 0.2mm-10 mm.

7. The novel telescopic water pipe according to claim 1, further comprising joints, wherein the joints are respectively arranged at two ends of the pipe body; the joint comprises a convex connecting piece, a buckle and a loose joint thread locking piece, the convex connecting piece is arranged in the elastic inner pipe, the buckle is of a claw type structure, the buckle is arranged on the outer side of the elastic inner pipe, the loose joint thread locking piece is arranged on the outer side of the buckle, and the loose joint thread locking piece is matched and connected with the buckle to lock the elastic inner pipe on the outer side of the convex connecting piece; the convex connecting piece is of a hollow structure and comprises a body and a convex part which are connected, the tail end of the convex part is symmetrically provided with an arc-shaped limiting part, and the outer side of the body is provided with a threaded part; the threaded part is connected with the loose joint threaded locking part in a matched mode.

8. The telescopic water pipe as claimed in claim 7, wherein the joint is provided with one of the following external joint structures at an end away from the pipe body: a quick connect connection structure, an internal thread joint structure or an external thread joint structure.

9. A method for manufacturing a novel telescopic water pipe according to any one of claims 1 to 8, characterized by comprising the following steps:

(1) Preparing an elastic inner tube: preparing an elastic inner tube by adopting an extrusion or coating production mode;

(2) Preparing an elastic braid layer on the outer side of the elastic inner tube: stretching the elastic yarns by 2-7 times in the original state on a knitting machine, and then knitting the elastic yarns simultaneously, synchronously feeding the prepared elastic inner tube into the knitting machine in a natural state, wherein a yarn knitting layer formed by obliquely crossing the knitted elastic yarns and the yarns retracts to the natural state along with the elastic inner tube, and thus a stretchable elastic knitting layer can be formed outside the elastic inner tube;

(3) preparing an elastic outer layer: and extruding or coating the elastic inner tube coated by the elastic braided layer to form an elastic outer layer on the surface of the elastic inner tube, and tightly combining the elastic outer layer with the elastic braided layer and the elastic inner tube in sequence to obtain the tube body.

10. The method for manufacturing the novel water hose according to claim 9, further comprising a step of performing linkage production or sectional production by using an extruder, a braiding machine and a coating machine, wherein the linkage production of the extruder, the braiding machine and the coating machine comprises one of the following four ways: the production line comprises an extruder, a braiding machine and a coating machine, the production line comprises a coating machine, a braiding machine and an extruder, the production line comprises an extruder, a braiding machine and an extruder, and the production line comprises a coating machine, a braiding machine and a coating machine.

Technical Field

The invention relates to the technical field of telescopic water pipes, in particular to a novel telescopic water pipe and a manufacturing method thereof.

Background

The existing telescopic water pipes in the market at present are mostly composed of an inner core elastic pipe and an outer layer protective sleeve, the elastic pipe is made of latex, rubber or TPR thermoplastic elastomer, and when 3-10 kg of pressure water is connected, the radial water passing area and the longitudinal length of the elastic pipe can be expanded and extended by 2-4 times under the protection of the outer layer protective sleeve due to high elasticity of the elastic pipe; when the pressure water source is turned off, the telescopic water pipe discharges the residual water in the pipe rapidly under the effect of the resilience force of the inner core elastic pipe, and the residual water is retracted to the original product size, so that the telescopic water pipe is convenient to use and is deeply loved by customers at home and abroad. However, the service life of the telescopic water pipe with the structure is shorter, the storage volume is larger, and the cloth cover on the outer surface is easy to be polluted, so that the expectation of people cannot be reached.

detailed market research shows that 70% of the damage of the telescopic water pipe in use is caused by strong friction and tearing of the inner pipe and the outer sleeve, and after the telescopic water pipe is connected with a pressure water source, the elastic pipe of the inner core of the telescopic water pipe rapidly expands and expands to generate strong friction and tearing force with the folded outer sleeve; when the pressure water source is turned off and the retraction process is carried out, the inner core elastic tube and the outer cloth cover can rub again; in addition, sundries such as sand grains, branches and the like penetrate through the cloth sleeve in the using process, so that the water pipe can be fatally damaged in the expansion, extension and retraction processes. In order to solve the above drawbacks, engineers have made many researches, such as the patent with application number 201320166720.6, which discloses "a telescopic water pipe with plastic film inside" utility model, the friction and tear strength is reduced by adding a layer of plastic film between the water-through inner rubber tube and the corrugated outer sheath, but the plastic film has no elasticity and is not wear-resistant, the technical proposal is that the film is broken after being stretched for about forty times in the specific implementation, the broken film fragments which reach about sixty times are agglomerated, the generated conglomerate fragments further increase the friction force of the water-through inner core of the telescopic water pipe, so the scheme has a certain protection function on the water-through inner core in the early stage of use, however, after the use times reach about 60 times, the effect of increasing the friction and tear stress on the water passing inner core can be reversely achieved, and the problem of prolonging the service life of the telescopic water pipe cannot be really solved. In order to solve the problems, the patent with the application number of 201520897299.5 discloses a 'wear-resistant synchronous telescopic water pipe' in the utility model, the bamboo joint type woven mesh outer sleeve is arranged outside the elastic pipe inner core, the bamboo joint type woven mesh outer sleeve and the water elastic pipe inner core are synchronous, radial and axial telescopic, the friction force and the tearing force between the outer sleeve and the water elastic pipe inner core in the telescopic process can be effectively reduced, but the length ratio of the bamboo joint type outer sleeve and the inner core elastic pipe adopted in the patent is 6:1, the weight of the telescopic water pipe is greatly increased, in addition, the adopted outer sleeve is made of textile materials, the outer sleeve is easy to dirty in the using process, inconvenient cleaning and arrangement are realized, the convenience of the telescopic water pipe is greatly reduced, and in addition, the processing and assembling processes of the telescopic water pipe are complicated.

therefore, the 'high-pressure-resistant and wear-resistant telescopic water pipe without a cloth sleeve' disclosed in the patent No. 201720093703.2 adopts the telescopic water pipe with the elastic inner pipe, the high-strength silk screen and the elastic outer glue layer as the water pipe main body, so that the problem that the service life of the water pipe is reduced due to strong friction force and tearing force generated by the elastic pipe of the inner core and the folded outer sleeve in the traditional telescopic water pipe is solved, and the telescopic water pipe is convenient to carry and easy to clean. However, the telescopic water pipe is only provided with a simple layer of high-strength silk screen added into the elastic pipe, so that the radial and axial extension of the telescopic water pipe is limited, and can only reach 1.5 times at most, and the extension amount is limited. In order to solve the above problems, US20180299038a1, which uses a two-layer weave structure, wherein the outer side of the elastic inner tube adopts a weaving structure which can stretch longitudinally and transversely, then an elastic glue layer is extruded on the weaving structure to fix the woven net, a layer of yarn is wound outside the elastic rubber layer, so that the expansion of the transverse area of the rubber pipe is limited, the expansion length of the rubber pipe can reach 2.5 times, the technology solves the problem that the extension length of the telescopic water pipe without the cloth sleeve is limited, but the processing and the production are complicated due to the adoption of a multi-layer woven structure, in addition, the elasticity of the structure is mainly derived from the elastic glue layer, the elasticity is limited and the retraction process is slow due to the extension and the expansion of the braided layer limiting tube, in addition, when the water pipe is used, the adhesion glue layer in the middle of the water pipe is damaged due to the two-layer woven structure, the local expansion of the telescopic water pipe is too large and the telescopic water pipe is damaged, and the service life is short.

therefore, the technical staff in the field needs to solve the problem of how to change the current situation that the telescopic water pipe is easy to break due to abrasion, stress and the like in the prior art, prolong the service life of the telescopic water pipe, and improve the convenience and storage cleanliness of the telescopic water pipe.

Disclosure of Invention

In view of the above, the invention provides a novel telescopic water pipe and a manufacturing method thereof, so as to solve the problems in the prior art, the water pipe provided by the invention adopts an elastic material, changes the structure of the traditional telescopic water pipe, has the characteristics of high contraction speed, convenience in carrying, simplicity in cleaning and tidy storage, avoids strong friction between an inner pipe and a cloth cover of the traditional telescopic water pipe, and prolongs the service life of the telescopic water pipe.

The technical scheme of the invention is as follows:

A novel telescopic water pipe is characterized by comprising an elastic inner pipe, an elastic braiding layer and an elastic outer layer which are sequentially arranged; the elastic braided layer is wrapped outside the elastic inner tube, the elastic outer layer is wrapped outside the elastic braided layer and the elastic inner tube, the elastic braided layer and the elastic outer layer are tightly attached to form a tube body;

The elastic weaving layer comprises a yarn weaving layer formed by oblique yarns, and radial elastic yarns are symmetrically distributed in the yarn weaving layer.

The invention adopts the pipe body structure that the elastic inner pipe, the elastic braiding layer and the elastic outer layer are tightly combined, and changes the mode that the inner core elastic pipe and the outer cloth cover are separated from each other adopted by the traditional telescopic water pipe, so that the pipe body has smaller volume and more compact structure. Meanwhile, each layer of the pipe body has elasticity, so that the telescopic water pipe can be extended by 1-5 times under the action of a pressure water source, and can be retracted quickly after the pressure water source is cut off, and the use efficiency of the pipe body is greatly improved.

Further, the elastic yarns are wrapped by the yarn weaving layers, and the elastic weaving layers can limit transverse expansion and achieve longitudinal extension.

furthermore, the transverse direction of the elastic woven layer can bear 8-30 kilograms of pressure, and the longitudinal length of the elastic woven layer is extended to be 1-7 times of the original longitudinal length.

furthermore, the number of the elastic threads in the elastic weaving layer is 8-96, and the diameter of the elastic threads is 0.25mm-2 mm.

Furthermore, the yarn woven layer of the elastic woven layer is any one of a polyester woven layer, a polypropylene woven layer, a polyamide woven layer and an acrylic woven layer, and the yarn woven layer is formed by obliquely weaving 10D-5000D yarns.

According to the invention, the yarn woven layer of the elastic woven layer is formed by obliquely weaving the elastic material containing warp yarns and the fiber material, so that the expansion of the transverse area of the elastic woven layer is effectively limited, and meanwhile, the longitudinal stretching of the elastic woven layer can be realized by matching the action of the elastic yarns, so that the elastic inner tube and the elastic outer layer are further limited to only realize transverse contraction movement and longitudinal extension movement, the expansion of the cross section of the tube body is effectively avoided, the utilization rate of the tube body is improved, and the service life of the tube body is prolonged.

Furthermore, the inner diameter of the elastic inner tube is 3mm-95mm, the outer diameter is 3.2mm-100mm, and the wall thickness is 0.2mm-10 mm; the elastic outer layer is a thermoplastic elastic outer layer or a rubber outer layer, and the wall thickness of the elastic outer layer is 0.2mm-10 mm.

The elastic outer layer is formed by extruding or coating to coat the elastic braided layer and the elastic braided layer in sequence an inner tube.Through the elastic outer layer, on one hand, external foreign matters can be effectively prevented from entering the elastic weaving layer, and the elastic inner tube is torn in the dynamic friction between the elastic weaving layer and the elastic inner tube, so that the service life of the tube body is influenced; on the other hand, the elastic outer layer enables the elastic braided layer and the elastic inner tube to be tightly combined, synchronous stretching can be basically realized, fluctuation friction between the elastic braided layer and the elastic inner tube is greatly reduced, and the service life of the elastic wire of the elastic braided layer is prolonged; make the body volume littleer simultaneously, the structure is compacter, and the elasticity skin helps improving the elongation and the resilience contractility performance of body, further improvement the availability factor of body. In addition, the elastic outer layer also enables the pipe body to be easier to clean and maintain.

Furthermore, the novel telescopic water pipe also comprises joints, and the joints are respectively arranged at two ends of the pipe body; the joint comprises a convex connecting piece, a buckle and a loose joint thread locking piece, the convex connecting piece is arranged in the elastic inner pipe, the buckle is of a claw type structure, the buckle is arranged on the outer side of the elastic inner pipe, the loose joint thread locking piece is arranged on the outer side of the buckle, and the loose joint thread locking piece is matched and connected with the buckle to lock the elastic inner pipe on the outer side of the convex connecting piece; the elastic inner pipe is characterized in that the convex connecting piece is of a hollow structure and comprises a body and a boss which are connected, the tail end of the boss is symmetrically provided with arc-shaped limiting parts which are beneficial to preventing the displacement of the elastic inner pipe, and the outer side of the body is provided with a threaded part; the threaded part is connected with the loose joint threaded locking part in a matched mode. The joint is provided with a through hole which is communicated with the elastic inner tube, and the joint can be connected with an external water source or a water using component. Through the cooperation connection between convex connecting piece, buckle, the loose joint screw thread retaining member is further detained steadily with buckle locking for the elastic inner tube forms stable structure in the convex connecting piece outside, with the elastic inner tube restriction inside connecting, does not take place the displacement when bearing pressure.

further, the connector is provided with one of the following external connector structures at the end far away from the pipe body: a quick connect connection structure, an internal thread joint structure or an external thread joint structure.

The manufacturing method of the novel telescopic water pipe is characterized by comprising the following steps:

(1) preparing an elastic inner tube: preparing an elastic inner tube by adopting an extrusion or coating production mode;

(2) Preparing an elastic braid layer on the outer side of the elastic inner tube: after the elastic yarn is stretched by 2-7 times in the original state by a knitting machine, the elastic yarn and the yarn are knitted simultaneously, synchronously, the prepared elastic inner tube is sent into the knitting machine in a natural state, and a yarn knitting layer formed by obliquely crossing the knitted elastic yarn and the yarn retracts to the natural state along with the elastic inner tube, so that a stretchable elastic knitting layer can be formed outside the elastic inner tube;

(3) Preparing an elastic outer layer: and extruding or coating the elastic inner tube coated by the elastic braided layer to form an elastic outer layer on the surface of the elastic inner tube, and tightly combining the elastic outer layer with the elastic braided layer and the elastic inner tube in sequence to obtain the tube body.

Further, the manufacturing method also comprises the step of performing linkage production or sectional production by adopting an extruder, a knitting machine and a coating machine, wherein the linkage production of the extruder, the knitting machine and the coating machine comprises one of the following four modes: the production line comprises an extruder, a braiding machine and a coating machine, the production line comprises a coating machine, a braiding machine and an extruder, the production line comprises an extruder, a braiding machine and an extruder, and the production line comprises a coating machine, a braiding machine and a coating machine.

In particular, the method for producing the elastic inner tube/elastic outer layer by means of extrusion or coating can be realized by any of the prior art. For example, the coating production mode can be realized by adopting processing equipment and a method of Chinese patent '201610764418.9, a novel latex tube manufacturing device' and Chinese patent '201110458125.5, a novel process for producing a multilayer composite high-elasticity rubber tube'; the extrusion production mode can adopt equipment disclosed in Chinese patent 201820163303.9, a practical rubber tube extruder, Chinese patent 201620129232.1, a vertical extrusion production line of a silicone rubber tube, Chinese patent 201720369419.3 and a rubber extruder for rubber hose production, a preparation method of rubber tubes made of ethylene propylene rubber/polypropylene thermoplastic elastomer and Chinese patent 200610013445.9, design and trial production of an XJWU-120 rubber cold feed rubber tube extruder disclosed in the No. 1 of 1994 in rubber technology and equipment in China journal, and an extrusion production method disclosed in a continuous extrusion production line of knitted rubber tube blanks disclosed in the No. 46 of 1999 in rubber industry in China journal.

The extruder, braiding machine, coating machine can be implemented using any of the prior art equipment in the field.

The invention has the beneficial effects that:

The novel telescopic water pipe adopts the pipe body structure that the elastic inner pipe, the elastic weaving layer and the elastic outer layer are tightly combined, changes the mode that the inner core elastic pipe and the outer cloth cover are separated from each other adopted by the traditional telescopic water pipe, and overcomes the defect of short service life caused by strong friction of the inner core elastic pipe and the outer cloth cover of the traditional telescopic water pipe; in addition, the inner tube, the woven layer and the outer layer have elasticity, the woven layer is formed by obliquely weaving elastic materials containing warp yarns and fiber materials, the telescopic water pipe can be stretched by 1-5 times under the action of a pressure water source, and can be quickly retracted after the pressure water source is cut off, so that the use is convenient and quick; the outermost layer is made of thermoplastic material or rubber material, so that the cleaning is convenient; adopt three layer construction compound integrative, accomodate neatly.

The telescopic water pipe adopts the extruder, the braiding machine and the coating machine to carry out linkage production or sectional production, can form four different linkage production lines by changing the processing modes of the inner pipe and the outer pipe, and has the advantages of simple preparation process, low cost and the like.

Drawings

Fig. 1 is a schematic structural view of a tube according to an embodiment of the present invention;

FIG. 2 is a schematic view of a tube in an extended state when the tube is connected to a pressurized water source and filled with water according to an embodiment of the present invention;

FIG. 3 is a view showing the original contraction state of the telescopic water pipe of the present invention during use;

FIG. 4 is a semi-stretched state diagram of the telescopic water pipe of the present invention during use;

FIG. 5 is a view showing the fully extended and stretched state of the telescopic hose of the present invention during use;

FIG. 6 is a cross-sectional view of a tubular body according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of a tubular body according to one embodiment of the present invention;

FIG. 8 is a cross-sectional view of a tubular body according to one embodiment of the present invention;

FIG. 9 is a schematic view of a structure of an external connector structure according to an embodiment of the present invention;

FIG. 10 is a schematic view of a structure of an external connector structure according to an embodiment of the present invention;

FIG. 11 is a schematic view of a structure of an external connector structure according to an embodiment of the present invention;

FIG. 12 is a schematic view of a structure of an external connector structure according to an embodiment of the present invention;

FIG. 13 is a schematic view of a structure of an external connector structure according to an embodiment of the present invention;

FIG. 14 is a schematic view of a structure of an external connector structure according to an embodiment of the present invention;

FIG. 15 is a schematic view of a manufacturing linkage line of the present invention;

FIG. 16 is a schematic view of a manufacturing linkage line of the present invention;

FIG. 17 is a schematic view of a manufacturing linkage line of the present invention;

FIG. 18 is a schematic view of a manufacturing linkage line of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.