A kind of winding flat hose manufacturing equipment and production method

Abstract

The present invention discloses a winding flat hose manufacturing device and a production method, comprising a flat hose supporting structure, a rail car, an axial layer laying device, an axial layer laying hot air gun, a circumferential spiral winding device and a spiral winding hot air gun. The present invention provides a winding flat hose manufacturing device and a production method, which realizes the production of flat hoses of more than 30 meters, and the pressure bearing capacity of the prepared flat hose is between 2 MPa and 20 MPa, and the caliber is 100-1000 mm.

Description

Technical Field

[0001] The invention relates to a hose manufacturing device and a production method, in particular to a winding flat hose manufacturing device and a production method, belonging to the technical field of hose manufacturing. Background Art

[0002] At present, traditional flat hoses, such as fire hoses and flat hoses for emergency rescue, are all braided structures. The advantage of this structure is that the tube body is woven with gaps, which is convenient for the bonding of elastomers and rubber. At the same time, it can be flattened, coiled and bent at will, which is convenient for rapid laying and installation. It is widely used in various emergency fields. However, at present, emergency flat hoses are mainly used for short-distance water supply, such as fire water. For pipeline maintenance and repair in the oil or chemical fields, this flat hose has a low pressure and cannot meet the requirements. Engineers can easily think of using spiral winding to thicken the thickness of the flat hose to enhance its pressure bearing capacity, but because the flat hose is a flattenable structure, winding will cause the pipeline to collapse.

[0003] The traditional winding method is generally used to produce rubber hoses. Due to the limitations of the vulcanization process, rubber hoses produced by the non-continuous method are generally shorter in length, typically ranging from 4 meters, 6 meters, to 9 meters. In addition to the very expensive cost of the vulcanization tank, the manufacturing of a rotating body that is too long is also difficult. The internal mechanical inflation structure occupies a large space and weight inside the shaft. When the length is long, the deadweight droop stress in the middle is very large, and even if a manufactured structure is used, the wound elastomer will be squeezed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a winding flat hose manufacturing device and a production method to achieve the winding production of hoses over 30 meters long.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A winding flat hose manufacturing equipment comprises a flat hose supporting structure, a rail car, an axial laying device, an axial laying hot air gun, a circumferential spiral winding device and a spiral winding hot air gun, the flat hose is sleeved on the flat hose supporting structure and driven by the flat hose supporting structure to rotate circumferentially of the flat hose, the axial laying device is arranged on the upper side of the flat hose supporting structure to perform spiral laying of axial prepreg tape on the flat hose, the axial laying hot air gun is arranged on the axial laying device, the circumferential spiral winding device is arranged on one side of the flat hose supporting structure to perform circumferential spiral winding of spiral prepreg tape on the flat hose, the spiral winding hot air gun is arranged on the circumferential spiral winding device, the rail car is arranged on one side of the flat hose supporting structure, the axial laying device and the circumferential spiral winding device are both arranged on the rail car and driven by the rail car to move axially along the flat hose supporting structure.

[0007] Furthermore, the flat hose support structure includes a support structure, a frame and a motor, both ends of the support structure are rotatably set on the frame and one end of the support structure is connected to the motor and driven by the motor, the support structure includes a main shaft, multiple rigid brackets and multiple groups of inflatable airbags, the multiple rigid brackets are arranged on the main shaft in sequence, each group of inflatable airbags is composed of multiple inflatable airbags and each group of inflatable airbags is arranged on the outside of the rigid bracket.

[0008] Furthermore, the rigid support comprises two annular end plates, multiple spoke plates, multiple support plates and multiple partitions, the annular end plate is arranged perpendicular to the axial direction of the main shaft, one end of the spoke plate is fixed to the outside of the main shaft, and the other end of the spoke plate is fixed to the annular end plate, the spoke plate is arranged along the radial direction of the annular end plate and the multiple spoke plates are distributed at equal intervals along the circumference of the annular end plate, the partition plate is arranged along the radial direction of the annular end plate and the two ends of the partition plate are respectively fixed to the two annular end plates, the multiple partitions are distributed at equal intervals along the circumference of the annular end plates, the support plate is arranged perpendicular to the radial direction of the annular end plate, the two ends of the support plate are fixed to the annular end plate, the two sides of the support plate are respectively fixed to the lower sides of two adjacent partitions, the support plate, the partition plate and the annular end plate form multiple inflatable airbag cavities on the surface of the rigid support, the inflatable airbag is arranged in the inflatable airbag cavity and at least one inflatable airbag is arranged in the inflatable airbag cavity.

[0009] Furthermore, the frame includes a motor base and a bearing seat, the motor is fixed on the upper side of the motor base, one end of the main shaft is connected to the motor through a coupling and is driven to rotate by the motor, and the other end of the main shaft is rotatably arranged in the bearing seat through a bearing.

[0010] Furthermore, the flat hose supporting structure also includes a plurality of supporting structure supporting mechanisms, which are arranged at equal intervals on the lower side of the rigid bracket, and each supporting structure supporting mechanism includes a supporting bracket and two pins, the two pins are arranged parallel to each other and both ends of the pins are rotatably arranged on the upper end of the supporting bracket, the pins are arranged perpendicular to the axial direction of the rigid bracket and the upper side of the pins abuts against the lower side of the rigid bracket, a slide rail is arranged on the lower side of the supporting structure supporting mechanism, the slide rail is arranged parallel to the axial direction of the rigid bracket and below the rigid bracket, and the bottom of the supporting bracket is slidably arranged on the slide rail.

[0011] Furthermore, the axial lamination device includes an axial lamination support, an axial prepreg tape unwinding disk, a plurality of axial prepreg tape tension rollers and an axial prepreg tape pressure roller, the axial prepreg tape unwinding disk is rotatably arranged at the upper end of the axial lamination support, the axial prepreg tape pressure roller is rotatably arranged at the lower end of the axial lamination support and presses against the upper side of the flat hose on the flat hose support structure, and the plurality of axial prepreg tape tension rollers are arranged on the axial lamination support between the axial prepreg tape unwinding disk and the axial prepreg tape pressure roller.

[0012] Further, the axial lamination hot air gun is fixed on the axial lamination bracket through the axial lamination hot air gun bracket, and the axial lamination hot air gun head faces the axial prepreg tape on the lower side of the axial prepreg tape pressure roller.

[0013] Furthermore, the circumferential spiral winding device includes several groups of circumferential spiral winding mechanisms, which are arranged in parallel in the rail car, each group of circumferential spiral winding mechanisms includes a spiral prepreg unwinding disk, a spiral prepreg unwinding bracket, several spiral prepreg tension rollers, a spiral prepreg tension roller bracket, a spiral prepreg pressure roller and a spiral prepreg pressure roller bracket, the spiral prepreg unwinding disk is rotatably arranged on the spiral prepreg unwinding bracket, several spiral prepreg tension rollers are rotatably arranged on the spiral prepreg tension roller bracket, the spiral prepreg unwinding bracket and the spiral prepreg tension roller bracket are fixed on the rail car, the spiral prepreg pressure roller is rotatably arranged on the spiral prepreg pressure roller bracket, and the spiral prepreg pressure roller bracket is fixedly connected to the axial lamination bracket.

[0014] Furthermore, the spirally wound hot air gun is fixed on the spiral prepreg tape pressure roller bracket and the gun head of the spirally wound hot air gun faces the spiral prepreg tape on the lower side of the spiral prepreg tape pressure roller. The number of the spirally wound hot air guns is equal to the number of the annular spiral winding mechanisms and the spirally wound hot air guns are arranged one by one on each group of the annular spiral winding mechanisms.

[0015] A method for producing a wound flat hose comprises the following steps:

[0016] S1. Prepare an axial prepreg tape, select axial high-strength aramid fiber, the strength of the axial high-strength aramid fiber is 20 cm / dtex, the fiber linear density of the axial high-strength aramid fiber is 17000-19000 denier, and the fiber single-strand breaking force of the axial high-strength aramid fiber is 3800-4200 Newton, and prepare the axial high-strength aramid fiber into an axial prepreg tape by a unidirectional prepreg tape process, the axial prepreg tape has a width of 90-110 mm, and the axial prepreg tape contains 52-56 axial high-strength aramid fibers and is composited into an integral axial prepreg tape by a polyurethane elastomer;

[0017] S2, preparing a spiral prepreg tape, selecting spiral high-strength aramid fiber, the strength of the spiral high-strength aramid fiber is 20 cm / dtex, the fiber linear density of the axial high-strength aramid fiber is 1000-23000 denier, and the fiber single-strand breaking force of the axial high-strength aramid fiber is 4500-4800 Newton, and the spiral high-strength aramid fiber is prepared into a spiral prepreg tape by a unidirectional prepreg tape process, the width of the spiral prepreg tape is 90-110 mm, and the spiral prepreg tape contains 43-47 axial high-strength aramid fibers and is compounded into a spiral prepreg tape as a whole by a polyurethane elastomer;

[0018] S3. After the polyurethane hose with an inner diameter of 380-420 mm and a thickness of 2-4 mm is extruded and processed, it is inserted into the flat hose support structure, and the airbag is inflated to expand and fix the polyurethane hose;

[0019] S4. Spirally lay the axial prepreg tape on the outside of the polyurethane hose through the axial prepreg tape laying device. The number of axial prepreg tapes laid in a single layer is 10-14. A gap of 7-8 mm is reserved between each axial prepreg tape for heating and welding the polyurethane overflow.

[0020] S5. Wrap the spiral prepreg tape around the outside of the polyurethane hose through a circumferential spiral winding device. The number of spiral prepreg tape winding layers is 2. The number of winding roots of each layer of spiral prepreg tape is 3-5. The reserved gap between each spiral prepreg tape is 3-5 mm for heating and welding polyurethane overflow. The winding angle of the spiral prepreg tape is 76-77 degrees. The thickness of a single layer of spiral prepreg tape is 2.4-2.5 mm.

[0021] S6, during the axial prepreg layering and spiral prepreg winding process, the prepreg is heated and melted by an electric hot air gun, and then the prepreg is pressed and fitted by the corresponding pressing roller. The hot melting temperature of the electric hot air gun is 150-170°C;

[0022] S7, winding a polyurethane elastomer sheet around the outside of the polyurethane hose and fusing and bonding the sheet through hot-melt bonding to form an outer protective layer;

[0023] S8. The airbag of the flat hose supporting structure is deflated, and the wrapped polyurethane hose and the flat hose supporting structure are hoisted as a whole to the preparation station for pulling and demoulding.

[0024] Compared with the prior art, the present invention has the following advantages and effects:

[0025] 1. The present invention provides a winding flat hose manufacturing device and a production method, which realizes the production of flat hoses of more than 30 meters. The pressure bearing capacity of the prepared flat hose is between 2 MPa and 20 MPa, and the caliber is 100-1000 mm;

[0026] 2. The flat hose support structure of the present invention adopts a hollow rigid bracket and a plurality of inflatable airbags are arranged outside the rigid bracket to realize the expansion and fixation of the hose. Compared with the mechanical expansion structure of the prior art, the support structure of the present invention is very light. When the main axis length reaches more than 30 meters, the stress in the middle position is relatively small, which can reduce the extrusion of the elastic body after winding;

[0027] 3. In addition to the traditional winding process, the present invention adds an axial layer structure and process, thereby increasing the axial tensile strength of the flat hose;

[0028] 4. The present invention abandons the vulcanization process of the prior art and instead adopts a prepreg tape integrally formed of a special polyurethane and aramid fiber filament, which is melted and fixed into shape by a hot air gun during the winding process. When producing hoses longer than 30 meters, there is no need to design a large vulcanization tank, and the production length of the hose is not limited by the size of the vulcanization tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of a winding flat hose manufacturing device of the present invention.

[0030] Figure 2 It is a partial enlarged view of a winding flat hose manufacturing device of the present invention.

[0031] Figure 3 Schematic diagram of a flat hose support structure of the present invention.

[0032] Figure 4 It is a partial schematic diagram of the flat hose supporting structure of the present invention.

[0033] Figure 5 Schematic diagram of a rigid support of the present invention.

[0034] Figure 6 Schematic diagram of a rail vehicle of the present invention.

[0035] Figure 7 Schematic diagram of the spirally wound hot air gun of the present invention. DETAILED DESCRIPTION

[0036] In order to elaborate on the technical scheme adopted by the present invention to achieve the predetermined technical purpose, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only partial embodiments of the present invention, rather than all embodiments, and the technical means or technical features in the embodiments of the present invention can be replaced without paying creative work. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0037] like Figure 1 and Figure 2As shown, a winding flat hose manufacturing equipment of the present invention comprises a flat hose supporting structure 1, a rail car 2, an axial laying device 3, an axial laying hot air gun 4, a circumferential spiral winding device 5 and a spiral winding hot air gun 6, the flat hose is sleeved on the flat hose supporting structure 1 and driven by the flat hose supporting structure 1 to rotate circumferentially of the flat hose, the axial laying device 3 is arranged on the upper side of the flat hose supporting structure 1 to perform spiral laying of axial prepreg tape on the flat hose, the axial laying hot air gun 4 is arranged on the axial laying device 3, the circumferential spiral winding device 5 is arranged on one side of the flat hose supporting structure 1 to perform circumferential spiral winding of spiral prepreg tape on the flat hose, the spiral winding hot air gun 6 is arranged on the circumferential spiral winding device 5, the rail car 2 is arranged on one side of the flat hose supporting structure 1, the axial laying device 3 and the circumferential spiral winding device 5 are both arranged on the rail car 2 and driven by the rail car 2 to move axially along the flat hose supporting structure 1.

[0038] like Figure 3 As shown, the flat hose support structure 1 comprises a support structure 7, a frame and a motor 8. The two ends of the support structure 7 are rotatably arranged on the frame and one end of the support structure 7 is connected to the motor 8 and driven by the motor 8. Figure 4 As shown, the support structure 7 includes a main shaft 9, multiple rigid brackets 10 and multiple groups of inflatable airbags 11. The multiple rigid brackets 10 are arranged on the main shaft 9 in sequence. Each group of inflatable airbags 11 is composed of multiple inflatable airbags and each group of inflatable airbags is arranged on the outside of the rigid bracket 10.

[0039] like Figure 5As shown, the rigid support 10 includes two annular end plates 12, multiple spokes 13, multiple support plates 14 and multiple partitions 15. The annular end plate 12 is arranged perpendicular to the axial direction of the main shaft 9, one end of the spoke 13 is fixed to the outside of the main shaft 9, and the other end of the spoke 13 is fixed to the annular end plate 12. Since the length of the main shaft is greater than 30 meters, in order to facilitate processing, in this embodiment, a sleeve 16 is arranged on the outside of the main shaft 9, and the spoke 13 is directly fixed to the outside of the sleeve 16, and then the installed rigid support is sleeved on the outside of the main shaft 9 through the sleeve 16 to complete the installation of the entire rigid support. The spoke 13 is arranged along the radial direction of the annular end plate 12, and the multiple spokes 13 are evenly spaced along the circumference of the annular end plate 12. The partition 15 is arranged along the radial direction of the annular end plate 12, and the two ends of the partition 15 are respectively fixed to the two annular end plates 12, and the multiple partitions 15 are evenly spaced along the circumference of the annular end plate 12. In this embodiment, the partition 15 is arranged in a one-to-one correspondence with the spoke 13. Therefore, in fact, the two ends of the partition 15 are fixed on the side of the spoke 13. The limitation of the installation relationship of the partition 15 in the claims is only the limitation of its relative position, not an absolute installation relationship. Those skilled in the art can make specific adjustments according to actual needs. The support plate 14 is arranged perpendicular to the radial direction of the annular end plate 12. The two ends of the support plate 14 are fixed on the annular end plate 12. The two sides of the support plate 14 are respectively fixed on the lower sides of two adjacent partitions 15. The support plate 14, the partition 15 and the annular end plate 12 form a plurality of inflatable airbag cavities on the surface of the rigid bracket 10. The inflatable airbag is arranged in the inflatable airbag cavity and at least one inflatable airbag is arranged in the inflatable airbag cavity. In this embodiment, two inflatable airbags are arranged side by side in the inflatable airbag cavity, and the support and loading and unloading of the hose are completed by inflation and deflation operations. The support plate 14 is provided with a plurality of round holes, which are evenly distributed on the support plate 14, so that the support plate 14 is designed to be lightweight and the overall weight of the rigid support 10 is reduced. The inflatable airbag is a cylindrical inflatable airbag, which is approximately a cylinder after expansion, and multiple inflatable airbags are used to form multi-point support for the inner side of the hose. Two adjacent rigid supports 10 share a ring-shaped end plate 12, which simplifies the structural complexity of the rigid support 10 and reduces the weight of the rigid support 10.

[0040] The frame includes a motor base 17 and a bearing seat 18. The motor 8 is fixed on the upper side of the motor base 17. One end of the main shaft 9 is connected to the motor 8 through a coupling 19 and is driven to rotate by the motor 8. The other end of the main shaft 9 is rotatably arranged in the bearing seat 18 through a bearing.

[0041] The flat hose support structure 1 also includes a plurality of support structure support mechanisms 20, which are arranged at equal intervals on the lower side of the rigid bracket 10, and each support structure support mechanism 20 includes a support bracket 21 and two pins 22, the two pins 22 are arranged parallel to each other and the two ends of the pins 22 are rotatably arranged on the upper end of the support bracket 21, the pins 22 are arranged perpendicular to the axial direction of the rigid bracket 10 and the upper side of the pins 22 abuts against the lower side of the rigid bracket 10, and a slide rail 23 is arranged on the lower side of the support structure support mechanism 20, and the slide rail 23 is arranged below the rigid bracket 10 in parallel with the axial direction of the rigid bracket 10, and the bottom of the support bracket 21 is slidably arranged on the slide rail 23. The support structure 7 is supported from the lower side by a plurality of support structure support mechanisms 20 to prevent the support structure 7 from sagging in the middle due to a length exceeding 30 meters. The position of the support structure support mechanism 20 can be adjusted according to actual needs through the slide rail 23.

[0042] like Figure 6 As shown, the axial layer laying device 3 comprises an axial layer laying support 24, an axial prepreg tape unwinding disk 25, a plurality of axial prepreg tape tension rollers 26 and an axial prepreg tape pressing roller 27. The axial prepreg tape unwinding disk 25 is rotatably arranged at the upper end of the axial layer laying support 24, the axial prepreg tape pressing roller 27 is rotatably arranged at the lower end of the axial layer laying support 24 and presses against the upper side of the flat hose on the flat hose supporting structure 1, and a plurality of axial prepreg tape tension rollers 26 are arranged on the axial layer laying support 24 between the axial prepreg tape unwinding disk 25 and the axial prepreg tape pressing roller 27. The axial prepreg tape is passively unwound from the axial prepreg tape square reel 25, and then guided by a plurality of axial prepreg tape tension rollers 26 and then wound around the outer side of the flat hose through the axial prepreg tape pressing roller 27.

[0043] The axial ply heat gun 4 is fixed on the axial ply bracket 24 through the axial ply heat gun bracket, and the gun head of the axial ply heat gun 4 faces the axial prepreg tape on the lower side of the axial prepreg tape pressure roller 27 .

[0044] like Figure 6 and Figure 7As shown, the circumferential spiral winding device 5 includes a plurality of groups of circumferential spiral winding mechanisms, and the plurality of groups of circumferential spiral winding mechanisms are arranged in parallel in the rail vehicle 2, and each group of circumferential spiral winding mechanisms includes a spiral prepreg unwinding disk 28, a spiral prepreg unwinding bracket 29, a plurality of spiral prepreg tension rollers 30, a spiral prepreg tension roller bracket 31, a spiral prepreg pressure roller 32 and a spiral prepreg pressure roller bracket 33. The spiral prepreg unwinding disk 28 is rotatably arranged on the spiral prepreg unwinding bracket 29, a plurality of spiral prepreg tension rollers 30 are rotatably arranged on the spiral prepreg tension roller bracket 31, the spiral prepreg unwinding bracket 29 and the spiral prepreg tension roller bracket 31 are fixed on the rail vehicle 2, the spiral prepreg pressure roller 32 is rotatably arranged on the spiral prepreg pressure roller bracket 33, and the spiral prepreg pressure roller bracket 33 is fixedly connected to the axial layer bracket 24.

[0045] The spirally wound hot air gun 6 is fixed on the spiral prepreg tape pressure roller bracket 33 and the gun head of the spirally wound hot air gun 6 faces the spiral prepreg tape on the lower side of the spiral prepreg tape pressure roller 32. The number of the spirally wound hot air guns 6 is equal to the number of the annular spiral winding mechanisms and the spirally wound hot air guns 6 are arranged one by one on each group of the annular spiral winding mechanisms.

[0046] A method for producing a wound flat hose comprises the following steps:

[0047] S1. Prepare an axial prepreg tape, select axial high-strength aramid fiber, the strength of the axial high-strength aramid fiber is 20 cm / dtex, the fiber linear density of the axial high-strength aramid fiber is 17000-19000 denier, and the single-strand breaking force of the axial high-strength aramid fiber is 3800-4200 Newton. The axial high-strength aramid fiber is prepared into an axial prepreg tape by a unidirectional prepreg tape process. The axial prepreg tape has a width of 90-110 mm. The axial prepreg tape contains 52-56 axial high-strength aramid fibers and is compounded into a whole by a polyurethane elastomer.

[0048] S2. Prepare a spiral prepreg tape, select spiral high-strength aramid fiber, the strength of the spiral high-strength aramid fiber is 20 cm / dtex, the fiber linear density of the axial high-strength aramid fiber is 1000-23000 denier, and the single-strand breaking force of the axial high-strength aramid fiber is 4500-4800 Newton. The spiral high-strength aramid fiber is prepared into a spiral prepreg tape by a unidirectional prepreg tape process. The width of the spiral prepreg tape is 90-110 mm. The spiral prepreg tape contains 43-47 axial high-strength aramid fibers and is compounded into a spiral prepreg tape as a whole by a polyurethane elastomer.

[0049] Of course, it should be noted that the present invention can also directly use high-strength aramid fiber bundles with fixed widths for winding without being pre-made into prepreg tapes.

[0050] Moreover, the polyurethane elastomer can be replaced by other wear-resistant materials, or the process of spraying polyurea can be selected.

[0051] S3. After the polyurethane hose with an inner diameter of 380-420 mm and a thickness of 2-4 mm is extruded, it is inserted into the flat hose support structure, and the airbag is inflated to expand and fix the polyurethane hose.

[0052] S4. The axial prepreg tape is spirally laid on the outside of the polyurethane hose through the axial prepreg tape laying device. The number of axial prepreg tapes laid in a single layer is 10-14, and a 7-8 mm gap is reserved between each axial prepreg tape for heating and welding polyurethane overflow. The total tension of the axial prepreg tape is 264 tons, which is 1.3 times the safety factor of the designed laying traction tension. The designed laying speed is 0.5 m / min for a single axial prepreg tape.

[0053] S5. Wrap the spiral prepreg tape around the outside of the polyurethane hose through a circumferential spiral winding device. The number of spiral prepreg tape winding layers is 2, and the number of spiral prepreg tape winding roots in each layer is 3-5. The reserved gap between each spiral prepreg tape is 3-5 mm for heating and welding polyurethane overflow. The winding angle of the spiral prepreg tape is 76-77 degrees, and the thickness of a single layer of spiral prepreg tape is 2.4-2.5 mm. The circumferential burst strength of the spiral prepreg tape winding is 15-17 MPa, the designed spiral winding speed is 3 rpm, and the winding speed is 1 m / min.

[0054] S6. During the axial prepreg laying and spiral prepreg winding processes, the prepregs are heated and melted by an electric hot air gun, and then pressed and fitted by corresponding pressing rollers. The hot melting temperature of the electric hot air gun is 150-170°C.

[0055] S7. Wrap a polyurethane elastomer sheet around the outside of the polyurethane hose and fuse them together by hot-melt bonding to form an outer protective layer.

[0056] S8, the airbag of the flat hose support structure is deflated, and the wrapped polyurethane hose and the flat hose support structure are hoisted as a whole to the preparation station for pulling and demoulding. While demoulding, the next flat hose is installed on the other side.

[0057] The present invention provides a winding flat hose manufacturing device and a production method, which realizes the production of flat hoses longer than 30 meters. The prepared flat hoses have a pressure bearing capacity between 2 MPa and 20 MPa, and a caliber of 100-1000 mm. The flat hose support structure of the present invention adopts a hollow rigid bracket and a plurality of inflatable airbags are arranged on the outside of the rigid bracket to achieve expansion and fixation of the hose. Compared with the mechanical expansion structure of the prior art, the support structure of the present invention is very light. When the main axis length reaches more than 30 meters, the stress in the middle position is also relatively small, which can reduce the extrusion of the elastic body after winding. In addition to the traditional winding process, the present invention adds an axial lamination structure and process, thereby increasing the axial tensile strength of the flat hose. The present invention abandons the vulcanization process of the prior art, and instead adopts a special prepreg tape integrally formed of polyurethane and aramid fiber filaments, which is melted and fixed by a hot air gun during the winding process. When producing hoses longer than 30 meters, there is no need to design a large vulcanization tank, and the production length of the hose is not limited by the size of the vulcanization tank.

[0058] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement made to the above embodiments without departing from the content of the technical solution of the present invention, based on the technical essence of the present invention, within the spirit and principles of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims

1. A winding flat hose manufacturing device, characterized in that: It comprises a flat hose support structure, a rail car, an axial laying device, an axial laying hot air gun, a circumferential spiral winding device and a spiral winding hot air gun, the flat hose is sleeved on the flat hose support structure and driven by the flat hose support structure to rotate circumferentially along the flat hose, the axial laying device is arranged on the upper side of the flat hose support structure to perform spiral laying of axial prepreg tape on the flat hose, the axial laying hot air gun is arranged on the axial laying device, the circumferential spiral winding device is arranged on one side of the flat hose support structure to perform circumferential spiral winding of the spiral prepreg tape on the flat hose, the spiral winding hot air gun is arranged on the circumferential spiral winding device, the rail car is arranged on one side of the flat hose support structure, the axial laying device and the circumferential spiral winding device are both arranged on the rail car and driven by the rail car to move axially along the flat hose support structure, the axial prepreg tape is laid and the spiral prepreg tape is wound through the electric hot air gun for heating and melting, and then the prepreg tape is pressed and fitted through the corresponding pressing roller; The axial layer laying device comprises an axial layer laying support, an axial prepreg tape unwinding disk, a plurality of axial prepreg tape tension rollers and an axial prepreg tape pressure roller, wherein the axial prepreg tape unwinding disk is rotatably arranged at the upper end of the axial layer laying support, the axial prepreg tape pressure roller is rotatably arranged at the lower end of the axial layer laying support and presses against the upper side of the flat hose on the flat hose support structure, and the plurality of axial prepreg tape tension rollers are arranged on the axial layer laying support between the axial prepreg tape unwinding disk and the axial prepreg tape pressure roller; The axial layer hot air gun is fixed on the axial layer bracket through the axial layer hot air gun bracket, and the axial layer hot air gun head faces the axial prepreg tape on the lower side of the axial prepreg tape pressure roller; The circumferential spiral winding device comprises a plurality of groups of circumferential spiral winding mechanisms, which are arranged in parallel in the rail car, each group of circumferential spiral winding mechanisms comprises a spiral prepreg unwinding disk, a spiral prepreg unwinding bracket, a plurality of spiral prepreg tension rollers, a spiral prepreg tension roller bracket, a spiral prepreg pressure roller and a spiral prepreg pressure roller bracket, the spiral prepreg unwinding disk is rotatably arranged on the spiral prepreg unwinding bracket, a plurality of spiral prepreg tension rollers are rotatably arranged on the spiral prepreg tension roller bracket, the spiral prepreg unwinding bracket and the spiral prepreg tension roller bracket are fixed on the rail car, the spiral prepreg pressure roller is rotatably arranged on the spiral prepreg pressure roller bracket, and the spiral prepreg pressure roller bracket is fixedly connected to the axial layer bracket; The spiral winding hot air gun is fixed on the spiral prepreg tape pressure roller support and the head of the spiral winding hot air gun faces the spiral prepreg tape on the lower side of the spiral prepreg tape pressure roller. The number of the spiral winding hot air guns is equal to the number of the circumferential spiral winding mechanisms and the spiral winding hot air guns are arranged one by one on each group of circumferential spiral winding mechanisms. The flat hose support structure comprises a support structure, a frame and a motor, the two ends of the support structure are rotatably arranged on the frame and one end of the support structure is connected to the motor and driven by the motor, the support structure comprises a main shaft, a plurality of rigid brackets and a plurality of groups of inflatable airbags, the plurality of rigid brackets are sequentially arranged on the main shaft, each group of inflatable airbags is composed of a plurality of inflatable airbags and each group of inflatable airbags is arranged on the outside of the rigid bracket; The rigid support comprises two annular end plates, multiple spoke plates, multiple support plates and multiple partitions. The annular end plate is arranged perpendicular to the axial direction of the main shaft, one end of the spoke plate is fixed to the outside of the main shaft, and the other end of the spoke plate is fixed to the annular end plate, the spoke plate is arranged along the radial direction of the annular end plate and the multiple spoke plates are distributed at equal intervals along the circumference of the annular end plate, the partition plate is arranged along the radial direction of the annular end plate and the two ends of the partition plate are respectively fixed to the two annular end plates, and the multiple partitions are distributed at equal intervals along the circumference of the annular end plates, the support plate is arranged perpendicular to the radial direction of the annular end plate, the two ends of the support plate are fixed to the annular end plate, and the two sides of the support plate are respectively fixed to the lower sides of two adjacent partitions, the support plate, the partition plate and the annular end plate form multiple inflatable airbag cavities on the surface of the rigid support, the inflatable airbag is arranged in the inflatable airbag cavity and at least one inflatable airbag is arranged in the inflatable airbag cavity.

2. The winding flat hose manufacturing equipment according to claim 1, characterized in that: The frame includes a motor base and a bearing seat. The motor is fixed on the upper side of the motor base. One end of the main shaft is connected to the motor through a coupling and is driven to rotate by the motor. The other end of the main shaft is rotatably arranged in the bearing seat through a bearing.

3. The winding flat hose manufacturing equipment according to claim 1, characterized in that: The flat hose supporting structure also includes a plurality of supporting structure supporting mechanisms, which are arranged at equal intervals on the lower side of the rigid bracket, and each supporting structure supporting mechanism includes a supporting bracket and two pins, the two pins are arranged parallel to each other and both ends of the pins are rotatably arranged on the upper end of the supporting bracket, the pins are arranged perpendicular to the axial direction of the rigid bracket and the upper side of the pins abuts against the lower side of the rigid bracket, a slide rail is arranged on the lower side of the supporting structure supporting mechanism, the slide rail is arranged below the rigid bracket parallel to the axial direction of the rigid bracket, and the bottom of the supporting bracket is slidably arranged on the slide rail.

4. A method for producing a wound flat hose based on the wound flat hose manufacturing equipment according to any one of claims 1 to 3, characterized in that The following steps are involved: S1. Prepare an axial prepreg tape, select axial high-strength aramid fiber, the strength of the axial high-strength aramid fiber is 20 centinewons / dtex, the fiber linear density of the axial high-strength aramid fiber is 17000-19000 deniers, and the fiber single-strand tensile strength of the axial high-strength aramid fiber is 3800-4200 Newtons, and the axial high-strength aramid fiber is prepared into an axial prepreg tape by a unidirectional prepreg tape process, the axial prepreg tape has a width of 90-110 mm, and the axial prepreg tape contains 52-56 axial high-strength aramid fibers and is composited into an integral axial prepreg tape by a polyurethane elastomer; S2, preparing a spiral prepreg tape, selecting a spiral high-strength aramid fiber, the strength of the spiral high-strength aramid fiber is 20 centinewons / dtex, the fiber linear density of the spiral high-strength aramid fiber is 1000-23000 deniers, and the fiber single-strand breaking force of the spiral high-strength aramid fiber is 4500-4800 Newtons, and the spiral high-strength aramid fiber is prepared into a spiral prepreg tape by a unidirectional prepreg tape process, the width of the spiral prepreg tape is 90-110 mm, and the spiral prepreg tape contains 43-47 spiral high-strength aramid fibers and is compounded into a spiral prepreg tape as a whole by a polyurethane elastomer; S3. After the polyurethane hose with an inner diameter of 380-420 mm and a thickness of 2-4 mm is extruded and processed, it is inserted into the flat hose support structure, and the airbag is inflated to expand and fix the polyurethane hose; S4. Spirally lay the axial prepreg tape on the outside of the polyurethane hose through the axial prepreg tape laying device. The number of axial prepreg tapes laid in a single layer is 10-14. A gap of 7-8 mm is reserved between each axial prepreg tape for overflow of the molten polyurethane. S5. Wrap the spiral prepreg tape around the outside of the polyurethane hose through a circumferential spiral winding device. The number of spiral prepreg tape winding layers is 2. The number of spiral prepreg tape winding roots in each layer is 3-5. The reserved gap between each spiral prepreg tape is 3-5 mm for the overflow of the molten polyurethane. The winding angle of the spiral prepreg tape is 76-77 degrees. The thickness of a single layer of spiral prepreg tape is 2.4-2.5 mm. S6, during the axial prepreg layering and spiral prepreg winding process, the prepreg is heated and melted by an electric hot air gun, and then the prepreg is pressed and fitted by the corresponding pressing roller. The hot melting temperature of the electric hot air gun is 150-170°C; S7, winding a polyurethane elastomer sheet around the outside of the polyurethane hose and fusing and bonding the sheet through hot-melt bonding to form an outer protective layer; S8. The airbag of the flat hose supporting structure is deflated, and the wrapped polyurethane hose and the flat hose supporting structure are hoisted as a whole to the preparation station for pulling and demoulding.

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