阅读说明：本技术 一种钢丝缠绕液压胶管无芯法连续化制造的方法及设备 (Method and equipment for continuously manufacturing steel wire wound hydraulic rubber hose by coreless method ) 是由 吴振亭 张富宣 岳斌斌 阎科 李攀辉 于 2021-09-22 设计创作，主要内容包括：本发明涉及一种钢丝缠绕液压胶管无芯法连续化制造的方法及设备,其包括：内胶管挤出：给定型芯棒上涂覆油液,使内胶管与定型芯棒之间形成油膜,挤出高温橡胶使其包裹在定型芯棒外形成内胶管；内胶管水冷：对挤出的内胶管进行水冷,温度降至50℃以下；内胶管冷冻：对水冷后的内胶管进行冷冻,使内胶管温度降至-30℃至-40℃之间；内胶管缠绕钢丝层：对冷冻后的内胶管缠绕两层钢丝层；内胶管脱芯：对缠绕钢丝层的内胶管进行牵引,使胶管从脱管芯棒上脱离；对脱芯后的内胶管增加保护层及对增加保护层的内胶管进行收卷。本发明能够实现钢丝缠绕液压胶管无芯法的连续化生产,降低生产成本,提高生产效率及胶管的质量,值得推广。(The invention relates to a method and equipment for continuously manufacturing a steel wire wound hydraulic rubber hose by a coreless method, which comprises the following steps: extruding an inner rubber tube: coating oil on a given core rod to form an oil film between the inner rubber tube and the shaping core rod, and extruding high-temperature rubber to wrap the inner rubber tube outside the shaping core rod to form the inner rubber tube; water cooling of the inner rubber tube: cooling the extruded inner rubber tube with water, and reducing the temperature to below 50 ℃; freezing an inner rubber tube: freezing the water-cooled inner rubber tube to reduce the temperature of the inner rubber tube to between minus 30 ℃ and minus 40 ℃; winding a steel wire layer on the inner rubber pipe: winding two steel wire layers on the frozen inner rubber tube; removing the core of the inner rubber tube: drawing the inner rubber tube wound with the steel wire layer to separate the rubber tube from the tube-removing core rod; and adding a protective layer to the inner rubber tube after core stripping and rolling the inner rubber tube added with the protective layer. The invention can realize the continuous production of the steel wire wound hydraulic rubber hose coreless method, reduce the production cost, improve the production efficiency and the quality of the rubber hose, and is worthy of popularization.)

1. A steel wire winding hydraulic rubber tube coreless method continuous manufacturing equipment is characterized by comprising the following steps:

the fixed core die (7) is arranged in a cavity of an adjusting mouth (8) of the rubber extruder (1), one end, close to an outlet of the adjusting mouth (8), of the fixed core die (7) is connected with a shaping core rod (9), and the other end of the fixed core die is detachably connected with a transition core rod (15); an annular groove is formed between the shaping core rod (9) and the inner wall of the cavity of the adjusting die (6);

the air flow channel (5) and the lubricating oil flow channel (6) are arranged in the fixed core mould (7) along the length direction of the fixed core mould (7), outlets of the air flow channel (5) and the lubricating oil flow channel (6) are communicated with one end, close to the transition core rod (15), of the annular groove, an inlet of the air flow channel (5) is connected with an air pump (2), and an inlet of the lubricating oil flow channel (6) is connected with an oil pump (3);

the water cooling device I (11) and the refrigerating device (12) are sequentially arranged above the transition core rod (15) along the extrusion direction;

the winding core rod (16) is connected to one end, away from the refrigerating device (12), of the transition core rod (15), one end, away from the transition core rod (15), of the winding core rod (16) is connected with a pipe removal core rod (19), a plurality of steel wire winding machines are sequentially arranged on the winding core rod (16), and a pair roller conveying mechanism used for drawing the rubber pipe after the steel wire layer is wound is arranged on the pipe removal core rod (19);

still include heating device (22), outer extruder (23) of gluing, plastics extruder (24), water cooling plant II (25) and coiling mechanism (28), after setting gradually pair roller conveying mechanism, heating device (22) are used for heating the steel wire layer on the internal rubber pipe, outer extruder (23), plastics extruder (24) are used for wrapping up in proper order and handing over layer and plastic layer to the steel wire layer after the heating, coiling mechanism (28) are used for handing over the rubber tube of layer and plastic layer outside the parcel.

2. The coreless continuous manufacturing apparatus of a wire-wound hydraulic hose according to claim 1, wherein the water cooling apparatus I (11) and the water cooling apparatus II (25) have the same structure, and the water cooling apparatus I (11) includes: the water supply pump, the access connection of water supply pump has the cold water machine, the exit linkage of water supply pump has a plurality of shower heads that are used for spraying the rubber tube, the shower head below is provided with the collecting tank.

3. The coreless continuous manufacturing equipment for the steel wire wound hydraulic rubber hose according to claim 1, wherein the freezing device (12) comprises a freezing tunnel (13) penetrating through the transition core rod (15), the freezing tunnel (13) is connected with a cascade refrigerator through a pipeline, and a regulating valve (14) is arranged on the pipeline.

4. The apparatus for continuously manufacturing a wire-wound hydraulic hose without a core according to claim 1, wherein the pair roller conveying mechanism comprises: the conveying belts (20) are symmetrically distributed on two sides of the pipe-removing core rod (19), the conveying directions of the two conveying belts (20) are opposite, and the belt bodies (20) of the two conveying belts (20) are in contact with the steel wire layers on the inner rubber tube.

5. The continuous manufacturing equipment for the coreless wire wound hydraulic hose according to claim 1, further comprising an air drying device arranged behind the water cooling device II (25) in the hose drawing direction, wherein the air drying device comprises an air knife (27) and a fan (26), an outlet of the fan (26) is communicated with an inlet of the air knife (27), and an outlet of the air knife (27) faces the hose.

6. The method for continuously manufacturing the steel wire wound hydraulic hose without the core according to any one of claims 1 to 5, wherein the method comprises the following steps:

extruding an inner rubber tube: coating oil liquid on the shaping core rod (9) to form an oil film between the inner rubber tube and the shaping core rod (9), and extruding high-temperature rubber to wrap the inner rubber tube outside the shaping core rod (9) to form the inner rubber tube;

water cooling of the inner rubber tube: cooling the extruded inner rubber tube with water, and reducing the temperature to below 50 ℃;

freezing an inner rubber tube: freezing the water-cooled inner rubber tube to reduce the temperature of the inner rubber tube to between minus 30 ℃ and minus 40 ℃;

winding a steel wire layer on the inner rubber pipe: winding two steel wire layers on the frozen inner rubber tube;

removing the core of the inner rubber tube: the inner rubber tube wound with the steel wire layer is pulled to separate the rubber tube from the tube-removing core rod (19);

and adding a protective layer to the inner rubber tube after core stripping and rolling the inner rubber tube added with the protective layer.

7. The method for coreless continuous manufacture of a wire-wound hydraulic hose according to claim 6, wherein the steps of adding a protective layer to the inner hose and winding the inner hose with the protective layer added thereto include:

heating the steel wire layer on the inner rubber pipe at 80-150 ℃ for 40-60 seconds until the temperature of the steel wire layer on the inner rubber pipe reaches 30-35 ℃;

wrapping a layer of outer glue outside the steel wire layer on the heated inner rubber pipe to form an outer rubber layer of the rubber pipe;

wrapping a layer of plastic outside the rubber pipe to form a rubber pipe plastic layer;

cooling the rubber tube coated with the plastic layer to reduce the temperature of the surface of the plastic layer to 40-50 ℃;

air-drying the residual moisture on the surface of the rubber tube plastic layer;

and rolling the air-dried rubber tube.

8. The method for coreless continuous manufacture of wire-wound hydraulic hoses according to claim 6, wherein the step of winding the inner hose after freezing with two layers of wire comprises:

winding a first layer of steel wires on the frozen inner rubber hose;

winding a second layer of steel wires on the basis of the first layer of steel wires, wherein the winding directions of the first layer of steel wires and the second layer of steel wires are opposite;

when the number of layers of the wound steel wires is 2, the winding angles of the first layer of steel wires and the second layer of steel wires are 54.2 degrees and 55.2 degrees respectively; when the number of layers of the wound steel wires is 4, the winding angles of the steel wires at the 1 st layer to the 4 th layer are respectively 53.7 degrees, 54.2 degrees, 55.2 degrees and 55.7 degrees.

9. The method for continuously manufacturing the wire-wound hydraulic hose without the core according to claim 6, wherein the step of water-cooling the inner hose further comprises the steps of:

and water cooling the inner rubber pipe by a cold water curtain at the temperature of 5-10 ℃ for 60-90 seconds.

10. The method for coreless continuous manufacture of a wire-wound hydraulic hose according to claim 6, wherein the inner hose extrusion step further includes:

and gas with the pressure of 0.11MPa-0.15MPa is filled between the inner wall of the inner rubber tube and the outer cylindrical surface of the shaping core rod (9).

Technical Field

The invention relates to the field of hydraulic rubber hose production devices, in particular to a method and equipment for continuously manufacturing a steel wire wound hydraulic rubber hose by a coreless method.

Background

The steel wire wound hydraulic rubber pipe (hereinafter referred to as rubber pipe) is widely applied to hydraulic systems of various engineering mechanical equipment and is an important element for transmitting high-pressure fluid medium and energy. The structure of the steel wire wound hydraulic rubber pipe mainly comprises an inner rubber pipe, a steel wire framework layer (hereinafter referred to as a steel wire layer) and an outer rubber layer, wherein the inner rubber pipe plays a role of isolating a medium, the steel wire framework layer plays a role of bearing, and the outer rubber layer plays a role of protecting the framework layer from abrasion and aging.

At present, the production process of the steel wire wound hydraulic rubber pipe mainly comprises a hard core method and a soft core method. The hard core method is a method for producing the rubber pipe by using a steel core as a core die in the manufacturing process of the rubber pipe, the steel core used in the process is stored in a straight strip shape and cannot be bent, and the length of the hard core is limited to a certain extent, so that the maximum length of the steel wire wound on the hydraulic rubber pipe produced by the method is about 200 meters generally.

The soft core method is a method for producing the rubber tube by using a soft nylon material as a core die in the manufacturing process of the rubber tube, and the soft core used in the process can be bent, rolled and stored, so that the maximum length of the steel wire wound hydraulic rubber tube produced by the method is about 500 meters generally, and meanwhile, the soft core has the defects of loss, deformation and the like in the using process.

No matter the soft core method or the hard core method, the existing production process of the steel wire winding hydraulic rubber pipe mainly has the following problems: the supporting function of the core mould as the rubber pipe forming almost accompanies each procedure of rubber pipe production, so that each procedure is mutually independent and the production is carried out intermittently, therefore, the common defects are that the process chain of the rubber pipe is prolonged, the working time of product manufacturing and the cost of materials are increased, and the semi-finished products of each production procedure need to be rolled and stored, thereby the production efficiency is improved. The scheme provides a continuous manufacturing method and equipment for a steel wire wound hydraulic rubber hose coreless method to solve the problems.

Disclosure of Invention

The invention aims to provide a continuous and automatic manufacturing method and equipment of a steel wire wound hydraulic rubber tube coreless method, which has the principle that a plurality of sections of metal core rods connected end to end are used as core moulds of an extrusion process, a water cooling process, a freezing process, a steel wire layer winding process and a traction decoring process of an inner rubber tube to play a role of supporting the inner rubber tube, so that the inner rubber tube slides to different stations along the metal core rods to complete different production processes, thereby solving the problems of long processing time and incapability of continuous production in the prior art.

The invention provides a continuous manufacturing device of a steel wire wound hydraulic rubber hose coreless method, which comprises the following steps:

the fixed core mold is arranged in a cavity of an adjusting mouth shape of the rubber extruder, one end of the fixed core mold, which is close to an outlet of the adjusting mouth shape, is connected with a shaping core rod, and the other end of the fixed core mold is detachably connected with a transition core rod; an annular groove is formed between the shaping core rod and the inner wall of the cavity of the adjusting mouth;

the air flow channel and the lubricating oil flow channel are arranged in the fixed core die along the length direction of the fixed core die, outlets of the air flow channel and the lubricating oil flow channel are communicated with one end of the annular groove close to the transition core rod, an inlet of the air flow channel is connected with an air pump, and an inlet of the lubricating oil flow channel is connected with an oil pump;

the water cooling device I and the refrigerating device are sequentially arranged above the transition core rod along the extrusion direction;

the winding mandrel is connected to one end, away from the refrigerating device, of the transition mandrel, one end, away from the transition mandrel, of the winding mandrel is connected with a pipe-removing mandrel, a plurality of steel wire winding machines are sequentially arranged on the winding mandrel, and a pair-roller conveying mechanism used for drawing the rubber pipe after the steel wire layer is wound is arranged on the pipe-removing mandrel;

the plastic pipe winding machine is characterized by further comprising a heating device, an outer rubber extruder, a plastic extruder, a water cooling device II and a winding device, wherein after the pair-roller conveying mechanism is sequentially arranged, the heating device is used for heating a steel wire layer on the inner rubber pipe, the outer rubber extruder and the plastic extruder are used for sequentially wrapping an outer cross layer and a plastic layer on the heated steel wire layer, and the winding device is used for winding the rubber pipe wrapping the outer cross layer and the plastic layer.

Preferably, the water cooling device I and the water cooling device II have the same structure, and the water cooling device I includes: the water supply pump, the access connection of water supply pump has the cold water machine, the exit linkage of water supply pump has a plurality of shower heads that are used for spraying the rubber tube, the shower head below is provided with the collecting tank.

Preferably, the freezing device comprises a freezing tunnel penetrating through the transition core rod, the freezing tunnel is connected with a cascade refrigerator through a pipeline, and the pipeline is provided with a regulating valve.

Preferably, the counter roller conveying mechanism includes: the conveying directions of the two conveying belts are opposite, and the belt bodies of the two conveying belts are in contact with the steel wire layers on the inner rubber tube.

Preferably, still include the air-dry device of setting after water cooling plant II along the rubber tube direction of traction, air-dry device includes air knife and fan, the export of fan and the import intercommunication of air knife, the export of air knife is towards the rubber tube.

The invention also discloses a method for continuously manufacturing the steel wire wound hydraulic rubber hose by a coreless method, which comprises the following steps:

extruding an inner rubber tube: coating oil on a given core rod to form an oil film between the inner rubber tube and the shaping core rod, and extruding high-temperature rubber to wrap the inner rubber tube outside the shaping core rod to form the inner rubber tube;

water cooling of the inner rubber tube: cooling the extruded inner rubber tube with water, and reducing the temperature to below 50 ℃;

freezing an inner rubber tube: freezing the water-cooled inner rubber tube to reduce the temperature of the inner rubber tube to between minus 30 ℃ and minus 40 ℃;

winding a steel wire layer on the inner rubber pipe: winding two steel wire layers on the frozen inner rubber tube;

removing the core of the inner rubber tube: drawing the inner rubber tube wound with the steel wire layer to separate the rubber tube from the tube-removing core rod;

the method also comprises the steps of adding a protective layer to the inner rubber tube after core stripping and rolling the inner rubber tube added with the protective layer.

Preferably, the step of increasing the protective layer and rolling the inner rubber tube that increases the protective layer includes:

heating the steel wire layer on the inner rubber pipe at 80-150 ℃ for 40-60 seconds until the temperature of the steel wire layer on the inner rubber pipe reaches 30-35 ℃;

wrapping a layer of outer glue outside the steel wire layer on the heated inner rubber pipe to form an outer rubber layer of the rubber pipe;

wrapping a layer of plastic outside the rubber pipe to form a rubber pipe plastic layer;

cooling the rubber tube coated with the plastic layer to reduce the temperature of the surface of the plastic layer to 40-50 ℃;

air-drying the residual moisture on the surface of the rubber tube plastic layer;

and rolling the air-dried rubber tube.

Preferably, the step of winding two steel wire layers on the frozen inner rubber tube comprises the following steps:

winding a first layer of steel wires on the frozen inner rubber hose;

winding a second layer of steel wires on the basis of the first layer of steel wires, wherein the winding directions of the first layer of steel wires and the second layer of steel wires are opposite;

when the number of layers of the wound steel wires is 2, the winding angles of the first layer of steel wires and the second layer of steel wires are 54.2 degrees and 55.2 degrees respectively; when the number of layers of the wound steel wires is 4, the winding angles of the steel wires at the 1 st layer to the 4 th layer are respectively 53.7 degrees, 54.2 degrees, 55.2 degrees and 55.7 degrees.

Preferably, the step of water-cooling the inner rubber tube further comprises:

and water cooling the inner rubber pipe by a cold water curtain at the temperature of 5-10 ℃ for 60-90 seconds.

Preferably, the inner rubber tube extruding step further comprises:

and gas with the pressure of 0.11MPa-0.15MPa is filled between the inner wall of the inner rubber tube and the outer cylindrical surface of the shaping core rod.

The invention has the beneficial effects that:

1. the method and the equipment for continuously manufacturing the steel wire wound hydraulic rubber hose by the coreless method can be popularized and used in a large scale.

2. According to the method and the equipment for continuously manufacturing the steel wire wound hydraulic rubber tube by the coreless method, the oil is injected into the lubricating oil flow passage through the oil pump, so that an oil film is formed between the inner rubber tube and the shaping core rod, the high-temperature rubber extruded by the extruder is prevented from being adhered to the shaping core rod, the inner rubber tube is hardened through the water cooling and freezing processes, the inner rubber tube is continuously pushed by the rubber extruded by the extruder to move until the inner rubber tube wound with the metal layer is pulled by the roller conveying mechanism to complete depoling, and therefore the coreless method and the automatic production for the subsequent rubber tube production are realized, the production cost is reduced, and the production efficiency is improved.

3. The invention provides a method and equipment for continuously manufacturing a steel wire wound hydraulic rubber tube by a coreless method, wherein an oil pump is used for filling oil into a lubricating oil flow passage, the lubricating oil in the flow passage enters an annular groove under pressure, the lubricating oil in the annular groove is contacted with the inner wall of an inner rubber layer which is extruded to flow, so that a layer of lubricating oil is uniformly coated on the inner wall of the inner rubber layer in the circumferential direction, the inner rubber layer is separated from a sizing core rod by the oil film, the inner rubber layer can move on the sizing core rod and a transition core rod by the aid of the oil film with the minimum friction force, the influence of the friction force of a metal core rod on the shape of the rubber tube is reduced, meanwhile, a certain pressure is provided for the inner rubber tube on the sizing core rod by combining gas filled by an air pump, the inner rubber tube is ensured to be in a circular shape, the processing quality of the rubber tube is higher, the practicability is strong, and the equipment is worthy of popularization.

Drawings

FIG. 1 is a flow chart of a coreless continuous manufacturing method of the present invention;

FIG. 2 is a schematic structural view of embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of the general structure of the present invention

FIG. 4 is an enlarged view of the internal structure of the rubber extruder head in the present invention;

FIG. 5 is a schematic view of the structure of each mandrel of the present invention;

Detailed Description

An embodiment of the present invention will be described in detail with reference to fig. 1 to 5, but it should be understood that the scope of the present invention is not limited by the embodiment.

Example 1

As shown in fig. 1, 2 and 3, an embodiment of the present invention provides a continuous manufacturing apparatus for a wire-wound hydraulic hose coreless method, including: the fixed core mould 7 is arranged in the cavity of the adjusting mouth 8 of the rubber extruder 1, one end of the fixed core mould 7 close to the outlet of the adjusting mouth 8 is connected with a shaping core rod 9, and the other end of the fixed core mould 7 is detachably connected with a transition core rod 15; an annular groove is formed between the shaping core rod 9 and the inner wall of the cavity of the adjusting die 6; a lubricating oil flow passage 6 and an air flow passage 5 are arranged inside the fixed core mould 7 along the length direction of the fixed core mould 7, outlets of the lubricating oil flow passage 6 and the air flow passage 5 are communicated with one end of the annular groove close to the transition core rod 15, wherein an inlet of the lubricating oil flow passage 6 is communicated with an outlet of the oil pump 3, and an inlet of the air flow passage 5 is communicated with an outlet of the air pump 2; a water cooling device I11 and a freezing device 12 are sequentially arranged above the transition mandrel 15 along the extrusion direction, as shown in fig. 4, one end of the transition mandrel 15 away from the freezing device 12 is connected with a winding mandrel 16, one end of the winding mandrel 16 away from the transition mandrel 15 is connected with an off-pipe mandrel 19, a plurality of steel wire winding machines are sequentially arranged on the winding mandrel 16, a pair-roller conveying mechanism is arranged on the off-pipe mandrel 19, when 2 steel wire layers need to be wound, when 2 steel wire winding machines are selected, the 2 steel wire layers correspond to the two winding mandrels 16, namely, the winding mandrel I16A and the winding mandrel II 16B, and the winding mandrel I16A and the winding mandrel II 16B correspondingly wind one steel wire layer.

Wherein, gas with the pressure of 0.11MPa to 0.15MPa is filled into the gap between the inner wall of the inner rubber layer and the transition core rod 15 from the outlet 10 of the air flow passage 5 through the air flow passage 5 by the air pump 2, so as to ensure that the extruded inner rubber tube is cylindrical in the cooling process; the annular groove is filled with lubricating oil with the pressure of 1.2MPa to 1.4MPa through the lubricating oil flow passage 6 by the oil pump 3, and the purpose is to generate an oil film between the inner wall surface of the inner rubber hose and the outer cylindrical surface of the shaping core rod 9, so that the inner rubber hose and the transition core rod 15 are automatically separated, and the high-temperature rubber is prevented from being adhered to the transition core rod 15.

In order to enable the whole processing process to be carried out continuously, the continuous processing device further comprises a heating device 22, an outer rubber extruder 23, a plastic extruder 24, a water cooling device II25 and a winding device 28, after a pair-roller conveying mechanism is sequentially arranged, the heating device 22 is used for heating a steel wire layer on an inner rubber pipe, the outer rubber extruder 23 and the plastic extruder 24 are used for sequentially wrapping an outer cross layer and a plastic layer on the heated steel wire layer, the winding device 28 is used for winding the rubber pipe wrapping the outer cross layer and the plastic layer, the winding device 28 adopts a winding roller to automatically curl the rubber pipe to the roller for storage, the heating device 22 adopts a tunnel heater, the rubber pipe after core removal only needs to pass through the tunnel heater at a constant speed for heating, the internal temperature of the heated hydrazine is kept between 80 ℃ and 150 ℃, and the heating time can be adjusted according to the moving speed of the rubber pipe.

Wherein, water cooling plant I11 is the same with water cooling plant II25 structure, and water cooling plant I11 includes: the utility model discloses a rubber tube spraying water cooling device, including water supply pump, water supply pump's access connection has the cold water machine, water supply pump's exit linkage has a plurality of shower heads that are used for spraying the rubber tube, the shower head below is provided with the collecting tank, and wherein, water cooling plant I11 also can adopt cold water tank 25 to carry out the water-cooling to the interior rubber tube of extruding, only need follow cold water tank 25 with interior rubber tube and can cool off.

The freezing device 12 comprises a freezing tunnel 13 penetrating through a transition core rod 15, the freezing tunnel 13 is connected with a cascade refrigerator through a pipeline, and a regulating valve 14 is arranged on the pipeline.

Wherein, pair roller conveying mechanism includes: the two conveying belts 20 are symmetrically distributed on two sides of the pipe-removing core rod 19, the conveying directions of the two conveying belts 20 are opposite, the belt bodies 20 of the two conveying belts 20 are in contact with the steel wire layers on the inner rubber pipe, the rubber belts are selected as the conveying belts 20, and the rubber pipes are driven to slide along the pipe-removing core rod 19 through the traction force generated by applying normal pressure to the rubber pipe steel wire layers through the rubber belts, so that the rubber pipe core removal is completed.

Example 2

On the basis of embodiment 1, in order to enable the wound rubber tube to be directly stored, the rubber tube winding device further comprises an air drying device arranged behind the water cooling device II25 along the traction direction of the rubber tube, wherein the air drying device comprises an air knife 27 and a fan 26, the outlet of the fan 26 is communicated with the inlet of the air knife 27, the outlet of the air knife 27 faces the rubber tube, and the residual moisture on the surface of the plastic layer of the rubber tube is dried by the pressure air flow in the air knife 27.

The invention also provides a coreless continuous manufacturing method of the steel wire wound hydraulic rubber tube, which comprises the following steps:

s1, extruding an inner rubber tube: coating oil on the shaping core rod 9 to form an oil film between the inner rubber tube and the shaping core rod 9, and extruding high-temperature rubber to wrap the inner rubber tube outside the shaping core rod 9 to form the inner rubber tube;

s2, water cooling of the inner rubber tube: cooling the extruded inner rubber tube with water, and reducing the temperature to below 50 ℃;

s3, inner rubber tube freezing: freezing the water-cooled inner rubber tube to reduce the temperature of the inner rubber tube to between minus 30 ℃ and minus 40 ℃;

s4, winding a steel wire layer on the inner rubber tube: winding two steel wire layers on the frozen inner rubber tube;

s5, inner rubber tube depoling: the inner rubber tube wound with the steel wire layer is pulled to separate the rubber tube from the tube-removing core rod 19;

s6, further comprising the steps of adding a protective layer to the inner rubber tube after core stripping and rolling the inner rubber tube added with the protective layer.

Wherein, increase the protective layer and carry out the step of rolling to the interior rubber tube that increases the protective layer in the concrete S6, include: s61, heating the steel wire layer on the inner rubber tube at the temperature of 80-150 ℃ for 40-60 seconds until the temperature of the steel wire layer on the inner rubber tube reaches 30-35 ℃; s62, wrapping a layer of outer glue outside the steel wire layer on the heated inner rubber pipe to form an outer rubber layer of the rubber pipe; s63, wrapping a layer of plastic outside the rubber tube to form a rubber tube plastic layer; s64, cooling the rubber tube coated with the plastic layer to reduce the temperature of the surface of the plastic layer to 40-50 ℃; s65, air-drying the residual moisture on the surface of the rubber tube plastic layer; and S66, winding the air-dried rubber tube.

Wherein, the step of winding two steel wire layers on the frozen inner rubber tube in the specific S4 comprises the following steps:

s41, winding a first layer of steel wire on the frozen inner rubber tube; s42, winding a second layer of steel wires on the basis of the first layer of steel wires, wherein the winding directions of the first layer of steel wires and the second layer of steel wires are opposite; when the number of layers of the wound steel wires is 2, the winding angles of the first layer of steel wires and the second layer of steel wires are 54.2 degrees and 55.2 degrees respectively; when the number of layers of the wound steel wires is 4, the winding angles of the steel wires at the 1 st layer to the 4 th layer are respectively 53.7 degrees, 54.2 degrees, 55.2 degrees and 55.7 degrees.

Wherein, the concrete step of interior rubber tube water-cooling in S2 still includes: the inner rubber tube is cooled by a cold water curtain at 5-10 ℃ for 60-90 seconds, and the aim is to reduce the temperature of the rubber tube to below 50 ℃ as soon as possible.

Wherein, the concrete step of extruding the inner rubber tube in S1 further comprises: and gas with the pressure of 0.11-0.15 MPa is filled between the inner wall of the inner rubber tube and the outer cylindrical surface of the shaping core rod 9, so as to ensure that the extruded inner rubber tube is cylindrical in the cooling process.

It should be noted that, when the inner rubber tube moves on the shaping core mold 9, the physical state is high-temperature viscous non-newtonian fluid, the texture is soft, the movement is pushed out by high-pressure rubber in the head of the rubber extrusion 1, and the axial direction is in a pressure state; when the inner rubber tube moves on the transition core rod 15, the hardness of the inner rubber tube is gradually increased along with the reduction of the temperature, the inner rubber tube is cooled by water and then is converted into an elastic body from viscous non-Newtonian fluid, and the inner rubber tube is further cooled and then is converted into a rigid body from hardness which is continuously increased; the inner rubber tube is a rigid body in a physical state when moving on the winding core rod 16, and the gap between the inner rubber tube and the winding core rod is reduced due to the fact that the diameter of the winding core rod is increased, so that the size stability of the rubber tube after steel wires are wound is guaranteed; when the inner rubber tube moves to the transition core rod 15 and the winding core rod 16, the inner rubber tube moves under the driving of the friction force between the belt of the roller conveying mechanism and the steel wire layer of the inner rubber tube, and the inner rubber tube moves from the tube-removing core rod 19 to be wound on the winding drum through the rotating torque of the winding motor by the pulling force on the winding drum 28; and the operation technological parameters of each device depend on a PLC program to realize computer centralized control, and the self-adaptive control technology is adopted to ensure the mutual matching of the operation parameters of each device in the rubber tube production device so as to ensure the stability of the quality of rubber tube products, and the production speed of the whole production device has adjustable speed change.

In summary, according to the method and the device for continuously manufacturing the steel wire wound hydraulic rubber tube by the coreless method provided by the embodiment of the invention, the lubricating oil is injected into the lubricating oil flow passage through the oil pump, so that an oil film is formed between the inner rubber tube and the shaping mandrel, and the high-temperature rubber extruded by the extruder is prevented from being adhered to the shaping mandrel, so that the inner rubber tube is hardened through the water cooling and freezing processes, the rubber extruded by the extruder continuously pushes the inner rubber tube to move until the inner rubber tube wound with the metal layer is pulled by the roller conveying mechanism to complete depoling, and therefore, the coreless method and the automatic production for the subsequent rubber tube production are realized, the production cost is reduced, the production efficiency is improved, the practicability is high, and the method and the device are worthy of popularization.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.