A PVC reinforced hose forming device

Abstract

The present invention discloses a PVC reinforced hose forming device, comprising a first extruder, a first cooling trough, a first tractor, a braiding machine, a preheating machine, a second extruder, a second cooling trough, and a second tractor arranged in sequence; the first extruder or the second extruder comprises an extrusion head, and the extrusion head of the first extruder is connected to a blower for forming the inner tube of the hose; the discharge end of the second tractor is provided with a rolling device for flattening and closing the hose, and a blowing device for inflating the hose. A blowing device capable of providing air pressure to the hose is installed at the discharge end of the second tractor, which can continuously provide an air source during the production process of the hose, so that there is enough air pressure inside the hose, so that the hose can continuously maintain an inflated state, so that the inner tube and the outer tube are closely connected, the bonding quality of the inner and outer tube bodies is enhanced, and the phenomenon of pleated tubes is avoided, and the occurrence of separation of the inner and outer layers is reduced, and the expanded hose is not easy to be entangled with each other, which is convenient for cutting and winding tube collection.

Description

Technical Field

[0001] The invention relates to the field of pipe production equipment, in particular to a PVC reinforced hose forming device. Background Art

[0002] In the process of hose manufacturing, large-diameter PVC hoses, especially products with a diameter of more than 16mm, or products with a wall thickness of less than 2MM, are prone to pleating. After the tube is fully cooled, the pleated position cannot be restored to the shape of a round tube, affecting the fluid delivery of the reinforced hose. There are even cases where the product stays in the pleated position for a long time, causing separation between the inner and outer PVC material layers, seriously affecting the service life of the PVC reinforced hose. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a PVC reinforced hose forming device that can continuously provide an air source during the hose production process so that there is air with sufficient pressure inside the hose and the hose can continuously maintain an inflated state.

[0004] According to a first aspect of the present invention, there is provided a PVC reinforced hose forming device, comprising a first extruder, a first cooling trough, a first traction machine, a braiding machine, a preheating machine, a second extruder, a second cooling trough, and a second traction machine arranged in sequence;

[0005] The first extruder or the second extruder comprises an extrusion head, and the extrusion head of the first extruder is connected to a blower for forming the inner tube of the hose;

[0006] The discharging end of the second tractor is provided with a rolling device for flattening and closing the hose, and a blowing device for inflating the hose.

[0007] Beneficial effect: A blowing device that can provide air pressure to the hose is installed at the discharge end of the second traction machine. It can continuously provide an air source during the production process of the hose, so that there is air with sufficient pressure inside the hose, and the hose can be continuously maintained in an inflated state, so that the inner tube and the outer tube are tightly connected, the bonding quality of the inner and outer tube bodies is enhanced, and the phenomenon of creases is avoided, the occurrence of separation of the inner and outer layers is reduced, and the expanded hoses are not easy to entangle with each other, which is convenient for cutting and winding collection.

[0008] According to a PVC reinforced hose forming device of the first aspect of the present invention, the rolling device comprises a fixed frame fixed on the second tractor, two relatively moving pressing rollers are slidably mounted on the fixed frame, and an elastic device drives the two pressing rollers to move relative to each other. The elastic device keeps the two pressing rollers close to each other, so that the hose discharged from the second tractor can be kept in a flattened closed state, and the gas blown in from the blowing device is prevented from leaking into the hose in the second tractor, so as to ensure that the air pressure in the discharged hose is stable and keeps expanding.

[0009] According to a PVC reinforced hose forming device of the first aspect of the present invention, two pressing rollers are arranged up and down and mounted on a fixed frame, and the elastic device includes a tension spring with two ends respectively connected to the two pressing rollers. Preferably, the lower pressing roller is fixedly mounted on the fixed frame, and the upper pressing roller is slidably mounted on the fixed frame via a slider, and the two pressing rollers are kept close to each other by the tension spring.

[0010] According to the first aspect of the present invention, a PVC reinforced hose forming device is provided with an adjusting screw for adjusting the position of the pressing roller on the fixed frame, and the adjusting screw is screwed to the end of the pressing roller. The position of the upper pressing roller can be set by adjusting the adjusting screw, so that it is suitable for the production of hoses with various calibers.

[0011] According to a PVC reinforced hose forming device of the first aspect of the present invention, the blowing device comprises an air pipe, one end of the air pipe is connected to an air source, and the other end is provided with an air blowing nozzle, and a pressure regulating valve for regulating air pressure is installed on the air pipe. The air blowing nozzle is inserted into the hose, and a high-pressure gas is provided by the air source, and the air pressure in the hose is controlled by the pressure regulating valve, so that the expansion degree of the hose is kept stable.

[0012] According to the PVC reinforced hose forming device of the first aspect of the present invention, an oil-water separator is also installed on the air pipe to prevent the air mixed with impurities in the air source from mixing into the hose and ensure the quality of the hose.

[0013] According to the first aspect of the present invention, a PVC reinforced hose forming device is provided with a rubber pressure wheel for pulling the hose. The rubber pressure wheel will not damage the inner tube surface of the hose. Preferably, the number of rubber pressure wheels is set to two, which are distributed up and down and press the hose tightly to avoid air flow movement at the front and rear ends of the production line and reduce the impact on the hose diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0016] Figure 2 is a schematic structural diagram of a second traction machine according to an embodiment of the present invention;

[0017] Figure 3 It is a structural schematic diagram of an air blowing device according to an embodiment of the present invention;

[0018] Figure 4 It is a schematic structural diagram of a first traction machine according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0023] Reference Figures 1 to 4 According to a first aspect of the present invention, there is provided a PVC reinforced hose forming device, comprising a first extruder 11, a first cooling trough 13, a first traction machine 15, a braiding machine 17, a preheating machine 18, a second extruder 12, a second cooling trough 14, and a second traction machine 16 arranged in sequence; the first extruder 11 or the second extruder 12 comprises an extrusion head 19, and the extrusion head 19 of the first extruder 11 is connected to a blower 20 for forming an inner tube of the hose; the discharge end of the second traction machine 16 is provided with a rolling device 21 for flattening and closing the hose, and a blowing device 22 for inflating the hose.

[0024] A blowing device 22 for providing air pressure to the hose is installed at the discharge end of the second traction machine 16. It can continuously provide an air source during the production process of the hose, so that there is air with sufficient pressure inside the hose, and the hose is continuously kept in an inflated state, so that the inner tube and the outer tube are tightly connected, the bonding quality of the inner and outer tube bodies is enhanced, and the phenomenon of creases is avoided, the occurrence of separation of the inner and outer layers is reduced, and the expanded hose is not easy to be entangled with each other, which is convenient for cutting and winding collection.

[0025] According to a PVC reinforced hose forming device of the first aspect of the present invention, the rolling device 21 comprises a fixed frame 211 fixedly mounted on the second tractor 16, two relatively moving pressing rollers 212 are slidably mounted on the fixed frame 211, and an elastic device driving the two pressing rollers 212 to move relative to each other. The elastic device keeps the two pressing rollers 212 close to each other, so that the hose discharged from the second tractor 16 can be kept in a flattened closed state, and the gas blown in from the blowing device 22 is prevented from leaking into the hose in the second tractor 16, so as to ensure that the air pressure in the discharged hose is stable and keeps expanding.

[0026] According to a PVC reinforced hose forming device of the first aspect of the present invention, two pressing rollers 212 are arranged up and down and mounted on a fixing frame 211, and the elastic device includes a tension spring 213 whose two ends are respectively connected to the two pressing rollers 212. Preferably, the lower pressing roller 212 is fixedly mounted on the fixing frame 211, and the upper pressing roller 212 is slidably mounted on the fixing frame 211 via a slider 215, and the two pressing rollers 212 are kept close to each other by the tension spring 213.

[0027] According to a PVC reinforced hose forming device of the first aspect of the present invention, an adjusting screw 214 for adjusting the position of a pressing roller 212 is provided on a fixing frame 211, and the adjusting screw 214 is screwed to the end of the pressing roller 212. The position of the upper pressing roller 212 can be set by adjusting the adjusting screw 214, so as to be applicable to the production of hoses of various calibers.

[0028] According to a PVC reinforced hose forming device of the first aspect of the present invention, the blowing device 22 comprises an air pipe 221, one end of the air pipe 221 is connected to the air source, and the other end is provided with an air blowing nozzle 222, and a pressure regulating valve 223 for regulating air pressure is installed on the air pipe 221. The air blowing nozzle 222 is inserted into the hose, and the air source provides high-pressure gas, and the air pressure in the hose is controlled by the pressure regulating valve 223, so that the expansion degree of the hose is kept stable.

[0029] According to the PVC reinforced hose forming device of the first aspect of the present invention, an oil-water separator 224 is also installed on the air pipe 221. This is to prevent the air mixed with impurities in the air source from mixing into the hose and ensure the quality of the hose.

[0030] According to the PVC reinforced hose forming device of the first aspect of the present invention, a rubber pressing wheel 23 for pulling the hose is installed on the first traction machine 15. The rubber pressing wheel 23 will not cause damage to the inner tube surface of the hose. Preferably, the number of rubber pressing wheels 23 is set to two, which are distributed up and down and press the hose tightly and close, so as to avoid air flow movement at the front and rear ends of the production line and reduce the impact on the hose diameter.

[0031] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A PVC reinforced hose forming device, characterized in that: It includes a first extruder, a first cooling tank, a first traction machine, a braiding machine, a preheating machine, a second extruder, a second cooling tank, and a second traction machine which are arranged in sequence; The first extruder or the second extruder comprises an extrusion head, and the extrusion head of the first extruder is connected to a blower for forming the inner tube of the hose; The discharge end of the second tractor is provided with a rolling device for keeping the hose in a flattened and closed state, and a blowing device for keeping the hose in an inflated and expanded state; The blowing device comprises an air pipe, one end of which is connected to an air source, and the other end of which is provided with an air blowing nozzle, and a pressure regulating valve for regulating air pressure is installed on the air pipe; The rolling device comprises a fixed frame fixedly mounted on the second traction machine, on which two relatively movable pressing rollers are slidably mounted, and an elastic device driving the two pressing rollers to move relative to each other; After the blowing nozzle is inserted into the hose, the gas blown in by the blowing nozzle will not leak from one end of the rolling device under the action of the two pressing rollers of the rolling device, thereby ensuring that the discharged hose remains expanded; The two pressing rollers are arranged up and down and mounted on a fixed frame, and the elastic device comprises a tension spring with two ends respectively connected to the two pressing rollers; The fixing frame is provided with an adjusting screw for adjusting the position of the pressing roller, and the adjusting screw is screwed to the end of the pressing roller; An oil-water separator is also installed on the air pipe.

2. A PVC reinforced hose forming device according to claim 1, characterized in that: The first traction machine is provided with a rubber pressure wheel for traction of the hose.

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