Steel wire hose color strip processing device

Abstract

The utility model discloses a steel wire hose color strip processing device which is used for processing a color strip on a cooled and shaped steel wire hose and comprises a color strip forming device and a hot air blowback device which are sequentially arranged in the conveying direction of the steel wire hose, the color strip forming device is used for extruding color strip raw materials onto the steel wire hose, and the hot air blowback device is used for blowing hot air back to the steel wire hose. The hot air back-blowing device comprises an air blowing pipe, the air blowing pipe is connected with an air blowing nozzle obliquely blowing towards the extrusion nozzle of the color strip forming device, and the air blowing pipe is connected with a hot air supply device. According to the utility model, the strength of the steel wire hose is not influenced, and the color strips are adhered reliably and uniformly.

Description

Technical Field

[0001] The utility model relates to the technical field of hose processing, in particular to a steel wire hose color strip processing device. Background Art

[0002] Steel wire hose is a hose fitting with a steel wire reinforcement layer. It is widely used in many fields such as machinery, petrochemical, construction, aerospace, etc. due to its high compressive strength, oil resistance, corrosion resistance and other excellent properties. Steel wire hose is mainly obtained by forming steel wire into a spring shape and then combining it with the extruded pipe material at the pipe forming die.

[0003] In actual processing, a color stripe along the length direction is processed on the outer circumference of the steel wire hose to improve the decorative effect while increasing the tensile strength of the steel wire hose in the length direction. There are currently two main ways to process this color stripe.

[0004] The first method is to add a color strip forming mold to the tube body forming mold at the same time, such as Figure 4 As shown in the figure, when the steel wire hose wall is just formed, the extruded color strip material is directly adhered to the tube wall to form color strips by taking advantage of the fact that the tube body material is still softened. Since the color strips are also extruded from the die outlet, when the tube body material is in the softening stage, the extrusion of the color strip material will press the tube wall, so that in the final processed steel wire hose, the color strips on the tube wall are in the form of a recessed outer surface of the tube body, as shown in the figure. Figure 5 As shown in the figure, during the processing, due to the difference in the fusion point between the color strip material and the tube body material, cracks often occur between the color strip and the tube body after processing. The cracked position forms a weak point of the steel wire hose, which reduces the hose's compressive performance. In addition, the color strip forming mold is fixedly connected to the tube body forming mold, so when cleaning the color strip forming mold, the tube body forming mold needs to be disassembled together, which is very troublesome.

[0005] The second method is to set a separate color strip forming mold to adhere color strips on the outer surface of the steel wire hose after the steel wire hose is formed and cooled and fixed, such as the color strip processing method disclosed in the invention patent with announcement number "CN103950216B" and the name "A PVC color strip steel wire reinforced hose production device and its manufacturing method". This processing method will not form weak points on the steel wire hose, will not affect the original strength of the steel wire hose, and is convenient for separate disassembly and cleaning; however, this method mainly relies on the high temperature of the color strip raw material when it is extruded to adhere to the surface of the steel wire hose by itself, such as Figure 6 As shown, the adhesion effect is not ideal, and there will also be problems such as color bar detachment in the later stage.

[0006] In summary, it is necessary to provide a color strip processing method that does not affect the strength of the steel wire hose and can adhere reliably to improve the above situation. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a steel wire hose color strip processing device which does not affect the strength of the steel wire hose and has reliable and uniform color strip adhesion.

[0008] In order to solve the above technical problems, the technical solution of the utility model is: a steel wire hose color strip processing device, which is used to process color strips on the steel wire hose after cooling and shaping, including a color strip forming device and a hot air backblowing device arranged in sequence in the conveying direction of the steel wire hose, the color strip forming device is used to extrude the color strip raw material onto the steel wire hose, the hot air backblowing device includes a blowing pipe, the blowing pipe is connected to a blowing nozzle that sprays obliquely toward the extrusion nozzle of the color strip forming device, and the blowing pipe is connected to a hot air supply device.

[0009] As a preferred technical solution, the mouth of the blowing nozzle is arranged as a flat mouth perpendicular to the conveying direction of the steel wire hose.

[0010] As a preferred technical solution, the mouth of the blowing nozzle is concavely arranged to avoid the outer surface of the steel wire hose.

[0011] As a preferred technical solution, a hose supporting device is provided at the blowing point of the blowing nozzle.

[0012] As a preferred technical solution, the hose support device includes a vertically arranged support fixing tube, a support movable rod is slidably installed in the support fixing tube, a radial bolt for fastening the support movable rod is installed on the support fixing tube, a support frame is fixed on the upper end of the support movable rod extending out of the support fixing tube, and a support wheel is rotatably installed on the support frame.

[0013] Due to the adoption of the above technical scheme, the steel wire hose color strip processing device is used to process color strips on the steel wire hose after cooling and shaping, including a color strip forming device and a hot air back-blowing device arranged in sequence in the conveying direction of the steel wire hose, the color strip forming device is used to extrude the color strip raw material onto the steel wire hose, the hot air back-blowing device includes a blow pipe, the blow pipe is connected with a blow nozzle that blows obliquely at the extrusion nozzle of the color strip forming device, and the blow pipe is connected with a hot air supply device. The utility model additionally adheres and processes color strips on the supporting fixed tube after cooling and shaping, without affecting the original steel wire hose structure and strength. The color strip forming device extrude the color strip raw material onto the tube wall of the steel wire hose, and the blow nozzle blows hot air to the color strip raw material just attached to the tube wall of the steel wire hose. On the one hand, this hot air will promote a certain degree of softening of the steel wire hose and improve the bonding of the color strip raw material to the steel wire hose. On the other hand, the wind force will produce pressure on the color strip raw material in the direction of the steel wire hose, further promoting bonding, and the color strip bonding is reliable. In addition, the hot air will also spread the color strip raw material on the outer surface of the steel wire hose, so that the color strip raw material is evenly adhered without obvious local protrusions. After the color strip cools, the shrinkage force is small and it is not easy to crack. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

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

[0016] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at point A;

[0017] Figure 3 yes Figure 2 Schematic diagram of BB amplification structure;

[0018] Figure 4 It is a schematic diagram of a color strip processing structure in which a color strip forming mold and a tube body forming mold are fixedly connected in the prior art;

[0019] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure of the steel wire hose processed by the processing method;

[0020] Figure 6 It is a schematic diagram of the cross-sectional structure of a steel wire hose processed by a separate color strip forming mold in the prior art.

[0021] In the figure: 1- steel wire hose; 2- color strip; 3- color strip forming device; 31- extrusion die head; 32- extrusion nozzle; 33- screw extruder; 4- hot air backblowing device; 41- blowing pipe; 42- blowing nozzle; 5- hose supporting device; 51- supporting fixed pipe; 52- supporting movable rod; 53- radial bolt; 54- supporting frame; 55- supporting wheel; 91- tube body forming mold; 92- color strip forming mold. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0023] like Figure 1 and Figure 2 As shown, the steel wire hose color strip processing device is used to process the color strip 2 on the steel wire hose 1 after cooling and shaping, including a color strip forming device 3 and a hot air backblowing device 4 which are arranged in sequence in the conveying direction of the steel wire hose 1, the color strip forming device 3 is used to extrude the color strip 2 raw material onto the steel wire hose 1, the hot air backblowing device 4 includes a blowing pipe 41, the blowing pipe 41 is connected with a blowing nozzle 42 which sprays obliquely at the extrusion nozzle 32 of the color strip forming device 3, and the blowing pipe 41 is connected with a hot air supply device.

[0024] In this embodiment, the color strip 2 is additionally adhered and processed on the supporting and fixing tube 51 after cooling and finalization, which does not affect the structure of the original steel wire hose 1 and its strength. The color strip forming device 3 extrude the color strip 2 raw material onto the tube wall of the steel wire hose 1, and the blowing nozzle 42 sprays hot air to the color strip 2 raw material just attached to the tube wall of the steel wire hose 1. On the one hand, this hot air will promote a certain degree of softening of the steel wire hose 1 and improve the adhesion of the color strip 2 raw material to the steel wire hose 1. On the other hand, the wind force will produce pressure on the color strip 2 raw material toward the steel wire hose 1, further promoting adhesion, and the color strip 2 is reliably adhered. In addition, the hot air will also form a paving effect on the color strip 2 raw material on the outer surface of the steel wire hose 1, and the color strip 2 raw material is evenly adhered without obvious local protrusions. After cooling, the color strip 2 has a small shrinkage force and is not easy to crack.

[0025] The color strip forming device 3 includes an extrusion die 31, an extrusion nozzle 32 is provided at the bottom of the extrusion die 31, and the extrusion die 31 is connected to a screw extruder 33, and the screw extruder 33 and the extrusion die 31 are connected to an electromagnetic heating mechanism. The molten color strip 2 raw material is extruded from the extrusion nozzle 32 onto the steel wire hose 1 under the action of spiral extrusion; as the steel wire hose 1 is continuously conveyed, the color strip 2 raw material forms a continuous color strip 2 on the steel wire hose 1. When multiple color strips 2 need to be processed, multiple extrusion dies 31 can be set, or multiple extrusion nozzles 32 can be set on one extrusion die 31, depending on whether the color strips 2 are close together. Of course, each extrusion nozzle 32 is connected to a screw extruder 33. The principle of the above color strip forming device 3 is a well-known technology in the art and will not be repeated here.

[0026] The hot air supply device includes a fan, and an electromagnetic heating or high temperature heat exchange mechanism is arranged between the fan and the blowing pipe 41, so that the blowing forms hot air. This is easily obtained by those skilled in the art by combining conventional technical means and the description of this embodiment, and is not repeated here and is not shown in the figure.

[0027] Preferably, if Figure 2 As shown, the mouth of the blowing nozzle 42 is a flat mouth perpendicular to the conveying direction of the steel wire hose 1. The flat mouth allows the hot air to form a wind curtain. On the one hand, the heat of the hot air is more concentrated, which further promotes the softening of the steel wire hose 1 and the bonding of the color strip 2 raw materials. On the other hand, the wind pressure is stronger, which further promotes the bonding of the color strip 2 raw materials and promotes better spreading of the color strip 2 raw materials.

[0028] Preferably, if Figure 3 As shown, the mouth of the blowing nozzle 42 is concavely arranged to avoid the outer surface of the steel wire hose 1, so that the blowing nozzle 42 can be closer to the steel wire hose 1, further promoting heat concentration and wind force concentration.

[0029] Preferably, a hose support device 5 is provided at the blowing position of the blowing nozzle 42 to ensure the stable operation of the steel wire hose 1 and avoid the influence of blowing on the straight operation of the steel wire hose 1. One or more hose support devices 5 can be provided as required.

[0030] The hose support device 5 of this embodiment includes a vertically arranged support fixing tube 51, in which a support movable rod 52 is slidably installed, and a radial bolt 53 for fastening the support movable rod 52 is installed on the support fixing tube 51. A support frame 54 is fixed on the upper end of the support movable rod 52 extending from the support fixing tube 51, and a support wheel 55 is rotatably installed on the support frame 54. By twisting the radial bolt 53 to release the fastening of the support movable rod 52, the height of the support wheel 55 can be adjusted; after adjustment, by re-tightening the radial bolt 53, the support wheel 55 can be used for support at a desired height. Accordingly, the hose support device 5 of this embodiment can be used to support steel wire hoses 1 with different diameters.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. Steel wire hose color strip processing device, used for processing color strips on the steel wire hose after cooling and shaping, characterized by: It includes a color strip forming device and a hot air back blowing device which are arranged in sequence in the conveying direction of the steel wire hose. The color strip forming device is used to extrude the color strip raw material onto the steel wire hose. The hot air back blowing device includes a blowing pipe, and the blowing pipe is connected to a blowing nozzle which sprays obliquely toward the extrusion nozzle of the color strip forming device. The blowing pipe is connected to a hot air supply device.

2. The steel hose color strip processing device according to claim 1, characterized in that: The mouth of the blowing nozzle is arranged as a flat mouth perpendicular to the conveying direction of the steel wire hose.

3. The steel hose color strip processing device according to claim 1, characterized in that: The mouth of the blowing nozzle is in a concave shape for avoiding the outer surface of the steel wire hose.

4. The steel hose color strip processing device according to claim 1, characterized in that: A hose supporting device is provided at the blowing position of the blowing nozzle.

5. The steel hose color strip processing device according to claim 4, characterized in that: The hose support device includes a vertically arranged support fixing tube, a support movable rod is slidably installed in the support fixing tube, a radial bolt for fastening the support movable rod is installed on the support fixing tube, a support frame is fixed on the upper end of the support movable rod extending out of the support fixing tube, and a support wheel is rotatably installed on the support frame.

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