Fiber prepreg tape winding device for composite pipe

Abstract

The utility model discloses a fiber prepreg tape winding device for a composite tube, which comprises a winding disc, a plurality of winding rollers are arranged on the winding disc at intervals along the circumferential direction, the composite tube is arranged in the center of the winding disc in a penetrating manner, and a guide mechanism for driving a prepreg tape on the winding rollers to design winding angle guide is arranged on the winding disc. The guide mechanism comprises a guide ring which is arranged on the winding disc and arranged outside the composite pipe in a sleeving mode, and angle guide cavities which correspond to the winding rollers and are provided with prepreg tapes in a penetrating mode are formed in the inner side of the guide ring at intervals. And a hot air cylinder sleeved on the composite pipe is also arranged on one side of the winding disc in the advancing direction of the composite pipe. By means of the winding device, under the synchronous winding effect of the multiple prepreg tapes, the width of the current prepreg tapes can be reduced, it is guaranteed that the adjacent prepreg tapes can be tightly connected, the problem that edge pressing is needed at present is solved, meanwhile, the winding strand number and winding tightness can be increased through the narrow prepreg tapes, and therefore the strength of the composite pipe is improved.

Description

Technical Field

[0001] The present application relates to the technical field of composite pipes, and in particular to a fiber prepreg tape winding device for composite pipes. Background Art

[0002] In the field of petrochemicals, non-metallic composite pipes can be used to handle flammable, explosive and toxic substances. These composite pipes are made of a variety of materials to provide the best pressure resistance, corrosion resistance and high temperature resistance. Common non-metallic composite pipes include glass fiber reinforced plastic pipes and carbon fiber reinforced plastic pipes. Glass fiber reinforced plastic pipes are made of glass fiber and organic polymer materials. They are light in weight, high in strength, corrosion resistant, good in thermal insulation, good in electrical insulation, and easy to install and maintain. This type of pipe is widely used in the field of petrochemicals to strengthen and prevent corrosion of process pipelines, equipment and various containers. Carbon fiber reinforced plastic pipe is a new type of non-metallic composite pipe, which is a composite pipe made of carbon fiber as a reinforcing material and resin as a matrix material. This type of pipe is stronger than steel, less dense than aluminum, more corrosion resistant than stainless steel, more resistant to high temperatures than heat-resistant steel, and has good fatigue strength and creep resistance.

[0003] At present, the composite pipe structure usually includes three layers, an inner layer, a reinforcement layer and an outer layer, among which glass fiber and carbon prepreg tape are usually used as the middle reinforcement layer, which is wound on the inner layer pipe and then covered with an outer protective layer to form a composite pipe.

[0004] At present, in order to improve the winding efficiency, a wider glass prepreg tape is usually used for winding, and the side overlap winding is required to avoid leakage of the inner tube, resulting in material waste. In addition, the wider glass fiber leads to insufficient winding tightness when the number of winding strands is reduced, resulting in insufficient strength of the composite tube. In addition, when the number of winding strands is reduced, the adjacent winding strands of the tube body will shift and separate under subsequent stress conditions, which can easily cause cracking and breakage of the tube body. Summary of the invention

[0005] In response to the above-mentioned problems, the present application aims to provide a fiber prepreg tape winding device for a composite pipe, which ensures that adjacent prepreg tapes can be tightly connected, solves the current problem of edge pressing, and at the same time, by guiding the prepreg tape, the tightness of the prepreg tape winding can be further improved, thereby improving the strength of the composite pipe.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is as follows: a fiber prepreg tape winding device for a composite tube, characterized in that: the winding device includes a winding disk, on which a plurality of winding rollers are arranged at circumferential intervals, a composite tube is passed through the center of the winding disk, and a guiding mechanism is provided on the winding disk to drive the prepreg tape on the winding roller to guide at a designed winding angle.

[0007] Preferably, the guide mechanism comprises a guide ring arranged on the winding disk and sleeved on the outside of the composite tube, and angle guide cavities corresponding to each winding roller and through which the prepreg tape is passed are provided at intervals inside the guide ring.

[0008] Preferably, an adjustment block is provided at an inner side of the guide ring in an articulated and adjustable manner, and the angle guide cavity is provided in the adjustment block.

[0009] Preferably, a hot air cylinder sleeved on the composite pipe is provided on one side of the winding disk located in the running direction of the composite pipe.

[0010] Preferably, hot air holes with gradually increasing apertures are provided on the inner side wall of the hot air cylinder at intervals along the traveling direction of the composite pipe.

[0011] The beneficial effects of the present application are: by using the winding device to ensure that multiple prepreg tapes are wound synchronously, the width of the current prepreg tape can be reduced, and adjacent prepreg tapes can be closely connected, solving the current problem of edge pressing. At the same time, the narrower prepreg tape can increase the number of wound strands and the tightness of the winding, thereby improving the strength of the composite pipe.

[0012] The guiding mechanism can accurately adjust the angle at which the prepreg tape unwound from the winding roller is wound on the inner tube body of the composite tube to ensure the tightness of the winding and the strength of the tube body.

[0013] The surface of the prepreg tape is heated by a hot air cylinder so that the prepreg tapes are bonded to each other and to the surface of the inner tube after melting, thereby further improving the tightness of the prepreg tape winding and overcoming the problem of the subsequent composite tube being broken due to the displacement of the prepreg tape under the action of external force deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of the winding disk structure of this application.

[0015] Figure 2 This is a side view of the partial structure of the winding disk of this application.

[0016] Figure 3 For this application Figure 2 An enlarged view of the structural section at point A in the middle.

[0017] Figure 4 This is an enlarged front view of the guide ring of this application.

[0018] Figure 5 This is a diagram illustrating the process of adjusting the winding angle of the prepreg tape by the adjustment block in this application.

[0019] Figure 6 This is a diagram showing the coordination of the hot air cylinder and the composite pipe for this application.

[0020] Figure 7 For this application Figure 6 Enlarged view of the structure at point B.

[0021] In the figure: 6-prepreg tape; 70-composite tube. DETAILED DESCRIPTION

[0022] In order to enable ordinary technicians in the field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Refer to the attached Figures 1 to 7 A fiber prepreg tape winding device for a composite tube is shown, the winding device comprises a winding disk 1, on which a plurality of winding rollers 2 are arranged at circumferential intervals, each winding roller is wound with a relatively narrow prepreg tape, and a composite tube is passed through the center of the winding disk 1, that is, the composite tube forming the inner layer passes through the center of the winding disk 1, and the winding disk 1 rotates at the same time, and the end of the prepreg tape on each winding roller 2 is wound on the inner layer tube of the composite tube, and when the composite tube moves straightly and the winding disk 1 rotates, the prepreg tape on each winding roller 2 is unwound and spirally wound on the inner layer tube of the composite tube at intervals. The winding device ensures that the multiple prepreg tapes are wound synchronously, the width of the current prepreg tape can be reduced, and the adjacent prepreg tapes can be closely connected, solving the problem of the need for edge pressing at present, and the narrower prepreg tape can increase the number of strands wound and the tightness of the winding, thereby improving the strength of the composite tube.

[0024] Different winding angles of the prepreg tape can obtain different tube body strengths and winding tightness. Therefore, in order to perform precise winding according to the designed angle, the winding device is provided with a guiding mechanism on the winding disk 1 to drive the prepreg tape on the winding roller 2 to guide at the designed winding angle. The guiding mechanism can accurately adjust the winding angle of the prepreg tape unwound on the winding roller 2 on the inner tube body of the composite tube to ensure the winding tightness and the strength of the tube body.

[0025] Specifically, Figure 3-4 As shown, the guide mechanism includes a guide ring 3 arranged on the winding disk 1 and sleeved outside the composite tube, and an angle guide cavity 3a corresponding to each winding roller 2 and through which the prepreg tape is inserted is provided at intervals inside the guide ring 3. The winding angle of the prepreg tape on the inner tube can be adjusted by the oblique opening angle of the angle guide cavity 3a, thereby ensuring the winding angle of the prepreg tape. Preferably, the cross-sectional structure of the angle guide cavity 3a is the same as that of the prepreg tape, and the size is slightly larger than the prepreg tape, thereby avoiding the problem of bending, twisting, and other problems that affect the normal winding of the prepreg tape during winding.

[0026] In order to further realize the adjustability of the winding angle, such as Figure 5As shown, an adjustment block 4 is provided at a distance inside the guide ring 3 and can be hingedly adjusted, and the angle guide cavity 3a is provided in the adjustment block 4. The adjustment block 4 preferably uses a screw to realize the hinge connection with the guide ring 3 and the locking after the angle adjustment, so that when winding different composite pipes, the winding angle can be adjusted in a targeted manner.

[0027] The surface of the glass prepreg is in a molten state under high temperature. Therefore, in order to improve the tightness of the prepreg winding, Figure 6 As shown, a hot air cylinder 5 sleeved on the composite tube is also provided on one side of the winding disk 1 in the direction of travel of the composite tube. That is, after the prepreg tape is wound on the inner tube, the surface of the prepreg tape is heated by the hot air cylinder 5, so that the prepreg tapes are bonded to each other and to the surface of the inner tube after the prepreg tape surface is melted, thereby further improving the tightness of the prepreg tape winding and overcoming the problem of the composite tube body being broken due to the displacement of the prepreg tape under the deformation of external force.

[0028] To enhance the effect of wind-heat, Figure 7 As shown, hot air holes 5a with gradually increasing apertures are provided on the inner wall of the hot air cylinder 5 along the direction of the composite tube. During air heating, after the composite tube enters the hot air cylinder 5, it first corresponds to the hot air holes 5a with smaller apertures, and preheats the wound prepreg tape with a smaller air volume. As the surface temperature of the prepreg tape increases, the air volume of the hot air holes 5a on the rear side increases synchronously, thereby achieving an effective air heating effect and reducing the energy consumption of the hot air cylinder 5.

[0029] The principle of the present application is: when winding the prepreg tape on the inner layer tube of the composite tube, firstly, the end of the prepreg tape on each winding roller is wound and fastened on the composite tube, and then the composite tube moves at a uniform speed, and at the same time the winding disk 1 rotates, and each prepreg tape is spirally wound on the inner layer tube of the composite tube at a standard winding angle through the angle guide cavity 3a.

[0030] After winding, when the composite tube enters the hot air cylinder 5, it first corresponds to the hot air hole 5a with a smaller aperture, and preheats the wound prepreg tape with a smaller air volume. As the surface temperature of the prepreg tape increases, the air volume of the hot air hole 5a on the rear side increases synchronously, thereby achieving an effective wind heating effect and reducing the energy consumption of the hot air cylinder 5.

[0031] The above shows and describes the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected.

Claims

1. A fiber prepreg tape winding device for a composite pipe, characterized in that: The winding device comprises a winding disk (1), on which a plurality of winding rollers (2) are arranged at circumferential intervals, a composite tube is passed through the center of the winding disk (1), and a guiding mechanism is arranged on the winding disk (1) to drive the prepreg tape on the winding roller (2) to guide at a designed winding angle.

2. The winding device according to claim 1, characterized in that: The guide mechanism comprises a guide ring (3) arranged on a winding disk (1) and sleeved outside the composite tube, and angle guide cavities (3a) corresponding to each winding roller (2) and through which the prepreg tape is passed are provided at intervals inside the guide ring (3).

3. The winding device according to claim 2, characterized in that: An adjustment block (4) is arranged at a distance inside the guide ring (3) and can be hingedly adjusted, and the angle guide cavity (3a) is opened in the adjustment block (4).

4. The winding device according to claim 3, characterized in that: A hot air cylinder (5) sleeved on the composite pipe is also provided on one side of the winding disk (1) located in the running direction of the composite pipe.

5. The winding device according to claim 4, characterized in that: Hot air holes (5a) with gradually increasing diameters are provided on the inner side wall of the hot air cylinder (5) at intervals along the running direction of the composite tube.

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