Large width braided belt unwinding apparatus and method

Abstract

The application provides a large-width woven belt spreading device and method. When a tape laying machine needs to longitudinally lay a tape between a bottom surface and a side surface, the tape first passes through a passage plate, which pre-deforms the tape to make the shape of the tape basically the same as the arc of the included angle. Then, a special arc-shaped press roller is used to roll and press the laid woven belt. The rubber deformation on the arc-shaped press roller can meet the change of the included angle arc radius after multi-layer laying. At the same time of laying the tape, the rubber arc-shaped press roller with the same arc as the included angle is used to press the tape and the surface of the ship body, so that the tape is not easy to fall off or wrinkle.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material laying, in particular to a device and method for spreading a large-width braided belt. Background Art

[0002] As composite materials are increasingly used, automated composite placement technology is becoming increasingly mature. This technology primarily includes automated wire placement, automated winding, and automated paving. In particular, large-scale automated paving technology is developing rapidly.

[0003] In particular, during the hull laying process, the woven tape needs to be laid on the bottom and sides of the hull. In order to ensure the integrity of the laying, it is inevitable to lay the tape at the angle where the bottom and the side meet. The junction is often an arc with a certain angle. If a traditional flat roller is used, the laid woven tape will easily wrinkle and it will be difficult to fit completely with the hull. Using the same flat roller as the bottom cannot meet the use requirements, so a special laying method is required at the intersection of the two planes. Because the flat roller only has a small contact with the bottom and the side, in order to make the laid material tape fit completely with the hull at the angle position, it is necessary to design a new method for spreading large-width woven tape, which mainly includes a pre-deformable channel at the front end and an arc-shaped roller at the rear end, and the angle of the roller can change with the change of the radius of the angle arc. Summary of the Invention

[0004] In order to solve the problems of the prior art, the present invention provides a large-width braided belt spreading device and method, which can make the belt fit the hull better without wrinkles and unevenness.

[0005] The present invention provides a large-width woven belt unwinding device, which is characterized in that it includes a pressure roller and a channel plate, wherein the pressure roller is an arc-shaped pressure roller, which is composed of two straight pressure rollers combined by a rubber layer covered on the outer surface; the channel plate includes an upper channel plate and a lower channel plate, the lower channel plate is low in the middle and high on both sides, forming a downwardly concave arc structure, the upper channel plate includes a movable part and two fixed parts, the movable part is located in the center of the channel plate, and the cylinder controls the upward and downward displacement of the movable part of the upper channel plate. When displacing downward, the upper and lower parts of the channel plate interact with each other, so that the material belt is pre-deformed from its original straight state to a curved state.

[0006] As a further improvement, when the two straight rollers of the arc-shaped roller are working, one roller is parallel to the side and performs rolling, and the other roller is parallel to the bottom surface, and the rubber at the angle is deformed to fit the arc radius.

[0007] As a further improvement, a pressure roller coil spring is used inside the arc-shaped pressure roller.

[0008] As a further improvement, the upper channel plate is respectively provided with an upper channel plate left cylinder and an upper channel plate right cylinder.

[0009] The present invention also provides a method for stretching a large-width woven belt. When the belt is conveyed, it passes through a curved channel plate. The channel plate pre-deforms the belt, and the straight belt gradually deforms into a shape that is approximately the same angle as the channel plate. The curved pressure roller compacts the conveyed curved belt, thereby achieving stretching at the curved position.

[0010] The channel plate pre-deforms the material strip in a specific manner as follows: when the cylinder drives the movable portion of the upper channel plate to move downward, the straight material strip is squeezed so that it adheres closely to the concave arc structure of the lower channel plate and deforms into a concave state.

[0011] The arc-shaped roller compaction process is specifically as follows: one roller is parallel to the side and rolls, and the other roller is parallel to the bottom surface. The rubber at the angle is deformed into a shape that fits the arc radius, compacting the conveyed arc-shaped material strip, thereby achieving strip expansion at the curved position.

[0012] The beneficial effects of the present invention are:

[0013] 1. Use channel plates to pre-deform the material strips, so that the originally straight material strips are bent into an angled shape. When the subsequent pressure rollers roll the laid material strips, the material strips can fit the hull better without wrinkles or unevenness.

[0014] 2. The pressure roller is a metal core covered with rubber roller. The pressure roller is assembled from two straight rollers, similar to the human body joints. The two rollers can be bent into different angles at will. The rubber coating on the surface of the pressure roller is relatively soft and elastic, which can meet the changes in the angle radius after multi-layer paving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 Schematic diagram of a pre-deformable channel plate;

[0017] Figure 2 Schematic diagram of the arc-shaped pressure roller;

[0018] Figure 3 This is a cross-sectional view of the interior of the arc-shaped pressure roller.

[0019] List of Figure Symbols:

[0020] Lower channel plate 1. Upper channel plate 2, upper channel plate left cylinder 3, upper channel plate right cylinder 4, movable part 5, arc pressure roller left connecting part 6, left arc pressure roller 7, right arc pressure roller 8, rubber sleeve 9, arc pressure roller right connecting part 10, pressure roller coil spring 11. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The present invention provides a large width braided belt stretching device, the structure of which is as follows: Figure 1 and Figure 2 As shown, it includes a pressure roller and a channel plate, wherein the pressure roller is as shown in FIG. Figure 2 As shown, the arc pressure roller is composed of a left arc pressure roller 7 and a right arc pressure roller 8, which are combined through a rubber layer 9 coated on the outer surface. The left arc pressure roller 7 is connected to the arc pressure roller left connecting piece 6, and the right arc pressure roller 8 is connected to the arc pressure roller right connecting piece 10. The arc pressure roller adopts a pressure roller coil spring 11 inside. Figure 3 shown.

[0023] The channel plate is as follows Figure 1 As shown, it includes an upper channel plate 2 and a lower channel plate 1. The lower channel plate 1 is low in the middle and high on both sides, forming an arc-shaped structure that is concave downward. The upper channel plate includes a movable part 5 and two fixed parts. The movable part is located in the center of the channel plate. The upper channel plate is respectively provided with an upper channel plate left cylinder 3 and an upper channel plate right cylinder 4. The cylinder controls the up and down displacement of the movable part of the upper channel plate. When displacing downward, the upper and lower parts of the channel plate interact with each other, so that the material strip is pre-deformed from its original straight state to a curved state.

[0024] A specific working method of the present invention is as follows:

[0025] When the material strip is conveyed, it passes through the arc-shaped channel plate. Further, the left cylinder 3 of the upper channel plate and the right cylinder 4 of the upper channel plate are started. When the movable part 5 of the upper channel plate 2 moves downward, it will squeeze the straight material strip, causing it to deform into a concave state, and the straight material strip gradually deforms into a shape similar to the angle of the channel plate; the left arc-shaped pressure roller 7 and the right arc-shaped pressure roller 8 compact the conveyed arc-shaped material strip, thereby realizing the stretching of the strip in the curved position; further, the compaction of the material strip is achieved by the pressure roller, and the left cylinder 3 of the upper channel plate and the right cylinder 4 of the upper channel plate on the fixed frame drive the movable frame to drive the pressure roller to compact the material strip; further, in order to adapt to the changes of the paving surface in the width direction of the pressure roller, the compaction roller adopts an internal pressure roller coil spring 11 and an external rubber sleeve 9 structure, so that the pressure roller can adaptively deform according to the paving surface.

[0026] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, the above is only a preferred embodiment of the present invention. Since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited to this. Any technical personnel familiar with this technical field is within the technical scope disclosed by the present invention. For ordinary technical personnel in this technical field, changes or replacements that can be easily thought of should be covered within the protection scope of the present invention without departing from the principle of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A device for spreading a large-width braided belt, characterized by: It includes a pressure roller and a channel plate, wherein the pressure roller is an arc-shaped pressure roller, which is composed of two straight pressure rollers with a rubber layer coated on the outer surface; the channel plate includes an upper channel plate and a lower channel plate, the lower channel plate is low in the middle and high on both sides, forming a downwardly concave arc structure, the upper channel plate includes a movable part and two fixed parts, the movable part is located in the center of the channel plate, and the cylinder controls the up and down displacement of the movable part of the upper channel plate. When it moves downward, the upper and lower parts of the channel plate interact with each other, so that the material strip is pre-deformed from the original straight state to a curved state; when the two straight pressure rollers of the arc-shaped pressure roller are working, one pressure roller is parallel to the side of the material strip for rolling, and the other pressure roller is parallel to the bottom surface of the material strip, and the rubber at the angle between the two straight pressure rollers of the arc-shaped pressure roller is deformed to fit the arc radius of the curved state of the material strip.

2. The wide-width braided belt unwinding device according to claim 1, characterized in that: A pressure roller coil spring is used inside the arc-shaped pressure roller.

3. The wide-width braided belt unwinding device according to claim 1, characterized in that: The upper channel plate is respectively provided with an upper channel plate left cylinder and an upper channel plate right cylinder.

4. A method for spreading a wide-width braided belt, using the wide-width braided belt spreading device according to claim 1, characterized in that: When the material strip is conveyed, it passes through the curved channel plate, which pre-deforms the material strip. The straight material strip gradually deforms into a shape with an angle similar to that of the curved structure of the channel plate. The curved pressure roller compacts the conveyed curved material strip, thereby achieving strip expansion at the curved position.

5. The method for spreading a wide-width braided belt according to claim 4, characterized in that: The channel plate pre-deforms the material strip in a specific manner as follows: when the cylinder drives the movable portion of the upper channel plate to move downward, the straight material strip is squeezed so that it adheres closely to the concave arc structure of the lower channel plate and deforms into a concave state.

6. The method for spreading a wide-width braided belt according to claim 4 or 5, characterized in that: The arc-shaped pressing roller compaction process is specifically as follows: one pressing roller is parallel to the side of the material strip and rolls it, and the other pressing roller is parallel to the bottom surface of the material strip. The rubber at the angle between the two straight pressing rollers of the arc-shaped pressing roller is deformed into a shape that fits the radius of the arc, compacting the conveyed arc-shaped material strip, thereby achieving strip expansion at the curved position.

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