An angular positioning yarn separating device and yarn separating method for dense yarns

Abstract

The present invention discloses an angular positioning yarn separating device and a yarn separating method for dense yarns. The device includes a rotary separating unit, a linear driving unit, and an angular positioning unit. The rotary separating unit mainly consists of a pawl and a swing cylinder. The linear driving unit mainly consists of a linear driver and a linear guide rail. The angular positioning unit mainly consists of an annular guide rail, a sliding seat, and a circumferential driving module. The rotary separating unit is fixedly connected to the linear driving unit and is installed on the angular positioning unit through the sliding seat. When separating yarns, the linear driver pushes the rotary separating unit to approach the implantation area along the linear guide rail. The pawl is inserted into the gap between two rows of yarns, and the swing cylinder drives the pawl to rotate to separate the yarns. The angular positioning unit is driven by a servo motor, and combined with an angle detection device, precise angular positioning can be performed on the annular guide rail, achieving precise angular positioning separation for dense yarns and effectively solving the problem of automatic implantation of radially reinforced yarns.

Description

Technical Field

[0001] The present invention relates to the field of composite preform forming, and specifically relates to a corner positioning yarn separating device for dense yarns. Background Art

[0002] Composite preforms are a typical representative of composite reinforcements, referring to three-dimensional structural skeletons formed by laying fibers through processes such as braiding and weaving. Composite components with preforms as reinforcements have characteristics such as good interlayer performance and strong impact resistance, and are widely used in components such as engine nozzles and radar radomes.

[0003] Currently, the forming of composite preforms mainly focuses on three-dimensional four-directional and three-dimensional five-directional braiding. Implanting radial reinforcing yarns on the basis of three-dimensional four-directional and three-dimensional five-directional preform forming can significantly improve the radial mechanical properties of the formed composite components. However, during the forming process, there are problems of dense and complexly intertwined yarns, making it difficult to achieve low-damage automated implantation of radial reinforcing yarns. Summary of the Invention

[0004] Object of the Invention: Aiming at the above-mentioned drawbacks, the present invention provides an accurate and efficient corner positioning yarn separating device for dense yarns.

[0005] Technical Solution: To solve the above problems, the present invention proposes a corner positioning yarn separating device for dense yarns, including a rotating separation unit, a linear drive unit, and a corner positioning unit;

[0006] The rotating separation unit includes a pawl, a pawl connecting piece, a swing cylinder, and a swing cylinder mounting seat; the swing cylinder is connected to the swing cylinder mounting seat; the pawl is connected to the swing cylinder mounting seat through the pawl connecting piece; the swing cylinder drives the pawl to rotate;

[0007] The linear drive unit includes a linear driver, a fixed seat, a linear guide rail slider, a linear guide rail, and a guide rail mounting plate; the linear driver is connected to the fixed seat; the bottom of the fixed seat is connected to the linear guide rail slider and is stuck on the linear guide rail; the linear driver mounting seat and the linear guide rail are connected to the guide rail mounting plate; the swing cylinder mounting seat is connected to the fixed seat; the linear driver drives the rotating separation unit to move along the linear guide rail through the fixed seat;

[0008] The corner positioning unit includes a sliding seat, a circumferential drive module, and an annular guide rail; the sliding seat includes a plurality of rollers, a plurality of positioning blocks, and a sliding seat plate; the rollers and positioning blocks are connected to the sliding seat plate and are stuck on the annular guide rail; the circumferential drive module includes a gear, a reduction gearbox, and a rotating motor, and the gear meshes with the teeth of the annular track; the rotating motor is connected to the reduction gearbox, and the base of the reduction gearbox is installed on the upper surface of the sliding seat plate, and the output shaft is connected to the gear.

[0009] Further, when separating the yarns, the implantation position is determined by the angular positioning unit. The rotation separation unit is driven by the linear drive unit to approach the implantation area and the pawl is inserted into the yarn gap. The pawl is driven to rotate by the swing cylinder to separate the yarns.

[0010] Further, the angular positioning of the device on the annular guide rail is realized by combining a rotary motor with an angle detection device.

[0011] Further, the deflection angle of the swing cylinder is controlled according to the working conditions or the design requirements of the yarn implantation mechanism.

[0012] Further, the swing cylinder mounting seat is connected to the fixed seat to fix the rotation separation unit and the linear drive unit together.

[0013] Further, it can be used for the automated implantation of radially reinforcing yarns and auxiliary operations such as yarn arrangement, and can be generally applied to various knitting equipment.

[0014] Further, the angle detection device adopts one or several of a code disk, a gyroscope, and an industrial camera.

[0015] Further, the linear drive adopts one of cylinder drive, lead screw drive, and servo motor drive.

[0016] Further, the linear drive unit further includes a linear drive adapter and a linear drive mounting seat; the linear drive is installed on the linear drive mounting seat through the linear drive adapter and is connected to the fixed seat.

[0017] The present invention also provides a yarn separation method using the above-mentioned angular positioning yarn separation device for dense yarns: the circumferential movement of the device is realized by the engagement of the gear with the teeth of the annular track; when the movement reaches the set angle, the angle encoder built in the servo motor detects the position information and stops the movement of the circumferential drive module; the rotation separation unit is pushed by the telescopic cylinder to approach the implantation area and the pawl is inserted into the yarn gap; the swing cylinder in the rotation separation unit drives the pawl to rotate to separate the yarns and expand the operation space for implanting the radial yarns.

[0018] Compared with the prior art, the present invention has the following beneficial effects: based on the difficulty of separating densely interwoven yarns, the present invention innovatively proposes a method of first performing angular positioning, approaching the interweaving area, and finally rotating to separate adjacent yarns. Compared with the existing manual implantation technology of radial yarns, the device proposed by the present invention can expand the interweaving network space, provide the possibility for the shuttle of the yarn implantation equipment, and greatly improve the automation degree of radial yarn implantation. Description of the Drawings

[0019] Figure 1 The following shows a schematic structural diagram of an angular positioning yarn separation device for dense yarns in the present invention;

[0020] Figure 2 The structural schematic diagram of the rotation separation unit in the present invention is shown;

[0021] Figure 3 The structural schematic diagram of the linear drive unit in the present invention is shown;

[0022] Figure 4 The structural schematic diagram of the angular positioning unit in the present invention is shown;

[0023] Figure 5 The attitude schematic diagrams of the initial and separated states of the pawl in the present invention are shown. Detailed implementation manners

[0024] The technical solution provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0025] As Figures 1 to 5 shown, the present invention provides an angular positioning yarn separating device for dense yarns, including a rotation separation unit 1, a linear drive unit 2, and an angular positioning unit 3. The rotation separation unit 1 includes a pawl 11, a pawl connecting member 12, a swing cylinder 13, and a swing cylinder mounting seat 14. The swing cylinder 13 is connected to the swing cylinder mounting seat 14; the pawl 11 is connected to the swing cylinder mounting seat 14 through the pawl connecting member 12. The swing cylinder 13 can drive the pawl 11 to rotate. The linear drive unit 2 includes a linear driver 21, a linear driver joint 22, a linear driver mounting seat 23, a fixed seat 24, a linear guide rail slider 25, a linear guide rail 26, and a guide rail mounting plate 27. The linear driver 21 is installed on the linear driver mounting seat 23 through the linear driver 21 joint 22 and is connected to the fixed seat 24; the bottom of the fixed seat 24 is connected to the linear guide rail slider 25 and is clamped on the linear guide rail 26; the linear driver mounting seat 23 and the linear guide rail 26 are connected to the guide rail mounting plate 27. The swing cylinder mounting seat 14 is connected to the fixed seat 24 to realize the fixed connection between the rotation separation unit 1 and the linear drive unit 2. The linear driver 21 can drive the rotation separation unit 1 to move along the linear guide rail 26 through the fixed seat 24. The angular positioning unit 3 includes a slide seat 31, a circumferential drive module 32, and an annular guide rail 33. The slide seat 31 includes a plurality of rollers 311, a plurality of positioning blocks 312, and a slide seat plate 313. The rollers 311, the positioning blocks 312 are connected to the slide seat plate 313 and are clamped on the annular guide rail 33. The circumferential drive module 32 includes a gear 321, a speed reducer 322, and a rotating motor 323. The gear 321 meshes with the teeth of the annular track 33. The rotating motor 323 is connected to the speed reducer 322. The base of the speed reducer 322 is installed on the upper surface of the slide seat plate 313, and the output shaft is connected to the gear 321.

[0026] The present invention will be further described below in conjunction with specific embodiments:

[0027] The linear drive 21 adopts a telescopic cylinder, the rotary motor 323 adopts a servo motor, and the circumferential drive module 32 of the angular positioning unit 3 is driven by the driver servo motor. The circumferential movement of the device is achieved by the meshing of the gear 321 with the gear teeth of the annular track 33; when the movement reaches the set angle, the angle encoder built into the servo motor detects the position information and stops the movement of the circumferential drive module 32; the telescopic cylinder pushes the rotary separation unit 1 close to the implantation area and inserts the pusher claw 11 into the yarn gap; the swing cylinder 13 in the rotary separation unit 1 drives the pusher claw 11 to rotate, pushes the yarn away, and expands the operating space for radial yarn implantation.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An angular positioning yarn separating device for dense yarns, characterized in that, It comprises a rotation separation unit (1), a linear drive unit (2) and an angular positioning unit (3); The rotary separation unit (1) comprises a pusher claw (11), a pusher claw connecting piece (12), a swing cylinder (13) and a swing cylinder mounting seat (14); the swing cylinder (13) is connected to the swing cylinder mounting seat (14); the pusher claw (11) is connected to the swing cylinder mounting seat (14) via the pusher claw connecting piece (12); the swing cylinder (13) drives the pusher claw to rotate; The linear drive unit (2) comprises a linear drive (21), a fixed seat (24), a linear guide slider (25), a linear guide rail (26) and a guide rail mounting plate (27); the linear drive (21) is connected to the fixed seat (24); the bottom of the fixed seat (24) is connected to the linear guide slider (25) and clamped on the linear guide rail (26); the linear drive mounting seat (23) and the linear guide rail (26) are connected to the guide rail mounting plate (27); the swing cylinder mounting seat (14) is connected to the fixed seat (24); the linear drive (21) drives the rotary separation unit (1) to move along the linear guide rail (26) via the fixed seat (24); The angular positioning unit (3) comprises a slide seat (31), a circumferential drive module (32), and an annular guide rail (33); the slide seat comprises a plurality of rollers (311), a plurality of positioning blocks (312), and a slide seat plate (313); the rollers (311), the positioning blocks (312) are connected to the slide seat plate (313) and are clamped on the annular guide rail (33); the circumferential drive module (32) comprises a gear (321), a reducer (322), and a rotating motor (323); the gear (321) is meshed with the gear teeth of the annular guide rail (33); the rotating motor (323) is connected to the reducer (322); the base of the reducer (322) is mounted on the upper surface of the slide seat plate (313), and the extended shaft is connected to the gear (321).

2. The angular positioning yarn separating device for dense yarns according to claim 1, characterized in that, When the yarn is separated, the implantation position is determined by the angular positioning unit (3), the linear drive unit (2) drives the rotating separation unit (1) to approach the implantation area and insert the pusher claw into the yarn gap, and the pusher claw is driven to rotate by the swing cylinder to push the yarn apart.

3. The angular positioning yarn separating device for dense yarns according to claim 2, characterized in that, The angular positioning of the device on the annular guide rail (33) is achieved by combining a rotating motor (323) with an angle detection device.

4. The angular positioning yarn separating device for dense yarns according to claim 3, characterized in that, The swing cylinder mounting seat (14) is connected to the fixing seat (24) to achieve fixed connection between the rotary separation unit (1) and the linear drive unit (2).

5. The angular positioning yarn separating device for dense yarns according to claim 1, characterized in that, The angle detection device uses one or more of a coding disk, a gyroscope, and an industrial camera.

6. The angular positioning yarn separating device for dense yarns according to claim 1, characterized in that, The linear drive (21) is driven by a cylinder or a servo motor.

7. The angular positioning yarn separating device for dense yarns according to claim 1, characterized in that, The linear drive unit (2) further comprises a linear drive joint (22) and a linear drive mounting seat (23); the linear drive (21) is mounted on the linear drive mounting seat (23) via the linear drive joint (22) and is connected to the fixing seat (24).

8. A yarn separation method using a yarn separation device for angular positioning of dense yarns according to any one of claims 1 to 7, characterized in that, The circumferential motion of the device is achieved by meshing the gears with the teeth of the annular track; when the motion reaches the set angle, the angle encoder built into the servo motor detects the position information and stops the motion of the circumferential drive module; The separating unit is pushed by the telescopic cylinder to rotate close to the implantation area and insert the pusher claw into the yarn gap; The swing cylinder in the rotary separation unit drives the pusher claw to rotate, pushes the yarn away, and expands the operating space for radial yarn implantation.

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