Filament placement device with synchronous measurement function

Abstract

The utility model relates to the technical field of automatic fiber placement, and particularly discloses a fiber placement device with a synchronous measurement function. The fiber placement device with the synchronous measurement function comprises a supporting frame, a fiber placement roller, an imaging assembly and a controller, and the supporting frame can move in the first direction; the fiber placement roller is arranged at the bottom of the support frame; the imaging assembly comprises a camera, the camera is arranged on the supporting frame with the shooting angle adjustable, the camera is located on the rear side of the fiber placement roller, the camera is used for shooting a fiber placement area, and the fiber placement area is located on the rear side of the fiber placement roller; and the controller is in communication connection with the camera and a driving part for driving the support frame to move, and is configured to receive a fiber placement image shot by the camera and control the starting and stopping of the driving part based on the quality of the fiber placement image. According to the arrangement, the paving efficiency is improved; in addition, compared with manual visual inspection, the precision is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic fiber placement, in particular to a fiber placement device with a synchronous measurement function. Background Art

[0002] The automatic fiber placement technology uses multiple filamentary prepreg tows (prepregs), and can perform independent yarn breakage-clamping-refeeding operations on each tow. The fiber placement head automatically completes functions such as prepreg conveying, shearing, heating, and compaction according to a certain motion law, realizing the automatic fiber placement and forming of composite material structural parts.

[0003] The essence of the forming process of automatic fiber placement is that under the dual geometric constraints of the mold surface and the fiber placement trajectory, and under the coupled action of the thermal field and the pressure field, a temporary and unreliable bond is formed between the prepreg and the base material. In fact, due to the limitations of the material properties of the prepreg itself and the characteristics of the automatic fiber placement process, different types of defects, such as overlap, gap, warping, kinking, etc., will inevitably be introduced into the laid layers during the automatic fiber placement forming process. And the above defects are one of the important influencing factors affecting the forming. Therefore, visual inspection must be carried out on each laid layer during the laying process to timely detect unqualified products.

[0004] Visual inspection has the problems of low accuracy, high labor intensity, and easy fatigue of operators, which affects the inspection efficiency. In addition, considering safety issues, it is necessary to check after each layer is laid, and the next layer can be laid only after passing the inspection. For example, for a 2m*2m composite wall panel, the laying time of one layer of prepreg is about 10 minutes, while the defect inspection time is about 30 to 40 minutes, that is, it takes 30 to 40 minutes to stop the machine after each layer is laid to complete the inspection, which seriously affects the laying efficiency. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a fiber placement device with a synchronous measurement function to solve the problems of low inspection accuracy and low laying efficiency in the prior art.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] The fiber placement device with a synchronous measurement function includes:

[0008] A support frame that can move in the first direction;

[0009] A fiber placement roller rotatably provided at the bottom of the support frame around its own axis;

[0010] Imaging assembly, the imaging assembly includes a camera, the camera is disposed on the support frame with an adjustable shooting angle, and the camera is located behind the fiber placement roller, the camera is used to photograph the fiber-placement area, and the fiber-placement area is located behind the fiber placement roller;

[0011] Controller, the controller is communicatively connected to the camera and the driving member that drives the movement of the support frame, and is configured to receive the fiber-placement image captured by the camera and control the start and stop of the driving member based on the quality of the fiber-placement image.

[0012] As an alternative technical solution of a fiber-placement device with a synchronous measurement function, the imaging assembly includes a first driving member and a transmission assembly, the first driving member is disposed on the support frame, the transmission assembly includes a first driving wheel, a first driven wheel and a first transmission member, the axes of the first driving wheel and the first driven wheel both extend along a second direction perpendicular to the first direction, and are spaced apart on the support frame, the first driving wheel and the first driven wheel are both arranged to be rotatable about their own axes, the first transmission member is disposed between the first driving wheel and the first driven wheel, the first driving wheel is drivingly connected to the output end of the first driving member, and the camera is disposed on the first driven wheel.

[0013] As an alternative technical solution of a fiber-placement device with a synchronous measurement function, the first transmission member is a synchronous belt, and the circumferences of the first driving wheel and the first driven wheel are both provided with tooth portions that can cooperate with the synchronous belt, and the synchronous belt meshes with the first driving wheel and the first driven wheel.

[0014] As an alternative technical solution of a fiber-placement device with a synchronous measurement function, the first driven wheel is provided with an installation hole along its radial direction, the camera is inserted into the installation hole and fixed to the first driven wheel.

[0015] As an alternative technical solution of a fiber-placement device with a synchronous measurement function, the imaging assembly includes a rotation driving member, the rotation driving member includes a driving body and a driving shaft, the driving shaft is rotatably disposed on the driving body about its own axis, the axis of the driving shaft is parallel to the vertical plane passing through the first direction, and one of the driving body and the driving shaft is connected to the support frame, and the other is connected to the camera.

[0016] As an alternative technical solution of a fiber-placement device with a synchronous measurement function, the imaging assembly includes a first driven wheel that can rotate about its own axis, the axis of the first driven wheel extends along the second direction, the driving shaft is fixed to the first driven wheel, and the extending direction of the driving shaft is perpendicular to the axis direction of the first driven wheel.

[0017] As an alternative technical solution of a fiber placement device with a synchronous measurement function, the resolution of the camera is not less than 5 million PPI; and / or,

[0018] The shooting speed of the camera is not less than 600 frames per second.

[0019] As an alternative technical solution of a fiber placement device with a synchronous measurement function, the fiber placement device with a synchronous measurement function further includes an alarm component. The alarm component is communicatively connected to the controller and is configured to send an alarm message when the quality of the fiber placement image is unqualified.

[0020] As an alternative technical solution of a fiber placement device with a synchronous measurement function, the fiber placement device with a synchronous measurement function further includes an illumination component. The illumination component includes an illumination bracket and an illumination member. The illumination bracket is disposed on the support frame, and the illumination member is disposed on the illumination bracket and is used to emit light to illuminate the fiber placement area.

[0021] As an alternative technical solution of a fiber placement device with a synchronous measurement function, the illumination component further includes a second driving member and a second transmission member. The second driving member is disposed on the support frame, and the second transmission member is disposed between the output end of the second driving member and the illumination bracket and drives the illumination bracket to rotate.

[0022] The beneficial effects of the present utility model are as follows:

[0023] The present utility model provides a fiber placement device with a synchronous measurement function. The fiber placement device with a synchronous measurement function includes a support frame and a fiber placement roller. During the movement of the support frame, the fiber placement roller can complete the compaction work. Since the camera in the imaging component is installed on the support frame and is located behind the fiber placement roller and is used to photograph the fiber placement area, the photographed fiber placement image can be sent to the controller for analysis in a timely manner. By means of real-time analysis, there is no need to wait until a layer is completely laid before inspection, which improves the laying efficiency; and compared with manual visual inspection, the accuracy is higher, and it can work efficiently for a long time, which is beneficial to improving the inspection efficiency and thus improving the laying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the fiber placement device with a synchronous measurement function from the first perspective in an embodiment of the present utility model;

[0025] Figure 2 is a schematic structural diagram of the fiber placement device with a synchronous measurement function from the second perspective in an embodiment of the present utility model;

[0026] Figure 3 is a schematic structural diagram of the fiber placement process of the fiber placement device with a synchronous measurement function in an embodiment of the present utility model.

[0027] In the figure:

[0028] 1000. Filament-laid area;

[0029] 100. Support frame;

[0030] 200. Filament-laying roller;

[0031] 300. Imaging component; 310. Camera; 320. First driving member; 330. Transmission component; 331. First driving wheel; 332. First driven wheel; 333. First transmission member; 340. Rotation driving member; 341. Driving body; 342. Driving shaft;

[0032] 400. Lighting component; 410. Lighting bracket; 420. Lighting member; 430. Second driving member; 440. Second transmission member. Detailed implementation manners

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0035] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0037] As Figures 1 to 3 shown, this embodiment provides a fiber placement device with a synchronous measurement function. The fiber placement device with a synchronous measurement function includes a support frame 100, a fiber placement roller 200, an imaging component 300, and a controller. Among them, the support frame 100 can move along a first direction; the fiber placement roller 200 is rotatably provided at the bottom of the support frame 100 around its own axis; the imaging component 300 includes a camera 310. The shooting angle of the camera 310 is adjustable and is provided on the support frame 100 to shoot different areas, and the camera 310 is located behind the fiber placement roller 200. The camera 310 is used to shoot the already placed fiber area 1000, and the already placed fiber area 1000 is located behind the fiber placement roller 200. The shooting of the camera 310 will not be interfered by the fiber placement roller 200; the controller is communicatively connected to the camera 310 and a driving member for driving the support frame 100 to move, and is configured to receive the fiber placement image captured by the camera 310 and control the start and stop of the driving member based on the quality of the fiber placement image.

[0038] During use, the camera 310 timely sends the captured fiber placement image to the controller for analysis. Among them, the fiber placement image is analyzed in real time through the controller. If the detection is qualified, the support frame 100 does not stop moving; if it is unqualified, the movement of the support frame 100 is stopped, and manual operation can be carried out to re-lay. In the way of real-time analysis, there is no need to wait until a layer is laid before analyzing, which improves the laying efficiency; in addition, compared with manual visual inspection, it has higher precision and can work efficiently for a long time, which is beneficial to improving the inspection efficiency, thereby further improving the laying efficiency.

[0039] Among them, a gigabit cable is connected between the controller and the camera 310 to ensure the smoothness of data stream transmission. It should be noted that the defect can be at least one of lapping, gap, warping, kinking, wrinkling, triangular area and foreign matter. The specific analysis method can be set with reference to the prior art and is not limited. The camera 310 can be an infrared camera 310 or a laser camera 310.

[0040] Combined with Figure 2 As shown, in some embodiments, the imaging assembly 300 includes a first driving member 320 and a transmission assembly 330. The first driving member 320 is arranged on the support frame 100. The transmission assembly 330 includes a first driving wheel 331, a first driven wheel 332 and a first transmission member 333. The axes of the first driving wheel 331 and the first driven wheel 332 both extend along a second direction perpendicular to the first direction and are spaced apart on the support frame 100. The first driving wheel 331 and the first driven wheel 332 are both arranged to be rotatable about their own axes. The first transmission member 333 is arranged between the first driving wheel 331 and the first driven wheel 332. The output end of the first driving wheel 331 is drivingly connected to the first driving member 320, and the camera 310 is arranged on the first driven wheel 332. This setting can realize the adjustment of the incident angle of the camera 310, so that the shooting position of the camera 310 can be adjusted, so that the shooting position can be close to or far from the wire laying roller 200 to adapt to the wire laid area 1000 with different positions.

[0041] To improve the adjustment accuracy, in some embodiments, the first transmission member 333 is a synchronous belt, and tooth portions that can cooperate with the synchronous belt are provided on the circumferences of the first driving wheel 331 and the first driven wheel 332, and the synchronous belt meshes with the first driving wheel 331 and the first driven wheel 332.

[0042] In some embodiments, the first driven wheel 332 is provided with a mounting hole along its radial direction, and the camera 310 is inserted into the mounting hole and fixed to the first driven wheel 332. Among them, the first driven wheel 332 can be provided with a locking screw hole, and a locking screw is threadedly engaged with the locking screw hole and abuts against the camera 310. This setting makes the installation of the camera 310 and the first driven wheel 332 convenient.

[0043] To further expand the adjustment range of the camera 310, in some embodiments, the imaging assembly 300 includes a rotation driving member 340. The rotation driving member 340 includes a driving body 341 and a driving shaft 342. The driving shaft 342 is rotatably arranged on the driving body 341 around its own axis. The axis of the driving shaft 342 is parallel to the vertical plane passing through the first direction. One of the driving body 341 and the driving shaft 342 is connected to the support frame 100, and the other is connected to the camera 310. The vertical plane is formed by the first direction and the third direction. Among them, the first direction is the front-back direction, the second direction is the left-right direction, and the third direction is the up-down direction. During filament placement, the support frame 100 moves forward. This setting enables the shooting angle of the camera 310 to be adjusted in the left-right direction, so as to adapt to the filament-placed area 1000 at different positions in the second direction. Among them, the filament placement image can cover the prepreg being placed and a prepreg filament bundle at the edge of the adjacent placed prepreg. Specifically, the width of the filament placement image is 1 / 4 inch, 1 / 2 inch or 1 inch.

[0044] In some embodiments, the imaging assembly 300 includes a first driven wheel 332 that can rotate around its own axis. The driving shaft 342 is fixed to the first driven wheel 332, and the extending direction of the driving shaft 342 is perpendicular to the axis direction of the first driven wheel 332. Among them, the axis of the first driven wheel 332 extends along the second direction. This setting enables a wider adjustment range of the camera 310, and realizes that the shooting range of the camera 310 can be arbitrarily adjusted in the entire filament-placed area 1000.

[0045] In other embodiments, the rotation driving member 340 can also be replaced by a telescopic assembly. The telescopic assembly includes a telescopic body and a telescopic rod. The telescopic rod is slidably arranged on the telescopic body and is fixedly connected to the first driven wheel 332, and the camera 310 is fixedly connected to the telescopic body.

[0046] To improve the detection accuracy, in some embodiments, the resolution of the camera 310 is not less than 5 million PPI. That is, the pixel density of the camera 310 is not less than 5 million. To match the filament placement speed, the shooting speed of the camera 310 is not less than 600 frames per second. Among them, the filament placement speed is 50 m / min.

[0047] During the filament placement process, the smaller the mass of the filament placement device with synchronous measurement function, the smaller the driving energy required, and the more beneficial it is to reduce the use cost. For this reason, at least one of the first driving wheel 331 and the first driven wheel 332 is made of aluminum alloy. Preferably, the first driving wheel 331 and the first driven wheel 332 are both made of lightweight aluminum alloy, and the density is 2.63 g / cm 3 to 2.85 g / cm 3 .

[0048] Combined Figure 1 and Figure 2As shown, to ensure the shooting quality of the fiber placement image, in some embodiments, the fiber placement device with synchronous measurement function further includes an illumination component 400. The illumination component 400 includes an illumination bracket 410 and an illumination member 420. The illumination bracket 410 is arranged on the support frame 100, and the illumination member 420 is arranged on the illumination bracket 410 and is used to emit light to illuminate the fiber placed area 1000.

[0049] In some embodiments, the illumination component 400 further includes a second driving member 430 and a second transmission member 440. The second driving member 430 is arranged on the support frame 100, and the second transmission member 440 is arranged between the output end of the second driving member 430 and the illumination bracket 410 and drives the illumination bracket 410 to rotate. This setting enables the illumination range to be adjusted, so as to adapt to the shooting area of the camera 310. Specifically, the illumination bracket 410 is rotatably arranged on the support frame 100, and the second transmission member 440 is a transmission belt. The illumination bracket 410 is provided with a second driven wheel (not shown in the figure), and the output end of the second driving member 430 is provided with a second driving wheel. The transmission belt is connected in transmission between the second driven wheel and the second driving wheel. Further, the transmission belt is a synchronous belt, and both the second driven wheel and the second driving wheel are synchronous wheels.

[0050] In some embodiments, the illumination member 420 selects a white light source with high brightness and strong focusing ability, and uses a long strip strong light beam with more than four rows of light points to enhance the brightness of the laying layer.

[0051] The fiber placement device with synchronous measurement function further includes an alarm component. The alarm component is communicatively connected to the controller and is configured to emit an alarm message when the fiber placement image quality is unqualified. That is, when the detection result meets the requirements, "OK" is displayed through the display component, and the fiber placement device with synchronous measurement function normally performs laying; when the detection result does not meet the requirements, "NG" is displayed through the display component, and the controller controls the alarm component to output an alarm signal. Among them, the alarm component can be an alarm lamp. The display component is a display screen and is communicatively connected to the controller.

[0052] During operation, first turn on the illumination member 420 and adjust the angle to increase the brightness of the fiber placed area 1000.

[0053] The support frame 100 moves to start fiber placement.

[0054] The camera 310 starts to collect the fiber placement image. Among them, the incident angle of the camera 310 can be adjusted to improve the clarity of the fiber placement image.

[0055] The collected fiber placement image is quickly uploaded and stored in the controller through a cable.

[0056] The analysis software installed in the controller processes and analyzes the collected fiber placement image based on a high-speed image processing algorithm, and gives data on whether the laying layer contains defects, the type of defects, and the size of the defects.

[0057] If the ply quality analyzed by the analysis software meets the requirements, the display will show "OK" and store the data.

[0058] If the ply quality analyzed by the analysis software does not meet the requirements, the display will show "NG" and feedback to the alarm device. The support frame 100 will stop moving and the fiber placement work will stop. The operator will conduct ply inspection and re-layup.

[0059] After dealing with the ply defect, the support frame 100 will move again, continue the fiber placement, and the defect detection system will continue to carry out the ply quality detection work.

[0060] Among them, the analysis software can independently analyze and judge the fiber placement image, identify the type of defect in real time, measure, calculate and analyze data such as the length, width and area of the defect, and feedback to the controller. The analysis software has the function of statistically analyzing the defect data within a certain period of time for statistical process control of quality problems, and the presentation forms can be various forms such as curve charts, bar charts, process control charts, etc. The analysis software can regularly archive the image data and has a fast retrieval function for the image data.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A wire laying device with synchronous measurement function, characterized in that: include: A support frame (100) capable of moving along a first direction; A wire laying roller (200) is disposed at the bottom of the support frame (100) so as to be able to roll around its own axis; An imaging assembly (300), the imaging assembly (300) comprising a camera (310), the camera (310) being arranged on the support frame (100) with an adjustable shooting angle, and the camera (310) being located at the rear side of the wire laying roller (200), the camera (310) being used to shoot a wire-laid area (1000), and the wire-laid area (1000) being located at the rear side of the wire laying roller (200); A controller is communicatively connected with the camera (310) and a driving member that drives the support frame (100) to move, and is configured to receive a wire laying image taken by the camera (310) and to control the start and stop of the driving member based on the quality of the wire laying image.

2. The wire laying device with synchronous measurement function according to claim 1, characterized in that: The imaging assembly (300) comprises a first driving member (320) and a transmission assembly (330), wherein the first driving member (320) is arranged on the support frame (100), and the transmission assembly (330) comprises a first driving wheel (331), a first driven wheel (332) and a first transmission member (333), wherein the axes of the first driving wheel (331) and the first driven wheel (332) extend along a second direction perpendicular to the first direction, and are arranged on the support frame (100) at intervals, wherein the first driving wheel (331) and the first driven wheel (332) are arranged to be able to rotate around their own axes, and the first transmission member (333) is arranged between the first driving wheel (331) and the first driven wheel (332), and the first driving wheel (331) and the output end of the first driving member (320) are drivingly connected, and the camera (310) is arranged on the first driven wheel (332).

3. The wire laying device with synchronous measurement function according to claim 2, characterized in that: The first transmission member (333) is a synchronous belt, and the first driving wheel (331) and the first driven wheel (332) are both provided with teeth that can match the synchronous belt in the circumference, and the synchronous belt is meshed with the first driving wheel (331) and the first driven wheel (332).

4. The wire laying device with synchronous measurement function according to claim 2, characterized in that: The first driven wheel (332) is provided with a mounting hole along its radial direction, and the camera (310) is inserted into the mounting hole and fixed to the first driven wheel (332).

5. The wire laying device with synchronous measurement function according to claim 1, characterized in that: The imaging assembly (300) includes a rotating driving member (340), the rotating driving member (340) includes a driving body (341) and a driving shaft (342), the driving shaft (342) is rotatably arranged on the driving body (341) around its own axis, the axis of the driving shaft (342) is parallel to a vertical plane passing through a first direction, one of the driving body (341) and the driving shaft (342) is connected to the support frame (100), and the other is connected to the camera (310).

6. The wire laying device with synchronous measurement function according to claim 5, characterized in that: The imaging assembly (300) comprises a first driven wheel (332) that can rotate around its own axis, the axis of the first driven wheel (332) extends along a second direction, the driving shaft (342) is fixed to the first driven wheel (332), and the extension direction of the driving shaft (342) is perpendicular to the axis direction of the first driven wheel (332).

7. The wire laying device with synchronous measurement function according to claim 1, characterized in that: The resolution of the camera (310) is not less than 5 million PPI; and / or, The shooting speed of the camera (310) is not less than 600 frames per second.

8. The wire laying device with synchronous measurement function according to claim 1, characterized in that: The wire laying device with synchronous measurement function further includes an alarm component, which is communicatively connected to the controller and is configured to issue an alarm message when the quality of the wire laying image is unqualified.

9. The wire laying device with synchronous measurement function according to any one of claims 1 to 8, characterized in that: The wire laying device with synchronous measurement function also includes a lighting assembly (400), wherein the lighting assembly (400) includes a lighting bracket (410) and a lighting component (420), wherein the lighting bracket (410) is arranged on the support frame (100), and the lighting component (420) is arranged on the lighting bracket (410) and is used to emit light to illuminate the wire laid area (1000).

10. The wire laying device with synchronous measurement function according to claim 9, characterized in that: The lighting assembly (400) further comprises a second driving member (430) and a second transmission member (440), wherein the second driving member (430) is disposed on the support frame (100), and the second transmission member (440) is disposed between the output end of the second driving member (430) and the lighting bracket (410), and drives the lighting bracket (410) to rotate.

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