A flexible duct glass fiber cloth multi-layer glue coating composite laser control glue thickness measuring device

Abstract

The application discloses a flexible duct glass fabric multi-layer gluing composite laser control gluing thickness measuring device and relates to the field of laser thickness measurement. The device comprises a detection mechanism, which comprises a fixing seat, the outer surface of the fixing seat is hingedly connected with a connecting frame, the outer surface of the connecting frame is rotationally connected with an equipment frame, the one end of the equipment frame is circumferentially provided with a plurality of laser generating components, the laser generating components are used for acquiring reflection signals of each glue layer of the glass fabric in real time, the other end of the equipment frame is fixedly connected with a driven gear, the connecting point of the connecting frame and the equipment frame is slidably connected with a fixed rack assembly, and the fixed rack assembly is engaged with the driven gear. The plurality of laser generating components are circumferentially distributed on the equipment frame, different types of laser generators are adopted for the plurality of laser generating components, different wavelength lasers are emitted, and the thickness of different glue layers can be simultaneously measured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of laser thickness measurement, in particular to a flexible duct glass cloth multi-layer glue coating composite laser glue control thickness measurement device. BACKGROUND

[0002] The glass cloth used in flexible duct processing needs to be coated with glue during processing, and the number of glue coating layers includes multiple layers. After glue coating, thickness measurement is particularly important, as it can not only analyze the current glue coating quality, but also improve the amount of glue based on these data.

[0003] The current thickness measurement method is by laser, for example, the patent number CN107289871A discloses a glue coating thickness online detection device in a glue coating production line, which includes: a glue coating thickness detection mechanism for real-time detection of the glue coating thickness of the coated material and synchronous capture of the width of the coated material; a driving mechanism for driving the glue coating thickness detection mechanism to move along the width direction of the coated material; a control mechanism for receiving the width signal and the glue coating thickness signal of the coated material sent by the glue coating thickness detection mechanism, and controlling the driving mechanism to drive the glue coating thickness detection mechanism to move along the width direction of the coated material according to the width signal of the coated material, while converting the glue coating thickness signal of the coated material into glue coating thickness data and displaying it.

[0004] This patent detects the thickness of the glue coating layer by reciprocating translation of the glue coating thickness detection mechanism, but it cannot detect the thickness of multiple layers of glue in real time, and its detection range is single-point, i.e. the detection path and angle are uncontrollable, which may cause regular detection points and frequent problems outside the detection points, making it impossible to detect and affecting the detection reliability. SUMMARY

[0005] Therefore, the present application aims to provide a flexible duct glass cloth multi-layer glue coating composite laser glue control thickness measurement device to achieve multi-point detection and simultaneous detection of multiple layers of glue, and improve detection reliability.

[0006] To achieve the above technical purpose, the present application provides a flexible duct glass cloth multi-layer glue coating composite laser glue control thickness measurement device:

[0007] It includes a detection mechanism, the detection mechanism includes a fixed seat, the outer surface of the fixed seat is hinged with a connecting frame, the outer surface of the connecting frame is rotationally connected with an equipment frame, a plurality of laser generating components are circumferentially distributed at one end of the equipment frame, the laser generating components are used to obtain the reflection signals of each glue layer of the glass cloth in real time, a driven gear is fixed at the other end of the equipment frame, a fixed rack assembly is slidingly connected at the connection point of the connecting frame and the equipment frame, and the fixed rack assembly is engaged with the driven gear; a cloth guide roller group is distributed on both sides of the detection mechanism for guiding the glass cloth.

[0008] Preferably, further comprising: a support table, a support frame is fixed on the surface; a sliding table is assembled on the top of the support frame, the output part of the sliding table is fixedly connected with the detection mechanism, and the sliding table is used to drive the detection mechanism to reciprocatingly translate.

[0009] Preferably, the sliding table comprises: an outer shell fixed on the top of the support frame; a reciprocating screw rod rotationally connected with the outer shell at both ends; a second servo motor fixed on the outer shell, and the output end of the second servo motor is fixedly connected with the reciprocating screw rod; guide rods distributed on both sides of the reciprocating screw rod and fixedly connected with the outer shell; a sliding seat slidingly connected with the guide rods at both ends, screwedly connected with the reciprocating screw rod at the middle part, and the bottom of the sliding seat penetrates through the outer shell and is slidingly connected with the outer shell, and the fixing seat is fixed on the bottom of the sliding seat.

[0010] Preferably, the outer surface of the fixing seat is rotationally connected with a connecting sleeve, both ends of the connecting sleeve are penetrated, and the connecting frame is rotationally connected with the fixing seat through the connecting sleeve.

[0011] Preferably, the fixing seat comprises a connecting shaft and a rack, both ends of the connecting shaft and the rack are fixedly connected, the connecting shaft penetrates through the connecting sleeve, and the connecting sleeve is slidingly connected with the connecting shaft.

[0012] Preferably, the inside of the connecting sleeve is fixedly connected with a protrusion, and the outer surface of the connecting shaft is provided with a groove slidingly connected with the protrusion.

[0013] Preferably, the end of the connecting sleeve is sleeved with a worm wheel, the outer surface of the fixing seat is fixedly connected with a first servo motor, the output end of the first servo motor is fixedly connected with a worm, and the worm is engaged with the worm wheel.

[0014] Preferably, the cloth guide roller group comprises movable roller pieces and fixed roller pieces, the fixed roller pieces are distributed on both sides of the movable roller pieces, and the movable roller pieces are at least two, and the two movable roller pieces are distributed on both sides of the detection mechanism.

[0015] Preferably, the movable roller piece comprises: a connecting rod fixed on the support table; a connecting seat slidingly connected with the connecting rod at both ends; a spring sleeved on the connecting rod, and both ends of the spring are respectively abutted with the support table and the connecting seat; a first guide roller rotationally connected with the connecting seat at both ends; and an electric push rod fixed at one end on the support table and fixedly connected with the connecting seat at the other end.

[0016] Preferably, the fixed roller piece comprises: a fixed block fixed on the support table; and a second guide roller rotationally connected with the fixed block at both ends.

[0017] From the above technical solutions, the application has the following beneficial effects:

[0018] By arranging multiple laser generating assemblies in a circumferential distribution on the equipment rack, the multiple laser generating assemblies adopt different types of laser generators to emit laser beams of different wavelengths, so that different glue layers can be simultaneously measured in thickness, and when the detection mechanism reciprocates, the equipment rack can rotate to adjust the positions of the multiple laser generating assemblies, and the equipment rack can be flipped to control the detection angle, so that multi-point detection and simultaneous detection of multiple glue layers are realized, and the detection reliability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of the provided drawings.

[0020] Figure 1 The overall structure schematic diagram of the flexible duct glass fiber cloth multi-layer glue coating composite laser glue control and thickness measuring device provided by the present application is shown in the figure.

[0021] Figure 2 The overall structure schematic diagram of the detection mechanism of the flexible duct glass fiber cloth multi-layer glue coating composite laser glue control and thickness measuring device provided by the present application is shown in the figure.

[0022] Figure 3 The front view structure schematic diagram of the detection mechanism of the flexible duct glass fiber cloth multi-layer glue coating composite laser glue control and thickness measuring device provided by the present application is shown in the figure.

[0023] Figure 4 The overall structure schematic diagram of the movable roller part of the flexible duct glass fiber cloth multi-layer glue coating composite laser glue control and thickness measuring device provided by the present application is shown in the figure.

[0024] Figure 5 The overall structure schematic diagram of the fixed roller part of the flexible duct glass fiber cloth multi-layer glue coating composite laser glue control and thickness measuring device provided by the present application is shown in the figure.

[0025] BRIEF DESCRIPTION OF DRAWINGS: 1, detection mechanism; 11, fixed seat; 111, connecting sleeve; 12, connecting frame; 13, equipment rack; 14, driven gear; 15, fixed rack assembly; 151, connecting shaft; 152, rack; 16, worm gear; 17, first servo motor; 18, worm; 2, laser generating assembly; 3, cloth guide roller group; 31, movable roller part; 311, connecting rod; 312, connecting seat; 313, spring; 314, first guide roller; 315, electric push rod; 32, fixed roller part; 321, fixed block; 322, second guide roller; 4, support table; 41, support frame; 5, sliding table; 51, outer shell; 52, reciprocating screw rod; 53, second servo motor; 54, guide rod; 55, sliding seat. DETAILED DESCRIPTION

[0026] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, and uses. It should be understood that throughout the drawings, the same or like reference numerals are used to depict the same or like components and features. The various drawings are schematic illustrations of embodiments of the present disclosure and are not necessarily drawn to scale. Certain portions of the drawings can be shown exaggerated in size, or drawn without respect to certain proportions, for purposes of explanation.

[0027] The embodiment 1 is a laser-controlled gluing and thickness measuring device for flexible duct glass fiber cloth multi-layer gluing composite, comprising: a detection mechanism 1, the detection mechanism 1 comprises a fixed seat 11, the outer surface of the fixed seat 11 is hingedly connected with a connecting frame 12, the outer surface of the connecting frame 12 is rotationally connected with an equipment frame 13, a plurality of laser generating assemblies 2 are circumferentially distributed on one end of the equipment frame 13, the laser generating assemblies 2 are used for acquiring reflection signals of each glue layer of the glass fiber cloth in real time, the other end of the equipment frame 13 is fixedly connected with a driven gear 14, the connecting point of the connecting frame 12 and the equipment frame 13 is slidingly connected with a fixed rack assembly 15, and the fixed rack assembly 15 is engaged with the driven gear 14; a cloth guide roller set 3 is distributed on both sides of the detection mechanism 1 and is used for guiding the glass fiber cloth.

[0028] For example, the glass fiber cloth passes through the detection mechanism 1 below the cloth guide roller set 3, and the laser generating assemblies 2 emit laser beams of different wavelengths to detect the thicknesses of different gluing layers on the glass fiber cloth.

[0029] Further, the laser-controlled gluing and thickness measuring device further comprises: a support table 4, the surface of the support table 4 is fixedly connected with a support frame 41; and a sliding table 5, the sliding table 5 is assembled on the top of the support frame 41, the output part of the sliding table 5 is fixedly connected with the detection mechanism 1, and the sliding table 5 is used for driving the detection mechanism 1 to reciprocatingly translate.

[0030] Specifically, the sliding table 5 comprises: an outer shell 51, the outer shell 51 is fixedly connected with the top of the support frame 41; a reciprocating screw rod 52, both ends of the reciprocating screw rod 52 are rotationally connected with the outer shell 51; a second servo motor 53, the second servo motor 53 is fixedly connected with the outer shell 51, and the output end of the second servo motor 53 is fixedly connected with the reciprocating screw rod 52; guide rods 54, the guide rods 54 are distributed on both sides of the reciprocating screw rod 52 and are fixedly connected with the outer shell 51; a sliding seat 55, both ends of the sliding seat 55 are slidingly connected with the guide rods 54, the middle part of the sliding seat 55 is threadedly connected with the reciprocating screw rod 52, the bottom of the sliding seat 55 penetrates through the outer shell 51 and is slidingly connected with the outer shell 51, and the fixed seat 11 is fixedly connected with the bottom of the sliding seat 55; the second servo motor 53 drives the reciprocating screw rod 52 to rotate, so that the sliding seat 55 reciprocatingly slides on the guide rods 54, thereby driving the detection mechanism 1 to reciprocatingly move.

[0031] Specifically, the outer surface of the fixed seat 11 is rotationally connected with a connecting sleeve 111, both ends of the connecting sleeve 111 are penetrated, the connecting frame 12 is rotationally connected with the fixed seat 11 through the connecting sleeve 111, the connecting frame 12 is fixed on the connecting sleeve 111, and the connecting sleeve 111 is rotationally connected with the fixed seat 11; the fixed rack assembly 15 comprises a connecting shaft 151 and a rack 152, both ends of the connecting shaft 151 and the rack 152 are fixedly connected, both ends of the connecting shaft 151 are rotationally connected with the support frame 41, the driven gear 14 is engaged with the rack 152, the connecting shaft 151 penetrates the connecting sleeve 111, and the connecting sleeve 111 is slidingly connected with the connecting shaft 151, the inner part of the connecting sleeve 111 is fixed with a protrusion, and the outer surface of the connecting shaft 151 is provided with a groove in sliding connection with the protrusion; when the connecting sleeve 111 rotates, the connecting shaft 151 can be driven to rotate through the cooperation of the protrusion and the groove, and the sliding of the fixed seat 11 on the connecting shaft 151 is not affected, when the fixed seat 11 slides with the connecting frame 12 and the equipment frame 13, the equipment frame 13 will be driven to rotate by the driven gear 14 because the rack 152 is fixed and the driven gear 14 is engaged with the rack 152.

[0032] Further, the end of the connecting sleeve 111 is sleeved with a worm gear 16, the outer surface of the fixed seat 11 is fixed with a first servo motor 17, the output end of the first servo motor 17 is fixed with a worm 18, and the worm 18 is engaged with the worm gear 16; the worm 18 is driven to rotate by the first servo motor 17, the worm 18 drives the worm gear 16 to rotate, the worm gear 16 drives the connecting frame 12 to rotate through the connecting sleeve 111, thereby driving the equipment frame 13 and the laser generating assembly 2 on the equipment frame 13 to overturn, and adjusting the angle of the detection glass fiber cloth.

[0033] The cloth guide roller set 3 comprises movable roller pieces 31 and fixed roller pieces 32, the fixed roller pieces 32 are distributed on both sides of the movable roller pieces 31, and the movable roller pieces 31 are at least two, the two movable roller pieces 31 are distributed on both sides of the detection mechanism 1, and the movable roller piece 31 comprises: a connecting rod 311 fixed on the support table 4; a connecting seat 312 slidingly connected with the connecting rod 311 at both ends; a spring 313 sleeved on the connecting rod 311, and both ends of the spring 313 are respectively abutted with the support table 4 and the connecting seat 312; a first guide roller 314 rotationally connected with the connecting seat 312 at both ends; and an electric push rod 315 fixed at one end on the support table 4 and fixedly connected with the connecting seat 312 at the other end; the height of the first guide roller 314 can be adjusted by sliding the connecting seat 312 on the connecting rod 311 through the electric push rod 315, so as to control the tension of the glass fiber cloth passing through the cloth guide roller set 3.

[0034] Further, the fixed roller piece 32 comprises: a fixed block 321 fixed on the support table 4; and a second guide roller 322 rotationally connected with the fixed block 321 at both ends.

[0035] The embodiment 2 is a laser-controlled gluing and thickness measuring device for the multi-layered gluing composite of the glass fiber cloth for flexible air pipe, which further comprises a tension detection unit, a strain measurement module and a thickness cloud map generation module based on the embodiment 1, wherein each module is connected through wired and / or wireless connection;

[0036] The tension detection unit comprises a fiber grating sensor array arranged on the guide roller group 3 for real-time monitoring of the warp and weft tension, which are respectively marked as and The change rate of the warp and weft tension is calculated based on the formulas and The central difference method is adopted, and the specific calculation method is known in the art, which will not be described in detail herein. If the local tension is too large, the glass fiber cloth is easy to stretch, so the upstream roller speed is reduced and the downstream roller speed is increased to release the stress. If the tension is too small, the glass fiber cloth is easy to wrinkle, and the reverse adjustment is made to ensure the flatness of the glass fiber cloth and improve the accuracy of the thickness measurement.

[0037] The strain measurement module comprises a laser speed meter and an encoder for calculating the strain rate of the glass fiber cloth, which is marked as The encoder is used to collect the reference length of the glass fiber cloth before stretching, which is marked as , that is, the encoder is installed at the inlet of the coating equipment of the glass fiber cloth. For example, before the coating starts, the glass fiber cloth is manually pulled to a tension-free state, the encoder is reset to zero, the initial pulse number is recorded, and low-speed operation (such as 0.1 m / s) is started. The initial length is calculated by pulse accumulation .

[0038] The thickness cloud map generation module generates a two-dimensional thickness distribution map based on the time domain reflection formula. Specifically, the thickness is marked as d, the thickness of each point is d(x, y), and the time domain reflection formula is used to calculate , wherein is the laser reflection time difference, and n is the refractive index of the glue layer. The discrete point thickness data is interpolated to generate a two-dimensional matrix, which is visualized through pseudo-color mapping, such as blue for thin and red for thick. The double cubic interpolation algorithm is used to smooth the noise and retain the details, so as to analyze whether the overall gluing is uniform.

[0039] Specifically, The calculation formula is: , wherein is the real-time length change amount, is the reference length of the glass fiber cloth before stretching. Specifically, the laser speed meter is arranged on the guide roller group 3 to measure the linear speed of the glass fiber cloth passing through the guide roller group 3, which is respectively marked as and The integral gives the real-time length change amount of the glass fiber cloth, that is, the difference between the current length and the initial length, which determines the stretching or contraction amount of the glass fiber cloth at this time, The specific calculation method is as follows: Wherein, t is a time variable, is a small time interval in the integral process, which is determined by the person skilled in the art according to the actual situation, and is not limited here;

[0040] Based on The thickness correction is carried out, and the thickness correction formula is Wherein, is the corrected thickness, is the original thickness measured by laser, is the Poisson's ratio of the adhesive layer, which is a material characteristic parameter provided by the adhesive supplier;

[0041] The purpose is that when the glass cloth has stretching or shrinking problems, it will affect the actual coating thickness, such as stretching, which will make the measured value of the coating thickness smaller than the actual coating thickness, and vice versa. By correcting the thickness, the accuracy of thickness detection is improved.

[0042] Further, the laser generating assembly 2 at least includes three types of laser generators, which respectively emit 405nm, 635nm and 1550nm three types of wavelength lasers; for example, through the three-wavelength laser generators 405nm blue light, 635nm red light and 1550nm infrared, the signal analysis is carried out, the blue light 405nm penetrates the surface adhesive and is reflected by the base adhesive, the red light 635nm is scattered in the reinforcing adhesive layer, and the infrared 1550nm is totally reflected by the glass cloth substrate. By time domain reflectometer, the optical path difference of each layer can be calculated, and the thickness of each layer of adhesive can be calculated, the specific calculation method is known to the public, and it will not be described here.

[0043] The above describes the exemplary embodiments of the scheme proposed by the present disclosure in detail with reference to the preferred embodiments, however, those skilled in the art can understand that various modifications and improvements can be made to the above specific embodiments without departing from the concept of the present disclosure, and various technical features and structures proposed by the present disclosure can be combined without exceeding the protection scope of the present disclosure, the protection scope of the present disclosure is determined by the appended claims.

Claims

1. A laser-controlled glue measuring and thickness device for a flexible duct glass fiber cloth multi-layer glue coating composite, characterized in that, Include: Detection mechanism (1), the detection mechanism (1) includes fixed seat (11), the outer surface of the fixed seat (11) is hinged with connecting frame (12), the outer surface of the connecting frame (12) is rotatably connected with equipment frame (13), one end of the equipment frame (13) is circumferentially distributed with a plurality of laser generating components (2), the laser generating components (2) are used for real-time acquisition of each adhesive layer reflection signal of glass fiber cloth, the other end of the equipment frame (13) is fixed with driven gear (14), the connecting point of the connecting frame (12) and the equipment frame (13) is slidably connected with fixed rack assembly (15), and the fixed rack assembly (15) is engaged with the driven gear (14); cloth guide roller group (3) is distributed on both sides of the detection mechanism (1) and is used for guiding the glass fiber cloth; The outer surface of the fixed seat (11) is rotatably connected with the connecting sleeve (111), both ends of the connecting sleeve (111) are penetrated, and the connecting sleeve (111) is rotatably connected with the fixed seat (11) through the connecting sleeve (111); The fixed rack assembly (15) comprises a connecting shaft (151) and a rack (152), both ends of the connecting shaft (151) and the rack (152) are fixedly connected, the connecting shaft (151) penetrates the connecting sleeve (111), and the connecting sleeve (111) is slidably connected with the connecting shaft (151); The inside of the connecting sleeve (111) is fixed with a protrusion, and the outer surface of the connecting shaft (151) is provided with a groove slidably connected with the protrusion; The end of the connecting sleeve (111) is sleeved with a worm wheel (16), the outer surface of the fixed seat (11) is fixedly connected with a first servo motor (17), the output end of the first servo motor (17) is fixedly connected with a worm (18), and the worm (18) is engaged with the worm wheel (16).

2. The laser controlled gluing and measuring thickness device for the fiberglass cloth multi-layer gluing composite of the flexible air pipe according to claim 1, characterized in that, Also include: Supporting table (4), the surface is fixedly connected with supporting frame (41); sliding table (5), assembled on the top of supporting frame (41), the output part of the sliding table (5) is fixedly connected with detection mechanism (1), and the sliding table (5) is used for driving the reciprocating translation of the detection mechanism (1).

3. The laser controlled gluing and measuring thickness device for the fiberglass cloth multi-layer gluing composite of the flexible air pipe according to claim 2, characterized in that, The sliding table (5) comprises: an outer shell (51) fixed to the top of the supporting frame (41); a reciprocating screw rod (52) rotatably connected with the outer shell (51) at both ends; a second servo motor (53) fixed to the outer shell (51), and the output end of the second servo motor (53) is fixedly connected with the reciprocating screw rod (52); a guide rod (54) distributed on both sides of the reciprocating screw rod (52) and fixedly connected with the outer shell (51); a sliding seat (55) slidably connected with the guide rod (54) at both ends, threadedly connected with the reciprocating screw rod (52) at the middle part, and the bottom of the sliding seat (55) penetrates the outer shell (51) and is slidably connected with the outer shell (51), and the fixed seat (11) is fixed to the bottom of the sliding seat (55).

4. The laser controlled gluing and measuring thickness device for the fiberglass cloth multi-layer gluing composite of the flexible duct according to claim 2, characterized in that, The cloth guide roller set (3) comprises movable roller pieces (31) and fixed roller pieces (32), the fixed roller pieces (32) are distributed on both sides of the movable roller pieces (31), and the movable roller pieces (31) are at least two in number and are distributed on both sides of the detection mechanism (1).

5. The laser controlled gluing and measuring thickness device for the fiberglass cloth multi-layer gluing composite of the flexible duct according to claim 4, characterized in that, The movable roller piece (31) comprises a connecting rod (311) fixed on a support table (4), connecting seats (312) in sliding connection with the connecting rod (311) at both ends, springs (313) sleeved on the connecting rod (311) and in abutment with the support table (4) and the connecting seat (312) at both ends respectively, first guide rollers (314) in rotary connection with the connecting seat (312) at both ends, and electric push rods (315) fixed at one end on the support table (4) and fixedly connected with the connecting seat (312) at the other end.

6. The laser controlled gluing and measuring thickness device for the fiberglass cloth multi-layer gluing composite of flexible duct according to claim 4, characterized in that, The fixed roller piece (32) comprises a fixed block (321) fixed on the support table (4) and second guide rollers (322) in rotary connection with the fixed block (321) at both ends.

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