Glass fabric multi-layer gluing composite laser glue controlling and thickness measuring device for flexible air pipe

Abstract

The invention discloses a glass fabric multi-layer gluing composite laser glue control and thickness measurement device for a flexible air pipe, and relates to the field of laser thickness measurement. According to the technical scheme, the device comprises a detection mechanism, the detection mechanism comprises a fixing base, a connecting frame is hinged to the outer surface of the fixing base, an equipment frame is rotationally connected to the outer surface of the connecting frame, and a plurality of laser generating assemblies are circumferentially distributed at one end of the equipment frame; the laser generating assembly is used for obtaining reflection signals of all adhesive layers of the glass fabric in real time, a driven gear is fixed to the other end of the equipment frame, a fixed rack assembly is slidably connected to the connecting point of the connecting frame and the equipment frame, and the fixed rack assembly is meshed with the driven gear. According to the utility model, the plurality of laser generating assemblies are circumferentially distributed on the equipment frame, and the plurality of laser generating assemblies adopt different types of laser generators to emit laser with different wavelengths, so that the thicknesses of different adhesive layers can be measured at the same time.

Description

Technical Field

[0001] The present invention relates to the field of laser thickness measurement, in particular to a glass fiber cloth multi-layer glue coating composite laser glue control thickness measurement device for flexible air ducts. Background Art

[0002] The glass fiber cloth used in flexible duct processing needs to be coated with glue during processing, and the number of glue layers includes multiple layers. It is particularly important to measure the thickness after gluing. This can not only analyze the current gluing quality, but also improve the glue output based on these data analysis; At present, the thickness measurement method is to measure the thickness by laser. For example, the publication number CN107289871A discloses an online detection device for the thickness of glue in a glue coating production line, which includes: a glue thickness detection mechanism for detecting the glue thickness of the glued material in real time and synchronously capturing the width of the glued material; a driving mechanism for driving the glue thickness detection mechanism to move along the width direction of the glued material; a control mechanism for receiving the width signal and glue thickness signal of the glued material sent by the glue thickness detection mechanism, and controlling the driving mechanism to drive the glue thickness detection mechanism to move along the width direction of the glued material according to the width signal of the glued material, and at the same time converting the glue thickness signal of the glued material into glue thickness data and displaying it; This patent detects the thickness of the glue layer by reciprocatingly moving the glue thickness detection mechanism. However, it cannot detect the thickness of multiple layers of glue in real time, and its detection range is single-point, that is, the detection path and detection angle are uncontrollable. This will result in regular detection points, and frequent problems outside the detection points cannot be detected, affecting the detection reliability. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to propose a composite laser glue control and thickness measurement device for multi-layer glue coating of glass fiber cloth for flexible air ducts, so as to realize multi-point detection and simultaneous detection of multiple layers of glue, thereby improving detection reliability.

[0004] In order to achieve the above technical objectives, the present invention provides a glass fiber cloth multi-layer glue coating composite laser glue control and thickness measurement device for flexible air ducts: It includes: a detection mechanism, which includes a fixed seat, a connecting frame hinged on the outer surface of the fixed seat, an equipment frame rotatably connected to the outer surface of the connecting frame, a plurality of laser generating components distributed circumferentially at one end of the equipment frame, and the laser generating components are used to obtain the reflection signals of each adhesive layer of the glass fiber cloth in real time, a driven gear is fixed to the other end of the equipment frame, a fixed rack component is slidably connected to the connection point between the connecting frame and the equipment frame, and the fixed rack component is engaged with the driven gear; a cloth guide roller group is distributed on both sides of the detection mechanism and is used to guide the glass fiber cloth.

[0005] Preferably, it also includes: a support table with a support frame fixed on the surface; a slide table assembled on the top of the support frame, the output part of the slide table is fixedly connected to the detection mechanism, and the slide table is used to drive the detection mechanism to reciprocate.

[0006] Preferably, the slide includes: a shell, fixed to the top of the support frame; a reciprocating screw, with both ends respectively connected to the shell for rotation; a second servo motor, fixed on the shell, and the output end of the second servo motor is fixedly connected to the reciprocating screw; a guide rod, distributed on both sides of the reciprocating screw and fixedly connected to the shell; a slide, with both ends slidingly connected to the guide rod, the middle part is threadedly connected to the reciprocating screw, and the bottom of the slide passes through the shell and is slidingly connected to the shell, and the fixed seat is fixed to the bottom of the slide.

[0007] Preferably, a connecting sleeve is rotatably connected to the outer surface of the fixing seat, two ends of the connecting sleeve are through-connected, and the connecting frame is rotatably connected to the fixing seat through the connecting sleeve.

[0008] Preferably, the fixed rack assembly includes a connecting shaft and a rack, the connecting shaft and the rack are fixedly connected at both ends, the connecting shaft passes through a connecting sleeve, and the connecting sleeve is slidably connected to the connecting shaft.

[0009] Preferably, a protrusion is fixed inside the connecting sleeve, and a groove is formed on the outer surface of the connecting shaft for sliding connection with the protrusion.

[0010] Preferably, a worm gear is sleeved on the end of the connecting sleeve, a first servo motor is fixed to the outer surface of the fixing seat, a worm is fixed to the output end of the first servo motor, and the worm is meshed with the worm gear.

[0011] Preferably, the cloth guide roller group includes a movable roller member and a fixed roller member, the fixed roller members are distributed on both sides of the movable roller member, at least two movable roller members are provided, and the two movable roller members are distributed on both sides of the detection mechanism.

[0012] Preferably, the movable roller component includes: a connecting rod, fixed on the support platform; a connecting seat, both ends of which are slidably connected to the connecting rod; a spring, sleeved on the connecting rod, and the two ends of the spring are respectively against the support platform and the connecting seat; a first guide roller, both ends of which are rotatably connected to the connecting seat; an electric push rod, one end of which is fixed on the support platform, and the other end is fixedly connected to the connecting seat.

[0013] Preferably, the fixed roller member includes: a fixed block fixed on the support platform; and a second guide roller, both ends of which are rotatably connected to the fixed block.

[0014] It can be seen from the above technical solutions that this application has the following beneficial effects: By distributing multiple laser generating components in a circular pattern on the equipment frame, and using different types of laser generators to emit lasers of different wavelengths, the thickness of different adhesive layers can be measured simultaneously. Moreover, when the detection mechanism reciprocates, the equipment frame can rotate to adjust the positions of the multiple laser generating components, and the equipment frame can flip to control the detection angle, thereby realizing multi-point detection and simultaneous detection of multiple layers of adhesive, thereby improving detection reliability. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 1 This is a schematic diagram of the overall structure of a glass fiber cloth multi-layer glue coating composite laser glue control and thickness measurement device for flexible air ducts provided by the present invention; Figure 2 A schematic diagram of the overall structure of a detection mechanism of a multi-layered glass fiber cloth adhesive-coated composite laser adhesive control and thickness measurement device for flexible air ducts provided by the present invention; Figure 3 A schematic diagram of the front view of the detection mechanism of a multi-layer glass fiber cloth glue-coated composite laser glue control and thickness measurement device for flexible air ducts provided by the present invention; Figure 4 A schematic diagram of the overall structure of the movable roller of a multi-layer glass fiber cloth glue coating composite laser glue control and thickness measurement device for flexible air ducts provided by the present invention; Figure 5 This is a schematic diagram of the overall structure of the fixed roller of a glass fiber cloth multi-layer glue coating composite laser glue control and thickness measurement device for flexible air ducts provided by the present invention.

[0017] Description of the drawings: 1. Detection mechanism; 11. Fixed seat; 111. Connecting sleeve; 12. Connecting frame; 13. Equipment frame; 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; 311. Connecting rod; 312. Connecting seat; 313. Spring; 314. First guide roller; 315. Electric push rod; 32. Fixed roller; 321. Fixed block; 322. Second guide roller; 4. Support table; 41. Support frame; 5. Slide; 51. Housing; 52. Reciprocating screw; 53. Second servo motor; 54. Guide rod; 55. Slide. DETAILED DESCRIPTION

[0018] The following description is merely illustrative in nature and is not intended to limit the present disclosure, its applications, or uses. It should be understood that throughout the drawings, identical or similar reference numerals indicate identical or similar parts and features. The drawings merely schematically illustrate the concepts and principles of the embodiments of the present disclosure and do not necessarily depict the specific dimensions and proportions of the various embodiments of the present disclosure. Certain portions of certain drawings may be exaggerated to illustrate relevant details or structures of the embodiments of the present disclosure.

[0019] Embodiment 1, a multi-layer glue-coated composite laser glue control and thickness measurement device for glass fiber cloth for flexible air ducts, comprising: a detection mechanism 1, the detection mechanism 1 includes a fixed seat 11, the outer surface of the fixed seat 11 is hingedly connected to a connecting frame 12, the outer surface of the connecting frame 12 is rotatably connected to an equipment frame 13, one end of the equipment frame 13 is circumferentially distributed with multiple laser generating components 2, the laser generating components 2 are used to obtain the reflection signals of each glue layer of the glass fiber cloth in real time, the other end of the equipment frame 13 is fixed with a driven gear 14, the connection point between the connecting frame 12 and the equipment frame 13 is slidably connected to a fixed rack component 15, and the fixed rack component 15 is engaged with the driven gear 14; a cloth guide roller group 3 is distributed on both sides of the detection mechanism 1, and is used to guide the glass fiber cloth.

[0020] For example, the glass fiber cloth passes under the detection mechanism 1 through the cloth guide roller group 3, and the laser generating component 2 emits lasers of different wavelengths to detect the thickness of different adhesive layers on the glass fiber cloth.

[0021] Furthermore, it also includes: a support table 4, a support frame 41 is fixed on the surface; a slide 5, assembled on the top of the support frame 41, the output part of the slide 5 is fixedly connected to the detection mechanism 1, and the slide 5 is used to drive the detection mechanism 1 to move back and forth.

[0022] Specifically, the slide 5 includes: a shell 51, fixed to the top of the support frame 41; a reciprocating screw rod 52, both ends of which are rotatably connected to the shell 51; a second servo motor 53, fixed on the shell 51, and the output end of the second servo motor 53 is fixedly connected to the reciprocating screw rod 52; a guide rod 54, distributed on both sides of the reciprocating screw rod 52 and fixedly connected to the shell 51; a slide 55, both ends of which are slidably connected to the guide rod 54, the middle part is threadedly connected to the reciprocating screw rod 52, and the bottom of the slide 55 passes through the shell 51 and is slidably connected to the shell 51, the fixed seat 11 is fixed to the bottom of the slide 55, and the reciprocating screw rod 52 is driven to rotate by the second servo motor 53, so that the slide 55 slides back and forth on the guide rod 54, thereby driving the detection mechanism 1 to reciprocate.

[0023] Specifically, the outer surface of the fixed seat 11 is rotatably connected with a connecting sleeve 111, and the two ends of the connecting sleeve 111 are passed through. The connecting frame 12 is rotatably connected to 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 rotatably connected to the fixed seat 11; the fixed rack assembly 15 includes a connecting shaft 151 and a rack 152, and the two ends of the connecting shaft 151 and the rack 152 are fixedly connected. The two ends of the connecting shaft 151 are rotatably connected to the support frame 41, and the driven gear 14 is meshed with the rack 152. The connecting shaft 151 passes through the connecting sleeve 11. 1, and the connecting sleeve 111 is slidably connected to the connecting shaft 151, a protrusion is fixed inside the connecting sleeve 111, and a groove is provided on the outer surface of the connecting shaft 151 for sliding connection with the protrusion; the purpose is that when the connecting sleeve 111 rotates, the connecting shaft 151 can be driven to rotate by the cooperation of the protrusion and the groove, and the sliding of the fixing base 11 on the connecting shaft 151 is not affected. When the fixing base 11 slides with the connecting frame 12 and the equipment frame 13, since the rack 152 is fixed and the driven gear 14 is engaged with the rack 152, the equipment frame 13 will be rotated by the driven gear 14.

[0024] Furthermore, a worm gear 16 is sleeved on the end of the connecting sleeve 111, a first servo motor 17 is fixed to the outer surface of the fixing seat 11, a worm 18 is fixed to the output end of the first servo motor 17, and the worm 18 is engaged with the worm gear 16; illustratively, the worm 18 is driven to rotate by the first servo motor 17, the worm 18 drives the worm gear 16 to rotate, and 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 flip, and adjust the angle of the detection fiberglass cloth.

[0025] The cloth guide roller group 3 includes a movable roller member 31 and a fixed roller member 32. The fixed roller members 32 are distributed on both sides of the movable roller member 31. There are at least two movable roller members 31, and the two movable roller members 31 are distributed on both sides of the detection mechanism 1. The movable roller member 31 includes: a connecting rod 311, fixed on the support platform 4; a connecting seat 312, both ends of which are slidably connected to the connecting rod 311; a spring 313, sleeved on the connecting rod 311, and the two ends of the spring 313 are respectively against the support platform 4 and the connecting seat 312; a first guide roller 314, both ends of which are rotatably connected to the connecting seat 312; an electric push rod 315, one end of which is fixed on the support platform 4, and the other end is fixedly connected to the connecting seat 312; illustratively, by pushing the connecting seat 312 to slide on the connecting rod 311 by the electric push rod 315, the height of the first guide roller 314 can be adjusted, thereby controlling and adjusting the tension of the glass fiber cloth when passing through the cloth guide roller group 3.

[0026] Furthermore, the fixed roller member 32 includes a fixed block 321 fixed on the support platform 4 ; and a second guide roller 322 , both ends of which are rotatably connected to the fixed block 321 .

[0027] Example 2, a glass fiber cloth multi-layer glue coating composite laser glue control and thickness measurement device for flexible air ducts, based on Example 1, further includes a tension detection unit, a strain measurement module, and a thickness cloud map generation module, wherein the modules are connected to each other via wired and / or wireless connections; The tension detection unit includes a fiber grating sensor array, which is arranged on the cloth guide roller group 3 and is used to monitor the warp and weft tension in real time, and is marked as and ,based on and The rate of change of tension in the warp and weft directions is calculated using a formula using the central difference method. The specific calculation method is a known public technology and will not be elaborated on here. If excessive local tension is detected, the fiberglass cloth will be easily stretched, so the upstream roller speed is reduced and the downstream roller speed is increased to release the stress. If the tension is too low, the fiberglass cloth will easily wrinkle, so the reverse adjustment is made to ensure the flatness of the fiberglass cloth and improve the accuracy of thickness measurement. The strain measurement module, including the laser velocimeter and encoder, is used to calculate the strain rate of the glass fiber cloth, marked as The encoder is used to collect the reference length of the fiberglass cloth when it is not stretched, marked as , that is, the encoder is installed at the entrance of the glass fiber cloth coating equipment; 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 0.1m / s) is started, and the initial length is calculated by pulse accumulation. .

[0028] 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, and the thickness of each point is d(x,y). It is calculated by the time domain reflection formula. ,in , is the laser reflection time difference, and n is the refractive index of the adhesive layer; the discrete point thickness data are interpolated to generate a two-dimensional matrix, which is visualized through pseudo-color mapping, such as blue for thin and red for thick. The bicubic interpolation algorithm is used to smooth the noise and retain the details. The purpose is to analyze whether the overall adhesive coating is uniform.

[0029] Specifically, The calculation formula is: ,in, is the real-time length change, is the reference length of the glass fiber cloth when it is not stretched. Specifically, the laser speed meter is arranged on the cloth guide roller group 3 to measure the linear speed of the glass fiber cloth passing through the cloth guide roller group 3, which is marked as and , the real-time length change of the glass fiber cloth is obtained by integration, that is, the difference between the current length and the initial length, and the glass fiber cloth is judged to be stretched or contracted at this time. The specific calculation method is: Where t is the time variable, It is a small time interval during the integration process, which is determined by those skilled in the art according to actual conditions and is not specifically limited here; based on Perform thickness correction. The thickness correction formula is: ,in, is the corrected thickness, For laser measurement of original thickness, Poisson's ratio of the adhesive layer is a material characteristic parameter provided by the adhesive supplier; The purpose is to correct the thickness and improve the accuracy of thickness detection by correcting the thickness.

[0030] Furthermore, the laser generating assembly 2 includes at least three types of laser generators, which respectively emit three types of wavelength lasers of 405nm, 635nm and 1550nm; illustratively, through the three-wavelength laser generator, 405nm blue light, 635nm red light and 1550nm infrared light correspond to the absorption peaks of the base glue, reinforcing glue and surface glue respectively, and signal analysis shows that the 405nm blue light penetrates the surface glue and is reflected by the base glue, the 635nm red light is scattered in the reinforcing glue layer, and the 1550nm infrared light is totally reflected by the glass fiber cloth base. The thickness of each layer of glue can be calculated by calculating the optical path difference of each layer through a time domain reflectometer. The specific calculation method is a known public technology and will not be elaborated on here.

[0031] The exemplary implementation schemes proposed in the present disclosure are described in detail above with reference to preferred embodiments. However, it will be understood by those skilled in the art that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present disclosure can be combined in various ways without exceeding the scope of protection of the present disclosure, which is determined by the appended claims.

Claims

1. A multi-layer glass fiber cloth glue coating composite laser glue control and thickness measurement device for flexible air ducts, characterized in that: include: A detection mechanism (1), the detection mechanism (1) includes a fixed seat (11), the outer surface of the fixed seat (11) is hinged with a connecting frame (12), the outer surface of the connecting frame (12) is rotatably connected to an 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 to obtain the reflection signals of each adhesive layer of the glass fiber cloth in real time, the other end of the equipment frame (13) is fixed with a driven gear (14), the connection point between the connecting frame (12) and the equipment frame (13) is slidably connected with a fixed rack component (15), and the fixed rack component (15) is meshed with the driven gear (14); The cloth guide roller group (3) is distributed on both sides of the detection mechanism (1) and is used to guide the glass fiber cloth.

2. The device for multi-layer glue coating and composite laser glue control and thickness measurement of glass fiber cloth for flexible air duct according to claim 1 is characterized in that: Also includes: A support platform (4) having a support frame (41) fixed on its surface; The slide (5) is assembled on the top of the support frame (41), and the output portion of the slide (5) is fixedly connected to the detection mechanism (1). The slide (5) is used to drive the detection mechanism (1) to move back and forth.

3. The device for multi-layer glue coating and composite laser glue control and thickness measurement of glass fiber cloth for flexible air duct according to claim 2, characterized in that: The slide (5) comprises: A housing (51) is fixed to the top of the support frame (41); A reciprocating screw rod (52), both ends of which are rotatably connected to the housing (51); A second servo motor (53) is fixed to the housing (51), and an output end of the second servo motor (53) is fixedly connected to the reciprocating screw (52); Guide rods (54) are distributed on both sides of the reciprocating screw rod (52) and are fixedly connected to the housing (51); The sliding seat (55) is slidably connected to the guide rod (54) at both ends and is threadedly connected to the reciprocating screw rod (52) in the middle. The bottom of the sliding seat (55) passes through the housing (51) and is slidably connected to the housing (51). The fixed seat (11) is fixed to the bottom of the sliding seat (55).

4. The device for multi-layer glue coating and composite laser glue control and thickness measurement of glass fiber cloth for flexible air duct according to claim 1, characterized in that: The outer surface of the fixing seat (11) is rotatably connected to a connecting sleeve (111), both ends of the connecting sleeve (111) are connected, and the connecting frame (12) is rotatably connected to the fixing seat (11) via the connecting sleeve (111).

5. The device for multi-layer glue coating and composite laser glue control and thickness measurement of glass fiber cloth for flexible air duct according to claim 4, characterized in that: The fixed rack assembly (15) comprises a connecting shaft (151) and a rack (152), wherein both ends of the connecting shaft (151) and the rack (152) are fixedly connected, the connecting shaft (151) passes through the connecting sleeve (111), and the connecting sleeve (111) is slidably connected to the connecting shaft (151).

6. The glass fiber cloth multi-layer glue coating composite laser glue control and thickness measurement device for flexible air ducts according to claim 5, characterized in that: A protrusion is fixed inside the connecting sleeve (111), and a groove is provided on the outer surface of the connecting shaft (151) for sliding connection with the protrusion.

7. The device for multi-layer glue coating and composite laser glue control and thickness measurement of glass fiber cloth for flexible air duct according to claim 4, characterized in that: A worm gear (16) is sleeved on the end of the connecting sleeve (111), a first servo motor (17) is fixed to the outer surface of the fixing seat (11), a worm (18) is fixed to the output end of the first servo motor (17), and the worm (18) is meshed with the worm gear (16).

8. The glass fiber cloth multi-layer glue coating composite laser glue control and thickness measurement device for flexible air ducts according to claim 2, characterized in that: The cloth guide roller group (3) comprises a movable roller member (31) and a fixed roller member (32), wherein the fixed roller member (32) is distributed on both sides of the movable roller member (31), and at least two movable roller members (31) are provided, and the two movable roller members (31) are distributed on both sides of the detection mechanism (1).

9. The glass fiber cloth multi-layer glue coating composite laser glue control and thickness measurement device for flexible air ducts according to claim 8, characterized in that: The movable roller (31) comprises: A connecting rod (311) is fixed on the support platform (4); A connecting seat (312), both ends of which are slidably connected to the connecting rod (311); A spring (313) is sleeved on the connecting rod (311), and two ends of the spring (313) are respectively against the support platform (4) and the connecting seat (312); A first guide roller (314), both ends of which are rotatably connected to the connecting seat (312); One end of the electric push rod (315) is fixed on the support platform (4), and the other end is fixedly connected to the connecting seat (312).

10. The glass fiber cloth multi-layer glue coating composite laser glue control and thickness measurement device for flexible air ducts according to claim 8, characterized in that: The fixed roller member (32) comprises: A fixed block (321) is fixed on the support platform (4); Both ends of the second guide roller (322) are rotatably connected to the fixed block (321).

Images