CN212603551U

CN212603551U - Continuous cutting device for pultrusion composite material internally implanted with FBG sensor

Info

Publication number: CN212603551U
Application number: CN202022014161.XU
Authority: CN
Inventors: 吕晓轩; 智杰颖; 宋英俊; 杨禹; 袁立业
Original assignee: Shanxi Institute of Coal Chemistry of CAS
Current assignee: Shanxi Institute of Coal Chemistry of CAS
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-02-26
Anticipated expiration: 2030-09-15

Abstract

The utility model belongs to combined material preparation and nondestructive monitoring field, concretely relates to continuous cutting device of pultrusion combined material of interior implantation FBG sensor. The device comprises a device fixing frame, a lifting device, a longitudinal slide rail, a transverse cutting system and a longitudinal cutting system; the transverse cutting system comprises a primary transverse guide rail, a primary limiting device, a transverse extending arm, a transverse cutting knife wheel and a driving motor, wherein the direction of a cutting edge of the transverse cutting knife wheel is perpendicular to the conveying direction of the composite material; the longitudinal cutting system comprises a secondary transverse guide rail, a secondary limiting device, a longitudinal extending arm, a longitudinal cutting knife wheel and a driving motor, wherein the direction of a knife edge of the longitudinal cutting knife wheel is parallel to the conveying direction of the composite material. The problem that the lead connector of the fiber grating sensor on the preset length is difficult to lead out in the pultrusion continuous manufacturing process is effectively solved.

Description

Continuous cutting device for pultrusion composite material internally implanted with FBG sensor

Technical Field

The utility model belongs to combined material preparation and nondestructive monitoring field, concretely relates to continuous cutting device of pultrusion combined material of interior implantation FBG sensor.

Background

With the continuous acceleration of social economy and urbanization, the construction of national engineering facilities and urban infrastructure has been rapidly developed in the past period, and many buildings, bridges and engineering structures have been put into use for decades or even longer. As the use time of these infrastructures increases, the aging of the infrastructure and the safety risk of the infrastructure increases, so that the monitoring of the state of the infrastructure and the maintenance and repair of the infrastructure become important issues to be faced in the next social development.

The molding process of the carbon fiber reinforced composite material unidirectional plate is to impregnate fibers with resin, then solidify the fibers in a mold and continuously perform pultrusion molding. The carbon fiber reinforced composite material has the characteristics of high tensile strength, good corrosion resistance, good shock resistance, good impact resistance and the like, can give full play to the strength and the elastic modulus of the carbon fiber, and has wide application in the aspects of shear reinforcement and prestress reinforcement of bridges and tunnels. With the continuous progress of reinforcing and reinforcing technology and the continuous development of on-line monitoring technology, the implantation of sensors in the pultrusion composite material plate structure for the on-line monitoring of the structure health of facilities has become a key development direction in the field of building reinforcement.

The Fiber Bragg Grating (FBG) sensor has the characteristics of simple structure, strong electromagnetic interference resistance, convenience for implantation, easiness in forming a net and the like, and has obvious advantages in-situ online monitoring compared with metal strain gauges and other types of sensors. Of course, the FBG sensor has some disadvantages, the most important of which is that the optical fiber has poor shear resistance, and the grating region is used as a measurement sensitive component, which is fragile and easy to break, and once the grating region of the grating is broken, the monitoring signal is interrupted, which undoubtedly brings great difficulty to the implantation of the FBG sensor in the composite material pultruded plate, the sensor lead wire and the continuous production of the composite material unidirectional plate.

In order to solve the above problems, a series of researches have been carried out in recent years, and specifically, patent 200810217549.0 discloses a system and a method for embedding a fiber grating sensor in a fiber polymer composite material, wherein a single optical fiber is introduced into a fiber bundle from an introduction die and passes through a pultrusion die together. Such a solution does not allow for pre-tensioning of the FBG sensor fiber, which makes it difficult to precisely locate the FBG sensor in the composite material during the implantation process. Patent 200910057487.6 discloses a preparation system and method of fiber grating combined material intelligence muscle, this utility model combines pultrusion and compression molding's characteristics, implant two preforming body intermediate positions with the FBG sensor to at both ends processing connector, this kind of scheme reduces production efficiency on the one hand, on the other hand, when being applied to pultrusion panel, because panel thickness is compared in the diameter of muscle material little very much, minimum thickness is only 0.9mm-1.4mm, and be difficult for the pin joint of formula of burying in the embedding of optic fibre both ends. Patent 201710223794.1 discloses a system and method for continuous implantation of fiber grating into pultruded composite materials, which adds a pre-stretching device to avoid breaking of the fiber in the fiber grating implantation system, but does not consider the problem of the FBG sensor fiber lead being led out from the cut end face of the composite material. The smooth leading-out of the optical fiber lead at the cut section of the composite material is a necessary premise for realizing the stable signal transmission of the FBG sensor and the continuous manufacturing of the composite material pultruded plate.

In summary, there is a need for a continuous manufacturing apparatus and a cutting device for a pultrusion composite material plate with an internally implanted FBG sensor, which is significant for realizing stable implantation and continuous manufacture of the FBG sensor in the pultrusion composite material.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the key problem of main purpose and solution provides a continuous cutting device of pultrusion combined material of interior implantation FBG sensor, is guaranteeing under the prerequisite that the FBG sensor survived smoothly at the combined material pultrusion in-process, realizes the serialization of the pultrusion combined material panel of interior implantation FBG sensor and makes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a continuous cutting device of pultrusion composite material internally planted with FBG sensors comprises: the device comprises a fixed frame, a lifting device, a longitudinal slide rail, a transverse cutting system and a longitudinal cutting system;

the device fixing frame is used for fixing the cutting device and conveying the formed composite material; the lifting device is connected below the top surface of the fixed frame of the device and is used for controlling the feeding of the cutter assembly in the vertical direction; the longitudinal slide rail is connected below the lifting device and used for driving the cutter assembly to move in the front-back direction and feed and cut; the transverse cutting system is connected to the longitudinal slide rail and is used for transverse cutting of the pultrusion composite material perpendicular to the traction direction; the longitudinal cutting system is connected to the longitudinal sliding rail, arranged behind the transverse cutting system and used for longitudinally cutting the pultrusion composite material along the traction direction after the pultrusion composite material is transversely cut. Through the two-stage cutting system perpendicular to the traction direction and along the traction direction, the transverse and longitudinal cutting feed amount of the composite material plate can be accurately controlled, the composite material plate with the embedded FBG sensor is accurately cut, and the damage of the FBG sensor in the forming process of the intelligent pultrusion composite material and the brittle failure of the optical fiber lead along the cutting part are effectively avoided.

Further, device fixed frame includes fixed baseplate, frame stand and upper portion apron, fixed baseplate is equipped with the material conveyer trough, the inside material that is provided with of material conveyer trough carries the deflector roll. The material conveying groove and the conveying guide roller are convenient for continuous conveying of the high-temperature formed composite material, continuous cutting of the formed composite material plate is guaranteed, and preparation efficiency of the composite material plate is improved.

Furthermore, the lifting device is driven by electricity and comprises a front group of lifting upright posts and a rear group of lifting upright posts, wherein the two groups of lifting upright posts lift synchronously in the operation process, and a descending limiting device is arranged. The synchronous lifting of the lifting upright posts ensures that the composite material plate is cut synchronously by the two groups of cutting tools in the cutting process, thereby being beneficial to controlling the cutting precision of the composite material and protecting the FBG sensor and the optical fiber lead from inactivation or brittle failure caused by cutting size errors.

Further, the transverse cutting system comprises a primary transverse guide rail, a primary limiting device, a transverse extending arm, a transverse cutting knife wheel and a first driving motor; one-level transverse guide connects in vertical slide rail lower part, one-level transverse guide below is arranged in to one-level stop device, can follow one-level transverse guide both ends edge and remove to the center, and the minimum distance between two horizontal cutting knife flywheel of one-level stop device restriction is 2mm, transversely stretches to be connected through transverse rotating shaft between arm and the one-level stop device, transversely stretches the arm and can rotate around transverse rotating shaft, transversely cut knife flywheel and first driving motor, install respectively in the front and back both sides that transversely stretches the arm, cut the horizontal cutting knife flywheel of in-process first driving motor drive and rotate, transversely cuts knife flywheel installation cutting edge direction perpendicular to combined material direction of delivery. Through the injecture of one-level stop device to two horizontal cutterhead minimum intervals, can further guarantee to cut the process and attach the combined material position that has FBG sensor and optic fibre lead wire and can not take place the damage, simultaneously, through the settlement of minimum interval, unnecessary combined material of excision that can the at utmost provides convenience for the back processing process optic fibre lead wire is from peeling off in the combined material.

Furthermore, the thickness of the cutting edge of the transverse cutting knife wheel is 0.6-0.8 mm. Select this blade thickness can satisfy the demand that cuts of combined material panel on the one hand, and the process of cutting can not take place easily and cut the break of cutting edge wheel edge, and on the other hand, suitable blade scope can obviously improve the cutting precision, protects FBG sensor and optic fibre lead wire.

Further, the longitudinal cutting system comprises a secondary transverse guide rail, a secondary limiting device, a longitudinal extending arm, a longitudinal cutting knife wheel and a second driving motor; the second-stage transverse guide rail is connected to the lower portion of the longitudinal sliding rail, the left second-stage limiting device and the right second-stage limiting device are arranged on the second-stage transverse guide rail and used for adjusting the distance between the two longitudinal cutting knife wheels, the second-stage limiting device limits the minimum distance between the two longitudinal cutting knife wheels to be 2mm, the longitudinal extending arm is connected with the second-stage limiting device through a longitudinal rotating shaft, the longitudinal extending arm can rotate around the longitudinal rotating shaft, the longitudinal cutting knife wheels and the second driving motor are respectively installed on two sides of the longitudinal extending arm, the second driving motor drives the longitudinal cutting knife wheels to rotate in the cutting process, and the mounting knife edge direction of the longitudinal cutting knife wheels is parallel to the conveying direction of the composite material.

Furthermore, the thickness of the cutting edge of the longitudinal cutting knife wheel is 0.6-0.8 mm.

A cutting method of a continuous cutting device of a pultrusion composite material internally implanted with fiber bragg gratings comprises the steps of firstly carrying out transverse cutting after a formed composite material enters a cutting station, controlling a lifting device to move downwards, simultaneously enabling a transverse cutting knife wheel to run under the driving of a first driving motor, feeding and cutting from edges at two ends to the central part of a composite material plate, stopping cutting at a part close to the internally implanted fiber bragg gratings, and keeping the internally implanted fiber leads continuous; after transverse cutting, longitudinal cutting of the composite material plate is carried out, the distance between two longitudinal cutting knife wheels is adjusted to be 2mm, after longitudinal cutting, the composite material at the other parts except the local area of the embedded optical fiber lead is cut, and smooth leading-out of the optical fiber lead at the composite material section is ensured.

Compared with the prior art, the utility model has the advantages of it is following:

the utility model discloses an interior pultrusion combined material's of planting FBG sensor continuous cutting device has effectively solved the problem that the pin joint of fiber grating sensor on predetermined length is difficult to draw forth in the pultrusion serialization manufacturing process. Under the condition of ensuring that the pultrusion efficiency is not obviously reduced, the adverse effect of a built-in joint method on the mechanical property of the composite material pultruded plate is eliminated. The utility model discloses a device and manufacturing process method only need simpler optic fibre pretreatment and shaping combined material's aftertreatment process, can accomplish FBG sensor's implantations and lead wire, provide a reliable stable technical scheme for the manufacturing of intelligent pultrusion combined material panel.

Drawings

FIG. 1 is an overall schematic view of a continuous cutting apparatus;

FIG. 2 is a front view of the continuous cutting apparatus;

fig. 3 is a side view of the continuous cutting apparatus.

Wherein, 1 is a device fixing frame, 2 is a lifting device, 3 is a longitudinal slide rail, 4 is a transverse cutting system, and 5 is a longitudinal cutting system; 101 is a fixed base, 102 is a frame upright post, 103 is an upper cover plate, 104 is a material conveying groove, and 105 is a material conveying guide roller; 201 is a lifting upright post, and 202 is a descending limiting device; 401 is a primary transverse guide rail, 402 is a primary limiting device, 403 is a transverse extending arm, 404 is a transverse cutting knife wheel, 405 is a first driving motor, and 406 is a transverse rotating shaft; 501 is a secondary transverse guide rail, 502 is a secondary limiting device, 503 is a longitudinal extending arm, 504 is a longitudinal cutting knife wheel, 505 is a second driving motor, and 506 is a longitudinal rotating shaft.

Detailed Description

The invention will be further elucidated with reference to the drawings. It should be noted that the following description is only for explaining the present invention, and the content thereof is not limited.

As shown in fig. 1, 2 and 3, a continuous cutting device for pultrusion composite material internally implanted with FBG sensors comprises: the device comprises a device fixing frame 1, a lifting device 2, a longitudinal slide rail 3, a transverse cutting system 4 and a longitudinal cutting system 5;

the device fixing frame 1 is used for fixing the cutting device and conveying the formed composite material; the device fixing frame 1 comprises a fixing base 101, a frame upright 102 and an upper cover plate 103, wherein the fixing base 101 is provided with a material conveying groove 104, and a material conveying guide roller 105 is arranged in the material conveying groove.

The lifting device 2 is connected below the top surface of the device fixing frame 1 and used for controlling the feeding of the cutter assembly in the vertical direction; the lifting device 2 is driven by electricity and comprises a front lifting upright column 201 and a rear lifting upright column 201, wherein the two lifting upright columns 201 lift synchronously in the operation process and are provided with a descending limiting device 202.

The longitudinal slide rail 3 is connected below the lifting device 2 and used for driving the cutter assembly to move in the front-back direction and feed and cut;

the transverse cutting system 4 is connected to the longitudinal slide rail 3 and is used for transverse cutting of the pultrusion composite material perpendicular to the traction direction; the transverse cutting system 4 comprises a primary transverse guide rail 401, a primary limiting device 402, a transverse extending arm 403, a transverse cutting knife wheel 404 and a first driving motor 405; the one-level transverse guide rail 401 is connected to the lower portion of the longitudinal slide rail 3, the one-level limiting device 402 is arranged below the one-level transverse guide rail 401 and can move towards the center along the edges of two ends of the one-level transverse guide rail 401, the one-level limiting device 402 limits the minimum distance between the two transverse cutting knife wheels 404 to be 2mm, the transverse extending arm 403 is connected with the one-level limiting device 402 through a transverse rotating shaft 406, the transverse extending arm 403 can rotate around the transverse rotating shaft 406, the transverse cutting knife wheels 404 and the first driving motor 405 are respectively installed on the front side and the rear side of the transverse extending arm 403, the first driving motor 405 drives the transverse cutting knife wheels 404 to rotate in the cutting process, the installation knife edge direction of the transverse cutting knife wheels 404 is perpendicular to the conveying direction of the composite material, and the thickness of the cutting edge of the transverse cutting knife wheels 404 is 0.6-.

The longitudinal cutting system 5 is connected to the longitudinal sliding rail 3, is arranged behind the transverse cutting system 4, and is used for longitudinally cutting the pultrusion composite material along the traction direction after the transverse cutting. The longitudinal cutting system 5 comprises a secondary transverse guide rail 501, a secondary limiting device 502, a longitudinal extending arm 503, a longitudinal cutting knife wheel 504 and a second driving motor 505; the two-stage transverse guide rail 501 is connected to the lower portion of the longitudinal slide rail 3, the left two-stage limiting device 502 and the right two-stage limiting device 502 are arranged on the two-stage transverse guide rail 501 and used for adjusting the distance between the two longitudinal cutting knife wheels 504, the two-stage limiting device 502 limits the minimum distance between the two longitudinal cutting knife wheels 504 to be 2mm, the longitudinal extending arm 503 is connected with the two-stage limiting device 502 through a longitudinal rotating shaft 506, the longitudinal extending arm 503 can rotate around the longitudinal rotating shaft 506, the longitudinal cutting knife wheels 504 and a second driving motor 505 are respectively arranged on two sides of the longitudinal extending arm, the second driving motor 505 drives the longitudinal cutting knife wheels 504 to rotate in the cutting process, the blade mounting direction of the longitudinal cutting knife wheels 504 is parallel to the composite material conveying direction, and the blade thickness of the longitudinal cutting knife wheels 504 is 0.6-0.8 mm.

After the formed composite material enters a cutting station, firstly carrying out transverse cutting, controlling a lifting device 2 to move downwards, simultaneously driving a transverse cutting knife wheel 404 to operate under the driving of a first driving motor 405, feeding the composite material from the edges of two ends to the central part of the composite material for cutting, stopping cutting at the part close to the embedded fiber bragg grating, and keeping the continuous fiber lead wire embedded inside; after transverse cutting is finished, longitudinal cutting of the composite material is carried out, the distance between the two longitudinal cutting knife wheels 504 is adjusted to be 2mm, after the longitudinal cutting, the composite material at the other parts except the local area of the embedded optical fiber lead wire at the section of the composite material is cut, and smooth leading-out of the optical fiber lead wire at the section of the composite material is ensured.

Claims

1. The utility model provides a continuous cutting device of pultrusion combined material of embedded FBG sensor which characterized in that includes: the device comprises a device fixing frame (1), a lifting device (2), a longitudinal slide rail (3), a transverse cutting system (4) and a longitudinal cutting system (5);

the device fixing frame (1) is used for fixing the cutting device and conveying the formed composite material;

the lifting device (2) is connected below the top surface of the device fixing frame (1) and is used for controlling the feeding of the cutter assembly in the vertical direction;

the longitudinal slide rail (3) is connected below the lifting device (2) and is used for driving the cutter assembly to move in the front-back direction and feed for cutting;

the transverse cutting system (4) is connected to the longitudinal slide rail (3) and is used for transverse cutting of the pultrusion composite material perpendicular to the traction direction;

the longitudinal cutting system (5) is connected to the longitudinal sliding rail (3), arranged behind the transverse cutting system (4) and used for longitudinally cutting the pultrusion composite material along the traction direction after the transverse cutting.

2. The continuous cutting device for pultruded composite materials with embedded FBG sensors according to claim 1, characterized in that the device fixing frame (1) comprises a fixing base (101), a frame upright (102) and an upper cover plate (103), the fixing base (101) is provided with a material conveying groove (104), and a material conveying guide roller (105) is arranged inside the material conveying groove.

3. The continuous cutting device for the pultrusion composite material internally implanted with the FBG sensors as claimed in claim 1, characterized in that the lifting device (2) is driven by electricity and comprises a front lifting upright column and a rear lifting upright column (201), the two lifting upright columns (201) are lifted synchronously in the operation process, and a descending limiting device (202) is arranged.

4. The continuous cutting device of pultruded composite material with embedded FBG sensors according to claim 1, characterized in that the transverse cutting system (4) comprises a primary transverse guide rail (401), a primary limiting device (402), a transverse extending arm (403), a transverse cutting wheel (404) and a first driving motor (405);

the one-level transverse guide rail (401) is connected in the lower portion of the longitudinal slide rail (3), the one-level limiting device (402) is arranged below the one-level transverse guide rail (401) and can move towards the center along the edges of the two ends of the one-level transverse guide rail (401), the one-level limiting device (402) limits the minimum distance between the two transverse cutting knife wheels (404) to be 2mm, the transverse extending arm (403) and the one-level limiting device (402) are connected through a transverse rotating shaft (406), the transverse extending arm (403) can rotate around the transverse rotating shaft (406), the transverse cutting knife wheels (404) and the first driving motor (405) are respectively installed on the front side and the rear side of the transverse extending arm (403), the first driving motor (405) drives the transverse cutting knife wheels (404) to rotate in the cutting process, and the direction of the installation knife edge of the transverse cutting knife wheels (404) is perpendicular to the conveying direction of the composite material.

5. The continuous cutting device for the pultrusion composite material internally planted with the FBG sensors as claimed in claim 4, characterized in that the cutting edge thickness of the transverse cutting knife wheel (404) is 0.6-0.8 mm.

6. The continuous cutting device for the pultruded composite material with embedded FBG sensors according to claim 1, characterized in that the longitudinal cutting system (5) comprises a secondary transverse guide rail (501), a secondary limiting device (502), a longitudinal extending arm (503), a longitudinal cutting knife wheel (504) and a second driving motor (505);

the two-stage transverse guide rail (501) is connected to the lower portion of the longitudinal sliding rail (3), the left and right two-stage limiting devices (502) are arranged on the two-stage transverse guide rail (501) and used for adjusting the distance between the two longitudinal cutting knife wheels (504), the two-stage limiting devices (502) limit the minimum distance between the two longitudinal cutting knife wheels (504) to be 2mm, the longitudinal extending arm (503) is connected with the two-stage limiting devices (502) through a longitudinal rotating shaft (506), the longitudinal extending arm (503) can rotate around the longitudinal rotating shaft (506), the longitudinal cutting knife wheels (504) and the second driving motor (505) are respectively installed on two sides of the longitudinal extending arm, the second driving motor (505) drives the longitudinal cutting knife wheels (504) to rotate in the cutting process, and the installation blade direction of the longitudinal cutting knife wheels (504) is parallel to the conveying direction of the composite material.

7. The continuous cutting device for the pultrusion composite material internally planted with the FBG sensors as claimed in claim 6, characterized in that the cutting edge thickness of the longitudinal cutting knife wheel (504) is 0.6-0.8 mm.