Photoelectric position detection deviation correction method for traveling material and glass fiber cloth surface treatment unit

Abstract

This invention provides a photoelectric position detection and correction method for moving materials and a fiberglass cloth surface treatment unit, relating to the field of photoelectric measurement technology. It solves the problem of materials easily failing quality and being discarded when the correction sensor fails. The method is applied to a production unit with a correction system, including acquiring the position detection signal output by the photoelectric sensor detecting the edge position of the material's wide side; obtaining and recording the relative offset between the material's wide side edge and the photoelectric sensor based on the position detection signal; correcting the offset based on the relative offset; and, during the process, determining in real time whether the photoelectric sensor is faulty. If so, an adjacent, unfailed photoelectric sensor upstream of the faulty sensor is used as a reference object. Based on the relative offset corresponding to the reference object, the correction actuator associated with the faulty photoelectric sensor performs the correction action. This can, to a certain extent, control the offset between the material and the faulty photoelectric sensor within a certain range, thereby improving the fault tolerance rate of the processed materials.

Description

Technical Field

[0001] This invention relates to the field of photoelectric measurement technology, specifically to a method for ensuring the collimated transmission of moving materials by using photoelectric sensors for position detection and correction, and a fiberglass cloth surface treatment unit designed based on this method. Background Technology

[0002] Some raw materials require necessary surface treatments before product manufacturing. During the material processing, the material is transferred from one end of the unit to the other, undergoing sequential processing by a series of equipment within the unit before being collected.

[0003] As materials move through the unit, they will shift to the left or right relative to the centerline of the unit. In order to ensure that the relative position of the processing equipment and the materials in the relevant processes remains stable, the relevant technology equips the processing equipment with a deviation correction sensor and a deviation correction actuator. The deviation correction sensor detects the amount of deviation of the materials relative to the processing equipment during the material transmission process, and the deviation correction actuator corrects the deviation in a timely manner.

[0004] In technologies such as CN219757226U and DE10045261B4, material conveying processes may experience deviations along the material's transport direction. Optical correction sensors are needed to detect the offset at the material's width and correct it accordingly. In actual production, the material sequentially passes through different optical correction sensors, with each sensor detecting and correcting the offset at a specific stage to ensure proper surface treatment at the correct position in each process.

[0005] If the optical correction sensor fails, the material offset cannot be detected and corrected before entering the corresponding process, which will cause the material that has already started surface treatment to be easily discarded due to substandard quality. Summary of the Invention

[0006] The purpose of this invention is to design a photoelectric position detection and correction method for moving materials and a fiberglass cloth surface treatment unit to solve the problem that materials that have already undergone surface treatment are easily discarded due to substandard quality when the correction sensor fails.

[0007] This invention is achieved through the following technical solution:

[0008] This invention provides a photoelectric position detection and correction method for moving materials. This method is applied to a production unit with a correction system. The correction system includes multiple photoelectric sensors and multiple correction actuators arranged sequentially along the material conveying direction. The correction actuators are associated with the photoelectric sensors in a one-to-one correspondence to form a photoelectric correction device.

[0009] Includes the following steps:

[0010] Obtain the position detection signal output by the photoelectric sensor detecting the position of the wide edge of the material;

[0011] The relative offset between the wide edge of the material and the photoelectric sensor is obtained based on the position detection signal and recorded.

[0012] Based on the relative offset, the photoelectric sensor is checked in real time during the correction process to determine if it has failed.

[0013] If so, the adjacent photoelectric sensor that is not faulty and located upstream of the faulty photoelectric sensor is used as a reference object, and the correction actuator associated with the faulty photoelectric sensor performs a correction action according to the relative offset corresponding to the reference object.

[0014] When the above method is used, after the photoelectric sensor fails, the corresponding correction actuator performs a correction action based on the relative offset of the unfailed photoelectric sensor located upstream, so as to continue to perform compensatory correction on the material. This can control the offset between the material and the failed photoelectric sensor within a certain range to a certain extent, thereby improving the fault tolerance rate of the processed material, ensuring the yield rate, and reducing the situation of discarding due to substandard surface treatment of the material.

[0015] Furthermore, a photoelectric sensor is provided on the upstream side of the photoelectric correction device located at the very upstream end.

[0016] Furthermore, the production unit also includes a plurality of material handling devices arranged sequentially along the material conveying direction, and the correction actuator is connected to the associated photoelectric sensor and a plurality of the material handling devices;

[0017] The correction actuator performs the correction action by driving the connected photoelectric sensor and the material handling equipment to move synchronously relative to the wide edge of the material.

[0018] Furthermore, the step of performing a correction action by the correction actuator associated with the failed photoelectric sensor based on the relative offset corresponding to the reference object includes:

[0019] Based on the k consecutive relative offsets obtained from the k position detection signals continuously output by the reference object since the failure time, the correction actuator associated with the failed photoelectric sensor is controlled to sequentially perform correction actions after a delay of Δt.

[0020] Alternatively, based on the k consecutive relative offsets obtained from the k position detection signals continuously output by the reference object within Δt before the failure time, the correction actuator associated with the failed photoelectric sensor is controlled to sequentially perform correction actions from the failure time.

[0021] Where Δt = ΔL / v, ΔL is the material transport distance between the failed photoelectric sensor and the reference object, and v is the material transport speed from the moment of failure.

[0022] Furthermore, when the relative offsets obtained from the k consecutive position detection signals continuously output by the reference object within Δt before the failure time are used to control the correction actuator associated with the failed photoelectric sensor to sequentially perform correction actions from the failure time; the correction stroke made by the correction actuator associated with the failed photoelectric sensor from the failure time is obtained by the following formula:

[0023] A i =α i +W;

[0024] Where, α i The relative offset is obtained based on the i-th position detection signal output by the reference object within Δt before the failure time, and W is the correction stroke compensation value, which is obtained by the following formula:

[0025]

[0026] Where, β i The relative offset γ is obtained based on the i-th position detection signal output by the failed photoelectric sensor within Δt before the failure time. i It corresponds to β i The weight, γ i+1 >γ i .

[0027] Furthermore, the production unit triggers an alarm when the photoelectric sensor fails and stops after a delay T, wherein T is greater than the duration for the correction actuator associated with the failed photoelectric sensor to complete at least one correction action.

[0028] The present invention also provides a fiberglass cloth surface treatment unit for realizing the above-mentioned photoelectric position detection and correction method for moving materials;

[0029] The fiberglass cloth surface treatment unit serves as a production unit, including a conveyor line and a correction system.

[0030] The conveyor line is used to transport materials;

[0031] The correction system includes a controller, a frame, multiple photoelectric sensors, and multiple correction actuators. Each correction actuator is associated with a photoelectric sensor to form a photoelectric correction device. All photoelectric correction devices are arranged sequentially along the conveyor line. The fixed end of the correction actuator is connected to the frame, and the correction actuator and the photoelectric sensor are electrically connected to the controller.

[0032] The controller is used to acquire the position detection signal output by the photoelectric sensor detecting the edge position of the material's wide side, and to obtain the relative offset between the edge of the material's wide side and the photoelectric sensor based on the position detection signal. The controller can determine in real time whether the photoelectric sensor is malfunctioning based on whether the position detection signal can be acquired, and then control the corresponding correction actuator to perform correction actions based on the relative offset.

[0033] If so, the controller takes the adjacent, non-failed photoelectric sensor located upstream of the failed photoelectric sensor as a reference object, retrieves the relative offset corresponding to the reference object, and controls the correction actuator associated with the failed photoelectric sensor to perform a correction action.

[0034] To further improve the implementation of the present invention, the following structure is specifically adopted: the fiberglass cloth surface treatment unit further includes multiple material processing devices for processing the wide edge of the material, the material processing devices including a first material processing device and a second material processing device;

[0035] The actuator of the correction actuator is connected to the associated photoelectric sensor;

[0036] The first material handling device and the second material handling device are respectively connected to the execution end of a different one of the correction actuators.

[0037] To further improve the implementation of the present invention, the following configuration is specifically adopted: the first material processing device is configured as an adhesive applicator to apply adhesive to the wide edge of the material to form an adhesive area, and the second material processing device is configured as a cutter to cut off the outer area of ​​the adhesive area.

[0038] To further improve the implementation of this invention, the following configuration structure is adopted: the correction actuator is configured as an electric push rod.

[0039] To further improve the implementation of the present invention, the following configuration structure is adopted: the fiberglass cloth surface treatment unit further includes an impregnation device, a squeezing roller, a drying box and an infrared drying box arranged sequentially along the conveyor line, wherein the infrared drying box is located between the first material processing equipment and the second material processing equipment.

[0040] The present invention has the following advantages and beneficial effects:

[0041] In this invention, after a photoelectric sensor fails, the corresponding correction actuator performs a correction action based on the relative offset of the unfailed photoelectric sensor located upstream, in order to continue to perform compensatory correction on the material. This can control the offset between the material and the failed photoelectric sensor within a certain range to a certain extent, thereby improving the fault tolerance rate of the processed material, ensuring the yield rate, and reducing the situation of discarding materials due to substandard surface treatment. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a flowchart of a photoelectric position detection and correction method for moving materials;

[0044] Figure 2 These are schematic diagrams of the correction system in some embodiments;

[0045] Figure 3 The layout of the conveyor line and the correction system is shown in some embodiments;

[0046] Figure 4 The layout of the second material handling device with photoelectric sensors and materials is shown in some embodiments;

[0047] Figure 5 It shows Figure 4 Top view of the structure shown;

[0048] Figure 6 It shows Figure 4 Side view of the structure shown.

[0049] The diagram is marked as follows:

[0050] 10. Fiberglass cloth surface treatment unit; 11. Immersion device; 12. Squeezing roller; 13. Drying oven; 14. Infrared drying oven;

[0051] 20. Correction system; 21. Photoelectric correction device; 211. Photoelectric sensor; 212. Correction actuator; 22. Controller; 23. Frame;

[0052] 31. Unwinder; 32. Rewinder;

[0053] 40. Materials;

[0054] 51. First material handling equipment; 52. Second material handling equipment;

[0055] 60. Glue application area; 61. Outer area. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0057] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0058] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0059] On the one hand, this application provides a photoelectric position detection and correction method for moving materials:

[0060] This method is applied to the production unit to correct the relative position between material 40 and photoelectric sensor 211, allowing the material 40 to complete the correction action even with a malfunctioning photoelectric sensor 211, thus maintaining it within a suitable range. The production unit includes a conveyor line and a correction system 20.

[0061] The conveyor line is used to transport material 40.

[0062] The correction system 20 includes multiple photoelectric sensors 211 and multiple correction actuators 212. All photoelectric sensors 211 are arranged sequentially along the material transport direction, and all correction actuators 212 are also arranged sequentially along the material transport direction. At the same time, the correction actuators 212 and photoelectric sensors 211 are associated one-to-one to form a photoelectric correction device 21, so that all photoelectric correction devices 21 are arranged sequentially along the material transport direction, that is, the photoelectric correction devices 21 are placed at a certain position in the material transport direction. It can detect and calculate the degree of offset of the wide edge position of the material 40 at this point, and correct the offset according to the calculated offset.

[0063] The method includes the following steps:

[0064] Step S01: The photoelectric sensor 211 located at the wide edge of the material 40 is used to continuously detect the position of the wide edge of the material 40, and the position detection signal output by the photoelectric sensor 211 is obtained.

[0065] In some embodiments, reference Figure 4 and Figure 5 The photoelectric sensor 211 is set at one of the wide edges of the material 40 to detect the degree of offset of one side of the material 40.

[0066] For example, refer to Figure 3 and Figure 4 The photoelectric sensor 211 adopts a slotted photoelectric correction sensor.

[0067] Step S02: Calculate and record the relative offset between the wide edge of the material 40 and each photoelectric sensor 211 based on the acquired position detection signal.

[0068] Step S03: Correct the offset based on the relative offset, and during the correction process, determine in real time whether the photoelectric sensor 211 has failed.

[0069] If not, all photoelectric sensors 211 can continuously output position detection signals normally. In this case, normal correction is performed on each photoelectric correction device 21. Specifically, based on the relative offset, the corresponding correction actuator 212 performs the correction action. For example, referencing... Figure 3The figure shows two upstream and downstream photoelectric correction devices 21. Each photoelectric correction device 21 includes an associated photoelectric sensor 211 and a correction actuator 212. When the relative offset is obtained based on the position detection signal output by the photoelectric sensor 211 of the upstream photoelectric correction device 21, the correction actuator 212 of the upstream photoelectric correction device 21 performs the correction action accordingly. When the relative offset is obtained based on the position detection signal output by the photoelectric sensor 211 of the downstream photoelectric correction device 21, the correction actuator 212 of the downstream photoelectric correction device 21 performs the correction action accordingly.

[0070] If so, the failed photoelectric sensor 211 will be unable to output a position detection signal or will not be able to output a normal position detection signal. In this case, the photoelectric correction device 21 for the failed photoelectric sensor 211 will perform reference correction, while the photoelectric correction device 21 for the unfailed photoelectric sensor 211 will perform normal correction. Specifically, the adjacent unfailed photoelectric sensor 211 located upstream of the failed photoelectric sensor 211 will be used as a reference object. Based on the relative offset corresponding to the reference object, the correction actuator 212 associated with the failed photoelectric sensor 211 will perform the correction action.

[0071] In this way, after the photoelectric sensor 211 fails, the corresponding correction actuator 212 can perform a correction action based on the relative offset of the unfailed photoelectric sensor 211 located upstream, so as to continue to perform compensatory correction for the material 40. This can control the offset between the material 40 and the failed photoelectric sensor 211 within a certain range to a certain extent. This will improve the fault tolerance rate of the processed material 40, ensure the yield rate, and reduce the situation of being discarded due to substandard surface treatment of the material.

[0072] In some optional embodiments, even after the upstream photoelectric correction device 21's photoelectric sensor 211 fails, the associated correction actuator 212 can still continue correction. Specifically, refer to... Figure 3 A photoelectric sensor 211 is installed upstream of the photoelectric correction device 21. This newly added photoelectric sensor 211 is the same as the photoelectric sensor 211 in the photoelectric correction device 21. It is located at the wide edge of the material 40 and can continuously detect the position of the wide edge of the material 40 and output a position detection signal.

[0073] Step S01, acquiring the position detection signal output by the photoelectric sensor 211 at the edge of the material 40 width, including:

[0074] Step S011: Obtain the position detection signal output by the photoelectric sensor 211 in the photoelectric correction device 21.

[0075] Step S012: Obtain the position detection signal output by the photoelectric sensor 211 located upstream of the upstream photoelectric correction device 21.

[0076] Step S02: Calculate and record the relative offset between the wide edge of the material 40 and each photoelectric sensor 211 based on the acquired position detection signal, including:

[0077] Step S021: Based on the position detection signal obtained in step S011, calculate and record the relative offset between the wide edge of the material 40 and the corresponding photoelectric sensor 211 in each photoelectric correction device 21.

[0078] Step S022: Based on the photoelectric sensor 211 obtained in step S012, calculate and record the relative offset between the wide edge of the material 40 and the photoelectric sensor 211 located upstream of the upstream photoelectric correction device 21.

[0079] In some alternative embodiments, refer to Figure 3 The production unit can be the fiberglass cloth surface treatment unit 10 shown in the figure. The production unit is equipped with multiple material handling devices arranged in sequence along the material conveying direction. The correction actuator 212 is connected to the associated photoelectric sensor 211, and is also connected to several material handling devices.

[0080] In this embodiment, the correction actuator 212 performs the correction action by driving the connected photoelectric sensor 211 and the material handling equipment to synchronously displace relative to the edge of the wide side of the material 40. That is, the photoelectric correction device 21 directly drives the photoelectric sensor 211 and the material handling equipment to track the edge of the wide side of the material 40, so that the distance between them and the edge of the wide side of the material 40 is maintained within a preset range, ensuring that the material handling equipment can process the preset area on the material 40.

[0081] Of course, the production unit can also be other units besides the fiberglass cloth surface treatment unit 10, such as the fabric edge binding unit, the steel strip edge cutting unit, etc.

[0082] For example, the fixed end of the correction actuator 212 is mounted on the frame 23, and the photoelectric sensor 211 and the material handling equipment are connected to the execution end of the correction actuator 212. When the correction actuator 212 performs the correction action, the execution end of the correction actuator 212 moves, driving the photoelectric sensor 211 and the material handling equipment to move synchronously, simultaneously moving closer to or away from the wide edge of the material 40, thereby achieving correction.

[0083] The processing of material 40 by each material handling device may be the same or different. For example, the material handling device includes a first material handling device 51 that applies adhesive to the surface of material 40 and a second material handling device 52 that cuts material 40.

[0084] Of course, in some embodiments, the correction actuator 212 can also perform correction actions by conventionally driving the material to move relative to the photoelectric sensor 211 and the material handling equipment to adjust the distance between the material 40 and the photoelectric sensor 211 and the material handling equipment.

[0085] In some optional embodiments, step S03, in which the correction actuator 212 associated with the failed photoelectric sensor 211 performs a correction action based on the relative offset corresponding to the reference object, includes:

[0086] Step S031: Based on the k consecutive relative offsets corresponding to the reference object since the failure time, the corresponding control actuator 212 associated with the failed photoelectric sensor 211 sequentially performs the correction action after a delay Δt.

[0087] The failure time refers to the failure time of the failed photoelectric sensor 211; the k consecutive relative offsets are calculated based on the k position detection signals continuously output by the reference object from the failure time; Δt=ΔL / v, where ΔL is the material transfer distance between the failed photoelectric sensor and the reference object, and v is the material conveying speed from the failure time.

[0088] The specific number of k position detection signals continuously output by the photoelectric sensor 211 that fails from the moment of failure is determined by the detection frequency of the photoelectric sensor 211, which serves as the reference object.

[0089] When using step S031, after the photoelectric sensor 211 fails, the relative offset of the reference object corresponding to the failure time is retrieved sequentially. Considering the distance between the failed photoelectric sensor 211 and the reference object, a delay of Δt is required after retrieving the relative offset before the correction actuator 212 associated with the failed photoelectric sensor 211 begins to perform the correction action. Therefore, while waiting for the correction actuator 212 associated with the failed photoelectric sensor 211 to perform the correction action, it is necessary to tolerate the adverse result that the material 40 will not receive any correction operation from the failed photoelectric sensor 211 during the section between the failed photoelectric sensor 211 and the reference object. For example, if the material 40 deviates from the failed photoelectric sensor 211 by more than a preset range during this period, this section of material will be discarded due to substandard processing quality.

[0090] Therefore, step S032 is proposed as a preferred alternative implementation of step S031:

[0091] Step S032: Based on the k consecutive relative offsets of the reference object within Δt before the failure time, the correction actuator 212 associated with the failed photoelectric sensor 211 is controlled to sequentially perform correction actions starting from the failure time.

[0092] The failure time refers to the failure time of the failed photoelectric sensor 211; the k consecutive relative offsets are calculated based on the k position detection signals continuously output by the reference object within Δt before the failure time; Δt=ΔL / v, where ΔL is the material transfer distance between the failed photoelectric sensor and the reference object, and v is the material conveying speed from the failure time.

[0093] The specific number of k position detection signals continuously output by the photoelectric sensor 211 that fails from the moment of failure is determined by the detection frequency of the photoelectric sensor 211, which serves as the reference object.

[0094] When this step S031 is adopted, after the photoelectric sensor 211 fails, the relative offset of the reference object within Δt before the failure time is sequentially retrieved. Therefore, after the photoelectric sensor 211 fails, the correction actuator 212 associated with the failed photoelectric sensor 211 can continuously adjust the offset between the material 40 and the failed photoelectric sensor 211 and the material handling equipment. This better ensures the processing quality of the material that has traveled between the failed photoelectric sensor 211 and the reference object from the time of failure.

[0095] In some optional embodiments, step S032, based on the k consecutive relative offsets of the reference object within Δt before the failure time, controls the correction actuator 212 associated with the failed photoelectric sensor 211 to sequentially perform correction actions starting from the failure time, including:

[0096] From the moment of failure, the correction stroke performed by the correction actuator 212 associated with the failed photoelectric sensor 211 is obtained by the following formula:

[0097] A i =α i +W;

[0098] Where, α i It is the relative offset obtained based on the i-th position detection signal output by the reference object within Δt before the failure time, and W is the correction stroke compensation value, which is obtained by the following formula:

[0099] ;

[0100] Where, β iThe relative offset γ is obtained based on the i-th position detection signal output by the failed photoelectric sensor 211 within Δt before the failure time. i It corresponds to β i The weights are given, and the following relationship exists between the weights: γ i+1 >γ i .

[0101] In this embodiment, the correction stroke of the correction actuator 212 associated with the failed photoelectric sensor 211 is increased by a correction stroke compensation value W based on the correction stroke of the correction actuator 212 associated with the reference object. This allows for a more accurate determination of the correction stroke of the correction actuator 212 associated with the failed photoelectric sensor 211, and better ensures the processing quality of the material that travels between the failed photoelectric sensor 211 and the reference object from the moment of failure.

[0102] In some optional embodiments, the production unit triggers an alarm when the photoelectric sensor 211 fails and shuts down after a delay T. Here, T is a preset delay duration, which is greater than the time required for the correction actuator 212 associated with the failed photoelectric sensor 211 to complete at least one correction action.

[0103] Optionally, the alarm can emit an audible signal, such as a buzzer. In other optional embodiments, the alarm can emit an optical signal, such as an alarm light, so that personnel can visually determine whether the photoelectric sensor 211 has malfunctioned by observing the illumination of the alarm light.

[0104] In some alternative embodiments, material 40 is a strip or a wire. An exemplary material 40 is electronic fiberglass cloth.

[0105] On the other hand, this application provides a fiberglass cloth surface treatment unit 10 for implementing the photoelectric position detection and correction method for moving materials in any of the above embodiments.

[0106] like Figure 3 As shown, in this embodiment, the fiberglass cloth surface treatment unit 10 serves as a production unit, which includes a conveyor line and a web guiding system 20. The conveyor line is used to transport material 40, which is represented by a dashed line in the figure. The conveyor line includes an uncoiler 31 located at the beginning and a rewinder 32 located at the end.

[0107] The web guiding system 20 includes a controller 22, a frame 23, multiple photoelectric sensors 211, and multiple web guiding actuators 212. Each web guiding actuator 212 is associated with a photoelectric sensor 211 to form a photoelectric web guiding device 21. All photoelectric web guiding devices 21 are sequentially arranged along the conveyor line. In the photoelectric web guiding device 21, the associated photoelectric sensor 211 is located upstream of the web guiding actuator 212.

[0108] The fixed end of the correction actuator 212 is connected to the frame 23, which is fixed to the factory floor together with the fiberglass cloth surface treatment unit 10. The correction actuator 212 and the photoelectric sensor 211 are electrically connected to the controller 22. The controller 22 is used to acquire the position detection signal output by the photoelectric sensor 211 detecting the edge of the wide side of the material 40, and can calculate the relative offset between the edge of the wide side of the material 40 and the photoelectric sensor 211 based on the acquired position detection signal. Furthermore, the controller 22 can also determine in real time whether the photoelectric sensor 211 is malfunctioning based on whether a position detection signal can be acquired, and then control the corresponding correction actuator 212 to perform correction actions based on the relative offset.

[0109] If not (i.e., the photoelectric sensor 211 in the correction system 20 has not failed), the controller 22 controls each corresponding correction actuator 212 to perform the correction action according to the relative offset.

[0110] If (i.e., at least one photoelectric sensor 211 in the correction system 20 fails), the controller 22 takes the unfailed adjacent photoelectric sensor 211 located upstream of the failed photoelectric sensor 211 as a reference object, retrieves the relative offset corresponding to the reference object, and controls the correction actuator 212 associated with the failed photoelectric sensor 211 to perform the correction action.

[0111] As can be seen, the web guiding system 20 is specifically designed to track the edge of the material 40 in the width direction, and is used to control the offset between the material 40, the photoelectric sensor 211, and the material handling equipment during the winding process. The web guiding system 20 receives the position detection signal from the photoelectric sensor 211 through the controller 22, calculates the relative offset between the material and the photoelectric sensor 211 and the material handling equipment, and then outputs a drive signal based on the relative offset to drive the corresponding web guiding actuator 212 to perform the web guiding action, correcting the degree of deviation between the material 40 and the photoelectric sensor 211 and the material handling equipment, so that the material handling equipment can process the material 40 at the correct position.

[0112] According to some optional embodiments, the photoelectric sensor 211 is disposed at one of the wide edges of the material 40 to detect the degree of offset of one side of the material 40.

[0113] For example, such as Figure 3 , Figure 4 and Figure 6 As shown, the photoelectric sensor 211 is a slotted photoelectric correction sensor.

[0114] According to some alternative embodiments, material 40 is a strip or wire, such as electronic fiberglass cloth.

[0115] According to some optional embodiments, the fiberglass cloth surface treatment unit 10 is provided with multiple material processing devices for processing the wide edge of the material 40. All the material processing devices are arranged sequentially along the material conveying direction to process the wide edge of the material 40 sequentially.

[0116] The actuator 212 is connected to the associated photoelectric sensor 211 and is also connected to several material handling devices. When the actuator 212 performs the correction action, the actuator 212 moves, driving the photoelectric sensor 211 and the material handling devices to move synchronously, while moving closer to or away from the wide edge of the material 40, thus achieving correction.

[0117] Optional, such as Figure 3 As shown, the material handling equipment includes a first material handling device 51 and a second material handling device 52. The first material handling device 51 and the second material handling device 52 are respectively connected to the execution end of a different correction actuator 212. The processing of material 40 by the first material handling device 51 and the second material handling device 52 can be the same or different. For example, the first material handling device 51 is configured as an adhesive applicator to apply adhesive to the wide edge of the material to form an adhesive application area 60, and the second material handling device 52 is configured as a cutter to cut off the outer region 61 of the adhesive application area 60. Optionally, the cutter can be as follows: Figures 4-6 The circular saw blade shown. The first material handling device 51 includes a glue tank for storing edge-sealing adhesive and a glue-applying wheel assembly. The glue-applying wheel assembly includes a glue-applying wheel with its lower part immersed in the adhesive and a pressing wheel that abuts against the glue-applying wheel.

[0118] Of course, according to some alternative embodiments, the correction actuator 212 is not connected to the photoelectric sensor 211 and the material handling equipment, and the photoelectric sensor 211 and the material handling equipment are both fixed on the factory floor by a frame, and the correction actuator 212 is connected to some rollers in the conveyor line that conveys the material, and the distance between the wide edge of the material and the photoelectric sensor 211 and the material handling equipment at the corresponding position is adjusted by driving the rollers to move along their axis.

[0119] According to some optional embodiments, the area where the material handling equipment performs surface treatment on the material is the material handling area. Within the material handling area, the material handling equipment moves relative to the wide edge of the material by connecting and driving the photoelectric sensor 211 and the material handling equipment with the correction actuator 212. In the upstream or downstream areas outside the material handling area, the material is driven to move in a conventional way to ensure that the material is aligned and conveyed relative to the conveyor line. This avoids the problem of poor material winding quality caused by the material accumulating too much offset before entering or after leaving the material handling area, and the problem of the correction amount exceeding the maximum correction stroke of the correction actuator 212 within the material handling area, which would result in the inability to correct the material correctly.

[0120] According to some optional embodiments, the correction actuator 212 is configured as an electric push rod.

[0121] According to some optional embodiments, in addition to forming multiple photoelectric correction devices 21 in a one-to-one correspondence, all photoelectric sensors 211 and all correction actuators 212 also have a photoelectric sensor 211 disposed upstream of the most upstream photoelectric correction device 21. This photoelectric sensor 211, like the photoelectric sensors 211 in the photoelectric correction device 21, is located at the wide edge of the material 40 and can continuously detect the position of the wide edge of the material 40 and output a position detection signal. The controller 22 can acquire the position detection signal output by the photoelectric sensor 211 disposed upstream of the most upstream photoelectric correction device 21, and calculate and record the relative offset between the wide edge of the material 40 and the photoelectric sensor 211 disposed upstream of the most upstream photoelectric correction device 21 based on the acquired photoelectric sensor 211. This ensures that even if the photoelectric sensor 211 of the most upstream photoelectric correction device 21 fails, the associated correction actuator 212 can continue to correct the deviation under the control of the controller 22.

[0122] According to some optional embodiments, such as Figure 3 As shown, the fiberglass cloth surface treatment unit 10 includes a conveyor line and, sequentially arranged along the conveyor line, an impregnation device 11, a squeeze roller 12, a drying chamber 13, and an infrared drying chamber 14. The infrared drying chamber 14 is located between the first material processing device 51 and the second material processing device 52. The conveyor line includes an uncoiler 31 at the beginning and a rewinder 32 at the end.

[0123] like Figure 3 As shown, the impregnation device 11 includes an impregnation tank filled with coupling agent and multiple guide rollers arranged sequentially up and down along the material conveying direction, so that the material 40 can be folded back and forth in the impregnation tank, ensuring that the material 40 can be completely impregnated by the coupling agent.

[0124] Because the electronic fiberglass cloth blank woven by the loom needs to be dipped in coupling agent, dried and wound into rolls by the surface treatment unit before it can be supplied to downstream CCL (Copper Clad Laminate) manufacturers.

[0125] Therefore, the fiberglass cloth surface treatment unit 10 of this embodiment integrates the impregnation device 11, the squeeze roller 12, the drying box 13, and the infrared drying box 14. A first material processing device 51 is installed upstream and downstream of the infrared drying box 14 to apply adhesive to the wide edge of the material 40 to form an adhesive coating area 60, and a second material processing device 52 is installed to cut off the outer area 61 of the adhesive coating area 60 on the material 40. This adds edge sealing and edge cutting functions without affecting the original functions of the surface treatment unit, eliminating the need for additional equipment space for edge sealing. Edge sealing can be completed simultaneously during the electronic fiberglass cloth surface treatment process without increasing the number of operators. It features high production efficiency and saves manpower and space, making edge sealing cloth highly favored by CCL manufacturers and enhancing the market competitiveness and added value of electronic fiberglass cloth products.

[0126] During production, the rolled electronic fiberglass cloth blank (material 40) is smoothly sent out by the unwinder 31; the sent blank is sent into the impregnation device 11, and is folded back and forth in the impregnation tank containing coupling agent to ensure that the blank is completely impregnated by the coupling agent; the blank leaving the impregnation tank is squeezed by the squeeze roller 12 to remove excess coupling agent, so as to reduce the drying energy consumption of the drying box 13; the blank enters the drying box 13, and the remaining solvent on the blank is completely dried by hot air. As the fabric moves through the fiberglass cloth surface treatment unit 10, it may shift left or right relative to the centerline of the unit. During this process, the photoelectric sensor 211 of the photoelectric correction device 21 and the photoelectric sensor 211 located upstream of the upstream photoelectric correction device 21 detect the position of the fabric edge (the wide edge of the material 40) in real time. The correction actuator 212 drives the photoelectric sensor 211 and the material handling equipment to ensure that the positions of the coating wheel and the cutter relative to the fabric edge are approximately fixed. When the fabric moves to the coating wheel group, it is coated with adhesive. The rotating wheel applies a measured amount of adhesive to the edge of the fabric, creating a 10mm wide coating area. The pressing wheel rests against the coating wheel to ensure the adhesive penetrates the edge of the fabric. The fabric enters the infrared drying chamber 14, where far-infrared drying technology is used to cure the adhesive applied to the edge. The fabric then moves to the cutter, which cuts off 5mm from each of the coating areas 60 on both sides of the fiberglass fabric. This process removes the burrs from the electronic fiberglass fabric, while the adhesive remaining on the fabric acts as an edge sealer, preventing the warp yarns from falling off. The edge-sealed electronic fiberglass fabric is then rewound into a roll by the winding machine 32.

[0127] On the other hand, this application also provides a controller 22, which includes a processor and a memory communicatively connected to the processor. The memory stores instructions executable by the processor. When the instructions are executed by the processor, the controller 22 can control the correction actuator 212 in the photoelectric position detection and correction method for moving materials described in the above embodiments to perform correction actions.

[0128] On the other hand, this application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, can implement the photoelectric position detection and correction method for moving materials in the above embodiments.

[0129] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for photoelectric position detection and correction of moving materials, characterized in that: Applied to a production unit with a correction system (20), the correction system (20) includes multiple photoelectric sensors (211), multiple correction actuators (212), and multiple material handling devices arranged sequentially along the material conveying direction. The correction actuators (212) are associated with the photoelectric sensors (211) in a one-to-one correspondence to form a photoelectric correction device (21). The correction actuators (212) are connected to the associated photoelectric sensors (211) and several of the material handling devices. Includes the following steps: The position detection signal output by the photoelectric sensor (211) at the wide edge of the material (40) is obtained; The relative offset between the wide edge of the material (40) and the photoelectric sensor (211) is obtained based on the position detection signal and recorded; Based on the relative offset, the photoelectric sensor (211) is checked for failure in real time during the correction process. If so, the adjacent photoelectric sensor (211) that is not failed and located upstream of the failed photoelectric sensor (211) is used as a reference object, and the correction actuator (212) associated with the failed photoelectric sensor (211) performs the correction action according to the relative offset corresponding to the reference object. The correction actuator (212) performs the correction action by driving the photoelectric sensor (211) connected to it and the material handling equipment to move synchronously relative to the wide edge of the material (40); The correction action performed by the correction actuator (212) associated with the failed photoelectric sensor (211) based on the relative offset corresponding to the reference object includes: Based on the k consecutive relative offsets obtained from the k position detection signals continuously output by the reference object from the time of failure, the correction actuator (212) associated with the failed photoelectric sensor (211) is controlled to perform correction actions sequentially after a delay of Δt. Where Δt = ΔL / v, ΔL is the material transport distance between the failed photoelectric sensor and the reference object, and v is the material transport speed from the moment of failure.

2. The photoelectric position detection and correction method for moving materials according to claim 1, characterized in that: A photoelectric sensor (211) is provided on the upstream side of the photoelectric correction device (21) located at the upstreammost position.

3. The photoelectric position detection and correction method for moving materials according to claim 1, characterized in that: The correction action performed by the correction actuator (212) associated with the failed photoelectric sensor (211) based on the relative offset corresponding to the reference object includes: Based on the k consecutive relative offsets obtained from the k position detection signals continuously output by the reference object within Δt before the failure time, the correction actuator (212) associated with the failed photoelectric sensor (211) is controlled to perform correction actions sequentially from the failure time. Where Δt = ΔL / v, ΔL is the material transport distance between the failed photoelectric sensor and the reference object, and v is the material transport speed from the moment of failure.

4. The photoelectric position detection and correction method for moving materials according to claim 3, characterized in that: From the moment of failure, the correction stroke performed by the correction actuator (212) associated with the failed photoelectric sensor (211) is obtained by the following formula: A i =α i +W; wherein α i is the relative offset obtained from the i-th position detection signal outputted by the reference object in the time interval Δt preceding the failure time, and W is a correction stroke compensation value obtained from the following equation: ； Where, β i The relative offset γ is obtained based on the i-th position detection signal output by the failed photoelectric sensor within Δt before the failure time. i It corresponds to β i The weight, γ i+1 >γ i .

5. The photoelectric position detection and correction method for moving materials according to claim 1, characterized in that: The production unit triggers an alarm when the photoelectric sensor (211) fails and stops after a delay T, wherein T is greater than the duration for the correction actuator (212) associated with the failed photoelectric sensor (211) to complete at least one correction action.

6. A fiberglass cloth surface treatment unit, characterized in that: Used to implement the photoelectric position detection and correction method for moving material as described in any one of claims 1-5; The fiberglass cloth surface treatment unit (10) includes a conveyor line and a correction system (20). The conveyor line is used to transport materials (40); The correction system (20) includes a controller (22), a frame (23), multiple photoelectric sensors (211), and multiple correction actuators (212). The correction actuators (212) and the photoelectric sensors (211) are associated one-to-one to form a photoelectric correction device (21). All the photoelectric correction devices (21) are arranged sequentially along the conveyor line. The fixed end of the correction actuator (212) is connected to the frame (23), and the correction actuator (212) and the photoelectric sensor (211) are electrically connected to the controller (22). The controller (22) is used to acquire the position detection signal output by the photoelectric sensor (211) detecting the position of the wide edge of the material (40), and to obtain the relative offset between the wide edge of the material (40) and the photoelectric sensor (211) based on the position detection signal. The controller (22) can determine in real time whether the photoelectric sensor (211) is malfunctioning based on whether the position detection signal can be acquired, and then control the corresponding correction actuator (212) to perform correction action based on the relative offset. If so, the controller (22) takes the adjacent photoelectric sensor (211) that is not failed and is located upstream of the failed photoelectric sensor (211) as a reference object, retrieves the relative offset corresponding to the reference object, and controls the correction actuator (212) associated with the failed photoelectric sensor (211) to perform the correction action accordingly.

7. The fiberglass cloth surface treatment unit according to claim 6, characterized in that: It also includes a plurality of material handling devices for processing the wide edge of the material (40), the material handling devices including a first material handling device (51) and a second material handling device (52). The actuator (212) is connected to the associated photoelectric sensor (211). The first material handling device (51) and the second material handling device (52) are respectively connected to the execution end of a different one of the correction actuators (212).

8. The fiberglass cloth surface treatment unit according to claim 7, characterized in that: The first material handling device (51) is configured to apply adhesive to the wide edge of the material to form an adhesive area (60), and the second material handling device (52) is configured to cut off the outer area (61) of the adhesive area (60).

9. A fiberglass cloth surface treatment unit according to claim 7, characterized in that: The correction actuator (212) is configured as an electric push rod.

10. A fiberglass cloth surface treatment unit according to claim 7, 8, or 9, characterized in that: The fiberglass cloth surface treatment unit (10) also includes an impregnation device (11), a squeezing roller (12), a drying box (13) and an infrared drying box (14) arranged sequentially along the conveyor line. The infrared drying box (14) is located between the first material processing equipment (51) and the second material processing equipment (52).

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