A kind of online measuring device and control method of roll width based on optical measurement method

Abstract

This invention relates to the field of optical measurement technology, and in particular to an online measurement device and control method for roll width based on optical measurement methods. It includes a main ESCF coordinate positioning light curtain and an auxiliary ESCF coordinate positioning light curtain. The main ESCF coordinate positioning light curtain has a cover installed at both its upper and lower ends. Each cover has fixing screws at its four corners connected to the main ESCF coordinate positioning light curtain. A protective cover is fixedly installed at the upper end of the cover located above the main ESCF coordinate positioning light curtain. This invention, by changing the inaccurate measurement frequency of once every ten minutes or one hour, can intuitively display the width of the corresponding meter length. Color differentiation allows for quick identification of areas that are too wide or too narrow, enabling fine-tuning of the width control, saving raw materials, increasing yield, and improving product profitability. Combined with a weighing sensor, it automatically calculates the weight of the master roll, eliminating the need for manual meter readings. It is simple to install and operate, saving labor and costs.

Description

Technical Field

[0001] This invention relates to the field of optical measurement technology, and in particular to an online measurement device and control method for roll width based on optical measurement methods. Background Technology

[0002] For ease of transportation and storage, production lines for rolled materials use winding machines to wind products into a certain diameter. During the winding process, the width of the rolled material often fluctuates due to the equipment itself or the production process. In order to improve the efficiency of downstream slitting and cutting and reduce waste, it is necessary to strictly control the effective width of the rolled material.

[0003] Currently, the industry has dedicated personnel who regularly use measuring tapes or lasers to measure the boundaries of roll materials. However, this method has a large margin of error. In the process of cutting roll materials from a master roll into sub-rolls, if the width of the master roll is too large, the yield of the finished product will be low. If the width of the master roll is too small, the product will not be cut enough, resulting in greater waste. During the production process, the master roll may also swing left and right during winding, causing uneven edges. It is also difficult to directly measure the width of the inner core, which is also an industry problem. Moreover, only experienced operators can estimate the value for cutting the master roll, and there are also cases of failures where the estimation is wrong, resulting in a higher scrap rate. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides an online measurement device and control method for roll width based on optical measurement methods.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an online measurement device for roll material width based on an optical measurement method, comprising a main ESCF coordinate positioning light curtain and an auxiliary ESCF coordinate positioning light curtain. The main ESCF coordinate positioning light curtain has a top cover installed at both its upper and lower ends. Each top cover has a fixing screw installed between its four corners and the main ESCF coordinate positioning light curtain. A protective cover is fixedly installed at the upper end of the top cover located above the main ESCF coordinate positioning light curtain. An aviation connector is fixedly installed inside the protective cover. A grating protective cover is fixedly installed at the side end of the main ESCF coordinate positioning light curtain. At least two light emitters are fixedly installed between the grating protective cover and the main ESCF coordinate positioning light curtain.

[0006] As a preferred technical solution of the present invention, the main ESCF coordinate positioning light curtain and the auxiliary ESCF coordinate positioning light curtain have the same structure except for the light emitter and the light receiver, and the side ends of the main ESCF coordinate positioning light curtain and the auxiliary ESCF coordinate positioning light curtain are provided with mounting grooves.

[0007] An online measurement and control method for roll material width based on optical measurement methods, comprising the following steps:

[0008] S1: In the touch screen control software, set the target width W0 and its upper and lower thresholds W1 and W2, start the width measurement, and obtain the real-time width data W00, the left and right offset indices M1 and M2, and the average width W10 per unit minute.

[0009] S2: Select to enable width correction, write the target width W0 and average width W10 into the PLC of the winding machine, and the PLC controls the winding tension to adjust the width of the production material.

[0010] S3: Based on the width of the whole roll, the cutting width can be preset, and the blade holder position and theoretical yield can be automatically calculated;

[0011] S4: When the width fluctuates too much, the width correction function can be turned off. The width can be corrected by adjusting the process, such as modifying the position of the edge suction fan in the combing or the mesh laying spacing of the mesh laying machine. After correction, the width correction function can be turned on again.

[0012] Compared with the prior art, the beneficial effects that this invention can achieve are:

[0013] 1. This optical measuring device measures the width every 2 seconds, changing the inaccurate measurement that used to be done every ten minutes or an hour.

[0014] 2. It can intuitively display the width of the corresponding meter length, and distinguish them by color, so as to quickly understand the areas that are too wide or too narrow.

[0015] 3. Fine-tuning the control width saves raw materials, increases yield, and improves product profitability.

[0016] 4. When used with a weighing sensor, it automatically calculates the weight of the master roll, eliminating the need for manual meter reading and calculation.

[0017] 5. Simple installation and operation, saving labor and costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main ESCF coordinate positioning light curtain of the present invention;

[0019] Figure 2 This is a schematic diagram of the device layout structure of the present invention in a hydroentanglement production line;

[0020] Figure 3 This is a schematic diagram illustrating the width calculation of the present invention;

[0021] Figure 4 This is a schematic diagram illustrating the yield calculation of the present invention.

[0022] The components are: 1. Main ESCF coordinate positioning light curtain; 11. Grating protective cover; 12. Light emitter; 13. Top cover; 14. Fixing screw; 15. Protective cover; 16. Aviation plug; 17. Auxiliary ESCF coordinate positioning light curtain; 18. Mounting slot. Detailed Implementation

[0023] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0024] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an online roll width measurement device based on optical measurement methods includes a main ESCF coordinate positioning light curtain 1 and an auxiliary ESCF coordinate positioning light curtain 17. Both the upper and lower ends of the main ESCF coordinate positioning light curtain 1 are equipped with upper covers 13. Each upper cover 13 has four corners connected to the main ESCF coordinate positioning light curtain 1 with fixing screws 14. A protective cover 15 is fixedly installed on the upper end of the upper cover 13 located above the main ESCF coordinate positioning light curtain 1. An aviation connector 16 is fixedly installed inside the protective cover 15. A grating protective cover 11 is fixedly installed on the side end of the light curtain 1. At least two emitters 12 are fixedly installed between the grating protective cover 11 and the main ESCF coordinate positioning light curtain 1. At least two receivers are fixedly installed between the grating protective cover 11 and the auxiliary ESCF coordinate positioning light curtain 17. The structures of the main ESCF coordinate positioning light curtain 1 and the auxiliary ESCF coordinate positioning light curtain 17 are completely the same except for the emitters 12 and the receivers. The side ends of the main ESCF coordinate positioning light curtain 1 and the auxiliary ESCF coordinate positioning light curtain 17 are provided with mounting grooves 18.

[0025] Working principle:

[0026] Before winding, a system mounting bracket is installed, and a position adjustment module is installed on the bracket. This module allows for adjustment of the position of the optical measurement unit to meet different width requirements. A through-beam optical sensor is installed on the position adjustment module. Each optical sensor has 256 optical axis modules that emit beams sequentially. When material blocks the beam propagation, it indicates the material edge. The width of the material can be accurately calculated by using the relative positions of several units. This is the width measurement scheme. The control algorithm obtains the average width and target width over a fixed time period. When the average width of the material is lower than the lower limit of the target width, the control system notifies the PLC of the winding machine to control the winding tension to increase the product width, and vice versa.

[0027] 1. In the touchscreen control software, set the target width W0 and its upper and lower thresholds W1 and W2, enable width measurement, and obtain the real-time width data W00, left and right offset indices M1 and M2, and the average width W10 per minute. The actual width data W00 is obtained as follows: Figure 2 As shown;

[0028] 2. Select to enable width correction, write the target width W0 and average width W10 into the winding machine's PLC, and the PLC controls the winding tension to adjust the width of the production material;

[0029] 3. Based on the width of the whole roll, the cutting width can be preset, and the blade position and theoretical yield can be automatically calculated. The yield calculation is: L5 = L - L1 - L2 - L3 - L4.

[0030] When the width fluctuates too much, the width correction function can be turned off. The width can be corrected by adjusting the process, such as changing the position of the edge suction fan in the combing or changing the mesh spacing of the mesh laying machine. After correction, the width correction function can be turned on again.

[0031] This optical measuring device can measure the width every 2 seconds, changing the inaccurate measurement of once every ten minutes or once an hour. It can intuitively display the width of the corresponding meter length, distinguish it by color, quickly identify areas that are too wide or too narrow, fine-tune the width control, save raw materials, increase yield, and improve product profits. When used with a weighing sensor, it can automatically calculate the weight of the master roll, eliminating the need for manual meter reading and calculation. It is simple to install and operate, saving labor and costs.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A web width on-line measuring device based on optical measurement method, comprising a main ESCF coordinate positioning light curtain device (1) and an auxiliary ESCF coordinate positioning light curtain device (17), characterized in that, The upper and lower ends of the main ESCF coordinate positioning light curtain device (1) are provided with upper covers (13), and the four corners of each upper cover (13) and the main ESCF coordinate positioning light curtain device (1) are provided with fixing screws (14); the upper end of the upper cover (13) above the main ESCF coordinate positioning light curtain device (1) is fixedly provided with a protection cover (15), and the inside of the protection cover (15) is fixedly provided with an aviation plug (16); the side end of the main ESCF coordinate positioning light curtain device (1) is fixedly provided with a grating protection cover (11), and the grating protection cover (11) and the main ESCF coordinate positioning light curtain device (1) are fixedly provided with at least two light emitters (12).

2. The web width on-line measuring device based on optical measurement method according to claim 1, characterized in that, The main ESCF coordinate positioning light curtain device (1) and the auxiliary ESCF coordinate positioning light curtain device (17) are completely same in structure except the light emitters (12) and light receivers.

3. The web width on-line measuring device based on optical measurement method according to claim 1, characterized in that, The side end of the main ESCF coordinate positioning light curtain device (1) and the auxiliary ESCF coordinate positioning light curtain device (17) are provided with mounting grooves (18).

4. A web width on-line measurement control method based on an optical measurement method, characterized by, The method is used for the web width online measurement device as claimed in claim 1, and comprises the following steps: S1: setting a target width W0 and its upper and lower thresholds W1 and W2 in the touch screen control software, starting the width measurement, obtaining real-time width data W00, left and right offset indicators M1 and M2, and average width W10 per unit of time in minutes; S2: selecting to start the width correction, writing the target width W0 and the average width W10 into the PLC of the winding machine, and controlling the winding tension to adjust the width of the material; S3: according to the width of the whole roll, the cutting width can be pre-set, the knife holder position and the theoretical product yield can be automatically calculated; S4: when the width fluctuation is too large, the width correction can be closed, the width can be corrected in a large range by adjusting the process, modifying the suction air blower position of the carding or modifying the laying spacing parameters of the laying machine, and then the width correction function is started again.

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