Glass sheet production method and system

Abstract

Disclosed in the present invention are a glass sheet production method and system. The method comprises: first performing defect detection on a glass ribbon to obtain position information of each defect; then scribing a cutting contour on the glass ribbon to obtain a preliminarily cut glass sheet to be separated; further performing simulated layout on the preliminarily cut glass sheet to be separated, so as to obtain a virtual frame corresponding to a deeply cut glass sheet; once the preliminarily cut glass sheet has been separated, marking a corresponding position in a defective virtual frame on the basis of the position information of the defect; and finally cutting the separated preliminarily cut glass sheet to obtain the deeply cut glass sheet and scrapping the marked deeply cut glass sheet. During subsequent deep processing, the preliminarily cut glass sheet is cut to obtain the deeply cut glass sheet. It is only necessary to scrap a defective deeply cut glass sheet having a laser-engraved mark, rather than scrapping the entire preliminarily cut glass sheet. Therefore, the present production method can reduce the loss rate caused by glass defects and improve glass utilization rate and final production yield pass rate.

Description

A method and system for producing glass sheets

[0001] This application claims priority to Chinese Patent Application No. 202411501908.0, filed on October 25, 2024, entitled "A Method and System for Producing Glass Sheets", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention belongs to the technical field of glass processing, and specifically relates to a method and system for producing glass sheets. Background Technology

[0003] Glass sheet production mainly includes three steps: first, glass manufacturing, where raw materials are melted at high temperatures, shaped, annealed and cooled, and then formed into a continuous glass belt in the cold end section; second, processing into sheets, where the glass belt is conveyed and broken and cut online to obtain glass sheets; and third, factory inspection, because defects such as bubbles, stones and cracks that affect glass quality are inevitably generated during the manufacturing process. Therefore, in order to prevent poor-quality glass sheets from reaching the customer, defect inspection of the glass sheets is required before leaving the factory to remove poor-quality glass sheets.

[0004] Currently, there are generally two methods for defect detection of glass sheets before shipment. One is to directly detect defects in the larger preliminary cut glass sheets obtained by breaking them off, and scrap the defective preliminary cut glass sheets. Although the detection speed is faster, it is a serious waste of resources and will affect the pass rate. The other is to further cut the preliminary cut glass sheets into smaller deep cut glass sheets, and then detect defects in the deep cut glass sheets, scrapping the defective deep cut glass sheets. Although this can reduce resource waste and improve the pass rate, the number of deep cut glass sheets increases after the preliminary cut glass sheets are cut, and it is time-consuming and labor-intensive to detect them one by one, which will affect the delivery speed.

[0005] Therefore, it is necessary to design a glass sheet production method and system that can reduce resource waste and ensure delivery speed for the production processes of breaking, cutting and inspection, thereby improving the production efficiency and pass rate of glass sheets. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of this invention is to provide a glass sheet production method and system, which solves the technical problems of serious resource waste or slow delivery in the current glass sheet production methods, and achieves the effect of improving the production efficiency and qualification rate of glass sheets.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A method for producing glass sheets, comprising the following steps performed sequentially during the conveying process of glass strips;

[0009] 1) Defect information is obtained by performing defect detection on the glass strip, including location information;

[0010] 2) Draw a tangent frame on the glass strip with dimensions corresponding to the initial cut glass sheet;

[0011] 3) Simulate the layout of the area within the tangent frame to obtain multiple virtual frames corresponding to the size and depth of the cut glass sheets;

[0012] 4) Mark the defective virtual frame according to the location information;

[0013] 5) Separate the glass strip along the tangent frame to obtain a preliminary cut glass sheet;

[0014] 6) Cut the initially cut glass sheet into deep-cut glass sheets according to the simulated layout, and discard the marked deep-cut glass sheets.

[0015] Furthermore, step 5) also includes the following operations: classifying the pre-cut glass sheets according to the number of marked virtual frames on the pre-cut glass sheets; defining pre-cut glass sheets with all virtual frames marked as defective products, defining pre-cut glass sheets with some virtual frames marked as good products, and defining unmarked pre-cut glass sheets as superior products.

[0016] Further, in step 6), the initially cut glass sheets defined as good and excellent products are cut into deep-cut glass sheets according to the simulated layout, and the marked deep-cut glass sheets are scrapped.

[0017] Further, in step 2), tangent frames are first etched on the glass strip along the length and width directions.

[0018] Further, in step 1), the location information is the basic coordinates of the defect, and the origin of the basic coordinates is the physical base point of the equipment used for defect detection.

[0019] Further, in step 4), the displacement required for each tangent frame before marking is calculated based on the initial size of the cut glass sheet and the spacing between adjacent tangent frames. Then, based on the distance between the physical base point of the device used to mark the tangent frame and the longitudinal and transverse tangents, the relative position between the physical base point of the device used to mark the tangent frame and the physical base point of the device used for defect detection, and the displacement, the basic coordinates are converted into grasping coordinates with one corner of the tangent frame as the origin. The origin of the grasping coordinates is used as the origin of the marking action, and a mark is made in the virtual frame with defects based on the grasping coordinates.

[0020] The present invention also includes a glass sheet production system applied to the glass sheet production method described above. The production system includes a first roller conveyor and a control and processing device. The first roller conveyor is used to transport glass strips. Above the first roller conveyor, along the conveying direction, are arranged sequentially a defect detection device for detecting defects in the glass strip, a cutting device for scribing tangent frames, a marking device for performing marking actions, and a slitting device for separating the glass strip to obtain pre-cut glass sheets. The control and processing device is electrically connected to the first roller conveyor, the defect detection device, the cutting device, and the marking device.

[0021] Furthermore, the cutting equipment includes a longitudinal cutter for marking longitudinal tangents along the length of the glass strip and a transverse cutter for marking transverse tangents along the width of the glass strip.

[0022] Furthermore, the control processing equipment has preset layout information and relative position information of each device, and uses this information to control the movement of the cutting equipment and adjust the trajectory of the longitudinal and transverse tangent lines. Based on the movement of the cutting equipment, the control processing equipment controls the first roller conveyor to pause when the cutting equipment is drawing the tangent frame.

[0023] Furthermore, the marking device is a laser engraving machine, which obtains the gripping coordinates from the control processing equipment. The laser engraving machine uses visual positioning to grip the tangent frame and uses the origin of the gripping coordinates as the origin of the marking action. The laser engraving machine marks the defective virtual frame according to the gripping coordinates. The slitting equipment includes a transverse breaking roller and an edge removal device. The transverse breaking roller is used to break the glass strip along the transverse tangent, and the edge removal device is used to remove the material outside the tangent frame along the longitudinal tangent.

[0024] Furthermore, the first roller conveyor includes a first transmission section, a second transmission section, a third transmission section, and a fourth transmission section connected in sequence. The fourth transmission section is equipped with a stacking device. In the transmission direction of the first roller conveyor, the second transmission section is located behind the transverse breaking roller, and the third transmission section is located behind the edge removal device. The second roller conveyor is located below the third transmission section. When waste products are conveyed to the third transmission section, the third transmission section descends to connect with the second roller conveyor, and the waste products are conveyed to the area where scrapping is performed via the second roller conveyor. When superior and good products are conveyed to the third transmission section, the third transmission section remains connected with the fourth transmission section, and the superior and good products are conveyed to the stacking device via the fourth transmission section. The stacking device stacks the superior and good products separately.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The glass sheet production method of the present invention directly detects defects in the glass strip, which is more efficient than the current method of detecting both pre-cut and deep-cut glass sheets. After detection, the defect is marked near the defect based on its location information. After the pre-cut glass sheet is cut into deep-cut glass sheets, only the marked deep-cut glass sheets need to be scrapped, instead of scrapping the entire pre-cut glass sheet. This invention improves production efficiency while reducing losses caused by defects, which is conducive to improving resource utilization and the pass rate of glass sheet production.

[0027] 2. The glass sheet production method of the present invention classifies the preliminary cut glass sheets before cutting them into deep-cut glass sheets. The preliminary cut glass sheets that cannot be cut into qualified deep-cut glass sheets are scrapped, saving useless cutting work. Then, the remaining preliminary cut glass sheets are classified. The unmarked preliminary cut glass sheets are defined as superior products, and the remaining preliminary cut glass sheets are defined as good products. The deep-cut glass sheets obtained from the superior products do not need to be checked for markings. This helps to reduce the workload of cutting and inspecting the deep-cut glass sheets and improve the production efficiency of glass sheets.

[0028] 3. The glass sheet production method of the present invention is carried out using the production system described above. The glass belt is conveyed by the first roller conveyor and passes through the defect detection equipment, cutting equipment, marking equipment and slitting equipment in sequence. Under the control of the control and processing equipment, they work together to make each step of the production method complete automatically in sequence. This helps to reduce the intensity of manual labor and improve the production quality and automation level. Attached Figure Description

[0029] Figure 1 is a flowchart of the production method described in the embodiment;

[0030] Figure 2 is a schematic diagram of the production system described in the embodiment;

[0031] Figure 3 is a schematic diagram of the preliminary cut glass sheet with all virtual frames marked as described in the embodiment;

[0032] Figure 4 is a schematic diagram of a partially marked, preliminarily cut glass sheet as described in the embodiment;

[0033] Figure 5 is a schematic diagram of the unmarked preliminary cut glass sheet described in the embodiment;

[0034] Figure 6 is a schematic diagram of the glass sheet obtained by the preliminary cutting of the glass sheet described in the embodiment;

[0035] The components include: a first roller conveyor 1, a third transmission section 11, a defect detection device 2, a longitudinal cutter 31, an edge removal device 311, a transverse cutter 32, a transverse breaking roller 321, a marking device 4, a stacking device 5, a first container 51, a second container 52, a glass belt 6, a first edge 61, a second edge 62, a third edge 63, a fourth edge 64, a first side waste area 65, a second side waste area 66, a preliminary cut glass sheet 7, a deep cut glass sheet 71, a defect 8, a mark 81, a longitudinal cut line 91, a transverse cut line 92, and a virtual cut line 93. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0037] Example:

[0038] Please refer to Figure 1. A method for producing glass sheets involves the following steps performed sequentially during the conveying of the glass belt.

[0039] 1) Defect information is obtained by performing defect detection on the glass strip, including location information;

[0040] 2) Draw a tangent frame on the glass strip with dimensions corresponding to the initial cut glass sheet;

[0041] 3) Simulate the layout of the area within the tangent frame to obtain multiple virtual frames corresponding to the size and depth of the glass slices;

[0042] 4) Mark the defective virtual frame according to the location information;

[0043] 5) Separate the glass strip along the tangent frame to obtain a preliminary cut glass sheet;

[0044] 6) Cut the initially cut glass sheet into deep-cut glass sheets according to the simulated layout, and discard the marked deep-cut glass sheets.

[0045] The glass sheet production method of this invention first performs defect detection on the glass strip to obtain the location information of each defect. Then, tangent frames are engraved on the glass strip to obtain preliminary cut glass sheets to be separated. Further, the preliminary cut glass sheets to be separated are simulated and arranged to obtain virtual frames corresponding to the deep-cut glass sheets. After separating the preliminary cut glass sheets, the defective virtual frames are marked according to the defect location information. Finally, the deep-cut glass sheets are cut, and the marked deep-cut glass sheets are discarded. This invention directly performs defect detection on the glass strip, which is more efficient than the current method of detecting both preliminary and deep-cut glass sheets. After detection, the defect is marked near the defect based on its location information. After cutting the preliminary cut glass sheets into deep-cut glass sheets, only the marked deep-cut glass sheets need to be discarded, instead of discarding the entire preliminary cut glass sheet. Therefore, this invention can improve production efficiency while reducing losses caused by defects, thereby improving resource utilization and the pass rate of glass sheet production.

[0046] Specifically, in step 1), the location information is the basic coordinates of the defect, and the origin of the basic coordinates is the physical base point of the equipment used for defect detection. The physical base point of the equipment is the starting point used to establish a reference coordinate system during the equipment control process. For the equipment used for defect detection, in practice, the end center that realizes defect detection can be defined as its physical base point. The defect information also includes defect type information and size information.

[0047] Specifically, in step 2), as shown in Figures 2 and 3, two longitudinal tangent lines 91 are first engraved on the glass strip 6 along the length direction, and then two transverse tangent lines 92 are engraved on the glass strip 6 along the width direction. The longitudinal tangent lines 91 and the transverse tangent lines 92 intersect perpendicularly and form a tangent frame.

[0048] Specifically, in step 3), as shown in Figure 6, the simulated layout is formed by multiple virtual frames corresponding to the size and depth of the glass pieces 71 cut by multiple vertically intersecting virtual cutting lines 93.

[0049] Specifically, in step 4), the displacement required for each tangent frame is calculated based on the initial size of the cut glass sheet and the spacing between adjacent tangent frames. Then, based on the distances between the physical base point of the tangent frame marking device and the longitudinal and transverse tangents, the relative positions of the physical base point of the tangent frame marking device and the physical base point of the defect detection device, and the displacement, the basic coordinates are converted into grasping coordinates with one corner of the tangent frame as the origin. The origin of the grasping coordinates is used as the origin of the marking action, and a mark is made in the virtual frame with defects based on the grasping coordinates.

[0050] Specifically, step 5) also includes the following operations: classifying the pre-cut glass sheets according to the number of marked virtual frames on the pre-cut glass sheets; defining the pre-cut glass sheets 7 with all virtual frames marked as shown in Figure 3 as defective products, defining the pre-cut glass sheets 7 with some virtual frames marked as good products as shown in Figure 4, and defining the pre-cut glass sheets 7 without markings as superior products as shown in Figure 5.

[0051] Specifically, in step 6), the initially cut glass sheets, defined as good and excellent products, are cut into deep-cut glass sheets according to the simulated layout, and the marked deep-cut glass sheets are scrapped.

[0052] Before cutting the preliminary cut glass sheets into depth-cut glass sheets according to the simulated layout, the preliminary cut glass sheets are first classified. Preliminary cut glass sheets 7, where all virtual frames are marked (as shown in Figure 3), are discarded; that is, preliminary cut glass sheets that cannot be cut into qualified depth-cut glass sheets are discarded, thus saving useless cutting work. The remaining preliminary cut glass sheets are classified, and those preliminary cut glass sheets 7, where some virtual frames are marked (as shown in Figure 4), are defined as good products. As shown in Figure 6, the good products are further processed by cutting according to the virtual cutting lines 93 of the simulated layout to obtain multiple depth-cut glass sheets. 71. Then, the defective deep-cut glass sheets 71 with defects 8 are screened out and scrapped by marking 81, and the defect-free deep-cut glass sheets 71 are packaged and shipped out. As shown in Figure 5, the unmarked preliminary cut glass sheets 7 are defined as superior products. For superior products, deep-cut glass sheets 71 can be directly cut and packaged and shipped out, or directly packaged and shipped out for customers to cut and process as needed. The deep-cut glass sheets 71 obtained by cutting superior products do not need to be checked for markings again, which helps to reduce the workload of cutting deep-cut glass sheets 71 and checking deep-cut glass sheets 71, and improve the production efficiency of glass sheets.

[0053] Please refer to Figure 2. The glass sheet production method described uses a glass sheet production system, which includes a first roller conveyor 1 and a control and processing device. The first roller conveyor 1 is used to transport glass strips 6. Above the first roller conveyor 1, along the conveying direction, are sequentially arranged a defect detection device 2, a cutting device for engraving tangent frames, a marking device 4 for marking 81, and a slitting device for separating the glass strips 6 to obtain preliminarily cut glass sheets 7. The control and processing device is electrically connected to the first roller conveyor 1, the defect detection device 2, the cutting device, and the marking device 4, respectively. The control and processing device is used to control the operation of the first roller conveyor 1, the defect detection device 2, the cutting device, the marking device 4, and the slitting device; to simulate the layout of the area within the tangent frame; to determine the virtual frame with defects 8 based on the position information; and to calculate and convert the basic coordinates into gripping coordinates.

[0054] In this embodiment, the first roller conveyor 1 transports the glass strip 6 along its length direction, as shown in Figure 2. After being formed and cooled, the glass strip 6 is transported by the first roller conveyor 1 to the defect detection device 2. The glass strip 6 has a first edge 61 and a second edge 62 in its width direction, and the first edge 61 and the second edge 62 extend along its length direction (transmission direction). In this embodiment, the defect detection device 2 is an AOI defect detector. The defect detection device 2 performs defect detection on the glass strip 6 to obtain defect information and transmits the defect information to the control and processing device. Technicians can obtain the type and size information of the defects 8 on the glass strip 6 from the control and processing device so as to adjust the production process of the glass strip 6 as needed or perform other processing on the glass strip 6.

[0055] Correspondingly, the control and processing equipment has preset layout information, which includes the size of the initial cut glass sheet 7, the size of the deep cut glass sheet 71, and the spacing between adjacent tangent frames. The control and processing equipment calculates the amount of displacement required for the glass strip 6 before each tangent frame is drawn based on the size of the initial cut glass sheet 7 and the spacing between adjacent tangent frames, and controls the first roller conveyor 1 to intermittently convey the glass strip 6 based on the displacement amount.

[0056] The cutting equipment includes a longitudinal cutter 31 for marking longitudinal tangents 91 along the length of the glass strip 6 and a transverse cutter 32 for marking transverse tangents 92 along the width of the glass strip 6, as shown in Figure 2. The longitudinal cutter 31 and the transverse cutter 32 are arranged sequentially along the transmission direction. Figure 2 includes an enlarged schematic diagram A of the glass strip 6 after being processed by the cutting equipment to obtain a tangent frame. The cutting equipment first marks two longitudinal tangents 91 on the glass strip 6 using the longitudinal cutter 31, and then marks two transverse tangents 92 on the glass strip 6 using the transverse cutter 32. The longitudinal tangents 91 and the transverse tangents 92 intersect perpendicularly and form a tangent frame.

[0057] Correspondingly, the control processing equipment controls the operation of the cutting equipment according to the size of the initially cut glass sheet 7, and adjusts the distance between the drawn longitudinal tangent line 91 and transverse tangent line 92 and the physical base point of the cutting equipment, so that the tangent frame corresponds to the size of the initially cut glass sheet 7; the control processing equipment controls the first roller conveyor 1 to pause when the cutting equipment draws the tangent frame.

[0058] Among them, the marking device 4 is a laser engraving machine. The laser engraving machine is used to obtain the grasping coordinates from the control and processing equipment. The laser engraving machine grasps the tangent frame through visual positioning and uses the origin of the grasping coordinates as the origin of the coordinates for executing the marking action. The laser engraving machine marks the defective virtual frame according to the grasping coordinates.

[0059] Correspondingly, the control and processing equipment also has preset relative position information for each device. The relative position information for each device includes at least the relative position of the physical base point of the cutting device and the physical base point of the defect detection device 2. The relative position is the distance between the two devices in the transmission direction and the distance in the direction perpendicular to the transmission direction. The control and processing equipment converts the base coordinates into grab coordinates with one corner of the tangent frame as the origin, based on the distances between the longitudinal tangent line 91 and the transverse tangent line 92 and the physical base point of the cutting device, the relative position of the physical base point of the defect detection device 2 and the physical base point of the cutting device, and the displacement.

[0060] In this embodiment, a speed encoder (not shown in the figure) is electrically connected to the control processing device. The control processing device obtains the actual moving speed of the glass belt 6 through the speed encoder. The controller can determine the position of the glass belt 6 and the initially cut glass sheet 7 based on the actual moving speed of the glass belt 6 and the running time of the first roller conveyor 1, thereby controlling the actions of each device accordingly. In addition, the control processing device calculates the displacement required by the glass belt 6 before each tangent frame is drawn based on the size of the initially cut glass sheet 7 and the spacing between adjacent tangent frames. Then, it calculates the cycle of intermittently conveying the glass belt 6 based on the displacement and the actual moving speed, so that the cutting device can sequentially draw multiple tangent frames along the length direction of the glass belt 6. When the glass belt 6 first arrives at the defect detection device 2, it can be manually operated to enter the cycle, or a sensor electrically connected to the control processing device can be set up to detect whether the glass belt 6 has been conveyed to the correct position. During the transmission, the control processing device automatically controls the first roller conveyor 1 to convey the glass belt 6 according to the cycle.

[0061] The slitting equipment includes a transverse breaking roller 321 and an edge removal device 311. The transverse breaking roller 321 first breaks the glass strip 6 along the transverse tangent 92, and then the edge removal device 311 removes the material outside the tangent frame along the longitudinal tangent 91 to obtain a pre-cut glass sheet 7. Specifically, after the glass strip 6 is broken by the transverse breaking roller 321, a glass sheet with a first side waste area 65 and a second side waste area 66 in the width direction is obtained. Figure 2 shows an enlarged schematic diagram B of the glass strip 6 after being processed by the transverse breaking roller 321. Then, the edge removal device 311 removes the first side waste area 65 and the second side waste area 66. Afterwards, a preliminary cut glass sheet 7 is obtained. The preliminary cut glass sheet 7 has a third edge 63 in the width direction of the glass strip 6 and a fourth edge 64 in the length direction. Figure 2 shows an enlarged schematic diagram C of the glass sheet after being processed by the edge removal device 311. As shown in Figure 4, in this embodiment, the upper left corner of the tangent frame is taken as the origin O of the grasping coordinate. The distance between the defect 8 and the third edge 63 is L1, which is the vertical coordinate of the grasping coordinate. The distance between the defect 8 and the fourth edge 64 is L2, which is the horizontal coordinate of the grasping coordinate. The grasping coordinate is the coordinate information of the defect obtained by the laser engraving machine to perform the marking action.

[0062] Please refer to Figure 2. In this embodiment, the first roller conveyor 1 includes a first transmission section, a second transmission section, a third transmission section 11, and a fourth transmission section connected in sequence. The fourth transmission section is equipped with a stacking device 5. In the transmission direction of the first roller conveyor 1, the second transmission section is located behind the transverse breaking roller 321, and the third transmission section 11 is located behind the edge removal device 311. The second roller conveyor is located below the third transmission section 11. When waste is conveyed to the third transmission section 11, the third transmission section 11 descends to meet the second roller conveyor. The machine is connected, and the waste is transported to the area for scrapping through the second roller conveyor. When the superior and good products are transported to the third transmission section 11, the third transmission section 11 remains connected to the fourth transmission section. The superior and good products are transported to the stacking equipment 5 through the fourth transmission section. The stacking equipment 5 stacks the superior and good products separately. In this embodiment, the stacking equipment 5 is provided with a first container 51 and a second container 52 on one side. The first container 51 and the second container 52 are used to hold the superior and good products respectively, so as to facilitate the separate processing of superior and good products.

[0063] The glass sheet production method of this invention involves a control and processing device that coordinates the operation of a first roller conveyor, defect detection equipment, cutting equipment, marking equipment, slitting equipment, and stacking equipment. First, defect detection is performed on the glass strip to obtain the location information of each defect. Then, tangent frames are engraved on the glass strip to obtain preliminary cut glass sheets to be separated. Further, the preliminary cut glass sheets are simulated and arranged to obtain virtual frames corresponding to deep-cut glass sheets. After separating the preliminary cut glass sheets, marks are made within the defective virtual frames according to the defect location information. Finally, deep-cut glass sheets are obtained, and the marked deep-cut glass sheets are discarded. In subsequent deep processing, the preliminary cut glass sheets are cut into deep-cut glass sheets. Only the defective deep-cut glass sheets with laser markings need to be discarded, instead of discarding the entire preliminary cut glass sheet. Therefore, this production method can reduce the loss rate caused by glass defects and improve glass utilization and final production pass rate.

[0064] Furthermore, in the production system of the glass sheet production method described in this invention, the control processing equipment can record the number of marks on each pre-cut glass sheet and output the marking information to the stacking equipment. The stacking equipment can stack and package the marked and unmarked pre-cut glass sheets separately. During deep processing, the unmarked pre-cut glass sheets are cut into deep-cut glass sheets. If no other quality defects are found in the deep processing area, they can all be packaged as good glass sheets. The marked pre-cut glass sheets are cut separately for deep processing. The marked deep-cut glass sheets are scrapped, and the unmarked deep-cut glass sheets can be packaged. In actual production, the number of marked glass sheets is usually relatively small. If the stacking equipment does not distinguish and mix them, a large amount of equipment or manpower is required to inspect and reject the pre-cut glass sheets during deep processing. Therefore, the production method described above can improve the production efficiency of pre-cut glass sheets during deep processing and reduce the intensity of manual labor.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of the present invention without departing from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A method for producing glass sheets, characterized in that: The following steps are performed sequentially during the glass ribbon conveying process; 1) Defect information is obtained by performing defect detection on the glass strip, including location information; 2) Draw a tangent frame on the glass strip with dimensions corresponding to the initial cut glass sheet; 3) Simulate the layout of the area within the tangent frame to obtain multiple virtual frames corresponding to the size and depth of the cut glass sheets; 4) Mark the defective virtual frame according to the location information; 5) Separate the glass strip along the tangent frame to obtain a preliminary cut glass sheet; 6) Cut the initially cut glass sheet into deep-cut glass sheets according to the simulated layout, and discard the marked deep-cut glass sheets.

2. The method for producing glass sheets according to claim 1, characterized in that: Step 5) also includes the following operations: classifying the preliminary cut glass sheets according to the number of marked virtual frames on the preliminary cut glass sheets; defining the preliminary cut glass sheets with all virtual frames marked as waste products, defining the preliminary cut glass sheets with some virtual frames marked as good products, and defining the preliminary cut glass sheets without markings as superior products.

3. The method for producing glass sheets according to claim 2, characterized in that: In step 6), the initially cut glass sheets, defined as good and excellent, are cut into deep-cut glass sheets according to the simulated layout. The marked deep-cut glass sheets are then discarded.

4. The method for producing glass sheets according to claim 1, characterized in that: In step 2), first scribing out the tangent frame along the length and width directions on the glass strip.

5. The method for producing glass sheets according to claim 4, characterized in that: In step 1), the location information is the basic coordinates of the defect, and the origin of the basic coordinates is the physical base point of the equipment used for defect detection.

6. The method for producing glass sheets according to claim 5, characterized in that: In step 4), the displacement required for each tangent frame is calculated based on the initial size of the cut glass sheet and the spacing between adjacent tangent frames. Then, based on the distances between the physical base point of the tangent frame marking device and the longitudinal and transverse tangents, the relative positions of the physical base point of the tangent frame marking device and the physical base point of the defect detection device, and the displacement, the basic coordinates are converted into grasping coordinates with one corner of the tangent frame as the origin. The origin of the grasping coordinates is used as the origin of the marking action, and a mark is made in the virtual frame with defects based on the grasping coordinates.

7. A glass sheet production system applied to the glass sheet production method of claim 6, characterized in that: The production system includes a first roller conveyor and a control and processing device. The first roller conveyor is used to transport glass strips. Above the first roller conveyor, along the conveying direction, there are sequentially arranged a defect detection device for detecting defects in the glass strip, a cutting device for scribing tangent frames, a marking device for performing marking actions, and a slitting device for separating the glass strip to obtain pre-cut glass sheets. The control and processing device is electrically connected to the first roller conveyor, the defect detection device, the cutting device, and the marking device.

8. The glass sheet production system according to claim 7, characterized in that: The cutting equipment includes a longitudinal cutter for marking longitudinal tangents along the length of the glass strip and a transverse cutter for marking transverse tangents along the width of the glass strip.

9. The glass sheet production system according to claim 8, characterized in that: The control and processing equipment has preset layout information and relative position information of each device, and uses this information to control the movement of the cutting equipment and adjust the trajectory of the longitudinal and transverse tangent lines. Based on the movement of the cutting equipment, the control and processing equipment controls the first roller conveyor to pause when the cutting equipment is drawing the tangent frame.

10. The glass sheet production system according to claim 7, characterized in that: The marking equipment is a laser engraving machine, which obtains the gripping coordinates from the control processing equipment. The laser engraving machine uses visual positioning to grip the tangent frame and uses the origin of the gripping coordinates as the origin of the marking action. The laser engraving machine marks the defective virtual frame according to the gripping coordinates. The slitting equipment includes a transverse breaking roller and an edge removal device. The transverse breaking roller is used to break the glass strip along the transverse tangent, and the edge removal device is used to remove the material outside the tangent frame along the longitudinal tangent.

11. The glass sheet production system according to claim 10, characterized in that: The first roller conveyor includes a first transmission section, a second transmission section, a third transmission section, and a fourth transmission section connected in sequence. The fourth transmission section is equipped with a stacking device. In the transmission direction of the first roller conveyor, the second transmission section is located behind the transverse breaking roller, and the third transmission section is located behind the edge removal device. The second roller conveyor is located below the third transmission section. When waste products are conveyed to the third transmission section, the third transmission section descends to connect with the second roller conveyor, and the waste products are conveyed to the area for scrapping through the second roller conveyor. When superior and good products are conveyed to the third transmission section, the third transmission section remains connected with the fourth transmission section, and the superior and good products are conveyed to the stacking device through the fourth transmission section. The stacking device stacks the superior and good products separately.

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