Positioning and cutting method and positioning and cutting equipment for large-size light guide plate
By using detectors and image collectors to accurately locate the reserved size of the light guide plate during the manufacturing process of large-size light guide plates, the problem of improper reserved space during cutting is solved, and efficient and accurate light guide plate cutting is achieved.
Patent Information
- Application Number
- CN202411695313.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-02-18
AI Technical Summary
The existing large-size light guide plate manufacturing methods are difficult to accurately position when cutting, resulting in too large or too small reserved space, resulting in waste of materials and inefficient production efficiency.
The trigger detector, the first image collector and the second image collector are used to cooperate with the laser cutting machine to accurately locate the reserved size of the light guide plate through detection and image acquisition techniques to reduce the safe reserved space during cropping.
It realizes accurate cutting of light guide plates, reduces material waste and waste generation, and improves production efficiency and product quality.
Smart Images
Figure CN119457479A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of light guide plate production, and in particular to a positioning and cutting method and positioning and cutting equipment for a large-size light guide plate. Background Art
[0002] Light guide plate is a plate that can evenly distribute light source to the display area. It is widely used in liquid crystal displays and other backlight modules. Generally speaking, light guide plate is a precision optical structure designed to achieve the desired light output pattern through the refraction and reflection of light. Therefore, these structures must be precisely positioned at specific positions on the plate. With the advancement of display technology, especially the growth of liquid crystal display and backlight technology, the size of display devices is getting larger and larger, and the market demand for more efficient and uniform light source distribution is also increasing, which has led to the rise of large-size light guide plates.
[0003] In the prior art, large-sized light guide plates are usually manufactured through a roll-to-roll continuous production method, which uses a cutting tool to cut the entire roll of substrate, and performs fine processing on the edges and dimensions to form separate large-sized light guide plates. However, this manufacturing method has caused some problems. First, if too much safety space is reserved during cutting, although it can avoid damage to the dot design area during the cutting process, a large amount of redundant material will be planed off, which not only increases material waste, but also leads to the generation of a large amount of waste. If the reserved cutting safety space is too small, the originally reserved area of the light guide plate may be damaged during the cutting process, resulting in overall scrapping, reduced production efficiency and increased costs.
[0004] In view of this, the inventor has summarized his rich experience in related industries for many years, conceived and proposed a positioning and cutting method and positioning and cutting equipment for large-size light guide plates, so as to improve the many deficiencies and difficulties faced in the roll-to-roll continuous production of large-size light guide plates. Summary of the invention
[0005] One purpose of the present invention is to provide a positioning and cutting method and positioning and cutting equipment for a large-size light guide plate, which can accurately locate the reserved size of the light guide plate body, ensure the cutting accuracy, reduce the safety reserved space during cutting, reduce the waste dust and scraps generated during polishing and finishing, improve the production efficiency of the light guide plate and reduce the scrap rate, so as to achieve the goal of saving materials and reducing waste.
[0006] To achieve the above-mentioned purpose, the present invention discloses, in one embodiment, a positioning and cutting method for a large-size light guide plate, comprising the following steps: a trigger detector, a first image collector and a second image collector are arranged in sequence along the production line direction, so that the trigger detector is located on the rear side of the first image collector, and the first image collector is located on the rear side of the second image collector; a continuously produced light guide plate body is provided, and it is advanced in the direction of the production line, wherein the continuously produced light guide plate body is defined with a plurality of safety cutting areas and a plurality of grid design areas, the safety cutting area is arranged in front of the grid design area, the continuously produced light guide plate body has a plurality of trigger targets, a plurality of first positioning targets and a plurality of second positioning targets, the trigger targets are respectively located in each of the safety cutting areas, and the The first positioning targets are respectively located at the front edge of the dot design area, and the second positioning targets are respectively located at the rear edge of the dot design area; when the trigger detector detects any of the trigger targets, the trigger detector sends a signal to the first image collector and the second image collector to drive the first image collector and the second image collector to simultaneously perform image acquisition, thereby obtaining a first image including the first positioning target located at the front side of any of the dot design areas and a second image of the second positioning target at the rear side; the first image and the second image are analyzed and calculated to obtain the size and position of each of the dot design areas; and a laser cutting machine is driven to cut the continuously produced light guide plate body according to the size and position of each of the dot design areas. Based on this, the trigger targets, positioning targets, and matching detectors and image collectors that fall outside the dot design area are used to accurately locate the reserved size, so as to reduce the reserved space required for laser cutting, thereby reducing the waste of subsequent polishing and finishing, and at the same time, it can also avoid damaging the dot design area and greatly improve the production yield of the light guide plate.
[0007] Furthermore, in another embodiment, before the step of "providing a continuous production light guide plate body and advancing it in the direction of the production line", a lighting device is arranged in the direction of the production line to provide lighting light toward one of the trigger target, the first positioning target and the second positioning target or a combination thereof, thereby improving detection sensitivity and image acquisition quality.
[0008] In yet another embodiment, one side surface of the continuously produced light guide plate body further has a plurality of V-shaped grooves to produce a plate having optically related structural designs on both sides.
[0009] Based on the aforementioned continuous production light guide plate structure state, in another embodiment, the method also includes before the step of "providing a continuous production light guide plate and moving it in the direction of the production line", setting a lighting device in the direction of the production line, for providing lighting light toward one of the trigger target, the front positioning target and the rear positioning target or a combination thereof, wherein the illumination direction of the lighting device is parallel to the extension direction of the V-groove, so as to facilitate improving the detection and target position image acquisition accuracy.
[0010] Furthermore, in one embodiment, the lighting device is pivotally mounted on a gantry bracket and can rotate relative to the gantry bracket, thereby enabling the lighting device to have better adjustment flexibility.
[0011] Based on the same technical concept, the present invention also proposes a positioning and cutting device for a large-size light guide plate, comprising: a trigger detector; a first image collector, arranged on one side of the trigger detector and electrically connected to the trigger detector; a second image collector, arranged on one side of the first image collector and electrically connected to the trigger detector, wherein the trigger detector, the first image collector and the second image collector are arranged in sequence according to a production line direction, so that the trigger detector is located at the rear side of the first image collector, and the second image collector is located at the rear side of the first image collector; a carrying and moving device, arranged on one side of the trigger detector, the first image collector and the second image collector, for placing a continuously produced light guide plate body and moving it along the production line direction; wherein the continuously produced light guide plate body is defined with a plurality of safety cutting areas and a plurality of grid design areas, the safety cutting area is arranged in front of the grid design area, the continuously produced light guide plate body has a plurality of trigger targets, a plurality of first positioning targets and a plurality of second positioning targets, and the trigger targets are respectively located at each of the safety cutting area, the first positioning targets are respectively located at the front edge of the dot design area, and the second positioning targets are respectively located at the rear edge of the dot design area; wherein, when the continuous production type light guide plate body is driven by the carrying and moving device to move along the production line direction and the trigger detector detects any of the trigger targets, the trigger detector sends a signal to the first image collector and the second image collector to drive the first image collector and the second image collector to simultaneously perform image acquisition, thereby obtaining a first image including the first positioning target located at the front side of any of the dot design areas and a second image of the second positioning target at the rear side; a processor is electrically connected to the first image collector and the second image collector, used to receive the first image and the second image, and analyze and calculate the first image and the second image to obtain the size and position of each of the dot design areas; and a laser cutting machine is arranged on one side of the carrying and moving device and is electrically connected to the processor, so as to cut the continuous production type light guide plate body according to the size and position of each of the dot design areas. The equipment can effectively solve the problems of excessive redundant waste caused by excessive reserved space when cutting roll-to-roll substrates, and low product yield caused by damage to the reserved board area during cutting due to too small reserved space, so as to improve the production quality and efficiency of large-size light guide plates through precise positioning and cutting.
[0012] Based on the above method, in another embodiment, it also includes a lighting device, which is arranged on one side of the carrying mobile device, and is used to provide lighting light toward one of the trigger target, the first positioning target and the second positioning target or a combination thereof, so as to enhance the detection and image acquisition accuracy of the trigger detector and the first and second image collectors.
[0013] In addition, in another embodiment, a surface of one side of the continuously produced light guide plate body is also provided with a plurality of V-shaped grooves, and the V-shaped grooves are arranged in parallel and spaced apart to produce a large-sized light guide plate product having optical structures on both sides.
[0014] Based on the above embodiments, in one embodiment, it is further disclosed that the positioning and cutting equipment also includes a lighting device, which is arranged on one side of the carrying movable device, and is used to provide lighting light toward one or a combination of the trigger target, the front positioning target and the rear positioning target, wherein the illumination direction of the lighting device is parallel to the extension direction of the V-groove, so as to improve the accuracy of detection and image acquisition.
[0015] Based on the implementation with the lighting device, in yet another implementation, the lighting device is pivotally mounted on a gantry bracket and can rotate relative to the gantry bracket, so that the lighting device can be adjusted according to lighting needs.
[0016] To summarize the above, the positioning and cutting method and positioning and cutting equipment of the large-size light guide plate of the present invention can accurately locate the plate size of the finished light guide plate through the target set at a specific position and the matching detection and image acquisition device, and cut to form a corresponding large-size light guide plate product. This can not only reduce the space reserved for cutting to reduce the waste dust and scraps generated by polishing and finishing, but also ensure that the product range will not be damaged during cutting, thereby improving the quality yield of large-size light guide plate products. Furthermore, the present invention also proposes many additional technical features, the detailed features and corresponding functions are described in the above paragraphs. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 , is a flow chart of the steps of a positioning and cutting method according to one embodiment of the present invention.
[0018] Figure 2 , which is a schematic diagram of the structure and application status of the positioning and cutting equipment according to one embodiment of the present invention.
[0019] Figure 3 , which is a schematic diagram of the structure and application status of the positioning and cutting device from another perspective of an embodiment of the present invention.
[0020] Figure 4 , is a flowchart of the steps of a positioning and cutting method in another implementation state of one embodiment of the present invention.
[0021] Figure 5 , is a schematic diagram of a block module of a positioning and cutting device according to an embodiment of the present invention.
[0022] Figure 6 , which is a structural schematic diagram of a positioning and cutting device in another implementation state of one embodiment of the present invention.
[0023] Figure 7 , which is a schematic diagram of the application of a positioning and cutting device in another implementation state of one embodiment of the present invention. DETAILED DESCRIPTION
[0024] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings.
[0025] As mentioned above, during the roll-to-roll production of light guide plates, when cutting to form a single large-sized light guide plate product, there is a dilemma that a more precise cutting process cannot be used to reduce waste while avoiding damage to the originally reserved area of the light guide plate. In response to this, the present invention proposes a positioning and cutting method and positioning and cutting equipment for large-sized light guide plates, so as to effectively improve the positioning and cutting accuracy by utilizing the target position and detection matching design, thereby effectively solving the deficiencies of existing production lines. The following is an explanation of the technical features of the present invention through diagrams and detailed texts, wherein the structural rulers, proportions, sizes, shapes or application states shown in the figures are only for illustration purposes and are used to illustrate the technical features of the present invention. They do not represent the actual structural design, and this is hereby explained.
[0026] First, the positioning and cutting method of large-size light guide plates is explained. Figure 1 , which is a flow chart of the steps of a positioning and cutting method according to one embodiment of the present invention, and the positioning and cutting method includes the following steps.
[0027] A trigger detector 1, a first image collector 2 and a second image collector 3 are sequentially arranged along the production line direction A, so that the trigger detector 1 is located behind the first image collector 2, and the first image collector 2 is located behind the second image collector 3 (step S01). In order to illustrate the various components mentioned in step S01, it can be first referred to in conjunction with Figure 2 , which is a schematic diagram of the structure and application status of a positioning and cutting device according to an embodiment of the present invention, and illustrates the setting relationship between a trigger detector 1, a first image collector 2 and a second image collector 3.
[0028] Next, a continuously produced light guide plate body 9 is provided and advanced in the production line direction A, wherein the continuously produced light guide plate body 9 is defined with a plurality of safety cutting areas 90 and a plurality of dot design areas 91, and the safety cutting areas 90 are respectively arranged in front of the dot design areas 91; the continuously produced light guide plate body 9 has a plurality of trigger targets 92, a plurality of first positioning targets 93 and a plurality of second positioning targets 94, and the trigger targets 92 are respectively located in each safety cutting area 90, the first positioning targets 93 are respectively located in the front edge of the dot design area 91, and the second positioning targets 94 are respectively located in the rear edge of the dot design area 91 (step S02). The continuously produced light guide plate body 9 mentioned here refers to a long strip of substrate on which an optical dot structure has been formed by a roll-to-roll manufacturing method but has not yet been cut to form an independent plate body. Specifically, it is a plate structure after the rolled substrate is embossed by a roller to form optical dots on the surface of the substrate, and the optical dots will be located within the range framed by the dot design area 91, wherein in Figure 2 and subsequent Figure 3 The optical dots are omitted in the figure to clearly illustrate the features of the above-mentioned components.
[0029] During the continuous production of the light guide plate 9 moving forward in the production line direction A, when the trigger detector 1 detects any trigger target 92, the trigger detector 1 sends a signal to the first image collector 2 and the second image collector 3 to drive the first image collector 2 and the second image collector 3 to simultaneously collect images, thereby obtaining a first image including a first positioning target 93 located at the front side of any network dot design area 91 and a second image of a second positioning target 94 at the rear side (step S03). Figure 3 , which is a schematic diagram of the structure and application state of the positioning and cutting device from another perspective of an embodiment of the present invention, through Figure 3 The figure can better illustrate the content of step S03. When the light guide plate body 9 is continuously produced and moves along the production line direction A and the trigger detector 1 detects the trigger target 92, a signal will be sent to enable the first image collector 2 and the second image collector 3 to simultaneously perform image acquisition, so as to shoot the first positioning target 93 and the second positioning target 94 to obtain the first image and the second image. In specific implementation, the trigger detector 1 can be set to detect the contour of the trigger target 92, so that after detecting the target, it sends a signal to notify the first image collector 2 and the second image collector 3, and the first image collector 2 and the second image collector 3 simultaneously perform image acquisition after a trigger delay time, that is, an action time difference. In addition, the signal sent by the trigger detector 1 can be directly transmitted to the first image collector 2 and the second image collector 3, or it can be indirectly transmitted through other relay elements.
[0030] Then, the first image and the second image are analyzed and calculated to obtain the size and position of each dot design area 91 (step S04). Specifically, after obtaining the first image and the second image, image analysis processing is performed on the first image and the second image to confirm the position of the first positioning target 93 and the second positioning target 94 and align the two. Then, the distance between the first positioning target 93 and the second positioning target 94 is calculated and the actual length is obtained by pixel size conversion, so that the length and position of the dot design area 91 can be known. Finally, a laser cutting machine 4 is driven to cut the continuously produced light guide plate body 9 according to the size and position of each dot design area 91 (step S05) to obtain multiple independent large-size light guide plate products.
[0031] Through the above method steps, the continuously produced light guide plate body 9 can be accurately cut in the process of producing large-sized light guide plates, thereby solving the problem of not being able to reserve cutting space in the past. The positioning cutting method uses the matching design of target position, detection and image acquisition, and can accurately know the position and size of each predetermined large-sized light guide plate on the continuously produced light guide plate body 9 according to the automatic production line production method, and cut it through the laser cutter 4 accordingly, thereby obtaining an independent plate body that meets the product size.
[0032] Please continue reading Figure 2 and Figure 4 ,in Figure 4 This is a flowchart of the positioning and cutting method steps of another implementation state of one embodiment of the present invention. In this implementation state, it also includes setting a lighting device 5 in the production line direction A before the step of "providing a continuous production light guide plate body 9 and making it move in the production line direction A", which is used to provide lighting light toward one of the trigger target 92, the first positioning target 93 and the second positioning target 94 or a combination thereof (step S06). In order to enhance the detection accuracy and shooting clarity of the trigger target 92 and / or the first positioning target 93 and the second positioning target 94, it can be achieved by setting the lighting device 5 to illuminate one of the trigger target 92, the first positioning target 93 and the second positioning target 94, two of them or all three of them.
[0033] Please refer to Figure 2 From the perspective of hardware equipment, the lighting device 5 can be pivotally mounted on a gantry bracket 6 in an implementation state, and it can rotate relative to the gantry bracket 6 to facilitate adjustment of the lighting direction of the lighting device 5 and enhance adjustment flexibility.
[0034] In addition, the positioning cutting method is also applicable to workpieces with optical structures on both sides. More specifically, in addition to the dot structure, the continuously produced light guide plate body 9 can also have a plurality of V-shaped grooves 95 on one side of the continuously produced light guide plate body 9 in one implementation state. The V-shaped grooves 95 are arranged in parallel and spaced apart. Please refer to the following for further details. Figure 6 and Figure 7 , which is a schematic diagram of the structure of the positioning and cutting equipment and an application diagram of another implementation state of one embodiment of the present invention. The large-size light guide plate manufactured according to this has a structural feature of optical dots on one side and V-shaped grooves 95 on the other side to provide the required light output effect. Among them, one implementation state of the V-shaped grooves 95 is that all of them are located within the dot design area 91. And Figure 6 For illustration, only one V-shaped groove 95 is shown. In fact, the setting state of the V-shaped groove 95 is similar to Figure 7 As shown, in addition, Figure 2 and Figure 3 ,exist Figure 6 and Figure 7 The optical dots are also omitted in the figure to clearly illustrate the features of other components.
[0035] In the case where the light guide plate body 9 is continuously produced and has a V-shaped groove 95, a lighting device 5 can also be set in the production line direction A before step S02 to provide lighting light toward one of the trigger target 92, the first positioning target 93 and the second positioning target 94 or a combination thereof. However, when the light guide plate body 9 is continuously produced and has a V-shaped groove 95, the irradiation direction of the lighting device 5 is parallel to the extension direction of the V-shaped groove 95 to avoid the light being projected onto the V-shaped groove 95 and causing a change in the light conduction path, which in turn makes it impossible to reliably illuminate one of the trigger target 92, the first positioning target 93 and the second positioning target 94 or a combination thereof.
[0036] Similarly, in this implementation state, the lighting device 5 can also be pivoted on the gantry bracket 6 and can rotate relative to the gantry bracket 6 to facilitate adjusting the irradiation direction of the lighting device 5 at any time and making adjustments in time according to the production line structure.
[0037] Next, we will continue to explain a large-size light guide plate positioning and cutting device based on the same technical concept. Figure 2 , Figure 3 and Figure 5 As shown, Figure 5 This is a schematic diagram of a block module of a positioning and cutting device according to an embodiment of the present invention. Figure 2 and Figure 3 The positioning and cutting device includes a trigger detector 1 , a first image collector 2 , a second image collector 3 , a carrying and moving device 7 , a processor 8 and a laser cutting machine 4 .
[0038] The first image collector 2 is arranged on one side of the trigger detector 1, and the second image collector 3 is arranged on one side of the first image collector 2, wherein the trigger detector 1, the first image collector 2 and the second image collector 3 are arranged in sequence according to a production line direction A, so that the trigger detector 1 is located at the rear side of the first image collector 2, and the first image collector 2 is located at the rear side of the second image collector 3. The carrying and moving device 7 is arranged on one side of the trigger detector 1, the first image collector 2 and the second image collector 3, and is used to place a continuous production type light guide plate body 9 and move it along the production line direction A. The continuous production type light guide plate body 9 is defined with a plurality of safety cutting areas 90 and a plurality of dot design areas 91, and the safety cutting areas 90 are respectively located in front of the dot design areas 91. The continuous production light guide plate body 9 also has a plurality of trigger targets 92, a plurality of first positioning targets 93 and a plurality of second positioning targets 94. The trigger targets 92 are respectively located in each safety cutting area 90, the first positioning targets 93 are respectively located at the front edge of the dot design area 91, and the second positioning targets 92 are respectively located at the rear edge of the dot design area 91. When the continuous production light guide plate body 9 is driven by the carrying moving device 7 to move along the production line direction A and the trigger detector 1 detects any trigger target 92, the trigger detector 1 sends a signal to the first image collector 2 and the second image collector 3 to drive the first image collector 2 and the second image collector 3 to simultaneously perform image acquisition, thereby obtaining a first image including the first positioning target 93 located at the front side of any dot design area 91 and a second image of the second positioning target 94 at the rear side. Among them, the arrangement positions of the trigger target 92, the first positioning target 93 and the second positioning target 94 on the continuous production light guide plate body 9 are consistent with the production line direction A. Therefore, after the trigger detector 1 detects the trigger target 92 and sends a signal, the first image collector 2 and the second image collector 3 will simultaneously perform image acquisition after a trigger delay time, that is, the action time difference, to successfully obtain the first image and the second image. In an implementation state, the trigger detector 1 can be electrically connected to the first image detector 2 and the second image detector 3 respectively to directly transmit signals to the first image detector 2 and the second image detector 3, and of course, the signal can also be transmitted through other relay elements.
[0039] The processor 8 is electrically connected to the first image collector 2 and the second image collector 3, and is used to receive the first image and the second image, and analyze and calculate the first image and the second image to obtain the size and position of each dot design area 91. In practical applications, the processor 8 can analyze and process the first image and the second image to calculate the distance between the first positioning target 92 and the second positioning target 93, and obtain the actual length by pixel size conversion. The laser cutting machine 4 is set on one side of the carrying mobile device 7 and is electrically connected to the processor 8 to cut the continuous production type light guide plate body 9 according to the size and position of each dot design area 91.
[0040] By matching the trigger detector 1, the first image collector 2 and the second image collector 3 with the trigger target 92, the first positioning target 93 and the second positioning target 94, the cutting position can be confirmed, thereby eliminating the need to reserve more space to prevent excessive polishing waste and scraps from damaging the product area during cutting. At the same time, it can also effectively prevent the laser cutting machine 4 from cutting into the product area, thereby providing a manufacturing device that can accurately cut the light guide plate body 9 for continuous production to form large-size light guide plates.
[0041] Please refer to Figure 2 In order to improve the accuracy of detection and image acquisition, the positioning and cutting device may also include an illumination device 5, which is arranged on one side of the carrying and moving device 7, and is used to provide illumination light toward one or a combination of the trigger target 92, the first positioning target 93 and the second positioning target 94. In this way, the trigger target 92, the first positioning target 93 and the second positioning target 94 can be illuminated during the production process to improve the detection sensitivity and the image clarity of the first positioning target 93 and the second positioning target 94 in the first image and the second image.
[0042] Furthermore, the lighting device 5 can be pivotally mounted on a gantry bracket 6, and the lighting device 5 can rotate relative to the gantry bracket 6, thereby effectively improving the adjustment flexibility of the lighting device 5 to change the light emitting direction of the lighting device 5 according to lighting requirements.
[0043] Please refer to Figure 6 and Figure 7 The positioning and cutting device can also be used to produce a continuously produced light guide plate body 9 with optical structures on both sides. In this application state, one side surface of the continuously produced light guide plate body 9 also has a plurality of V-shaped grooves 95, and the V-shaped grooves 95 are arranged in parallel and spaced. Specifically, within the range of the corresponding dot design area 91, the continuously produced light guide plate body 9 has optical dots on one side surface and V-shaped grooves 95 on the other side surface. After being cut by the positioning and cutting device, a large-sized light guide plate with optical structures on both sides can be made.
[0044] When the workpiece processed by the positioning and cutting equipment is the above-mentioned continuously produced light guide plate 9 with the V-shaped groove 95, the positioning and cutting equipment can also be provided with a lighting device 5. However, in order to avoid affecting the lighting effect on the trigger target 92, the first positioning target 93 and the second positioning target 94, the irradiation direction of the lighting device 5 is parallel to the extension direction of the V-shaped groove 95 to prevent the V-shaped groove 95 structure from changing the light path and affecting the lighting effect.
[0045] In the aforementioned application state, the lighting device 5 can also be pivotally mounted on the gantry bracket 6 and can rotate relative to the gantry bracket 6, so as to flexibly adjust the illumination direction of the lighting device 5 according to lighting requirements such as differences in workpieces.
[0046] To summarize the above, the large-size light guide plate positioning and cutting method and positioning and cutting equipment of the present invention are to set trigger targets, first and second positioning targets at specific positions on the continuously produced light guide plates, and use detection and image acquisition devices to accurately determine the size of the finished light guide plate during cutting, and accurately cut to obtain the required large-size light guide plate products. Through the positioning and cutting method and positioning and cutting equipment, the reserved cutting space can be reduced, thereby effectively reducing the waste dust and scraps generated by subsequent polishing and finishing, reducing material waste, and at the same time ensuring that the dot design area will not be damaged during cutting, thereby improving the production yield and quality of large-size light guide plate products. In order to enhance the detection accuracy and the clarity of image acquisition, this can be achieved by setting a lighting device in the direction of the production line to illuminate the trigger target, the first positioning target, and the second positioning target; and when a lighting device is provided, the lighting device can be pivoted on the gantry bracket and the lighting device can be rotated relative to the gantry bracket, so as to facilitate flexible adjustment of the illumination direction of the lighting device according to the needs of workpiece differences; in addition, the positioning and cutting method and the positioning and cutting equipment can be suitable for the production of large-size light guide plates with optical structure design on both sides. In this case, one side of the continuously produced light guide plate body also has a V-shaped groove, so as to facilitate cutting by the positioning and cutting method and the positioning and cutting equipment to form a large-size light guide plate with both optical dots and V-shaped grooves, and in this processing application, the positioning and cutting method and the positioning and cutting equipment can also be provided with a lighting device, and the illumination direction of the lighting device is parallel to the V-shaped groove to avoid the V-shaped groove affecting the lighting effect.
[0047]
Explanation of symbols
[0048] 1 Trigger detector
[0049] 2. First Image Collector
[0050] 3 Second image collector
[0051] 4. Laser cutting machine
[0052] 5 lighting fixtures
[0053] 6 Gantry bracket
[0054] 7 Carrying mobile device
[0055] 8 Processors
[0056] 9 Continuously produced light guide plate
[0057] 90 Safe cutting area
[0058] 91 Dot Design Zone
[0059] 92 Trigger Target
[0060] 93 First Positioning Target
[0061] 94 Second positioning target
[0062] 95 V-groove
[0063] AProduction line direction
[0064] Steps S01 to S06
Claims
1. A positioning and cutting method for a large-size light guide plate, comprising the following steps: A trigger detector, a first image collector and a second image collector are sequentially arranged along a production line, so that the trigger detector is located at the rear side of the first image collector, and the first image collector is located at the rear side of the second image collector; A continuously produced light guide plate body is provided, and is advanced toward the production line, wherein the continuously produced light guide plate body is defined with a plurality of safety cutting areas and a plurality of dot design areas, the safety cutting areas are arranged in front of the dot design areas, the continuously produced light guide plate body has a plurality of trigger targets, a plurality of first positioning targets and a plurality of second positioning targets, the trigger targets are respectively located in each of the safety cutting areas, the first positioning targets are respectively located in the front edge of the dot design areas, and the second positioning targets are respectively located in the rear edge of the dot design areas; When the trigger detector detects any of the trigger targets, the trigger detector sends a signal to the first image collector and the second image collector to drive the first image collector and the second image collector to simultaneously collect images, thereby obtaining a first image including the first positioning target located at the front side of any of the mesh design areas and a second image including the second positioning target located at the rear side; Analyzing and calculating the first image and the second image to obtain the size and position of each of the halftone dot design areas; and A laser cutting machine is driven to cut the continuously produced light guide plate body according to the size and position of each of the mesh design areas.
2. The positioning and cutting method of a large-size light guide plate as described in claim 1 further includes, before the step of "providing a continuously produced light guide plate body and advancing it in the direction of the production line", setting a lighting device in the direction of the production line to provide lighting light toward one of the trigger target, the first positioning target and the second positioning target or a combination thereof.
3. The method for positioning and cutting a large-size light guide plate according to claim 1, wherein: One side surface of the continuously produced light guide plate body is also provided with a plurality of V-shaped grooves, and the V-shaped grooves are arranged in parallel and at intervals.
4. The positioning and cutting method of a large-size light guide plate according to claim 3, wherein: It also includes setting a lighting device in the direction of the production line before the step of "providing a continuous production light guide plate body and advancing it in the direction of the production line", for providing lighting light toward one of the trigger target, the first positioning target and the second positioning target or a combination thereof, wherein the irradiation direction of the lighting device is parallel to the extension direction of the V-groove.
5. The positioning and cutting method for a large-size light guide plate according to claim 2 or 4, wherein: The lighting device is pivotally mounted on a gantry bracket and can rotate relative to the gantry bracket.
6. A positioning and cutting device for a large-size light guide plate, comprising: A trigger detector; a first image collector, disposed on one side of the trigger detector; a second image collector, disposed on one side of the first image collector, wherein the trigger detector, the first image collector and the second image collector are arranged in sequence according to a production line direction, so that the trigger detector is located at the rear side of the first image collector, and the first image collector is located at the rear side of the second image collector; a carrying and moving device, arranged on one side of the trigger detector, the first image collector and the second image collector, for placing a continuous production type light guide plate body and moving it along the production line direction; wherein the continuous production type light guide plate body is defined with a plurality of safety cutting areas and a plurality of mesh design areas, the safety cutting areas are arranged in front of the mesh design areas, the continuous production type light guide plate body has a plurality of trigger targets, a plurality of first positioning targets and a plurality of second positioning targets, the trigger targets are respectively located in each of the safety cutting areas, the first positioning targets are respectively located at the front edge of the mesh design areas, and the second positioning targets are respectively located at the rear edge of the mesh design areas; wherein the continuous production type light guide plate body is driven by the carrying and moving device to move along the production line direction and when the trigger detector detects any of the trigger targets, the trigger detector sends a signal to the first image collector and the second image collector to drive the first image collector and the second image collector to simultaneously perform image acquisition, thereby obtaining a first image including the first positioning target located in front of any of the mesh design areas and a second image of the second positioning target at the rear side; a processor, electrically connected to the first image collector and the second image collector, configured to receive the first image and the second image, and analyze and calculate the first image and the second image to obtain the size and position of each of the dot design areas; and A laser cutting machine is arranged on one side of the carrying mobile device and is electrically connected to the processor to cut the continuously produced light guide plate body according to the size and position of each of the mesh design areas.
7. The positioning and cutting equipment for large-size light guide plates as described in claim 6 further includes an illumination device, which is arranged on one side of the carrying movable device, and is used to provide illumination light toward one or a combination of the trigger target, the first positioning target and the second positioning target.
8. The positioning and cutting device for a large-size light guide plate according to claim 6, wherein: One side surface of the continuously produced light guide plate body is also provided with a plurality of V-shaped grooves, and the V-shaped grooves are arranged in parallel and at intervals.
9. The positioning and cutting equipment for large-size light guide plates as described in claim 8, further includes an illumination device, arranged on one side of the carrying movable device, for providing illumination light toward one or a combination of the trigger target, the first positioning target and the second positioning target, wherein the illumination direction of the illumination device is parallel to the extension direction of the V-shaped groove.
10. The positioning and cutting device for a large-size light guide plate according to claim 7 or 9, wherein: The lighting device is pivotally mounted on a gantry bracket and can rotate relative to the gantry bracket.