FPC reinforcing process by visually identifying reinforcing positions

Abstract

The present application relates to the technical field of FPC production, and more particularly to an FPC reinforcing process through visual identification of reinforcing positions, the FPC comprising a top surface and a bottom surface, the top surface being used for welding elements, and the bottom surface being used for fixing reinforcing plates, comprising the following steps: A. clamping the FPC and straightening the FPC; B. taking a photo of the FPC to obtain an image of the top surface of the FPC; C. obtaining the element distribution of the top surface of the FPC in the image of the top surface of the FPC, and planning the positions of the reinforcing plates on the bottom surface of the FPC and the areas of the reinforcing plates required according to the element distribution; and D. fixing the reinforcing plates on the bottom surface of the FPC according to the planned positions of the reinforcing plates. The present application plans the reinforcing positions actually required by the FPC and the reinforcing areas of the reinforcing positions according to the element distribution of the top surface of the FPC, so as to achieve the effects of cost saving and reinforcing effect meeting the expected effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of FPC production, in particular to an FPC reinforcing process through visual identification of reinforcing positions. BACKGROUND

[0002] Due to the characteristics of FPC such as being able to be bent at will and being light in weight, the FPC is prone to be broken when being bent, or to be broken due to insufficient strength when the components are densely distributed. Therefore, for some FPCs, after the assembly and welding of components are completed, the FPCs still need to be reinforced, for example, a reinforcing plate is installed on the bottom surface of the FPC (i.e. the surface on which no components are welded) to improve the strength of the FPC through the reinforcing plate.

[0003] The commonly used FPC reinforcing plate is usually FR4, PI or stainless steel sheet, which is equipped according to the requirements of different industries for FPC. However, in order to avoid excessive interference with the flexible characteristics of the FPC, the reinforcing method is usually performed at specific positions, rather than reinforcing the entire FPC.

[0004] However, in the prior art, the reinforcing method is usually to directly fix a reinforcing plate of a fixed size to the corresponding position of the FPC. This method does not adaptively adjust according to the components on the FPC, which is prone to waste reinforcing materials, or not to achieve the ideal reinforcing effect due to insufficient reinforcing area or position deviation. SUMMARY

[0005] The present application provides an FPC reinforcing process through visual identification of reinforcing positions, which plans the reinforcing positions and reinforcing areas according to the actual distribution of electronic components on the FPC, so as to achieve the purposes of saving cost and achieving the best reinforcing effect.

[0006] In order to solve the above technical problems, the present application adopts the following technical solutions:

[0007] The present application provides an FPC reinforcing process through visual identification of reinforcing positions, the FPC includes a top surface and a bottom surface, the top surface is used for welding components, and the bottom surface is used for fixing reinforcing plates, and the process includes the following steps:

[0008] A. clamping the FPC and straightening the FPC;

[0009] B. taking a photo of the FPC to obtain an image of the top surface of the FPC;

[0010] C. obtaining the component distribution on the top surface of the FPC in the image of the top surface of the FPC, and planning the positions of the reinforcing plates on the bottom surface of the FPC and the areas of the reinforcing plates required according to the component distribution;

[0011] D. fixing the reinforcing plates on the bottom surface of the FPC according to the planned positions of the reinforcing plates.

[0012] Further, step C specifically comprises:

[0013] C1. Analyzing the image of the top surface of the FPC to obtain the element type and the element position of the top surface of the FPC;

[0014] C2. Estimating the load bearing of the FPC at different positions according to the element type, and judging the strength value lost by the FPC at each position due to the element puncture according to the element position;

[0015] C3. Combining the load bearing and the lost strength value, estimating the position of the FPC required for reinforcement and the reinforcement area of each reinforcement position.

[0016] Further, the judging of the strength value lost by the FPC at each position due to the element puncture according to the element position specifically comprises:

[0017] C21. Dividing the position distribution of the elements into regions;

[0018] C22. Counting the element type and the number of elements of each type in a single region;

[0019] C23. Combining the number of elements of each type and the preset strength loss value of different elements to the FPC, calculating the total strength loss value in the region;

[0020] C24. Combining the total strength loss value and the unit reinforcement value of the reinforcement plate to calculate the reinforcement plate area required for the region;

[0021] C25. Executing steps C22-C25 for each region respectively.

[0022] Further, when the reinforcement plate area required for a region overlaps with the reinforcement plate area of an adjacent region, the following steps are executed:

[0023] The regions with overlapping reinforcement plate area are divided into the same region, and then steps C22-C23 are executed.

[0024] Further, step B further comprises: obtaining the side image of the FPC;

[0025] Step C21 further comprises: obtaining the thickness of the FPC in different regions through the side image of the FPC to estimate the actual strength value of each region of the FPC;

[0026] In step C24, the reinforcement plate area of the region also needs to be calculated in combination with the actual load bearing value of the region.

[0027] Further, step A specifically comprises:

[0028] Clamping the two sides of the FPC by two flexible clamps respectively;

[0029] controlling the two flexible clamps to move away from each other, and monitoring the change of the FPC reaction force on the flexible clamps while the flexible clamps are moving;

[0030] when the FPC reaction force on the flexible clamps reaches a preset value, or the deflection value of the FPC is less than a preset deflection value, the flexible clamps stop moving.

[0031] Further, the two flexible clamps respectively clamping the two sides of the FPC specifically includes:

[0032] using the flexible clamps to respectively contact the top and bottom of the FPC through two air bags;

[0033] inflating the air bags, and monitoring the force between the air bags and the FPC;

[0034] when the force reaches a preset value, stop inflating the air bags.

[0035] Further, step D specifically includes:

[0036] D1. According to the results of step C, prepare a corresponding number and area of reinforcing plates;

[0037] D2. According to the results of step C, place the reinforcing plates in the magnetic fixture;

[0038] D3. Use the magnetic fixture to magnetically attract the reinforcing plates for positioning;

[0039] D4. Contact the bottom surface of the FPC with the reinforcing plate, and then fix the FPC with the reinforcing plate.

[0040] Further, step D4 specifically includes:

[0041] D41. Press the FPC with the reinforcing plate to achieve primary fixation;

[0042] D42. Move the FPC after pressing the reinforcing plate to a welding device, and use the welding device to fix the FPC with the reinforcing plate for secondary fixation.

[0043] Further, step D41 further includes:

[0044] According to the results of step C, determine whether the FPC can be drilled, and if not, execute steps D41-D42, and if yes, execute steps D43-D45;

[0045] D43. Drill the FPC;

[0046] D44. Contact the bottom surface of the FPC with the reinforcing plate, and then add flux in the hole of the FPC;

[0047] D45. Welding the holes of the FPC, then performing the headquarters after D42.

[0048] The present application has the beneficial effect that the present application plans the reinforcing positions and the reinforcing areas of the reinforcing positions on the top surface of the FPC according to the element distribution, thereby achieving the effect of saving cost and the expected effect of reinforcing effect. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 The present application is a schematic diagram.

[0050] Figure 2 The present application is a schematic diagram of a flexible clamp.

[0051] Figure 3 The present application is a schematic diagram of a magnetic clamp.

[0052] Reference signs: 1 - finger cylinder, 2 - air bag, 3 - limiting piece, 4 - pressure sensor, 5 - horizontal moving device, 6 - magnetic clamp, 7 - electromagnetic structure. DETAILED DESCRIPTION

[0053] In order to facilitate the understanding of those skilled in the art, the present application will be further described below in conjunction with the embodiments and the drawings. The content mentioned in the embodiments is not a limitation of the present application. The present application will be described in detail below in conjunction with the drawings.

[0054] As shown in Figure 1 The present application provides an FPC reinforcing process by visual recognition of reinforcing positions. The FPC includes a top surface and a bottom surface. The top surface is used for welding elements, and the bottom surface is used for fixing reinforcing plates. The process includes the following steps:

[0055] A. Clamping the FPC and straightening the FPC;

[0056] B. Taking a photo of the FPC to obtain a top surface image of the FPC;

[0057] C. Obtaining the element distribution on the top surface of the FPC in the image of the top surface of the FPC, and planning the position of the reinforcing plate on the bottom surface of the FPC and the area of the reinforcing plate required according to the element distribution;

[0058] D. According to the planned reinforcing plate position, fixing the reinforcing plate on the bottom surface of the FPC.

[0059] Through research, the position of the FPC that needs to be reinforced is often the position of the element, which is based on the need of the element to pierce the FPC for fixation, which increases the load of the FPC due to the weight of the element itself, and the strength of the position where the FPC is pierced will inevitably decrease.

[0060] Therefore, this invention obtains the component distribution position by capturing images of the straightened FPC with a vision device, and sets the number and area of ​​reinforcing plates according to the component distribution of the FPC, thereby ensuring that the position where each reinforcing plate is connected to the FPC is the position where the FPC most needs reinforcement, so that the reinforcing plate will not be wasted due to the actual area being larger than the required value, and the strength of the FPC will not be less than expected due to the inaccurate position of the reinforcing plate.

[0061] In this embodiment, step A specifically includes:

[0062] The FPC is held in place by two flexible clamps on both sides.

[0063] Control the two flexible clamps to move away from each other, and monitor the change of the reaction force of the flexible clamps on the FPC while the flexible clamps are moving;

[0064] When the flexible clamp is subjected to a reaction force from the FPC that reaches a preset value, or when the deflection value of the FPC is less than the preset deflection value, the flexible clamp will no longer move.

[0065] By using flexible clamps to hold the FPC, it is possible to ensure that the FPC is not damaged while maintaining stable clamping, and also to avoid the FPC having high deformation stress due to rigid clamping, which would affect the actual effect of acquiring FPC images.

[0066] And such Figure 2 As shown, the flexible clamp of this embodiment has the following structure: it includes a finger cylinder 1, a lateral movement device 5 and two airbags 2. The two airbags 2 are respectively installed on the two output ends of the finger cylinder 1. The lateral movement device 5 is used to drive the finger cylinder 1 to move laterally. There is a limiting member 3 between the two output ends of the finger cylinder 1. The airbags 2 are also equipped with pressure sensors.

[0067] The transverse movement device 5 is preferably an electric cylinder driven by a servo motor, which can precisely control the movement distance of the finger cylinder 1; while the limiting member 3 is used to limit the minimum distance between the two output ends of the finger cylinder 1. For example, when the thickness of the FPC is L, it is preferable to make the minimum distance between the two output ends 1.5-3L.

[0068] Based on the aforementioned flexible clamps, the specific steps of clamping both sides of the FPC using two flexible clamps include:

[0069] Flexible clamps are used to press against the top and bottom of the FPC via two airbags 2 respectively;

[0070] Inflate airbag 2 and monitor the force between airbag 2 and FPC;

[0071] When the applied force reaches the preset value, the inflation of airbag 2 will stop.

[0072] In order to ensure the safety of the FPC, taking the side clamping the FPC as an example, the present application is first controlled by the horizontal moving device 5 to move the finger cylinder 1 until the FPC is located between the two air bags 2, and then the finger cylinder 1 is actuated to control the two air bags 2 to approach each other until the limit piece 3 stops the finger cylinder 1 from continuing to act, and the distance between the two air bags 2 is necessarily greater than the thickness of the FPC, and then the air bags 2 are inflated, and the air bags 2 are expanded to reduce the distance between the two air bags 2; when the air bags 2 contact the FPC, the pressure sensor 4 arranged on the surface of the air bag 2 will be triggered by the FPC to send a signal, so that the current pressure applied by the air bag 2 to the FPC can be known according to the signal. When the above-mentioned pressure reaches the preset value, the air bag 2 is no longer inflated, and at this time the clamping force of the air bag 2 on the FPC is necessarily capable of stably clamping the FPC and will not cause excessive extrusion to the FPC.

[0073] The air bag 2 is used to realize the final compensation, which is beneficial to ensure the safety of the FPC. And the limit piece 3 cooperates with the finger cylinder 1 to ensure that the finger cylinder 1 will not be injured due to insufficient actuation accuracy.

[0074] In the embodiment, the top surface of the FPC is photographed by the industrial camera to obtain the image of the FPC. The high precision of the industrial camera can ensure the accuracy of the image, so that the parameters such as the size, position and number of the elements can be reliably obtained.

[0075] In the embodiment, step C specifically comprises:

[0076] C1. analyzing the image of the top surface of the FPC to obtain the type and position of the elements on the top surface of the FPC;

[0077] C2. calculating the bearing at different positions of the FPC according to the type of the elements, and judging the strength loss value of the FPC at each position due to the elements piercing according to the position of the elements;

[0078] C3. combining the bearing and the strength loss value to calculate the positions of the FPC required to be reinforced and the reinforcing area of each reinforcing position.

[0079] The image analysis of the FPC can be realized by using AI combined with artificial training. The AI device can analyze the type, position and size of each element according to the features in the image, so as to calculate the bearing of each position of the FPC and the strength loss of the FPC caused by the elements piercing the FPC by combining the pre-recorded parameters such as the pin length and weight of each element.

[0080] The strength and strength loss of the FPC are related to the parameters such as the material, thickness and structure of the FPC, which can be obtained by actual test by those skilled in the art, and therefore the present application will not be described here.

[0081] Since the present application combines the type, position distribution and the like of each element on the FPC to calculate the reinforcing strength, and then uses the reinforcing strength to calculate the required reinforcing plate area, the waste of reinforcing plate can be avoided; and the present application can calculate the position of the FPC that needs to be reinforced, and then use the visual cooperation robot to position the reinforcing plate and the position of the FPC that needs to be reinforced, so as to accurately fix the reinforcing plate to the required position of the FPC, and the reinforcing plate can be used most efficiently.

[0082] In the present embodiment, the strength value lost by each position of the FPC due to the element piercing is determined according to the element position, which specifically includes:

[0083] C21. The position distribution of the element is regionally divided;

[0084] C22. The element type and the number of each type of element in a single region are counted;

[0085] C23. The total strength loss value in the region is calculated by combining the number of each type of element and the preset strength loss value of different elements to the FPC;

[0086] C24. The required reinforcing plate area of the region is calculated by combining the total strength loss value and the unit reinforcing value of the reinforcing plate;

[0087] C25. Steps C22-C25 are performed for each region respectively.

[0088] Since the elements on the FPC are not uniformly distributed, the peripheral circuit is usually arranged around each integrated chip, and the elements on the FPC are distributed in a modular manner. For example, when only scattered elements are welded in a region, the region actually does not need to be reinforced.

[0089] Therefore, the present application divides the FPC into regions, and the division method is as follows:

[0090] First, take the integrated chip as the reference point, and the elements around the integrated chip are all included in a region, at this time the remaining boundary is defined as "the distance between the outermost element and the adjacent element exceeds the preset distance";

[0091] Second, on the basis of the first step, the region is rectangular as much as possible; only when the region is at the boundary of the FPC, it can not be rectangular;

[0092] Third, after completing the division of the region according to the above, the space between adjacent regions is also regarded as a region.

[0093] By the above method, the FPC is divided into regions, the number, specifications and types of electronic components in each region are determined, and then C21-C25 are executed to complete the corresponding calculation for the entire FPC. In the above calculation, an expected value of the strength should be set. If the actual strength value of the region of the FPC is still greater than the expected strength value after calculating the strength loss value, it is proved that the region does not need to be reinforced; and if the actual strength value calculated is less than the expected strength value, reinforcement is necessary.

[0094] Due to the above calculation, some regions do not need to be reinforced. Therefore, when a region needs to be reinforced due to excessive strength loss and heavy load, resulting in the area of the reinforcing plate being greater than the area of the region, the adjacent region can be "borrowed" to effectively ensure sufficient space for the reinforcing plate.

[0095] Specifically, there is another case: when two adjacent regions need to be reinforced, and the reinforcing plate area required by one of the regions overlaps with the reinforcing plate area of the adjacent region, the following steps are executed:

[0096] The regions whose required reinforcing plate areas overlap are divided into the same region, and then steps C22-C23 are executed.

[0097] That is, in the above situation, the two regions are directly divided into the same region (referred to as a large region) for reinforcing plate calculation. If the adjacent regions of the large region do not need to be reinforced, a large area reinforcing plate can be set to "borrow" space from the adjacent regions. If the adjacent regions also need to be reinforced, the next adjacent region is also divided into the large region, and the area of the reinforcing plate required is calculated. Since there are inevitably multiple regions that do not need to be reinforced in actual application, the above method of forming a large region is continuously calculated to finally obtain the area of the reinforcing plate corresponding to the large region.

[0098] It should be noted that when calculating the reinforcing area of the large region, the reinforcing areas required by the regions in the large region are usually added together; or the load values and the lost strength values of the regions in the large region are summed up, and then the unit reinforcing area of the reinforcing plate is calculated. The former method is simple, but as the area of the reinforcing plate increases, the unit reinforcing strength will also change, so the former method needs to have redundancy when calculating. The latter method is more complex, but it is more suitable for actual reinforcement schemes.

[0099] In this embodiment, step B further includes: obtaining a side image of the FPC.

[0100] That is, based on the current process defects, the thickness of different positions of the FPC will be different, and the thickness difference will also cause the bearing and strength of different positions of the FPC to change. Therefore, when the FPC is photographed, two cameras should be set to photograph the top surface and the side surface of the FPC respectively, the camera on the top surface is used to photograph the elements and the shape and area of the top surface, and the side surface is used to photograph the thickness of different positions of the FPC.

[0101] Therefore, in step C21, the thickness of the FPC in different areas should also be obtained through the side surface image of the FPC to calculate the actual strength value of each area of the FPC;

[0102] In step C24, the area of the reinforcing plate of the area should also be calculated in combination with the actual bearing value of the area. Based on the above photographing of the side surface of the FPC, the actual bearing value of each area of the FPC can be calculated, and the total strength loss value calculated in step B23 should also be calculated in combination with the actual strength value of the area, so that the calculation result is more accurate, and the calculation of the area of the reinforcing plate is also more accurate.

[0103] The thickness value above has little influence, but when combined into the calculation, it can affect the final area of the reinforcing plate, and the area of the reinforcing plate will also affect the bending performance of the FPC. Therefore, more accurate parameter calculation will inevitably have an impact on the subsequent installation and application of the FPC.

[0104] The above mainly discusses how to clamp the FPC under the premise of reducing the internal stress of the FPC and avoiding damage to the FPC, and how to calculate and plan the position and area of the reinforcing plate according to the visual method, and the following also needs to discuss how to apply the above results to the fixation of the FPC and the reinforcing plate.

[0105] Therefore, in the embodiment, step D specifically includes:

[0106] D1. According to the results of step C, prepare reinforcing plates corresponding in number and area;

[0107] D2. According to the results of step C, place the reinforcing plates in the magnetic fixture 6;

[0108] D3. Use the magnetic fixture 6 to magnetically attract the reinforcing plates for positioning;

[0109] D4. The bottom surface of the FPC is in contact with the reinforcing plate, and then the FPC and the reinforcing plate are fixed.

[0110] That is, when steps B and C are performed, the flexible clamp is still clamping the FPC; the first thing to do in step D is to make suitable reinforcing plates according to the calculation results of step C, such as using stainless steel as the reinforcing plate in the embodiment, which should be manufactured as follows:

[0111] The protective film is formed on the plate by exposure and development, and then the plate is etched to form a plurality of blanks of the required area, and the blanks are cleaned and dried to form the reinforcing plate.

[0112] The reinforcing plate formed by wet etching does not have a sharp surface or burr structure, so it does not interfere with the current transmission of the FPC after being fixed. In order to improve efficiency, multiple specifications of reinforcing plates can be prepared at one time, and then used directly when needed.

[0113] The fixing method of the reinforcing plate is magnetic attraction. The reinforcing plate is placed in the magnetic attraction jig 6, and then the electromagnetic structure 7 of the magnetic attraction jig 6 is energized to magnetically attract the reinforcing plate by the magnetic field generated by the electromagnetic structure 7. Then the FPC and the reinforcing plate can be fixed in the predetermined attitude, so that the relative position of the two is basically consistent with the calculation result.

[0114] The structure of the magnetic attraction jig 6 can refer to Figure 3 It actually has a plurality of magnetic attraction structures. After the reinforcing plate is placed, the corresponding magnetic attraction structure directly below the reinforcing plate is driven to complete the magnetic attraction. It will not cause the magnetic field to be too strong due to the energization of all magnetic attraction structures at the same time each time, thereby avoiding affecting the FPC.

[0115] In this embodiment, step D4 specifically includes:

[0116] D41. Press the FPC and the reinforcing plate to achieve one-time fixation;

[0117] D42. Move the FPC with the pressed reinforcing plate to the welding equipment, and use the welding equipment to fix the FPC and the reinforcing plate again.

[0118] That is, the FPC and the reinforcing plate need to be fixed twice. The first time is to press them together to keep their relative attitude unchanged by the intermolecular force, and then the reinforcing plate needs to be welded to the FPC by welding to achieve stable fixation.

[0119] As an extension of the above method, step D41 further includes:

[0120] According to the result of step C, it is determined whether the FPC can be drilled. If not, steps D41-D42 are executed, and steps D43-D45 are executed;

[0121] D43. Drill the FPC;

[0122] D44. Contact the bottom surface of the FPC with the reinforcing plate, and then add flux in the hole of the FPC;

[0123] D45. Welding the hole of the FPC, then performing the headquarters after D42.

[0124] The way of pressing may cause damage to the components of the FPC, so if the area of the FPC itself required to be reinforced is not large, it can be considered to drill additional holes in the FPC, then after the FPC and the reinforcing plate are positioned, flux is added to the drilled holes, and the first fixation is completed directly by welding. In this way, it can be ensured that when the structure composed of the FPC and the reinforcing plate is transferred, the two will not be separated. The subsequent second fixation is also to make the connection between the two more firm, so that when the FPC is subjected to greater impact during subsequent processing and installation of the FPC, the FPC and the reinforcing plate will not be separated.

[0125] Of course, the above-mentioned methods are based on the premise of judging whether the FPC can be drilled or not. Specifically, only when the non-reinforced area of the FPC can be drilled, steps D43-D45 can be performed, otherwise it is more preferred to use the pressing method for the first fixation. In order to press stably, a flexible structure can be used to contact the top surface of the FPC during pressing, and the FPC and the reinforcing plate are pressed at a higher temperature.

[0126] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in any form. Although the present application is disclosed as above with the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-mentioned disclosed technical content without departing from the scope of the technical solution of the present application, and any simple modification, equivalent change and modification of the above-mentioned embodiments within the scope of the technical solution of the present application are all within the scope of the technical solution of the present application.

Claims

1. A FPC reinforcing process for reinforcing a position by visual recognition, the FPC including a top surface for soldering an element and a bottom surface for fixing a reinforcing plate, characterized by, The method comprises the following steps: A. Clamping the FPC and straightening the FPC; B. Taking a photo of the FPC to obtain a top surface image of the FPC; C. Obtaining the element distribution of the top surface of the FPC in the image of the top surface of the FPC, planning the position of the reinforcing plate on the bottom surface of the FPC and the area of the reinforcing plate required according to the element distribution; D. Fixing the reinforcing plate on the bottom surface of the FPC according to the planned position of the reinforcing plate. Step C specifically comprises: C1. Analyzing the image of the top surface of the FPC to obtain the element type and the element position of the top surface of the FPC; C2. Estimating the load bearing at different positions of the FPC according to the element type, and judging the strength loss value of each position of the FPC due to element puncture according to the element position; C3. Combining the load bearing and the lost strength value to estimate the position of the FPC required for reinforcement and the reinforcement area of each reinforcement position.

2. The FPC reinforcement process by visually identifying the reinforcement locations of claim 1, wherein, The specific steps of judging the strength loss value of each position of the FPC due to element puncture according to the element position comprise: C21. Regionally dividing the position distribution of the elements; C22. Counting the element type and the number of elements of each type in a single region; C23. Combining the number of elements of each type and the preset strength loss value of different elements on the FPC to calculate the total strength loss value in the region; C24. Combining the total strength loss value and the unit reinforcement value of the reinforcing plate to calculate the reinforcing plate area required for the region; C25. Executing steps C22-C25 for each region respectively.

3. The FPC reinforcement process by visually identifying the reinforcement locations of claim 2, wherein, When the reinforcing plate area required for a region overlaps with the reinforcing plate area of an adjacent region, the following steps are executed: Divide the regions whose reinforcing plate areas overlap into the same region, and then execute steps C22-C23.

4. The FPC reinforcement process of identifying the reinforcement location by vision according to claim 1, wherein, Step B further comprises: obtaining a side surface image of the FPC; Step C21 further comprises: obtaining the thickness of the FPC in different regions through the side surface image of the FPC to estimate the actual strength value of each region of the FPC; In step C24, the reinforcing plate area of the region also needs to be calculated in combination with the actual load bearing value of the region.

5. The FPC reinforcement process of identifying reinforcement locations by vision according to claim 1, wherein, Step A specifically comprises: Clamping the two sides of the FPC by two flexible clamps respectively; Controlling the two flexible clamps to move away from each other, and monitoring the change of the reaction force of the flexible clamps on the FPC while the flexible clamps are moving; When the reaction force of the flexible clamps on the FPC reaches a preset value, or the deflection value of the FPC is less than a preset deflection value, the flexible clamps stop moving.

6. The FPC reinforcement process of identifying reinforcement locations by vision according to claim 5, wherein, The specific steps of clamping the two sides of the FPC by two flexible clamps respectively comprise: Using the flexible clamps to contact the top and bottom of the FPC by two air bags respectively; Inflating the air bags and monitoring the force between the air bags and the FPC; When the force reaches a preset value, stop inflating the air bags.

7. The FPC reinforcement process of identifying reinforcement locations by vision according to claim 1, wherein, Step D specifically comprises: D1. Preparing reinforcing plates of corresponding number and area according to the results of step C; D2. Placing the reinforcing plates in the magnetic clamp according to the results of step C; D3. Positioning the reinforcing plates by using the magnetic clamp to magnetically attract the reinforcing plates; D4. Contacting the bottom surface of the FPC with the reinforcing plates, and then fixing the FPC with the reinforcing plates.

8. The FPC reinforcement process of identifying reinforcement locations by vision according to claim 7, wherein, Step D4 specifically comprises: D41. Pressing the FPC with the reinforcing plates to achieve a one-time fixation; D42. The FPC after the pressing of the reinforcing plate is transferred to a welding device to fix the FPC and the reinforcing plate again.

9. The FPC reinforcement process of identifying reinforcement locations by vision according to claim 8, wherein, Before step D41, there are also steps: According to the result of step C, it is determined whether the FPC can be drilled. If not, steps D41-D42 are executed. If yes, steps D43-D45 are executed. D43. The FPC is drilled. D44. The bottom surface of the FPC is contacted with the reinforcing plate, and then flux is added to the hole of the FPC. D45. The hole of the FPC is welded, and then step D42 is executed.

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