Wiring auxiliary structure of screen FPC end and screen lightening detection process

Abstract

The invention discloses a wiring auxiliary structure of a screen FPC end and a screen lightening detection process, the structure comprises an epitaxial bearing platform, a base, a wiring platform, a needle die, a pressing module, a jacking module and a beating and aligning assembly, the pressing module comprises a pressing die strip and a power device, the needle die and the wiring platform are in butt joint to form a stepped matching surface, and the needle die is also provided with an air leakage channel. On one hand, the FPC end is flattened on the basis of negative pressure adsorption force formed by the downward pressing die strip in combination with movement in the up-down and front-back directions, meanwhile, position calibration of the flattened FPC end is conducted on the basis of left-right patting, and under the matched pressing fit of a matching face and the screen FPC end, accurate butt joint of an interface and a needle die is achieved, the butt joint dislocation rate is reduced, and potential safety hazards are eliminated; and on the other hand, the air flow formed by lamination is discharged based on the air leakage channel, lamination hollowing is avoided, the butt joint stability of the interface and the needle mold is improved, the displacement rate of the interface and the needle mold is reduced, and therefore the accuracy rate of the screen lightening test is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of screen detection, and in particular relates to a wiring auxiliary structure of a screen FPC end, and also relates to a screen lighting detection process. Background Art

[0002] Currently, in screen components, the FPC (the abbreviation of Flexible Printed Circuit) end refers to the connecting part of the flexible printed circuit, which is mainly responsible for signal transmission, power supply and mechanical connection.

[0003] However, the conventional FPC end has a certain degree of flexibility (including base film, printed circuit layer, information interface), so in the process of lighting up the screen (that is, connecting the circuit and signal from the information interface), it is necessary to use alignment auxiliary positioning, for example: the screen is placed on the fixture to form a position, and the FPC end is positioned on the bearing platform, and then the cylinder presses down the FPC to form a position, and then the needle mold is lifted up to contact with the FPC, and the circuit (or signal) is connected, and the screen lighting test can be carried out. However, the above alignment and docking method has the following technical defects: 1) It is difficult for the FPC end to be in a relatively flat or flat state to form a positional contact with the connector to connect the circuit, resulting in a high probability of short circuit or open circuit, signal blockage or poor signal flow, which not only increases the failure rate of the screen lighting test, but also increases the circuit damage rate of the circuit board; 2) The structure used for bearing and positioning cannot be effectively corrected due to the softness of the FPC end, resulting in a high probability of docking misalignment, which will also increase the safety hazard rate of detection; 3) During the pin mold lifting process, the bottom surface of the FPC end cannot effectively leak the airflow formed by the pressing before the instantaneous contact, which affects the accuracy of the docking due to the existence of hollowing. At the same time, it also increases the relative displacement rate of the FPC end and the pin mold after docking, further increasing the failure rate of the lighting test. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an improved wiring auxiliary structure for the FPC end of the screen, and also relates to a screen lighting detection process.

[0005] To achieve the above object, the present invention adopts the following scheme: A wiring auxiliary structure for the FPC end of a screen includes an extension bearing platform, a base, a wiring platform, a needle mold, a lower pressing mold group, and an upper pressing mold group formed on a screen positioning seat, wherein the lower pressing mold group includes a lower pressing mold strip and a power device. The bottom surface of the lower mold strip is flat, and is concave inward from the bottom surface to form multiple groups of negative pressure holes, each group of negative pressure holes is connected to the negative pressure source based on the flow control valve and the pipeline, wherein the multiple groups of negative pressure holes work in whole or in part to form negative pressure adsorption forces of different magnitudes, and are divided into a leveling mode and a pressing mode based on the magnitude of the negative pressure adsorption force; the power device includes a first power member driving the lower mold strip to move in the up and down direction, and a second power member driving the lower mold strip to move in the length direction of the FPC end of the screen; The needle mold is docked with the wiring platform to form a stepped matching surface, and an air release channel is also provided on the needle mold; the wiring auxiliary structure also includes a snapping component located on opposite sides of the wiring platform and flapping relative to the screen FPC end of the edge of the lower pressure mold strip with the bottom center line as the reference, wherein in the leveling mode, the screen FPC end is adsorbed on the bottom surface of the lower pressure mold strip, based on the movement of the first power member, the second power member and the snapping component, so that the screen FPC end in the adsorption is displaced relative to the lower pressure mold strip to be flattened and corrected; in the pressing mode, the flattened screen FPC end is fixed to the bottom surface of the lower pressure mold strip from the top surface, the needle mold is located below the screen FPC end, and the upper top module drives the matching surface to fit the screen FPC end upward to connect the interface of the needle mold and the screen FPC end, and the airflow between the matching surface and the screen FPC end during fitting is discharged from the air release channel.

[0006] According to a specific implementation and preferred aspect of the present invention, multiple groups of negative pressure holes are allocated based on the aperture size to form at least a first negative pressure group and a second negative pressure group, the first negative pressure group forms a negative pressure of F1, and the second negative pressure group forms a negative pressure of F2, wherein F1 < F2, and the first negative pressure group and the second negative pressure group work independently to form a leveling mode or a pressing mode. Based on the different adsorption forces in different modes, the required position adjustment and position fixation can be met, thereby providing wiring assistance more accurately.

[0007] Preferably, a third negative pressure group is formed based on the distribution of the aperture size in the multiple groups of negative pressure holes. The negative pressure formed by the third negative pressure group is F3, wherein F1<F3<F2. In the leveling mode, the combined force of F1 and F2 is adsorbed. Under the external force of the snapping component, the screen FPC changes the adsorption position of the first negative pressure group based on the third negative pressure group, and changes the positions of the first negative pressure group and the third negative pressure group under the drive of the second power member; in the pressing mode, the combined force of F2 and F3 is adsorbed to achieve parallel bonding between the bottom surface and the surface of the screen FPC end. In other words, based on the continuous negative pressure formed by the third negative pressure group, it is avoided that the movement correction amplitude of the screen FPC end is too large during the snapping process, and the probability of the screen FPC end falling off during the snapping process is also reduced; in addition, when in a fixed position, it can also assist in positioning to maintain the flatness of the surface of the screen FPC end.

[0008] In some specific embodiments, the third negative pressure group is located in the middle of the lower pressure mold bar, the second negative pressure group is distributed at both ends of the lower pressure mold bar based on the third negative pressure group, and the first negative pressure group is distributed between the second negative pressure group and the third negative pressure group based on the third negative pressure group. Such a layout is mainly convenient for the flow control valve to control the negative pressure of each branch.

[0009] According to another specific implementation and preferred aspect of the present invention, the centers of multiple groups of negative pressure holes are aligned, and the center line formed coincides with the center line of the bottom surface or is symmetrically arranged about the center line. In short, multiple groups of negative pressure holes can have a row, and the center line of the row coincides with the center line of the bottom surface; or, multiple groups of negative pressure holes are divided into multiple rows, and the center lines of the multiple rows are symmetrically arranged about the center line. Regardless of which implementation method is used, the final result can form the adsorption force required for flattening and correction of the FPC end of the screen; at the same time, such a layout is more conducive to maintaining relatively parallel adsorption between the FPC end of the screen and the lower pressure mold strip.

[0010] In some specific embodiments, the upper end of the first power member is fixedly connected to the moving end of the second power member through a bracket, the lower pressing mold bar is installed at the lower end of the first power member, and the first power member and the second power member move synchronously or separately to absorb and flatten the screen FPC end. Generally, the two power members move synchronously, so that the lower pressing mold bar can press down and move forward synchronously to quickly complete the flattening action.

[0011] According to another specific implementation and preferred aspect of the present invention, the pin mold is fixedly installed at the front end of the wiring platform, and the pin mold and the wiring platform form a step that matches the interface of the screen FPC end, wherein a step-type matching surface is formed between the wiring platform and the pin mold. Based on the step matching, not only the accuracy of docking is improved, but also the displacement rate after docking is reduced.

[0012] In some specific embodiments, the air release channel extends along the length direction of the lower die strip and there are multiple air release channels, wherein the multiple air release channels are distributed side by side on the needle die. Based on multiple air releases, hollowing after pressing is avoided, and the flatness and stability of pressing are improved.

[0013] Furthermore, the top front end of the wiring platform forms the bottom surface of the air release channel. Such a layout is more conducive to the release of airflow during pressing.

[0014] More preferably, the air leakage channels on the two opposite sides of the needle mold are also connected to the outside from the outside to avoid poor air discharge at the edge.

[0015] According to another specific implementation and preferred aspect of the present invention, the width of the lower mold strip is less than or equal to the width of the extended portion of the screen FPC end from the extended bearing platform. It is sufficient to use the bottom center line of the lower mold strip as a reference, but considering the same product, it is easier to align the widths. If the width of the lower mold strip is small, it is also possible, and the aligning stroke needs to be set or the aligning needs to be performed according to the width of the edge that emerges.

[0016] Preferably, the base includes a base body, two frames installed on the base body and located on opposite sides, and the aligning assembly includes aligning motors installed on the frames respectively, and the aligning ends of the two aligning motors are arranged opposite to each other, and the screen FPC end protruding from the side of the lower mold strip is aligningly corrected based on the aligning ends being in contact with or away from the side of the lower mold strip, wherein after correction, the side of the extended part of the screen FPC end from the extended bearing platform is flush with the side of the lower mold strip; or the side of the extended part of the screen FPC end from the extended bearing platform is equal in width from both sides of the lower mold strip. Here, the correction states of equal width and different width are further described to meet actual processing needs and increase practicality.

[0017] Furthermore, the wiring platform is located between the two frames and fixed on the seat body. The outer diameter of the aligning end of the aligning end head is reduced from the outer periphery to the inside to avoid the wiring platform, and the formed aligning part is columnar, wherein the outer end surface of the column and the side surface of the lower pressure mold strip are arranged in parallel.

[0018] Furthermore, the aligning power device is a power telescopic rod, and the power telescopic rod is driven by pneumatic, hydraulic or electric. The present application adopts pneumatic.

[0019] Preferably, a through hole extending up and down is formed at the bottom of the seat body, and the upper ejection mold set is a lifting power rod inserted into the through hole, wherein the base is lifted up based on the up and down movement of the lifting power rod. Here, the relative pressing between the lower pressing mold strip, the screen FPC end, the wiring platform, and the needle mold is achieved based on the overall upward movement of the base.

[0020] In addition, the base can be adjusted horizontally relative to the extension bearing platform along the width direction of the lower mold strip. Based on the horizontal adjustment, the alignment test requirements of the FPC end of different wide screens can be met.

[0021] Another technical solution of the present invention is: a screen lighting detection process, which adopts a wiring auxiliary structure of the screen FPC end and includes the following steps: S1. Screen positioning Position the screen with the FPC end on the screen positioning seat, and at the same time, the FPC end is placed on the extension bearing platform and extends outward; S2, FPC end alignment correction Based on the driving of the first power member and the second power member, the lower pressure mold bar is moved downward and the outer extension of the FPC end is adsorbed by negative pressure to perform a flattening operation so that the entire FPC end extending outward is in a flattened state; at the same time, the aligning components on both sides relatively flap the edge of the lower pressure mold bar with the bottom center line as the reference to perform alignment correction of the screen FPC end; S3, docking and power on In the flattening and correction mode of the screen FPC end, the wiring platform and needle mold aligned from the bottom move upward and press the bottom surface of the screen FPC end, and the matching surface matches the interface of the screen FPC end. At the same time, the interface and the needle mold keep pressing and connecting, and the airflow between the matching surface and the screen FPC end is discharged from the air discharge channel during the pressing process. Finally, the power is turned on to perform the screen lighting test.

[0022] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: In the existing screen lighting test based on the FPC end wiring, it is difficult for the FPC end to be in a relatively flat or flattened state to form a positioning contact with the connector to connect the circuit, resulting in a high probability of short circuit or open circuit, signal blockage or poor signal flow, which not only increases the failure rate of the screen lighting test, but also increases the circuit damage rate of the circuit board; at the same time, the structure used for bearing and positioning cannot be effectively corrected due to the softness of the FPC end, resulting in a high probability of docking misalignment, and also increases the safety hazard rate of detection; in addition, during the needle mold lifting process, the bottom surface of the FPC end cannot effectively leak the airflow formed by the pressing before the instantaneous contact, resulting in the accuracy of the docking being affected by the presence of hollowing, and also increasing the relative displacement rate of the FPC end and the needle mold after docking, further increasing the failure rate of the lighting test and other deficiencies. The present invention cleverly solves the various deficiencies of the existing structure by overall design of the wiring auxiliary structure of the screen FPC end. After adopting the wiring auxiliary structure of the FPC end of the screen, first, the screen with the FPC end is positioned on the positioning seat, and at the same time, the FPC end is placed on the extension bearing platform and extended outward; then, based on the drive of the first power member and the second power member, the lower pressure mold strip is moved downward and the extension section of the FPC end is adsorbed by negative pressure to perform a flattening operation so that the entire FPC end extended outward is in a flattened state; at the same time, the edges of the protruding lower pressure mold strip are relatively flapped by the alignment components on both sides with the center line of the bottom surface as the reference to perform alignment correction of the FPC end of the screen; finally, in the flattening and correction mode of the FPC end of the screen, the wiring platform and the needle mold aligned below move upward and press the bottom surface of the FPC end of the screen, and the matching surface is consistent with the interface of the FPC end of the screen, and at the same time At the same time, the interface and the needle mold are kept pressed and connected, and the airflow between the matching surface and the screen FPC end is discharged from the air release channel during the pressing process. Finally, the screen is powered on to perform a lighting test. Therefore, on the one hand, the present invention is based on the negative pressure adsorption force formed by the lower pressure mold bar, and combined with the up and down, front and back movements to flatten the FPC end. At the same time, the position of the flattened FPC end is calibrated based on the left and right alignment, and under the pressing of the matching surface and the screen FPC end, the interface and the needle mold are accurately docked, the docking misalignment rate is reduced, and the safety hazard is eliminated. On the other hand, the airflow formed by the bonding is discharged based on the air release channel to avoid the formation of bonding hollows, improve the stability of the docking between the interface and the needle mold, and reduce the displacement rate of the interface and the needle mold, thereby improving the accuracy of the screen lighting test. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the screen lighting detection device of the present invention; Figure 2 for Figure 1 The structural diagram of the screen lighting detection device from another perspective (partial structural decomposition); Figure 3 for Figure 2 A simplified schematic diagram of the structure of the screen lighting detection device; Figure 4 for Figure 3 A simplified schematic diagram of the structure of the screen lighting detection device; Figure 5 for Figure 4 Schematic diagram of the auxiliary wiring structure at the FPC end of the middle screen; Figure 6 for Figure 5 An enlarged schematic diagram of the structure of the wiring auxiliary structure at the FPC end of the middle screen; Figure 7 for Figure 6 Schematic diagram of structural decomposition; Figure 8 for Figure 7 Schematic diagram of the structure of the middle power unit; Fig. 9 for Figure 7 An enlarged schematic diagram of the structure of the middle wiring platform and the needle mold; Among them: ①, screen positioning seat; ②, wiring auxiliary structure; 4, extension bearing platform; 5, base; 50, seat body; 500, through hole; 51, frame; 6, wiring platform; 7, needle mold; 70, air release channel; 8, lower pressure module; 80, lower pressure mold strip; 800, negative pressure hole; 81, power device; 811, first power member; 812, second power member; 9, upper top module; 10, aligning assembly; 100, aligning power device; w, aligning end; ③, positioning auxiliary structure; 1, frame; 2, buckling assembly; 21, first pressure rod; 22, second pressure rod; 23, rubber sleeve or rubber head; 3, buckling power device; M, screen; j, FPC end. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] In the present application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0029] like Figures 1 to 9 As shown, the screen lighting detection device of this embodiment includes a screen positioning seat ①, a wiring auxiliary structure ② and a positioning auxiliary structure ③.

[0030] Specifically, the screen M is a vehicle-mounted screen and has four FPC terminals j. The shape of the screen positioning seat ① matches the vehicle-mounted screen. The four FPC terminals j are respectively connected to the corresponding wiring auxiliary structure ② from the screen positioning seat ① outward; the positioning auxiliary structure ② is pressed onto the surface of the vehicle-mounted screen by maintaining positive pressure.

[0031] In some specific embodiments, four wiring auxiliary structures ② are arranged on the side of the screen positioning seat ① based on the positions of the four FPC terminals j, and there are at least two groups of positioning auxiliary structures ③. Specifically, each positioning auxiliary structure ③ includes a frame 1, a clamping assembly 2 installed on the frame 1 and moving up and down in a direction perpendicular to the screen M, and a clamping power device 3, wherein the frame 1 is located on one side of the screen positioning seat ①, and the clamping assembly 2 includes a first pressure rod 21 extending from the frame 1 to the top of the screen M, a second pressure rod 22 extending vertically from the extended end of the first pressure rod 21 to the screen M, and a rubber sleeve or rubber head 23 installed at the end of the second pressure rod 22, that is, the screen M and the screen positioning seat ① are relatively pressed and positioned under the positive pressure of the rubber sleeve or rubber head 23, and the clamping power device 3 can use a conventional cylinder (or hydraulic cylinder or electric cylinder).

[0032] In this example, each wiring auxiliary structure ② includes an extended supporting platform 4, a base 5, a wiring platform 6, a needle mold 7, a lower pressing mold group 8, an upper lifting mold group 9, and an alignment component 10 formed on the screen positioning seat ①.

[0033] Specifically, the extension bearing platform 4 is used to flatten the connection part between the FPC terminal j and the screen M, and the extension section of the FPC terminal j needs to be aligned and connected with the needle mold 7. The base 5 is a conventional mounting seat or positioning seat, but in this example, the base 5 can be adjusted laterally relative to the extension bearing platform 4; based on the lateral adjustment, the alignment test requirements of the FPC terminals of different width screens can be met. The wiring platform 6 is installed on the base 5, and the needle mold 7 is installed at the front end of the wiring platform 6, and the needle mold 7 is docked with the wiring platform 6 to form a stepped matching surface. At the same time, the needle mold 7 is also provided with an air release channel 70. The pressing mold group 8 includes a pressing mold strip 80 and a power device 81. The bottom surface of the pressing mold strip 80 is flat, and is recessed inward from the bottom surface to form multiple groups of negative pressure holes 800. Each group of negative pressure holes 800 is connected to the negative pressure source based on a flow control valve and a pipeline, wherein the multiple groups of negative pressure holes 800 work in whole or in part to form negative pressure adsorption forces of different sizes, and are divided into a leveling mode and a pressing mode based on the size of the negative pressure adsorption force; at the same time, the width of the pressing mold strip 80 is less than or equal to the width of the extended part of the FPC end of the screen from the extended bearing platform, as long as the center line of the bottom surface of the pressing mold strip 80 is used as a reference, but considering the same product, it is easier to align the operation with equal width. If the width of the pressing mold strip 80 is small, it is also possible, and it is necessary to set the aligning stroke or align according to the width of the edge that emerges. The power device 81 includes a first power member 811 for driving the lower mold strip 80 to move in the up-down direction, and a second power member 812 for driving the lower mold strip 80 to move in the length direction of the screen FPC end. The upper mold assembly 9 is a lifting power rod, wherein the base 5 is lifted based on the up-down movement of the lifting power rod. The snap assembly 10 is located on the left and right sides of the lower mold strip 80, and snaps the edge of the lower mold strip 80 to snap the screen FPC end relative to the center line of the bottom surface of the lower mold strip 80.

[0034] Furthermore, multiple groups of negative pressure holes 800 are allocated based on the aperture size to form a first negative pressure group f1, a second negative pressure group f2, and a third negative pressure group f3. The first negative pressure group f1 forms a negative pressure of F1, the second negative pressure group f2 forms a negative pressure of F2, and the third negative pressure group f3 forms a negative pressure of F3, wherein F1<F3<F2. In the leveling mode, the combined force of F1 and F2 is adsorbed. Under the external force of the aligning component, the screen FPC changes the adsorption position of the first negative pressure group based on the third negative pressure group, and changes the positions of the first negative pressure group and the third negative pressure group under the drive of the second power member; in the pressing mode, the combined force of F2 and F3 is adsorbed to achieve parallel bonding between the bottom surface and the surface of the screen FPC end. That is to say, based on the continuous negative pressure formed by the third negative pressure group, it is avoided that the movement correction amplitude of the screen FPC end is too large during the alignment process, and the probability of the screen FPC end falling off during the alignment process is also reduced; in addition, when in a fixed position, it can also assist in positioning to maintain the flatness of the surface of the screen FPC end. In this example, the third negative pressure group f3 is located in the middle of the lower pressure mold strip 80, the second negative pressure group f2 is distributed at both ends of the lower pressure mold strip 80 based on the third negative pressure group f3, and the first negative pressure group f1 is distributed between the second negative pressure group f2 and the third negative pressure group f3 based on the third negative pressure group f3. Such a layout is mainly convenient for the flow control valve to control the size of the negative pressure of each branch. At the same time, the centers of the multiple groups of negative pressure holes 800 are aligned, and the center connection line formed coincides with the center line of the bottom surface or is symmetrically arranged about the center line. In short, multiple groups of negative pressure holes can have a row, and the center line of the row coincides with the center line of the bottom surface; or, multiple groups of negative pressure holes 800 are divided into multiple rows, and the center lines of the multiple rows are symmetrically arranged about the center line. Regardless of which implementation method is used, the final result can form the adsorption force required for flattening and correcting the FPC end of the screen; at the same time, such a layout is more conducive to maintaining relatively parallel adsorption between the FPC end of the screen and the lower pressure mold strip. The upper end of the first power member 811 is fixedly connected to the moving end of the second power member 812 through a bracket, and the lower pressure mold strip 80 is installed at the lower end of the first power member 811. The first power member 811 and the second power member 812 move synchronously or separately to adsorb and flatten the FPC end of the screen. Generally, the two power members move synchronously, so that the lower pressure mold strip can press down and move forward synchronously to quickly complete the flattening action.

[0035] Furthermore, in the leveling mode, the screen FPC end is adsorbed on the bottom surface of the lower mold strip 80, and based on the movement of the first power member 811, the second power member 812 and the snap assembly 10, the screen FPC end in the adsorption is displaced relative to the lower mold strip 80 to be flattened and corrected; in the pressing mode, the flattened screen FPC end is fixed to the bottom surface of the lower mold strip 80 from the top surface, the needle mold 7 is located below the screen FPC end, and the upper top mold group 9 drives the matching surface to fit the screen FPC end upward to connect the interface of the needle mold 7 with the screen FPC end, and the airflow between the matching surface and the screen FPC end during the fitting is discharged from the air release channel 70. Specifically, the air release channel 70 extends along the length direction of the lower mold strip 80 and there are multiple air release channels 70, wherein multiple air release channels 70 are distributed side by side on the needle mold 7. Based on multiple air releases, hollowing after pressing is avoided, and the flatness and stability of pressing are improved. The top front end of the wiring platform 6 forms the bottom surface of the air release channel. Such a layout is more conducive to the release of air flow during pressing. The air release channels 70 located on the opposite sides of the needle mold 7 are also connected to the outside from the outside to avoid poor air discharge at the edge.

[0036] In some specific embodiments, the base 5 includes a base body 50, two frames 51 installed on the base body 50 and located on opposite sides, and the snap assembly 10 includes snap drivers 100 respectively installed on the frames 51, and the snap terminals w of the two snap drivers 100 are arranged opposite to each other, and the screen FPC end protruding from the side of the lower mold strip 80 is snap-calibrated based on the snap terminals w being close to or away from the side of the lower mold strip 80, wherein after the calibration, the side of the screen FPC end extending from the extension bearing platform 4 and the side of the extension part is flush with the side of the lower mold strip 80; or the width of the screen FPC end extending from the extension bearing platform and the side of the extension part from both sides of the lower mold strip 80 is equal. Here, the calibration states of equal width and difference in width are further described to meet the actual processing needs and increase practicality. The wiring platform 6 is located between the two frames 51 and fixed on the seat body 50. The outer diameter of the aligning end of the aligning end w is reduced from the outer periphery to the inside to avoid the wiring platform 6, and the formed aligning part is columnar, wherein the outer end surface of the column and the side surface of the lower pressure mold strip are arranged in parallel.

[0037] Specifically, the alignment power device 100 is a power telescopic rod, and the power telescopic rod is driven by pneumatic, hydraulic or electric means. The present application adopts pneumatic. A through hole 500 extending up and down is formed at the bottom of the seat body 50, and the lifting power rod is inserted from the through hole 500 to lift the base 5 by moving up and down, that is, the relative pressing between the lower mold strip 80, the screen FPC end, the wiring platform 6, and the needle mold 7 is achieved based on the overall upward movement of the base 5. In addition, the base can be adjusted laterally relative to the extended bearing platform along the width direction of the lower mold strip. Based on the lateral adjustment, the alignment test requirements of the FPC ends of screens with different widths can be met.

[0038] In summary, the screen lighting detection process of this embodiment includes the following steps: S1. Screen positioning Position the screen M with the FPC end on the screen positioning seat ①, and at the same time, the FPC end is set on the extension bearing platform 4 and extends outward, and then the positioning auxiliary structure ③ is used to press the screen M on the screen positioning seat ① through the positive pressure perpendicular to the direction of the screen M; S2, FPC end alignment correction Based on the driving of the first power member 811 and the second power member 812, the lower pressing mold bar 80 is moved downward and the outer extension of the FPC end is adsorbed by negative pressure to perform a flattening operation so that the entire FPC end extending outward is in a flattened state; at the same time, the aligning components 10 on both sides relatively flap the edge of the lower pressing mold bar 80 based on the bottom center line to perform alignment correction of the screen FPC end; S3, docking and power on In the flattening and correction mode of the screen FPC end, the wiring platform 6 and the needle mold 7 aligned below move upward and press the bottom surface of the screen FPC end, and the matching surface matches the interface of the screen FPC end. At the same time, the interface and the needle mold 7 are kept pressed and connected, and the airflow between the matching surface and the screen FPC end is discharged from the air discharge channel 70 during the pressing process. Finally, the screen lighting test is carried out by power-on.

[0039] Therefore, after adopting the wiring auxiliary structure of the FPC end of the screen, first, the screen with the FPC end is positioned on the positioning seat, and at the same time, the FPC end is placed on the extension bearing platform and extended outward; then, based on the drive of the first power member and the second power member, the lower pressure mold bar is moved downward and the extension section of the FPC end is adsorbed by negative pressure to perform a flattening operation so that the entire FPC end extending outward is in a flattened state; at the same time, the edges of the lower pressure mold bar that emerge are relatively flapped by the aligning components on both sides with the bottom center line as the reference to perform alignment correction of the screen FPC end; finally, In the flattening and correction mode of the screen FPC end, the wiring platform and the needle mold aligned below move upward and press the bottom surface of the screen FPC end, and the matching surface matches the interface of the screen FPC end. At the same time, the interface and the needle mold are kept pressed and connected, and the airflow between the matching surface and the screen FPC end is discharged from the air discharge channel during the pressing process. Finally, the screen is powered on for lighting test. Therefore, on the one hand, the present invention is based on the negative pressure adsorption force formed by the lower pressing mold strip, and combines the up and down, front and back movements to flatten the FPC end, and at the same time flattens the FP based on the left and right alignment. The position of the C end is calibrated, and under the pressure of the matching surface and the screen FPC end, the interface and the pin mold are accurately docked, the docking misalignment rate is reduced, and the safety hazard is eliminated; on the other hand, the airflow formed by the bonding is discharged based on the air release channel to avoid the generation of bonding hollows, improve the stability of the interface and the pin mold docking, and reduce the displacement rate of the interface and the pin mold, thereby improving the accuracy of the screen lighting test; thirdly, based on the different adsorption forces in different modes, the required position adjustment and position fixation are met, so as to provide wiring assistance more accurately; especially based on the continuous negative pressure formed by the third negative pressure group, the excessive movement correction amplitude of the screen FPC end during the alignment process is avoided, and the probability of the screen FPC end falling off during the alignment process is also reduced; in addition, when the position is fixed, it can also assist in positioning to maintain the flatness of the surface of the screen FPC end, and such a layout is mainly convenient for the flow control valve to control the negative pressure of each branch. In addition, multiple groups of negative pressure holes can have one row, and the center line of the row coincides with the center line of the bottom surface; or, multiple groups of negative pressure holes are divided into multiple rows, and the center lines of the multiple rows are symmetrically arranged about the center line.Regardless of which implementation method is used, the final result can form the adsorption force required for flattening and correction of the FPC end of the screen; at the same time, such a layout is more conducive to maintaining relatively parallel adsorption between the FPC end of the screen and the lower pressure mold strip; in the fourth aspect, the two power parts move synchronously, so that the lower pressure mold strip is pressed down and moved forward synchronously to quickly complete the flattening action; in the fifth aspect, based on step matching, not only the accuracy of docking is improved, but also the displacement rate after docking is reduced; at the same time, based on multiple air releases, hollowing after pressing is avoided, and the flatness and stability of pressing are improved. In addition, the front end of the top face of the wiring platform constitutes the bottom surface of the air release channel. Such a layout is more conducive to the air flow release during pressing, and the air release channels on the opposite sides of the needle mold are also connected to the outside from the outside to avoid poor exhaust at the edge; in the sixth aspect, the width of the lower pressure mold strip is less than or equal to the width of the extended part of the screen FPC end from the extended bearing platform, as long as the bottom center line of the lower pressure mold strip is used as the reference, but considering the same product, it is more convenient to use equal width to align the operation. If the width of the lower pressure mold strip is small , it is also possible, it is necessary to set the snapping stroke or snapping according to the width of the edge that emerges, and after correction, the side of the extended part of the screen FPC end from the extended load-bearing platform is flush with the side of the lower pressure mold strip; or the width of the side of the extended part of the screen FPC end from the extended load-bearing platform and the lower pressure mold strip is equal. Here, the correction state of equal width and different width is further explained to meet the actual processing needs and increase practicality; the seventh aspect of the snapping end of the snapping end reduces the outer diameter from the outer circumference to the inside to avoid the wiring platform, And the formed alignment part is columnar, wherein the outer end face of the column and the side face of the lower pressure mold strip are arranged in parallel, and the alignment power device is a power telescopic rod, and the driving mode of the power telescopic rod is pneumatic, hydraulic or electric, and the present application adopts pneumatic; the eighth aspect is based on the overall upward movement of the base to achieve relative pressing between the lower pressure mold strip, the screen FPC end, the wiring platform, and the needle mold. In addition, the base can be laterally adjusted along the width direction of the lower pressure mold strip relative to the extended bearing platform. Therefore, based on the lateral adjustment, the alignment test requirements of the FPC ends of screens with different widths can be met.

[0040] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A wiring auxiliary structure for the FPC end of a screen, comprising an extension bearing platform, a base, a wiring platform, a needle mold, a lower pressing mold group, and an upper pressing mold group formed on a screen positioning seat, wherein the lower pressing mold group comprises a lower pressing mold strip and a power device, characterized in that: The bottom surface of the lower mold strip is flat, and is concave inward from the bottom surface to form multiple groups of negative pressure holes, each group of negative pressure holes is connected to the negative pressure source based on the flow control valve and the pipeline, wherein the multiple groups of negative pressure holes work in whole or in part to form negative pressure adsorption forces of different magnitudes, and are divided into a leveling mode and a pressing mode based on the magnitude of the negative pressure adsorption force; the power device includes a first power member driving the lower mold strip to move in the up and down direction, and a second power member driving the lower mold strip to move in the length direction of the FPC end of the screen; The needle mold is docked with the wiring platform to form a stepped matching surface, and an air release channel is also provided on the needle mold; the wiring auxiliary structure also includes a snapping component located on opposite sides of the wiring platform and flapping relative to the screen FPC end of the edge of the lower pressure mold strip with the bottom center line as the reference, wherein in the leveling mode, the screen FPC end is adsorbed on the bottom surface of the lower pressure mold strip, based on the movement of the first power member, the second power member and the snapping component, so that the screen FPC end in the adsorption is displaced relative to the lower pressure mold strip to be flattened and corrected; in the pressing mode, the flattened screen FPC end is fixed to the bottom surface of the lower pressure mold strip from the top surface, the needle mold is located below the screen FPC end, and the upper top module drives the matching surface to fit the screen FPC end upward to connect the interface of the needle mold and the screen FPC end, and the airflow between the matching surface and the screen FPC end during fitting is discharged from the air release channel.

2. The wiring auxiliary structure of the screen FPC end according to claim 1 is characterized in that: The multiple groups of negative pressure holes are allocated based on the hole size to form at least a first negative pressure group and a second negative pressure group, the negative pressure formed by the first negative pressure group is F1, and the negative pressure formed by the second negative pressure group is F2, wherein F1<F2, and the first negative pressure group and the second negative pressure group work independently to form the leveling mode or the pressing mode.

3. The wiring auxiliary structure of the screen FPC end according to claim 2 is characterized in that: A third negative pressure group is also formed based on the distribution of aperture sizes in multiple groups of negative pressure holes. The negative pressure formed by the third negative pressure group is F3, wherein F1<F3<F2. In the leveling mode, the combined forces of F1 and F2 are adsorbed. Under the external force of the aligning components, the screen FPC changes the adsorption position of the first negative pressure group based on the third negative pressure group, and changes the positions of the first negative pressure group and the third negative pressure group under the drive of the second power member; in the pressing mode, the combined forces of F2 and F3 are adsorbed to achieve parallel fitting between the bottom surface and the surface of the screen FPC end.

4. The wiring auxiliary structure of the screen FPC end according to claim 3 is characterized in that: The third negative pressure group is located in the middle of the lower pressure mold strip, the second negative pressure group is distributed at both ends of the lower pressure mold strip based on the third negative pressure group, and the first negative pressure group is distributed between the second and third negative pressure groups based on the third negative pressure group.

5. The wiring auxiliary structure of the screen FPC end according to claim 4 is characterized in that: The centers of the multiple groups of negative pressure holes are aligned, and the center line formed coincides with the center line of the bottom surface or is symmetrically arranged about the center line.

6. The wiring auxiliary structure of the screen FPC end according to claim 1 is characterized in that: The upper end of the first power member is fixedly connected to the moving end of the second power member through a bracket, and the lower pressure mold strip is installed on the lower end of the first power member. The first power member and the second power member move synchronously or separately to absorb and flatten the screen FPC end.

7. The wiring auxiliary structure of the screen FPC end according to claim 1 is characterized in that: The pin mold is fixedly mounted on the front end of the wiring platform, and the pin mold and the wiring platform form a step that matches the interface of the FPC end of the screen, wherein the step-shaped matching surface is formed between the wiring platform and the pin mold.

8. The wiring auxiliary structure of the screen FPC end according to claim 1 or 7, characterized in that: The air leakage channel extends along the length direction of the lower die strip and there are a plurality of the air leakage channels, wherein the plurality of the air leakage channels are distributed side by side on the needle die.

9. The wiring auxiliary structure of the screen FPC end according to claim 8, characterized in that: The top front end of the wiring platform forms the bottom surface of the air leakage channel.

10. The wiring auxiliary structure of the screen FPC end according to claim 9, characterized in that: The air leakage channels located on opposite sides of the needle mold are also communicated with the outside from the outside.

11. The wiring auxiliary structure of the screen FPC end according to claim 1, characterized in that: The width of the lower pressing mold strip is less than or equal to the width of the portion of the screen FPC end extending from the extension bearing platform.

12. The wiring auxiliary structure of the screen FPC end according to claim 1, characterized in that: The base includes a seat body and two frames installed on the seat body and located on opposite sides. The alignment component includes alignment drivers respectively installed on the frames. The alignment ends of the two alignment drivers are arranged opposite to each other, and the screen FPC end protruding from the side of the lower pressure mold strip is aligned and corrected based on the alignment end being in contact with or away from the side of the lower pressure mold strip. After the correction, the side of the extended part of the screen FPC end extending from the extended bearing platform is flush with the side of the lower pressure mold strip; or the width of the side of the extended part of the screen FPC end extending from the extended bearing platform on both sides of the lower pressure mold strip is equal.

13. The wiring auxiliary structure of the screen FPC end according to claim 12, characterized in that: The wiring platform is located between the two frames and fixed on the seat body, and the alignment end of the alignment end reduces its outer diameter from the outer periphery inward to avoid the wiring platform, and the formed alignment part is columnar, wherein the outer end surface of the column and the side surface of the lower pressure mold strip are arranged in parallel; and / or, the alignment power device is a power telescopic rod, and the driving method of the power telescopic rod is pneumatic, hydraulic or electric.

14. The wiring auxiliary structure of the screen FPC end according to claim 13, characterized in that: A through hole extending up and down is formed at the bottom of the seat body, and the upper jacking module is a lifting power rod penetrating from the through hole, wherein the base is lifted based on the up and down movement of the lifting power rod.

15. The wiring auxiliary structure of the screen FPC end according to claim 1, characterized in that: The base can be adjusted transversely relative to the extension bearing platform along the width direction of the lower pressing mold strip.

16. A screen lighting detection process, characterized in that: It adopts the wiring auxiliary structure of the screen FPC end according to any one of claims 1 to 15, and includes the following steps: S1. Screen positioning Position the screen with the FPC end on the screen positioning seat, and at the same time, the FPC end is placed on the extension bearing platform and extends outward; S2, FPC end alignment correction Based on the driving of the first power member and the second power member, the lower pressure mold bar is moved downward and the outer extension of the FPC end is adsorbed by negative pressure to perform a flattening operation so that the entire FPC end extending outward is in a flattened state; at the same time, the aligning components on both sides relatively flap the edge of the lower pressure mold bar with the bottom center line as the reference to perform alignment correction of the screen FPC end; S3, docking and power on In the flattening and correction mode of the screen FPC end, the wiring platform and needle mold aligned from the bottom move upward and press the bottom surface of the screen FPC end, and the matching surface matches the interface of the screen FPC end. At the same time, the interface and the needle mold keep pressing and connecting, and the airflow between the matching surface and the screen FPC end is discharged from the air discharge channel during the pressing process. Finally, the power is turned on to perform the screen lighting test.

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