Vehicle-mounted flexible OLED curved screen assembly positioning tool and control method thereof

Abstract

The present application relates to the technical field of screen assembly, in particular to a kind of vehicle-mounted flexible OLED curved screen assembly positioning tool and control method thereof, comprising: first positioning jig and the second positioning jig capable of moving relative to first positioning jig, flexible OLED panel positioning is set on the first positioning jig, curved cover plate positioning is set on the second positioning jig;Centerline groove, set in the middle position of first positioning jig, the length direction of centerline groove is perpendicular to the length direction of first positioning jig;In the initial stage, when roller lifts flexible OLED panel center axis position, the center axis position of flexible OLED panel is relatively locked with roller by locking adhesive strip, positioning is realized, and assembly bonding precision is improved.

Description

Technical Field

[0001] This invention relates to the field of screen assembly technology, specifically to an assembly and positioning fixture for a vehicle-mounted flexible OLED curved screen and its control method. Background Technology

[0002] The assembly and bonding of flexible OLED curved screens generally falls into two main categories based on the tooling: roller bonding and full-area surface pressing. Full-area surface pressing involves inflating a silicone airbag downwards, applying uniform normal pressure across the entire curved surface to complete the assembly. This method is typically used for bonding small screens such as those in mobile phones. However, some automotive flexible OLED curved screens feature a large, continuous curved design, extending from the driver's side to the passenger side at a certain arc. Currently, most companies use roller bonding for these large-area, continuous curved automotive screens. This involves using rollers to lift and first align the central axis of the flexible OLED panel with the central axis of the curved cover plate. Then, the rollers are controlled to move to both sides along the curvature of the cover plate to complete the assembly. Because the bonding process unfolds gradually along a line, the rolling process simultaneously expels air from the interlayer, reducing air bubble problems when assembling and bonding large screens.

[0003] However, there is a problem with insufficient positioning accuracy, which is mainly concentrated in the initial stage. The roller lifts the central position of the flexible OLED panel. If the friction between the flexible OLED panel and the first positioning fixture is greater on one side than on the other side, the flexible OLED panel will shift, resulting in a decrease in positioning accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide an assembly and positioning fixture and its control method for a vehicle-mounted flexible OLED curved screen, so as to solve the problem of decreased assembly and bonding accuracy caused by the initial stage of flexible OLED panel misalignment mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vehicle-mounted flexible OLED curved screen assembly and positioning fixture for assembling and bonding a flexible OLED panel and a curved cover plate, comprising: a first positioning fixture and a second positioning fixture movable relative to the first positioning fixture, wherein the flexible OLED panel is positioned on the first positioning fixture and the curved cover plate is positioned on the second positioning fixture; a centerline groove is formed in the middle of the first positioning fixture, the length direction of the centerline groove being perpendicular to the length direction of the first positioning fixture; and two semi-circular positioning rollers are symmetrically arranged, with a semi-circular cross-section, the two semi-circular positioning rollers forming a cylinder when closed together. The system includes an inner lifting strip positioned between two sets of semi-circular positioning rollers; a locking adhesive strip is provided on the inner lifting strip, and a receiving groove is provided on the semi-circular positioning rollers; it also includes an end control module and a servo movement module. The end control module is symmetrically positioned at both ends of the semi-circular positioning rollers, and an end shaft is fixedly mounted on the end control module. The end control module is used to control the closing or separating action of the semi-circular positioning rollers and the lifting action of the inner lifting strip relative to the semi-circular positioning rollers. When the end control module controls the semi-circular positioning rollers to close and form a cylinder, the formed cylinder corresponds coaxially with the end shaft; the servo movement module is used to control the lifting action of the end shaft, the movement along the arc of the curved cover plate, and the rotation action of the end shaft.

[0006] The terminal control module includes: The lifting platform is fixedly installed at the end of the inner lifting bar; the combined sleeve is fixedly installed with the end shaft, and a vertical shaft is fixedly installed on the combined sleeve, with the vertical shaft passing through the lifting platform; the spring is sleeved on the outside of the vertical shaft and provides elastic support for the lifting platform; the electromagnetic unit is fixedly installed on the combined sleeve and can generate magnetic force to attract and drive the lifting platform when energized.

[0007] The combined sleeve has a C-shaped groove; the end of the semi-circular positioning roller is fixedly provided with an L-shaped connecting arm, and a slider is fixedly provided on the L-shaped connecting arm. The slider is slidably installed in the C-shaped groove; a lead screw is inserted in the slider, and the lead screw has symmetrically arranged threads. When the lead screw rotates, it can drive the slider to move the semi-circular positioning roller to close or separate synchronously through the symmetrical threads and the slider.

[0008] The lead screw shaft is provided with a worm gear in the middle, and a positioning sleeve is fixedly provided on the combined sleeve body to limit the lead screw shaft; a worm is meshed with the worm gear, and a motor unit is connected to one end of the worm. The motor unit drives the lead screw shaft to rotate through the cooperation of the worm and the worm gear.

[0009] The locking strip has a collapsed air chamber inside, and several groups of collapsed air chambers are arranged in a linear array along the length of the locking strip. The inner lifting strip has a transverse column cavity inside, which is parallel to the length of the locking strip. A branch air channel is provided between the collapsed air chamber and the transverse column cavity, and the branch air channel corresponds to the collapsed air chamber one by one. The collapsed air chamber is connected to the transverse column cavity through the branch air channel.

[0010] The transverse column cavity is equipped with a control slide shaft, which is in sealed contact with the transverse column cavity. One end of the transverse column cavity is connected to a negative pressure suction pipe. Negative pressure is applied through the negative pressure suction pipe, and in conjunction with the axial movement of the control slide shaft, the interior of the collapsed air chamber collapses under negative pressure in sequence.

[0011] The two ends of the control slide shaft are connected to traction wires. A back plate is fixedly installed on the lifting platform. A traction unit is installed on the back plate. The traction unit pulls the traction wires to drive the control slide shaft to move axially.

[0012] The interior of the transverse column cavity is also equipped with a sealing section. The connection between the negative pressure suction tube and the transverse column cavity is located between the sealing section and the control slide shaft. The traction wire passes through the sealing section and is in sealed contact with the sealing section.

[0013] A negative pressure unit is also installed on the back plate. The negative pressure unit is connected to the negative pressure suction pipe, which enables the negative pressure suction pipe to apply negative pressure to the inside of the transverse column cavity.

[0014] A control method for an assembly and positioning fixture for a vehicle-mounted flexible OLED curved screen, comprising the following steps: S1, Position and adsorb the curved cover plate onto the second positioning fixture, and position and place the flexible OLED panel onto the first positioning fixture; S2, the servo moving module controls the end shaft to move upward, so that the locking adhesive strip contacts and adheres to the flexible OLED panel; the end shaft drives the semi-circular positioning roller and the locking adhesive strip to move upward continuously until the central axis position of the flexible OLED panel is in contact with the central axis position of the curved cover plate, and the end shaft does not rotate during the process; S3, the end control module controls the inner lifting strip and the locking adhesive strip to move down relative to the semi-circular positioning roller. When the inner lifting strip and the locking adhesive strip move to the receiving groove, the end control module controls the semi-circular positioning roller to close together to form a cylinder. S4, the servo moving module controls the cylinder formed by the mutual closing of the semi-circular positioning rollers through the end shaft to move along the arc of the curved cover plate to complete the bonding.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention provides an assembly and positioning fixture for a vehicle-mounted flexible OLED curved screen. Through the coordinated use of a semi-circular positioning roller, a locking adhesive strip, and an end control module, the fixture enables positioning during the initial stage when the rollers lift the flexible OLED panel at its central axis. The locking adhesive strip then locks the rollers relative to the central axis of the flexible OLED panel, preventing slippage and offset issues caused by uneven friction distribution on both sides of the flexible OLED panel during lifting. After the flexible OLED panel is bonded to the central axis of the curved cover plate, the semi-circular positioning roller automatically reverts to a cylindrical roller structure, completing the roll pressing assembly on both sides. During this reversion process, the semi-circular positioning roller maintains constant pressure and fixation with the flexible OLED panel. The present invention reduces initial flexible OLED panel offset through the locking positioning of the locking adhesive strip, thereby improving assembly and bonding accuracy.

[0016] 2. The end control module of this invention can control the lifting and lowering of the inner lifting bar relative to the semi-circular positioning roller, and can also control the semi-circular positioning roller to close or separate. It can also achieve integrated action control of multiple functions by rotating the end shaft relative to the outside.

[0017] 3. The present invention, through the combination of a collapsed air chamber, a control sliding shaft, and a negative pressure suction tube, enables the locking adhesive strip to gradually collapse and move downward from one end to the other when separating from the flexible OLED panel, thus gradually tearing it apart and avoiding the entire locking adhesive strip from the flexible OLED panel directly, thereby reducing the impact during separation and tearing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0020] Figure 3 This is a top view of the internal structure of the present invention.

[0021] Figure 4 for Figure 3 Cross-sectional view at point AA.

[0022] Figure 5 for Figure 4 Enlarged schematic diagram of region A in the middle.

[0023] Figure 6 This is a schematic diagram of the state switching of the semi-circular positioning roller of the present invention.

[0024] Figure 7 This is a three-dimensional half-sectional view of the present invention.

[0025] Figure 8 This is a partial three-dimensional half-section view of the present invention.

[0026] Figure 9 for Figure 7 Enlarged schematic diagram of region B in the middle.

[0027] Figure 10 This is a schematic diagram of the end control module and semi-circular positioning roller structure of the present invention.

[0028] Figure 11 This is a top view of the end control module and semi-circular positioning roller structure of the present invention.

[0029] Figure 12 This is an exploded view of the end control module of the present invention.

[0030] In the diagram: 1. Device cabinet; 2. First positioning fixture; 3. Second positioning fixture; 4. Centerline groove; 5. Semi-circular positioning roller; 6. Inner lifting strip; 7. Locking adhesive strip; 8. Receiving groove; 9. End shaft; 901. Lifting platform; 902. Combined sleeve; 903. Vertical shaft; 904. Spring component; 905. Electromagnetic unit; 906. C-shaped slide; 907. Sliding block; 908. L-shaped connecting arm; 909. Lead screw shaft; 910. Worm gear; 911. Positioning sleeve; 912. Symmetrical thread; 913. Worm; 914. Motor unit; 701. Collapse Air trap chamber; 601, transverse column cavity; 602, air distribution channel; 603, control slide shaft; 604, negative pressure extraction pipe; 605, traction wire; 606, back plate; 607, traction unit; 608, sealing joint; 609, negative pressure unit; 201, track base; 202, lifting control unit; 203, lifting frame; 204, vertical shaft; 205, right-angle stabilizing plate; 206, cantilever platform; 207, carbon brush contact; 208, electric ring; 301, cylinder unit; 302, positioning convexity; 501, flexible bushing; a, flexible OLED panel; b, curved cover plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1 to 12 : Example 1: A positioning fixture for assembling a flexible OLED curved screen for automotive applications is used to more precisely position, assemble, and bond a flexible OLED panel a and a curved cover plate b. The flexible OLED panel a is a flexible sheet with a thickness of 0.4mm-0.5mm, and precise positioning of the flexible OLED panel a is required during assembly and bonding with the curved cover plate b. Specifically, the positioning fixture of this invention consists of a first positioning fixture 2, a second positioning fixture 3, a centerline groove 4, a semi-circular positioning roller 5, an inner lifting strip 6, an end control module, and a servo movement module, etc. Figure 1 As shown, the first positioning fixture 2 and the second positioning fixture 3 of the present invention are all installed inside the device cabinet 1. The device cabinet 1 is an electrical cabinet or other control equipment in the prior art.

[0033] The second positioning fixture 3 is movable relative to the first positioning fixture 2. The flexible OLED panel a is positioned on the first positioning fixture 2, and the curved cover plate b is positioned on the second positioning fixture 3. Please refer to [link to relevant documentation]. Figure 4 The second positioning fixture 3 is raised and lowered by cylinder units 301 symmetrically arranged at both ends. A positioning protrusion 302 is also fixedly provided on the surface of the second positioning fixture 3. The positioning protrusion 302 positions the curved cover plate b set on the second positioning fixture 3. It is worth noting that the protrusion height of the positioning protrusion 302 should be less than the thickness of the curved cover plate b to avoid the positioning protrusion 302 affecting the fitting action.

[0034] The second positioning fixture 3 of this invention uses holes on its surface and negative pressure to adsorb the curved cover plate b. The second positioning fixture 3 can also use an adhesive substance on its surface to adhere and adsorb the curved cover plate b; the adhesive substance can be gel, double-sided tape, etc.

[0035] The center groove 4 is located in the middle of the first positioning fixture 2, and the length direction of the center groove 4 is perpendicular to the length direction of the first positioning fixture 2.

[0036] Two semi-circular positioning rollers 5 are symmetrically arranged, and their cross-sections are semi-circular. When the two semi-circular positioning rollers 5 are closed together, they form a cylinder. Please refer to [link / reference needed]. Figure 5 and Figure 6 As shown, a flexible bushing 501 is fixedly disposed on the outside of the semicircular positioning roller 5. The semicircular positioning roller 5 of this invention is made of metal, such as 304 stainless steel, while the flexible bushing 501 is made of rubber and is flexible. The cross-section of the flexible bushing 501 is semi-annular. When the semicircular positioning roller 5 is closed to form a cylinder, the flexible bushing 501 is seamlessly connected and wraps around the outside of the semicircular positioning roller 5.

[0037] The inner lifting strip 6 is positioned between two sets of semi-circular positioning rollers 5; a locking adhesive strip 7 is provided on the inner lifting strip 6. The locking adhesive strip 7 is made of rubber and is elastic. At the same time, a reusable gel is provided on the upper surface of the locking adhesive strip 7. The gel contacts the flexible OLED panel a to achieve bonding and fixation. A receiving groove 8 is provided on the semi-circular positioning roller 5. When the inner lifting strip 6 and the locking adhesive strip 7 move down, they are received by the receiving groove 8.

[0038] The end control module is symmetrically arranged at both ends of the semi-circular positioning roller 5. An end shaft 9 is fixedly installed on the end control module. The end control module is used to control the closing or separating action of the semi-circular positioning roller 5 and the lifting action of the inner lifting bar 6 relative to the semi-circular positioning roller 5. When the end control module controls the semi-circular positioning roller 5 to close and form a cylinder, the formed cylinder is coaxial with the end shaft 9.

[0039] The servo motion module is used to control the lifting and lowering of the end shaft 9, its movement along the arc of the curved cover plate, and its rotation. The servo motion module in this invention is a servo positioning system in the prior art; please refer to [link / reference needed]. Figure 2 As shown, the system specifically includes a track base 201 and a lifting control unit 202 mounted on the track base 201. The lifting control unit 202 is driven by a lead screw structure and can move precisely along the length of the track base 201. A lifting frame 203 is also mounted on the lifting control unit 202, which can control the precise lifting and lowering movement of the lifting frame 203. Figure 2 As shown, the support frame 203 is sleeved on the outside of the end shaft 9 to support the end shaft 9. The servo motion module of the present invention also includes a servo motor mounted on the support frame 203, which is directly connected to the end shaft 9 to control the rotation or non-rotation of the end shaft 9. The servo motor is omitted in the accompanying drawings of the present invention.

[0040] Please see Figure 7 As shown, a right-angle stabilizing plate 205 is fixedly installed on the outside of the lifting control unit 202 by screws, and a vertical shaft 204 is welded and fixed on the outside of the lift frame 203. The vertical shaft 204 passes through the right-angle stabilizing plate 205 to achieve a limit, thereby improving the stability of the lift frame 203 relative to the lifting control unit 202.

[0041] The end control module includes: a lifting platform 901, a combined sleeve 902, a spring element 904, and an electromagnetic unit 905. The lifting platform 901 is fixedly mounted at the end of the inner lifting bar 6; the combined sleeve 902 is fixedly installed with the end shaft 9, and a vertical shaft 903 is fixedly mounted on the combined sleeve 902, with the vertical shaft 903 passing through the lifting platform 901; the spring element 904 is sleeved on the outside of the vertical shaft 903 and provides elastic support for the lifting platform 901; the electromagnetic unit 905 is fixedly mounted on the combined sleeve 902 and, when energized, generates magnetic force to attract and drive the lifting platform 901.

[0042] A C-shaped groove 906 is provided on the combined sleeve 902; An L-shaped connecting arm 908 is fixedly provided at the end of the semi-circular positioning roller 5. A slider part 907 is fixedly provided on the L-shaped connecting arm 908. The slider part 907 is slidably installed in the C-shaped groove 906. A lead screw shaft 909 is inserted in the slider part 907. The lead screw shaft 909 has symmetrically arranged threads 912. When the lead screw shaft 909 rotates, it can drive the slider part 907 to drive the semi-circular positioning roller 5 to move synchronously to close or separate through the symmetrical threads 912 and the slider part 907.

[0043] A worm gear 910 is provided in the middle of the lead screw shaft 909, and a positioning sleeve 911 is fixedly provided on the combined sleeve 902 to limit the lead screw shaft 909. The worm gear 910 is externally meshed with a worm 913. One end of the worm 913 is connected to a motor unit 914. The motor unit 914 drives the lead screw shaft 909 to rotate through the cooperation of the worm 913 and the worm gear 910.

[0044] Example 2: Based on Embodiment 1, a collapse air chamber 701 is further provided inside the locking adhesive strip 7. Several groups of collapse air chambers 701 are provided and are linearly arrayed along the length direction of the locking adhesive strip 7. A horizontal column cavity 601 is provided inside the inner lifting strip 6. The horizontal column cavity 601 is parallel to the length direction of the locking adhesive strip 7. A branch air channel 602 is provided between the collapse air chamber 701 and the horizontal column cavity 601. The branch air channel 602 corresponds one-to-one with the collapse air chamber 701. The collapse air chamber 701 is connected to the horizontal column cavity 601 through the branch air channel 602.

[0045] The transverse column cavity 601 is provided with a control slide shaft 603. The control slide shaft 603 and the transverse column cavity 601 are in sealed contact. One end of the transverse column cavity 601 is connected to a negative pressure extraction pipe 604. Negative pressure is applied through the negative pressure extraction pipe 604. With the axial movement of the control slide shaft 603, the interior of the collapse air chamber 701 collapses under negative pressure in sequence.

[0046] The two ends of the control slide shaft 603 are connected to traction wires 605, which are made of steel wire. A back plate 606 is fixedly installed on the lifting platform 901, and a traction unit 607 is installed on the back plate 606. The traction unit 607 pulls the traction wires 605 to drive the control slide shaft 603 to move axially. The traction unit 607 consists of a take-up reel and a drive motor, which will not be described in detail in this invention.

[0047] The interior of the transverse column cavity 601 is also provided with a sealing section 608. The connection between the negative pressure suction pipe 604 and the transverse column cavity 601 is located between the sealing section 608 and the control slide shaft 603. The traction wire 605 passes through the sealing section 608 and is in sealed contact with the sealing section 608.

[0048] A negative pressure unit 609 is also installed on the back plate 606. The negative pressure unit 609 is connected to the negative pressure suction pipe 604. The negative pressure unit 609 enables the negative pressure suction pipe 604 to apply negative pressure to the inside of the transverse column cavity 601. The negative pressure unit 609 can be a negative pressure suction pump, or it can be a syringe-type suction structure composed of a piston, a piston cylinder, and a linear drive module. The piston is driven to move axially in the piston cylinder by the linear drive module to generate negative pressure.

[0049] Please see Figure 8 In this invention, a cantilever platform 206 is welded to the outside of the lifting frame 203, and a carbon brush contact 207 is installed on the cantilever platform 206. An electric ring 208 is embedded in the outside of the end shaft 9, and the carbon brush contact 207 is in conductive contact with the electric ring 208, so that the end shaft 9 can always establish a conductive connection with the outside during rotation. The traction unit 607, the negative pressure unit 609, and the motor unit 914 are all connected to the outside circuit through the electric ring 208 and the carbon brush contact 207.

[0050] A control method for an assembly and positioning fixture for a vehicle-mounted flexible OLED curved screen, comprising the following steps: S1, Position and adsorb the curved cover plate b onto the second positioning fixture 3, and position and place the flexible OLED panel a onto the first positioning fixture 2; S2, the servo moving module controls the end shaft 9 to move upward, so that the locking adhesive strip 7 contacts and adheres to the flexible OLED panel; the end shaft 9 drives the semi-circular positioning roller 5 and the locking adhesive strip 7 to move upward continuously until the central axis position of the flexible OLED panel a is in contact with the central axis position of the curved cover plate b, and the end shaft 9 does not rotate during the process. S3, the end control module controls the inner lifting strip 6 and the locking adhesive strip 7 to move down relative to the semi-circular positioning roller 5. When the inner lifting strip 6 and the locking adhesive strip 7 move to the receiving groove 8, the end control module controls the semi-circular positioning roller 5 to close together to form a cylinder. S4, the servo moving module controls the cylinder formed by the mutual closing of the semi-circular positioning rollers 5 through the end shaft 9 to move along the arc of the curved cover plate b to complete the bonding.

[0051] This invention is used to bond a flexible OLED panel a and a curved cover plate b. First, the second positioning fixture 3 is separated from the first positioning fixture 2 by a large distance. Then, the curved cover plate b is positioned on the second positioning fixture 3, and the flexible OLED panel a is positioned on the first positioning fixture 2. This step can be completed by a robotic arm in the upstream production line.

[0052] Subsequently, the second positioning fixture 3 is moved downwards, so that the distance between the curved cover plate b and the flexible OLED panel a is 3-10mm. When the distance between the curved cover plate b and the flexible OLED panel a is too close, for example, less than 3mm, there is a risk of electrostatic attraction, which can easily lead to bonding failure. When the distance between the curved cover plate b and the flexible OLED panel a is too far, greater than 10mm, it will cause the lifting distance of the locking adhesive strip 7 and the semi-circular positioning roller 5 to be too long, increasing the bonding error.

[0053] Please see Figure 5 In the initial stage, such as Figure 5 As shown, the semi-circular positioning roller 5 is in a separated state, and the upper surface of the locking adhesive strip 7 is flush with or protrudes 0-0.5mm beyond the highest point of the semi-circular positioning roller 5. This allows the highest point of the semi-circular positioning roller 5 to contact the lower surface of the flexible OLED panel a when the locking adhesive strip 7 contacts the flexible OLED panel a with a certain pressure. In this embodiment of the invention, the description of the highest point of the semi-circular positioning roller 5 is that the flexible bushing 501 and the semi-circular positioning roller 5 are considered as an integral structure, and the highest point of the semi-circular positioning roller 5 is the highest position of the flexible bushing 501.

[0054] The lifting control unit 202 controls the lifting frame 203 to move upward, and the end shaft 9 causes the entire semi-circular positioning roller 5, inner lifting strip 6, and locking adhesive strip 7 to move upward synchronously. When the locking adhesive strip 7 moves upward, it will first contact the central axis position of the flexible OLED panel a. The locking adhesive strip 7 of this invention is adhesive. When it contacts the central axis position of the flexible OLED panel a, it will stick and lock, thereby avoiding the problem of the flexible OLED panel a shifting relative to the locking adhesive strip 7 when the central axis position of the flexible OLED panel a is lifted in the initial stage. During this process, the end shaft 9 is controlled by a servo motor to prevent the end shaft 9 from rotating, that is, to lock the end shaft 9.

[0055] Until the central axis of the flexible OLED panel a arches upwards and aligns with the central axis of the curved cover plate b. For example... Figure 6As shown in the diagram, the inner lifting strip 6 and the locking adhesive strip 7 are controlled to move downward relative to the semi-circular positioning roller 5 by the end control module, and then the two sets of semi-circular positioning rollers 5 are controlled to close together to form a cylinder. The process is as follows: Figure 6 As shown in the image, the shape changes from the left side to the right side. When the locking strip 7 moves downward relative to the semi-circular positioning roller 5, the highest point of the upper part of the two semi-circular positioning rollers 5 will always be pressed against the lower surface of the flexible OLED panel a, maintaining the relative stability of the flexible OLED panel a and the curved cover plate b.

[0056] After the two sets of semicircular positioning rollers 5 come together to form a cylinder, the track base 201 controls the lifting control unit 202 to move, and at the same time, the lifting control unit 202 controls the lifting frame 203 to move up and down, so that the movement trajectory of the semicircular positioning rollers 5 corresponds to the curvature of the curved cover plate b. The semicircular positioning rollers 5 roll on both sides respectively, and after completing the bonding, they return to the middle position and move down to reset. In the above process, the rotation control of the end shaft 9 by the servo motor can make the end shaft 9 actively rotate according to the rolling requirements of the semicircular positioning rollers 5, or it can be in a free rotation state. The semicircular positioning rollers 5 passively drive the end shaft 9 to rotate through the friction between them and the flexible OLED panel a. The servo motor needs to control the locking adhesive strip 7 to rotate upwards to reset when the bonding is completed and the semicircular positioning rollers 5 return to the middle position.

[0057] The control process of the end control module for the semi-circular positioning roller 5 and the inner lifting bar 6 is as follows: See Figure 8 and Figure 12 As shown, after the electromagnetic unit 905 is energized, the lifting platform 901 is magnetically attracted, so that the lifting platform 901 moves downward against the elastic force of the spring member 904. After the electromagnetic unit 905 is de-energized, the lifting platform 901 moves upward to reset, so as to drive the inner lifting strip 6 and the locking adhesive strip 7 to rise and fall relative to the semi-circular positioning roller 5.

[0058] The motor unit 914 drives the worm gear 913 to rotate, which causes the lead screw shaft 909 to control the sliders 907 on both sides to move closer or further apart, so that the semi-circular positioning roller 5 can achieve the closing or separating action.

[0059] In this invention, a collapsed air chamber 701 is provided to reduce the impact during the separation of the locking adhesive strip 7 and the flexible OLED panel a, as detailed below: When the locking strip 7 needs to be moved down to separate from the flexible OLED panel a, the electromagnetic unit 905 is first energized. By controlling the voltage, the magnetic attraction force generated by the electromagnetic unit 905 on the lifting platform 901 is greater than the elastic support force provided by the spring 904, but not enough to directly tear the locking strip 7 and the flexible OLED panel a apart.

[0060] Negative pressure is then generated by the negative pressure unit 609 and introduced into the transverse column cavity 601 through the negative pressure extraction tube 604. (See reference) Figure 8 As shown, the traction units 607 at both sides cooperate to cause the traction wire 605 to traction control the sliding shaft 603 to move to the right, so as to... Figure 8 Taking the perspective of the screen as an example, during the process of controlling the sliding shaft 603 to move to the right, the collapsing air chamber 701 will be connected to negative pressure from left to right. Under the action of negative pressure, the collapsing air chamber 701 collapses downward, causing the locking adhesive strip 7 to collapse downward from left to right. As the locking adhesive strip 7 moves downward from left to right, it is gradually torn apart from the flexible OLED panel a from one end to the other. When the locking adhesive strip 7 is torn apart from the flexible OLED panel a to a certain extent, the downward movement is completely completed under the magnetic attraction of the electromagnetic unit 905. The above structure can significantly reduce the impact during separation and tearing, and further optimize the screen assembly and bonding effect.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vehicle-mounted flexible OLED curved screen assembly and positioning fixture, used for assembling and bonding a flexible OLED panel and a curved cover plate, characterized in that, include: A first positioning fixture and a second positioning fixture that can move relative to the first positioning fixture, wherein the flexible OLED panel is positioned on the first positioning fixture and the curved cover plate is positioned on the second positioning fixture; A centerline groove is formed in the middle of the first positioning fixture, and the length direction of the centerline groove is perpendicular to the length direction of the first positioning fixture. There are two semi-circular positioning rollers arranged symmetrically, and their cross-sections are semi-circular. When the two semi-circular positioning rollers are put together, they form a cylinder. An inner lifting bar is positioned between two sets of semi-circular positioning rollers; a locking adhesive strip is provided on the inner lifting bar, and a receiving groove is provided on the semi-circular positioning rollers; It also includes an end control module and a servo movement module. The end control module is symmetrically arranged at both ends of the semi-circular positioning roller. An end shaft is fixedly installed on the end control module. The end control module is used to control the closing or separating action of the semi-circular positioning roller and the lifting action of the inner lifting bar relative to the semi-circular positioning roller. When the end control module controls the semi-circular positioning roller to close and form a cylinder, the formed cylinder is coaxial with the end shaft. The servo motion module is used to control the lifting and lowering of the end shaft, its movement along the curvature of the curved cover plate, and its rotation.

2. The vehicle-mounted flexible OLED curved screen assembly and positioning fixture according to claim 1, characterized in that, The terminal control module includes: The lifting platform is fixedly installed at the end of the inner lifting bar; The combined sleeve is fixedly installed with the end shaft, and a vertical shaft is fixedly installed on the combined sleeve. The vertical shaft is limited and passes through the lifting platform. Spring components are sleeved on the outside of the vertical shaft and provide elastic support for the lifting platform; The electromagnetic unit is fixedly installed on the combined sleeve. When energized, it can generate magnetic force to attract and drive the lifting platform.

3. The vehicle-mounted flexible OLED curved screen assembly and positioning fixture according to claim 2, characterized in that: The combined sleeve body has a C-shaped sliding groove; An L-shaped connecting arm is fixedly provided at the end of the semi-circular positioning roller, and a slider part is fixedly provided on the L-shaped connecting arm. The slider part is slidably installed in the C-shaped groove. A lead screw is inserted into the slider section, and symmetrical threads are provided on the lead screw. When the lead screw rotates, it can drive the slider section to move the semi-circular positioning roller to close or separate synchronously through the symmetrical threads and the slider section.

4. The vehicle-mounted flexible OLED curved screen assembly and positioning fixture according to claim 3, characterized in that: The lead screw shaft is provided with a worm gear in the middle, and a positioning sleeve is fixedly provided on the combined sleeve body to limit the position of the lead screw shaft. The worm gear is externally meshed with a worm, and one end of the worm is connected to a motor unit. The motor unit drives the lead screw shaft to rotate through the cooperation of the worm and the worm gear.

5. The vehicle-mounted flexible OLED curved screen assembly and positioning fixture according to claim 2, characterized in that: The locking adhesive strip has a collapsed air chamber inside, and several groups of collapsed air chambers are arranged in a linear array along the length of the locking adhesive strip; The inner lifting strip has a horizontal column cavity inside, which is parallel to the length direction of the locking adhesive strip. A branch air channel is provided between the collapse air chamber and the horizontal column cavity. The branch air channel corresponds to the collapse air chamber one by one, and the collapse air chamber is connected to the horizontal column cavity through the branch air channel.

6. The vehicle-mounted flexible OLED curved screen assembly and positioning fixture according to claim 5, characterized in that: The transverse column cavity is equipped with a control slide shaft, which is in sealed contact with the transverse column cavity. One end of the transverse column cavity is connected to a negative pressure suction pipe. Negative pressure is applied through the negative pressure suction pipe, and in conjunction with the axial movement of the control slide shaft, the interior of the collapsed air chamber collapses under negative pressure in sequence.

7. The vehicle-mounted flexible OLED curved screen assembly and positioning fixture according to claim 6, characterized in that: The two ends of the control slide shaft are connected to traction wires. A back plate is fixedly installed on the lifting platform. A traction unit is installed on the back plate. The traction unit pulls the traction wires to drive the control slide shaft to move axially.

8. The vehicle-mounted flexible OLED curved screen assembly and positioning fixture according to claim 7, characterized in that: The interior of the transverse column cavity is also equipped with a sealing section. The connection between the negative pressure suction tube and the transverse column cavity is located between the sealing section and the control slide shaft. The traction wire passes through the sealing section and is in sealed contact with the sealing section.

9. The vehicle-mounted flexible OLED curved screen assembly and positioning fixture according to claim 7, characterized in that: A negative pressure unit is also installed on the back plate. The negative pressure unit is connected to the negative pressure suction pipe, which enables the negative pressure suction pipe to apply negative pressure to the inside of the transverse column cavity.

10. A control method for an assembly and positioning fixture for a vehicle-mounted flexible OLED curved screen, employing the assembly and positioning fixture for a vehicle-mounted flexible OLED curved screen as described in any one of claims 1-9, characterized in that... The method includes the following steps: S1, Position and adsorb the curved cover plate onto the second positioning fixture, and position and place the flexible OLED panel onto the first positioning fixture; S2, the servo moving module controls the end shaft to move upward, so that the locking adhesive strip contacts and adheres to the flexible OLED panel; the end shaft drives the semi-circular positioning roller and the locking adhesive strip to move upward continuously until the central axis position of the flexible OLED panel is in contact with the central axis position of the curved cover plate, and the end shaft does not rotate during the process; S3, the end control module controls the inner lifting strip and the locking adhesive strip to move down relative to the semi-circular positioning roller. When the inner lifting strip and the locking adhesive strip move to the receiving groove, the end control module controls the semi-circular positioning roller to close together to form a cylinder. S4, the servo moving module controls the cylinder formed by the mutual closing of the semi-circular positioning rollers through the end shaft to move along the arc of the curved cover plate to complete the bonding.

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