Flat cable turnover mechanism

Abstract

The utility model relates to the field of electronic assembly, in particular to a flat cable turnover mechanism which comprises a base, a driving device and a turnover device, the driving device comprises a motor and a rotating shaft, the motor is connected with the base, an output shaft of the motor and the rotating shaft are coaxially fixed, the turnover device comprises an L-shaped connecting plate and two clamping blocks oppositely arranged in the vertical direction, and the L-shaped connecting plate is connected with the base. One side of the connecting plate is fixed to the rotating shaft, the other side of the connecting plate is connected with the clamping block, the driving device can drive the clamping block to rotate with the rotating shaft as the circle center, and the two sets of FPC flat cables are located on the same side of the edge of the display panel at intervals. The FPC flat cable overturning device has the technical effects of overturning the FPC flat cable and reducing damage to the FPC flat cable.

Description

Technical Field

[0001] The present application relates to the field of electronic assembly, and in particular to a cable flipping mechanism. Background Art

[0002] At present, in the field of electronic assembly, the bonding of FPC cables and display panels is an important process. The FPC cables are "h"-shaped, and the bonding ends of the cables and the display panel are divided into the first group of cables and the second group of cables by a U-shaped groove. The FPC cables need to be bonded to both sides of the display panel. In actual use, the FPC cable bonding process is completed by mechanical equipment. The mechanical equipment first bonds and binds the first group of FPC cables on the front of the display panel, and then flips the second group of FPC cables to the other side of the screen to facilitate subsequent mechanical bonding work.

[0003] When mechanical equipment flips the second set of cables, two methods commonly used in the prior art are: a push rod pushing method: this method uses a push rod to push the FPC cable to bend the FPC to the back of the display panel, and then perform the bonding work; a suction cup adsorption method: this method uses a suction cup to adsorb the FPC cable, and then moves it to a designated position for bonding.

[0004] While these existing bonding methods can meet production needs to a certain extent, they also have significant drawbacks. The hard contact between the push rod and the FPC cable causes stress concentration on the FPC cable. This localized, short-term excessive pressure on the FPC cable can increase friction between the FPC cable and the display panel, causing irreversible scratches on the FPC cable and seriously affecting product quality and reliability. The suction cup has limited adsorption capacity and is not suitable for bonding large FPC cables. Utility Model Content

[0005] The purpose of this application is to overcome the above technical problems and provide a cable flipping mechanism.

[0006] A cable flipping mechanism is used for gluing and laminating a display screen, wherein the display screen includes a display panel and two sets of FPC cables to be bonded to the display panel, including:

[0007] base;

[0008] A driving device, the driving device comprising a motor and a rotating shaft, the motor being connected to the base, and the output shaft of the motor being coaxially fixed to the rotating shaft;

[0009] A flipping device includes an L-shaped connecting plate and two clamping blocks arranged opposite to each other in a vertical direction, one side of the connecting plate is fixed to the rotating shaft, and the other side is connected to the clamping block, the driving device can drive the clamping block to rotate with the rotating shaft as the center of the circle, and the two groups of FPC cables are spaced apart and located on the same side of the edge of the display panel. During assembly, the first group of the two groups of FPC cables is fixed, and the flipping device clamps the second group of FPC cables. When the motor is started, the second group of FPC cables can be rotated at a certain angle along the edge of the display panel with the rotating shaft as the center of the circle and the connecting plate as the radius to the other side of the display panel.

[0010] By adopting the above solution, the cable is flipped to the other side of the display panel at a certain angle, so that the cable can adapt to the change of pressure more evenly during the flipping process, reducing the risk of FPC cable wear caused by increased friction between the FPC cable and the display panel due to excessive local pressure on the FPC.

[0011] In one embodiment, the base is provided with a guide slot, and a sliding plate is provided on a side where the output shaft of the motor is located, and the sliding plate cooperates with the guide slot.

[0012] By adopting the above solution, the sliding plate slides in the guide slot, thereby controlling the position of the driving device.

[0013] In one embodiment, a slider is provided at one end of the rotating shaft facing away from the motor, and a sliding groove that cooperates with the slider is provided on the contact surface between the connecting plate and the slider.

[0014] By adopting the above solution, the connecting plate moves in the sliding groove, and the rotation radius of the clamping block on the sliding plate can be controlled.

[0015] In one embodiment, a side of the upper clamping block facing away from the lower clamping block is connected to a cylinder, and the lower clamping block can support the FPC cable.

[0016] By adopting the above solution, the cylinder can drive the upper clamping block to move toward the lower clamping block to achieve clamping of the FPC cable.

[0017] In one embodiment, the lower clamping block includes a clamping portion and a supporting portion, the clamping portion protrudes from the supporting portion, the portion of the FPC cable close to the display panel is located in the clamping portion, and the portion of the FPC cable away from the display panel is located in the supporting portion.

[0018] By adopting the above solution, it is avoided that the contact area with the FPC cable is too large when clamping the FPC cable, which may cause damage to the cable.

[0019] In one embodiment, soft rubber protrusions are distributed in an array on the surface of the clamping portion.

[0020] By adopting the above solution, the cable is prevented from slipping during rotation, and the soft rubber prevents the cable from being damaged by hard contact with the clamp.

[0021] In one embodiment, the upper clamping block includes a claw portion and a sliding portion, the claw portion can clamp the FPC cable, the angle between the sliding portion and the claw portion is between 150 degrees and 165 degrees, and the sliding portion is connected to the cylinder.

[0022] By adopting the above solution, the force transmitted by the claw portion is concentrated in the direction of the FPC board.

[0023] In one embodiment, the claw portion is hinged to the sliding portion, and an elastic reset member is sleeved on the hinge pivot.

[0024] By adopting the above solution, the elastic reset member plays a buffering role, thereby preventing the claws from clamping the FPC board with excessive force and damaging the FPC board.

[0025] In one embodiment, the elastic return member includes a first end and a second end, the angle between the first end and the second end is the same as the angle between the claw portion and the sliding portion, and the first end and the second end can rotate around the pivot and have an elastic force between each other.

[0026] By adopting the above solution, the elastic force direction of the elastic reset member is adapted to the claw portion and the sliding portion.

[0027] In one embodiment, the relative positions of the elastic reset member, the claw portion, and the sliding portion are fixed, and the limiting plate allows the upper clamping block to deform only upward.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The FPC cable is clamped by the flipping device, and the driving device drives the flipping device to rotate, so that the FPC cable is offset relative to the display panel to form a certain angle. The FPC cable moves from the side as the starting point to the other side of the display panel, so that the cable can adapt to the pressure change more evenly during the flipping process, reducing the risk of FPC cable wear caused by increased friction between the FPC cable and the display panel due to excessive local pressure on the FPC cable.

[0030] 2. By setting a guide slot on the contact surface between the base and the drive device, and setting a slider connected to the sliding slot of the connecting plate at the end of the rotating shaft away from the motor, the working position and flip angle of the flip device can be controlled, so that the flip device can be moved to the optimal working position to ensure that the FPC cable can be flipped normally.

[0031] 3. By installing an elastic reset part between the claw and the sliding part, when the clamping force between the clamping blocks is too large, the claw will be forced to deviate in the opposite direction of the FPC cable under the action of the elastic reset part, avoiding damage to the FPC cable due to hard contact between the clamping block and the FPC cable due to excessive clamping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the cable flipping mechanism structure provided in the first embodiment of the present application.

[0033] Figure 2 It is a schematic diagram of the display structure.

[0034] Figure 3 It is a structural diagram of the turning device and the rotating shaft.

[0035] Figure 4 It is a schematic diagram of the clamping block structure.

[0036] Figure 5 This is a schematic diagram of the display screen structure before assembly.

[0037] Figure 6 It is a schematic diagram of the display screen structure after assembly.

[0038] Figure 7 This is a schematic diagram of the clamping block structure of the second embodiment of the present application.

[0039] Figure 8 It is a schematic diagram of the structure of the elastic reset member.

[0040] Explanation of the accompanying drawings: 1. Base; 11. Guide slot; 2. Driving device; 21. Motor; 22. Rotating shaft; 221. Slider; 3. Flipping device; 31. Connecting plate; 311. Sliding slot; 32. Clamping block; 321. Clamping portion; 3211. Soft rubber protrusion; 322. Bearing portion; 323. Claw portion; 3231. First limiting slot; 324. Sliding portion; 3241. Second limiting slot; 3242. Stop plate; 4. Sliding plate; 5. Cylinder; 6. Elastic reset member; 61. First end portion; 62. Second end portion; 7. Display screen; 71. Display panel; 72. FPC cable. DETAILED DESCRIPTION

[0041] Therefore, it is necessary to provide a cable flipping mechanism that can reduce damage to the FPC cables included in the display screen.

[0042] See also Figure 1-2 , Figure 1The first embodiment of the present application provides a cable flipping mechanism for laminating a display screen 7, which includes a display panel 71 and an FPC cable 72 to be bonded to the display panel 71. The cable flipping mechanism includes a base 1, a driving device 2, and a flipping device 3.

[0043] The driving device 2 includes a motor 21 and a rotating shaft 22. The output shaft of the motor 21 is coaxially fixed with the rotating shaft 22. A sliding plate 4 is provided on the side where the output shaft of the motor 21 is located. A guide slot 11 is provided on the base 1. The sliding plate 4 is provided with a threaded hole at a position relative to the guide slot 11. The bolt passes through the threaded hole and the guide slot 11 on the sliding plate 4. The bolt is tightened with a nut to achieve the connection between the sliding plate 4 and the base 1. The sliding plate 4 can be moved inside the guide slot 11 by the bolt, so that the driving device 2 slides relative to the base 1, thereby controlling the working position.

[0044] Please also refer to Figure 3-4 , Figure 3 This is a schematic diagram of the structure of the flipping device and the rotating shaft. The flipping device 3 includes an L-shaped connecting plate 31 and two clamping blocks 32 arranged vertically opposite each other. One side of the connecting plate 31 is fixed to the rotating shaft 22, and the other side is connected to the clamping blocks 32. This allows the clamping blocks 32 to be offset from the rotation center of the rotating shaft 22, allowing the drive device 2 to drive the clamping blocks 32 to rotate about the rotating shaft 22. Before assembly, the two sets of FPC cables 72 are located on the same side of the edge of the display panel 71. A slider 221 is provided at the end of the rotating shaft 22 facing away from the motor 21. The contact surface between the connecting plate 31 and the slider 221 is provided with a sliding groove 311 that mates with the slider 221. The connecting plate 31 can slide relative to the sliding plate 4 through the sliding groove 311, thereby controlling the offset distance between the clamping blocks 32 and the rotation center of the rotating shaft 22, changing the rotation radius of the clamping blocks 32, and ensuring that the FPC cables 72 can smoothly rotate to the other side of the display panel 71.

[0045] The upper clamping block 32 is provided with a cylinder 5 on the side away from the lower clamping block 32, and a telescopic rod connected to the upper clamping block 32 is provided inside the cylinder 5. The cylinder 5 can drive the telescopic rod to drive the upper clamping block 32 to move up and down, and the lower clamping block 32 can support the FPC cable 72. The lower clamping block 32 includes a clamping portion 321 and a bearing portion 322. The clamping portion 321 protrudes from the bearing portion 322. The portion of the FPC cable 72 close to the display panel 71 is located in the clamping portion 321, and the portion of the FPC cable 72 away from the display panel 71 is located in the bearing portion 322. The clamping portion 321 is used to cooperate with the upper clamping block 32 to clamp the FPC cable 72, and the bearing portion 322 is used to support the remaining part of the FPC cable 72, while avoiding the contact area between the lower clamping block 32 and the FPC cable 72 being too large, resulting in an excessive force area of ​​the FPC cable 72, thereby causing damage.

[0046] The upper clamping block 32 includes a claw portion 323 and a sliding portion 324. The claw portion 323 can clamp the FPC cable 72. The angle formed between the sliding portion 324 and the claw portion 323 is between 150 degrees and 165 degrees, so that the force transmitted by the claw portion 323 is concentrated in the direction of the FPC board. At the same time, it avoids the angle between the sliding portion 324 and the claw portion 323 being too large, resulting in insufficient clamping force, or too small, resulting in excessive stress concentration and causing damage to the FPC cable 72.

[0047] Please also refer to Figure 5-6 , Figure 5 This is a schematic diagram of the display screen structure before assembly. Before assembly, the drive device 2 is first moved to a suitable working position through the guide slot 11, and then the rotation radius of the clamp 32 is controlled through the relative displacement of the sliding slot 311 and the slider 221 to ensure that the FPC cable 72 can be smoothly rotated to the other side of the display panel 71. During assembly, one group of FPC cables 72 has been bound and is in a fixed state. The flipping device 3 clamps the other group of FPC cables 72. The motor 21 is started, which can rotate one group of FPC cables 72 along the edge of the display panel 71 at a certain angle with the rotating shaft 22 as the center and the connecting plate 31 as the radius. The FPC cables 72 move toward the other side of the display panel 71 starting from the side edge, so that the FPC cables 72 can adapt to the pressure changes more evenly during the flipping process, reducing the risk of wear of the FPC cables 72 caused by increased friction between the FPC cables 72 and the display panel 71 due to excessive local pressure of the FPC. After assembly, the motor 21 drives the rotating shaft 22 to rotate, driving the clamping block 32 to return to its initial angle. The group of FPC cables 72 that is not bonded is located on the other side of the display panel 71 and can be bound to the other side of the display panel 71.

[0048] Example 2

[0049] See also Figure 7 , Figure 7 This is a schematic diagram of the clamping block structure of the second embodiment of the present application. The difference between this embodiment and the above embodiments is that, in this embodiment, soft rubber protrusions 3211 are distributed in an array on the surface of the clamping portion 321, which increase the friction between the clamping portion 321 and the FPC cable 72, preventing the FPC cable 72 from sliding on the clamping block 32 during the rotation of the clamping block 32, and avoiding hard contact between the clamping block 32 and the FPC cable 72, which may cause the FPC cable 72 to be crushed.

[0050] Please also refer to Figure 8 , Figure 8This is a schematic diagram of the structure of the elastic return member. The claw portion 323 and the sliding portion 324 are hinged, and an elastic return member 6 is mounted at the hinged pivot. The elastic return member 6 includes a first end 61 and a second end 62. The angle between the first end 61 and the second end 62 is the same as the angle between the claw portion 323 and the sliding portion 324. The elastic return member 6 is a torsion spring. The first end 61 and the second end 62 are respectively two torsion arms of the torsion spring. The first end 61 and the second end 62 can rotate around the pivot between the claw portion 323 and the sliding portion 324, and there is an elastic force between them. The claw portion 323 is provided with a first limiting groove 3231 adapted to the first end portion 61, the sliding portion 324 is provided with a second limiting groove 3241 adapted to the second end portion 62, and the sliding portion 324 is provided with a stop plate 3242 abutting against the claw portion 323 on the side facing away from the cylinder 5. When the upper clamping block 32 is in a natural state, the stop plate 3242 abuts against the claw portion 323. Otherwise, the claw portion 323 deflects downward under the influence of gravity, thereby affecting the clamping effect.

[0051] During use, the claw portion 323 abuts against the FPC board. When the pressure is too great, pressure is generated between the first end portion 61 and the second end portion 62 and the first limiting groove 3231 and the second limiting groove 3241 respectively. The first limiting groove 3231 and the second limiting groove 3241 force the angle between the first end portion 61 and the second end portion 62 to change. The force exerted on the FPC cable 72 is the elastic force generated between the first end portion 61 and the second end portion 62. The FPC cable 72 will not be damaged due to excessive pressure.

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A cable turning mechanism for gluing and laminating a display screen (7), wherein the display screen (7) comprises a display panel (71) and two sets of FPC cables (72) to be bound to the display panel (71), characterized in that: include: Base (1); A driving device (2), the driving device (2) comprising a motor (21) and a rotating shaft (22), the motor (21) being connected to the base (1), and the output shaft of the motor (21) being coaxially fixed to the rotating shaft (22); A flipping device (3) includes an L-shaped connecting plate (31) and two clamping blocks (32) arranged opposite to each other in a vertical direction. One side of the connecting plate (31) is fixed to the rotating shaft (22), and the other side is connected to the clamping block (32). The driving device (2) can drive the clamping block (32) to rotate with the rotating shaft (22) as the center of the circle. The two groups of the FPC cable (72) are spaced apart and located on the same side of the edge of the display panel (71). During assembly, the first group of the FPC cable (72) has been bonded. The flipping device (3) clamps the second group of the FPC cable (72). The motor (21) is started to rotate the second group of the FPC cable (72) with the rotating shaft (22) as the center of the circle and the connecting plate (31) as the radius at a certain angle along the edge of the display panel (71) to the other side of the display panel (71), thereby facilitating bonding.

2. The cable turning mechanism according to claim 1, characterized in that: The base (1) is provided with a guide slot hole (11), and a sliding plate (4) is provided on the side where the output shaft of the motor (21) is located, and the sliding plate (4) is matched with the guide slot hole (11).

3. The cable turning mechanism according to claim 2, characterized in that: A slider (221) is provided at one end of the rotating shaft (22) facing away from the motor (21), and a sliding groove (311) that cooperates with the slider (221) is provided on the contact surface between the connecting plate (31) and the slider (221).

4. The cable turning mechanism according to claim 1, characterized in that: The side of the upper clamping block (32) facing away from the lower clamping block (32) is connected to the cylinder (5), and the lower clamping block (32) can support the FPC cable (72).

5. The cable turning mechanism according to claim 4, characterized in that: The lower clamping block (32) comprises a clamping portion (321) and a bearing portion (322); the clamping portion (321) protrudes from the bearing portion (322); a portion of the FPC cable (72) close to the display panel (71) is located in the clamping portion (321); and a portion of the FPC cable (72) away from the display panel (71) is located in the bearing portion (322).

6. The cable turning mechanism according to claim 5, characterized in that: The surface of the clamping portion (321) is provided with an array of soft rubber protrusions (3211).

7. The cable turning mechanism according to claim 6, characterized in that: The upper clamping block (32) includes a claw portion (323) and a sliding portion (324). The claw portion (323) can clamp the FPC cable (72). The angle between the sliding portion (324) and the claw portion (323) is between 150 degrees and 165 degrees. The sliding portion (324) is connected to the cylinder (5).

8. The cable turning mechanism according to claim 7, characterized in that: The claw portion (323) is hinged to the sliding portion (324), and an elastic reset member (6) is sleeved on the hinge axis.

9. The cable turning mechanism according to claim 8, characterized in that: The elastic return member (6) comprises a first end portion (61) and a second end portion (62), wherein the angle between the first end portion (61) and the second end portion (62) is the same as the angle between the claw portion (323) and the sliding portion (324), and the first end portion (61) and the second end portion (62) can rotate around a pivot and have an elastic force acting on each other.

10. The cable turning mechanism according to claim 9, characterized in that: The claw portion (323) is provided with a first limiting groove (3231) adapted to the first end portion (61), the sliding portion (324) is provided with a second limiting groove (3241) adapted to the second end portion (62), and a stop plate (3242) abutting against the claw portion (323) is provided on the side of the sliding portion (324) facing away from the cylinder (5).

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