Full-automatic backlight assembling machine for mobile phone screen processing

Abstract

The application relates to the technical field of backlight assembly machines, and discloses a full-automatic backlight assembly machine for mobile phone screen processing, which is used to solve the problem that the clamping part falls off due to the sudden movement of a liquid crystal panel driven by a carrier platform after the clamping block is abraded. After the film tearing tongue of the clamping block clamps the protective film, the stepping motor drives the rotating plate, the supporting rod and the clamping block to rotate, so that one end of the protective film is lifted up. Meanwhile, the gear meshes with the arc-shaped gear rack to drive the gear, the supporting shaft and the first clamping plate to rotate, the first clamping plate rotates towards the second clamping plate, so that the second clamping plate and the first clamping plate clamp the lifted protective film, the clamping range and the clamping force of the protective film are increased, and the clamped part of the protective film is prevented from falling off when the liquid crystal panel is suddenly moved by the first carrier platform or the second carrier platform.

Description

Technical Field

[0001] This application relates to the field of backlight assembly machine technology, and in particular to a fully automatic backlight assembly machine for mobile phone screen processing. Background Technology

[0002] The fully automatic backlight assembly machine for mobile phone screens is a high-precision, automated, and highly specialized device designed to precisely align and permanently bond backlight modules to LCD panels, forming a complete LCD display module. During operation, the machine uses two conveyor mechanisms to feed the backlight modules and LCD panels. A transfer mechanism places the LCD panel onto a carrier platform, and after the film is removed by a film-removing mechanism, another transfer mechanism bonds the backlight module and LCD panel together. Finally, the assembly is output via an output mechanism.

[0003] When the film-removing mechanism of the fully automatic backlight assembly machine for mobile phone screens removes the protective film from the LCD panel, the clamping blocks of the film-removing mechanism need to clamp the protective film on both sides of the "film-removing tongue". By rotating the film-removing mechanism, one end of the protective film is lifted up. While the carrier platform moves the LCD panel, the film-removing mechanism remains stationary, thereby removing the protective film from the LCD panel.

[0004] However, since the film-peeling mechanism needs to peel off tens of thousands of protective films every day, friction is inevitable between the clamping block of the film-peeling mechanism and the protective film, which causes wear on the clamping part of the clamping block. Even if the "peeling tongue" of the protective film can be clamped and lifted, when the carrier platform suddenly moves the LCD panel, the "peeling tongue" of the protective film will fall off the clamping part of the clamping block, thus affecting the removal of the protective film on the LCD panel. Summary of the Invention

[0005] This application proposes a fully automatic backlight assembly machine for mobile phone screen processing, which has the advantage of strengthening the clamping of the protective film on the LCD panel, and solves the problem of the clamping part falling off due to the sudden movement of the LCD panel driven by the carrier platform after the clamping block is worn.

[0006] To achieve the above objectives, this application adopts the following technical solution: a fully automatic backlight assembly machine for mobile phone screen processing, comprising a main body, a liquid crystal panel conveying mechanism, a backlight module conveying mechanism, an output mechanism, a transfer mechanism, a film-peeling mechanism, a first carrier platform, and a second carrier platform. The film-peeling mechanism includes a support plate, a stepper motor, a rotating plate, a support rod, a cylinder, and a clamping block. The rotating plate is provided with an external clamping mechanism for reinforcing the clamping of the lifted protective film. The external clamping mechanism includes: a support shaft, one end of which passes through the rotating plate and is fixedly fitted with a gear; an arc-shaped rack, fixedly installed on the side wall of the support plate and meshing with the gear; a first clamping plate, fixedly fitted on the other end of the support shaft, with its end vertically downward; and a second clamping plate, movably fitted on the other end of the support shaft and horizontally positioned.

[0007] Furthermore, a permanent magnet is embedded at the top of the second clamping plate, and the permanent magnet generates a magnetic force that attracts the support rod above the second clamping plate.

[0008] Furthermore, the center of the arc-shaped rack is on the same straight line as the axis of the stepper motor output shaft.

[0009] Furthermore, when the output shaft of the stepper motor drives the rotating plate and its connecting structure to rotate 90°, the gear drives the support shaft to rotate 90°.

[0010] Furthermore, a power groove is provided at the bottom end of the second clamping plate. The power groove is provided with an anti-adhesion mechanism for cleaning the protective film adhering to the bottom end of the second clamping plate. The anti-adhesion mechanism includes: a slider, which is slidably installed in the power groove, and an elastic push block is embedded at the bottom end of the slider; a return spring, one end of which is fixedly connected to the slider and the other end of which is fixedly connected to the side wall of the power groove; and a steel wire rope, which passes through the middle of the return spring, one end of which is fixedly connected to the slider and the other end of which is wound around the support shaft.

[0011] Furthermore, the return spring is always in a compressed state, and the return spring pushes the slider to move towards the end of the power groove away from the support shaft.

[0012] Furthermore, a compression bladder is sleeved on the outer side of the reset spring, and an installation groove is provided at the lower end of the clamping block above. The installation groove contains: a storage bladder located at the top of the installation groove; a reinforcing block, which is T-shaped and slidably installed in the installation groove, with its top end fixedly connected to the storage bladder; and an elastic block fixedly installed at the bottom end of the reinforcing block crossbar and locked in the installation groove. The storage bladder in the installation groove is connected to the compression bladder in the power groove through a connecting pipe.

[0013] Furthermore, the top of the second clamping plate is embedded with an air supply valve, which is connected to the compression bladder. A damping hole is provided on the reinforcing block at the bottom of the storage bladder, and the gas in the storage bladder is discharged through the damping hole.

[0014] Furthermore, the air supply valve directs the airflow from the outside to the compression bladder.

[0015] This application has the following beneficial effects:

[0016] 1. The fully automatic backlight assembly machine for mobile phone screen processing provided in this application, after the clamping block clamps the "tear tongue" of the protective film, the stepper motor drives the rotating plate, support rod and clamping block to rotate, thereby lifting one end of the protective film. At the same time, the gear and the arc rack mesh to drive the gear, support shaft and the first clamping plate to rotate, so that the first clamping plate rotates towards the second clamping plate, thereby the second clamping plate and the first clamping plate clamp the lifted protective film, increasing the clamping range and clamping force of the protective film, and preventing the clamped part of the protective film from falling off when the first carrier platform or the second carrier platform moves the liquid crystal panel suddenly.

[0017] 2. The fully automatic backlight assembly machine for mobile phone screen processing provided in this application drives the support shaft and the first clamping plate to rotate through gears. When clamping the "tear tongue" of the protective film, the support shaft winds the steel wire rope, causing the steel wire rope to pull the slider in the power groove to move towards the support shaft. When resetting, the elastic push block in the slider pushes the side wall of the protective film stuck to the second clamping plate, causing the protective film to be pushed off, preventing the protective film from adhering to the second clamping plate and affecting the clamping of the next protective film by the second clamping plate and the first clamping plate.

[0018] 3. The fully automatic backlight assembly machine for mobile phone screen processing provided in this application, when the slider moves towards the support shaft, the slider pushes the extrusion bladder, so that the gas in the extrusion bladder enters the storage bladder through the connecting pipe, thereby expanding the storage bladder. The storage bladder pushes the reinforcing block to further clamp the protective film, preventing the clamping block from becoming unstable at the "tear tongue" position of the protective film after wear. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0020] This application can be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein:

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the main body of the present invention;

[0023] Figure 3 This is a schematic diagram of the film-tearing mechanism of the present invention;

[0024] Figure 4 For the present invention Figure 3Rear view;

[0025] Figure 5 This is a cross-sectional view of the second clamping plate of the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged view of the local structure at point A;

[0027] Figure 7 This is a schematic diagram of the structure of the first clamping plate and the second clamping plate of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the clamping block, the first clamping plate, and the second clamping plate of the present invention.

[0029] In the diagram: 1. Main body; 2. LCD panel conveying mechanism; 3. Backlight module conveying mechanism; 4. Output mechanism; 5. Transfer mechanism; 6. Film tearing mechanism; 61. Support plate; 62. Stepper motor; 63. Rotating plate; 64. Support rod; 65. Cylinder; 66. Clamping block; 661. Mounting slot; 67. External clamping mechanism; 671. Support shaft; 672. Gear; 673. Arc rack; 674. First clamping plate; 675. Second clamping plate; 676. Power slot; 68. Anti-sticking mechanism; 681. Slider; 682. Return spring; 683. Steel wire rope; 684. Squeezing bladder; 685. Storage bladder; 686. Reinforcing block; 687. Elastic block; 688. Connecting pipe; 691. Air supply valve; 692. Damping hole; 7. First carrier platform; 8. Second carrier platform; 9. Waste conveying mechanism. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0031] Example 1

[0032] Please see Figure 1 and Figure 2A fully automatic backlight assembly machine for mobile phone screen processing includes a main body 1, a liquid crystal panel conveying mechanism 2, a backlight module conveying mechanism 3, an output mechanism 4, a transfer mechanism 5, a film-peeling mechanism 6, a first carrier platform 7, a second carrier platform 8, and a waste conveying mechanism 9. The liquid crystal panel conveying mechanism 2 and the backlight module conveying mechanism 3 are fixedly installed on one side of the top of the main body 1. The liquid crystal panel conveying mechanism 2 and the backlight module conveying mechanism 3 have identical structures, each including two support side plates, two conveying rollers, a power motor, and a conveyor belt. The two support side plates are arranged parallel to each other and fixedly installed on the top of the main body 1. The ends of the two conveying rollers are movably inserted into the ends of the support side plates. One of the conveying rollers is fixedly connected to the main shaft of the power motor. The outer sides of the two conveying rollers are movably sleeved. Within the same conveyor belt, the LCD panel conveying mechanism 2 and the backlight module conveying mechanism 3 are arranged in parallel, with one end of each mechanism extending out of the main body 1. The LCD panel conveying mechanism 2 is used to feed LCD panels, and the backlight module conveying mechanism 3 is used to feed backlight modules. An output mechanism 4 is fixedly installed on the other side of the top of the main body 1, and the output mechanism 4 is symmetrically arranged with the LCD panel conveying mechanism 2. The output mechanism 4 includes two support side plates, two conveyor rollers, a power motor, and a conveyor belt. The connection method of the output mechanism 4 is the same as that of the LCD panel conveying mechanism 2 and the backlight module conveying mechanism 3. The output mechanism 4 is used to output the assembled LCD display module. A first carrier platform 7 and a second carrier platform 8 are fixedly installed at the top of the main body 1 between the components 4. The first carrier platform 7 and the second carrier platform 8 move in a "U" shape. The first carrier platform 7 and the second carrier platform 8 work alternately. A transfer mechanism 5 is fixedly installed on the main body 1 at both ends of the first carrier platform 7 and the second carrier platform 8. The transfer mechanism 5 includes a linear motor, a support arm, a power cylinder, and a suction cup. The linear motor is fixedly installed at the top of the main body 1. The support arm is fixedly connected to the moving end of the linear motor. The suction cup is fixedly connected to the support arm and is vertically downward. The power cylinder is fixedly installed on the support arm and is connected to the suction cup. The suction cup is used to pick up and transfer objects. The LCD panel conveying mechanism 2 and the output mechanism 4 are also included. The transfer mechanism 5 on one side is used to transfer the liquid crystal panel on the liquid crystal panel conveying mechanism 2 to the first carrier platform 7 or the second carrier platform 8, and to transfer the assembled liquid crystal display module on the first carrier platform 7 or the second carrier platform 8 to the output mechanism 4. The transfer mechanism 5 on one side of the backlight module conveying mechanism 3 is used to transfer the backlight component on the backlight module conveying mechanism 3 to the liquid crystal panel on the first carrier platform 7 or the second carrier platform 8. A film-tearing mechanism 6 is fixedly installed on the main body 1 between the liquid crystal panel conveying mechanism 2 and the backlight module conveying mechanism 3, and the working end of the film-tearing mechanism 6 is above the first carrier platform 7 and the second carrier platform 8. A waste conveying mechanism 9 is fixedly installed at the bottom end of the first carrier platform 7 and the second carrier platform 8.The waste conveying mechanism 9 includes two side plates, two conveying rollers, a power motor, and a conveyor belt. The two side plates are arranged parallel to each other and fixedly installed at the top of the main body 1. The two ends of the two conveying rollers are respectively movably inserted into the side plates on both sides. One of the conveying rollers is fixedly connected to the main shaft of the power motor. The same conveyor belt is fitted around the outer sides of both conveying rollers. The waste conveying mechanism 9 is used to convey the protective film torn off by the film-tearing mechanism 6.

[0033] Please see Figures 2-3 The film-tearing mechanism 6 includes a support plate 61, a stepper motor 62, a rotating plate 63, a support rod 64, a cylinder 65, and a clamping block 66. The support plate 61 is fixedly installed on the top of the main body 1. The stepper motor 62 is fixedly installed on the side of the support plate 61 away from the first carrier platform 7. The output shaft of the stepper motor 62 passes through and extends out of the support plate 61. The rotating plate 63 is fixedly connected to the output shaft of the stepper motor 62. One end of the rotating plate 63 is fixedly sleeved on the output shaft of the stepper motor 62. The support rod 64 is fixedly connected to the lower position of the other end of the rotating plate 63, and the clamping block 66 is fixedly installed on the support rod 64. The cylinder 65 is fixedly installed to the upper position of the other end of the rotating plate 63. The output end of the cylinder 65 is fixedly connected to the support rod 64. The output end of the cylinder 65 can drive the support rod 64 on the cylinder 65 to move up and down. The clamping block 66 is fixedly installed on the support rod 64 at the output end of the cylinder 65. The clamping blocks 66 on the two support rods 64 are positioned opposite each other.

[0034] Please see Figures 2-8The rotating plate 63 is provided with an external clamping mechanism 67 to reinforce the gripping of the lifted protective film. The external clamping mechanism 67 includes a support shaft 671, a gear 672, an arc-shaped rack 673, a first clamping plate 674, and a second clamping plate 675. One end of the support shaft 671 passes through the end of the rotating plate 63 away from the output shaft of the stepper motor 62. The gear 672 is fixedly sleeved on the end of the support shaft 671 that passes through the rotating plate 63. The arc-shaped rack 673 is fixedly installed on the side wall of the support plate 61, and the arc-shaped rack 673 meshes with the gear 672. The other end of the support shaft 671 is fixedly sleeved with the first clamping plate 674, and the end of the first clamping plate 674 is vertically downward. One end of the second clamping plate 675 is movably sleeved on the support shaft 671. The second clamping plate 675 is horizontally positioned. The direction of end 75 is the same as the direction of end 66 of clamping block 66; after cylinder 65 pushes the clamping block 66 above to clamp the "tear tongue" of the protective film, the output shaft of stepper motor 62 drives the rotating plate 63, support rod 64, cylinder 65 and clamping block 66 to rotate, thereby causing the two clamping blocks 66 to lift one end of the protective film. At the same time, gear 672 meshes with arc rack 673 to drive gear 672, support shaft 671 and first clamping plate 674 to rotate, causing the first clamping plate 674 to rotate toward the second clamping plate 675, thereby causing the second clamping plate 675 and the first clamping plate 674 to clamp the lifted protective film, increasing the clamping range and clamping force of the protective film, and preventing the clamped part of the protective film from falling off when the first carrier platform 7 or the second carrier platform 8 moves the LCD panel suddenly.

[0035] A permanent magnet is embedded at the top of the second clamping plate 675. The permanent magnet generates a magnetic force that attracts the support rod 64 above the second clamping plate 675. The permanent magnet at the top of the second clamping plate 675 attracts the support rod 64 above. When the support shaft 671 rotates, the second clamping plate 675 will not rotate with the support shaft 671, preventing the first clamping plate 674 from failing to contact the second clamping plate 675 to form a clamp.

[0036] The center of the arc-shaped rack 673 is on the same straight line as the axis of the output shaft of the stepper motor 62. When the output shaft of the stepper motor 62 drives the rotating plate 63 and its connecting structure to rotate, the support shaft 671 and the gear 672 on the rotating plate 63 rotate synchronously around the axis of the output shaft of the stepper motor 62, ensuring that the gear 672 can always mesh with the arc-shaped rack 673.

[0037] When the output shaft of the stepper motor 62 drives the rotating plate 63 and its connecting structure to rotate 90°, the gear 672 drives the support shaft 671 to rotate 90°, ensuring that the first clamping plate 674 can fit with the second clamping plate 675, so that the first clamping plate 674 and the second clamping plate 675 clamp the lifted protective film.

[0038] The working principle of Embodiment 1 of the present invention is as follows:

[0039] Please see Figures 1-8 The LCD panel is fed through the LCD panel conveying mechanism 2. The transfer mechanism 5 on one side of the LCD panel conveying mechanism 2 transfers the LCD panel to the first carrier platform 7 or the second carrier platform 8. At this time, the film-peeling mechanism 6 rotates to one side of the LCD panel. After the cylinder 65 pushes the clamping block 66 above to clamp the "film-peeling tongue" of the protective film on the LCD panel, the output shaft of the stepper motor 62 drives the rotating plate 63, support rod 64, cylinder 65 and clamping block 66 to rotate, thereby lifting the two clamping blocks 66. At one end of the protective film, gear 672 meshes with arc-shaped rack 673, causing gear 672, support shaft 671 and first clamping plate 674 to rotate, causing the first clamping plate 674 to rotate toward the second clamping plate 675, so that the second clamping plate 675 and the first clamping plate 674 clamp the lifted protective film, increasing the clamping range and clamping force of the protective film, and preventing the clamped part of the protective film from falling off when the first carrier platform 7 or the second carrier platform 8 drives the LCD panel to move suddenly.

[0040] Example 2

[0041] Example 2 is a further improvement based on Example 1.

[0042] Unlike Example 1, please refer to Figures 4-8The bottom end of the second clamping plate 675 is provided with a power groove 676. The power groove 676 contains an anti-adhesion mechanism 68 for cleaning the protective film adhering to the bottom end of the second clamping plate 675. The anti-adhesion mechanism 68 includes a slider 681, a return spring 682, and a steel wire rope 683. The slider 681 is slidably installed in the power groove 676. An elastic push block is fixedly embedded in the bottom end of the slider 681, with one end of the elastic push block extending out of the slider 681. A return spring 682 is fixedly connected to one end of the slider 681 near the support shaft 671, and the other end of the return spring 682 is fixedly connected to the side wall of the power groove 676. A steel wire rope 683 passes through the middle of the return spring 682, with one end of the steel wire rope 683 fixedly connected to the slider 681 and the other end wound around the support shaft 671. The output shaft of the stepper motor 62 drives the rotating plate 6... 3. When the support rod 64, cylinder 65, and clamping block 66 rotate, causing the two clamping blocks 66 to lift one end of the protective film, the gear 672 meshes with the arc-shaped rack 673, causing the gear 672, support shaft 671, and first clamping plate 674 to rotate. The rotating support shaft 671 winds the steel wire rope 683 in the power groove 676, thereby causing the steel wire rope 683 to pull the slider 681 towards the end of the power groove 676 near the support shaft 671. During reset, the support shaft 671 rotates in the opposite direction, and the elastic force of the reset spring 682 pushes the slider 681 to reset. At the same time, the elastic push block extending from the slider 681 pushes the side wall of the protective film that is stuck to the second clamping plate 675, causing the protective film to be pushed off, preventing the protective film from adhering to the second clamping plate 675 and affecting the clamping of the second clamping plate 675 and the first clamping plate 674 for the next protective film.

[0043] The return spring 682 is always in a compressed state, and the return spring 682 pushes the slider 681 to move towards the end of the power groove 676 away from the support shaft 671; the compressed return spring 682 generates a supporting force on the slider 681, and the return spring 682 pushes the slider 681 to reset, so that the slider 681 is at the end of the power groove 676 away from the support shaft 671, and the elastic push block on the slider 681 pushes the protective film sidewall that is attached to the bottom end of the second clamping plate 675 to prevent the protective film from sticking.

[0044] Please see Figures 4-8A compression bladder 684 is sleeved on the outer side of the return spring 682. An installation groove 661 is provided at the lower end of the clamping block 66 above. A storage bladder 685 is provided at the top of the installation groove 661. A reinforcing block 686 is fixedly connected to the bottom end of the storage bladder 685. The reinforcing block 686 is slidably installed in the installation groove 661 and is T-shaped. An elastic block 687 is fixedly connected to the bottom end of the crossbar of the reinforcing block 686 and is engaged in the installation groove 661. The storage bladder 685 in the installation groove 661 is connected to the compression bladder 684 in the power groove 676 through a connecting pipe 688. The slider 681 is supported by a steel wire rope 68... 3. During the pulling process towards the support shaft 671, the slider 681 pushes the compression bladder 684, causing the gas in the compression bladder 684 to enter the storage bladder 685 through the connecting pipe 688. The gas in the storage bladder 685 increases, the pressure increases, and expansion occurs. The storage bladder 685 pushes the reinforcing block 686 to move outward from the mounting groove 661, thereby causing the reinforcing block 686 to squeeze the elastic block 687. The reinforcing block 686 moving outward from the mounting groove 661 enhances the clamping force of the two clamping blocks 66 on the "tear tongue" of the protective film, thereby preventing the clamping blocks 66 from becoming unstable at the "tear tongue" position of the protective film after wear.

[0045] The top of the second clamping plate 675 is fitted with an air supply valve 691, which is located at the end of the second clamping plate 675 near the support shaft 671. The air supply valve 691 is connected to the compression bladder 684. A damping hole 692 is provided on the reinforcing block 686 at the bottom of the storage bladder 685. The gas in the storage bladder 685 is discharged through the damping hole 692. The damping hole 692 is a hole with an extremely slow leakage rate. During each working cycle, the gas in the compression bladder 684 enters the storage bladder 685 through the connecting pipe 688. During the working cycle, the gas in the storage bladder 685 is discharged through the damping hole 692. The gas discharged from the damping hole 692 can blow the protective film adhering to the bottom of the clamping block 66, causing the protective film to fall off the clamping block 66 and preventing the protective film from adhering to the clamping block 66 and affecting subsequent operations.

[0046] The air supply valve 691 directs the flow from the outside to the squeezing bladder 684. After the squeezing bladder 684 is squeezed by the slider 681 and the gas inside the squeezing bladder 684 flows out, the return spring 682 pushes the slider 681 to return to its original position, causing the squeezing bladder 684 to extend. External gas then enters the squeezing bladder 684 through the air supply valve 691 to replenish the gas inside the squeezing bladder 684.

[0047] The working principle of Embodiment 2 of the present invention is as follows:

[0048] Please see Figures 1-8When the output shaft of the stepper motor 62 drives the rotating plate 63, support rod 64, cylinder 65 and clamping block 66 to rotate, causing the two clamping blocks 66 to lift one end of the protective film, the gear 672 meshes with the arc rack 673 to drive the gear 672, support shaft 671 and first clamping plate 674 to rotate. The rotating support shaft 671 winds the wire rope 683 in the power groove 676, so that the wire rope 683 pulls the slider 681 to move towards the end of the power groove 676 close to the support shaft 671. During the reset, the support shaft 671 rotates in the opposite direction, and the elastic force of the reset spring 682 pushes the slider 681 to reset. At the same time, the elastic push block extending from the slider 681 pushes the side wall of the protective film that is stuck on the second clamping plate 675, so that the protective film is pushed off, preventing the protective film from sticking to the second clamping plate 675 and affecting the clamping of the second clamping plate 675 and the first clamping plate 674 for the next protective film;

[0049] As the slider 681 is pulled towards the support shaft 671 by the wire rope 683, the slider 681 pushes the compression bladder 684, causing the gas in the compression bladder 684 to enter the storage bladder 685 through the connecting pipe 688. The gas in the storage bladder 685 increases, the pressure increases, and it expands. The storage bladder 685 pushes the reinforcing block 686 to move outward of the mounting groove 661, thereby causing the reinforcing block 686 to squeeze the elastic block 687. The reinforcing block 686, which moves outward of the mounting groove 661, enhances the clamping force of the two clamping blocks 66 on the "tear tongue" of the protective film, thereby preventing the clamping blocks 66 from becoming unstable at the "tear tongue" position of the protective film after wear.

Claims

1. A full-automatic backlight assembly machine for mobile phone screen processing, comprising a main body (1), a liquid crystal panel conveying mechanism (2), a backlight module conveying mechanism (3), an output mechanism (4), a transfer mechanism (5), a film tearing mechanism (6), a first carrier platform (7) and a second carrier platform (8), the film tearing mechanism (6) comprises a support plate (61), a stepping motor (62), a rotating plate (63), a support rod (64), a gas cylinder (65) and a clamping block (66), characterized in that: The rotating plate (63) is provided with an outer clamping mechanism (67) for clamping the lifted protective film, the outer clamping mechanism (67) comprises: A support shaft (671) penetrates the rotating plate (63) at one end and is fixedly sleeved with a gear (672); An arc-shaped rack (673) is fixedly installed on the side wall of the support plate (61) and is engaged with the gear (672); A first clamping plate (674) is fixedly sleeved at the other end of the support shaft (671) and the end portion is vertically downward; A second clamping plate (675) is movably sleeved at the other end of the support shaft (671) and is horizontally arranged; A power groove (676) is formed at the bottom end of the second clamping plate (675), and a anti-sticking mechanism (68) for cleaning the protective film adhered to the bottom end of the second clamping plate (675) is arranged in the power groove (676), the anti-sticking mechanism (68) comprises: A sliding block (681) is slidingly installed in the power groove (676), and a elastic push block is embeddedly installed at the bottom end of the sliding block (681); A reset spring (682) is fixedly connected at one end with the sliding block (681) and at the other end with the side wall of the power groove (676); A steel wire rope (683) penetrates the middle of the reset spring (682), is fixedly connected at one end with the sliding block (681) and is wound on the support shaft (671) at the other end; The reset spring (682) is always in a compressed state, and the reset spring (682) pushes the sliding block (681) to move away from the support shaft (671) at one end of the power groove (676); An extrusion capsule (684) is sleeved outside the reset spring (682), an installation groove (661) is formed at the lower end of the clamping block (66) above, and a storage capsule (685) is arranged in the installation groove (661); The storage capsule (685) in the installation groove (661) is in communication with the extrusion capsule (684) in the power groove (676) through a communication pipe (688). A permanent magnet block is embedded at the top end of the second clamping plate (675), and the permanent magnet block generates a magnetic force attracting the support rod (64) above the second clamping plate (675). The center of the arc-shaped rack (673) is in a same straight line with the shaft center of the output shaft of the stepping motor (62). When the output shaft of the stepping motor (62) drives the rotating plate (63) and the connected structure to rotate 90°, the gear (672) drives the support shaft (671) to rotate 90°.

2. The full-automatic backlight assembling machine for mobile phone screen processing according to claim 1, characterized in that: A gas supplement valve (691) is embedded at the top end of the second clamping plate (675), the gas supplement valve (691) is in communication with the extrusion capsule (684), a damping hole (692) is formed on the reinforcing block (686) at the bottom end of the storage capsule (685), and the gas in the storage capsule (685) is discharged through the damping hole (692).

3. The full-automatic backlight assembling machine for mobile phone screen processing according to claim 1, characterized in that: ​ 4. The full-automatic backlight assembling machine for mobile phone screen processing according to claim 1, characterized in that: ​ 5. The full-automatic backlight assembling machine for mobile phone screen processing according to claim 1, characterized in that: ​ 6. The full-automatic backlight assembling machine for mobile phone screen processing according to claim 5, characterized in that: The flow direction of the air supplement valve (691) is from the outside to the inside of the extrusion capsule (684).

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