KR100805848B1 - The automatic assembly progress for Back light unit - Google Patents

Abstract

The present invention is a manufacturing method by the automatic assembly process of the backlight unit, the conventional manufacturing process of the backlight (back light) is mostly processed by hand, the work time and the number of people required a lot of work and contaminated by foreign materials by manual work It was developed to produce a backlight unit by automated equipment to solve the problem that is;

In the assembling of the backlight unit comprising the step of assembling and inspecting the components constituting the backlight;

A diffusion sheet adsorption step of vacuum adsorbing and lifting the diffusion sheet constituting the backlight by first and second adsorption pads; A conveying step of allowing the adsorbed diffusion sheet to enter the rear end of the diffusion sheet inlet of the clean device; The foreign material removal step of removing the foreign matter entering the diffusion sheet at the same speed as the diffusion sheet is transported by a clean device while the suction force of the first suction pad is eliminated and the suction force of the second suction pad is maintained. It relates to an automatic assembly process of the backlight unit, characterized in that it comprises a diffusion sheet automatic feeding process made.

Backlight, automation

Description

Automatic assembly progress for Back light unit

1 is a block diagram showing an automatic diffusion sheet supply process according to an embodiment of the present invention

Figure 2 is a side view showing an automatic feeding device of the diffusion sheet according to an embodiment of the present invention

3 is a block diagram showing a process for assembling a diffusion sheet according to another embodiment of the present invention.

Figure 4 is a side view showing the automatic diffusion sheet assembly assembly according to another embodiment of the present invention

5 is a block diagram showing a first inspection process according to another embodiment of the present invention.

Figure 6 is a side view showing a case tilting device according to another embodiment of the present invention

7 is a block diagram illustrating a second inspection process according to another embodiment of the present invention.

8 is a side view showing a pallet tilting apparatus according to another embodiment of the present invention

9 shows an overall process according to an embodiment of the present invention

10 is a conceptual diagram illustrating a system arrangement according to an embodiment of the present invention.

11 is a conceptual diagram showing a conventional assembly process

<Explanation of symbols for main parts of the drawings>

1: Diffusion Sheet

2: pallet

3: case

4: automatic diffusion sheet

5: Diffusion sheet automatic alignment assembly device

6: case tilting device

7: pallet tilting device

     11: first adsorption pad 12: second adsorption pad

     13 clean device 14 diffusion sheet inlet

     15: air float plate 16: third adsorption pad

     17: pallet mount 18: detection sensor

     19: positioning mechanism 20: transfer rail

     21: creeper 22: automatic checker

     23: fastener 81: transfer conveyor

     82: Pallet 83: Worker

The present invention relates to an automatic assembly process of a backlight unit, which will be described in more detail, an automatic assembly process of a backlight unit developed to produce a backlight unit by automated equipment to increase the production rate and greatly reduce the number of working personnel. It is about.

Backlight is a major component of TFT LCD, and it is a plate-shaped device for effectively radiating the light emitted from the light source.It is sensitive to the distortion, or disturbance, of the light source. In addition, the assembly is made in a working environment that completely blocks not only the assembly precision but also various fine dust and stains from the outside.

FIG. 11 is a conceptual view showing a conventional assembly process, which consists of a series of processes in which a person directly assembles and inspects a product by mounting a product on a pallet 82 located in a transfer conveyor 81.

In this figure, the worker 83 needs a large number of people up to several tens.

However, it is preferable that the above working environment of the backlight completely blocks all kinds of fine dust and stains, but the process of manual work is not only in terms of work efficiency, but also the foreign material defect rate reaches 40% due to the increase of pollution sources by workers. .

This is the biggest problem with manual work, transportation work, static electricity and unstandardized work.

In particular, during the assembly of the diffusion sheet, the worker puts the diffusion sheet into the clean device one by one to clean the foreign materials, and when it is loaded, the worker reassembles one by one. At this time, the diffusion sheet is exposed to the foreign material after passing through the clean device. Is most likely to occur.

The present invention was developed to solve the above problems, the object of which is to develop an automated backlight unit production process.

It also saves manpower by minimizing work that requires workers.

In addition, to prevent contamination by manpower in the clean device supply operation of the diffusion play.

In addition, in the process of assembling the diffusion sheet in the case to prevent contamination by foreign matters and to enable accurate automatic assembly.

In addition, the task of connecting the power to the case is to be done semi-automatically.

In addition, the tilting of the pallet is performed automatically when the product is inspected for startup.

In order to achieve the above object, the present invention provides an assembly process of a backlight unit including a process of assembling and inspecting a component constituting the backlight;

A diffusion sheet adsorption step of vacuum adsorbing and lifting the diffusion sheet constituting the backlight by first and second adsorption pads;

A conveying step of allowing the adsorbed diffusion sheet to enter the rear end of the diffusion sheet inlet of the clean device;

The foreign material removal step of removing the foreign matter entering the diffusion sheet at the same speed as the diffusion sheet is transported by a clean device while the suction force of the first suction pad is eliminated and the suction force of the second suction pad is maintained. It is characterized in that it comprises a diffusion sheet automatic feeding process made.

In addition, the first adsorption pad is characterized in that it is set slightly higher than the second adsorption pad.

In addition, when the diffusion sheet is discharged from the clean device, the air floating step of being deposited on the air float plate to slightly float the diffusion sheet by the air injection;

A diffusion sheet alignment step of inclining the air floating plate to one side to align the upper diffusion sheet to a predetermined position by sliding;

A transfer step of lifting the aligned diffusion sheet by a third suction pad and transferring the pallet to an upper engagement position of the pallet mount;

A position control step of transferring a detection sensor between the diffusion sheet and the corresponding coupling portion of the case at the coupling position to check both coupling positions and controlling the diffusion sheet adsorbed by the positioning mechanism to the correct coupling position;

It is characterized in that it further comprises a diffusion sheet automatic alignment assembling process consisting of an assembly step of lowering and coupling the diffusion sheet and dissipation of the suction force of the third suction pad.

In addition, when the pallet to be conveyed along the conveying rail reaches a predetermined position, the pallet fixing step for fixing the fixtures adjacent to both sides of the lower side of the pallet in close contact with both sides of the pallet;

A case tilting step in which an operator inclines the front creeper between the pallet and the mounted case, and only the case is automatically inclined at a predetermined inclination;

A power connection step of connecting power to a power connection portion formed at a bottom of the case;

A case seating step of seating the case on the pallet again;

The case seated on the pallet is characterized in that it further comprises a first inspection process consisting of an inspection step of inspecting by an automatic inspector along the transport rail.

In addition, the pallet tilting step of lifting the rear bottom of the pallet by the button operation of the operator when the pallet reaches a predetermined position;

An inspection step for determining whether the assembled backlight seated on the pallet is abnormal or not;

A second inspection process comprising a pallet seating step of seating the tilted pallet back on the transfer rail is further included.

In addition, before the automatic diffusion sheet assembly assembly process, the operator includes a case assembly process for mounting the outer case of the backlight when the pallet designed for the automation device is moved by the transfer rail;

Between screw automatic alignment assembly process and the first inspection process includes a screw fastening process to complete the assembly by an automated fastener when the operator finishes with the uppermost part of the case;

After the first and the second inspection process, the pallet is separated from the back light unit that has been assembled and inspected, and the discharge process and the discharged pallet are put into the first case of the pallet to the bottom of the transfer rail for transferring the pallet during a series of processes. The pallet transfer process to transfer to the assembly process is characterized in that it is further formed.

Accordingly, the configuration of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce.

1 is a block diagram showing an automatic diffusion sheet supplying process according to an embodiment of the present invention, Figure 2 is a side view showing an automatic supplying device of a diffusion sheet according to an embodiment of the present invention, the components constituting the backlight In the assembling process of the backlight unit including the process of assembling and inspecting;

A diffusion sheet adsorption step of vacuum adsorbing and lifting the diffusion sheet 1 constituting the backlight by the first and second adsorption pads 11 and 12;

A conveying step of allowing the adsorbed diffusion sheet 1 to enter the rear end of the diffusion sheet inlet 14 of the clean device 13;

The suction force of the first suction pad 11 is dissipated and the suction force of the second suction pad 12 is maintained while the suction force of the second suction pad 11 is maintained and diffused at the same speed as the diffusion sheet 1 is transported by the clean device 13. The sheet 1 has been shown to include a diffusion sheet automatic supply process consisting of a foreign material removal step to remove the foreign matter entering.

When the second suction pad 12 is engaged with a clean roller formed at one side of the thin diffusion sheet 1 inside the clean device 13, the second suction pad 12 serves to safely insert the other side while preventing the other side from being struck by its own weight. .

This automatic feeding method has the effect of preventing foreign matters from occurring in the diffusion sheet 1 by hand and also reducing defects in a standardized operation.

In this case, the first suction pad 11 is set slightly higher than the second suction pad 12 so that the diffusion sheet 1 is introduced into the clean device 13 and the suction force of the first suction pad 11 is dissipated. When it is easy to separate from the diffusion sheet (1).

That is, when the same height, even if the suction force of the first suction pad 11 is extinguished, the upper surface of the diffusion sheet (1) is in contact with the second suction pad 12 may be in close contact with the transfer friction occurs In order to prevent this, it is located in the upper part of several mm, and even in this configuration, the first and second adsorption pads 11 and 12 are manufactured by an elastic material, so the first diffusion sheet 1 is picked up. There will be no problem with the operation.

3 is a block diagram illustrating a process for automatically aligning diffusion sheets according to another embodiment of the present invention, and FIG. 4 is a side view illustrating an apparatus for automatically aligning diffusion sheets according to another embodiment of the present invention. An air flotation step of being deposited on the air floatation plate 15 to allow the diffusion sheet to float slightly by air injection when the diffusion sheet 1 starts to be discharged;

A diffusion sheet alignment step of tilting the air float plate 15 to one side to align the upper diffusion sheet 1 at a predetermined position while sliding;

A conveying step of lifting by the third suction pad 16 to the aligned diffusion sheet 1 and transferring the pallet to the upper engagement position of the pallet 2 of the pallet mount 17;

Diffusion sheet (1) adsorbed by the positioning mechanism (19) is transferred to the detection sensor 18 between the respective mating portion of the diffusion sheet (1) and the case (3) in the engagement position to confirm the engagement position on both sides Position control step of controlling to come to the correct coupling position;

It was shown that the diffusion sheet automatic alignment assembly process consisting of the assembling step of lowering and bonding the diffusion sheet 1 and extinguish the suction force of the third adsorption pad 16 is included.

By enabling such automatic alignment and assembly, it is possible not only to prevent foreign matter contamination by hand, but also to mount such a device in a closed body to block external foreign matter.

At this time, the air float plate 15 is configured to prevent the bottom surface of the diffusion sheet (1) passing through the clean device 13 for removing foreign matters to the bottom to prevent contact with foreign matters such as dust and the like air spray nozzles As the air injected from passes through the porous air flotation pad, the overall air pressure that is not partially concentrated is acted on, so that the diffusion sheet 1 is maintained at a predetermined height.

This means that when the diffusion sheet 1 is passed through the conventional clean device 13 sequentially stacked, it is a means to significantly prevent contamination by foreign matter compared to the process of moving and assembling the worker.

Figure 5 is a block diagram showing a first inspection process according to another embodiment of the present invention, Figure 6 is a side view showing a case tilting device according to another embodiment of the present invention, conveyed along the conveying rail 20 When the pallet 2 reaches a predetermined position, a pallet fixing step of fixing the fasteners 21 adjacent to both lower sides of the pallet 2 to be in close contact with both sides of the pallet 2;

A case tilting step in which an operator pushes the creeper 21 on the front side between the pallet 2 and the mounted case 3, and only the case 3 is automatically inclined at a predetermined inclination;

A power connection step of connecting power to a power connection portion formed on the bottom of the case 3;

A case seating step of seating the case 3 on the pallet 2 again;

The case 3 seated on the pallet 2 has been shown to further include a first inspection process consisting of an inspection step in which the case 3 is inspected by the automatic inspector 22 along the transfer rail 20.

This is to secure power and increase the efficiency of work because it is extremely difficult to connect the power supply by manpower. It improves the work speed and prevents further damage to the product during work because there is no direct contact with the backlight unit. Done.

7 is a block diagram showing a second inspection process according to another embodiment of the present invention, Figure 8 is a side view showing a pallet tilting apparatus according to another embodiment of the present invention, the pallet (2) in a predetermined position Pallet tilting step of lifting the rear bottom of the pallet (2) by the button operation of the operator when reaching;

An inspection step for determining whether or not abnormal operation of the assembled backlight seated on the pallet (2) is performed;

It was further shown that a second inspection procedure consisting of a pallet seating step of seating the tilted pallet 2 back on the conveying rail 20 was included.

Since this operation is automatic, the operator simply operates the operation switch to improve the work efficiency. Also, by lifting the pallet together with the case, the user does not come in direct contact with the pallet. Will be prevented.

9 is a block diagram showing an overall process according to an embodiment of the present invention, Figure 10 is a conceptual diagram showing a system arrangement according to an embodiment of the present invention, the operator prior to the automatic sheet assembly assembly process of the backlight A case assembly process for mounting the outer case when the pallet designed for the automation device is moved by the transfer rail;

Between the automatic diffusion sheet assembly process and the first inspection process, the screw fastening process to complete the assembly by the automated fastener 23 when the operator finishes with the uppermost part of the case;

After the first and the second inspection process, the pallet is separated from the back light unit that has been assembled and inspected. It was shown that the pallet transfer process to the assembly process is formed additionally.

This series of processes represents the entire backlight manufacturing process from the initial preparation stage to the assembly and inspection, and the workforce is drastically reduced since only a minimum of 5 to 6 workers are involved, as compared to most conventional manual processes. The worker's work directly touching the product and the parts to be assembled is also minimized, which drastically reduces foreign material contamination by the worker.

Therefore, the contamination caused by foreign substances with the defective rate of 40% will be lowered to less than 1%.

 The pallet is finally discharged and the pallet is transported to the bottom of the transfer line that transports the pallet during a series of processes. Done.

In addition, in the drawing, four apparatuses used in the diffusion sheet supplying process are set, wherein three units supply the diffusion sheet and one unit supply the diffusion plate having a relatively thicker thickness than the diffusion sheet.

As described above, the present invention provides an automated backlight production process to increase the production rate.

It also has the effect of reducing manpower consumption.

In addition, there is an effect of reducing the defect rate of the device by minimizing additional contamination in the process by the operator.

In addition, the diffusion sheet is automatically made by a vacuum adsorption pad which prevents marks when the diffusion sheet is inserted into the clean device, thereby preventing exposure of foreign substances, thereby reducing defects of the product due to foreign substances caused by dust.

In addition, by automatically aligning the diffuser frame that passed through the clean device and assembling it into the backlight unit case, it prevents foreign substances by hand and foreign substances attached in the unsmooth process, which is not connected, thereby reducing the defective rate of the product and thus significantly reducing the manufacturing cost. It has the effect of reducing.

In addition, there is an effect of improving the work speed and efficiency by performing the inverted tilting work even if the user does not lift the case directly.

In addition, the operation of tilting the backlight unit forward for inspection of the product is performed by a simple switch operation of the operator, thereby reducing the worker's copper wire and reducing fatigue, thereby improving work efficiency.

Claims (6)

In the assembling process of the backlight unit comprising the step of assembling and inspecting the components constituting the backlight, A case assembly process of mounting the outer case of the backlight; Automatic diffusion sheet supplying the diffusion sheet and supplying the diffusion sheet to a clean device; A diffusion sheet automatic alignment assembly process of assembling the backlight unit by assembling the diffusion sheet with the outer case; Screw fastening process for completing the assembly of the backlight unit by a fastener; A first inspection step of inspecting the case by an automatic inspector; And A second inspection process for determining whether the backlight unit is abnormally operated; The diffusion sheet automatic supply process, A diffusion sheet adsorption step of vacuum adsorbing and lifting the diffusion sheet 1 constituting the backlight by the first and second adsorption pads 11 and 12; A conveying step of allowing the adsorbed diffusion sheet 1 to enter the rear end of the diffusion sheet inlet 14 of the clean device 13; The suction force of the first suction pad 11 is dissipated and the suction force of the second suction pad 12 is maintained while the suction force of the second suction pad 12 is diffused at the same speed as that of the diffusion sheet 1 by the clean device 13. Automatic assembly process of the backlight unit, characterized in that it comprises a diffusion sheet automatic supply process consisting of a foreign material removal step to remove the foreign matter entering the sheet (1). 2. The automatic assembly process of claim 1, wherein the first suction pad is set slightly higher than the second suction pad. 12. The method of claim 1, wherein the automatic diffusion sheet assembly process, An air flotation step of being deposited on the air floatation plate 15 to allow the diffusion sheet to float slightly by air injection when the diffusion sheet 1 starts to be discharged from the clean device 13; A diffusion sheet alignment step of tilting the air float plate 15 to one side to align the upper diffusion sheet 1 at a predetermined position while sliding; A conveying step of lifting by the third suction pad 16 to the aligned diffusion sheet 1 and transferring the pallet to the upper engagement position of the pallet 2 of the pallet mount 17; Diffusion sheet (1) adsorbed by the positioning mechanism (19) is transferred to the detection sensor 18 between the respective mating portion of the diffusion sheet (1) and the case (3) in the engagement position to confirm the engagement position on both sides Position control step of controlling to come to the correct coupling position; Automatic assembly process of the backlight unit, characterized in that consisting of the assembling step of lowering the diffusion sheet (1) to combine and extinguish the suction force of the third suction pad (16). The method of claim 1, wherein the first inspection process, When the pallet 2 conveyed along the conveying rail 20 reaches a predetermined position, the fasteners 21 adjacent to the lower sides of the pallet 2 are fixed to both sides of the pallet 2 to be fixed. A pallet fixing step; A case tilting step in which an operator pushes the creeper 21 on the front side between the pallet 2 and the mounted case 3, and only the case 3 is automatically inclined at a predetermined inclination; A power connection step of connecting power to a power connection portion formed on the bottom of the case 3; A case seating step of seating the case 3 on the pallet 2 again; Automatic assembly process of the backlight unit, characterized in that the case (3) seated on the pallet (2) consists of an inspection step of inspecting by the automatic inspection machine 22 along the transfer rail (20). The method of claim 1, wherein the second inspection process, Pallet tilting step of lifting the rear bottom surface of the pallet (2) by the button operation of the operator when the pallet (2) reaches a predetermined position; An inspection step for determining whether or not abnormal operation of the assembled backlight seated on the pallet (2) is performed; Automatic assembly process of the backlight unit, characterized in that consisting of a pallet seating step of seating the tilted pallet (2) back to the transport rail (20). The method according to any one of claims 1 to 5, The case assembly process, prior to the automatic diffusion sheet assembly assembly process, the operator mounts the outer case of the backlight when the pallet designed for the automation device is moved by the transfer rail; The screw fastening process is completed by the automated fastener (23) when finishing the uppermost part of the case by the operator between the automatic diffusion sheet assembly process and the first inspection process; After the first and second inspection process, the pallet is separated from the back light unit, which is assembled and inspected, and the discharge process and the discharged pallet are put into the bottom of the transfer rail for transferring the pallet during a series of processes. Automatic assembly process of the backlight unit, characterized in that it further comprises a pallet transfer process to transfer the case assembly process.

Images