JP6351438B2 - Plate workpiece cleaning device - Google Patents

Description

  The present invention relates to a plate work cleaning device that cleans foreign matter adhering to a plate work in an assembly process of an electronic assembly product including the plate work.

  Liquid crystal displays (hereinafter referred to as “LCDs”) are widely used as various display monitors such as liquid crystal televisions, mobile phones, personal computer monitors, car navigation systems, and POS terminals. In addition to a transmissive liquid crystal panel (hereinafter referred to as “panel”), a transmissive LCD requires a backlight unit including a light source. In recent years, with the increase in size and definition of LCDs, high display quality is required.

  In the LCD manufacturing process (module assembly process), when an LCD module is formed by combining a panel and a backlight unit, foreign matter adhering to the backlight unit is cleaned in advance, and then module assembly work is performed. If a foreign object is present between the panel and the backlight unit, when the LCD is displayed, it is visually recognized as a missing display dot, resulting in a display defect. Therefore, it is extremely important to reduce the foreign object.

  In order to clean the foreign matter adhering to the backlight unit, a manual cleaning method is generally used immediately before combining the panel and the backlight unit using a suction brushing method used in a household vacuum cleaner or the like. However, the work method and work quality depend heavily on the operator's senses, and there is a problem that foreign matter residue due to work variation occurs, resulting in poor quality.

  In addition, the backlight unit does not have a simple flat shape, and has a structure having a complex shaped frame (such as a mold frame and a rear frame) around the flat plate-like member (optical sheet). This makes cleaning more difficult.

  Furthermore, some optical sheets, which are components of the backlight unit, tend to be scratched by brushing, and foreign substances cannot be completely removed by a single cleaning method or cleaning method. There is a problem that foreign matter remains, resulting in poor quality.

  Therefore, various devices have been proposed to solve such problems. For example, Patent Document 1 discloses a foreign matter removing apparatus that includes a plurality of cleaning rollers and moving means. The plurality of cleaning rollers are arranged side by side so that each rotation center axis extends in a direction substantially perpendicular to the cleaning direction of the object to be cleaned in plan view, and each cleaning peripheral surface is provided on the surface to be cleaned of the object to be cleaned. Rotates while in contact, and adheres foreign matter adhering to the surface to be cleaned to the cleaning peripheral surface. The moving means changes the positions of the plurality of cleaning rollers independently of each other so that each region on the surface to be cleaned contacts at least one of the cleaning peripheral surfaces of the plurality of cleaning rollers.

  For example, Patent Document 2 discloses a sheet-like member cleaning device for cleaning a side surface of a sheet-like member. The sheet-like member cleaning device includes a foreign matter removing unit having a planar removal surface having adhesiveness, and the removal surface of the foreign matter removing unit is moved in a state substantially parallel to the side surface of the sheet-like member. Is brought into contact with the side surface of the sheet-like member to clean the side surface of the sheet-like member.

JP 2001-87729 A JP 2010-22897 A

  However, in the case of the apparatus described in Patent Document 1, when cleaning a workpiece having a frame having a complicated shape around a plate-like member such as a backlight unit, the cleaning peripheral surface of the cleaning roller is above the frame. There is a problem that the foreign matter cannot be removed.

  Further, in the case of the apparatus described in Patent Document 2, as in the case of the apparatus described in Patent Document 1, a work having a frame having a complicated shape around a plate-like member such as a backlight unit is cleaned. In this case, there is a problem that the removal surface runs on the frame and the foreign matter cannot be removed.

  Then, an object of this invention is to provide the technique which can remove a foreign material effectively also to the plate-shaped workpiece | work which has a complicated shape.

The plate-shaped workpiece cleaning device according to the present invention is a plate-shaped workpiece cleaning device that cleans the plate-shaped workpiece in an assembly process of an electronic assembly product including the plate-shaped workpiece, and removes foreign matters attached to the plate-shaped workpiece. A plate-like workpiece cleaning mechanism; and a multi-axis robot having a mount portion on which the plate-like workpiece cleaning mechanism is mounted, and movably driving the mount portion , wherein the electronic assembly product is a liquid crystal display, The plate-like workpiece is a backlight unit, and the plate-like workpiece cleaning mechanism has three cleaning methods of a suction brushing method, an adhesive roller method, and an air injection method, and at least one of these three cleaning methods is selected. It is used for cleaning .

According to the present invention, the plate-like workpiece cleaning device has a plate-like workpiece cleaning mechanism that removes foreign matters adhering to the plate-like workpiece, and a mount portion on which the plate-like workpiece cleaning mechanism is mounted, and the mount portion is movable. The electronic assembly product is a liquid crystal display, and the plate-like workpiece is a backlight unit. Thus, for the backlight unit is a plate-shaped workpiece, a plate-like for the workpiece cleaning mechanism can perform a flexible and accurate operation, the foreign matter to the backlight unit effectively with complex shape Can be removed. The plate-like workpiece cleaning mechanism has three cleaning methods, ie, a suction brushing method, an adhesive roller method, and an air jet method, and the backlight unit is used for cleaning by selectively using at least one of these three cleaning methods. The backlight unit can be more reliably cleaned by performing cleaning using an optimum cleaning method locally and individually in accordance with the shape characteristics of the backlight unit.

It is a top view of the backlight unit cleaning apparatus which concerns on embodiment. It is a side view of a backlight unit cleaning device. It is a top view of a backlight unit cleaning mechanism. It is a side view of a backlight unit cleaning mechanism. It is the perspective view which showed typically the backlight unit cleaning apparatus which concerns on a premise technique.

<Prerequisite technology>
First, the backlight unit cleaning device according to the base technology using the suction brushing method will be briefly described. FIG. 5 is a perspective view schematically showing a backlight unit cleaning device according to the base technology.

  As shown in FIG. 5, the backlight unit cleaning device according to the base technology is a device for cleaning the backlight unit 2 and includes a suction brush unit 200. The backlight unit 2 includes an optical sheet 3, a mold frame 4, a rear frame 5, a light guide plate (not shown), a lamp light source (not shown), and the like.

  The suction brush unit 200 includes a brush 201 and a brush holder 202. The brush holder 202 has a passage for allowing air to pass through, and is connected in series to a suction hose, a dust collection filter, and a suction power source (a suction blower, etc.) (not shown). The brush holder 202 has a structure in which foreign matter is sucked and removed using a suction force from a suction power source, and the foreign matter is trapped by a dust collection filter.

  Further, the brush 201 is arranged around the air suction port of the brush holder 202, and has a structure that makes the foreign matter stand up by bringing the brush 201 into contact with the foreign matter and brushing, thereby facilitating suction and removal of the foreign matter. Yes. When the backlight unit 2 is manually cleaned using the suction brush unit 200, brushing is performed by bringing the brush 201 into contact with the cleaning surface of the backlight unit 2 while moving the suction brush unit 200 by manual handling of the operator. By doing this, the foreign matter is lifted up and removed by suction.

  However, the method of applying the brush 201 to the cleaning surface of the backlight unit 2 (brush pressing amount, pressing angle, moving speed, or operation trajectory, etc.) largely depends on the operator's sense and cannot be quantitatively controlled. In some cases, foreign matter residue may occur due to work variations.

  Further, since the mold frame 4 and the rear frame 5 have a complicated three-dimensional shape rather than a flat shape like the optical sheet 3, cleaning is made more difficult, for example, the brush 201 is difficult to hit evenly. Further, the optical sheet 3 used in the backlight unit 2 is easily scratched by brushing, which makes cleaning difficult. When the LCD module is formed by combining the panel and the backlight unit 2 after cleaning the backlight unit 2, the LCD is displayed if foreign matter remains in the backlight unit 2 or there is a scratch on the optical sheet 3. In this case, there is a problem of poor quality such as a display defect that is visually recognized as a missing display dot or a display scratch.

<Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a backlight unit cleaning device 1 according to the embodiment, and FIG. 2 is a side view of the backlight unit cleaning device 1. In the following description, the backlight unit 2 is omitted because it overlaps with the description of the base technology.

  As shown in FIGS. 1 and 2, the backlight unit cleaning device 1 (plate-shaped workpiece cleaning device) is a device that cleans the backlight unit 2 that is a plate-shaped workpiece in an assembly process of a liquid crystal display that is an electronic assembly product. is there. The backlight unit cleaning apparatus 1 includes a backlight unit cleaning mechanism 15 (plate-shaped workpiece cleaning mechanism), a multi-axis robot 10, a base plate 20, a housing frame 30, a backlight set top plate 40, an ionizer 60, and an operation panel unit. 70, a pneumatic equipment unit 80 and a control panel unit 90.

  The multi-axis robot 10 is, for example, a three-axis orthogonal robot having three axes of an X axis 11, a Y axis 12, and a Z axis 13, and is fixed to and supported by a base plate 20. The housing frame 30 fixes the base plate 20, the backlight set top plate 40, the transfer roller unit 50 of the backlight unit cleaning mechanism 15, the ionizer 60, the operation panel unit 70, the pneumatic device unit 80, and the control panel unit 90. In addition to supporting, caster feet, a cover, and other device accessories (not shown) are fixed and supported. That is, the housing frame 30 forms the skeleton of the backlight unit cleaning device 1 with the entire housing frame 30.

  The multi-axis robot 10 includes a mount unit 14 on which a backlight unit cleaning mechanism 15 can be mounted. The backlight unit cleaning mechanism 15 is connected and fixed to the mount portion 14 of the multi-axis robot 10. The operation panel unit 70 includes a touch panel (not shown), various operation switches, and the like, and can perform various operations and recipe settings of the backlight unit cleaning device 1. The recipe setting of the backlight unit cleaning device 1 will be described later.

  The pneumatic device unit 80 includes various pneumatic control devices such as a regulator and a solenoid valve (not shown), and is connected to various pneumatic driving devices (not shown) via an air pipe (not shown). The control panel 90 includes various electrical components for controlling operations of the power supply device and the backlight unit cleaning device 1 (not shown).

  In the base technology, since manual cleaning is performed by an operator, foreign matter residue due to work variation may occur.

  In order to solve this problem, as shown in FIGS. 1 and 2, the backlight unit cleaning device 1 includes a backlight unit cleaning mechanism 15 that removes foreign matters attached to the backlight unit 2, and a backlight unit cleaning mechanism. And a multi-axis robot 10 that has a mount unit 14 on which 15 is mounted and that drives the mount unit 14 to move freely. Therefore, since the backlight unit cleaning mechanism 15 can be flexibly and highly accurately operated with respect to the backlight unit 2, foreign matter can be effectively removed from the backlight unit 2 having a complicated shape. be able to. As a result, the yield of the backlight unit 2 can be improved.

  Next, details of the backlight unit cleaning mechanism 15 will be described. FIG. 3 is a plan view of the backlight unit cleaning mechanism 15, and FIG. 4 is a side view of the backlight unit cleaning mechanism 15. 3 and 4, the transfer roller unit 50 is not shown.

  As shown in FIGS. 3 and 4, the backlight unit cleaning mechanism 15 includes a suction & injection unit 180 and an adhesive roller unit 190. The backlight unit cleaning mechanism 15 is configured to be cleaned using a suction brushing method, an adhesive roller method, or an air injection method, and the suction & injection unit 180 is used for a suction brushing method or an air injection method. The unit 190 is used for an adhesive roller system.

  The suction & injection unit 180 includes a flocking brush 100, an air suction port 110, an air injection port 120, a brush flocking base material 130, a brush unit mounting base plate 140, a spot ionizer 160, and an air cylinder 170. The adhesive roller unit 190 includes an adhesive roller 150.

  The flocking brush 100 is flocked and fixed to the brush flocking base material 130. The brush flocking base material 130 includes an air suction port 110 through which air passes. The brush unit mounting base plate 140 includes a passage for allowing air to pass therethrough and an air injection port 120. A passage for allowing air to pass through the brush unit mounting base plate 140 is connected in series to a suction hose, a dust collection filter, and a suction power source (for example, a suction blower) (not shown), and the suction force by the suction power source is used. It has a structure that removes foreign matter by suction and traps the foreign matter with a dust collection filter.

  The air injection port 120 of the brush unit mounting base plate 140 is connected in series to an air pipe (not shown), a spot ionizer 160, an electromagnetic valve (not shown), and an air supply source, and foreign matter is generated using air pressure from the air supply source. It is structured to blow away and remove. The brush unit mounting base plate 140 is connected to a brush unit side surface base plate (not shown), the brush unit side surface base plate is connected to a brush unit bottom surface base plate (not shown), and the brush unit bottom surface base plate is connected to the air cylinder 170. It is connected. The suction & injection unit 180 is composed of the entire connecting parts from the flocking brush 100 to the air cylinder 170.

  The adhesive roller 150 is formed so as to be concentric and cylindrical with a rotating shaft shaft (not shown). In addition, the adhesive surface of the adhesive roller 150 is brought into contact with the foreign matter so that the foreign matter is adhered and removed. The rotating shaft is supported at both ends by a bearing and a bearing holder (not shown) and has a structure capable of rotating. The bearing holder is connected to a bearing holder mounting base plate (not shown), and the bearing holder mounting base plate is connected to an adhesive roller unit side surface base plate (not shown). The adhesive roller unit side base plate is connected to an adhesive roller unit rear base plate (not shown). The adhesive roller unit 190 is composed of the entire connecting parts from the adhesive roller 150 to the adhesive roller unit rear base plate.

  In the base technology, since the cleaning is performed only by the suction brushing method using the suction brush unit 200, the backlight unit 2 having a complicated shape is cleaned using a local and optimum cleaning method. This may not be possible, and foreign matter residue may occur.

  In order to solve this problem, as shown in FIGS. 3 and 4, the backlight unit cleaning mechanism 15 performs cleaning using a suction brushing method, an adhesive roller method, or an air jet method. Thus, since the backlight unit cleaning apparatus 1 can perform cleaning using a plurality of cleaning methods having different principles, the optimal cleaning method is locally and individually adapted to the shape characteristics of the backlight unit 2. The backlight unit 2 can be more reliably cleaned by performing the cleaning using.

  Next, details of a plurality of cleaning methods (suction brushing method / adhesive roller method / air injection method) having different principles will be described. In the cleaning method A (suction brushing method), in addition to flat portions such as the optical sheet 3 (see FIG. 5) in the backlight unit 2, the mold frame 4 (see FIG. 5), the rear frame 5 (see FIG. 5), etc. Used for cleaning uneven parts.

  The cleaning method B (adhesive roller method) is used for cleaning flat portions such as the optical sheet 3 in the backlight unit 2. Cleaning method C (air injection method) is sandwiched between the optical sheet 3 and the mold frame 4, and between the mold frame 4 and the rear frame 5 in addition to the flat shape portion and the uneven shape portion in the backlight unit 2. Used to clean the gaps.

  In the above description, the backlight unit cleaning device 1 has been described as selecting and cleaning the optimum cleaning method according to the shape characteristics of the backlight unit 2 from a plurality of cleaning methods having different principles. The backlight unit cleaning device 1 is a more optimal cleaning method, particularly for the uneven shape portion of the backlight unit 2 for the cleaning method A (suction brushing method) and for the flat shape portion of the backlight unit 2. Cleaning method B (adhesive roller method), and the cleaning method C (air injection method) is used for the gap between the flat and uneven parts of the backlight unit 2, and the optimal cleaning method is applied locally and individually. By using and cleaning, the backlight unit 2 can be more reliably cleaned.

  Next, cleaning by the suction brushing method using the suction & injection unit 180 will be described in detail. As shown in FIGS. 3 and 4, the suction & injection unit 180 of the backlight unit cleaning mechanism 15 includes a suction brush portion 95 used in the suction brushing method. The suction brush unit 95 includes a brush-planted base material 130 (conductive substrate) provided with an air suction port 110 (suction port), and a hair-planting brush 100 (conductive brush) disposed so as to surround the air suction port 110. It has.

  The flocking brush 100 and the brush flocking base material 130 are made of a conductive material. The brush flocking base material 130 is provided with an air suction port 110 serving as an air passage, and the flocking brush 100 is implanted and disposed so as to surround the air suction port 110. The flocking brush 100 and the brush flocking base material 130 are made of a conductive material, and are grounded by being connected to various conductive parts (not shown) constituting the backlight unit cleaning device 1. As a result, when the brushed brush 100 is brought into contact with the electrostatically charged backlight unit 2 for brushing, not only foreign matter can be removed by brushing, but also the electrostatically charged charge can be grounded and discharged. The removability of adhering foreign matter is improved, and the backlight unit 2 can be more reliably cleaned.

  Further, by placing the flocking brush 100 so as to surround the air suction port 110, the foreign matter blown off by brushing is sucked in the direction of the air suction port 110 and scattered around the backlight unit 2 and reattached. In addition, it is possible to prevent foreign matter from scattering and adhering to the backlight unit cleaning device 1 and contaminating the backlight unit cleaning device 1.

  Next, cleaning by the air injection method using the suction & injection unit 180 will be described in detail. The backlight unit cleaning mechanism 15 further includes an air injection port 120 used in the air injection method. The air injection port 120 is provided in the brush unit mounting base plate 140, and is disposed at the center of the air suction port 110 in the brush flocking base material 130. Since the air injection port 120 is arranged at the center of the air suction port 110, the foreign matter blown off by the air pressure injected from the air injection port 120 is sucked from the air suction port 110 without being scattered around, It is possible to prevent re-deposition and contamination inside the backlight unit 2 and the backlight unit cleaning device 1.

  Next, the air injected from the air injection port 120 will be described. As shown in FIGS. 3 and 4, the air injection port 120 provided in the brush unit mounting base plate 140 is connected in series to an air pipe (not shown), a spot ionizer 160, an electromagnetic valve (not shown), and an air supply source. . Ions generated by the spot ionizer 160 are carried along with air supplied from an air supply source, and are ejected from the air injection port 120 as ionized air having a charge removal capability. In addition to the effect of blowing off and removing foreign matter by air pressure, the air jetted from the air injection port 120 is ionized air having a charge removal capability, and in addition to being charged and attached to the backlight unit 2 itself and the backlight unit 2 It is possible to neutralize the foreign matter. Thereby, the backlight unit 2 can be more reliably cleaned.

  Next, cleaning by the adhesive roller method using the adhesive roller unit 190 will be described in detail. The backlight unit cleaning mechanism 15 includes a transfer roller unit 50 having a transfer roller 51 for transferring and removing foreign matter attached to the adhesive roller 150 in addition to the adhesive roller unit 190 having the adhesive roller 150 used in the adhesive roller method. It has.

  The transfer roller unit 50 includes a transfer roller 51, a rotation shaft (not shown), a bearing, a bearing holder, a coupling, and a motor. The transfer roller 51 is formed to be concentric and cylindrical with the rotation shaft. Further, the outer peripheral surface of the transfer roller 51 has a stronger adhesive strength than the adhesive surface of the adhesive roller 150, and the outer peripheral surface of the transfer roller 51 is brought into contact with a foreign substance attached to the adhesive surface of the adhesive roller 150. The foreign material is peeled and removed from the adhesive surface of the roller 150. The rotating shaft is supported at both ends by a bearing and a bearing holder, and is connected to a motor via a coupling so as to be able to rotate. Here, the adhesive surface of the adhesive roller 150 is the outer peripheral surface of the adhesive roller 150.

  Since the backlight unit cleaning mechanism 15 includes an adhesive roller 150 used in an adhesive roller system and a transfer roller 51 for transferring and removing foreign matter attached to the adhesive roller 150, the foreign matter removed by the adhesive roller 150 is By transferring to the transfer roller 51 and removing it at regular intervals or at all times, it is possible to maintain the cleanliness of the adhesive surface of the adhesive roller 150 and to exhibit a stable foreign matter removing ability. In addition, since the foreign matter attached to the adhesive surface of the adhesive roller 150 is transferred to the transfer roller 51 and removed, the optical sheet of the backlight unit 2 is affected by the hard and sharp foreign matter attached to the adhesive surface of the adhesive roller 150. 3 (see FIG. 5) can be prevented from being scratched.

  Here, the adhesive roller 150 may be made of a material having an antistatic function. The adhesive roller 150 may have resistance to an organic solvent such as ethanol, and may have a function of recovering the adhesive force of the adhesive surface by cleaning with the organic solvent. Since the adhesive roller 150 is made of a material having an antistatic function, the backlight unit 2 can be cleaned without being charged, and foreign matter reattachment due to static electricity can be prevented. The adhesive roller 150 is resistant to an organic solvent such as ethanol and has a function of recovering the adhesive force of the adhesive surface by cleaning with the organic solvent. By cleaning the used adhesive roller 150, it becomes possible to exhibit a stable cleaning performance for a long period of time.

  Next, the support structure of the backlight unit 2 in the backlight unit cleaning device 1 will be described. The backlight unit cleaning device 1 further includes a backlight set top plate 40 (top plate) that holds the backlight unit 2, and the backlight set top plate 40 can be replaced according to the outer size of the backlight unit 2. It is configured and positioned with the cleaning surface of the backlight unit 2 facing downward.

  The backlight set top plate 40 has a structure for supporting the four corners of the backlight unit 2 and positioning the backlight unit 2. The backlight unit 2 is set on the backlight set top plate 40 with the cleaning surface facing downward. Further, the job can be changed by exchanging with a backlight set top plate 40 dedicated to the model according to the outer size of the backlight unit 2.

  The backlight unit cleaning device 1 further includes a backlight set top plate 40 that holds the backlight unit 2, and the backlight set top plate 40 is configured to be replaceable according to the outer size of the backlight unit 2, and The positioning is performed with the cleaning surface of the backlight unit 2 facing downward. Therefore, the foreign matter adhering to the cleaning surface of the backlight unit 2 is easily peeled off from the backlight unit 2 by its own weight, and the foreign matter removing property is improved. The foreign matter once peeled off does not fall on the cleaning surface of the backlight unit 2 and does not adhere again, so that the backlight unit 2 is not recontaminated. Further, by adopting a structure in which job change is possible for each outer size of the backlight unit 2, it is possible to deal with a wide variety of products, and accurate foreign matter removal can be performed regardless of the product type.

  Further, the backlight unit cleaning mechanism 15 is disposed below the backlight set top plate 40. For the backlight unit 2 set on the backlight set top plate 40, the backlight unit cleaning mechanism 15 is operated from the lower side to clean the cleaning surface of the backlight unit 2, and the effects described above ( The adhering foreign matter is easily peeled off from the backlight unit 2 due to its own weight, and the foreign matter removal performance is improved. In view of removing the foreign matter downward, the foreign matter is further optimized. It can be removed.

  As shown in FIG. 2, the backlight unit cleaning device 1 further includes an ionizer 60 that neutralizes foreign matter adhering to the backlight unit 2. The ionizer 60 is disposed inside the backlight unit cleaning device 1 and irradiates the cleaning surface of the backlight unit 2 with ionized air.

  Since the backlight unit cleaning device 1 further includes an ionizer 60 that neutralizes foreign matter adhering to the backlight unit 2, the backlight unit 2 is irradiated with ionized air on the cleaning surface of the backlight unit 2. It becomes possible to remove the charge that is charged and adhered to itself and the backlight unit 2, and the foreign matter removability is improved. Moreover, when the backlight unit 2 is cleaned using the backlight unit cleaning mechanism 15 by irradiating with ionized air, the flocking brush 100 and the adhesive roller 150 come into contact with and peel from the backlight unit 2. It is possible to suppress the peeling electrification generated due to this. Thereby, it can prevent that the backlight unit 2 after cleaning charges and a foreign material adheres again.

  Next, control of the multi-axis robot 10 will be described. The backlight unit cleaning device 1 further includes a programmable controller that controls the multi-axis robot 10 based on the recipe data. Here, the programmable controller is a PLC (Programmable Logic Controller), and the programmable controller is hereinafter referred to as a PLC.

  The multi-axis robot 10 is connected to a PLC such as a sequencer (not shown), and moves to a predetermined position according to recipe data input to the PLC via an external input device such as a touch panel disposed on the operation panel unit 70. The backlight unit cleaning mechanism 15 connected to the mount portion 14 of the multi-axis robot 10 is operated. Similarly, various drive devices associated with the backlight unit cleaning device 1 are also connected to the PLC and configured to operate according to recipe data. Recipe data for performing optimal cleaning is created by an operator, for example.

  Since the backlight unit cleaning device 1 further includes a PLC that controls the multi-axis robot 10 based on the recipe data, the operator is most suitable for the backlight unit 2 having a different external size or shape for each model. By creating recipe data for cleaning and operating the backlight unit cleaning mechanism 15, it is possible to perform more appropriate cleaning, and it is possible to easily change jobs according to instructions from an external input device such as a touch panel. Become.

  Although the case where the present invention is used for removing foreign matter adhered to a backlight unit for a liquid crystal display has been described as an example, a locally complicated three-dimensional process is performed in an assembly process of an electronic assembly product including a plate-like workpiece. The present invention can be commonly employed as long as it is a process for removing foreign matter adhering to a plate-like workpiece having a shape. When used for plate-like workpieces other than the backlight unit for liquid crystal displays, it is suitable for removing foreign substances, similar to the case of the backlight unit for liquid crystal displays, depending on the material or shape characteristics of the plate-like workpiece. It is good to set it to various conditions.

  In the present invention, the embodiments can be appropriately modified and omitted within the scope of the invention.

  DESCRIPTION OF SYMBOLS 1 Backlight unit cleaning apparatus, 2 Backlight unit, 10 Multi-axis type robot, 14 Mount part, 15 Backlight unit cleaning mechanism, 40 Backlight set top plate, 51 Transfer roller, 60 Ionizer, 90 Control board part, 95 Suction Brush part, 100 flocking brush, 110 air suction port, 120 air injection port, 130 brush flocking base material, 150 adhesive roller.

Claims (12)

A plate-shaped workpiece cleaning device for cleaning the plate-shaped workpiece in an assembly process of an electronic assembly product including the plate-shaped workpiece,
A plate-like workpiece cleaning mechanism for removing foreign matter adhering to the plate-like workpiece;
A multi-axis robot having a mount portion on which the plate-like workpiece cleaning mechanism is mounted, and movably driving the mount portion;
Equipped with a,
The electronic assembly product is a liquid crystal display;
The plate work is a backlight unit,
The plate-like workpiece cleaning mechanism includes three types of cleaning methods of a suction brushing method, an adhesive roller method, and an air jet method, and is cleaned by selectively using at least one of these three types of cleaning methods. Cleaning device. The suction brushing method is used for cleaning the uneven portion of the backlight unit,
The adhesive roller method is used for cleaning the flat shape portion of the backlight unit,
The air injection system, the backlight the said concave and convex portion of the unit is used for cleaning of the gap portion between the flat-shaped portion, the plate-shaped workpiece cleaning apparatus according to claim 1, wherein. The plate-like workpiece cleaning mechanism includes a suction brush portion used in the suction brushing method,
The suction brush unit includes a conductive substrate which suction opening is arranged, and a conductive brush disposed so as to surround the suction opening, the plate-shaped workpiece cleaning apparatus according to claim 1, wherein. The plate-like workpiece cleaning mechanism further includes an air injection port used in the air injection method,
The plate-like workpiece cleaning device according to claim 3 , wherein the air injection port is disposed at a central portion of the suction port. The plate-like workpiece cleaning device according to claim 4 , wherein the air injection port injects ionized air having a charge removal capability. The plate-shaped workpiece cleaning mechanism, the adhesive and the adhesive roller used in the roller method, and a transfer roller for removing transfer the foreign matter attached to the adhesive roller, the plate-shaped workpiece cleaning apparatus according to claim 1, wherein. The plate-like workpiece cleaning device according to claim 6 , wherein the adhesive roller has an antistatic function. The plate-like workpiece cleaning apparatus according to claim 7 , wherein the adhesive roller has resistance to an organic solvent and has a function of recovering adhesive force by cleaning with the organic solvent. Further comprising a top plate for holding the backlight unit,
The top plate, the backlight unit is replaceably configured in accordance with the size, and the positioned while downward cleaning surface of the backlight unit, the plate-shaped workpiece cleaning apparatus according to claim 1, wherein. The plate-like workpiece cleaning device according to claim 9 , wherein the plate-like workpiece cleaning mechanism is disposed below the top plate. Further comprising a plate-shaped workpiece cleaning apparatus according to claim 1, wherein the ionizer neutralizes foreign matter adhered to the backlight unit. Based on the recipe data, the multi-shaft further comprising a programmable controller for controlling the robot, the workpiece plate cleaning apparatus according to claim 1, wherein.

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