阅读说明：本技术 晶片盒包装设备 (Wafer box packaging equipment ) 是由 尹泰绸 李致福 于 2019-10-11 设计创作，主要内容包括：本发明提供一种用于包装晶片盒的设备,该设备包括：装载部,晶片盒装载至该装载部；附件检查部,该附件检查部构造成核查附连于晶片盒的密钥部并检查晶片盒的附件；第一标签附连部,该第一标签附连部构造成将第一标签附连至已完成附件检查的晶片盒；主薄膜包装部,该主薄膜包装部构造成根据密钥部接纳主薄膜并使用该主薄膜包装晶片盒；副薄膜包装部,该副薄膜包装部构造成根据密钥部接纳副薄膜并使用该副薄膜二次包装晶片盒；第二标签附连部,该第二标签附连部构造成将第二标签附连至已包装至晶片盒的副薄膜；以及卸载部,该卸载部构造成排出已完全包装的晶片盒。(The present invention provides an apparatus for packaging wafer boxes, the apparatus comprising: a loading part to which the wafer cassette is loaded; an attachment inspection portion configured to check a key portion attached to the wafer cassette and inspect an attachment of the wafer cassette; a first label attachment portion configured to attach a first label to the wafer cassette that has completed the attachment inspection; a main film wrapping portion configured to receive a main film according to the key portion and wrap the wafer cassette with the main film; a sub film wrapping part configured to receive a sub film according to the key part and secondarily wrap the wafer cassette using the sub film; a second label attachment portion configured to attach a second label to a secondary film that has been packaged to the wafer cassette; and an unloading section configured to discharge the completely packed wafer cassette.)

1. An apparatus for packaging wafer boxes, the apparatus comprising:

a loading part to which a wafer cassette is loaded;

an attachment inspection portion configured to check a key portion attached to the wafer cassette and inspect an attachment of the wafer cassette;

a first label attachment portion configured to attach a first label to the wafer cassette that has completed the attachment inspection;

a main film wrapping portion configured to receive a main film according to the key portion and wrap the wafer cassette with the main film;

a sub film wrapping part configured to receive a sub film according to the key part and secondarily wrap the wafer cassette using the sub film;

a second label attachment portion configured to attach a second label to the secondary film already packaged to the wafer cassette; and

an unloading section configured to discharge the wafer cassette that has been completely packaged.

2. The apparatus of claim 1, wherein the key section comprises at least one of a barcode and a Quick Response (QR) code.

3. The apparatus of claim 2, wherein the key section contains selection information on at least one of the main film, the first label, the sub-film, the second label, a packing direction, and a packing method according to a kind of the wafer cassette.

4. The apparatus of claim 3, wherein the accessory inspection portion comprises:

a platform for rotating and supporting the wafer cassette;

a camera configured to inspect the key portion attached to the wafer cassette and the accessory of the wafer cassette; and

a robotic diffraction arm configured to free the camera for movement.

5. The apparatus of claim 1, further comprising a first defective product discharge portion configured to discharge a wafer cassette determined to be defective due to inspection by the attachment inspection portion.

6. The apparatus of claim 1, further comprising a package inspection portion configured to inspect a state of the wafer cassette that has been packaged by the sub-film packaging portion.

7. The apparatus of claim 6, further comprising a second defective product discharge portion configured to discharge a wafer cassette determined to be defective due to the inspection of the package inspection portion.

8. The apparatus of claim 1, wherein the main film wrapping portion and the sub-film wrapping portion comprise film wrapping devices.

9. The apparatus of claim 8, wherein said film wrapping means comprises:

a film supply unit configured to supply a packaging film;

a film opening unit configured to open an opening of the packaging film;

a cassette insertion unit configured to insert a wafer cassette into the opening of the packaging film; and

a sealing unit configured to seal edges of the packaging film into which the wafer cassette has been inserted.

10. The apparatus of claim 1, further comprising a desiccant attachment portion configured to attach desiccant to a surface of the primary film that has been packaged to the wafer cassette.

11. The apparatus of claim 10, wherein the desiccant attachment comprises:

a desiccant supply unit configured to supply a desiccant to one side of the wafer cassette that has been packaged using the main film; and

a taping unit configured to attach the desiccant to the surface of the primary film using a tape.

12. An apparatus for packaging wafer boxes, the apparatus comprising:

a loading part to which a plurality of wafer cassettes are loaded;

an attachment inspection portion configured to check a key portion attached to the loaded wafer cassette and inspect an attachment of the wafer cassette;

a main film wrapping portion configured to receive a main film and wrap the wafer cassette with the main film in accordance with the key portion read by the attachment inspection portion; and

a sub film wrapping portion configured to receive a sub film according to the key portion and to secondarily wrap the wafer cassette using the sub main film.

13. The apparatus of claim 12, wherein the accessory inspection portion comprises:

a platform for rotating and supporting the wafer cassette;

a camera configured to inspect the key portion attached to the wafer cassette and the accessory of the wafer cassette; and

a robotic diffraction arm configured to free the camera for movement.

14. An apparatus for packaging wafer boxes, the apparatus comprising:

a loading part to which a wafer cassette is loaded;

a main film wrapping portion configured to receive a main film and wrap the wafer cassette using the main film;

a sub film wrapping part configured to receive a sub film and secondarily wrap the wafer cassette using the sub film; and

an unloading section configured to discharge the wafer cassette that has been completely packaged.

15. The apparatus of claim 14, wherein the main film wrapping portion and the sub-film wrapping portion comprise film wrapping devices.

16. The apparatus of claim 15, wherein said film wrapping means comprises:

a film supply unit configured to supply a packaging film;

a film opening unit configured to open an opening of the packaging film;

a cassette insertion unit configured to insert the wafer cassette into the opening of the packaging film; and

a sealing unit configured to seal edges of the packaging film into which the wafer cassette has been inserted.

17. An apparatus for packaging wafer boxes, the apparatus comprising:

a loading part to which a wafer cassette is loaded;

a main film wrapping portion configured to receive a main film and wrap the wafer cassette using the main film;

a desiccant attachment portion configured to attach desiccant on a surface of the primary film that has been packaged to the wafer cassette;

a sub film wrapping part configured to receive a sub film and secondarily wrap the wafer cassette using the sub film; and

an unloading section configured to discharge the completely packaged wafer cassette.

18. The apparatus of claim 17, wherein the desiccant attachment comprises:

a desiccant supply unit configured to supply a desiccant to one side of the wafer cassette that has been packaged using the main film; and

a taping unit configured to attach the desiccant on a surface of the primary film using a tape.

19. An apparatus for packaging wafer boxes, the apparatus comprising:

a film supply unit configured to supply a packaging film;

a film opening unit configured to open an opening of the packaging film;

a cassette insertion unit configured to insert the wafer cassette into the opening of the packaging film; and

a sealing unit configured to seal edges of the packaging film into which the wafer cassette has been inserted.

20. An apparatus for packaging wafer boxes, the apparatus performing a method comprising:

attaching a first label to a wafer cassette according to a keying portion attached to the wafer cassette;

receiving a primary film and primarily packaging the wafer box with the primary film;

attaching a desiccant to a surface of the primary film, the wafer cassette having been primarily wrapped by the primary film;

receiving a secondary film and secondarily wrapping the wafer cassette using the secondary film;

attaching a second label to the secondary film; and

and discharging the completely packaged wafer box.

Technical Field

The present invention relates to packaging of wafer cassettes, and more particularly, to a wafer cassette packaging apparatus capable of automatically packaging wafer cassettes.

Background

The wafer refers to a sheet used as a raw material of a semiconductor Integrated Circuit (IC), and is mainly manufactured using a silicon material.

The manufacturing process of the silicon wafer comprises the following steps: a single crystal growing process for manufacturing a single crystal silicon ingot; a slicing step of slicing a single crystal silicon ingot to obtain a thin disk-shaped wafer; an edge grinding step of machining an outer peripheral portion of the wafer to prevent cracking and deformation of the wafer obtained by the slicing step; a fine grinding process for removing damage left on the wafer due to the machining to improve flatness of the wafer; a polishing step for mirror-polishing the wafer; and a cleaning process for removing residues or foreign substances attached to the wafer.

The wafers produced through these processes are contained in a box such as a Front Opening Shipping Box (FOSB) to prevent contamination and to prevent external impact, and then packaged and transported using a packaging film to be sealed from the outside.

However, in the related art, since the packing of the wafer cassette is performed manually, the packing speed is very slow and the packing quality differs according to the operator. Further, the packaging film, the label to be attached, the packaging method, and the like are different depending on the type of wafer cassette.

Disclosure of Invention

Accordingly, the present invention is directed to providing a wafer cassette packing apparatus which can automatically and rapidly pack a variety of wafer cassettes and maintain the uniformity and accuracy of packing quality regardless of workers.

The present invention provides an apparatus for packaging wafer boxes, the apparatus comprising: a loading part to which the wafer cassette is loaded; an attachment inspection portion configured to check a key portion (recipe) attached to the wafer cassette and inspect an attachment of the wafer cassette; a first label attachment portion configured to attach a first label to the wafer cassette that has completed the attachment inspection; a main film wrapping portion configured to receive a main film in accordance with the key portion and wrap the wafer cassette with the main film; a sub film wrapping part configured to receive a sub film according to the key part and secondarily wrap the wafer cassette using the sub film; a second label attachment portion configured to attach a second label to a secondary film already packaged in the wafer cassette; and an unloading section configured to discharge the completely packaged wafer cassette.

The key section may include at least one of a barcode and a Quick Response (QR) code.

The key section may contain selection information on at least one of the main film, the first label, the sub-film, the second label, the packing direction, and the packing method according to the kind of the wafer cassette.

The accessory inspection part may include: a stage for rotating and supporting the wafer cassette; a camera configured to inspect accessories attached to the key portion of the wafer cassette and the wafer cassette; and a robotic diffraction arm configured to freely move the camera.

The apparatus may further include a first defective product discharge portion configured to discharge the wafer cassette determined to be defective due to the inspection by the attachment inspection portion.

The apparatus may further include a package inspection portion configured to inspect a state of the wafer cassette that has been packaged by the sub-film packaging portion.

The apparatus may further include a second defective product discharge portion configured to discharge the wafer cassette determined to be defective due to the inspection by the package inspection portion.

The main film wrapping portion and the sub film wrapping portion may include film wrapping means.

The film wrapping apparatus may include: a film supply unit configured to supply a packaging film; a film opening unit configured to open an opening of the packaging film; a cassette insertion unit configured to insert the wafer cassette into the opening of the packaging film; and a sealing unit configured to seal edges of the packaging film into which the wafer cassette has been inserted.

The apparatus may also include a desiccant attachment portion configured to attach desiccant to a surface of a primary film that has been packaged in the wafer cassette.

The desiccant attachment portion may include: a desiccant supply unit configured to supply a desiccant to one side of the wafer cassette that has been packaged using the main film; and a taping unit configured to attach the desiccant to a surface of the primary film using a tape.

The present invention provides an apparatus for packaging wafer boxes, the apparatus comprising:

a loading part to which a plurality of wafer cassettes are loaded;

an attachment inspection portion configured to check a key portion attached to the loaded wafer cassette and to inspect an attachment of the wafer cassette;

a main film wrapping portion configured to receive a main film and wrap the wafer cassette using the main film in accordance with the key portion read by the attachment inspection portion; and

and a sub film wrapping part configured to receive the sub film according to the key part and to secondarily wrap the wafer cassette using the sub film.

The accessory inspection part may include: a stage for rotating and supporting the wafer cassette; a camera configured to inspect accessories attached to the key portion of the wafer cassette and the wafer cassette; and a robotic diffraction arm configured to freely move the camera.

The present invention provides an apparatus for packaging wafer boxes, the apparatus comprising: a loading part to which the wafer cassette is loaded; a main film wrapping part configured to receive a main film and wrap the wafer cassette using the main film; a sub film wrapping part configured to receive a sub film and secondarily wrap the wafer cassette using the sub film; and an unloading section configured to discharge the completely packed wafer cassette.

The main film wrapping portion and the sub film wrapping portion may include film wrapping means.

The film wrapping apparatus may include: a film supply unit configured to supply a packaging film; a film opening unit configured to open an opening of the packaging film; a cassette insertion unit configured to insert the wafer cassette into the opening of the packaging film; and a sealing unit configured to seal edges of the packaging film into which the wafer cassette has been inserted.

The present invention provides an apparatus for packaging wafer boxes, the apparatus comprising: a loading part to which the wafer cassette is loaded; a main film wrapping part configured to receive a main film and wrap the wafer cassette using the main film; a desiccant attachment portion configured to attach a desiccant to a surface of a primary film that has been packaged to a wafer cassette; a sub film wrapping part configured to receive a sub film and secondarily wrap the wafer cassette using the sub film; and an unloading section configured to discharge the completely packed wafer cassette.

The desiccant attachment portion may include: a desiccant supply unit configured to supply a desiccant to one side of the wafer cassette that has been packaged using the main film; and a taping unit configured to attach the desiccant on the surface of the primary film using a tape.

The present invention provides an apparatus for packaging wafer boxes, the apparatus comprising: a film supply unit configured to supply a packaging film; a film opening unit configured to open an opening of the packaging film; a cassette insertion unit configured to insert the wafer cassette into the opening of the packaging film; and a sealing unit configured to seal edges of the packaging film into which the wafer cassette has been inserted.

The present invention provides an apparatus for packaging wafer boxes, the apparatus performing a method comprising: attaching a first label to the wafer cassette according to a keying portion attached to the wafer cassette; receiving the primary film and primarily packaging the wafer box with the primary film; attaching a desiccant to a surface of a primary film from which the wafer cassette has been primarily packaged; receiving the sub-film and secondarily packaging the wafer cassette using the sub-film; attaching a second label to the secondary film; and discharging the fully packaged wafer cassette.

Drawings

Fig. 1 is a block diagram of a wafer cassette packaging apparatus according to an embodiment of the present invention.

FIG. 2 illustrates an embodiment of the accessory inspection section of FIG. 1.

Fig. 3 is a perspective view of a wafer cassette packaging film according to an embodiment of the present invention.

Fig. 4 is a perspective view of the film wrapping apparatus in the main film wrapping portion of fig. 1.

Fig. 5 is a schematic side view showing a wrapping process performed using the film wrapping apparatus of fig. 4.

FIG. 6 is a perspective view of the sealing unit in the primary film wrapper of FIG. 1.

Fig. 7 is a side view of fig. 6.

FIG. 8 illustrates an embodiment of the desiccant attachment of FIG. 1.

Fig. 9 to 11 illustrate the operation of the sub film wrapping part of fig. 1.

Fig. 12 is a perspective view of a wafer cassette that has been fully packaged using a packaging film according to one embodiment.

Detailed Description

Hereinafter, embodiments are more specifically illustrated by the description of the drawings and the embodiments. In the description of the embodiments, when it is described that each layer (film), each region, each pattern or each structure is formed "above/on" or "below/under" of the substrate, each layer (film), each region, each mat or each pattern, the above description includes both "directly" or "indirectly" (by interposing another layer) formed "above/on" and "below/under". Further, the criteria of "above/upper" or "below/lower" of each layer will be described with respect to the drawings.

For convenience and clarity of description, regions in the drawings may be enlarged, omitted, or schematically illustrated. Furthermore, the dimensions of each component do not exactly match their actual dimensions. Further, in the description of the drawings, like reference numerals refer to like elements. Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

Fig. 1 is a block diagram of a wafer cassette packaging apparatus according to an embodiment of the present invention.

Referring to fig. 1, a wafer cassette packaging apparatus 1 according to an embodiment may include a loading part 100, an attachment inspection part 200, a first label attachment part 300, a first defective product discharge part 400, a main film packaging part 500, a desiccant attachment part 600, a sub film packaging part 700, a package inspection part 750, a second label attachment part 800, a second defective product discharge part 900, and an unloading part 1000.

A wafer cassette C (see fig. 2) configured to accommodate a plurality of wafers may be loaded to the loading part 100. For example, the wafer cassette C may be a Front Opening Shipping Box (FOSB), and a plurality of wafer cassettes C having various sizes and shapes may be standby and sequentially loaded one by one to the loading part 100.

The loading part 100 may include a device for conveying the wafer cassette C, such as a conveyor belt and a robot arm, and has a space in which a plurality of wafer cassettes C may stand by in a row. The loading portion 100 can communicate with each of the configurations within the apparatus via a Manufacturing Execution System (MES). That is, the MES is an integrated management system for managing the entire process of packaging the wafer cassette, and enables close communication between the respective elements of the wafer cassette packaging apparatus 1.

The wafer cassette packing apparatus 1 of the present invention can perform packing as the same-shaped wafer cassettes C are sequentially loaded into the apparatus from the loading portion 100. Even when various wafer cassettes C are loaded randomly from the loading portion 100, the wafer cassette packaging apparatus 1 can perform packaging corresponding to each wafer cassette C.

For this, the key part may be attached to the wafer cassette C loaded from the loading part 100. Here, the key section may be a label containing selection information on the main film 10 (see fig. 3), the first label, the sub-film 10a (see fig. 3), the second label 80 (see fig. 12), the packaging method, the packaging direction, and the like. For example, the key portion may include at least one of a bar code and a Quick Response (QR) code and be attached to one surface of the wafer cassette C.

Thus, the information contained in the key section can be read by the reader device. The wafer cassette packing apparatus 1 may include a reader device capable of reading the key section information, selects the packing films 10 and 10a, the label, and the like, and selects the packing direction, the packing method, and the like according to the read key section information, and automatically performs packing of the wafer cassette C.

The attachment inspection portion 200 may check the key portion attached to the wafer cassette C and inspect the attachment of the wafer cassette C. Here, the attachment inspection can be used as a term including all inspections for inspecting an external state of the wafer cassette C, such as a state in which the handle, the flange, and the hole of the wafer cassette C are clogged, and an internal state of the wafer cassette C, such as an exact number of wafers contained in the wafer cassette C and whether or not the wafers are aligned in a correct position.

FIG. 2 illustrates one embodiment of the accessory inspection section of FIG. 1.

Referring to fig. 2, the attachment inspection portion 200 may include an attachment inspection unit 20, a camera 22, a robot diffraction arm 23, and a drive 25, the attachment inspection unit 20 including a platform 21 configured to rotate and support the wafer cassette C, the camera 22 having a reader device configured to inspect the key portion attached to the wafer cassette C and the attachment of the wafer cassette C, the robot diffraction arm 23 configured to freely move the camera 22, and the drive 25 configured to drive the robot diffraction arm 23.

When it is determined that the state of the wafer cassette C is normal due to the inspection by the attachment inspection portion 200, the first label corresponding to the key portion is attached to the wafer cassette C, and the packaging process is continued. However, when the inspection result of the attachment inspection portion 200 determines that the wafer cassette C is abnormal, the wafer cassette C is discharged to the first defective product discharge portion 400 without attaching the first label to the wafer cassette C and without packaging the wafer cassette C.

First label attachment portion 300 may attach the first label to wafer cassette C that has completed the attachment inspection and has been determined to be normal. The first label may include indications of various information about wafers contained in the wafer cassette C and is attached to one surface of the wafer cassette C.

The main film wrapping part 500 may perform main wrapping of the wafer cassette C to which the first label has been attached. Here, the main film wrapping part 500 may receive the main film 10 according to the key part and mainly wrap the wafer cassette C using the main film 10.

Fig. 3 shows a perspective view of a wafer cassette packaging film according to an embodiment of the present invention. As shown in fig. 3, the wafer cassette packaging films 10 and 10a may include a main film 10 and a sub-film 10a, and the wafer cassette C may be packaged in two layers.

Referring to fig. 3A, the main film 10 according to an embodiment may include an upper surface sheet 11, a lower surface sheet 12, and a pair of side surface sheets 13 and 14.

The upper and lower surface sheets 11 and 12 may surround the upper and lower surfaces of the wafer cassette C (see fig. 4), and the pair of side surface sheets 13 and 14 may surround both side surfaces of the wafer cassette C. For example, the upper surface sheet 11, the lower surface sheet 12, and the side surface sheets 13 and 14 may have a rectangular shape.

Here, the pair of side surface sheets 13 and 14 may extend from the side surfaces of the upper and lower surface sheets 11 and 12, and may be folded or unfolded inward. That is, one sides of the upper surface sheet 11, the lower surface sheet 12, and the pair of side surface sheets 13 and 14 may be joined to each other and form the closed portion 15, and the other sides thereof may form the opening 16 as the side surface sheets 13 and 14 are unfolded.

Accordingly, the main film 10 can be conveyed into the main film wrapping part 500 while being folded, and the wafer cassette C can be accommodated therein while being unfolded. Further, while the wafer cassette C is accommodated inside the main film 10, the main film 10 may be folded again, thereby sealing the edge area of the main film 10.

Further, as shown in fig. 3B, unlike the main film 10, the sub-film 10a may include first holes 13a and 14a and second holes 13B and 14B respectively formed in the pair of side surface pieces 13 and 14 so as to communicate with each other when the sub-film 10a is folded. Here, the first holes 13a and 14a and the second holes 13b and 14b are disposed adjacent to the opening 16 of the packaging film 10, thereby facilitating secondary sealing as will be described below.

The films shown in fig. 3A and 3B may be used as the main film or the sub-film in their entirety, and other types of films may be used as the main film or the sub-film.

The main film 10 and the sub-film 10a may include at least one of a polyethylene terephthalate (PET) film, an oriented polypropylene (OPP) film, a Polyethylene (PE) film, a polypropylene (PP) film, and a linear low density polyethylene (LL DPE) film.

Further, the surface of the packaging film may be laminated. The laminated film may have a smooth surface and be better protected and preserved. Further, the surface of the packaging film may be coated with aluminum.

In general, the main film 10 is referred to as a laminate film because the surface of the main film 10 is laminated, and the sub-film 10a is referred to as an aluminum film because the surface of the sub-film 10a is coated with opaque aluminum. The main film and the sub-film may be referred to as an inner wrapping film and an outer wrapping film, respectively, or may be referred to as a wafer case wrapping film or the like.

The main film wrapping part 500 mainly uses the main film 10 described above to wrap the wafer cassette C. The main film wrapping part 500 can wrap the wafer cassette C by selecting and applying the main film 10 suitable for the key part, a wrapping position (direction) of the wafer cassette C, a wrapping method, a sealing method, and the like.

To this end, the main film wrapping portion 500 may include the film wrapping apparatus 50. The film wrapping apparatus 50 may also be included in a sub-film wrapping portion 700, which will be described below, configured to perform wrapping using the sub-film 10 a.

Fig. 4 is a perspective view of the film wrapping apparatus in the main film wrapping portion of fig. 1. FIG. 5 is a schematic side view showing a process of performing wrapping using the film wrapping apparatus of FIG. 4. FIG. 6 is a perspective view of the sealing unit in the primary film wrapper of FIG. 1. Fig. 7 is a side view of fig. 6.

As shown in fig. 4 to 7, the film wrapping apparatus 50 may include a film supply unit (not shown), film opening units 51 and 52, a cassette insertion unit 53, and a sealing unit 54.

Although not shown, the film supply unit may include a space in which a plurality of main films 10 are stacked, and may supply a single main film 10 to each position of the film opening units 51 and 52 of the main film wrapping portion 500, respectively.

The film opening units 51 and 52 may lift the upper surface sheet 11 of the main film 10 in a folded state and open the opening 16. For example, the film opening units 51 and 52 may be a pair such that a single film opening unit is disposed on both the side surface pieces 13 and 14.

Referring to fig. 4, the film opening units 51 and 52 may include a pair of upper surface grippers 51a and 52a configured to grip and lift the upper surface sheet 11, and a pair of lower surface grippers 51b and 52b configured to grip and fix the lower surface sheet 12, respectively.

The upper surface holders 51a and 52a may be disposed in pairs at positions adjacent to the opening 16 and the closing part 15 of the upper surface sheet 11 and hold the upper surface sheet 11 (more specifically, hold corner regions between the upper surface sheet 11 and the side surface sheets 13 and 14), and may be operable to ascend and descend from the lower surface holders 51b and 52b to the lower surface holders 51b and 52 b.

The lower surface holders 51a and 52a may be disposed in pairs at positions adjacent to the opening 16 and the closed portion 15 of the lower surface sheet 12 and hold the lower surface sheet 12 (more specifically, hold corner regions between the lower surface sheet 12 and the side surface sheets 13 and 14), and may be close to or spaced apart from the upper surface holders 51a and 52a at positions corresponding to the pairs of upper surface holders 51a and 52 a.

When the upper surface holders 51a and 52a are lifted from the lower surface holders 51b and 52b while the upper surface holders 51a and 52a hold the upper surface sheet 11 of the main film 10 as shown in fig. 4, the opening 16 of the main film 10 can be opened.

The cassette insertion unit 53 may receive the wafer cassette C moved from the first label attachment portion 300 and insert the wafer cassette C into the main film 10 that has been opened by the main film wrapping portion 500. That is, when operated in the horizontal direction, the cassette insertion unit 53 may introduce the wafer cassette C into the main film 10 via the opening 16 of the main film 10 opened by the film opening units 51 and 52 as shown in fig. 5.

When the wafer cassette C is inserted into the main film 10, the sealing unit 54 may perform sealing of the edge region of the main film 10 into which the wafer cassette C has been inserted, so that the main film 10 is sealed from the outside.

As shown in fig. 6 and 7, the sealing unit 54 may include an upper sealing unit 30 and a lower sealing unit 40. Here, the upper sealing unit 30 may be disposed at an upper portion of the packaging film 10, and the lower sealing unit 40 may be disposed at a lower portion of the packaging film 10 where sealing is performed.

The sealing unit 54 may simultaneously perform dual structure sealing, i.e., line type primary sealing and point type secondary sealing. Of course, the sealing unit 54 may perform only the primary sealing or the secondary sealing as needed, or may perform the primary sealing and the secondary sealing sequentially, rather than performing both simultaneously.

More specifically, the upper sealing unit 30 may include an upper body 31, a line type welding part 32, an upper surface pressing bar 33, and a point type welding part 35.

The upper body 31 may allow the above-described line-type welding portion 32, upper surface pressing bar 33, and spot-type welding portion 35 to be supported at a lower portion, and although not shown, the upper body 31 may be lowered toward the lower sealing unit 40 by an ascending/descending movement portion, thereby performing primary sealing and secondary sealing on the packaging film 10.

The line-type welding part 32 may be formed in the shape of a linear bar, and the upper surface sheet 11 may be welded in a linear shape such that the upper surface sheet 11 is bonded to the lower surface sheet 12, thereby performing a primary seal.

The upper surface pressing bar 33 may press the upper surface sheet 11 into a linear shape, adhere the upper surface sheet 11 to the lower surface sheet 12, and align the sheets with each other, thereby allowing the primary and secondary sealing to be stably and uniformly performed.

The spot welds 35 may be formed as a pair and mounted to be movable on the upper surface sheet 11. The spot welds 35 may perform a secondary seal. Here, the linear welding portion 32 may be disposed between the upper surface pressing bar 33 and the spot welding portion 35.

Accordingly, the primary sealing may be performed at the region of the primary film 10 disposed at the inner side, and the secondary sealing may be performed at the edge region of the primary film 10 disposed at the outer side.

The lower sealing unit 40 may include a lower body 41, a linear support rod 42, a lower surface support rod 43, and a point-type support rod 45 as configurations corresponding to those of the sealing unit 30 described above, respectively.

The lower body 41 may allow the above-described linear support bars 42, lower surface support bars 43, and dot-shaped support bars 45 to be supported at the upper portion and may interact with the upper sealing unit 30, thereby performing primary sealing and secondary sealing on the packaging film 10. Further, the lower body 41 may be moved toward the upper sealing unit 30 by the ascending/descending moving part.

The linear support bar 42 may be formed in the shape of a linear bar, support the lower surface sheet 12, and interact with the linear welding part 32 of the upper sealing unit 30, so that the upper surface sheet 11, the side surface sheets 13 and 14, and the lower surface sheet 12 are bonded to each other, thereby performing the main sealing.

The lower surface support bars 43 may support the lower surface sheet 12 in a linear shape, adhere the upper surface sheet 11 and the lower surface sheet 12 to each other and the upper surface press bars of the upper sealing unit 30, and align the sheets with each other, thereby allowing the primary sealing and the secondary sealing to be stably and uniformly performed.

The point type support bars 45 may be formed as a pair and support the lower surface sheet 12 in a point shape. Accordingly, the point type support bar 45 may interact with the point type welding part 35 of the upper sealing unit 30, thereby performing secondary sealing.

Here, the linear support bar 42 may be disposed between the lower surface support bar 43 and the point-type support bar 45. Accordingly, the primary sealing may be performed at the region of the packaging film 10 disposed on the inner side, and the secondary sealing may be performed at the edge region of the packaging film 10 disposed on the outer side.

The wafer cassette C which has been packed by the film-packing device 50 using the main film 10 as described above may be moved to the desiccant attachment portion 600.

The desiccant attachment 600 may attach the desiccant to the surface of the primary film of the packaged wafer box C. The desiccant is used to remove moisture to prevent moisture from being generated in the packaged wafer box C. Desiccants may be referred to as desiccants, silica gels, and the like.

FIG. 8 illustrates an embodiment of the desiccant attachment of FIG. 1.

As schematically shown in fig. 8, the desiccant attachment portion 600 may include a desiccant attachment unit 60, the desiccant attachment unit 60 including a desiccant supply unit 61 and a band application unit 62, the desiccant supply unit 61 configured to hold the desiccant 7 and move the desiccant 7 to one side of the wafer cassette C, and the band application unit 62 configured to attach the desiccant 7 on the surface of the main film 10 using a band T.

As described above, since the desiccant 7 is stably attached on the surface of the main film 10 by the desiccant attachment portion 600 using the tape T, the sub-film wrapping portion 700 can be smoothly wrapped using the sub-film 10a, and the desiccant 7 can be fixed in place without moving between the main film 10 and the sub-film 10 a.

The wafer cassette C to which the desiccant 7 has been attached can be moved to the sub film packaging part 700.

The sub-film wrapping part 700 receives the sub-film 10a according to the key part and secondarily wraps the wafer cassette C. The sub-film wrapping part 700 may wrap the wafer cassette C by selecting and applying the sub-film 10a suitable for the key part, a wrapping position (direction) of the wafer cassette C, a wrapping method, a sealing method, and the like.

The sub film wrapping portion 700 may include the film wrapping apparatus 50 used in the above-described main film wrapping portion 500. That is, as shown in fig. 4 to 7, the film wrapping apparatus 50 in the sub film wrapping portion 700 may include a film supply unit (not shown), film opening units 51 and 52, a cartridge insertion unit 53, and a sealing unit 54. Therefore, a detailed description of the film wrapping apparatus 50 will be omitted.

Fig. 9 to 11 illustrate the operation of the sub-film wrapping portion of fig. 1, and fig. 12 is a perspective view of a wafer cassette C that is completely wrapped using a wrapping film according to an embodiment.

Referring to fig. 9 to 12, the sub-film wrapping part 700 may perform secondary wrapping of the wafer cassette C by using an aluminum film 10a shown in fig. 3B, the aluminum film as the sub-film 10a having a pair of first holes 13a and 14a and a pair of second holes 13B and 14B formed therein.

In this case, for the main sealing, since the sealing is linearly performed while the side surface pieces 13 and 14 are folded, the sealing should be performed such that all four pieces are joined at the portion where the side surface pieces 13 and 14 are folded. Therefore, since sealing may not be performed well at the position where each sheet is folded in the primary sealing process, the edge of the sub-film 10a may be further prevented from being peeled off by performing secondary sealing on the folded portion of each sheet.

As shown in fig. 11, the primary seal S1 may be performed in a linearly elongated shape on the secondary film 10a, and the secondary seal S2 may be performed on the secondary film 10a, so that when the pair of side surface sheets 13 and 14 are folded such that the first holes 13a and 14a and the second holes 13b and 14b communicate with each other, regions of the upper and lower surface sheets 11 and 12 adjacent to the first holes 13a and 14a and the second holes 13b and 14b are bonded to each other in a dot shape. That is, the secondary sealing S2 may be performed using only two sheets due to the first holes 13a and 14a and the second holes 13b and 14 b.

As shown in fig. 12, when the sealing of the secondary film 10a is completed as described above, the sealed edge region is completed using the strip T so as to be in contact with the upper surface sheet 11 of the secondary film 10 a. In the present embodiment, by sealing the edges of the packaging films 10 and 10a into a double layer by the primary seal S1 and the secondary seal S2 and finally completing the edge region using the tape T on the upper surface sheet 11, the packaging films 10 and 10a can be completed uniformly while preventing the packaging films 10 and 10a from falling off.

The wafer cassette C packaged using the sub-film 10a as described above can be moved to the package inspection portion 750, and the packaged state of the wafer cassette C can be inspected. The package inspection section 750 may include a camera 22 similar to the attachment inspection section 200 described above, and perform a visual inspection.

The wafer cassette C determined to be normal by the package inspection part 750 moves to the second label attachment part 800. The second label attachment portion 800 may attach the second label 80 to the wafer cassette C that is completely double-wrapped with the main film 10 and the sub-film 10 a.

The second label 80 is attached to the surface of the sub film 10a in a state where the wafer cassette C is invisible to the naked eye. In this manner, the second label 80 allows various types of information for identifying the wafers contained in the wafer cassette C without unpacking the wafer cassette C.

The wafer cassette C determined to be abnormal by the package inspection part 750 may be discharged to the second defective product discharge part 900 without attaching the second label 80 to the wafer cassette C.

The wafer cassette C, which has been completely packaged and to which the second label has been attached, can be discharged from the unloading part 1000 to the outside and then finally shipped.

According to the wafer box packaging equipment of the invention, the packaging processes of various wafer boxes can be automatically and rapidly carried out in stages, and the packaged wafer boxes can be uniformly finished without causing the edges of the packaging film to fall off. In this way, the quality of the package can be kept uniform and accurate regardless of the worker.

The features, structures, and effects described in the above embodiments are included in at least one embodiment of the present invention, but are not necessarily limited to only one embodiment. Furthermore, those skilled in the art to which the above embodiments pertain may combine or modify the illustrated features, structures, and effects associated with the above embodiments with other embodiments. Therefore, it is to be understood that the above combinations and modifications are included in the scope of the present invention.

Description of reference symbols

1: wafer box packaging equipment

10. 10 a: wafer case packaging film 11, upper surface sheet

11. 11 a: dot type seal region 12 lower surface sheet

13. 14: side surface sheets 13a, 14 a: first hole

13b, 14 b: second hole 15 connecting area (closed part)

16, opening C: wafer box

20 accessory inspection unit 21 rotary platform

22 reader device 23 robot arm

25 robot arm driver 30 upper sealing unit

31 upper body 33 linear welding part

33 upper surface pressure bar 35 point type welding part

40 lower sealing unit 41 lower body

42 linear support bar 43 lower surface support bar

45 point type supporting rod 50 film wrapping device

51,52 film opening unit 53 cassette insertion unit

54,74 sealing unit 60 desiccant attachment unit

61 desiccant holding part 62 band applying part

S1: linear sealing region S2: point type sealing area

100 loading part 200 attachment inspection part

300 first label attachment part 400 first defective product discharge part

500 main film wrapping 600 desiccant attachment

700, subsidiary film packaging part 750, and packaging inspection part

800 second label attachment portion 900 second defective product discharge portion

1000 unloading part