JP2013166104A - Dust removal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust removal device which is a dust removal device for performing dust removal of the surface of a printing medium by using pressure-sensitive adhesive rollers for a precision printing machine and can surely perform dust removal by a simple structure even for a thin film.SOLUTION: There is provided a dust removal device which is constituted from an upstream side pressure-sensitive adhesive roller 6 disposed on the upstream side in relation to the feed direction 5 of a film 4 as a dust removal object and having a plural grooves 7 and provided with a pressure-sensitive adhesive part 8 partitioned by the grooves 7, a downstream side pressure-sensitive adhesive roller 9 disposed on the downstream side in parallel to the upstream side pressure-sensitive adhesive roller 6, upstream side separation bodies 12 of the upstream side of the grooves 7 of the upstream side pressure-sensitive adhesive roller 6, and downstream side separation bodies 13 of the downstream side pressure-sensitive adhesive roller 9, wherein the grooves 7 of the upstream side adhesive roller 6 and the corresponding grooves 10 of the downstream side pressure-sensitive roller 9 are not in alignment with each other to avoid superposition, and cooperation parts 20 which perform cooperation to avoid unsmooth transfer of the film 4 are provided between the upstream side separation bodies 12 and the downstream side separation bodies 13.

Description

  The present invention relates to a dust removing device that removes foreign matter adhering to the surface of a print medium such as a film, and more particularly to a dust removing device of a type that removes dust with an adhesive roller.

  In recent years, the development of precision printing technology for printing a precise image on a printing medium such as a sheet-like or roll-like film has been remarkable. Conventionally, photo-etching has been used to perform precise printing. Recently, it has become possible to form images by precision printing such as wiring patterns at low cost using printing techniques such as gravure printing, inkjet printing, and screen printing.

  In precision printing, it is necessary to keep the surface of the print medium clean. If foreign matter adheres on the print medium, it may cause defects in the quality of the print medium. In addition, the adhesion of foreign matter may cause a potential defect, and the defect may become apparent with the passage of time.

  Therefore, various dust removing devices for printing media are conventionally known. Depending on the standards required for dust removal, they exist from large-scale facilities to simple devices, but large-scale dust removal devices are extremely expensive. The dust removing device cannot be industrially established unless the balance between the cost required for dust removal and other costs such as printing and materials is always considered.

  Precision printing is performed in an environment in which the degree of cleanliness is controlled, and the printing medium used for the printing is also managed so that no foreign matter adheres to it. However, there is still a case where foreign matter accidentally adheres to the print medium due to some cause such as floating matter. As described above, a dust removing device using an adhesive roller is suitable for removing a small amount of accidental foreign matters.

  A dust removing device using an adhesive roller is disposed immediately before a printing station in a printing process. The dust removing device is configured to bring a sticking roller into contact with a printing surface of a printing medium and transfer foreign matter attached to the surface of the printing medium to the sticking roller side. In a dust removing device using an adhesive roller, it is necessary to consider separation after the adhesive roller and the print medium are brought into close contact with each other. If the print medium has sufficient bending rigidity, such as a printed wiring board having a thickness of 1.6 mm, a special separation mechanism is not necessary. However, when the printing medium is a thin plate of about 0.1 mm, the printing medium may be wound around the adhesive roller because the bending rigidity of the printing medium is small. In such a case, it is necessary to reliably separate the adhesive roller and the print medium after the print medium passes through the adhesive roller by a special separation mechanism.

  Patent Document 1 describes an example of a separation mechanism that can be used in a dust removing device. The apparatus shown here is provided with a groove in a portion corresponding to the adhesive roller, and a separation member for separation is provided in the groove. The peeling member guides the printing paper away from the adhesive roller after the printing paper corresponding to the printing medium contacts the adhesive roller. However, it is difficult to apply the peeling member of this separation mechanism as it is to the separation of a thin film. The thin film will accidentally stick to the adhesive roller. If the film is handed over from the upstream roller to the downstream roller without eliminating the stuck state, if there is no cooperation, the film will be wrinkled or creased.

  Patent Document 2 shows an example of a separation mechanism using a dedicated roller in addition to an adhesive roller as a separation mechanism of a dust removing device. This separation mechanism is a combination of an adhesive roller and a separation roller adjacent to the adhesive roller. The adhesive roller is provided with a groove, and the separation roller enters the groove. Even if the print medium is wound around the adhesive roller, the leading end is handed over to the separation roller. As a result, the adhesive roller and the printing paper are separated without difficulty. However, since the structure is complicated and the total number of rollers increases, the external dimensions of the dust removing device increase.

  Patent Document 3 shows an example of another separation mechanism of a dust removing device. In the separation mechanism shown here, a guide shaft is disposed adjacent to the adhesive roller, and a belt is provided between the groove provided on the adhesive roller and the guide shaft. According to this structure, the same effect as the separation roller of the example of Patent Document 2 can be obtained. However, like the example shown in Patent Document 2, the structure becomes complicated, and the work time for exchanging the adhesive roller and the belt becomes longer.

JP-A-5-72946 Japanese Patent Laid-Open No. 10-5707 JP-A-62-257853

A conventional dust removing device that removes dust from the surface of a print medium using an adhesive roller has a problem that a mechanism for separating the adhesive roller and the print medium is complicated.
Further, the conventional dust removing device has a problem that it is not suitable for dust removal of a thin film.
This is because, in the conventional dust removal device, when the upstream adhesive roller and the downstream adhesive roller are combined, the linkage mechanism for transferring the film to be removed is complicated, or the structure is not suitable for thin film There is a cause.
SUMMARY OF THE INVENTION An object of the present invention is to provide a dust removing device that removes dust from the surface of a printing medium using an adhesive roller and has a simple structure and can reliably remove dust even with a thin film. .

The present invention is arranged on the upstream side in the direction of feeding the film to be dust-removed, and has an upstream adhesive roller having a plurality of grooves and having an adhesive part divided by the grooves, and a downstream side alongside the upstream adhesive roller. The downstream adhesive roller having a plurality of grooves and having an adhesive part divided by the grooves, and the groove of the upstream adhesive roller penetrates along the passage surface of the film and winds around the adhesive part. An upstream separator that separates the film from the adhesive portion according to the travel of the film, and a groove of the downstream adhesive roller that passes through the passage surface of the film and winds the film to be wrapped around the adhesive portion according to the travel of the film. In the dust removing apparatus configured with a downstream separator separated from the adhesive portion, the groove of the upstream adhesive roller and the groove of the downstream adhesive roller pass through the upstream and downstream adhesive rollers. The groove portions are shifted from each other so as not to overlap each other on the film surface, and a linkage unit is provided between the upstream side separator and the downstream side separator so as not to catch the film. A dust removing device characterized by
Further, the upstream side separator and the downstream side separator are provided with an approaching portion having a short distance between the upstream side adhesive roller and the downstream side adhesive roller as the linkage part.
In addition, the upstream separator and the downstream separator are integrally formed, and the link portion includes a bent portion that is bent so as to connect the upstream separator and the downstream separator.

  In the dust removing apparatus according to the present invention, when there is a foreign object in the traveling film, the film is transferred to the upstream adhesive roller or the downstream adhesive roller, and the film is dedusted. Even if the film tries to wrap around one of the adhesive rollers by the adhesive force of the upstream adhesive roller or the downstream adhesive roller, after passing through the adhesive roller, the upstream separator and the downstream separator can remove the film from any of the adhesive rollers. Since they are pulled apart, the film does not wrap around any of the adhesive rollers. According to the present invention, a separator is arranged on the upstream adhesive roller and the downstream adhesive roller, and a simple structure in which a linkage portion is provided between the separators. Dust can be removed.

FIG. 1 is a plan view of the first embodiment. FIG. 2 is a side view of the first embodiment. FIG. 3 is a front view of the upstream adhesive roller. FIG. 4 is a partially enlarged view of the upstream adhesive roller. FIG. 5 is a plan view of the second embodiment. FIG. 6 is a plan view of the third embodiment. FIG. 7 is a plan view of the fourth embodiment. FIG. 8 is a plan view of the fifth embodiment. FIG. 9 is a plan view of the sixth embodiment.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a plan view of a first embodiment of the present invention, and FIG. 2 is a side view of the embodiment of the present invention showing a cross section of FIG. Reference numeral 1 denotes a dust removing device. Reference numerals 2 and 3 denote frames that support the basic structure of the dust removing device 1. Reference numeral 4 shown in FIG. 2 denotes a film which is a print medium to be dust-removed. The film 4 is sent between the frame 2 and the frame 3 in the direction indicated by the arrow 5 and moves. Although not shown, the printing station is ahead of the film 4 in the traveling direction.

  Reference numerals 6 and 9 denote adhesive rollers. The adhesive roller 6 is upstream of the adhesive roller 9 in the moving direction 5 of the film 4. The upstream adhesive roller 6 includes a plurality of grooves 7. In addition, when it is the some groove | channel 7 and each groove | channel is distinguished, it distinguishes with each symbol from 7a to 7d. Other constituent elements to be described later are also distinguished by the example of the groove 7 when it is necessary to distinguish them individually. Reference numeral 8 denotes an adhesive portion of the upstream adhesive roller 6. The adhesive portion 8 is divided by a plurality of grooves 7. Reference numeral 10 denotes a groove of the downstream side adhesive roller 9. Reference numeral 11 denotes an adhesive portion of the downstream adhesive roller 9. The adhesive portion 11 is divided by the groove 10.

  Reference numeral 12 denotes an upstream separator. The upstream separator 12 is in the groove 7 and is disposed between the adhesive roller 6 and the film 4. The upstream separator 12 prevents the film 4 from being wrapped around the adhesive portion 8 due to the adhesive force of the adhesive roller 6. Reference numeral 13 denotes a downstream separator. The downstream separator 13 is in the groove 10 and prevents the film 4 from being wrapped around the adhesive portion 11 by the adhesive force of the adhesive roller 9. Reference numerals 14 and 15 denote support bars attached to the frames 2 and 3. The upstream separator 12 is fixed to the frames 2 and 3 by the support bar 14. The downstream separator 13 is fixed to the frames 2 and 3 by the support bar 15.

  The shape of the upstream separator 12 and the downstream separator 13 may be a round bar, a flat plate, a square bar, or the like, and the material may be a resin, metal, plant, or the like, such as a fluororesin. It can be composed of a composite material, such as a coated round steel wire. Since the separators 12 and 13 may come into contact with the surface of the film 4, it is desirable to select a material that does not damage or alter the film 4.

  In FIG. 2, 16 and 17 are support rollers. The support rollers 16 and 17 are rollers having substantially the same length as the adhesive rollers 6 and 9. The support rollers 16 and 17 are disposed at positions facing the adhesive rollers 6 and 9 with respect to the traveling film 4. The support rollers 16 and 17 support the film 4 by pressing it against the adhesive rollers 6 and 9.

  Reference numeral 18 denotes a film guide. The film guide unit 18 supports the film 4 so as not to drop off to the support rollers 16 and 17 before it reaches the downstream adhesive roller 9 after passing through the upstream adhesive roller 6. The film guide portion 18 can be made of sheet metal, resin, steel wire or the like.

  With the configuration as described above, the film 4 travels toward the upstream adhesive roller 6 or the downstream adhesive roller 9. If there is a foreign substance in the film 4, the foreign substance is transferred to the adhesive rollers 6 and 9, and the film 4 is dedusted. Even if the film 4 is to be wound around the adhesive rollers 6 and 9 by the adhesive force of the adhesive rollers 6 and 9, the film 4 passes through the adhesive rollers 6 and 9 and is then separated by the separators 12 and 13. , 9 apart. Therefore, the film 4 does not wind around the adhesive rollers 6 and 9.

As shown in FIG. 1, when viewed from the film 4, the groove 7b and the groove 10b do not overlap each other. That is, as shown by the distance 19, the groove 7 of the upstream adhesive roller 6 and the groove 10 of the downstream adhesive roller 9 are not formed on the surface of the film 4 that has passed through the upstream and downstream adhesive rollers 6, 9. They are offset from each other so that they do not overlap. As a result, the film 4 that has passed through the adhesive rollers 6 and 9 always comes into contact with the adhesive portion of one of the adhesive rollers 6 and 9. Accordingly, no part of the film 4 that is not dust-removed is generated.
Reference numeral 20 denotes a cooperation unit that cooperates between the upstream separator 12 and the downstream separator 13 without the film 4 being caught.

  FIG. 3 is an operation explanatory diagram of the separator 12. FIG. 3 is a front view of the upstream adhesive roller 6 shown in FIG. 1 as viewed from the downstream side of the film 4. The film 4 tends to wind around the adhesive portion 8 due to the adhesive force of the adhesive roller 6. This tendency is strong especially when the film 4 is thin. FIG. 3 schematically shows the winding of the film 4. If attention is paid to the adhesive portion 8b, the film 4 that has passed through the adhesive portion 8b is raised as shown in 21, so that the film 4 adheres. It tries to wrap around the part 8b.

  Therefore, the separators 12a and 12b provided in the grooves 7a and 7b pull the film 4 away from the adhesive portion 8b. As a result, the film 4 becomes wavy at the part of the separator 12. When the film 4 is lifted by the adhesive roller 6 and a part 21 lifted to the film 4 is generated, if the film 4 is transferred to the adhesive roller 9 as it is, the film 4 does not enter between the downstream adhesive roller 9 and the support roller 17, and the film 4 4 is wrinkled or creased. This is because the raised portion 21 of the film 4 that has passed through the upstream adhesive roller 6 does not pass through a normal passage route, such as colliding with the upper half of the downstream adhesive roller 9.

  Therefore, as shown in FIG. 1, a linkage unit 20 is provided in which the separator 12a and the separator 13a downstream thereof are brought close to each other. In the cooperation part 20, the upstream side of the adhesive roller 9 of the separating body 13a is necessary to form an approaching portion between the separating body 12a and the separating body 13a. The structure of the link unit 20 may be a structure in which the film 4 that has passed through the upstream side adhesive roller 6 is peeled off from the upstream side adhesive roller 6 by the upstream side separator 12a and then taken directly to the downstream side separator 13a. . After the film 4 passes through the upstream adhesive roller 6 by the cooperation unit 20 and reaches the downstream adhesive roller 9 without difficulty, no wrinkles or creases occur in the film 4.

  FIG. 4 is a partially enlarged view of the groove 7a and the separator 12a of the adhesive roller 6. Although the cross-sectional shape and material of the separated body 12 are not limited, for example, a steel wire outer skin covered with a resin can be considered. In particular, the lower half portion 22 in contact with the film 4 is preferably covered with, for example, a fluororesin so as not to affect the film 4 even when in contact with the film 4. On the other hand, the portion of the upper half 23 is not likely to come into contact with the film 4 and can be covered with an adhesive substance. There is a possibility that the adhesive substance in a portion that does not come into contact with the film 4 of the separator 12a captures foreign matters that float in the air and adhere to the film 4.

  FIG. 5 is a plan view of the second embodiment. In FIG. 5, the support bar 15 is provided on the upstream side of the downstream adhesive roller 9. With such a structure, the external dimensions of the dust removing device 1 can be reduced.

  FIG. 6 is a plan view of the third embodiment. In FIG. 6, it was set as the structure which bend | folds so that the isolation | separation body 12 and the isolation | separation body 13 may mutually approach in the part of the cooperation part 20. FIG. As a result, the shift distance 19 between the groove 7 and the groove 10 can be increased. Therefore, compared to the case where the grooves 7 and 10 are close to each other, the stress applied to the film 4 by the grooves 7 and 10 can be dispersed.

  FIG. 7 is a plan view of the fourth embodiment. In FIG. 7, the upstream separator 24 and the downstream separator 25 are close to each other by being separated into two at the linkage unit 26. As a result, the shift 19 between the groove 7 and the groove 10 can be maximized. Therefore, the stress applied to the film 4 by the grooves 7 and 10 can be dispersed to the maximum extent.

  FIG. 8 is a plan view of the fifth embodiment. In the example of FIG. 8, the upstream side separator 27 and the downstream side separator 28 are connected to one at the linkage unit 29. As a result, the film 4 is naturally delivered from the upstream adhesive roller 6 to the downstream adhesive roller 9.

  FIG. 9 is a plan view of the sixth embodiment. In FIG. 9, there are three adhesive rollers 30, 31, and 32. In this case, for the adhesive rollers 30 and 31, the upstream adhesive roller is 30, and the downstream adhesive roller is 31. The upstream separator is 35, and the downstream separator is 36. And the cooperation part becomes 33. On the other hand, in the combination of the adhesive rollers 31 and 32, the upstream adhesive roller is 31 and the downstream adhesive roller is 32. Further, the upstream separator is 36, the downstream separator is 37, and the linkage part is 34. One of the disadvantages of the dust removing device using the adhesive roller is that the foreign matter cannot be completely removed when the foreign matter is overlapped or has a layer structure on the surface of the film 4. However, by using three or more adhesive rollers as shown in FIG. 9, the possibility that foreign matter can be removed even when foreign matter overlaps on the film 4 is increased.

DESCRIPTION OF SYMBOLS 1 Dust remover 2, 3 Frame 4 Film 6 Upstream adhesive roller 7 Groove 8 Adhesive part 9 Downstream adhesive roller 12 Upstream separator 13 Downstream separator 20 Cooperation part.

Claims (3)

An upstream adhesive roller that is arranged on the upstream side in the feed direction of the film to be dust-removed, has a plurality of grooves, and has an adhesive part divided by the grooves;
A downstream adhesive roller disposed on the downstream side alongside the upstream adhesive roller, having a plurality of grooves, and having an adhesive part divided by the grooves,
An upstream separator that penetrates the groove of the upstream adhesive roller along the passage surface of the film and separates the film to be wound around the adhesive part from the adhesive part as the film travels;
In the dust removing apparatus constituted by a downstream separator that penetrates the groove of the downstream adhesive roller along the film passage surface and separates the film to be wound around the adhesive part from the adhesive part as the film travels,
The groove of the upstream adhesive roller and the groove of the downstream adhesive roller are shifted from each other so that the groove portions do not overlap on the film surfaces that have passed through the upstream and downstream adhesive rollers, and the upstream separation A dust removing device comprising a linkage unit that cooperates without catching the film between a body and the downstream separator.   The said upstream separator and the said downstream separator are provided with the approach part with a near distance between the said upstream adhesive roller and the said downstream adhesive roller as the said cooperation part. Dust removal device.   The upstream-side separator and the downstream-side separator are integrally formed, and the link portion includes a bent portion that is bent so as to connect the upstream-side separator and the downstream-side separator. Item 2. A dust removing device according to Item 1.

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