JPH0289985A - Drying device for sheet type work - Google Patents

Abstract

PURPOSE:To dry a work without producing any stain due to the movement of water drips on the surface of the work by a method wherein the surface of the work is wetted by water totally while the moisture on the surface of the work is dried by injecting air from a plurality of stages of air knives arranged in the advancing direction of the work. CONSTITUTION:Water is supplied from upper and lower water supplying nozzles 33, 34 to wet the upper and lower surfaces of a work 1 totally when the same passes through a water supplying means 30. The work 1, whose upper and lower surfaces are wetted, is advanced to the positions of air knives 31, 32 and moisture is blown off by the air injected out of respective air injection ports 31a, 31a, 32a, 32a when the work 1 passes two sets of air knives 31, 31, 32, 32 whereby the work 1 is dried. In this case, the surface of the work 1 is wetted totally and, therefore, water will never become water drips and will never be moved on the work 1 when the moisture is blown off by the air whereby stains due to the movement of water drips will never be produced. The work is brought into a high-pressure zone by the air injected out of two sets of air injection ports and, therefore, the moisture may be blown off surely.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a drying apparatus used for drying a flat workpiece made of metal, plastic, glass, ceramic, or the like.

[Prior Art] For example, as a method for drying a workpiece such as a glass plate after cleaning it with a cleaning device, an air blow method in which air is jetted toward the workpiece from a nozzle has been known.

However, in the conventional method, air is injected onto the workpiece that is sent to the workpiece with water droplets partially attached to its surface after being cleaned, so these water droplets dry while moving on the surface of the workpiece. However, it has the disadvantage that it tends to leave traces of movement.

Moreover, when air is injected from the nozzle to a moving workpiece in this way, the air flows over the workpiece not only backward in the direction of movement, but also in both front and rear directions, so water droplets are also divided into front and rear directions. Water droplets often caused stains even on surfaces that had been moved and had already been blown off and dried.

[Invention or problem to be solved]

An object of the present invention is to provide a drying device that can dry a workpiece without leaving any stains on the surface of the workpiece due to movement of water droplets.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the drying device of the present invention includes a water supply means for wetting the workpiece, and a slint-like drying device along a conveyance path for conveying a plate-like workpiece. and an air knife that injects air from the air outlet toward the workpiece,
The present invention is characterized in that a plurality of air knives are disposed on both sides of the conveyance path in the direction of movement of the workpiece.

[Function] The surface of the workpiece sent through the conveyance path is completely wetted by the water supply means, and in this state is dried by the air jetted from the air knife. At this time, since the entire surface of the workpiece is evenly wetted, when the attached moisture is blown away by air, it does not turn into water droplets and move on the workpiece, and no smearing occurs due to the movement of water droplets.

In addition, since a plurality of the above air knives are arranged on both sides of the conveyance path in the direction of movement of the workpiece, the area between adjacent air knives becomes a high pressure area due to the air jetted from these air knives, and this high pressure area Since the moisture adhering to the workpiece is difficult to enter together with the workpiece in its original state, the moisture is reliably blown away as the workpiece enters this area.

[Example] Hereinafter, the present invention will be described in more detail with reference to the drawings.

1 and 2 show a washing machine equipped with a drying device of the present invention, and this washing machine has a large number of transport rollers that horizontally hold and transport a plate-shaped work 1 such as a glass plate 3, along which a disk brush cleaning section 4, a roll brush cleaning section 5, and a drying section 6 are sequentially arranged, and a cleaning liquid such as water or a detergent solution is sprayed. A large number of shower nozzles 7 are arranged one above the other.

As is clear from FIG.
Both ends are rotatably supported by the left and right side frames 10, 10, and a pulley 3a is fixed to the rotating shaft.
0, there is a transmission shaft I extending in the arrangement direction of the conveyance rollers a.
I is rotatably attached, and an O-ring-shaped transmission heald 12 made of an elastic material such as rubber is wound between the transmission shaft 11 and the pulley 3a of each conveyance roller 3.

Furthermore, a motor 13 for driving the transmission shaft 11 is attached to the side frame IO. A drive bell) [4 is wound between the pulley 13♂ attached to 3 and the pulley Ila on the transmission shaft 11.

In this way, when the flexible transmission belt 12 is used to transmit power between the transmission i11 and the conveyance roller 3, it not only simplifies the transmission of power between these two orthogonal axes, but also prevents the transmission belt 12 from overloading. Its flexibility allows excess force to escape, which also has the advantage of producing less dust.

Further, as is clear from FIG. 4, the disk brush cleaning section 4 has cleaning surfaces 15a and 15 parallel to the workpiece 1.
[ia] Upper and lower disc brushes 15.18 with ia are used to clean both sides of the work l, and supporting members 17.18 are disposed above and below the conveyance path 2 so as to cross it.
A horizontal power transmission shaft 1 supports a plurality of disc brushes 15, 18 rotatably around a vertical axis at predetermined intervals, and drives each disc brush 154B.
9.20 and a vertical transmission fd+21 connected between these transmissions @19.20, and a bevel gear 2 attached to each disc brush 15.16 and transmission shaft 19.20.
2.23 are engaged with each other, and in this way, a plurality of disc brushes 15.23 are attached to the upper and lower support members 17.18. IS
The disc brush assembly supporting the workpiece 1 is placed at a distance slightly smaller than the length of the workpiece 1 in the traveling direction of the workpiece 1.
The vertical transmission shafts 21, 21 of each disc brush assembly are connected via a belt 24 to a common drive motor 25.

In this case, the positions of the upper and lower disc brushes 15 and 18 in each disc brush assembly may be the same or shifted in the width direction of the conveyance path 2. Upper disc brush 15.15 and lower disc brush 18.1
By arranging the six brushes so as to be located between adjacent disc brushes in the other disc brush assembly, leakage of cleaning can be eliminated.

The disk brushes 15 and 16 can be made of a sponge-like flexible porous member such as a synthetic resin foam, a fibrous member, or a bundle of Iaa.

Further, the roll brush cleaning section 5 cleans the upper and lower surfaces of the work l using upper and lower roll brushes 27 and 27 having cylindrical cleaning surfaces around them.
7.27 are rotatably supported on the left and right side frames 10.10 around a horizontal axis, and a plurality of sets are arranged in the advancing direction of the rollers l, and each roll brush 27.27 is driven by a motor 28. It is configured.

The roll brush 27.27 is similar to the disc brush 15.
．． Similarly to 18, it can be constructed from a sponge-like flexible porous member such as synthetic resin foam, a fibrous member, or a material in which fibers are implanted radially.

In addition, in these disk brush cleaning section 4 and roll brush cleaning section 5, in order to wash the workpiece 1 while being held between the conveyance rollers 3, clamping rollers 3b are provided on some of the conveyance rollers 3. It is set up.

Drying section 6 provided after the roll brush cleaning section 5
As shown in detail in FIG. 5, along the transport path 2 of the workpiece 1, there is a water supply means 30 for wetting the surface of the workpiece 1 to be dried, and a drying air supply means 30 for the workpiece l whose surface is wet. Air knives 31 and 32 that inject air are arranged in sequence.

The water supply means 30 has an upper water supply nozzle 33 that supplies water to the upper surface of the workpiece 1, and a lower water supply nozzle 34 that supplies water to the lower surface of the workpiece 1. The upper water supply nozzle 33 has long slit-shaped openings 33a and 34a in the direction across the path 2, and the upper water supply nozzle 33 wets the upper surface of the workpiece 1 by flowing water down along the partition wall 35, and the lower water supply nozzle 34 wets the upper surface of the workpiece 1. , the lower surface of the work l is wetted with the water coming out from the opening 34a.

In addition, in order to reliably wet the entire surface of the work l, the openings 33a of the water supply nozzles 33 and 34 are
, 34a are desirably formed to have at least the same length as the width of the work l.

Moreover, instead of using the slit-shaped opening as described above, a porous pipe can also be used.

On the other hand, the air knives 31 and 32 have slit-shaped air outlets 31a and 32a that are long in the direction across the conveyance path 2 and have at least the same length as the width of the workpiece l, and these air outlets 031a and 32a are connected to the workpiece. The upper and lower air knives 31, 31 and 32, 32 facing each other with the conveyance path 2 in between are opened toward the rear in the direction of movement of the
A plurality of sets (two sets in the embodiment) are arranged in the direction of movement of the work l, and two sets of air knives 31 are arranged in the front and rear of the work l.
．． Air outlets 31a, 31 at 31 and 32.32
Between a and 32a, 32a, the conveyance path 2 is surrounded by a cover plate a7. Therefore, the area surrounded by the cover plate 37 becomes a high pressure area due to the air jetted from the air knives 31.31 and 32.32 on both sides, and moisture attached to the work l is difficult to enter.

The distance between the two sets of F-knives 31J1 and 32.32 is appropriately determined depending on the drying conditions, such as the size of the workpiece and the amount and strength of air injection.

In addition, in FIGS. 1 and 2, 8 in the figure is a supply section for uncleaned workpieces provided on the inlet O side of the conveyance path 2, and 9 is a takeout section for cleaned workpieces provided on the outlet side thereof. In the take-out section 9, in order to prevent the cleaned workpiece 1 from being contaminated by contact with the conveyance roller 3, the conveyance roller 3 is arranged so that the center part thereof has a small diameter, as shown in FIG. Formed.

It is configured so that the workpiece 1 can be supported in a line contact state.

In the cleaning machine having the above configuration, the workpiece 1 is
When the workpiece 1 is supplied onto the conveyance roller 3 at Cleaning surface 1 parallel to 1
5a, 1 [upper and lower disc brushes with 1a + 5
．． Both sides are cleaned by IB.

The workpiece l that has passed through the disk brush cleaning section 4 is sent to the next roll brush cleaning section 5, where it passes sequentially between upper and lower roll brushes 27 and 27 arranged in multiple stages in the traveling direction, thereby cleaning these rolls. The brush cleans both sides.

The thus cleaned workpiece 1 is sent to the drying section 6 and dried in the following manner. That is, the workpiece 1 is placed in the drying section 6.
When the work l passes through the water supply means 30, water is supplied from the upper and lower water supply nozzles 33, 34, and the upper and lower surfaces of the work l are entirely wetted. And the workpiece has wet top and bottom surfaces! advances to the position of the air knife 31.32, and while passing through the two sets of air knives 31.31 and 32.32, each air outlet 31a, 31a and 32a, 32
Moisture is blown away by the air jetted from a, drying it. At this time, since the entire surface of the work l is wet, when the water is blown off by air, the water becomes water droplets and the work l is completely wet! There is no smearing caused by the movement of water droplets.

In addition, two sets of air knives (y) located in the direction of movement of the workpiece 1,
Since the area between 32a and 32a is a high-pressure area due to the air injected from these air jet ports, it is difficult for moisture attached to the workpiece 1 to enter this high-pressure area together with the workpiece 1.
The moisture will be reliably blown away as the workpiece 1 enters this area.

The workpiece I, which has been dried by the moisture being blown away, is sent to the takeout section 9 and taken out.

Note that the above-mentioned carrying-in of the work l to the supply section and carrying-out I± from the take-out section 9 can be carried out manually or automatically by a suitable automatic mechanism.

[Effects of the Invention] As described above, according to the present invention, after the surface of the workpiece is completely wetted with water, it is dried by jetting air from air knives arranged in multiple stages in the direction of movement of the workpiece. When water is blown away by air, the water does not turn into water droplets and move on the workpiece, and it is possible to reliably prevent the occurrence of bleeds due to the movement of water droplets. Due to the high pressure area
Moisture attached to the workpiece is prevented from penetrating into the high-pressure region, and the moisture can be effectively and efficiently removed.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an example of a washing machine having a drying device of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is an enlarged perspective view of main parts showing the drive mechanism of the conveying roller, and Fig. 4 is a disk FIG. 5 is an enlarged perspective view of the main part showing the structure of the brush cleaning section 4, FIG. 5 is an enlarged sectional view of the main part showing the structure of the drying device, and FIG. 6 is an enlarged front view showing an example of the structure of the conveying roller. ■ - Workpiece, 2 - Conveyance path, 30 - Water supply means, 31.32 - Air knife. 31a, 32a - Air outlet. -, 4+

Claims (1)

[Claims] 1. A water supply means for wetting the workpiece and an air knife for injecting air toward the workpiece from a slit-shaped air outlet are sequentially arranged along the conveyance path for conveying the plate-shaped workpiece, and A drying device for a plate-like workpiece, characterized in that a plurality of air knives are arranged on both sides of a conveyance path in the direction of movement of the workpiece.