JP2815811B2 - Plate glass conveyor in plate glass pre-drying machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for transporting sheet glass in a washing and drying machine for thin sheet glass.

[0002]

2. Description of the Related Art It is known that a glass sheet being transported is washed with a brush roll and the washed glass sheet is dried with an air knife.

However, if a ring-roll type conveyor is used to convey the glass sheet in the drying process, the washed glass sheet runs on the roll, so that dirt adheres to the glass sheet surface due to contact between the roll and the glass sheet surface.

Therefore, as shown in FIGS. 3 and 4, the left and right side rollers 1, 1 sandwich the both side edges of the sheet glass A to convey the sheet glass A, and the upper and lower air knives 2 carry the two sheets of the sheet glass A. The water adhering to the surface is drained and dried so that the roll surface does not adhere to the plate surface of the sheet glass.

A drum-shaped side roller is used, and a frame bearing each side roller can move forward and backward by the action of a cylinder. A side roller is pressed against the edge to ensure the conveyance of the sheet glass.

[0006]

When the above-mentioned transport system is adopted, when the sheet glass becomes large, distortion occurs due to its own weight, and the contact pressure of the side roller against the side edge of the sheet glass becomes weak. For this reason, there was a problem that the plate glass could not be smoothly transported.

Further, when the warp of the sheet glass increases due to the distortion, a large variation occurs between the upper and lower air knives with respect to both sheet surfaces of the sheet glass. For this reason, there also arises a problem that draining of both plate surfaces of the plate glass is not performed smoothly.

SUMMARY OF THE INVENTION An object of the present invention is to make it possible to carry a sheet glass without causing distortion.

[0009]

In order to solve the above-mentioned problems, the present invention conveys a sheet glass supplied on a roller conveyor and pre-cleans the upper and lower plate surfaces of the sheet glass being conveyed by a pre-cleaning device. Then, the sheet glass conveyed from the roller conveyor is conveyed while sandwiching both side edges of the sheet glass by two left and right serial side rollers, and both sheet surfaces are drained by an air knife. An upper air injection device and a lower air injection device for respectively injecting air onto an upward plate surface and a downward plate surface of the glass sheet above and below the nipping conveyance path by the side rollers, and the lower air injection device A configuration that extends to the position where the sheet glass discharged from the side roller is taken out is adopted.

[0010]

With the above construction, air is blown from the upper air ejecting device onto the upward plate surface of the plate glass which is conveyed while nipping the side edge by the side roller, and the lower air surface is blown onto the downward plate surface of the plate glass. Air from the injection device is blown, thereby eliminating distortion due to the weight of the sheet glass.

Further, the sheet glass sent forward from the side rollers is floated by air blown from the lower air ejecting device to prevent breakage due to dropping at the time of removal.

[0012]

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

As shown in FIGS. 1 and 2, a sheet glass A supplied to the upstream side of the roller conveyor 11 by using a manual operation or a loading machine is conveyed toward the downstream side of the roller conveyor 11 while being conveyed. Both upward and downward plate surfaces of the glass sheet A are cleaned by the cleaning device B.

In the above-mentioned cleaning apparatus B, two sets of brush rolls 12 and 12 are arranged in front and back in the figure, and two sets of the brush rolls 12 and 12 are transmitted from the motor 13 by a chain or a belt. The rotation is performed via the mechanism 14.

Of course, at the time of cleaning by the brush rolls 12, 12, the cleaning water is jetted radially (not shown) from the nozzles or by using the passage of the shaft center of the brush rolls.

Although the sheet glass A supplied onto the roller conveyor 11 is conveyed by a pinch roll 15 in the drawing, the parallel rollers constituting the roller conveyor 11 are driven by the engagement between the sprocket and the drive chain. Then, the sheet glass A may be transported.

Further, the washed plate glass A discharged from the downstream end of the roller conveyor 11 is arranged such that both side edges thereof are sandwiched by two left and right serial side rollers 16 to receive a load and to be conveyed.

A drum-shaped side roller 16 is used to keep the clamp position (running line) constant, and a frame 17 for bearing each side roller 16 is connected to a guide rail. Guided by a guide device 18 by engagement with a slider, the slider 17 slides in the approaching and separating directions, and the frame 17 connected to the stationary cylinder 19 is advanced by the extension action of the cylinder 19, while the side edge of the sheet glass A is The side roller 16 is pressed (received).

Before the sheet glass A is received, the frame 17 is retracted due to the contraction of the cylinder 19. Each side roller 16 is configured to rotate in one direction by engagement of a chain running by operation of a motor with a sprocket of the side roller 16.

Further, drying air knives C, C are provided above and below the holding and conveying path sandwiched by the side rollers 16 for blowing air onto the upward and downward surfaces of the sheet glass A to drain the glass.

The above-mentioned air knives C, C are composed of an upper pipe 20 having an injection slit 20 'on the lower surface and a lower pipe 20 having an injection slit 20' on the upper surface.
0 is connected to an air box 22 (not shown) with a blower for supplying high-pressure air through a hose 21.

Further, the holding plate glass A is
An upper air ejecting device 31 and a lower air ejecting device 32 for ejecting air to the upward and downward plate surfaces of the sheet glass A are provided above and below the transport path.

The upper air injection device 31 and the lower air injection device 32 are provided with an infinite number of slits or small holes.
And a hose 3 in this box 34
The blower 36 is connected to the glass sheet A through the nozzle 5, and air having a uniform pressure is blown from the injection port 33 to both sheet surfaces of the sheet glass A, so that distortion (warping or the like) generated by the sheet glass A under its own weight is eliminated.

Further, the lower air jet device 32 is extended forward from the terminal side roller 16, that is, in the discharge direction of the sheet glass A, and the washed and dried sheet glass A discharged from the side roller 16 is taken out while floating and dropped. Eliminates damage due to

In the figure, reference numeral 23 denotes a washing water receiving tray, and reference numeral 24 denotes a washing water falling tank.

[0026]

According to the present invention, there is provided a sheet glass transport apparatus comprising:
Since it is configured as described above, there is no distortion due to its own weight in the sheet glass being conveyed by the air blown to both sheet surfaces of the sheet glass, and the conveyance of the sandwiched sheet glass by the side rollers is ensured, and both sheets of the sheet glass are Good draining (drying) without dirt can be performed while maintaining a non-contact state with the surface. In particular, pre-drying of thin plate glass can be performed. The glass sheet can be easily taken out, and there is no damage caused by dropping the glass sheet at the time of taking out.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway side view.

FIG. 3 is a plan view of a conventional example.

FIG. 4 is a front view of a conventional example.

[Explanation of symbols]

 Reference Signs List A sheet glass B cleaning device C air knife 11 roller conveyor 12 brush roll 16 side roller 17 frame 18 guide device 19 cylinder 20 pipe 21 box 31 upper air injection device 32 lower air injection device

Claims (1)

(57) [Claims] 1. A sheet glass fed on a roller conveyor is conveyed, and upper and lower plate surfaces of the sheet glass being conveyed are pre-cleaned by a pre-cleaning device, and both side edges of the sheet glass conveyed from the roller conveyor are left and right. In a sheet glass pre-drying dryer in which both the sheet surfaces are drained by an air knife while being pinched and conveyed by the two series of side rollers, the upwardly directed sheet surface of the sheet glass is placed above and below the pinch conveyance path by the side rollers. An upper air injection device and a lower air injection device for respectively injecting air onto the downwardly facing plate surface, and the lower air injection device is extended to a position where the glass sheet discharged from the side roller is taken out. A sheet glass transport device in a sheet glass pre-drying machine.