JPH03137034A - Device for driving sheet glass rolling roll - Google Patents

Abstract

PURPOSE:To prevent the discontinuous rotation of the roll due to backlash by interposing a specified epicyclic reduction gear between a couple of rolling roll and motor. CONSTITUTION:The rotating power of motor 10 and 10' is transmitted to the sun roller 15 of the epicyclic reduction gears 12 and 12' through couplings 11 and 11', and transmitted to epicyclic rollers 16 and 16 through the crowning elastic deformation of a fixed ring 17 due to a preload F, a pressing load P acting between the rollers 15 and the epicyclic rollers 16 and 16 and a pressing load P acting between the rollers 16 and 16 and the ring 17 to produce a rolling transmission power UT. The revolution 20 of the rollers 16 and 16 is caused by the output shaft of the gears 12 and 12' as the rolling transmission power UT for the rollers 16 and 16 and transmitted to a couple of rolling rolls 2 and 2' freely rotatably pivoted through V belts 13 and 13'.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a driving device for a plate glass rolling roll, and in particular, a buffing device for a power transmission device is used for a sloped glass rolling roll of a roll-out type plate glass rolling machine. The present invention relates to an improvement in a deceleration drive means for maintaining rotational drive conditions in which a crash does not spread.

[Conventional technology]

2. Description of the Related Art A roll-out type rolling forming apparatus is known as a plate glass rolling forming apparatus, in which molten glass is supplied between a pair of rolling rolls, and the rolling rolls are continuously rotated to roll and form the glass. The drive device for the roll rolls is generally of a type in which power generated by a motor is transmitted to the rolls via a speed reduction device consisting of a worm and worm gear, and power transmission members such as gears and chains. Third
The figure is a schematic perspective view showing a conventional example of a roll-out type plate glass rolling forming apparatus. The molten glass (
1) is supplied between a pair of rolling rolls (2) (2'),
The gap formed between the rolling rolls (2) (2')
3), the sheet glass (4) is rolled in the direction of decreasing thickness while being stretched in the width direction to form a plate glass (4). Motor (5) (5'
The power generated in the rolling roll (2) is transferred to the rolling roll (2) via the power transmission device (9) consisting of the belt (6) (6''), worm (7) (7°), and worm gear (8) (8'). (2
”).

(Problem to be solved by the invention) The rolling roll (2) (
2') is rotated, the plate glass (4) is made of a material such as soda glass whose viscosity changes less with temperature changes, and the thickness of the plate glass (4) is at least about 2 m. In some cases, this is not a particular problem, but the material of the plate glass (4) is special and the rate of viscosity change with respect to temperature changes is large, and the wall thickness of the plate glass (4) is 2.
fl or less, the molten glass (1) is cooled by pressure welding with the rolling roll (2) (2°) equipped with a cooling water circulation pipe inside, resulting in an increase in viscosity. The rolling resistance increases due to the pressure increase during rolling. This increase in rolling resistance is transmitted as a reaction force to the power transmission device (9), so the worm (7) (7°) and worm gear (8) (8°), which are the constituent members of the power transmission device (9), Intermittent rotation occurs due to the backlash that exists between the two. For this reason, it becomes impossible for the rolling rolls (2) (2') to rotate smoothly, and a worm gear is inserted between the longitudinal direction of the glass plate (4) that is rolled in one rotation of the rolling rolls (2) (2'). (8) Streaks (T), (T), etc. occur at intervals corresponding to the pitch of the number of teeth in (8'). Muscle (T)
The occurrence of (T)... can be interpreted as a phenomenon in which the thickness of the plate glass (4) locally increases by several microns, but the surface unevenness caused by these streaks (T) (T)... reduces the reflectance of the glass. Since it is extremely high, it is visually noticeable and significantly reduces the quality value of the plate glass (4).

[Means to solve the problem]

As a means for solving the above problems, the present invention provides an elastically deformable fixed ring as a speed reduction device for the rolling rolls, between a pair of rotatably supported rolling rolls and a motor that transmits rotational force to the rolling rolls. , a plurality of planetary rollers that are press-supported to be able to revolve and rotate on the inside of this fixed ring, and a sun roller that is press-supported to be able to rotate and rotate on the inside of these planetary rollers, and a planetary roller that transmits power by frictional force. The present invention provides a drive device for a plate glass rolling roll, which is characterized by having a speed reducer interposed therebetween.

[Effect]

By interposing a planetary roller speed reducer that transmits rotational force purely through frictional force as a speed reduction device between the plate glass rolling roll and its drive motor, the conventional system consisting of gears, chains, worms, worm gears, etc. To completely eliminate the occurrence of intermittent rotation due to backlash that cannot be avoided in a power transmission device, and thereby to avoid the occurrence of streaks, which is a problem when rolling molten glass with a roll-out rolling device.

〔Example〕

First FI! J is a schematic perspective view showing a specific example of the device of the present invention, and FIG. 2 is a diagram illustrating (a) and (b) the power transmission mechanism and power transmission principle of the planetary roller speed reducer. In the following description, the same constituent members as those in FIG. 3 illustrating the conventional device are indicated by the same reference numerals, and explanations of the same items will be omitted. Motor (10) (10°)
The power generated at the coupling (11) (11°
) to the planetary roller reducer (12) (12°), and then to the rolling rolls (2) (2') via the belts (13) (13').

The planetary roller reducer (12) (12°) is shown in Figure 2 (
As shown in (a), a sun roller (15) is rotatably arranged in the center, and a plurality of planetary rollers (16) (16)... are arranged in a circumscribed state on the outside of this sun roller (15) to revolve and rotate. These planetary rollers (16) (16) are supported by pressure so as to be rotatable, and an elastically deformable fixing ring (17) is pressed against the outside of these planetary rollers (16). Motor (10) transmitted to sun roller (15)
(10°) rotational driving force is applied to the fixed ring (17) by preload (F) as shown in Figure 2 (a) and (b).
Elastic deformation of the glue rowing, pressure load (P) acting between the sun roller (15) and the planetary rollers (16) (16), and the planetary rollers (16) (16).
... and the fixing ring (17) (pressure load (P)
is transmitted to the planetary rollers (16) (16)... to generate rolling transmission force (UT). The orbital motion (20) of the planetary rollers (16) (16) is the rolling transmission force (UT) of the planetary rollers (16) (16)...
as the output shaft of the roller reducer (12) (12°)
(not shown), and ■belt (13) (13
”) to the rolling rolls (2) (2').

〔Effect of the invention〕

By using an A-star roller speed reducer as a means of transmitting power to the rolling rolls, the occurrence of intermittent rotation due to buff crash, which was a problem with conventional power transmission devices consisting of gears, chains, worms and worm gears, etc., is avoided. will disappear. As a result, even when large rolling resistance occurs during roll-out forming, it is possible to transmit a clear, constant rotational power to the rolling rolls.Therefore, there is no risk of streaks forming on the surface of the sheet glass. , remarkable effects are exhibited in stabilizing the rolling process and improving the quality of plate glass.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing a specific example of the device of the present invention, and FIG.
Figures (a) and (b) are drawings explaining the power transmission mechanism and power transmission principle of the planetary roller reducer. Figure 2 (a) is a sectional view, and Figure 2 (b) is an explanation of the power transmission principle. It is a diagram. Moreover, FIG. 3 is a schematic perspective view of a conventional device. (2) (2°)--Rolling roll, (4)--Plate glass, (12) (12')--Planetary roller reducer,
(17) --111 fixed ring, (16) - Planetary roller, (15) - Sun roller.

Claims (1)

[Claims] (1) An elastically deformable fixing ring, which serves as a speed reduction device for the rolling rolls, between a pair of rotatably supported rolling rolls and a motor that transmits rotational force to the rolling rolls;
A planetary roller speed reducer that transmits power by frictional force, consisting of a plurality of planetary rollers that are supported by pressure on the inside of this fixed ring so that they can revolve and rotate, and a sun roller that is supported and pressed against the inside of these planetary rollers so that they can rotate on their own axis. A driving device for a plate glass rolling roll, characterized in that a rolling machine is provided.