JPH0747491B2 - Drop guide device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drop guide device used by being attached to a gob cutting device of a glass gob feeder.

[0002]

2. Description of the Related Art A pair of shear arms having a shear blade at the tip is provided below the orifice of a glass gob feeder, and molten glass extruded from the orifice is cut to form a glass gob. However, as it is, the glass gob is pushed laterally by the lower shear blade and falls diagonally, so in order to prevent this, the drop guide is conventionally located at a position corresponding to the gob diameter directly below the lower shear blade. It is installed.

Although such a conventional drop guide can be adjusted in position to some extent by a screw, it is usually adjusted manually when a molding type is changed or when a problem occurs during molding. It will only be seen. It is fixed to the tip of the shear arm during molding. However, the present inventors have been researching a technique for alternately supplying a plurality of types of glass gobs having different weights from the same glass gob feeder, and for this reason, the diameter of the glass gobs also changes during molding. Therefore, there has been a problem that the conventional drop guide whose position cannot be changed during molding cannot properly control the posture of a plurality of types of glass gobs having different diameters.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art and controls the attitude of each glass gob even when a plurality of types of glass gobs having different weights are alternately supplied from the same glass gob feeder. The present invention has been completed in order to provide a drop guide device capable of appropriately performing the above.

[0005]

SUMMARY OF THE INVENTION The present invention, which has been made to solve the above problems, has a drop guide arm provided with a drop guide at its tip, which is pivotally attached to one of a pair of shear arms for cutting a glass gob. The drop guide arm is characterized in that a control mechanism capable of changing the position of the drop guide for each operation of the shear arm is attached to the rear part of the drop guide arm. As the control mechanism, a cam that engages with the rear end of the shear arm and a control motor that moves the cam can be used.

[0006]

The present invention will be described in more detail below with reference to the embodiments shown in the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a pair of shear arms having a shear blade 2 at the tip thereof, which is periodically opened and closed by a mechanism known in the art to cut molten glass to form a glass gob. A drop guide arm 3 is pivotally attached by a shaft 4 to the side of the shear arm 1 to which the upper shear blade 2 is attached. The drop guide arm 3 has a drop guide 5 at its tip and a roller 6 at its rear end.

On the other hand, such a drop guide arm 3
A control mechanism 7 is provided in the rear part of the. The control mechanism 7 is attached to the fixed base side supporting the shear arm 1. The control mechanism 7 engages with the roller 6 at the rear end of the drop guide arm 3 and the cam 8 with the king pin 9 of the shear arm 1. Feed screw 10 for moving in the direction of approaching and leaving
A control motor 11 such as a servo motor for rotating 0 is included. A signal is sent to the control motor 11 from the entire controller of the glass molding machine, and the shear arm 1
It is possible to change the position of the drop guide 5 by rotating the feed screw 10 and swinging the drop guide arm 3 for each operation of 1. It should be noted that the cam 8 is shaped to match the locus of the roller 6 at the rear end of the drop guide arm 3 that moves with the opening and closing of the shear arm 1 as shown in FIGS.

[0008]

In the apparatus of the present invention constructed as described above, the control motor 11 is rotated for each operation of the shear arm 1 in response to a signal from the overall controller of the glass forming machine, and the cam 8 is driven by the feed screw 10. It can be moved. As a result, the drop guide arm 3 in which the roller 6 at the rear end is engaged with the cam 8 also moves about the shaft 4 for each operation of the shear arm 1, and the drop guide 5 at the tip thereof.
You can change the position of. Therefore, even when glass gobs having different weights and diameters are alternately created, the position of the drop guide 5 can be always set to an appropriate position corresponding to the diameter of the glass gob, and the attitude control of each glass gob can be accurately performed. Is possible.

Although the combination of the cam 8 and the control motor 11 is adopted as the control mechanism 7 in the above embodiment,
The mechanism is not necessarily limited to this as long as it is a mechanism that can change the position of the drop guide arm 3 quickly and accurately.

[0010]

As described above, the present invention can appropriately control the attitude of each glass gob even when a plurality of types of glass gobs having different weights are alternately supplied from the same glass gob feeder. Therefore, as a solution to the drawbacks of the conventional drop guide fixed to the shear arm, there is a great contribution to the development of the industry.

[Brief description of drawings]

FIG. 1 is a plan view illustrating an embodiment of the present invention.

FIG. 2 is a plan view illustrating an embodiment of the present invention, showing a state where a shear arm is wide open.

[Explanation of symbols]

 1 Shear Arm 2 Shear Blade 3 Drop Guide Arm 4 Axis 5 Drop Guide 6 Roller 7 Control Mechanism 8 Cam 9 King Pin 10 Feed Screw 11 Control Motor

Claims (2)

[Claims] 1. A drop guide arm having a drop guide at its tip is pivotally attached to one of a pair of shear arms for cutting a glass gob, and a drop guide arm is attached to the rear portion of the drop guide arm for each operation of the shear arm. The drop guide device is equipped with a control mechanism capable of changing the position. 2. The drop guide apparatus according to claim 1, wherein the control mechanism includes a cam that engages with the rear end of the shear arm and a control motor that moves the cam.