JPH0654746U - Glass tube cutting equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a glass tube cutting device capable of regularly and reliably supplying a small amount of water to a cutting blade to prevent cutting mistakes. [Structure] A cutting blade (1) that rotates in relation to a drawing speed of a glass tube (11) and is supplied with water through a pipe (8).
In the glass tube cutting device that cuts the glass tube (11) at a constant size according to the above, water was sent by air through the pipe (8). Further, the water is atomized by the air through the pipe (8) and sent out.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a glass tube cutting device for cutting a continuously drawn glass tube into a predetermined length.

[0002]

[Prior art]

 The glass tube is produced by the equipment mainly using the Dunner machine. The Dunner machine supplies a ribbon-shaped molten glass (hereinafter referred to as glass material) at a constant flow rate to the upper surface of the outer circumference of a rotating sleeve that is inclined with its tip facing downward, and the glass material is rotated around the sleeve by rotating the sleeve. It is installed in front of the tube-drawing machine by drawing air from the rear end of the sleeve while winding it around the tube and pulling it at a constant speed with the roller of the tube-drawing machine installed several tens of meters from the sleeve at a constant speed. Glass tubes are continuously produced by cutting with a cutting device to a certain size.

The cutting device employs a chill cut method in which a cutting blade containing water is brought into contact with a glass tube which is still in a high temperature state, and a thermal shock causes a crack to be generated to cut the glass tube.

[0004]

[Problems to be solved by the device]

 The above-mentioned chill-cut type cutting device needs to supply an appropriate amount of water to the cutting blade, and therefore water is always supplied through the water supply pipe, but the required amount of water is very small. However, there was a drawback that it stagnated in a narrow pipe, the water supply was likely to be irregular, and a cut error occurred.

An object of the present invention is to provide a glass tube cutting device capable of regularly and reliably supplying a minute amount of water to a cutting blade to prevent a cutting error.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a glass tube having a constant size by a cutting blade that rotates in relation to the drawing speed of the glass tube and is supplied with water through the tube. A glass tube cutting device that cuts each piece is designed to feed water by air through the above pipes. At that time, the water may be atomized by air through the pipe to be sent out.

[0007]

[Action]

 Since the water is sent by air, it is possible to reliably send an appropriate amount of water to the position of the cutting blade in a minute amount and prevent a cutting error. Further, since the water is atomized and sent out, it is possible to reliably supply a small amount of water to the cutting blade and prevent a cutting error.

[0008]

【Example】

 1 is a schematic vertical sectional side view showing a first embodiment of the device of the present invention, FIG. 2 (A) is a schematic vertical sectional side view showing a second embodiment of the present device, and (B) is a cutting blade portion. FIG. 3C is a partially enlarged cross-sectional view showing another embodiment of the cutting blade. First, FIG. 1 illustrates a horizontal glass tube cutting device, in which the cutting blades are installed at two locations. In the figure, (1) and (1) are cutting blades, and (2) and (2). Is a rotating arm, (3) is a rotating shaft, (4) is a bearing portion, (5) and (5) are water supply pipes, (6) and (6) are air supply pipes, and (7a) and (7b) are water receiving containers. , (7c) are covers, (8) and (8) are cooling water supply pipes, (9) is a cam, (10) and (10) are cam rollers, and (11) is a glass pipe.

The cutting blades (1) and (1) are attached to the tips of the rotating arms (2) and (2), and the rotating arms (2) and (2) move up and down on a vertical rotating shaft (3). It is mounted so that it can swing in any direction. The rotating shaft (3) is rotatably supported by the bearing portion (4), and is rotationally driven by a drive mechanism (not shown) at a constant rotation speed related to the pipe drawing speed of the Danner machine. During rotation of the rotary shaft (3), the rotary arms (2) and (2) swing up and down via the cam rollers (10) and (10) by the cam (9) provided on the table, and when they descend, The glass blade (11) is chill cut by the cutting blade (1).

Water is supplied to the cutting blades (1) (1) by air through the water supply pipes (8) (8). The water supply pipes (8) (8) are piped through the rotary shaft (3) and guided to the cutting blades (1) (1). The water supply pipes (8) and (8) are connected to the water supply pipes (5) and (5) and the air supply pipe (6) (through the water receiving containers (7a) and (7b) at the upper end of the rotating shaft (3). 6) is connected. A cover (7c) is arranged on the upper surface of the water receiving container (7a) (7b) to prevent dust and the like from entering, and the water supply pipes (5) and (5) and the air supply pipe are attached to the cover (7c). (6) (6) is supported. The water receiving containers (7a) and (7b) rotate integrally with the rotating shaft (3), but the cover (7c), the water supply pipes (5) and (5), and the air supply pipes (6) and (6) are in a stationary state. Held in. Water is supplied to the water pipes (5) and (5) in a drip state, and the upper portions of the water receiving containers (7a) and (7b) are left open. The water droplets supplied in the form of drip are only the flow action due to its own weight, due to the accumulated air in the water supply pipes (8) (8), the resistance in the pipes, etc., up to the cutting blades (1) (1) (5) When water cannot be supplied at the same timing as the drip-shaped water supply timing of (5), and several drops are combined to cause excessive water supply or an irregular state such as water supply being interrupted. However, due to the pressure of the air supplied from the air supply pipes (6) and (6), the water droplets supplied from the water supply pipes (5) and (5) can be reliably separated by one blade at the same timing ( 1) Up to (1) can be supplied, and there is no irregular condition such as excessive water supply or interruption of water supply. No. This ensures that the glass tube (11) is chill cut. In addition, excessive water supply is not preferable because the cut surfaces of the glass tube (11) become uneven.

Next, the configuration of the second embodiment of FIG. 2A will be described. In the second embodiment, the rotating shaft (3) of the rotating arm (2) is rotatably supported by the bearing portion (4) in a horizontal state, and the cutting blade (1) is attached to the tip of the rotating arm (2). The water supply pipe (8) to the cutting blade (1), which is fixed via (1a), is installed so as to penetrate through the rotary shaft (3), and the rear end of the rotary shaft (3) rotates. It is connected to a water-air mixed fluid supply pipe (12) via a joint (7d). The water-air mixed fluid supply pipe (12) is connected to a water-air mixer (13), and the water-air mixer (13) includes a water supply pipe (14) and a compressed air supply pipe. (15) and are connected. The water supply pipe (14) is connected to the water tank (17) via a pump (16) whose discharge rate can be adjusted. A filter (18) with a check valve is attached to the starting end of the water pipe (14). A water pipe (19) is connected to the water tank (17), and a solenoid valve (22) whose opening and closing is controlled by a liquid level sensor (20) via a controller (21) is connected to the water pipe (19). is set up. An air pressure control valve (23) is installed in the compressed air supply pipe (15) to adjust the air pressure supplied to the water-air mixer (13). On the other hand, the amount of water supplied to the water-air mixer (13) by the water supply pipe (14) is adjusted by the discharge amount of the pump (16), and the pressure adjusted by the air pressure control valve (23). It is supplied to the cutting blade (1) from the water-air mixed fluid supply pipe (12) mixed with the compressed air of (1) through the rotary joint (7d) and the water supply pipe (8).

The structure of the part of the cutting blade (1) has the form of (B) and (C) of FIG. 2. First, in (B) of FIG. 2, the water channel (1b) is attached to the cutting blade mount (1a). ) Is formed, and an atomizing nozzle (1c) such as a porous sintered body is installed at the tip of the water channel (1b), and the water-air mixed fluid is atomized from the atomizing nozzle (1c). The spray blade is directly supplied to the tip of the cutting blade (1). Next, in FIG. 2C, the water channel (1b) formed in the cutting blade mounting base (1a) is opened at the base of the cutting blade (1), and the water supplied from the water supply pipe (8) is supplied. The air-mixed fluid is fed to the base of the cutting blade (1).

The configuration of the second embodiment is as described above, and the discharge amount of the pump (16) and the air pressure of the air pressure control valve (23) are properly adjusted and set in advance. , The water is regulated by compressed air from the water-air mixed fluid supply pipe (12) through the rotary joint (7) and the water supply pipe (8) to the cutting blade (1) regularly. Definitely supplied.

[0014]

[Effect of device]

 According to the first aspect of the present invention, it is possible to supply the cutting blade in minute amounts of water in a regular and reliable manner by the air pressure, and it is possible to significantly reduce cut mistakes in the glass tube chill cut method. You can

According to the second aspect of the invention, since the water is supplied in the atomized state, it is possible to reliably supply a very small amount of water.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional side view showing a first embodiment of the device of the present invention.

2A is a schematic vertical sectional side view showing a second embodiment of the device of the present invention, FIG. 2B is an enlarged sectional view of a cutting blade portion, and FIG.
FIG. 4 is a partially enlarged cross-sectional view showing another embodiment of the cutting blade.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutting blade 2 Rotating arm 3 Rotating shaft 4 Bearing part 5 Air supply pipe 6 Water supply pipe 7a, 7b Water receiving container 7d Rotating joint 8 Water supply pipe 11 Glass pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Masahiko Yoshikawa 2-7-1, Harashira, Otsu City, Shiga Prefecture Inside NEC Denki Glass Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A glass tube cutting device that rotates in relation to a drawing speed of a glass tube and cuts the glass tube into a predetermined size by a cutting blade to which water is supplied through the tube, by air through the tube. A glass tube cutting device characterized by sending water. 2. The glass tube cutting device according to claim 1,
A glass tube cutting device, characterized in that water is atomized by air through the pipe to be delivered.