JPH08259246A - Apparatus for molding glass article by using centrifugal force - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove the electromagnetic parasitic effect at the time of supplying electric power to a motor and to reduce the inertia moment of a rotary rack with a forming apparatus utilizing centrifugal force.

SOLUTION: The motor 21 of the forming apparatus for producing glass products by utilizing the centrifugal force is fixed to a chassis 3 of the forming apparatus 1. Cylindrical sleeves 25 arranged concentrically by the same number as the number of forming units 16 are mounted at a shaft 6 for rotating the rotary rack 15. The respective sleeves 25 are adapted to be rotatable with respect to the shaft 6 and the other sleeves 25. The sleeves 25 are formed shorter in their length as the sleeves exist in an outward direction from the shaft 6, by which the ends of the plurality of sleeves 25 are formed stepwise. The bottom ends of the sleeves 25 are connected to the shaft part of the corresponding one motor 21 and the top ends of the sleeves 25 are connected to the shaft part 18 installed integrally, rotatably and coaxially to a corresponding one mold 17.

COPYRIGHT: (C)1996,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for forming glass products by utilizing centrifugal force.

[0002]

2. Description of the Related Art A molding apparatus utilizing centrifugal force is constructed by including a plurality of molding units mounted on a carousel that rotates around a vertical axis. Rotation of the carousel causes each molding unit to be continuously moved against the conveyor to eject the molded product. The mold of each molding unit is rotationally driven by a corresponding individual motor. These motors are installed on a carousel, and electric power is supplied to each motor via a slip ring.

The electronic system that controls these motors may or may not be installed on a carousel, depending on the type of molding equipment. If not mounted on a carousel, then the use of slip rings fixed to the shaft of the molding machine is also required in order to connect these control electronic systems with the respective motors. . Further, the carousel includes a unit for cooling the mold with water and a unit for cooling the electronic system installed on the carousel with air. Power supply using a slip ring is also required for these cooling units.

[0004]

The conventional molding apparatus as described above has a number of serious drawbacks. The problem is that the slip ring is strongly affected by the electromagnetic parasitic effects generated by the various components of the molding machine. This effect can cause erroneous operation of the motor, control system, and cooling system drives described above, which can result in defects in the manufacture of the product, or can cause the molding machine to shut down suddenly. In addition, the brushes of these slip rings are subject to severe wear and require frequent and regular maintenance.

Leakage of cooling water into these slip rings can also result in a very negative effect on the molding equipment. Further, since the carousel supports the motor, the electronic system, and the cooling unit, and the added weight increases the moment of inertia of the carousel, the chassis of the molding machine and the carousel structure have a large inertia. It had to be designed to be suitable for supporting moments. Due to the above constraints,
There has been a problem that the cost of manufacturing the molding apparatus and maintaining the molding apparatus is high. The present invention aims to solve the above problems.

[0006]

A molding apparatus of the above type according to the present invention comprises a plurality of molding units mounted on a carousel. Each molding unit is configured to have a mold that is rotationally driven by a motor.

According to the present invention, each motor is fixedly installed on the chassis of the molding apparatus. And
A plurality of concentrically arranged tubular sleeves are attached to a shaft for rotating the carousel.
These sleeves are installed in the same number as the forming unit. Each sleeve is installed coaxially with the shaft of the rotary rack and is rotatable with respect to this shaft and the other sleeves.
Further, these sleeves are formed so that the length thereof becomes shorter as they are located more outward with respect to the shaft of the carousel, whereby the end portions of the sleeves are arranged in a stepped shape. Further, a lower end portion of the sleeve is connected to a shaft portion of each motor, and an upper end portion of the sleeve is connected to a shaft portion coaxially and rotatably formed integrally with the mold. .

By using the above structure, it becomes possible to transmit the rotational force of the fixed motor to the mold via the respective sleeves. The sleeve is installed coaxially with a shaft that rotates a rotary rack that supports the mold, and is rotatable with respect to the shaft, whereby the rotational force of the motor is transmitted to rotate the mold. .

According to the present invention, electric power is directly supplied to the motor without interposing one or more slip rings. This eliminates the risk of the device malfunctioning under the influence of electrostatic parasitic effects. further,
Since the electronic system that controls the motor and the cooling unit for this system are not installed on the carousel, slip rings to power them are
It is not needed for this reason either.

As described above, since the structure of the forming apparatus is considerably simplified, the moment of inertia of the carousel is also greatly reduced. In addition, wiring for various components,
Greatly simplified. Therefore, the manufacturing and maintenance costs of this molding device are considerably reduced.
Moreover, the potential for water to penetrate into the electronic system is greatly reduced.

According to a preferred embodiment of the present invention, pulleys are installed on the shafts of the respective motors, and the pulleys installed on the respective motors are arranged on different horizontal planes. Pulleys are installed on the shafts formed integrally with the respective molds, and the pulleys installed on the respective shafts are arranged on different horizontal planes. At each end of each sleeve,
A pulley is installed rotatably with the sleeve.
Each of the plurality of pulleys installed in the lower part is arranged on the same plane as the corresponding one of the pulleys installed in the shaft portion of the motor. In addition, each of the plurality of pulleys installed on the upper side is arranged on the same plane as the corresponding one of the pulleys connected to the shaft of the mold. Two pulleys arranged on the same plane are connected by an endless belt wound around each pulley.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION To facilitate understanding of the present invention, the present invention will be described again with reference to the accompanying drawings. These drawings are not intended to be limiting and show one preferred embodiment of the molding apparatus according to the invention.

FIG. 1 is a front sectional view showing a molding apparatus according to the present invention. 2 is a partial sectional view taken along the line II-II of FIG. FIG. 3 is an enlarged cross-sectional view showing the vicinity of the shaft of the molding apparatus according to the present invention.

In the above figures, in particular the plates, balls,
A molding apparatus 1 for glass products using centrifugal force for molding salad balls, dishes and the like is shown in a simplified manner. It is possible to produce all types of containers with this molding apparatus, whether the moldings have axisymmetric, elliptical or many sides.

This molding apparatus includes a bed 2 composed of a chassis 3 and side posts 4 installed on the chassis 3.
And an upper frame 5. Then, it is driven by an appropriate motor unit 7 with gears,
A vertically extending shaft 6 which is borne by a lower bearing 8 and an upper bearing 9 is supported by the chassis 3. The upper bearing 9 is held by a cylindrical protruding member 10 formed integrally with the upper frame 5.

With the shaft 6, the six molding units 1
The carousel 15 on which 6 is installed is supported. The molding units 16 are arranged on the rotary rack 15 at equal intervals in the circumferential direction. Each molding unit 16 includes a molten glass supply mechanism (not shown),
Upper mold (not shown) and lower mold 17
And a shaft portion 18 coaxially installed on the mold 17 for rotationally driving the mold 17.

The shaft portion 18 is supported by a bearing 19. A pulley 20 is fixedly attached to each shaft portion 18. The pulleys 20 attached to the six shafts 18 are arranged on different horizontal planes.

The molding apparatus 1 also has six motors 21 fixed in a box-shaped structure 22 surrounding the chassis 3. Pulleys 23 are fixedly attached to the shafts of the respective motors 21, and the respective pulleys 23 are arranged on different horizontal planes.

Further, the shaft 6 is provided with six cylindrical sleeves 25 arranged concentrically. In addition, each sleeve 25 is installed coaxially with the shaft 6, and through the rolling bearing 26, the shaft 6
And is rotatable with respect to the other sleeve 25.

As shown in greater detail in FIG. 3, the length of the sleeve 25 decreases as it is positioned outward from the shaft 6. As a result, the shortest sleeve 25 is installed on the outermost side, and the ends of the plurality of sleeves 25 are arranged in steps. A pulley 30 is fixed to each end of each sleeve 25. Each of the lower six pulleys 30 is arranged on the same plane as the corresponding one pulley 23 among the pulleys installed in the motor 21. Further, the respective pulleys 30 of the upper six pulleys are arranged on the same plane with respect to the corresponding one pulley 20 among the pulleys fixed to the shaft portion 18 of the mold 17.

The pulley 23 and the pulley 30, and the pulley 20 and the pulley 30 arranged on the same plane are connected to each other by an endless belt 31 wound around the respective pulleys. With the pulleys 20, 23, 30, the sleeve 25, and the endless belt 31, a plurality of motors 21
A power transmission mechanism between the shaft and the plurality of shafts 18 is configured. The respective sleeves 25 are arranged coaxially with the shaft 6 for rotating the rotary rack 15 and are rotatable with respect to the shaft 6, so that the fixed motor 21 and the rotation of the motor 21 can be adjusted. A power transmission mechanism is realized between the mold 17 and the mold 17, which is rotatable.

As described above, by using the present invention, electric power can be directly supplied to the motor 21 without interposing one or a plurality of slip rings fixed to the shaft 6. . This eliminates the risk of the motor malfunctioning under the influence of electrostatic parasitic effects.

Also, the electronic system for controlling the motor 21 and the cooling unit for this system are not installed in the carousel 15. As a result of this, the shaft 6 does not have to be fitted with slip rings and special units for cooling the electronic system.

Furthermore, since the motor is housed in the box-shaped structure 22, the motor is protected against leakage of cooling water from the mold 17.

Since the structure of the molding apparatus 1 is considerably simplified as described above, the moment of inertia of the carousel 15 is greatly reduced. Wiring for the various components is likewise reduced, which significantly reduces the cost of manufacturing and maintaining the molding machine.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a molding apparatus according to the present invention.

FIG. 2 is a partial sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged sectional view showing the vicinity of the shaft of the molding apparatus according to the present invention.

[Explanation of symbols]

 1 Molding Device 3 Chassis 6 Shaft 15 Rotating Rack 16 Molding Unit 17 Mold 18 Shaft 20,23,30 Pulley 21 Motor 25 Sleeve 31 Endless Belt

Claims (2)

[Claims] 1. A molding method comprising a plurality of molding units installed on a rotary rack, each molding unit having a mold rotationally driven by a motor, and manufacturing glass products by utilizing centrifugal force. In the apparatus, each motor (21) is fixed to the chassis (3) of the molding apparatus (1), and a shaft (6) for rotating the carousel (15).
A cylindrical sleeve (25) arranged concentrically with the molding unit (16) is attached to each of the molding units (16), and each sleeve (25) is coaxial with the shaft (6) of the carousel (15). And is rotatable with respect to the shaft (6) and the other sleeves (25), the sleeves (25) being positioned outward from the shaft (6). The length of the sleeve (25) is shortened so that the ends of the sleeves (25) are arranged in a stepped manner, and the lower end of the sleeve (25) is connected to the shaft of the corresponding motor (21). A molding apparatus, wherein an upper end portion of the sleeve (25) is connected to a shaft portion (18) which is integrally rotatable and coaxially installed in one corresponding mold (17). 2. The molding apparatus according to claim 1, wherein a pulley (23) is attached to a shaft portion of each motor (21), and each pulley (23) installed with respect to each motor (21). ) Are arranged on different horizontal planes, and the pulleys (20) are attached to the shafts (18) integrally formed with the respective molds (17), and the pulleys (20) are attached to the respective shafts (18). Pulley (20)
Are arranged on different horizontal planes, and a pulley (30) is attached to each end of each sleeve (25) so as to rotate integrally with the sleeve (25). Each of the pulleys (30) is arranged on the same plane as one corresponding pulley (23) among the pulleys attached to the shaft portion of the motor (21), and the pulleys (30) of the plurality of pulleys installed on the upper side are arranged. Each of the pulleys (30) is arranged in the same plane as the corresponding pulley (20) among the pulleys connected to the shaft portion (18) of the mold (17), and is arranged in the same plane. Two pulleys (23,30;
20 and 30) are wound around the endless belt (3
A molding device characterized by being connected by 1).