JPH05279058A - Apparatus and process for production of glass molding - Google Patents

Abstract

PURPOSE:To enable an increase in the production capacity of the glass molding for a cathode-ray tube the adaptability to the mingled production of many kinds and large-sized products. CONSTITUTION:Plural gob supplying mechanisms, plural press forming devices 11a, b, plural pin mounting devices 4a to 4c, press molding taking out device 6, etc., are provided. These devices are provided along a transfer device 20. A transfer means 1 mounting metallic molds is transferred along circulating routes by a transfer device 20. The gobs on the plural metallic molds are nearly simultaneously press formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing apparatus and a manufacturing method for a glass molded body, in particular, a glass molded body for a cathode ray tube, that is, a panel or a funnel.

[0002]

2. Description of the Related Art As an example of a conventional apparatus for manufacturing a glass molded body, there is JP-A-2-271927 by the present applicant.
This is shown in FIG. 4 as a first conventional example.

The technical idea is to eliminate the die-conveying means called the index turntable shown in the second conventional example shown in FIG. The feature is that individual conveyance control is performed in units of molds, a branch is provided in a specific process, and a difference in required time between each process can be overcome.

In FIG. 4, the mold to which the gob is supplied is
The gob supply device 10 (orifice 9 which is a part of the gob supply mechanism), the press molding device 11, which is placed on the conveying means,
Passing through the shell mold processing device 5 from the cooling device 13, the shell mold processing device 5, the pin mounting devices 4, 4 ′, and the molded product take-out device 6 (which sends the press molded product to a slow cooling device (not shown)). Then, the position of the gob feeder 10 is reached again. The first conventional example is a cathode ray tube panel molding system in which the conveying means is circulated in the order as described above.

This CRT panel molding system is basically aimed at adapting to the production of a wide variety of products. The features are that the process can be easily switched according to the type of CRT glass molded product to be manufactured, the maintenance efficiency of each device described above is improved, and the space efficiency in the factory is improved, The transfer time and stop time of the transfer means can be arbitrarily adjusted in each process, the deterioration of the cycle time of the entire manufacturing equipment can be prevented, the stability of the kiln can be easily ensured, and the power efficiency of the entire factory is improved. There was something to be done.

Further, in terms of a direct processing technique for the product, it is easy to control the temperature of the mold during the process, and the positional accuracy between the press-molding plunger and the mold is improved. Pins can be attached at relatively high temperature to improve workability and accuracy and strength, annealing can be performed at relatively high temperature, and cracking defects have been reduced. Improved. In addition, the dimensional accuracy could be improved.

A second conventional example is shown in FIG. This is the technique disclosed in Japanese Patent Publication No. 44-12651. The feature is that the index turntable system is adopted, and it has been widely used as an apparatus for manufacturing a glass molded body for a cathode ray tube. The molds are arranged at equal intervals on a turntable driven by an index system (a system that moves intermittently), and machining progresses each time the table rotates.

For example, Japanese Patent Laid-Open No. 54-45322, Japanese Patent Publication No. 1-24231, and Japanese Patent Publication No. 1-44.
According to the technique disclosed in Japanese Patent No. 4648, etc., one or a plurality of gob feeders 10 continuously feed a plurality of gobs to a plurality of dies, and simultaneously press these plurality of gobs. There was also a device. However, these were also multiple production systems in the turntable system.

[0009]

The following problems have occurred in the manufacturing apparatus or manufacturing method of the glass molded body for the cathode ray tube.

With respect to glass moldings for cathode ray tubes (mainly panels or funnels), the supply and demand relationship has undergone great fluctuations in accordance with the market situation of diversification of the TV market. Traditionally, manufacturers of glass moldings for cathode ray tubes have responded to demand by producing a relatively small number of types in large quantities.
The number of varieties to be produced has increased, and special products such as flat-type CRTs have appeared. In addition, the demand for super-large products has increased.

On the contrary, looking at each product, the production amount of some products decreased. For this reason, there has been an increasing demand for frequent switching of manufacturing types, simultaneous production of various types and sizes of different types, and in-line production of certain types.

Further, due to the diversification of the market, demand fluctuations for each product type occur more frequently, and it is difficult for the manufacturer side to respond to this. In addition, it was difficult to cope with a temporary increase in demand for each variety due to seasonal fluctuations and other causes.

It has been difficult for the conventional index turntable type production system to meet such demand fluctuations. The present invention solves this problem and has already been proposed by the present applicant.
Further, the present invention provides a manufacturing apparatus and a manufacturing method capable of further improving the productivity of manufacturing glass molded bodies for cathode ray tubes and adapting to special production conditions.

[0014]

According to the present invention, there is provided a gob feeding step of feeding a carrying means, on which a die is placed by a feeding device, to a position of a gob feeding device and feeding a gob of molten glass onto the die. A press-molding step in which the conveying means, on which the mold supplied with the gob is placed, is moved to the position of the press-molding device to press-mold the gob; and a press-molded body on the mold in which the gob is pressed. In a method for manufacturing a glass molded body, which comprises a step of transferring a transporting means on which the die is placed to a position of a press molded article removing device and removing a press molded article, one or a plurality of glass moldings are provided on one transporting means. , The gob feeding device has two or more gob feeding mechanisms, and the plurality of gob feeding mechanisms feed the plurality of gobs onto the plurality of dies almost at the same time, and the transfer device feeds at least the gob. From process to pre Until the molding step, one or a plurality of conveying means are transferred so that the plurality of molds form one group, and in the press molding step, the gobs on the plurality of molds of the one group are press-molded almost at the same time. A method for producing a glass molded body, which is characterized by the above.

Further, a gob supply device for supplying a gob of molten glass to the mold, a mold to which the gob is supplied from the gob supply device, a conveying means for mounting the mold, and a mold on the mold. A press molding device for press molding a gob, and a press molded product take-out device for taking out a press molded product on the mold are provided, and further, a gob supply step provided with the gob supply device and the press molding device are provided. An apparatus for manufacturing a glass molded body having a transfer device arranged so as to sequentially circulate and convey the conveying means between each step of the press molding step and the press molded body removal step in which the press molded body removing device is provided. In the above, one or a plurality of molds are placed on one conveying means, and the transfer device has one or a plurality of molds so that the plurality of molds form one group in at least a part of each step. Transport the feeding means, gob feeder 2
The above-described gob supply mechanism is provided, and the gobs are supplied from the plurality of gob supply mechanisms to the plurality of molds of the one group substantially at the same time, and the transfer device press-molds the conveying means on which the one group of molds is placed. Transfer to the process, press molding equipment
Provided is an apparatus for manufacturing a glass molded body, which press-molds gobs on a plurality of molds of a group almost at the same time.

As a specific embodiment, in the above-mentioned method for manufacturing a glass molded body, a plurality of molds corresponding to glass molded bodies having different shapes are placed on different conveying means, and at least the press molding step is performed. A press molding device corresponding to two or more kinds of glass molded bodies is provided, and the transfer device is provided with a plurality of conveying means so that at least two kinds or more of molds form one group, at least from the gob supply step to the press molding step. In the gob feeding step, at least two or more gob feeding mechanisms of the gob feeding device feed the gobs associated with a plurality of molds of one group substantially at the same time, and the transfer device feeds the conveying means of the one group. ,
The press forming apparatus corresponding to the dies of the conveying means of one group is moved to the position of the press forming apparatus corresponding to the type of the dies placed on the respective conveying means, and There is also a method for manufacturing a glass molded body, which is characterized by press-molding a plurality of gobs almost at the same time.

Further, in the above-mentioned method for manufacturing a glass molded body, a plurality of molds corresponding to glass molded bodies having different shapes are placed on one conveying means, and in the press molding step,
A press molding device corresponding to at least two or more types of glass molded bodies is provided, and in the gob supply process, at least two or more gob supply mechanisms of the gob supply device are provided to a plurality of molds on one conveying means, and to each mold. A press molding apparatus that supplies corresponding gobs to each other at substantially the same time and that corresponds to a mold on one conveying means press-molds a plurality of gobs on a plurality of molds at one conveying means at substantially the same time. There is also a method for producing a molded glass body.

[0018]

A feature of the present invention is that a plurality of gob feeding mechanisms of a gob feeding device feed a plurality of gobs to a plurality of metal molds mounted on a group of conveying means almost at the same time. The transfer means is transferred to the press molding step by the transfer device, and the plurality of gobs are press molded by the plurality of press molding devices provided therein almost at the same time. In this case, by using different molds for the plurality of molds, it is possible to simultaneously manufacture different types of glass moldings.

The production efficiency and the production method of the glass molded body of the present invention are further improved. In particular, there is a great improvement in the simultaneous production of glass moldings for cathode ray tubes, especially heterogeneous varieties.

When a pin attaching step is further provided after the press forming step, a plurality of gobs can be press formed at the same time, and pin attachment can be performed by a plurality of pin attaching devices. Therefore, in particular, the production of various types of glass molded bodies can proceed with high efficiency, and the number of productions per hour is improved.

Further, according to the present invention, among the glass moldings, the productivity in the case of mass production in a large number of mixed products including a large-sized cathode ray tube panel or funnel, which is considerably heavy and has a large physical size, is improved. Can be improved. In particular, it is possible to harmonize the mounting time of the large and heavy shadow mask fixing pins by welding to the panel and the time required for pressing in the pressing process of the large panel.

In addition, the efficiency of pin attachment and the quality of the pin welded portion can be improved. Further, as compared with the conventional method, the degree of freedom of the entire apparatus for manufacturing a glass molded body is high, and the multi-product mixed production can be achieved on a small scale as compared with the conventional method.

[0023]

【Example】

(Example 1) FIG. 1 shows a glass molding provided by the present invention,
Specifically, it is the first embodiment of the apparatus and method for manufacturing a panel for a cathode ray tube. This figure is a block diagram showing the relationship among the respective devices (die, conveying means, press molding device, transfer device, etc.). Hereinafter, a description will be given with reference to FIG. The figure schematically shows the positional relationship between the devices.

First, the overall outline will be described. The apparatus for manufacturing a glass molded body for a panel shown in the figure includes a conveying means 1, bottom molds 2a, 2b, shell molds 3a, 3b, pin mounting devices 4a-4d, shell mold processing device 5, press molded body. The take-out device 6, the process control device 7, and the take-out path 8 of the carrying means 1 for taking out the carrying means 1 for repair or re-introducing into the transfer device 20 are provided.

The bottom mold 2a and the shell mold 3a, and the bottom mold 2b and the shell mold 3b are used in combination. Each set may be a molded glass for atypical panel. Even when producing the same type,
Due to heat retention from the gob supply to the press molding, the shape of part of the mold other than the press molding surface may be different. In press molding of other glass moldings such as a funnel, press molding may be performed using a bottom mold and a ring mold integrally provided on the plunger side of the press molding device. That is, there may be a case where the shell mold which is previously connected to the bottom mold is not used before the press molding.

Furthermore, three orifices 9a to 9c, which are a part of the gob feeding mechanism from which molten glass comes out, and one gob feeding device 1 having these three orifices 9a to 9c.
Press molding machine 11 with 0 and 2 plungers
a, 11b, a slow cooling device 12 for gradually cooling the press-molded body after taken out, a cooling device 13 for mainly cooling the bottom mold,
Further, a transfer device 20 for circulating and transferring the transfer means 1 from one process to one process in which each device is provided, and each device provided along another transfer device 20A (not shown) are provided. It is provided.

The transfer means 1 on which the two bottom molds 2a and 2b are placed is transferred by the transfer device 20.
0 is transferred via the positions 20a ′ to 20p which are the respective parts. Position 20f or 20g and 20k or 20m go through either one. In this way, the transport means 1
Are circulated from position 20a 'to 20a' again via each position in sequence.

In this embodiment, the transfer device 20 has one circulation path (positions 20a '→ 20b → 20c → 20d → 20e).
From 20e to 20f → 20h or 20g → 20h
20h to 20i via one of the branches
→ 20j → 20j → 20m → 20n
Or via one branch of 20j → 20k → 20n, and again via 20p and 20a, again 20a ′.
Up to) are provided. Then, there is a circulation path by the line of another transfer device 20A (one round from 20a to 20a). These two circulation paths are
There is a mixed flow between position 20k and position 20a.

The position 20a is a position for stopping and branching when the gob is supplied, which is provided for the line of another transfer device 20A whose details are not shown. Transfer device 20A
The basic configuration of the line is the same as the line of the transfer device 20, but the press molding device and the like provided therein are different in type from the press molding device provided in the line of the transfer device 20. Can be produced. The difference in configuration between the two lines will be described later.

Using the set of 9a and 9b of the three orifices 9a to 9c of one gob feeder 10, a molten glass gob, that is, a gob, is set to two molds mounted on one conveying means 1 ( Bottom mold 2a and shell mold 3a, and bottom mold 2b and shell mold 3b are respectively integrated). In the present invention, the gob supply mechanism means a mechanism in which an orifice, a gob plunger, and a gob cutting blade work together to generate one gob. A plurality of gob supply mechanisms can be provided in one gob supply device 10.

The two gobs supplied to the two molds are press-molded by the press-molding devices 11a and 11b almost at the same time, and then the bottom molds 2a and 2b are cooled by the cooling device 13 at the position 20c. 20d shell mold 3a,
3b is removed, and the pin attaching device 4a, 4b or 4c, 4 provided in the pin attaching step is further provided.
Pins are attached to the press-molded body by d.

Further, in the middle of the transfer device 20, the press-molded body or the bottom molds 2a, 2b are appropriately cooled or kept warm so as to reach a desired temperature while measuring the temperature. The bottom mold 2 is the press-molded body that becomes the panel for cathode ray tubes.
The mold is released from a and 2b, delivered from the circulating molding device 20, and conveyed to the slow cooling device 12 for strain removal. The shell molds 3a and 3b separated at the position 20d are
It is handled by the shell mold processing device 5, and then mounted again on the bottom molds 2a and 2b at the position 20p.

Next, details of each part will be described. The transfer means 1 is a pallet or a trolley on which two bottom molds 2a and 2b are placed. In the present embodiment, two bottom dies are placed on the single transfer means 1, but a larger number of bottom dies can be placed.

The bottom molds may be the same or different. Each die is provided with a guide mechanism for alignment with the plunger in the pressing process. Then, the transport device 20 transports the transport unit 1.

The transport means 1 is provided with a driven portion to be transferred by the transfer device 20, and an engagement device, a position sensor, an alignment mark, etc. for stopping and fixing the transfer device 20. ing. In addition, the transport means 1 also
It has its own controller. The transfer means 1 is mainly controlled by the process control device 7 and transferred along the transfer device 20.

The transfer device 20 has a guide rail which circulates and the transfer means 1 so that the transfer means 1 can be controlled and transferred.
Stopper, a device for locking the conveying means 1 at a predetermined position of the transfer device 20, a direction changer for branching the conveying means 1 at a branch point, a position detection sensor for the conveying means 1, a driving device for the conveying means 1, a press A fixing device or the like for firmly fixing the transporting means 1 when molding is provided.

As another transportation method of the transportation means 1, it is possible to provide a levitation mechanism for floating the transportation means 1 by air and driving it by a linear motor for transportation. For example, when the conveying means 1 composed of a pallet or the like having a substantially flat bottom surface comes into contact with the transfer device 20 at the bottom surface thereof, the ball valve provided on the upper surface of the transfer device 20 is pushed down to open the valve, so that the temperature is controlled. The controlled high-pressure air is ejected to levitate the conveying means 1. Such an air table structure is provided in the transfer device 20. Then, the conveying means 1 is provided with a secondary conductor of the linear motor, and the transfer device 20 side is provided with a primary conductor of the linear motor.

In the case of this air levitation method, the conveying means 1 can be driven by a linear motor in a substantially non-contact manner, the direction can be changed more easily, and the transfer can be performed accurately and at a relatively high speed.

Next, description will be made in the order in which the respective steps for molding glass are provided. The bottom die 2 is used for the conveying means 1.
a and 2b are placed, and at least shell molds 3a and 3b, which are fitted with the bottom molds 2a and 2b to be integrated molds, are connected to the bottom molds 2a and 2b. 2 mounted on one carrier
The pair of molds (bottom mold 2a and shell mold 3a, and bottom mold 2b and shell mold 3b) are three orifices 9a, 9b, 9c provided in one gob feeder 10.
A gob is supplied from each of the groups 9a and 9b.

In the present embodiment, the gob supply device 10 has three orifices, but in actuality, an example has been described in which the gob is simultaneously supplied from two orifices to two molds. Therefore, as will be described later, the orifice 9b and the orifice 9c may be used when manufacturing the odd-shaped product. It is also possible to use three molds and simultaneously feed gobs from three orifices.

Since a plurality of molds are placed on one conveying means 1, a molten glass block, that is, a gob, is moved from the two orifices 9a and 9b to each of the molds at almost the same time. Supplied. At this time, if the mold placed on the transfer means 1 is of a different shape, the orifice 9a and the orifice 9b of the gob supply device 10 are dedicated so as to supply a gob having a size corresponding to each mold. It is desirable to be

Alternatively, it is also possible to variably control the size and the like of the gob to be supplied according to the transfer means 1 of the supply destination for each of the orifices of the gob supply device 10 to supply the desired gob suitable for the mold. Is. For example, it is possible by controlling the operation stroke of the gob plunger and the operation of the gob cutting blade.

The transfer means 1 (which has a mold suitable for a press molding device or the like of any line is placed) which is transferred to either the transfer device 20 or the transfer device 20A approaches the gob supply device 10. To detect whether or not Transfer device 20
If the transfer means 1 is to be transferred to the transfer means 20, the transfer amount of the transfer means 1 is controlled on the transfer device 20, and the orifices 9a and 9b are controlled.
Is stopped at a position 20a 'in the vicinity immediately below.

Then, in order to align the die with the orifice 9 in the plane direction, the alignment marks provided on the conveying means 1, for example, the cross-shaped marks provided at the four corners of the conveying means 1 are optically provided. Then, the XY control in the plane of the transporting means 1 is performed. This is performed by a positioning device (not shown) for feeding a gob provided in the vicinity of the position 20a 'to slightly move the transporting means 1 in the horizontal plane for positioning.

This alignment work may be performed for each of the transfer means 1 or for each die. For example, after aligning one transport means 1, the gobs are fed from the two orifices 9a and 9b of the three orifices of the gob feeder 10 almost at the same time. In this embodiment, in order to manufacture a large-sized panel, the orifices 9a and 9b are fixedly provided on the die mounted on the conveying means 1.

Further, since two dies are placed on one carrying means, when the carrying means is used as a reference for alignment, the carrying means 1 is aligned for one gob supply. Then, as will be described later, two press-molded bodies can be manufactured by performing alignment for one press molding.

The transfer means 1 on which at least two or more molds are placed, each of which is supplied with a gob, has a transfer device 20.
Is transferred to the press molding devices 11a and 11b. The press molding devices 11a and 11b have a plurality of gobs,
It has at least two or more plungers so that press molding can be performed almost at the same time. In the figure, the illustration of the plunger is omitted. Since there are a plurality of molds to which the gob is supplied, the plunger is provided corresponding to the positions of these molds. Then, the two gobs are press-molded almost at the same time.

Therefore, the press molding devices 11a, 11
The plunger shaft of b corresponds to the positions of the press shafts of the two molds placed on the conveying means 1. When a large-sized panel is press-molded, a large gob is used, so that the plunger is large and heavy, and the dimensional accuracy becomes strict. Therefore, a driving device is required for each plunger. Press molding apparatuses 11a and 11b in this embodiment
May have at least two or more plungers and a plurality of plunger drive mechanisms, or may be a completely plurality of press molding apparatuses, which is preferable.

However, when a plurality of small press-molded bodies are simultaneously press-molded, it is possible to simultaneously drive two plungers connected by one plunger drive device.

Also in the press molding process, the alignment of the mold and the plunger is very important. Since a plurality of molds are mounted on one conveying means and a plurality of gobs are provided, the press molding apparatuses 11a and 11b are provided with a mechanism for aligning a plunger and a mold by a self-alignment method with respect to each mold. have.

When different types of dies are mixed, the press forming devices 11a and 11b corresponding to the respective dies are provided, and therefore, the positioning mechanism is provided independently for each dies. There is.

Using the alignment marks provided on the above-mentioned transport means 1, the primary alignment between the press molding devices 11a and 11b and the transport means 1 is optically performed. A guide mechanism that is mechanically fitted to the plunger and the mold is provided. Since the mold is fixed on the transfer device 20, the plunger should be aligned with the position of the mold.
The position can float in the horizontal plane. Or
It is also possible to make the carrier means 1 (mold) side float.

Alternatively, as described above, when the conveying means 1 is floated by air, the press molding device 11 is used.
The plunger mechanism of a and 11b is fixed, and the transport means 1
May move a small amount vertically and horizontally. This alignment is relative, and either the plunger side or the die side is the main body of the alignment.

In this way, one plunger can be pressed with respect to one mold. Then, the two gobs loaded in the mold are press-molded by the press-molding devices 11a and 11b. When the press molding is completed, the transport unit 1 is moved to the position 20 by the transfer device 20.
transferred to c. Here, the press-molded body and the bottom mold are mainly cooled. Also, the time for cooling can be adjusted. Also, wait at position 20c for the required time,
Further, the transport means 1 advances to the position 20d.

Here, the shell molds 3a and 3b are separated and removed from the integrated bottom molds 2a and 2b by the shell removing device 5a. The shell mold removing device 5a can simultaneously remove a plurality of shell molds. Also, atypical shell molds can be processed at the same time.

Then, the shell molds 3a and 3b are transferred by the shell mold transfer device 5b to reach the shell mold mounting device 5c. In order to synchronize with the shell mounting timing, the shell molds 3a and 3b engage with the shell mold transfer device 5b and the shell mold mounting device 5c, and wait as necessary. The shell mold handling device 5 can simultaneously handle a plurality of shell molds or odd-shaped shell molds.

The conveying means 1 from which the press-molded body of glass has been removed and only the bottom molds 2a and 2b have been placed is located at position 20g or 20f, and further at positions 20h, 20i, 2 and 2.
It goes through 0 m or each position of 20 k and 20 n and circulates once to reach the position 20 p of the transfer device 20 corresponding to the shell mold attaching device 5 c.

Here, the shell dies 3a and 3b are attached to the bottom dies 2a and 2b again. Shell mold 3a,
The attachment of 3b can be carried out simultaneously for two molds of one conveying means 1. When a different type of shell mold can be handled, an arbitrary shell mold is preferentially transferred in the shell mold processing device 5 for attaching and detaching the shell mold and transferring the shell mold on the transport means 1 at the position 20p. Bottom mold 2a
Alternatively, it can be attached to 2b.

By the way, after the shell molds 3a and 3b are removed, the conveying means 1 is provided with the respective parts 20d and 20d of the transfer device 20.
Pass through position 20e. At this time, the bottom molds 2a and 2b placed on the transfer means 1 can be cooled by a cooling device (not shown).

Further, in the case where the molds are of the same type, the transfer means 1 is basically a transfer device 2 which alternately branches one by one.
It is transferred to either the 0 position 20g or the 20f position. When the mold is of a different shape, it is branched to a position where a pin attaching device corresponding to each mold is provided. In this case as well, a plurality of respective pin attachment devices may be provided.

A pin attaching device is provided around these positions 20g or 20f. Press molded,
The shell molds 3a, 3b are removed, and the bottom molds 2a,
The press-molded body of glass to be a cathode ray tube panel in 2b is attached by welding the pins for fixing the shadow mask by the pin attaching devices 4a to 4d. Since the welding of the pins takes a relatively long time, four pin mounting devices are provided corresponding to the four press-molded bodies.

The pins can be simultaneously attached to the two press-molded bodies on the two dies placed on the one conveying means 1. After the pin attaching process is completed, the transport means 1 advances to the position 20h.

Also here, the bottom molds 2a and 2b can be cooled by a cooling device (not shown). Further, the transport means 1 advances to the position 20i.

The press-molded body removing device 6 is a slow-cooling device for removing strain by releasing a press-molded panel-shaped press molded body made of glass with pins attached thereto from the molds 2a and 2b. Put in 12. The press-molded body, which becomes the panel for the cathode ray tube after the gradual cooling, is then polished and inspected to become a product. This post-treatment step also
It is provided so as to be able to process an atypical press-molded body made of an atypical mold placed on one conveying means 1.

Reference numeral 8 is a withdrawal path for individually taking out the transporting means 1 from the circulation path of the transfer device 20 for repair or replacement. If a press molding machine is provided for the production of a plurality of types of products and accordingly a plurality of types are provided, 1
In the middle of the production of only the product type, the transfer means 1 on which different molds are placed is introduced into the transfer device 20, and at the same time, the gob supply device 10, the press molding devices 11a and 11b, and the press molding devices provided other than this. It is possible to switch to production of a plurality of types by controlling.

The conveying means 1 can be moved on the transfer device 20 substantially linearly. It can be stopped at each of the positions described above. However, there is a position where the transport means 1 passes through without stopping depending on whether the transporting means 1 is locked at a position corresponding to each device in each process and a working operation is performed or not.
Note that a part of the transfer device 20 may meander in a curved shape.

The overall operation method will be described. On the basis of the number taken out from the press-molding take-out device 6 per unit time, the total number of the conveying means 1 transferred by the transfer device 20 is coordinated and integrally linked and transferred. In this, the process control device 7 checks the conditions of the whole and each part, and controls the transfer device 20 and other devices as a whole.

In this case, the process control device 7 detects the position of each transfer means 1 in the transfer device 20 and also monitors the state of each transfer means 1. For example, if the process is not normally completed in a certain process, the conveyance means 1 in which the abnormality has occurred is not processed and can be discharged from the position 20k. Further, when a large abnormality occurs, the entire transfer device 20 can be temporarily stopped.

Further, even if the number of the transportation means 1 is reduced, the entire operation can be performed as it is. In addition, new transport means 1
Is introduced into the transfer device 20, the time adjustment of the operation control can be automatically performed according to the total number in that case. In this apparatus for manufacturing a glass press-molded body for a cathode ray tube, a standby point at which the transporting means 1 is made to stand by is provided at several positions of the transfer device 20, which are not shown, so that the entire time adjustment is made. Be done. It is possible to adjust the time by waiting at each of the above-mentioned positions.

Next, the features of this embodiment will be described. Normal,
The attachment by welding of the pins is performed by embedding a sufficiently heated pin in the thickness direction of the press-molded body, but it takes time as compared with other steps because the dimensional accuracy is severe. Therefore, from the position 20e, the transfer device is branched into two, and the positions 20f, 2
Four pin attachment devices 4a to 4d are provided at 0g. For heating the pin, there are an induction heating method and a gas burner method.

If the cycle time of the molding apparatus is limited by the press time rather than the attachment time by pin welding in the molding of a large type, the pin attachment apparatus includes two units of one branch, for example, 4a and 4b. Other branches 4c and 4d
It is desirable to alternately use. The sets 4a and 4b and the sets 4c and 4d are pin-attached at the same time for a certain period of time so that the transport means 1 of the previously finished set is transferred to the next step.

Further, depending on the type of the panel press-molded product, the time required for other steps may be sufficiently shorter than the attachment time by pin welding. In this case, the number of pin attachment devices should be 6 or more, The transfer device before and after the attachment device may be branched into three or more. As described above, it is possible to freely make a plurality of pin attaching steps, which are rate-determining steps.

When a plurality of products are used, not only can they be carried out at the same time, but the products whose processing operations have been completed can also be sent to the next step in sequence so that they can be operated alternately. In this case, almost the product can be manufactured at the press molding speed.

The features of this embodiment will be further described. The transfer device is duplicated in the basic configuration described above. Transfer device 20 and transfer device 20 for one gob supply device 10
Two lines of A are provided. Each line is provided with a plurality of pressing devices.

In the mold of the transfer means 1 of the line of the transfer device 20, from the orifices 9a and 9b of the gob supply device 10,
A gob is supplied from the orifices 9b and 9c to the mold of the transfer means 1 of the line of the transfer device 20A. The gob supply mechanism corresponding to each of the orifices may be a specialized type adapted to the mold or a type capable of varying the size of the gob.

In this way, it is possible to further shorten the cycle time of the press-molding work, reduce the number of times of product type change and improve efficiency, and more easily cope with mixed product production of multiple products. For example, the size of the gob can be changed by specializing the gob supply mechanism or controlling the operation. In the case of the first embodiment in which only the orifice 9c is atypical and two gobs are supplied at the same time, 25% of the total number of gobs supplied is 50% when the orifice 9b is atypical and press molding is performed in both lines. % Can be atypical.

Since a plurality of products having different shapes can be produced at the same time, a great improvement is made in terms of the kiln.
It is also possible to gradually switch production almost non-stop according to demand. Therefore, the inventory can be reduced, the stagnation from production to shipping can be reduced, and the production cost can be improved. In addition, the ratio of production of atypical products
This is advantageous because it can be selected to some extent.

The above-described embodiment is an apparatus for manufacturing a glass molded body for a cathode ray tube panel, but a glass molded body manufacturing apparatus for a cathode ray tube funnel can be basically provided with the same configuration. The pin attaching step in the glass molding manufacturing apparatus for the panel is not necessary in the case of manufacturing the funnel.

Further, in the press molding of the funnel, a ring mold or the like which operates integrally with the plunger of the press may be used without using the shell mold. Since the press molding of the funnel is overwhelmingly faster than the press molding of the panel, the present invention has a great effect in matching the gob supply and the press molding. Except for the difference from the case of manufacturing the panel, the devices in other steps may be basically the same, and the manufacturing method is also the same.

(Embodiment 2) FIG. 2 shows a second embodiment of the present invention. It is a block diagram showing an example of a manufacturing device and a manufacturing method of a glass molding of a panel for cathode ray tubes. A description will be given with reference to FIG.

First, the overall outline will be described. The difference from the first embodiment is that only one die 2a is placed on each of the transfer means 1. It is possible to place the same mold or a different mold corresponding to a different glass molded body on at least two or more conveying means 1.

The transport means 1 are individually transferred. However, the gob feeding and the press molding are performed at almost the same time for each of the two conveying means forming one group. Further, there are three branches for attaching pins.
Further, three press-molded body take-out devices 6 for taking out the press-molded products are provided in the same number as the above-mentioned number of branches.

The transfer means 1 on which the bottom mold 2a is placed is
The transfer device 30 transfers the transfer device 30 to each position. The positions 30i, 30j, and 30k pass through any one of the positions. In this way, the transport means 1
From position 30a to again 30a, it is circulated through each position in sequence.

In this embodiment, the transfer device 30 has one circulation path (positions 30a → 30b → 30c → 30d → 30e →
From 30g and 30g, 30g → 30j → 30p → 30n
Or 30g → 30h → 30k → 30n or 30g → 30
f → 30i → 30m → 30p → 30n via any one of three branches, from 30n to 30n → 3
Via 0q → 30r → 30s → 30u, and again 3
0a).

From the respective orifices 9a and 9b of the gob feeders 10a and 10b, two molds (bottom mold 2a and shell mold), one of which is mounted on each of the two conveying means as a molten glass gob, that is, a gob, are provided. 3a, the bottom mold 2b and the shell mold 3b are integrally formed on the conveying means 1) at substantially the same time, and then the two gobs are press-molded at substantially the same time by the press molding devices 11a and 11b. Mainly for press molding and bottom molds 2a, 2b
Is cooled by the cooling device 13, and the shell mold 3 is moved to the position 30e.
Removal of a and 3b is performed, and pin welding is further performed by the pin attachment devices 4a to 4c.

Then, the conveying means 1 is transferred to the press-molded body removing step, where the press-molded body is moved to the bottom mold 2.
It is released from a, sent from the circulating molding device 30, and conveyed to the slow cooling device 12 for removing strain.

The detached shell mold 3a or 3b
Are handled by the shell mold processing device 5 and then mounted again on the bottom mold 2a or 2b.

Next, the details of each part will be described. The transfer means 1 is a pallet or a trolley on which one bottom mold 2a or 2b is placed. The transfer device 1 transfers the transfer unit 1.

The transfer device 30 is provided with various devices so that the transfer means 1 can be controlled and transferred. This is the same as in the first embodiment. Each of these devices is controlled by the process control device 7.

The steps for forming glass will be described in the order in which they are provided. Either one of the bottom molds 2a or 2b is placed on the conveying means 1, and the bottom mold 2 is further mounted.
At least shell molds 3a and 3b, which are fitted to the molds a and 2b to be integrated molds, are connected or separated. One set of molds (bottom mold and shell mold) placed on one conveying means 1 is composed of two gob feeders 10a, 1
The gob is supplied from any of the orifices 9a and 9b of 0b.

For two dies forming a group of two transfer means 1 on which one die is placed, for example, a bottom die 2a and a bottom die 2b, a molten glass block, That is, the gob feeder 10 has two gobs.
It is supplied almost simultaneously from the orifices 9a and 9b of a and 10b, respectively. In this case, the irregular mold is the conveying means
If it is placed on the
The size and the like of the gob supplied from each gob supply device (orifice thereof) is adapted. The press molding device 11a and the gob supply device 10a (orifice 9a) correspond to each other, and the press molding device 11b and the gob supply device 10b (orifice 9b) correspond to each other.

Positioning in the case of gob supply will be described. The transfer amount of the transfer means 1 on the transfer device 30 is controlled, and the transfer device 1 is stopped near the positions directly under the orifices 9a and 9b, that is, at the positions 30a and 30u. Then, in order to align the mold and one of the orifices 9 (9a, 9b) in the plane direction, an alignment mark provided on the conveying means 1 is optically detected, and within the plane of the conveying means 1. XY control is performed. This is performed by finely moving the transporting means 1 in the horizontal plane by means of a positioning device (not shown) provided near the positions 30a and 30u for positioning. If necessary, make vertical adjustments.

Two molds forming one group (one mold is placed on each of the two conveying means) are fed to positions 30a and 30u, respectively. Then, after advancing the respective alignments almost at the same time, the gob feeding device 10a (orifice 9a) and the gob feeding device 10b.
The gobs are supplied to the respective molds from the (orifice 9b). In this example, to produce a large panel,
The orifices 9a and 9b are positioned and fixedly provided on the mold mounted on the conveying means.

The alignment is performed for each one transporting means 1. An offset is usually provided between the central axis of the orifice and the core of the mold in order to cut the gob and lay it on the press molding surface of the mold.

The two transfer means 1 forming one group on which the molds to which the gobs are supplied are placed are transferred by the transfer device 30 to the press molding devices 11a and 11b. The press molding apparatuses 11a and 11b have at least two plungers so that a plurality of gobs can be press molded almost at the same time. The plunger is not shown in the figure. Since the plunger simultaneously press-molds a plurality of molds to which the gob has been supplied, the plungers are provided corresponding to the positions of the two conveying means 1 on which these molds are placed. Then, the two gobs are press-molded almost at the same time.

Therefore, the press molding devices 11a, 11
The plunger shaft of b corresponds to the positions of the press shafts of the two molds placed on the two conveying means 1. When a large-sized panel is press-molded, a large gob is used, so that the plunger is large and heavy, and the dimensional accuracy becomes strict. Therefore, a driving device is required for each plunger. Press molding apparatus 11a, 1 in this embodiment
It is desirable that 1b has at least two plungers and has a plurality of plunger drive mechanisms, or is a completely plural press molding apparatus.

The alignment between the mold and the plunger is the same as in the first embodiment described above. In this embodiment, 1
Since the die of the table is placed on the single conveying means 1,
It is more advantageous that each transport means 1 can be handled individually. It becomes possible to slightly move each of the conveying means 1 in accordance with the movement of each plunger. Next, the pin attaching step in which the pin welding device is provided will be described.

In the case where the same die is placed, the conveying means 1 for which press molding has been completed basically has one of alternating branching positions 30i, 30j, 30k. Transferred to either. When a mold of a different shape is placed on the transfer means 1, it is transferred to a branch provided with a pin welding device corresponding to the mold. In addition, when a plurality of further devices are provided, they are sequentially transferred to the branch of the vacant device so as to improve the operation efficiency.

A pin welding device is provided around the positions 30i, 30j, 30k. Since the welding of the pins takes a relatively long time, three pin welding devices are provided corresponding to the three press-molded bodies. With these three pin attachment devices, the pins can be attached by welding at the same time. After the pin attaching process is completed, the transport means 1 advances to any of the positions 30m, 30p, and 30n.

Here again, the bottom mold 2a is cooled by a cooling device (not shown). Further, the transport means 1 advances to the position 30q.

The press-molded body removing device 6 is provided in three units, and the panel-shaped molded body having the pins attached thereto is used as the mold 2a.
Then, it is removed from the mold and removed, and put into the slow cooling device 12 for removing strain. The panel-shaped press-molded body made of glass that has been gradually cooled is then subjected to polishing, inspection and the like to become a product.

The transporting means 1 can be transported on the transporting device 30 substantially linearly. It can be stopped at each of the positions described above. However, depending on whether or not the transporting means 1 is installed in each device in each step and the circumstances before and after the transporting means 1, there is a position at which the device can pass without stopping.

The overall operation method will be described. The total number of the transporting means 1 transferred by the transfer device 30 based on the number of units taken out from the press-molded body take-out device 6 per unit time, that is, the production quantity per unit time, is coordinated and integrally linked. Be transferred. This is controlled by the process control device 7 by confirming the situation of the whole and each part.

In this case, the process control device 7 detects the position of each transfer means in the transfer device 30 and also monitors the state of each transfer means. For example, if the process does not end normally, temporarily stop the transfer device 30, or
The conveying means in which the abnormality has occurred can be discharged from the position 30q. This is the same as in the first embodiment.

Further, even if the number of transportation means 1 is reduced, the entire operation can be performed as it is. On the contrary, the new transportation means 1
Is introduced into the transfer device 30, the time-based operation control is automatically adjusted in accordance with the total number of vehicles in that case. In this apparatus for manufacturing a glass molded body for a cathode ray tube, the transporting means 1 is put on standby at several standby points (not shown) of the transfer device 30 so that the entire time adjustment is made.

Next, the features of this embodiment will be described. Generally, attachment of the pins by welding takes more time than other processes, so the transfer device is branched into three from the position 30g,
Three pin attachment devices 4a to 4c are provided at the positions 30i, 30j, and 30k. When the cycle time of the molding system is relatively limited by the press time rather than the attachment time by pin welding in the molding of a large type, two of these pin attachment devices may be used. Also in this case, the production efficiency can be improved by using the three pin attachment devices 4a to 4c in order.

Further, depending on the type of the panel molded body, the time required for other steps may be sufficiently shorter than the mounting time by welding the pins. In this case, the number of branches is further increased and four pin mounting devices are used. The above may be applied. In the production of medium-sized panels, it is desirable to provide about 6 pin attachment devices per press, and in the production of large-sized panels, two pin attachment devices per press.

Also in this embodiment, the transfer device 3 described above is used.
0 can be doubled. Further, since the two gob feeders 10a and 10b are provided, the molten glass having different properties (composition, etc.) can be provided and the gobs having different properties can be supplied.

It is also possible to provide a combination of one line consisting of the transfer device 20 of the first embodiment and one line consisting of the transfer device 30 of the second embodiment.

FIG. 5 shows one state in the gob feeding process in the first embodiment of the present invention. Bottom molds 2a and 2b are placed on the carrier 1. Also, shell mold 3a,
3b are respectively fitted and connected to the bottom mold. Here, a mold of the same type is placed on the conveying means 1.

Of the three orifices 9a to 9c of one gob supply device 10, one mold set (bottom mold 2a and shell mold 3a) from the orifice 9a to the other mold from the orifice 9b. Gob 50 is supplied to the set (bottom mold 2b and shell mold 3b). The gobs 50a and 50b supplied to the respective molds have substantially the same size, shape and temperature.

The orifices 9a to 9c have gob plungers 101a to 101c and gob cutting blades 102a to 102c.
02c is provided correspondingly. Basically, the orifice, the gob plunger, and the gob cutting blade cooperate to form a gob supply mechanism. And 3
Each gob feeding mechanism of the set is independently operable.

In the figure, the orifice 9a and the orifice 9
The gob 50a and the gob 50b are respectively supplied from b.

Unlike the illustrated conveying means 1, the gob is supplied from the orifices 9b and 9c to the conveying means 1 on which two molds of different shapes are placed. In this case, atypical gob supply is used.

Temperature measurement, heating, and heat retention are performed so that the temperature of the molten glass inside the gob feeder 10 becomes a desired temperature.

It is desirable that a constant amount of gob is supplied from the gob supply device 10. However, even if the production amount fluctuates, the temperature is controlled appropriately for the molten glass in the forehouse to supply it to the mold. Set the temperature of the gob to be within the desired range,
Enables the production of a certain press-molded body.

The operation in this gob supply step will be described. 1
When the gob is supplied to one of the transportation means 1, it is transferred to the press molding process. Different dies are placed on the next conveying means 1 and positioned immediately below the orifices 9b and 9c. And different gobs are supplied to each mold.

In this way, atypical products can be produced.

In FIGS. 1 and 2, the transfer devices 20, 20 are shown.
A and 30 are arranged at right angles, T-shapes, cross shapes, etc., but it is desirable to make them as straight as possible from the gob supply step to the press molding step. Then, speed control in only one direction is enough,
Positioning etc. becomes easy. Also. The stopping operation becomes easy.

[0120]

According to the present invention, a plurality of gob feeding devices or a single gob feeding device are provided with a plurality of gob feeding mechanisms, and correspondingly, a conveying means having a plurality of metal molds mounted thereon is provided. At the same time, they are transferred by the transfer device. For this reason, it has become possible to realize production of a wide variety of products, including heterogeneous products.

The pallet or the like, which is the transfer means 1 for transferring molds, is independently driven or stopped at each position of the transfer devices 20 and 30. Therefore, press molding,
The transfer device can be branched in a process that requires a long time, such as pin attachment. Alternatively, by setting the stop time longer, the transfer time and the stop time can be set as needed, and the degree of freedom of operation in multi-product mixed production increases.

For example, in the pin attaching step, if the transfer route is devised so that the pallet stop time can be taken only for the time required for attaching the pins by welding, the cycle time of the production will not be reduced and The work efficiency of the welding attachment of the pin to the press-molded article, especially the welding attachment of the large-sized pin, which takes time, is improved.

In this case, since the pins are attached by welding when the temperature of the molded body is relatively high, the time required for welding is shortened and the quality and yield of welding are improved. Furthermore, since the temperature at which the molded body is charged into the annealing furnace is higher than in the conventional case, the occurrence rate of cracks in the annealing furnace is reduced and the overall yield is improved.

As described above, when different-sized molds are used to supply gobs of different sizes and different products are produced simultaneously, the pin attaching step is also urgent if incorporated into the molding step. It is possible to meet the increasing demand and the equipment is simple and compact, and the production cost is reduced.

Since each pallet is independent, as shown in FIG. 1, it is possible to provide a sufficient space for temperature measurement, heating, and cooling according to each mold, so that the mold and the molded body can be provided. The temperature can be controlled more easily and accurately than in the conventional manufacturing apparatus or manufacturing method. The positioning of the mold in the gob supply device 10 can also be performed according to the transport means 1 on which the mold is mounted.

Further, the transfer means 1 can easily change its traveling direction. Since the mold can be exchanged together with the conveying means 1,
It has advantages such as automation of product type switching and easy reduction.

[0127] Further, since one kind of a plurality of kinds is produced and the conveying means 1 corresponding to another one kind is replaced from the line, the kind change can be performed without stopping the production. Increased flexibility in production planning of varieties.

In the case of a manufacturing apparatus having a plurality of routes, if each line is installed so as to be independently operable, it is possible to further increase the production capacities of a plurality of types.

Since one product line can be operated while the other line is operating, the degree of freedom in multi-product planning can be increased, and the product product switching can be further reduced.

Even when the same type of molded product is produced on both lines, the cycle time of the molding system is not limited by the press time by using a plurality of press molding devices in addition to the individual transfer of each pallet. Since the time is shortened to the upper limit of the supply capacity of the supply device, the productivity is dramatically improved.

Although the description has been made according to each embodiment, the techniques of each embodiment may be combined.

The present invention is a technique applicable not only to glass molding for cathode ray tubes but also to glass molding having different shapes and sizes in general glass molding.

[Brief description of drawings]

FIG. 1 is a block diagram of a first embodiment.

FIG. 2 is a block diagram of a second embodiment.

FIG. 3 is a block diagram of a second conventional example.

FIG. 4 is a block diagram of a first conventional example.

FIG. 5 is a block diagram showing a state in a gob supply process of the second embodiment.

[Explanation of symbols]

 1: Conveying means 2: Molds 2a, 2b: Bottom molds 3a, 3b: Shell molds 4, 4 ', 4a-4c: Pin attachment device 5: Shell mold processing device 6: Molded body take-out device 9, 9a , 9b, 9c: Orifice 10: Gob supply device 11, 11a, 11b: Press molding device 12: Slow cooling device 13: Cooling device 20, 30: Transfer device

Claims (5)

[Claims] 1. A gob feeding step of feeding a gob of molten glass onto a die by moving a carrying means on which a die is placed by a transfer device to a position of a gob feeding device, and a die to which the gob is fed. A press molding process in which the transfer means on which the mold is placed is moved to the position of the press molding device to press-mold the gob, a press-molded body on the mold in which the gob is pressed, and a transfer in which the mold is mounted. In a method for manufacturing a glass molded body, which comprises a step of transferring the means to a position of a press molded body removing device and taking out the press molded body, a glass molded body manufacturing method, placing one or a plurality of molds on one conveying means, The gob feeding device has two or more gob feeding mechanisms, and the plurality of gob feeding mechanisms feed a plurality of gobs onto a plurality of dies at substantially the same time, and the transfer device at least between the gob feeding step and the press molding step. Is multiple One or a plurality of conveying means are transferred so that the molds form one group, and in the press molding step, the gobs on the plurality of molds of the one group are press molded almost at the same time. Production method. 2. The method for producing a glass molded body according to claim 1, wherein the glass molded body is a panel molded body for a cathode ray tube. 3. A pin mounting step is provided between the press molding step and the press molded body take-out step, a plurality of pin mounting apparatuses are arranged, and the conveying means transferred from the press molding step is a plurality of pin mounting apparatuses. The method for producing a glass molded body according to claim 2, wherein the glass molded body is branched and transferred to and the pins are attached. 4. A gob supply device for supplying a gob of molten glass to a mold, a mold to which the gob is supplied from the gob supply device, a transfer means for mounting the mold, and a mold on the mold. It has a press molding device for press molding the gob and a press molding product take-out device for taking out the press molding product on the mold.
Further, the conveyance means is provided between each step of the gob supply step in which the gob supply apparatus is provided, the press molding step in which the press molding apparatus is provided, and the press molded article take-out step in which the press molded article take-out device is provided. In a glass molded body manufacturing apparatus having a transfer device arranged so as to circulate and transfer in sequence, one or a plurality of molds are placed on one transfer means, and the transfer device has a plurality of transfer devices in at least a part of the process. One or a plurality of transfer means are transferred so that the molds of one group become one group, and the gob supply device has two or more gob supply mechanisms. From the plurality of gob supply mechanisms to the plurality of molds of the one group. The gobs are supplied almost at the same time, the transfer device transfers the conveying means on which the molds of the one group are placed to the press molding step, and the press molding device removes the gobs on the plurality of molds of the one group. Apparatus for manufacturing a glass molded body, characterized in that crucible to press molding at the same time. 5. The apparatus for manufacturing a glass molded body according to claim 4, wherein at least two or more types of dies are placed on one or a plurality of transfer means, and at least two or more gob supply mechanisms of the gob supply device are provided. A plurality of gobs corresponding to the molds on the conveying means are supplied at substantially the same time, and at least 2
An apparatus for manufacturing a glass molded body, characterized in that, among the press molding apparatuses provided in more than one kind, the plurality of gobs are simultaneously press-molded by a press molding apparatus corresponding to the mold.