KR20020063722A - Temperature control system of plunger for glass forming apparatus - Google Patents

Abstract

PURPOSE: A plunger temperature managing system for a glass product molding equipment is provided to optimally design the plunger by managing temperature of every location point of the plunger depending on thickness, size and kind of the plunger. CONSTITUTION: A plunger temperature managing system for a glass product molding equipment comprises a pre-heating furnace(10) having a heating element, a plunger(17) having a cooling water distributing element, a lifting driver, many temperature sensors(38), and a data recording unit(40). The lifting driver alternatively changes the location of the plunger(17) between a heating location and a cooling location. The temperature sensors(38) measures temperature at every location point of the plunger(17) after selectively altering the plunger(17) depending on the thickness, size and kind of the plunger(17). The measured data are recorded by the data recording unit(40) and used to reduce design error.

Description

TEMPERATURE CONTROL SYSTEM OF PLUNGER FOR GLASS FORMING APPARATUS

The present invention relates to a temperature management system of a plunger for a glass article molding apparatus.

Generally, a cathode ray tube has a panel provided in front and projecting an image, a funnel-shaped funnel (hereinafter collectively referred to as a "glass article") coupled to the rear of the panel, and a neck bonded to the government of the funnel.

In the glass product, molten glass (approximately 1000 ° C.) formed in the glass melting furnace is introduced into the lower mold for forming the outer surface of the glass product by a predetermined amount (referred to as “Gob”), and then the inner surface of the glass product is molded. After pressurizing it with a plunger, and undergoing a predetermined cooling process, molding is completed between the space between the lower mold and the plunger.

As described above, the plunger pressurizing the gob frequently undergoes a mold exchange due to thermal deformation. In the case of exchanging the plunger, a predetermined preheating process is performed in advance in order to compensate for the temperature difference with the gob and to prevent the quality of the glass product being formed from being degraded. At this time, preheating of the plunger is performed by softening by the gob.

On the other hand, the size and type of the plunger is also replaced according to the size and type of the glass product to be molded. At this time, it is natural that the plunger has a different thickness for each part according to its type and size, and the temperature change for each part is also different. Therefore, if such data, that is, the temperature value for each location point of each plunger according to the thickness, size and type of the plunger is managed correctly, the manufacturing and replacement of the plunger can be made very easy.

However, in the related art, since the temperature control for each point according to the thickness, size and type of the plunger is not performed at all, it is difficult to match the thickness for each part during the manufacture of the plunger. In other words, the optimum design of the plunger can not be achieved, causing process loss, which causes a lot of trial and error.

Accordingly, an object of the present invention, the temperature of the plunger for the glass product molding apparatus for molding a glass product to manage the temperature of the plunger according to the location point of the plunger according to the thickness, size and type of the plunger to implement the optimum design for the plunger It is to provide a management system.

1 is a side view of a temperature management device of the plunger for glass forming apparatus according to the present invention,

2 is a control block diagram of a temperature management system of a plunger according to the present invention.

* Explanation of symbols for the main parts of the drawings

10: preheating 12: heater

14: preheating housing 32: actuator

38: temperature measuring sensor 40: data recording part

17: plunger

The object of the present invention is to provide a temperature control system of a plunger for a glass product molding apparatus for forming a glass product by pressing the glass gob is arranged so as to move up and down with a glass gob filling interval between the lower mold and the lower mold. An up-opening preheating furnace having a heating member; A plunger disposed at an upper portion of the preheating furnace and insertable into the preheating furnace, the plunger having a coolant distribution member for flowing coolant therein; A lift drive unit coupled to the plunger and alternately repeating a heating position in which the plunger is inserted into the preheating furnace to rise to a predetermined temperature and a cooling position taken out of the preheating furnace and cooled; A plurality of temperature measuring sensors for selectively changing the plunger according to the thickness, size and type of the plunger, and measuring the temperature of each plunger according to the heating position and the cooling position for each of the replaced plungers; And a data recorder for recording a temperature value detected by the plurality of temperature measuring sensors.

Here, the heating member is preferably a heater disposed in a zigzag shape along the inner wall circumferential direction of the preheating furnace.

The cooling water distribution member is advantageously provided with a cooling water supply passage for supplying the cooling water into the plunger, and a cooling water return passage through which the cooling water cooling the plunger is discharged from the plunger.

On the other hand, the support frame; It is provided on the top of the plunger may include a slider capable of lifting and lowering integrally with the plunger. The elevating driving unit is advantageously an actuator including a cylinder body coupled to the support frame, a cylinder rod extendable and contractable from the cylinder body, and an end of which is coupled to the plunger.

It may further include a pair of guide guides disposed in both regions of the actuator for guiding the lifting movement of the slider and the plunger.

On the other hand, further comprising a preheating furnace housing for wrapping the preheating furnace, it may be configured to include a plurality of rolling members installed on the lower end of the preheating furnace housing to move the preheating furnace housing.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 shows a temperature management system of a plunger for a glass molding apparatus according to the present invention as a device. As shown in this figure, the temperature control device of the plunger is disposed in the upper preheating furnace 10 having the heating element and the upper part of the preheating furnace 10 and insertable into the preheating furnace 10 and therein. Plunger 17 having a cooling water distribution member 23 for the flow of the cooling water, and the heating position is coupled to the plunger 17 and the plunger 17 is inserted into the preheating furnace 10 to rise to a predetermined temperature, and preheating The elevating drive unit alternately repeating the cooling position taken out from the furnace 10 and cooled, and optionally after replacing the plunger 17 according to the thickness, size and type of the plunger 17, the replaced plunger 17 A plurality of temperature measuring sensors 38 for measuring the temperature for each position point of each plunger 17 according to the heating position and the cooling position each time, and a data recording unit for recording the temperature values detected by the plurality of temperature measuring sensors 38. And 40.

In the present embodiment, the heating member disposed in the preheating furnace 10 is a heater 12 arranged in a zigzag shape along the inner wall circumferential direction of the preheating furnace 10. Here, of course, the heating member may be replaced by a burner or the like. In addition, a preheat furnace housing 14 is provided outside the preheating furnace 10 to surround the preheating furnace 10. In addition, a plurality of rolling members 15 for moving the preheating furnace housing 14 are installed at the lower end of the preheating furnace housing 14.

The support frame 30 is provided in the adjoining region of the plunger 17, and the slider 31 which is capable of raising and lowering integrally with the plunger 17 is provided at the upper end of the plunger 17. The plunger 17 is shaped like the plunger 17 which is actually put into a molding apparatus, as shown in FIG.

That is, the plunger head 18 which is combined with the plunger 17 and raises and lowers integrally with the plunger 17 is provided in the upper part of the plunger 17. The plunger head 18 has a cooling water supply passage 19 for supplying cooling water into the plunger 17 to cool the plunger 17 heated in the process of pressurizing a high temperature gob, and cooling water for cooling the plunger 17. The cooling water return passage 21 is formed again.

The plunger 17 is provided with a cooling water distribution member 23 for temporarily storing the cooling water supplied through the cooling water supply passage 19 of the plunger head 18 and spraying it toward the inner wall surface of the plunger 17. The cooling water distribution member 23 is fixed to the lower end of the plunger head 18 at a predetermined distance from the inner wall surface of the plunger 17, and the cooling water in the corner region of the plunger 17 corresponding to the corner region of the panel. Predetermined holes 24 are formed to be concentrated in the corner region of the panel.

The elevating drive unit includes an actuator including a cylinder body 33 coupled to the support frame 30, and a cylinder rod 34 extendable and contractable from the cylinder body 33 and having an end coupled to the plunger head 18. It is advantageous that it is (32). A pair of guide guides 36 which guide the lifting and lowering movement of the slider 31 and the plunger 17 are provided in both regions of the actuator 32.

By this configuration, the process of operating the temperature management system of the plunger 17 for the glass molding apparatus according to the present invention will be described.

First, when a predetermined working fluid is supplied into the cylinder body 33, the cylinder rod 34 is extended from the cylinder body 33 in length. In conjunction with this, the slider 31 is lowered by the pair of guide guides 36 and the plunger 17 is disposed in the preheating furnace 10.

When the plunger 17 is disposed in the preheating furnace 10, the heating member provided on the inner wall surface of the preheating furnace 10 is activated to start heating the plunger 17 to a predetermined temperature. The position of the plunger 17 at this time is called a heating position, and in the heating position, the plunger 17 is heated to a temperature which is raised in the actual molding facility. At this time, the plurality of temperature measuring sensors 38 measures the temperature for each position point of each plunger 17 and transmits it to the data recording unit 40.

When the temperature measurement for each location point according to the heating of the plunger 17 is completed, the cylinder rod 34 again raises the slider 31 while reducing the length from the cylinder body 33. In connection with this, the plunger 17 is also taken out from the preheating furnace 10, and after taking out, the cooling process is performed. That is, the cooling water is supplied through the cooling water supply passage 19 of the plunger head 18 to cool the inner wall surface of the plunger 17 via the cooling water distribution member 23, and then again through the cooling water return passage 21. The process of discharge to the outside is circulated.

At this time, the position of the plunger 17 is referred to as a cooling position, and at the cooling position, the plurality of temperature measuring sensors 38 measure the temperature for each position point of each plunger 17 and then transmit it to the data recording unit 40. do.

As such, the plunger 17 can be arranged in the heating position and the cooling position by the lifting and lowering drive. During the one cycle of the heating position and the cooling position, the plurality of temperature measuring sensors 38 and 38 are connected to the heating position. In addition to the time point arranged at the cooling position, the temperature at each heating point and at each moment of movement to the cooling position is measured, and the measured data are recorded by the data recording unit. The recorded data is used not only in the manufacturing process of matching the thickness of each part in the manufacture of the plunger 17, but also through the comparative analysis data, eliminating the design trial and error for the plunger 17 and achieving the optimum design.

As described above, according to the present invention, a plunger for a glass product molding apparatus for molding a glass product to manage the temperature of the plunger according to the thickness, size and type of the plunger to realize the optimum design for the plunger Temperature management system is provided.

Claims (7)

A temperature control system of a plunger for a glass product forming apparatus for arranging a glass product by pressurizing the glass gob, which is arranged to move up and down with a glass gob filling interval between a lower mold and the lower mold, An upwardly open preheating furnace having a heating member; A plunger disposed at an upper portion of the preheating furnace and insertable into the preheating furnace, the plunger having a coolant distribution member for flowing coolant therein; A lift drive unit coupled to the plunger and alternately repeating a heating position in which the plunger is inserted into the preheating furnace to rise to a predetermined temperature and a cooling position taken out of the preheating furnace and cooled; A plurality of temperature measuring sensors for selectively changing the plunger according to the thickness, size and type of the plunger, and measuring the temperature of each plunger according to the heating position and the cooling position for each of the replaced plungers; And a data recorder for recording the temperature value detected by the plurality of temperature measuring sensors. The method of claim 1, The heating member is a temperature management system of the plunger for glass forming apparatus, characterized in that the heater is arranged in a zigzag shape along the inner wall circumferential direction of the preheating furnace. The method of claim 1, The cooling water distribution member has a cooling water supply passage for supplying the cooling water into the plunger, and a cooling water return passage for discharging the cooling water cooling the plunger from the plunger. system. The method of claim 1, A support frame; And a slider provided at an upper end of the plunger and capable of lifting and lowering integrally with the plunger. The method of claim 4, wherein The elevating driving part is an actuator comprising a cylinder body coupled to the support frame and a cylinder rod extendable and contractable from the cylinder body and having an end coupled to the plunger. Temperature management system. The method according to claim 4 or 5, And a pair of guide guides disposed in both regions of the actuator for guiding the lifting and lowering of the slider and the plunger. The method of claim 1, Further comprising a preheating housing for enclosing the preheating furnace, The temperature control system of the plunger for the glass forming apparatus, characterized in that it comprises a plurality of rolling members installed on the lower end of the preheating furnace housing for moving the preheating furnace housing.