CN101045602A - Device and method for manufacturing glass shaping product - Google Patents

Abstract

The invention provides the device and method for manufacturing glass shaping product by melting raw materials. The glass shaping product manufacturing device 10 comprises: fusing device 100, having smelt tank used to melt raw materials and form melten glass and leading path 200 connected with smelt tank and used to lead melten glass out of the smelt tank; flowing-down device 300, making the melten glass flowing out through leading path 200 flow down; glass shaping device 400, having many shaping dies which are used to shape the melten glass flowing down; transportation device 800, transporting glass shaping products shaped by many shaping dies; and the first shifting device 500, used to shift glass shaping products to transportation device 800.

Description

The manufacture method of glass product manufacturing and glass molded article

Technical field

The present invention relates to the manufacture method of a kind of glass product manufacturing and glass molded article.

Background technology

Before, as the raw-material glass preformed member (glass gob, glass block, glass molded article) of optical element etc., be to utilize fusing device to fuse raw material glass, and made the melten glass of fusion gained be configured as suitable size, obtained therefrom.

Employed melting method in the manufacturing processed as the glass preformed member, known have continuous fusion and intermittence to fuse.For continuous fusion and since can carry out continuously frit input, fusion, clarification, and stir each step, thereby be suitable for situation such as mass production glass preformed member.On the other hand, for intermittently fusion because be the input of carrying out frit on single fusion jar discontinuous ground, fusion, clarification, and stir, thereby be suitable for the less situations such as glass preformed member of production gross production.

In the manufacturing of glass preformed member, importantly, the glass preformed member of making homogeneous accurately and having the fixed optics characteristic.Therefore, except that selecting suitable frit,, also need to carry out various considerations in the fusion of raw material glass, clarification, and agitation phases.Especially when intermittently melten glass is supplied with in fusion,, thereby become the unsettled reason of optical characteristics of glass preformed member because therefore raw material glass and discontinuous fusion easily produce bubble, striped etc. or devitrification.For solving described problem, the previous employing has following method,, uses the mixing tool with propeller wing that is, makes melten glass produce convection current, thereby method (with reference to patent documentation 1) such as stirs.

[patent documentation 1] Japanese patent laid-open 2-252626 communique

Summary of the invention

[problem that invention institute desire solves]

But, in recent years, in the time can making the little glass preformed member of bore, the problem of not meeting before then can producing.

Promptly, when producing the little glass preformed member of bore, in time per unit in the less glass manufacturing process of the consumption of melten glass, owing to melten glass through the temporary transient fusion that is shaped for a long time, therefore melten glass is placed under the state that has fused for a long time, can produce striped etc. in the melten glass, thereby produce the homogeneous problem of infringement melten glass.

Its reason is, because the proportion difference of the constituent of melten glass causes melten glass inhomogeneous, perhaps because the volatilization of the part composition in the melten glass causes near the composition of the melten glass of molten glass surface inhomogeneous.

The melten glass that is produced in the above described manner kept striped wherein and directly deliver to glass forming apparatus and form, the glass preformed member that is mixed with striped is shaped, the result produces the unusual glass preformed members of optical characteristics such as specific refractory power.Thereby, above-mentioned phenomenon can be called problem of the present invention.

The present invention develops in view of as mentioned above problem, and its problem can produce the less glass of defectives such as striped that is produced for the manufacture method of a kind of glass molding manufacturing installation and glass molded article is provided when making raw materials melt make glass molded article.

[technique means of dealing with problems]

In the process that glass melting is shaped, the reason that produces aforesaid striped or devitrification phenomenon may not be clear and definite.But present inventor etc. can obtain following opinion: the thermograde condition when making melten glass flow through path of navigation etc. also is one of its essential factor.

Therefore, discoveries such as present inventor, add thermal control to being connected in the fusion tank that makes raw materials melt and will making the formed melten glass of raw materials melt cause the path of navigation that flows down device, making becomes specific state of temperature spreading all on the length direction of path of navigation, glass molded article after melten glass and this melten glass are shaped is homogenized, thereby finish the present invention.

(1) a kind of glass product manufacturing, it possesses: fusing device has the raw materials melt of making and forms the fusion tank of melten glass and be connected in fusion tank and make melten glass effusive path of navigation from fusion tank; Flow down device, make that effusive melten glass flows down via path of navigation; Glass forming apparatus has a plurality of shaping dies that make the melten glass shaping that is flowed down; And the path of navigation control device, path of navigation is carried out temperature control, make the temperature of path of navigation along the flow direction of melten glass and step-down.

The glass product manufacturing of invention (1) possesses: fusing device has the raw materials melt of making and forms the fusion tank of melten glass and be connected in fusion tank and make melten glass effusive path of navigation from fusion tank; Flow down device, make that effusive melten glass flows down via path of navigation; Glass forming apparatus has a plurality of shaping dies that make the melten glass shaping that is flowed down; And the path of navigation control device, path of navigation is carried out temperature control, make the temperature of path of navigation along the flow direction of melten glass and step-down.

Suppose that when the effusive melten glass of fusion tank is flowed through the path of navigation the dull part that reduces but increase of the temperature of this melten glass is positioned at path of navigation, then in melten glass, easily produce bubble, striped or devitrification.

The method according to this invention, path of navigation temperature inside be along with melten glass is advanced and dull the reduction to flow direction, thereby be difficult to produce bubble, striped or devitrification in melten glass inside.

In addition, so-called in the present invention " temperature of path of navigation along the flow direction of melten glass and step-down " is meant dull reduction of temperature in the stove that flows when observing on a macro scale.For example, strict when following use direct heating, must not local then situation about raising though can run near particularly heat the position temperature, do not manage to get rid of described situation yet.

Yet, in the present invention, even if the dull partly tendency that reduces is opposite along with advancing to flow direction with the temperature of path of navigation, there is the local position of rising of temperature, but this temperature transfers the temperature in the rising moment and the temperature head that temperature thereafter has maximum value to from decline, in the temperature head of the temperature of glass melting outlet of still and path of navigation end preferred 15%, more preferably in 10%.Most preferably there is not the temperature rising point.

And, in the present invention, melten glass is flowed down by flowing down device through path of navigation.Herein, path of navigation for example is so-called " pipe ", and flowing down device is so-called " aperture ".The material in aperture self and shape mostly with manage differently, and sometimes the temperature in aperture is set at the temperature that is higher than pipe.

(2) according to invention 1 described glass product manufacturing, wherein said path of navigation control device possesses: be installed in thermoswitch in the described path of navigation, measure a plurality of temperature measuring devices of temperature of described path of navigation and the temperature control device of controlling the heating efficiency of described thermoswitch; Each of described a plurality of temperature measuring devices is to the temperature information of described temperature control device output with the temperature correlation of described path of navigation, described temperature control device is controlled the heating efficiency of described thermoswitch according to described temperature information, make the temperature of described path of navigation along described flow direction and step-down, described thermoswitch heats described path of navigation according to the control from described power controling machine structure.

In the glass product manufacturing of invention (2), described path of navigation control device possesses the thermoswitch that adds heat guide path, the temperature control device that reaches the heating efficiency of the described thermoswitch of control, and temperature control device is controlled according to the information that is installed in the temperature measuring device on the path of navigation.At this moment, temperature control device controlled temperature setter makes the temperature of described path of navigation along described flow direction and step-down.

According to invention (2),, in order to regulate the temperature in the path of navigation, and the mensuration temperature of the temperature measuring device path of navigation in can be fed back, so can carry out temperature regulation more very thin path of navigation as (1) described glass ware forming product manufacturing.And, be installed in the quantity of the temperature measuring device on the path of navigation and 1 Comparatively speaking, preferably a plurality of.

(3) according to (1) or (2) described glass product manufacturing, wherein said path of navigation control device possesses: a plurality of thermoswitchs are installed in the described path of navigation in mode spaced apart from each other; A plurality of temperature measuring devices are separately positioned between the adjacent thermoswitch, are used to measure the temperature of described path of navigation; Supply unit is to described thermoswitch outward current; And the power controling machine structure, control is from the electric current of described supply unit output; Each of described a plurality of temperature measuring devices is to the temperature information of described power controling machine structure output with the temperature correlation of described path of navigation, described power controling machine structure is according to described temperature information, control is from the current's intensity of described supply unit output, make the temperature of described path of navigation along described flow direction and step-down, described supply unit is according to the control from described power controling machine structure, to described a plurality of thermoswitchs each output certain strength electric current, each of described a plurality of thermoswitchs is utilized from the electric current of the certain strength of described supply unit output, and described path of navigation is heated.

The glass product manufacturing of invention (3) is to utilize the direct heating of electric current to control described path of navigation.In this device, the path of navigation control device possesses: a plurality of thermoswitchs are installed in the path of navigation in mode spaced apart from each other; A plurality of temperature measuring devices are separately positioned between the adjacent thermoswitch; Supply unit is to the thermoswitch outward current; And the power controling machine structure, control is from the electric current of supply unit output.And, a plurality of temperature measuring devices are separately to the temperature information of power controling machine structure output with the temperature correlation of path of navigation, the power controling machine structure is according to temperature information, control is from the current's intensity of supply unit output, make the temperature of path of navigation along flow direction and step-down, supply unit is according to the control from the power controling machine structure, to a plurality of thermoswitchs each output certain strength electric current, each of a plurality of thermoswitchs is utilized from the electric current of the certain strength of supply unit output, and path of navigation is heated.

Described direct heating is compared with following indirect heating, has the feature of the peripheral space in dispensing with bootstrap path.And, the temperature changing speed of the path of navigation that direct heating produced, faster than the temperature changing speed of the path of navigation that indirect heating produced, therefore can at short notice path of navigation be adjusted to the temperature of expection.

(4) according to (1) or (2) described glass product manufacturing, wherein said path of navigation control device possesses: thermoswitch, to install with the mode of described path of navigation adjacency; A plurality of temperature measuring devices are measured the temperature of described path of navigation; Feedwaies such as fuel are to described thermoswitch fueling and air; And temperature control device, fuel and air capacity that control is supplied with from feedwaies such as described fuel; Described thermoswitch is by the mode to path of navigation spray flame flow, from the indirect heating path of navigation, each of described a plurality of temperature measuring devices is to the temperature information of temperature control device output with the temperature correlation of described path of navigation, described temperature control device is according to described temperature information, control is from feedwaies such as described fuel and fuel quantity and the air capacity supplied with, make the temperature of described path of navigation along described flow direction and step-down, feedwaies such as described fuel are according to the control from described temperature control device, supply with the fuel and the air of specified quantitative to described thermoswitch, each of described a plurality of thermoswitchs makes from feedwaies such as described fuel and the fuel combustion of supplying with, thereby heats described path of navigation.

The glass product manufacturing of invention (4) is controlled described path of navigation indirect heating by utilize flame flow etc. from the outside.In this device, possess: thermoswitch, to install with the mode of described path of navigation adjacency; A plurality of temperature measuring devices are measured the temperature of described path of navigation; Feedwaies such as fuel are to described thermoswitch fueling and air; And temperature control device, fuel and air capacity that control is supplied with from feedwaies such as described fuel.And, described thermoswitch is by the mode to path of navigation spray flame flow, from the indirect heating path of navigation, each of described a plurality of temperature measuring devices is to the temperature information of temperature control device output with the temperature correlation of described path of navigation, described temperature control device is according to described temperature information, control is from feedwaies such as described fuel and fuel quantity and the air capacity supplied with, make the temperature of described path of navigation along described flow direction and step-down, feedwaies such as described fuel are according to the control from described temperature control device, described thermoswitch is supplied with the fuel and the air of specified quantitative, each of described a plurality of thermoswitchs makes from feedwaies such as described fuel and the fuel combustion of supplying with, thereby heats described path of navigation.

Invention (4) is called as so-called indirect heating with respect to the direct heating of the glass ware forming product manufacturing described in (3).Indirect heating is compared with described direct heating, and the feature that has is to add the part of wider scope of heat guide path.

And, the tint permanence of the glass of manufacturing, according to the material of institute's fused glass or path of navigation, better than direct energising heating sometimes.In addition, also can prolong the life-span of path of navigation self.

Herein, flame flow etc. are meant except that flame flow, also manage to comprise high temperature gas flow, and as employed thermoswitch, can be envisioned for well-known gas burner, heavy oil burner etc. can add the heating appliances of heat guide path by making fuel combustion.Certainly, also can be also with energising direct heating in the invention (3) and the indirect heating in the invention (4).

(5) according to each described glass product manufacturing in (1) to (4), it more possesses carrying device, the glass ware forming product that conveyance is shaped by a plurality of shaping dies respectively.

The glass product manufacturing of invention (5) more possesses carrying device, the glass ware forming product that conveyance is shaped by a plurality of shaping dies respectively.By using this carrying device, can be to subsequent step with the glass molded article conveyance that is shaped by shaping dies, for example, weight determination step or packaging step.

(6) according to (5) described glass product manufacturing, it more possesses the 1st shifting apparatus, and glass molded article is transferred load to carrying device one by one from glass forming apparatus.

The glass product manufacturing of invention (6) more possesses the 1st shifting apparatus, and glass molded article is transferred load to carrying device one by one from glass forming apparatus.By using this shifting apparatus, the glass molded article on the glass forming die can be transferred to the conveyance step.

(7) according to (5) or (6) described glass product manufacturing, it more possesses: weight selecting device, this weight selecting device have the Weight measurement device of being measured by the weight of the glass molded article of carrying device institute conveyance, and sort the selecting device of glass molded article according to the measurement result of Weight measurement device; And the 2nd shifting apparatus, transfer glass molded article between carrying device and weight selecting device.

The glass product manufacturing of invention (7) more possesses: weight selecting device, this weight selecting device have Weight measurement device that the weight of the glass molded article that the conveyance of carrying device institute is measured, and sort the selecting device of glass molded article according to the measurement result of Weight measurement device; And the 2nd shifting apparatus, transfer glass molded article between carrying device and weight selecting device.Owing to possess this weight selecting device, thereby the glass molded article that can sort in the specific standard scope reaches the not glass molded article in the specific standard scope.

(8) according to each described glass product manufacturing in (1) to (7), wherein path of navigation is made of platinum or platinum alloy tubulation.

In the glass product manufacturing of invention (8), path of navigation is made of platinum or platinum alloy tubulation.Path of navigation is owing to use platinum or platinum alloy, thereby can high temperature resistant fusion glass.

(9) according to each described glass product manufacturing in (1) to (8), wherein a plurality of shaping dies each in, be formed with the specific continuing surface of accepting melten glass, continuing surface is made of the porous material with ventilation property, each inside at shaping dies, be formed with specific gas supply chamber, this glass product manufacturing more possesses: the gas feed path that forms continuously in the gas supply chamber and link with the gas feed path and can be to the gas supply source of gas supply chamber supply gas.

In the glass product manufacturing of invention (9), a plurality of shaping dies each in, be formed with the specific continuing surface of accepting melten glass, continuing surface is made of the porous material with ventilation property, each inside at shaping dies, be formed with specific gas supply chamber, this glass product manufacturing more possesses: the gas feed path that forms continuously in the gas supply chamber and link with the gas feed path and can be to the gas supply source of gas supply chamber supply gas.Utilize the said apparatus form, can when melten glass is shaped, make the melten glass come-up, make that continuing surface and glass surface are that non-contacting state is shaped.

(10) according to each described glass product manufacturing in (1) to (9), wherein the path of navigation control device carries out temperature control to path of navigation, thermograde in the scope till making from the specific position of path of navigation to the end of downstream side of path of navigation, with from the upstream-side-end of path of navigation to the specific position of path of navigation till scope in thermograde compare comparatively gentle.

In the glass product manufacturing of invention (10), the path of navigation control device carries out temperature control to path of navigation, thermograde in the scope till making from the specific position of path of navigation to the end of downstream side of path of navigation is compared comparatively gentle with the thermograde in the upstream-side-end in the bootstrap path scope till the specific position of path of navigation.

As invention (1), the temperature in the preferred glass path of navigation is dull the reduction along with advancing to flow direction.Especially ought carry out temperature regulation, make the absolute value of negative temperature gradient along with melten glass is up and then when diminishing at flow direction, particularly glass molded article is difficult to be subjected to the influence of bubble, striped or devitrification etc.That is, preferably, the thermograde of path of navigation is along with up at flow direction and then gentle gradually.

And, identical with the situation of (1), " thermograde in the scope till from the specific position of path of navigation to the end of downstream side of path of navigation; with from the upstream-side-end of path of navigation to the specific position of path of navigation till scope in thermograde compare comparatively gentle ", be meant when observing on a macro scale, for example, as when the following use direct heating, strict, near the thermograde in position is gentle partly to be reduced even if particularly heat, and does not also manage to get rid of this situation.

(11) according to each described glass product manufacturing in (2) to (9), wherein the path of navigation control device carries out temperature control to path of navigation, makes all temperature of being measured respectively by a plurality of temperature measuring devices, all is lower than the temperature of fusion tank.

In the glass product manufacturing of invention (11), the path of navigation control device carries out temperature control to path of navigation, makes all temperature of being measured respectively by a plurality of temperature measuring devices, all is lower than the temperature of fusion tank.This is according to following opinion, that is, if the temperature in the path of navigation, is then fused the influence that glass is vulnerable to striped etc. greater than the temperature of fusion tank.

(12) according to each described glass product manufacturing in (1) to (11), wherein the path of navigation control device carries out temperature control, scope naturally cooling till making from the upstream-side-end of path of navigation to the specific position of path of navigation, and the thermograde of the scope till making from the specific position of path of navigation to the end of downstream side of path of navigation is compared comparatively gentle with the thermograde of naturally cooling.

In the glass product manufacturing of invention (12), the path of navigation control device carries out temperature control, scope naturally cooling till making from the upstream-side-end of path of navigation to the specific position of path of navigation, and the thermograde of the scope till making from the specific position of path of navigation to the end of downstream side of path of navigation is compared comparatively gentle with the thermograde of naturally cooling.This is according to following opinion, that is, compare comparatively gentlely if the thermograde in the path of navigation is set at thermograde in the path of navigation with naturally cooling, and then melten glass is difficult to be subjected to the influence of striped etc.

(13) a kind of manufacture method of forming of glass goods, it comprises: the fusion step makes the melten glass that is obtained by raw material fusion in fusion tank flow out via path of navigation; Flow down step, described effusive melten glass is flowed down; And forming step, the described melten glass that flows down is shaped; In described fusion step, described path of navigation is subjected to temperature control by the path of navigation control device, makes its temperature along flow direction and step-down.

The manufacture method of the forming of glass goods of invention (13) comprising: the fusion step makes the glass that melts that utilizes fusing device to make raw material fusion in fusion tank be obtained flow out via path of navigation; Flow down step, utilization flows down device flows down effusive melten glass; And forming step, the melten glass that utilizes building mortion to make to be flowed down is shaped; In the fusion step, path of navigation is subjected to temperature control by the path of navigation control device, makes its temperature along flow direction and step-down.

(14) manufacture method of basis (13) described forming of glass goods, wherein

In described fusion step, by being used to measure a plurality of temperature measuring devices of described path of navigation temperature, to the temperature information of described temperature control device output with the temperature correlation of described path of navigation;

Described temperature control device is controlled the thermoswitch that is installed in the described path of navigation according to described temperature information, makes the temperature of described path of navigation along described flow direction and step-down;

Described thermoswitch heats described path of navigation according to the control from described temperature control device.

According to invention (14), in order to regulate the temperature in the path of navigation, and the mensuration temperature of the temperature measuring device path of navigation in can be fed back, so can carry out temperature regulation more very thin path of navigation.And, be installed in the quantity of the temperature measuring device on the path of navigation and 1 Comparatively speaking, preferably a plurality of.

(15) according to the manufacture method of (13) or (14) described glass molded article, wherein said path of navigation control device possesses: a plurality of thermoswitchs are installed in the described path of navigation in mode spaced apart from each other; A plurality of temperature measuring devices are separately positioned between the adjacent thermoswitch, measure the temperature of described path of navigation; Supply unit is to described thermoswitch outward current; And the power controling machine structure, control is from the electric current of described supply unit output; Described a plurality of temperature measuring device is to the temperature information of described power controling machine structure output with the temperature correlation of described path of navigation, described power controling machine structure is according to described temperature information, control is from the current's intensity of described supply unit output, make the temperature of described path of navigation along described flow direction and step-down, described supply unit is according to the control from described power controling machine structure, to described a plurality of thermoswitchs each output certain strength electric current, each of described a plurality of thermoswitchs is utilized from the electric current of the certain strength of described supply unit output, and described path of navigation is heated.

The manufacture method of the forming of glass goods of invention (15) is the method for (13) or (14), is to control described path of navigation by the direct heating of electric current.Promptly, in the method for (13) or (14), described a plurality of temperature measuring device is to the temperature information of described power controling machine structure output with the temperature correlation of described path of navigation, described power controling machine structure is according to described temperature information, control is from the current's intensity of described supply unit output, make the temperature of described path of navigation along described flow direction and step-down, described supply unit is according to the control from described power controling machine structure, to described a plurality of thermoswitchs each output certain strength electric current, each of described a plurality of thermoswitchs is utilized from the electric current of the certain strength of described supply unit output, and described path of navigation is heated.

(16) according to each described manufacture method of having used the glass molded article of glass product manufacturing in (13) to (15), wherein said path of navigation control device possesses: thermoswitch, install in the mode adjacent with described path of navigation; A plurality of temperature measuring devices are measured the temperature of described path of navigation; Feedwaies such as fuel are to described thermoswitch fueling and air; And temperature control device, fuel and air capacity that control is supplied with from feedwaies such as described fuel; Described a plurality of temperature measuring device is to the temperature information of described temperature control device output with the temperature correlation of described path of navigation, described temperature control device is according to described temperature information, fuel quantity and air capacity that control is supplied with from feedwaies such as described fuel, make the temperature of described path of navigation along described flow direction and step-down, feedwaies such as described fuel are according to the control from described temperature control device, supply with the fuel and the air of specified quantitative to described thermoswitch, each of described a plurality of thermoswitchs makes the fuel combustion of supplying with from feedwaies such as described fuel, thereby described path of navigation is heated.

The manufacture method of forming of glass goods of invention (16) is each described method in (13) to (15), by utilize flame flow etc. from the outside described path of navigation indirect heating is controlled.Promptly, in (13) to (15) each described method, described a plurality of temperature measuring device is to the temperature information of described temperature control device output with the temperature correlation of described path of navigation, described temperature control device is according to described temperature information, fuel quantity and air capacity that control is supplied with from feedwaies such as described fuel, make the temperature of described path of navigation along described flow direction and step-down, feedwaies such as described fuel are according to the control from described temperature control device, supply with the fuel and the air of specified quantitative to described thermoswitch, each of described a plurality of thermoswitchs makes the fuel combustion of supplying with from feedwaies such as described fuel, thereby described path of navigation is heated.

(17) according to the manufacture method of each described glass molded article in (13) to (16), it more comprises the conveyance step, utilizes carrying device to come the glass molded article of conveyance by the forming step formed thereby.

The manufacture method of the glass molded article of invention (17) more comprises the conveyance step, utilizes carrying device to come the glass molded article of conveyance by the forming step formed thereby.

(18) according to the manufacture method of each described glass molded article in (13) to (17), it more comprises the 1st transfer step, utilizes the 1st shifting apparatus that glass molded article is transferred load to carrying device one by one.

The manufacture method of the glass molded article of invention (18) more comprises the 1st transfer step, utilizes the 1st shifting apparatus that glass molded article is transferred load to carrying device one by one.

(19) manufacture method of each described glass molded article in the basis (13) to (18), wherein fuse path of navigation in the step by platinum or platinum alloy tubulation and constitute, a plurality of shaping dies of forming step separately in, be formed with the specific continuing surface of accepting melten glass, continuing surface is made of the porous material with ventilation property, each inside at a plurality of shaping dies, be formed with specific gas supply chamber, further, be formed with the gas feed path in the gas supply chamber continuously, link in this gas feed path that have can be to the gas supply source of gas supply chamber supply gas, be supplied to the gas of gas supply chamber from the gas supply source, to the ventilation of continuing surface side, melten glass is being to be shaped under the non-contacting state by the gas in the ventilation of continuing surface side with this continuing surface from the gas supply chamber.

In the manufacture method of the glass molded article of invention (19), path of navigation in the fusion step is made of platinum or platinum alloy tubulation, be formed with the specific continuing surface of accepting melten glass on a plurality of shaping dies in forming step separately, continuing surface is made of the porous material with ventilation property, each inside at a plurality of shaping dies is formed with specific gas supply chamber, further, be formed with the gas feed path in the gas supply chamber continuously, having with this gas feed path binding can be to the gas supply source of gas supply chamber supply gas, ventilate to the continuing surface side from the gas supply chamber to gas supply chamber gas supplied from the gas supply source, melten glass utilizes the gas in the ventilation of continuing surface side, is being to be shaped under the non-contacting state with this continuing surface.

(20) according to the manufacture method of each described glass molded article in (13) to (19), it more comprises: weight sorts step, utilizes the weight selecting device to measure and sort the weight of the glass molded article in the conveyance step; And the 2nd transfer step, utilize the 2nd shifting apparatus, transfer glass molded article between the weight selecting device that the carrying device and the weight of conveyance step sorts step.

The manufacture method of the glass molded article of invention (20) comprising: weight sorts step, utilizes the weight selecting device to measure and sort the weight of the glass molded article in the conveyance step; And the 2nd transfer step, utilize the 2nd shifting apparatus, transfer glass molded article between the weight selecting device that the carrying device and the weight of conveyance step sorts step.

(21) according to each described manufacture method of having used the glass molded article of glass product manufacturing in (13) to (20), wherein utilize the path of navigation control device that described path of navigation is carried out temperature control, thermograde in the scope till making from the specific position of described path of navigation to the end of downstream side of described path of navigation, with from the upstream-side-end of described path of navigation to the specific position of described path of navigation till scope in thermograde compare comparatively gentle.

In the manufacture method of the glass molded article of invention (21), the path of navigation control device carries out temperature control to path of navigation, thermograde in the scope till making from the specific position of path of navigation to the end of downstream side of path of navigation, with from the upstream-side-end of path of navigation to the specific position of path of navigation till scope in thermograde compare comparatively gentle.

(22) manufacture method of each described glass molded article in the basis (13) to (21), wherein said path of navigation control device carries out temperature control to described path of navigation, make all temperature measure by described a plurality of temperature measuring devices respectively, all be lower than the temperature of described fusion tank.

In the manufacture method of glass molded article of invention (22), the path of navigation control device carries out temperature control to path of navigation, makes all temperature of being measured by a plurality of temperature measuring devices respectively, all is lower than the temperature of fusion tank.This is according to following opinion, that is, if the temperature in the path of navigation, is then fused the influence that glass is vulnerable to striped etc. greater than the temperature of fusion tank.

(23) according to each described manufacture method of having used the glass molded article of glass product manufacturing in (13) to (22), wherein utilize the path of navigation control device to carry out temperature control, scope naturally cooling till making from the upstream-side-end of described path of navigation to the specific position of described path of navigation, and the thermograde of the scope till making from the specific position of described path of navigation to the end of downstream side of described path of navigation is compared comparatively gentle with the thermograde of naturally cooling.

In the manufacture method of the glass molded article of invention (23), the path of navigation control device carries out temperature control, scope naturally cooling till making from the upstream-side-end of path of navigation to the specific position of path of navigation, and the thermograde of the scope till making from the specific position of path of navigation to the end of downstream side of path of navigation is compared comparatively gentle with the thermograde of naturally cooling.This is according to following opinion, that is, compare comparatively gentlely if the thermograde in the path of navigation is set at thermograde in the path of navigation with naturally cooling, and then melten glass is difficult to be subjected to the influence of striped etc.

(24) a kind of manufacture method of optical element, it comprises accurate pressing step, will utilize the glass molded article of the manufacture method manufacturing of each described glass molded article in (13) to (23) to carry out precise press molding.

The manufacture method of optical element of invention (21) comprises accurate pressing step, and the glass molded article of manufacturing is carried out precise press molding.

In the time of will utilizing the preformed member of the method manufacturing of (13) to (20) to carry out precise press molding, also the preformed member manufacturing step can be linked to each other with accurate pressing step, making to fuse till the compacting of optical element from glass becomes the successive step.On the contrary, also can make preformed member manufacturing and accurate pressing step discontinuous.

[effect of invention]

According to the present invention, can provide a kind of and make raw materials melt and make the glass product manufacturing of less glass molded article such as bubble, striped and the manufacture method of glass molded article.

Description of drawings

Fig. 1 is one of the structure in general of glass product manufacturing of the present invention illustration figure.

Fig. 2 is one of the section overview illustration figure of fusing device that constitutes the part of glass product manufacturing shown in Figure 1.

Fig. 3 be constitute glass ware forming product manufacturing shown in Figure 1 a part path of navigation and flow down one of the section overview illustration figure of pipe.

Fig. 4 is one of the structure in general example of glass forming apparatus that constitutes the part of glass ware forming product manufacturing shown in Figure 1.

Fig. 5 is the vertical view of glass forming apparatus shown in Figure 4.

Fig. 6 is one of the vertical section overview example of the shaping dies structure of glass forming apparatus shown in Figure 5.

Fig. 7 is one of the positive overview example of the 1st shifting apparatus structure that constitutes the part of glass ware forming product manufacturing shown in Figure 1.

Fig. 8 is one of the upper surface overview of the 1st a shifting apparatus structure shown in Figure 7 example.

Fig. 9 is one of the structure in general example of carrying device that constitutes the part of glass ware forming product manufacturing shown in Figure 1.

Figure 10 is to drip one of the state example of melten glass of shaping dies from the pipe that flows down shown in Figure 3.

Figure 11 is one of the succeeding state of a Figure 10 example.

Figure 12 is the interior temperature map of path of navigation in the preferable example of the present invention.

Figure 13 is not to be temperature map in the path of navigation in the comparative example of the invention process form.

[explanation of symbol]

10 glass product manufacturings

100 fusing devices

200 path of navigation

300 flow down device

400 glass forming apparatus

500 the 1st shifting apparatus

600 the 2nd shifting apparatus

700 weight selecting devices

800 carrying devices

Embodiment

[glass product manufacturing]

As shown in Figure 1, glass product manufacturing 10 possesses: be used to fuse frit fusing device 100, make that melten glass C by fusing device 100 fusion flows down flow down device 300 and be used for by flowing down the glass forming apparatus 400 that melten glass C that device 300 flows down is shaped.

As shown in Figure 1, glass product manufacturing 10 can more possess: carrying device 800, and conveyance is by the glass molded article E of glass forming apparatus 400 formed therebies; The 1st shifting apparatus 500 will transfer load to carrying device 800 by the glass molded article E of glass forming apparatus 400 formed therebies; Weight selecting device 700 is measured the weight by the glass molded article E of 800 conveyances of carrying device, and sorts according to its measurement result; And the 2nd shifting apparatus 600, will transfer load to weight selecting device 700 by the glass molded article E of 800 conveyances of carrying device.

[fusing device and flow down device]

As shown in Figure 2, fusing device 100 comprises: fusion tank 110 possesses calciner 120 in inside; Heating element 116 utilizes energising to generate heat, in order to calciner 120 heat supplieds; And mixing tool 140, in order to stir the melten glass C of calciner 120 inside.Calciner 120 is input, fusion, the clarification that is used for carrying out frit, the fire-resistant crucible that reaches stirring.Fire-resistant crucible preference is as gold, platinum, platinum alloy, quartz crucible.

Fusion tank 110 constitutes the intermittent type batch furnace, have make frit fusion, clarification, until the function that homogenizes, link stove but also can constitute the coupled that above-mentioned functions is linked for haplotype.

Calciner 120 preferably possesses hemisphere and right cylinder in that the convection agitation that is formed at calciner 120 inside is indoor.At this moment, preferably, make hemisphere and right cylinder, make on hemisphere and the cylindrical medullary ray that is centered close to calciner 120 in the inner combination of calciner 120.Yet the convection agitation chamber that is formed on calciner 120 inside is not to be defined in this.That is, as long as the convection agitation chamber has the shape that can not cause that melten glass C is detained.

Preferably, calciner 120 have more be ready for use on the throw-in part 126 that drops into frit, at the circular open portion 130 of the topmost opening of throw-in part 126 and the lid 128 that covers peristome 130.

And the mixing tool 140 that is configured in calciner 120 inside has turning axle 142, reaches the propeller wing 144 that is fixed on this turning axle integratedly.The shape of mixing tool 140 is as long as be made of the spirrillum propeller.The quantity of the mixing tool in each calciner 120 can be one, also can be a plurality of.Melten glass also can not use mixing tool to stir, and for example, can use the well-known stirring means such as bubbling of air or rare gas element, also can use degassing infusions such as weisspiessglanz, the interpolation and the stirring of the infusion that outgases simultaneously.

Fusion tank 110 constitutes the intermittent type batch furnace, have make frit fusion, clarification, until the function that homogenizes, link stove but also can constitute the coupled that above-mentioned functions is linked for haplotype.

The heating arrangements that heating element 116 conducts that use is generated heat by energising are heated calciner 120, but be not to be defined in this.For example, heating means also can be method that heats by fuel combustion and method or the high-frequency induction heating method that calciner 120 is directly switched on and heated.That is, as long as can heat calciner 120 equably, any heating means all can.

As shown in Figure 3, an end of path of navigation 200 is connected in the cut-out teeter column 124 lateral foots of calciner 120.The other end of path of navigation 200 constitutes the following device 300 that flows down.Path of navigation 200 possesses: straight line downtake 210 from one end to the other side descends with roughly the same ratio; Steering tube 220, the melten glass that is connected the feasible straight line downtake 210 of flowing through with straight line downtake 210 continuously turns to vertical direction; And flowing down pipe 230, the one end is connected in steering tube 220 and the other end makes melten glass drip to the shaping dies 430 (with reference to Fig. 4) of glass forming apparatus 400.In this example, constitute by steering tube 220 and outlet pipe and to flow down device 300.

Path of navigation 200 can use by the direct heating that path of navigation self energising heat or utilize indirect heating utensil any one or two kinds of from the indirect heating of outside heating, carries out temperature and controls.

When direct heating path of navigation 200, by to its directly energising heat, path of navigation 200 is by the viscosity adjustment that flows through the melten glass of path of navigation 200 inside can being constituted by the platinum or the platinum alloy of particular value.Path of navigation 200 is made of elongated tubular, but is not to be defined in this, and its shape also can spread all over the flow direction of melten glass and open groove as top.

Path of navigation 200 utilizes the path of navigation control device and is subjected to temperature control.The path of navigation control device can be regulated from flowing down the amount of flowing down of the melten glass C time per unit that device 300 flowed down by the temperature of control path of navigation 200.

The path of navigation control device carries out temperature control, makes the temperature of path of navigation 200 along the flow direction F of melten glass C and step-down.Specifically, the temperature of path of navigation 200 is controlled to be, the thermograde of the scope till making from the specific position of path of navigation 200 to end of downstream side is compared comparatively gentle with the thermograde of scope till from the upstream-side-end of path of navigation 200 to the specific position of path of navigation.For example, can carry out temperature control in the following manner, that is, the scope naturally cooling till making from the end, upstream of path of navigation 200 to specific position, and the temperature of the scope till making from this specific position to downstream end reduces to compare comparatively gentle thermograde with naturally cooling.

The path of navigation control device for example possesses: the 1st reed plate the 251, the 2nd reed plate the 252, the 3rd reed plate the 253, the 4th reed plate 254 and the aperture reed plate 255 as thermoswitch of installing in mode spaced apart from each other on the surface of path of navigation 200; Be arranged on the 1st temperature measuring device the 256, the 2nd temperature measuring device the 257, the 3rd temperature measuring device 258 and the 4th temperature measuring device 259 between the adjacent thermoswitch separately; Not shown supply unit to described thermoswitch outward current; And the not shown power controling machine structure of controlling the electric current of exporting by supply unit.

The 1st reed plate 251 is installed in the position of the most close fusion tank 110.The 2nd reed plate 252 is installed in the central authorities of straight line downtake 210.The 3rd reed plate 253 is arranged on the linking part of straight line downtake 210 and steering tube 220.The 4th reed plate 254 is arranged on steering tube 220 and the linking part that flows down pipe 230.Aperture reed plate 255 is arranged near the foot that flows down pipe 230.

By the 1st reed plate the 251, the 2nd reed plate the 252, the 3rd reed plate the 253, the 4th reed plate 254 and aperture reed plate 255 are applied particular current, make path of navigation 200 act on, generate heat and then path of navigation 200 heating as resistance.Thus, path of navigation control device controllable flow is crossed the discharge of the melten glass C that flows down pipe 230 inside.

The 1st temperature measuring device the 256, the 2nd temperature measuring device the 257, the 3rd temperature measuring device 258 and the 4th temperature measuring device 259 are configured between the 1st reed plate 251 and the 2nd reed plate 252 separately, between the 2nd reed plate 252 and the 3rd reed plate 253, between the 3rd reed plate 253 and the 4th reed plate 254, and the 4th reed plate 254 and aperture reed plate 255 between.

The 1st temperature measuring device the 256, the 2nd temperature measuring device the 257, the 3rd temperature measuring device 258 and the 4th temperature measuring device 259 are measured the temperature of the path of navigation 200 of installed position separately.And, will export not shown power controling machine structure to the temperature information of the temperature correlation of being measured.

Not shown power controling machine structure is controlled the current's intensity of exporting from supply unit according to the temperature information of exporting separately from the 1st temperature measuring device the 256, the 2nd temperature measuring device the 257, the 3rd temperature measuring device 258 and the 4th temperature measuring device 259.Particularly, the current's intensity that power controling machine structure control is exported respectively to the 1st reed plate the 251, the 2nd reed plate the 252, the 3rd reed plate the 253, the 4th reed plate 254 and aperture reed plate 255 from supply unit makes the temperature of path of navigation 200 along flow direction F and step-down.

Not shown supply unit is according to the control from the power controling machine structure, exports the electric current of certain strength to the 1st reed plate the 251, the 2nd reed plate the 252, the 3rd reed plate the 253, the 4th reed plate 254 and aperture reed plate 255 respectively.

Particularly, so that the temperature of being measured according to the mode that the order of the 1st temperature measuring device the 256, the 2nd temperature measuring device the 257, the 3rd temperature measuring device 258 and the 4th temperature measuring device 259 raises successively, is exported the electric current of certain strength respectively to the 1st reed plate the 251, the 2nd reed plate the 252, the 3rd reed plate the 253, the 4th reed plate 254 and aperture reed plate 255 from supply unit.Consequently, carry out temperature control in the following manner, that is, make the temperature utilize the 1st temperature measuring device the 256, the 2nd temperature measuring device the 257, the 3rd temperature measuring device 258 and the 4th temperature measuring device 259 to be measured separately, all be lower than the temperature of the melten glass C in the fusion tank 110.

Specifically, according to regulate the current's intensity of being exported to the 1st reed plate 251 and the 2nd reed plate 252 from the temperature information of the 1st temperature measuring device 256 output, with the temperature of the straight line downtake 210 between this may command the 1st reed plate 251 and the 2nd reed plate 252.

Equally, according to regulate the current's intensity of being exported to the 2nd reed plate 252 and the 3rd reed plate 253 from the temperature information of the 2nd temperature measuring device 257 output, with the temperature of the straight line downtake 210 between this may command the 2nd reed plate 252 and the 3rd reed plate 253.

And, according to regulate the current's intensity of being exported to the 3rd reed plate 253 and the 4th reed plate 254 from the temperature information of the 3rd temperature measuring device 258 output, with the temperature of the steering tube 220 between this may command the 3rd reed plate 253 and the 4th reed plate 254.

And, according to regulate the current's intensity of being exported to the 4th reed plate 254 and aperture reed plate 255 from the temperature information of the 4th temperature measuring device 259 output, manage 230 temperature with flowing down between this may command the 4th reed plate 254 and the aperture reed plate 255.

Then, the situation of just path of navigation 200 being carried out indirect heating describes.At this moment, do not have than big-difference when temperature condition in the path of navigation and direct heating, but, preferably, be provided with a plurality of thermoswitchs at the path of navigation periphery in order to carry out temperature control, for example, gas burner or heavy oil burner.Herein, thermoswitch can use the fuel of being supplied with by feedwaies such as fuel to add heat guide path separately.Behind the temperature information that temperature control device is accepted to be produced by temperature measuring device 256～259, the fuel that the temperature control device adjusting is supplied with by feedwaies such as fuel etc., the heating efficiency of limit temperature setter, thus the thermograde of path of navigation is adjusted to described form.

In the present invention, the heating of path of navigation can use direct heating, indirect heating or this two.When indirect heating, preferably use a plurality of thermoswitchs, but be not to be defined in this.For example, if large-scale combustors etc., then can be under the state of keeping the fixed combustion amount, partly regulate the distance of itself and path of navigation, carry out temperature regulation with this.

[glass forming apparatus]

Fig. 4 is one of the structure in general of glass forming apparatus 400 example.Glass forming apparatus 400 summarys have: the universal stage 422 of free rotary ground supporting and be configured on the concentric position of universal stage 422 peripheries and can accept from a plurality of shaping dies 430 of the effusive melten glass in lower end that flows down pipe 230.

Particularly, glass forming apparatus 400 has: discoid universal stage 422, but its free rotary ground supporting turning axle 425, and can be to the right or to anticlockwise; And and not shown rotation drive source banded turning axle 425.Glass forming apparatus 400 also can be provided with refrigerating unit 423 at the periphery of turning axle 425 according to situation.

Glass forming apparatus 400 further will through the heating gas from being located at the pipe core on the turning axle 425, be supplied to the inside 433 (with reference to Fig. 6) of shaping dies 430 by the gas feed path 426 of contained gas pipe 427,428,429, make described gas from the pore ejection of opening on the concavity forming face 430a of shaping dies 430.

And, glass forming apparatus 400 and near, be positioned near the mobile route of shaping dies 430, and dispose successively according to burner 450, the order that flows down pipe the 230 and the 1st shifting apparatus 500 towards the sense of rotation of universal stage 422 and to flow down pipe the 230 and the 1st shifting apparatus 500, described flowing down on the mobile route that pipe 230 is positioned at shaping dies 430 and as the melten glass feed mechanism; Described the 1st shifting apparatus 500 is positioned on the mobile route of shaping dies 430 and as glass molded article E recovering mechanism.Kind according to the glass of formed thereby also can be provided with the burner 450 as the shaping dies heating unit that shaping dies 430 is heated individually.

Burner 450 is configured in when universal stage 422 remains static can carry out the position that flame shines by the shaping dies 430 in a plurality of shaping dies 430.

Directly over one of a plurality of shaping dies 430 when flowing down pipe 230 lower end 230a and being arranged in universal stage 422 and the remaining static shaping dies 430.

Directly over one of a plurality of shaping dies 430 when the 1st shifting apparatus 500 is arranged in universal stage 422 and remains static shaping dies 430.The 1st shifting apparatus 500 is the Rotate 180 degree in the horizontal direction, and can lifting on above-below direction.The 1st shifting apparatus 500 is also referred to as withdrawing device.

As shown in Figure 5, a plurality of shaping dies 430 are configured on the universal stage 422 in the mode on the concentric position that is positioned at universal stage 422 peripheries.

Shaping dies 430 is subjected to temperature control and is under the specific temperature condition under the state of accepting melten glass C and/or glass molded article E.For example, for shaping dies 430, utilization is as the burner 450 of shaping dies heating unit, heat the shaping dies 430 under the state that undertakes melten glass C and/or do not undertake shaping dies 430 under the state of melten glass C, from accepting melten glass C, during glass molded article E transferred load to carrying device 800 by the 1st shifting apparatus 500, the temperature of described shaping dies 430 under the state that undertakes melten glass C and/or glass molded article E was controlled.

For example, shaping dies 430 is subjected to temperature control, make from accepting melten glass C, during glass molded article E transfers load to carrying device 800 by the 1st shifting apparatus 500, the temperature of the particular moment of shaping dies 430 under the state that undertakes melten glass C or glass molded article E is higher than the temperature when undertaking melten glass C.

And, for example, shaping dies 430 is subjected to temperature control, make from accepting melten glass C, during glass molded article E transfers load to carrying device 800 by the 1st shifting apparatus 500, under the state that undertakes melten glass C or glass molded article E, a plurality of shaping dies 430 separately top temperature and the difference of minimum temperature be below 10 ℃.

And for example, the shaping dies 430 of accepting particular glass molding E is subjected to temperature control, make its temperature be higher than this particular glass molding E by 500 transfers of the 1st shifting apparatus temperature extremely as the accepting container of specific supporting plate 862.

That is, in heating during shaping dies, quantity, the position of heating arrangements are not particularly limited among the present invention, preferably, and according to glass ingredient and appropriate change.

As shown in Figure 6, at the upper surface of shaping dies 430, be formed with concavity forming face 430a as continuing surface.Concavity forming face 430a be accept from flow down pipe 230 lower end 230a the face of effusive melten glass C.For concavity forming face 430a, preferably, constituted by the ventilation property porous material body 431 that is formed with the pore (not shown) that can spray gas.Inside 433 at porous material body 431 is formed with the space.The effect of shaping dies 430 is, 433 space, makes the melten glass come-up that is positioned at concavity forming face 430a therefrom, thereby preformed member is shaped to concavity forming face 430a ejection gas by pore within the porous material body 431.

And, being shaped in order to make the melten glass come-up, shaping dies may not be to be made of porous material, also can be the Japanese Patent spy and drives the shaping dies that the 2003-40632 communique is disclosed.

With regard to shaping dies of the present invention, can use as the Japanese Patent spy and open the well-known method that 2003-20248, Japanese Patent spy open 2000-95531.

And the thermal property according to the glass of formed thereby also can suitably heat shaping dies.

[the 1st shifting apparatus]

As shown in Figures 7 and 8, the 1st shifting apparatus 500 possesses: rotatable rotary axle 501 and a pair of pivot arm 521,522, this a pair of pivot arm 521,522 is subjected to the supporting of turning axle 501, and extends in the horizontal direction and on mutually opposite direction.Pivot arm 521,522 possesses a pair of absorption handle 503c, the 503d that is positioned at its front end.

The 1st shifting apparatus 500 has makes turning axle 501 liftings, mobile running gear 504,505,506.Running gear 506 is installed on the refrigerating unit 423 by installation component 506a.By making 500 liftings of the 1st shifting apparatus, rotation, can in shaping dies, take out glass molded article and the transfer that has been shaped.

The glass removing method of employed shifting apparatus among the present invention also can be by absorption.

[carrying device]

As shown in Figure 9, carrying device 800 possesses: the supporting plate 862 of accommodating glass molded article E; As the endless belt conveyor 860 of mounting supporting plate 862 and the container running gear that makes it to move, it has 2 conveying belt 864; And the container heating unit 850 that is used to heat supporting plate 862.

Supporting plate 862 for example is formed with 4 concavities from the teeth outwards and forms face 862a, but makes 4 glass molded article E of its mounting.The quantity that concavity forms face can be arbitrarily.

Container heating unit 850 heated separately to these a plurality of supporting plates 862 before glass molded article E transfers load to a plurality of supporting plates 862 from shaping dies 430.Reduce the temperature contrast of supporting plate and glass molded article E therefrom, thereby can get rid of the detrimentally affect that temperature head causes.

In addition, the quantity of container heating unit can be arbitrarily, and heating means can be the heating of fuel such as gas, also can be electric heating.But, also can not produce the material of rough sledding such as distortion even if the material of supporting plate must be the heating that is subjected to this heating unit.

[the 2nd transfer device]

The 2nd shifting apparatus 600 is arranged on the position that is higher than endless belt conveyor 860.It forms the structure that extends perpendicular to the length direction of endless belt conveyor 860.Endless belt conveyor 860 has track 682, from track 682 to the outstanding top board 684 of vertical direction and 4 suction tubes 692 that extend to vertical direction from four corners of top board 684 bottom surfaces.In addition, the 2nd shifting apparatus 600 is also referred to as the glass gob transfer device.

Top board 684 can be along track 682 directly over the endless belt conveyor 860, move to horizontal direction weight selecting device 700 4 weighing devicees 710 directly over.Suction tube 692 forms the structure that can stretch on above-below direction.Suction tube 692 forms and can attract, discharge atmospheric structure, can attract glass molded article E during fixing by attracting atmosphere, and its absorption is kept.On the other hand, can discharge glass molded article E from suction tube 692 by the discharging atmosphere.

The 2nd shifting apparatus 600 takes out glass molded article E from supporting plate 862, and glass molded article E is transferred to weighing device 710 (first transfer mechanism) when utilizing endless belt conveyor 860 that supporting plate 862 is transferred load to transmitting place 864b as specific extracting position.

The 2nd shifting apparatus 600 judges that in 4 weighing display unit 722 weight of glass molded article E is in the certain criteria scope time, is transferred to supporting plate 862 (second transfer mechanism) with glass molded article E from specific weighing location.

In addition, in the 2nd shifting apparatus 600, make the transfer mechanism of winning identical, but also first transfer mechanism and second transfer mechanism can be set respectively with second transfer mechanism.

[weight selecting device]

Weight selecting device 700 has: 4 weighing devicees 710, and the weight for weighing glass molded article E with glass molded article E is converted to electric signal; Weighing display unit group 720 shows glass molded article E is carried out the result of weighing, and judges that it is whether in the certain criteria scope; 4 valve tubes 712 attract the not glass molded article E in standard range, and it is discharged from glass product manufacturing 10; And 4 vacuum pumps 713, be communicated with respectively with described valve tube 712.In addition, omitted its part in the description of valve tube 712.

Weighing device 710 upper surfaces with corresponding position, specific weighing location, be formed with concavity and form face 710a.The glass molded article E that is transferred by the 2nd shifting apparatus 600 is positioned in this concavity and forms on the face 710a.Weighing device 710 is to be positioned in after concavity forms on the face 710a at glass molded article E, weighing glass molded article E, and the electric signal corresponding with the weight of glass molded article E be sent to weighing display unit 722.The transfer path of signal can be wired, also can be wireless.In addition, weighing device 710 is examples of electronics Libra.

Weighing display unit group 720 is contained 4 weighing display unit 722.Weighing display unit 722 has liquid crystal indicator 723, and possesses CPU (Central Processing Unit, central processing unit), ROM (Read OnlyMemory, read-only storage), RAM (Random Access Memory, random access memory) (all not shown) etc.This weighing display unit 722 is according to transmitting the electric signal of coming from weighing device 710, the weight of calculating glass molded article E, and whether the weight of judging this glass molded article E is in the certain criteria scope.That is, weighing display unit 722 works as whether qualified judgement (judgement) mechanism, its judgement (judgement) by the result of 710 weighings of weighing device whether in the certain criteria scope.

Valve tube 712 is that its terminal part 712a is arranged near the weighing device 710 metal system column, and the section of this column is a rectangle, but its material is except that metal, for example also can be plastic cement etc.

Vacuum pump 713 is communicated with valve tube 712 via not shown defective products recoverer.After to vacuum pump 713 supply powers, make valve tube 712 become vacuum state, attract to be positioned in the glass molded article E on the concavity formation face 710a, thereby glass molded article E is recycled to the defective products recoverer.That is, the weight of judging glass molded article E in weighing display unit 722 makes vacuum pump 713 actions not in the certain criteria scope time, attracts glass molded article E and discharges to the outside.In addition, valve tube 712 and vacuum pump 713 are examples of outside output mechanism.

Above glass product manufacturing 10 is made glass molded article E by following manner.

When making glass molded article E, at first, frits such as cullet are fed in the calciner 120 from throw-in part 126.Make heating element 116 heatings by energising, conduct heat to calciner 120 thus, thereby the cullet of calciner 120 and calciner 120 inside is heated.When the temperature of cullet arrived melting point, cullet began fusion, becomes uneven melten glass.

After becoming uneven melten glass, in calciner 120, insert mixing tool 140 in the cullet fusion, carry out convection agitation.During convection agitation, make turning axle 142 rotations, thereby the bubble (deaeration) in the melten glass liquid is removed in 144 rotations of the propeller wing.

After making melten glass produce convection current, be trapped in composition in the partial melting glass owing in convection agitation diffuses to all melten glass, the result can obtain uniform melten glass.

But the uniform melten glass that utilizes convection agitation to obtain can't keep uniform state for a long time.Particularly, in the manufacturing processed of the less glass molded article E of bore, the glass consumption of time per unit is less, so melten glass places the state of fusion for a long time.Its result is, because the proportion difference of the constituent of melten glass, the composition generation part of partial melting glass is separated, and perhaps because the volatilization of the composition of partial melting glass makes that near the composition of the melten glass that molten glass surface is is inhomogeneous, thereby produces striped.

The part that will contain the melten glass of striped is delivered to cut-out teeter column 124.By 122 with the border that cuts off teeter column 124 barrier (not shown) being set in the convection agitation chamber, the melten glass that can prevent to contain striped flows in large quantities and cuts off teeter column 124.Delivering to the melten glass that cuts off teeter column 124 is stirred by cutting off.

Path of navigation 200 is to be subjected to temperature control by the path of navigation control device, makes the temperature of path of navigation 200 along the flow direction of melten glass and step-down.

Particularly, when direct heating, the path of navigation control device is applied to the voltage of the 1st reed plate 251 and the 2nd reed plate 252 by adjusting, controls the temperature of the straight line downtake 210 between the 1st reed plate 251 and the 2nd reed plate 252.The path of navigation control device is applied to the voltage of the 2nd reed plate 252 and the 3rd reed plate 253 by adjusting, controls the temperature of the straight line downtake 210 between the 2nd reed plate 252 and the 3rd reed plate 253.The path of navigation control device is applied to the voltage of the 3rd reed plate 253 and the 4th reed plate 254 by adjusting, controls the temperature of the steering tube 220 between the 3rd reed plate 253 and the 4th reed plate 254.The path of navigation control device is applied to the voltage of the 4th reed plate 254 and aperture reed plate 255 by adjusting, controls the temperature that flowing down pipe 230 between the 4th reed plate 254 and the aperture reed plate 255.When indirect heating, in addition, be subjected to temperature regulation by near the gas burner equitemperature setter that is arranged on the path of navigation.

Then, in cutting off teeter column 124, stir and uniform melten glass, keep its state, directly be sent to glass forming apparatus 400 by path of navigation 200 through cutting off.

Turning axle 425 rotates off and on fixed speed.By the rotation of turning axle 425, make the universal stage 422 that is supported with turning axle 425 rotate.

Be configured in shaping dies 430 rotation by universal stage 422 on the universal stage 422, and to flow down pipe 230 under move.

As shown in figure 10, when melten glass drips to shaping dies 430 from flowing down pipe 230, as shown in figure 11, owing to the pressure of the gas that is sprayed from shaping dies 430, make shaping dies 430 and melten glass C remain contactless state, with this melten glass C that is shaped.

When melten glass dripped to shaping dies 430 in flowing down pipe 230, not shown sensor made universal stage 422 rotations after detecting melten glass C, and the shaping dies 430 that accommodates melten glass C moves along with the rotation of universal stage 422.Along with the rotation of universal stage 422, shaping dies 430 from flow down pipe 230 under under the 1st shifting apparatus 500, move.Make melten glass be configured as curved body during this, form glass molded article E through cooling.

Particularly, the melten glass that is contained in concavity forming face 430a cools off gradually, solidifies and becomes glass molded article E (being also referred to as glass gob, glass block, glass preformed member), and the gas owing to from the pore ejection makes this melten glass swim and is being shaped with the position of concavity forming face 430a contactless state.

And, when temperature in forming process sharply descends, can cause the fragmentation of glass ware forming product E, rough sledding such as damaged.Under described situation, preferably,, utilize this heating unit to heat shaping dies at any part configuration heating unit, make it the temperature that reaches specific.Thereby the temperature that can not cause shaping dies sharply descends, and the result can reduce the fraction defective of glass molded article.

Then, formed glass molded article E is reclaimed by the 1st shifting apparatus 500.

The 1st shifting apparatus 500 possesses absorption handle 503a, 503b, 503c, and 503d, the glass molded article in the 1st shifting apparatus 500 absorption shaping dies, and be that the center rotates with the turning axle, thus glass molded article is transferred load to carrying device 800.

After the 1st shifting apparatus 500 has reclaimed glass molded article E, become empty shaping dies 430 and also can move to the flame irradiation position of burner 450 once more, and utilize burner 450 and heat along with the rotation of universal stage 422.

Accommodate the shaping dies 430 of melten glass by burner 450 heating, make the temperature head of melten glass C and shaping dies 430 reduce, and melten glass C is sharply cooling not, therefore can prevent that the volume of melten glass C from sharply changing, thereby can prevent to produce in the rapid cooled glass of melten glass C be full of cracks.

And, owing to make gas from shaping dies 430 ejections, make shaping dies 430 and melten glass C remain contactless state, make melten glass C rotation on one side, cool off on one side, therefore, shaping dies 430 does not contact with melten glass C, thereby can obtain the glass molded article E at the contactless vestige of the cooled glass surface of melten glass C.

In glass forming apparatus 400, during producing glass molded article E, burn to prevent turning axle 425 in order to cool off turning axle 425, also refrigerating unit 423 can be set.

And,,, also can make the mobile maintenance of universal stage 422 level and smooth even if then turning axle 425 is heated indirectly by burner 450 heating shaping dies 430 as long as have this refrigerating unit 423.

Then, the action with regard to weight selecting device 700 describes.

With the glass molded article E that utilizes the 1st shifting apparatus 500 to be transferred from shaping dies 430, the transmitting place 864a place on the conveying belt 864 of endless belt conveyor 860 is positioned on the supporting plate 862.When supporting plate 862 upload be equipped with 4 glass molded article E after, endless belt conveyor 860 drives not shown motor, thereby makes conveying belt 864 move specified time (specific range), thus with supporting plate 862 conveyances to transmitting place 864b.

To transmitting place 864b, top board 684 parallel moving make the distal portion of 4 suction tubes 692 form the top of face 862a in the concavity of supporting plate 862 with supporting plate 862 conveyances.

Then, utilize suction tube 692 absorption to keep glass molded article E after, top board 684 parallel moving make suction tube 692 be positioned at the top of weighing device 710.Suction tube 692 is discharged glass molded article E, and glass molded article E is positioned in respectively on the concavity formation face 710a of weighing device 710.

Weighing device 710 weighings are positioned in the glass molded article E on the concavity formation face 710a.Weighing device 710 is sent to weighing display unit 722 with the electric signal corresponding with the weight of glass molded article E.Calculate the weighing display unit 722 of the weight of glass molded article E according to this electric signal, judge that be positioned in concavity forms the weight of the glass molded article E on the face 710a whether in the certain criteria scope.Glass molded article outside the standard range is discharged.

After vacuum pump 713 actions, suction tube 692 produces lifting, makes undischarged glass molded article E, that is, the glass molded article E in the standard range is back to supporting plate 862.

Carrying device 800 is transferred to subsequent step with glass molded article behind the supporting plate 862 recovery glass molded article E of institute's conveyance.

Figure 12 represent to be arranged in the example of the present invention (embodiment 1 and 2) in the path of navigation a plurality of measuring point for the temperatures separately temperature and the relation between the mobile distance of melten glass.

Figure 13 represent to be arranged in the example opposite (comparative example 1 and 2) with regulation of the present invention in the path of navigation a plurality of measuring point for the temperatures separately temperature and the relation between the mobile distance of melten glass.

In embodiment 1,2 and comparative example 1,2, the temperature of glass melting groove is 1200 ℃, and the temperature of path of navigation end is identical, is 930 ℃.And, in arbitrary example, all use platinotron as path of navigation, in platinotron, be provided with temperature measuring device from No.1 to No.7 along the flow direction of melten glass.No.1 is positioned at the tight rear side of fusion tank outlet, and No.7 is terminal at pipe, be positioned near the junction surface with the aperture.By the heating that direct heating and/or indirect heating are come control tube, draw the temperature curve of Figure 12 and Figure 13 thus.

In the embodiment 1 of Figure 12, the temperature of path of navigation is dull the reduction along with the flow direction of molten glass flow, and its gradient is also gentle gradually.Described temperature control is ideal example of the present invention.And among the embodiment 2, the temperature of path of navigation only rises a little among the No.6.Utilize in the glass of form manufacturing of embodiment 1 and 2, do not produce arbitrary phenomenons such as bubble, striped, devitrification, thereby be suitable for the shaping of optical element.

On the other hand, in Figure 13, the thermograde of path of navigation becomes big gradually in the comparative example 1.As mentioned above if for a long time in the high temperature current downflow in described path of navigation, then can sneak into a large amount of bubbles in the glass that is obtained.And comparative example 2 is to make its situation about sharply rising after excessively reducing the temperature of path of navigation, at this moment, can produce a large amount of devitrifications in the glass that is obtained, thereby can't be used as opticglass.

And the present invention is defined in described example, and the distortion in the scope of the purpose that attainable cost is invented, improvement etc. are included in the present invention.

Claims (24)

1. glass product manufacturing is characterized in that possessing:

Fusing device has the raw materials melt of making and forms the fusion tank of melten glass and be connected in described fusion tank and make described melten glass effusive path of navigation from described fusion tank;

Flow down device, make that effusive melten glass flows down via described path of navigation;

Glass forming apparatus has a plurality of shaping dies that the described melten glass that flows down is shaped; And

The path of navigation control device carries out temperature control to described path of navigation, makes the temperature of described path of navigation along the flow direction of described melten glass and step-down.

2. glass product manufacturing according to claim 1 is characterized in that, described path of navigation control device possesses:

Thermoswitch is installed in the described path of navigation;

A plurality of temperature measuring devices are measured the temperature of described path of navigation; And

Temperature control device is controlled the heating efficiency of described thermoswitch;

Each of described a plurality of temperature measuring devices is to the temperature information of described temperature control device output with the temperature correlation of described path of navigation,

Described temperature control device is controlled described thermoswitch according to described temperature information, makes the temperature of described path of navigation along described flow direction and step-down,

Described thermoswitch heats described path of navigation according to the control of described temperature control device.

3. according to the glass product manufacturing of claim 1 or 2, it is characterized in that described path of navigation control device possesses:

A plurality of thermoswitchs are installed in the described path of navigation in mode spaced apart from each other;

A plurality of temperature measuring devices are separately positioned between the adjacent thermoswitch, are used to measure the temperature of described path of navigation;

Supply unit is to described thermoswitch outward current; And

The power controling machine structure, control is from the electric current of described supply unit output;

Each of described a plurality of temperature measuring devices is to the temperature information of described power controling machine structure output with the temperature correlation of described path of navigation,

Described power controling machine structure is according to described temperature information, and control is from the current's intensity of described supply unit output, makes the temperature of described path of navigation along described flow direction and step-down,

Described supply unit is according to the control of described power controling machine structure, to the electric current of each output certain strength of described a plurality of thermoswitchs,

Each of described a plurality of thermoswitchs is utilized from the electric current of the certain strength of described supply unit output, and described path of navigation is heated.

4. glass product manufacturing according to claim 1 and 2 is characterized in that, described path of navigation control device possesses:

Thermoswitch is installed in the mode adjacent with described path of navigation;

A plurality of temperature measuring devices are measured the temperature of described path of navigation;

Feedwaies such as fuel are to described thermoswitch fueling and air; And

Temperature control device, fuel and air capacity that control is supplied with from feedwaies such as described fuel;

Described thermoswitch passes through the mode to path of navigation spray flame flow, from the indirect heating path of navigation,

Each of described a plurality of temperature measuring devices is to the temperature control device output temperature information with the temperature correlation of described path of navigation,

Described temperature control device is according to described temperature information, and fuel quantity and air capacity that control is supplied with from feedwaies such as described fuel make the temperature of described path of navigation along described flow direction and step-down,

Feedwaies such as described fuel are according to the control of described temperature control device, and described thermoswitch is supplied with the fuel and the air of specified quantitative,

Each of described a plurality of thermoswitchs makes the fuel combustion of supplying with from feedwaies such as described fuel, thereby heats described path of navigation.

5. glass product manufacturing according to claim 1 is characterized in that possessing carrying device, the glass ware forming product that conveyance is shaped by described a plurality of shaping dies respectively.

6. glass product manufacturing according to claim 5 is characterized in that, possesses the 1st shifting apparatus, and described glass molded article is transferred load to described carrying device one by one from glass forming apparatus.

7. glass product manufacturing according to claim 5 is characterized in that possessing:

Weight selecting device, this weight selecting device have the Weight measurement device of being measured by the weight of the glass molded article of described carrying device conveyance, and sort the selecting device of described glass molded article according to the measurement result of described Weight measurement device; And

The 2nd shifting apparatus, the described glass molded article of transfer between described carrying device and described weight selecting device.

8. glass product manufacturing according to claim 1 is characterized in that described path of navigation is made of the pipe of platinum or platinum alloy system.

9. glass product manufacturing according to claim 1 is characterized in that, described a plurality of shaping dies each in, be formed with the specific continuing surface of accepting described melten glass,

Described continuing surface is made of the porous material with ventilation property,

Each inside at described shaping dies is formed with specific gas supply chamber,

This glass product manufacturing more possesses: the gas feed path that forms continuously with described gas supply chamber and link with this gas feed path and can be to the gas supply source of described gas supply chamber supply gas.

10. glass product manufacturing according to claim 1, it is characterized in that, described path of navigation control device carries out temperature control to described path of navigation, thermograde in the scope till making from the specific position of described path of navigation to the end of downstream side of described path of navigation, with from the upstream-side-end of described path of navigation to the specific position of described path of navigation till scope in thermograde compare comparatively gentle.

11. glass product manufacturing according to claim 10, it is characterized in that, described path of navigation control device carries out temperature control to described path of navigation, makes all temperature of being measured respectively by described a plurality of temperature measuring devices, all is lower than the temperature of described fusion tank.

12. glass product manufacturing according to claim 1, it is characterized in that, described path of navigation control device carries out temperature control, scope naturally cooling till making from the upstream-side-end of described path of navigation to the specific position of described path of navigation, and the thermograde of the scope till making from the specific position of described path of navigation to the end of downstream side of described path of navigation is compared comparatively gentle with the thermograde of naturally cooling.

13. the manufacture method of a glass molded article is characterized in that, comprising:

The fusion step makes the melten glass that is obtained by raw material fusion in fusion tank flow out via path of navigation;

Flow down step, described effusive melten glass is flowed down; And

Forming step is shaped the described melten glass that flows down;

In described fusion step, described path of navigation is subjected to the temperature control of path of navigation control device, makes its temperature along the flow direction of melten glass and step-down.

14. the manufacture method of glass molded article according to claim 13, it is characterized in that, in described fusion step, by being used to measure a plurality of temperature measuring devices of described path of navigation temperature, to the temperature information of described temperature control device output with the temperature correlation of described path of navigation

Described temperature control device is according to described temperature information, and control is installed in the thermoswitch in the described path of navigation, makes the temperature of described path of navigation along described flow direction and step-down,

Described thermoswitch heats described path of navigation according to the control of described temperature control device.

15., it is characterized in that described path of navigation control device possesses according to claim 13 or the 14 described manufacture method of having used the glass molded article of glass product manufacturing:

A plurality of thermoswitchs are installed in the described path of navigation in mode spaced apart from each other;

A plurality of temperature measuring devices are separately positioned between the adjacent thermoswitch, measure the temperature of described path of navigation;

Supply unit is to described thermoswitch outward current; And

The power controling machine structure, control is from the electric current of described supply unit output;

Described a plurality of temperature measuring device is to the temperature information of described power controling machine structure output with the temperature correlation of described path of navigation,

Described power controling machine structure is according to described temperature information, and control is from the current's intensity of described supply unit output, makes the temperature of described path of navigation along described flow direction and step-down,

Described supply unit is according to the control of described power controling machine structure, to the electric current of each output certain strength of described a plurality of thermoswitchs,

Each of described a plurality of thermoswitchs is utilized from the electric current of the certain strength of described supply unit output and is heated described path of navigation.

16., it is characterized in that described path of navigation control device possesses according to claim 13 or the 14 described manufacture method of having used the glass molded article of glass product manufacturing:

Thermoswitch is installed in the mode adjacent with described path of navigation;

A plurality of temperature measuring devices are measured the temperature of described path of navigation;

Feedwaies such as fuel are to described thermoswitch fueling and air; And

Temperature control device, fuel and air capacity that control is supplied with from feedwaies such as described fuel;

Described a plurality of temperature measuring device is to the temperature information of described temperature control device output with the temperature correlation of described path of navigation,

Described temperature control device is according to described temperature information, and fuel quantity and air capacity that control is supplied with from feedwaies such as described fuel make the temperature of described path of navigation along described flow direction and step-down,

Feedwaies such as described fuel are according to the control of described temperature control device, supply with the fuel and the air of specified quantitative to described thermoswitch,

Each of described a plurality of thermoswitchs makes the fuel combustion of supplying with from feedwaies such as described fuel, thereby heats described path of navigation.

17. the manufacture method of glass molded article according to claim 13 is characterized in that, more comprises the conveyance step, the glass molded article that utilizes described carrying device to come conveyance to be shaped by described forming step.

18. the manufacture method of glass molded article according to claim 13 is characterized in that, more comprises the 1st transfer step, utilizes described the 1st shifting apparatus that described glass molded article is transferred load to described carrying device one by one.

19. the manufacture method of glass molded article according to claim 13 is characterized in that, the described path of navigation of described fusion step is made of the pipe of platinum or platinum alloy system,

In each of described a plurality of shaping dies of described forming step, be formed with the specific continuing surface of accepting described melten glass,

Described continuing surface is made of the porous material with ventilation property,

Each inside at described a plurality of shaping dies is formed with specific gas supply chamber,

Further, continuously be formed with the gas feed path, link in this gas feed path that have can be to the gas supply source of described gas supply chamber supply gas with described gas supply chamber,

Be supplied to the gas of described gas supply chamber from described gas supply source, ventilate to described continuing surface side from described gas supply chamber,

Described melten glass is being to be shaped under the non-contacting state by the gas in described continuing surface side ventilation with this continuing surface.

20. the manufacture method of glass molded article according to claim 13 is characterized in that, more comprises:

Weight sorts step, utilizes described weight selecting device to measure and sort the weight of the glass molded article in the described conveyance step; And

The 2nd transfer step is utilized described the 2nd shifting apparatus, between the described weight selecting device that the described carrying device and the described weight of described conveyance step sorts step, and the described glass molded article of transfer.

21. the manufacture method of having used the glass molded article of glass product manufacturing according to claim 13, it is characterized in that, utilize the path of navigation control device that described path of navigation is carried out temperature control, thermograde in the scope till making from the specific position of described path of navigation to the end of downstream side of described path of navigation, with from the upstream-side-end of described path of navigation to the specific position of described path of navigation till scope in thermograde compare comparatively gentle.

22. the manufacture method of glass molded article according to claim 21, it is characterized in that, described path of navigation control device carries out temperature control to described path of navigation, makes all temperature of being measured by described a plurality of temperature measuring devices respectively, all is lower than the temperature of described fusion tank.

23. the manufacture method of having used the glass molded article of glass product manufacturing according to claim 13, it is characterized in that, utilize the path of navigation control device to carry out temperature control, scope naturally cooling till making from the upstream-side-end of described path of navigation to the specific position of described path of navigation, and the thermograde of the scope till making from the specific position of described path of navigation to the end of downstream side of described path of navigation is compared comparatively gentle with the thermograde of naturally cooling.

24. the manufacture method of an optical element is characterized in that, comprises accurate pressing step, will utilize the glass molded article of manufacture method manufacturing of the glass molded article of claim 13 to carry out precise press molding.

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