JP2007323822A - Tube processing device for manufacturing lamp and lamp manufacturing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tube processing device for a lamp manufacturing device in which a heating of a glass tube can be possible while a glass tube is being held and a curvature occurring in a glass tube can be prevented and furthermore its structure is comparatively simple, and provide a lamp manufacturing device. <P>SOLUTION: While a glass tube is held by a holding head, a wall part 30 is arranged around the glass tube 16 alongside a longitudinal direction of the glass tube 16. The wall part 30 has a member having a cross section of a channel shape with an open mouth facing a supporting pillar 9, and is composed of a front wall part 31, a rear wall part 32 and a side wall part 33. The front wall part 31 is arranged in front in a conveying direction (as indicated by an arrow S) of the glass tube 16 and the real wall part 32 is arranged in rear in the conveying direction of the glass tube 16. The side wall part 33 is arranged to combine end parts of the front wall part 31 and the real wall part 32 which are farther from the supporting pillar and is positioned between an external heating means and the glass tube 16. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tube processing apparatus and a lamp manufacturing apparatus for manufacturing a lamp having a fluorescent film typified by a cold cathode lamp and the like, and more particularly to a glass tube heating technique at the time of firing a fluorescent film or discharging an impure gas.

  For example, a cold cathode lamp (CCFL) is used as a light source for a backlight of a liquid crystal display device or the like. Such a lamp is obtained by processing a glass tube. For example, the lamp manufacturing process includes a firing process in which a fluorescent film is formed on the inner wall of the glass tube, and an exhaust process in which the inside of the glass tube is once exhausted and an inert gas is introduced. In these firing process and exhaust process, the glass tube is heated.

Conventionally, as a heating technique for such a glass tube, for example, in a baking process, a glass tube having a fluorescent film formed on the inner surface is inserted into a substantially central portion of a metal pipe held in a substantially horizontal state, and the metal pipe is There is a technique of heating through an electric furnace while rotating (see, for example, Patent Document 1). According to this technique, since the fluorescent tube is baked by being heated by the heat conduction of the metal pipe while the glass tube in the metal pipe is rolling, bending generated in the glass tube can be suppressed.
JP 2001-351517 A

  However, the technique described in the above publication requires a mechanism for rotating the metal pipe, which may complicate the structure of the firing apparatus. Moreover, in the said exhaust process, it is preferable that a glass tube can be heated, exhausting the inside of a glass tube and introduce | transducing an inert gas, and the structure which can heat a glass tube while hold | maintaining a glass tube is desired.

  The present invention has been made in order to solve the above-described problems, and is capable of heating the glass tube while holding the glass tube, suppressing the bending generated in the glass tube, and having a relatively simple structure. An object of the present invention is to provide a tube processing apparatus and a lamp manufacturing apparatus for manufacturing.

  In the following, each means suitable for solving the above-mentioned purpose will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

Means 1. Used to process glass tubes to form lamps,
Holding means for holding at least one end of the glass tube;
Transport means for transporting the glass tube held by the holding means by moving the holding means;
A tube manufacturing apparatus for manufacturing a lamp, comprising heating means arranged along a conveyance path of the glass tube conveyed by the conveyance means,
A wall portion that is moved together with the glass tube by the conveying means, the front wall portion being arranged in front of the conveying direction of the glass tube along the longitudinal direction of the glass tube; A tube processing apparatus for manufacturing a lamp, comprising: a rear wall portion disposed rearward in the conveying direction.

  In the means 1, the wall part moved with the glass tube is provided. In this wall part, the front wall part arrange | positioned ahead of the conveyance direction of a glass tube along the longitudinal direction of a glass tube, and the back arrange | positioned behind the conveyance direction of a glass tube along the longitudinal direction of a glass tube Includes walls and.

  Conventionally, convection occurs in front of the glass tube due to the conveyance of the glass tube, etc., and the front part of the glass tube in the conveyance direction is heated in the temperature rising phase of the glass tube, and the heat is deprived in the temperature decreasing phase, There was a possibility that a temperature difference would occur between the front part and the rear part of the glass tube in the transport direction. In this respect, according to the means 1, it is possible to suppress the excessive temperature increase / decrease in the front portion of the glass tube due to the forward convection caused by conveyance or the like by the front wall portion.

  Moreover, there is a possibility that the rear part of the glass tube is heated more than necessary due to radiation from the rear as it is conveyed along the heating means. In this respect, according to the means 1, radiation from the rear of the glass tube can be suppressed by the rear wall portion, and the rear portion of the glass tube can be prevented from being heated more than necessary due to radiant heat.

  As mentioned above, according to the means 1, the temperature difference which arises by the front part and rear part of the glass tube in a conveyance direction can be suppressed, and the bending which arises in a glass tube can be suppressed. Moreover, since it is not the structure which rotates a glass tube, an apparatus structure becomes a comparatively simple thing. Furthermore, since at least one end of the glass tube is held by the holding means, if the holding means is provided with an exhaust mechanism / gas inflow mechanism, the exhaust in the glass tube and the inert gas can be performed in parallel with the heating of the glass tube. Can be introduced. That is, application to the exhaust process is possible. However, in a configuration in which only one end of the glass tube is held, it is necessary to perform exhaust (in the glass tube) and introduction of an inert gas separately (for example, alternately).

Mean 2. In the tube manufacturing apparatus for manufacturing a lamp described in means 1,
The tube processing apparatus for manufacturing a lamp, wherein the holding means holds both ends of the glass tube.

  According to the means 2, since both ends of the glass tube are held, if one of the holding means is provided with an exhaust mechanism and the other holding means is provided with a gas inflow mechanism, the glass tube is heated in parallel with the heating of the glass tube. The exhaust gas and the inert gas can be introduced at a time.

Means 3. In the tube manufacturing apparatus for manufacturing a lamp according to means 2,
The tube processing apparatus for manufacturing a lamp, wherein the holding means holds the glass tube so that a tube axis of the glass tube is in a substantially horizontal direction.

  According to the means 3, since the glass tube is held so that the tube axis of the glass tube is in a substantially horizontal direction, the apparatus configuration is simplified as compared with the configuration in which the glass tube is held in the vertical direction.

Means 4. In the tube manufacturing apparatus for manufacturing a lamp according to any one of means 1 to 3,
The said wall part is further provided with the side wall part arrange | positioned along the longitudinal direction of a glass tube between the said heating means and the said glass tube, The tube processing apparatus for lamp manufacture characterized by the above-mentioned .

  According to the means 4, since the side wall portion disposed along the longitudinal direction of the glass tube is provided between the heating means and the glass tube, the temperature difference generated in the glass tube in the opposite direction of the heating means is controlled. can do.

  In particular, in the configuration in which the glass tube is held so that the tube axis of the glass tube is substantially horizontal, the glass tube may be bent due to its own weight. At this time, on the assumption that the heating means is provided in the vertical direction of the glass tube, by providing the side wall portion above the glass tube, heating of the upper portion of the glass tube can be suppressed, and due to the weight of the glass tube. Bending can be suppressed.

Means 5. In the tube manufacturing apparatus for manufacturing a lamp according to any one of means 1 to 4,
The tube processing apparatus for manufacturing a lamp, wherein at least the front wall portion of the wall portion has a metal mesh structure or a porous structure.

  According to the means 5, since at least the front wall portion has a metal mesh structure or a porous structure, the air heated by the heating means can pass through the front wall portion, and the front wall portion is allowed to pass through. Heat exchange with the For this reason, it is possible to prevent the glass tube from being heated directly or deprived of heat by convection caused by conveyance or the like. Moreover, by setting it as a mesh structure or a porous structure, the time which the temperature rise and temperature fall of a glass tube can be shortened compared with the case where it is set as the structure without a hole.

  The same effect can be obtained if the rear wall portion and the side wall portion have a metal mesh structure or a porous structure. In this sense, “the wall portion may be a metal mesh structure or a porous structure”. Moreover, if a punching metal is used as an example of a metal porous structure, it is advantageous in that the rigidity of the wall portion can be secured.

Means 6. Used to process glass tubes to form lamps,
Holding means for holding at least one end of the glass tube;
Transport means for transporting the glass tube held by the holding means by moving the holding means;
A tube manufacturing apparatus for manufacturing a lamp, comprising heating means arranged along a conveyance path of the glass tube conveyed by the conveyance means,
A lamp that is moved along with the glass tube by the transporting means, and has a tubular wall disposed around the glass tube along the longitudinal direction of the glass tube. Pipe processing equipment for manufacturing.

  According to the means 6, the same effect as the means 1 is produced. The tubular wall portion here is not only a tube that covers the periphery of the glass tube in a completely closed state, but may be one in which an opening along the longitudinal direction of the glass tube is provided, for example.

Mean 7 In the tube manufacturing apparatus for manufacturing a lamp according to means 6,
The tube processing apparatus for manufacturing a lamp, wherein the tubular wall portion has a metal mesh structure or a porous structure.

  According to the means 7, the same effect as the means 5 is produced.

Means 8. In the tube manufacturing apparatus for manufacturing a lamp according to means 6 or 7,
The tube processing apparatus for manufacturing a lamp, wherein the tubular wall portion has a substantially cylindrical shape in which the distance between the inner wall surface and the glass tube is substantially the same in each portion.

  According to the means 8, the tubular wall portion has a substantially cylindrical shape, and the distance between the inner wall surface and the glass tube is substantially the same in each portion. Therefore, since the tubular wall portion is a kind of heater disposed at an approximately equal distance from the glass tube, in addition to the above effects, the glass tube can be heated more uniformly. As a result, the bending which arises in a glass tube can be suppressed reliably.

  Means 9. A lamp manufacturing apparatus comprising the tube manufacturing apparatus for manufacturing a lamp according to any one of means 1 to 8.

  In the lamp manufacturing apparatus described in the means 9, the same effect as the above-described tube processing apparatus can be obtained.

[First Embodiment]
As shown in FIG. 1, a cold cathode discharge lamp 1 constituting a lamp in this embodiment includes a bulb portion 2 made of a glass tube, and electrode mounts 3 and 4 provided in a sealed state at both ends of the bulb portion 2. It has. A fluorescent film 5 is provided on the inner wall surface of the bulb portion 2, and an inert gas and mercury vapor are sealed inside the bulb portion 2. In the figure, for the sake of convenience, the length of the valve portion 2 is shown to be relatively short, but in actuality it is quite long. For example, the valve portion 2 in the present embodiment is configured to have an outer diameter of about 2 mm to 6 mm, a wall thickness of about 0.2 mm to about 0.5 mm, and a length of about several tens of mm to several hundreds of mm. Yes. Of course, the present invention is not limited to the above numerical range.

  Such a cold cathode discharge lamp 1 is manufactured by a lamp manufacturing apparatus. That is, first, the fluorescent film 5 is formed on a predetermined portion of the inner wall surface of the glass tube. Reduced diameter portions are formed at two locations along the longitudinal direction on one end side of the glass tube on which the fluorescent film 5 is formed. Next, the first electrode mount 3 is inserted into the other end of the glass tube and temporarily fixed. Subsequently, the second electrode mount 4 is inserted from the one end portion, and the second electrode mount 4 is temporarily fixed to the one reduced diameter portion. Further, the mercury alloy member is inserted closer to the end portion than the other reduced diameter portion (the reduced diameter portion located on the one end side). Thereafter, exhaust in the glass tube and introduction of an inert gas are performed. In this state, the sealing is once performed on the end side of the first electrode mount 3 and on the end side of the inserted mercury alloy member. Furthermore, mercury vapor is released into the glass tube by heating. Then, the temporarily fixed first electrode mount 3 and second electrode mount 4 are sealed, respectively, and the end side is separated from both electrode mounts 3 and 4. Thereby, the valve part 2 is formed. Thus, the said cold cathode discharge lamp 1 is obtained through a series of processes. However, the said procedure is an example to the last, and you may manufacture the cold cathode discharge lamp 1 by passing through another procedure.

  Of the various processes described above, the tube processing apparatus 7 unique to the present embodiment is used in the exhaust process of exhausting the glass tube and introducing an inert gas.

  As shown in FIGS. 2 (a) and 2 (b), the tube processing device 7 includes a base portion 8, a turntable 8a supported rotatably with respect to the base portion 8, and the turntable 8a side. A column 9 extending in the substantially horizontal direction as an end side, and a distal end turret 10 and a proximal end turret 11 provided at the distal end and the proximal end of the column 9 are provided.

  The distal-side turret 10 and the proximal-side turret 11 are configured to be able to rotate synchronously by a predetermined angle (for example, 60 degrees in this embodiment) around the axis of the column 9 by the rotation of the turntable 8a by a rotation mechanism (not shown). Has been.

  The distal side turret 10 includes a distal side head 13 for each predetermined angle. The proximal-side turret 11 includes a proximal-side head 14 provided at the predetermined angle so as to face the distal-side head 13, and moving means 15 for moving the proximal-side head 14 in the facing direction. It has.

  The distal end head 13 and the proximal end head 14 hold the glass tube 16 at both ends in the longitudinal direction with the tube axis directed in a substantially horizontal direction. In this sense, the distal side head 13 and the proximal side head 14 constitute a “holding unit”. Further, by rotating the distal end side turret 10 and the proximal end side turret 11, the glass tube 16 held by the distal end side head 13 and the proximal end side head 14 sequentially moves the first to sixth working positions P1 to P6. It can be moved. In this sense, the distal turret 10 and the proximal turret 11 constitute a “conveying means”.

  A gas flow path (not shown) for introducing a flushing gas is connected to each of the tip side heads 13. In this embodiment, argon gas is supplied through this gas flow path. Further, an exhaust passage 23 for sucking and exhausting air in the glass tube 16 is connected to each base end side head 14. The other end side of each exhaust passage 23 is connected to the rotary table 8a, and is connected to a vacuum pump 24 connected to the base portion 8 through a rotary joint (not shown). A vacuum electromagnetic valve (not shown) for opening and closing the flow path is provided in the middle of the exhaust flow path 23.

  A heating means 26 is installed and fixed between the distal turret 10 and the proximal turret 11 in a predetermined range along the movement path of the glass tube 16. In the present embodiment, the predetermined range corresponds to the second to fourth work positions P2 to P4. The heating means 26 is disposed so as to be opposed to each other in the predetermined range, and includes an inner heating means 26 a disposed on the side closer to the support column 9 and an outer heating means 26 b disposed on the side farther from the support column 9. .

  In particular, in the present embodiment, a wall portion 30 is disposed around the glass tube 16 along the longitudinal direction of the glass tube 16. The wall 30 is a U-shaped member having an opening on the side close to the column 9. The wall 30 is supported by the distal end side head 13 and the proximal end side head 14 by a support mechanism (not shown). Therefore, when the distal end turret 10 and the proximal end turret 11 are rotated, the wall portion 30 supported by the distal end side head 13 and the proximal end side head 14 together with the glass tube 16 is in the first to sixth working positions. P1 to P6 can be moved in order.

  Here, the wall 30 will be described. As shown in FIG. 3, the wall portion 30 includes a front wall portion 31, a rear wall portion 32, and a side wall portion 33. The front wall portion 31 is disposed in front of the conveyance direction of the glass tube 16 (the direction indicated by the arrow S in the drawing). The rear wall portion 32 is disposed behind the glass tube 16 in the conveying direction. Moreover, the side wall part 33 is arrange | positioned so that the edge part on the side far from the support | pillar 9 of the front wall part 31 and the back wall part 32 may be connected. Thereby, the side wall part 33 will be located between the outer side heating means 26b and the glass tube 16 in work position P2-P4. In the present embodiment, the front wall portion 31 and the side wall portion 33 have a metal mesh structure. Further, the rear wall portion 32 has a metal porous structure and is made of punching metal. Thus, the rigidity of the wall part 30 is ensured by comprising the rear wall part 32 with a punching metal.

  With the tube processing apparatus 7 configured as described above, first, in the first working position P1 shown in FIG. 2B, the proximal end side head 14 is lowered and the first tube position in the glass tube 16 is changed. 2 is inserted into the tip-side head 13. Then, the proximal end head 14 is raised by operating the moving means 15. Then, the end of the glass tube 16 on the first electrode mount 3 side is inserted into the proximal end head 14. Further, by operating the rotation mechanism, the distal end turret 10 and the proximal end turret 11 are rotated, and the glass tube 16 is moved to the second working position P2.

  Next, during the period from the second work position P2 to the fourth work position P4, the glass tube 16 is flushed by the heating means 26 while the glass tube 16 is heated to about 400 ° C. to 500 ° C. The heating promotes the discharge of moisture, air, and the like in the glass tube 16. At the same time, the inside of the glass tube 16 is depressurized by flushing, and the atmosphere in the glass tube 16 is replaced with flushing gas.

  Here, the flushing will be described. First, the inside of the glass tube 16 is exhausted from the base end side through the exhaust passage 23 by opening the vacuum electromagnetic valve and operating the vacuum pump 24. In parallel with this, a flushing gas is introduced into the glass tube 16 from the front end side through a gas flow path (not shown). As a result, the pressure in the glass tube 16 is gradually reduced, and the air in the glass tube 16 is replaced with the flushing gas.

  After completion of the flushing, the glass tube 16 is moved to the fifth working position P5. The base end side of the first electrode mount 3 position is sealed with a burner. Further, the sealing gas is introduced into the glass tube 16 through the gas flow path. Next, the glass tube 16 is moved to the sixth work position P6. At the sixth working position P6, the mercury alloy inserted into the glass tube 16 by the burner while the proximal end head 14 is detached from the glass tube 16 and held by the chuck by the lowering of the proximal end head 14 by the moving means 15. The tip side is sealed from the member. Then, the glass tube 16 is cut off at this sealing position.

  Thus, the glass tube 16 passes through the first work position P1 to the sixth work position P6 in order, whereby the atmosphere in the glass tube 16 is exhausted, and the sealing gas is introduced into the glass tube 16, and The vicinity of both ends in the longitudinal direction is sealed.

  Next, operations and effects peculiar to the tube processing apparatus 7 of this embodiment will be described.

  Although it has already been described that the glass tube 16 is heated to about 400 ° C. to 500 ° C. by the heating means 26 between the second work position P2 and the fourth work position P4, in this embodiment, the wall 30 is made of glass. By being arranged around the tube 16, it is possible to suppress the bending that occurs in the glass tube 16.

  That is, according to the tube processing apparatus 7 of the present embodiment, when being transported between the heating means 26, the front wall portion 31 disposed in front of the transport direction of the glass tube 16 allows the transport of the glass tube 16 and the like. Due to the forward convection that occurs, the front of the glass tube 16 is not directly heated or deprived of heat. Specifically, since the front wall portion 31 has a mesh structure, heat exchange is performed with the front wall portion 31 when the heated air passes through the front wall portion 31. Thereby, in the temperature rise phase, the heating by the convection of the front part of the glass tube 16 can be suppressed. On the other hand, in the temperature drop phase, the front wall portion 31 functions as a heater, and it can be suppressed that heat is taken away by convection. Moreover, the radiation from the back of the glass tube 16 can be suppressed by the back wall part 32, and it can suppress that the rear part of the glass tube 16 is heated more than necessary by radiant heat. Thereby, it can suppress that a temperature difference arises by the front part and rear part in the conveyance direction of the glass tube 16 (it can heat evenly), and the bending which arises in the glass tube 16 can be suppressed.

  Moreover, according to the tube processing apparatus 7 of this embodiment, the bending by the dead weight of the glass tube 16 can be suppressed by the side wall part 33 arrange | positioned at the outer side heating means 26b side. For example, in the vicinity of the third work position P3 to the fourth work position P4, the outer heating means 26b is located above the inner heating means 26a in the vertical direction. At this time, if the upper portion of the glass tube 16 is heated more than necessary, bending due to its own weight may occur. In this regard, by providing the side wall portion 33 on the outer heating means 26b side, the outer heating means 26b can prevent the upper portion of the glass tube 16 from being heated more than necessary, and the bending caused by the weight of the glass tube 16 can be prevented. Can be suppressed.

  Furthermore, according to the tube processing apparatus 7 of the present embodiment, the front wall portion 31 and the side wall portion 33 have a metal mesh structure, and the rear wall portion 32 is formed of a punching metal (porous structure). Therefore, the time required for the temperature rise and fall of the glass tube 16 can be shortened compared to the case where the structure has no holes.

Moreover, according to the tube processing apparatus 7 of this embodiment, since it is the structure which hold | maintains the glass tube 16 so that the tube axis | shaft of the glass tube 16 may become a substantially horizontal direction, compared with the structure which hold | maintains a glass tube in a perpendicular direction. The device configuration is simplified.
[Second Embodiment]
The second embodiment is mainly different in the structure of the wall portion 30 in the first embodiment. That is, in the above-described embodiment, the tube processing device 7 includes the U-shaped wall portion 30, whereas in the present embodiment, as shown in FIG. Part 40 is provided. Therefore, hereinafter, the wall 40 will be described. In addition, the code | symbol of the said embodiment is diverted suitably.

  The wall portion 40 has a metal mesh structure, is disposed along the longitudinal direction of the glass tube 16, and has a cylindrical shape. And the distance of the inner wall surface 41 and the glass tube 16 is substantially the same in each part. In other words, the glass tube 16 is disposed at the center of the cylindrical wall portion 40.

  Further, the wall 40 is supported by the distal end side head 13 and the proximal end side head 14 by a support mechanism (not shown) like the wall portion 30. Therefore, by rotating the distal end side turret 10 and the proximal end side turret 11, the wall portion 40 supported by the distal end side head 13 and the proximal end side head 14 together with the glass tube 16 is in the first to sixth working positions. P1 to P6 can be moved in order.

  Also by such a wall part 40, the effect similar to the said embodiment is show | played. That is, when being transported between the heating means 26, the front portion of the glass tube 16 is directly heated or deprived of heat by the wall 40 due to forward convection caused by the transport of the glass tube 16 or the like. There is nothing to do. Specifically, heat exchange is performed with the wall 40 when the heated air passes through the wall 40. Thereby, in the temperature rise phase, the heating by the convection of the front part of the glass tube 16 can be suppressed. On the other hand, in the temperature drop phase, the wall 40 functions as a heater, and it is possible to suppress heat from being taken away by convection. Moreover, the radiation from the back of the glass tube 16 can also be suppressed by the wall part 40, and it can suppress that the rear part of the glass tube 16 is heated more than necessary by radiant heat. Thereby, it can suppress that a temperature difference arises by the front part and rear part in the conveyance direction of the glass tube 16, and the bending which arises in the glass tube 16 can be suppressed. Moreover, since the wall part 40 has a metal mesh structure, the time required for raising and lowering the temperature of the glass tube 16 can be shortened compared to the case where the wall part 40 has no hole. Furthermore, since the glass tube 16 is held so that the tube axis of the glass tube 16 is in a substantially horizontal direction, the apparatus configuration is simplified compared to a configuration in which the glass tube is held in the vertical direction.

  In addition, since the distance between the inner wall surface 41 of the wall portion 40 and the glass tube 16 is substantially the same in each portion, the wall portion 40 functions as a kind of heater disposed at an equal distance from the glass tube 16, and glass The tube 16 can be heated more uniformly. As a result, the bending which arises in a glass tube can be suppressed reliably.

  In the embodiment described above, for example, a part of the configuration can be appropriately changed as follows. Of course, implementation in a form not exemplified below is also possible without departing from the spirit of the invention.

  (A) In the said 1st Embodiment, the side wall part 33 was arrange | positioned between the outer side heating means 26b and the glass tube 16 in order to suppress the bending produced by the dead weight of the glass tube 16. FIG.

  On the other hand, if it is necessary to suppress the heating by both the heating means 26a and 26b, a wall portion 50 having a square cross section having side wall portions 53 and 54 on both sides as shown in FIG. It may be adopted.

  Further, if it is necessary to suppress the heating by the inner heating means 26a, a wall portion 60 in which a side wall portion 63 is disposed between the inner heating means 26a and the glass tube 16 as shown in FIG. It may be adopted.

  Furthermore, if it is not necessary to suppress heating in the facing direction of the heating means 26a and 26b, only the front wall portion 71 and the rear wall portion 72 as shown in FIG. 5C are provided, and the side wall portions are not provided. You may employ | adopt the wall part 70 of a cross-sectional Ni character shape.

  In addition, the width | variety of each wall part and the distance with the glass tube 16 are suitably set so that the bending of the glass tube 16 can be suppressed. For example, in the first embodiment, the width of the rear wall portion 32 is larger than the width of the front wall portion 31 in the facing direction of the heating means 26.

  (B) Although the wall part 40 in the said 2nd Embodiment was a structure which covers the circumference | surroundings of the glass tube 16 in the completely closed state, it follows the longitudinal direction of the glass tube 16 as shown to Fig.6 (a). Alternatively, the wall 80 provided with the opening 85 may be adopted. Or you may employ | adopt the wall part 90 which has the door part 96 which can form an opening temporarily as shown in FIG.6 (b). For example, the door part 96 is realizable by making it the structure supported by the wall part 90 with a hinge etc. FIG. Employing these configurations is advantageous in that the glass tube 16 can be easily disposed in the wall portions 80 and 90 and can be easily removed from the wall portions 80 and 90.

  (C) In the above embodiment, the heating means 26 is composed of the inner heating means 26 a and the outer heating means 26 b, and the inner heating means 26 a and the outer heating means 26 b are arranged opposite to each other in parallel with the tube axis of the glass tube 16. It had been.

  On the other hand, one of the inner heating means 26a and the outer heating means 26b may be omitted. Further, the heating surface of the heating means 26 (the inner heating means 26a and the outer heating means 26b) may form an angle with respect to the tube axis of the glass tube 16.

  (D) In the above embodiment, exhaust is performed while introducing the flushing gas, but it is not always necessary. For example, after exhausting first, the flushing gas may be introduced next, and then exhausting and introduction of the flushing gas may be alternately repeated. Further, for example, a flushing gas may be introduced first.

  (E) A sealing gas may be used instead of the flushing gas. Further, the sealing gas may be omitted.

  (F) Although the said embodiment was in an exhaust process, this invention can also be applied to the baking apparatus in a baking process.

It is a fragmentary sectional view which shows the structure of a cold cathode discharge lamp. It is a figure for demonstrating the pipe | tube processing apparatus in embodiment, Comprising: (a) is a schematic block diagram, (b) is a plane schematic diagram of (a) which shows a working position. It is explanatory drawing which shows the cross section of the wall part of 1st Embodiment. It is explanatory drawing which shows the cross section of the wall part of 2nd Embodiment. It is explanatory drawing which shows the modification of the wall part in 1st Embodiment. It is explanatory drawing which shows the modification of the wall part in 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cold cathode discharge lamp, 2 ... Valve | bulb part, 3, 4 ... Electrode mount, 5 ... Fluorescent film, 7 ... Tube processing apparatus, 10 ... Front end side turret, 11 ... Base end side turret, 13 ... Front end side head, 14 ... proximal end head, 16 ... glass tube, 26 ... heating means, 26a ... inner heating means, 26b ... outer heating means, 30, 40, 50, 60, 70, 80, 90 ... wall, 31, 71 ... forward Wall part, 32, 72 ... Back wall part, 33, 53, 54, 63 ... Side wall part, 41 ... Inner wall surface, 85 ... Opening, 96 ... Door part, S ... Transport direction.

Claims (9)

Used to process glass tubes to form lamps,
Holding means for holding at least one end of the glass tube;
Transport means for transporting the glass tube held by the holding means by moving the holding means;
A tube manufacturing apparatus for manufacturing a lamp, comprising heating means arranged along a conveyance path of the glass tube conveyed by the conveyance means,
A wall portion that is moved together with the glass tube by the conveying means, the front wall portion being arranged in front of the conveying direction of the glass tube along the longitudinal direction of the glass tube; A tube processing apparatus for manufacturing a lamp, comprising: a rear wall portion disposed rearward in the conveying direction. The tube processing apparatus for manufacturing a lamp according to claim 1,
The tube processing apparatus for manufacturing a lamp, wherein the holding means holds both ends of the glass tube. The tube processing apparatus for manufacturing a lamp according to claim 2,
The tube processing apparatus for manufacturing a lamp, wherein the holding means holds the glass tube so that a tube axis of the glass tube is in a substantially horizontal direction. The tube manufacturing apparatus for manufacturing a lamp according to any one of claims 1 to 3,
The said wall part is further provided with the side wall part arrange | positioned along the longitudinal direction of a glass tube between the said heating means and the said glass tube, The tube processing apparatus for lamp manufacture characterized by the above-mentioned . The tube processing apparatus for manufacturing a lamp according to any one of claims 1 to 4,
The tube processing apparatus for manufacturing a lamp, wherein at least the front wall portion of the wall portion has a metal mesh structure or a porous structure. Used to process glass tubes to form lamps,
Holding means for holding at least one end of the glass tube;
Transport means for transporting the glass tube held by the holding means by moving the holding means;
A tube manufacturing apparatus for manufacturing a lamp, comprising heating means arranged along a conveyance path of the glass tube conveyed by the conveyance means,
A lamp that is moved along with the glass tube by the transporting means, and has a tubular wall disposed around the glass tube along the longitudinal direction of the glass tube. Pipe processing equipment for manufacturing. The tube processing apparatus for manufacturing a lamp according to claim 6,
The tube processing apparatus for manufacturing a lamp, wherein the tubular wall portion has a metal mesh structure or a porous structure. The tube processing apparatus for manufacturing a lamp according to claim 6 or 7,
The tube processing apparatus for manufacturing a lamp, wherein the tubular wall portion has a substantially cylindrical shape in which the distance between the inner wall surface and the glass tube is substantially the same in each portion. A lamp manufacturing apparatus comprising the tube manufacturing apparatus for manufacturing a lamp according to any one of claims 1 to 8.

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