KR100211145B1 - The formation method and device of double spiral circular type tube for bulb type fluorescence lamp - Google Patents

Abstract

The present invention relates to a bending method and a bending device of a curved tube for a fluorescent lamp.

Among fluorescent lamps for bulb type fluorescent lamps, curved fluorescent lamps such as coil and cylindrical lamps are generally manufactured by winding glass tubes that are appropriately preheated to annular, cylindrical and spiral bending molds whose curved shapes are engraved. The double helix curved tube for the manufacture of spiral curved fluorescent lamps is not simple in shape and cannot be molded by a general bending method and apparatus. Therefore, a new double spiral spiral tube bending method and apparatus were required.

The present invention provides a left and right bending mold having a pair of double helix members formed in a cylinder with a double helix semicircular groove in the form of an inner circumferential surface of a predetermined double helix curved tube to be bent, and a preheated glass tube is mechanically moved from a preheating device to be gripped. A glass tube holding device, a movement of the bending mold, a rotating device, and a device for compensating the formed tube tube, wherein the bending molds are spread from side to side on the same horizontal line and preheated by a glass tube holding device in the middle. After the middle part is placed in a water line, both molds are connected to each other, and the middle part of the glass tube is held in the connecting part. Then, both ends of the glass tube are continuously doubled by the glass tube gripping device while rotating the left and right molds at the same time in the spiral winding direction. Double-held curved tube type that holds both sides of the glass tube on one side of the double helix while holding it with the spiral winding axis After bending by the tube, molding correction of the pipe section by the molding correction device, and then by reversing and separating one side mold, rotating the double-sided spiral member in the reverse direction and at the same time reverse the bent tube double spiral Bending the tubular tube to provide a method and apparatus for bending a double spiral curved tube for a fluorescent lamp, which is capable of mechanizing and automating a bending device and improving the bending performance and uniformity of mass productivity and quality. There is a characteristic.

Description

Forming method and apparatus of double helix curved tube for bulb fluorescent lamp

1 is a perspective view of an example double helix curved tube bent and molded according to the present invention.

2 is a front view of the example double helix curved tube of FIG.

3 is a plan view of the example double helix curved tube of FIG.

4 is a configuration diagram of a fluorescent lamp fixture using a double spiral curved fluorescent lamp of an example.

5 is a perspective view of a double spiral curved fluorescent lamp of another example.

6 is a front configuration diagram of a double helix curved fluorescent lamp of the fifth embodiment.

7 is a bottom view of the double helix curved fluorescent lamp of FIG.

8 is a plan view of a double helix mold for bending a double helix curved tube according to the present invention;

9 is an enlarged cross-sectional view of a double spiral mold coupling means structure shown in FIG.

10 is a front view of a glass tube gripping state according to the configuration of FIG. 8.

11 is a block diagram of an example of a double helix mold heating apparatus according to the present invention.

Figure 12 is an embodiment of the present invention double spiral curved tube automatic forming device assembly.

FIG. 13 is a cross sectional view taken along line A-A in FIG.

FIG. 14 is a partial configuration view of a mold rotating apparatus viewed along the line B-B in the configuration of FIG.

FIG. 15 is a cross-sectional view illustrating a storage structure of one of the double helix members in the configuration of FIG. 12. FIG.

FIG. 16 is a cross-sectional view illustrating a lower transmission structure of one mold rotating apparatus of FIG.

Figure 17 (a) is a block diagram of an embodiment of a molding cross-section correction device of the automatic molding apparatus according to the present invention.

(b) is an operating state diagram of the configuration of (a).

18 is a glass tube supply process of the molding process by an embodiment of the present invention automatic molding apparatus.

19 is a glass tube gripping process diagram of the molding process by an embodiment of the present invention automatic molding apparatus.

20 is an initial state of bending molding during the molding process by one embodiment of the present invention.

Figure 21 is an embodiment of the double spiral bending completion and molding correction process of the molding process by an automatic molding apparatus of an embodiment of the present invention.

Figure 22 is a glass tube wave-type release state for separating the double helix curved tube formed in the double helix mold during the molding process by one embodiment of the present invention.

Figure 23 is a state in which the double helix curved tube formed during the molding process by an embodiment of the present invention automatically separated from the double helix mold.

* Explanation of symbols for main parts of the drawings

10: double spiral curved tube of an example 10a: double spiral curved fluorescent lamp

10b: other example double spiral curved fluorescent lamp 11: top

12,13: left and right helix tube 12a, 13a: left and right helix tube end

15: discharge electrode 16, 17: introduction tube

16a, 17a: introduction tube of another example

30: Bulb-type fluorescent lamp using an example of double spiral curved fluorescent lamp

111, 101: left and right double helix members 112, 102: left and right rotating shafts

113,103: vertical end of left and right double helix member 104: connection groove

114: connection protrusion 115: support groove

109: double helix semicircular groove 211, 201: left and right slider

212, 202: mold support member 215, 205: pneumatic cylinder

216,206: working rod 207: bearing

208: horizontal support 209: guide

217: lower bearing member 301, 311: upper and lower holding grip

312: rubber stopper 300: molding correction device

321: working rod 322: air nozzle

323: pneumatic cylinder 324: air supply pipe

325: support 402, 401: left and right bracket

403: spline drive shaft 404: drive motor

415, 405: Lower left and right timing belt 416, 406: Upper left and right timing gear

417, 407: left and right timing gear 418: bearing

510, 500: left and right helix heating device 511,501: left and right heater

512, 502: left and right heating table

513, 503: Supports for left and right helix heating devices

700: glass tube preheater GT: glass tube

GTa: Upper end of our tube GTb: Lower end of glass tube

P1: bending direction arrow

The present invention relates to a method for forming a curved tube used for manufacturing a curved fluorescent lamp for bulb fluorescent lamps, and a molding apparatus for use in the molding method.

Bulb-type fluorescent lamps have a voltage circuit built into a small enclosure with a soke base on the top for connection to incandescent lamps. Fluorescent lamps have the same configuration as straight fluorescent lamps, but with a long straight line In the tubular form, the tubular tube is used to deform and miniaturize it into a curved tube like U-shaped, coil-shaped, and cylindrical.

In manufacturing the fluorescent lamps for the bulb-type fluorescent lamps, the coil-shaped or cylindrical lamp should be bent (rolled) into a curved tube such as a coiled or cylindrical tube. Bending molding is very difficult compared to the tube.

The general curved fluorescent lamp Pyongyang tube was manufactured by winding the glass tube appropriately preheated to the annular or cylindrical bending mold whose curved shape is engraved on the outer circumference or the outer circumferential surface of the curved tube. One example of the one is formed of a spiral coiled curved tube, an example of a method and apparatus for manufacturing a spiral coiled curved tube is a 'forming device of fluorescent lamps' published in Korean Utility Model Publication No. 94-6921 It is described in the invention (hereinafter referred to as line design).

The main structure of the bulb-type coil curved tube fluorescent lamp forming apparatus described in the above-mentioned design is a semi-circular screw having the same shape as the inner semicircle portion of the coil-shaped curved tube to which a handle that can be manually rotated is attached to one side and molded on the outer circumferential surface thereof. Cylindrical bending mold (bending part) having a coiled spiral part formed with a groove, a heating part for heating the spiral part by installing a plurality of torch under the spiral part of the bending mold, and a coiled glass tube bent in the bending mold. It is provided with a correction unit for correcting the interval of both ends leg (introduction pipe),

The other end of the glass tube is held by the other hand while the fixed bending mold is preheated by the torch of the heating part, while holding one end of the straight glass tube preheated by the preheating part with one hand and fixing it to one side of the coil spiral part of the bending mold. After winding several times manually along the groove of the spiral section and bending it into a coiled curved tube, when the bent glass tube cools to some extent and the shape is hardened, the coiled curved tube is removed from the nose line and connected integrally with the bending mold. 수동 After turning the handle manually to separate the coiled curved tube wound on the coil spiral part, move the separated coiled curved tube to the compensator to adjust the gap between both legs at regular intervals, correct it, and then cool it completely. It can be seen that manufacturing.

The method and apparatus for manufacturing a single-coil spiral curved tube of such a wire design is formed by coiling a glass tube by winding a glass tube on a spiral part while the bending mold is fixed, so that the shape of the curved curved tube is There is a disadvantage that it takes a lot of processes, equipment and workmanship, such as the need to provide a separate correction device and process according to this, the distance between the ends of each side formed by the introduction pipe must be a certain standard,

The heating part which eb-heats the bending mold is a structure in which a plurality of torches using gas are installed on the lower side of the spiral part, so that the temperature of the spiral part of the heated bending mold is unbalanced in the circumferential shape. Partial variation in elongation occurs in length, resulting in uneven thickness of the formed glass tube, partial length increase, reducing the glass tube cross-sectional area, or only one side, severely distorting the cross-sectional phenomenon. Quality control was difficult, inefficient, and impossible to automate.

In addition to these drawbacks, the curved pipe shape that can be molded by the manufacturing apparatus and method described in the above-described design is only a bending molding of a single-coil spiral-shaped curved pipe, and the example shown in FIGS. There are many problems in bending molding the double helix curved tube 10 of one example, as shown in Figs. 1-3, which are used to manufacture the double helix curved fluorescent lamps 10a.

As shown in the figure of the double helix curved tube 10, a glass tube with a small diameter is split left and right at the top portion 11, and the double helix is wound in a predetermined number of turns with a short spiral diameter and a pitch of right and left helix tubes 12 (13), the ends of each of the left and right helix tube 12, 13 is a configuration formed by the left and right helix tube end portions (12a) (13a) extending to a predetermined length branch line at the same angle as the helix angle,

Using the configuration of the bending mold described in the conventional line design, the shape of the helix is simply changed from one line helix to two main helix (double helix), and the glass tube is double-handed by hand in the two helix. In the winding method, the double spiral curved tube 10 of the normal shape as illustrated in FIGS. 1 to 3 could hardly be bent.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for forming a double helix curved tube for manufacturing a double helix curved fluorescent lamp used in a fluorescent lamp and a double helix mold or an automatic molding apparatus for performing the molding method.

The double helix curved tube forming method of the present invention for achieving the above object, the left and right double helix members having a predetermined length in the cylinder is a double helix semicircular groove of the same shape as the inner peripheral surface of the predetermined double helix curved tube to be bent Each of the left and right double helix members are moved and controlled so as to face each other on a central axis with a certain distance from each other or vertical ends of the formed opposite sides are in contact with each other, each of the left and right double helix The spiral members use a pair of bending molds that are rotated in both forward and reverse directions at any position that is moved,

The double-sided double-held member that is opened in a state where the upper and lower ends are gripped and positioned in a waterline by a glass tube gripping device supported by a multi-axis robot capable of controlling movement in multiple directions by blocking the lower end with a stopper. After the middle of the glass tube is moved to be positioned in the waterline in the connection space of the field,

The left and right double helix members are moved to the center side to be connected on the same rotation axis, respectively, so that the middle part of the glass tube is fitted in the vertical end portion of one double helix member so as to be pressed to the center of the vertical end portion of the other double helix member by some pressing force. After connecting

The remaining portion of the glass tube supported on the connection part of both double helix members connected on the same rotation axis is rotated so that the double helix member is wound a certain number of times with double helix, and the length is gradually reduced as it is wound on one double helix member. Bending a double spiral curved tube while controlling the glass tube gripping device to continuously grip the upper and lower ends of the glass tube being moved along the double spiral winding axis in the axial direction, so that the glass tube gripping device continuously grips the double spiral axis. After molding

Subsequently, by injecting the air of proper pressure from the upper end of the bent double helix curved tube to the inside of the tube, the elliptical deformed pipe section is restored and corrected in a circular shape as a whole.

The other side of the double helix member, which is connected under pressure by inserting the top of the formed double helix curved tube from the outside, is separated by reversing backwards,

Subsequently, the bending double-helical member is reversely rotated in the opposite direction to the bending winding, and at the same time, the upper and lower ends of the bent double-helical curved tube are held in the opposite direction of the winding direction while the upper and lower ends of the bent double-held curved tube are gripped by the glass tube gripping device. By controlling the movement, the process of separating the bent double helix curved tube from the bending mold is characterized in that the bending of the predetermined double helix curved tube.

Because glass tubes are low in ductility, they must be sufficiently preheated to wind a straight glass tube into a double spiral curved tube with a short diameter (about 4-5 cm) as illustrated. However, if preheated to have a suitable ductility for winding a straight glass tube, it may be partially stretched when positioned in a state other than the waterline.

Therefore, for bending molding work, it is necessary to take out the preheating device and move it to the bending mold side as well as to hold the preheated glass tubes so that they are not stretched or stretched during the double spiral winding. It is bent along the double helix semicircular groove of the spirally wound and can be bent into a double helix curved tube of a certain type without the defect of the double helix shape is partially distorted or sag.

According to the molding method of the present invention, a bending mold while precisely controlling the position of the glass tube mechanically by the glass tube gripping apparatus supported by the multi-axis robot which is automatically controlled to a preset position according to the bending trajectory of the glass tube to be bent. By mechanically rotating the bending winding process, the glass tube is properly adhered to the double helix semicircular groove of the double helix member to be rotated to bend the double helix curved tube of the normal form.

In addition, in performing the molding method, if the bending molding is performed while heating the double-helical member of the bending mold to a predetermined temperature capable of maintaining the temperature of the preheated glass tube, productivity and product quality may be further improved.

When the preheated glass tube is wound around a double-stranded member made of metal in a state exposed to a relatively low ambient temperature atmosphere for a short time, it is naturally exposed to the inner circumferential surface, which is the contact surface of the double-stranded member, and to the atmosphere when the coil is wound up. If the temperature of the outer circumferential surface is lowered and a temperature deviation occurs in the glass tube, the defective rate may be increased during double-held molding.

Therefore, on the double helix member side of the bending mold, an external heater device that can be heated in a cylindrical shape with a certain distance from the outer circumferential surface, or a built-in heater device that is integrated into the double helix member is installed to reduce the outer circumferential surface temperature of the double helix members. In parallel with the process of controlling electrically to the required temperature according to the working process, when the preheated linear glass tube is wound around the double spiral member and bent, the overall uniformity of the ductility is maintained without uniform decrease in the preheated temperature. Spiral winding can prevent bending factors such as tube distortion, thickness unevenness, and double helix deformation due to uneven temperature distribution, thereby increasing the bending speed.

As described above, according to the molding method of the present invention, a linear glass tube annealed to have a proper ductility for bending molding is mechanically drawn out of a preheating device to enable bending of a double spiral curved tube, and the like. While the various processes required for bending molding are carried out in a stepwise and organically easy mechanical control device, each of these mechanical devices can be configured as a single united molding device so as to make a double spiral curved tube. It is possible to automate the whole bending molding process of a single molding machine in a batch and continuously, and to significantly increase the productivity and quality control in the bending molding work of a double spiral bent tube.

In performing the double spiral curved tube bending molding method of the present invention described above, it can be effectively performed by the following double spiral mold or automatic molding apparatus.

The structure of the double helix mold of the double helix curved tube is that the double helix semicircular groove of the same shape as the inner circumferential surface of the double helix curved tube to be bent is joined on the same central axis along the double helix with a certain length engraved on the outer circumferential surface of the round bar. Formed into two members separated by left and right by means, the left and right double helix member having a support groove for fitting the preheated glass tube in the direction orthogonal to the central axis of the double helix member on the coupling end side of the double helix member; Is formed.

The left and right double helix members may be used as a double helix mold independently in a manual molding apparatus, or may be used in combination with an automatic molding apparatus, but in combination with an automatic molding apparatus, forming a double spiral curved tube may increase productivity. .

Automatic molding device of double helix curved tube includes components such as mold support device, mold moving device, glass tube gripping device, molding correction device, mold rotating device, etc., including left and right double helix members which are double helix curved tube molds. It is composed.

The mold support device comprises left and right mold support members which pivotally support the double helix molds composed of the left and right double helix members at a predetermined height on the same center axis, pivotally on the pedestal, respectively, and the left and right mold supports. The left and right sliders freely support the members on the horizontal support from side to side.

The mold moving device is formed as a pair of left and right having a moving device for horizontally controlling the left and right double helix members independently at both sides at regular intervals or connected to the central part side.

The glass tube gripping device independently grasps the upper and lower ends of the glass preheated from the preheater and draws them out in a water line, and moves them to the connection position between the left and right double helix members. Therefore, the upper and lower ends of the glass tube are continuously held on the double helix axis, and when the bent double helix curved tube is separated from the double helix member, the upper and lower ends of the glass tube are bent to the vertical end side of the wound double helix member at the bending end position. Corresponding to the horizontal axis is installed in a multi-axis robot that is controlled in a multi-directional position is composed of a clamp-type upper and lower wave districts that are independently controlled.

The molding compensator is composed of a pneumatic cylinder integrally attached to the upper gripping hole of the glass tube gripping apparatus and an air nozzle that is pushed into the upper end of the glass tube by the pneumatic cylinder, and at the top of the glass tube whose bottom is blocked after the bending molding process. The air nozzle is inserted into the inside of the tube to inject air at a constant pressure, and the bending is performed to restore the cross section of the organic tube twisted into an elliptical shape to a circular section.

The mold rotating device is configured to have a driving means and a driving force transmission means for simultaneously rotating the left and right double helix members in both forward and reverse directions at any position.

According to the configuration of the double-helical mold and the automatic molding apparatus, it is stepwise and organic to carry out the various steps of the molding method proposed to bend the linear glass tube preheated to the double-held curved tube to have a proper ductility for bending molding. Consists of a molding apparatus that can perform bending of a double helix curved tube, as well as each of these devices can be configured as a unitized molding apparatus, thereby bending a double helix curved tube It is possible to increase the quality of productivity and quality control in the bending molding work of the double helix curved tube by configuring the molding process as an automatic device that can be collectively and continuously performed in one molding machine.

In performing the bending molding operation by the molding apparatus of the present invention having the above characteristics, the above-described molding method is improved, and the mold heating apparatus for performing the heating process of the double-helical member, which has been proposed, is added to further improve productivity and product quality. You can.

The mold heating apparatus may be configured as an external heater device that can be wrapped in a cylindrical shape with a predetermined interval on the outer circumferential surface of the left and right double helix members, or a built-in heater device that is integrated into the double helix member. In this configuration, the heaters are wound around the glass tube in the double spiral member, whereas the heating device provided with a plurality of torch under the coil spiral part of the conventional bending mold concentrates on a part of the coil spiral part and heats only locally. The outer circumferential surface can be uniformly heated over a sufficient length, can be electrically controlled easily, and can be finely controlled at a predetermined temperature according to the working process, thereby further enhancing the temperature correction effect of the glass tube, Simplify configuration and facilitate maintenance checks that have a large impact on productivity and work efficiency The advantage would that.

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

1 is a perspective view of an example of a double helix curved tube 10 that is to be bent and molded according to the present invention, and FIG. 2 is a front view of a double helix curved tube 10, and FIG. 3 is a double helix curved tube 10. FIG. 4 is a plan view of an exemplary fluorescent lamp fixture 30 using a double helix curved fluorescent lamp 10a made of the double helix curved tube 10.

As shown in the figure, the shape of an example double helix curved tube 10 is generally a thin glass tube having a diameter of about 12-15 mm from the top portion 11 to the left and right helix tubes 12 and 13 so as to be symmetrical in both directions. It is divided and formed by the spiral spiral ends (12a) and (13a) of straight spirals wound at a constant number of windings with a short spiral diameter and an appropriate pitch, and inclined at a predetermined length at the same angle as the spiral angle on both ends of the double spiral winding. .

As shown in FIG. 4, the double helix curved tube 10 having such a configuration bends the helix tube ends 12a and 13a, which are the end portions of the spiral windings of the left and right helix tubes 12 and 13, as shown in FIG. After cutting to a predetermined length to form two introduction tubes (16, 17), and the discharge electrodes 15 are embedded therein to produce a double helix curved fluorescent lamp 10a, such a double The spiral curved fluorescent lamp 10a is used in the known fluorescent lamp fixture 30 of one example.

5 is a perspective view of a double helix curved fluorescent lamp 10b according to another embodiment, and FIGS. 6 to 7 show front and bottom views of the double helix curved fluorescent lamp 10b. The shape of the double spiral curved tube 10 of the above example increases the number of windings by about one time and cuts left and right helix tubes 12 and 13 at the end of the spiral portion, respectively, and discharge electrodes 15 therein. It is a configuration characterized in that the two introduction pipes (16a, 17a) are positioned opposite each other on the double helix axis by sealing the built-in.

8 below shows an example configuration and molding operation state of the double-held mold of the present invention and the automatic molding apparatus using the mold for bending the double-held curved tube 10 of the example as described above. It is.

As shown in FIGS. 8-10, the double helix mold has a double helix semicircular groove 109 having the same shape as that of the inner circumferential surface of the double helix curved tube 10 to be bent. It is formed of a left and right double helix members 111 and 101 having a predetermined length is engraved and separated to the left or right on the same central axis, or having a coupling means coupled to one.

The left and right double helix members 111 and 101 are formed with vertical end portions 113 and 103 as inner end portions of respective coupling portions, and two connecting grooves 104 are formed in one vertical end portion 103 as a coupling means. In addition, the other vertical end portion 113 is provided with connection protrusions 114 fitted into the two connection grooves 104 so that they are always connected only at positions where both spiral angles coincide at the same rotation angle.

As shown in FIG. 10 by the coupling means, the left and right double helix members 111 and 101 are closely connected to each other by the connecting groove 104 and the connecting protrusions 114 of the vertical end portions 113 and 103. When the abutment is connected to the same central axis line, the double helix semicircular grooves 109 engraved in the left and right double helix members 111 and 101 are continuously connected to the vertical end portions 113 and 103 which are the connecting portions, thereby forming a single double. It is a configuration formed in the form of a spiral member.

On the other hand, in the vertical end 113 of the left double helix member 111, as shown in FIGS. 8-10 and the like, the support groove 115 of the shape surrounding the outer surface of the glass tube GT to be bent is perpendicular to the center axis. It is formed in the direction.

The support groove 115 sandwiches the middle portion of the glass tube GT, which is supplied in a straight line during the bending molding operation, and slightly presses the glass tube GT to the left and right double helix while slightly pressing the vertical end 103 of the right double helix member 101. It is a structure which supports in the direction orthogonal to the center axis line of the members 111 and 101. FIG.

As described above, the double helix mold is composed of two left and right, and the two left and right double helix members 111 and 101 are formed in a structure in which they are connected at the center, and the other vertical end portion 103 is sandwiched by the middle part of the glass tube GT. To form a support groove 115, which is pressed slightly to the side, on the vertical end 113 of the left double helix member 111, which is the opposite side of the right double helix member 101 on which the glass tube is bent, is bent to form a straight line. Winding the glass tube (GT) in the double helix semicircular groove (109) of the right double helix member 101 is molded into a double helix curved tube (10), and then the molded double helix curved tube (10) is a double helix semicircular groove At the time of separation at 109, the left double helix member 111 which presses the top 11 of the formed double helix curved tube 10 is separated by reversing in the horizontal axis direction, and the bending right double helix member. (101) is molded and wound on the double helix semi-circle (109) Double spiral track tubular tube 10 in which is fixed the reverse operation in the reverse rotation free by the configuration that is considered to automatically remove the double spiral track tubular tube 10.

The configuration of an example of an automatic molding machine for automatically bending the double spiral curved tube 10 using the double spiral mold having the above configuration is shown in FIGS. 12-23 and the like.

Automatic molding device of double helix curved tube consists of components such as mold supporting device, mold moving device, glass tube gripping device, molding compensator, mold rotating device, etc. do.

The structure of the mold supporting apparatus includes left and right rotating shafts 112 and 102 and the left and right rotating shafts 112 which are assembled and fixed to the outer ends of the left and right double helix members 101 as shown in FIGS. 12-15 and the like. ), The left and right mold support members 212 and 202 for freely pivoting the bearings 207 pivotally at the upper left and right sides of the bearing 207, and the left and right mold support members 212 and 202 at the upper end thereof. The left and right sliders 211 and 201 are fixedly supported and are installed freely only in the left and right directions by the two guides 209 on the upper surface of the horizontal support 208.

According to the structure of the mold support device, as shown in FIG. 12, the left and right double helix members 111 and 101 are supported at the inner ends of the left and right mold support members 212 and 202 so that some distance therebetween. It is supported to be held in a straight line or combined in a straight line.

The mold moving device is configured to spread the left and right double helix members 111 and 101 to both sides at regular intervals or to the center part side.

The left and right sliders 211 and 201 which are fixed to protrude in the longitudinal direction from the front and rear of the upper and lower surfaces of the horizontal support 208 supporting the entire molding apparatus to fix the left and right mold support members 212 and 202 in the left and right direction only. Two guides 209 for freely guiding and the outer circumferential surface thereof are fixed by bearings 418 and lower ends of the left and right mold support members 212 and 202, respectively, and the inner circumferential surface of the spline driving side 403 which will be described later. Mold support members 212 and 202 at the center side front and rear of the horizontal support 208 so as to control the horizontal movement of the lower bearing member 217 and the left and right mold support members 212 and 202 horizontally to the left and right splines It consists of two pneumatic cylinders (215, 205) installed between the bottom of the.

The pneumatic cylinders (215, 205) the mold support members (212, 202) so that the left and right double helix members (111, 101) are separated by some distance on the same horizontal axis or connected in a straight line at the center portion As shown in FIGS. 12 and 13, the fixed ends of the pneumatic cylinders 215 and 205 are respectively fixed at the front and rear of the central portion of the horizontal support 208, as shown in FIGS. 12 and 13, respectively. The working rods 216 and 206 are fixed to the inner ends of the left and right sliders 211 and 201 to which the lower ends of the respective mold supporting members 212 and 202 are fixed, and these pneumatic cylinders 215 ( Although not shown in the drawing, the 205 is connected to a separate pneumatic circuit and is configured to operate independently of each other by the main control device at a predetermined operation point.

The configuration of the glass tube gripping apparatus is fixed to the hangers (not shown in the figure) of the multi-axis robot as shown in FIGS. 10 and 17, respectively, and the strokes are independently controlled, respectively, the upper and lower ends of the glass tubes GT preheated from the preheater. It is composed of tongs-type upper and lower end holding spheres 301 and 311 having a configuration of gripping and withdrawing.

In the multi-axis robot fixing the tong-type upper and lower end grippers 301 and 311, the upper and lower end grippers 301 and 311 independently of the upper and lower ends of the glass tube GT preheated from the preheater as shown in FIG. The stroke which can be grabbed and drawn out in the waterline, and the drawn glass tube GT in the vertical end support groove 115 of one double helix member 111 in a state where the left and right double helix members 111 and 101 are open. A stroke for aligning the middle portion of the glass tube into a position to connect with waterline, and a stroke for continuously holding the upper and lower ends of the glass tube along the movement winding axis along the upper and lower movement trajectory of the glass tube which changes as it is wound around the double-helical member 101 on one side, and one side. Stroke to move horizontally to the other double helix member 111 side while holding the upper and lower ends of the glass tube GT bent in the form of a double helix curved tube 10 to the double helix member 101, It has a configuration in which the song of the administrative district in the bending forming is complete the glass tube (GT) in the form of a tubular tube 10 can be transported toward the mounting table, located in the outer chamber of the molding device, in the direction of position control.

As shown in FIG. 17, the configuration of the molding compensator includes a double-acting pneumatic cylinder 323 which is integrally attached to the upper end of the upper gripper 301 by a support 325 and connected to a pneumatic circuit, and the pneumatic pressure. A hollow working rod 321 through which the upper and lower cylinders are connected to the cylinder 323, and an air supply pipe 324 is connected to the upper end thereof, and a lower side of the operating rod 321 is installed on the upper side of the glass tube GT. It is formed as a molding correction device 300 consisting of air nozzles (322) in and out in close contact with the inner wall inside the stage (GTa).

In the above configuration, the pneumatic cylinder 323 integrally attached to the glass tube upper holding hole 301 and the air nozzles 322 formed at the tip of the operating rod are connected to a separate pneumatic circuit but not set in the drawing, and are preset. At this time, the main controller is operated independently by the main controller.

The molding compensator 300 having such a configuration is formed in a double spiral curved tube forming process, and the lower end GTb of the glass tube GT which is bent and gripped in the form of a double spiral curved tube in the lower gripper 311 is rubberized. In the closed state with the stopper 321, the pneumatic cylinder 323 is controlled to operate, and the air nozzle 322 is injected into the glass tube GT with a constant pressure of air from the upper end GTa side, and bending molding is performed. Bar is a configuration that restores the cross-section of the glass tube warped in an elliptical shape to a circular cross section,

When not in operation, as shown in FIG. 17A, the air nozzle 322 is raised at the end of the upper end GTa of the glass tube GT bent in the form of a double spiral curved tube 10 by raising the operating rod 321. ) Is controlled to be a distance apart,

At the time of the molding correction process, as shown in FIG. 17 (b), the pneumatic cylinder 323 is operated to lower the operation rod 321 to bend the glass tube GT in the form of a double helix curved tube 10. After the air nozzle 322 is inserted into the tube of the upper end GTa in a sealed form, the air nozzle 322 is passed through the hollow portion of the operating rod 321 through the air supply pipe 324 connected to the upper end of the operating rod 321. Injection molding the air at a constant pressure for a certain time to perform molding correction, and after the molding correction, the air supply is cut off and the pneumatic cylinder 323 is controlled again to raise the operating rod 321 to raise the double spiral curved tube. The air nozzle 322 inserted into the upper end GTa of the glass tube GT formed in the shape is controlled to be raised to the original position.

The mold rotating device is configured to simultaneously rotate the left and right double helix members 111 and 101 on the upper surface of the horizontal support 208 at the same time in both forward and reverse directions.

The spline driving side penetrates the lower ends of the left and right mold support members 212 and 202 in an orthogonal direction while being freely supported by the left and right brackets 402 and 401 fixed to both ends of the horizontal support 208 at a predetermined height. And a drive motor 404 configured to be driven concentrically on an outer side of one bracket 401 on the drive shaft 403, and splined on an outer surface of the spline drive side 403, respectively. Left and right lower timing gears 415 and 405 fixed to an outer surface of the lower bearing members 217, which are freely arranged by the lower end of the support members 212 and 202 and the bearing 418, Upper timing gears 416 and 406 fixedly arranged on the rotary shafts 112 and 102 pivotally formed by the upper bearing 207 at the upper ends of the mold supporting members 212 and 202, Right and left timing belts 41 for interlocking the upper and lower timing gears 416, 406, 415, 405. 7) 407.

The mold supporting apparatus having such a configuration is formed by the pneumatic cylinders 215 and 205 when the driving motor 404 is rotationally controlled in any of the forward and reverse directions at the control operation point set by the main controller. Even if the supporting members 212 and 202 are moved to any position on the left and right sides, the upper and lower timing gears 416, 406, 415 and 405 which are freely installed on the respective left and right mold supporting members 212 and 202 are rotated freely. They are always able to receive the driving force of the drive motor 404 to the spline drive side 403, the left and right double helix members 111 (Rolling freely arranged on the top of the left and right mold support members 212, 202, respectively) 101) can be rotated in synchronization in the same direction at the same time.

In one embodiment of the present invention, the automatic molding apparatus may additionally include a heating apparatus capable of performing a heating process of the double-helical member presented in the above-described molding method.

This heating apparatus has left and right spiral heating devices 501 and 502 which are installed in the form of wrapping in a cylindrical shape at regular intervals on the outer circumferential surfaces of the left and right double helix members 111 and 101 as shown in FIG. Although not shown in the drawing, the hollow cores may be formed in the longitudinal direction in the centers of the left and right double helix members 111 and 101, respectively, to form a built-in heater.

The configuration of the left and right helix heating apparatus 510, 500 of the embodiment, as shown in FIG. 18, etc., annularly spaced at a predetermined interval over a certain width of the outer peripheral surface of the left and right double helix members 111, 101 Heaters 511 and 501 to be installed, cylindrical heaters 512 and 502 which wrap and support the heaters 511 and 501 and prevent heat radiation, and fix the heaters 512 and 502 The lower end is composed of supports 513 and 503 fixed to the middle portion of the horizontal support 208, so that the heaters 511 and 501 are electrically connected to a separately installed power control device depending on the working process. It is a configuration that is controlled to maintain a constant temperature within the required set range.

The process of bending the double spiral curved tube 10 of one example by the double spiral curved tube forming apparatus as described above is carried out as follows.

The bending process of the double helix curved tube 10 by the molding apparatus of the one embodiment, the atmospheric process-glass tube supply process-glass tube middle gripping process-double helix bending process-forming the bent double helix curved tube Correction process-Glass tube gripping release process-In addition to the basic process performed by separating the bending mold and the double helix curved tube, the moving process of additionally moving the bent double helix curved tube to the outside of the forming apparatus will be performed. Can be.

The standby process controls the pneumatic cylinders 215 and 205, which are horizontal movement control means, as shown in FIG. 18 and the like, to the left and right mold support members 212 connected to the respective operation rods 216 and 206. 202 are moved to the left and right by a predetermined distance, and the left and right double helix members 111 and 101 of the left and right mold support members 212 and 202 are spaced apart at regular intervals on the axis of rotation, additionally When the left and right helix heating devices 510 and 500 are installed, the left and right double helix members 111 and 101 are positioned at the center of each of the heaters 511 and 501, respectively. 501) is electrically controlled to heat the outer circumferential surface of the left and right double helix members 111 and 101 to a predetermined temperature.

In the glass tube supplying process, as shown in FIG. 18, a fluorescent glass is applied to the inside and a straight glass tube GT of a suitable length in which a lower end is closed by a rubber stopper 321 is located on the upper side of the molding apparatus. In the state of preheating to a predetermined temperature suitable for bending molding by the preheating apparatus 700, the upper and lower ends of the glass tube GT is controlled by controlling the upper and lower grippers 301 and 302 installed on the hanger of the multi-axis robot with a predetermined movement trajectory. Grasping, the middle portion of the glass tube (GT) is located at the central point where the left and right double helix members 111, 101 are connected and separated, and the upper and lower ends of the glass tube are orthogonal to the center axis of the left and right double helix members 111 (101). As a process of feeding in a position to be repaired, this process is started by an electrical signal applied when the glass tube GT is preheated in the preheater 700.

As shown in FIG. 19, the middle part of the glass tube gripping process is performed by moving the left and right double helix members 111 and 101 which are opened in the air process in the opposite direction to the spreading control in the air process. By moving the left and right double helix members 111 and 101 to the center side to control the vertical end portions 113 and 103 on both sides to abut, while simultaneously operating both mold rotating devices, the vertical end portion of one double helix member 11 ( The through axis of the glass tube support groove 115 formed in the 113 is positioned in the vertical repair direction as shown in FIG. 10, and the upper and lower ends of the glass tube support groove 115 are gripped by the front and rear double spiral members. The intermediate part of the glass tube GT fixedly gripped in a water-tight manner in the connection position space part of (111) (101) is inserted into the support groove 115 formed in the vertical end part 113 of one double-helical member 111, and the other side. Some pressure on the vertical end 103 of the double helix member 101 To be connected.

According to this glass tube gripping process, the left and right double helix members 111 and 101 are intimately aligned at the center in a straight line on the same horizontal axis by the connecting protrusions 114 and the connecting grooves 104 on both vertical ends 113 and 103. The double helix semicircular grooves 109 of the left and right double helix members 111 and 101 are connected to each other at the vertical end portions 113 and 103, which are the connecting portions, to be identically connected to each other at a double helix angle of the same rotational angle. Continuously connected to the members 111 and 101 is formed in the form of one double helix member.

In the double spiral bending process, the mold rotating device and the upper and lower end grippers 301 and 311 are inserted in the state where the glass tube GT is inserted into the connection portion of the left and right double helix members 111 and 101 by the glass tube gripping process. At the same time, it is a process of bending with double helix by controlling the position independently.

As shown in FIG. 20, when the drive motor 404 of the mold rotating device is controlled to control the spline drive side 403 by rotating the predetermined revolution in the direction of the image table P1, the spline drive side 403 is built up. As the lower timing gears 415 and 405 rotate in the same direction, the upper timing gears 416 and 406 also rotate in the same direction by the timing belts 417 and 407, and thus the left and right double helix members 111 are rotated. ) 101 are also rotated in the same direction, so that the remaining both sides of the glass tube (GT), the middle portion is gripped by the connecting portion of the left and right double helix members 111, 101, double helix on the right double helix member 101 side It is wound in a semicircular groove 109 and bent to a double spiral bent tube of a certain number of turns.

This double helix bending process is in accordance with the movement position of the upper and lower ends of the glass tube GT wound around the double helix semicircular groove 109 on the right side of the double helix member 101, the upper and lower holding grips holding the glass tube (GT) ( 301) (311) by turning the holding sphere to the right along the double helix angle while gradually downward from the holding position on the first waterline, and at the same time by the multi-directional position control operation to move to the right side along the double helix winding, Preheated glass tube (GT) can be bent smoothly along the double helix semi-circular groove 109 while maintaining a normal cross-sectional shape without distortion, such as twisting, stretching, sagging.

The molding correction process of the bent double helix curved tube is bent by the shaping correction device 300 in a state where the double helix bending of the straight glass tube GT to the right double helix member 101 is completed in the preceding step. It is a process of restoring the cross section of the oval-shaped glass tube to a circular section during molding.

As shown in FIG. 21, the glass tube GT is bent in the form of a double helix curved tube 10 in a state in which the lower end GTb of the glass tube is closed with a rubber stopper 312 as shown in FIG. At the end of the upper end GTa of FIG. 7), as shown in FIG. 17A, the pneumatic circuit is controlled to operate and the air nozzle 322 of the pneumatic cylinder 323 is inserted into the glass tube. After injecting air of a certain pressure to the nozzle 322 for a predetermined time to restore the cross-section of the glass tube curved in an elliptical shape to a circular cross section during bending molding, the air injection is blocked, and the pneumatic cylinder 323 is operated in the opposite direction again. The nozzle 322 is removed from the upper end GTa of the glass tube GT, and the stroke 322 is controlled to return to its original position.

According to the molding correction process of this stroke, in the process of bending a straight glass tube (GT) into a double helix curved pipe by the double spiral bending process, the preheating unevenness in the preheating device or the heat loss during the movement after preheating, and during molding Due to various factors such as heat loss due to contact with the double helix member 101, a partial temperature deviation occurs in the glass tube GT. When bending into a double helix, the circular cross section is partially distorted on the spiral circumference and is generally elliptical. It is possible to restore the pressed cross-sectional shape to a smooth circular cross section,

Although the rider idea of correcting the cross-sectional shape of a tube by injecting a constant pressure of air into a bent molded glass tube is known, the air injection device of the present invention is integrally formed with upper and lower grippers 301 and 302 to operate pneumatically. It is characterized by the fact that it is a simple configuration and easy to control and automatically injects the air, and is formed of one component which is very critical for automating the molding apparatus of the present invention as in one embodiment. Therefore, by automating the bending molding of the double helix curved tube, it is possible to increase the productivity, and shorten the bending man-hours.

The glass tube gripping release process is the top 11 of the formed double helix curved tube in the state where the straight glass tube (GT) is bent to the double helix member 101 on one side of the double helix member 101 in the previous step (the middle before forming) (B) A step of releasing the holding state by separating the vertical end 113 of the left double helix member 111 holding the outer side into the support groove 115.

As shown in FIG. 22, the left pneumatic cylinder 215, which is a horizontal movement control means of the left mold moving apparatus, is operated to retreat to the predetermined position to the left mold supporting member 212 connected to the operation rod 216. To the standby position.

The process of separating the bending mold and the double helix curved tube is performed by simultaneously controlling and controlling the mold rotating device and the upper and lower gripping holes 301 and 302 following the preceding step, so that the double helix semicircular groove 109 of the right double helix member 101 is operated. As a step of separating the glass tube (GT) bent and wound in the form of a double helix curved tube (10) in the double helix semicircular groove (109) of the right double helix member 101,

In the state as shown in FIG. 22 in which the vertical end 113 of the left double helix member 111 holding the glass tube GT in the form of the formed double helix curved tube 10 is supported by the support groove 115, The drive motor 404 of the mold rotating device is operated in reverse rotation control so that the lower timing gears 415, 405, the timing belts 417, 407 and the upper timing gear 416 built up on the spline drive side 403. The upper and lower waves holding the upper and lower ends of the bent glass tube GT while rotating the left and right double helix members 111 and 101 by reverse rotation, and rotating the right double helix member 101 at the same time. The earths 301 and 311 are controlled by horizontal movement control to the left on the horizontal line in response to the rotational speed of the right double helix member 101, and then the right pneumatic cylinder 205 is operated to the right by the operation rod 206. Right mold support member (2) by horizontally moving the mold support member (202) to the right 02) is completed in the standby process state on the right.

According to this process, the glass tube GT in the form of a double helix curved tube 10 wound around the right double helix member 101 is formed in a double helix semicircular groove 109 of the inner circumferential surface of the double helix member 101. ) Is wound in a double-screw nut shape, and when the right double helix member 101 is reversely rotated in the release direction and the glass tube GT is also horizontally moved to the left in the release direction, the right double helix member 101 is rotated. The glass tube (GT) in the form of a double helix curved tube 10, which is bent in two to four turns, has a characteristic that can be quickly and mechanically separated from the right double helix member 101.

According to such a basic process, it is possible to bend a predetermined double helix curved tube 10 as in one embodiment, and the bending process may be performed by performing a moving process of a double helix curved tube that is additionally bent to the series of processes. Automated molding operation can be achieved.

The moving step of the double helix curved tube is a step of moving the double helix curved tube 10 formed through the above-described steps to the outside of the molding apparatus.

As shown in FIG. 23, the lower gripper is a glass tube GT held only by the upper and lower grippers 301 and 311 in the air between the left and right double helix members 111 and 101 reversed to both sides by the separating process. 311 releases the holding state and moves to the outside, and then grips the upper end GTa of the glass tube GT bent in the form of a double helix curved tube 10 with only the upper holding hole 301 to the outside of the molding apparatus. It is carried out by moving to the finished goods loading stand side provided in the side.

During the bending process of the bending-formed double helix curved tube as described above, when the left and right helix heating devices 510 and 500 are additionally installed, the left and right heating zones 512 and 502 are respectively opened. The left and right double helix members 111 and 101 located at the center are uniformly reheated by the heaters 511 and 501 electrically controlled by the main controller to be reduced to the initial atmospheric process state.

The double helix curved tube 10 moved to the loading table by the bending process of the bent double helix curved tube 10 is the last step of cutting the spiral tube ends 12a and 13a at a proper position in a separate production line. As shown in the fourth, fifth, sixth, seventh, and the like, the discharge electrodes 15, the introduction tubes 16, 17, 16a, and 17a are respectively formed therein, and known mercury. Through the inlet process and the degassing process, etc., it manufactures with the predetermined | prescribed double spiral curved fluorescent lamp 10a (10b) etc. for fluorescent lamps.

In performing the series of bending processes described above, the preheating device 700 detects that the glass tube GT is preheated in an appropriate state for bending molding, and applies it as an electrical signal to the main controller that controls the overall molding devices. The main control device controls the position of the multi-axis robot according to the application signal, and the stroke cycle of drawing up the glass tube GT preheated from the preheating device 700 by the upper and lower grippers 301 and 312 is the circumference of the bending molding process. In accordance with the present invention, the bending process of moving the completed double-helical curved tube 10 from the standby process to the loading stage is carried out step by step, so that the automatic molding apparatus may be repeatedly performed at a predetermined cycle.

As described above, according to one embodiment of the present invention, the method of forming a double spiral and the automatic molding apparatus, all the processes of bending a straight glass tube GT into an example of a double spiral curved tube 10 are automated to perform continuous and simple operations. It has the feature of giving mass productivity with fully automatic

As a result, the bending work, which is an important process in the manufacturing process of fluorescent lamps, has the advantages of shortening the effect of manufacturing means, shortening the production process, and enhancing the performance, and improving the quality of quality control and significantly increasing the quality uniformity and productivity. will be.

The configuration of the molding apparatus in the present invention carried out as described above is not necessarily limited to the illustrated embodiment.

The configuration of the left and right double helix members 111 and 101 suggests an example of the most preferable mold that can be used in the apparatus for automatically forming the double helix curved tube 10 as an example, and is preheated in the glass tube preheater. The glass tube (GT) is supplied horizontally, it can be carried out even in the horizontal installation, double-screw mold of the glass tube by manually holding and supplying the pre-heated glass tube as well as the automatic molding apparatus as an embodiment It is a configuration that can be used independently even in the manual molding method of the winding type.

In addition, the left and right double helix members of the double helix mold is installed in a prefabricated replaceable to the left and right mold support member of an example, for example, the shape of the spiral portion of the double helix member as a member formed with a double helix of the cone (cone) type Depending on the shape of the helix of the double helix member employed, any spiral shape and shape may be employed, such as to allow bending of a cone-shaped double helix curved tube with a larger diameter at the bottom. The bending molding of the curved tube having can be easily performed.

Claims (9)

In forming double spiral curved tube for bulb type fluorescent lamp, each of them is controlled to move from side to side on the same axis of rotation and installed to face each other so that the middle part of the glass tube in waterline can be fitted to one vertical end and pressed on the center waterline of the other vertical end. Using a double helix mold, the atmospheric step of opening the double helix mold to the left and right, and the upper and lower ends are gripped by a straight glass tube gripping device preheated by a preheater, and repaired at the connection position of the opened left and right double helix members. Glass tube supplying process for moving and holding, glass middle part holding process for supporting the middle part of the supplied glass tube by moving the left and right double helix members in the middle to the connection part of both double helix members, and the double helix members in both directions in the spiral winding direction Rotate the number of times to wind the glass tube in double helix on the double helix member At the same time, the double-helical bending process of controlling the glass tube gripping device in accordance with the upper and lower movement trajectories of the wound glass tube, and by injecting a constant pressure air into the tube for a predetermined time by the molding correction device at the upper end of the bent tube Molding correction process for correcting the deflection of the pipe section, glass gripping release process for releasing the pressurization of the upper part of the double helix curved tube that is bent by reversing one double helix member, and rotating the bending double helix member in reverse rotation. At the same time, a double spiral curved tube is formed by bending the upper and lower ends with a glass tube gripping device in a direction opposite to the winding direction. Forming method of curved tube. The method of claim 1, wherein the standby step of waiting for the left and right double helix members to be opened to the left and right respectively includes performing heating by controlling the temperature at a predetermined temperature by an electric heater-type heating device wrapping the outer surface of the double helix member at a predetermined interval. Forming method of the curved tube for the bulb-type fluorescent lamp, characterized in that. The method of forming a curved tube for a fluorescent lamp according to claim 1, wherein the glass tube supplying process is started by an electrical signal applied as a linear glass tube preheated to the preheater is preheated to an appropriate temperature for bending molding. . Forming a curved tube for a bulb type fluorescent lamp, the double helix semicircular groove of the same shape as the inner circumferential surface of the double helix curved tube to be formed is formed of two cylindrical left and right double helix members with a predetermined length On the vertical end side of the spiral member, a double helix mold having support means for pressing and connecting the preheated straight glass tube middle part to the other vertical end, and the upper and lower ends of the glass tube preheated from the preheating device are independently gripped to the double helix mold side. Glass tube gripping device consisting of tong-type upper and lower gripping holes fixed to a hanger of a multi-axis robot controlled by a series of strokes according to the molding process, and rotating materials facing each other on the same horizontal axis of constant height on a pedestal. It is provided with a mold support member that is configured to be easily pivoted A pair of left and right mold moving devices each having a moving means for horizontally controlling the mold supporting members independently from side to side to open the right double helix members at regular intervals or to be connected in the form of a single double helix member; And a mold rotating device having a driving means and a driving force transmitting means for rotating and simultaneously rotating in both forward and reverse directions at any position to which the wheels are moved, and a predetermined pressure of air inside the pipe which is installed in the glass tube holding device and is bent under the control of a pneumatic circuit. The apparatus for forming a curved tube for a bulb type fluorescent lamp, characterized in that it comprises a forming correction device for intermittent supply. A mold for bending a double helix curved tube, wherein a double helix semicircular groove 109 having the same shape as the inner circumferential surface of the double helix curved tube to be formed is engraved with a predetermined length on the outer circumferential surface of the round bar and separated from the left and right on the same central axis. Or, when coupled by the coupling means is formed of left and right double helix members 111, 101 formed of one double helix member, the coupling means is formed on the one side vertical end 103 two connecting grooves 104 In addition, the other vertical end 113 is provided with a connecting protrusion 114 fitted into the two connecting grooves 104 is configured to be connected only at the same position at both sides of the spiral angle is always the same rotation angle, the two left and right In the vertical end 113 of one side of the double helix member 111 in which the glass tube is not bent among the double helix members 111 and 101, a support groove 115 having a shape surrounding the outer surface of the organic tube GT to be bent is doubled. Spiral member Double helix mold, characterized in that formed in the direction perpendicular to the central axis. 5. The moving means of the mold supporting members provided in the mold rotating apparatus includes two left and right pairs of left and right mold supporting members 212 and 202 protruding from the horizontal surface 208 in the horizontal direction. The two guides 209 can be installed in the slide members 211 and 201 only in the left and right directions, and pneumatic cylinders 215 and 205 are installed on both sides of the center portion of the horizontal support 208, respectively. Curved bulb for fluorescent lamps, characterized in that formed in the configuration in which each of the actuating rods (206, 216) of the pneumatic cylinders (215, 205) are connected to one inner end of the slide members (201, 211), respectively. Forming apparatus for tubular tube. 5. The mold rotating apparatus according to claim 4, wherein the mold rotating apparatus has a driving means and a driving force transmitting means for rotating the left and right double helix members 111 and 101 simultaneously at both positions in both forward and reverse directions. The spline driving side 403 which is freely supported by the brackets 402, 401 at both sides at a predetermined height and penetrates the lower ends of the left and right mold support members 212, 202 in an orthogonal direction, and the drive shaft 403 Drive motor 404 is concentrically arranged on the outer side of one side bracket 401 and the spline shaft is formed on the outer surface of the spline drive side 403 while the left and right mold support members 212, 202 The left and right lower timing gears 415 and 405 fixed to the lower bearing members 217 that are freely installed at the lower end thereof, and the upper bearing 207 at the upper end of the left and right mold support members 212 and 202. Pivoted by Left and right timing belts 417 for interlocking the upper timing gears 416 and 406 fixedly arranged on the front shafts 112 and 102, and the upper and lower timing gears 416, 406, 415 and 405, respectively. Apparatus for forming a curved tube for bulb type fluorescent lamp, characterized in that consisting of (407). 5. The configuration of the molding correction device of claim 4, wherein the forming and correction device for intermittently supplying air of a constant pressure to the inside of the tube which is installed in the glass tube gripping apparatus and bent under the control of a pneumatic circuit is provided. Connected to the pneumatic circuit at the upper end and the hollow working rod 321 is installed through the vertically installed pneumatic cylinder 323 is integrally attached by the support 325, the lower end of the operating rod 321 In the down operation of the operating rod is provided with an air nozzle 322 to enter and exit in close contact with the inner wall inside the upper end (GTa) of the glass tube (GT), the upper is characterized in that by connecting the air supply pipe 324 Apparatus for forming a curved tube for an old fluorescent lamp. According to claim 4, The automatic molding apparatus, the heater 511, 501 which is installed in an annular space at a predetermined interval over a predetermined width of the outer peripheral surface of the left and right double helix members 111, 101 cylindrical heating table 512 ( Wrapped with 502, fixedly installed in the middle of the horizontal support 208 with the support 513, 503, respectively, the heaters 511, 501 are electrically connected to the power control device to control at a constant temperature Curved molding apparatus for bulb type fluorescent lamp, characterized in that the left and right helix heating apparatus (510) (500).