CN1256506A

CN1256506A - Method and device for making helical glass coil pipe for daylight lamp

Info

Publication number: CN1256506A
Application number: CN99120969A
Authority: CN
Inventors: 沃特霍泽
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-30
Filing date: 1999-11-29
Publication date: 2000-06-14
Also published as: DE19855240A1

Abstract

Glass spiral production comprises a bending process for a heated glass tube, employing a driven winding thorn exhibiting a combined rotary and linear movement in the axial direction of the fluorescent lamp and having an angled bearing surface with the same inclination angle as the coil turns of the obtained spiral. An Independent claim is also included for a device for the production of a glass spiral.

Description

The method and apparatus of the helical form glass coil pipe that the manufacturing fluorescent lamp is used

The present invention relates to make that fluorescent lamp is used, have a method and apparatus with the helical form glass coil pipe of the end of parallel axes.

Consider from the cost angle, by hand labour with venerate and have the helical form glass coil pipe that the manufacturing fluorescent lamp is used in low-wage country to be still feasible basically.

Yet it is also still being widely used of working in this respect that simple coil device is proved to be.

The end that generally requires the glass coil pipe is by continuous bend Cheng Yuqi parallel axes.And this procedure of processing not only needs the technical ability of height, and can only carry out after reheating crooked position.

Twice heating glass pipe will cause extra energy consumption.Even in sweated country, this extra procedure of processing also is a key factor of cost.

The purpose of this invention is to provide a kind of method of avoiding twice heating glass pipe, and a kind of device be provided, so as to allow in the isolated system with the glass tube coiled after with its end bent Cheng Yuqi parallel axes.

This method comprises and may further comprise the steps that at first the rotation by winding mandrels makes the heated glass pipe form coil pipe, and then, the axial motion by winding mandrels makes the end of glass tube along the direction bending that is parallel to its axis.

In this suggestion winding mandrels is made a smooth cylinder that does not have thread contour, therefore no longer need to screw off coil pipe.And up to now, all provide screwed winding mandrels, so that provide required shape to coil pipe.According to the present invention, this can produce by the area supported that tilts, and the gradient of this inclined surface is corresponding to the angle of inclination of coil pipe, and the heated glass pipe is placed on this surface and flows to the winding mandrels of rotation.Then, winding mandrels is according to the pitch axial motion, this with done up to now identical.

After reaching required coil lengths, the screw of winding mandrels finishes, and winding mandrels moves away area supported along straight line, until operator's jag of curved glass pipe easily.For this reason, need two shoulders, they have make glass tube end parts parallel in the required shape of its axis.Block helps accurately to keep size.

The support that has than the winding mandrels of minor diameter can provide additional space, so that can control the end of glass tube.

In order to obtain the net shape of glass tube crooked end, also suggestion is by moving the shape that (for example) is pressed into the end of glass tube by the pressure mould of graphite manufacturing regulation.

Advantage of the present invention be by an isolated system just can with behind the glass tube coiled with its end bent Cheng Yuqi parallel axes, thereby can avoid the heating glass pipe twice.

Be detailed introduction below, but this device only is an example, because many design detailss are applicable to corresponding condition or be changed according to device of the present invention.

Fig. 1 and 2 is at the front view of the winding mandrels of initial position and end view;

Fig. 1 a and 2a are the corresponding horizontal perspective views;

Fig. 3 has shown the same axle of finishing behind the coiling;

Fig. 4 has shown the winding mandrels on abundant extended position, and it has the glass tube end that has been shaped;

Fig. 3 a and 4a also are the corresponding horizontal perspective views.

At first, introduce according to a winding mandrels of the present invention in detail, it can be used to make the glass coil pipe, and forms the glass tube end of paralleling to the axis in a procedure of processing.

Referring to Fig. 1, at first can introduce basic structure according to of the present invention one smooth cylindrical winding mandrels 1.Two bearing parts 2 are arranged in the top, and they usually are simple round pins, perhaps also can have 3D shape, so that the coil pipe top of radius variable is provided.

In the lower end of winding mandrels 1, be the position at place, coil pipe end, the shoulders 4 of two 180 degree of being separated by are arranged on the winding mandrels 1, shoulder 4 has ramp 8, this ramp 8 is corresponding to the required shape in the end 7 of the glass tube 11 that will be bent.The shoulder 4 of winding mandrels 1 also has block 5, and this block 5 helps to determine accurate position in the end bent process of glass tube 11.Winding mandrels 1 is fixed on the support 6, and support 6 should have less diameter, so that can suitably clamp crooked end 7.

Fig. 1 a has shown the each several part of the winding mandrels 1 in horizontal projection.

As illustrated in fig. 1 and 2, when the beginning bending machining, the upper end of winding mandrels 1 is positioned on the height of inclined surface 3, and it is workbench that this inclined surface can be regarded as.As shown in Figure 2, but glass tube 11 that heated and slightly deformed is placed between the bearing part 2, and is positioned on the inclined surface 3.For ease of understanding, dotted line is represented glass tube 11 during insertion.

By machinery or other type of drive winding mandrels 1 helical form is rotated, even it does axial motion when rotating, like this, glass tube 11 is wound into a helix on the smooth cylindrical part of winding mandrels 1.The accurate orientation of coil pipe 10 and its pitch not only depend on the axial motion of winding mandrels, also depend on the adjustment angle of inclined surface 3.Shown in example in, rotate after 1  changes at winding mandrels 1, the coiling end-of-job also is on the position shown in Figure 3.Shown in Fig. 3 a, the end 7 of glass tube 11 roughly is oriented in a tangential direction outstanding and still is positioned on the inclined surface 3.

According to processing technology, the coiling end-of-job moves winding mandrels 1 straight line, as shown in Figure 4.Then, the operator can place end 7 on the ramp 8 by hand and be bent to block 5 places or corresponding to the shape of winding mandrels 1.

Because it is difficult with hand being pressurizeed in the end 7 of the heat of glass tube 11, therefore can utilize (for example) to form final accurate shape by the pressure mould 9 usefulness mechanical means of graphite or other heat proof material manufacturing.Fig. 4 and Fig. 4 a have schematically shown this device, and this device can move by hand or mechanical means.Under the simplest situation, this pressure mould 9 can be a clamp.

In brief, can see, not only shorten half process time approximately according to the production of helical form glass coil pipe of the present invention, and reduced energy loss significantly, thereby provided cost savings.And can improve output greatly, thereby reduced cost of investment.

Claims

1. method of making that fluorescent lamp is used, as to have the end that is parallel to its axis helical form glass coil pipe, it is characterized in that, the spirality coiling and be parallel to its axis the end bending by one the device in a procedure of processing, carry out, this installs at first helical rotation, and the axis direction straight line along fluorescent tube moves then.

2. a device of implementing the described method of claim 1 is characterized in that, winding mandrels is smooth cylinder, but an area supported that tilts is set to keep the pitch of coil pipe, and its gradient is corresponding to this angle of pitch.

3. device as claimed in claim 2, it is characterized in that, one end of winding mandrels has bearing part, and on cylinder, have larger-diameter two shoulders and be positioned at coiling end, this shoulder has the glass tube of making end parts parallel in the needed shape of its axis.

4. device as claimed in claim 3 is characterized in that, is provided with block on winding mandrels, so that determine the exact position of the crooked end that parallels to the axis.

5. device as claimed in claim 2 is characterized in that, winding mandrels is installed on the support that has than minor diameter, so that make the glass tube end unhinderedly remain on case of bending.

6. as claim 4 or 5 described devices, it is characterized in that, also comprise movably pressure mould, so that end bent is afterwards being implemented accurate localization to the position of paralleling to the axis.