CN2281350Y

CN2281350Y - Bending apparatus for lamp tube

Info

Publication number: CN2281350Y
Application number: CN 96243277
Authority: CN
Inventors: 魏明海
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-30
Filing date: 1996-11-30
Publication date: 1998-05-13
Anticipated expiration: 2006-11-30

Abstract

The utility model relates to a bending apparatus for lamp tubes, which is used for the opposite folding and curved shaping and molding of a second time double tube of an energy saving fluorescent tube. The utility model is composed of three modules, a lamp tube brake forming cavity is respectively arranged on each module, and the molding cavity face of each module on a mold release direction is in a flat shape. The lamp tubes bended by the utility model have the advantages of good consistency, and high yield.

Description

Fluorescent tube brake forming device

The energy-conservation fluorescence lamp of SL has obtained to use widely.The making of its glass lamp is with a Glass tubing through heating doubling bending once, become two-tube, with the two-tube bending of doubling more once, form profile as shown in Figure 1: it is an integral body that whole fluorescent tube is connected in series successively by four Glass tubings of arranging by square formation, constitute three orthogonal U-shaped pipes, four Glass tubing tube walls are respectively circular.In the existing manufacturing technology of above-mentioned fluorescent tube, single tube doubling bending for the first time can be made of tube-bending machine, and the fluorescent tube that curves is even, and the caliber of curved part and former pipe caliber are approximate.Two-tube doubling bending for the second time all is to operate by hand, and it is flat that its curved part caliber obviously becomes, and the fluorescent tube consistence that curves is poor, and yield rate is low.

The purpose of this utility model is to design a kind of shaped device (being shaping and forming mould) to power saving fluorescent lamps two-tube doubling bending for the second time, requirement has shaping and moulding effect to two-tube curved part, and the easily demoulding, the fluorescent tube high conformity that curves, yield rate height.

The utility model is made of three modules at least, contains some fluorescent tube on each module respectively and bends to die cavity, and a part of fluorescent tube that contains respectively on each module bends to the global formation chamber that die cavity is combined into the two-tube doubling of fluorescent tube crooked position when crooked.

For ease of the demoulding, the forming cavity face of each module on stripping direction becomes planeform.

Handle the aforesaid combination module with machine, each module is merged, form the global formation chamber of two-tube doubling crooked position when crooked in inside modules, in glass lamp, pass to certain air pressure in addition, the two-tube curved part shaping of glass that will softening attitude and be shaped to the die cavity shape.The fluorescent tube high conformity that so curves, curved part is full, attractive in appearance, bend pipe yield rate height.Because the forming cavity face of each module on stripping direction becomes planeform, also make to be easy to the demoulding.

Fig. 1 is a fluorescent lamp tube;

Fig. 2 is the utility model left side module three-dimensional view;

Fig. 3 is the utility model intermediate module three-dimensional view;

Fig. 4 is the right module three-dimensional view of the utility model;

Fig. 5 is left module vertical view;

Fig. 6 is the intermediate module vertical view;

Fig. 7 is right module vertical view;

Fig. 8 is the vertical view after the module matched moulds of left, center, right;

Fig. 9 is an A-A sectional view among Fig. 8.

Figure 10 is the sectional view of the fluorescent tube of the utility model brake forming.

Below in conjunction with accompanying drawing the utility model is further specified:

See Fig. 2,3,4, the one-sided fluorescent tube that contains respectively of left and right module bends to die cavity, and the intermediate module both sides have forming cavity respectively.Vertical view before the left, center, right module merges illustrates as Fig. 5,6,7 respectively; Vertical view such as Fig. 8 after three modules merge illustrate its sectional view such as Fig. 9.

Fluorescent tube bulb with machine carry out first time single tube doubling crooked and through machine to the crooked position shaping, through reheat, carry out the prebuckling of two-tube doubling bending for the second time with machine, at this moment, crooked position still is softening attitude, profile is with shown in Figure 1 close, by machine (pneumatic shuttle) with intermediate module from position shown in Figure 12 (vertical direction) progressive dies upwards, with a left side, right module is respectively from 1,3 position horizontal directions are progressive die in opposite directions, with a left side, in, right module merges, the mould cavity shaped design becomes two-tube crooked standard shape, in addition certain air pressure in two-tube, and the Glass tubing of softening attitude promptly is shaped to the die cavity shape.After cooling, left and right mould is respectively to the both sides demoulding (stripping direction is opposite with the progressive die direction), and the downward emaciated face mould of intermediate die is promptly finished the two-tube doubling brake forming of fluorescent tube process.The fluorescent tube sectional view of brake forming as shown in figure 10.

The utility model most preferred embodiment is the combined shaping mold that is made of three modules in above-mentioned left, center, right.The utility model also can be made of four modules, and wherein intermediate module is made of two amalgamations in front and back.

From Fig. 2, Fig. 3, Fig. 4 as seen, forming cavity face 1,2,3,4,5,6 faces of left, center, right module on stripping direction are respectively planeform, can be the vertical plane shapes, situation by way of exception, above-mentioned six faces also can be curved surfaces, and for example the conical surface needs only and guarantees that mould can the demoulding.

Claims

1, fluorescent tube brake forming device, it is characterized in that constituting by three modules at least, contain some fluorescent tube on each module respectively and bend to die cavity, a part of fluorescent tube that contains respectively on each module bends to the global formation chamber that die cavity is combined into the two-tube doubling crooked position of fluorescent tube.

2, by the described shaped device of claim 1, it is characterized in that its by left module, intermediate module, right module totally three modules form.

3, by the said shaped device of claim 1, it is characterized in that its by left module, intermediate module, right module totally four modules form, wherein intermediate module is made of front and back two module amalgamations.

4, by the said shaped device of claim 1, it is characterized in that the forming cavity face of said each module on stripping direction becomes planeform.