CN201245548Y

CN201245548Y - Heating device for florescent lamp bent tube

Info

Publication number: CN201245548Y
Application number: CNU2008200383102U
Authority: CN
Inventors: 吴建新; 杨洪刚; 史美春
Original assignee: YIXING CHENHONG LIGHTING ELECTRIC CO Ltd
Current assignee: YIXING CHENHONG LIGHTING ELECTRIC CO Ltd
Priority date: 2008-06-17
Filing date: 2008-06-17
Publication date: 2009-05-27
Anticipated expiration: 2018-06-17

Abstract

The utility model provides an improvement on a fluorescent light bend pipe heating and softening device. The improvement is characterized in that the pipe delivery device and brackets for positioning and placing glass tubes are arranged in parallel and at intervals; the brackets are driven by a lifting and forward-backward moving device to conduct clearance rectangular cycling movement and deliver pipes; the heating device is an oppositely folded heating cavity formed between the glass-tube brackets in parallel and at intervals, and an electrothermal device is arranged inside each heating cavity; the heating device has a simpler structure; during the open type flame melting and burning heating, the glass tubes can be heated uniformly, the heating is mild, and tube heating explosion can not happen, thereby greatly reducing the damage to the glass tubes in heating process, saving energy, eliminating the environmental limitation to heating and achieving excellent uniformity of the glass tube heating and softening. The glass tubes gradually move forwards to become non-rotary near linear manner, so as to ensure that the last segment can be heated, and the heating and softening glass tubes are clamped and pulled with a machine hand, thereby reducing drooping of the glass tubes in heating and softening process. Therefore, the qualification rate of follow-up blend pipe can be increased, the product rate of the blending pipe is increased, and the qualification rate can reach more than 96 percent.

Description

Luminescent lamp bend pipe heating unit

Technical field

Utility model is the improvement to luminescent lamp bend pipe thermoplastic glass-tube device, relates in particular to a kind of energy-conservationly, and softening glass-tube high conformity can effectively reduce softening crooked saggingly, and can adapt to the bend pipe heating unit of automated operation.

Background technology

Compact fluorescent lamp, for example H shape, U-shaped, D shape, volution, quincunx, sphere etc. all are to be formed through bending by the glass straight tube, have again through connecing the bridge combination, so bend pipe is one important procedure during compact type fluorescence is produced.For with the straight glass tube brake forming, need partly heat and makes it softening the glass straight tube bending, make it to have plasticity-.Existing luminescent lamp glass straight tube thermoplastic, usually adopt flame to fuse softening to rolling glass-tube crooked position direct heating, as described in Chinese patent CN1528690, by the glass-tube e Foerderanlage glass straight tube is carried by a rolling, and curved part is fused to softening, at last by the swan neck system brake forming by combustion flame.This directly heating makes it softening to glass-tube by combustion flame, and main deficiency is: flame fuses softening, and glass-tube fuses in thermal-flame suddenly, and booster takes place easily; Secondly, fuse, not only waste heat energy to open, not energy-conservation, and fuse production surrounding environment generation detrimentally affect, burning produces waste gas and pollutes, and summer, production plant was very high because of fusing sintering temperature; Besides, combustion flame is subject to environment, air feed, air feed etc. and fluctuates, cause flame instability, cause fusing softening inhomogeneous, follow-up bend pipe qualification rate is reduced, Φ 〉=12mm large-diameter pipe for example, the bend pipe qualification rate is usually less than 80%, and the often artificial flame of adjusting very bothers again, influence production efficiency, and be unfavorable for realizing automatic production.In addition, flame fuses the softening sag bent that very easily takes place in middle part, and serious even sag bent drops on flame, not only causes the waste of glass-tube, and influences normal bend pipe moulding.

The prior art usual method is the outer two ends of lengthening glass-tube supporting-point length, by the length counterweight balance of glass-tube two ends, reach that to reduce softening glass-tube crooked sagging and prevent that bending from dropping and fusing on the flame, the sheet pipe bends after the moulding again with unwanted counterweight glass-tube excision.Though yet this kind method can effectively be guaranteed two supports, fuse the few sag bent of glass-tube and drop, but it is to realize by lengthening two ends glass-tube counterweight, need the unnecessary counterweight glass-tube of excision behind the bend pipe, resection length accounts for total length about 30% usually, not only causes a large amount of wastes of glass-tube, increase the pipe consumption, strengthened production cost, and caliber is big more, for keeping fusing the few sagging of softening glass-tube, it is also long more that the counterweight termination is reserved at two ends, and the excision waste is also just big more like this.Secondly, the unnecessary counterweight part of excision not only increases the cutting action cost, but also can cause the otch injustice after the brake forming, and defective such as otch is crude, influences follow-uply to seal, tack, connect the qualification rate of bridge etc.Therefore be necessary to improve.

The utility model content

The utility model purpose is to overcome the deficiency of above-mentioned prior art, provides a kind of energy-conservation, and softening glass-tube high conformity can effectively reduce softening crooked sagging luminescent lamp bend pipe heating unit.

The utility model purpose realizes, the main improvement is that the glass-tube heating is carried out in relative closure in-built electrical well heater chamber, glass-tube moves into/shifts out the well heater chamber by the rectangular movement locus that moves in circles by a conveying, thereby overcomes the deficiencies in the prior art, realizes the utility model purpose.Specifically, utility model luminescent lamp bend pipe heating unit, comprise the pipe-conveying device of glass-tube being carried successively heating, with heating makes its remollescent heating unit to the glass-tube curved section, it is characterized in that said pipe-conveying device is alternate and shows the location and shelve the glass-tube support, support is by lifting and move forward and backward the device driving, makes the mobile pipe that send of gap rectangle circulation, said heating unit is the involutory heating chamber that is arranged between alternate glass-tube support arranged side by side, and electric heating device is arranged in the heating chamber.

The said lifting of utility model and move forward and backward device, its effect is to make the support of putting a glass-tube, produce the rectangle cyclic motion and carry glass-tube, can adopt the mechanism that to realize above-mentioned functions in the prior art, wherein a kind of employing air cylinder driven that is preferably, it is low to have cost simple in structure, is more conducive to realize automatic control.

Involutory heating chamber, main effect provides the heating space of a relative closure, makes glass-tube obtain thermoplastic in this space, and its structure formation is not particularly limited.Electric heater unit in the heating chamber can be a nichrome wire, and calrod etc. can also be hollow wall in-built electrical heating thermal oil or circulating heat conduction wet goods etc.

Glass-tube is shelved in the location on the support, can be groove, also can be protruding retaining, and its effect is the location and carries glass-tube.Said location, a kind of better is the both sides symmetry.

In addition, be further to reduce the heat-energy losses of heating chamber, a kind of better on two side, chamber above and/or under the involutory heating chamber, have with the glass-tube support on equidistant glass-tube shelve groove, involutory heating chamber is heated glass-tube under basic closure, reduce heat energy and outwards scatter and disappear.In addition, also can be in involutory heating chamber and/or outside wall surface be covered with thermal insulation layer, for example insulating fire brick scatters and disappears with heat in effective minimizing heating chamber.

Involutory heating chamber length can be to the heating of glass-tube, also can be simultaneously to two or many glass-tubes heating, and according to the decision of device size, a kind of prioritization scheme can be to the thermoplastics simultaneously of many glass-tubes for adopting.

The opening and closing of involutory heating chamber can be passed through cylinder, and mechanical manipulator, or realization such as cam mechanism can adopt prior art.And can be by electrical control, make it to move and send pipe to cooperate, realization automatization thermoplastic with rectangle.

Utility model luminescent lamp bend pipe heating unit, owing to adopt the heating softening device of said structure, make the heating unit structure become more simple, fuse heating than open flame, not only glass-tube is heated evenly, heating is gentle not to have flame to fuse the thermal explosion pipe phenomenon of heating, significantly reduced the breakage of glass-tube in heat-processed, and save energy, and heating is not affected by environment, glass-tube thermoplastic uniformity consistency is good, particularly glass-tube progressively moves forward and is non rotatable roughly linear fashion, thereby can by mechanical manipulator the clamping of thermoplastic glass-tube be held, thereby sagging can further reduce the glass-tube thermoplastic time heating back segment, help the raising of follow-up bend pipe qualification rate, can improve the bend pipe yield rate, qualification rate can reach more than 96%, has reduced the waste of glass-tube bend pipe.Electrically heated has also improved the production work environment in addition, does not have flame to fuse exhaust emission and thermal environment.And this heating softening device can adapt to automated operation, has both reduced labour intensity, has improved production efficiency again.

Optimize embodiment below in conjunction with two, utility model is further understood in exemplary illustration and help, but the embodiment detail only is for utility model is described, do not represent utility model design whole technical schemes down, therefore should not be construed as the total technical scheme of utility model is limited, some are In the view of the technician, not departing from the unsubstantiality of utility model design changes, for example simple change of technical characterictic or replacement to have same or similar technique effect, the novel scope of protecting of all true usefulness.

Description of drawings

Fig. 1 is the utility model first example structure synoptic diagram.

Fig. 2 faces structural representation for Fig. 1.

Fig. 3 faces structural representation for utility model second embodiment.

Embodiment

Embodiment 1: referring to Fig. 1,2, utility model luminescent lamp bend pipe heating unit, but the heating chamber 1.1 and 1.2 that comprises folding is formed involutory heating chamber, in be respectively arranged with nichrome wire (not providing among the figure), involutory heating cavity of resorption dual-side has shelves the alternate groove 4 that adds thermal ampoule 2, cavity is closed substantially when making heating, reduces scattering and disappearing of the interior heat of cavity, and the folding of heating chamber can have cylinder opener or other mechanical mechanisms to realize (not providing among the figure).Involutory heating chamber inner-wall surface posts insulating fire brick, and outside wall surface is covered with thermal insulation layer.The heating chamber both sides respectively have one to carry glass-tube support 3.1 and 3.2, its upper edge face also has with the equidistant glass-tube of heating chamber groove shelves groove 5, this support has vertical telescopic cylinder 6.1 and 6.2 to make oscilaltion respectively, two 6 of vertical telescopic cylinders are individually fixed on the slide block 9.1 and 9.2 that can move forward and backward, slide block is by transversal stretching cylinder 7.1 and the pulling of 7.2 (not shown), on pedestal 10.1 and 10.2, move forward and backward according to directed guide rail 8.

Glass-tube 2 passes through to the pipe unit (not shown), send into putting in the pipe groove 5 on the symmetrical delivery support 3 by propping up, interoperation by cylinder 6 and 7, make the support 3 of shelving glass-tube make the rectangle cyclic motion (motion sequence changes according to the support location) that rises → advance → descend → retreat, simultaneously (can by electrical equipment control) opened and closed to heating chamber, glass-tube 2 is sent in the heating chamber 1 by propping up, thermoplastic progressively moves forward, glass-tube moves to heating chamber and does not hold, can the glass-tube clamping be held by the mechanical manipulator (not shown) of both sides, thereby it is crooked sagging to have prevented that effectively the glass-tube thermoplastic from causing, and enters the bend pipe operation.This course of action cooperates, and speed of advancement etc., can realize by the electronic regulator time variable control, finish automatically.Heating power, heat-up time, rate of heating all can be adjusted according to the heating tube size.

Embodiment 2: referring to Fig. 3, as embodiment 1, the conveying glass-tube support of heating unit both sides fuses, and by a lift cylinder 6 and move forward and backward cylinder 9 and drive, finishes glass-tube by importing/shift out heating chamber.

To those skilled in the art; under utility model design enlightenment; some distortion that can directly derive or associate from this patent disclosure; or the substituting of known technology commonly used in the prior art; and the mutual various combination between feature; for example adopt other can realize lifting and move forward and backward device; replace cylinder also to be fine; the heating chamber opened/closed adopts other mechanisms to realize; nichrome wire can replace with calrod or thermal oil; heating chamber shortens and only heats a glass-tube; omit the heating chamber sidewall and put pipe groove or the like; can both realize and basic identical function of the foregoing description and effect, no longer describe in detail for example one by one, all belong to this patent protection domain.

Claims

1, luminescent lamp bend pipe heating unit, comprise the pipe-conveying device of glass-tube being carried successively heating, with heating makes its remollescent heating unit to the glass-tube curved section, it is characterized in that said pipe-conveying device is alternate and shows the location and shelve the glass-tube support, support is by lifting and move forward and backward the device driving, do the circulation of gap rectangle and move that to send pipe, said heating unit be the involutory heating chamber that is arranged between alternate glass-tube support arranged side by side, electric heating device is arranged in the heating chamber.

2, according to the described luminescent lamp bend pipe of claim 1 heating unit, it is characterized in that lifting and moving forward and backward device is telescopic cylinder.

3,, it is characterized in that involutory heating chamber is by the air cylinder lifting folding according to the described luminescent lamp bend pipe of claim 1 heating unit.

4,, it is characterized in that involutory heating chamber can be to the thermoplastic simultaneously of many glass-tubes according to the described luminescent lamp bend pipe of claim 1 heating unit.

5, according to claim 1,2,3 or 4 described luminescent lamp bend pipe heating units, it is characterized in that involutory heating chamber above and/or under the two side, chamber, have and shelve the equidistant glass-tube of glass-tube with glass-tube support side location and shelve groove.

6,, it is characterized in that in the involutory heating chamber and/or outside wall surface has thermal insulation layer according to the described luminescent lamp bend pipe of claim 5 heating unit.

7,, it is characterized in that shelving the glass-tube support and overlap lifting and move forward and backward the device driving by one according to the described luminescent lamp bend pipe of claim 6 heating unit.