CN2143201Y

CN2143201Y - Closed electric resistance wire heating head

Info

Publication number: CN2143201Y
Application number: CN 92244735
Authority: CN
Inventors: 鲍文通; 黄平; 许兰阁; 杨肇; 刘纬
Original assignee: TIANJIN FOOD PACKING MACHINERY INST
Current assignee: TIANJIN FOOD PACKING MACHINERY INST
Priority date: 1992-12-26
Filing date: 1992-12-26
Publication date: 1993-10-06
Anticipated expiration: 2002-12-26

Abstract

The utility model relates to a closed electric resistance wire heating head for the thermal shrinkage packer, comprising a heating head body and an electric heating wire. The electric heating wire is in closed shape and the upper bend is provided with a plurality of upward returning bends as the hanging centers; the hanging centers are arranged in the through hole of the heating head body and fixed and hung by an alloy wire. The utility model can finish sealing and cutting once of the ring of the items needed heat sealing and packaging; the temperature of the electric heating wire of the whole ring is uniform to ensure good cutting and sealing effect; the utility model is suitable for heat sealing mouth of any closed shapes, such as circular, square, rectangle, polygon and other simple and complex shapes.

Description

Closed electric resistance wire heating head

The utility model relates to a kind of parts of thermal shrinking package machine, especially a kind of closed shape heating wire heat seal head of adhesion of plastic films.

Thermal shrinking package machine is by heating wire with the two layers of plastic thin films heat seal together, and itself and unnecessary rim charge are broken away from, thereby finish the packing envelope cut of material is done, so the heat seal head at heating wire place is the vitals of thermal shrinking package machine.In general thermal shrinking package machine, heating wire is the bottom that is connected a heat seal body, and a heat seal body is fixed on again on the heat seal head bracket of wrapping machine, and heating wire setting (being the orthogonal projection of heating wire) mostly is " one " font and " L " shape.Wherein, " one " font can be indulged envelope or horizontal sealing to film, is suitable for film is carried out the sealing operation of a direction; " L " though shape can be sealed the film of cutting both direction simultaneously, for continuous material with to reclaim the tracting film clout very inconvenient, and with the mode of existing end tractive heating wire, all need seal fixing of the closed shape heating wire cut around also can't realizing.

The purpose of this utility model, be propose a kind of with the fixing closed shape heating wire heat seal head of heating wire of hanging method, to overcome weak point of the prior art.

The purpose of this utility model is to realize like this.

Closed shape heating wire heat seal head is made up of the heat seal body 3 and the heating wire 2 that are fixed on the heat seal head bracket 4.Wherein, heating wire is set to closed shape.Be provided with a plurality of suspension centres 9 on whole closed shape heating wire, suspension centre is that heating wire is upwards bent 90 °, returns that the original place forms again.Suspension centre is loaded in the interior through hole 7 of a heat seal body correspondence position, and fixing with heat-resistant alloy wire 8 liftings.Closed shape heating wire adopts two half cycles parallel connections to connect with power supply

Below in conjunction with embodiment and accompanying drawing, the utility model is described in detail.

Fig. 1 heat seal head master looks scheme drawing;

Fig. 2 heat seal elevational schematic view;

Fig. 3 heat seal head launches scheme drawing.

Various involution shapes such as the heating wire in the closed shape heating wire heat seal head can be rounded, square, oblong or polygon are provided with.What embodiment provided is octagon, and a heat seal body also is corresponding shape.

For strengthening the heat-resisting life-span of heat seal head, in the through hole in a heat seal body, all be set with a porcelain bushing 10.

Use the utility model packaged articles, the heat seal head can once be wrapped in film 1 on the packed article 5, and clout breaks away from simultaneously, can be by traction recovery continuously.

Adopt lifting mode of the present utility model, lifting only limits to a section in the heat seal body opening with the heat radiation influence of alloy silk, thereby the temperature high conformity of heating wire active section, thereby can guarantee that good envelope cuts effect, be suitable for sealing middle use any simple or complicated closed shape.

Claims

1, a kind of closed shape heating wire heat seal head is made up of the heat seal body, the heating wire that are fixed on the heat seal head bracket, the closed shape that is set to that is characterised in that heating wire of the present utility model; Be provided with a plurality of suspension centres on whole closed shape heating wire, suspension centre is with heating wire and upwards bends 90 °, returns that the original place forms again, and suspension centre is loaded in the through hole in the heat seal body correspondence position, and fixing with the heat-resistant alloy wire lifting; Closed shape heating wire adopts two semicircles parallel connections to be connected with power supply.

2,, it is characterized in that closed shape heating wire can be rounded, square, oblong or polygon setting according to the described heat seal head of claim 1.

3,, it is characterized in that all being set with in the through hole in the heat seal body porcelain bushing according to claim 1 or 2 described heat seal heads.