CN2489951Y

CN2489951Y - Back co-extrusion mould for making sealing adhesive strip inserted in abnormal section bar of plastic door-window

Info

Publication number: CN2489951Y
Application number: CN01228667U
Authority: CN
Inventors: 王志斌; 苑克立
Original assignee: BAODING DEMASI NEW BUILDING MATERIAL Co Ltd
Current assignee: Baoding Bosoar New Type Building Material Co., Ltd.
Priority date: 2001-06-28
Filing date: 2001-06-28
Publication date: 2002-05-08
Anticipated expiration: 2011-06-28

Abstract

The utility model discloses a back co-extrusion mould for making sealing adhesive strip inserted in abnormal section bar of plastic door-window, including a specific mould, an electric heating panel and a thermocouple, etc. The utility model is characterized in that the upper part of the flowing path of the back co-extrusion mould is provided with a T-shaped bump; the combination of the bumps and the T-shaped slot allows the abnormal section bar to be produced; the adhesive strip need not adhere with the abnormal section bar; the adhesive strip is directly embedded into the T-shaped slot and thus the connection quality is guaranteed; the production technology is simplified and the cost of production is reduced, and the technology process is easy to be handled and controlled.

Description

A kind of back co-extruding mould of making the plastic door and windows profile sealing joint strip

The utility model relates to a kind of back co-extruding mould of making the plastic door and windows profile sealing joint strip.

The sealing of plastic door-window relies on frame, fan, glass, rubber and plastic adhesive tape to realize mostly.Adhesive tape combines with door and window profile material, normally when door and window is made, by manually adhesive tape being embedded in the T-slot of profile shapes with instrument, but because the big contractility and the frictional force of adhesive tape, cause adhesive tape and section bar adhesion in the longitudinal direction inhomogeneous, easily shrink shorten, crimping or bent wrinkle, influence sealing effectiveness, and production efficiency is also lower.

A kind of back co-extruding mould that is referred to as the plastic door and windows profile of welded type is arranged at present, mainly be by the adhesive tape mould and be fixed on its outside electric boiling plate, insert the compositions such as thermocouple of mold, it is after the profile shapes fused materials is by the moulding of extruder die head, through doing typing, wet setting, will enter hauling machine, fixed length cutting, before the packing, once more profile shapes and adhesive tape will be heated to little state that melts by binding site with electric heater, the adhesive tape material of fusion is extruded on the T-slot edge of profile shapes by co-extruding mould by co-extrusion machine, makes its bonding mould.With the profile shapes of co-extruding mould production after this, the bonding intensity of adhesive tape and profile shapes is difficult for guaranteeing, and technique controlling difficulty is big, to adhesive tape material adhesive requirement height, and when reclaiming waste material, adhesive tape and profile shapes are not easily separated, some material will be discarded, and causes unnecessary waste.

The purpose of this utility model is for overcoming the deficiency of above-mentioned prior art, provides a kind of make between profile shapes and the adhesive tape need not be bonding and combine the back co-extruding mould that reliable, production process is easy to the making plastic door and windows profile sealing joint strip controlling, be convenient to operate.

For achieving the above object, technical solution of the present utility model is: a kind of back co-extruding mould of making the plastic door and windows profile sealing joint strip, it comprises the mold of forming and tightening together with screw by forward and backward two, be fixed on the electric boiling plate of mold outside, insert the thermocouple of mold; Wherein, on forward and backward two faying face of mold, have threaded charging aperture that links to each other with co-extrusion machine and runner, the adhesive tape molding runners that is connected with runner is arranged on the back piece, the exit of molding runners is positioned at the top of piece back, back, it is characterized in that having on described molding runners a cross section that coincide with the profile shapes T-slot is the projection of T shape, the rear portion of T shape piece is a cantilever, and the thickness of cantilever is less than the degree of depth of T-slot upper slot.

The course of work of the present utility model is: the fused materials of profile shapes is after the moulding of extruder die head, through doing typing, wet setting, will enter hauling machine, fixed length cutting, before the packing, the T shape piece that profile shapes moves to this back co-extruding mould backward enters in the T-slot of profile shapes, by co-extrusion machine with the fused materials of adhesive tape by this back co-extruding mould directly inject by in T shape piece cantilever and the space that T-slot surrounds and with molding runners that T-slot communicates in, the space that the cantilever of T shape piece and T-slot surround forms the shaped upper part of adhesive tape, and molding runners forms the lower shape of adhesive tape.

The utility model compared with prior art has the following advantages:

Because the sealing joint strip top that goes out with this Mold Making is directly embedded in the T-slot of profile shapes, so to the cementability no requirement (NR) of adhesive tape material, and section bar combines evenly, reliable and stable with adhesive tape, can not produce contraction, crimping or song and wrinkle etc.; And do not need electricity consumption hot blast pre-blowing section bar, saved the electric heating wind element of expensive rapid wear,, reduce cost so can save electric energy; And the adhesive tape extrusion temperature is low, and product deformation is little, is difficult for decomposing; Expressing technique is controlled easily, operation, easy to maintenance; Because adhesive tape is to be embedded in the interior adhesive tape of profile shapes T-slot easily to separate with section bar, so can all reclaim stub bar and waste and old section bar.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is a perspective view of the present utility model.

Fig. 2 is the structural representation after mold is cut open along the A-A direction among Fig. 1.

Fig. 3 is that profile shapes moves to T shape piece and enters in the T-slot in the production process, forms the schematic diagram of sealing joint strip.

As shown in Figure 1 and Figure 2, the utility model is made up of preceding 1 and the back mold formed of piece 2, the thermocouple 4 that is fixed on the outer electric boiling plate 3 of mold, the insertion mold; Have screw hole 9 on preceding piece 1, the back piece 2, two of front and back are tightened together by screw; On two faying face, have the threaded adhesive tape molten material feeding mouth 6 that links to each other with co-extrusion machine, having the cross section that is connected with charging aperture 6 on the preceding piece 1 is half round runner 7, have the adhesive tape molding runners 8 that is connected with runner 7 ends on the back piece 2, it is the projection 5 of T shape that one cross section that coincide with the profile shapes T-slot is arranged above the molding runners 8, T shape piece 5 front portions are wedge shape, so that importing section bar, T shape piece 5 rear portions are cantilever, cantilever thickness is less than the degree of depth of profile shapes T-slot upper slot, be that T shape piece cantilever cooperates with the profile shapes T-slot, cantilever lower surface and T-slot leave the space, the space forms the first half of adhesive tape thus, and molding runners 8 communicates with the T-slot mouth and forms the adhesive tape Lower Half; T shape piece plays the positioning action to profile shapes simultaneously; Electric boiling plate 3 is used for keeping the temperature of fused materials, the temperature of thermocouple 4 supervision molding.

11 are profile shapes, the 12nd among Fig. 3, and T-slot, 13 is adhesive tape.

Claims

1, a kind of back co-extruding mould of making the plastic door and windows profile sealing joint strip, it comprises the mold of being formed and being tightened together with screw by forward and backward two (1), (2), be fixed on the electric boiling plate (3) of mold outside, insert the thermocouple (4) of mold; Wherein, on forward and backward two faying face of mold, have threaded charging aperture that links to each other with co-extrusion machine (6) and runner (7), the adhesive tape molding runners (8) that is connected with runner is arranged on the back piece, the exit of molding runners (8) is positioned at the top of piece back, back, it is characterized in that having on described molding runners (8) cross section that coincide with the profile shapes T-slot is the projection (5) of T shape, the rear portion of T shape piece (5) is a cantilever, and the thickness of cantilever is less than the degree of depth of T-slot upper slot.

2, the back co-extruding mould of making plastic door and windows profile sealing joint strip according to claim 1 is characterized in that T shape piece (5) front portion on described adhesive tape shaping mould specifically is wedge shape.