CN2606953Y

CN2606953Y - Non-eccentric align-ree double colour extruding mould for wire and cable

Info

Publication number: CN2606953Y
Application number: CN 03203923
Authority: CN
Inventors: 郑保忠; 郑顺山; 李继涛; 周玉宝; 左厚珍; 郑俊忠; 郑玉朋; 戚景赞
Original assignee: INST OF WIRE CABLE SCI-TECH Co Ltd HEBEI
Current assignee: INST OF WIRE CABLE SCI-TECH Co Ltd HEBEI
Priority date: 2003-02-13
Filing date: 2003-02-13
Publication date: 2004-03-17
Anticipated expiration: 2013-02-13

Abstract

The utility model relates to a non-eccentric align-free double color extruding mould for wire and cable, which comprises a mold core and a mould sleeve matching with each other through a conical surface in between, wherein, material is extruded from the mould core; a channel is similar to the shape of a conical hole with two arc surfaces clipped off; two material circulating holes at an angle of 180 degrees arranged on the mould sleeve at the discharge opening of the mould core form a conical hole through matching with a mould core hole with the back of the conical hole being a round hole; cable core passes through the center of the mould core, while main colorant is input through the material circulating holes and auxiliary colorant is input through a hole on the mould sleeve; finally, wire and cable wrapped in double color are extruded from the round hole of the mould sleeve. Thereby, product produced through the above method possesses smooth shape, clear color separation interface, high electric property and less material consumption.

Description

The non-eccentric align-free double colour extrusion die that electric wire is used

Technical field

The utility model relates to a kind of insertion preformed member, to extruder feed dual-color forming mould tool, the non-eccentric align-free double colour extrusion die that specifically a kind of electric wire is used.

Background technology

In wires and cables industry, because the needs, particularly two-color wire of color separation identification, it makes show particularly important.Present double-colored extrusion modling parcel electric wire mostly is to adopt two-shipper and crowded, and dual-color plastic is finished by two molds respectively and is bonded on the heart yearn.Patent Office of the People's Republic of China discloses a kind of " dual-color plastic extrusion molding mould " (ZL89202790.8), it is a kind of integrally-built dual-color plastic extrusion molding mould, in mould, establish shunting cover and internal mold, two kinds of corresponding material channels that are communicated with are respectively arranged, regulate by internal mold axial displacement adjusting and external mold radial displacement, with the radial width of adjusting die cavity, the concentricity that reaches internal mold and external mold, obtain different color separation structures with the shunting cover of changing different structure.Therefore traditional handicraft is limited by equipment frock, causes that quality is wayward, percent defective is high, it exceeds than monochromatic line and reaches 5～10 percentage points, major-minor vitta line obscure boundary is clear, the outer surface morpheme dimensional accuracy of striped width inequality, finished product is relatively poor, deviation in roundness 〉=3%, and electric property is poor; And the operation displacement of existing patented technology comparatively bothers, causes operating mechanism to set up regulating and controlling mechanism, and the manufacturing of shunting cover making and internal mold, mold also has certain degree of difficulty.

Summary of the invention

The novel purpose of this reality is to overcome states the technical deficiency part, and the non-eccentric align-free double colour extrusion die that provides a kind of electric wire to use.

Task of the present utility model is achieved in that the non-eccentric align-free double colour extrusion die that electric wire is used, form by core rod and die sleeve, it is characterized in that core rod 2 cooperates assembling for conical structure with die sleeve 1, the interior extruded material passage Utah of core rod 2 is like the round taper hole both sides arch surface body of pruning, and is the cross section and is the circle both sides arch surface of pruning; After in core rod 2 is contained in die sleeve 1, on the die sleeve 1 at the discharging opening place of core rod 2, be 180 ° of positions and have two radially feeder channels 3, and it is axially conical, than core rod 2 are the arch surface of having Duoed, fill the core rod 2 tapping channels both sides of pruning, forming the cross section is cylindrical hole 4, notes are mass-tone material to the interior extruded material passage of core rod 2, colorant passage 3 is assisted in radially providing on die sleeve 1, is the auxilliary colorant that sticks at the mass-tone material to core rod 2 discharging openings, makes the finished product of extruding, constitute the mass-tone of cross section, add the bicolor electric wire and cable of mending the auxilliary Cheng Yuan of look institute of arch surface for the parcel conductor thread core.

The utility model advantage compared with prior art is: this mould is installed and is same as common die core rod die sleeve is that cone match is processed well, just the auxilliary look of variable different colours is simple to operate only to need the change die sleeve, easy to use, need not do eccentric the adjustment, employing control mould and die accuracy is just finished the quality assurance to product, not by rule of thumb the operation human factor, significantly reduced percent defective, the mould convenient disassembly is easy to clear up defective material, add auxilliary look for radially materials are few, little of flowpath pressure sticks to one on the surface of mass-tone, play the sign effect, thus only adopt vertical notes bar machine just can, small investment, removable can being engaged on the different extruders.The main frame materials flow is because squeezing action only exists an axial compression power, auxilliary colorant to be dragged forward by the mass-tone materials flow because of pressure is less, thus the colour band that forms, smooth in appearance, diameter width of fringe uniformity, interface is clear, and the electric property height.

Description of drawings

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

Fig. 1 is an overall structure cutaway view of the present utility model.

Fig. 2 is that the A-A of Fig. 1 is to view.

Fig. 3 is the product end surface figure that the utility model is produced.

Embodiment

Referring to Fig. 1,2, the non-eccentric align-free double colour extrusion die 1 that a kind of electric wire is used, the core rod 2 that is mated is housed in its coniform hole, the endoporus extruded material passage of core rod 2, be the round taper hole both sides arch surface body of pruning, conductor core wire (also can be the conductor core wire of existing insulating barrier) is housed on the axis, is that bellmouth lacks injection mass-tone material in the arch surface by vertical notes bar machine to its cross section, when its part is synchronized to core rod 2 discharging openings with conductor, the auxilliary colorant of extruding by the radially feed runner 3 of die sleeve 1, referring to Fig. 3, it is bonded on the mass-tone material when being dragged by the mass-tone materials flow, be subjected to the shape restriction of die sleeve 1 and conductor surrounded is become, profile has been the bicolor electric wire and cable of circular cross section.

Claims

1, the non-eccentric align-free double colour extrusion die that a kind of electric wire is used, form by core rod and die sleeve, it is characterized in that core rod (2) is that conical structure cooperates assembling with die sleeve (1), the interior extruded material passage Utah of core rod (2) is like the taper shape both sides arch surface body of pruning, be the cross section and be the circle both sides arch surface of pruning, after in core rod (2) is contained in die sleeve (1), on the die sleeve (1) at the discharging opening place of core rod (2), be 180 ° of positions and have two radially feeder channels (3), and it is axially conical, than core rod (2) is the arch surface of having Duoed, fill core rod (2) tapping channel and prune that to form the cross section be cylindrical hole (4) on both sides, notes are the mass-tone material to the interior extruded material passage of core rod (2), colorant passage (3) is assisted in radially providing on die sleeve (1), is the auxilliary colorant that sticks at the mass-tone material to core rod (2) discharging opening, makes the finished product of extruding, constitute the mass-tone of cross section, add the bicolor electric wire and cable of mending the auxilliary Cheng Yuan of look institute of arch surface for the parcel conductor thread core.