CN200942579Y

CN200942579Y - Plastic machine nozzle

Info

Publication number: CN200942579Y
Application number: CN 200620104783
Authority: CN
Inventors: 罗亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-15
Filing date: 2006-06-15
Publication date: 2007-09-05
Anticipated expiration: 2016-06-15

Abstract

This is a spray head for the molding machine, comprising a nozzle with the jet orifice at the front end. The said jet orifice is cone-shaped and the size thereof is decreased from outside to inside. The electric heater unit is set in the middle of the spray head, while at least one insulation ring is arranged respectively on the spray head body, which is at both sides of the electric heater unit. The electric heater unit belongs to the close type. The front insulation ring is set at least 5 mm inside the jet orifice. The depth is no less than 1 mm away from the hole edge. The back insulation ring is at the rear part of the spray head. The depth is also no less than 1 mm away from the hole edge. Also, the thermocouple attachment trough is available in the middle of the spray head body. The impurity filtering net trough is set at the end of the spray head body. Two cutter ways are arranged symmetrically at the tail end of the spray head body. This utility model features an appropriate structure and usableness as well as effectively avoids the jet orifice to be jammed by the cold burden, so as to greatly enhance the quality of the plastics.

Description

The molding machine nozzle

Technical field

The utility model relates to a kind of special supporting nozzle that is used for molding machine, belong to a kind of accessory of plastics machinery.

Background technology

Plastics machineries such as injection machine, be to make plastic products by being injected in the particular manufacturing craft moulding behind the molten plastic, wherein need a kind of special nozzle, the front end of this nozzle has spray orifice, spray orifice connects molding machine by passage, thereby the quality quality of plastic products depends on that directly structure of nozzle forms, as the plastics after the fusing when entering nozzle, the quick reduction of Yin Wendu and produce plug-hole phenomenon or the like.

Summary of the invention

The purpose of this utility model is to overcome the deficiency of above-mentioned existence, and a kind of not cold burden head is provided, and is beneficial to thermoregulator molding machine nozzle.The purpose of this utility model is finished by following technical solution, which comprises at least the nozzle body that a front end offers spray orifice, described spray orifice be outer big in little cone shape, in the middle part of nozzle body, be provided with electric heater unit, and on this electric heater unit both sides nozzle body, at least respectively be provided with a heat insulation ring recess.

Described electric heater unit is the enclosed type electric thermic devices, one heat insulation ring recess of its front portion is positioned at spray orifice, i.e. the inside 5mm place at least of spray orifice mouth, and the degree of depth is not less than 1mm apart from the limit, hole, back one heat insulation ring recess is positioned at the rear portion of nozzle body, and its degree of depth also is not less than 1mm apart from the inner via hole limit.

Also be provided with the thermocouple mounting groove on the outer wall of described nozzle body middle part, be provided with contaminant filter net standing groove at the afterbody of nozzle body.

Offering twice on the tail end thread of described nozzle body symmetrically cuts cotter way and clears up groove as impurity.

The utility model belongs to a kind of improvement to prior art, and it has rational in infrastructure, compact, and is easy to use and reliable, can avoid the cold burden plug-hole of spray orifice effectively, can improve the characteristics such as the quality of production of plastic products greatly.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in detail: shown in the accompanying drawing, the utility model comprises that at least a front end offers the nozzle body 2 of spray orifice 1, described spray orifice 1 be outer big in little cone shape, in the middle part of nozzle body 2, be provided with enclosed type electric heater 3, because totally enclosed effect, it can not adhered to by plastic raw materials, thereby can improve heating efficiency, prolong its service life, and advantages such as attractive in appearance, small are arranged.On electric heater unit 3 both sides nozzle bodies 2, respectively be provided with a heat insulation ring recess 4; An anterior heat insulation ring recess 4 is positioned at spray orifice 1 place, i.e. the inwardly about 5mm of spray orifice mouth place, and the degree of depth is apart from Kong Bianyue 1mm; Back one heat insulation ring recess 4 is positioned at the rear portion of nozzle body 2, and its degree of depth is also apart from the about 1mm in inner via hole limit.The setting of two heat insulation ring recess, its effect is heat insulation, prevents that temperature in the nozzle body 2 is to the transmission of mould direction; Spray orifice tapering leading portion forms preceding cold after heat by the effect of heat insulation ring recess; The effect of a heat insulation ring recess then is with last identical.

The utility model also is provided with thermocouple mounting groove 5 on described nozzle body 2 middle part outer walls, carry out temperature controlling or adjustment by thermal detector is installed in it.Afterbody at nozzle body 2 is provided with contaminant filter net standing groove 6; Install on the sealing surface at nozzle and machine and to have processed the circular groove that can place screen pack, its foreign material in can the filtering plastic raw material has guaranteed that spray orifice is difficult for stopping up.

The utility model offers twice symmetrically and cuts cotter way 7 as impurity cleaning groove on the tail end thread of described nozzle body 2.During use, the through hole that enters after the plastic raw materials of fusing filters by the foreign material screen pack in the nozzle body 2 between the two heat insulation ring recess is done short stay, by the adjustment of electric heater unit 3 of sealing, the plastic raw materials of final fusing is penetrated by the taper spray orifice, enters mould.

Claims

1, a kind of molding machine nozzle, which comprises at least the nozzle body that a front end offers spray orifice, it is characterized in that described spray orifice (1) is little cone shape in outer big, in the middle part of nozzle body (2), be provided with electric heater unit (3), and on this electric heater unit (3) both sides nozzle bodies (2), at least respectively be provided with a heat insulation ring recess (4).

2, molding machine nozzle according to claim 1, it is characterized in that described electric heater unit (3) is the enclosed type electric thermic devices, one heat insulation ring recess (4) of its front portion is positioned at spray orifice (1) and locates, it is inwardly 5mm place at least of spray orifice mouth, the degree of depth is not less than 1mm apart from the limit, hole, back one heat insulation ring recess (4) is positioned at the rear portion of nozzle body (2), and its degree of depth also is not less than 1mm apart from the inner via hole limit.

3, molding machine nozzle according to claim 1 and 2 is characterized in that also being provided with thermocouple mounting groove (5) on the outer wall of described nozzle body (2) middle part, is provided with contaminant filter net standing groove (6) at the afterbody of nozzle body (2).

4, molding machine nozzle according to claim 3 is characterized in that offering symmetrically on the tail end thread of described nozzle body (2) twice and cuts cotter way (7) as impurity cleaning groove.