CN101104308A

CN101104308A - Controllable roof bar demoulding device

Info

Publication number: CN101104308A
Application number: CNA2007100704565A
Authority: CN
Inventors: 邱坚峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-01
Filing date: 2007-08-01
Publication date: 2008-01-16

Abstract

Disclosed is a controllable ejector pin extrusion moulding device, comprising an upper moulding board, a lower moulding board which are piled up and are provided with die cavities, and a soleplate. A feeding nozzle is inserted into the moulding boards and a main flow passage at the center of the feeding nozzle is communicated with the die cavities of the moulding boards through a branch flow passage. The moulding boards are provided with ejector pins which are connected to a power source and are face to face with the die cavities. The upper moulding board and the lower moulding board can be piled up in two or more layers; a moulding board under the main flow passage at the center of the feeding nozzle is provided with a lower main flow passage through which the moulding board is communicated with the die cavity of the lower moulding board. The ejector pins can be mounted on the upper moulding board or the lower moulding board with different angles. The invention is dispensed with a demoulding head board and die feet; ejector pins moulding is directly controlled by the power source; the die is small in size and low in cost and the ejector pins can extrude out the molded pieces one by one or together at one time at different angels, so the invention is flexible to use. The bearing forces of the ejector pins are even, therefore the invention will not transfigure after long time use, prolonging the service life of the die.

Description

Controllable roof bar demoulding device

Technical field

The present invention relates to a kind of demoulding device of injection machine mould, particularly a kind ofly carry out demoulding device with power source control push rod.

Prior art

In injection moulding process, the depanning of plastic products all is to finish by the push rod on the mould.At present, more generally be to adopt demoulding top board to carry out depanning, this mould is that a seat board is set on lower bolster, the mould pin is equipped with on the both sides of seat board, demoulding top board is housed on the seat board, and push rod is positioned on the demoulding top board, by the controlling organization control demoulding movement of roof of injection machine, and push rod is ejected, thereby the plastic after the moulding is directly ejected from core by demoulding top board.The mould of this demoulding device is than higher, thick, volume heaviness, die cost costliness, and the ejecting force of injection machine all acts on the mold center position, thereby the push rod discontinuity in the mould, cause easily killing with jogger hole, thus the service life of shortening mould.Each injection moulding can only be made one deck plastic on an aspect, make the injection machine of adapted can not give full play to production capacity.The disclosed patent No. of Chinese patent communique is " ZL95202083.1 ", " stacked injection mold "; be in one pair of mould, to be provided with a plurality of profiles and multilayer die cavity; the template of multilayer die cavity is upper and lower stacked; corresponding to the pairing mould emptier of each die cavity by pull bar, touching lever, push rod or rein in plate etc. and form; so complex structure not only; and the depanning force rate is less, the depanning that can only be suitable for simple shape, shallow chamber book wall product; can not be used for complex-shaped product is carried out depanning, its range of applicability is narrow.

Summary of the invention

The objective of the invention is to defective and deficiency at above-mentioned prior art, for the injection machine manufacturing provides a kind of simple in structure, depanning convenient, flexibly, stressed evenly, not fragile, and can be used for the demoulding device of various complicated shape productions.

The technical solution used in the present invention is for achieving the above object: this controllable roof bar demoulding device comprises and contains mutually stacked cope match-plate pattern, lower bolster and base plate of die cavity, feed nozzle stretches into template, its center sprue communicates with die cavity on the template by runner, the push rod that links to each other with power source is installed on the template, and this push rod is upper and lower relative with die cavity;

Described mutually stacked upper and lower template can be by two-layer or two-layer above the arrangement, and the template below the sprue of feed nozzle center is provided with lower floor's sprue, and communicates with die cavity in the lower template by lower floor's sprue;

Described push rod can be installed on cope match-plate pattern or the lower bolster by angle not.

The push rod that the present invention links to each other with power source can eject product from different perspectives from die cavity, can be suitable for the different shape complex product and produce, and omit demoulding top board and mould pin, make the mould volume light and handy, saved die cost.During production, by the control power source, can make the push rod that is attached thereto one by one gradation plastic is ejected, also can once all the plastic depanning be ejected, use very convenient flexibly, during the push rod motion stressed evenly, long-term use is indeformable, has prolonged the service life of mould.

Description of drawings

Fig. 1 is a monnolithic case schematic diagram of the present invention.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the A-A cutaway view of Fig. 2.

Fig. 4 is the B-B cutaway view of Fig. 2.

Fig. 5 is the C-C cutaway view of Fig. 2.

The specific embodiment

As shown in the figure, this controllable roof bar demoulding device comprises mutual stacked cope match-plate pattern 3, lower bolster 4 and the base plate 7 that contains die cavity 9, and the guide pillar 8 that is fixed on the base plate 7 makes each stacked Template Location mutually.Feed nozzle 1 is inserted into cope match-plate pattern 3 by cover plate 1, and the center of feed nozzle offers the sprue 11 of taper, and communicates with each die cavity 9 by the runner on the template.With die cavity 9 corresponding templates on push rod 10 is installed, and can with different angles push rod be installed on the template according to the position of die cavity.This push rod can be directly be connected with power sources such as the cylinder of injection machine, hydraulic jack, magnetic valves, controlling push rod by the steering maneuver source ejects plastic and carries out depanning, also can control push rod, rein in plate or oblique top etc. by push rod control again plastic is ejected by the steering maneuver source.Upper and lower template stacked mutually among the figure is by two-layer arrangement, stacked again cope match-plate pattern 5 and lower bolster 6 below cope match-plate pattern 3 and lower bolster 4.Also can be by more than two layers, for example three layers or four layers of mutual stacked arrangement.When the multilayer template was set, the template below the feed nozzle center sprue 11 was provided with lower floor's sprue 12, and communicated with the die cavity of lower template by lower floor's sprue.Push rod is installed on lower template, and it is corresponding with the die cavity of lower template.

During injection moulding, earlier with upper and lower template closure, plastics enter sprue 11 from feed nozzle, and inject the mould mold cavity forming.After reaching the dwell time, by injection machine make upper and lower template separately, the push rod that drives control by power source can divide and single plastic is ejected, and perhaps a plurality of plastics ejected simultaneously the once depanning task of finishing.Also can drive the push rod of controlling and plastic be ejected one by one, or a plurality of plastics are ejected simultaneously, finish the depanning task by reining in plate or oblique top etc. by power source.

When the multilayer template is set, can earlier successively separately start push rod simultaneously by power source, the disposable depanning task of finishing all plastics with upper and lower template.Perhaps can be earlier one deck plastic be wherein ejected in advance, and then with another layer plastic eject, can handle flexibly as required.

Claims

1. controllable roof bar demoulding device, it comprises mutual stacked cope match-plate pattern (3), lower bolster (4) and the base plate (7) that contains die cavity (9), feed nozzle (1) stretches into template, the sprue at its center (11) communicates with die cavity (9) on the template by runner, it is characterized in that being equipped with on template the push rod (10) that links to each other with power source, this push rod is upper and lower relative with die cavity (9).

2. controllable roof bar demoulding device according to claim 1, it is characterized in that described stacked mutually cope match-plate pattern and lower bolster can be by two-layer or two-layer above the arrangements, the template of feed nozzle center sprue (11) below is provided with lower floor's sprue (12), and communicates with the die cavity of lower template by lower floor's sprue.

3. controllable roof bar demoulding device according to claim 1 is characterized in that described push rod (10) can be installed on cope match-plate pattern or the lower bolster by angle not.