CN104325609A

CN104325609A - Die inner side pouring gate aggregate automatic shearing apparatus

Info

Publication number: CN104325609A
Application number: CN201410446141.6A
Authority: CN
Inventors: 宋满仓; 于文强; 常泓; 刘莹; 刘冲; 赵丹阳
Original assignee: Dalian University of Technology
Current assignee: Dalian University of Technology
Priority date: 2014-09-03
Filing date: 2014-09-03
Publication date: 2015-02-04

Abstract

A die inner side pouring gate aggregate automatic shearing apparatus belongs to the field of injection molding die designing and making, and is composed of a pouring gate aggregate cutting knife, a cutting knife push plate and a cylinder connector. The pouring gate aggregate cutting knife adopts an aggregate cutting and accommodating space punching integration design, the blade of the cutting knife is positioned in a cutter body, the width of the two sides of the blade is 1.5-5mm, the inclination angle of the cutting edge is 30-75DEG, and the pouring gate aggregate cutting knife cooperates with a pouring system insert block to form a pouring system; the cutting knife push plate adopts a stepped design, and the steps limit the stroke of the push plate in the punching process in order to indirectly limit the stroke of the pouring gate aggregate cutting knife; and the pouring gate aggregate cutting knife and the cutting knife push plate are connected through a T-shaped slot with an angle of 8-17DEG in order to realize self locking. Pouring gate aggregate cutting is carried out after injection dwelling. Pouring gate aggregate cutting power is from compressed air. The apparatus can complete the pouring gate aggregate cutting in the die before die opening one time, so the production cost is effectively reduced, the productivity is improved, and the product quality is improved.

Description

A kind of in-mould edge gate solidifying material automatic-shearing device

Technical field

The invention belongs to Design and Manufacture of Plastic Injection Mould field, relate to a kind of in-mould edge gate solidifying material automatic-shearing device.

Background technology

When using side gate uiform section to amass larger cast gate moulded plastic products, because the solidifying material of shaping rear cast gate connects together with goods, in knockout course, the two can not be separated automatically, needs the cast gate of cutting of artificial or peripheral hardware to coagulate materials device and carry out subsequent treatment; Which not only adds workload, reduce production efficiency, and this cast gate solidifying material cut-out mode is easy to cause damage to goods and affect product quality.For this reason, the mode that automatic shearing cast gate in mould can be adopted to coagulate material solves the problems referred to above.

At present, cut after the mode that in mould, automatic shearing cast gate coagulates material is mainly divided into die sinking with die sinking before cut two kinds of manner of execution.Cut after die sinking easily to produce goods and pull, cause cast gate to coagulate material and not easily cut off, and goods are yielding.Cut before die sinking and also can be divided into two kinds, a kind of is that extruding by coagulating material to cast gate makes it be separated with goods, but due to melt self decrement limited, be suitable only for the film-form cast gate that sectional area is less; Another kind coagulates material by cutting knife to cast gate to carry out die-cut, but this needs along the die-cut direction of cutting knife when die-cut, mould will have tolerant space to cut off the solidifying material of cast gate, corresponding mechanism must be manufactured and designed in mould for this reason and with cutting knife synchronization action, mechanism design manufacture assembling is comparatively complicated and need to control accurately.

Summary of the invention

The invention provides a kind of in-mould edge gate solidifying material automatic-shearing device, be mainly used in the injection mold that the gate areas such as side gate are larger, utilize this device in die sinking front mould, the cut-out that cast gate coagulates material can be completed by one-off.

Technical scheme of the present invention is as follows:

A kind of in-mould edge gate solidifying material automatic-shearing device, primarily of compositions such as cast gate solidifying material cutting knife, cutting knife push pedal and cylinder connectors.

Cast gate solidifying material cutting knife adopts the solidifying material of cut-out to design with die-cut tolerant space integration, cutting knife blade is positioned at cutter hub inside, an enclosure space is surrounded with the structure producing die-cut tolerant space, and the width of blade both sides is 1.5mm ~ 5mm, the inclination angle of cutting knife cutting edge is 30 ° ~ 75 °, the solidifying material of the cast gate of connection goods side is cut off with goods and is separated.

Cutting knife push pedal is mainly used in the transmission of die-cut action power, and adopt stepped designs, ladder carries out spacing to the stroke of push pedal in blanking process, indirectly coagulates cast gate and expects that the stroke of cutting knife carries out spacing.Coagulate in cutting knife push pedal and cast gate and expect that the junction of cutting knife is provided with T-slot, the angle between T-slot and horizontal plane is 8 ° ~ 17 °, can realize self-locking; Cast gate coagulates the die-cut action that the horizontal slip in T-slot of material cutting knife is converted into vertical direction.

Cast gate coagulates material cutting knife to cut off the action that cast gate coagulates material and carries out after injection pressurize terminates.The power resources that cast gate coagulates material cut-out are compressed air.

Effect of the present invention and benefit are: the automatic gate cutting provided coagulates materials device and adopts overall structure, and structure is simple, compact, easily realizes modularization, highly versatile, is applicable to all kinds of sidegated injection mold tools that gate area is larger.The contact surface that cast gate coagulates material cutting knife and cutting knife push pedal is an inclined plane, and inclination angle can realize self-locking in certain scope, prevents injection pressure in mold filling process from causing greatly cast gate solidifying material cutting knife to produce and slides.The action that cut-out cast gate coagulates material is carried out after injection pressurize terminates, and can effectively avoid the restriction of moulding material kind and the circumscribed cast gate of mould to coagulate the destruction of material to goods.The power of die-cut action is compressed air, convenient sources, clean environment firendly.Apply this to cut gating apparatus and effectively can reduce production cost, boost productivity, improve product quality.

Accompanying drawing explanation

Fig. 1 is the injection mold schematic diagram coagulating materials device with automatic gate cutting.

Fig. 2 is that automatic gate cutting coagulates materials device front view.

Fig. 3 is running gate system partial enlarged drawing.

Fig. 4 is cast gate solidifying material cutting knife front view.

In figure: 1 sprue bush; 2-1 cast gate solidifying material cutting knife; The push pedal of 2-2 cutting knife; 2-3 cylinder connector; 3 cavity block; 4 sprue pullers; 5 push rods; 6 moving platens; 7 micro-fluidic chips; 8 running gate system inserts; 9 solid plates.

Specific implementation method

Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.

Be used to the mould of the shaping micro-fluidic chip 7 with micro-structural shown in Fig. 1, automatic gate cutting coagulates materials device 2 and is arranged in solid plate 9.Cut cast gate to coagulate materials device 2 and be made up of cast gate solidifying material cutting knife 2-1, cutting knife push pedal 2-2 and cylinder connector 2-3, cutting knife push pedal 2-2 expects to be connected by T-slot between cutting knife 2-1 with cast gate is solidifying, and connection angle is 10 ° and realizes backhaul self-locking, as shown in Figure 2.Cast gate solidifying material cutting knife 2-1 runs through solid plate 9 and running gate system insert 8, and forms a complete runner system together with running gate system insert 8, as shown in Figure 3.Cylinder connector 2-3 is connected with cylinder, coagulates material action provide power resources for completing automatic gate cutting.Cylinder action and injector penetrate action and interlock.Cast gate solidifying material cutting knife 2-1 adopts unitary design, and blade is positioned at the inside of cutter hub, and the width in blade both sides is 2.5mm, and in order to ensure overall intensity, the inclination angle of knife edge part is 45 °, can cut off cast gate rapidly, as shown in Figure 4.

After mould matched moulds, plastic melt under injection pressure effect, the shaping micro-fluidic chip 7 of cavity space surrounded via sprue bush 1 injection type cavity insert 3 and solid plate 9.After pressurize terminates, cylinder accepts the signalizing activity that injector sends, by cylinder connector 2-3 pull cutting knife push pedal 2-2 move to right (shown in Fig. 2 position) drive cast gate solidifying material cutting knife 2-1 moves and cut off the solidifying material of cast gate.After cooling terminates, mould die sinking, cast gate coagulates material under the effect of sprue puller 4, stays dynamic model side, and cast gate solidifying material cutting knife 2-1 and cast gate coagulate material and be separated stay cover half side completely.After die sinking terminates, push rod 5 and sprue puller 4 release micro-fluidic chip 7 and the solidifying material of cast gate respectively.After matched moulds, cylinder promotion cast gate coagulates expects that cutting knife 2-1 moves downwardly to its stepped land and contacts with the shoulder in solid plate 9, reaches the limit of position, again forms running gate system with running gate system insert 8, enter next working cycles.

Claims

1. an in-mould edge gate solidifying material automatic-shearing device, is arranged in solid plate; It is characterized in that: comprise cast gate solidifying material cutting knife, cutting knife push pedal and cylinder connector;

Cast gate solidifying material cutting knife adopts the solidifying material of cut-out to design with die-cut tolerant space integration, cutting knife blade is positioned at cutter hub inside, surround an enclosure space with the structure producing die-cut tolerant space, and the width of blade both sides is 1.5mm ~ 5mm, the inclination angle of cutting knife cutting edge is 30 ° ~ 75 °;

Cutting knife push pedal is mainly used in the transmission of die-cut action power, and adopt stepped designs, ladder carries out spacing to the stroke of push pedal in blanking process, indirectly coagulates cast gate and expects that the stroke of cutting knife carries out spacing;

Cutting knife push pedal and cast gate coagulate expects that the junction of cutting knife arranges T-slot, and the angle between T-slot and horizontal plane is 8 ° ~ 17 °;

Cast gate coagulates material cutting knife to cut off the action that cast gate coagulates material and carries out after injection pressurize terminates; The power resources that cast gate coagulates material cut-out are compressed air.