CN205767306U - The mould of automatic shearing cast gate in a kind of mould - Google Patents

Abstract

This utility model provides the mould of automatic shearing cast gate in a kind of mould, belongs to field of mechanical technique.The problem it solving existing injection mold quality of item difference.The mould of Ben Monei automatic shearing cast gate includes: lower bolster, and fastening on lower bolster has cope match-plate pattern, and cope match-plate pattern and lower bolster surround formation sub-runner and die cavity, and sub-runner is by cast gate and die cavity UNICOM；Cut cells, including fixing seat, oil cylinder and cutting knife, cutting knife includes head, the afterbody being connected as a single entity, the cylindrical setting of afterbody, head is arranged in the form of sheets and head two sides arc-shaped transition is to the circumferential lateral surface of afterbody, and apical head has a blade and blade side is provided with work surface, and work surface is suitable with the shape of die cavity inwall, when cutting knife makes blade act on the junction of cast gate and die cavity and be isolated with cast gate by die cavity towards cast gate motion, work surface is resisted against on die cavity inwall.This utility model has the advantage that work efficiency is high, quality of item is good.

Description

The mould of automatic shearing cast gate in a kind of mould

Technical field

This utility model belongs to field of mechanical technique, relates to the mould of automatic shearing cast gate in a kind of mould, particularly a kind of The injection mold of automatic shearing cast gate in mould.

Background technology

Although the structure of injection mold is due to plastics variety performance, the shape and structure of plastic and the type of injector Deng difference and ever-changing, but its basic structure is consistent, mainly by running gate system, thermoregulating system, forming part and knot Structure part forms.And running gate system and forming part are contact portions direct with plastics, change with goods, be in injection mold Complexity, change maximum, it is desirable to processing fineness and the highest part of precision.

Running gate system, also known as flow passage system, is one group of feeding-passage that plastic melt is guided into die cavity by nozzle of injector, It is directly connected to Forming Quality and the production efficiency of plastic, is generally made up of sprue, sub-runner, cast gate and cold slug well. Wherein cast gate it be to turn on the passage of sprue (or sub-runner) and die cavity, its shape and size on quality of item affect very Greatly, cast gate obtains sectional area can be equal with sprue (or sub-runner), but generally all reduces, and therefore cast gate is whole runner The long-pending minimum part in system middle section.

In existing mould, the plastic melt in running gate system is nearly all molding together with goods, finally pushes away at mould Go out break away from moulds under the effect of mechanism, need for further processing to the article after these molding in outside so afterwards, Remove the part of institute's molding in running gate system, work relatively complicated and easily damage goods, wasting time and energy, inefficiency.

In sum, for solving the deficiency on existing injection mold structure, need design a kind of work efficiency height, goods The mould of automatic shearing cast gate in the measured mould of matter.

Summary of the invention

The purpose of this utility model is to there are the problems referred to above for existing technology, it is proposed that a kind of work efficiency is high, system The mould of automatic shearing cast gate in the measured mould of quality.

The purpose of this utility model can be realized by following technical proposal: the mould of automatic shearing cast gate in a kind of mould, Including:

Lower bolster, fastens on lower bolster and has cope match-plate pattern, and described cope match-plate pattern and lower bolster surround formation sub-runner and confession The die cavity of product molding, described sub-runner, by cast gate and die cavity UNICOM, is provided through and die cavity UNICOM in lower bolster Some first push rods and some second push rods with sub-runner UNICOM；

Cut cells, including the fixing seat being installed in lower bolster, the oil cylinder being located in fixing seat and with oil cylinder top Going out the cutting knife that end is connected, described cutting knife includes head, the afterbody being connected as a single entity, the cylindrical setting of described afterbody, described head Arranging in the form of sheets and head two sides arc-shaped transition is to the circumferential lateral surface of afterbody, apical head has a blade and blade side sets Being equipped with work surface, described work surface is suitable with the shape of die cavity inwall, waters when cutting knife makes blade act on towards cast gate motion Mouthful with the junction of die cavity and by die cavity with cast gate isolation time, work surface is resisted against on die cavity inwall.

In above-mentioned a kind of mould in the mould of automatic shearing cast gate, in lower bolster, it is provided with the type for moulded products Pellet, described sub-runner part is positioned at core block and described head is located in core block.

In above-mentioned a kind of mould in the mould of automatic shearing cast gate, it is additionally provided with in lower bolster for accepting oil outer The oil pipe of liquid, described oil pipe sequentially pass through lower bolster, fixing seat and with oil cylinder UNICOM.

Compared with prior art, this utility model reasonable in design, it is provided with cut cells at mould inside, in injection Cast gate can be cut off, it is not necessary to outside mould, again remove cast gate so that the article construction that the final demoulding obtains is complete, surface during molding Smooth, quality of item well improves again work efficiency simultaneously.

Accompanying drawing explanation

Fig. 1 is the phantom of this utility model one preferred embodiment.

Fig. 2 is the part-structure schematic diagram of this utility model one preferred embodiment.

Fig. 3 is the phantom of Fig. 2.

Fig. 4 is the partial enlarged drawing of Fig. 3.

Fig. 5 is the structural representation of cut cells in this utility model one preferred embodiment.

In figure, 11, cope match-plate pattern；111, the first push rod；112, the second push rod；12, lower bolster；13, sub-runner；20, cast gate； 30, fixing seat；40, oil cylinder；50, cutting knife；51, head；511, blade；512, work surface；52, afterbody；60, core block；70, oil Pipe；80, goods.

Detailed description of the invention

The following is specific embodiment of the utility model and combine accompanying drawing, the technical solution of the utility model is made further Description, but this utility model is not limited to these embodiments.

As shown in Figures 1 to 5, the mould of Ben Monei automatic shearing cast gate includes:

Lower bolster 12, fastens on lower bolster 12 and has cope match-plate pattern 11, and cope match-plate pattern 11 and lower bolster 12 surround formation sub-runner 13 and for the die cavity (not shown) of goods 80 molding, sub-runner 13 is by cast gate 20 and die cavity UNICOM, at lower bolster 12 Inside it is provided through multiple first push rods 111 with die cavity UNICOM and multiple second push rods 112 with sub-runner 13 UNICOM；

Cut cells, the oil cylinder 40 including the fixing seat 30 being installed in lower bolster 12, being located in fixing seat 30 and Ejecting, with oil cylinder 40, the cutting knife 50 that end is connected, cutting knife 50 includes head 51, the afterbody 52 being connected as a single entity, and afterbody 52 is cylindrical to be set Putting, head 51 is arranged in the form of sheets and head 51 two sides arc-shaped transition is to the circumferential lateral surface of afterbody 52, and head 51 top has one Blade 511 and blade 511 side are provided with work surface 512, and work surface 512 is suitable with the shape of die cavity inwall, when cutting knife 50 Towards cast gate 20 motion make blade 511 act on the junction of cast gate 20 and die cavity and die cavity and cast gate 20 be isolated time, work Face 512 is resisted against on die cavity inwall.

In existing mold, the plastic melt in running gate system is nearly all molding together with goods 80, finally pushes away at mould Go out break away from moulds under the effect of mechanism, need for further processing to the article after these molding in outside so afterwards, Remove the part of institute's molding in running gate system, work relatively complicated, waste time and energy, inefficiency；In addition, also compare Easily damage goods 80, can leave a trace on goods 80 surface, affect the overall aesthetics of goods 80.

To this end, this utility model devises the mould of automatic shearing cast gate in a kind of mould, it is provided with shearing at mould inside Unit, drives cutting knife 50 to shear cast gate 20 by oil cylinder 40, can cut off cast gate 20 when injection mo(u)lding, it is not necessary at mould Outer the most again remove cast gate 20 so that goods 80 structural integrity that the final demoulding obtains, smooth surface, goods 80 mass is well the most again Improve work efficiency.

The quantity of cut cells should be corresponding with the quantity of cast gate 20, and in the present embodiment, mould preferably employs mould two chamber Structure carries out the molding of goods 80, and therefore the quantity of cast gate 20 is set to two, and the quantity of corresponding cut cells is also two. During actual production design mould, in the case of mould self structure allows, shearing can be set according to concrete die cavity quantity Unit, can be one, it is also possible to be multiple, do not limit in the present embodiment.

It is noted that cast gate 20 is in being horizontally disposed with in the present embodiment, therefore cutting knife 50 is vertically arranged in lower bolster 12 In, for other cast gates 20 in be vertically arranged or be obliquely installed, can correspondingly change the direction of cutting knife 50, make cutting knife 50 with Cast gate 20 is mutually perpendicular to, more efficiently shearing pouring gate 20.

The installation of oil cylinder 40 is easy in the setting of fixing seat 30, has further facilitated the installation of cutting knife 50, and oil cylinder 40 controls to cut Cutter 50 shearing pouring gate 20 straight up, use oil cylinder 40 as drive mechanism, stable action, good working effect.

The cylindrical setting of afterbody 52 of cutting knife 50 is easy to be connected with oil cylinder 40, strengthens the self-strength of cutting knife 50 simultaneously； Head 51 arranges in the form of sheets and conveniently carries out shearing work, the circumferential lateral surface of head 51 two sides arc-shaped transition to afterbody 52, so Setting make cutting knife 50 stability in the large good, intensity is high, it is to avoid cutting knife 50 damages.

Wherein, the head 51 of cutting knife 50 is less with the vertically distance of cast gate 20, when plastic melt is full of die cavity, and head 51 Melt it is full of, when cutting knife 50 moves straight up, between head 51 and cast gate 20 as in the space between cast gate 20 Melt unnecessary in space can disperse away along cast gate 20, sub-runner 13.Therefore the distance between head 51 and cast gate 20 is to the greatest extent Measure little, it is simple to unnecessary melt dispersion, make the work surface 512 of head 51 fit with die cavity inwall.

Die cavity inwall herein i.e. refers to the surface after goods 80 molding at cast gate 20, and work surface 512 is resisted against type The surface laminating of work surface 512 and goods 80 is referred on cavity wall.

Work surface 512 is suitable with the shape of die cavity inwall, i.e. work surface 512 is suitable with the shape on goods 80 surface, The surfacing being conducive to the goods 80 of final molding is smooth, and overall aesthetics is good.The setting of blade 511 is mainly used for watering Mouth 20 thoroughly cuts off with die cavity, finally gives the goods 80 of independent completion.

Above-mentioned first push rod 111 and the second push rod 112 are arranged, can be by goods 80 and in running gate system when the demoulding The part of the interior molding demoulding together, it is to avoid in running gate system, the Partial Blocking of molding is in running gate system, thus is smoothed out down Single injection-molded.

Further, being provided with the core block 60 for moulded products 80 in lower bolster 12, sub-runner 13 part is positioned at Core block 60 is interior and head 51 is located in core block 60.

In the present embodiment, due to goods 80 complicated structure, core block 60 arrange on the one hand can moulded products 80, Manufacture, change facility, after life-time service, directly change core block 60, it is not necessary to change lower bolster 12 and also be able to fall simultaneously The manufacture difficulty of low lower bolster 12；On the other hand the head 51 of cutting knife 50 can be protected in being located in core block 60 by head 51 Protect, it is to avoid cutting knife 50 damages.

Preferably, being additionally provided with the oil pipe 70 for accepting outside fluid in lower bolster 12, oil pipe 70 sequentially passes through down Template 12, fixing seat 30 and with oil cylinder 40 UNICOM.Outside fluid is passed sequentially through lower bolster 12, fixing seat 30 by arranging of oil pipe 70 Finally enter in oil cylinder 40, thus control the up and down motion of cutting knife 50, carry out shearing work.

The mould structure design of Ben Monei automatic shearing cast gate is reasonable, is provided with cut cells, when injection mo(u)lding Cut off cast gate 20, it is not necessary to outside mould, again remove cast gate 20 so that goods 80 structure independent completion that the final demoulding obtains, surface Smooth, goods 80 mass is good and work efficiency high, is worth being widely used.

Specific embodiment described herein is only to this utility model spirit explanation for example.This utility model institute Belong to those skilled in the art described specific embodiment to make various amendment or supplement or use similar Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.

Claims (3)

1. the mould of automatic shearing cast gate in a mould, it is characterised in that including:

Lower bolster, fastens on lower bolster and has cope match-plate pattern, and described cope match-plate pattern and lower bolster surround formation sub-runner and for goods The die cavity of molding, described sub-runner is by cast gate and die cavity UNICOM, and be provided through with die cavity UNICOM in lower bolster is some First push rod and some second push rods with sub-runner UNICOM；

Cut cells, including the fixing seat being installed in lower bolster, the oil cylinder being located in fixing seat and with cylinder ejector end The cutting knife being connected, described cutting knife includes head, the afterbody being connected as a single entity, the cylindrical setting of described afterbody, and described head is sheet Shape is arranged and head two sides arc-shaped transition is to the circumferential lateral surface of afterbody, and apical head has a blade and blade side is provided with Work surface, described work surface is suitable with the shape of die cavity inwall, when cutting knife towards cast gate motion make blade act on cast gate with The junction of die cavity when being isolated with cast gate by die cavity, work surface is resisted against on die cavity inwall.

The mould of automatic shearing cast gate in a kind of mould the most according to claim 1, it is characterised in that arrange in lower bolster Having the core block for moulded products, described sub-runner part is positioned at core block and described head is located in core block.

The mould of automatic shearing cast gate in a kind of mould the most according to claim 1 and 2, it is characterised in that in lower bolster Be additionally provided with the oil pipe for accepting outside fluid, described oil pipe sequentially pass through lower bolster, fixing seat and with oil cylinder UNICOM.