CN101733904B - Automatic in-mould edge gate cutting injection mould - Google Patents
Automatic in-mould edge gate cutting injection mould Download PDFInfo
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- CN101733904B CN101733904B CN2009102418849A CN200910241884A CN101733904B CN 101733904 B CN101733904 B CN 101733904B CN 2009102418849 A CN2009102418849 A CN 2009102418849A CN 200910241884 A CN200910241884 A CN 200910241884A CN 101733904 B CN101733904 B CN 101733904B
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Abstract
The invention relates to a plastic injection mould, in particular to an automatic in-mould edge gate cutting injection mould comprising a fixed mould, a movable mould, an ejecting mechanism, a guide post and a guide bush which are used for connecting the movable mould and the fixed mould, and a gate cutting device, wherein the gate cutting device comprises a plurality of resetting rod slide holespositioned on an edge gate of an injection part and penetrating a fixed mould core and a fixed mould plate, and a plurality of cutter slide holes penetrating a movable mould core, resetting rods are arranged in the resetting rod slide holes, and cutters are arranged in the cutter slide holes; the cutters abut against the end faces of the resetting rods which are fixed with a fixing plate of the fixed mould; the cutters abut against a movable mould plate through springs; a separation inhibiting device is arranged between the fixed mould plate and the fixing plate of the fixed mould, and a mould separating damper is arranged between the fixed mould plate and the movable mould plate. The mould opening force of an injection machine is used for cutting off a gate runner in the process of mouldopening; and concretely, the cutters do shearing movements opposite to the edge gate of the part through the spring force at the bottoms of the cutters to automatically shear and separate the injection part and the gate, and therefore, the automatic in-mould edge gate cutting injection mould dispenses with the subsequent process of cutting off the gate.
Description
Technical field
The present invention relates to a kind of plastic injection mold, belong to mould applications, particularly a kind of automatic in-mould edge gate cutting injection mould.It is that shear is set in mould; In the die sinking process; Utilizing the mould opening force of injection machine to realize the runner cut-out, specifically is through cutting knife bottom spring force, makes the relative part side gate of cutting knife do shearing motion; Automatically injection-moulded plastic part is sheared with cast gate and separated, exempt the follow-up cast gate excision of carrying out.
Background technology
Present side gate advances that the plastic injection mold of glue form is as shown in Figure 1, and it mainly comprises cover half 010, dynamic model 020 and ejecting mechanism 030, forms die joint 0120, die cavity 0241 and runner 0242 between said cover half 010 and the dynamic model 020.Be slidingly connected each other through guide pillar guide pin bushing 040 between said cover half 010, the dynamic model 020.
Said cover half 010 comprises cover half fixed head 011, solid plate 012, cover half benevolence 013, adaptor 014 and flange 015.Said cover half fixed head 011 is provided with a plurality of stepped holes 0111, and passes said stepped hole 0111 through screw 016 and fix with said solid plate 012; The die joint 0120 of said solid plate 012 is provided with groove cave 0121, and said cover half benevolence 013 is provided with runner hole 0131, and said cover half benevolence 013 build-in is in the groove cave 0121 of said solid plate 012; Cover half fixed head 011 central axis position offers stairstepping through hole 0112; Said solid plate 012 central axis position correspondence is provided with shoulder hole 0122; Said adaptor 014 passes in the shoulder hole 0122 that said through hole 0112 is fixed at said solid plate 012 center, and the runner hole 0131 of the injection orifice of said adaptor 014 and said cover half benevolence 013 connects; Said cover half fixed head 011 is installed in the fixation side of Jet forming machine.Said flange 015 is placed in the said stairstepping through hole 0112 supporting said adaptor 014, and said flange 015 middle part is formed with perforate so that the injection nozzle of injection machine can cooperate adaptor 014.
Said dynamic model 020 comprises dynamic mould fixing plate 021, parallels 022, moving platen 023 and mavable module core 024.Said dynamic mould fixing plate 021, parallels 022, moving platen 023 and mavable module core 024 are fixed relative to one another through screw.Said dynamic mould fixing plate 021 is connected with the movable plate of injection machine, forms the movable side of mould.Said parallels 022 is fixedly installed on the said dynamic mould fixing plate 021; Said moving platen 023 be fixedly arranged on said parallels 022 above; Have groove cave 0231 on the said moving platen 023; Said mavable module core 024 build-in is in the groove cave 0231 of said moving platen 023, and said mavable module core 024 is provided with said die cavity 0241 with the die joint of said cover half benevolence 013 and is connected the runner 0242 in runner hole 0131, with shaped article.
Said ejecting mechanism 030 comprises upper ejector plate 031, following liftout plate 032 and many thimbles 033.Have a plurality of shoulder holes 0311 on the said upper ejector plate 031; Have a plurality of centre holes 0233,0234 of mutual perforation on moving platen 023 and the mavable module core 024; Said a plurality of thimble 033 1 ends pass said shoulder hole 0311; And be contained in the said centre hole 0233,0234, the other end is stuck in the said shoulder hole 0311.Said liftout plate 032 down is located at the downside of said upper ejector plate 031, and fixes with said upper ejector plate 031, with fixing a plurality of thimbles 033.When ejecting product, said upper ejector plate 031 and said liftout plate 032 are down promoted by the knock-pin 034 of injection machine, thereby drive thimble 033 relative dynamic model 030 motion, and the moulding 50 (as shown in Figure 2) that solidifies is ejected.For the common one-mold multiple-member of small-sized moulding, injection-moulded plastic part 51 is connected with injection moulding cast gate 53 through the injection molding channel 52 of part side in the moulding 50 that ejects, and injection molding channel 52 is provided with the less side gate in cross section 54 with injection-moulded plastic part 51 junctions; Traditionally injection molding channel 52 and injection moulding cast gate 53 are referred to as runner material handle.(side gate) needs artificial separation to handle in the junction for injection back goods and runner, causes labor waste and low production efficiency, especially is embodied in the little goods injection mould in many types of chamber, and artificial treatment also causes goods to damage easily.Therefore, the excision cast gate reduces follow-up artificial excision in the mould, boost productivity, and be that mold manufacturing industry is needed one of problem of solution badly.
Patent No. 200720120764.X discloses a kind of injection mold with shut-off mechanism; Comprise cover half, dynamic model, ejecting mechanism and die holder; Constitute the die cavity of the required form of product between the die of fixed half and moving half; Have the mouth of a river of the liquid plastic cement of injection on the cover half, be equipped with top roller in the die holder, it is characterized in that: the direction that ejects of said top roller is provided with ejecting mechanism in; Ejecting mechanism has the fixing cutting knife push rod of an end in said, and the body of rod of said cutting knife push rod passes ejecting mechanism and dynamic model, and its other end has cutting knife, and the vertical edge of said cutting knife cutter head aligns with the interface at the die cavity and the mouth of a river.
The disclosed technical scheme of this patent remains in using and making in following deficiency:
When 1, cutting knife cuts off the mouth of a river; Its blade must push up to cover half; This just requires the position height size of the length of cutting knife, the degree of depth of groove, the thickness that descends interior liftout plate and cover half lower surface very accurate; Can't cut otherwise will cause, or cutting knife and cover half lower surface bump causes mould and cutting knife damage.
2, in the whole die sinking process, require twice action of push rod, ejection is for the first time accomplished the mouth of a river and is cut off, and the part demoulding is accomplished in ejection for the second time, has then not only increased the trouble on the Machine-Tool Control setting operation, has also increased machining period simultaneously, and production efficiency is reduced.
200710073000 patents of invention disclose material cutting mechanism in a kind of mould, and it is applied to a kind of mould, and said mould comprises a dynamic model and a cover half; Said dynamic model and cover half form a die cavity, and said mould also comprises an inscribe hole, and said inscribe hole is run through said dynamic model and communicated with said die cavity; Material cutting mechanism comprises that an inscribe thimble and draws the material thimble in the said mould; Said inscribe thimble is placed in the said inscribe hole, and said inscribe thimble middle part has a through hole, and the said material thimble that draws is placed in the said through hole; The said material thimble that draws has a tapered end; Said tapered end makes running channel stub bar and cover half break away from when being used for die sinking, said inscribe thimble cooperates with cover half with the shear product waste material, and the said material thimble that draws is to eject the product waste material.
The inscribe thimble of this patent and draw the material thimble to need the electromagnetism or the pneumatic actuation of peripheral hardware and carries out at twice, not only makes mould structure complicated, and when having increased the part worker, exists the inscribe thimble to answer back to the cover half problem too simultaneously.
02267383.0 disclose a kind of injection mould that is used for the automatic break gate of side gate charging form; It comprises moving platen and solid plate; On moving platen, establish backing plate, mould pin, establish ejector pin retaining plate on the backing plate, on ejector pin retaining plate, establish push rod, push rod, release link; On the mould pin, establish dynamic model, establish mold insert, guide pillar on the dynamic model; On solid plate, establish quiet mould, centring ring, sprue bush, runner is established at the sprue bush center, and the runner front end is established cast gate; On quiet mould, establish guide pin bushing, guide pin bushing is corresponding with guide pillar, and the two plugs; Its characteristics are on solid plate, to establish push rod; On dynamic model, establish spring, on dynamic model, quiet mould, establish side edge cutting knife, side edge resetting block, the two interchangeable position.This utility model is on the top board of injection-moulding device, hydraulic cylinder to be housed, and behind the moulding curing molding, hydraulic cylinder drives runner ejection plate and retreats, and side edge cutting knife, side edge resetting block cut off side gate under spring action.
200820045218 utility model patents disclose a kind of side gate automatic disconnecting device, comprise dynamic model, quiet mould, sprue bush, behind dynamic model and the quiet mould matched moulds runner are arranged; On sprue bush, be provided with the cutting knife release link, on quiet mould, offer and the corresponding guide hole of said cutting knife release link, said guide hole passes said runner; Said cutting knife release link is plugged in the said guide hole, and the guide hole corresponding section with said quiet mould on dynamic model offers through hole, and said through hole passes runner; Device has spring and cutting knife in the through hole; Spring and cutting knife socket, said cutting knife top offers otch, and said device can cut off plastic cement products and the interior sizing material of runner that connects together automatically.
The cutting knife release link roof pressure that this patent utilization is fixedly arranged on the sprue bush both sides has the cutting knife of spring, abdicates flow channel space, and cast finishes, and sprue bush is released, and cutting knife cuts off cast gate under the effect of spring restoring force.Obviously, the injection mould that is fixed on the solid plate for sprue bush can't adopt.
200820001042 utility model patents disclose automatic cutting means in a kind of injection molding mould, and it comprises: a set of molds is provided with a mould inside groove in it; Cutting mechanism includes and cuts part and replace device in one mould, cuts part and is provided in a side of in the mould inside groove of described set of molds and is provided with runner, and replacing device is to cut part to being located at, and is used for producing a displacement and being used as power cutting part.This patent does not disclose the described device of replacing, and only says to be an elastic device, like spring etc., can be other the mechanism that replaces yet, and like push arm, push boat etc., utilizes control automatically to produce and replace active force to cooperate the injection molding operation to cut part to described second.
Because above-mentioned existing cast gate cuts off the above-mentioned deficiency that injection mould exists automatically; The design people is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge; And cooperate the utilization of studying the science, actively study innovation, in the hope of founding a kind of automatic in-mould edge gate cutting injection mould of new structure; Can improve general existing injection mould, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, found out the present invention of true tool practical value finally.
Summary of the invention
The objective of the invention is to, overcome existing cast gate and cut off the defective that injection mould exists automatically, and a kind of automatic in-mould edge gate cutting injection mould of new structure is provided; Technical problem to be solved is, cuts off guaranteeing, prevents that cutting knife from colliding the cover half die joint; Utilize die sinking power to realize automatic in-mould edge gate cutting; Enhancing productivity, thereby be suitable for practicality more, and have the value on the industry.
The object of the invention and to solve its technical problem be that technical scheme below adopting realizes.A kind of automatic in-mould edge gate cutting injection mould according to the present invention's proposition; Comprise the cover half that is constituted by cover half fixed head, solid plate, cover half benevolence, by the dynamic model that dynamic mould fixing plate, parallels, moving platen and mavable module core constituted, by upper ejector plate, the following ejecting mechanism that constituted of liftout plate and many thimbles; The guide pillar guide pin bushing that connects dynamic model and cover half; Pouring-head cutting device, wherein said pouring-head cutting device comprises being positioned at injection-moulded plastic part side gate position; The a plurality of release link slide openings that run through cover half Renhe solid plate; Relative with said a plurality of release link slide openings, run through in a plurality of cutting knife slide openings of mavable module core, the said release link slide opening being provided with release link, be provided with cutting knife in the said cutting knife slide opening; The end face of said cutting knife and said release link offsets, and said release link and said cover half fixed head are fixed; Said cutting knife supports said moving platen through the spring top; Said solid plate is slidedly arranged on the guide pillar through guide pin bushing, is provided with between said solid plate and the said cover half fixed head and separates stopping means, is provided with branch mould damper between said solid plate and the said moving platen, and said guide pillar and said upper mould fixed plate are fixed.
The object of the invention and technical problem to be solved can also adopt following technical measures to come further to realize.
Aforesaid automatic in-mould edge gate cutting injection mould; Wherein said release link and said cover half fixed head fixedly are to be provided with a release link fixed head; Correspondence is provided with a plurality of release link holes with step on the said release link fixed head; The end of said release link is provided with hook, and said release link is inserted said release link hole, the step in the said release link of the hook hook hole of its end; Through said release link fixed head said release link is fixed on the said cover half fixed head, said solid plate is provided with release link fixed head holding tank.
Aforesaid automatic in-mould edge gate cutting injection mould; It is on the said moving platen, to be provided with a plurality of spring-housing grooves corresponding to said a plurality of cutting knife slide openings that wherein said cutting knife supports said moving platen through the spring top; Said spring is located in the said spring-housing groove, and said spring is supported on said cutting knife top; Or said spring is provided with jacking block, and said cutting knife supports said spring through said jacking block top.
Aforesaid automatic in-mould edge gate cutting injection mould; Wherein said separation stopping means is that the cover half fixed head is provided with a plurality of stepped holes; Correspondence is provided with a plurality of screws on the said solid plate; The stepped hole that shouldered tap bolt passes said cover half fixed head is fixed in the screw of said solid plate; When cover half fixed head and the applying of said solid plate, have gap H between the shoulder of said shouldered tap bolt and the step surface of said stepped hole, constitute the maximum separation distance between said cover half fixed head and the said solid plate; Said maximum separation distance H is greater than the running channel thickness that connects moulding.
The object of the invention and solve its technical problem and can also adopt following technical scheme to realize.
A kind of automatic in-mould edge gate cutting injection mould; Comprise by the fixing in regular turn cover half that is constituted of cover half fixed head, solid plate, cover half benevolence, by the dynamic model that dynamic mould fixing plate, parallels, moving platen and mavable module core constituted, by upper ejector plate, the ejecting mechanism that constituted of liftout plate and many thimbles down; The guide pillar guide pin bushing that connects dynamic model and cover half; Pouring-head cutting device is characterized in that said pouring-head cutting device, comprises being positioned at injection-moulded plastic part side gate position; The a plurality of release link slide openings that run through mavable module core and moving platen; Relative with said a plurality of release link slide openings, run through in a plurality of cutting knife slide openings of cover half benevolence, the said release link slide opening being provided with release link, be provided with cutting knife in the said cutting knife slide opening; The end face of said cutting knife and said release link offsets; Be provided with backing plate between said moving platen and the said parallels, said guide pillar and said release link and said shim, said backing plate is fixed through said parallels and said dynamic mould fixing plate; Said cutting knife supports said solid plate through the spring top; Be provided with between said moving platen and the said backing plate and separate stopping means, be provided with branch mould damper between said solid plate and the said moving platen.
Aforesaid automatic in-mould edge gate cutting injection mould; The structure of wherein said release link and said shim is; Be provided with a release link fixed head, correspondence is provided with a plurality of release link holes with step on the said release link fixed head, and the end of said release link is provided with hook; Said release link is inserted said release link hole; The step in the said release link of the hook hook hole of its end is fixed in said release link on the said backing plate through said release link fixed head, and said moving platen is provided with release link fixed head holding tank.
Aforesaid automatic in-mould edge gate cutting injection mould; The structure that wherein said cutting knife supports said solid plate through the spring top is on the said solid plate, to be provided with a plurality of spring-housing grooves corresponding to said a plurality of cutting knife slide openings; Said spring is located in the said spring-housing groove; Said spring is supported on said cutting knife top, or said spring is provided with jacking block, and said cutting knife supports said spring through said jacking block top.
Aforesaid automatic in-mould edge gate cutting injection mould; Wherein said separation stopping means is on moving platen, to be provided with a plurality of stepped holes; Correspondence is provided with a plurality of screws on the said backing plate, and the stepped hole that shouldered tap bolt passes said moving platen is fixed in the screw of said backing plate, when backing plate and the applying of said moving platen; Have gap H between the shoulder of said shouldered tap bolt and the step surface of said stepped hole, constitute the maximum separation distance between said backing plate and the said moving platen; Said maximum separation distance H is greater than the running channel thickness that connects moulding.
Aforesaid automatic in-mould edge gate cutting injection mould; Wherein said minute mould damper is to be made up of screw rod and the elastic tensioning spare that is sheathed on the said screw rod, and said solid plate is provided with rubbing hole, and correspondence is provided with screw on the said moving platen; The screw rod that is with elastic tensioning spare of said minute mould damper is screwed into the screw on the said moving platen; Insert in the rubbing hole of said solid plate, through regulating the outer length of said screw rod, promptly scalable elastic tensioning spare is to the frictional force of rubbing hole; Said elastic tensioning spare is Elastic plastic-rubber bellows or drum type Elastic plastic-rubber pipe.
Aforesaid automatic in-mould edge gate cutting injection mould, the end face with the said masthead that resets supports of wherein said cutting knife is provided with flow path groove and the cast gate that links to each other with die cavity.
The present invention compared with prior art has tangible advantage and beneficial effect.By technique scheme, automatic in-mould edge gate cutting injection mould of the present invention can reach suitable technological progress property and practicality, and has the extensive value on the industry, and it has advantage at least:
1, the present invention has set up branch mould damper and has separated stopping means in mould, thereby reaches in the die sinking process, utilizes the mould opening force of injection machine to realize the runner cut-out; Specifically be through cutting knife bottom spring force; Make the relative die of cutting knife do shearing motion, realize the runner cut-out, need not the additionaling power device; And realize that die sinking pushing tow accomplishes the demoulding of injection-moulded plastic part, do not increase part injection moulding man-hour.
2, the present invention adopts the technical scheme that the end face of said cutting knife and said release link offsets, thereby fundamentally stops the problem that cutting knife collides die or can't cut runner, has improved product quality, has prolonged the service life of mould.Meet cost benefit, quite have the value of industry.
3, the present invention has increased cast gate automatic shearing machine structure on mould, has very strong practicality, is easy to automated production; And simple in structure, to manufacture conveniently, manufacturing cost reduces relatively; Thereby can significantly reduce cost, increase economic efficiency, on practicality of using and cost benefit; Really it is required to meet industry development fully, quite has industrial utilization.
4, structure of the present invention really has more technological progress property than existing inscribe cast gate injection mould; And its particular structure characteristic and function also are far from existing inscribe cast gate injection mould comparable; More existing inscribe cast gate injection mould has many tops effect of enhancement, and the progress on possessing skills.
5, structure of the present invention not only is used for many types of chamber sidegated injection mold, also can be used for monotype chamber sidegated injection mold.
In sum, the automatic in-mould edge gate cutting injection mould that the present invention is novel has above-mentioned plurality of advantages and practical value; No matter it all has bigger improvement on product structure or function, obvious improvement is arranged technically, and produced handy and practical effect; And more existing automatic in-mould edge gate cutting injection mould has the outstanding multinomial effect of enhancement; Thereby being suitable for practicality more, and having the extensive value of industry, really is the new design of a novelty, progress, practicality.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention; Understand technological means of the present invention in order more to know; And can implement according to the content of specification, and for let of the present invention above-mentioned with other purposes, feature and advantage can be more obviously understandable, below spy's act preferred embodiment; And conjunction with figs., specify as follows.
Description of drawings
Fig. 1 is an existing many types of chamber sidegated injection mold structure chart.
Fig. 2 is the schematic perspective view of moulding of the present invention.
Fig. 3 is the structure chart of automatic in-mould edge gate cutting injection mould embodiment one of the present invention.
Fig. 4 is the structure chart of automatic in-mould edge gate cutting injection mould embodiment two of the present invention.。
Fig. 5 is the schematic perspective view of cutting knife in the automatic in-mould edge gate cutting injection mould of the present invention.
The specific embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention; Below in conjunction with accompanying drawing and preferred embodiment; To the automatic in-mould edge gate cutting injection mould specific embodiment, structure, characteristic and the effect thereof that proposes according to the present invention, specify as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can clearly appear in the following detailed description that cooperates with reference to graphic preferred embodiment.Explanation for ease, in following embodiment, components identical is represented with identical numbering.
Embodiment one
See also a kind of automatic in-mould edge gate cutting injection mould of Fig. 3 preferred embodiment of the present invention; Comprise the cover half 10 that is made up of cover half fixed head 11, solid plate 12, cover half benevolence 13, the dynamic model 20 that is made up of dynamic mould fixing plate 21, parallels 22, moving platen 23 and mavable module core 24 is by upper ejector plate 31, the ejecting mechanism 30 that constituted of the knock-pin 34 of liftout plate 32, many thimbles 33 and injection machine down; Guide pillar 41 guide pin bushings 42 that connect dynamic model 20 and cover half 30; Pouring-head cutting device 60, wherein said pouring-head cutting device 60 comprises being positioned at injection-moulded plastic part side gate position; The a plurality of release link slide openings 61 that run through cover half benevolence 13 and solid plate 12; Relative with said a plurality of release link slide opening 61, run through in a plurality of cutting knife slide openings 62 of mavable module core 24, the said release link slide opening 61 being provided with release link 63, be provided with cutting knife 64 in the said cutting knife slide opening 62; Said cutting knife 64 offsets with the end face of said release link 63, and said release link 63 is fixed with said cover half fixed head 11; Said cutting knife 64 supports said moving platen 23 through spring 65 tops; Said solid plate 12 is slidedly arranged on the guide pillar 41 through guide pin bushing 42; Be provided with between said solid plate 12 and the said cover half fixed head 11 and separate stopping means 70; Be provided with branch mould damper 80 between said solid plate 12 and the said moving platen 23, said guide pillar 41 is fixed with said upper mould fixed plate 11.Solid plate 12 is provided with adaptor 14.
During matched moulds, said cover half fixed head 11, solid plate 12, moving platen 23, parallels 22 and dynamic mould fixing plate 21 are fitted in regular turn, and the injection mouth top of injection machine is supported adaptor 14 and carried out injection moulding.Die sinking behind the injection mo(u)lding part cooling curing, die sinking initial, the moving dynamic model 20 of the moving strip of injection machine moves; Owing to be provided with branch mould damper 80 between moving platen 23 and the solid plate 12; Said solid plate 12 is slidedly arranged on the guide pillar 41 through guide pin bushing 42, and is connected through separating stopping means 70 between the said cover half fixed head 11, therefore; Said solid plate 12 will separate with said cover half fixed head 11, with moving platen 23 same moved further; And said release link 63 is fixed with said cover half fixed head 11; Therefore release link 63 is removed replacing cutting knife 64; Cutting knife 64 produces relative motions with mavable module core 24, the cut-out side gate with the solid plate 12 be located at of said maintenance matched moulds state with cover half benevolence 13 in the moving platen 23 under the effect of spring 65.The moving plate of injection machine continues to drive dynamic model 20 and solid plate 12 moves, and moves to when separating the maximum separation distance that stopping means 70 limited up to solid plate 12, and solid plate 12 is separated stopping means 70 restrictions and separates with said dynamic model 20, realizes die sinking.At this moment, the knock-pin 34 of injection machine will cut cast gate through thimble 33 plastic parts and runner material ejection device.
In the specific embodiment shown in Figure 3; Said release link 63 with said cover half fixed head 11 fixing structures is: be provided with a release link fixed head 19; Correspondence is provided with a plurality of release link holes 191 with step 192 on the said release link fixed head 19; The end of said release link 63 is provided with hook 641, and said release link 63 is inserted said release link hole 191, the step 193 in the said release link of the hook 641 hooks hole 191 of its end; Through said release link fixed head 19 said release link 64 is fixed on the said cover half fixed head 11, said solid plate 12 is provided with release link fixed head holding tank 122.
In the specific embodiment shown in Figure 3; The structure that said cutting knife 64 supports said moving platen through spring 65 tops is; On the said moving platen 23; Be provided with a plurality of spring-housing grooves 66 corresponding to said a plurality of cutting knife slide openings 62, said spring 65 is located in the said spring-housing groove 66, and said spring 65 is supported on said cutting knife 64 tops; Or said spring 65 is provided with jacking block 67, and said cutting knife 64 supports said spring 65 through said jacking block 67 tops.
In the specific embodiment shown in Figure 3; The structure of said separation stopping means 70 is: cover half fixed head 11 is provided with a plurality of stepped holes 71; Correspondence is provided with a plurality of screws 72 on the said solid plate 12; The stepped hole 71 that shouldered tap bolt 73 passes said cover half fixed head is fixed in the screw 72 of said solid plate; When cover half fixed head 11 is fitted with said solid plate 12, have gap H between the step surface of the shoulder of said shouldered tap bolt 72 and said stepped hole 71, constitute the maximum separation distance between said cover half fixed head and the said solid plate; Said maximum separation distance H is greater than the running channel thickness that connects moulding.
Embodiment two
Seeing also shown in Figure 4 is the another kind of preferred embodiments of automatic in-mould edge gate cutting injection mould of the present invention; Comprise by the fixing in regular turn cover half that is constituted of cover half fixed head 11 ', solid plate 12 ', cover half benevolence 13 '; By dynamic mould fixing plate 21, parallels 22, dynamic model that moving platen 23 ' and mavable module core 24 ' constituted; By upper ejector plate 31, following liftout plate 32 and the many ejecting mechanisms that thimble 33 is constituted, connect guide pillar 41 guide pin bushings 42 of dynamic model and cover half, pouring-head cutting device; Wherein said pouring-head cutting device; Comprise being positioned at injection-moulded plastic part side gate position, run through a plurality of release link slide openings 61 ' of mavable module core 24 ' and moving platen 23 ', relative with said a plurality of release link slide opening 61 '; Run through in a plurality of cutting knife slide openings 62 ' of cover half benevolence 13 ', the said release link slide opening 61 ' being provided with release link 63, be provided with cutting knife 64 in the said cutting knife slide opening 62 '; Said cutting knife 64 offsets with the end face of said release link 63; Be provided with backing plate 25 between said moving platen 23 ' and the said parallels 22, said guide pillar 41 and said release link 63 are fixed with said backing plate 25, and said backing plate 25 is fixed through said parallels 22 and said dynamic mould fixing plate 21; Said cutting knife 64 supports said solid plate 12 ' through spring 65 tops; Be provided with between said moving platen 23 ' and the said backing plate 25 and separate stopping means 70 ', be provided with branch mould damper 80 between said solid plate 12 ' and the said moving platen 23 '.
The difference of present embodiment and embodiment one is in the die sinking process; Said cover half fixed head 11 ' does not separate with said solid plate 12 '; Use moving platen 23 ' instead not with dynamic model fixed head 21 same moved further, and the way that the release link in the pouring-head cutting device moves with dynamic model fixed head 21 causes cutting knife 64 and the relative displacement of said part side gate to realize the mould incised.Detailed process is following:
During matched moulds, said cover half fixed head 11 ', solid plate 12 ', moving platen 23 ', parallels 22, backing plate 25 and dynamic mould fixing plate 21 are fitted in regular turn, and the injection mouth top of injection machine is supported adaptor 14 and carried out injection moulding.Die sinking behind the injection mo(u)lding part cooling curing, die sinking initial, the moving dynamic model of the moving strip of injection machine moves; Owing to be provided with branch mould damper 80 between moving platen 23 ' and the solid plate 12 '; Said moving platen 23 ' is slidedly arranged on the guide pillar 41 through guide pin bushing 42, and is connected through separating stopping means 70 between the said backing plate 25, therefore; Said moving platen 23 ' will separate with said backing plate 25, keep fitting with said solid plate 12 '; And said release link 63 is fixed with said backing plate 25; Therefore release link 63 moves with backing plate 25; Releasing is replaced cutting knife 64; Cutting knife 64 produces relative motion with mavable module core 24 ', the cut-out side gate with the solid plate 12 ' be located at of said maintenance matched moulds state with cover half benevolence 13 ' in the moving platen 23 ' under the effect of spring 65.The backing plate 25 that the moving plate of injection machine continues to drive in the dynamic model 20 ' moves; When being located at separating stopping means 70 ' and reach the maximum separation distance that is limited between said moving platen 23 ' and the said backing plate 25; Moving platen 23 ' is separated stopping means 70 ' restriction and is separated with said solid plate 12 ', realizes die sinking.At this moment, the knock-pin 34 of injection machine will cut cast gate through thimble 33 part and runner material ejection device.
In the specific embodiment shown in Figure 4; Said release link 63 with said backing plate 25 fixing structures is; Be provided with a release link fixed head 19 ', said release link fixed head 19 ' is gone up correspondence and is provided with a plurality of release link holes 191 ' with step 192 ', and the end of said release link 63 is provided with hook 631; Said release link 63 is inserted said release link hole 191 '; The step 192 ' in the said release link of the hook 631 hooks hole of its end is fixed in said release link 63 on the said backing plate 25 through said release link fixed head 19 ', and said moving platen 23 ' is provided with release link fixed head holding tank 233.
In the specific embodiment shown in Figure 4; The structure that said cutting knife 64 supports said solid plate 12 ' through spring 65 tops is on the said solid plate 12 ', to be provided with a plurality of spring-housing grooves 66 ' corresponding to said a plurality of cutting knife slide openings 62 '; Said spring 65 is located in the said spring-housing groove 66 '; Said spring 65 is supported on said cutting knife 64 tops, or said spring 65 is provided with jacking block 67, and said cutting knife 64 supports said spring 65 through said jacking block 67 tops.
In the specific embodiment shown in Figure 4; Said separation stopping means 70 ' is on moving platen 23 ', to be provided with a plurality of stepped holes 71 '; Correspondence is provided with a plurality of screws 72 ' on the said backing plate 25; The stepped hole 71 ' that shouldered tap bolt 73 passes said moving platen 23 ' is fixed in the screw 72 ' of said backing plate 25; When backing plate 25 is fitted with said moving platen 23 ', have gap H between the shoulder of said shouldered tap bolt 73 and the step surface of said stepped hole 71 ', constitute the maximum separation distance between said backing plate 25 and the said moving platen 23 '; Said maximum separation distance H is greater than the running channel thickness that connects moulding.
Said minute mould damper 80 is to be made up of screw rod 81 and 82 of elastic tensioning spares that are sheathed on the said screw rod 81; Said solid plate 12 is provided with rubbing hole 83; Correspondence is provided with screw 84 on the said moving platen 23, the screw rod that is with elastic tensioning spare 82 81 of said minute mould damper be screwed into said moving platen 23 ' on screw 84, insert said solid plate 12 ' rubbing hole 83 in; Through regulating the outer length of said screw rod 81, i.e. the frictional force of 82 pairs of rubbing holes 83 of scalable elastic tensioning spare; Said elastic tensioning spare 82 is Elastic plastic-rubber bellows or drum type Elastic plastic-rubber pipe.
See also shown in Figure 5ly, the end face with said release link 63 tops are supported of said cutting knife 64 is provided with flow path groove 642 and the cast gate that links to each other with die cavity 643.During matched moulds, the flow path groove 642 of said cutting knife 64 end faces is consistent with the runner on the said die, during for injection moulding; Happy and harmonious plastics get into part die cavity thus; The other end of cutting knife is provided with limited block 641, and when preventing die sinking, said cutting knife is deviate from from mavable module core or cover half benevolence.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme scope of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be the content that does not break away from technical scheme of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (10)
1. automatic in-mould edge gate cutting injection mould; Comprise the cover half that is constituted by cover half fixed head, solid plate, cover half benevolence; By the dynamic model that dynamic mould fixing plate, parallels, moving platen and mavable module core constituted,, connect the guide pillar guide pin bushing of dynamic model and cover half by the ejecting mechanism that upper ejector plate, following liftout plate and many thimbles are constituted; Pouring-head cutting device; It is characterized in that said pouring-head cutting device, comprise being positioned at a plurality of release link slide openings injection-moulded plastic part side gate position, that run through cover half Renhe solid plate a plurality of cutting knife slide openings relative with said a plurality of release link slide openings, that run through mavable module core; Be provided with release link in the said release link slide opening, be provided with cutting knife in the said cutting knife slide opening; The end face of said cutting knife and said release link offsets, and said release link and said cover half fixed head are fixed; Said cutting knife supports said moving platen through the spring top; Said solid plate is slidedly arranged on the guide pillar through guide pin bushing; Be provided with between said solid plate and the said cover half fixed head and separate stopping means; Said separation stopping means is that the cover half fixed head is provided with a plurality of stepped holes; Correspondence is provided with a plurality of screws on the said solid plate, and the stepped hole that shouldered tap bolt passes said cover half fixed head is fixed in the screw of said solid plate, when cover half fixed head and the applying of said solid plate; Have gap H between the shoulder of said shouldered tap bolt and the step surface of said stepped hole, constitute the maximum separation distance between said cover half fixed head and the said solid plate; Be provided with branch mould damper between said solid plate and the said moving platen; Said minute mould damper is to be made up of screw rod and the elastic tensioning spare that is sheathed on the said screw rod, and said solid plate is provided with rubbing hole, and correspondence is provided with screw on the said moving platen; The screw rod that is with elastic tensioning spare of said minute mould damper is screwed into the screw on the said moving platen; Insert in the rubbing hole of said solid plate, through regulating the outer length of said screw rod, promptly scalable elastic tensioning spare is to the frictional force of rubbing hole; Said guide pillar and said upper mould fixed plate are fixed.
2. automatic in-mould edge gate cutting injection mould according to claim 1; It is characterized in that the fixing structure of said release link and said cover half fixed head is to be provided with a release link fixed head; Correspondence is provided with a plurality of release link holes with step on the said release link fixed head; The end of said release link is provided with hook, and said release link is inserted said release link hole, the step in the said release link of the hook hook hole of its end; Through said release link fixed head said release link is fixed on the said cover half fixed head, said solid plate is provided with release link fixed head holding tank.
3. automatic in-mould edge gate cutting injection mould according to claim 1; It is characterized in that the structure that said cutting knife supports said moving platen through the spring top is; On the said moving platen; Be provided with a plurality of spring-housing grooves corresponding to said a plurality of cutting knife slide openings, said spring is located in the said spring-housing groove, and said spring is supported on said cutting knife top; Or said spring is provided with jacking block, and said cutting knife supports said spring through said jacking block top.
4. automatic in-mould edge gate cutting injection mould according to claim 1 is characterized in that said maximum separation distance H is greater than the running channel thickness that connects moulding.
5. automatic in-mould edge gate cutting injection mould; Comprise by the fixing in regular turn cover half that is constituted of cover half fixed head, solid plate, cover half benevolence; By the dynamic model that dynamic mould fixing plate, parallels, moving platen and mavable module core constituted,, connect the guide pillar guide pin bushing of dynamic model and cover half by the ejecting mechanism that upper ejector plate, following liftout plate and many thimbles are constituted; Pouring-head cutting device; It is characterized in that said pouring-head cutting device, comprise being positioned at a plurality of release link slide openings injection-moulded plastic part side gate position, that run through mavable module core and moving platen a plurality of cutting knife slide openings relative with said a plurality of release link slide openings, that run through cover half benevolence; Be provided with release link in the said release link slide opening, be provided with cutting knife in the said cutting knife slide opening; The end face of said cutting knife and said release link offsets; Be provided with backing plate between said moving platen and the said parallels, said guide pillar and said release link and said shim, said backing plate is fixed through said parallels and said dynamic mould fixing plate; Said cutting knife supports said solid plate through the spring top; Be provided with between said moving platen and the said backing plate and separate stopping means; Separating stopping means is on moving platen, to be provided with a plurality of stepped holes; Correspondence is provided with a plurality of screws on the said backing plate, and the stepped hole that shouldered tap bolt passes said moving platen is fixed in the screw of said backing plate, when backing plate and the applying of said moving platen; Have gap H between the shoulder of said shouldered tap bolt and the step surface of said stepped hole, constitute the maximum separation distance between said backing plate and the said moving platen; Be provided with branch mould damper between said solid plate and the said moving platen; Said minute mould damper is to be made up of screw rod and the elastic tensioning spare that is sheathed on the said screw rod, and said solid plate is provided with rubbing hole, and correspondence is provided with screw on the said moving platen; The screw rod that is with elastic tensioning spare of said minute mould damper is screwed into the screw on the said moving platen; Insert in the rubbing hole of said solid plate, through regulating the outer length of said screw rod, promptly scalable elastic tensioning spare is to the frictional force of rubbing hole.
6. automatic in-mould edge gate cutting injection mould according to claim 5; The structure that it is characterized in that said release link and said shim is; Be provided with a release link fixed head, correspondence is provided with a plurality of release link holes with step on the said release link fixed head, and the end of said release link is provided with hook; Said release link is inserted said release link hole; The step in the said release link of the hook hook hole of its end is fixed in said release link on the said backing plate through said release link fixed head, and said moving platen is provided with release link fixed head holding tank.
7. automatic in-mould edge gate cutting injection mould according to claim 5; It is characterized in that the structure that said cutting knife supports said solid plate through the spring top is on the said solid plate, to be provided with a plurality of spring-housing grooves corresponding to said a plurality of cutting knife slide openings; Said spring is located in the said spring-housing groove; Said spring is supported on said cutting knife top, or said spring is provided with jacking block, and said cutting knife supports said spring through said jacking block top.
8. automatic in-mould edge gate cutting injection mould according to claim 5 is characterized in that said maximum separation distance H is greater than the running channel thickness that connects moulding.
9. according to claim 1 or 5 described automatic in-mould edge gate cutting injection moulds, it is characterized in that the elastic tensioning spare on the said screw rod that is sheathed on branch mould damper is Elastic plastic-rubber bellows or drum type Elastic plastic-rubber pipe.
10. according to claim 1 or 5 described automatic in-mould edge gate cutting injection moulds, it is characterized in that the end face with the said masthead that resets supports of said cutting knife is provided with flow path groove and the cast gate that links to each other with die cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102418849A CN101733904B (en) | 2009-12-14 | 2009-12-14 | Automatic in-mould edge gate cutting injection mould |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102418849A CN101733904B (en) | 2009-12-14 | 2009-12-14 | Automatic in-mould edge gate cutting injection mould |
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| CN101733904A CN101733904A (en) | 2010-06-16 |
| CN101733904B true CN101733904B (en) | 2012-07-04 |
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| CN105538616A (en) * | 2015-12-10 | 2016-05-04 | 昌辉精密模具（黄山）有限公司 | Method for realizing automatic cutting of disc gate during mould ejection |
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| CN105538616A (en) * | 2015-12-10 | 2016-05-04 | 昌辉精密模具（黄山）有限公司 | Method for realizing automatic cutting of disc gate during mould ejection |
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| CN101733904A (en) | 2010-06-16 |
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