CN112092305A

CN112092305A - Hot runner mold

Info

Publication number: CN112092305A
Application number: CN202010480275.5A
Authority: CN
Inventors: 卓楚光
Original assignee: Guangdong Dp Co ltd
Current assignee: Guangdong Dp Co ltd
Priority date: 2020-05-30
Filing date: 2020-05-30
Publication date: 2020-12-18

Abstract

The invention discloses a hot runner mold which comprises a hot runner, a heating component, an upper mold plate component and a lower mold plate component, wherein the upper mold plate component comprises an upper mold plate and an upper mold core, the lower mold plate component comprises a lower mold plate and a lower mold core, and when the upper mold plate and the lower mold plate are buckled together, a discharge hole in the hot runner is communicated with an inner cavity formed between the upper mold core and the lower mold core. In the invention, the heat generated by the heating component on the hot runner can ensure that the plastic in the hot runner is in a molten state, the discharge port on the hot runner is directly communicated with the product forming inner cavity between the upper mold core and the lower mold core, and the plastic in the whole runner is ensured to be in a molten state, so that the injection molding quality can be improved, the surface attractiveness of an injection molding product is better, the hot runner is not open, the phenomena of wire drawing and leakage can be avoided, the surface quality of the injection molding product is improved, manual post-treatment is not needed, the structure of the invention is simple, and the production cost can be effectively reduced.

Description

Hot runner mold

Technical Field

The invention relates to a mold, in particular to a hot runner mold.

Background

In the market, some injection molds do not adopt a hot runner system, the waste of materials is generated due to the fact that the materials in the flow channel are easily cooled in the injection molding mode, the production cost is increased, the open type hot runner is usually adopted by the hot runner injection mold in the market, although the open type hot runner is simple in structure, the phenomena of wire drawing and leakage are easily caused, the surface quality of the injection molded workpiece is poor, the waste of the materials is easily caused, and the production cost is increased.

Disclosure of Invention

The invention aims to provide a hot runner mold.

According to one aspect of the invention, the hot runner mold comprises a hot runner, a heating component, an upper mold plate component and a lower mold plate component, wherein the heating component is arranged on the hot runner, a feeding port and a discharging port are formed in the hot runner, the hot runner is arranged on the upper mold plate component, the upper mold plate component comprises an upper mold plate and an upper mold core, the upper mold core is arranged on the upper mold plate, the lower mold plate component comprises a lower mold plate and a lower mold core, the lower mold core is arranged on the lower mold plate, and when the upper mold plate and the lower mold plate are buckled together, the discharging port in the hot runner is communicated with an inner.

In the invention, the heat generated by the heating component on the hot runner can ensure that the plastic in the hot runner is in a molten state, the discharge port on the hot runner is directly communicated with the product forming inner cavity between the upper mold core and the lower mold core, and the plastic in the whole runner is ensured to be in a molten state, so that the injection molding quality can be improved, the surface attractiveness of an injection molding product is better, the hot runner is not open, the phenomena of wire drawing and leakage can be avoided, the surface quality of the injection molding product is improved, manual post-treatment is not needed, the structure of the invention is simple, and the production cost can be effectively reduced.

In some embodiments, the hot runner may include a flow distribution plate a and a flow distribution plate B, the flow distribution plate a and the flow distribution plate B are communicated and symmetrically arranged with respect to the feed inlet, at least one hot nozzle a is provided on the flow distribution plate a, the hot nozzle a is communicated with an inner cavity of the flow distribution plate a, at least one hot nozzle B is provided on the flow distribution plate B, the hot nozzle B is communicated with an inner cavity of the flow distribution plate B, when the upper mold plate and the lower mold plate are fastened together, a nozzle head of the hot nozzle a is communicated with an inner cavity formed between the upper mold core and the lower mold core, and a nozzle head of the hot nozzle B is communicated with an inner cavity formed between the upper mold core and the. From this, can mould plastics to two work pieces in step through flow distribution plate A and flow distribution plate B, two work pieces can be the same work piece, also can be the preceding shell and the backshell of a product, in addition, it can generate heat alone to chew A and heat with heat, effectively guarantees that the plastics in the whole runner all keep the molten state, and in addition, the pressure distribution that A and heat were chewed to heat is balanced, and it is smooth and easy, the equilibrium is good to go out to glue, can realize that the product evenly fills, guarantees that the product precision is stable.

In some embodiments, the heating member may include heating tubes a and heating tubes B, the heating tubes a being distributed along the upper end surface and the lower end surface of the flow distribution plate a, and the heating tubes B being distributed along the upper end surface and the lower end surface of the flow distribution plate B. From this, the heating pipe A is all arranged to flow distribution plate A's up end and lower terminal surface to can effectively guarantee that the plastics in flow distribution plate A keeps the molten state, and heating pipe B is all arranged to flow distribution plate B's up end and lower terminal surface, thereby can effectively guarantee that the plastics in flow distribution plate B keeps the molten state.

In some embodiments, the heating pipes a on the upper end face of the splitter plate a may be sunk in the splitter plate a, the heating pipes a on the lower end face of the splitter plate a may be sunk in the splitter plate a, the heating pipes B on the upper end face of the splitter plate B may be sunk in the splitter plate B, and the heating pipes B on the lower end face of the splitter plate B may be sunk in the splitter plate B. From this, both can effectively improve heat transfer efficiency in the heating pipe A sinks in flow distribution plate A, can prevent again that heating pipe A from moving, influence the heating to flow distribution plate A, can protect heating pipe A simultaneously, and be convenient for flow distribution plate A and other parts are connected, sink in flow distribution plate B in heating pipe B and both can effectively improve heat transfer efficiency, can prevent again that heating pipe B from moving, influence the heating to flow distribution plate B, can protect heating pipe B simultaneously, and be convenient for flow distribution plate B and other parts are connected.

In some embodiments, the mold further comprises a hot runner template, the hot runner template is arranged on the upper template, the splitter plate a and the splitter plate B are both arranged in the hot runner template in a sinking manner, a slot a for accommodating a circuit of the heating pipe a can be arranged on the hot runner template, a slot B for accommodating a circuit of the heating pipe B can be arranged on the hot runner template, when the upper template and the lower template are buckled together, a nozzle head of the hot nozzle a penetrates through the hot runner template and the upper template and is communicated with an inner cavity formed between the upper mold core and the lower mold core, and a nozzle head of the hot nozzle B penetrates through the hot runner template and the upper template and is communicated with an inner cavity formed between the upper mold core and the. From this, hot runner template can protect flow distribution plate A and flow distribution plate B, and heating pipe A's circuit can be accomodate to wire casing A in the hot runner template, and heating pipe B's circuit can be accomodate to wire casing B in the hot runner template, when hot runner template is connected with other parts, can not influence heating pipe A's circuit and heating pipe B's circuit.

In some embodiments, the hot runner mold plate may have a socket, the socket is connected to the heating tube a, the socket is connected to the heating tube B, the socket is connected to the hot nozzle a, and the socket is connected to the hot nozzle B. From this, the power control line that pegs graft on the socket just can be for heating pipe A and heating pipe B power supply and can control the work of heating pipe A and heating pipe B/stop work, simultaneously, also can chew the power supply for A and hot B of chewing and can control the work of hot A and hot B/stop work of chewing, when not using the mould, pulls out the power control line, makes things convenient for accomodating and putting of mould.

In some embodiments, the top of the wire slot a may be provided with at least one fixing plate a detachably connected with the hot runner template, and the top of the wire slot B may be provided with at least one fixing plate B detachably connected with the hot runner template. From this, stationary blade A can fix heating pipe A's circuit, prevents heating pipe A's circuit perk, can effectively protect heating pipe A's circuit, and stationary blade B can fix heating pipe B's circuit, prevents heating pipe B's circuit perk, can effectively protect heating pipe B's circuit.

In some embodiments, can also include bottom plate, liftout plate and a plurality of fore-set, the bottom plate is established on the bottom plate, is equipped with logical groove on the bottom plate, and the liftout plate holding is equipped with a plurality of through-holes on leading to the inslot bottom of groove, and the one end of fore-set is established on the liftout plate, and the other end of fore-set alternates in the bottom plate, and when cope match-plate pattern and lower bolster lock were in the same place, the other end of fore-set supported by the bottom at the cope match-plate pattern. From this, after the completion of moulding plastics, through-hole on the bottom plate can drive the fore-set simultaneous movement with the liftout plate jack-up in leading to the groove, and the fore-set can be with cope match-plate pattern jack-up to make cope match-plate pattern and lower bolster separation, promptly: the upper die core and the lower die core are separated, so that a formed workpiece can be taken out, when injection molding is needed, the jacking plate is withdrawn by the jacking acting force, the jacking plate is reset, the jacking plate drives the jacking columns to synchronously move in the opposite direction, and the upper die plate and the lower die plate are buckled together again.

In some embodiments, the ejector plate can further comprise a plurality of guide columns, one ends of the guide columns are arranged at the bottom of the lower template, the other ends of the guide columns are inserted into the ejector plate, and the ejector plate can slide back and forth along the guide columns. Therefore, the ejector plate can move in a reciprocating manner more smoothly due to the guide columns, and cannot jump.

In some embodiments, the device can further comprise four pneumatic columns, a plurality of annular grooves are axially formed in the pneumatic columns, one ends of the pneumatic columns are inserted into the lower template, the other ends of the pneumatic columns sequentially penetrate through the ejector plate and the lower fixing plate, and the ejector plate can slide in a reciprocating mode along the pneumatic columns. From this, annular groove's on the pneumatic column existence can make ejector plate reciprocating motion when more gentle, especially when the ejector plate resets, can reduce the clash of ejector plate to the bottom plate, both can prolong the life of ejector plate and bottom plate, also can reduce the noise that the ejector plate clashed the bottom plate and produced.

In some embodiments, the lower template may have a positioning protrusion on an end surface contacting the upper template, the upper template may have a positioning recess on an end surface contacting the lower template, and when the upper template and the lower template are fastened together, the positioning protrusion on the lower template is inserted into the positioning recess on the upper template. From this, the grafting cooperation of location arch and location concave part can ensure that cope match-plate pattern and lower bolster lock can not appear the skew when being in the same place, guarantees that the lower mould benevolence on last mould benevolence and the lower mould benevolence on the lower bolster on the cope match-plate pattern can accurate lock be in the same place, ensures the quality of moulding plastics of work piece.

Drawings

FIG. 1 is a schematic structural view of a hot runner mold according to one embodiment of the present invention;

FIG. 2 is a schematic view of the hot runner mold shown in FIG. 1 in a disassembled configuration;

FIG. 3 is a schematic structural view of an upper stationary plate, a hot runner mold plate, and an upper mold plate assembly of the hot runner mold shown in FIG. 1;

FIG. 4 is a side view of the hot runner mold shown in FIG. 1;

FIG. 5 is a side view of the hot runner mold shown in FIG. 1.

In the figure: 11. a splitter plate A; 12. a flow distribution plate B; 13. a feed inlet; 14. a positioning ring; 21. heating a pipe A; 22. heating a pipe B; 23. a hot nozzle A; 24. a hot nozzle B; 31. mounting a template; 311. a positioning recess; 312. punching a hole A; 313. a connecting hole B; 32. an upper die core; 321. punching a hole B; 41. a lower template; 42. a lower die core; 411. positioning the projection; 412. a connecting hole A; 413. an ejection aperture; 414. connecting columns; 5. a socket; 6. a hot runner template; 61. a wire groove A; 62. a wire groove B; 63. a fixing sheet A; 64. a fixing sheet B; 7. a lower fixing plate; 71. a through groove; 72. a bolt A; 73. a through hole; 8. ejecting the plate; 9. a top pillar; 10. a guide post; 100. a pneumatic column; 1001. an annular groove; 101. an upper fixing plate; 1011. and B, a bolt B.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Fig. 1 to 5 schematically show the structure of a hot runner mold according to an embodiment of the present invention.

Referring to fig. 1 to 5, a hot runner mold includes a hot runner, a heating member, an upper plate assembly, and a lower plate assembly. In addition, the hot runner mold may further include a socket 5, a hot runner mold plate 6, a lower fixing plate 7, an ejector plate 8, a top post 9, a guide post 10, a pneumatic post 100, and an upper fixing plate 101.

Referring to fig. 2, the hot runner includes a splitter plate a11 and a splitter plate B12, a feeding port 13 is formed on the hot runner, a cavity of the splitter plate a11 is communicated with a cavity of the splitter plate B12, the splitter plate a11 and the splitter plate B12 are symmetrically arranged with respect to the feeding port 13, molten plastic can flow into the cavity of the splitter plate a11 after passing through the feeding port 13, and meanwhile, molten plastic can flow into the cavity of the splitter plate B12 after passing through the feeding port 13.

Referring to fig. 2, in the present embodiment, the flow dividing plate a11 and the flow dividing plate B12 are both T-shaped. In other embodiments, the shape of the diverter plate a11 and diverter plate B12 may be adapted to the shape of the workpiece.

Referring to fig. 2, the heating parts include a heating pipe a21 and a heating pipe B22; the upper end face and the lower end face of the flow distribution plate A11 are both provided with heating pipes A21, the heating pipes A21 on the upper end face of the flow distribution plate A11 are sunk in the flow distribution plate A11, namely, the upper end face of the heating pipe A21 is flush with the upper end face of the flow distribution plate A11, the heating pipes A21 on the lower end face of the flow distribution plate A11 are also sunk in the flow distribution plate A11, namely, the lower end face of the heating pipe A21 is flush with the lower end face of the flow distribution plate A11, the heating pipes B22 are arranged on the upper end face and the lower end face of the flow distribution plate B12, the heating pipes B22 on the upper end face of the flow distribution plate B12 are sunk in the flow distribution plate B12, namely, the upper end face of the heating pipe B22 is flush with the upper end face of the flow distribution plate B12, and the heating pipes B22 on the lower end face of the flow distribution plate B12 are also sunk in the flow distribution. Heating pipes A21 are distributed on the upper end face and the lower end face of the flow distribution plate A11, so that plastics in the flow distribution plate A11 can be effectively kept in a molten state, heating pipes B22 are distributed on the upper end face and the lower end face of the flow distribution plate B12, so that plastics in the flow distribution plate B12 can be effectively kept in a molten state, the heating pipes A21 sink in the flow distribution plate A11, so that the heat transfer efficiency can be effectively improved, the movement of the heating pipes A21 can be prevented, the heating of the flow distribution plate A11 is influenced, the heating pipes A21 can be protected, the flow distribution plate A11 is conveniently matched and connected with other parts, the heating pipes B22 sink in the flow distribution plate B12, the heat transfer efficiency can be effectively improved, the movement of the heating pipes B22 can be prevented, the heating of the flow distribution plate B12 is influenced, the heating pipes B22 can be protected, and the flow distribution plate B12 is conveniently matched.

Referring to fig. 2, splitter plate a11 is provided with two hot tips a23, the bottom of splitter plate a11 is formed with two outlets (not shown), each outlet is provided with one hot tip a23, two hot tips a23 are respectively located at two free ends of splitter plate a11, and hot tip a23 is communicated with the inner cavity of splitter plate a11 through the outlets; two hot nozzles B24 are arranged on the flow distribution plate B12, two discharge ports (not shown) are formed at the bottom of the flow distribution plate B12, one hot nozzle B24 is arranged on each discharge port, the two hot nozzles B24 are respectively positioned at two free ends of the flow distribution plate B12, and the hot nozzles B24 are communicated with an inner cavity of the flow distribution plate B12 through the discharge ports. Can mould plastics through flow distribution plate A11 and flow distribution plate B12 to two work pieces in step, two work pieces can be the same work piece, also can be the preceding shell and the backshell of a product, in addition, it can generate heat alone to chew A23 and hot B24 of chewing, it all keeps the molten condition effectively to guarantee the plastics in the whole runner, moreover, the pressure distribution that hot A23 and hot B24 of chewing is balanced, it is smooth and easy to go out to glue, the equilibrium is good, can realize that the product evenly fills, guarantee that the product precision is stable.

Referring to fig. 2, the splitter plate a11 and the splitter plate B12 are both recessed in the hot runner template 6, that is, a cavity is formed in the hot runner template 6 to accommodate the splitter plate a11 and the splitter plate B12, and the shape of the cavity corresponds to the shapes of the splitter plate a11 and the splitter plate B12, so that the hot runner template 6 can protect the splitter plate a11 and the splitter plate B12, and facilitate the mating connection of the hot runner template 6 with other components.

Referring to fig. 2, a wire casing a61 and a wire casing B62 are formed on a hot runner template 6, both the wire of a heating pipe a21 and the wire of two hot taps a23 can be accommodated in the wire casing a61, both the wire of a heating pipe B22 and the wire of two hot taps B24 can be accommodated in the wire casing B62, a socket 5 is installed at a side of the hot runner template 6, the socket 5 is connected with the heating pipe a21, the socket 5 is connected with the heating pipe B22, the socket 5 is connected with the hot tap a23, the socket 5 is connected with the hot tap B24, wire harnesses among the socket 5, the heating pipe a21, the heating pipe B22, the hot tap a23 and the hot tap B24 are accommodated in the wire casing a61 and the wire casing B62, and the wire casing a61 and the wire casing B62 can accommodate and protect the wire harnesses, so that the hot runner template 6 is.

Referring to fig. 2, a fixing plate a63 is installed on the top of the wire groove a61, and one end of the fixing plate a63 is detachably connected with the hot runner template 6, such as: the fixing plate is fixed on the hot runner template 6 through screws or can be arranged on the hot runner template 6 through a turnover buckle, and the other end of the fixing plate A63 is suspended at the top of the wire groove A61; seven fixing plates B64 are installed at the top of the wire groove B62, and one end of each fixing plate B64 is detachably connected with the hot runner template 6, such as: the fixing plate is fixed on the hot runner template 6 through screws or can be arranged on the hot runner template 6 through a turnover buckle, and the other end of the fixing plate B64 is suspended at the top of the wire groove B62; the fixing piece A63 can fix the bunch of the heating pipe A21 and the bunch of the heat mouth A23, prevent the bunch of the heating pipe A21 and the bunch of the heat mouth A23 from tilting, and effectively protect the bunch of the heating pipe A21 and the bunch of the heat mouth A23; the fixing piece B64 can fix the bunch of heating pipe B22 and the bunch of heat mouth B24, prevent the bunch of heating pipe B22 and the bunch of heat mouth B24 from tilting, and can effectively protect the bunch of heating pipe B22 and the bunch of heat mouth B24.

Referring to fig. 2, when manifold a11 and manifold B12 are recessed in hot runner template 6, both hot tips a23 on manifold a11 and both hot tips B24 on manifold B12 extend through hot runner template 6 and protrude from the bottom of hot runner template 6.

Referring to fig. 2, the upper plate assembly includes an upper plate 31 and an upper core 32, the upper plate 31 is installed at the bottom of the hot runner template 6 (refer to fig. 1), the upper core 32 is embedded in a cavity at the bottom of the upper plate 31, the lower plate assembly includes a lower plate 41 and a lower core 42, and the lower core 42 is embedded in a cavity at the top of the lower plate 41; when the upper template 31 and the lower template 41 are buckled together, the upper mold core 32 and the lower mold core 42 are also buckled together, and an inner cavity of an injection molding workpiece is formed.

Referring to fig. 2, when diverter plate a11 and diverter plate B12 are recessed in hot runner mold plate 6, both hot nozzles a23 pass through hot runner mold plate 6, through hole a312 in upper mold plate 31, through hole B321 in upper core 32, the tip of hot nozzle a23 communicates with the cavity formed between upper core 32 and lower core 42, both hot nozzles B24 pass through hot runner mold plate 6, through hole a312 in upper mold plate 31, through hole B321 in upper core 32, and the tip of hot nozzle B24 communicates with the cavity formed between upper core 32 and lower core 42. In this embodiment, the inner cavities of the injection molding workpieces comprise two inner cavities, the mouth heads of the two hot mouths a23 are communicated with one inner cavity between the upper mold core 32 and the lower mold core 42, and the mouth heads of the two hot mouths B24 are communicated with the other inner cavity between the upper mold core 32 and the lower mold core 42, so that the two workpieces are synchronously injected.

Referring to fig. 2, the upper ends of the connecting posts 414 sequentially pass through the connecting holes a412 on the lower template 41 and the connecting holes B313 on the upper template 31, when the upper template 31 and the lower template 41 are fastened together (in the state shown in fig. 1), the upper end surfaces of the connecting posts 414 are flush with the upper end surface of the upper template 31, the upper template 31 can slide up and down along the connecting posts 414, the number of the connecting posts 414 is four, and the four connecting posts 414 are distributed at four corners of the lower template 41.

Referring to fig. 3, four positioning recesses 311 are formed on the end surface of the upper template 31 contacting the lower template 41, referring to fig. 2, four positioning protrusions 411 are installed on the end surface of the lower template 41 contacting the upper template 31, the four positioning protrusions 411 match with the four positioning recesses 311 in shape and correspond in position, and when the upper template 31 and the lower template 41 are fastened together (in the state shown in fig. 1), the four positioning protrusions 411 on the lower template 41 are respectively inserted into the four positioning recesses 311 on the upper template 31; the insertion fit of the positioning protrusion 411 and the positioning recess 311 can ensure that the upper template 31 and the lower template 41 are not deviated when being fastened together, ensure that the upper mold core 32 on the upper template 31 and the lower mold core 42 on the lower template 41 can be accurately fastened together, and ensure the injection molding quality of the workpiece. In other embodiments, the positions of the positioning recess 311 and the positioning protrusion 411 may be interchanged. In addition, a convex column can be arranged on the end surface of the upper template 31, which is contacted with the lower template 41, and a concave part matched with the convex column is arranged on the end surface of the lower template 41, which is contacted with the upper template 31, so that when the upper template 31 and the lower template 41 are buckled together, the convex column on the upper template 31 is inserted into the concave part on the lower template 41, and further, the upper template 31 and the lower template 41 are buckled together, and the deviation is avoided.

Referring to fig. 1 and 5, the lower mold plate 41 is mounted on the lower fixing plate 7, the lower fixing plate 7 has a U shape, the lower fixing plate 7 includes two longitudinal beams and a cross beam, the two longitudinal beams and the cross beam form the lower fixing plate 7 having a U shape, and a plurality of bolts a72 are screwed into the lower mold plate 41 through the longitudinal beams of the lower fixing plate 7, thereby fixing the lower mold plate 41 to the lower fixing plate 7.

Referring to fig. 1 and 5, since the lower fixing plate 7 is U-shaped, a through groove 71 is left on the lower fixing plate 7, the ejector plate 8 is accommodated in the through groove 71, the width of the ejector plate 8 is slightly smaller than that of the through groove 71, and the length of the ejector plate 8 is equivalent to that of the through groove 71; referring to fig. 4, two through holes 73 are formed on the bottom of the through groove 71; referring to fig. 2, the lower end of the top pillar 9 is fixed on the ejector plate 8, the upper end of the top pillar 9 is inserted into the ejection hole 413 of the lower template 41, when the upper template 31 and the lower template 41 are fastened together, the upper end of the top pillar 9 abuts against the bottom of the upper template 31, that is, when the upper template 31 and the lower template 41 are fastened together, the upper end of the top pillar 9 is flush with the upper end face of the lower template 41; the outer diameter of the top pillar 9 is slightly smaller than the inner diameter of the top hole 413, so that the top pillar 9 can slide up and down in the top hole 413 of the lower die plate 41. Referring to fig. 2, in the present embodiment, the number of the top pillars 9 is four, and four top pillars 9 are distributed at four corners of the ejector plate 8, so as to ensure balanced stress.

Referring to fig. 4 and 5, after the workpiece is injected, the ejecting plate 8 in the through groove 71 can be ejected through the two through holes 73 on the lower fixing plate 7, the ejecting plate 8 drives the four ejecting pillars 9 to move synchronously, the four ejecting pillars 9 move upwards in the four ejecting holes 413 on the lower mold plate 41, and the four ejecting pillars 9 can eject the upper mold plate 31, so that the upper mold plate 31 and the lower mold plate 41 are separated, that is: go up mould benevolence 32 and lower mould benevolence 42 separation, at this moment, can take out the work piece after the shaping, when need moulding plastics again, withdraw ejector plate 8 by the effort of jack-up, ejector plate 8 resets, ejector plate 8 drives the synchronous opposite direction motion of four fore-set 9, four fore-set 9 downstream in four ejection holes 413 on lower bolster 41, when ejector plate 8 resets completely (the state shown in fig. 5), the upper end of four fore-set 9 is parallel and level with the up end of lower bolster 41, at this moment, cope match-plate pattern 31 and lower bolster 41 are buckled again together, go up mould benevolence 32 and lower mould benevolence 42 and buckle again together.

Referring to fig. 2 and 5, a plurality of guide posts 10 are installed between the lower die plate 41 and the beam of the lower fixing plate 7, the upper ends of the guide posts 10 are fixed at the bottom of the lower die plate 41, the lower ends of the guide posts 10 penetrate through the ejector plate 8 and penetrate through the beam of the lower fixing plate 7, the ejector plate 8 can slide up and down along the guide posts 10 in a reciprocating manner, when a workpiece is molded by injection to complete the mold stripping, the ejector plate 8 can move up and down in a reciprocating manner more smoothly due to the existence of the guide posts 10, and the workpiece cannot jump.

Referring to fig. 2 and 4, a pneumatic column 100 is further installed between the lower template 41 and the beam of the lower fixing plate 7, the upper end of the pneumatic column 100 sequentially penetrates through the beam of the lower fixing plate 7 and the ejector plate 8 and is inserted into the lower template 41, the ejector plate 8 can slide up and down along the pneumatic column 100 in a reciprocating manner, the number of the pneumatic columns 100 is four, and the four pneumatic columns 100 are distributed at four corners of the ejector plate 8, so that the stress balance of the ejector plate 8 is ensured.

Referring to fig. 2, a plurality of annular grooves 1001 are formed on the pneumatic column 100 along the axial direction, and the plurality of annular grooves 1001 are uniformly distributed along the length direction of the pneumatic column 100. When the ejector plate 8 slides up and down along the pneumatic column 100 in a reciprocating manner, the existence of the annular groove 1001 can enable the ejector plate 8 to move in a reciprocating manner more gently, and particularly when the ejector plate 8 is reset, the collision of the ejector plate 8 on a cross beam of the lower fixing plate 7 can be reduced, so that the service lives of the ejector plate 8 and the lower fixing plate 7 can be prolonged, and the noise generated when the ejector plate 8 collides with the lower fixing plate 7 can be reduced.

Referring to fig. 1 and 2, an upper fixing plate 101 is installed on the top of the hot runner mold plate 6, and a plurality of bolts B1011 are sequentially inserted through the upper fixing plate 101 and the hot runner mold plate 6 and screwed into the upper mold plate 31, thereby fixing the upper fixing plate 101, the hot runner mold plate 6, and the upper mold plate 31 together.

Referring to fig. 1, a positioning ring 14 is mounted on the upper fixing plate 101, and a feeding port 13 on the hot runner is located in the positioning ring 14, and the positioning ring 14 can facilitate the feeding port of the injection molding machine to be accurately butted against the feeding port 13.

In the invention, the heat generated by the two layers of heating pipes A21 on the flow distribution plate A11 can ensure that the plastic in the flow distribution plate A11 is kept in a molten state, the heat generated by the two layers of heating pipes B22 on the flow distribution plate B12 can ensure that the plastic in the flow distribution plate B12 is kept in a molten state, meanwhile, the two heat nozzles A23 on the flow distribution plate A11 and the two heat nozzles B24 on the flow distribution plate B12 can independently heat, the plastic in the whole flow passage can be effectively kept in a molten state, thereby improving the injection molding quality, ensuring the surface attractiveness of an injection molded product to be better, avoiding the phenomena of wire drawing and leakage due to the non-open hot runner, improving the surface quality of the injection molded product, avoiding the post-processing of workers, balancing the pressure distribution of the heat nozzles A23 and the heat nozzles B24, smoothly discharging glue, balancing, realizing the uniform filling of the product and ensuring the stable precision of the product; the socket 5 is connected with a power supply control line in an inserted mode, power can be supplied to the heating pipe A21, the heating pipe B22, the hot nozzle A23 and the hot nozzle B24, the work/stop of the heating pipe A21, the heating pipe B22, the hot nozzle A23 and the hot nozzle B24 can be controlled, when a die is not used, the power supply control line is pulled out, and the die is convenient to store and place; after the work piece is moulded plastics and is accomplished, will knock out 8 liftings through two through-holes 73, knock out 8 drives four fore-set 9 synchronous motion, four fore-set 9 jack up cope match-plate pattern 31, thereby make the separation of mould benevolence 32 and lower mould benevolence 42, at this moment, can take out the work piece after the shaping, when need moulding plastics again, cancel 8 effort by the jack-up of knock out, 8 reset of knock out, 8 of knock out drive four fore-set 9 synchronous opposite direction motions of knock out, when 8 of knock out reset completely, go up mould benevolence 32 and lower mould benevolence 42 and detain together again. The invention has simple structure, can improve the injection molding quality and effectively reduce the production cost.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.

Claims

1. A hot runner mold is characterized by comprising a hot runner, a heating component, an upper plate component and a lower plate component,

the heating component is arranged on a hot runner, the hot runner is provided with a feed inlet and a discharge outlet, the hot runner is arranged on the upper template component,

the upper die plate component comprises an upper die plate and an upper die core, the upper die core is arranged on the upper die plate,

the lower template component comprises a lower template and a lower mold core, the lower mold core is arranged on the lower template,

when the upper template and the lower template are buckled together, the discharge hole on the hot runner is communicated with the inner cavity formed between the upper mold core and the lower mold core.

2. The hot-runner mold according to claim 1, wherein the hot runner includes a splitter plate A and a splitter plate B, the splitter plate A and the splitter plate B are communicated and symmetrically arranged about the feed inlet, at least one hot nozzle A is arranged on the splitter plate A, the hot nozzle A is communicated with the inner cavity of the splitter plate A, at least one hot nozzle B is arranged on the splitter plate B, the hot nozzle B is communicated with the inner cavity of the splitter plate B,

when the upper template and the lower template are buckled together, the mouth head of the hot mouth A is communicated with an inner cavity formed between the upper mold core and the lower mold core, and the mouth head of the hot mouth B is communicated with an inner cavity formed between the upper mold core and the lower mold core.

3. The hot-runner mold according to claim 2, wherein the heating members include heating tubes a and heating tubes B, the heating tubes a being distributed along the upper and lower end surfaces of the manifold a, and the heating tubes B being distributed along the upper and lower end surfaces of the manifold B.

4. The hot-runner mold according to claim 3, wherein the heating tubes A on the upper end face of the manifold A are recessed in the manifold A, the heating tubes A on the lower end face of the manifold A are recessed in the manifold A, the heating tubes B on the upper end face of the manifold B are recessed in the manifold B, and the heating tubes B on the lower end face of the manifold B are recessed in the manifold B.

5. The hot-runner mold according to claim 3, further comprising a hot-runner template, wherein the hot-runner template is disposed on the upper template, the splitter plate A and the splitter plate B are both submerged in the hot-runner template, the hot-runner template is provided with a raceway A for accommodating a circuit of the heating tube A, the hot-runner template is provided with a raceway B for accommodating a circuit of the heating tube B,

when the upper template and the lower template are buckled together, the nozzle head of the hot nozzle A penetrates through the hot runner template and the upper template and is communicated with an inner cavity formed between the upper mold core and the lower mold core, and the nozzle head of the hot nozzle B penetrates through the hot runner template and the upper template and is communicated with an inner cavity formed between the upper mold core and the lower mold core;

preferably, the hot runner template is provided with a socket, the socket is connected with the heating pipe A, the socket is connected with the heating pipe B, the socket is connected with the hot nozzle A, and the socket is connected with the hot nozzle B.

6. The hot runner mold according to claim 5, wherein at least one securing tab A is provided at a top of the wire chase A, the securing tab A being removably coupled to the hot runner form, and at least one securing tab B is provided at a top of the wire chase B, the securing tab B being removably coupled to the hot runner form.

7. The hot runner mold according to any one of claims 1 to 6, further comprising a lower fixing plate, an ejector plate, and a plurality of pillars, wherein the lower fixing plate is provided on the lower fixing plate, the lower fixing plate is provided with a through groove, the ejector plate is accommodated in the through groove, the through groove is provided at an inner bottom thereof with a plurality of through holes, one end of the pillar is provided on the ejector plate, the other end of the pillar is inserted into the lower fixing plate,

when the upper template and the lower template are buckled together, the other end of the top column abuts against the bottom of the upper template.

8. The hot runner mold of claim 7, further comprising a plurality of guide posts, one ends of the guide posts being disposed at a bottom of the lower platen, the other ends of the guide posts being inserted into the ejector plate, the ejector plate being reciprocally slidable along the guide posts.

9. The hot runner mold according to claim 7, further comprising four pneumatic columns, wherein a plurality of annular grooves are axially formed in the pneumatic columns, one ends of the pneumatic columns are inserted into the lower mold plate, the other ends of the pneumatic columns sequentially penetrate through the ejector plate and the lower fixing plate, and the ejector plate is capable of sliding back and forth along the pneumatic columns.

10. The hot runner mold according to any one of claims 1 to 6, wherein a positioning protrusion is provided on an end surface of the lower mold plate contacting the upper mold plate, a positioning recess is provided on an end surface of the upper mold plate contacting the lower mold plate,

when the upper template and the lower template are buckled together, the positioning bulge on the lower template is inserted in the positioning concave part on the upper template.