CN220720192U

CN220720192U - Injection mold capable of improving cooling effect

Info

Publication number: CN220720192U
Application number: CN202322464153.9U
Authority: CN
Inventors: 盛伟军; 易佳文; 程建文
Original assignee: Dongguan Topview Plastic Mfg Co ltd
Current assignee: Dongguan Topview Plastic Mfg Co ltd
Priority date: 2023-09-11
Filing date: 2023-09-11
Publication date: 2024-04-05
Anticipated expiration: 2033-09-11

Abstract

The utility model relates to an injection mold for improving cooling effect in the technical field of molds, which comprises a movable mold assembly and a fixed mold assembly, wherein the movable mold assembly comprises a top plate, a cavity fixing plate and a cavity, the fixed mold assembly comprises a core fixing plate, a core and a bottom plate, a heat dissipation groove is formed in the core, a temperature conducting plate for auxiliary cooling of the core is connected to the inner surface of the heat dissipation groove, and a cooling structure is arranged in the temperature conducting plate; when the mold core is required to be cooled to enable a product formed on the surface of the mold core to be demolded, a pipeline of an external liquid nitrogen storage tank is connected through an air inlet, so that liquid nitrogen gas enters the air inlet runner through the air inlet, the mold core is cooled, and cold demolding of the product is facilitated; the structure of air flow cooling is added during molding, the mode that the heating plate heats the demolding part is improved, the molding time of plastic products is kept, and the phenomenon that the plastic products are demolded when the plastic products do not reach the optimal hardness is avoided, so that the products are scrapped is avoided.

Description

Injection mold capable of improving cooling effect

Technical Field

The utility model relates to the technical field of molds, in particular to an injection mold capable of improving cooling effect.

Background

The mould is a variety of moulds and tools used for injection moulding, blow moulding, extrusion, die casting or forging, smelting, stamping and other methods in industrial production to obtain the required products. A mold is a tool for making a molded article, which is composed of various parts, and different molds are composed of different parts. The processing of the appearance of the article is realized mainly by changing the physical state of the formed material. The term "industrial mother" is used.

Injection molding is a method for producing and shaping industrial products. Products are generally molded by rubber injection molding and plastic injection molding, and can be molded by injection molding and compression molding; injection molding is a process used in mass production of parts of complex shape. The method specifically comprises the steps of injecting heated and melted plastic into a die cavity under high pressure by an injection molding machine, and cooling and solidifying to obtain a formed product, wherein the injection molding die is a tool for producing plastic products; is also a tool for endowing plastic products with complete structure and precise dimensions.

The current chinese patent of bulletin number CN216001271U that can consult discloses quick injection mold, including cover half bedplate, fixed die plate, movable mould board, push pedal, push rod fixed plate and movable mould bedplate, the cover half bedplate top is equipped with a plurality of first screw, and the fixed die plate passes through first screw and installs in cover half bedplate bottom surface, the injection runner has been seted up to cover half bedplate top surface, has seted up the die cavity in the fixed die plate, and the die cavity is connected with the injection runner, the die cavity periphery is equipped with the heating plate, and the heating plate is installed on the fixed die plate, and the wire is installed to heating plate one end, the movable mould board bottom is equipped with a plurality of second screw, and the movable mould board passes through the second screw and installs in the movable mould bedplate top, two ejecting holes have been seted up in the movable mould bedplate, and the mold core comprises plastics, and the push pedal is installed at movable mould bedplate top surface, and the push pedal bottom surface is equipped with a plurality of ejecting plate screw, and the push rod fixed plate is installed at the push pedal top surface through ejecting plate screw, and the ejector pin extends into the movable mould board.

Although the patent has the effect of quick injection molding, the plastic product is not provided with a related structure for assisting the product to perform cold demolding, the demolding part is heated by adopting a heating plate, so that the effect of preventing the product from sticking is achieved, the method also increases the molding time of the plastic product, and the plastic product is demolded when the plastic product does not reach the optimal hardness due to the fact that the plastic product needs to reach the optimal hardness by adopting the heating plate for heating, so that the product is scrapped, therefore, when the plastic product is used, the structure of the plastic product needs to be further processed and improved, the working procedure is increased, the working efficiency is reduced, and the inventor provides an injection mold for improving the cooling effect, so that the technical problem of performing cold demolding on the proposed auxiliary product is solved.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a technical scheme capable of solving the problems.

The utility model provides an improve cooling effect's injection mold, includes movable mould subassembly and cover half subassembly, movable mould subassembly includes roof, die cavity fixed plate and die cavity, the one end of roof is laminated with the one end of die cavity fixed plate, the die cavity is located the inside of die cavity fixed plate, the cover half subassembly includes core fixed plate, core and bottom plate, the surface in the core fixed plate is installed to the core, be equipped with ejecting subassembly between core fixed plate and the bottom plate, the radiating groove has been seted up to the inside of core, the internal surface in radiating groove is connected with and is used for carrying out auxiliary cooling's to the core temperature-sensing piece, the temperature-sensing piece plays simultaneously and carries out the effect of supporting to the inside of core, the inside of temperature-sensing piece is equipped with and is used for carrying out auxiliary cooling's cooling structure to the core.

Further, ejecting subassembly includes ejector pin and thimble fixed plate, and the one end of thimble fixed plate is laminated with the one end of core fixed plate, and the ejector pin runs through the surface of thimble fixed plate and core fixed plate respectively, and extends to the inside of core, when the mould die sinking, applys effort through the ejector pin to the fashioned goods to make the ejector pin promote the goods, make the goods break away from the surface of core.

Further, one end of the ejector rod is connected with a base plate, one end of the base plate is attached to the surface of the bottom plate, a cushion block is arranged between the ejector pin fixing plate and the bottom plate, the cushion block is symmetrically arranged at two ends of the bottom plate and used for supporting the bottom of the ejector rod, and meanwhile the function of limiting one end position of the ejector rod is achieved through the cushion block.

Further, the surface of roof has been offered and has been used for assisting the fashioned mouth of moulding plastics of pouring product, the middle part of moulding plastics the mouth is connected with the pipeline of moulding plastics, the one end of pipeline of moulding plastics runs through roof and die cavity fixed plate in proper order, and extend to the inside of die cavity, the surface of die cavity is equipped with the runner of moulding plastics that pairs with the pipeline of moulding plastics and use, the pouring head of outside injection molding machine is connected through the mouth of moulding plastics, when outside injection molding machine pours into, the inside of pipeline of moulding plastics is got into through the mouth of moulding plastics, then shunt the plastics of molten state through the runner of moulding plastics, make the plastics of molten state get into the inside of die cavity, accomplish the process of moulding plastics.

Further, the surface of core fixed plate is equipped with the guide pillar that is used for assisting the mould to open and shut, and the guide pin bushing that matches the use with the guide pillar is offered to the inside of die cavity fixed plate, and the guide pillar rectangle distributes in the surface of core fixed plate, and guide pillar and guide pin bushing are coaxial setting, and the guide pin bushing can slide along the surface of guide pillar, and the movable range of guide pin bushing is injectd through the guide pillar, avoids the phenomenon that the overtravel appears when mould die sinking or the compound die, plays the effect of location through guide pin bushing and guide pillar simultaneously, makes the mould carry out accurate die sinking or compound die process.

Further, the cooling structure includes air inlet channel, water conservancy diversion runner and runner, the one end of air inlet channel runs through to the surface of core, the one end and the runner of water conservancy diversion runner link up, the runner of water conservancy diversion distributes in the both ends of water conservancy diversion runner, and link up with the runner of water conservancy diversion, the gas outlet has been seted up to the one end of temperature conducting strip, the surface of core is run through to the one end of gas outlet, the other end and the runner of gas outlet link up, the one end of air inlet is the air inlet, the surface of core is run through to the one end of air inlet, the air inlet is used for connecting the pipeline of outside liquid nitrogen storage tank, when the product that the core was cooled down and core surface shaping was carried out the drawing of patterns, connect the pipeline of outside liquid nitrogen storage tank through the air inlet, make liquid nitrogen gas get into the inside of air inlet channel, thereby cool down the core, the cold drawing of patterns is carried out to the product.

Further, the water gap used for leading-in liquid and discharging liquid is formed in the cavity fixing plate and the core fixing plate, the water gap penetrates through the surfaces of the two ends of the cavity fixing plate and the core fixing plate, water flow is led in through the water gap to enable the cavity fixing plate and the core fixing plate to be cooled, the cooling effect on the cavity fixing plate and the core fixing plate is achieved, and then water flow is discharged through the water gap to enable the liquid with temperature in the cavity fixing plate and the core fixing plate to be discharged out of the cavity fixing plate and the core fixing plate.

Compared with the prior art, the utility model has the beneficial effects that: when the mold core is required to be cooled to enable a product formed on the surface of the mold core to be demolded, a pipeline of an external liquid nitrogen storage tank is connected through an air inlet, so that liquid nitrogen gas enters the air inlet runner through the air inlet, the mold core is cooled, and cold demolding of the product is facilitated;

in addition, the structure that the air outlet is smaller than the diameter of the air inlet flow channel is adopted, so that liquid nitrogen gas staying in the air inlet flow channel can sufficiently cool the core, one end of the diversion flow channel is communicated with the air inlet flow channel, the diversion flow channel is distributed at two ends of the diversion flow channel and communicated with the diversion flow channel, and the air inlet flow channel, the diversion flow channel and the diversion flow channel form a tree shape, so that the cooling effect of the core is sufficiently achieved;

the structure of air flow cooling is added during molding, the mode that the heating plate heats the demolding part is improved, the molding time of plastic products is kept, and the phenomenon that the plastic products are demolded when the plastic products do not reach the optimal hardness is avoided, so that the products are scrapped is avoided.

Drawings

FIG. 1 is a perspective view of an injection mold with improved cooling;

FIG. 2 is a front view exploded view of an injection mold for improving cooling effect;

FIG. 3 is an exploded isometric view of an injection mold with enhanced cooling;

FIG. 4 is another isometric exploded view of an injection mold with enhanced cooling;

FIG. 5 is a schematic perspective view of a core in an injection mold for improving cooling effect;

FIG. 6 is a schematic diagram showing a front view of a core in an injection mold for improving cooling effect;

FIG. 7 is a block diagram of a temperature-conducting strip in an injection mold for improving cooling effect;

in the figure: the mold comprises a top plate-1, a cavity fixing plate-2, a cavity-3, a core fixing plate-4, a core-5, a bottom plate-6, a heat dissipation groove-7, a temperature conducting sheet-8, a top rod-9, a top pin fixing plate-10, a base plate-11, a cushion block-12, an injection molding port-13, an injection molding pipeline-14, an injection molding runner-15, a guide pillar-16, a guide sleeve-17, an air inlet runner-18, a water gap-19, a diversion runner-20, a diversion runner-21, an air outlet-22 and an air inlet-23.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the detailed description.

Referring to fig. 1-7, an injection mold for improving cooling effect specifically implemented by the injection mold comprises a movable mold assembly and a fixed mold assembly, wherein the movable mold assembly comprises a top plate 1, a cavity fixing plate 2 and a cavity 3, one end of the top plate 1 is attached to one end of the cavity fixing plate 2, the cavity 3 is located inside the cavity fixing plate 2, the fixed mold assembly comprises a core fixing plate 4, a core 5 and a bottom plate 6, the core 5 is mounted on the surface of the core fixing plate 4, an ejection assembly is arranged between the core fixing plate 4 and the bottom plate 6, a heat dissipation groove 7 is formed in the core 5, a temperature conducting plate 8 for assisting cooling of the core 5 is connected to the inner surface of the heat dissipation groove 7, the temperature conducting plate 8 plays a role of supporting the core 5 at the same time, and a cooling structure for assisting cooling of the core 5 is arranged inside the temperature conducting plate 8.

The ejector assembly comprises an ejector rod 9 and an ejector pin fixing plate 10, one end of the ejector pin fixing plate 10 is attached to one end of the core fixing plate 4, the ejector rod 9 penetrates through the surfaces of the ejector pin fixing plate 10 and the core fixing plate 4 respectively and extends to the inside of the core 5, when the die is opened, acting force is applied to a formed product through the ejector rod 9, and therefore the ejector rod 9 pushes the product to separate the product from the surface of the core 5.

One end of the ejector rod 9 is connected with a base plate 11, one end of the base plate 11 is attached to the surface of the bottom plate 6, a cushion block 12 is arranged between the ejector pin fixing plate 10 and the bottom plate 6, the cushion block 12 is symmetrically arranged at two ends of the bottom plate 6 in a structure, the cushion block 12 is used for supporting the bottom of the ejector rod 9, and meanwhile, the function of limiting the position of one end of the ejector rod 9 is achieved through the cushion block 12.

The surface of roof 1 has been seted up and has been used for assisting the fashioned mouth 13 of moulding plastics of pouring product, the middle part of mouth 13 of moulding plastics is connected with the pipeline 14 of moulding plastics, the one end of pipeline 14 of moulding plastics runs through roof 1 and die cavity fixed plate 2 in proper order, and extend to the inside of die cavity 3, the surface of die cavity 3 is equipped with the runner 15 of moulding plastics that pairs with pipeline 14 of moulding plastics and use, connect the pouring head of outside injection molding machine through mouth 13 of moulding plastics, when outside injection molding machine pours into, the inside of pipeline 14 of moulding plastics is got into through mouth 13 of moulding plastics to molten state, then shunt the plastics of molten state through runner 15 of moulding plastics, make molten state plastics get into the inside of die cavity 3, accomplish the process of moulding plastics.

The surface of core fixed plate 4 is equipped with the guide pillar 16 that is used for assisting the mould to open and shut, the guide pin bushing 17 that pairs with guide pillar 16 and use is offered to the inside of die cavity fixed plate 2, guide pillar 16 rectangular distribution is in the surface of core fixed plate 4, guide pillar 16 and guide pin bushing 17 are coaxial setting, guide pin bushing 17 can slide along the surface of guide pillar 16, limit the range of motion of guide pin bushing 17 through guide pillar 16, the phenomenon of overtravel appears when avoiding the mould to open or close the mould, play the effect of location through guide pin bushing 17 and guide pillar 16 simultaneously, make the mould carry out accurate die opening or closing process.

The cooling structure comprises an air inlet runner 18, a flow guide runner 20 and a flow distribution runner 21, one end of the air inlet runner 18 penetrates through the surface of the core 5, one end of the flow guide runner 20 is communicated with the air inlet runner 18, the flow distribution runner 21 is distributed at two ends of the flow guide runner 20 and is communicated with the flow guide runner 20, an air outlet 22 is formed in one end of the temperature conducting plate 8, one end of the air outlet 22 penetrates through the surface of the core 5, the other end of the air outlet 22 is communicated with the air inlet runner 18, one end of the air inlet runner 18 is an air inlet 23, one end of the air inlet 23 penetrates through the surface of the core 5, the air inlet 23 is used for connecting a pipeline of an external liquid nitrogen storage tank, and when a product which is formed on the surface of the core 5 needs to be cooled down, the air inlet 23 is connected with the pipeline of the external liquid nitrogen storage tank, so that liquid nitrogen gas enters the air inlet 23 into the air inlet 18, and therefore the core 5 is cooled down, and the product is convenient to cool and demould.

The inside of die cavity fixed plate 2 and core fixed plate 4 has all been seted up and has been used for leading-in liquid and the mouth of a river 19 of discharging liquid, and mouth of a river 19 all runs through the surface at die cavity fixed plate 2 and core fixed plate 4 both ends, and the leading-in rivers of mouth of a river 19 make die cavity fixed plate 2 and core fixed plate 4 cool down, play the effect of cooling down die cavity fixed plate 2 and core fixed plate 4, then discharge rivers through mouth of a river 19 make the outside of die cavity fixed plate 2 and core fixed plate 4 that the inside liquid that has the temperature of die cavity fixed plate 2 and core fixed plate 4 discharged die cavity fixed plate 2 and core fixed plate 4.

The design key point of the utility model is as follows: when the mold core 5 is required to be cooled to demould a product formed on the surface of the mold core 5, a pipeline of an external liquid nitrogen storage tank is connected through the air inlet 23, so that liquid nitrogen gas enters the air inlet channel 18 through the air inlet 23, the mold core 5 is cooled, and the product is convenient to demould in a cold mode;

the structure that the air outlet 22 is smaller than the diameter of the air inlet runner 18 is adopted, so that liquid nitrogen gas staying in the air inlet runner 18 can sufficiently cool the mold core 5, in addition, one end of the diversion runner 20 is communicated with the air inlet runner 18, the diversion runners 21 are distributed at two ends of the diversion runner 20 and communicated with the diversion runner 20, and the air inlet runner 18, the diversion runner 20 and the diversion runner 20 form a tree shape, so that the mold core 5 is sufficiently cooled.

The foregoing is a further detailed description of the utility model in connection with specific preferred embodiments, and is not intended to limit the practice of the utility model to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the spirit of the utility model, and the scope of the utility model is to be considered as the scope of the utility model.

Claims

1. Injection mold capable of improving cooling effect, comprising a movable mold assembly and a fixed mold assembly, and is characterized in that: the movable die assembly comprises a top plate, a die cavity fixing plate and a die cavity, one end of the top plate is attached to one end of the die cavity fixing plate, the die cavity is located in the die cavity fixing plate, the fixed die assembly comprises a die core fixing plate, a die core and a bottom plate, the die core is arranged on the surface of the die core fixing plate, an ejection assembly is arranged between the die core fixing plate and the bottom plate, a heat dissipation groove is formed in the die core, the inner surface of the heat dissipation groove is connected with a temperature conducting plate used for conducting auxiliary cooling to the die core, and a cooling structure used for conducting auxiliary cooling to the die core is arranged in the temperature conducting plate.

2. An injection mold for improving cooling effect according to claim 1, wherein: the ejector assembly comprises an ejector rod and an ejector pin fixing plate, one end of the ejector pin fixing plate is attached to one end of the core fixing plate, and the ejector rod penetrates through the surfaces of the ejector pin fixing plate and the core fixing plate respectively and extends to the inside of the core.

3. An injection mold for improving cooling effect according to claim 2, characterized in that: one end of the ejector rod is connected with a backing plate, one end of the backing plate is attached to the surface of the bottom plate, a cushion block is arranged between the ejector pin fixing plate and the bottom plate, and cushion block structures are symmetrically arranged at two ends of the bottom plate.

4. An injection mold for improving cooling effect according to any one of claims 1 to 3, characterized in that: the surface of roof has been seted up and has been used for assisting the fashioned mouth of moulding plastics of pouring product, and the middle part of moulding plastics the mouth is connected with the pipeline of moulding plastics, and the one end of pipeline of moulding plastics runs through roof and die cavity fixed plate in proper order, and extends to the inside of die cavity, and the surface of die cavity is equipped with the runner of moulding plastics that pairs with the pipeline of moulding plastics and use.

5. An injection mold for improving cooling effect according to any one of claims 1 to 3, characterized in that: the surface of the core fixing plate is provided with a guide post for assisting the die to open and close, the interior of the cavity fixing plate is provided with a guide sleeve matched with the guide post for use, the guide post is rectangular and distributed on the surface of the core fixing plate, and the guide post and the guide sleeve are coaxially arranged.

6. An injection mold for improving cooling effect according to any one of claims 1 to 3, characterized in that: the cooling structure comprises an air inlet runner, a flow guide runner and a flow distribution runner, wherein one end of the air inlet runner penetrates through the surface of the core, one end of the flow guide runner is communicated with the air inlet runner, the flow distribution runner is distributed at two ends of the flow guide runner and communicated with the flow guide runner, one end of the temperature conducting strip is provided with an air outlet, one end of the air outlet penetrates through the surface of the core, the other end of the air outlet is communicated with the air inlet runner, one end of the air inlet runner is an air inlet, one end of the air inlet penetrates through the surface of the core, and the air inlet is used for connecting a pipeline of an external liquid nitrogen storage tank.

7. An injection mold for improving cooling effect according to any one of claims 1 to 3, characterized in that: the inner parts of the cavity fixing plate and the core fixing plate are respectively provided with a water gap for leading in liquid and discharging liquid, and the water gaps penetrate through the surfaces of the two ends of the cavity fixing plate and the core fixing plate.