CN113119424A

CN113119424A - Low-loss injection mold

Info

Publication number: CN113119424A
Application number: CN202110414947.7A
Authority: CN
Inventors: 包伟忠
Original assignee: Chengdu Guangyiyun Intelligent Equipment Technology Co ltd
Current assignee: Chengdu Guangyiyun Intelligent Equipment Technology Co ltd
Priority date: 2021-04-17
Filing date: 2021-04-17
Publication date: 2021-07-16

Abstract

The invention discloses a low-loss injection mold, belonging to the technical field of molds, wherein heat storage bags for collecting waste heat are arranged at four corners of the bottom end of a mold core, the heat storage bags are connected with the mold core through heat insulation rods, upper heat conductors and lower heat conductors which respectively extend into a conduction seat, the heat storage bags are arranged in the heat insulation rods, before water cooling molding, the lower heat conductors penetrate through a heat insulation plate to be connected with the upper heat conductors by utilizing the magnetic attraction effect, heat is conducted through the upper heat conductors and the lower heat conductors and stored in the heat storage bags, so that heat recovery is realized, preliminary cooling of the mold core is realized, the water cooling operation of a plurality of water cooling pipes is matched, the cooling effect on the mold core is further improved, the cooling molding of a product is realized, in addition, the lower heat conductors are disconnected with the upper heat conductors in the water cooling process, the heat in the heat storage bags can not be dissipated due to the water cooling of the mold core, the heat stored in the heat storage bag can be used for preheating in the next pouring process, so that energy conservation and low loss are realized.

Description

Low-loss injection mold

Technical Field

The invention relates to the technical field of molds, in particular to a low-loss injection mold.

Background

Injection molding, also known as injection molding, is a method of molding by injection and molding. The injection molding method has the advantages of high production speed, high efficiency, automation of operation, various colors, various shapes from simple to complex, small sizes, accurate product size, easy replacement of products, capability of forming products with complex shapes, and suitability for the molding processing fields of mass production, products with complex shapes and the like.

Injection molds are the primary molding equipment for making plastic articles of various shapes from thermoplastic or thermoset materials using plastic molding dies. The injection mold is a tool for endowing a plastic product with a complete structure and an accurate size, and the control of the temperature is very mastered in the injection molding process, including preheating the mold, heating during injection molding, cooling after final molding and the like.

But current injection mold ten minutes power consumptions, mainly embody in the aspect of the heating, owing to need very accurate to the temperature control, consequently need heat through firing equipment when heating, cool down through cooling arrangement during the cooling, often lead to the heat to run off uselessly, the loss is great, when moulding plastics next time, still need heat up again and preheat, is difficult to accomplish energy-conserving low loss well.

Therefore, a low-loss injection mold is provided to effectively solve the problems in the prior art.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a low-loss injection mold, wherein heat storage bags for collecting waste heat are arranged at four corners of the bottom end of a mold core, the heat storage bags are connected with the mold core through heat insulation rods, upper heat conductors and lower heat conductors which respectively extend to a conduction seat, the heat storage bags are arranged in the heat insulation rods, before water-cooling molding, the lower heat conductors penetrate through a heat insulation plate to be connected with the upper heat conductors by utilizing the magnetic attraction effect, heat is conducted through the upper heat conductors and the lower heat conductors and stored in the heat storage bags, heat recovery is realized, preliminary cooling of the mold core is realized, water-cooling operation of a plurality of water-cooling pipes is matched, the cooling effect of the mold core is further improved, the cooling molding of a product is realized, in addition, the lower heat conductors are disconnected with the upper heat conductors during the water-cooling process, the heat in the heat storage bags cannot be caused by the water-cooling of the mold core, the heat stored in the heat storage bag can be used for preheating in the next pouring process, so that energy conservation and low loss are realized.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A low-loss injection mold comprises an upper mold plate and a lower mold plate which are arranged up and down, wherein the upper corner and the lower corner of the lower mold plate are connected with the four corners of the bottom end of the lower mold plate through electric telescopic rods, the upper end of the lower mold plate is provided with a mold core, a mold cavity is arranged in the mold core, the side wall of the upper mold plate is provided with a pouring opening communicated with the mold cavity, the lower mold plate is internally provided with a hollow cavity positioned at the bottom end part of the mold core, the four corners of the bottom end of the mold core are fixedly connected with conduction seats, the outer ends of the conduction seats are connected with heat storage bags through heat insulation rods, the heat insulation rods are fixedly connected with heat insulation plates, the upper end and the lower end of each heat insulation plate are respectively connected with an upper heat conductor and a lower heat conductor, the upper end of each upper heat conductor extends to the inside of the conduction seats, the lower end of each lower heat conductor extends into the, the conduction bases are connected with water-cooled tubes between every two adjacent conduction bases, the water-cooled tubes are connected end to end from front to back, a liquid inlet tube and a water outlet tube are arranged at the outer end of the lower template, the inner end of the liquid inlet tube sequentially penetrates through the lower template and the conduction bases and is fixedly connected with one end of one of the water-cooled tubes, the inner end of the water outlet tube penetrates through the lower template and is connected with the adjacent water-cooled tube, and the liquid inlet tube and the water outlet tube are horizontally arranged.

Furthermore, go up the heat conductor including connecting in the cavity heat conduction core of heat insulating board upper end, the upper end of cavity heat conduction core extends to inside the conduction seat, the top portion of cavity heat conduction core inlays to establish and installs the electromagnetism piece.

Furthermore, the inside of conduction seat is filled with heat conduction fibrous layer, the inside on heat conduction fibrous layer is equipped with a plurality of graphite heat conduction particles, and after the leading-in die cavity to the mold core of hot melt injection molding material, before the cooling shaping, the heat conducts through conduction seat, cavity heat conduction core to heat conductor down to collect the heat in holding the heat bag.

Further, the lower heat conductor comprises an outer heat conducting rod connected to the bottom end of the heat insulation plate, the bottom end of the outer heat conducting rod penetrates through the heat storage bag and is connected to the inner heat conducting ball, the inner heat conducting rod is movably connected to the inside of the outer heat conducting rod, the top end of the inner heat conducting rod is fixedly connected with a heat insulation plug, the top end of the heat insulation plug is provided with a magnetic suction piece matched with the electromagnetic piece, when waste heat is collected, the electromagnetic piece on the hollow heat conducting core is started, the magnetic suction piece on the inner heat conducting rod is magnetically sucked by the electromagnetic piece, the inner heat conducting rod extends into the hollow heat conducting core through the heat insulation plate, and therefore the hollow heat conducting core conducts heat downwards through the inner heat conducting rod.

Furthermore, a heat conducting cavity corresponding to the position of the inner heat conducting rod is formed in the side wall of the heat insulation plate, the inner heat conducting rod is movably connected with the inside of the hollow heat conducting core, and the heat insulation plate, the heat insulation rod and the heat insulation plug are all made of heat insulation materials.

Furthermore, the bottom end of the inner heat conducting rod is fixedly connected with a conduction bag which is movably and hermetically connected with the inner wall of the outer heat conducting rod, heat conducting oil is filled in the inner heat conducting ball, the heat conducting oil extends to the inside of the outer heat conducting rod, the conduction bag is positioned at the upper end part of the heat conducting oil, when the inner heat conducting rod is magnetically attracted into the hollow heat conducting core, the heat conducting oil in the inner heat conducting ball is guided into the upper end part of the outer heat conducting rod due to the negative pressure effect, and the bottom end part of the inner heat conducting rod is in contact with the heat conducting oil, so that.

Furthermore, the heat storage bag is filled with heat conducting gas, the heat storage bag is also made of heat insulating materials, and the heat storage bag is filled with the heat conducting gas, so that heat can be stored conveniently.

Furthermore, a plurality of water cooling rods are distributed at the top end parts of the plurality of water cooling pipes, and the top end parts of the plurality of water cooling rods are connected with the bottom end part of the mold core.

Furthermore, the water-cooling pipes are communicated with each other, and a valve is arranged between two adjacent water-cooling pipes connected with the liquid inlet pipe and the water outlet pipe.

A method of using a low loss injection mold comprising the steps of:

s1, firstly, a technician introduces a hot-melt injection molding material into a cavity of the mold core through a pouring port, the technician can install external heating equipment for heating the mold core in the hollow cavity, and the injection molding material is poured and molded in the cavity;

s2, before cooling and forming, the lower heat conductor penetrates through the heat insulation plate to be connected with the upper heat conductor by utilizing the magnetic attraction effect, heat is conducted to the lower heat conductor through the upper heat conductor, and the heat is collected in the heat storage bag;

s3, designing waste heat recovery time according to actual needs by technicians, disconnecting the upper heat conductor and the lower heat conductor before water cooling, separating the top end part of the lower heat conductor from the bottom end part of the lower heat conductor, playing a role of heat insulation by using a heat insulation plate and a heat insulation plug, storing heat in the heat insulation rod and the heat storage bag well, and simultaneously realizing preliminary cooling of the mold core;

s4, at the moment, the liquid inlet pipe is used for introducing cooling liquid into the plurality of water cooling pipes connected end to end, the cooling liquid is led out through the water outlet pipe after circulating for a circle, the water cooling operation is repeated for multiple times, the cooling effect of the mold core is further improved, the cooling forming of the product is realized, the lower heat conductor and the upper heat conductor are disconnected with each other, and the heat in the heat storage bag is not dissipated due to the water cooling of the mold core;

s5, when new injection molding is performed next time, the magnetic attraction device between the upper heat conductor and the lower heat conductor is started, heat stored in the heat storage bag is guided into the conduction seat, the conduction seat is utilized to transfer the heat into the die core, and a good preheating effect is achieved to a certain extent.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) in the scheme, the heat storage bags for collecting waste heat are arranged at the four corners of the bottom end of the mold core, the heat storage bags are connected with the mold core through the heat insulation rods, the upper heat conductor and the lower heat conductor which extend to the conduction seat and the heat storage bags respectively are arranged in the heat insulation rods, the lower heat conductor is connected with the upper heat conductor through the heat insulation plate under the action of magnetic attraction before water cooling forming, heat is conducted through the upper heat conductor and the lower heat conductor and stored in the heat storage bags, heat recovery is realized, preliminary cooling of the mold core is realized, the water cooling operation of a plurality of water cooling pipes is matched, the cooling effect of the mold core is further improved, the cooling forming of a product is realized, the lower heat conductor is disconnected with the upper heat conductor during the water cooling process, the heat in the heat storage bags is not dissipated due to the water cooling of the mold core, and the heat stored in the heat storage bags can be used for preheating during next pouring, energy conservation and low loss are realized.

(2) Go up the heat conductor including connecting in the cavity heat conduction core of heat insulating board upper end, the upper end of cavity heat conduction core extends to inside the conduction seat, the top portion of cavity heat conduction core inlays to establish and installs the electromagnetic sheet, the inside packing of conduction seat has the heat conduction fibrous layer, the inside on heat conduction fibrous layer is equipped with a plurality of graphite heat conduction particles, after the leading-in die cavity to the mold core of hot melt injection molding material, the conduction seat is used for the heat accumulation, before water-cooling shaping, the heat is through the conduction seat, the conduction is carried out to the heat conductor downwards to cavity heat conduction core, and collect the heat in heat storage bag.

(3) The lower heat conductor comprises an outer heat conducting rod connected to the bottom end of the heat insulation plate, the bottom end of the outer heat conducting rod penetrates through the heat storage bag and is connected to the inner heat conducting ball, the inner heat conducting rod is movably connected inside the outer heat conducting rod, the top end of the inner heat conducting rod is fixedly connected with a heat insulation plug, the top end of the heat insulation plug is provided with a magnetic suction sheet matched with the electromagnetic sheet, a heat conducting cavity corresponding to the position of the inner heat conducting rod is formed in the side wall of the heat insulation plate, the inner heat conducting rod is movably connected with the inside of the hollow heat conducting core, the heat insulation plate, the heat insulation rod and the heat insulation plug are made of heat insulation materials, the lower heat conductor and the upper heat conductor have the heat insulation effect of the heat insulation plate and the heat insulation plug before contacting, so that the upper heat conductor and the lower heat conductor can carry out heat insulation treatment, when waste heat is collected, the electromagnetic sheet on the, so that the hollow heat conducting core conducts heat downwards through the inner heat conducting rod.

(4) The bottom fixedly connected with of interior heat conduction stick and the sealed conduction bag that links up of outer heat conduction stick inner wall activity, the inside packing of interior heat conduction ball has the conduction oil, the conduction oil extends to outside inside the heat conduction stick, the conduction bag is located the upper end of conduction oil, after interior heat conduction stick is inhaled to cavity heat conduction in-core by magnetism, the conduction oil in interior heat conduction ball is because of the leading-in to outside heat conduction stick upper end department of negative pressure effect, interior heat conduction stick bottom portion contacts with the conduction oil, be favorable to heat-conduction, the inside packing of heat accumulation bag has heat-conducting gas, the heat accumulation bag adopts the heat-insulating material to make equally, pack heat-conducting gas in the heat accumulation bag.

(5) The top parts of the water-cooled tubes are provided with a plurality of water-cooled rods, the top parts of the water-cooled rods are connected with the bottom part of the mold core, the water-cooled tubes are arranged in a communicated manner pairwise, valves are arranged between two adjacent water-cooled tubes connected with the liquid inlet tube and the water outlet tube, the liquid inlet tube, the water-cooled tubes and the water outlet tube form a loop, cooling liquid is guided into the water-cooled tubes connected end to end by the liquid inlet tube, the cooling liquid is guided out through the water outlet tube after circulating for a circle, the water-cooled operation is repeated for a plurality of times, the cooling effect of the mold core is further improved, and the cooling molding of a product.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a cross-sectional view of the junction of the lower template and the core of the present invention;

FIG. 3 is a first perspective view of the joint of the mold core, a plurality of heat storage cells and water cooling tubes;

FIG. 4 is a second perspective view of the mold core, a plurality of heat storage cells and water cooling tubes;

FIG. 5 is a schematic side view of the mold core in combination with a plurality of heat storage cells and water cooling tubes according to the present invention;

FIG. 6 is a schematic view of the interior of the heat storage pack of the present invention at the junction with the insulating rod and the conductive base;

FIG. 7 is an internal view of the junction of the upper and lower thermal conductors of FIG. 6;

fig. 8 is an internal schematic view of the upper and lower heat conductors of fig. 7 after being magnetically connected.

The reference numbers in the figures illustrate:

1 lower template, 2 upper templates, 3 mold cores, 4 hollow cavities, 5 conduction seats, 6 heat insulation rods, 7 heat storage bags, 8 water cooling pipes, 9 liquid inlet pipes, 10 water cooling rods, 11 water outlet pipes, 12 inner heat conduction balls, 13 outer heat conduction rods, 14 hollow heat conduction cores, 15 inner heat conduction rods, 16 electromagnetic sheets, 17 magnetic suction sheets, 18 heat insulation plugs and 19 heat conduction oils.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-5, a low-loss injection mold comprises an upper mold plate 2 and a lower mold plate 1 which are arranged up and down, wherein the upper and lower corners of the lower mold plate 1 are connected with the four corners of the bottom end of the lower mold plate 1 through electric telescopic rods, a mold core 3 is arranged at the upper end of the lower mold plate 1, a mold cavity is arranged in the mold core 3, a pouring opening communicated with the mold cavity is arranged on the side wall of the upper mold plate 2, a hollow cavity 4 positioned at the bottom end part of the mold core 3 is arranged in the lower mold plate 1, the four corners of the bottom end of the mold core 3 are fixedly connected with a conduction seat 5, the outer ends of a plurality of conduction seats 5 are connected with a heat storage bag 7 through a heat insulation rod 6, the inner part of the heat insulation rod 6 is fixedly connected with a heat insulation plate, the upper and lower ends of the heat conductor are respectively connected with an upper heat conductor and a lower heat conductor, the upper end, the upper heat conductor and the lower heat conductor are arranged in a magnetic attraction manner.

Referring to fig. 5-8, specifically, the upper heat conductor includes a hollow heat conducting core 14 connected to the upper end of the heat insulation board, the upper end of the hollow heat conducting core 14 extends into the conduction base 5, an electromagnetic sheet 16 is embedded and installed at the top end portion of the hollow heat conducting core 14, a heat conducting fiber layer is filled in the conduction base 5, a plurality of graphite heat conducting particles are arranged in the heat conducting fiber layer, the conduction base 5 is used for gathering heat at the mold core 3, after a hot-melt molding material is introduced into a cavity of the mold core 3, before water-cooling molding, the lower heat conductor is magnetically connected with the upper heat conductor, the heat is conducted to the lower heat conductor through the conduction base 5 and the hollow heat conducting core 14, and is collected in the heat storage bag 7, the heat storage bag 7 is filled with heat conducting gas, the heat storage bag 7 is also made of a heat insulating material, the heat storage bag 7 is filled with heat conducting gas, which is beneficial for storing heat, the heat stored in the heat storage cells 7 is not easily conducted outward through the side walls thereof.

The lower heat conductor comprises an outer heat conducting rod 13 connected to the bottom end of the heat insulation plate, the bottom end of the outer heat conducting rod 13 penetrates through the heat storage bag 7 and is connected to the inner heat conducting ball 12, the inner heat conducting rod 15 is movably connected to the inner heat conducting rod 13, the top end of the inner heat conducting rod 15 is fixedly connected with a heat insulation plug 18, the top end of the heat insulation plug 18 is provided with a magnetic suction piece 17 matched with the electromagnetic piece 16, when waste heat is collected and stored, the electromagnetic piece 16 on the hollow heat conducting core 14 is started timely according to actual production requirements, the electromagnetic piece 16 can be connected with an external controller, automatic waste heat collection and cooling are realized by adopting timing control, the electromagnetic piece 16 plays a magnetic suction role on the magnetic suction piece 17 on the inner heat conducting rod 15, so that the inner heat conducting rod 15 extends into the hollow heat conducting core 14 through the heat insulation plate, a heat conducting cavity corresponding to the position of the inner heat conducting rod 15 is formed in the side wall of the heat insulation, the heat insulation plate, the heat insulation rod 6 and the heat insulation plug 18 are all made of heat insulation materials, the top end part of the inner heat conduction rod 15 penetrates through the heat conduction cavity, the contact connection between the inner heat conduction rod 15 and the hollow heat conduction core 14 is realized, and therefore the hollow heat conduction core 14 conducts heat downwards through the inner heat conduction rod 15;

the bottom fixedly connected with of interior heat conduction stick 15 and the sealed conduction bag that links up of outer heat conduction stick 13 inner wall activity, the inside packing of interior heat conduction ball 12 has conduction oil 19, conduction oil 19 extends to outside inside heat conduction stick 13, the conduction bag is located the upper end of conduction oil 19, after interior heat conduction stick 15 is inhaled to cavity heat conduction core 14 by magnetism, conduction oil 19 in interior heat conduction ball 12 adsorbs the leading-in to outer heat conduction stick 13 upper end department because of the negative pressure effect, 15 bottom of interior heat conduction stick contacts with conduction oil 19, be favorable to improving the thermoconductivity, it needs to explain here, conduction seat 5, outer heat conduction stick 13, cavity heat conduction core 14, interior heat conduction stick 15 all adopts the thermal conductivity material to make.

Referring to fig. 2-5, a plurality of conduction seats 5 are connected with water-cooled tubes 8 between two adjacent conduction seats, the water-cooled tubes 8 are connected end to end, a liquid inlet tube 9 and a water outlet tube 11 are arranged at the outer end of the lower template 1, the inner end of the liquid inlet tube 9 sequentially penetrates through the lower template 1 and the conduction seats 5 and is fixedly connected with one end of one water-cooled tube 8, the inner end of the water outlet tube 11 penetrates through the lower template 1 and is connected with the adjacent water-cooled tube 8, the liquid inlet tube 9 and the water outlet tube 11 are horizontally arranged, a plurality of water-cooled rods 10 are distributed at the top end parts of the water-cooled tubes 8, the top end parts of the water-cooled rods 10 are connected with the bottom end part of the mold core 3, the water-cooled rods 10 are made of heat conduction materials and are used for transmitting low temperature to the bottom end part of the mold core 3, the water-cooled tubes 8 are communicated with each, A plurality of water-cooled tubes 8 and outlet pipe 11 form a return circuit, utilize feed liquor pipe 9 to leading-in coolant liquid in a plurality of water-cooled tubes 8 of end to end connection, coolant liquid circulation a week back is outwards derived through outlet pipe 11, so reciprocal many times water-cooling operation, further improves the cooling effect of mold core 3, realizes the cooling shaping of product.

A method of using a low loss injection mold comprising the steps of:

s1, firstly, a technician introduces hot-melt injection molding materials into a cavity of the mold core 3 through a pouring port, the technician can install external heating equipment for heating the mold core 3 in the hollow cavity 4, and the injection molding materials are poured and molded in the cavity;

s2, before cooling and forming, the lower heat conductor penetrates through the heat insulation plate to be connected with the upper heat conductor by utilizing the magnetic attraction effect, heat is conducted to the lower heat conductor through the upper heat conductor, and the heat is collected in the heat storage bag 7;

s3, designing waste heat recovery time according to actual needs by technicians, disconnecting the upper heat conductor and the lower heat conductor before water cooling, separating the top end part of the lower heat conductor from the bottom end part of the lower heat conductor, playing a role of heat insulation by using a heat insulation plate and a heat insulation plug 18, storing heat in the heat insulation rod 6 and the heat storage bag 7 well, and simultaneously realizing preliminary cooling of the mold core 3;

s4, at the moment, the liquid inlet pipe 9 is used for introducing cooling liquid into the water cooling pipes 8 connected end to end, the cooling liquid is circulated for a circle and then is led out through the water outlet pipe 11, the water cooling operation is repeated for multiple times, the cooling effect of the mold core 3 is further improved, the cooling forming of the product is realized, the lower heat conductor and the upper heat conductor are disconnected, and the heat loss in the heat storage bag 7 caused by the water cooling of the mold core 3 is avoided;

s5, when new injection molding is performed next time, the magnetic attraction device between the upper heat conductor and the lower heat conductor is started, the heat stored in the heat storage bag 7 is led into the conduction seat 5, the conduction seat 5 is utilized to transfer the heat into the mold core 3, and a good preheating effect is achieved to a certain extent.

According to the invention, the four corners at the bottom end of the mold core 3 are respectively provided with the heat storage bags 7 for collecting waste heat, the heat storage bags 7 are connected with the conduction seats 5 on the side wall of the mold core 3 through the heat insulation rods 6, the upper heat conductors and the lower heat conductors which respectively extend into the conduction seats 5 and the heat storage bags 7 are installed in the heat insulation rods 6, before water cooling forming, the lower heat conductors penetrate through the heat insulation plates to be connected with the upper heat conductors by utilizing the magnetic attraction effect, heat is conducted through the upper heat conductors and the lower heat conductors and stored in the heat storage bags 7, heat recovery is realized, preliminary cooling of the mold core 3 is realized, heat at the mold core 3 is spread to the periphery, and then the water cooling operation of a plurality of water cooling pipes 8 is matched, the cooling effect of the mold core 3 is further improved, the cooling forming of products in the mold core 3 is realized, in addition, the water cooling process is carried out, the lower heat conductors are disconnected with the upper heat conductors, heat storage bags 7 can not be dissipated due to the, the heat stored in the heat storage bag 7 can be used for preheating in next pouring, so that the effects of energy conservation and low loss are realized.

The components used in the present invention are all standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experiments.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.

Claims

1. The utility model provides a low-loss injection mold, includes cope match-plate pattern (2) and lower bolster (1) that set up from top to bottom, the equal section of thick bamboo electric telescopic handle in upper and lower four corners of lower bolster (1) is connected with the bottom four corners of lower bolster (1), the upper end of lower bolster (1) is equipped with mold core (3), be equipped with the die cavity in mold core (3), set up the mouth of pouring that is linked together with the die cavity on the lateral wall of cope match-plate pattern (2), its characterized in that: the heat insulation device is characterized in that a hollow cavity (4) located at the bottom end part of the mold core (3) is formed in the lower template (1), four corners of the bottom end of the mold core (3) are fixedly connected with conduction seats (5), the outer ends of the conduction seats (5) are connected with heat storage bags (7) through heat insulation rods (6), heat insulation plates are fixedly connected with the inner parts of the heat insulation rods (6), the upper ends and the lower ends of the heat insulation plates are respectively connected with upper heat conductors and lower heat conductors, the upper ends of the upper heat conductors extend into the conduction seats (5), the lower ends of the lower heat conductors extend into the heat storage bags (7) and are fixedly connected with inner heat conduction balls (12), the upper heat conductors and the lower heat conductors are arranged in a magnetic attraction mode, a plurality of conduction seats (5) are connected between every two adjacent conduction seats, a plurality of water cooling pipes (8) are connected end to end, a liquid inlet pipe (9) and a water outlet pipe (11) are arranged at the outer end of the lower template, the inner end of the liquid inlet pipe (9) penetrates through the lower template (1) and the conduction seat (5) in sequence and is fixedly connected with one end of one water-cooled pipe (8), the inner end of the water outlet pipe (11) penetrates through the lower template (1) and is connected with the adjacent water-cooled pipe (8), and the liquid inlet pipe (9) and the water outlet pipe (11) are horizontally arranged.

2. A low loss injection mold according to claim 1, characterized in that: go up the heat conductor including connecting in cavity heat conduction core (14) of heat insulating board upper end, the upper end of cavity heat conduction core (14) extends to inside conduction seat (5), the top portion of cavity heat conduction core (14) is inlayed and is established and install electromagnetic sheet (16).

3. A low loss injection mold according to claim 2, characterized in that: the heat conduction fiber layer is filled in the conduction seat (5), and a plurality of graphite heat conduction particles are arranged in the heat conduction fiber layer.

4. A low loss injection mold according to claim 3, characterized in that: the lower heat conductor comprises an outer heat conducting rod (13) connected to the bottom end of the heat insulation plate, the bottom end of the outer heat conducting rod (13) penetrates through the heat storage bag (7) and is connected to the inner heat conducting ball (12), the inner heat conducting rod (15) is movably connected to the inner portion of the outer heat conducting rod (13), the top end of the inner heat conducting rod (15) is fixedly connected with a heat insulation plug (18), and the top end of the heat insulation plug (18) is provided with a magnetic suction piece (17) matched with the electromagnetic piece (16).

5. The low loss injection mold of claim 4, wherein: the heat insulation plate is characterized in that a heat conduction cavity corresponding to the position of the inner heat conduction rod (15) is formed in the side wall of the heat insulation plate, the inner heat conduction rod (15) is movably connected with the inside of the hollow heat conduction core (14), and the heat insulation plate, the heat insulation rod (6) and the heat insulation plug (18) are all made of heat insulation materials.

6. The low loss injection mold of claim 5, wherein: the bottom end of the inner heat conducting rod (15) is fixedly connected with a conducting bag which is movably and hermetically connected with the inner wall of the outer heat conducting rod (13), heat conducting oil (19) is filled in the inner heat conducting ball (12), the heat conducting oil (19) extends to the inner part of the outer heat conducting rod (13), and the conducting bag is located at the upper end part of the heat conducting oil (19).

7. The low loss injection mold of claim 6, wherein: the heat storage bag (7) is filled with heat conducting gas, the heat storage bag (7) is also made of heat insulating materials, and the heat storage bag (7) is filled with the heat conducting gas, so that heat can be stored conveniently.

8. The low loss injection mold of claim 7, wherein: the top end parts of the water cooling pipes (8) are provided with a plurality of water cooling rods (10), and the top end parts of the water cooling rods (10) are connected with the bottom end part of the mold core (3).

9. The low loss injection mold of claim 8, wherein: the water cooling pipes (8) are communicated with each other, and a valve is arranged between every two adjacent water cooling pipes (8) connected with the liquid inlet pipe (9) and the water outlet pipe (11).

10. Use of a low loss injection mold according to any of claims 1-9, characterized in that: the method comprises the following steps:

s1, firstly, a technician introduces hot-melt injection molding materials into a cavity of the mold core (3) through a pouring port, the technician can install external heating equipment for heating the mold core (3) in the hollow cavity (4), and the injection molding materials are poured and molded in the cavity;

s2, before cooling and forming, the lower heat conductor penetrates through the heat insulation plate to be connected with the upper heat conductor by utilizing the magnetic attraction effect, heat is conducted to the lower heat conductor through the upper heat conductor, and the heat is collected in the heat storage bag (7);

s3, designing waste heat recovery time according to actual needs by technicians, disconnecting the upper heat conductor and the lower heat conductor before water cooling, separating the top end part of the lower heat conductor from the bottom end part of the lower heat conductor, playing a role in heat insulation by using a heat insulation plate and a heat insulation plug (18), storing heat well in a heat insulation rod (6) and a heat storage bag (7), and simultaneously realizing primary cooling of the mold core (3);

s4, at the moment, cooling liquid is introduced into the water cooling pipes (8) connected end to end by using the liquid inlet pipe (9), the cooling liquid is led out through the water outlet pipe (11) after circulating for a circle, and the water cooling operation is repeated for multiple times in such a way, so that the cooling effect of the mold core (3) is further improved, the cooling forming of a product is realized, the lower heat conductor and the upper heat conductor are disconnected, and the heat loss in the heat storage bag (7) caused by the water cooling of the mold core (3) is avoided;

s5, when new injection molding is performed next time, the magnetic attraction device is started between the upper heat conductor and the lower heat conductor, heat stored in the heat storage bag (7) is conducted into the conduction seat (5), the conduction seat (5) is utilized to transfer the heat into the mold core (3), and a good preheating effect is achieved to a certain extent.