CN216329689U

CN216329689U - Injection mold is used in mould production convenient to drawing of patterns and cooling

Info

Publication number: CN216329689U
Application number: CN202121618600.6U
Authority: CN
Inventors: 黄国开
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-04-19
Anticipated expiration: 2031-07-16

Abstract

The utility model discloses an injection mold for mold production, which is convenient for demolding and cooling; belongs to the technical field of injection molds; the device is characterized by comprising a box body with an opening at the top, wherein a cylinder support is arranged at the top of the box body, a first cylinder is arranged on the cylinder support, an upper die mounting plate is arranged at the free end of a piston rod at the bottom of the first cylinder, an upper die is arranged at the bottom of the upper die mounting plate, and a first guide rod is vertically arranged between the first cylinder and the upper die mounting plate; a positioning groove matched with the upper die mounting plate is arranged on the inner side of the top end of the box body, a lower die cavity matched with the upper die is arranged in the box body at the bottom of the abdicating groove, a forming cavity is formed by matching the upper die and the inner wall of the lower die cavity, and a cooling mechanism is arranged in the box body at the periphery of the lower die cavity; a demoulding ejection mechanism is arranged in the box body at the bottom of the lower die cavity; the utility model aims to provide the injection mold for mold production, which can effectively improve the demolding working efficiency and ensure the product quality and is convenient to demold and cool.

Description

Injection mold is used in mould production convenient to drawing of patterns and cooling

Technical Field

The present invention relates to an injection mold for mold production, and more particularly, to an injection mold for mold production which is convenient for demolding and cooling.

Background

The injection mold is a tool for producing plastic products, and is widely applied to the automatic plastic molding process due to stable production performance, high product precision and easy automatic production. The thermal balance of the injection mold controls the thermal conduction of the injection molding machine and the mold is critical to the production of injection molded parts.

The existing injection mold is not convenient for stripping materials during demolding, so that the working efficiency of people is reduced, the mold is easy to generate a large amount of heat during injection molding, the service life of the mold is greatly reduced because the common mold does not have a cooling function, and the quality of a product is reduced because the mold is overheated.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the injection mold for mold production, which is reasonable in structure, simple in operation, capable of effectively improving the demolding working efficiency and ensuring the product quality and convenient for demolding and cooling.

The technical scheme of the utility model is realized as follows: an injection mold for mold production convenient for demolding and cooling comprises a box body with an opening in the top, wherein a support is arranged at the bottom of the box body, a cylinder support is arranged at the top of the box body, a first cylinder is vertically arranged on the cylinder support, an upper mold mounting plate is arranged at the free end of a piston rod at the bottom of the first cylinder, an upper mold is arranged at the bottom of the upper mold mounting plate, and a first guide rod is vertically arranged between the first cylinder and the upper mold mounting plate; a positioning groove matched with the upper die mounting plate is arranged on the inner side of the top end of the box body, a lower die cavity matched with the upper die is arranged in the box body at the bottom of the abdicating groove, the upper die and the inner wall of the lower die cavity are matched to form a forming cavity, and a cooling mechanism for cooling the lower die cavity and a plastic product just formed in the lower die cavity is arranged in the box body at the periphery of the lower die cavity; and a demolding ejection mechanism used for separating the molded plastic product from the lower die cavity is arranged in the box body at the bottom of the lower die cavity.

In the injection mold for mold production convenient for demolding and cooling, the cooling mechanism comprises an annular cooling cavity which is arranged in the box body outside the lower mold cavity and is matched with the lower mold cavity, and a water storage cavity which is matched with the annular cooling cavity is arranged in the box body outside the annular cooling cavity; the water storage cavity is internally provided with a liquid cooler, the bottom of the water storage cavity is provided with a water inlet pipe communicated with the annular cooling cavity, the top of the water storage cavity is provided with a water outlet pipe communicated with the annular cooling cavity, the water inlet pipe and the water outlet pipe are both provided with electromagnetic valves, and the water storage cavity is internally provided with a booster pump communicated with the water inlet end of the water inlet pipe.

In the injection mold for mold production convenient for demolding and cooling, the demolding ejection mechanism comprises a limiting ring arranged at the bottom of a lower mold cavity, a plurality of matched demolding top plates are horizontally arranged in the lower mold cavity at the bottom of the limiting ring, and matching grooves matched with the limiting ring are formed at the matching ends of the demolding top plates and the limiting ring; a demoulding ejection cavity is arranged in the box body at the bottom of each demoulding top plate, a lifting plate is horizontally arranged in the demoulding ejection cavity, and a plurality of second guide rods which are in sliding connection with the lifting plate are vertically arranged on two sides of the demoulding ejection cavity.

The two sides of the top of the lifting plate are symmetrically provided with mounting shaft seats, the mounting shaft seats are horizontally provided with matched demoulding crankshafts, a servo motor connected with the demoulding crankshafts is arranged on the lifting plate outside one of the mounting shaft seats, a first connecting rod is hinged to a connecting rod neck of the demoulding crankshaft through a hinge rod, a second connecting rod is hinged to a main shaft neck of the demoulding crankshaft between two adjacent first connecting rods through the hinge rod, the first connecting rod and the second connecting rod extend into the lower mould cavity and are respectively connected with the bottom of a demoulding top plate in a one-to-one correspondence manner, a lifting spring is arranged between the bottom of the lifting plate and the bottom of an ejection cavity of the demoulding, and the distance between a limiting ring and the bottom of the lower mould cavity is larger than the thickness of the demoulding top plate and smaller than the stroke of the first connecting rod.

A positioning component for positioning the horizontal position of the demoulding crankshaft connecting rod neck is arranged in the demoulding ejection cavity; and a discharging jacking assembly for discharging the plastic products is arranged between the second connecting rod and the corresponding demoulding top plate.

In the initial state, when the die is subjected to injection molding, the main journal and the connecting rod journal of the demolding crankshaft are positioned on the same horizontal plane, and at the moment, the top of each demolding top plate is parallel to the top of the limiting ring under the elastic force action of the lifting spring; during the drawing of patterns, servo motor drives the drawing of patterns bent axle and rotates, the drawing of patterns bent axle rotates the drawing of patterns roof that drives to be connected through first connecting rod with the connecting rod neck and reciprocates, when first connecting rod drives the drawing of patterns roof and moves down, drawing of patterns roof on the first connecting rod breaks away from with the plastics product bottom in the lower mould intracavity, when first connecting rod drives the drawing of patterns roof and shifts up, drawing of patterns roof top on the first connecting rod contacts with the spacing ring and carries on spacingly, drawing of patterns roof on the second connecting rod is down the motion under the reaction force and breaks away from with the plastics product bottom in the lower mould intracavity.

In foretell injection mold for mould production convenient to drawing of patterns and cooling, locating component is including setting up at the ejecting intracavity lateral wall of drawing of patterns and with the horizontal position sensor that drawing of patterns crankshaft connecting rod neck corresponds time, ejection intracavity top symmetry in the drawing of patterns is provided with respectively with two vertical positioning sensor that corresponding when two horizontal positions of drawing of patterns crankshaft connecting rod neck correspond time.

And the bottom of the lifting plate below the connecting end of the demoulding crankshaft connecting rod neck and the main journal is vertically provided with a corresponding second cylinder, and the free end of a piston rod of the second cylinder is provided with an auxiliary leveling supporting plate matched with the demoulding crankshaft connecting rod neck and the main journal.

During injection molding, the servo motor drives the demolding crankshaft to rotate, when the horizontal positioning sensor and the vertical positioning sensor simultaneously correspond to the demolding crankshaft connecting rod neck, the servo motor stops, the second cylinder pushes the auxiliary leveling supporting plate to ascend to be in contact with the bottom end of the demolding crankshaft connecting rod neck and the bottom end of the main journal, and the demolding crankshaft connecting rod neck rotates to the horizontal position.

In foretell injection mold for mould production convenient to drawing of patterns and cooling, ejection of compact jacking subassembly including set up at the drawing of patterns roof top that is connected with the second connecting rod and with drawing of patterns roof matched with ejection of compact roof, be provided with sealed turn-ups at ejection of compact roof top, be provided with at drawing of patterns roof top with ejection of compact roof and sealed turn-ups matched with seal groove, along the vertical drawing of patterns pneumatic cylinder that is connected bottom the ejection of compact roof that is provided with in the second connecting rod.

When the demoulding crankshaft drives the demoulding top plate on the first connecting rod and the second connecting rod to be separated from the bottom of the plastic product, the demoulding hydraulic cylinder drives the discharging top plate to ascend to lift the plastic product in the lower die cavity for discharging.

After the structure is adopted, the first air cylinder, the first guide rod and the upper die mounting plate are matched with each other, so that the upper die can be effectively positioned during injection molding, and the upper die is conveniently separated from a plastic product during demolding. Can carry out rapid cooling to the plastic product behind die cavity and the lower die cavity injection moulding through cooling body, the coolant liquid in the annular cooling intracavity can carry out cyclic utilization moreover, saves the resource, improves product quality. The demoulding ejection mechanism can conveniently demould plastic products after injection moulding, reduces the operation difficulty of workers in demoulding, improves the efficiency of producing workpieces by moulds, can effectively prevent the damage of the moulded plastic products caused by direct demoulding of a demoulding device in the demoulding process, and ensures the product quality.

Drawings

The utility model will be further described in detail with reference to examples of embodiments shown in the drawings to which, however, the utility model is not restricted.

FIG. 1 is a schematic view of the structure of the present invention during injection molding;

FIG. 2 is a schematic view of the structure of the present invention at the time of demolding;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic structural view of the discharging jacking assembly of the present invention;

fig. 5 is a sectional view at B-B in fig. 4.

In the figure: 1. a box body; 1a, a support; 1b, positioning grooves; 2. a cylinder support; 2a, a first cylinder; 2b, mounting an upper die mounting plate; 2c, a first guide rod; 3. an upper die; 4. a lower die cavity; 5. a molding cavity; 6. a cooling mechanism; 6a, an annular cooling cavity; 6b, a water storage cavity; 6c, a liquid cooler; 6d, a water inlet pipe; 6e, a water outlet pipe; 6f, an electromagnetic valve; 6g of booster pump; 7. a demoulding and ejecting mechanism; 7a, a limiting ring; 7b, demoulding the top plate; 7c, a matching groove; 7d, demolding and ejecting out the cavity; 7e, a lifting plate; 7f, a second guide rod; 7g, mounting a shaft seat; 7h, demolding the crankshaft; 7i, a servo motor; 7j, a hinge rod; 7k, a first connecting rod; 7l, a second connecting rod; 7m, a lifting spring; 8. a positioning assembly; 8a, a horizontal positioning sensor; 8b, a vertical positioning sensor; 8c, a second cylinder; 8d, auxiliary leveling supporting plates; 9. a discharging jacking assembly; 9a, a discharge top plate; 9b, sealing and flanging; 9c, a sealing groove; 9d, demolding hydraulic cylinders; 10. an injection molding port; 11. a main journal; 12. a connecting rod neck.

Detailed Description

Referring to fig. 1 to 5, the injection mold for mold production convenient to demold and cool comprises a box body 1 with an opening at the top, wherein a support 1a is arranged at the bottom of the box body 1, a cylinder support 2 is arranged at the top of the box body 1, a first cylinder 2a is vertically arranged on the cylinder support 2, an upper mold mounting plate 2b is arranged at the free end of a piston rod at the bottom of the first cylinder 2a, an upper mold 3 is arranged at the bottom of the upper mold mounting plate 2b, and a first guide rod 2c is vertically arranged between the first cylinder 2a and the upper mold mounting plate 2 b; can effectively fix a position mould 3 when injection moulding through first cylinder 2a, first guide bar 2c and last mould mounting panel 2b mutually supporting, will go up mould 3 and plastic products and break away from when conveniently drawing of patterns simultaneously. The inner side of the top end of the box body 1 is provided with a positioning groove 1b matched with the upper die mounting plate 2b, a lower die cavity 4 matched with the upper die 3 is arranged in the box body 1 at the bottom of the positioning groove, the upper die 3 and the inner wall of the lower die cavity 4 are matched to form a forming cavity 5, and a cooling mechanism 6 used for cooling the lower die cavity 4 and a plastic product just formed in the lower die cavity is arranged in the box body 1 at the periphery of the lower die cavity 4.

Preferably, the cooling mechanism 6 comprises an annular cooling cavity 6a which is arranged in the box body 1 outside the lower die cavity 4 and is matched with the lower die cavity 4, and a water storage cavity 6b which is matched with the annular cooling cavity 6a is arranged in the box body 1 outside the annular cooling cavity 6 a; a liquid cooler 6c is arranged in the water storage cavity 6b, a water inlet pipe 6d communicated with the annular cooling cavity 6a is arranged at the bottom in the water storage cavity 6b, a water outlet pipe 6e communicated with the annular cooling cavity 6a is arranged at the top in the water storage cavity 6b, electromagnetic valves 6f are arranged on the water inlet pipe 6d and the water outlet pipe 6e, and a booster pump 6g communicated with the water inlet end of the water inlet pipe 6d is arranged in the water storage cavity 6 b.

Carry the annular cooling chamber 6a through inlet tube 6d with the coolant liquid in the water storage chamber 6b through booster pump 6g and carry in the annular cooling chamber 6a to lower mould chamber 4 and lower mould chamber 4 in the plastics product after the injection moulding carry out rapid cooling, simultaneously, rapid cooling helps the product drawing of patterns. The cooling liquid after heat exchange in the annular cooling cavity 6a flows back into the water storage cavity 6b from the water outlet pipe 6e, and is recycled after being cooled by the liquid cooler 6c, so that resources are saved, and the quality of injection molding products is improved.

A demoulding and ejecting mechanism 7 used for separating the formed plastic product from the lower die cavity 4 is arranged in the box body 1 at the bottom of the lower die cavity 4; preferably, the demolding ejection mechanism 7 comprises a limiting ring 7a arranged at the bottom of the lower mold cavity 4, a plurality of demolding top plates 7b matched with each other are horizontally arranged in the lower mold cavity 4 at the bottom of the limiting ring 7a, and matching grooves 7c matched with the limiting ring 7a are formed in matching ends of the demolding top plates 7b and the limiting ring 7 a; a demolding ejection cavity 7d is arranged in the box body 1 at the bottom of each demolding top plate 7b, a lifting plate 7e is horizontally arranged in the demolding ejection cavity 7d, and a plurality of second guide rods 7f which are in sliding connection with the lifting plate 7e are vertically arranged on two sides of the demolding ejection cavity 7 d. Can inject the high lift of each drawing of patterns roof 7b through mutually supporting between cooperation groove 7c and spacing ring 7a, guarantee that each drawing of patterns roof 7b top is in the coplanar during injection moulding, guarantee injection moulding's product quality.

Mounting shaft seats 7g are symmetrically arranged on two sides of the top of the lifting plate 7e, a demoulding crankshaft 7h matched with the mounting shaft seats 7g is horizontally arranged on the mounting shaft seats 7g, a servo motor 7i connected with a demoulding crankshaft 7h is arranged on a lifting plate 7e at the outer side of one of the mounting shaft seats 7g, first connecting rods 7k are hinged on the connecting rod necks 12 of the demoulding crankshafts 7h through hinge rods 7j, second connecting rods 7l are hinged on the main shaft necks 11 of the demoulding crankshafts 7h between two adjacent first connecting rods 7k through hinge rods 7j, the first connecting rods 7k and the second connecting rods 7l extend into the lower die cavity 4 and are respectively connected with the bottoms of the demoulding top plates 7b in a one-to-one correspondence manner, a lifting spring 7m is arranged between the bottom of the lifting plate 7e and the bottom of the demoulding ejection cavity 7d, and the distance between the limiting ring 7a and the bottom of the lower mould cavity 4 is larger than the thickness of the demoulding top plate 7b and smaller than the stroke of the first connecting rod 7 k.

In the initial state, when the die is subjected to injection molding, the main journal 11 and the connecting rod journal 12 of the demolding crankshaft 7h are positioned on the same horizontal plane, and at the moment, the top of each demolding top plate 7b is parallel to the top of the limiting ring 7a under the action of the elastic force of the lifting spring 7 m; during the drawing of patterns, servo motor 7i drives drawing of patterns bent axle 7h and rotates, drawing of patterns bent axle 7h rotates and drives drawing of patterns roof 7b of being connected through first connecting rod 7k with connecting rod neck 12 and reciprocate, when first connecting rod 7k drives drawing of patterns roof 7b and moves down, drawing of patterns roof 7b on the first connecting rod 7k breaks away from with the plastics product bottom in the lower die cavity 4, when first connecting rod 7k drives drawing of patterns roof 7b and shifts up, drawing of patterns roof 7b top on the first connecting rod 7k contacts with spacing ring 7a and carries out spacingly, drawing of patterns roof 7b on the second connecting rod 7l moves down under the reaction force and breaks away from with the plastics product bottom in the lower die cavity 4.

Through mutually supporting between drawing of patterns bent axle 7h, first connecting rod 7k and the second connecting rod 7l, can drive drawing of patterns roof 7b in batches and break away from with the plastics product bottom in the lower mould cavity 4, effectively prevent drawing of patterns in-process shedder direct drawing of patterns from causing the damage to the shaping plastics product, guarantee product quality.

A positioning component 8 for positioning the horizontal position of the connecting rod neck 12 of the demoulding crankshaft 7h is arranged in the demoulding ejection cavity 7 d; preferably, the positioning assembly 8 comprises a horizontal positioning sensor 8a which is arranged on the inner side wall of the demolding ejection cavity 7d and corresponds to the horizontal position of the connecting rod neck 12 of the demolding crankshaft 7h, and two vertical positioning sensors 8b which correspond to the two horizontal positions of the connecting rod neck 12 of the demolding crankshaft 7h are symmetrically arranged at the top in the demolding ejection cavity 7 d. And a corresponding second cylinder 8c is vertically arranged at the bottom of the lifting plate 7e below the connecting end of the demoulding crankshaft 7h connecting rod neck 12 and the main journal 11, and an auxiliary leveling supporting plate 8d matched with the connecting rod neck 12 and the main journal 11 of the demoulding crankshaft 7h is arranged at the free end of a piston rod of the second cylinder 8 c.

Can carry out accurate location to the rotatory horizontal position of drawing of patterns bent axle 7h connecting rod neck 12 through horizontal positioning sensor 8a and two vertical positioning sensor 8b mutually supporting, simultaneously, drive supplementary levelling layer board 8d jacking through second cylinder 8c and contact with 11 bottoms of main shaft neck 12 and drawing of patterns bent axle 7h connecting rod neck 12, further guarantee the horizontal position of connecting rod neck, the drawing of patterns roof 7b that prevents among the injection moulding process that first connecting rod 7k connects takes place the quality that the displacement influences the injection moulding product.

During injection molding, the servo motor 7i drives the demoulding crankshaft 7h to rotate, when the horizontal positioning sensor 8a and the vertical positioning sensor 8b simultaneously correspond to the connecting rod neck 12 of the demoulding crankshaft 7h, the servo motor 7i stops, the second cylinder 8c pushes the auxiliary leveling supporting plate 8d to ascend to be in contact with the connecting rod neck 12 of the demoulding crankshaft 7h and the bottom end of the main shaft neck 11, and the connecting rod neck 12 of the demoulding crankshaft 7h rotates to the horizontal position.

A discharging jacking assembly 9 for discharging plastic products is arranged between the second connecting rod 7l and the corresponding demoulding top plate 7 b; preferably, ejection of compact jacking subassembly 9 is including setting up at the drawing of patterns roof 7b top that is connected with second connecting rod 7l and with drawing of patterns roof 7b matched with ejection of compact roof 9a, be provided with sealed turn-ups 9b at ejection of compact roof 9a top, be provided with at drawing of patterns roof 7b top with ejection of compact roof 9a and sealed turn-ups 9b matched with seal groove 9c, along vertical drawing of patterns pneumatic cylinder 9d that is connected with ejection of compact roof 9a bottom be provided with in second connecting rod 7 l.

When the demoulding crankshaft 7h drives the demoulding top plate 7b on the first connecting rod 7k and the second connecting rod 7l to be separated from the bottom of the plastic product, the demoulding hydraulic cylinder 9d drives the discharging top plate 9a to ascend to lift the plastic product in the lower die cavity 4 for discharging.

In the present embodiment, the main journal 11 is a section of the demoulding crankshaft 7h coaxial with the rotating shaft of the servo motor 7i, and the connecting journal 12 is a section of the demoulding crankshaft 7h parallel to the rotating shaft of the servo motor 7i and connected with the main journal 11 through a crank.

The working principle of the utility model is as follows: in an initial state, the main journal 11 and the connecting journal 12 of the demoulding crankshaft 7h are positioned on the same horizontal plane, and at the moment, the top of each demoulding top plate 7b is parallel to the top of the limiting ring 7a under the action of the elastic force of the lifting spring 7 m; when carrying out injection moulding, start first cylinder 2a, first cylinder 2a drives and goes up mould mounting panel 2b and last mould 3 and descend to mould mounting panel 2b and constant head tank 1b and cooperate, goes up the cooperation between mould 3 and the 4 inner walls of lower mould chamber and forms into moulding cavity 5, carries out injection moulding in to moulding cavity 5 through mouth 10 that moulds plastics.

When demoulding, the first cylinder 2a is started, the first cylinder 2a drives the upper die mounting plate 2b and the upper die 3 to ascend and reset, the upper die 3 is separated from the top of the formed plastic product, then the servo motor 7i is started, the servo motor 7i drives the demoulding crankshaft 7h to rotate, the demoulding crankshaft 7h drives the demoulding top plate 7b connected with the connecting rod neck 12 through the first connecting rod 7k to move up and down, when the first connecting rod 7k drives the demoulding top plate 7b to move downwards, the demoulding top plate 7b on the first connecting rod 7k is separated from the bottom of the plastic product in the lower mould cavity 4, when the first connecting rod 7k drives the demoulding top plate 7b to move upwards, the top of the demoulding top plate 7b on the first connecting rod 7k is contacted with the limiting ring 7a for limiting, and the demoulding top plate 7b on the second connecting rod 7l moves downwards under the reaction force to be separated from the bottom of the plastic product in the lower die cavity 4; after the demoulding crankshaft 7h drives the demoulding top plate 7b on the first connecting rod 7k and the second connecting rod 7l to be separated from the bottom of the plastic product, the servo motor 7i is closed, each demoulding top plate 7b is restored to the initial state, the demoulding hydraulic cylinder 9d is started, and the demoulding hydraulic cylinder 9d drives the discharging top plate 9a to ascend to lift the plastic product in the lower die cavity 4 to the opening of the box body 1 for discharging. During the ejection of compact, can take out by manual work or adopt auxiliary assembly among the prior art to take out, for example robot etc. this is not the technical point that this practicality will protect, no longer gives details here.

The above-mentioned embodiments are only for convenience of description, and are not intended to limit the present invention in any way, and those skilled in the art will understand that the technical features of the present invention can be modified or changed by other equivalent embodiments without departing from the scope of the present invention.

Claims

1. An injection mold for mold production convenient for demolding and cooling comprises a box body (1) with an opening at the top, wherein a support (1 a) is arranged at the bottom of the box body (1), and is characterized in that a cylinder support (2) is arranged at the top of the box body (1), a first cylinder (2 a) is vertically arranged on the cylinder support (2), an upper mold mounting plate (2 b) is arranged at the free end of a piston rod at the bottom of the first cylinder (2 a), an upper mold (3) is arranged at the bottom of the upper mold mounting plate (2 b), and a first guide rod (2 c) is vertically arranged between the first cylinder (2 a) and the upper mold mounting plate (2 b);

a positioning groove (1 b) matched with the upper die mounting plate (2 b) is arranged on the inner side of the top end of the box body (1), a lower die cavity (4) matched with the upper die (3) is arranged in the box body (1) at the bottom of the positioning groove (1 b), a forming cavity (5) is formed between the upper die (3) and the inner wall of the lower die cavity (4) in a matched mode, and a cooling mechanism (6) used for cooling the lower die cavity (4) and a plastic product which is just formed in the lower die cavity is arranged in the box body (1) at the periphery of the lower die cavity (4); a demoulding and ejecting mechanism (7) used for separating the molded plastic product from the lower die cavity (4) is arranged in the box body (1) at the bottom of the lower die cavity (4).

2. An injection mold for mold production convenient for demolding and cooling as claimed in claim 1, characterized in that the cooling mechanism (6) comprises an annular cooling cavity (6 a) which is arranged in the case body (1) outside the lower mold cavity (4) and is matched with the lower mold cavity (4), and a water storage cavity (6 b) which is matched with the annular cooling cavity (6 a) is arranged in the case body (1) outside the annular cooling cavity (6 a); the water storage device is characterized in that a liquid cooler (6 c) is arranged in the water storage cavity (6 b), a water inlet pipe (6 d) communicated with the annular cooling cavity (6 a) is arranged at the bottom in the water storage cavity (6 b), a water outlet pipe (6 e) communicated with the annular cooling cavity (6 a) is arranged at the top in the water storage cavity (6 b), electromagnetic valves (6 f) are arranged on the water inlet pipe (6 d) and the water outlet pipe (6 e), and a booster pump (6 g) communicated with the water inlet end of the water inlet pipe (6 d) is arranged in the water storage cavity (6 b).

3. The injection mold for producing the mold convenient for demolding and cooling as claimed in claim 1, wherein the demolding ejection mechanism (7) comprises a limiting ring (7 a) arranged at the bottom of the lower mold cavity (4), a plurality of demolding top plates (7 b) matched with each other are horizontally arranged in the lower mold cavity (4) at the bottom of the limiting ring (7 a), and matching grooves (7 c) matched with the limiting ring (7 a) are arranged at the matching ends of the demolding top plates (7 b) and the limiting ring (7 a); a demolding ejection cavity (7 d) is arranged in the box body (1) at the bottom of each demolding top plate (7 b), a lifting plate (7 e) is horizontally arranged in the demolding ejection cavity (7 d), and a plurality of second guide rods (7 f) in sliding connection with the lifting plate (7 e) are vertically arranged on two sides of the demolding ejection cavity (7 d);

mounting shaft seats (7 g) are symmetrically arranged on two sides of the top of the lifting plate (7 e), matched demoulding crankshafts (7 h) are horizontally arranged on the mounting shaft seats (7 g), a servo motor (7 i) connected with the demoulding crankshafts (7 h) is arranged on the lifting plate (7 e) on the outer side of one of the mounting shaft seats (7 g), first connecting rods (7 k) are hinged on connecting rod necks of the demoulding crankshafts (7 h) through hinge rods (7 j), second connecting rods (7 l) are hinged on main shaft necks of the demoulding crankshafts (7 h) between two adjacent first connecting rods (7 k) through hinge rods (7 j), the first connecting rods (7 k) and the second connecting rods (7 l) extend into the lower die cavity (4) and are respectively connected with the bottoms of demoulding top plates (7 b) in a one-to-one correspondence manner, lifting springs (7 m) are arranged between the bottoms of the lifting plates (7 e) and the bottoms of demoulding ejection cavities (7 d), the distance between the limiting ring (7 a) and the bottom of the lower die cavity (4) is larger than the thickness of the demoulding top plate (7 b) and smaller than the stroke of the first connecting rod (7 k);

a positioning component (8) for positioning the horizontal position of the connecting rod neck of the demoulding crankshaft (7 h) is arranged in the demoulding ejection cavity (7 d); a discharging jacking component (9) for discharging plastic products is arranged between the second connecting rod (7 l) and the corresponding demoulding top plate (7 b).

4. The injection mold convenient for demolding and cooling for mold production as claimed in claim 3, wherein the positioning assembly (8) comprises a horizontal positioning sensor (8 a) arranged on the inner side wall of the demolding ejection cavity (7 d) and corresponding to the horizontal position of the connecting rod neck of the demolding crankshaft (7 h), and two vertical positioning sensors (8 b) corresponding to the two horizontal positions of the connecting rod neck of the demolding crankshaft (7 h) are symmetrically arranged at the top in the demolding ejection cavity (7 d);

and a second cylinder (8 c) corresponding to the bottom of the lifting plate (7 e) below the connecting end of the connecting rod neck and the main journal of the demoulding crankshaft (7 h) is vertically arranged, and an auxiliary leveling supporting plate (8 d) matched with the connecting rod neck and the main journal of the demoulding crankshaft (7 h) is arranged at the free end of the piston rod of the second cylinder (8 c).

5. The injection mold convenient for demolding and cooling is characterized in that the discharging jacking assembly (9) comprises a discharging top plate (9 a) which is arranged on the top of a demolding top plate (7 b) connected with a second connecting rod (7 l) and matched with the demolding top plate (7 b), a sealing flange (9 b) is arranged on the top of the discharging top plate (9 a), a sealing groove (9 c) matched with the discharging top plate (9 a) and the sealing flange (9 b) is arranged on the top of the demolding top plate (7 b), and a demolding hydraulic cylinder (9 d) connected with the bottom of the discharging top plate (9 a) is vertically arranged in the second connecting rod (7 l).