CN116141582A

CN116141582A - Injection mold convenient to accurate control velocity of flow

Info

Publication number: CN116141582A
Application number: CN202211089162.8A
Authority: CN
Inventors: 余皇坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-05-23

Abstract

The invention relates to the technical field of injection molds, and particularly discloses an injection mold convenient for accurately controlling flow rate, which comprises a cooling device, wherein one side of the cooling device is fixedly connected with a flow rate control device for carrying out heat preservation and conveying of plastic liquid, and the top of the flow rate control device is fixedly connected with a steam cooling device for cooling steam generated in the flow rate control device; according to the invention, the cooling device is arranged, so that the plastic liquid enters the cavity between the first molding block and the second molding block from the hole in the middle of the first molding block and then fully contacts with the inner wall of the cavity, the plastic liquid is solidified after being cooled to form a specific shape, the side surface of the second molding block is provided with the through hole, the water in the water tank shell is stored in the water tank shell, the water in the water tank shell circulates in the hole in the side surface of the second molding block, the heat in the second molding block is taken away, the temperature of the plastic liquid is reduced, and the effect of more rapid solidification is achieved.

Description

Injection mold convenient to accurate control velocity of flow

Technical Field

The invention relates to the technical field of injection molds, in particular to an injection mold convenient for accurately controlling flow rate.

Background

The injection mold is a device for injecting liquid plastic to cool and solidify the plastic into a specified shape, the general injection mold consists of a cooling circulation system, ejector pins and a shaping block, in the production process, granular plastic enters a transmission device after being heated and melted, an outlet of the transmission device is connected with a cavity of the shaping block, the liquid plastic in the transmission device is injected into the cavity between the shaping blocks through high pressure, at the moment, the cooling circulation system takes away the heat of the liquid plastic to enable the liquid plastic to be cooled and shaped more quickly, after shaping is finished, the two shaping blocks are separated automatically, and the ejector pins on the back of the shaping block push the solid plastic to drop into a collecting box, so that the production of one part is completed.

However, the injection molding process described above has drawbacks as follows:

firstly, in order to ensure the high efficiency of plasticity, a cooling circulation system of an injection molding machine is in an uninterrupted operation mode, but the cooling circulation system takes away heat through cold water circulation, additional water circulation devices are needed for supplying water and controlling circulation rate, and the existing injection molding pipelines have different lengths and different adaptation ranges, so that when the injection molding parts are in a large volume, the cooling effect of the cooling system on injection molding raw materials at different positions in the injection molding mold is difficult to be kept consistent, the fluidity of the injection molding materials is influenced, and the surface of molded plastic is not smooth;

secondly, when injection molding is produced, the transmission system is formed by a sealed pipeline and a threaded pipe which is internally matched with the transmission system, the threaded rod rotates to enable liquid plastic in gaps between the threads and the sealed pipe wall to be pushed into a cavity in the middle of the molding block, in the process, the amount of the liquid plastic in the cavity in the middle of the molding block is controlled by the rotating speed of the threaded rod, the threads and the liquid plastic in the middle of the sealed pipe wall are unevenly distributed, so that the amount of plastic liquid in a mold can not be accurately controlled during injection molding every time, the density of molded plastic products is different, and the quality of finished products can not be guaranteed to be uniform.

It is therefore desirable to provide an injection mold that facilitates accurate control of flow rate.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, the present invention provides an injection mold that facilitates accurate control of flow rate, so as to solve the problems in the prior art.

The invention provides the following technical scheme: the injection mold comprises a cooling device, wherein one side of the cooling device is fixedly connected with a flow rate control device for heat insulation and plastic liquid conveying, the top of the flow rate control device is fixedly connected with a steam cooling device for cooling steam generated in the flow rate control device, one end of the steam cooling device is fixedly connected with the cooling device, the cooling device is connected with the back of the flow rate control device through a water exchange device for exchanging water, the other side of the cooling device is movably connected with a fixer, and the outer side of the flow rate control device is fixedly connected with a protective box;

the cooling device comprises a cold water tank for storing water, the cold water tank comprises a water tank shell, one side fixedly connected with stationary blade of the water tank shell, the other side fixedly connected with of the water tank shell measures the manometer of the inside pressure of the water tank shell, one side fixedly connected with manometer of the manometer, one side fixedly connected with waterproof housing of the inside of the water tank shell, the inside fixedly connected with thermistor of waterproof housing, one side fixedly connected with temperature detector of stationary blade, the front fixedly connected with display panel of temperature detector, the inside fixedly connected with second shaping piece of the water tank shell, be provided with the through-hole that is used for rivers heat dissipation around the second shaping piece, the back fixedly connected with sealing frame of second shaping piece, the back fixedly connected with stopper of sealing frame, the inside swing joint of stopper, the front fixedly connected with thimble of push pedal, the front fixedly connected with push rod of second shaping piece, the front fixedly connected with first shaping piece of front fixedly connected with sealing device of the water tank shell, the front fixedly connected with sealing device of the stopper, the front fixedly connected with round bar of limiting rod, the inside fixedly connected with round supporting rod of limiting rod.

Further, the flow rate control device comprises a second plastic liquid pipe for conveying plastic liquid, a heat insulation material is fixedly connected to the outer side of the second plastic liquid pipe, a flow rate detector is fixedly connected to the outer surface of the second plastic liquid pipe close to the middle, a fixing rod is fixedly connected to the top of the flow rate detector, a leakage-proof ring is fixedly connected to the outer side of the fixing rod close to the top, a measuring instrument is fixedly connected to the top of the fixing rod, a display for displaying the real-time rate of the plastic liquid is fixedly connected to the front of the measuring instrument, a sealing interface for sealing the second plastic liquid pipe with a cooling device is fixedly connected to one end of the second plastic liquid pipe, a hot water cylinder is fixedly connected to the outer side of the heat insulation material, sealing rings are fixedly connected to the two ends of the hot water cylinder, a data line is fixedly connected to the back of the measuring instrument, a controller is fixedly connected to one end of the data line, and a pump for controlling the flow rate of the plastic liquid is fixedly connected to one side of the controller. The inside fixedly connected with of pump is first moulds the liquid pipe, the middle part fixedly connected with second of first plastic liquid pipe one end moulds the liquid pipe, water exchange device includes the water pipe, the middle part fixedly connected with check valve of water pipe, the equal fixedly connected with pipe in both ends of check valve, the inside swing joint of check valve has the piece that opens and shuts that makes rivers unidirectional passage.

Further, the steam heat sink includes ventilative shell, ventilative shell's inside fixedly connected with carries the thick pipe of vapor, ventilative shell's inside fixedly connected with is located the reduction vapor temperature's of thick pipe surface cooler, ventilative shell's inside fixedly connected with is located the motor of cooler bottom, the one end transmission of motor is connected with and is used for wind-force radiating fan, ventilative shell's bottom fixedly connected with fixed plate, thick pipe's top fixedly connected with valve, thick pipe's one end fixedly connected with thin pipe.

Further, normal-temperature water for cooling the plastic liquid is stored in the cooling device, the steam cooling device cools the steam generated in the flow rate control device and then is led into the cooling device, the pressure of the cooling device is increased, and the water after heat absorption enters the flow rate control device through the water exchange device.

Further, the through hole on the side surface of the second molding block is communicated with the inside of the water tank shell, water in the water tank shell is filled in the hole on the side surface of the second molding block, water in the water tank shell is exchanged with water in the flow rate control device, fluctuation of the resistance of the water tank shell can not occur when heat is stable, and fluctuation of the pointer of the pressure gauge can not occur when water exchange is stable.

Further, the controller controls the power of the pump, the diameter of the second plastic liquid pipe is six centimeters smaller than the diameter of the pump, when the pump power is fixed, the quantity of plastic liquid conveyed in the second plastic liquid pipe is controlled to be more accurate than the quantity of plastic liquid conveyed in the control pump, the flow velocity detector measures the flow velocity of the plastic liquid in the second plastic liquid pipe through electromagnetism, and the temperature of water in the hot water cylinder is kept constant through external heating.

Further, the opening and closing piece is composed of two sheets, the sheets are semi-annular, the diameters of two ends of the sheets are different, the radius of one side of the sheet, which is close to the water tank shell, is two centimeters larger than that of the other end, water in the water tank shell washes the sheets of the opening and closing piece out and then enters the hot water cylinder, and water in the hot water cylinder cannot wash the sheets out.

The invention has the technical effects and advantages that:

1. according to the invention, the cooling device is arranged, the inside of the hot water cylinder is always in a heating state, water vapor is continuously generated in the production process, the water vapor enters the cold water tank after being cooled by the vapor cooling device so as to increase the air pressure in the cold water tank, water is pressed out of the water pipe and enters the hot water cylinder to realize gas-liquid exchange, the heat of plastic liquid is absorbed by the water in the cold water tank so as to lead to temperature increase, part of hot water is input into the hot water cylinder, the water vapor is refrigerated and then is transmitted into the water tank shell by the cooler so as to realize constant temperature, the side surface of the second molding block is provided with a through hole, normal-temperature water is stored in the water tank shell, the plastic liquid still has high temperature after entering the cavity, the water in the water tank shell circulates in the hole at the side surface of the second molding block, so that the heat in the second molding block is taken away, the uniform cooling is realized due to the water communication at all parts in the water tank shell, the phenomenon that the product surface is prevented from generating folds due to inconsistent cooling rates, and the water cooling circulation and cooling treatment are realized without an additional water control system, and the method is simpler and more convenient.

2. According to the invention, the measuring instrument is arranged, the plastic liquid in the first plastic liquid pipe flows into the second plastic liquid pipe, and the diameter of the second plastic liquid pipe is smaller, so that the plastic liquid can realize more uniform temperature at each position under the action of the heat insulation material and the hot water in the hot water cylinder, the flow rate of the plastic liquid can be controlled more easily and accurately, the quantity of the plastic liquid injected into the cooling device can be controlled better, the flow rate detector detects the flow rate of the plastic liquid in the second plastic liquid pipe, the result is displayed on the display, the power of the pump is controlled according to the flow rate of the plastic liquid displayed by the display, the flow rate of the plastic liquid is controlled more accurately, the plastic liquid consumption produced by each part is determined, and the quality uniformity of each finished product is achieved.

Drawings

Fig. 1 is a schematic front view of the overall structure of the present invention.

Fig. 2 is a schematic rear view of the overall structure of the present invention.

Fig. 3 is a schematic view of the internal front view of the overall structure of the present invention.

FIG. 4 is a schematic view of the internal back of the overall structure of the present invention

FIG. 5 is a schematic cross-sectional view of a cooling device according to the present invention.

Fig. 6 is an exploded view of the cooling device according to the present invention.

FIG. 7 is a schematic cross-sectional view of a flow rate detecting device according to the present invention.

FIG. 8 is an exploded view of the vapor temperature reduction device of the present invention.

Fig. 9 is an exploded view of the water exchanging device according to the present invention.

The reference numerals are: 1. a cooling device; 101. a cold water tank; 1011. a water tank housing; 1012. a sealer; 1013. a fixing piece; 1014. a push rod; 1015. a push plate; 1016. a thimble; 1017. a limit rod; 1018. a sealing frame; 1019. a second shaping block; 1020. a limiting block; 102. a first shaping block; 103. a pressure gauge; 1031. a pressure gauge; 104. a waterproof housing; 1041. a thermistor; 1042. a temperature detector; 1043. a display panel; 2. a flow rate control device; 201. a second plastic liquid pipe; 202. a thermal insulation material; 203. a flow rate detector; 204. a hot water cylinder; 205. sealing the interface; 206. a seal ring; 207. a fixed rod; 208. a leakage preventing ring; 209. a measuring instrument; 210. a display; 211. a data line; 212. a first plastic liquid pipe; 213. a pump; 214. a controller; 3. a vapor cooling device; 301. a breathable shell; 302. a fixing plate; 303. a cooler; 304. a fan; 305. a motor; 306. a thin catheter; 307. a coarse catheter; 308. a valve; 4. a water exchange device; 401. a water pipe; 402. a fixed tube; 403. a one-way valve; 404. zhang Gepian; 5. a holder; 501. a fixed block; 502. a round bar; 6. a protective box; 601. and a support sheet.

Detailed Description

The embodiments of the present invention will be clearly and completely described below with reference to the drawings in the present invention, and the configurations of the structures described in the following embodiments are merely examples, and the injection mold for accurately controlling the flow rate according to the present invention is not limited to the structures described in the following embodiments, and all other embodiments obtained by a person skilled in the art without any inventive effort are within the scope of the present invention.

Referring to fig. 1-4, the invention provides an injection mold convenient for accurately controlling flow rate, which comprises a cooling device 1, wherein one side of the cooling device 1 is fixedly connected with a flow rate control device 2 for carrying plastic liquid in a heat preservation manner, the top of the flow rate control device 2 is fixedly connected with a steam cooling device 3 for cooling steam generated in the flow rate control device 2, one end of the steam cooling device 3 is fixedly connected with the cooling device 1, the cooling device 1 is connected with the back of the flow rate control device 2 through a water exchange device 4 for exchanging water, the other side of the cooling device 1 is movably connected with a fixer 5, and the outer side of the flow rate control device 2 is fixedly connected with a protective box 6;

in this embodiment, it should be specifically described that plastic liquid with a temperature between three hundred and five hundred degrees flows in the flow rate control device 2, warm water for cooling the plastic liquid is stored in the cooling device 1, the vapor cooling device 3 cools the vapor generated in the flow rate control device 2 and then guides the vapor into the cooling device 1, the pressure of the cooling device 1 is increased, and the water after heat absorption enters the flow rate control device 2 through the water exchange device 4, so that the temperature of the water in the cooling device 1 is balanced due to the loss of part of the water after heat absorption and the entering of part of the vapor after refrigeration.

Referring to fig. 5-6, the cooling device 1 includes a cold water tank 101 for storing water, the cold water tank 101 includes a water tank housing 1011, one side of the water tank housing 1011 is fixedly connected with a fixing plate 1013, the other side of the water tank housing 1011 is fixedly connected with a pressure gauge 103 for measuring the internal pressure of the water tank housing 1011, one side of the pressure gauge 103 is fixedly connected with a pressure gauge 1031 for displaying a pressure value, one side of the inside of the water tank housing 1011 is fixedly connected with a waterproof housing 104, the inside of the waterproof housing 104 is fixedly connected with a thermistor 1041 for changing a resistance value according to temperature, one side of the fixing plate 1013 is fixedly connected with a temperature detector 1042, the front of the temperature detector 1042 is fixedly connected with a display plate 1043 for displaying a temperature value, the inside of the water tank housing 1011 is fixedly connected with a second shaping block 1019, a through hole for water flow heat dissipation is arranged around the second shaping block 1019, the back of the second shaping block 1019 is fixedly connected with a sealing frame 1018, the back of the sealing frame 1020 is movably connected with a push plate 1015, the front of the push plate 1015 is fixedly connected with a push rod 1016 for pushing the plastic to drop, the back of the push rod 1015 is fixedly connected with a push rod 1016, the back of the push rod 1016 is fixedly connected with a push rod 1016, the front of the first shaping block 1016 is movably connected with a front of the shaping block 1015 is fixedly connected with a circular support plate 101, and the front of the shaping block 101 is fixedly connected with a circular support plate 101;

in this embodiment, to be specifically described, the through hole on the side of the second molding block 1019 is through with the inside of the water tank housing 1011, the water in the water tank housing 1011 fills the hole on the side of the second molding block 1019, the sealing frame 1018 is disposed in the gap between the limiting block 1020 and the second molding block 1019, the water in the water tank housing 1011 does not enter the gap between the limiting block 1020 and the second molding block 1019, the ejector pin 1016 and the push plate 1015 do not contact with water, the water does not enter the molding cavity from the hole on the back of the second molding block 1019 to affect the production, the water in the water tank housing 1011 exchanges with the water in the flow rate control device 2, the resistance of the waterproof housing 104 does not fluctuate when the heat is stable, and the pointer of the pressure gauge 1031 does not fluctuate when the water exchange is stable.

Referring to fig. 7, the flow rate control device 2 includes a second plastic liquid pipe 201 for conveying plastic liquid, a heat insulation material 202 for making the temperature of the second plastic liquid pipe 201 difficult to run off is fixedly connected to the outer side of the second plastic liquid pipe 201, a flow rate detector 203 for measuring the flow rate of the plastic liquid is fixedly connected to the outer surface of the second plastic liquid pipe 201 near the middle part, a fixing rod 207 is fixedly connected to the top of the flow rate detector 203, a leakage-proof ring 208 is fixedly connected to the outer side of the fixing rod 207 near the top, a measuring instrument 209 is fixedly connected to the top of the fixing rod 207, a display 210 for displaying the real-time rate of the plastic liquid is fixedly connected to the front side of the measuring instrument 209, a sealing interface 205 for sealing the second plastic liquid pipe 201 with the cooling device 1 is fixedly connected to one end of the second plastic liquid pipe 201, a hot water cylinder 204 is fixedly connected to the outer side of the heat insulation material 202, leakage-proof sealing rings 206 are fixedly connected to both ends of the hot water cylinder 204, a data line 211 for transmitting signals is fixedly connected to the back of the measuring instrument 209, one end of the data line 211 is fixedly connected to a controller 214, and one side of the controller 214 is fixedly connected to a pump 213 for controlling the flow rate of the plastic liquid; the inside of the pump 213 is fixedly connected with a first plastic liquid pipe 212, and the middle part of one end of the first plastic liquid pipe 212 is fixedly connected with a second plastic liquid pipe 201;

in this embodiment, to be specifically described, the controller 214 controls the power of the pump 213, so that the conveying speed of the plastic liquid is changed, the diameter of the second plastic liquid pipe 201 is six centimeters smaller than that of the pump 213, the temperature of the plastic liquid is not reduced under the heat preservation effect of the hot water pipe 204 in the plastic liquid conveying process, the flow rate detector 203 measures the flow rate of the plastic liquid in the second plastic liquid pipe 201 by electromagnetic, and the temperature of the water in the hot water pipe 204 is kept constant by external heating.

Referring to fig. 8-9, the vapor cooling device 3 comprises a ventilation shell 301, a coarse conduit 307 for conveying water vapor is fixedly connected to the inside of the ventilation shell 301, a temperature reducer 303 for reducing the temperature of the water vapor is fixedly connected to the inside of the ventilation shell 301, a motor 305 positioned at the bottom of the temperature reducer 303 is fixedly connected to the inside of the ventilation shell 301, a fan 304 for wind power heat radiation is connected to one end of the motor 305 in a transmission manner, a fixing plate 302 is fixedly connected to the bottom of the ventilation shell 301, a valve 308 for controlling the on-off of the coarse conduit 307 is fixedly connected to the top of the coarse conduit 307, a fine conduit 306 is fixedly connected to one end of the coarse conduit 307, the water exchange device comprises a water pipe, a one-way valve 403 is fixedly connected to the middle of the water pipe 401, fixing pipes 402 are fixedly connected to two ends of the one-way valve 403, and opening and closing pieces 404 for enabling water to pass through in one direction are movably connected to the inside of the one-way valve 403;

in this embodiment, it should be specifically described that, after the water vapor generated in the hot water tank 204 enters the coarse conduit 307 and the cooler 303 cools the water vapor, the water vapor enters the water tank housing 1011 through the fine conduit 306, heat is generated during the operation of the cooler 303, the fan 304 rotates to increase the air flow around the cooler 303, the opening and closing sheet 404 is formed by two sheets, the sheet is semi-annular, the radius of one side of the sheet close to the water tank housing 1011 is two centimeters greater than the radius of the other end, the water in the water tank housing 1011 washes out the sheet of the opening and closing sheet 404 and then enters the hot water tank 204, and the water in the hot water tank 204 cannot wash out the sheet.

The working principle of the invention is as follows: the plastic liquid is melted and then enters the second plastic liquid pipe 201 through the first plastic liquid pipe 212, the tail end of the second plastic liquid pipe 201 is connected with the hole in the middle of the first plastic block 102, the plastic liquid enters the cavity between the first plastic block 102 and the second plastic block 1019 through the hole in the middle of the first plastic block 102 and then fully contacts with the inner wall of the cavity, the plastic liquid is solidified after cooling to form a specific shape, the side surface of the second plastic block 1019 is provided with a through hole, normal temperature water is stored in the cavity formed by the water tank shell 1011 and the second plastic block 1019, the sealing frame 1018 ensures that water in the water tank shell 1011 does not enter the cavity of the second plastic block 1019, the plastic liquid transfers the temperature to the second plastic block 1019 after entering the cavity, the temperature of the plastic liquid flows in the hole in the side surface of the second plastic block 1019, the temperature of the second plastic block 1019 is reduced, the solidification effect is achieved more rapidly, after solidification, the push rod 1014 pushes the push plate 1015 to push the ejector pin 1016 out of the plastic finished product to finish production, so that the production efficiency is increased, and because the water in each part of the water tank shell 1011 is communicated, uniform cooling is realized, the fluidity of injection molding materials is consistent, the inconsistent cooling rate of each part of plastic liquid is prevented, the surface of the product is wrinkled, the inside of the hot water barrel 204 is always in a heating state, the purpose is to keep the plastic liquid flowing in the second plastic liquid pipe 201 warm, in the production process, water vapor is continuously generated in the inside of the hot water barrel 204, after the water vapor is cooled by the vapor cooling device 3, the water vapor enters the cold water barrel 101 to increase the air pressure in the cold water barrel 101, water enters the hot water barrel 204 from the water pipe 401 under the action of pressure to realize exchange, the heat of the plastic liquid is absorbed by the water in the cold water barrel 101 to cause the self temperature rise, but part of the hot water is input into the hot water barrel 204, the temperature reducer 303 is used for realizing constant temperature by conveying water vapor into the water tank shell 1011 after refrigerating, the thermistor 1041 is used for changing the self resistance through the water temperature inside the water tank shell 1011 to achieve the temperature measuring effect, the internal water temperature of the water tank shell 1011 is monitored in real time, the pressure gauge 103 is used for measuring the internal pressure of the water tank shell 1011, the temperature of the hot water drum 204 is convenient to adjust to achieve water changing balance, the plastic liquid in the first plastic liquid pipe 212 flows into the second plastic liquid pipe 201, the inner wall diameter of the second plastic liquid pipe 201 is small, the plastic liquid is enabled to realize uniform temperature everywhere under the hot water effect inside the heat insulation material 202 and the hot water drum 204, the flow rate of the plastic liquid is easier to be controlled accurately, the flow rate of the plastic liquid in the cooling device 1 is better mastered, the flow rate detector 203 is used for detecting the flow rate of the plastic liquid inside the second plastic liquid pipe 201, the result is displayed on the display 210, the power of the pump 213 is controlled according to the flow rate of the plastic liquid displayed by the display 210, the plastic liquid produced by each part is convenient to be controlled accurately, the quality uniformity of each finished product is achieved, the water quality is set, the water in the water tank 101 is enabled to enter the hot water drum 204 under the effect of the heat insulation material 101, but the cold water in the water tank 101 is not in the normal temperature is not equal to the water 101, but the cold water temperature in the water tank 101 is not equal to the water.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims

1. Injection mold convenient to accurate control velocity of flow, including cooling device (1), its characterized in that: one side of the cooling device (1) is fixedly connected with a flow rate control device (2) for carrying plastic liquid in a heat preservation way, the top of the flow rate control device (2) is fixedly connected with a steam cooling device (3) for cooling steam generated in the flow rate control device (2), one end of the steam cooling device (3) is fixedly connected with the cooling device (1), the cooling device (1) is connected with the back of the flow rate control device (2) through a water exchange device (4) for exchanging water, the other side of the cooling device (1) is movably connected with a fixer (5), and the outer side of the flow rate control device (2) is fixedly connected with a protective box (6);

the cooling device (1) comprises a cold water tank (101) for storing water, the cold water tank (101) comprises a water tank shell (1011), one side fixedly connected with stationary blade (1013) of water tank shell (1011), the inside pressure gauge (103) of the opposite side fixedly connected with measurement water tank shell (1011) of water tank shell (1011), one side fixedly connected with manometer (1031) of manometer (103), one side fixedly connected with waterproof shell (104) of water tank shell (1011) inside, the inside fixedly connected with thermistor (1041) of waterproof shell (104), one side fixedly connected with temperature detector (1042) of stationary blade (1013), the front fixedly connected with display panel (1043) of temperature detector (1042), the inside fixedly connected with second shaping piece (1019) of water tank shell (1011), be provided with the through-hole that is used for the rivers around the second shaping piece (1019), the back fixedly connected with sealing frame (1015) of second shaping piece (1019), the back fixedly connected with sealing frame (1020), the back of sealing frame (1020) is fixedly connected with a push pedal (1018), the front of push pedal (1018) is fixedly connected with a push pedal (1018), the front swing joint of second shaping piece (1019) has first shaping piece (102), the top fixedly connected with sealer (1012) of water tank case (1011), the front fixedly connected with gag lever post (1017) of stopper (1020), fixer (5) are including fixed block (501), one side swing joint of fixed block (501) has round bar (502), the inside fixedly connected with supporting plate (601) of protective housing (6).

2. An injection mold for facilitating accurate control of flow rate according to claim 1, wherein: the flow rate control device (2) comprises a second plastic liquid pipe (201) for conveying plastic liquid, a heat insulation material (202) is fixedly connected to the outer side of the second plastic liquid pipe (201), a flow rate detector (203) is fixedly connected to the outer surface of the second plastic liquid pipe (201) close to the middle, a fixing rod (207) is fixedly connected to the top of the flow rate detector (203), a leak-proof ring (208) is fixedly connected to the outer side of the fixing rod (207) close to the top, a measuring instrument (209) is fixedly connected to the top of the fixing rod (207), a display (210) for displaying the real-time rate of the plastic liquid is fixedly connected to the front side of the measuring instrument (209), a sealing interface (205) for sealing the second plastic liquid pipe (201) with the cooling device (1) is fixedly connected to one end of the second plastic liquid pipe, a hot water cylinder (204) is fixedly connected to the outer side of the heat insulation material (202), sealing rings (206) are fixedly connected to the two ends of the hot water cylinder (204), a data line (211) is fixedly connected to the back side of the measuring instrument (209), a data line (211) is fixedly connected to one side of the data line (214), and one side of the controller (213) is fixedly connected to the pump (213); the inside fixedly connected with of pump (213) is first moulds liquid pipe (212), the middle part fixedly connected with second that first moulded liquid pipe (212) one end moulds liquid pipe (201), water exchange device (4) are including water pipe (401), the middle part fixedly connected with check valve (403) of water pipe (401), the equal fixedly connected with of both ends of check valve (403) is fixed pipe (402), the inside swing joint of check valve (403) has opening and closing piece (404) that make rivers unidirectional passage.

3. An injection mold for facilitating accurate control of flow rate according to claim 1, wherein: the steam cooling device (3) comprises a ventilation shell (301), a coarse duct (307) for conveying steam is fixedly connected to the inside of the ventilation shell (301), a cooler (303) for reducing the temperature of the steam is fixedly connected to the inside of the ventilation shell (301), the cooler (303) is positioned on the outer surface of the coarse duct (307), a motor (305) is fixedly connected to the inside of the ventilation shell (301), a fan (304) for cooling by wind is connected to one end of the motor (305) in a transmission mode, a fixing plate (302) is fixedly connected to the bottom of the ventilation shell (301), a valve (308) is fixedly connected to the top of the coarse duct (307), and a fine duct (306) is fixedly connected to one end of the coarse duct (307).

4. An injection mold for facilitating accurate control of flow rate according to claim 1, wherein: the cooling device is characterized in that normal-temperature water for cooling plastic liquid is stored in the cooling device (1), the steam cooling device (3) cools steam generated in the flow rate control device (2) and then guides the steam into the cooling device (1), the pressure of the cooling device (1) is increased, and the water after heat absorption enters the flow rate control device (2) through the water exchange device (4).

5. An injection mold for facilitating accurate control of flow rate according to claim 1, wherein: the through hole on the side surface of the second shaping block (1019) is communicated with the inside of the water tank shell (1011), water in the water tank shell (1011) is filled in the hole on the side surface of the second shaping block (1019), water in the water tank shell (1011) is exchanged with water in the flow rate control device (2), fluctuation does not occur in the resistance value of the waterproof shell (104) when heat is stable, and fluctuation does not occur in the pointer of the pressure gauge (1031) when water exchange is stable.

6. An injection mold for facilitating accurate control of flow rate according to claim 2, wherein: the controller (214) controls the power of the pump (213), the diameter of the second plastic liquid pipe (201) is six centimeters smaller than that of the pump (213), the flow rate detector (203) measures the flow rate of plastic liquid in the second plastic liquid pipe (201) through electromagnetism, and the temperature of water in the hot water cylinder (204) is kept constant through external heating.

7. An injection mold for facilitating accurate control of flow rate according to claim 2, wherein: the opening and closing piece (404) is composed of two sheets, the sheets are semi-annular, the radius of one side of each sheet close to the water tank shell (1011) is two cm larger than that of the other end, water in the water tank shell (1011) washes out the sheets of the opening and closing piece (404) and then enters the hot water cylinder (204), and water in the hot water cylinder (204) cannot wash out the sheets.