CN111559059A - Cooling forming system of household appliance injection mold - Google Patents
Cooling forming system of household appliance injection mold Download PDFInfo
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- CN111559059A CN111559059A CN202010546367.9A CN202010546367A CN111559059A CN 111559059 A CN111559059 A CN 111559059A CN 202010546367 A CN202010546367 A CN 202010546367A CN 111559059 A CN111559059 A CN 111559059A
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- outlet pipe
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- 238000001816 cooling Methods 0.000 title claims abstract description 126
- 238000002347 injection Methods 0.000 title claims abstract description 26
- 239000007924 injection Substances 0.000 title claims abstract description 26
- 239000000110 cooling liquid Substances 0.000 claims abstract description 42
- 238000000465 moulding Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 114
- 238000001514 detection method Methods 0.000 claims description 45
- 230000000694 effects Effects 0.000 abstract description 13
- 238000001746 injection moulding Methods 0.000 abstract description 6
- 239000002826 coolant Substances 0.000 description 22
- 239000007788 liquid Substances 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002633 protecting effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/7604—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76177—Location of measurement
- B29C2945/76254—Mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76655—Location of control
- B29C2945/76732—Mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of injection molding, and particularly relates to a cooling molding system of a household appliance injection mold. The invention has the following effects: the mold can be cooled without a large amount of cooling liquid.
Description
Technical Field
The invention relates to the technical field of injection molding, in particular to a cooling molding system of a household appliance injection mold.
Background
The household appliance is a short for household appliances. Electrical appliances are understood in the narrow sense to mean loads on electrical circuits and devices for controlling, regulating or protecting electrical circuits, motors, etc., such as loudspeakers, switches, varistors, fuses, etc. Electrical appliances in the broad sense refer to products that work using a combination of electrical components, typically using electricity as a source of energy.
The plastic part of the existing household appliance is formed by injection molding, which is also called injection molding, and is a molding method combining injection molding 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.
Chinese patent No. CN210132725U discloses an injection mold cooling system and an injection mold, which includes a nozzle, a fixing insert and a sealing ring, wherein a mounting hole is formed in the middle of the fixing insert, the nozzle is disposed in the mounting hole, the lower end of the nozzle penetrates through the sealing ring to be connected with the injection mold, and a water outlet is formed in one side of the sealing ring. Above-mentioned injection mold cooling system, during the use, the coolant liquid is intake through the spray tube, then reaches the highest point department of product in the cavity through the spray tube, comes the parallel position to flow through the delivery port again after the coolant liquid is full to mode installation spray tube such as inlay, threaded connection.
When the injection mold cooling system and the injection mold are cooled, a large amount of cooling liquid needs to be prepared when the mold is large, and when a plurality of groups of molds are cooled, the situation that the cooling liquid is insufficient may exist.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a cooling and forming system of a household appliance injection mold, which has the following effects: the mold can be cooled without a large amount of cooling liquid.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a household electrical appliances injection mold's cooling forming system, includes the mould body, it has water inlet and delivery port to open on the mould body, the water inlet even has the cooling device who is used for carrying out cooling treatment to the coolant liquid, cooling device's play water end with the water inlet intercommunication.
Through adopting above-mentioned technical scheme, when using this household electrical appliances injection mold's cooling forming system, when the mould body cools off, the coolant liquid flows out through the delivery port, flows to cooling device, carries out cooling treatment to the coolant liquid through cooling device, then flows back to the mouth of a river on the mould body, cools off the mould once more to make the coolant liquid carry out the used cyclically, need not a large amount of coolant liquid alright cool off the mould.
The invention is further configured to: the cooling device comprises a shell, a water inlet pipe, a water outlet pipe, a cooling pipe and a cooling piece;
the shell is used for wrapping the water inlet pipe, the water outlet pipe, the cooling pipe and the cooling part;
one end of the water inlet pipe is communicated with the water outlet, and the other end of the water inlet pipe is communicated with the cooling pipe;
one end of the water outlet pipe is communicated with the water inlet, and the other end of the water outlet pipe is communicated with the cooling pipe;
the cooling piece is used for cooling the cooling pipe;
the cooling liquid flows into the cooling pipe from the water inlet pipe and then flows out from the water outlet pipe.
Through adopting above-mentioned technical scheme, when using this household electrical appliances injection mold's cooling forming system, the coolant liquid flows to the cooling tube through the inlet pipe, cools off the coolant liquid in the cooling tube through the cooling piece, then the cooler passes through the outlet pipe and flows, then cools off the mould.
The invention is further configured to: the cooling pipe is bent for multiple times to be wavy.
Through adopting above-mentioned technical scheme, increased the length of cooling tube at cooling treatment to reinforcing cooling effect.
The invention is further configured to: the cooling piece is a fan, a plurality of air inlets are formed in one side of the outer shell, and an air outlet pipe is connected to the side, opposite to the side with the air inlets, of the outer shell.
Through adopting above-mentioned technical scheme, realize refrigerated effect, the fan is the market purchase piece, convenient to use and acquisition.
The invention is further configured to: the cooling device also comprises a backflow component, the backflow component comprises a backflow pipe and a temperature detection device, the backflow pipe is communicated with the water outlet pipe and the cooling pipe, and the temperature detection device comprises a temperature detection component, a control component and a switching component;
the temperature detection assembly is fixedly connected to the side wall of the water outlet pipe and is used for detecting the temperature value of the cooling liquid in the water outlet pipe so as to output a temperature detection signal;
the control component is coupled to the temperature detection component and responds to the temperature detection signal to output a control signal;
the on-off component comprises two electromagnetic valves, one electromagnetic valve is arranged on the return pipe, the other electromagnetic valve is arranged on the water outlet pipe and is positioned behind a connection node of the return pipe along the water flow direction, and the on-off component is coupled to the control component and responds to a control signal to start or close the electromagnetic valves;
when the temperature detection assembly detects that the temperature of the cooling liquid is higher than a preset value, the on-off assembly responds to a control signal to start a solenoid valve arranged on the return pipe and close the solenoid valve arranged on the water outlet pipe so that the cooling liquid flows back and is cooled again.
Through adopting above-mentioned technical scheme, when the temperature detection subassembly detected that coolant liquid temperature is higher than the default, the logical subassembly is responded to control signal and is made the coolant liquid backward flow cool off again with the solenoid valve of start-up installation in the back flow and close the solenoid valve of installing in the outlet pipe to improve the cooling effect of mould body.
The invention is further configured to: the temperature detection assembly comprises a temperature sensor, and the temperature sensor is used for detecting the temperature value of the cooling liquid in the water outlet pipe so as to output a temperature detection signal.
Through adopting above-mentioned technical scheme, temperature sensor can detect the temperature value, and the function that the temperature of being convenient for detected realizes, and simultaneously, temperature sensor is the market purchase piece, is convenient for acquire and use.
The invention is further configured to: the control assembly comprises a comparator and a reference value adjusting part, wherein the reference value adjusting part is used for adjusting and outputting a reference signal, a forward input end of the comparator is coupled with the temperature detection assembly to receive the temperature detection signal, a reverse input end of the comparator is coupled with the reference value adjusting part, and an output end of the comparator is used for outputting a control signal.
By adopting the technical scheme, the temperature detection component detects the obtained temperature value, the temperature value needs to be compared with a reference value, when the measured temperature value is higher than the reference value, the control component outputs a starting control signal to control the on-off component to start the electromagnetic valve installed on the return pipe and close the electromagnetic valve installed on the water outlet pipe so as to enable the cooling liquid to flow back for cooling again, and when the measured temperature value is lower than the reference value, the control component outputs a closing control signal to close the electromagnetic valve installed on the return pipe and start the electromagnetic valve installed on the water outlet pipe so as to enable the cooling liquid to flow into the die body for cooling the die.
The invention is further configured to: the reference value adjusting part includes a first resistor and a second resistor;
one end of the first resistor is coupled to a voltage VDD, and the other end of the first resistor is coupled to an inverting input end of the comparator;
the second resistor is a variable resistor, one end of the second resistor is coupled to ground, and the other end of the second resistor is coupled to a connection node between the inverting input end of the comparator and the first resistor.
By adopting the technical scheme, the voltage input by the reverse input end of the comparator is controlled by adjusting the resistance value of the second resistor, so that the reference value adjusting part is used for adjusting the reference value.
The invention is further configured to: the on-off component also comprises a third resistor, a triode, a relay and a normally closed contact switch;
one end of the third resistor is coupled to the output end of the comparator, and the other end of the third resistor is coupled to the base electrode of the triode;
the positive electrode of the relay is coupled with the emitting electrode of the triode, the negative electrode of the relay is coupled with the ground, and the relay is used for controlling the on-off of the normally closed contact switch;
the collector of the triode is coupled with the negative electrode of the electromagnetic valve arranged on the return pipe, and the positive electrode end of the electromagnetic valve arranged on the return pipe is coupled with a power supply VCC;
install in the anodal coupling of the solenoid valve of outlet pipe in power VCC and install in the connected node of the solenoid valve of back flow, install in the solenoid valve negative pole of outlet pipe and be coupled in normally closed contact switch, the normally closed contact switch other end is coupled in ground.
By adopting the technical scheme, when the temperature detection assembly detects that the temperature of the cooling liquid is higher than the preset value, the comparator outputs a control signal, then the triode is conducted, the relay is started to disconnect the normally closed contact switch, and therefore the electromagnetic valve arranged on the return pipe is started and the electromagnetic valve arranged on the water outlet pipe is closed to enable the cooling liquid to flow back and be cooled again; when the temperature detection assembly does not detect that the temperature of the cooling liquid is higher than the preset value, the comparator cannot output a control signal, the triode cannot be conducted at the moment, and the relay is closed to enable the normally closed contact switch to be in a closed rotating state, so that the electromagnetic valve mounted on the return pipe is closed, and the electromagnetic valve mounted on the water outlet pipe is started to enable the cooling liquid to flow to the water inlet to cool the die body.
In summary, the invention includes at least one of the following beneficial technical effects:
1. a cooling device is arranged to cool the cooling liquid, then the cooling liquid flows back to the water inlet on the die body, and the die is cooled again, so that the cooling liquid can be recycled, and the die can be cooled without a large amount of cooling liquid;
2. when the temperature of the cooling liquid in the water outlet pipe is higher than the preset value, the cooling liquid flows back to the cooling pipe to be cooled again, and therefore the cooling effect of the die body is improved.
Drawings
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a rack and cooling device according to an embodiment of the present invention;
FIG. 3 is a schematic view showing the internal structure of a cooling apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic view illustrating a piping connection relationship of a cold water tank according to an embodiment of the present invention;
fig. 5 is a circuit diagram of a temperature detection device according to an embodiment of the present invention.
In the figure, 1, a die body; 11. a water inlet; 12. a water outlet; 2. a cooling device; 21. a housing; 211. an air inlet; 212. an air outlet pipe; 22. a water inlet pipe; 23. a water outlet pipe; 24. a cooling tube; 25. a cooling member; 26. a reflow assembly; 261. a return pipe; 262. a hot water tank; 263. a cold water tank; 264. an electromagnetic valve; 3. a frame; 31. a placement chamber.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the cooling forming system for the household appliance injection mold disclosed by the invention comprises a mold body 1, wherein a water inlet 11 and a water outlet 12 are formed in the mold body 1, the water inlet 11 is connected with a cooling device 2 for cooling treatment of cooling liquid, and a water outlet end of the cooling device 2 is communicated with the water inlet 11.
Referring to fig. 2 and 3, in particular, the cooling device 2 includes a housing 21, a water inlet pipe 22, a water outlet pipe 23, a cooling pipe 24, and a cooling member 25. Be used for parcel inlet tube 22, outlet pipe 23, cooling tube 24 and cooling part 25 with the inside spare part of protecting sheathing 21 on the shell 21, inlet tube 22 one end and delivery port 12 intercommunication, the inlet tube 22 other end and cooling tube 24 intercommunication, outlet pipe 23 one end and water inlet 11 intercommunication, the outlet pipe 23 other end and cooling tube 24 intercommunication, cooling part 25 is used for cooling tube 24, the coolant liquid flows into cooling tube 24 from inlet tube 22 and then flows out from outlet pipe 23.
When the cooling forming system of the household appliance injection mold is used, cooling liquid flows to the cooling pipe 24 through the water inlet pipe 22, the cooling liquid in the cooling pipe 24 is cooled through the cooling piece 25, then the cooler flows out through the water outlet pipe 23, and then the mold is cooled.
Referring to fig. 2 and 3, in the illustrated embodiment, the cooling pipe 24 is bent several times to form a wave shape, so that the length of the cooling pipe 24 in the cooling process is increased, thereby enhancing the cooling effect; the cooling piece 25 is a fan, a plurality of air inlets 211 are formed in one side of the shell 21, an air outlet pipe 212 is connected to the side, opposite to the side with the air inlets 211, of the shell 21, the fan achieves a cooling effect, and the fan is a commercially available piece and is convenient to use and obtain.
Referring to fig. 2, further, cooling device 2 can set up to the multiunit, and multiunit cooling device 2 places in frame 3, and multiunit cooling device 2's play tuber pipe 212 communicates to the main tuber pipe, because the wind temperature in the play tuber pipe 212 is higher, is connected to the main tuber pipe with multiunit cooling device 2's play tuber pipe 212 and then discharges, concentrates hot-blast together, is convenient for retrieve the heat, if can use hot-blast air to air-dry etc. the product after the washing, green. In the illustrated embodiment, the rack 3 is a welded rack, the rack 3 is formed by welding steel pipes and steel plates, six cooling devices 2 are arranged in six groups, the rack 3 is divided into six placing cavities 31 by the steel plates, the six cooling devices 2 are placed in the six placing cavities 31 in a one-to-one correspondence manner, which is only a schematic description here, and does not limit the number of the cooling devices 2, and the number of the cooling devices 2 can be adjusted according to actual production requirements.
Referring to fig. 3, the cooling device 2 further includes a backflow component 26, the backflow component 26 includes a backflow pipe 261 and a temperature detection device, the backflow pipe 261 is communicated with the water outlet pipe 23 and the cooling pipe 24, and the temperature detection device includes a temperature detection component, a control component and an on-off component. The temperature detection assembly is fixedly connected to the side wall of the water outlet pipe 23 and is used for detecting the temperature value of the cooling liquid in the water pipe 23 so as to output a temperature detection signal; the control assembly is coupled to the temperature detection assembly and responds to the temperature detection signal to output a control signal; the on/off assembly includes two solenoid valves 264, one of the solenoid valves 264 is installed on the return pipe 261, the other solenoid valve 264 is installed on the outlet pipe 23 behind the connection node of the return pipe 261 in the water flow direction, and the on/off assembly is coupled to the control assembly and responds to the control signal to turn on or off the solenoid valve 264.
In use, when the temperature detecting assembly detects that the temperature of the cooling liquid is higher than the preset value, the closing assembly responds to the control signal to start the solenoid valve 264 mounted on the return pipe 261 and close the solenoid valve 264 mounted on the water outlet pipe 23 so as to enable the cooling liquid to flow back and be cooled again, thereby improving the cooling effect of the mold body 1.
Referring to fig. 3, in the illustrated embodiment, the return pipe 261 is communicated with a hot water tank 262, the hot water tank 262 is communicated with the water inlet pipe 22 and the cooling pipe 24 respectively, a water pump for pumping out the coolant in the hot water tank 262 is installed on the cooling pipe 24, that is, the water inlet pipe 22 flows the coolant with a higher temperature into the hot water tank 262, the cooling pipe 24 pumps out the coolant in the hot water tank 262 for cooling, and when the temperature in the coolant is still higher and does not meet a preset value, the coolant flows back into the hot water tank 262 for cooling again.
Referring to fig. 4, a cold water tank 263 may be further added to improve the cooling effect, specifically, the cold water tank is disposed between the connection node of the water outlet pipe 23 located on the return pipe 261 and the water inlet 11, the water outlet pipe 23 is divided into two sections from the cold water tank 263, that is, two ends of the water outlet pipe 23 of the first section are respectively connected to the cooling pipe 24 and the cold water tank 263, two ends of the water outlet pipe 23 of the second section are respectively connected to the cold water tank 263 and the water inlet 11, and the water outlet pipe 23 of the second section is provided with a water pump to pump the cooling water in the cold water tank 263 to the. When the temperature detecting component detects that the temperature of the cooling liquid is higher than the preset value, the on-off component responds to the control signal to start the solenoid valve 264 mounted on the return pipe 261 and close the solenoid valve 264 mounted on the water outlet pipe 23 so as to enable the cooling liquid to flow back for cooling again, at the moment, the mold body 1 is not cooled by the cooling liquid, and the mold body 1 can be always in a cooling state by arranging the cold water tank 263, so that the cooling efficiency and the cooling effect are improved.
Next, the three components of the temperature detection device will be described in detail.
Referring to fig. 5, in particular, the temperature detection assembly includes a temperature sensor for detecting a temperature value of the cooling liquid in the water pipe 23 to output a temperature detection signal. Temperature sensor can detect the temperature value, and the function that the temperature of being convenient for detected realizes, and simultaneously, temperature sensor is the market purchase piece, is convenient for acquire and use.
The control assembly comprises a comparator and a reference value adjusting part, the reference value adjusting part is used for adjusting and outputting a reference signal, a forward input end of the comparator is coupled with the temperature detection assembly to receive the temperature detection signal, a reverse input end of the comparator is coupled with the reference value adjusting part, and an output end of the comparator is used for outputting a control signal.
Wherein the reference value adjusting part comprises a first resistor and a second resistor; one end of the first resistor is coupled to a voltage VDD, and the other end of the first resistor is coupled to an inverted input end of the comparator; the second resistor is a variable resistor, one end of the second resistor is coupled to the ground, the other end of the second resistor is coupled to a connection node between the reverse input end of the comparator and the first resistor, and the voltage input by the reverse input end of the comparator is controlled by adjusting the resistance value of the second resistor, so that the reference value adjusting part is used for adjusting the reference value.
When the temperature detection device is used, the temperature detection assembly detects the obtained temperature value and needs to be compared with a reference value, when the measured temperature value is higher than the reference value, the control assembly outputs a starting control signal, and when the measured temperature value is lower than the reference value, the control assembly outputs a closing control signal.
The on-off component also comprises a third resistor, a triode, a relay and a normally closed contact switch; one end of the third resistor is coupled to the output end of the comparator, and the other end of the third resistor is coupled to the base electrode of the triode; the positive pole of the relay is coupled with the emitting pole of the triode, the negative pole of the relay is coupled with the ground, and the relay is used for controlling the on-off of the normally closed contact switch; the collector of the triode is coupled with the negative electrode of the electromagnetic valve 264 arranged on the return pipe 261, and the positive electrode end of the electromagnetic valve 264 arranged on the return pipe 261 is coupled with the power supply VCC; the positive pole of the solenoid valve 264 installed on the water outlet pipe 23 is coupled to the connection node between the power source VCC and the solenoid valve 264 installed on the return pipe 261, the negative pole of the solenoid valve 264 installed on the water outlet pipe 23 is coupled to the normally closed contact switch, and the other end of the normally closed contact switch is coupled to the ground.
When the comparator outputs a control signal, then the triode is conducted, the relay is started to disconnect the normally closed contact switch, so that the electromagnetic valve 264 arranged on the return pipe 261 is started, and the electromagnetic valve 264 arranged on the water outlet pipe 23 is closed to enable the cooling liquid to flow back and be cooled again; when the comparator does not output a control signal, the transistor cannot be conducted at this time, the relay is turned off to make the normally closed contact switch in a closed state, thereby closing the solenoid valve 264 installed on the return pipe 261 and starting the solenoid valve 264 installed on the water outlet pipe 23 to make the coolant flow to the water inlet 11 to cool the mold body 1.
The implementation principle of the embodiment is as follows:
when using this household electrical appliances injection mold's cooling forming system, when mould body 1 cools off, the coolant liquid flows out through delivery port 12, flows to cooling device 2, carries out cooling treatment to the coolant liquid through cooling device 2, then flows back to water inlet 11 on the mould body 1, cools off the mould once more to make the coolant liquid carry out the used in circulation, need not a large amount of coolant liquid alright cool off the mould.
Meanwhile, when the temperature detection assembly detects that the temperature of the cooling liquid is higher than a preset value, the comparator outputs a control signal, then the triode is conducted, the relay is started to disconnect the normally closed contact switch, and therefore the electromagnetic valve 264 mounted on the return pipe 261 is started, the electromagnetic valve 264 mounted on the water outlet pipe 23 is closed, and the cooling liquid flows back to be cooled again; when the temperature detection assembly does not detect that the temperature of the cooling liquid is higher than the preset value, the comparator cannot output a control signal, the triode cannot be conducted at the moment, and the relay is closed to enable the normally closed contact switch to be in a closed rotating state, so that the electromagnetic valve 264 installed on the return pipe 261 is closed, the electromagnetic valve 264 installed on the water outlet pipe 23 is started, the cooling liquid flows to the water inlet 11 to cool the die body 1, and the cooling effect of the die body 1 is improved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. The utility model provides a household electrical appliances injection mold's cooling forming system, includes mould body (1), its characterized in that: the mould comprises a mould body (1), and is characterized in that a water inlet (11) and a water outlet (12) are formed in the mould body, the water inlet (11) is communicated with a cooling device (2) for cooling liquid, and the water outlet end of the cooling device (2) is communicated with the water inlet (11).
2. The cooling molding system of the household appliance injection mold according to claim 1, wherein: the cooling device (2) comprises a shell (21), a water inlet pipe (22), a water outlet pipe (23), a cooling pipe (24) and a cooling piece (25);
the shell (21) is used for wrapping the water inlet pipe (22), the water outlet pipe (23), the cooling pipe (24) and the cooling part (25);
one end of the water inlet pipe (22) is communicated with the water outlet (12), and the other end of the water inlet pipe (22) is communicated with the cooling pipe (24);
one end of the water outlet pipe (23) is communicated with the water inlet (11), and the other end of the water outlet pipe (23) is communicated with the cooling pipe (24);
the cooling piece (25) is used for cooling the cooling pipe (24);
the cooling liquid flows into the cooling pipe (24) from the water inlet pipe (22) and then flows out from the water outlet pipe (23).
3. The cooling molding system of the household appliance injection mold according to claim 2, wherein: the cooling pipe (24) is bent for multiple times to be wavy.
4. The cooling molding system of the household appliance injection mold according to claim 2, wherein: the cooling piece (25) is a fan, a plurality of air inlets (211) are formed in one side of the shell (21), and an air outlet pipe (212) is connected to one side, opposite to the side with the air inlets (211), of the shell (21).
5. The cooling molding system of the household appliance injection mold according to any one of claims 2 to 4, wherein: the cooling device (2) further comprises a backflow component (26), the backflow component (26) comprises a backflow pipe (261) and a temperature detection device, the backflow pipe (261) is communicated with the water outlet pipe (23) and the cooling pipe (24), and the temperature detection device comprises a temperature detection component, a control component and a closing component;
the temperature detection assembly is fixedly connected to the side wall of the water outlet pipe (23), and is used for detecting the temperature value of cooling liquid in the water outlet pipe (23) to output a temperature detection signal;
the control component is coupled to the temperature detection component and responds to the temperature detection signal to output a control signal;
the on-off component comprises two solenoid valves (264), wherein one solenoid valve (264) is installed on the return pipe (261), the other solenoid valve (264) is installed on the water outlet pipe (23) and is located behind a connection node of the return pipe (261) along the water flow direction, and the on-off component is coupled to the control component and responds to a control signal to start or close the solenoid valves (264);
when the temperature detection component detects that the temperature of the cooling liquid is higher than a preset value, the on-off component responds to a control signal to start a solenoid valve (264) arranged on the return pipe (261) and close the solenoid valve (264) arranged on the water outlet pipe (23) so that the cooling liquid flows back and is cooled again.
6. The cooling molding system of household appliance injection mold according to claim 5, characterized in that: the temperature detection assembly comprises a temperature sensor and is used for detecting the temperature value of the cooling liquid in the water outlet pipe (23) so as to output a temperature detection signal.
7. The cooling molding system of household appliance injection mold according to claim 6, characterized in that: the control assembly comprises a comparator and a reference value adjusting part, wherein the reference value adjusting part is used for adjusting and outputting a reference signal, a forward input end of the comparator is coupled with the temperature detection assembly to receive the temperature detection signal, a reverse input end of the comparator is coupled with the reference value adjusting part, and an output end of the comparator is used for outputting a control signal.
8. The cooling molding system of a household appliance injection mold according to claim 7, wherein: the reference value adjusting part includes a first resistor and a second resistor;
one end of the first resistor is coupled to a voltage VDD, and the other end of the first resistor is coupled to an inverting input end of the comparator;
the second resistor is a variable resistor, one end of the second resistor is coupled to ground, and the other end of the second resistor is coupled to a connection node between the inverting input end of the comparator and the first resistor.
9. The cooling molding system of a household appliance injection mold according to claim 8, wherein: the on-off component also comprises a third resistor, a triode, a relay and a normally closed contact switch;
one end of the third resistor is coupled to the output end of the comparator, and the other end of the third resistor is coupled to the base electrode of the triode;
the positive electrode of the relay is coupled with the emitting electrode of the triode, the negative electrode of the relay is coupled with the ground, and the relay is used for controlling the on-off of the normally closed contact switch;
the collector of the triode is coupled with the negative electrode of the electromagnetic valve (264) arranged on the return pipe (261), and the positive electrode end of the electromagnetic valve (264) arranged on the return pipe (261) is coupled with the power supply VCC;
the positive pole of the solenoid valve (264) installed on the water outlet pipe (23) is coupled to the connection node of the power supply VCC and the solenoid valve (264) installed on the return pipe (261), the negative pole of the solenoid valve (264) installed on the water outlet pipe (23) is coupled to the normally closed contact switch, and the other end of the normally closed contact switch is coupled to the ground.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010546367.9A CN111559059A (en) | 2020-06-15 | 2020-06-15 | Cooling forming system of household appliance injection mold |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010546367.9A CN111559059A (en) | 2020-06-15 | 2020-06-15 | Cooling forming system of household appliance injection mold |
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| CN202010546367.9A Pending CN111559059A (en) | 2020-06-15 | 2020-06-15 | Cooling forming system of household appliance injection mold |
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| CN204795958U (en) * | 2015-06-15 | 2015-11-18 | 柯良斌 | High -efficient coolant tank |
| CN207403123U (en) * | 2017-10-09 | 2018-05-25 | 江门市新光源制刷有限公司 | A kind of water cooling plant of injection machine mould |
| CN208968228U (en) * | 2017-01-05 | 2019-06-11 | 宁波市新海建设工程材料测试有限公司 | Air dry oven |
| CN209832522U (en) * | 2019-04-21 | 2019-12-24 | 贵州煜明精密模具有限公司 | Cooling structure of injection mold |
| CN110815751A (en) * | 2019-12-10 | 2020-02-21 | 苏州富翔塑胶有限公司 | A kind of circulating water cooling device and method for injection mold |
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- 2020-06-15 CN CN202010546367.9A patent/CN111559059A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204795958U (en) * | 2015-06-15 | 2015-11-18 | 柯良斌 | High -efficient coolant tank |
| CN208968228U (en) * | 2017-01-05 | 2019-06-11 | 宁波市新海建设工程材料测试有限公司 | Air dry oven |
| CN207403123U (en) * | 2017-10-09 | 2018-05-25 | 江门市新光源制刷有限公司 | A kind of water cooling plant of injection machine mould |
| CN209832522U (en) * | 2019-04-21 | 2019-12-24 | 贵州煜明精密模具有限公司 | Cooling structure of injection mold |
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