CN217803066U

CN217803066U - Hot runner mechanism with exhaust mechanism

Info

Publication number: CN217803066U
Application number: CN202221504052.9U
Authority: CN
Inventors: 钟文昆; 王文英
Original assignee: Shanghai Morui Electromechanical Equipment Co ltd
Current assignee: Shanghai Morui Electromechanical Equipment Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-11-15
Anticipated expiration: 2032-06-15

Abstract

A hot runner mechanism with an exhaust mechanism comprises a plurality of hot runner bodies, a stabilized voltage power supply, a vibration motor, a temperature detection circuit, a time control circuit and an exhaust mechanism; a temperature switch matched with the temperature monitoring mechanism is arranged at the outer side end of the shell, and the temperature detection circuit, the time control circuit and the voltage stabilizing power supply are arranged in the electric cabinet and are electrically connected; the vibrating motor is arranged outside the shell, and the exhaust mechanism is arranged on the shell. After the casing caused the temperature to reduce because of various reasons in this novel application, temperature detect circuit's bee calling organ can in time sound production suggestion staff and examine concrete reason, has guaranteed the normal clear of production progress. The time control circuit can control the vibration motor to work at intervals of a certain time, so that air entering the shell and the like is discharged outwards from the fluid raw material in the shell through the exhaust mechanism, the probability of holes in subsequent finished products is reduced, and the quality of the products after subsequent pouring is ensured. Based on the above, so this novel application prospect that has.

Description

Hot runner mechanism with exhaust mechanism

Technical Field

The utility model relates to a corollary equipment technical field, especially a hot runner mechanism with exhaust mechanism moulds plastics.

Background

In the injection molding industry, a hot runner generally refers to a pipeline between a heating and melting device (such as a screw extruder) and a casting mold, and plastic raw material fluid output by the heating and melting device in the previous process is ensured by a method of heating (the outer side of the hot runner is divided into two layers, an annular electric heating mechanism is installed between the two layers, the electric heating mechanism keeps the temperature of about 200 ℃, an annular constant-temperature hollow electric heating plate finished product is generally adopted, the power is about 300W), and the plastic raw material fluid is kept in a melting state before entering the mold through a mold plastic raw material inlet (sprue) (a plurality of sprues can correspond to one mold, or a plurality of sprues can correspond to a plurality of molds), so that the fluid raw material entering the mold is uniformly dispersed, and a powerful technical support is played for ensuring the quality of a poured plastic product.

Under normal conditions, a plurality of hot runners are provided, the upper parts of the plurality of hot runners are respectively arranged at the lower end outside a shell, the upper ends of the plurality of hot runners are connected with a hollow shell in parallel, the lower end of a feed pipe is arranged outside the upper end of the shell and communicated with the shell, the upper ends of the feed pipes are connected with a discharge pipe of heating and melting equipment, the lower ends of nozzles of the plurality of hot runners are arranged at the upper parts of a plurality of mould raw material inlets, a valve rod driven by an electric driving mechanism (generally an electric driving mechanism for driving the valve rod to move by an electric push rod) is vertically arranged in each hot runner (the electric driving mechanism is arranged outside the upper end of the shell, the upper end of the valve rod is welded with a lower movable shaft of the electric driving mechanism, the valve rod enters the hot runners through the upper ends of the hot runners), during work, a worker controls the electric driving mechanism to drive the valve rod to move downwards through a power switch to close the lower ends of the inner ends of the hot runner nozzles and close fluid raw materials entering the moulds (the upper ends of the nozzles are arranged at the lower ends of the hot runners and the lower middle parts of the hot runners and have a fluid hole), or the lower ends of the hot runner nozzles are opened to control fluid to enter the moulds (the next work, the lower ends of the hot runner and the hot runner can melt the raw materials remained in the moulds normally. The existing hot runner is limited by the structure, the shell, the hot runner and the outside are in a sealed and isolated state, so that when external air enters the shell and enters the mold through the hot runner, the probability of occurrence of holes and other phenomena in a finished product after injection molding is caused, and adverse effects are brought to the quality of the finished product. In addition, the existing hot runner does not have a practical temperature detection mechanism, and after the temperature of the hot runner body is reduced during working (for example, the raw material is stopped being input by heating and melting equipment, and the raw material enters the shell without hot melting, so that adverse effect can be brought to normal production), adverse effect can be caused to normal production. In summary, it is necessary to provide a hot runner mechanism capable of exhausting gas and monitoring temperature data in real time.

SUMMERY OF THE UTILITY MODEL

In order to overcome current hot runner because of the structure limit exists as the background drawback, the utility model provides a based on the hot runner body, under relevant mechanism combined action in using, can produce the vibration at the interval of every certain time, will get into this internal air escape of casing and hot runner, guaranteed the quality of follow-up pouring back product, and can in time indicate the staff to maintain when during operation operating temperature reduces unusually, guaranteed the hot runner mechanism that has exhaust mechanism that whole equipment normally worked.

The utility model provides a technical scheme that its technical problem adopted is:

a hot runner mechanism with an exhaust mechanism comprises a plurality of hot runner bodies, a stabilized voltage power supply and a vibration motor, and is characterized by also comprising a temperature detection circuit, a time control circuit and an exhaust mechanism; the temperature monitoring mechanism is matched with a temperature switch, the temperature switch is arranged at the outer side end of the shell, and the temperature detection circuit, the time control circuit and the voltage stabilizing power supply are arranged in the electric cabinet; the vibration motor is arranged outside the shell, and the exhaust mechanism is arranged on the shell; the power output end of the voltage-stabilizing power supply is electrically connected with the power input ends of the time control circuit and the temperature detection circuit, the two wiring ends of the temperature switch are electrically connected in series between the two signal input ends of the temperature detection circuit, and the power output end of the time control circuit is electrically connected with the power input end of the vibration motor.

Furthermore, the exhaust mechanism is provided with a plug, and the plug is arranged on the exhaust mechanism.

Furthermore, the time control circuit comprises a time control switch and a relay which are electrically connected, and the power output end of the time control switch is electrically connected with the two input ends of the power supply of the relay respectively.

Furthermore, the temperature detection circuit comprises a resistor, NPN triodes and a buzzer which are electrically connected, one end of the first resistor is connected with the positive power input end of the buzzer, the other end of the second resistor is connected with the base electrode of the first NPN triode, the collector electrode of the first NPN triode is connected with the other end of the first resistor and the base electrode of the second NPN triode, the emitting electrodes of the two NPN triodes are connected, and the collector electrode of the second NPN triode is connected with the negative power input end of the buzzer.

The utility model discloses beneficial effect is: this is novel based on hot runner body, causes the temperature reduction back because of various reasons in the casing in using, and temperature detect circuit's bee calling organ can in time sound production suggestion staff inspect concrete reason, has guaranteed the normal clear of production progress. The time control circuit can control the vibration motor to work at intervals of a certain time, so that air entering the shell and the like is discharged outwards from the fluid raw material in the shell through the exhaust mechanism, the probability of holes in subsequent finished products is reduced, and the quality of the products after subsequent pouring is ensured. Based on the above, so this novel application prospect that has.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a circuit diagram of the present invention.

Detailed Description

As shown in figures 1 and 2, a hot runner mechanism with an exhaust mechanism comprises a plurality of hot runner bodies 1 (an electric heating mechanism 2 is arranged between an outer layer and an inner layer on the outer side), a voltage-stabilized power supply A1 and a vibrating motor M (power is 500W and voltage is 220V), the plurality of hot runner bodies are matched with a shell 3, a feed pipe 4 and an electric driving mechanism 5, a set of valve rod driven by the electric driving mechanism 5 is vertically arranged in each hot runner body 1 (the electric driving mechanism 5 is positioned outside the upper end of the shell, the upper end of the valve rod is welded with a movable rod at the lower end of the electric driving mechanism, the valve rod enters the hot runner body 1 through the upper end of the hot runner body 1), a worker controls the electric driving the valve rod to move downwards through a power switch to close the inner lower end of a hot runner nozzle 6 and close fluid raw materials entering a mold (the upper end of the nozzle 6 is arranged at the lower end of the hot runner body and a fluid hole is arranged in the middle part at the lower part), or the lower end of the nozzle of the hot runner body is opened to control fluid to enter the mold (the solidified raw material remained in the hot runner and the like can be melted by applying the electric heating mechanism next time, so that the next time of normal injection molding in the mold is ensured), the upper parts of a plurality of hot runner bodies 1 are respectively arranged at the outer lower end of the shell 3, the upper ends of a plurality of hot runner bodies 1 are connected with the hollow shell 3 in parallel, the lower end of the feeding pipe 4 is arranged outside the upper end of the shell 3 and communicated with the shell, the upper ends of the feeding pipe 4 are connected with the discharging pipe of the heating and melting equipment together, and the lower ends of the nozzles 6 of the plurality of hot runner bodies are positioned at the inner upper parts of the raw material inlets of the plurality of molds; the device also comprises a temperature detection circuit 7, a time control circuit 8 and an exhaust mechanism 9; the temperature monitoring mechanism is matched with a temperature switch RT, the temperature switch RT is arranged at the right side end outside the shell 3 through a screw nut, a fixing clamp and the like, the temperature detection circuit 7, the time control circuit 8 and the voltage stabilizing power supply A1 are arranged in the electric cabinet 10, and the electric cabinet 10 is arranged on the wall surface of a production area; the two sets of vibration motors M are respectively arranged in the middle parts outside the front end and the rear end of the shell 3 through screw nuts, the exhaust mechanism 9 is a hollow pipeline, the middle parts of two sides of the upper end of the shell 3 are respectively provided with an opening communicated with the inside of the shell 3, and the lower ends of the two exhaust mechanisms 9 are respectively welded on the two openings.

As shown in FIGS. 1 and 2, the regulated power supply A1 is a finished product of a 220V/12V/1KW AC-to-DC 12V switching power supply module. Each exhaust mechanism 9 is provided with a plug 91 (when not in production, the plug is screwed in to prevent external dust and the like from entering the shell), the inner upper end of the exhaust mechanism 9 is provided with internal threads, and the plug 91 is screwed in the internal threads through the external threads and is arranged in the exhaust mechanism 9. The time control circuit comprises a time control switch A2 and a relay K1, and the power output end 3 and the pin 4 of the time control switch A2 are connected with the power input ends of the relay K1 through wires respectively. The temperature detection circuit comprises resistors R and R1, NPN triodes Q1 and Q2 and a buzzer B which are connected through circuit board wiring, one end of a first resistor R is connected with the positive power input end of the buzzer B, one end of a second resistor R1 is connected with the base of the first NPN triode Q1, the collector of the first NPN triode Q1 is connected with the other end of the first resistor R and the base of the second NPN triode Q2, the emitting electrodes of the two NPN triodes Q1 and Q2 are connected, and the collector of the second NPN triode Q2 is connected with the negative power input end of the buzzer B.

As shown in fig. 1 and 2,

power input ends

1 and 2 of a regulated power supply A1, two control power input ends of a relay K1 of a time control circuit and two poles of an alternating current 220V power supply are respectively connected through a wire,

power output ends

3 and 4 of the regulated power supply A1 and 4 of the time control circuit and power input ends of the time control circuit are respectively connected with

pins

1 and 2 of the time control switch A2, one end of a power input end resistor R of a temperature detection circuit and an emitting electrode of an NPN triode Q2 are respectively connected through a wire, two terminals of a temperature switch RT are connected in series between one end of two signal input ends resistor R of the temperature detection circuit and the other end of the resistor R1 through wires, and two normally open contact ends of a power output end relay K1 of the time control circuit and two ends of a power input end of a vibration motor M are respectively connected through wires.

Fig. 1 and 2 show that the novel hot runner body 1 is based on, the using method of the novel hot runner body 1 is completely consistent with that of the existing hot runner, when in use, fluid raw materials flowing out of a heating and melting device (such as a screw extruder) enter a plurality of hot runner bodies 1 through a shell 3 and a feed pipe 4, then enter a plurality of casting molds through a plurality of gates of the molds through nozzles 6 at the lower ends of the plurality of hot runner bodies 1, and the plurality of hot runner bodies 1 ensure that raw material fluid output by the heating and melting device in the previous process is kept in a molten state before entering the molds through a mold plastic raw material inlet (gate) by a method of an electric heating mechanism 2 (the electric heating mechanism heats the fluid flowing through the inside after being electrified), so that the fluid raw materials entering the molds are uniformly dispersed, and a powerful technical support is provided for ensuring the quality of the cast plastic products; under the actual condition, if the staff drives the fluid raw material that gets into in the mould with lower extreme closure, closing in the hot runner body 1 when valve rod downstream through power switch control electricity drive mechanism 5 in addition, if the lower extreme of no longer closing in the hot runner body 1 when electricity drive mechanism 5 control valve rod upstream, fluid raw material gets into in the mould through the nozzle. After the main power switch S1 is turned on, and a 220V power supply enters the power input end of the stabilized voltage supply A1,

pins

3 and 4 of the stabilized voltage supply A1 can output a stable direct current 12V power supply to enter the temperature detection circuit and the power input end of the time control circuit. After the time control circuit works by electrifying, 3 and 4 pins of the time control switch A2 can output power sources with a certain time at intervals (for example, 10 seconds Zhong Dianyuan are output every 1 minute) to enter the power input end of the relay K1, and then the relay K1 is electrified every 1 minute to be attracted for 10 seconds, and the control power source input end and the normally open contact end are closed. In the time of the relay K1 being electrified and attracted, the vibration motor M is electrified to work, so that air entering the shell 3 and the like is discharged outwards from the fluid raw material in the shell through the exhaust mechanism 9, the probability of holes in subsequent finished products is reduced, and the quality of the products after subsequent pouring is ensured (the vibration motor is controlled to be electrified at intervals to work in a mode of overcoming the relative energy consumption defect caused by continuous work of the vibration motor, and the air in the shell and the like can be discharged after vibrating for 10 seconds at intervals). After the temperature detection circuit works when power is supplied, when the temperature of the shell is proper (for example, higher than 200 ℃, namely when the whole device works normally), the internal contact of the temperature switch RT is closed, so that a 12V power supply can be subjected to voltage reduction and current limiting through the resistor R1 and enters the base electrode of the NPN triode Q1, the NPN triode Q1 is conducted with the collector electrode to output low level and enters the base electrode of the NPN triode Q2, the NPN triode Q2 is cut off, and then the buzzer B does not sound. When the temperature of the shell is not proper (for example, the temperature is lower than 200 ℃, namely the whole equipment works abnormally), the internal contact of the temperature switch RT is opened, so that a 12V power supply does not enter the base electrode of the NPN triode Q1 through voltage reduction and current limitation of the resistor R any more, the base electrode of the NPN triode Q2 obtains proper forward bias voltage through voltage reduction and current limitation of the resistor R, the collector electrode of the NPN triode Q2 is conducted to output low level to enter the negative power supply input end of the buzzer B, and the buzzer B is electrified to give a loud prompt sound to prompt a worker to check specific reasons, so that the normal operation of the production progress is ensured. In fig. 2, the temperature switch RT is a snap-action normally open contact type temperature switch (200 ℃) of type KSD 301; the relay K1 is a DC12V relay; the resistance values of the resistors R1 and R are respectively 10K and 47K; the model of the NPN triode Q1 and Q2 is 9013; the buzzer B is an active continuous sound buzzer alarm finished product with the model SF 12V; the time control switch A2 is a finished product of a full-automatic microcomputer time control switch with model KG316T, the microcomputer time control switch comprises seven keys of canceling/recovering, time correcting, week correcting, automatic/manual, timing and clock, and is provided with two

power input ends

1 and 2 pins and two power output ends 3 and 4 pins, a user respectively presses and operates the seven keys, and the interval time of the two power output ends for outputting power and the time of outputting power each time can be set.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, the embodiments do not include only one independent technical solution, and such description is only for clarity, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hot runner mechanism with an exhaust mechanism comprises a plurality of hot runner bodies, a stabilized voltage power supply and a vibration motor, and is characterized by also comprising a temperature detection circuit, a time control circuit and an exhaust mechanism; the temperature monitoring mechanism is matched with a temperature switch, the temperature switch is arranged at the outer side end of the shell, and the temperature detection circuit, the time control circuit and the voltage stabilizing power supply are arranged in the electric cabinet; the vibration motor is arranged outside the shell, and the exhaust mechanism is arranged on the shell; the power output end of the voltage-stabilizing power supply is electrically connected with the power input ends of the time control circuit and the temperature detection circuit, the two wiring ends of the temperature switch are electrically connected in series between the two signal input ends of the temperature detection circuit, and the power output end of the time control circuit is electrically connected with the power input end of the vibration motor.

2. The hot-runner mechanism with an exhaust mechanism as claimed in claim 1, wherein the exhaust mechanism is provided with a plug, and the plug is mounted on the exhaust mechanism.

3. The hot-runner mechanism with an exhaust mechanism according to claim 1, wherein the time control circuit comprises a time control switch and a relay electrically connected, and a power output terminal of the time control switch and a power input terminal of the relay are electrically connected.

4. The hot-runner mechanism with an exhaust mechanism according to claim 1, wherein the temperature detection circuit comprises a resistor, an NPN transistor and a buzzer, the resistor, the NPN transistor and the buzzer are electrically connected, one end of the first resistor is connected to the positive power input terminal of the buzzer, the other end of the second resistor is connected to the base of the first NPN transistor, the collector of the first NPN transistor is connected to the other end of the first resistor and the base of the second NPN transistor, the emitters of the two NPN transistors are connected, and the collector of the second NPN transistor is connected to the negative power input terminal of the buzzer.