CN211566899U - Feeding cylinder heating system of mould pressing cap maker - Google Patents

Abstract

The utility model discloses a mould pressing system lid machine feeding section of thick bamboo heating system, its technical scheme main points are: including the frame, set up the extruded tube in the frame, throw the feed bin, extrude the head, the one end of extruded tube links to each other with throwing the feed bin, and the other end of extruded tube links to each other with extruding the head, still includes a plurality of temperature regulation mechanism who sets up along extruded tube length direction, and temperature regulation mechanism is including fixing the thermal-insulated shell on the extruded tube lateral wall, being in the heater in the thermal-insulated shell, and the thermal-insulated shell all is in and extrudes between head and the feed bin. The extrusion molding pipe is divided into a plurality of sections by the plurality of temperature adjusting mechanisms, the plasticizing temperatures of the extrusion molding pipe in different sections are controlled by the corresponding temperature adjusting mechanisms, and when the heater of the temperature adjusting mechanism close to the extrusion head stops working for reducing the temperature of the plastic in the section, the heater close to the feeding bin can still continue to heat the plastic in the corresponding section, so that the temperature in each section can be maintained in a fixed plasticizing temperature range.

Description

Feeding cylinder heating system of mould pressing cap maker

Technical Field

The utility model relates to a plastics processing production facility, in particular to mould pressing system lid machine feeding section of thick bamboo heating system.

Background

Temperature is an effective means of transitioning the plastic from a solid state to a viscous flow state. In practice, the plasticizing temperature of plastics is often a range of values, which tend to scorch and age plastics when the temperature exceeds a specified maximum plasticizing temperature; when the temperature is lower than the minimum plasticizing temperature, the plastication of the plastics is poor, and the plastics cannot be fully fused. Therefore, the yield of the processed plastic is guaranteed only by controlling the temperature within a predetermined plasticizing temperature range.

At present, chinese patent No. CN204076775U discloses a polystyrene extruding machine, which comprises an extruding pipe, a screw, an extruding head, a feeding bin, a heat supply device and a fluid pressure balancing device; one end of the extrusion pipe is provided with a motor, and the other end of the extrusion pipe is connected with a fluid pressure balancing device; a feeding port is formed at one end of the plastic extrusion pipe close to the motor and is connected with a feeding bin through the feeding port; one end of the screw is connected with the motor and is arranged in the extrusion molding pipe; the heat supply device is arranged on the outer surface of the extruded pipe; the heat supply device is an annular heating pipe; the annular heating pipe is wound at the joint of the extrusion pipe and the fluid pressure balancing device from the feeding port; a metal pipeline is arranged in the annular heating pipe, and a vortex coil is arranged along the metal pipeline; the eddy current coil is wrapped by an insulating heat-insulating pipe.

The above prior art solutions have the following drawbacks: annular heating pipe twines the junction of extrusion molding pipe and fluid pressure balancing unit from the dog-house always, and the plastics in the extrusion molding pipe absorb the heat from the in-process that the dog-house removed to the extrusion head under screw drive always, and plastics temperature exceedes the plastify temperature very easily when being close to the extrusion head, and if want the cooling, whole annular heating pipe all will stop work for be in the extrusion molding pipe and be close to the unable fine melting of plastics in the dog-house one end, influence the removal of plastics in the extrusion molding pipe.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a mould pressing system lid machine feeding section of thick bamboo heating system, its advantage that has nimble plastify temperature of adjusting.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a mould pressing system lid machine feeding section of thick bamboo heating system, includes the frame, sets up the extruded pipe in the frame, throws the feed bin, extrudes the head, and the one end of extruded pipe links to each other with throwing the feed bin, and the other end of extruded pipe links to each other with extruding the head, still includes a plurality of temperature regulation mechanism along extruded pipe length direction evenly distributed, temperature regulation mechanism is including fixing the thermal-insulated shell on the outer lateral wall of extruded pipe, being in the heater in the thermal-insulated shell, the thermal-insulated shell all is in and extrudes the head and throw between the feed bin.

According to the technical scheme, the extrusion molding pipe is divided into the sections by the temperature adjusting mechanisms, the plasticizing temperatures of the extrusion molding pipe in different sections are controlled by the corresponding temperature adjusting mechanisms, and when the heater of the temperature adjusting mechanism close to the extrusion head stops working for reducing the temperature of the plastic in the section, the heater close to the feeding bin can still continuously work for heating the plastic in the corresponding section, so that the temperature in each section of the extrusion molding pipe can be maintained in a fixed plasticizing temperature range, and the yield of the extruded plastic is improved.

Preferably, the heater is a ring heating coil, and the ring heating coil is wound on the outer side wall of the extrusion molding pipe along the length direction of the extrusion molding pipe.

Through above-mentioned technical scheme, for whole extrusion molding pipe, single ring heating coil's length is not long, and the temperature difference of plastics in the extrusion molding pipe under the influence of same ring heating coil both ends is little, consequently under the prerequisite that does not influence the plastics temperature too much, makes ring heating coil along extrusion molding pipe length setting, can reduce temperature regulation mechanism's quantity, simplifies equipment fixing's step.

Preferably, the temperature adjusting mechanism further comprises a fan, the fan is communicated with the inner cavity of the heat insulation shell, and a ventilation opening communicated with the outside is formed in the side wall of the heat insulation shell.

Through the technical scheme, when the temperature in the section is too high, the corresponding fan is started, the cooling speed of the extrusion molding pipe in the section is accelerated through air cooling, the time required by temperature regulation is shortened, and the influence of the too high temperature on plastics is reduced.

Preferably, the fan in the same temperature adjusting mechanism and the ventilation opening on the heat insulation shell are respectively positioned at two sides of the heat insulation shell in the radial direction.

Through above-mentioned technical scheme, the vent is at a certain distance away from the fan, makes during fan during operation from the thermal-insulated shell exhaust hot-air be difficult to the quilt again inhale the thermal-insulated shell, improves air-cooled efficiency, reduces the work burden of fan.

Preferably, the number of the ventilation openings on the same heat insulation shell is two, the two ventilation openings are both arranged in the middle of the circumferential side wall of the heat insulation shell, the two ventilation openings are respectively communicated with the inner cavity of the heat insulation shell through two ventilation channels, and the end parts of the two ventilation channels far away from the corresponding ventilation openings respectively face the two ends of the heat insulation shell along the length direction of the heat insulation shell.

Through the technical scheme, the two ventilation channels respectively guide the air flowing direction entering the heat insulation shell, so that the air flows through the whole heat insulation shell as far as possible, the heat in the heat insulation shell can be taken out by the air, and the possibility of overhigh local temperature in the heat insulation shell is reduced.

Preferably, the temperature adjusting mechanism further comprises a temperature monitoring module, wherein the temperature monitoring module comprises a temperature detection circuit, a first comparison circuit, a first temperature reference circuit, a first control circuit and a first execution circuit;

the temperature detection circuit is used for detecting the temperature in the extrusion pipe and converting the temperature into a temperature detection signal, the first temperature reference circuit is used for providing a first temperature reference signal corresponding to the specified maximum plasticizing temperature, the first comparison circuit is coupled to the temperature detection circuit to receive the temperature detection signal and output a first comparison signal, the first control circuit is coupled to the first comparison circuit to receive the first comparison signal and output a corresponding first control signal, and the first execution circuit is coupled to the first control circuit to receive the first control signal and respond to the first control signal to control the on-off of the fan;

when the temperature detection signal is greater than the first temperature reference signal, the first comparison circuit outputs a high level signal and controls the first control circuit to output the high level signal, and the first execution circuit receives the high level signal and then controls the fan to start; otherwise, the first execution circuit controls the fan to be closed.

Through above-mentioned technical scheme, in case the intraductal high temperature of extrusion molding, fan automatic start dispels the heat through the forced air cooling, and after the temperature reduces, the automatic shutdown again of fan, the response of fan is timely, need not the workman and controls, reduces workman's work burden.

Preferably, the temperature adjusting mechanism further comprises a heating module, and the heating module comprises a second temperature reference circuit, a second comparison circuit, a second control circuit, a second execution circuit and a self-locking circuit;

the second temperature reference circuit is used for providing a second degree reference signal corresponding to a specified minimum plasticizing temperature, the second comparison circuit is coupled to the temperature detection circuit to receive the temperature detection signal and output a second comparison signal, the second control circuit is coupled to the second comparison circuit to receive the second comparison signal and output a corresponding second control signal, the second execution circuit is coupled to the second control circuit to receive the second control signal and respond to the second control signal to control the turn-off of the power supply loop of the annular heating coil, and the self-locking circuit is coupled to the second control circuit to receive the second control signal and respond to the second control signal to enable the power supply loop of the annular heating coil to maintain a conducting state;

when the temperature detection signal is smaller than the second temperature reference signal, the second comparison circuit outputs a high level signal and controls the second control circuit to output the high level signal, the second execution circuit receives the high level signal and then controls the power supply loop of the annular heating coil to be closed, and the self-locking circuit receives the high-point leveling signal and then enables the second comparison circuit to continuously output the high level signal.

Through above-mentioned technical scheme, in case the intraductal temperature of extrusion molding is crossed lowly, annular heating coil gets electricity and produces the heat to annular heating coil still can continue work after the temperature that makes the extrusion molding pipe surpass minimum plastify temperature through self-locking circuit, avoids annular heating coil to start repeatedly in the short time, the workman only need when the fan starts relieve self-locking circuit from the auto-lock can, in order to avoid the waste of electric power resource.

Preferably, the temperature monitoring module further includes an unlocking circuit, and the unlocking circuit is coupled to the first control circuit to receive the first control signal and controls the self-locking circuit to be turned off corresponding to the first control signal.

Through above-mentioned technical scheme, realize the automation of the temperature regulation and control of mould pressing system lid machine feeding cylinder, during the low temperature, annular heating coil is automatic to be electrified and continuously switches on, and after the temperature rose to surpass specified plastify temperature scope, annular heating coil auto-power-off and start-up fan cooled down make the temperature resume to in the specified plastify temperature scope.

To sum up, the utility model discloses the beneficial effect who contrasts in prior art does:

1. by dividing the extrusion pipe into a plurality of sections and providing a temperature adjustment mechanism for each section, interference between the sections is small and adjustment can be made according to the actual temperature within the sections;

2. the fan and the annular heating coil are arranged, so that the temperature can be quickly increased or decreased, and the temperature in the extrusion molding pipe in a responsible section can be conveniently adjusted;

3. through setting up temperature monitoring module and heating module, realize the automatic regulation of temperature, alleviate workman's work burden, it is more timely to the governing speed of temperature.

Drawings

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

FIG. 2 is a partial cross-sectional view of the embodiment;

FIG. 3 is a schematic circuit diagram between a heating module and a temperature monitoring module of an embodiment.

In the figure, 1, a frame; 2. extruding a plastic pipe; 3. a feeding bin; 4. an extrusion head; 5. a temperature adjustment mechanism; 51. a thermally insulated housing; 511. a bump; 512. a ventilation channel; 513. a vent; 52. a ring-shaped heating coil; 53. a fan; 54. a temperature monitoring module; 541. a temperature detection circuit; 542. a first comparison circuit; 543. a first temperature reference circuit; 544. a first control circuit; 545. a first execution circuit; 546. an unlock circuit; 55. a heating module; 551. a second temperature reference circuit; 552. a second comparison circuit; 553. a second control circuit; 554. a second execution circuit; 555. a self-locking circuit.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a mould pressing system lid machine feeding section of thick bamboo heating system, including frame 1, the pipe 2 is moulded to the extrusion of setting in frame 1, throw feed bin 3, extrude first 4, the one end of the pipe 2 of moulding with throw feed bin 3 and link to each other, the other end of the pipe 2 of moulding with extrude first 4 and link to each other, the pipe 2 department of moulding is extruded first 4 and is thrown the length direction of the pipe 2 of extruding on the circumference lateral wall between the feed bin 3 and evenly cut apart into a plurality of districts, all sets up temperature regulation mechanism 5 in every district. The temperature control means 5 on the extrusion tube 2 dynamically balances the temperature in the section of the extrusion tube 2 in such a way that the plastic temperature in the section of the extrusion tube 2 is in the specified plasticizing temperature range. The extrusion head 4 is also provided with a temperature regulating mechanism 5, and the temperature regulating mechanism 5 on the extrusion head 4 mainly counteracts heat dissipation through heating.

Referring to fig. 1 and 2, the temperature adjusting mechanism 5 includes a heat insulating housing 51 fixed to an outer side wall of the extruded tube 2, and a heater disposed in the heat insulating housing 51. The heater is a ring heating coil 52, and the ring heating coil 52 is wound on the outer side wall of the extrusion tube 2 along the length direction of the extrusion tube 2. A fan 53 is fixed on the outer side wall of one side of the heat insulation shell 51, and the fan 53 is communicated with the inner cavity of the heat insulation shell 51. The side wall of the heat insulating housing 51 away from the fan 53 is provided with a projection 511, and the projection 511 is located at a middle position of the circumferential side wall of the heat insulating housing 51. Two ventilation channels 512 are opened in the protrusion 511, one ends of the two ventilation channels 512 are communicated with the inner cavity of the heat insulation shell 51, and the other ends of the ventilation channels 512 are provided with ventilation openings 513 communicated with the outside on the side wall of the heat insulation shell 51. And the ends of the two ventilation channels 512 communicating with the inner cavity of the heat insulation shell 51 are respectively directed to the two ends of the heat insulation shell 51 along the length direction of the heat insulation shell 51.

Referring to fig. 3, the temperature adjustment mechanism 5 further includes a temperature monitoring module 54 and a heating module 55.

The temperature monitoring module 54 includes a temperature detecting circuit 541, a first comparing circuit 542, a first temperature reference circuit 543, a first control circuit 544, a first execution circuit 545 and an unlocking circuit 546; the heating module 55 includes a second temperature reference circuit 551, a second comparison circuit 552, a second control circuit 553, a second execution circuit 554, and a self-locking circuit 555.

The temperature detection circuit 541 is configured to detect a temperature inside the extrusion tube 2, convert the temperature into a temperature detection signal, and provide the temperature detection signal to the first comparison circuit 542 and the second comparison circuit 552 at the same time, the second temperature reference circuit 551 is configured to provide a second temperature reference signal corresponding to a predetermined minimum plasticizing temperature, the second comparison circuit 552 is coupled to the temperature detection circuit 541 to receive the temperature detection signal and output the second comparison signal, the second control circuit 553 is coupled to the second comparison circuit 552 to receive the second comparison signal and output a corresponding second control signal, the second execution circuit 554 is coupled to the second control circuit 553 to receive the second control signal and control the turn-off of the power supply circuit of the annular heating coil 52 in response to the second control signal, and the self-locking circuit 555 is coupled to the second control circuit 553 to receive the second control signal and maintain the power supply circuit of the annular heating coil 52 in a turn-on state in response to the second control signal. The first temperature reference circuit 543 is configured to provide a first temperature reference signal corresponding to a specified maximum plasticizing temperature, the first comparison circuit 542 is coupled to the temperature detection circuit 541 to receive the temperature detection signal and output a first comparison signal, the first control circuit 544 is coupled to the first comparison circuit 542 to receive the first comparison signal and output a corresponding first control signal, and the first execution circuit 545 is coupled to the first control circuit 544 to receive the first control signal and respond to the first control signal to control the on/off of the fan 53; the unlock circuit 546 is coupled to the first control circuit 544 to receive the first control signal and control the self-lock circuit 555 to turn off according to the first control signal.

Referring to fig. 3, the temperature detection circuit 541 includes a thermistor RT, which is a negative temperature coefficient thermistor, and a resistor R1.

One end of the thermistor RT is coupled to the power VCC, the other end of the thermistor RT is coupled to the resistor R1, and the other end of the resistor R1 is grounded.

When the thermistor RT is heated and the resistance becomes low, the voltage divided by the resistor R1 becomes high, and the temperature detection signal outputted from the connection point between the thermistor RT and the resistor R1 becomes a high level signal; otherwise, the temperature detection signal is a low level signal.

Referring to fig. 3, the first temperature reference circuit 543 includes a resistor R4, a resistor R2, and a resistor R3.

One end of the resistor R4 is coupled to the power source VCC, the other end of the resistor R4 is coupled to one end of the resistor R3, the other end of the resistor R3 is coupled to the first comparator 542, one end of the resistor R2 is coupled to a connection point between the resistor R4 and the resistor R3, and the other end of the resistor R2 is grounded.

The resistor R4 and the resistor R3 are connected in series to divide voltage, and the first temperature reference signal inputted to the first temperature comparator circuit is fixed by arranging the resistors R4 and R3 in a ratio such that the first temperature reference signal corresponds to a prescribed maximum plasticizing temperature.

Referring to fig. 3, the first comparison circuit 542 is a comparator N1. Comparator N1 is model LM 311.

The inverting input terminal of the comparator N1 is coupled to the connection point between the thermistor RT and the resistor R1, the inverting input terminal of the comparator N1 is coupled to the end of the resistor R3 away from the resistor R4, and the output terminal of the comparator N1 outputs a first comparison signal.

When the temperature detection signal is greater than the first temperature reference signal, the comparator N1 outputs a high level signal; when the temperature detection signal is less than the first temperature reference signal, the comparator N1 outputs a low level signal.

Referring to fig. 3, the first control circuit 544 is a transistor Q1, and the transistor Q1 is an NPN-type transistor.

The base of the transistor Q1 is coupled to the output terminal of the comparator N1, the collector of the transistor Q1 is coupled to the power source VCC through the first execution circuit 545 and the latch circuit 546, and the emitter of the transistor Q1 is grounded.

When the comparator N1 outputs a high level signal, the triode Q1 is conducted; conversely, transistor Q1 is off.

Referring to fig. 3, the first execution circuit 545 is an intermediate relay KM 1.

One end of the intermediate relay KM1 is coupled to the collector of the triode Q1, the other end of the intermediate relay KM1 is connected with a power supply VCC through an unlocking circuit 546, and a normally open contact KM1-1 of the intermediate relay KM1 is connected in series in a power supply loop of the fan 53.

When the intermediate relay KM1 is electrified, the normally open contact KM1-1 of the intermediate relay KM1 is closed; on the contrary, the normally open contact KM1-1 of the intermediate relay KM1 is opened.

Referring to fig. 3, the unlocking circuit 546 is an intermediate relay KM 2.

One end of the intermediate relay KM2 is coupled to a power source VCC, the other end of the intermediate relay KM2 is connected to the transistor Q1 through the first execution circuit 545, one end of the normally closed contact KM2-1 of the intermediate relay KM2 is coupled to the power source VCC, and the other end of the normally closed contact KM2-1 of the intermediate relay KM2 is connected to the second comparison circuit 552 through the resistor R8 and the normally open contact KM 4-1.

When the intermediate relay KM2 is electrified, the normally closed contact KM2-1 of the intermediate relay KM2 is closed; on the contrary, the normally closed contact KM2-1 of the intermediate relay KM2 was opened.

Referring to fig. 3, the second temperature reference circuit 551 includes a resistor R5, a resistor R6, and a resistor R7.

One end of the resistor R7 is coupled to the power VCC, the other end of the resistor R7 is coupled to one end of the resistor R6, the other end of the resistor R6 is coupled to the second comparator circuit 552, one end of the resistor R5 is coupled to a connection point between the resistor R6 and the resistor R7, and the other end of the resistor R5 is grounded.

The resistor R6 and the resistor R7 are serially divided, and the second temperature reference signal inputted to the second comparator circuit 552 is fixed by arranging the resistances of the resistor R6 and the resistor R7 in a ratio such that the second temperature reference signal corresponds to a prescribed minimum plasticizing temperature.

Referring to fig. 3, the second comparison circuit 552 is a comparator N2. Comparator N2 is model LM 311.

The inverting input terminal of the comparator N2 is coupled to the end of the resistor R6 away from the resistor R7, the inverting input terminal of the comparator N2 is coupled to the connection point between the thermistor RT and the resistor R1, and the output terminal of the comparator N2 outputs a second comparison signal.

When the temperature detection signal is less than the second temperature reference signal, the comparator N2 outputs a high level signal; when the temperature detection signal is greater than the first temperature reference signal, the comparator N2 outputs a low level signal.

Referring to fig. 3, the second control circuit 553 is a transistor Q2, and the transistor Q2 is an NPN-type transistor.

The base of the transistor Q2 is coupled to the output terminal of the comparator N2, the collector of the transistor Q2 is coupled to the power source VCC through the second execution circuit 554 and the self-locking circuit 555, and the emitter of the transistor Q2 is grounded.

When the comparator N2 outputs a high level signal, the triode Q2 is conducted; conversely, transistor Q2 is off.

Referring to fig. 3, the second actuating circuit 554 is an intermediate relay KM 3.

One end of the intermediate relay KM3 is coupled to a power supply VCC, the other end of the intermediate relay KM3 is connected with a triode Q2 through a self-locking circuit 555, and a normally open contact KM3-1 of the intermediate relay KM3 is connected in series in a power supply loop of the annular heating coil 52.

When the intermediate relay KM3 is electrified, the normally open contact KM3-1 of the intermediate relay KM3 is closed; on the contrary, the normally open contact KM3-1 of the intermediate relay KM3 is opened.

Referring to fig. 3, the self-locking circuit 555 is an intermediate relay KM 4.

One end of an intermediate relay KM4 is coupled to a collector of the triode Q2, the other end of the intermediate relay KM4 is connected with one end of the intermediate relay KM3 far away from a power supply VCC, one end of a normally open contact KM4-1 of the intermediate relay KM4 is connected with one end of a resistor R8 far away from a normally closed contact KM2-1 of the intermediate relay KM2, and the other end of the normally open contact KM4-1 of the intermediate relay KM4 is coupled to a base of the triode Q2.

When the intermediate relay KM4 is electrified, the normally open contact KM4-1 of the intermediate relay KM4 is closed; on the contrary, the normally open contact KM4-1 of the intermediate relay KM4 is opened.

The working principle is as follows: when the temperature control device is used, the temperature control mechanisms 5 are started firstly, the temperature in the extrusion pipe 2 is lower than the fixed minimum plasticizing temperature at the moment, the comparator N1 and the comparator N2 output low-level signals, and the triode Q1 is turned off, so that the intermediate relay KM1 and the intermediate relay KM2 are not powered; the triode Q2 is conducted, the intermediate relay KM3 works, and the normally open contact KM3-1 of the intermediate relay KM3 is closed, so that the annular heating coil 52 is electrified and heated; the intermediate relay KM4 works, the normally open contact KM4-1 of the intermediate relay KM4 is closed, so that the triode Q2 is directly connected with the power supply VCC through the resistor R8, and at the moment, the triode Q2 keeps a conducting state no matter what the output of the comparator N2 is. When the temperature in the extrusion pipe 2 exceeds a specified minimum plasticizing temperature, the plastic is introduced into the extrusion pipe 2 through the charging bin 3, and the temperature regulating mechanisms 5 automatically regulate the temperature in the respective sections.

When the temperature in the extrusion molding pipe 2 in the section continues to rise and exceeds the specified maximum plasticizing temperature, the comparator N1 outputs a high level signal, the triode Q1 is conducted, the intermediate relay KM1 is electrified, the corresponding fan 53 works, and the corresponding heat insulation shell 51 is cooled by air. Meanwhile, the intermediate relay KM2 is electrified, the normally closed contact KM2-1 of the intermediate relay KM2 is disconnected, the self-locking of the triode Q2 is released, the comparator N2 outputs a low-level signal at the moment, the triode Q2 is turned off, the intermediate relay KM3 does not work, and the corresponding annular heating coil 52 is not electrified any more. When the temperature in the extruded tube 2 in the zone is lower than the maximum plasticizing temperature, the blower 53 is turned off to naturally lower the temperature in the extruded tube 2 in the zone until the temperature in the extruded tube 2 in the zone is again lower than the specified minimum plasticizing temperature, the annular heating coil 52 is powered again and the above steps are repeated.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a mould pressing system lid machine feeding section of thick bamboo heating system, includes frame (1), sets up extruded pipe (2) in frame (1), throws feed bin (3), extrudes head (4), and the one end of extruded pipe (2) links to each other with throwing feed bin (3), and the other end of extruded pipe (2) links to each other with extruding head (4), characterized by: still include a plurality of temperature regulation mechanism (5) along extruded tube (2) length direction evenly distributed, temperature regulation mechanism (5) are including fixing the thermal-insulated outer, the heater that is in thermal-insulated shell (51) on extruded tube (2) lateral wall, thermal-insulated shell (51) all are in between extruding head (4) and throwing feed bin (3).

2. A mold cap maker feed cylinder heating system as claimed in claim 1, wherein: the heater is a ring-shaped heating coil (52), and the ring-shaped heating coil (52) is wound on the outer side wall of the extrusion molding pipe (2) along the length direction of the extrusion molding pipe (2).

3. A mold cap maker feed cylinder heating system as claimed in claim 2, wherein: the temperature adjusting mechanism (5) further comprises a fan (53), the fan (53) is communicated with an inner cavity of the heat insulation shell (51), and a ventilation opening (513) communicated with the outside is formed in the side wall of the heat insulation shell (51).

4. A mold cap maker feed cylinder heating system as claimed in claim 3, wherein: the fan (53) in the same temperature adjusting mechanism (5) and the ventilation opening (513) on the heat insulation shell (51) are respectively positioned on two sides of the heat insulation shell (51) in the radial direction.

5. A die-stamping lid maker feed cylinder heating system as claimed in claim 4, wherein: two ventilation openings (513) are arranged on the same heat insulation outer shell (51), the two ventilation openings (513) are located in the middle of the circumferential side wall of the heat insulation outer shell (51), the two ventilation openings (513) are communicated with an inner cavity of the heat insulation outer shell (51) through two ventilation channels (512), and the end parts, far away from the corresponding ventilation openings (513), of the two ventilation channels (512) face the two ends of the heat insulation outer shell (51) along the length direction of the heat insulation outer shell (51).

6. A mold cap maker feed cylinder heating system as claimed in claim 3, wherein: the temperature adjusting mechanism (5) further comprises a temperature monitoring module (54), wherein the temperature monitoring module (54) comprises a temperature detection circuit (541), a first comparison circuit (542), a first temperature reference circuit (543), a first control circuit (544) and a first execution circuit (545);

the temperature detection circuit (541) is used for detecting the temperature in the extrusion pipe (2) and converting the temperature into a temperature detection signal, the first temperature reference circuit (543) is used for providing a first temperature reference signal corresponding to a specified maximum plasticizing temperature, the first comparison circuit (542) is coupled to the temperature detection circuit (541) to receive the temperature detection signal and output a first comparison signal, the first control circuit (544) is coupled to the first comparison circuit (542) to receive the first comparison signal and output a corresponding first control signal, and the first execution circuit (545) is coupled to the first control circuit (544) to receive the first control signal and respond to the first control signal to control the on and off of the fan (53);

when the temperature detection signal is greater than the first temperature reference signal, the first comparison circuit (542) outputs a high-level signal and controls the first control circuit (544) to output the high-level signal, and the first execution circuit (545) receives the high-level signal and then controls the fan (53) to start; otherwise, the first execution circuit (545) controls the fan (53) to be closed.

7. A mold cap maker feed cylinder heating system as claimed in claim 6, wherein: the temperature adjusting mechanism (5) further comprises a heating module (55), wherein the heating module (55) comprises a second temperature reference circuit (551), a second comparison circuit (552), a second control circuit (553), a second execution circuit (554) and a self-locking circuit (555);

the second temperature reference circuit (551) is configured to provide a second degree reference signal corresponding to a specified minimum plasticizing temperature, the second comparison circuit (552) is coupled to the temperature detection circuit (541) to receive the temperature detection signal and output a second comparison signal, the second control circuit (553) is coupled to the second comparison circuit (552) to receive the second comparison signal and output a corresponding second control signal, the second execution circuit (554) is coupled to the second control circuit (553) to receive the second control signal and respond to the second control signal to control the turn-off of the power supply circuit of the ring heating coil (52), and the self-locking circuit (555) is coupled to the second control circuit (553) to receive the second control signal and respond to the second control signal to maintain the power supply circuit of the ring heating coil (52) in a turn-on state;

when the temperature detection signal is smaller than the second temperature reference signal, the second comparison circuit (552) outputs a high level signal and controls the second control circuit (553) to output a high level signal, the second execution circuit (554) receives the high level signal and then controls a power supply loop of the annular heating coil (52) to be closed, and the self-locking circuit (555) receives the high level signal and then enables the second comparison circuit (552) to continuously output the high level signal.

8. A mold cap maker feed cylinder heating system as claimed in claim 7, wherein: the temperature monitoring module (54) further includes an unlocking circuit (546), and the unlocking circuit (546) is coupled to the first control circuit (544) to receive the first control signal and controls the self-locking circuit (555) to be turned off in response to the first control signal.

Images