CN207449079U - A kind of heating unit of three layer insulation wire extruder - Google Patents

Abstract

The utility model discloses a kind of heating units of three layer insulation wire extruder, it is intended to solve the problems, such as to exist during plastic extrusion melt it is non-uniform, its key points of the technical solution are that：Three sections of heating collars of machine barrel lateral wall are sheathed on including axially spaced-apart, three sections of heating collars include squeezing out heating collar, melting heating collar and insulation heating ring.A kind of heating unit of three layer insulation wire extruder of the utility model has the advantages that molten homogeneous plastics.

Description

A kind of heating unit of three layer insulation wire extruder

Technical field

The utility model is related to a kind of three layer insulation wire extruder, more specifically, it relates to which a kind of three layer insulation wire squeezes Go out the heating unit of machine.

Background technology

Three layer insulation wire extruder is for producing the equipment of three layer insulation wire, and three layer insulation wire extruder is by screw rod The pressure and shearing force generated is rotated, material can be allowd fully to be plasticized and uniformly mixed, the connection of extruder end There is head, the shell of head is usually to be secured to bolt on fuselage, and the mould inside head contains mold core seat, Ran Houyong Nut is fixed in the inlet wire port of head, and the inside of mold core seat is also equipped with mold core, and the center of mold core and mold core seat is all There is hole, act on passing through cored wire.

The blanking tube fed inside oriented extruder is usually set on the body of extruder, and blanking tube is connected with for screw rod The machine barrel of rotation is provided with the heating unit of heating machine barrel on machine barrel, by the plastic grain in heating devices heat machine barrel, Melt the plastic grain in machine barrel, at the same by Screw Extrusion to head at, but during plastic extrusion exist melting Non-uniform problem.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of three layer insulation wire extruders Heating unit has the advantages that molten homogeneous plastics.

The above-mentioned technical purpose of the utility model technical scheme is that：A kind of three layer insulation wire squeezes Go out the heating unit of machine, three sections of heating collars of machine barrel lateral wall are sheathed on including axially spaced-apart, three sections of heating collars include squeezing Go out heating collar, melting heating collar and insulation heating ring.

By using above-mentioned technical proposal, axially spaced-apart be arranged at three sections of heating collars on machine barrel to the plastics in machine barrel into Row heating, extrusion heating collar carry out plastics heating and screw rod are facilitated to extrude the plastic at the machine barrel of melting heating collar, lead to It crosses plastics in melting heating collar further to be melted, the plastics after thawing are again by screw extruding to insulation heating ring, making Plastics thoroughly uniformly melt, and the heating collar of the multistage heating molten plastic of setting makes the plastics in machine barrel gradually uniformly melt Melt, and facilitate the extrusion of plastics.

The utility model is further arranged to：The heating for squeezing out heating collar, melting heating collar and insulation heating ring Temperature is respectively 230 degrees Celsius, 260 degrees Celsius, 280 degrees Celsius.

By using above-mentioned technical proposal, the heating temperature for squeezing out heating collar, melting heating collar and insulation heating ring is divided Wei not be 230 degrees Celsius, 260 degrees Celsius, 280 degrees Celsius, the temperature of heating collar is gradually stepped up, the plastics for making to be located in machine barrel are from soft Change to gradual melting, make the thorough molten homogeneous of plastics.

The utility model is further arranged to：The heating collar axially offers the mounting hole of strip, the mounting hole Both sides side wall on be provided with fixed block close to each other, the fixed block is bolted.

By using above-mentioned technical proposal, heating collar is set on body, by bolt by two fixations close to each other Block is fixed, make heating collar holding be fixed on machine barrel, make heating collar stablize to barrel heat.

The utility model is further arranged to：Thermometric bar is provided on the machine barrel.

By using above-mentioned technical proposal, the thermometric bar that is set on machine barrel can be measured accurately by thermoprobe Whether the temperature in machine barrel reaches preset temperature value, it is ensured that the temperature in machine barrel is consistent with the temperature that heating collar is heated.

The utility model is further arranged to：Temperature sensor, the temperature sensor electricity are connected on the thermometric bar Property is connected with alert circuit, and the alert circuit is electrically connected with buzzer.

By using above-mentioned technical proposal, the temperature in the temperature sensor that is set on thermometric bar detection machine barrel, when due to Heating collar damages or voltage instability timing, when causing the heating temperature to decline, makes buzzer sounding reminding by alert circuit.

The utility model is further arranged to：The thermo-sensitive resistor TR of the temperature sensor is in series with first resistor R1 and opens Close button SB；The alert circuit includes the normally opened of comparator B, not circuit T, triode Q, relay KM1 and relay Contact switch KM1, the input terminal of the comparator B are electrically connected between first resistor R1 and thermo-sensitive resistor TR, the comparison Device B is electrically connected with a reference value, the comparator B NAND gate circuits T series connection；The base stage of the triode Q is electrically connected at non- The collector of gate circuit T, the triode Q are electrically connected at power supply, and the emitter and relay KM1 of the triode Q is electrical Connection, the normally opened contact switch KM1 of the relay is in parallel with relay KM1 after connect with buzzer, a reference value and in advance If the temperature value of heating be adapted.

By using above-mentioned technical proposal, when the temperature in machine barrel reduces, the thermo-sensitive resistor TR in temperature sensor increases Greatly, when the voltage value of the input of comparator B is less than a reference value, comparator B output low levels export high electricity by not circuit T It is flat, turn on triode Q, and then it is electric to obtain relay KM1, is closed the normally opened contact switch KM1 of relay, and then makes buzzing Device alarm temperature is less than preset value.

The utility model is further arranged to：Shielded box is covered on the outside of the heating collar.

By using above-mentioned technical proposal, shielded box has certain heat insulation effect, and prevents staff touches from adding Gas ket causes the situation of scald.

The utility model is further arranged to：Cover board is hinged on the shielded box, the cover board is fixed on by hasp Shielded box.

By using above-mentioned technical proposal, hinged cover board on shielded box facilitates staff to be opened by hasp and carries out Thermometric.

The utility model is further arranged to：Handle is provided on the cover board.

By using above-mentioned technical proposal, the handle that is set on cover board facilitates the opening of cover board.

In conclusion the utility model has the advantages that：Axially spaced-apart is arranged at three sections of heating collars on machine barrel Plastics in machine barrel are heated, squeeze out heating collar to plastics carry out heating facilitate screw rod extrude the plastic into positioned at melting plus At the machine barrel of gas ket, further melted by melting plastics in heating collar, the plastics after thawing are arrived again by screw extruding In insulation heating ring, plastics is made thoroughly uniformly to melt, the heating collar of the multistage heating molten plastic of setting makes the modeling in machine barrel Material gradually uniform melting, and facilitate the extrusion of plastics.

Description of the drawings

Fig. 1 is the overall structure diagram after the barrel section of the present embodiment is splitted；

Fig. 2 is the structure diagram of heating unit in the present embodiment；

Fig. 3 is the circuit diagram of the alert circuit in the present embodiment.

In figure：1st, body；11st, machine barrel；12nd, screw rod；13rd, motor；14th, blanking tube；2nd, head；21st, metering hole；22nd, add Heat block；3rd, heating collar；31st, heating collar is squeezed out；32nd, heating collar is melted；33rd, insulation heating ring；4th, mounting hole；5th, fixed block；6、 Thermometric bar；7th, shielded box；71st, cover board；72nd, handle；8th, temperature sensor；9th, alert circuit；10th, buzzer.

Specific embodiment

With reference to the accompanying drawings and examples, the utility model is described in detail.

A kind of heating unit of three layer insulation wire extruder, as shown in Figure 1, being horizontally disposed with including body 1, on body 1 has Machine barrel 11, the interior rotation connection of machine barrel 11 are useful for the screw rod 12 of conveying plastics, and 1 lower section of body is provided with the driving rotation of screw rod 12 Motor 13 is connected with blanking tube 14 on machine barrel 11, is connected with head 2 on the machine barrel 11 of 14 opposite side of blanking tube, on head 2 It is provided with and passes through the metering hole 21 that plastics is made to be attached on copper wire for copper wire, and head 2 is additionally provided with heat block 22.

As shown in Fig. 2, three sections of heating collars 3 that 11 lateral wall axially spaced-apart of machine barrel is sheathed on, three sections of heating collars 3 include squeezing out Heating collar 31, melting heating collar 32 and insulation heating ring 33, extrusion heating collar 31 carry out plastics heating and facilitate screw rod 12 will Plastics are pressed into place at the machine barrel 11 of melting heating collar 32, are further melted, melted by melting plastics in heating collar 32 Plastics after change are expressed to by screw rod 12 in insulation heating ring 33 again, and plastics is made thoroughly uniformly to melt, and the multistage of setting adds The heating collar 3 of heat fusing plastics, makes the plastics in machine barrel 11 gradually uniformly melt, and facilitates the extrusion of plastics.

The heating temperature for squeezing out heating collar 31, melting heating collar 32 and insulation heating ring 33 is respectively 230 degrees Celsius, 260 degrees Celsius, 280 degrees Celsius.The temperature of heating collar 3 is gradually stepped up, makes the plastics being located in machine barrel 11 gradual from softening to Melting, makes the thorough molten homogeneous of plastics.

The axial mounting hole 4 for offering the strip being conveniently set on machine barrel 11 of heating collar 3, the both sides side of mounting hole 4 Fixed block 5 close to each other is provided on wall, fixed block 5 is bolted.Thermometric bar 6, machine barrel 11 are provided on machine barrel 11 Whether the thermometric bar 6 of upper setting, the temperature that can be accurately measured by thermoprobe in machine barrel 11 reach preset temperature value, Ensure that the temperature in machine barrel 11 is consistent with the temperature that heating collar 3 is heated.

3 outside of heating collar is covered with shielded box 7, cover board 71 is hinged on shielded box 7, cover board 71 is fixed on isolation by hasp Case 7, and handle 72 is provided on cover board 71, shielded box 7 has certain heat insulation effect, and prevents staff from touching heating Circle 3 causes the situation of scald.

As shown in Figures 2 and 3, temperature sensor 8 is connected on thermometric bar 6, temperature sensor 8 is electrically connected with prompting electricity Road 9, alert circuit 9 are electrically connected with buzzer 10.The thermo-sensitive resistor TR of temperature sensor 8 is in series with first resistor R1 and switch Button SB；The normally opened contact that alert circuit 9 includes comparator B, not circuit T, triode Q, relay KM1 and relay is opened KM1 is closed, the input terminal of comparator B is electrically connected between first resistor R1 and thermo-sensitive resistor TR, and comparator B is electrically connected with base Quasi- value, comparator B NAND gate circuits T series connection；The base stage of triode Q is electrically connected at not circuit T, the collector of triode Q Power supply is electrically connected at, emitter and the relay KM1 of triode Q are electrically connected, the normally opened contact switch KM1 of relay and bee The device 10 that rings is in parallel with relay KM1 after connecting, and a reference value is adapted with the temperature value of default heating.

When the temperature in machine barrel 11 reduces, the thermo-sensitive resistor TR increases in temperature sensor 8, the input of comparator B When voltage value is less than a reference value, comparator B output low levels export high level by not circuit T, turn on triode Q, into And it is electric to obtain relay KM1, is closed the normally opened contact switch KM1 of relay, and then make 10 alarm temperature of buzzer low In preset value.

The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to Above-described embodiment, all technical solutions belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to Go out, for those skilled in the art, several improvement under the premise of the utility model principle is not departed from and Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.

Claims (9)

1. a kind of heating unit of three layer insulation wire extruder, it is characterised in that：Machine barrel (11) is sheathed on including axially spaced-apart outside Three sections of heating collars (3) of side wall, three sections of heating collars (3) include squeezing out heating collar (31), melting heating collar (32) and protect Warm heating collar (33).

2. a kind of heating unit of three layer insulation wire extruder according to claim 1, it is characterised in that：Described squeeze out adds The heating temperature of gas ket (31), melting heating collar (32) and insulation heating ring (33) is respectively 230 degrees Celsius, 260 degrees Celsius, 280 degrees Celsius.

3. a kind of heating unit of three layer insulation wire extruder according to claim 1, it is characterised in that：The heating collar (3) mounting hole (4) of strip is axially offered, fixation close to each other is provided on the both sides side wall of the mounting hole (4) Block (5), the fixed block (5) are bolted.

4. a kind of heating unit of three layer insulation wire extruder according to claim 1, it is characterised in that：The machine barrel (11) thermometric bar (6) is provided on.

5. a kind of heating unit of three layer insulation wire extruder according to claim 4, it is characterised in that：The thermometric bar (6) temperature sensor (8) is connected on, the temperature sensor (8) is electrically connected with alert circuit (9), the alert circuit (9) it is electrically connected with buzzer (10).

6. a kind of heating unit of three layer insulation wire extruder according to claim 5, it is characterised in that：The temperature passes The thermo-sensitive resistor of sensor (8)（TR）It is in series with first resistor（R1）And switch button（SB）；The alert circuit (9) includes comparing Device（B）, not circuit（T）, triode（Q）, relay（KM1）And the normally opened contact switch of relay（KM1）, the comparison Device（B）Input terminal be electrically connected at first resistor（R1）And thermo-sensitive resistor（TR）Between, the comparator（B）It is electrically connected with A reference value, the comparator（B）NAND gate circuit（T）Series connection；The triode（Q）Base stage be electrically connected at not circuit （T）, the triode（Q）Collector be electrically connected at power supply, the triode（Q）Emitter and relay（KM1）Electricity Property connection, the normally opened contact switch of the relay（KM1）After connecting with buzzer (10) with relay（KM1）Parallel connection, it is described A reference value is adapted with the temperature value of default heating.

7. a kind of heating unit of three layer insulation wire extruder according to claim 1, it is characterised in that：The heating collar (3) outside is covered with shielded box (7).

8. a kind of heating unit of three layer insulation wire extruder according to claim 7, it is characterised in that：The shielded box (7) cover board (71) is hinged on, the cover board (71) is fixed on shielded box (7) by hasp.

9. a kind of heating unit of three layer insulation wire extruder according to claim 8, it is characterised in that：The cover board (71) handle (72) is provided on.