CN1265953C

CN1265953C - Portable minitype plastic extruding machine

Info

Publication number: CN1265953C
Application number: CN 200410008649
Authority: CN
Inventors: 何轶良
Original assignee: XINGHE IND CO Ltd HARBIN POLYTECHNICAL UNIV
Current assignee: XINGHE IND CO Ltd HARBIN POLYTECHNICAL UNIV
Priority date: 2004-03-16
Filing date: 2004-03-16
Publication date: 2006-07-26
Anticipated expiration: 2024-03-16
Also published as: CN1562608A

Abstract

The present invention relates to a portable minitype plastic extruding machine which comprises a power driving device, a machine base, a propeller shaft, a screw conveyer of the cloaking bars of the propeller shaft, a rotary cutter, a screw rod, a feed cylinder and a transition body, wherein the machine base is connected with the power driving device; the propeller shaft is connected with an output shaft of the power driving device by a short shaft in the machine base; the rotary cutter is arranged in an initial position of a feeding section of the screw rod, and rotates with the screw rod together; a homogenization section additionally provided with male pins is arranged on the end of the screw rod; the input end of the screw rod is connected with the other end of the propeller shaft; the front end of the feed cylinder is connected with a transition body and the back end is connected with the machine base; heating rings are arranged outside the feed cylinder; a machine head and the feed cylinder are connected together by the transition body; a thermocouple for temperature control is arranged on the transition body; the machine head can rotate 360 degrees.

Description

The portable minisize plastic extruder

Technical field

The present invention relates to plastic extruder, particularly a kind of portable minisize plastic extruder.

Background technology

Usually general plastic extruder is to be grouped into by motor, reductor, screw rod, barrel, heater and electric control part, screw diameter is between 20mm-200mm, and mostly be to be fixed on and process on the place and produce, the power supply of use is that what to be added in 380 volts the alternating current, hopper is granular raw material.But some situation need be carried out site operation, and this is incompetent for the existing plastic extruder as suitability for industrialized production equipment that those are fixed on the place.Therefore, need a kind of plastic extruder that can use at the construction field (site).

Summary of the invention

Purpose of the present invention is exactly to provide a kind of micro plastic extruder in light weight, easy to carry for site operation.

For achieving the above object, the principle that the present invention extrudes according to single screw rod has designed the portable minisize plastic extruder of a kind of structure and service condition uniqueness, it comprises: a Power Drive Unit, a support that is connected with Power Drive Unit, one is passed through the power transmission shaft that a minor axis is connected with the Power Drive Unit output shaft in support, power transmission shaft overcoating bar auger conveyor, a rotary-cut cutter and a screw rod, the rotary-cut cutter is installed in the section start of screw rod feeding section and together rotates with screw rod, there is the homogenizing zone that has installed pin additional the screw rod end, and the input of screw rod links to each other with the other end of power transmission shaft, a barrel, its front end connects the transition body, the rear end connects support, and heating collar is equipped with in the outside, and one with head and the barrel transition body that links together, installed on it and be used for temperature controlled thermocouple, head can 360 degree rotations.

Extruder of the present invention uses 220 volts of AC powers, and the raw material of use is the round plastic bar of 4mm-5mm.This machine can be changed different heads and be applicable to different purposes, and multiple tube capper head, bar shaped head and circular head are arranged.This machine uses 220 volts of AC powers, is specially adapted to not have use under the condition of 380 volts of electrical source of power.

Extruder of the present invention can be applied to the welding and the filling of plastic products under many specified conditions.For example behind the disconnected pipe of job site steel skeleton plastic clad pipe, steel wire is exposed must to wrap up steel wire with the plastics with material, in order to avoid medium is revealed and the corrosion steel wire, the plastics that at this moment available extruder of the present invention is extruded fusion carry out on-the-spot sealing operation.Extruder of the present invention also can carry out the work such as welding of plastic plate, sheet material at the construction field (site).

Structure of the present invention will be described in detail in conjunction with following accompanying drawing.

Description of drawings

Fig. 1 is the structure chart of portable minisize extruder

Fig. 2 is the rotating head cutaway view of portable minisize extruder

Fig. 3 is the cutaway view of the rotating head opposite side of portable minisize extruder

Fig. 4 is the vertical view of portable minisize extruder

Specific embodiment

Structure referring to Fig. 1,3 portable minisize extruders is made up of motor 12, auger conveyor 18, screw rod 4, barrel 3, heating collar 5, temp. controlling box 11, hot blast heater 10 and special-purpose head 1 as Power Drive Unit.

Head 1 is the special-purpose rotatable capper head that is configured on the micro plastic extruder.Transition body 2 links together head 1 and barrel 3, and has installed and be used for temperature controlled thermocouple 20.Barrel 3, screw rod 4 are that the plastics of this machine melt extrude parts, and by special steel 38CrMoAl processing and manufacturing, surface carburization is handled hardness and can be reached more than the HRC65.The diameter design of screw rod 4 is below 20mm, preferred 12-18mm, draw ratio is 18, and that screw rod 4 adopts is wide, the version and the homogenizing zone 4a in the screw rod end of gradual change, the stupefied disconnection of spiral shell have installed pin 27 additional, and such structure helps the fusion of plastics, homogenizing is extruded.The internal diameter of barrel 3 is than the big 0.8mm of external diameter of screw rod 4, and the barrel front end links to each other with transition body 2 with screw thread, and the rear end joins by flange and support 8 usefulness bolts, in barrel 3 outsides heating collar 5 is housed, and its heating power is 500W---1000W.Support 8 is fixing with metal ferrule 13 with the shell of drive motor 12.At an end of the output shaft of support 8 internal driving electric machines 12 and minor axis 9 with being threaded and fixing with limit screw 14, the other end of minor axis 9 links to each other with power transmission shaft 7 with key, thrust bearing 15 is housed on the power transmission shaft 7, the back active force of screw rod 4 can be applied on the support 8, the input of screw rod 4 is inserted in the endoporus of power transmission shaft 7 and will reverses transmission of power by driving key 19 and give screw rod 4.Screw 17 also is housed in the endoporus of power transmission shaft 7 is used for stretching screw 4, withdraw from when preventing screw rod 4 counter-rotatings.On power transmission shaft 7, also be with material bar auger conveyor 18, it is to be the special special feeding parts that are provided with of miniature extruder, profile is helical form and sharp cutting edge arranged, can be when power transmission shaft 7 rotates by key with its driven rotary, and auger conveyor 18 and support endoporus have the gap of 1mm.A material bar groove that 3mm is dark is arranged on support 8 inwalls, and its groove and support 8 outer charging apertures communicate, and plastics material bar adds from charging aperture, and are subjected to the mill sassafras thrust of feeding screw 18 rotations and travel forward in groove.A special rotary-cut cutter 6 is installed in the section start of screw rod feeding section.Rotary-cut cutter 6 can be along with screw rod together rotates, and the plastic grain that just is cut into certain-length when the material bar of carrying by auger conveyor 18 runs into rotary-cut cutter 6 is for melting the usefulness of extruding.Power drive motor 12 parts are selected 1KW following micromotor or electric hand drill for use, and it can rotate in break-in, for screw rod rotation extrusion plastic provides power, the material bar can be withdrawed from during counter-rotating when just changeing.Temp. controlling box 11 is arranged on power-actuated top, and interior dress temperature controller and curing relay can be used for the temperature control of screw rod 4, barrel 3.Be provided with storage heater 10 (Fig. 3) on the parallel position of screw rod 4, barrel 3, it has independent temperature control and starting switch, is used for the surperficial hot blast of welding object is heated to molten state, and hot blast adds hot-flow flue 28 and separates with the interior plastic of conduit of head.

Portable minisize plastic extruder operation principle is: at first connect the 220V AC power; Adjusting temp. controlling box 11 interior temperature controllers is heated to screw rod 4, barrel 3 200--260 ℃ of technological temperature of setting and is incubated half an hour; The plastic strip that then adds 4mm from the charging aperture of support 8; The switch that starts drive motors 12 makes driven by motor auger conveyor 18, rotary-cut cutter 6, screw rod 4 rotations.Plastic strip is delivered to rotary-cut cutter 6 places through auger conveyor 18 and is cut into plastic grain, continues to advance, plastifies, extrudes the plastics of fusion through screw rod 4 from head 1 again.When this machine of use carries out sealing operation to the steel skeleton plastic clad pipe broken end, hand-held this extruder level is held level with both hands, with special for sealing rotary seal head 1 (Fig. 2 of configuration, 3) operate, the stopper slot 29 of mouth mould 22 processing in the head 1 can be advanced along the multiple tube tube wall, storage heater 10 through port moulds are to the heating of the pipe end face before sealing, mouth mould 22 is fixed together with circular support body 25 and can rotates in 360 degree scopes by relative transition body 2, head 1 breaks away from transition body 2 usefulness screws 21 and carries out spacing when preventing to rotate, the molten plastic extruded like this is expressed into the multiple tube port and is fixed on 23 pairs of compound plastics pressurizations of polytetrafluoroethylene (PTFE) pressure roller on mouthful mould 22 by axle 24 through the mouth mould 22 of rotating head 1, make it to combine with the tube body plastics more firm, and extruder is held retinue level with both hands and is got final product.

Extruder of the present invention also can be joined sheet commonly used, bar extruder head 26 is used for plastics and fills.

The performance of portable minisize plastic extruder sees Table one

Table one

Model	Screw diameter mm	Screw slenderness ratio	Driving power w	Heating power w	Extrusion capacity kg/h	Weight kg
Model	Screw diameter mm	Screw slenderness ratio	Driving power w	Heating power w	Extrusion capacity kg/h	Weight kg	A
	13	18	800	500	2	6.8	A
	13	18	800	500	2	6.8	B	16	18	1000	600	3.5	8

Claims

1. portable minisize plastic extruder is characterized in that comprising:

A. Power Drive Unit, but it is electric hand drill or micromotor that the break-in of power below 1KW rotated;

B. support, it is fixedlyed connected with the shell of motor, and inboard wall of base has the material bar groove that communicates with the outer charging aperture of support, fixedlys connected with an end of a minor axis at the output shaft of support built-in motor;

C. power transmission shaft, the one end links to each other with the other end of described minor axis, and the other end links to each other with the input of screw rod, power transmission shaft overcoating bar auger conveyor, auger conveyor and support endoporus have the gap of 1mm;

D. one rotary-cut cutter and a screw rod, and the rotary-cut cutter is installed in the section start of screw rod feeding section and together rotates with screw rod, and there is the homogenizing zone that has installed pin additional the screw rod end, and the diameter of screw rod is below 20mm;

E. barrel, its front end connects transition body, and the rear end connects support, and heating collar is equipped with in the outside, and the power of heating collar is 500W---1000W;

F. one with head and the barrel transition body that links together, and has installed on it to be used for temperature controlled thermocouple;

G. head, they can 360 degree rotations, head has mouthful mould and is fixed on polytetrafluoroethylene (PTFE) pressure roller on mouthful mould by an axle, is processed with stopper slot on mouthful mould, in the head plastic of conduit with add hot-flow flue and separate;

H. a storage heater is installed in the top or a side of barrel, and is controlled the temperature of hot blast separately by knob mounted thereto;

I. temp. controlling box is arranged on the top of Power Drive Unit, interior dress temperature controller and solidify relay.

2. portable minisize plastic extruder according to claim 1, the steel that it is characterized in that making barrel and screw rod are 38CrMoAl, surface carburization is handled hardness and can be reached more than the HRC65.

3. portable minisize plastic extruder according to claim 1 and 2, the diameter that it is characterized in that screw rod is 12-18mm, draw ratio is 18.

4. portable minisize plastic extruder according to claim 1 is characterized in that the support internal diameter is than the big 0.8mm of screw rod external diameter.