CN2448544Y

CN2448544Y - Quick net changing apparatus for plastics extruder

Info

Publication number: CN2448544Y
Application number: CN 00253131
Authority: CN
Inventors: 韩基政
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-17
Filing date: 2000-11-17
Publication date: 2001-09-19
Anticipated expiration: 2010-11-17

Abstract

The utility model relates to a quick net changing device for a plastic extruder, which is composed of a connecting component and a net changing component. A connecting machine barrel of the connecting component is provided with a sealing sleeve and a clamping sleeve; the connecting machine barrel and a connecting flange is connected by a bolt which is sheathed with a spacing sleeve; a net changing board in the connecting component is provided with two groups of flow distribution plates which are provided with filter screens; the net changing board is provided with a handle and a positioning block and passes through the spacing sleeve. When the handle is wrenched, the station switching procedures of the two groups of flow distribution plates and the filter screen can be realized, and time consumption is only 14-16 S. The utility model has the advantages of short down time, less influence to production, low maintenance work, high efficacy, tight sealing and no material leakage.

Description

The plastic extruder quick net exchanging device

The utility model relates to the design and fabrication technology of plastic extruder and shaping machine set corollary apparatus.

In the plastic extruder course of work, plastic melt will produce in the melt and decompose residual thing through plastifying, being heated, and add impurities in raw materials, if do not remove, will cause runner obstruction, goods defective and even shutdown stopping production to occur.For leaching foreign material, this machine needs between screw of plastic extruder head and former screen pack to be set.But along with the continuity that finds time, these online foreign material build up, and cause that head pressure raises, flow descends, when surpassing certain pressure, and filter screen will be broken up, lose efficacy, and must shut down draping.And draping to the operating process of extruding again reaches tens of minutes even several hours, causes material loss, energy waste, output decline, cost up.Be head it off, this draping technology is being studied always and improved to molding machine manufacturing both domestic and external.Through investigation, advanced at present net-changing device has following several pattern: (1) side valve type net-changing device, switch valve plate gentle (liquid) cylinder pressure by net-changing device, diplopore and constitute, draping is quick, but needs the big Power Drive Unit of configuration, its body and sealing ring are easy to wear, the leakiness material, and the maintenance maintenance amount is big.(2) hydraulic pressure (pneumatic) slidingtype net-changing device is made of complex structure gas (liquid) cylinder pressure, slideway, slip web plate, net-changing device body and temperature-controlling system; shut down draping, poorly sealed, easily break down; and need hydraulic pressure (pneumatic) to drive, consumable accessory is more, and maintenance capacity is bigger.(3) the continuous net-changing device of fusion pressure formula is made of belt screen pack, net-changing device body, temperature-controlling system, and the advanced manufacture difficulty of structure is big; the cost height; supporting pressure sensor, thermocouple, temperature controller, time-delay condenser easy break-down, must shut down and detect, maintenance is big.

The purpose of this utility model provides a kind of simple in structure, and operating maintenance is convenient, and is practical, the fireballing plastic extruder quick net exchanging device of draping.

The purpose of this utility model is achieved in that by coupling assembling and draping assembly and constitutes that coupling assembling connects dress sealing shroud and clamping sleeve in the machine barrel, connects bolt connection between machine barrel and the adpting flange, is with spacer sleeve on the bolt.Adorn two component stream plates in the draping assembly on the draping plate, adorn screen pack on the flow distribution plate, handle and location link stopper are housed on the draping plate, the draping plate is through on the spacer sleeve, moves handle, realizes that two component stream plates and screen pack switch the station process, reach the purpose of quick net exchanging.

The utility model has the advantages that: when changing screen pack, instrument 14-16 consuming time second, downtime is short, and is very little to yield effect.Simple in structure, do not need power drive, the maintenance maintenance amount is reduced, improve effect, the device sealing is tight, does not leak material.Cheap, use reliably, have wide practical use.

Below in conjunction with drawings and Examples the utility model is elaborated.

Fig. 1 is the utility model master cutaway view.

Fig. 2 is that the utility model A-A is to view.

Fig. 3 is the utility model flow distribution plate front view.

Fig. 4 is that Fig. 3 flow distribution plate B-B is to view.

This plastic extruder quick net exchanging device is made of coupling assembling and draping assembly as shown in Figures 1 to 4.Coupling assembling connects dress sealing shroud 9 and clamping sleeve 8 in the machine barrel 10, sealing shroud adopts polytetrafluoroethylene (PTFE), connect bolt 2 connections between machine barrel 10 and the adpting flange 3, be with spacer sleeve 12 on the bolt, adorn two component stream plates 7 in the draping assembly on the draping plate 5, dress screen pack 13 on the flow distribution plate is equipped with handle 4 and location link stopper 6 on the draping plate, the draping plate is through on the spacer sleeve.Adopt machining technique just can produce.During work, adpting flange is connected with former 1, connects machine barrel and is connected with plastic extruder bolt 11.The draping plate is provided with two component stream plates and screen pack is settled station, when the screen pack foreign material that link to each other with clamping sleeve are focused to when causing head pressure to surpass normal value, clockwise direction quick rotation handle, Fig. 2 upper right side screen pack 13 is hyperphoric in the lower left work station, and main frame can return to normal production.At this moment, former screen pack has moved to the upper left side of Fig. 2, and the operator can carry out the cleaning of old net and new net more changes jobs at this station.When the screen pack of work station was focused to head pressure and exceeds standard by foreign material once more, counterclockwise turning handle carried out the draping operation as stated above.Should shut down 14-16 quick rotation handle after second, make and newly put screen pack and move to work station fast.Forbid under the situation of left alone without help machine not, by force turning handle.Flow distribution plate must be cleaned out, and must not have thickener to adhere to.Must not under cold conditions, carry out the draping operation.Very good through experiment effect.

Claims

1, plastic extruder quick net exchanging device, form by coupling assembling and draping assembly, it is characterized in that: coupling assembling connects bolt [2] connection between machine barrel [10] and the adpting flange [3], be with spacer sleeve [12] on the bolt, adorn two component stream plates [7] in the draping assembly on the draping plate [5], adorn screen pack [13] on the flow distribution plate, handle [4] and location link stopper [6] are housed on the draping plate, the draping plate is through on the spacer sleeve.

2, plastic extruder quick net exchanging device according to claim 1 is characterized in that: dress sealing shroud [9] and clamping sleeve [8] in the coupling assembling junctor letter [10], sealing shroud adopts polytetrafluoroethylene (PTFE).