CN208593056U - Plastic plate and profile bore double extrusion equipments in the same direction - Google Patents

Abstract

The utility model discloses a kind of plastic plate and profile bores double extrusion equipments in the same direction, it include: power mechanism, feeding mechanism, the conical parallel dual-screw mechanism being connected with power mechanism, the barrel system being sheathed on outside conical parallel dual-screw system, and it is set to the exhaust gear in barrel system, it is characterized in that, conical parallel dual-screw mechanism includes: the identical conical screw in two direction of rotation, every conical screw is successively arranged respectively along the moving direction of material: plasticizing zone, left-hand thread area, Disengagement zone and extrusion zone, wherein, the external taper of every conical screw is set as 1~1.2 degree, internal taper is less than or equal to external taper；The hand of spiral in left-hand thread area and the hand of spiral of plasticizing zone are on the contrary, the hand of spiral of extrusion zone and the hand of spiral of plasticizing zone are identical；Length, the length of plasticizing zone, the length in left-hand thread area and the length of Disengagement zone of extrusion zone are successively successively decreased.

Description

Plastic plate and profile bore double extrusion equipments in the same direction

Technical field

The utility model relates to plastic extrusion field, in particular to a kind of double screw extruder.

Background technique

Being applied to the equipment that plastic conduit and plastic plate manufacture currently on the market mainly has single screw extrusion machine, taper different To double screw extruder and conical parallel dual-screw extruding machine.The unique advantage of single screw extrusion machine is exactly at low cost, but Extrusion force, plasticizing capacity and energy consumption aspect all existing defects.The advantages of taper counter rotation twin screw extruder, is that extrusion force is big, but It is poor plasticizing capacity, low output, energy consumption is high.Conical parallel dual-screw extruding machine due to the equidirectional rotation of its conical screw make by Plastics are processed after entering machine barrel, is squeezed around conical double-screw at 8-shaped in machine barrel, is increased fusion time, reduce The frictional force of plastics and screw barrel reduces energy consumption to ensure that plasticizing quality；Because the screw rod used for taper, is protected The good extrusion force performance of conical double-screw pelletizer is held.

But conical parallel dual-screw extruding machine often will appear feeder and be easy card in extrusion plastic pipeline and plate Firmly, screw rod shearing heat not enough, plasticizing it is bad cause extruder temperature setting be higher by 80 degrees centigrade of single screw rod could be plasticized, energy Consuming higher, product surface has stomata, product surface to have trichobothrium, has the defects of stomata, product embrittlement inside product, especially does height A series of problems, such as wretched insufficiency is plasticized when filled plastics.

Chinese patent application CN1775505A discloses a kind of conical parallel dual-screw extruding machine, it is by power mechanism, connection Axis device, deceleration distributor box, feed system, machine barrel, conical double-screw, exhaust system, pelletizing system, hopper etc. is formed, in machine Main conical screw and secondary conical screw in cylinder equipped with two equidirectional rotations, they respectively with the driving tooth in deceleration distributor box Wheel is connected with driven gear, intermediate gear is additionally provided with below two gears, so that conical double-screw be made to keep at work Equidirectional rotation, the also equidirectional rotation of the helix of conical double-screw.But the conical parallel dual-screw extruding machine is still difficult to gram Take hot inadequate, the undesirable defect of plasticizing of screw rod shearing.

It is squeezed out therefore it provides a kind of shearing heat is big, plasticizing capacity is good, the high conical parallel dual-screw of product quality is made Device becomes industry urgent problem.

Summary of the invention

The purpose of the utility model is to provide a kind of plasticizing capacities, and conical parallel dual-screw strong, that shearing heat is big squeezes out dress It sets.

To achieve the goals above, the utility model provides a kind of plastic plate and profile bores double extrusion equipments in the same direction, Include: power mechanism, feeding mechanism, the conical parallel dual-screw mechanism being connected with power mechanism, be sheathed on conical parallel dual pair Barrel system outside screw rod system and the exhaust gear being set in barrel system, which is characterized in that conical parallel dual-screw Mechanism includes: the identical conical screw in two direction of rotation, and every conical screw is successively arranged respectively along the moving direction of material: Plasticizing zone, left-hand thread area, Disengagement zone and extrusion zone, wherein the external taper of every conical screw is set as 1~1.2 degree, inner cone Degree is less than or equal to external taper；The hand of spiral in left-hand thread area and the hand of spiral of plasticizing zone on the contrary, extrusion zone the hand of spiral It is identical as the hand of spiral of plasticizing zone；Length, the length of plasticizing zone, the length in left-hand thread area and the length of Disengagement zone of extrusion zone Degree successively successively decreases.

Selectively, the lead of screw thread of extrusion zone is greater than the lead of screw thread of plasticizing zone.

Selectively, left-hand thread area is equipped with the first shallow slot of multiple spiral shell ribs perpendicular to left-hand thread area being equally spaced, The width of first shallow slot is set as 3rd/2nd to four/3rds of the spiral shell rib width in left-hand thread area.

Selectively, the second shallow slot of multiple tracks is equipped at the screw rod outer rim of Disengagement zone, the width of the second shallow slot is set as separating / to six/7th of sector width.

Selectively, the second shallow slot is set as trapezoidal or other forms flutings.

Selectively, third of the interlude of extrusion zone equipped with multiple spiral shell ribs perpendicular to extrusion zone being equally spaced is shallow Slot, the width of third shallow slot are set as the one third of the spiral shell rib width of extrusion zone to a quarter.

Selectively, barrel system includes front barrel and rear machine barrel along the moving direction of material, on the outer wall of barrel system Equipped with electromagnetic heater.

Selectively, it is opened in exhaust seat of the roof close to the front end of extrusion zone of front barrel, and is opened in rear machine barrel Roof and gas inlet close to the rear end of extrusion zone, the bottom of exhaust seat is equipped with dismountable exhaust sealing plate.

Selectively, feeding mechanism is set as double-screw feeder, and agitating device is had additional at hopper, passes through feeding Machine rotation seat is set to above conical parallel dual-screw mechanism the discharge port and conical parallel dual-screw machine for making double-screw feeder The feeding inlet of structure is corresponding.

Selectively, by connecting vacuum tank and vacuum pump to realize the discharge to the gas in barrel system at exhaust seat Effect.

Selectively, the machine barrel mobile device positioned at barrel system front end uses electronic mode, is located at barrel system rear end Rear adjusting bracket use thread depth adjustable way.

The beneficial effects of the utility model are: (1), the increase left-hand thread section area behind the plasticizing zone of conical screw, are improved The Filling Length of plasticizing zone, the first shallow slot being arranged at left-hand thread area more efficiently improve melting effect；(2), Disengagement zone The second trapezoidal shallow slot of the multiple tracks being arranged at screw rod outer rim can effectively increase plasticizing effect, solve the hot inadequate, modeling of screw rod shearing Change undesirable defect；(3), the extrusion zone with steep-lead thread being arranged behind Disengagement zone can be used as when making plastic plate Exhaust outlet can be used as delivery element when making plastic pipe；(4), it can take away in extrusion plastic plate set on exhaust seat bottom Portion is vented sealing plate, is sufficiently vented, and extrusion plastic tubing when can load onto exhaust sealing plate, prevents overflow, prevents extrusion pressure Fluctuation, guarantee that tube wall thickness is uniform, plastic plate can also be produced by realizing a machine both and can producing plastic pipe；(5), machine barrel System uses electromagnetic heater, and heating acts directly on inside machine barrel, and heating efficiency improves, and energy consumption greatly reduces；(6), machine barrel Mobile device uses electronic mode, greatly reduces the take-down time, deceleration labor intensity, rear adjusting bracket is adjustable using thread depth Section mode, installation operation difficulty reduce, and regulating time shortens, and efficiency improves.

Detailed description of the invention

Fig. 1 shows the plastic plate of the utility model and profile bores the organigrams of double extrusion equipments in the same direction.

Fig. 2 shows the organigrams of the conical screw of the utility model.

Fig. 3 shows the main schematic diagram of partial enlargement of the Disengagement zone of the utility model.

Specific embodiment

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model Limitation.

Firstly, referring to FIG. 1, the plastic plate and profile of the utility model are same as a kind of non-limiting embodiment It include: power mechanism 1, feeding mechanism 2, conical parallel dual-screw mechanism 3, barrel system 4 and exhaust to double extrusion equipments are bored Mechanism 5.

Power mechanism 1 imparts power to conical parallel dual-screw mechanism 3, so that in conical parallel dual-screw mechanism 3 Two screw rods obtain consistent steering and revolving speed.

In order to overcome hot inadequate, the undesirable defect of plasticizing of screw rod shearing, in the non-limiting embodiments, as shown in Figure 1, The conical parallel dual-screw mechanism 3 of the utility model includes: the identical conical screw 30 in two direction of rotation, direction of rotation or To the right or simultaneously to the left simultaneously, the external taper of two conical screws is set as 1~1.2 degree, and internal taper is less than or equal to outer cone Degree.As shown in Fig. 2, conical screw 30 is successively arranged respectively along the moving direction of material: plasticizing zone 301, divides left-hand thread area 302 From area 303 and extrusion zone 304.The hand of spiral in left-hand thread area 302 and the hand of spiral of plasticizing zone 301 are on the contrary, extrusion zone 304 The hand of spiral it is identical as the hand of spiral of plasticizing zone 301.In terms of length layout, the length of extrusion zone 304, plasticizing zone 301 Length, the length in left-hand thread area 302 and the length of Disengagement zone 303 successively successively decrease.

The utility model increases left-hand thread area 302 behind plasticizing zone 301, improves the Filling Length of plasticizing zone 301, Meanwhile to improve melting effect, multiple spiral shell ribs perpendicular to left-hand thread area 302 being equally spaced are equipped in left-hand thread area 302 Depth be 4 millimeters of the first shallow slot 3021.Then, Disengagement zone 303 is set behind left-hand thread area 302, as shown in figure 3, dividing Outer rim from area 303 depth for having multiple tracks trapezoidal of getting on the bus is 3 millimeters of the second shallow slot 3031, to effectively increase plasticizing effect Fruit.It is provided with the extrusion zone 304 of steep-lead thread behind Disengagement zone 303,304 interlude of extrusion zone is equipped with multiple be equally spaced Perpendicular to the third shallow slot 3041 of the spiral shell rib of extrusion zone 304, the depth of third shallow slot 3041 is the spiral groove depth of extrusion zone 304 Half.

As a kind of alternate embodiment, as shown in Figure 1, barrel system 4 is split type machine barrel, along the shifting of material Dynamic direction is divided into front barrel 41 and rear machine barrel 42, and outer wall is equipped with electromagnetic heater 43, and heating effect acts directly on machine barrel The inside, heating efficiency improve, and booting heating only needs 20 minutes, greatly reduce energy consumption.Meanwhile positioned at 4 front end of barrel system Machine barrel mobile device 44 uses electronic mode, thus greatly reduce the take-down time, deceleration labor intensity, and and it is located at barrel system 4 The rear adjusting bracket 45 of rear end then uses thread depth adjustable way, to reduce installation operation difficulty, shortens regulating time, Improve packaging efficiency.

As another alternate embodiment, exhaust gear 5 is arranged in barrel system 4 comprising 51 He of exhaust seat The bottom of gas inlet 52, exhaust seat 51 is equipped with an exhaust sealing plate 53, and extruder pressure in extrusion plastic plate is low, It can choose and take away exhaust sealing plate 53, be sufficiently vented, and due to head pressure height when extrusion plastic tubing, gas is few, It does not need to open up exhaust outlet, it is possible to load onto exhaust sealing plate 53, prevent overflow, prevent the fluctuation of extrusion pressure, guarantee tubing Uniform wall thickness.Gas inlet 52 is used to inject foamed gas or foaming agent, to produce foaming product.In the utility model In, the discharge effect to the gas in machine barrel is realized by connection vacuum tank 54 and vacuum pump 55 at exhaust seat 51.

It can be seen that in the present invention, power mechanism 1 imparts power to conical parallel dual-screw mechanism 3 first In two conical screws 30 so that they obtain consistent steerings and revolving speed, material is sent into bores while stirring by feeding mechanism 3 Just as into double-helical screw mechanism 3, material successively passes through plasticizing zone 301, left-hand thread area 302, Disengagement zone 303 and extrusion zone 304, when producing plastic plate, plastic pipe or foaming product, corresponding device in exhaust gear 5 is accordingly adjusted, thus Complete the preparation of product.In extrusion process, the shearing heat of conical parallel dual-screw mechanism 3 is big, is plasticized, is kneaded, filling out Fill ratio height, and exhaust outlet not overflow in preparation process, the product strength produced is good, surface-brightening, can extrusion plastic plate Material again can extrusion plastic tubing.

Although preferred embodiments of the present invention have been described in detail herein, it is to be understood that the utility model is not It is confined to the specific structure be described in detail and shown here, it can be by without departing from the spirit and scope of the utility model Those skilled in the art realizes other modifications and variant.

Claims (8)

1. a kind of plastic plate and profile bore double extrusion equipments in the same direction, comprising: power mechanism, feeding mechanism and the engine Conical parallel dual-screw mechanism that structure is connected, the barrel system being sheathed on outside the conical parallel dual-screw system, Yi Jishe The exhaust gear being placed in the barrel system, which is characterized in that the conical parallel dual-screw mechanism includes: two rotation sides To identical conical screw, the every conical screw is successively arranged respectively along the moving direction of material: plasticizing zone, left-hand thread Area, Disengagement zone and extrusion zone, wherein the external taper of the every conical screw is set as 1~1.2 degree, internal taper be less than or Equal to external taper；The hand of spiral in the left-hand thread area is with the hand of spiral of the plasticizing zone on the contrary, the spiral of the extrusion zone Direction is identical as the hand of spiral of the plasticizing zone；The length of the extrusion zone, the length of plasticizing zone, the length in left-hand thread area with And the length of Disengagement zone is successively successively decreased.

2. plastic plate as described in claim 1 and profile bore double extrusion equipments in the same direction, which is characterized in that the extrusion zone Lead of screw thread is greater than the lead of screw thread of the plasticizing zone.

3. plastic plate as claimed in claim 2 and profile bore double extrusion equipments in the same direction, which is characterized in that the left-hand thread area It is equipped with the first shallow slot of multiple spiral shell ribs perpendicular to the left-hand thread area being equally spaced, the width setting of first shallow slot It is 3rd/2nd to four/3rds of the spiral shell rib width in the left-hand thread area.

4. plastic plate as claimed in claim 3 and profile bore double extrusion equipments in the same direction, which is characterized in that the Disengagement zone At screw rod outer rim be equipped with the second shallow slot of multiple tracks, the width of second shallow slot be set as it is described separation sector width 1/7th to 1/6th.

5. plastic plate as claimed in claim 4 and profile bore double extrusion equipments in the same direction, which is characterized in that second shallow slot It is set as trapezoidal.

6. plastic plate as claimed in claim 5 and profile bore double extrusion equipments in the same direction, which is characterized in that the extrusion zone Interlude is equipped with the third shallow slot of multiple spiral shell ribs perpendicular to the extrusion zone being equally spaced, and the width of the third shallow slot is set It is set to the one third of the spiral shell rib width of the extrusion zone to a quarter.

7. plastic plate as described in claim 1 and profile bore double extrusion equipments in the same direction, which is characterized in that the barrel system Moving direction along material includes front barrel and rear machine barrel, and the outer wall of the barrel system is equipped with electromagnetic heater.

8. plastic plate as claimed in claim 7 and profile bore double extrusion equipments in the same direction, which is characterized in that the exhaust gear Include: the exhaust seat for being opened in the roof of the front barrel close to the front end of the extrusion zone, and is opened in the rear machine barrel Roof and gas inlet close to the rear end of the extrusion zone, the bottom of the exhaust seat is equipped with dismountable exhaust envelope Plate.