CN213166782U

CN213166782U - Plastic extrusion device

Info

Publication number: CN213166782U
Application number: CN202022016782.1U
Authority: CN
Inventors: 张艳
Original assignee: Chongqing Industry & Trade Polytechnic
Current assignee: Chongqing Industry & Trade Polytechnic
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-05-11
Anticipated expiration: 2030-09-15

Abstract

The utility model belongs to the technical field of plastic product production equipment, and particularly discloses a plastic extrusion device, which comprises a mixing box and an extrusion box, wherein the mixing box is used for mixing and melting plastic raw materials and plastic additives, and the extrusion box is used for extruding and molding the raw materials mixed in the mixing box; the top of the mixing box is provided with a feed hopper, a mixing unit is arranged in the mixing box and comprises a first driving part and a mixing part, the mixing part comprises a rotating shaft and a plurality of groups of stirring blades, the upper end of the rotating shaft is connected to the mixing box in a sealing and rotating mode, and the first driving part is used for driving the rotating shaft to rotate; the inner wall of the mixing box is provided with a cavity, a heating block is fixed in the cavity, and the heating block is electrically connected with an external power supply; the rotating shaft and the stirring blades are both of hollow structures, heating wires are fixed in the stirring blades and the rotating shaft, and the heating wires are powered by the battery pack. The device can solve the problem that the plastic raw materials and the plastic additives cannot be well heated and melted due to uneven temperature in the mixing box in the prior art.

Description

Plastic extrusion device

Technical Field

The utility model belongs to the technical field of plastic products production facility, especially, relate to a plastics extrusion device.

Background

In the production of plastic products, a plastic extruder is the main equipment for plastic processing and molding. The extrusion device firstly heats the plastic raw material to a molten state, and then the molten plastic is extruded to the film blowing die head by a screw in the machine. In the plastic extrusion molding equipment, the plastic extruder is generally called as a main machine, and the subsequent equipment matched with the plastic extruder is called as an auxiliary machine, the plastic extruder has multiple machine types such as single screw, double screw, multi-screw and no screw, and the plastic extruder can be matched with various plastic molding auxiliary machines such as pipes, films, rods, monofilaments, flat wires, packing belts, extruding nets, plates, profiles, pelleting, cable coating and the like to form various plastic extrusion molding production lines to produce various plastic products, and the plastic extrusion molding machine is widely applied to the plastic processing industry no matter now or in the future.

Plastics extrusion device need stir plastics and mix, and current plastics extrusion device can not be fine mixes plastics, leads to the fusion that plastics raw materials and plastic additive can not be fine, and mixing efficiency is low to extrude plastics as for plastics extruder can not be fine, great reduction plastics extrusion device's practicality.

For solving above-mentioned technical problem, chinese patent that publication number is CN211390051U discloses a plastics extruder takes precautions against earthquakes, including the extruder, the top fixedly connected with feeder hopper and the feed bin of extruder, the outer wall fixedly connected with mixing box of feed bin, the interior roof fixedly connected with dead lever of mixing box, the outer wall fixedly connected with heating block of dead lever, the interior roof fixedly connected with baffle of mixing box, one side fixedly connected with fixed block of mixing box, one side of fixed block and the inside wall fixed connection of extruder, the top fixedly connected with agitator motor of extruder, agitator motor's output shaft passes through the first pivot of shaft coupling fixedly connected with.

Although the technical scheme can ensure that the mixing and stirring between the plastic raw material and the plastic additive are more uniform, the stirring and extruding efficiency is also improved, thereby improving the overall working efficiency. However, the heating block is only arranged on the inner wall of the mixing box, so that the temperature in the whole mixing box is difficult to be consistent, the temperature in the mixing box is not uniform, and the plastic raw material and the plastic additive cannot be well heated and melted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plastics extrusion device to it is inhomogeneous to solve mixing box interior temperature among the prior art, thereby causes plastic raw materials and plastic additive can not heat the fused problem well.

In order to achieve the above purpose, the technical scheme of the utility model is that: a plastic extrusion device comprises a mixing box and an extrusion box, wherein the mixing box is used for mixing and melting plastic raw materials and plastic additives, and the extrusion box is used for extruding and molding the raw materials mixed in the mixing box; the mixing device comprises a mixing box, a feeding hopper, a mixing unit, a first driving part and a second driving part, wherein the top of the mixing box is provided with the feeding hopper, the mixing unit is arranged in the mixing box and comprises a rotating shaft and a plurality of groups of stirring blades fixed on the rotating shaft, the upper end of the rotating shaft is connected to the mixing box in a sealing and rotating mode, and the first driving part is used for driving the rotating shaft to rotate; the inner wall of the mixing box is provided with a cavity, a heating block is fixed in the cavity, and the heating block is electrically connected with an external power supply; the rotating shaft and the stirring blades are both of a hollow structure, heating wires are fixed in the stirring blades and the rotating shaft, and the heating wires are powered by a battery pack; the bottom of mixing box is equipped with the discharge gate, the top of extruding the case is equipped with the feed inlet, the feed inlet with the discharge gate is just right.

Further, extrude the incasement and be equipped with the unit of extruding, extrude the unit including extruding portion and second drive division, extrude the portion including extruding the screw rod, it connects to extrude the screw rod rotation extrude the incasement, one side of extruding the case is equipped with extrudes the mouth, the opposite side of extruding the case is located to the second drive division, the second drive division is used for driving extrude the screw rod and rotate.

Furthermore, a sealing unit is arranged at the lower side in the mixing box and comprises sealing parts arranged at two sides of the mixing box, each sealing part comprises a driving part and a sealing plate, sliding grooves are formed in two sides of the mixing box, the sealing plates are connected in the sliding grooves in a sliding manner, and the two groups of sealing plates can be in contact with each other and can prevent raw materials in the mixing box from falling downwards; the driving piece is fixed outside the mixing box and used for driving the sealing plate to slide in a reciprocating mode.

Further, the mixing portion is provided with two groups, the stirring blades on the two groups of mixing portions are arranged in a staggered mode in the vertical direction, belt pulleys are fixed on the two groups of rotating shafts, and belts are connected to the two groups of belt pulleys.

Furthermore, the stirring blade is inclined, and one end of the stirring blade, which is far away from the rotating shaft, is lower than the other end.

Further, the sealing plate is inclined, and one side of the sealing plate, which is far away from the center of the mixing box, is lower than the other side.

Further, the discharge gate of mixing box is established to leaking hopper-shaped.

Further, the feeder hopper is equipped with two and is located the both sides of mixing box respectively.

The working principle of the technical scheme is as follows: open external power supply and group battery for heating block and heater wire heat the mixing box, and two sets of closing plates offset this moment, add plastics raw materials and plastics additive respectively and open first drive division to two feeder hoppers, and first drive division drives two sets of pivots and stirring vane and rotates, and stirring vane is carrying out the in-process of stirring to plastics raw materials and plastics additive, still can heat the plastics raw materials rather than the contact. After stirring a period of time, the driving piece drives the closing plate to move towards the direction of keeping away from the mixing box center to make the raw materials after mixing enter into the extrusion box from the discharge gate. The second driving part is started, the second driving part drives the extrusion screw to rotate, and the raw materials in the extrusion box are conveyed towards the extrusion port until being extruded from the extrusion port.

The beneficial effects of this technical scheme lie in: the two groups of mixing parts are arranged in a staggered mode in the vertical direction, so that the plastic raw materials and the plastic additives can be mixed more uniformly. The stirring blades are obliquely arranged, so that plastic raw materials and plastic additives can be prevented from being accumulated on the surfaces of the stirring blades, and meanwhile, when the device is cleaned, the oblique stirring blades can be cleaned more cleanly. And the sealing unit intermittently moves to intermittently open the sealing plate, so that the raw materials can be more uniformly mixed in the mixing box. And fourthly, the sealing plate is obliquely arranged, so that the raw materials can be prevented from being accumulated on the surface of the sealing plate. Heating wires are arranged in the stirring blades and the rotating shaft, and a heating block is arranged on the inner wall of the mixing box, so that the raw materials in the mixing box can be more fully melted.

Drawings

Fig. 1 is a schematic structural view of the plastic extrusion device of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a mixing box 1, an extrusion box 2, a feed hopper 3, a rotating shaft 4, a stirring blade 5, a heating block 6, a heating wire 7, a first driving part 8, a belt 9, a sealing plate 10, a driving part 11, a discharge port 12, a second driving part 13, an extrusion port 14 and an extrusion screw 15.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment is basically as shown in the attached figure 1: a plastic extrusion device comprises a mixing box 1 and an extrusion box 2, wherein the mixing box 1 is used for mixing and melting plastic raw materials and plastic additives, and the extrusion box 2 is used for extruding and molding the raw materials mixed in the mixing box 1; the top of mixing box 1 is equipped with two sets of feeder hoppers 3, be equipped with the hybrid unit in the mixing box 1, the hybrid unit includes first drive division 8 and two sets of hybrid portions, every group hybrid portion includes pivot 4, the group battery is with fixing a plurality of groups stirring vane 5 in pivot 4, stirring vane 5 is the slope form, stirring vane 5 keeps away from the one end of pivot 4 and is less than the other end, the sealed rotation in upper end of pivot 4 is connected on mixing box 1, stirring vane 5 in two sets of hybrid portions sets up in the mistake in vertical direction, all be fixed with the belt pulley on two sets of pivots 4, be connected with belt 9 on two sets of belt pulleys, first drive division 8 is used for driving one of them set of pivot 4 to rotate, first drive division 8 is fixed on mixing box 1. The inner wall of the mixing box 1 is provided with a cavity, a heating block 6 is fixed in the cavity, and the heating block 6 is electrically connected with an external power supply; the rotating shaft 4 and the stirring blades 5 are both of a hollow structure, heating wires 7 are fixed in the stirring blades 5 and the rotating shaft 4, the heating wires 7 are powered by a battery pack, and the battery pack is fixed on the rotating shaft 4; the bottom of mixing box 1 is equipped with discharge gate 12, and the top of extruding case 2 is equipped with the feed inlet, and feed inlet and discharge gate 12 are just right, and the discharge gate 12 of mixing box 1 is established to leaking hopper-shaped.

Be equipped with in the extrusion case 2 and extrude the unit, extrude the unit including extruding portion and second drive division 13, extrude the portion including extruding screw rod 15, extrude screw rod 15 and rotate to be connected in extrusion case 2, extrude the right side of case 2 and be equipped with and extrude mouthful 14, second drive division 13 is fixed in the left side of extruding case 2, and second drive division 13 is used for driving and extrudes screw rod 15 and rotates.

The lower side in the mixing box 1 is provided with a sealing unit, the sealing unit comprises a programmable controller and sealing parts arranged on two sides of the mixing box 1, each sealing part comprises a driving part 11 and a sealing plate 10, two sides of the mixing box 1 are provided with sliding grooves, the sealing plates 10 are connected in the sliding grooves in a sliding manner, and the two groups of sealing plates 10 can contact and prevent raw materials in the mixing box 1 from falling down; a driving member 11 is fixed outside the mixing box 1, and the driving member 11 is used for driving the sealing plate 10 to slide back and forth. The sealing plate 10 is inclined such that one side of the sealing plate 10 away from the center of the mixing box 1 is lower than the other side. A programmable controller is used to control the movement of the drive member 11, in this embodiment a Siemens model S7-200 controller is used.

In this embodiment, the first driving portion 8 and the second driving portion 13 both use motors, and the driving member 11 uses an air cylinder.

The specific implementation process is as follows:

open external power supply and group battery for heating block 6 and heater strip 7 heat mixing box 1, and two sets of closing plates 10 offset this moment, add plastics raw materials and plastics additive respectively and open first drive division 8 to two feeder hoppers 3, and first drive division 8 drives two sets of pivots 4 and stirring vane 5 and rotates, and stirring vane 5 is carrying out the in-process of stirring to plastics raw materials and plastics additive, still can heat the plastics raw materials rather than the contact. After stirring for a period of time, the driving member 11 drives the sealing plate 10 to move in a direction away from the center of the mixing box 1, so that the mixed raw materials enter the extrusion box 2 from the discharge port 12. The second driving part 13 is started, and the second driving part 13 drives the extrusion screw 15 to rotate and transport the raw material in the extrusion box 2 towards the extrusion port 14 until the raw material is extruded from the extrusion port 14.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only for the embodiments of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, and those skilled in the art will know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date, and those skilled in the art can combine their own ability to perfect and implement the schemes, and some typical known structures or known methods should not become obstacles for those skilled in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A plastic extrusion device, characterized in that: the plastic additive mixing device comprises a mixing box and an extrusion box, wherein the mixing box is used for mixing and melting plastic raw materials and plastic additives, and the extrusion box is used for extruding and molding the raw materials mixed in the mixing box; the mixing device comprises a mixing box, a feeding hopper, a mixing unit, a first driving part and a second driving part, wherein the top of the mixing box is provided with the feeding hopper, the mixing unit is arranged in the mixing box and comprises a rotating shaft and a plurality of groups of stirring blades fixed on the rotating shaft, the upper end of the rotating shaft is connected to the mixing box in a sealing and rotating mode, and the first driving part is used for driving the rotating shaft to rotate; the inner wall of the mixing box is provided with a cavity, a heating block is fixed in the cavity, and the heating block is electrically connected with an external power supply; the rotating shaft and the stirring blades are both of a hollow structure, heating wires are fixed in the stirring blades and the rotating shaft, and the heating wires are powered by a battery pack; the bottom of mixing box is equipped with the discharge gate, the top of extruding the case is equipped with the feed inlet, the feed inlet with the discharge gate is just right.

2. A plastic extrusion apparatus as set forth in claim 1, wherein: the extrusion box is internally provided with an extrusion unit, the extrusion unit comprises an extrusion part and a second driving part, the extrusion part comprises an extrusion screw, the extrusion screw is rotatably connected in the extrusion box, one side of the extrusion box is provided with an extrusion port, the second driving part is arranged at the other side of the extrusion box, and the second driving part is used for driving the extrusion screw to rotate.

3. A plastic extrusion apparatus as set forth in claim 1, wherein: the lower side in the mixing box is provided with a sealing unit, the sealing unit comprises sealing parts arranged on two sides of the mixing box, each group of sealing parts comprises a driving part and a sealing plate, two sides of the mixing box are respectively provided with a sliding groove, the sealing plates are connected in the sliding grooves in a sliding manner, and the two groups of sealing plates can be in contact with each other and can prevent raw materials in the mixing box from falling downwards; the driving piece is fixed outside the mixing box and used for driving the sealing plate to slide in a reciprocating mode.

4. A plastic extrusion apparatus as set forth in claim 1, wherein: the mixing portion is provided with two groups, stirring blades on the two groups of mixing portions are arranged in a staggered mode in the vertical direction, belt pulleys are fixed on the two groups of rotating shafts, and belts are connected to the two groups of belt pulleys.

5. A plastic extrusion apparatus as set forth in claim 1, wherein: the stirring blade is the slope form, and the stirring blade is kept away from the one end of pivot and is less than the other end.

6. A plastic extrusion apparatus as set forth in claim 3, wherein: the sealing plate is inclined, and one side of the sealing plate, which is far away from the center of the mixing box, is lower than the other side.

7. A plastic extrusion apparatus as set forth in claim 1, wherein: the discharge gate of mixing box is established to leaking hopper-shaped.

8. A plastic extrusion apparatus as set forth in claim 1, wherein: the feeder hopper is equipped with two and is located the both sides of mixing box respectively.