Extruder for plastic film production

Abstract

The utility model discloses an extruder for plastic film production, which comprises an extruder body, one side of the upper surface of the extruder body is communicated with a material injection pipe, the upper end of the material injection pipe is provided with a material storage hopper, the lower end of the material storage hopper is communicated with the material injection pipe through a connecting short pipe, and an opening at the upper end of the material storage hopper is fixedly connected with a cross beam. A vertical shaft is rotationally connected to the middle of the bottom face of the beam. Powder is poured into the material storage hopper, the motor drives the vertical shaft to rotate, at the moment, the stirring rod rotates in the powder, accumulation is avoided, meanwhile, the quantitative structure is driven to quantitatively inject the powder into the material injection pipe, meanwhile, the heating assembly is controlled to dissipate heat, and the powder passing through the material injection pipe is preheated; and finally, the powder falls into the extruder body and is extruded along with the movement of the screw rod, the powder entering the extruder is more uniform through quantitative discharging, meanwhile, the powder can be preheated, and the melting and mixing effect and the granulation quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of extruder equipment, in particular to an extruder for producing plastic films. Background Art

[0002] The plastic film production extruder relies on the pressure and shear force generated by the rotation of the screw to fully plasticize and evenly mix the material, and then form it through a die. Plastic products often use extruder equipment for melting and mixing for subsequent product processing.

[0003] After the powder is mixed, it is melted in the extruder and extruded into filaments. After cooling and solidification, it is cut and granulated. As the raw material of the film blowing machine, the existing extruder powder is prone to blockage at the outlet of the upper hopper, resulting in uneven feeding of the extruder and material breakage. At the same time, the temperature of the powder is relatively cool after entering the extruder, which affects the melting and mixing effect of the powder and directly affects the quality of its granulation. Utility Model Content

[0004] The purpose of the utility model is to provide an extruder for producing plastic film in order to solve the above problems, as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides an extruder for producing plastic film, comprising an extruder body, one side of the upper surface of the extruder body is connected with a feeding pipe, the upper end of the feeding pipe is provided with a storage hopper, the lower end of the storage hopper is connected with the feeding pipe through a connecting short pipe, a cross beam is fixedly connected to the upper opening of the storage hopper, a vertical shaft is rotatably connected to the middle part of the bottom surface of the cross beam, and a motor for driving the vertical shaft to rotate is fixedly installed in the middle part of the cross beam, a quantitative structure for quantitative discharging is provided in the connecting short pipe at the lower end of the vertical shaft, a stirring rod is fixedly connected to the middle part of the vertical shaft, and a heating component for preheating raw material particles is provided in the feeding pipe.

[0007] When using the above-mentioned extruder for producing plastic film, the powder is poured into the storage hopper, and the vertical shaft is driven to rotate by the motor. At this time, the stirring rod rotates in the powder to avoid accumulation, and at the same time drives the quantitative structure to quantitatively inject powder into the injection pipe. At the same time, the heating component is controlled to dissipate heat to preheat the powder passing through the injection pipe, and finally falls into the inside of the extruder body and is extruded as the screw rod moves.

[0008] Preferably, a plurality of guide inclined plates are fixedly connected to the interior of the injection pipe, and the plurality of guide inclined plates are respectively located on both sides of the injection pipe and are arranged alternately.

[0009] Preferably, the heating assembly includes a heating strip fixedly mounted inside the guide ramp, and the guide ramp is made of a heat-conducting material.

[0010] Preferably, the inner wall of the injection pipe is provided with a heat-insulating layer.

[0011] Preferably, the quantitative structure includes a fixed plate fixedly connected to the lower end of the connecting short tube, the lower end of the vertical shaft is fixedly connected to a rotating plate sleeved with the connecting short tube, and both sides of the rotating plate and the fixed plate are penetrated along the central axis direction to open a discharge port.

[0012] Preferably, the thickness of the rotating plate is greater than the thickness of the fixed plate.

[0013] Preferably, there are two stirring rods, which are respectively located on both sides of the vertical shaft, and the two stirring rods are arranged one high and one low.

[0014] Preferably, one side of the two stirring rods close to the rotation direction is set as an arc surface, and the upper surfaces of the two stirring rods are fixedly connected with a plurality of guide plates.

[0015] The beneficial effects are:

[0016] Powder is poured into the storage hopper and the vertical shaft is driven to rotate by the motor. At this time, the stirring rod rotates in the powder to avoid accumulation. At the same time, the quantitative structure is driven to quantitatively inject powder into the injection pipe. At the same time, the heating component is controlled to emit heat to preheat the powder passing through the injection pipe. Finally, the powder falls into the extruder body and is extruded with the movement of the screw rod. The quantitative discharge makes the powder entering the extruder more uniform and the powder can be preheated, thereby improving the melting and mixing effect and the granulation quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is a three-dimensional diagram of the storage hopper of the utility model;

[0020] Figure 3 It is a sectional stereoscopic view of the injection pipe of the utility model.

[0021] The following are the descriptions of the reference numerals:

[0022] 1. Extruder body; 2. Injection pipe; 3. Storage hopper; 4. Connecting short pipe; 5. Crossbeam; 6. Motor; 7. Vertical shaft; 8. Rotating plate; 9. Fixed plate; 10. Discharge port; 11. Stirring rod; 12. Guide vertical plate; 13. Guide inclined plate; 14. Heating strip; 15. Insulation layer. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0024] See also Figure 1-Figure 3 As shown, the utility model provides an extruder for producing plastic film, including an extruder body 1, one side of the upper surface of the extruder body 1 is connected with a feeding tube 2, the upper end of the feeding tube 2 is provided with a storage hopper 3, the lower end of the storage hopper 3 is connected with the feeding tube 2 through a connecting short tube 4, a cross beam 5 is fixedly connected to the upper opening of the storage hopper 3, a vertical shaft 7 is rotatably connected to the middle of the bottom surface of the cross beam 5, and a motor 6 for driving the vertical shaft 7 to rotate is fixedly installed in the middle of the cross beam 5, a quantitative structure for quantitative discharging is provided in the connecting short tube 4 at the lower end of the vertical shaft 7, a stirring rod 11 is fixedly connected to the middle of the vertical shaft 7, and a heating component for preheating raw material particles is provided in the feeding tube 2.

[0025] Reference Figure 3 As shown, a plurality of guide ramps 13 are fixedly connected to the inside of the injection tube 2, and the plurality of guide ramps 13 are respectively located on both sides of the injection tube 2 and are staggered. The heating assembly includes a heating strip 14 fixedly installed inside the guide ramp 13, and the guide ramp 13 is made of heat-conducting material. When the powder falls onto the upper guide ramp 13, it falls to the guide ramp 13 on the other side by gravity, and so on, thereby increasing the residence time of the powder in the injection tube 2. At the same time, the heating strip 14 heats the guide ramp 13, which can better preheat the powder.

[0026] Specifically, the inner wall of the injection pipe 2 is provided with a heat-insulating layer 15, which can ensure a constant temperature inside the injection pipe 2 and better preheat the powder.

[0027] As an optional embodiment, the quantitative structure includes a fixed plate 9 fixedly connected to the lower end of the connecting short tube 4, and the lower end of the vertical shaft 7 is fixedly connected to a rotating plate 8 sleeved with the connecting short tube 4, and both sides of the rotating plate 8 and the fixed plate 9 are penetrated by a discharge port 10 along the central axis direction. When the vertical shaft 7 drives the rotating plate 8 to rotate, the discharge port 10 on the rotating plate 8 discharges the stored powder and moves with it. When the discharge port 10 on the rotating plate 8 coincides with the discharge port 10 on the fixed plate 9, the powder falls into the injection tube 2, thereby realizing quantitative discharging.

[0028] Specifically, the thickness of the rotating plate 8 is greater than that of the fixed plate 9, so that more powder can be stored at the discharge port 10 on the rotating plate 8, thereby increasing the single powder discharge amount.

[0029] Reference Figure 2 As shown, there are two stirring rods 11, which are respectively located on both sides of the vertical shaft 7, and the two stirring rods 11 are set one high and one low. When the vertical shaft 7 rotates, the stirring rods 11 on both sides are driven to rotate together. The stirring rods 11 with high and low designs can fully stir the powders in the high and low layers.

[0030] Specifically, the sides of the two stirring rods 11 close to the rotation direction are set as arc surfaces, and the upper surfaces of the two stirring rods 11 are fixedly connected with a plurality of guide plates 12, which can reduce the rotation resistance of the stirring rods 11 in the powder, and the guide plates 12 can better stir the powder.

[0031] With the above structure, when in use, the powder is poured into the storage hopper 3, and the vertical shaft 7 is driven to rotate by the motor 6. At this time, the stirring rod 11 rotates in the powder to avoid accumulation, and at the same time drives the quantitative structure to quantitatively inject powder into the injection pipe 2. At the same time, the heating component is controlled to emit heat, and the powder passing through the injection pipe 2 is preheated, and finally falls into the inside of the extruder body 1 and is extruded along with the movement of the screw rod.

[0032] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An extruder for producing plastic film, characterized in that: The invention comprises an extruder body (1), wherein one side of the upper surface of the extruder body (1) is connected to a material injection pipe (2), a material storage hopper (3) is arranged at the upper end of the material injection pipe (2), the lower end of the material storage hopper (3) is connected to the material injection pipe (2) via a connecting short pipe (4), a cross beam (5) is fixedly connected to the upper opening of the material storage hopper (3), a vertical shaft (7) is rotatably connected to the middle of the bottom surface of the cross beam (5), and a motor (6) for driving the vertical shaft (7) to rotate is fixedly installed in the middle of the cross beam (5), a quantitative structure for quantitatively discharging material is arranged in the connecting short pipe (4), a stirring rod (11) is fixedly connected to the middle of the vertical shaft (7), and a heating component for preheating raw material particles is arranged in the material injection pipe (2).

2. The extruder for producing plastic film according to claim 1, characterized in that: A plurality of guide inclined plates (13) are fixedly connected to the interior of the injection pipe (2), and the plurality of guide inclined plates (13) are respectively located on both sides of the injection pipe (2) and are arranged in a staggered manner.

3. The extruder for producing plastic film according to claim 2, characterized in that: The heating component comprises a heating strip (14) fixedly mounted inside the guide inclined plate (13), and the guide inclined plate (13) is made of a heat-conducting material.

4. The extruder for producing plastic film according to claim 3, characterized in that: The inner wall of the injection pipe (2) is provided with a heat-insulating layer (15).

5. The extruder for producing plastic film according to claim 1, characterized in that: The quantitative structure comprises a fixed plate (9) fixedly connected to the lower end of the connecting short tube (4); the lower end of the vertical shaft (7) is fixedly connected to a rotating plate (8) sleeved with the connecting short tube (4); and discharge ports (10) are provided on both sides of the rotating plate (8) and the fixed plate (9) along the central axis direction.

6. The extruder for producing plastic film according to claim 5, characterized in that: The thickness of the rotating plate (8) is greater than the thickness of the fixed plate (9).

7. The extruder for producing plastic film according to claim 1, characterized in that: The number of the stirring rods (11) is two and they are respectively located on both sides of the vertical shaft (7), and the two stirring rods (11) are arranged one high and one low.

8. The extruder for producing plastic film according to claim 7, characterized in that: The sides of the two stirring rods (11) close to the rotation direction are both configured as arc surfaces, and the upper surfaces of the two stirring rods (11) are fixedly connected to a plurality of guide vertical plates (12).

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