CN217729608U

CN217729608U - Extruder screw structure in molding powder process

Info

Publication number: CN217729608U
Application number: CN202221562383.8U
Authority: CN
Inventors: 张利民
Original assignee: Shaoxing Yingna Powder Coating Co ltd
Current assignee: Shaoxing Yingna Powder Coating Co ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-11-04
Anticipated expiration: 2032-06-21

Abstract

The utility model discloses an extruder screw rod structure in moulding powder technology, the utility model discloses set up the screw rod of meshing, rectangle screw thread and the screw thread that fine thread combination formed the screw rod for the screw rod fully mills the dispersion to the material, and various can melt the material and obtain abundant melting and mix, make the material that can not melt obtain the intensive dispersion and by melting the mixture and surround, improve the mixed effect of milling of extruder.

Description

Extruder screw structure in molding powder process

Technical Field

The utility model belongs to the technical field of the extruder, concretely relates to mould extruder screw structure in powder technology.

Background

The screw extruder depends on the pressure and the shearing force generated by the rotation of the screw, so that materials can be fully plasticized, uniformly mixed and extruded for molding. The material is conveyed, melted and mixed in the screw barrel through the screws rotating in the same direction and tightly meshed, and when the material is extruded out of the screw barrel, the solid state is changed into a fine mixed colloid soft state.

In the prior art, a screw is adopted to stir and melt materials, but the mixing effect of the screw on the materials is limited, so that the screw structure of the extruder in the molding powder process is provided.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solves the above-mentioned technical problem that exists among the prior art, provides an extruder screw rod structure among plastic powder technology, through setting up a plurality of screw rods, through the meshing of screw rod, the screw thread adopts two kinds of screw threads, grinds the dispersion to the material, promotes the mixed melting effect of material.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a mould extruder screw structure in powder technology includes: the screws are meshed with each other and act on the material together; the screw comprises threads, and the threads comprise rectangular threads and fine threads. The intermeshing screws allow the various meltable materials to be thoroughly mixed and the non-meltable materials to be thoroughly dispersed and surrounded by the molten mixture. The rectangular thread mainly plays the effect of preliminary mixture, and the rectangular thread is bigger to the area power of material, is favorable to the mixture of different materials, and fine tooth screw thread can play the effect of milling, helps the dispersion of material.

Further, the screw rod is provided with a screw barrel, the screw barrel comprises an upper box body and a lower box body, the upper box body is provided with a first groove, the lower box body is provided with a second groove, and the upper box body and the lower box body are spliced, so that the first groove and the second groove form a cavity with an infinite-shaped cross section. The cavity of the shape enables the screws to be close to each other, keeps a meshed state and avoids generating opposite acting force when the screws rotate together.

Further, the upper box body is provided with a feeding port. The upper box body is provided with a feeding port, the feeding port is provided with a hopper, and materials can enter the screw cylinder along the hopper by gravity.

Further, the upper box body is provided with a first connecting hole, the lower box body is provided with a second connecting hole, when the first connecting hole and the second connecting hole are aligned, the bolt penetrates through the first connecting hole and the second connecting hole, and the bolt is combined with the nut, so that the upper box body is connected with the lower box body. Through this mode, with last box and lower box fixed connection.

Further, the screw cylinder is provided with an end cover, the end cover is provided with a through hole, the through hole is infinity-shaped, and the infinity-shaped through hole enables the screws to approach each other for meshing. The melted materials move along the screw and are discharged from the through hole.

Further, the heaters are arranged on the upper side and the lower side of the screw rod. The materials are heated uniformly by the upper and lower arrangement.

Furthermore, the heater is provided with a plurality of temperature sections, and the temperature of the adjacent temperature sections is increased progressively. The material is in a gradually molten state along with the pushing of the screw, and the material is fully molten through the arrangement of the gradually increasing temperature sections.

Further, the screw rod is equipped with the sleeve, and the tip is equipped with first arch, and first arch sets up along screw rod circumference, forms the caulking groove between the first arch, and the sleeve inboard is equipped with the second arch that matches the caulking groove for sleeve embedding screw rod tip. When the sleeve is rotated, the friction force between the sleeve and the screw is increased by the arrangement of the second protrusions and the caulking grooves, and the rotation of the screw cannot be hindered by slipping in the rotating process.

The utility model discloses owing to adopted above-mentioned technical scheme, following beneficial effect has:

the utility model discloses set up the screw rod of meshing, rectangle screw thread and the screw thread of fine tooth thread combination formation screw rod for the screw rod fully mills the dispersion to the material, and various can melt the material and obtain abundant melt and mix, make the material that can not melt obtain the intensive dispersion and is melted the mixture and surround, improve the mixed effect of milling of extruder.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

FIG. 1 is a schematic view of the present invention;

fig. 2 is a use view of the present invention.

In the figure, 1-upper box; 2, a box body is arranged; 3-a first groove; 4-a second groove; 5-feeding port; 6-a first connection hole; 7-a second connection hole; 8-a first protrusion; 9-caulking groove; 10-a sleeve; 11-a heater; 12-an end cap; 13-a through hole; 14-a screw; 15-hopper.

Detailed Description

As shown in fig. 1 to fig. 2, it is that the utility model relates to an extruder screw rod structure in molding powder technology, include: the screw rods 14 are meshed with each other, and act on the materials together; the screw 14 includes threads including rectangular threads and fine-pitch threads. The intermeshing screw 14 provides for sufficient mixing of the various meltable materials and for sufficient dispersion and surrounding of the non-meltable materials with the molten mixture. The rectangular thread mainly plays the effect of preliminary mixing, and the rectangular thread is bigger to the area power of material, is favorable to the mixture of different materials, and fine thread can play the effect of milling, helps the dispersion of material.

The screw 14 includes threads including rectangular threads and fine-pitch threads. The rectangular thread mainly plays the effect of preliminary mixture, and the rectangular thread is bigger to the area power of material, is favorable to the mixture of different materials, and fine tooth screw thread can play the effect of milling, helps the dispersion of material.

The screw 14 is provided with a screw barrel, the screw barrel comprises an upper box body 1 and a lower box body 2, the upper box body 1 is provided with a first groove 3, the lower box body 2 is provided with a second groove 4, and the upper box body 1 and the lower box body 2 are spliced, so that the first groove 3 and the second groove 4 form a cavity with an infinite-shaped section. The shaped cavity allows the screws 14 to be held in engagement with one another to avoid opposing forces during co-rotation.

The upper box body 1 is provided with a feeding port 5. The upper box body 1 is provided with a feeding port 5, a hopper 15 is arranged at the feeding port 5, and materials can enter the screw barrel along the hopper 15 by using gravity.

Go up box 1 and be equipped with first connecting hole 6, lower box 2 is equipped with second connecting hole 7, and when first connecting hole 6 and second connecting hole 7 counterpoint, the bolt passes first connecting hole 6 and second connecting hole 7, and the bolt combines the nut for go up box 1 and lower box 2 and connect. In this way, the upper case 1 and the lower case 2 are fixedly connected.

And the heaters 11 are arranged on the upper side and the lower side of the screw 14. The materials are heated uniformly by the upper and lower arrangement.

The heater 11 is provided with a plurality of temperature sections, and the temperature of the adjacent temperature sections is increased progressively. The heater 11 adopts a plurality of hot plates, and the temperature of adjacent hot plate is the form that increases progressively, and along with the promotion of screw 14, the material is the state of melting gradually, makes the material fully melt through the setting of different temperature sections.

The screw 14 is provided with a sleeve 10, the end part of the screw is provided with a first bulge 8, the first bulge 8 is arranged along the circumferential direction of the screw 14, an embedding groove 9 is formed between the first bulges 8, and a second bulge matched with the embedding groove 9 is arranged on the inner side of the sleeve 10, so that the sleeve 10 is embedded into the end part of the screw 14. The second protrusions and the grooves 9 increase the friction between the sleeve 10 and the screw 14 when the sleeve 10 is rotated, and the rotation of the screw 14 is not hindered by slipping during the rotation.

The screw cylinder is provided with an end cap 12, the end cap 12 is provided with a through hole 13, the through hole 13 is shaped like a ∞ and the screw rods 14 are engaged by approaching each other by the ∞ shaped through hole. The melted material moves along the screw 14 and is discharged from the through hole 13.

The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve the same technical problems and achieve the same technical effects are all covered by the protection scope of the present invention.

Claims

1. A mould extruder screw structure in powder technology includes: screw rod and spiral shell section of thick bamboo, its characterized in that: the screws are meshed with each other and act on the materials together; the screw comprises threads, and the threads comprise rectangular threads and fine threads; the screw rod is equipped with a screw section of thick bamboo, the screw section of thick bamboo includes box and lower box, it is equipped with first recess to go up the box, the box is equipped with the second recess down, go up the box with the concatenation of lower box makes first recess with the second recess forms the cavity that the cross-section is "∞" shape.

2. The screw structure of the extruder in the molding powder process according to claim 1, wherein: the upper box body is provided with a feeding port.

3. The screw structure of the extruder in the molding powder process according to claim 1, wherein: the upper box body is provided with a first connecting hole, the lower box body is provided with a second connecting hole, when the first connecting hole is aligned with the second connecting hole, a bolt penetrates through the first connecting hole and the second connecting hole, and the bolt is combined with a nut, so that the upper box body is connected with the lower box body.

4. The screw structure of the extruder in the molding powder process according to claim 1, wherein: the screw barrel is provided with an end cover, the end cover is provided with a through hole, and the through hole is shaped like an infinity.

5. A molding powder process extruder screw structure according to claim 1, further comprising: and the heaters are arranged on the upper side and the lower side of the screw rod.

6. The screw structure of the extruder in the molding powder process according to claim 5, wherein: the heater is provided with a plurality of temperature sections, and the temperature of the adjacent temperature sections is increased progressively.

7. The screw structure of the extruder in the molding powder process according to claim 1, wherein: the screw rod is equipped with the sleeve, and the tip is equipped with first arch, first arch along screw rod circumference sets up, form the caulking groove between the first arch, the sleeve inboard is equipped with the matching the second of caulking groove is protruding, makes the sleeve embedding the screw rod tip.