CN214448339U

CN214448339U - Powder conveying device and extrusion molding system

Info

Publication number: CN214448339U
Application number: CN202022980865.2U
Authority: CN
Inventors: 朱建军; 刘丹平
Original assignee: Shenzhen Jiandan Material Technology Co ltd
Current assignee: Shenzhen Jiandan Material Technology Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-10-22
Anticipated expiration: 2030-12-08

Abstract

The utility model discloses a powder conveyor and extrusion molding system belongs to plastics processing technology field. The utility model discloses a powder conveying device is including carrying the chamber, carry the chamber to be provided with pan feeding mouth and discharge gate, still set up first screw rod and second screw rod in carrying the chamber, first screw rod with the head end of second screw rod with pan feeding mouth intercommunication, first screw rod with the tail end of second screw rod with the discharge gate intercommunication, first screw rod includes first screw thread portion, first screw thread portion is provided with first circular arc portion in the both sides of axis direction, the second screw rod includes second screw thread portion, second screw thread portion is provided with second circular arc portion in axial direction's both sides. The utility model discloses a powder conveyor can effectively avoid the glutinous material of plastic powder raw materials when carrying plastic powder raw materials.

Description

Powder conveying device and extrusion molding system

Technical Field

The utility model relates to a plastics processing technology field, concretely relates to powder conveyor and extrusion molding system.

Background

The plastic extrusion is one of the important methods for thermoplastic plastics, and is characterized by that the plastic raw material is heated to make it be viscous flow state, and passed through the extrusion mould under the action of pressure to form a continuous body whose cross-section is similar to that of mould, then cooled and formed into glass state, and cut so as to obtain the plastic product with a certain geometric form and size.

The extrusion molding process mainly comprises conveying, extruding, forming, cooling and cutting. The plastic powder raw materials have certain stickness, and when the plastic powder raw materials are conveyed, the plastic powder raw materials are very easy to adhere to a conveying device and cannot be removed, and the subsequent conveying of the plastic powder raw materials can be influenced in serious cases.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the embodiment of the utility model provides a powder conveyor and extrusion molding system can effectively reduce the adhesion of plastic powder raw materials.

In order to achieve the above object, in one aspect, the embodiment of the present invention provides a powder conveying device, including conveying the chamber, conveying the chamber and being provided with pan feeding mouth and discharge gate, still set up first screw rod and second screw rod in the conveying chamber, first screw rod with the head end of second screw rod with pan feeding mouth intercommunication, first screw rod with the tail end of second screw rod with the discharge gate intercommunication, first screw rod includes first screw thread portion, first screw thread portion is provided with first circular arc portion in the both sides of axis direction, the second screw rod includes second screw thread portion, second screw thread portion is provided with second circular arc portion in axial direction's both sides.

Optionally, the first threaded portion and the second threaded portion have a preset distance in the axial direction.

Optionally, the feeding port is arranged above the first screw and the second screw.

Optionally, the conveying cavity is further provided with a material containing cavity, the top of the material containing cavity is provided with an opening, and the lower portion of the material containing cavity is communicated with the feeding port.

Optionally, the cross-sectional area of the material containing cavity is gradually reduced from top to bottom.

Optionally, the inner wall of the material containing cavity is of an inwards concave arc-shaped structure.

Optionally, a stirring component is arranged in the material containing cavity.

Optionally, the stirring part includes pivot and stirring board, the pivot level sets up, the one end of pivot is passed the wall in flourishing material chamber is connected with driver part, the other end of pivot set up in flourishing material intracavity is provided with the stirring board, the stirring board with the stirring board passes through the connecting piece and connects, the connecting piece is followed the radial direction setting of pivot, the one end of connecting piece with the pivot links to each other, the other end of connecting piece with the one end of stirring board links to each other, the unsettled setting of the other end of stirring board.

Optionally, the stirring plate is configured to be a circular arc structure bending towards the rotating shaft along a direction away from the connecting piece.

In another aspect, embodiments of the present disclosure provide an extrusion molding system including a powder delivery device as described above.

The utility model has the advantages that:

the utility model discloses a powder conveying device, including carrying the chamber, carry the chamber to be provided with pan feeding mouth and discharge gate, still set up first screw rod and second screw rod in carrying the chamber, first screw rod with second screw rod screw-thread fit, first screw rod with the head end of second screw rod with pan feeding mouth intercommunication, first screw rod with the tail end of second screw rod with the discharge gate intercommunication, first screw rod includes first screw thread portion, first screw thread portion is provided with first circular arc portion in the both sides of axis direction, the second screw rod includes second screw thread portion, second screw thread portion is provided with second circular arc portion in axial direction's both sides. The utility model discloses a powder conveying device, when carrying the plastic powder raw materials, the relative motion of scraping can be produced each other to the first circular arc portion on the first screw portion and the second circular arc portion on the second screw portion to the plastic powder raw materials that will adhere on first screw rod and second screw rod are scraped, avoid the glutinous material of plastic powder raw materials.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained without inventive exercise, wherein:

fig. 1 is a schematic structural diagram of a powder conveying device according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the first screw and the second screw in the conveying chamber;

FIG. 3 is a schematic view of the enlarged partial structure of FIG. 2;

fig. 4 is a schematic view of the internal structure of the material containing cavity according to the embodiment of the present invention.

Wherein, the corresponding relations between the reference numbers and the part names in fig. 1 to fig. 4 are as follows:

1. a delivery lumen; 2. a material containing cavity; 10. a feeding port; 11. a discharge port; 100. a first screw; 101. a first threaded portion; 102. a first arc portion; 110. a second screw; 111. a second threaded portion; 112. a second arc portion; 20. an opening; 21. a stirring section; 210. a rotating shaft; 211. a stirring plate; 212. a connecting member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The invention will be described in further detail with reference to the following drawings and embodiments:

referring to fig. 1 to 4, the embodiment of the present invention provides a powder conveying device, which mainly includes a conveying cavity 1, the conveying cavity 1 is provided with a feeding port 10 and a discharge port 11, the conveying cavity 1 is further provided with a first screw 100 and a second screw 110, the first screw 100 is in thread fit with the second screw 110, a twin-screw structure is formed, wherein the head ends of the first screw 100 and the second screw 110 are communicated with the feeding port 10, the tail ends of the first screw 100 and the second screw 110 are communicated with the discharge port 11, the first screw 100 includes a first thread portion 101, the first thread portion 101 is provided with first arc portions 102 on two sides of an axis direction, the second screw 110 includes a second thread portion 111, and the second thread portion 111 is provided with second arc portions 112 on two sides of the axis direction.

When the plastic powder conveying device works, plastic powder raw materials are fed through the feeding port 10, the first screw 100 and the second screw 110 are in screw feeding motion, the plastic powder raw materials between the first screw 100 and the second screw 110 are conveyed towards the feeding direction, and in the conveying process, the plastic powder between the first screw 100 and the second screw 110 is smashed and is conveyed to the next working procedure through the discharging port 11. Because the plastic powder has viscosity, after being extruded by the first screw 100 and the second screw 110, the plastic powder is very easily adhered to the first screw 100 and the second screw 110, in this embodiment, the first screw 100 and the second screw 110 are respectively provided with the first arc part 102 on two sides of the first thread part 101 along the axial direction, and the second arc part 112 on two sides of the second thread part 111 along the axial direction, so that the first arc part 102 and the second arc part 112 are mutually matched during working, and the plastic powder adhered to the other screw is scraped off, thereby avoiding the adhesion of the plastic powder.

Specifically, the first circular arc portion 102 covers a region from the main body of the first screw 100 to the top of the first screw thread portion 101, and the first circular arc portion 102 as a whole is in an outwardly protruding structure, and similarly, the second circular arc portion 112 covers a region from the main body of the second screw 110 to the top of the second screw thread portion 111, and the second circular arc portion 112 as a whole is in an outwardly protruding structure. The first arc part 102 and the second arc part 112 are structured, so that the plastic material adhered thereon is easier to be scraped, and the adhesion of the plastic powder raw material is effectively reduced.

According to the utility model discloses an embodiment, have predetermined interval between first screw thread portion 101 and the second screw thread portion 111, namely in the axis direction, have predetermined offset distance between first screw thread portion 101 and the second screw thread portion 111, the setting of this predetermined interval is used for when carrying plastic powder raw and other materials, screen the size of plastic raw and other materials powder, smaller size plastic powder raw and other materials can be through this predetermined interval, and the great plastic powder of size can't directly pass through this predetermined interval after the caking, need be broken its caking structure by first screw thread portion 101 and second screw thread portion 111, size after smashing can only pass through first screw 100 and second screw 110 transmission after being less than this predetermined interval. The preset distance can be determined according to the requirements of the plastic product actually processed, the precision requirement of the material and the like. It should be noted that, in operation, the first screw 100 and the second screw 110 are respectively connected with independent driving components to respectively drive the first screw 100 and the second screw 110 to move, so that when the first thread part 101 and the second thread part 111 have a preset distance therebetween, the rotation movement of the two can be ensured.

According to an embodiment of the present invention, the feeding port 10 is disposed above the first screw 100 and the second screw 110, i.e. above the head ends of the first screw 100 and the second screw 110. Correspondingly, the discharge hole 11 may be selectively disposed below the tail ends of the first screw 100 and the second screw 110, or may be selectively disposed on the axes of the first screw 100 and the second screw 110, and connected to the tail ends of the first screw 100 and the second screw 110.

According to the utility model discloses an embodiment still is provided with flourishing material chamber 2 on carrying chamber 1, and the top in flourishing material chamber 2 is provided with opening 20, and the lower part in flourishing material chamber 2 is linked together with pan feeding mouth 10. When the plastic powder raw material is supplied into the conveying chamber 1, the plastic powder raw material is placed into the material containing chamber 2, and when the first screw 100 and the second screw 110 extrude the plastic powder raw material at the head end forward, the plastic powder raw material in the material containing chamber 2 continuously supplements the head ends of the first screw 100 and the second screw 110 under the action of gravity, so that the plastic powder raw material in the conveying chamber 1 is continuously extruded.

According to the utility model discloses an embodiment, expect chamber 2 greatly from last to cross-sectional area reduce gradually down, expect chamber 2 promptly for from last to the structure that contracts gradually down to can be as much as possible provide the plastic powder raw materials at every turn, thereby reduce the number of times that supplyes plastics. Specifically, in an alternative embodiment, the material containing cavity 2 is selected to be an inwardly concave circular arc-shaped structure, so that the material containing cavity 2 has the obvious characteristics of large upper area and small lower area.

According to the utility model discloses an embodiment still is provided with stirring part 21 in flourishing material chamber 2, and stirring part 21 sets up in the upper portion of pan feeding mouth 10, and flourishing material chamber 2 is used for the plastics powder in the flourishing material chamber 2 of stirring, and it can smash the plastic material of part caking.

In a specific example, the stirring component 21 includes a rotating shaft 210 and a stirring plate 211 disposed on the rotating shaft 210, and the rotating shaft 210 is driven by a driving component (such as a motor) to rotate, so as to drive the stirring plate 211 to rotate, thereby stirring the material in the material containing cavity 2. Specifically, in this embodiment, the rotating shaft 210 is disposed parallel to the horizontal direction, the stirring plate 211 is connected to the rotating shaft 210 through a connecting member 212, the connecting member 212 extends along the radial direction of the rotating shaft 210, one end of the stirring plate 211 is connected to the connecting member 212, the other end of the stirring plate 211 is suspended, the number of the stirring plates 211 is two, two stirring plates 211 are disposed in opposite directions along the axial direction of the rotating shaft 210, and the two stirring plates 211 are symmetrically disposed with respect to the rotating shaft 210. Preferably, the stirring plate 211 is configured to be an arc structure bending towards the axis of the rotating shaft 210, and the stirring plate 211 supports the material by mainly utilizing the arc structure when rotating, so as to realize stirring.

Based on the technical scheme of above-mentioned embodiment, the embodiment of the utility model discloses the embodiment still provides an extrusion molding system, and it includes as above powder conveyor.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a powder conveying device, a serial communication port, including carrying the chamber, it is provided with pan feeding mouth and discharge gate to carry the chamber, still set up first screw rod and second screw rod in carrying the chamber, first screw rod with the head end of second screw rod with pan feeding mouth intercommunication, first screw rod with the tail end of second screw rod with the discharge gate intercommunication, first screw rod includes first screw thread portion, first screw thread portion is provided with first circular arc portion in the both sides of axis direction, the second screw rod includes second screw thread portion, second screw thread portion is provided with second circular arc portion in axial direction's both sides.

2. The powder conveying apparatus according to claim 1, wherein the first threaded portion and the second threaded portion have a predetermined interval in an axial direction.

3. The powder conveying apparatus according to claim 1, wherein the feed port is provided above the first screw and the second screw.

4. The powder conveying device according to claim 3, wherein the conveying cavity is further provided with a material containing cavity, the top of the material containing cavity is provided with an opening, and the lower part of the material containing cavity is communicated with the material inlet.

5. The powder conveying apparatus according to claim 4, wherein the material holding chamber has a cross-sectional area gradually decreasing from top to bottom.

6. The powder conveying device according to claim 5, wherein the inner wall of the material containing cavity is in a concave circular arc structure.

7. The powder conveying apparatus according to claim 4, wherein a stirring member is provided in the containing chamber.

8. The powder conveying device according to claim 7, wherein the stirring member comprises a rotating shaft and a stirring plate, the rotating shaft is horizontally arranged, one end of the rotating shaft penetrates through the wall surface of the material containing cavity and is connected with a driving member, the other end of the rotating shaft is arranged in the material containing cavity and is provided with the stirring plate, the stirring plate is connected with the stirring plate through a connecting member, the connecting member is arranged along the radial direction of the rotating shaft, one end of the connecting member is connected with the rotating shaft, the other end of the connecting member is connected with one end of the stirring plate, and the other end of the stirring plate is suspended.

9. The powder conveying apparatus according to claim 8, wherein the agitating plate is provided in a circular arc-shaped configuration curved toward the rotation axis in a direction away from the connecting member.

10. An extrusion system comprising a powder delivery device as claimed in any one of claims 1 to 9.