CN205310760U - Powder coating extruder screw rod - Google Patents

Abstract

The utility model discloses a powder paint extruder screw, which comprises a conveying section, a feeding section, a shearing section and a discharging section. The shear section includes a transition section and a mixing section. The transition section includes several first scissors, and the mixing section includes several second scissors. Each of the first scissors has the same shape and size as each of the second scissors, and the center points of several of the first scissors and several of the second scissors are on the same straight line; every 2 The first scissors are one group; every three second scissors are one group. The feeding section includes a screw thread, which is helical, and the screw thread is inclined to the center point of the screw of the powder coating extruder. In the powder coating extruder screw provided by the utility model, the screw thread is inclined to the center point of the powder coating extruder screw, which is convenient for quickly pushing the raw materials inward and speeding up the transportation, and the length of the feeding section is the 1.5 times the length of the shear section, the feeding rate is greatly increased.

Description

powder coating extruder screw

technical field

The utility model relates to the field of powder paint processing machinery, in particular to the field of screw rods of powder paint extruders.

Background technique

Powder coating is processed from raw materials such as resin, curing agent, additives and pigments. It is solidified by powder spraying and contains almost no volatile matter. high.

In the patent No. CN201520231768.X, a screw of a twin-screw powder coating extruder is provided. This screw includes a conveying section, a feeding section, and a shearing section. The shearing section is divided into three sections, namely, the front shearing section. Cut, Mid-Cut, and Post-Cut. But the length of the feed section on this screw is less than the shear section, and in the prior art, the length of the general feed section is less than or approximately equal to the length of the shear section, and the thread of the transport section is a common thread, not With an angle of inclination, this kind of screw usually has an average conveying speed, which is insufficient.

Utility model content

In order to solve the above problems, the utility model provides a powder coating extruder screw, which is characterized in that it includes a conveying section 1, a feeding section 2, and a shearing section;

The shear section includes a transition section 3 and a mixing section 4;

The transition section 3 includes several first scissors, and the mixing section 4 includes several second scissors; each of the first scissors has the same shape and size as each of the second scissors, and several The center points of the first scissors and several of the second scissors are on the same straight line; every two first scissors form a group, and two adjacent first scissors There is a 90° stagger between them; every 3 said second scissors form a group, and 60° staggers between the adjacent 2 said first scissors; said feeding section 2 includes threads and is helical , and the screw thread is inclined to the center point of the powder coating extruder screw; the arrangement among the four paragraphs is the conveying section 1, the feeding section 2, the transition section 3, and the mixing section 4.

Preferably, the length of the feeding section 2 is greater than that of the shearing section, so as to speed up its conveying rate.

Preferably, the length of the feeding section 2 is 1.5 times the length of the shearing section.

Preferably, the number of the first scissors is 2-24.

Preferably, the number of the second scissors is 3-24.

Preferably, the number of the first scissors is the same as that of the second scissors.

Preferably, a discharge section 5 is also included, the transition section 3 is located between the mixing section 4 and the discharge section 5, and the discharge section 5 is in a spiral shape.

In the powder coating extruder screw provided by the utility model, the screw thread is inclined to the center point of the powder coating extruder screw, which is convenient for quickly pushing the raw material inward and speeding up the transportation, and the length of the feeding section 2 is 1.5 times the length of the above-mentioned shearing section, the feeding rate is greatly increased. The number of the first scissors is the same as that of the second scissors, which makes the powder coating extruder screw beautiful and practical; the transition section 3 is a transition zone for conveying and grinding the raw material particles, while conveying While crushing the raw material particles into small particles; the mixing section 4 is used for final fine grinding of the raw material particles to form the final product; the discharge section 5 is to assist the powder coating extruder screw to smoothly Drain paint powder.

Description of drawings

Figure 1 is a schematic diagram of the powder coating extruder screw.

detailed description

A powder coating extruder screw as shown in FIG. 1 includes a conveying section 1, a feeding section 2, a shearing section, and a discharging section 5.

The shearing section includes a transition section 3 and a mixing section 4 .

The transition section 3 includes 18 first scissors, and the mixing section 4 includes 18 second scissors; each of the first scissors has the same shape and size as each of the second scissors, and 18 The center points of the first scissors and the 18 second scissors are on the same straight line; every two first scissors form a group, that is, there are 9 groups of the first scissors in total, and the corresponding The two adjacent first scissors are staggered by 90°; every three second scissors form a group, that is, there are 6 groups of second scissors in total, and the adjacent two said The first scissor teeth are staggered by 60°; the feeding section 2 includes a thread, which is helical, and the thread is inclined to the center point of the powder coating extruder screw; the arrangement among the five paragraphs is sequentially The conveying section 1, the feeding section 2, the transition section 3, the mixing and discharging section 5. The transition section 3 is located between the mixing section 4 and the discharge section 5, and the discharge section 5 is in a spiral shape.

The length of the feeding section 2 is 1.5 times the length of the shearing section.

The first scissors and the second scissors adjacent to the transition section 3 and the kneading section 4 are staggered by 60°.

The above are only preferred embodiments of the utility model, so the scope of implementation of the utility model cannot be limited accordingly, that is, equivalent changes and decorations made according to the description of the utility model should all fall within the scope covered by the utility model.

Claims (7)

1. a powder coating extruder screw rod, it is characterised in that comprise delivery section, feeding section, shear section;

Described shearing section comprises transition section, mixing section;

Described transition section comprises some first and cuts tooth, and described mixing section comprises some the 2nd and cuts tooth; Described in each, first cuts tooth to cut tooth shape size with the described in each the 2nd identical, and some described first are cut tooth, some described 2nd central points cutting tooth are located along the same line; Every 2 described first to cut tooth be one group, and first described in adjacent 2 cut and stagger in 90 ° between tooth;Every 3 the described 2nd to cut tooth be one group, and adjacent 2 described first are cut and stagger in 60 ° between tooth; Described feeding section comprises screw thread, and in the shape of a spiral, and described screw thread tilts to the central point of powder coating extruder screw rod; Arrangement between four paragraphs is followed successively by described delivery section, described feeding section, described transition section, described mixing section in proper order.

2. according to the powder coating extruder screw rod described in claim 1, it is characterised in that the length of described feeding section is greater than the length of described shearing section.

3. according to the powder coating extruder screw rod described in claim 2, it is characterised in that the length of described feeding section is 1.5 times of described shearing segment length.

4. according to the powder coating extruder screw rod described in claim 1, it is characterised in that described first to cut number of teeth amount be 2-24.

5. according to the powder coating extruder screw rod described in claim 1, it is characterised in that the described 2nd to cut the quantity of tooth be 3-24.

6. according to the powder coating extruder screw rod described in claim 1, it is characterised in that described first cuts number of teeth amount, and to cut number of teeth amount with the described 2nd identical.

7., according to the powder coating extruder screw rod described in claim 1, it is characterised in that also comprise discharge zone, described transition section is between mixing section and described discharge zone, and described discharge zone is in the shape of a spiral.