CN214395349U - Wear-resisting and effectual screw rod of mixing - Google Patents
Wear-resisting and effectual screw rod of mixing Download PDFInfo
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- CN214395349U CN214395349U CN202023233436.5U CN202023233436U CN214395349U CN 214395349 U CN214395349 U CN 214395349U CN 202023233436 U CN202023233436 U CN 202023233436U CN 214395349 U CN214395349 U CN 214395349U
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Abstract
The utility model discloses a wear-resistant screw with good mixing effect, which comprises a screw main body, wherein the screw main body is sequentially provided with a connecting section, a first feeding section, a second feeding section, a third feeding section and a mixing section; the connecting section, the first feeding section, the second feeding section, the third feeding section and the mixing section are all provided with core columns; the core columns of the first feeding section, the second feeding section and the third feeding section are all provided with single threads in a spiral mode; a screw mixing groove is formed in the core column of the mixing section; the connecting section is provided with a handle part and a step part; and chromium layers are arranged on the outer surfaces of the core columns of the first feeding section, the second feeding section, the third feeding section and the mixing section and the outer surface of the step part of the connecting section. So, through the ingenious design to the screw rod and set up the chromium layer at the surface of the stem of the first feeding section of screw rod main part, second feeding section, third feeding section, mixing section and the step portion surface of linkage segment and improve the wearability of screw rod, simultaneously, its corrosion resistance is also better.
Description
Technical Field
The utility model relates to an extruder screw rod field technique especially indicates a wear-resisting and mixing effectual screw rod.
Background
The screw is a key part widely used in various plastic extruders, rubber extruders, resin extruders, injection molding machines and the like. However, the existing screws still have some disadvantages, such as: 1. the wear resistance is poor, the abrasion is easy to occur in the working process, and the service life of the screw rod is short; 2. the screw rod is not good enough to the homogenization effect of raw materials, leads to, when giving as security out, the shaping effect of product is unstable.
Therefore, a new technical solution is needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a wear-resistant screw with good mixing effect, which has a chromium layer on the outer surface of the core column of the first feeding section, the second feeding section, the third feeding section and the mixing section of the screw body and the outer surface of the step portion of the connecting section to improve the wear resistance of the screw, and has better corrosion resistance.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a wear-resistant screw with good mixing effect comprises a screw main body, wherein a connecting section, a first feeding section, a second feeding section, a third feeding section and a mixing section are sequentially arranged on the screw main body; the connecting section, the first feeding section, the second feeding section, the third feeding section and the mixing section are all provided with core columns; wherein:
the core columns of the first feeding section, the second feeding section and the third feeding section are all provided with single threads in a spiral mode; a screw mixing groove is formed in the core column of the mixing section; the connecting section is provided with a handle part and a step part;
and chromium layers are arranged on the outer surfaces of the core columns of the first feeding section, the second feeding section, the third feeding section and the mixing section and the outer surface of the step part of the connecting section.
Preferably, the bottom diameter of the core column of the second feeding section is gradually increased from right to left, and the bottom diameter of the core column of the third feeding section is in a wavy change.
As a preferred scheme, be provided with first groove of smelting the spiral shell, the second groove of smelting the spiral shell on the stem of mixing section, first groove of smelting the spiral shell, the second groove of smelting the spiral shell all is the tongue, and all has tongue point portion and tongue afterbody, first groove of smelting the spiral shell, the tongue point portion of the second groove of smelting the spiral shell sets up relatively.
Preferably, the first mixing screw groove and the second mixing screw groove are provided in plurality, and the first mixing screw groove and the second mixing screw groove are arranged on the outer peripheral surface of the core column of the mixing section at a crossing distance.
Preferably, the first mixing groove and the second mixing groove are obliquely arranged on a core column of the mixing section.
As a preferred scheme, a pin structure is further arranged on a core column of the mixing section and is arranged on the left side of the first mixing groove and the left side of the second mixing groove.
Preferably, the pin structure comprises a plurality of pin groups, each pin group comprises a plurality of pins; the pins of each group are arranged from right to left and are gradually heightened, and the central connecting line of each group of pins and the transverse central line of the first screw refining groove/the second screw refining groove at the corresponding position are on the same straight line.
Preferably, the chromium layer is arranged on the outer surfaces of the core columns of the first feeding section, the second feeding section, the third feeding section and the mixing section and the outer surface of the step part of the connecting section through electroplating treatment.
Preferably, the pitch of the single thread on the core column of the second feeding section is smaller than that of the single thread on the core column of the third feeding section.
Compared with the prior art, the utility model has obvious advantages and beneficial effects, concretely speaking, according to the technical scheme, chromium layers are arranged on the outer surfaces of the core columns of the first feeding section, the second feeding section, the third feeding section and the mixing section of the screw main body and the outer surface of the step part of the connecting section to improve the wear resistance of the screw, and simultaneously, the corrosion resistance of the screw is better;
secondly, the screw refining groove is arranged to improve the homogenization effect of the screw on the raw materials and improve the homogenization efficiency of the screw; moreover, the screw refining groove is skillfully arranged, so that the raw materials can be homogenized for many times;
and thirdly, the bottom diameter of the core column of the third feeding section is changed in a wavy manner, and a pin is arranged at the left end of the screw refining groove, so that the raw materials can be turned up and down, and the homogenization efficiency of the screw is further improved.
To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken at B-B of FIG. 1;
FIG. 4 is a cross-sectional view at C-C of FIG. 1;
FIG. 5 is an enlarged view of a portion of FIG. 1 at I;
FIG. 6 is a cross-sectional view of a mixing head according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view taken at G-G of FIG. 6;
FIG. 8 is an expanded view of a kneading head according to an embodiment of the present invention;
fig. 9 is a sectional view at P-P of fig. 8.
The attached drawings indicate the following:
10. connecting section 20, first feeding section
30. A second feeding section 40 and a third feeding section
50. Mixing section 51, first mixing screw groove
52. Second groove 53, pin.
Detailed Description
Fig. 1 to 9 show specific structures of embodiments of the present invention.
A wear-resistant screw with good mixing effect comprises a screw main body, wherein a connecting section 10, a first feeding section 20, a second feeding section 30, a third feeding section 40 and a mixing section 50 are sequentially arranged on the screw main body; the connecting section 10, the first feeding section 20, the second feeding section 30, the third feeding section 40 and the mixing section 50 are all provided with core columns; wherein:
the core columns of the first feeding section 20, the second feeding section 30 and the third feeding section 40 are all provided with single threads in a spiral manner; a screw mixing groove is formed in the core column of the mixing section 50; the connecting section 10 has a shank and a step;
and chromium layers are arranged on the outer surfaces of the core columns of the first feeding section 20, the second feeding section 30, the third feeding section 40 and the mixing section 50 and the outer surface of the step part of the connecting section 10.
Preferably, the core column of the first feeding section 20 is the smallest section of the connecting section 10, the second feeding section 30, the third feeding section 30, the fourth feeding section 40 and the middle mixing section 50, and the outer diameter (bottom diameter) thereof is kept constant, the bottom diameter of the core column of the second feeding section 30 is gradually increased from right to left, and the bottom diameter of the core column of the third feeding section 40 is changed in a wave shape. Here, reference is made to fig. 1.
With further reference to fig. 6 to 8, a first mixing groove 51 and a second mixing groove 52 are disposed on a core column of the mixing section 50, the first mixing groove 51 and the second mixing groove 52 are both tongue-shaped and have a tongue tip portion and a tongue tail portion, and the tongue tip portions of the first mixing groove 51 and the second mixing groove 52 are disposed oppositely. Therefore, when the plastic in a molten state enters from the tail part of the tongue and leaves from the tip part of the tongue, the tip part of the tongue is oppositely arranged, so that the plastic can be repeatedly mixed, and the homogenization effect is improved.
Specifically, the first mixing groove 51 and the second mixing groove 52 are provided in plurality, and intersect each other and are arranged on the outer peripheral surface of the core of the mixing section 50 at equal intervals, that is, on the core at equal intervals in the normal direction.
Preferably, the first mixing screw groove 51 and the second mixing screw groove 52 are obliquely arranged on a core column of the mixing section 50; specifically, the inclined center lines of the first and second wire flights 51, 52 (specifically, the center lines in the length direction of the first and second wire flights 51, 52) and the axis of the core are arranged at an angle, which is usually selected from angles other than 90 degrees and 180 degrees. As shown in fig. 9, the circumferential surfaces of the first screw groove 51/the second screw groove 52 and the core column have arc transition sections, and the plastic can smoothly flow in and out from the first screw groove 51/the second screw groove 52 by the arrangement of the arc transition sections, thereby improving the homogenization effect of the plastic.
Preferably, a pin 53 structure is further arranged on the core column of the mixing section 50, and the pin 53 structure is arranged on the left side of the first mixing screw groove 51 and the second mixing screw groove 52; the homogenization effect of the screw can be further improved by the arrangement of the structure of the pin 53, which is prior art and not described in detail herein.
Specifically, referring to fig. 8, the pin 53 structure includes a plurality of sets of pins 53, each set of pins 53 having a plurality of pins 53; the pins 53 in each group are arranged from right to left and are gradually higher, and the central connecting line of each group of pins 53 and the transverse central line of the first screw refining groove 51 or the second screw refining groove 52 in the corresponding position are on the same straight line; when the molten compound flows from the first/ second screw 51, 52, it is effectively in contact with the pin 53, increasing the homogenization.
During production, the chromium layers are arranged on the outer surfaces of the core columns of the first feeding section 20, the second feeding section 30, the third feeding section 40 and the mixing section 50 and the outer surface of the step part of the connecting section 10 in an electroplating processing mode. The wear resistance of the screw can be effectively improved through electroplating the chromium layer, and the service life of the screw is prolonged.
Preferably, the pitch of the single thread on the stem of the second feeding segment 30 is smaller than the pitch of the single thread on the stem of the third feeding segment 40. So that the forward advancing speed of the plastic in the molten state is different, and the homogenizing effect is improved.
Further, during manufacturing, the screw body is usually subjected to quenching and tempering, so that the hardness of the screw body is kept between 31 and 35HRC to meet the working requirement.
The utility model has the design key point that chromium layers are arranged on the outer surfaces of the core columns of the first feeding section, the second feeding section, the third feeding section and the mixing section of the screw main body and the outer surface of the step part of the connecting section to improve the wear resistance of the screw, and simultaneously, the corrosion resistance of the screw is better;
secondly, the screw refining groove is arranged to improve the homogenization effect of the screw on the raw materials and improve the homogenization efficiency of the screw; moreover, the screw refining groove is skillfully arranged, so that the raw materials can be homogenized for many times;
and thirdly, the bottom diameter of the core column of the third feeding section is changed in a wavy manner, and a pin is arranged at the left end of the screw refining groove, so that the raw materials can be turned up and down, and the homogenization efficiency of the screw is further improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a wear-resisting and effectual screw rod of mixing which characterized in that: the screw comprises a screw main body, wherein a connecting section, a first feeding section, a second feeding section, a third feeding section and a mixing section are sequentially arranged on the screw main body; the connecting section, the first feeding section, the second feeding section, the third feeding section and the mixing section are all provided with core columns; wherein:
the core columns of the first feeding section, the second feeding section and the third feeding section are all provided with single threads in a spiral mode; a screw mixing groove is formed in the core column of the mixing section; the connecting section is provided with a handle part and a step part;
and chromium layers are arranged on the outer surfaces of the core columns of the first feeding section, the second feeding section, the third feeding section and the mixing section and the outer surface of the step part of the connecting section.
2. The screw rod of claim 1, which is wear-resistant and has good mixing effect, and is characterized in that: be provided with the first spiral shell groove of smelting, the second on the stem of mixing section and smelt the spiral shell groove, the first spiral shell groove of smelting, the second is smelted the spiral shell groove and all is the tongue, and all has tongue point portion and tongue afterbody, the first spiral shell groove of smelting, the second is smelted the relative setting of tongue point portion in spiral shell groove.
3. The screw rod of claim 2, which is wear-resistant and has good mixing effect, and is characterized in that: the first mixing groove and the second mixing groove are provided with a plurality of screw grooves, and the screw grooves and the second mixing groove are arranged on the outer peripheral surface of the core column of the mixing section at a crossed interval.
4. The screw rod of claim 2, which is wear-resistant and has good mixing effect, and is characterized in that: and the first screw refining groove and the second screw refining groove are obliquely arranged on the core column of the mixing section.
5. The screw rod of claim 2, which is wear-resistant and has good mixing effect, and is characterized in that: still be provided with the pin structure on the stem of mixing section, the pin structure sets up in the first left side of smelting the spiral shell groove, the second of smelting the spiral shell groove.
6. A screw rod of claim 5 with wear resistance and good mixing effect, which is characterized in that: the pin structure comprises a plurality of pin groups, and each pin group is provided with a plurality of pins; the pins of each group are arranged from right to left and are gradually heightened, and the central connecting line of each group of pins and the transverse central line of the first screw refining groove/the second screw refining groove at the corresponding position are on the same straight line.
7. The screw rod of claim 1, which is wear-resistant and has good mixing effect, and is characterized in that: the chromium layer is arranged on the outer surfaces of the core columns of the first feeding section, the second feeding section, the third feeding section and the mixing section and the outer surfaces of the step parts of the connecting sections through electroplating treatment.
8. The screw rod of claim 1, which is wear-resistant and has good mixing effect, and is characterized in that: the screw pitch of the single thread on the second feeding section core column is smaller than that of the single thread on the third feeding section core column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023233436.5U CN214395349U (en) | 2020-12-29 | 2020-12-29 | Wear-resisting and effectual screw rod of mixing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023233436.5U CN214395349U (en) | 2020-12-29 | 2020-12-29 | Wear-resisting and effectual screw rod of mixing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214395349U true CN214395349U (en) | 2021-10-15 |
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ID=78041932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023233436.5U Active CN214395349U (en) | 2020-12-29 | 2020-12-29 | Wear-resisting and effectual screw rod of mixing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214395349U (en) |
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2020
- 2020-12-29 CN CN202023233436.5U patent/CN214395349U/en active Active
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