CN216579132U - Die plate for double-screw extruder - Google Patents
Die plate for double-screw extruder Download PDFInfo
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- CN216579132U CN216579132U CN202122870780.3U CN202122870780U CN216579132U CN 216579132 U CN216579132 U CN 216579132U CN 202122870780 U CN202122870780 U CN 202122870780U CN 216579132 U CN216579132 U CN 216579132U
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- die plate
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- screw extruder
- groove
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- 238000007599 discharging Methods 0.000 claims description 16
- 230000007704 transition Effects 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 9
- 239000002994 raw material Substances 0.000 description 7
- 230000006872 improvement Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
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Abstract
The utility model discloses a die plate for a double-screw extruder, belonging to the technical field of extruder die. The method comprises the following steps: the surface of the mouth template body is longitudinally provided with a positioning clamping groove; the runner, it sets up in positioning channel section, is equipped with a plurality of discharge openings in the runner, and the diameter of each discharge opening all is different and increases in proper order to both sides by the centre, and the interval between each discharge opening all is different and reduces in proper order to both sides by the centre. The diameters of the discharge holes of the die plate body are different and are sequentially increased from the middle to two sides, the discharge amount of the discharge holes close to two sides is increased, the distance between the discharge holes is different, the distance between the discharge holes is sequentially reduced from the middle to two sides, the density of the discharge holes close to two sides is increased, the discharge speed of each discharge hole is basically consistent through the adaptability adjustment, and subsequent operators can operate conveniently.
Description
Technical Field
The utility model belongs to the technical field of extruder dies, and particularly relates to a die plate for a double-screw extruder.
Background
In the bracing and granulating process of plastic materials, the double-screw extruder is used for mixing raw materials by the extruder, building pressure at a machine head position, discharging the plastic raw materials from a die plate of the extruder under the action of high pressure, forming, cooling and drying, and then granulating, thereby obtaining the plastic raw materials available in the next process.
The typical die plate has a great influence on the appearance of the plastic finished particles. The following are typical: 1. surface smoothness; 2. particle uniformity; 3. flatness of the tangent plane; 4. integrity of the pellets. In addition, the smooth and easy nature of mouth template to the ejection of compact also has very big influence, in case ejection of compact portion is smooth and easy, then can influence the simple operation nature of operation personnel, has still increased the material loss.
At present, the existing opening template is improved aiming at the problems, however, the improved opening template has non-uniformity in pressure between the opening template and the material storage area, so that the discharging speeds of the discharging holes at different positions are inconsistent, the discharging speed of the discharging hole generally located in the middle is the fastest, the discharging speeds of the two sides are the slowest, and further, the problem of difficult operation of an operator is caused, and the operation convenience of the operator is influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides the die plate for the double-screw extruder, which can keep the discharge speed of each discharge hole consistent.
The utility model can be realized by the following technical scheme:
a die plate for a twin screw extruder comprising:
the surface of the die plate body is longitudinally provided with a positioning clamping groove;
the runner, it set up in positioning channel section, be equipped with a plurality of discharge openings in the runner, each the diameter of discharge opening is all different and increases in proper order to both sides by the centre, and the interval between each discharge opening is all different and reduces in proper order to both sides by the centre.
As a further improvement of the utility model, the discharge hole comprises a feeding part and a discharge part, the diameter of the feeding part is reduced from one end to the other end in sequence, and the discharge part is arranged in a cylindrical structure and is connected with the small-diameter end of the feeding part.
As a further improvement of the utility model, the feeding part is provided with an arc-shaped slot
As a further improvement of the utility model, the flow channel is provided with a groove, and the side wall of the groove is provided with an inclined surface.
As a further development of the utility model, a streamlined transition is provided between the recess and the feed portion.
As a further improvement of the utility model, the die plate body is provided with a plurality of positioning holes, and the die plate body passes through the positioning holes through fasteners and is connected with an externally connected extruder head.
As a further improvement of the utility model, the side edge of the die plate body is provided with a connecting groove, and the connecting groove is used for being connected with an externally connected extruder head.
Compared with the prior art, the utility model has the following beneficial effects:
1. the diameters of the discharge holes of the die plate body are different and are sequentially increased from the middle to two sides, the discharge amount of the discharge holes close to two sides is increased, the distance between the discharge holes is different, the distance between the discharge holes is sequentially reduced from the middle to two sides, the density of the discharge holes close to two sides is increased, the discharge speed of each discharge hole is basically consistent through the adaptability adjustment, and subsequent operators can operate conveniently.
2. Whole discharge opening is hopper-shaped structure setting, and resistance when having reduced the ejection of compact has improved the smooth and easy nature when the ejection of compact from this for the raw materials goes out the strip smoothly under the pressure of extruder aircraft nose.
3. Streamlined transition between runner and the discharge opening to reduce the resistance when the raw materials flows, further increased the smooth and easy nature when the ejection of compact.
4. The whole length of the discharging part of the discharging hole is short, so that the smoothness during discharging is effectively improved, and meanwhile, the materials can be smoothly extruded into strips and smoothly output outwards in the discharging part.
5. The feeding end of the feeding portion is provided with the arc-shaped groove, and due to the arrangement of the arc-shaped groove, when the machine head material storage portion feeds the material to the feeding portion, material distribution is more uniform.
Drawings
FIG. 1 is a schematic view of the structure of a die plate for a twin-screw extruder of the present invention;
FIG. 2 is a schematic illustration of the top surface of FIG. 1 according to the present invention;
FIG. 3 is a cross-sectional view taken along A-A of FIG. 2 of the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2 of the present invention;
fig. 5 is a schematic view of the structure of the bottom surface of fig. 1 according to the present invention.
In the figure, 100, the die plate body; 110. positioning the clamping groove; 120. a flow channel; 121. a groove; 122. a bevel; 130. a discharge hole; 131. a feeding section; 1311. arc-shaped grooving; 132. a discharge part; 140. positioning holes; 150. and connecting the grooves.
Detailed Description
The following are specific embodiments of the present invention and the technical method of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-5, the present invention provides a die plate for a twin-screw extruder, comprising:
the middle part of the surface of the die plate body 100 is longitudinally provided with a positioning clamping groove 110, and the die plate body 100 can be clamped on a machine head (not shown in the figure) of the double-screw extruder through the positioning clamping groove 110, so that the die plate body 100 can be conveniently mounted and dismounted, and further the die plate body 100 and the machine head of the double-screw extruder can be conveniently cleaned and maintained.
Runner 120, it sets up in positioning channel groove 110, be equipped with a plurality of discharge openings 130 in runner 120, it is concrete, because original mouth template body 100, each discharge opening 130 that sets up on its runner 120 is equidistant to be set up, and the diameter of each discharge opening 130 keeps unanimous, and because the pressure between mouth template body 100 and the stock district has the inhomogeneity, the discharge opening 130 ejection of compact speed that leads to different positions is inconsistent, generally speaking, the discharge speed of middle discharge opening 130 is the fastest, the discharge speed of the discharge opening 130 on both sides is the slowest, the inhomogeneous problem of this kind of ejection of compact will cause the operator to operate the difficulty.
To solve the above problem, in this embodiment, adaptive adjustment is performed on the diameters of the discharge holes 130 and the distances between the discharge holes 130, specifically, the diameters of the discharge holes 130 of the die plate body 100 in this embodiment are all different and sequentially increase from the middle to both sides, and the distances between the discharge holes 130 are all different and sequentially decrease from the middle to both sides, that is, the diameter of the discharge hole 130 in the middle is the smallest, and the diameters of the discharge holes 130 on both sides are sequentially increased, so that the discharge holes 130 closer to both sides can increase the discharge amount by increasing the aperture during discharging, and meanwhile, the distances between the discharge holes 130 closer to the middle discharge hole 130 are larger, and the distances between the discharge holes 130 farther from the middle discharge hole 130 are smaller, so that the discharge holes 130 on both sides can be more dense, and the discharge amounts on both sides are further increased, and then the discharging speed of each discharging hole 130 is basically consistent through adaptive adjustment, so that the operation of subsequent operators is facilitated.
In addition, in the actual process of adaptively adjusting the aperture of the discharge holes 130 and the distance between the discharge holes 130, both the aperture and the distance are fine-tuned, for example, the aperture of two discharge holes 130 is actually different by only 1mm, so the aperture size and the distance of the discharge holes 130 are not shown in fig. 1.
Preferably, discharge opening 130 includes feed portion 131 and ejection of compact portion 132, and the diameter of feed portion 131 reduces and smooth transition in proper order by one end to the other end, and ejection of compact portion 132 is cylindrical structure setting and is connected with the minor diameter end of feed portion 131 for whole discharge opening 130 is funnel shaped structure setting, and the resistance when having reduced the ejection of compact from this has improved the smooth and easy nature during the ejection of compact, makes the raw materials go out the strip smoothly under the pressure of extruder aircraft nose.
Wherein, cylindrical ejection of compact portion 132 in this embodiment, its whole length is shorter, has improved the smooth and easy nature during the ejection of compact effectively, and can guarantee again simultaneously that the material can extrude into the strip smoothly and export outward smoothly at ejection of compact portion 132.
Preferably, the feeding end of the feeding portion 131 is provided with an arc-shaped slot 1311, and the arc-shaped slot 1311 is arranged so that the material distribution is more uniform when the head stock portion is fed to the feeding portion 131.
Preferably, the flow channel 120 is provided with a groove 121, the side wall of the groove 121 is provided with an inclined surface 122, and the groove 121 and the feeding portion 131 are in streamline transition, so that the resistance of the flowing raw materials is reduced, and the smoothness of discharging is further improved.
Preferably, the die plate body 100 is provided with a plurality of positioning holes 140, and the die plate body 100 passes through the positioning holes 140 through fasteners and is connected with an external extruder head.
Preferably, the connecting groove 150 is opened at the side of the die plate body 100, in this embodiment, the connecting groove 150 is a semicircular groove, the connecting groove 150 is used for being connected with an external extruder head, when connecting, only the screw on the extruder head needs to be connected to the semicircular groove, and then the extruder head is fixed with the die plate body 100.
The technical means disclosed by the scheme of the utility model are not limited to the technical means disclosed by the technical means, and the technical scheme also comprises the technical scheme formed by any combination of the technical characteristics. The foregoing is a detailed description of the utility model, and it should be noted that modifications and adaptations can be made by those skilled in the art without departing from the principle of the utility model, and are intended to be within the scope of the utility model.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, four, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Claims (7)
1. A die plate for a twin screw extruder, comprising:
the surface of the die plate body is longitudinally provided with a positioning clamping groove;
the runner, it set up in positioning channel section, be equipped with a plurality of discharge openings in the runner, each the diameter of discharge opening is all different and increases in proper order to both sides by the centre, and the interval between each discharge opening is all different and reduces in proper order to both sides by the centre.
2. The die plate for a twin-screw extruder as recited in claim 1, wherein the discharge hole comprises a feeding portion and a discharging portion, the diameter of the feeding portion decreases from one end to the other end, and the discharging portion is disposed in a cylindrical structure and connected to a small diameter end of the feeding portion.
3. A die plate for a twin screw extruder as claimed in claim 2, wherein the feed portion is provided with arcuate slots.
4. A die plate for a twin-screw extruder as claimed in claim 2, wherein the runner is provided with a groove, and the side wall of the groove is provided with a slope.
5. A die plate for a twin screw extruder as claimed in claim 4, wherein the groove is in streamlined transition with the feed portion.
6. The die plate for the twin-screw extruder as claimed in claim 1, wherein the die plate body is provided with a plurality of positioning holes, and the die plate body passes through the positioning holes by fasteners and is connected with an external extruder head.
7. The die plate for the double-screw extruder as claimed in claim 1, wherein the side edge of the die plate body is provided with a connecting groove, and the connecting groove is used for being connected with an external extruder head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122870780.3U CN216579132U (en) | 2021-11-19 | 2021-11-19 | Die plate for double-screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122870780.3U CN216579132U (en) | 2021-11-19 | 2021-11-19 | Die plate for double-screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216579132U true CN216579132U (en) | 2022-05-24 |
Family
ID=81646699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122870780.3U Active CN216579132U (en) | 2021-11-19 | 2021-11-19 | Die plate for double-screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216579132U (en) |
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2021
- 2021-11-19 CN CN202122870780.3U patent/CN216579132U/en active Active
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