CN217993452U - Die structure and granulator - Google Patents
Die structure and granulator Download PDFInfo
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- CN217993452U CN217993452U CN202221840819.5U CN202221840819U CN217993452U CN 217993452 U CN217993452 U CN 217993452U CN 202221840819 U CN202221840819 U CN 202221840819U CN 217993452 U CN217993452 U CN 217993452U
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- flow channel
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Abstract
The utility model discloses a die structure and a granulator, which comprises a mounting seat and a die core; the die core comprises a die body and an extrusion part; a flow channel for material circulation is formed in the die body, the flow channel extends along the central axial direction of the die body, and the flow channel comprises a first feed port, a first flow channel and a second flow channel which are sequentially communicated; the flow channel is integrally and gradually reduced along the direction from the first feeding hole to the second flow channel, and the first opening angle of the first flow channel is larger than the second opening angle of the second flow channel; the extrusion part is extended from one end of the die body close to the second runner to form, and a first discharge hole for extruding the material is formed in the extrusion part and connected with the die body, so that the extrusion pressure can be optimized, the extruded material surface is smooth and has no air holes, and the adhesion of moisture is reduced.
Description
Technical Field
The utility model relates to a granulator technical field, in particular to mould structure and granulator.
Background
Pelletizers are widely used in the plastic industry and are well known. The head is one of the main components of the granulator, a forming die is arranged in the head, and the head is used for uniformly and stably guiding moving materials into the die sleeve and endowing the materials with necessary forming pressure.
The mould structure influences the vital importance to the extrusion pressure of material, and different mould structures can influence the extrusion force that the material received in the mould is inside, and then influences the quality of extruding the material, and extrusion pressure is not enough, and the material strip surface that leads to coming out is rough, through crossing water tank cooling back, adsorbs moisture easily, and then moisture content is big in the granule material that leads to behind the blank, and easy agglomeration influences the quality of granulation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a mould structure and granulator aims at extruding pressure through optimizing for the smooth pore-free in material surface that extrudes reduces moisture and adheres to.
In order to achieve the above object, the utility model provides a mold structure includes:
a mounting base;
the die core is arranged in the mounting seat and comprises a die body and an extrusion part;
a runner for material circulation is formed in the die body, the runner extends along the length direction of the die body, and the runner comprises a first feed inlet, a first runner and a second runner which are sequentially communicated; the flow channel is integrally and gradually reduced along the direction from the first feeding hole to the second flow channel; a first opening angle of the first flow channel is larger than a second opening angle of the second flow channel;
the extrusion part is formed by extending one end, close to the second runner, of the die body, a first discharge hole for extruding materials is formed in the extrusion part, and the first discharge hole is communicated with the die body.
Optionally, the first opening angle of the first flow channel is 35 ° to 60 °.
Optionally, the second opening angle of the second flow channel is 10 ° to 25 °.
Optionally, the first flow passage and the second flow passage are integrally conical or trapezoidal.
Optionally, a cavity capable of accommodating the mold core is formed in the mounting seat, a second feeding hole and a second discharging hole are formed in the mounting seat, the second feeding hole is communicated with the first feeding hole, and the second discharging hole is communicated with the first discharging hole.
Optionally, the first discharging hole extends and lengthens to form a shaping flow channel.
Optionally, the shaping runners are multiple and are arranged on the extrusion part at intervals.
Optionally, the number of the second discharge holes is multiple, the multiple second discharge holes are arranged on the mounting seat at intervals, and each first discharge hole and each second discharge hole are coaxially arranged.
Optionally, the diameter of the first discharging hole is smaller than the diameter of the second discharging hole.
The utility model discloses still provide a granulator, the granulator includes as above arbitrary the mould structure, mount pad fixed connection in on the aircraft nose of granulator.
The utility model discloses set up the first runner and the second runner that communicate in proper order in the mould body of mould structure, the runner wholly diminishes gradually along the direction of first feed inlet to second runner on, and the first opening angle of first runner is greater than the second opening angle of second runner, and this can optimize extrusion pressure for the smooth pore-free in material surface that extrudes, reduction moisture adheres to.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is an exploded schematic view of an embodiment of the mold structure of the present invention;
FIG. 2 is a longitudinal cross-sectional view of the mold structure of FIG. 1;
FIG. 3 is a schematic view of a first opening angle and a second opening angle in a longitudinal cross-sectional view of the mold structure shown in FIG. 2.
The reference numbers indicate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; 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 meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Furthermore, descriptions in the present application as to "first," "second," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments 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 to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 3, the mold structure of the present invention includes a mounting base 100 and a mold core 200, wherein the mold core 200 is disposed in the mounting base 100 and includes a mold body 210 and an extrusion portion 220; a runner for material circulation is formed in the die body 210, the runner extends along the length direction of the die body 210, and the runner comprises a first feed port 211, a first runner 212 and a second runner 213 which are sequentially communicated; the flow channel is gradually reduced along the direction from the first feed port 211 to the second flow channel 213; the first opening angle of the first flow channel 212 is larger than the second opening angle of the second flow channel 213; the extrusion part 220 is formed by extending from one end of the die body 210 close to the second flow channel 213, a first discharge hole 221 for extruding the material is formed in the extrusion part 220, and the first discharge hole 221 is communicated with the die body 210.
As is well known to those skilled in the art, a pelletizer is a device capable of manufacturing materials into specific shapes, and includes a die structure 10, and further includes a squeezing assembly (not shown), which may be a twin screw extruder or a single screw extruder, and a cutting assembly, wherein in operation, the materials extruded through the squeezing assembly enter the die structure 10 from a head, are discharged through a first discharge hole 221 of the die structure 10, and are cooled and cut by the cutting assembly to form desired plastic pellets.
In this embodiment, the mold structure 10 includes a mounting base 100 and a mold core 200, the mounting base 100 is fixedly mounted on a machine head of a pelletizer, fixing holes 130 are formed on the periphery of the mounting base 100, and the mounting base 100 is bolted to the machine head through the fixing holes 130, which is convenient to detach and has good connection stability. Of course, the connection manner of the mounting base 100 and the machine head may also be welding or other fixed connection manners, which is not limited herein.
The mold core 200 is disposed in the mounting seat 100, and the mold core 200 is mounted in the mounting seat 100 to protect the mold core 200, and the mold core 200 is detachably connected to the mounting seat 100. The mounting seat 100 and the die core 200 can be cut in the mounting seat 100 by controlling the machining tolerance, the mounting seat and the die core are in interference fit, the sealing connection is good, and the conditions of material leakage and the like can be avoided. Of course, the connection mode of the mounting seat 100 and the mold core 200 may also be a bolt connection or other detachable connection mode, which is not limited herein, and the mold core 200 can be conveniently detached and installed through the detachable connection mode, so as to facilitate the cleaning of the inside of the mold core 200, and avoid the phenomenon of material accumulation in the mold core 2.
In order to ensure the reliability and stability of the structure of the mounting seat 100, a metal material such as a stainless steel material or a sheet metal material can be used as a raw material for processing and manufacturing, and the specific material is set according to actual conditions. In order to ensure that the die core 200 has high strength and good finish, materials such as tetrafluoro, tungsten steel, die steel and the like can be used as raw materials for processing and manufacturing, so that the surface of the extruded material is smooth and has no air holes under the high-temperature and high-pressure environment, and the material is not easy to be wetted and absorb water after being cooled by water. Of course, the specific material of the mold core 200 may be set according to actual conditions.
The shapes of the mount 100 and the die core 200 may be rectangular parallelepiped or arbitrary, and are not limited to this, and it is only necessary to keep the respective strengths of the two.
Referring to fig. 2, in the present embodiment, the mold core 200 includes a mold body 210 and an extrusion part 220, and the mold body 210 and the extrusion part 220 may be an integrally formed structure or a segmented structure, which is not limited herein; a flow channel for material circulation is formed in the die body 210, the flow channel extends along the central axial direction of the die body 210, and the flow channel comprises a first feed port 211, a first flow channel 212 and a second flow channel 213 which are sequentially communicated; the flow channel is gradually reduced along the direction from the first feed port 211 to the second flow channel 213; the first opening angle of the first flow channel 212 is larger than the second opening angle of the second flow channel 213; the extrusion part 220 is formed by extending from one end of the die body 210 close to the second flow channel 213, a first discharge hole 221 for extruding the material is formed in the extrusion part 220, and the first discharge hole 221 is communicated with the die body 210. The material enters the die core 200 from the first feed inlet 211, sequentially flows through the first flow channel 212 and the second flow channel 213, and is extruded from the first discharge hole 221.
Please refer to fig. 3, a longitudinal cross-sectional view of the mold structure, that is, a cross-sectional view of the runner along the material flow direction, where the first opening angle is an included angle α formed by two inner walls at the inlet end of the first runner 212 and the central axis of the mold body 210; the second opening angle is an included angle β formed by two inner walls at the inlet end of the second flow channel 213 and the central axis of the die body 210.
The flow channels are sectionally arranged into the first flow channel 212 and the second flow channel 213, materials enter the die core 200 from the first feeding port 211, enter from the larger inlet end of the first flow channel 212, flow into the first flow channel 212, and flow out from the smaller outlet end of the first flow channel 212. Further, when the material flowing out of the outlet end of the first flow channel 212 flows through the second flow channel 213, the pressing force applied to the material is changed again and further increased.
Further, since the first opening angle α of the first flow channel 212 is larger than the second opening angle β of the second flow channel 213, the extrusion pressure applied to the material flowing from the first flow channel into the second flow channel will be a sudden change. The arrangement of the flow channel not only contains the linear change of the extrusion force, but also comprises the sudden change of the extrusion force, compared with the traditional single flow channel, the extrusion force received when the material flows out from the outlet end of the second flow channel 213 is larger, the extrusion force received by the material in the flow channel can be optimized, the material strip extruded from the first discharge hole 221 is more compact, and the surface is smooth and has no air holes. Of course, one skilled in the art may add a third flow channel, a fourth flow channel, or even more, as desired.
The utility model discloses seted up in proper order and linked together first runner 212 and second runner 213 in mould structure 10's the mould body 210, the runner wholly diminishes gradually along the direction of first feed inlet 211 to second runner 213, and the first opening angle of first runner 212 is greater than the second opening angle of second runner 213, and this can optimize extrusion pressure for the smooth pore-free in material surface that extrudes reduces moisture and adheres to.
Further, the first opening angle α of the first flow channel 212 is 35 ° to 60 °.
Further, the second opening angle β of the second flow passage 213 is 10 ° to 25 °.
The larger the first opening angle α, the larger the cross-sectional area at the inlet end relative to the cross-sectional area at the outlet end of the first flow channel 212, the greater the compression force experienced by the material at the outlet end relative to the compression force at the inlet end of the first flow channel 212. Accordingly, the magnitude of the second opening angle β and the magnitude of the pressing force applied to the material in the second flow channel 213 are also changed. Therefore, the extrusion pressure of the material in the first flow channel 212 and the second flow channel 213 can be controlled by optimizing the first opening angle α and the second opening angle β, so that the extrusion pressure at the discharging position is further increased, the air holes on the surface of the extruded material are further reduced, and the moisture adhesion is further reduced.
Further, the first flow passage 212 and the second flow passage 213 are integrally formed in a tapered shape or a trapezoidal shape. The conical body or the trapezoidal body is more beneficial to the processing of the die core. When the first flow channel 212 and the second flow channel 213 are tapered, the opening angle is the taper angle; when the first flow channel 212 and the second flow channel 213 are trapezoidal bodies, the opening angle is the included angle between two inclined planes of the trapezoidal bodies located at two sides of the central axis of the die body and the central axis.
In this embodiment, a cavity capable of accommodating the mold core 200 is formed in the mounting seat 100, a second feeding hole 110 and a second discharging hole 120 are formed in the mounting seat 100, the second feeding hole 110 is communicated with the first feeding hole 211, and the second discharging hole 120 is communicated with the first discharging hole 221. The mold core 200 is fixedly installed in the cavity of the mount 100. The material enters the mold structure 10 from the second inlet 110, sequentially passes through the first inlet 211, the first runner 212, the second runner 213 and the first discharge hole 221, and is finally extruded from the second discharge hole 120.
In this embodiment, the first discharging hole 221 extends and lengthens to form a shaping channel 222. The material gets into mould core 200 from first feed inlet 211, through the dual extrusion back of first runner 212, second runner 213, extrudes after the design runner 222 is stereotyped, and this can make the material of extruding homogeneous, avoids disconnected strip phenomenon, and extrusion ejection of compact quality is higher.
It should be noted that the first discharging hole 221 and the second discharging hole 120 may be circular, or may be in other shapes, and the shaping flow channel 222 may be a cylinder, or may be in other shapes, and the specific shape may be set according to actual situations, which is not limited herein.
As a further improvement of the present embodiment, there are a plurality of sizing runners 222, and the plurality of sizing runners 222 are arranged on the extruding portion 220 at intervals.
As a further improvement of this embodiment, the number of the second discharging holes 120 is multiple, the multiple second discharging holes 120 are arranged on the mounting base 100 at intervals, and each first discharging hole 221 and each second discharging hole 120 are coaxially arranged, which not only enables the material strips to be smoothly extruded from the first discharging holes 221 and the second discharging holes 121 in sequence, but also improves the discharging efficiency, improves the production efficiency, and realizes the continuous mass production.
In this embodiment, the diameter of the first discharging hole 221 is smaller than that of the second discharging hole 120, which facilitates the extrusion of the material strip from the first discharging hole 221 and the second discharging hole 121 without damaging the extruded shape.
The utility model also provides a granulator, granulator include as above arbitrary one's mould structure 10, mount pad 100 fixed connection is on the aircraft nose of granulator. Since the specific structure of the die structure 10 in the pelletizer refers to the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and details are not repeated here.
The granulator can be, but is not limited to, a twin-screw granulator, a single-screw granulator, and the like.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A mold structure, comprising:
a mounting seat;
the die core is arranged in the mounting seat and comprises a die body and an extrusion part, and the die body is connected to one side of the extrusion part;
a runner for material circulation is formed in the die body, the runner extends along the length direction of the die body, and the runner comprises a first feed inlet, a first runner and a second runner which are sequentially communicated; the flow channel is integrally and gradually reduced along the direction from the first feeding hole to the second flow channel; a first opening angle of the first flow channel is larger than a second opening angle of the second flow channel;
the extrusion part is formed by extending one end, close to the second runner, of the die body, a first discharge hole for extruding materials is formed in the extrusion part, and the first discharge hole is communicated with the die body.
2. The mold structure of claim 1, wherein the first opening angle of the first flow channel is between 35 ° and 60 °.
3. The mold structure of claim 1, wherein the second opening angle of the second runner is between 10 ° and 25 °.
4. The mold structure of claim 1, wherein the first flow channel and the second flow channel are integrally tapered or trapezoidal.
5. The mold structure according to claim 1, wherein the mounting seat has a cavity therein for accommodating the mold core, the mounting seat has a second inlet and a second outlet, the second inlet is connected to the first inlet, and the second outlet is connected to the first outlet.
6. The mold structure according to any one of claims 1 to 5, wherein the first discharge hole is elongated to form a shaped flow channel.
7. The die structure of claim 6, wherein the plurality of sizing runners are arranged at intervals on the extrusion portion.
8. The mold structure according to claim 5, wherein the second discharging holes are plural, the plural second discharging holes are arranged on the mounting base at intervals, and each first discharging hole is arranged coaxially with each second discharging hole.
9. The mold structure of claim 8, wherein the diameter of the first discharge opening is smaller than the diameter of the second discharge opening.
10. A granulator, characterized in that the granulator comprises a die arrangement according to any one of claims 1 to 9, the mounting being fixedly attached to the head of the granulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221840819.5U CN217993452U (en) | 2022-07-15 | 2022-07-15 | Die structure and granulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221840819.5U CN217993452U (en) | 2022-07-15 | 2022-07-15 | Die structure and granulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217993452U true CN217993452U (en) | 2022-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221840819.5U Active CN217993452U (en) | 2022-07-15 | 2022-07-15 | Die structure and granulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217993452U (en) |
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2022
- 2022-07-15 CN CN202221840819.5U patent/CN217993452U/en active Active
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