CN214687855U

CN214687855U - Extrusion molding device

Info

Publication number: CN214687855U
Application number: CN202022980960.2U
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: 2021-11-12
Anticipated expiration: 2030-12-08

Abstract

The utility model discloses an extrusion molding device belongs to plastics processing technology field. The utility model discloses an extrusion molding device includes that the twin-screw extrudes the part, extrudes cavity and bush, the twin-screw extrude the output of part with extrude the cavity intercommunication, it is provided with the opening to extrude the cavity, the bush seal set up in the opening part, be provided with the edge on the bush the shaping hole that the terminal surface circumference of bush distributes, the bottom surface of extruding the cavity is provided with the partition part, the partition part will along circumference extrude the cavity and separate into a plurality of regions. The utility model discloses bottom surface at the extrusion chamber sets up the partition part, will extrude the chamber and separate into a plurality of regions in week to extrude the in-process that the part extruded the shaping hole of bush from the twin-screw at the plastics under glutinous state of flowing, can effectively reduce the twin-screw and extrude the influence of the direction of extrusion of part plastics under the state to glutinous, improve the identity that the product was extruded.

Description

Extrusion molding device

Technical Field

The utility model relates to a plastic processing technology field, concretely relates to extrusion molding device.

Background

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

Present extrusion molding device mainly adopts the structural style of rotatory screw rod to extrude plastics under the viscous flow state, then forms predetermined shape through the bush, but, when the screw rod was extruded the part, its rotation had the directionality, and the plastics under the viscous flow state that is located between screw rod extrusion position and the bush can concentrate on a slice specific region to cause plastics to pass through the position of bush inhomogeneous, influence the homogeneity of being extruded the material.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the embodiment of the utility model provides an extrusion molding device can improve the identity of extruding the product.

In order to realize above-mentioned purpose, the embodiment of the utility model provides an extrusion molding device, extrude part, extrude cavity and bush including the twin-screw, the twin-screw extrude the output of part with extrude the cavity intercommunication, it is provided with the opening to extrude the cavity, the bush seal set up in the opening part, be provided with the edge on the bush the shaping hole that the terminal surface circumference of bush distributes, the bottom surface of extruding the cavity is provided with the partition part, the partition part will along circumference extrude the cavity and separate into a plurality of regions.

Optionally, the extrusion chamber is configured as an inwardly concave hemispherical structure.

Optionally, one end of the partition member is disposed on a circumference of the extrusion chamber, the other end of the partition member is disposed at a center of the extrusion chamber, and a height of the partition member gradually increases from the circumference of the extrusion chamber to the center of the extrusion chamber.

Optionally, the partition member is provided with guide members respectively along two sides of the extrusion chamber in the circumferential direction, and the guide members are circular arc surfaces extending from the top of the partition member to the bottom surface of the extrusion chamber.

Optionally, a filling component is arranged in the middle of one side, facing the extrusion chamber, of the neck mold, and the outer surface of the filling component is in a hemispherical shape.

Optionally, a first butt end is arranged at an opening of the extrusion chamber, a second butt end is arranged on one side of the die facing the extrusion chamber, and the first butt end is attached to the second butt end.

Optionally, a sealing ring is disposed between the first abutting end and the second abutting end.

Optionally, a plurality of first connection holes are circumferentially formed in the first connection end, a plurality of second connection holes are circumferentially formed in the second connection end, and the first connection holes correspond to the second connection holes one to one.

Optionally, the extrusion die further comprises a cutting part and a material receiving part, wherein the cutting part is arranged on one side, away from the extrusion cavity, of the mouth die, the material receiving part comprises a funnel and a material receiving platform, the funnel is vertically arranged between the cutting part and the material receiving platform, and the caliber of an upper end opening of the funnel is larger than the caliber of a lower end opening of the funnel.

Optionally, the material receiving platform further comprises a moving platform, a spring and a driving part, wherein the spring is arranged at the bottom of the moving platform, one end of the spring is fixedly connected with the bottom of the moving platform, the other end of the spring is fixedly arranged, the driving part is fixedly arranged on the moving platform and comprises a motor and an eccentric wheel connected with the motor, and the eccentric wheel is connected with an output shaft of the motor.

The utility model has the advantages that:

the utility model discloses an extrusion molding device, extrude part, extrude cavity and bush including the twin-screw, the twin-screw extrude the output of part with extrude the cavity intercommunication, it is provided with the opening to extrude the cavity, the bush seal set up in the opening part, be provided with the edge on the bush the shaping hole that the terminal surface circumference of bush distributes, the bottom surface of extruding the cavity is provided with the partition part, the partition part will along circumference extrude the cavity and separate into a plurality of regions. The utility model discloses bottom surface at the extrusion chamber sets up the partition part, will extrude the chamber and separate into a plurality of regions in week to extrude the in-process that the part extruded the shaping hole of bush from the twin-screw at the plastics under glutinous state of flowing, can effectively reduce the twin-screw and extrude the influence of the direction of extrusion of part plastics under the state to glutinous, improve the identity that the product was extruded.

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 view of an extrusion molding apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of an extrusion molding apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic view of the front structure of the extrusion chamber of the present invention;

fig. 4 is a schematic view of the entire structure of an extrusion molding apparatus according to an 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 twin screw extrusion component; 2. an extrusion chamber; 3. a neck ring mold; 4. a cutting member; 20. an opening; 21. a partition member; 22. a guide member; 23. a first butt end; 24. a first mating hole; 30. forming holes; 31. a filling member; 32. a second butt joint end; 33. a second docking hole; 50. a funnel; 51. a mobile platform; 52. a spring; 53. an electric motor.

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 3, the embodiment of the utility model provides an extrusion molding device mainly includes twin-screw extrusion part 1, extrude cavity 2 and bush 3, twin-screw extrusion part 1's output with extrude cavity 2 intercommunication, extrude cavity 2 and be provided with opening 20, bush 3 is sealed to be set up in opening 20 department, be provided with on the bush 3 along the shaping hole 30 of 3 terminal surface circumference distributions of bush, the bottom surface of extruding cavity 2 is provided with partition part 21, partition part 21 will extrude cavity 2 along circumference and separate into a plurality of regions.

In operation, the plastic in a viscous flow state is extruded into the extrusion chamber 2 through the double-screw extrusion component 1, the opening 20 of the extrusion chamber 2 is sealed by the die 3, when the plastic in the extrusion chamber 2 is enough, the double-screw extrusion component 1 continuously provides the plastic into the extrusion chamber 2, the pressure in the extrusion chamber 2 is increased, so that the plastic in the extrusion chamber 2 is extruded out of the outer side of the die 3 through the forming holes 30 on the die 3 and forms a shape similar to the forming holes 30, the plastic in the viscous flow state in the extrusion chamber 2 forms a directional flow due to the directionality of the extrusion of the plastic by the double-screw extrusion component 1, the plastic in the viscous flow state is mainly extruded through one part of the forming holes 30, and the plastic in the other part of the forming holes 30 is relatively less extruded, in the embodiment, the separating component 21 is arranged on the bottom surface of the extrusion chamber 2, the extrusion chamber 2 is divided into a plurality of areas in the circumferential direction by the dividing component 21, so that the influence of the rotation of the double-screw extrusion component 1 in a specific direction on the plastic in the extrusion chamber 2 is effectively reduced, the plastic in the extrusion chamber 2 is extruded from each forming hole 30 on the neck ring 3 more uniformly, and the identity of the extruded product is improved.

According to an embodiment of the present invention, the extrusion chamber 2 is configured as a concave hemispherical structure. The bottom surface of the extrusion cavity 2 is provided with a pair of via holes which are symmetrically arranged by taking the extrusion cavity 2 as a center, the tail ends of two screws of the double-screw extrusion component 1 respectively extend into the extrusion cavity 2 through the corresponding via holes, the volume of the extrusion cavity 2 can be properly reduced by the semispherical structure, the capacity of plastics in the extrusion cavity 2 is reduced, and the semispherical structure can enable the plastics to flow more uniformly in the extrusion process, so that the plastics are ensured to be more uniformly distributed on each part of the end surface of the neck mold 3.

According to the utility model discloses an embodiment, the one end of partition member 21 sets up on the contour of extruding chamber 2, and the other end sets up in the center department of extruding chamber 2, from the contour of extruding chamber 2 to the center department of extruding chamber 2, and the height of partition member 21 increases gradually. It will be understood that the plastic is more influenced by the directional extrusion of the twin-screw extrusion part 1 closer to the center of the extrusion chamber 2, so that it is necessary to set the height of the partition member 21 relatively higher at a position away from the center of the extrusion chamber 2, while the plastic is less influenced by the directional extrusion of the twin-screw extrusion part 1 at a position closer to the die 3, where the uniformity of the flow of the plastic in the extrusion chamber 2 can be preferentially secured, so that the height of the partition member 21 is as low as possible in this region, and of course, the entire partition member 21 is preferably of a uniform, continuously varying structure. In a specific example, the partition member 21 includes two, and the two partition members 21 are symmetrically disposed at the center of the extrusion chamber 2, wherein optionally, the two partition members 21 are disposed on the midperpendicular of the circular line of the two via holes.

According to an embodiment of the present invention, the partition member 21 is provided with the guide members 22 along both sides of the extrusion chamber 2 in the circumferential direction, respectively, and the guide members 22 are provided as arc surfaces extending from the top of the partition member 21 to the bottom surface of the extrusion chamber 2. In the extrusion chamber 2, it is not suitable to completely divide the extrusion chamber 2 into a plurality of independent areas, which may excessively limit the fluidity of the extrusion chamber 2, resulting in uneven distribution of the plastic on the end surface of the die 3, for this reason, in this embodiment, the guide member 22 is arranged to ensure the fluidity of the plastic on both sides of the partition member 21, thereby improving the uniformity of the distribution of the plastic on the end surface of the die 3 and ensuring the identity of product extrusion.

According to an embodiment of the present invention, the middle of the side of the die 3 facing the extrusion chamber 2 is provided with a filling member 31, and the outer surface of the filling member 31 is hemispherical. The filling member 31 is located inside the extrusion chamber 2 during operation, on one hand, the volume of the extrusion chamber 2 is reduced by the arrangement of the filling member 31, and the capacity of the plastic in the extrusion chamber 2 is reduced, on the other hand, the outer surface of the filling member 31 is in a hemispherical structure, a guide structure is formed, and the plastic near the filling member 31 is diffused and distributed along the outer surface of the hemispherical structure of the filling member 31 towards the end face of the die 3 under the action of the extrusion force. In an alternative embodiment, the shaping holes 30 are distributed in the area of a circular ring surrounding the filling member 31 on the end face of the die 3 on the side facing the extrusion chamber 2, so that the plastic is distributed more uniformly in this circular ring area by the filling member 31, thereby facilitating the extrusion and shaping of the plastic through the shaping holes 30.

According to the utility model discloses an embodiment, the opening part of extruding chamber 2 is provided with first butt end 23, and one side that bush 3 orientation extruded chamber 2 is provided with second butt end 32, and first butt end 23 is laminated mutually with second butt end 32. In a preferred scheme, the extrusion chamber 2 and the port die 3 are arranged in a detachable structure, so that the inside of the extrusion chamber 2 and the end surface of the port die 3 can be cleaned and maintained, and when the extrusion chamber 2 and the port die 3 are rapidly butted through the first butt joint end 23 and the second butt joint end 32.

According to the utility model discloses an embodiment is provided with the sealing ring between first butt end 23 and the second butt end 32 to improve the leakproofness between first butt end 23 and the second butt end 32 through the sealing ring, optional, the sealing ring sets up around extruding chamber 2. Specifically, it is possible to select to provide corresponding ring grooves on the first butt end 23 and the second butt end 32, and to provide a sealing ring in the ring groove, or alternatively, it is also possible to select to provide a ring groove and an annular protruding ring on the first butt end 23 and the second butt end 32, respectively, so as to form a sealing structure between the ring groove and the protruding ring.

In a specific example, the first abutting end 23 is provided with a plurality of first abutting holes 24, the plurality of first abutting holes 24 are distributed along the circumferential direction of the first abutting end 23, the second abutting end 32 is provided with a plurality of second abutting ends 33, the plurality of second abutting holes 33 are distributed along the circumferential direction of the second abutting end 32, wherein the first abutting holes 24 and the second abutting holes 33 are arranged in a one-to-one correspondence, and when the die 3 is installed, the die 3 is fastened to the extrusion chamber 2 through bolt structures matched with the first abutting holes 24 and the second abutting holes 33.

According to the utility model discloses an embodiment, like fig. 4, the extrusion molding device still includes cutting part 4 and receipts material part 5, cutting part 4 sets up in the one side that the bush 3 deviates from extrusion chamber 2, it includes funnel 50 and receipts material platform to receive material part 5, funnel 50 sets up between cutting part 4 and receipts material platform along vertical, funnel 50's upper end open-ended bore is greater than funnel 50's lower extreme open-ended bore, it is noted that, in fig. 4, because the direction setting of the perpendicular to diagram of funnel, so fail the big lower extreme of direct indication upper end opening structure that opens up in fig. 4.

During operation, the plastic extruded from the die 3 forms a strip-shaped structure similar to the shape of the forming hole 30, after being extruded from the forming hole 30, the plastic needs to be cut off by the cutting component 4 to form plastic particles with a preset size, the plastic particles are cut off to fall into the upper end opening of the funnel 50 and fall onto the material receiving platform through the funnel, and the plastic particles are collected and stored or used for the next process through the material receiving platform.

According to the utility model discloses an embodiment, receive the material platform and mainly include moving platform 51, spring 52 and driver part, wherein spring 52 sets up in moving platform 51's bottom, spring 52's one end and moving platform 51's bottom fixed connection, the fixed setting of the other end of spring 52, the one end that moving platform 51 was kept away from to concrete spring 52 can be selected fixedly to set up subaerial, driver part includes motor 53 and eccentric wheel (not shown), the eccentric wheel links to each other with motor 53's output shaft.

Receive the material platform and can realize the automatic collection to plastic granules, at the during operation, the plastic granules that are formed by the cutting fall into moving platform 51 through the funnel on, open motor 53 fixed with moving platform 51, at this moment, the eccentric wheel begins to rotate under the drive of motor, because moving platform 51's bottom is the structure that can move, the eccentric wheel is when rotating, the inertia of motion has been produced, under the effect of spring 52, moving platform 51 produces vibrations from top to bottom, realize the transmission to plastic granules through this vibrations.

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 extrusion molding device is characterized by comprising a double-screw extrusion part, an extrusion chamber and a neck ring mold, wherein the output end of the double-screw extrusion part is communicated with the extrusion chamber, the extrusion chamber is provided with an opening, the neck ring mold is arranged at the opening in a sealing manner, molding holes which are distributed along the circumferential direction of the end surface of the neck ring mold are arranged on the neck ring mold, a partition part is arranged on the bottom surface of the extrusion chamber, and the partition part divides the extrusion chamber into a plurality of areas along the circumferential direction.

2. Extrusion apparatus according to claim 1, wherein the extrusion chamber is provided as an inwardly concave hemispherical structure.

3. An extrusion apparatus according to claim 2, wherein said partition member is provided at one end on a circumference of said extrusion chamber and at the other end at a center of said extrusion chamber, and a height of said partition member is gradually increased from the circumference of said extrusion chamber to the center of said extrusion chamber.

4. An extrusion apparatus according to claim 3, wherein the partition member is provided with guide members along both sides in the circumferential direction of the extrusion chamber, respectively, the guide members being provided as circular arc surfaces extending from the top of the partition member to the bottom surface of the extrusion chamber.

5. Extrusion device according to claim 1, characterised in that the die is provided with a filling element in the middle of its side facing the extrusion chamber, the outer surface of said filling element being hemispherical.

6. An extrusion molding device as claimed in claim 1, wherein a first butt end is provided at the opening of the extrusion chamber, a second butt end is provided at a side of the die facing the extrusion chamber, and the first butt end is abutted against the second butt end.

7. An extrusion device as in claim 6, wherein a sealing ring is disposed between the first and second abutments.

8. An extrusion molding apparatus as in claim 6, wherein the first mating end has a plurality of first mating holes circumferentially disposed thereon, and the second mating end has a plurality of second mating holes circumferentially disposed thereon, the first mating holes corresponding one-to-one with the second mating holes.

9. An extrusion molding apparatus as claimed in any one of claims 1 to 8, further comprising a cutting component disposed on a side of said die facing away from said extrusion chamber and a receiving component comprising a funnel and a receiving platform, said funnel being vertically disposed between said cutting component and said receiving platform, an upper end opening of said funnel having a larger caliber than a lower end opening of said funnel.

10. The extrusion molding device as claimed in claim 9, wherein the receiving platform further comprises a moving platform, a spring and a driving part, the spring is arranged at the bottom of the moving platform, one end of the spring is fixedly connected with the bottom of the moving platform, the other end of the spring is fixedly arranged, the driving part is fixedly arranged on the moving platform, the driving part comprises a motor and an eccentric wheel connected with the motor, and the eccentric wheel is connected with an output shaft of the motor.