CN218803809U - Improved generation injection molding machine screw rod feed cylinder device - Google Patents
Improved generation injection molding machine screw rod feed cylinder device Download PDFInfo
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- CN218803809U CN218803809U CN202223290458.4U CN202223290458U CN218803809U CN 218803809 U CN218803809 U CN 218803809U CN 202223290458 U CN202223290458 U CN 202223290458U CN 218803809 U CN218803809 U CN 218803809U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Injection Moulding Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides an improved screw charging barrel device of an injection molding machine; the feeding screw rod extends into the inner hole of the charging barrel, and the plurality of groups of heating mechanisms are coated on the outer wall of the charging barrel; the exhaust hole is formed in the top of the outer side wall of the charging barrel, the position, corresponding to the exhaust hole, of the inner hole side wall of the charging barrel is provided with a surplus material groove, the exhaust hole penetrates through the side wall of the charging barrel and the surplus material groove and is communicated with the inner hole of the charging barrel, and the side, with the longest projection graph, of the surplus material groove on the end face of the charging barrel is an arc. When feeding screw extrudeed molten plastic material to being close to the exhaust hole region, plastic material can get into the clout groove, and the clout groove increases plastic material and moves the space that can occupy to here, avoids directly extruding molten plastic material to the exhaust hole in, reaches carminative purpose, can not cause the plastic material after melting too excessive.
Description
Technical Field
The utility model relates to an injection molding processing technology field especially relates to an injection molding machine screw rod feed cylinder device.
Background
In the plastic injection process, plastic raw materials with large water absorption rate, such as: the ABS, nylon, organic glass, PET and the like need to be dried before injection molding, so that the ABS can be used for injection molding production, otherwise, a large amount of bubbles can be mixed in an injection molding product, and adverse consequences such as unqualified product quality are caused. However, the special equipment for drying the plastic raw material not only increases the working procedures, but also prolongs the production time, for example, PET plastic needs to be dried continuously for 5-6 hours at 160 ℃, which not only reduces the production efficiency of enterprises, but also increases the production cost of the enterprises.
The Chinese utility model patent application number 201621223208.0, injection molding machine screw charging barrel and injection molding machine, discloses an injection molding machine screw charging barrel comprising a feeding screw, a charging barrel, a feeding hopper, an exhaust device and a heating device, wherein the feeding screw comprises a plastic melting propulsion section, a plastic control propulsion section, a plastic storage propulsion section and a plastic acceleration section which are sequentially arranged along a plastic raw material feeding direction, the feeding hopper is arranged above the plastic melting propulsion section, the exhaust device comprises an exhaust passage arranged above the plastic control propulsion section, a sealing plate for sealing the exhaust passage, an exhaust hole arranged on the sealing plate and a connecting conduit arranged between the exhaust device and the feeding hopper; one end of the connecting guide pipe is fixedly connected with the exhaust hole, the other end of the connecting guide pipe is fixedly connected with the side wall of the feed hopper, and the heating device is coated on the outer walls of the feed barrel and the connecting guide pipe. The utility model provides an injection molding machine screw rod feed cylinder is used for the gas outgoing of the inside production of feed cylinder.
However, the above patent techniques have the following disadvantages:
1. the direct hole with the feed cylinder that exhausts communicates with each other in this patent, and in-service use, the pay-off screw rod can be directly extrudeed the plastics raw materials that melts to the exhaust hole in, above-mentioned exhaust apparatus's structure leads to the connecting duct to inevitable receive the jam of raw materials, can't reach carminative purpose at all, even if do not have above-mentioned patent exhaust apparatus, also can cause the plastics raw materials after melting excessive, has lost the purpose of seting up the exhaust hole.
2. Only rely on conventional pay-off screw rod to extrude exhaust work, can't realize carrying out the abundant extrusion with air in the plastic materials, if do not set up the stoving process in the feeding department then still can lead to mixing with a large amount of bubbles in the injection moulding product, cause the nonconforming of product quality.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an improved generation injection molding machine screw rod feed cylinder device that rational in infrastructure, be convenient for maintain is provided, and this improved generation injection molding machine screw rod feed cylinder device can prevent that the condition that plastic materials got into the exhaust hole from taking place.
In order to solve the technical problem, the utility model provides an improved screw charging barrel device of an injection molding machine;
the heating device comprises a feeding screw, a charging barrel and a plurality of groups of heating mechanisms, wherein a discharge hole communicated with an inner hole of the charging barrel is formed in the end face of the near end of the charging barrel, a feed inlet communicated with the inner hole of the charging barrel is formed in the side wall of the far end of the charging barrel, the feeding screw extends into the inner hole of the charging barrel, threads are arranged on the side wall of the feeding screw, and the plurality of groups of heating mechanisms are coated on the outer wall of the charging barrel;
the top of the outer side wall of the charging barrel is provided with an exhaust hole, the position of the inner hole side wall of the charging barrel, corresponding to the exhaust hole, is provided with a surplus material groove, the exhaust hole penetrates through the side wall of the charging barrel and the surplus material groove and is communicated with the inner hole of the charging barrel, the side of the surplus material groove, with the longest projection graph on the end surface of the charging barrel, of the surplus material groove is an arc, the highest point of the arc edge is intersected with the projection line of the axis of the exhaust hole on the end surface of the charging barrel, and the lowest point of the arc edge is intersected with the projection circle of the inner hole side wall of the charging barrel on the end surface of the charging barrel.
After adopting such structure, hole lateral wall at the feed cylinder sets up the clout groove, in the in-service use, the pay-off screw rod extrudees the fused plastics raw materials to when being close to the exhaust hole region, during the plastics raw materials can get into the clout groove, compare the space between original only pay-off screw rod and the feed cylinder inner wall, the clout groove increases the space that the plastics raw materials removed to here can occupy, avoid directly extruding the fused plastics raw materials to the exhaust hole in, reach carminative purpose, can not cause the plastics raw materials after the melting excessive yet.
As the optimization of this improved generation injection molding machine screw rod feed cylinder device, the feed cylinder includes first barrel and second barrel, and first barrel is in the near-end one side of second barrel, and it has rather than the communicating discharge opening of hole to open on the first barrel near-end terminal surface, the clout groove is in first barrel, and it has rather than the communicating feed inlet of hole to open on the second barrel distal end lateral wall, and first barrel distal end terminal surface is equipped with first ring flange, and second barrel near-end terminal surface is equipped with the second ring flange, and the first ring flange of first barrel passes through bolt fixed connection with the second ring flange of second barrel, and the hole of first barrel communicates with each other with the hole of second barrel.
After adopting such structure, the feed cylinder is formed by first barrel and the combination of second barrel, can make things convenient for the processing of surplus silo to the holistic stability of feed cylinder can be guaranteed in the cooperation of first ring flange and second ring flange.
The improved screw charging barrel device of the injection molding machine does not need to dry the plastic raw material for 4 to 5 hours before feeding, so that the unfavorable working condition that the pump body is blocked by the plastic raw material due to overlarge suction force of a vacuum pump when the vacuum pump is used for steam treatment is reduced.
Preferably, the middle part of the side wall of the feeding screw is provided with an extrusion section, and the side wall of the feeding screw in the extrusion section extends outwards to form a plurality of extrusion lugs;
after the feeding screw rod is matched with the charging barrel, the extrusion section is positioned in an area between the exhaust hole of the charging barrel and the feeding hole of the charging barrel, and the extrusion section of the feeding screw rod is close to the exhaust hole of the charging barrel.
After the structure is adopted, after the plastic raw materials enter the extrusion section, the plastic raw materials are scattered by the extrusion convex blocks on the side wall of the feeding screw rod, and finally, air in the plastic raw materials is fully separated.
Preferably, the side wall of the feeding screw is provided with a transition section, the transition section is close to the extrusion section, the transition section is positioned in an area between the extrusion section and the feed inlet of the charging barrel, the outer diameter of the outer wall of the feeding screw at the far end of the transition section is smaller than that of the outer wall of the feeding screw at the near end of the transition section, and the outer diameter of the outer wall of the feeding screw along the direction from the far end of the transition section to the near end of the transition section is gradually increased.
After the structure is adopted, after the plastic material enters the transition section, the outer diameter of the outer wall of the feeding screw rod is gradually increased along the direction from the far end to the near end of the transition section, and the space between the side wall of the feeding screw rod and the inner wall of the charging barrel is reduced, so that the air in the plastic material is further discharged.
Preferably, the side wall of the feeding screw is also provided with a first feeding section and a second feeding section, the second feeding section and the first feeding section are sequentially positioned in an area between the transition section and the far end of the feeding screw, and the thread pitch of the side wall of the feeding screw positioned in the first feeding section is larger than that of the side wall of the feeding screw positioned in the second feeding section;
after the feeding screw rod is matched with the charging barrel, the feeding hole of the charging barrel is aligned to the feeding screw rod in the first feeding section.
After adopting such structure, plastics raw materials pass through first feeding section in proper order, the plastics raw materials that the second feeding section is in first feeding section is normally transported to feed cylinder discharge gate direction by the feeding screw, get into second feeding section after, because the screw pitch that is in on the feeding screw lateral wall in first feeding section is greater than the screw pitch that is in on the feeding screw lateral wall in second feeding section, through the screw pitch that changes on the feeding screw, the plastics raw materials is originally extruded to second feeding section beginning for air in the plastics raw materials obtains preliminary discharge.
Drawings
FIG. 1 is a front view of an embodiment of the screw barrel assembly of the improved injection molding machine.
Fig. 2 is a sectional view of fig. 1.
Fig. 3 is a front view of a feed screw in an embodiment of the improved injection molding machine screw barrel assembly.
Fig. 4 is an enlarged view of a portion a of fig. 3.
FIG. 5 is a cross-sectional front view of a barrel in an embodiment of the screw barrel assembly of the improved injection molding machine.
Fig. 6 is a sectional view taken along line B-B of fig. 5.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.
The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Please refer to fig. 1 to 6.
The improved screw charging barrel device of the injection molding machine comprises a feeding screw 1, a charging barrel 2 and a plurality of groups of heating mechanisms 3.
The charging barrel 2 comprises a first barrel 23 and a second barrel 24, the first barrel 23 is positioned at one side of the near end of the second barrel 24, a discharge hole 21 communicated with an inner hole of the first barrel 23 is formed in the end face of the near end of the first barrel 23, a feed inlet 22 communicated with the inner hole of the second barrel 24 is formed in the side wall of the far end of the second barrel 24, a first flange plate 23a is arranged on the end face of the far end of the first barrel 23, a second flange plate 24a is arranged on the end face of the near end of the second barrel 24, the first flange plate 23a of the first barrel 23 is fixedly connected with the second flange plate 24a of the second barrel 24 through bolts, and the inner hole of the first barrel 23 is communicated with the inner hole of the second barrel 24.
The top of the outer side wall of the first cylinder 23 is provided with an exhaust hole 25, the inner hole side wall of the first cylinder 23 is provided with a surplus material groove 26 corresponding to the exhaust hole 25, the exhaust hole 25 penetrates through the side wall of the first cylinder 23 and the surplus material groove 26 and is communicated with the inner hole of the first cylinder 23, the side of the surplus material groove 26 with the longest projection pattern on the end surface of the first cylinder 23 is an arc, the highest point of the arc is intersected with the projection line of the axis of the exhaust hole 25 on the end surface of the first cylinder 23, and the lowest point of the arc is intersected with the projection circle of the inner hole side wall of the charging barrel 2 on the end surface of the first cylinder 23.
The feeding screw rod 1 extends into an inner hole of the charging barrel 2, threads are arranged on the side wall of the feeding screw rod 1, and the multiple groups of heating mechanisms 3 are coated on the outer wall of the charging barrel 2.
The middle part of the side wall of the feeding screw rod 1 is provided with an extrusion section 11, the side wall of the feeding screw rod 1 in the extrusion section 11 is not provided with threads, and the side wall of the feeding screw rod 1 in the extrusion section 11 extends outwards to form a plurality of extrusion convex blocks 11a.
The side wall of the feeding screw rod 1 is also provided with a transition section 12, the transition section 12 is close to the extrusion section 11, the transition section 12 is positioned in the area between the extrusion section 11 and the feed inlet 22 of the charging barrel 2, the outer diameter of the outer wall of the feeding screw rod 1 at the far end of the transition section 12 is smaller than that of the outer wall of the feeding screw rod 1 at the near end of the transition section 12, and the outer diameter of the outer wall of the feeding screw rod 1 is gradually increased along the direction from the far end to the near end of the transition section 12.
The side wall of the feeding screw 1 is also provided with a first feeding section 14 and a second feeding section 13, the second feeding section 13 and the first feeding section 14 are sequentially positioned in the area between the transition section 12 and the far end of the feeding screw 1, and the thread pitch of the thread on the side wall of the feeding screw 1 positioned in the first feeding section 14 is larger than that of the thread on the side wall of the feeding screw 1 positioned in the second feeding section 13.
After the feed screw 1 is matched with the barrel 2, the extrusion section 11 is positioned in the area between the exhaust hole of the barrel 2 and the feed port 22 of the barrel 2, and the extrusion section 11 of the feed screw 1 is close to the exhaust hole of the barrel 2.
After the feed screw 1 is engaged with the barrel 2, the feed opening 22 of the barrel 2 is aligned with the feed screw 1 in the first feed section 14, and the second feed section 13 is located in the region between the transition section 12 and the first feed section 14.
This improved generation injection molding machine screw rod feed cylinder device during operation at first drops into the plastics raw materials into feed cylinder 2 from feed inlet 22, and through the rotation of pay-off screw 1 afterwards, constantly carries it to plastics control propulsion section from plastics melting propulsion section, and the heating mechanism 3 cladding around the outer wall of feed cylinder 2 utilizes the plastics raw materials to the feed cylinder 2 inside to carry out high temperature melting, melts the plastics raw materials into the plastics of molten state.
In the section process from the feed port 22 to the exhaust hole of the charging barrel 2, the plastic raw material sequentially passes through the first feed section 14, the second feed section 13, the transition section 12 and the extrusion section 11, and the plastic raw material in the first feed section 14 is normally transported to the discharge port of the charging barrel 2 by the feeding screw 1;
after entering the second feeding section 13, because the thread pitch of the side wall of the feeding screw 1 in the first feeding section 14 is larger than that of the side wall of the feeding screw 1 in the second feeding section 13, the second feeding section 13 starts to preliminarily extrude the plastic raw material by changing the thread pitch of the feeding screw 1, so that air in the plastic raw material is preliminarily discharged;
after entering the transition section 12, because the outer diameter of the outer wall of the feeding screw rod 1 is gradually increased along the direction from the far end to the near end of the transition section 12, the air in the plastic raw material is further discharged by reducing the space between the side wall of the feeding screw rod 1 and the inner wall of the charging barrel 2;
after entering the extrusion section 11, the plastic raw material is scattered by a plurality of extrusion bumps 11a on the side wall of the feeding screw 1, and finally, the air in the plastic raw material is fully separated, and is exhausted from the exhaust holes.
Meanwhile, the molten plastic raw material in the charging barrel 2 is continuously conveyed forwards, and finally the molten plastic raw material is pushed into a forming die to be cooled and shaped.
The above description is only one embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and improvements can be made without departing from the principle of the present invention, and these should also be regarded as belonging to the protection scope of the present invention.
Claims (5)
1. An improved screw charging barrel device of an injection molding machine is characterized in that:
the feeding screw rod extends into the inner hole of the charging barrel, threads are arranged on the side wall of the feeding screw rod, and the plurality of groups of heating mechanisms are coated on the outer wall of the charging barrel;
it is characterized in that:
the top of the outer side wall of the charging barrel is provided with an exhaust hole, the position of the inner hole side wall of the charging barrel, corresponding to the exhaust hole, is provided with a surplus material groove, the exhaust hole penetrates through the side wall of the charging barrel and the surplus material groove and is communicated with the inner hole of the charging barrel, the side of the surplus material groove, with the longest projection graph on the end surface of the charging barrel, of the surplus material groove is an arc, the highest point of the arc edge is intersected with the projection line of the axis of the exhaust hole on the end surface of the charging barrel, and the lowest point of the arc edge is intersected with the projection circle of the inner hole side wall of the charging barrel on the end surface of the charging barrel.
2. The improved injection molding machine screw barrel assembly of claim 1, wherein:
the charging barrel comprises a first barrel body and a second barrel body, the first barrel body is positioned on one side of the near end of the second barrel body, a discharge hole communicated with an inner hole of the first barrel body is formed in the end face of the near end of the first barrel body, the excess material groove is positioned in the first barrel body, a feed inlet communicated with the inner hole of the second barrel body is formed in the side wall of the far end of the second barrel body, a first flange plate is arranged on the end face of the far end of the first barrel body, a second flange plate is arranged on the end face of the near end of the second barrel body, the first flange plate of the first barrel body is fixedly connected with the second flange plate of the second barrel body through bolts, and the inner hole of the first barrel body is communicated with the inner hole of the second barrel body.
3. The improved injection molding machine screw barrel assembly of claim 1, wherein:
an extrusion section is arranged in the middle of the side wall of the feeding screw, and a plurality of extrusion lugs extend outwards from the side wall of the feeding screw in the extrusion section;
after the feeding screw rod is matched with the charging barrel, the extrusion section is positioned in an area between the exhaust hole of the charging barrel and the feeding hole of the charging barrel, and the extrusion section of the feeding screw rod is close to the exhaust hole of the charging barrel.
4. The improved injection molding machine screw barrel assembly of claim 3, wherein:
the lateral wall of the feeding screw is also provided with a transition section, the transition section is close to the extrusion section, the transition section is positioned in an area between the extrusion section and the feed inlet of the charging barrel, the outer diameter of the outer wall of the feeding screw at the far end of the transition section is smaller than that of the outer wall of the feeding screw at the near end of the transition section, and the outer diameter of the outer wall of the feeding screw along the direction from the far end of the transition section to the near end of the transition section is gradually increased.
5. The improved injection molding machine screw barrel assembly of claim 4, wherein:
the side wall of the feeding screw is also provided with a first feeding section and a second feeding section, the second feeding section and the first feeding section are sequentially positioned in an area between the transition section and the far end of the feeding screw, and the thread pitch of the thread on the side wall of the feeding screw positioned in the first feeding section is larger than that of the thread on the side wall of the feeding screw positioned in the second feeding section;
after the feeding screw rod is matched with the charging barrel, the feeding hole of the charging barrel is aligned to the feeding screw rod in the first feeding section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223290458.4U CN218803809U (en) | 2022-12-08 | 2022-12-08 | Improved generation injection molding machine screw rod feed cylinder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223290458.4U CN218803809U (en) | 2022-12-08 | 2022-12-08 | Improved generation injection molding machine screw rod feed cylinder device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218803809U true CN218803809U (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223290458.4U Active CN218803809U (en) | 2022-12-08 | 2022-12-08 | Improved generation injection molding machine screw rod feed cylinder device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218803809U (en) |
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2022
- 2022-12-08 CN CN202223290458.4U patent/CN218803809U/en active Active
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