CN218803810U - Injection molding machine screw rod feed cylinder device and injection molding machine - Google Patents
Injection molding machine screw rod feed cylinder device and injection molding machine Download PDFInfo
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- CN218803810U CN218803810U CN202223291421.3U CN202223291421U CN218803810U CN 218803810 U CN218803810 U CN 218803810U CN 202223291421 U CN202223291421 U CN 202223291421U CN 218803810 U CN218803810 U CN 218803810U
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- 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
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Abstract
The utility model provides an injection molding machine screw rod charging barrel device, which comprises a feeding screw rod, a charging barrel, an exhaust mechanism and a plurality of groups of heating mechanisms, wherein the feeding screw rod extends into an 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 top of the side wall of the charging barrel is provided with a through hole, the lower end of an assembly pipe of the exhaust mechanism is fixedly connected to the side wall of the charging barrel, the assembly pipe is communicated with an inner hole of the charging barrel through the through hole, the upper end of a transmission shaft is fixed with an output shaft of a hydraulic motor, the transmission shaft is positioned in the assembly pipe, a helical blade is fixed on the side wall of the transmission shaft, the upper part of the assembly pipe is provided with an exhaust hole, and an oil liquid inlet of the hydraulic motor is connected with a sol motor liquid outlet of an injection molding machine. This device need not carry out the drying with the raw materials before the feeding, when having reduced to use the vacuum pump to steam treatment, because the too big unfavorable operating mode that makes the plastics raw materials block up the pump body of vacuum pump suction. The utility model also provides an injection molding machine, including above-mentioned injection molding machine screw rod feed cylinder. The injection molding machine has the advantages of the screw charging barrel of the injection molding machine.
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.
The utility model discloses still relate to an injection molding machine.
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 with the inside production of feed cylinder.
However, the above patent techniques have the following disadvantages:
1. in practical use, the connecting conduit is inevitably blocked by the raw materials due to the structure of the exhaust device, and the purpose of exhausting gas cannot be achieved at all.
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 injection molding machine screw rod feed cylinder device that rational in infrastructure, have actual exhaust function is provided.
The utility model discloses the technical problem that still need to solve provides an injection molding machine.
In order to solve the technical problem, the utility model provides an injection molding machine screw rod charging barrel device, which comprises a feeding screw rod, a charging barrel and a plurality of groups of heating mechanisms, wherein a discharging hole communicated with an inner hole of the charging barrel is formed on the end surface of the near end of the charging barrel, a feeding hole communicated with the inner hole of the charging barrel is formed on the side wall of the far end of the charging barrel, 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;
still include exhaust mechanism, open feed cylinder lateral wall top has with the communicating through-hole of feed cylinder hole, exhaust mechanism includes assembly pipe, transmission shaft, helical blade and hydraulic motor at least, assembly pipe lower extreme fixed connection is on the feed cylinder lateral wall, the assembly pipe communicates with each other through-hole and feed cylinder hole, hydraulic motor fixes in assembly pipe upper end, transmission shaft upper end is fixed with hydraulic motor's output shaft, the transmission shaft is in the assembly pipe and the transmission shaft lower extreme stretches out to feed cylinder hole direction, helical blade fixed connection is on the transmission shaft lateral wall, open on assembly pipe upper portion has the exhaust hole, hydraulic motor's fluid import links to each other with the sol motor liquid outlet of injection molding machine self, hydraulic motor's fluid export links to each other with outside oil tank.
After adopting such structure, throw into the feed cylinder with the plastics raw materials from the feed inlet, through the rotation of pay-off screw rod afterwards, melt it again and carry from plastics, the heating device cladding around the feed cylinder outer wall utilizes the plastics raw materials to carry out high temperature melting to the feed cylinder inside, melts the plastics raw materials into the plastics of molten state. When the plastic material is conveyed to the lower part of the exhaust mechanism, steam generated in the exhaust mechanism is exhausted from the exhaust hole, the transmission shaft and the helical blade are driven by the hydraulic motor of the exhaust mechanism to rotate, the plastic material entering the assembly pipe is forced to return to the inner hole of the charging barrel again, the molten plastic material in the charging barrel is conveyed forwards continuously, and finally the molten plastic material is pushed into a forming die to be cooled and shaped.
The screw material barrel device of the injection molding machine utilizes the exhaust mechanism to exhaust steam in the material barrel, so that the plastic raw material in the material barrel is always in a dry state. The injection molding machine screw charging barrel device does not need to dry the plastic raw material for 4 to 5 hours before feeding, reduces the unfavorable working condition that the plastic raw material blocks a pump body due to overlarge suction force of a vacuum pump when the vacuum pump is used for treating steam, and has the advantages of simple structure, lower production cost and higher economic significance.
In addition, the oil inlet of the hydraulic motor is connected with the liquid outlet of the sol motor of the injection molding machine, no requirement is imposed on the rotating speed and the torque of the hydraulic motor, and the plastic raw materials entering the assembly pipe can be forced to return to the inner hole of the charging barrel again only by meeting the lowest operating efficiency.
Preferably, the exhaust mechanism further comprises a cooling plate, the cooling plate is arranged between the hydraulic motor and the assembly pipe, an output shaft of the hydraulic motor penetrates through the cooling plate and then extends into the assembly pipe, a cooling channel for a cooling medium to flow through is arranged in the cooling plate, and one end of the cooling channel is communicated with the external cooling medium.
After adopting such structure, behind the cooling plate expert has coolant, can completely cut off the inside high temperature of feed cylinder to hydraulic motor's influence.
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 located in an area between the through 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 through hole of the charging barrel.
After the structure is adopted, after entering the extrusion section, the toner or the color master is fully fused with the plastic raw material by a plurality of extrusion lugs on the side wall of the feeding screw rod.
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.
As the optimization of the screw charging barrel device of the injection molding machine, a three-way pipe is arranged at an oil liquid inlet of a hydraulic motor, the inlet of the three-way pipe is communicated with a liquid outlet of a sol motor of the injection molding machine, a first outlet of the three-way pipe is communicated with the oil liquid inlet of the hydraulic motor, a second outlet of the three-way pipe is communicated with an oil tank, and a pressure relief valve is arranged on a pipeline between the second outlet of the three-way pipe and the oil tank.
After adopting such structure, hydraulic motor can retrieve the unnecessary oil pressure of sol motor on the injection molding machine and drive, because hydraulic motor is lower to the requirement of moment of torsion and rotational speed, so the oil pressure of retrieving from the sol motor can satisfy hydraulic motor's needs completely, and the design of relief valve can guarantee to retrieve too big automatic release of oil pressure at the sol motor, guarantees the security of whole set of device.
As the optimization of the screw charging barrel device of the injection molding machine, a plurality of groups of heating mechanisms are distributed at two sides of an assembly pipe of an exhaust mechanism.
In order to solve the technical problem, the utility model provides an injection molding machine, including above-mentioned injection molding machine screw rod feed cylinder.
After adopting such structure, the injection molding machine has the advantage of above-mentioned injection molding machine screw rod feed cylinder.
Drawings
FIG. 1 is a front view of an embodiment of the screw barrel assembly of the 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 screw barrel assembly of the present injection molding machine.
Fig. 4 is an enlarged view of a portion a of fig. 2.
Fig. 5 is an enlarged view of a portion B of fig. 3.
FIG. 6 is a cross-sectional view of a top view of a cooling plate in an embodiment of the screw barrel assembly of the injection molding machine.
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 denote a single embodiment.
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 screw material cylinder device of the injection molding machine comprises a feeding screw 1, a material cylinder 2, an exhaust mechanism and a plurality of groups of heating mechanisms 3.
The end face of the near end of the charging barrel 2 is provided with a discharging hole 21 communicated with an inner hole of the charging barrel, the side wall of the far end of the charging barrel 2 is provided with a feeding hole 22 communicated with the inner hole of the charging barrel, the feeding screw rod 1 extends into the inner hole of the charging barrel 2, the side wall of the feeding screw rod 1 is provided with threads, and the plurality of groups of heating mechanisms 3 are coated on the outer wall of the charging barrel 2.
The middle position of the top of the side wall of the charging barrel 2 is provided with a through hole communicated with the inner hole of the charging barrel 2, and the exhaust mechanism comprises an assembly pipe 41, a transmission shaft 44, a helical blade 45, a cooling plate 43 and a hydraulic motor 42.
The lower end of the assembly pipe 41 is welded and fixed on the side wall of the charging barrel 2, the assembly pipe 41 is communicated with the inner hole of the charging barrel 2 through a through hole, the hydraulic motor 42 is fixed on the upper side of the assembly pipe 41 through a cooling plate 43, the cooling plate 43 is arranged between the hydraulic motor 42 and the assembly pipe 41, the output shaft of the hydraulic motor 42 penetrates through the cooling plate 43 and then extends into the assembly pipe 41, a cooling channel 43a for cooling water to flow through is arranged inside the cooling plate 43, and one end of the cooling channel 43a is communicated with an external water cooling source through a hose.
The groups of heating mechanisms 3 are distributed on two sides of the assembly pipe 41 of the exhaust mechanism.
The hydraulic motor 42 is fixed on the upper end of the assembling pipe 41, the upper end of the transmission shaft 44 is fixed with the output shaft of the hydraulic motor 42, the transmission shaft 44 is positioned in the assembling pipe 41, the lower end of the transmission shaft 44 extends towards the inner hole direction of the charging barrel 2, the helical blade 45 is fixedly connected on the side wall of the transmission shaft 44, and the upper part of the assembling pipe 41 is provided with an exhaust hole 41a.
A three-way pipe 42a is installed at an oil liquid inlet of the hydraulic motor 42, an inlet of the three-way pipe 42a is communicated with a liquid outlet of a sol motor of the injection molding machine, a first outlet of the three-way pipe 42a is communicated with the oil liquid inlet of the hydraulic motor 42, a second outlet of the three-way pipe 42a is communicated with an oil tank, and a pressure relief valve 42b is arranged on a pipeline between the second outlet of the three-way pipe 42a and the oil tank.
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 through 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 through 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.
When the screw charging barrel device of the injection molding machine works, firstly, plastic raw materials are put into the charging barrel 2 from the feeding port 22, then, the feeding screw 1 rotates and is continuously conveyed to the plastic control propulsion section from the plastic melting propulsion section, and the heating mechanism 3 which is coated on the periphery of the outer wall of the charging barrel 2 melts the plastic raw materials in the charging barrel 2 into molten plastic by utilizing high temperature melting.
In the process that the plastic raw material flows from the feed opening 22 of the charging barrel 2 to the through hole, 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 conveyed to the discharge opening 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 toner or color master is fully fused with the plastic raw material by a plurality of extrusion lugs 11a on the side wall of the feeding screw rod 1.
The plastic material in the molten state is continuously fed forward, and when it is fed to the lower side of the air discharging mechanism, the steam generated in the interior thereof is discharged from the air discharging hole 41a, and the drive shaft 44 and the spiral blade 45 are driven to rotate by the hydraulic motor 42 of the air discharging mechanism, so that the plastic material entering the assembling pipe 41 is forced to return to the inner hole of the barrel 2.
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 injection molding machine produced by utilizing the injection molding machine screw charging barrel 2 device has the advantages of the injection molding machine screw charging barrel 2 device.
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 considered as belonging to the protection scope of the present invention.
Claims (8)
1. A screw charging barrel device of an injection molding machine 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 feeding hole 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 formed in 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;
it is characterized in that:
still include exhaust mechanism, feed cylinder lateral wall top is opened there is the communicating through-hole with the feed cylinder hole, exhaust mechanism includes assembly pipe, the transmission shaft, helical blade and hydraulic motor at least, assembly pipe lower extreme fixed connection is on the feed cylinder lateral wall, the assembly pipe communicates with each other with the feed cylinder hole through the through-hole, hydraulic motor fixes in the assembly pipe upper end, the transmission shaft upper end is fixed with hydraulic motor's output shaft, the transmission shaft is in the assembly pipe and the transmission shaft lower extreme stretches out to feed cylinder hole direction, helical blade fixed connection is on the transmission shaft lateral wall, assembly pipe upper portion is opened there is the exhaust hole, hydraulic motor's fluid import links to each other with the sol motor liquid outlet of injection molding machine self, hydraulic motor's fluid export links to each other with outside oil tank.
2. The injection molding machine screw barrel assembly of claim 1, wherein:
the exhaust mechanism further comprises a cooling plate, the cooling plate is arranged between the hydraulic motor and the assembly pipe, an output shaft of the hydraulic motor penetrates through the cooling plate and then extends into the assembly pipe, a cooling channel for a cooling medium to flow through is arranged inside the cooling plate, and one end of the cooling channel is communicated with the external cooling medium.
3. The 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 located in an area between the through 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 through hole of the charging barrel.
4. The 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 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.
6. The injection molding machine screw barrel assembly of claim 1, wherein:
the three-way pipe is installed at the oil liquid inlet of the hydraulic motor, the inlet of the three-way pipe is communicated with the liquid outlet of the injection molding machine self sol motor, the first outlet of the three-way pipe is communicated with the oil liquid inlet of the hydraulic motor, the second outlet of the three-way pipe is communicated with the oil tank, and a pressure relief valve is arranged on a pipeline between the second outlet of the three-way pipe and the oil tank.
7. The injection molding machine screw barrel assembly of claim 1, wherein:
the multiple groups of heating mechanisms are distributed on two sides of the assembly pipe of the exhaust mechanism.
8. An injection molding machine comprising the injection molding machine screw barrel of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223291421.3U CN218803810U (en) | 2022-12-08 | 2022-12-08 | Injection molding machine screw rod feed cylinder device and injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223291421.3U CN218803810U (en) | 2022-12-08 | 2022-12-08 | Injection molding machine screw rod feed cylinder device and injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218803810U true CN218803810U (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223291421.3U Active CN218803810U (en) | 2022-12-08 | 2022-12-08 | Injection molding machine screw rod feed cylinder device and injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218803810U (en) |
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2022
- 2022-12-08 CN CN202223291421.3U patent/CN218803810U/en active Active
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