CN214982692U - Plasticizing injection molding device of exhaust type injection molding machine - Google Patents
Plasticizing injection molding device of exhaust type injection molding machine Download PDFInfo
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- CN214982692U CN214982692U CN202121271603.7U CN202121271603U CN214982692U CN 214982692 U CN214982692 U CN 214982692U CN 202121271603 U CN202121271603 U CN 202121271603U CN 214982692 U CN214982692 U CN 214982692U
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- injection
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- injection molding
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 63
- 238000002347 injection Methods 0.000 claims abstract description 90
- 239000007924 injection Substances 0.000 claims abstract description 90
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 22
- 239000000155 melt Substances 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims abstract description 9
- 230000009467 reduction Effects 0.000 claims description 16
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 5
- 238000001035 drying Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a plasticizing injection molding device of an exhaust type injection molding machine, which mainly comprises an injection molding seat moving oil cylinder, a guide rail, a machine barrel screw rod integral moving oil cylinder, a machine barrel screw rod supporting seat, a sealing assembly, a thrust bearing group, a screw rod, a machine barrel, a plasticizing driving system, a hopper, a heating ring, an exhaust system, an injection sleeve, a supporting structure, a nozzle and other parts. The cylinder is provided with an exhaust hole which can exhaust moisture or volatile substances in the plasticizing process. The well-plasticized melt flows into the cavity of the injection molding sleeve for storage. During injection molding, the screw firstly moves forwards under the action of the screw pushing cylinder, so that the screw seals the outlet of the machine barrel. Then under the action of the cylinder and the screw rod moving integrally, the cylinder and the screw rod move forwards together, and the melt in the injection molding sleeve is ejected from the nozzle to form a product. The device structure of the invention is simpler than the plasticizing injection device of a common injection molding machine, and raw material drying equipment is saved. The screw structure is similar to that of a single-screw exhaust extruder, and the processing cost is reduced.
Description
Technical Field
The invention relates to the technical field of injection molding machines, in particular to a plasticizing and injection device of an exhaust type injection molding machine.
Background
The conventional injection molding machine needs to dry the raw materials before feeding, so that the water in the raw materials is reduced, and therefore, external connection of equipment such as a dryer or a dehumidifier is needed, the equipment cost is increased, the structure is complex, and the energy consumption of an injection molding system is increased.
The current demand for vented injection molding machines is becoming more and more evident. When the exhaust type injection molding machine works, raw materials of a plastic melt are melted and compressed under the extrusion action of a machine barrel and a screw, then the melt is decompressed, gas in the melt expands, bubbles are separated from the melt after being broken, and the gas is exhausted from the equipment. Therefore, when the water content of the material is too high and volatile components are generated in the processing process, the material can be discharged in time, and the quality defect of products cannot be caused.
The equipment combination cost of present exhaust type injection molding machine is high, and the screw rod needs to be customized again, and the processing requirement of barrel is higher. Meanwhile, in the production process, the production efficiency is low due to the feeding mode of starvation feeding.
Disclosure of Invention
The invention aims to provide a plasticizing and injection device of an exhaust type injection molding machine, and the structure relates to the technical field of injection molding machines. The device mainly comprises an injection molding base moving oil cylinder, a guide rail, a machine barrel screw rod integral moving oil cylinder, a machine barrel screw rod supporting seat, a sealing assembly, a thrust bearing group, a screw rod, a machine barrel, a plasticizing driving system, a hopper, a heating ring, an exhaust system, an injection molding sleeve, a supporting structure, a nozzle and other parts. The main characteristics are as follows: during plasticizing, the plasticizing driving system enables the screw to rotate for plasticizing. And the machine barrel is provided with an exhaust hole which is connected with an exhaust system and used for exhausting moisture or volatile substances in the plasticizing process. The well-plasticized melt flows into the cavity of the injection molding sleeve. During injection molding, the screw firstly moves forwards under the action of the screw pushing cylinder, so that the screw seals the outlet of the machine barrel. Then under the action of the cylinder and the screw rod moving integrally, the cylinder and the screw rod move forwards together, and the melt in the injection molding sleeve is ejected from the nozzle to form a product. The device of the invention has a simpler structure than a plasticizing injection device of a common injection molding machine, and saves raw material drying equipment. The screw structure is similar to that of a single-screw exhaust extruder, and the processing cost is reduced.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a plasticizing and injection molding device of an exhaust type injection molding machine, which mainly comprises the following functional components: the injection molding machine comprises an injection molding seat moving oil cylinder, an injection base and an injection seat linear guide rail, wherein the injection molding seat moving oil cylinder is used for realizing the forward and backward movement of the whole injection seat; the driving system for realizing the rotation of the screw comprises a motor, a reduction box body, a left thrust bearing, a gear, a right thrust bearing and an adjusting gasket, wherein a sliding key is fixed on the gear and transmits power to the screw, but the forward and backward movement of the screw is not influenced; a hopper, a machine barrel, a screw and a heater for realizing melt plasticization; an exhaust seat, a guide plate, a hydraulic cylinder and an exhaust piston for realizing the exhaust in the plasticizing process; the screw rod pushing cylinder, the screw rod piston, the piston sealing assembly, the screw rod pushing cylinder sealing assembly and the machine barrel sealing assembly realize the forward and backward movement of the screw rod; the injection device comprises a barrel screw integral moving oil cylinder, an injection base, a barrel screw supporting seat and a supporting seat linear guide rail, wherein the barrel screw integral moving oil cylinder is used for realizing the integral movement of a barrel screw; realize a section of thick bamboo, nozzle, the injection tube supporting seat of moulding plastics of fuse-element shaping goods, the injection tube supporting seat passes through bolted connection or welded fastening on the injection base, adopts bolted connection between injection tube supporting seat and the injection tube, and the injection tube front end adopts threaded connection with the nozzle, screws up the nozzle on the injection tube.
After the materials enter from the hopper, the materials are conveyed forwards through the feeding section of the screw rod, are compacted and melted through the first-stage compression section and then enter the exhaust section for pressure release and exhaust, at the moment, the hydraulic cylinder of the exhaust device acts to press the exhaust piston downwards, so that the inner space of the machine barrel is communicated with the external environment through the exhaust through hole of the exhaust seat. Moisture and volatile substances in the materials are discharged, the melt is conveyed to a second-order compression section to be compacted again, and finally is conveyed into a melt storage cavity of the injection cylinder through a screw metering section, and finally enters a mold forming product after injection.
The screw rod needs to rotate in the plasticizing process and is realized by a motor and a reduction gearbox assembly. The left thrust bearing, the gear, the right thrust bearing and the adjusting gasket are sequentially arranged in the speed reduction box body, the power of the motor is input to the power input shaft of the speed reduction box and is transmitted to the screw rod through the gear speed reduction system and the sliding key, and the plasticizing process of the melt between the machine barrel and the screw rod is completed.
The screw rod sets up the exhaust section, has seted up the exhaust through-hole on corresponding the barrel, and there is the exhaust seat in the barrel outside through bolted connection, and the inside cavity shape of exhaust seat is the toper, and internally mounted has a gas discharge piston, and the inside and outside exhaust hole intercommunication that runs through of accessible of exhaust seat, exhaust seat upside have connect deflector and pneumatic cylinder, and the exhaust action is driven by the pneumatic cylinder, and during the plastify exhaust, the pneumatic cylinder drive gas discharge piston pushes down, and the barrel cavity is put through with the external world and is realized exhausting. When the air is not needed to be exhausted, the air exhaust piston ascends to cut off the connection between the hollow cavity of the machine barrel and the outside.
In the injection process, the well-plasticized melt flows into the cavity of the injection tube, after the material storage is finished, the screw stops rotating, the screw pushes the cylinder to act, the screw piston is pushed to move forwards, the screw is driven to move forwards, and the head of the screw is in close contact with the front end of the machine barrel to form a sealed whole. And then the machine barrel screw integrally moves the oil cylinder to act, the machine barrel screw supporting seat is pulled to move forwards, and the melt in the injection cylinder is integrally compressed by the closed machine barrel screw to be injected through the nozzle, so that the injection process is finished. In the injection molding process, the screw only needs to move quantitatively for a fixed distance, namely the distance for moving the screw piston is the same every time, and the extrusion and the closing of the melt in the cylinder can be realized.
In the production and use process, the whole injection seat is driven by the two injection seat moving oil cylinders, so that the nozzle of the injection platform can be moved to the gate position of the mold. During injection, the integral movement of the machine barrel screw rod supporting seat is driven by the two machine barrel screw rod integral movement oil cylinders, so that the injection process is rapid and stable. The heaters are arranged on the outer side of the machine barrel and the outer side of the injection cylinder, and the part of the machine barrel connected with the injection cylinder needs to be exposed, so that the heaters cannot be arranged to ensure the injection stroke.
The invention provides a plasticizing injection molding device of an exhaust type injection molding machine, which has the advantages that:
(1) the existing injection molding machine needs to dry materials, and the product defects can be caused by excessive water content and volatile substances in the processing process. And a dryer or a drier device is additionally arranged, so that the structure is complex. The device can be used without drying equipment, and can remove water and volatile matters during the operation of the equipment.
(2) The plasticizing screw of the injection molding machine provided by the invention has a simple structure, the injection molding process can be realized by using the exhaust screw of the extruder, the screw structure is simplified, and a better plasticizing effect can be realized by adding different screw elements.
(3) The movement of the machine barrel screw and the integral movement of the injection seat are realized through the linear guide rail, the action is more accurate, and the precision is higher.
(4) Compared with the existing plasticizing injection molding machine, the plasticizing injection molding device of the exhaust type injection molding machine provided by the invention has the advantages of simpler structure and lower manufacturing cost.
Drawings
FIG. 1 is a schematic structural view of a plasticizing injection device of the exhaust injection molding machine of the present invention;
FIG. 2 is a schematic diagram showing the arrangement of an oil cylinder and a linear guide rail of a plasticizing injection device of the exhaust type injection molding machine according to the present invention;
FIG. 3 is a schematic view of the screw head and barrel of the screw barrel of the present invention during plasticizing;
FIG. 4 is a schematic view of the screw head and barrel of the screw barrel of the present invention during injection;
FIG. 5 is a schematic view of the vent structure on the cylinder of the present invention.
In the figure, 1-an injection seat moving oil cylinder, 2-a machine barrel screw rod integral moving oil cylinder, 3-an injection seat base, 4-a machine barrel screw rod supporting seat, 5-a machine barrel sealing component, 6-a left side thrust bearing, 7-a gear, 8-a right side thrust bearing, 9-an adjusting gasket, 10-a supporting seat linear guide rail, 11-an injection seat linear guide rail, 12-a screw rod pushing cylinder, 13-a screw rod piston, 14-a piston sealing component, 15-a screw rod pushing cylinder sealing component, 16-a motor, 17-a reduction gearbox box body, 18-a hopper, 19-a heating ring, 20-a machine barrel, 21-an exhaust seat, 22-a guide plate, 23-a hydraulic cylinder, 24-an exhaust piston, 25-a screw rod, 26-an injection barrel supporting seat, 26-a injection barrel supporting seat, a piston and a piston rod, a piston, 27-injection cylinder, 28-nozzle, 101-injection seat moving cylinder b and 202-cylinder screw integral moving cylinder b.
Detailed Description
The invention is further illustrated by the following specific examples. The following description is only a few embodiments, and any non-inventive substitutions or modifications based on the embodiments of the present invention may be made to other embodiments within the scope of the present invention.
In the description of the present invention, the terms "center", "upper side", "lower side", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used to indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience of description and simplification of description, but not to indicate or imply that the device or element referred to must have a specific orientation, configuration, and operation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the terms "mounted," "connected," and "connected" are used in a generic sense unless explicitly defined or limited otherwise. Examples are: the connection can be a fixed connection, a detachable connection or an integrated connection; may be directly connected or indirectly connected through an intermediate. The driving device may be motor-driven or hydraulically driven. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
The invention provides a plasticizing and injection molding device of an exhaust type injection molding machine, which mainly comprises the following functional components as shown in figures 1 and 2: the injection molding machine comprises an injection molding seat moving oil cylinder 1, an injection base 3 and an injection seat linear guide rail 11, wherein the injection molding seat moving oil cylinder 1 is used for realizing the forward and backward movement of the whole injection seat, the cylinder body of the injection molding seat moving oil cylinder 1 is fixed on the injection base 3, a piston rod is connected to the body of the injection molding machine, and the injection seat linear guide rail 11 is laid between the injection base 3 and the body of the injection molding machine, so that the low-friction movement between an injection molding part and the body is realized; the driving system for realizing the rotation of the screw comprises a motor 16, a reduction box body 17, a left thrust bearing 6, a gear 7, a right thrust bearing 8 and an adjusting gasket 9, wherein a sliding key is fixed on the gear, so that the power is transmitted to the screw 25, but the forward and backward movement of the screw 25 is not influenced; a hopper 18, a machine barrel 20, a screw 25 and a heater 19 for realizing melt plasticization; an exhaust seat 21, a guide plate 22, a hydraulic cylinder 23 and an exhaust piston 24 for realizing the exhaust in the plasticizing process; the screw rod pushing cylinder 12, the screw rod piston 13, the piston sealing assembly 14, the screw rod pushing cylinder sealing assembly 15 and the machine barrel sealing assembly 5 are used for realizing the forward and backward movement of the screw rod; the machine barrel screw integral moving oil cylinder 2, the injection base 3, the machine barrel screw supporting seat 4 and the supporting seat linear guide rail 10 are used for realizing the integral movement of the machine barrel screw, one end of the machine barrel screw integral moving oil cylinder 2 is connected with the machine barrel screw supporting frame 4, the other end of the machine barrel screw integral moving oil cylinder is connected with the injection base 3, and a group of supporting seat linear guide rails 10 are laid between the injection base 3 and the screw machine barrel supporting frame 4, so that the low-friction movement is realized between the injection base and the screw machine barrel supporting frame; realize spare parts such as a section of thick bamboo 27, nozzle 28, injection tube supporting seat 26 of fuse-element shaping goods, injection tube supporting seat 26 passes through bolted connection or welded fastening on injection base 3, adopts bolted connection between injection tube supporting seat 26 and the injection tube 27, and injection tube 27 front end adopts threaded connection with nozzle 28, screws up nozzle 28 on injection tube 27.
After the material enters from the hopper 18, the material is conveyed forwards through the feeding section of the screw 25, the material is compacted and melted through a first-stage compression section, and then enters the exhaust section for pressure release and exhaust, at the moment, the hydraulic cylinder 23 of the exhaust device acts to press the exhaust piston 24 downwards, so that the inner space of the machine barrel is communicated with the external environment through the exhaust through hole of the exhaust seat, and the specific structure is shown in fig. 5. Moisture and volatile substances in the materials are discharged, the melt is conveyed to a second-order compression section to be compacted again, and finally is conveyed into a melt storage cavity of an injection tube 27 through a metering section of a screw 25, and finally is injected into a mold forming product.
The screw 25 needs to rotate in the plasticizing process and is realized by a motor and a reduction gearbox component. The left thrust bearing 6, the gear 7, the right thrust bearing 8 and the adjusting gasket 9 are sequentially arranged in the reduction gearbox body, the power of the motor 16 is input to a power input shaft of the reduction gearbox and is transmitted to the screw rod 25 through the gear reduction system and the sliding key, and the plasticizing process of the melt between the machine barrel 20 and the screw rod 25 is completed.
The screw 25 is provided with an exhaust section, an exhaust through hole is formed in the corresponding machine barrel, the outer side of the machine barrel 20 is connected with an exhaust seat 21 through a bolt, the inner cavity of the exhaust seat 21 is conical, an exhaust piston 24 is installed inside the exhaust seat 21, the inside and the outside of the exhaust seat 21 can be communicated through a through exhaust hole, a guide plate 22 and a hydraulic cylinder 23 are connected to the upper side of the exhaust seat 21, the exhaust action is driven by the hydraulic cylinder 23, during plasticizing and exhausting, the hydraulic cylinder 23 drives the exhaust piston 24 to press downwards, and the cavity of the machine barrel 20 is communicated with the outside to achieve exhausting. When venting is not desired, the vent piston 24 is raised to cut off the cavity of the barrel 20 from communication with the environment.
In the injection process, the plasticized melt flows into the cavity of the injection tube 27, the states of the front ends of the cylinder 20 and the screw 25 in the storage process are shown in fig. 3, after the storage is finished, the screw 25 stops rotating, the right side of the screw pushing cylinder 12 is fed with oil to push the screw piston 13 to move forward, the screw 25 is driven to move forward, the head of the screw 25 is in close contact with the front end of the cylinder 20 to form a sealed whole, and the states of the closed front ends of the cylinder 20 and the screw 25 are shown in fig. 4. Then the cylinder 2 is moved by the machine barrel screw rod, the machine barrel screw rod supporting seat 4 is pulled to move forwards, the melt in the injection cylinder 27 is compressed by the closed whole formed by the machine barrel screw rod, and the melt is ejected through the nozzle 28, so that the injection process is completed. During the injection molding process, the screw 25 only needs to move a fixed distance quantitatively, that is, the screw piston 13 moves the same distance each time, so as to extrude and close the melt in the cylinder 20.
During production and use, the integral movement of the injection seat is driven by two injection seat moving oil cylinders, namely the injection seat moving oil cylinder 1 and the injection seat moving oil cylinder b 101 act simultaneously, so that the nozzle 28 of the injection molding device can move to the gate position of the mold. During injection, the integral movement of the barrel screw supporting seat is driven by two barrel screw integral moving oil cylinders, namely the barrel screw integral moving oil cylinder 2 and the barrel screw integral moving oil cylinder b 202, so that the injection process is rapid and stable. The heater 19 is disposed outside the cylinder 20 and outside the syringe 27, and the portion of the cylinder 20 connected to the syringe 27 needs to be exposed, and the heater 19 cannot be disposed to ensure the injection stroke.
Claims (4)
1. The utility model provides a plastify device of moulding plastics of exhaust formula injection molding machine which characterized in that: the method mainly comprises the following functional components: the injection molding machine comprises an injection molding seat moving oil cylinder, an injection base and an injection seat linear guide rail, wherein the injection molding seat moving oil cylinder is used for realizing the forward and backward movement of the whole injection seat; the driving system for realizing the rotation of the screw comprises a motor, a reduction box body, a left thrust bearing, a gear, a right thrust bearing and an adjusting gasket, wherein a sliding key is fixed on the gear and transmits power to the screw, but the forward and backward movement of the screw is not influenced; a hopper, a machine barrel, a screw and a heater for realizing melt plasticization; an exhaust seat, a guide plate, a hydraulic cylinder and an exhaust piston for realizing the exhaust in the plasticizing process; the screw rod pushing cylinder, the screw rod piston, the piston sealing assembly, the screw rod pushing cylinder sealing assembly and the machine barrel sealing assembly realize the forward and backward movement of the screw rod; the injection device comprises a barrel screw integral moving oil cylinder, an injection base, a barrel screw supporting seat and a supporting seat linear guide rail, wherein the barrel screw integral moving oil cylinder is used for realizing the integral movement of a barrel screw; realize a section of thick bamboo, nozzle, the injection tube supporting seat of moulding plastics of fuse-element shaping goods, the injection tube supporting seat passes through bolted connection or welded fastening on the injection base, adopts bolted connection between injection tube supporting seat and the injection tube, and the injection tube front end adopts threaded connection with the nozzle, screws up the nozzle on the injection tube.
2. A plasticizing injection molding apparatus of an exhaust type injection molding machine according to claim 1, characterized in that: the screw rod needs to rotate in the plasticizing process and is realized by a motor and a reduction gearbox assembly, the left thrust bearing, the gear, the right thrust bearing and the adjusting gasket are sequentially arranged in the reduction gearbox, the power of the motor is input into a power input shaft of the reduction gearbox and is transmitted to the screw rod through a gear reduction system and a sliding key, and the plasticizing process of the melt between the machine barrel and the screw rod is completed.
3. A plasticizing injection molding apparatus of an exhaust type injection molding machine according to claim 1, characterized in that: the screw is provided with an exhaust section, an exhaust through hole is formed in the corresponding machine barrel, the outer side of the machine barrel is connected with an exhaust seat through a bolt, the shape of an inner cavity of the exhaust seat is conical, an exhaust piston is arranged in the exhaust seat, the inside and the outside of the exhaust seat can be communicated through a through exhaust hole, a guide plate and a hydraulic cylinder are connected to the upper side of the exhaust seat, the exhaust action is driven by the hydraulic cylinder, the hydraulic cylinder drives the exhaust piston to press downwards during plasticizing exhaust, and a cavity of the machine barrel is communicated with the outside to realize exhaust; when the air is not needed to be exhausted, the air exhaust piston ascends to cut off the connection between the hollow cavity of the machine barrel and the outside.
4. A plasticizing injection molding apparatus of an exhaust type injection molding machine according to claim 1, characterized in that: the integral movement of the injection seat is driven by the two injection seat moving oil cylinders, so that a nozzle of the injection platform can move to a sprue position of a mold, and the integral movement of the machine barrel screw rod supporting seat is driven by the two machine barrel screw rod integral moving oil cylinders, so that the injection process is rapid and stable; the heaters are arranged on the outer side of the machine barrel and the outer side of the injection cylinder, and the part of the machine barrel connected with the injection cylinder needs to be exposed, so that the heaters cannot be arranged to ensure the injection stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121271603.7U CN214982692U (en) | 2021-06-08 | 2021-06-08 | Plasticizing injection molding device of exhaust type injection molding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121271603.7U CN214982692U (en) | 2021-06-08 | 2021-06-08 | Plasticizing injection molding device of exhaust type injection molding machine |
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| CN214982692U true CN214982692U (en) | 2021-12-03 |
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| CN202121271603.7U Withdrawn - After Issue CN214982692U (en) | 2021-06-08 | 2021-06-08 | Plasticizing injection molding device of exhaust type injection molding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290775A (en) * | 2021-06-08 | 2021-08-24 | 北京化工大学 | Plasticizing injection molding device of exhaust type injection molding machine |
-
2021
- 2021-06-08 CN CN202121271603.7U patent/CN214982692U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290775A (en) * | 2021-06-08 | 2021-08-24 | 北京化工大学 | Plasticizing injection molding device of exhaust type injection molding machine |
| CN113290775B (en) * | 2021-06-08 | 2024-05-28 | 北京化工大学 | Plasticizing injection molding device of exhaust type injection molding machine |
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