CN109624216B - Ultra-high-speed injection molding machine with cooling nozzle - Google Patents
Ultra-high-speed injection molding machine with cooling nozzle Download PDFInfo
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- CN109624216B CN109624216B CN201910020305.1A CN201910020305A CN109624216B CN 109624216 B CN109624216 B CN 109624216B CN 201910020305 A CN201910020305 A CN 201910020305A CN 109624216 B CN109624216 B CN 109624216B
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- nozzle
- injection molding
- injection
- heat
- liquid nitrogen
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 64
- 238000001816 cooling Methods 0.000 title claims abstract description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000002347 injection Methods 0.000 claims abstract description 48
- 239000007924 injection Substances 0.000 claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims abstract description 10
- 238000007906 compression Methods 0.000 claims abstract description 10
- 239000000155 melt Substances 0.000 claims description 27
- 239000007921 spray Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 9
- 239000000047 product Substances 0.000 description 8
- 238000012545 processing Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/20—Injection nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/74—Heating or cooling of the injection unit
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an ultra-high speed injection molding machine with a cooling nozzle, which mainly comprises an internal cooling part, an external circulation part and a temperature compensation part. The injection nozzle is connected in the same way as a conventional nozzle, i.e. the nozzle tip is screwed into the position of the barrel at the front end of the injection screw. The cooling part inside the injection nozzle mainly comprises a nozzle head, a nozzle shell, a front sealing ring, a heat-insulating inner cylinder, a rear sealing ring, a heat-insulating outer cylinder, a sealing ring, an injection nozzle coated with graphene, a liquid nitrogen chamber, a vacuum valve and the like. The external circulation part of the injection nozzle mainly comprises a liquid nitrogen circulation pipeline, an outlet one-way valve, a circulation compression pump, a cryocooler, a flow regulating valve, an inlet one-way valve and the like. The temperature compensation part mainly comprises a temperature compensation cylinder, a heating rod, a high-precision temperature sensor and the like. The invention effectively cools the high-temperature ultrahigh-speed injection molding melt at the nozzle, and prevents the material at the nozzle from being burnt and overheat decomposed.
Description
Technical Field
The invention relates to an ultra-high speed injection molding machine with a cooling nozzle, and belongs to the field of injection molding machinery.
Background
With the continuous development of manufacturing industry, plastic products are widely used in various industries, and injection molding is also an important mode for mainly forming plastic products. Therefore, injection molding machines are continuously developed in the entire plastic processing field. In general, injection molding machines are mainly divided into injection, mold closing, hydraulic, electric and other parts, plastic raw materials enter through a feed port, are heated and melted by a plasticizing system, are pushed into a mold by a screw rod, are cooled for a period of time, and are pressurized, and then the mold is opened to finish a product.
In recent years, electronic products are represented, and the ultra-light, ultra-thin and ultra-precise directions are developed, so that the conventional injection molding machine is gradually unable to meet the molding requirement, and the ultra-high speed injection system is rapidly developed with the advantages of the ultra-high speed injection system in the aspect. Generally, the injection screw advancing speed of 800mm/s or more is called ultra-high speed injection. However, the injection speed is high, and the melt is subjected to high shearing action in the injection nozzle to generate a large amount of heat, so that the material is burnt due to the rapid temperature rise, and the material is decomposed when serious. The processing temperature of materials of common injection products is about 200-250 ℃ during injection, and the temperature of the materials can reach more than 400 ℃ during injection due to high-shear heat generation effect, so that the cooling temperature gradient of the injection products in a die cavity is too high, internal stress is generated, and the product quality is affected.
In the Studies of theory, simulation and test of shear heating of melt during injection, of the university of Sichuan, it is mentioned that non-Newtonian fluids have viscous heating at the nozzle during injection, and that changes in melt temperature and distribution affect certain physical properties of the polymer, the mold filling process and the final product. It is therefore of interest to achieve an effective control of the melt temperature by improving the nozzle.
Disclosure of Invention
The invention aims to provide a super-high-speed injection molding machine with a cooling nozzle, which solves the problems of overheating, burning and decomposition of materials at the nozzle caused by the over-high injection speed of the existing super-high-speed injection molding machine, reduces the temperature of injection melt and obtains high-quality super-high-speed injection molding products.
The technical scheme for realizing the aim is as follows: an ultra-high-speed injection molding machine with a cooling nozzle mainly comprises a hydraulic part, a mold clamping part, an injection nozzle, an injection part, an electric part and the like. Wherein the injection nozzle mainly comprises an internal cooling part, an external circulation part and a temperature compensation part. The injection nozzle is connected in the same way as a conventional nozzle, i.e. the end of the injection nozzle is connected with the end position of the front end barrel of the injection screw by threads.
The invention relates to an ultra-high speed injection molding machine with a cooling nozzle, wherein an internal cooling part of the injection nozzle mainly comprises a nozzle head, a nozzle shell, a front sealing ring, a heat-insulating inner cylinder, a rear sealing ring, a heat-insulating outer cylinder, a sealing ring, an injection molding spray pipe plated with graphene, a liquid nitrogen chamber, a vacuum cavity, a vacuum valve and the like. The injection molding spray pipe coated with graphene, the heat insulation inner cylinder body and the front sealing ring enclose a liquid nitrogen chamber, the injection molding melt exchanges heat with liquid nitrogen through the injection molding spray pipe wall, and the surface of the injection molding spray pipe is coated with graphene, so that the heat conductivity coefficient of the injection molding spray pipe can be increased, and the heat transfer efficiency is improved; the heat-insulating inner cylinder body, the heat-insulating outer cylinder body and the sealing ring enclose a vacuum cavity, and a vacuum environment is established by air extraction operation of the vacuum valve arranged on the outer cylinder body, so that heat exchange between liquid nitrogen and the outside is avoided.
The invention relates to an ultra-high speed injection molding machine with a cooling nozzle, wherein an external circulation part of the injection nozzle mainly comprises a liquid nitrogen circulation pipeline, an outlet one-way valve, a circulation compression pump, a low-temperature refrigerator, a flow regulating valve, an inlet one-way valve and the like. The liquid nitrogen absorbs heat and is gasified and then enters the outside through the outlet one-way valve from the nozzle, the liquid nitrogen is compressed through the circulating compression pump, then is cooled and liquefied through the cryocooler, and finally returns to the liquid nitrogen chamber in the injection nozzle through the inlet one-way pump, so that the circulating process is completed. The circulating compression pump provides power for the circulating process, and the outlet check valve and the inlet check valve ensure the circulating direction. The flow regulating valve regulates the flow of liquid nitrogen according to the temperature and other conditions of the melt at the nozzle so as to control the cooling degree of the melt.
The invention relates to an ultra-high speed injection molding machine with a cooling nozzle, which mainly comprises a temperature compensation cylinder, a heating ring, a high-precision temperature sensor and the like. The temperature compensation cylinder is positioned between the heat-insulating inner cylinder and the injection molding spray pipe coated with the graphene, two ends of the temperature compensation cylinder are respectively in interference fit with the heat-insulating inner cylinder and the injection molding spray pipe coated with the graphene, and the temperature compensation cylinders are distributed at a certain distance. The temperature compensation cylinder body is disc-shaped, and is provided with a liquid nitrogen passing hole. The heating ring is positioned in the temperature compensation cylinder close to one end of the injection molding spray pipe plated with graphene, and temperature compensation is performed on the melt. The high-precision temperature sensor is positioned in the nozzle shell and close to the nozzle head, and the measuring head of the high-precision temperature sensor is directly contacted with the melt to measure the temperature of the melt at the nozzle head in real time.
When the injection molding machine is started, as the solidified melt which is solidified in the last work is remained in the injection molding spray pipe plated with the graphene, the heating ring of the temperature compensation part is started, solidified residual materials are melted and discharged from the nozzle head, and then the heating ring stops working. When the injection molding machine works normally, the high-precision temperature sensor monitors the temperature of the melt at the nozzle head in real time, and when the temperature of the melt is found to be too low, the heating ring is triggered to start, so that the temperature of the melt is compensated in real time; when the temperature of the melt is too high, triggering a flow regulating valve to start, and regulating the flow of liquid nitrogen to control the cooling degree of the melt; when the melt temperature is in the normal range, the heating ring does not work, and the flow regulating valve does not regulate.
The ultra-high speed injection molding machine with the cooling nozzle has the beneficial effects that the high-temperature ultra-high speed injection molding melt at the nozzle is effectively cooled, and the conditions of scorching and overheat decomposition of materials at the nozzle are prevented. The injection molding melt is ensured to be in an ideal processing temperature range before entering the die, the quality of a final product is ensured, and the injection molding melt is convenient to process and manufacture and easy to maintain.
Drawings
FIG. 1 is a schematic view of an ultra-high speed injection molding machine with a cooling nozzle according to the present invention.
FIG. 2 is a schematic view of an injection nozzle of an ultra-high speed injection molding machine with a cooling nozzle according to the present invention.
In the figure: 1. the hydraulic part, the mold clamping part, the injection nozzle, the injection part and the electric part are respectively arranged in the specification.
Wherein: 3-1 parts of nozzle head, 3-2 parts of nozzle shell, 3-3 parts of front sealing ring, 3-4 parts of heat-insulating inner cylinder, 3-5 parts of rear sealing ring, 3-6 parts of heat-insulating outer cylinder, 3-7 parts of sealing ring, 3-8 parts of injection molding spray pipe plated with graphene, 3-9 parts of liquid nitrogen chamber, 3-10 parts of vacuum chamber, 3-11 parts of vacuum valve, 3-12 parts of liquid nitrogen circulating pipeline, 3-13 parts of outlet one-way valve, 3-14 parts of circulating compression pump, 3-15 parts of cryocooler, 3-16 parts of flow regulating valve, 3-17 parts of inlet one-way valve, 3-18 parts of temperature compensation cylinder, 3-19 parts of heating ring and 3-20 parts of high-precision temperature sensor.
Detailed Description
The invention relates to an ultra-high speed injection molding machine with a cooling nozzle, which is shown in figure 1 and mainly comprises a hydraulic part 1, a mold clamping part 2, an injection nozzle 3, an injection part 4, an electric part 5 and the like. Wherein the injection nozzle 3 mainly comprises an internal cooling part, an external circulation part and a temperature compensation part. The injection nozzle 3 is connected in the same way as a conventional nozzle, i.e. the nozzle tip is screwed into the injection screw at the front barrel.
The invention relates to an ultra-high speed injection molding machine with a cooling nozzle, wherein the internal cooling part of an injection nozzle 3 is shown in figure 2, and the ultra-high speed injection molding machine mainly comprises a nozzle head 3-1, a nozzle shell 3-2, a front sealing ring 3-3, a heat insulation inner cylinder body 3-4, a rear sealing ring 3-5, a heat insulation outer cylinder body 3-6, a sealing ring 3-7, an injection molding spray pipe 3-8 plated with graphene, a liquid nitrogen chamber 3-9, a vacuum cavity 3-10, a vacuum valve 3-11 and the like. The injection molding spray pipe 3-8 coated with graphene, the heat insulation inner cylinder body 3-4 and the front sealing ring 3-3 enclose a liquid nitrogen chamber 3-9, the injection molding melt exchanges heat with liquid nitrogen through the injection molding spray pipe wall, and the surface of the injection molding spray pipe is coated with graphene, so that the heat conductivity coefficient of the injection molding spray pipe can be increased, and the heat transfer efficiency is improved; the heat-insulating inner cylinder 3-4, the heat-insulating outer cylinder 3-6 and the sealing ring 3-7 enclose a vacuum cavity 3-10, and a vacuum environment is established by air extraction operation through a vacuum valve 3-11 arranged on the outer cylinder, so that heat exchange between liquid nitrogen and the outside is avoided.
The invention relates to an ultra-high speed injection molding machine with a cooling nozzle, wherein the external circulation part of an injection nozzle 3 is shown in figure 2, and mainly comprises a liquid nitrogen circulation pipeline 3-12, an outlet one-way valve 3-13, a circulation compression pump 3-14, a cryocooler 3-15, a flow regulating valve 3-16, an inlet one-way valve 3-17 and the like. The liquid nitrogen absorbs heat and is gasified and then enters the outside through the outlet one-way valve 3-13, the liquid nitrogen is compressed through the circulating compression pump 3-14, then the liquid nitrogen is cooled and liquefied through the cryocooler 3-15, and finally the liquid nitrogen returns to the liquid nitrogen chamber 3-9 in the injection nozzle through the inlet one-way pump 3-17, so that the circulating process is completed. Wherein, the circulating compression pump 3-14 provides power for the circulating process, and the outlet one-way valve 3-13 and the inlet one-way valve 3-17 ensure the circulating direction. The flow regulating valve 3-16 regulates the flow of liquid nitrogen according to the temperature of the melt at the nozzle and the like so as to control the cooling degree of the melt.
The invention relates to an ultra-high speed injection molding machine with a cooling nozzle, wherein a temperature compensation part of the ultra-high speed injection molding machine is shown in figure 2 and mainly comprises a temperature compensation cylinder body 3-18, a heating ring 3-19, a high-precision temperature sensor 3-20 and the like. The temperature compensation cylinder 3-18 is positioned between the heat insulation inner cylinder 3-4 and the injection molding spray pipe 3-8 coated with graphene, two ends of the temperature compensation cylinder are respectively in interference fit with the heat insulation inner cylinder 3-4 and the injection molding spray pipe 3-8 coated with graphene, and the temperature compensation cylinders 3-18 are arranged at a certain distance. The temperature compensation cylinder 3-18 is disc-shaped and is provided with a liquid nitrogen passing hole. The heating ring 3-19 is positioned in the temperature compensation cylinder 3-18 near one end of the injection molding spray pipe 3-8 plated with graphene, and temperature compensation is carried out on the melt. The high-precision temperature sensor 3-20 is positioned in the nozzle shell 3-2 near the nozzle head 3-1, and the measuring head of the high-precision temperature sensor 3-20 is directly contacted with the melt to measure the temperature of the melt at the nozzle head in real time.
When the injection molding machine is started, as the solidified melt which is solidified in the last work is remained in the injection molding spray pipe 3-8 plated with the graphene, the heating ring 3-19 of the temperature compensation part is started, solidified residual materials are melted and discharged from the nozzle head 3-1, and then the heating ring 3-19 stops working. When the injection molding machine works normally, the high-precision temperature sensor 3-20 monitors the temperature of the melt at the nozzle head 3-1 in real time, and when the temperature of the melt is found to be too low, the heating ring 3-19 is triggered to start, so that the temperature of the melt is compensated in real time; when the temperature of the melt is too high, triggering the flow regulating valve 3-16 to start, and regulating the flow of liquid nitrogen to control the cooling degree of the melt; when the melt temperature is in the normal range, the heating ring 3-19 is not operated and the flow regulating valve 3-16 is not regulated.
The above description is of the specific equipment and process of the present invention, and is described with reference to the drawings. The invention is not limited to the specific apparatus and processes described above, any modifications or substitutions to the related apparatus based on the above description, and any local adjustments to the related process based on the above description are within the spirit and scope of the invention.
Claims (1)
1. The utility model provides a take super high-speed injection molding machine of cooling nozzle, mainly comprises hydraulic pressure part, compound die part, injection nozzle, injection part and electrical portion, its characterized in that: the injection nozzle mainly comprises an internal cooling part, an external circulating part and a temperature compensating part, the tail end of the injection nozzle is in threaded connection with the end part of a machine barrel at the front end of an injection screw, the internal cooling part of the injection nozzle mainly comprises a nozzle head, a nozzle shell, a front sealing ring, a heat-insulating inner cylinder, a rear sealing ring, a heat-insulating outer cylinder, a sealing ring, an injection molding spray pipe plated with graphene, a liquid nitrogen chamber, a vacuum chamber and a vacuum valve, the injection molding spray pipe plated with graphene, the heat-insulating inner cylinder and the front sealing ring enclose a liquid nitrogen chamber, heat exchange is carried out between injection molding melt and liquid nitrogen through an injection molding spray pipe wall, and graphene is plated on the surface of the injection molding spray pipe, so that the heat conductivity of the injection molding spray pipe can be increased, and the heat transfer efficiency is improved; the heat-insulating inner cylinder body, the heat-insulating outer cylinder body and the sealing ring enclose a vacuum cavity, and a vacuum valve arranged on the outer cylinder body is used for performing air extraction operation to establish a vacuum environment, so that heat exchange between liquid nitrogen and the outside is avoided; the temperature compensation part mainly comprises a temperature compensation cylinder, a heating ring and a high-precision temperature sensor, wherein the temperature compensation cylinder is positioned between the heat insulation inner cylinder and the injection molding spray pipe coated with graphene, two ends of the temperature compensation cylinder are respectively in interference fit with the heat insulation inner cylinder and the injection molding spray pipe coated with graphene, and a plurality of temperature compensation cylinders are arranged at a certain distance; the temperature compensation cylinder body is disc-shaped and is provided with a liquid nitrogen passing hole; the heating ring is positioned in a temperature compensation cylinder close to one end of the injection molding spray pipe plated with graphene, and temperature compensation is carried out on the melt; the high-precision temperature sensor is positioned in the nozzle shell and close to the nozzle head, and the measuring head of the high-precision temperature sensor is directly contacted with the melt to measure the temperature of the melt at the nozzle head in real time; the injection nozzle external circulation part mainly comprises a liquid nitrogen circulation pipeline, an outlet one-way valve, a circulation compression pump, a low-temperature refrigerator, a flow regulating valve and an inlet one-way valve, liquid nitrogen is gasified by absorbing heat and then enters the outside through the nozzle through the outlet one-way valve, is compressed through the circulation compression pump, is cooled and liquefied through the low-temperature refrigerator, and finally returns to a liquid nitrogen chamber in the injection nozzle through the inlet one-way pump, so that the circulation process is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910020305.1A CN109624216B (en) | 2019-01-09 | 2019-01-09 | Ultra-high-speed injection molding machine with cooling nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910020305.1A CN109624216B (en) | 2019-01-09 | 2019-01-09 | Ultra-high-speed injection molding machine with cooling nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN109624216A CN109624216A (en) | 2019-04-16 |
| CN109624216B true CN109624216B (en) | 2023-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910020305.1A Active CN109624216B (en) | 2019-01-09 | 2019-01-09 | Ultra-high-speed injection molding machine with cooling nozzle |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114905701A (en) * | 2022-04-08 | 2022-08-16 | 齐素伟 | Temperature control nozzle of ultrahigh-speed injection molding machine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997002129A1 (en) * | 1995-06-30 | 1997-01-23 | Christian Stern | Plastic injection moulding nozzle |
| CN101985237A (en) * | 2010-07-15 | 2011-03-16 | 王维东 | Improved structure for sprayer of injection molding machine |
| CN102615794A (en) * | 2012-04-04 | 2012-08-01 | 荆州龙海塑胶机械有限公司 | Injection unit special for injection molding machine for marbled plastic product |
| CN204414513U (en) * | 2014-12-29 | 2015-06-24 | 宁波贝拓电气有限公司 | Injection machine |
| CN105690812A (en) * | 2016-03-16 | 2016-06-22 | 中国科学院理化技术研究所 | Online cryogenic modification device of high polymer material injection molding equipment |
| CN107553827A (en) * | 2017-09-27 | 2018-01-09 | 龙里县逸轩生产力促进中心 | A kind of injection-moulding nozzle for injection moulding machine |
| CN208215864U (en) * | 2018-03-27 | 2018-12-11 | 克琴新材料科技（上海）有限公司 | A kind of injection nozzle of the injection molding machine with refrigerating function |
| CN209649339U (en) * | 2019-01-09 | 2019-11-19 | 泰瑞机器股份有限公司 | A kind of ultrahigh speed injection molding machine with cooling nozzles |
-
2019
- 2019-01-09 CN CN201910020305.1A patent/CN109624216B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997002129A1 (en) * | 1995-06-30 | 1997-01-23 | Christian Stern | Plastic injection moulding nozzle |
| CN101985237A (en) * | 2010-07-15 | 2011-03-16 | 王维东 | Improved structure for sprayer of injection molding machine |
| CN102615794A (en) * | 2012-04-04 | 2012-08-01 | 荆州龙海塑胶机械有限公司 | Injection unit special for injection molding machine for marbled plastic product |
| CN204414513U (en) * | 2014-12-29 | 2015-06-24 | 宁波贝拓电气有限公司 | Injection machine |
| CN105690812A (en) * | 2016-03-16 | 2016-06-22 | 中国科学院理化技术研究所 | Online cryogenic modification device of high polymer material injection molding equipment |
| CN107553827A (en) * | 2017-09-27 | 2018-01-09 | 龙里县逸轩生产力促进中心 | A kind of injection-moulding nozzle for injection moulding machine |
| CN208215864U (en) * | 2018-03-27 | 2018-12-11 | 克琴新材料科技（上海）有限公司 | A kind of injection nozzle of the injection molding machine with refrigerating function |
| CN209649339U (en) * | 2019-01-09 | 2019-11-19 | 泰瑞机器股份有限公司 | A kind of ultrahigh speed injection molding machine with cooling nozzles |
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| CN109624216A (en) | 2019-04-16 |
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