CN112848068A - Defoaming device of injection mold for processing automobile plastic spare and accessory parts - Google Patents
Defoaming device of injection mold for processing automobile plastic spare and accessory parts Download PDFInfo
- Publication number
- CN112848068A CN112848068A CN202011511345.5A CN202011511345A CN112848068A CN 112848068 A CN112848068 A CN 112848068A CN 202011511345 A CN202011511345 A CN 202011511345A CN 112848068 A CN112848068 A CN 112848068A
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- Prior art keywords
- connecting rod
- gear
- plate
- fixedly connected
- mold
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- 238000002347 injection Methods 0.000 title claims abstract description 28
- 239000007924 injection Substances 0.000 title claims abstract description 28
- 230000000694 effects Effects 0.000 claims abstract description 4
- 230000000670 limiting effect Effects 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 abstract description 16
- 230000007547 defect Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- 239000007788 liquid Substances 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 4
- 239000006260 foam Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
-
- 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
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- 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
- B29C2045/1784—Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/7604—Temperature
Abstract
The invention relates to the technical field of automobile part processing, in particular to a defoaming device of an injection mold for processing automobile plastic parts, wherein the outer surface of a mold bracket is movably connected with a first gear, a connecting rod bracket is fixedly connected on the inner wall of the mold bracket and positioned on one side of the first gear, the outer surface of the first gear is movably connected with a first connecting rod, one end of the first connecting rod and positioned in the connecting rod bracket is movably connected with a second connecting rod, one end of the second connecting rod is engaged with a second gear, the outer surface of the second gear is fixedly connected with a volute spring, one end of the volute spring is fixedly connected with a mold shell, the second gear drives the volute spring and the mold shell to vibrate together, so that bubbles overflow, the effect of removing bubbles in the injection mold is achieved, injection molding and vibration are carried out simultaneously, and the injection molding process is not interfered, bubble defects in the injection molding piece are removed, and the quality of the injection molding piece is guaranteed.
Description
Technical Field
The invention relates to the technical field of automobile part processing, in particular to a defoaming device of an injection mold for processing automobile plastic parts.
Background
The injection mold used for plastic parts in automobile parts is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and accurate sizes, and the injection molding is a processing method used for batch production of parts with complex shapes, in particular to a method for injecting heated and melted plastic into a mold cavity from an injection molding machine at high pressure and obtaining a formed product after cooling and solidification.
In the existing injection mold, in the injection process, liquid plastic is injected into a gate of the mold by an injection machine, the cavity is filled with the liquid plastic and is cooled and molded by a cooling device, but when the existing injection mold is used for injection, air in the cavity is compressed, the air is discharged from an exhaust groove, but part of the air enters the liquid plastic, and after an injection molded part is molded, a bubble defect is formed, so that the reject ratio of the injection molded part is high, and secondly, the mold does not have a mechanism capable of monitoring the temperature in real time in the cooling and molding process, so that the cooling condition of a plastic product is not convenient to observe all the time.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a defoaming device for an injection mold for processing automobile plastic parts, which is achieved by the following specific technical means:
a bubble removing device of an injection mold for processing automobile plastic parts comprises a mold support, wherein a first gear is movably connected to the outer surface of the mold support, a connecting rod support is fixedly connected to the inner wall of the mold support and positioned on one side of the first gear, a first connecting rod is movably connected to the outer surface of the first gear, a second connecting rod is movably connected to one end of the first connecting rod and positioned inside the connecting rod support, a second gear is meshed with one end of the second connecting rod, a volute spring is fixedly connected to the outer surface of the second gear, a mold shell is fixedly connected to one end of the volute spring, a heat conducting wire is fixedly connected to the outer surface of the mold shell, a heat collecting box is fixedly connected to one end of the heat conducting wire, a heat conducting plate is fixedly connected to the inner wall of the heat collecting box and positioned on one end of the heat conducting wire, and an adjusting plate is slidably connected to the inner, the outer fixed surface of regulating plate is connected with the push rod, the inside of thermal-arrest case and the rear surface fixedly connected with fixed plate that is located the push rod, the surface of push rod passes through bolt fixedly connected with slide, the outer fixed surface of push rod is connected with the pull rod, the one end fixedly connected with of pull rod prompts the board, the surface activity of prompting the board has cup jointed the spring.
Preferably, a rotating shaft of the first gear is movably connected with a driving motor, and the diameter of the first gear is larger than that of the second gear.
Preferably, one end of the second connecting rod extends to the outer side of the connecting rod support, and a spring is movably sleeved on the outer surface of the second connecting rod and located inside the connecting rod support.
Preferably, a limiting groove is formed in the fixing plate, and a bolt is movably connected between the sliding plate and the limiting groove.
As optimization, the heat conducting plate and the adjusting plate are of a closed structure and filled with alcohol, and the heat conducting wires and the heat conducting plate are made of copper materials.
Preferably, the outer wall of the heat collection box and one side of the prompt plate are provided with through holes, and the outer surface of the prompt plate is provided with scales.
The invention has the following beneficial effects:
1. the foam removing device of the injection mold for processing the plastic parts of the automobile drives the first gear to rotate through the driving motor respectively, the first gear drives the first connecting rod movably connected with the outer surface of the first gear to pull the second connecting rod up and down in the rotating process, so that the second connecting rod moves up and down under the limiting action of the connecting rod bracket and the spring, the other end of the second connecting rod is meshed with the second gear, the second gear is connected with the mold shell through the volute spring, therefore, the first gear rotates to drive the second gear to rotate in the forward and reverse directions circularly through the first connecting rod and the second connecting rod, the second gear drives the volute spring to vibrate with the mold shell together, the bubbles in a liquid plastic part in a cavity are vibrated, the bubbles overflow is enabled to achieve the effect of removing the bubbles in the injection mold, the injection molding and the vibration are carried out simultaneously, and the injection molding process is not interfered, bubble defects in the injection molding part are removed, and the quality of the injection molding part is guaranteed, so that the yield of the injection mold is improved, and the vibration mechanism is simple in structure and easy to realize.
2. When the defoaming device of the injection mold for processing the plastic parts of the automobile is injected into the mold shell through the plastic in a molten state, the temperature is transmitted to the inside of the heat collecting box along the heat conducting wire, and the temperature is firstly transmitted between the heat conducting plate and the adjusting plate, so that the alcohol filled between the heat conducting plate and the adjusting plate expands to make the adjusting plate drive the push rod to move to one side, the pull rod is fixedly connected with the push rod and the outer surface of the prompt plate, so that the prompt plate is driven to move outwards along the through hole on the outer wall of the heat collecting box in the process that the push rod moves towards one side, according to the gradual decrease of the temperature during the cooling process of the mold shell, the indicator plate gradually moves to the restoration position in consideration of the inside of the heat collecting tank, the temperature cooling range of the mold shell is improved by observing the exposed area of the prompt plate outside the heat collection box, so that the cooling temperature of the mold shell is conveniently monitored in real time, and the subsequent work after the plastic product is cooled and molded is conveniently prepared.
Drawings
FIG. 1 is a schematic view of the structure of the mold frame of the present invention.
Fig. 2 is a schematic view of the mold housing mounting structure of the present invention.
FIG. 3 is a schematic view of the internal structure of the heat collecting tank according to the present invention.
Fig. 4 is a schematic view of the structure of the skateboard of the present invention.
Fig. 5 is an enlarged view of a portion a of fig. 1.
In the figure: 1. a mold holder; 2. a first gear; 3. a connecting rod bracket; 4. a first link; 5. a second link; 6. a second gear; 7. a volute spiral spring; 8. a mold housing; 9. heat conducting wires; 10. a heat collection tank; 11. a heat conducting plate; 12. an adjusting plate; 13. a push rod; 14. a fixing plate; 15. a limiting groove; 16. a slide plate; 17. a pull rod; 18. a prompt board; 19. a spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a foam removing device of an injection mold for processing plastic parts of an automobile comprises a mold support 1, a first gear 2 is movably connected to the outer surface of the mold support 1, a driving motor is movably connected to the rotating shaft of the first gear 2, the diameter of the first gear 2 is larger than that of a second gear 6, a connecting rod support 3 is fixedly connected to the inner wall of the mold support 1 and located at one side of the first gear 2, a first connecting rod 4 is movably connected to the outer surface of the first gear 2, a second connecting rod 5 is movably connected to one end of the first connecting rod 4 and located inside the connecting rod support 3, one end of the second connecting rod 5 extends to the outer side of the connecting rod support 3, a spring is movably sleeved on the outer surface of the second connecting rod 5 and located inside the connecting rod support 3, the second gear 6 is engaged with one end of the second connecting rod 5, a volute spring 7 is fixedly connected to the outer surface of the second, one end of a volute spring 7 is fixedly connected with a mould shell 8, the first gear 2 is driven to rotate through a driving motor respectively, the first gear 2 drives a first connecting rod 4 movably connected with the outer surface of the first gear to pull a second connecting rod 5 up and down in the rotating process, so that the second connecting rod 5 moves up and down under the limiting action of a connecting rod bracket 3 and a spring, the other end of the second connecting rod 5 is meshed with a second gear 6, the second gear 6 is connected with the mould shell 8 through the volute spring 7, therefore, the first gear 2 rotates to drive the second gear 6 to rotate in a circulating forward and backward mode through the first connecting rod 4 and the second connecting rod 5, the second gear 6 drives the volute spring 7 and the mould shell 8 to vibrate bubbles in a liquid plastic part in a cavity together, so that the bubbles overflow is realized, the function of removing bubbles in an injection mould is realized, and the injection and vibration are carried out simultaneously, the injection molding process cannot be interfered, the bubble defects in the injection molding part are removed, and the quality of the injection molding part is ensured, so that the yield of the injection molding mold is improved, and the vibration mechanism is simple in structure and easy to realize.
Wherein, the outer surface of the mold housing 8 is fixedly connected with a heat conducting wire 9, one end of the heat conducting wire 9 is fixedly connected with a heat collecting box 10, the inner wall of the heat collecting box 10 and the end positioned at the heat conducting wire 9 are fixedly connected with a heat conducting plate 11, the inner wall of the heat collecting box 10 and the side positioned at the heat conducting plate 11 are slidably connected with an adjusting plate 12, the heat conducting plate 11 and the adjusting plate 12 are of a closed structure and are filled with alcohol, the heat conducting wire 9 and the heat conducting plate 11 are both made of copper materials, the outer surface of the adjusting plate 12 is fixedly connected with a push rod 13, the inner part of the heat collecting box 10 and the rear surface positioned at the push rod 13 are fixedly connected with a fixed plate 14, the outer surface of the push rod 13 is fixedly connected with a sliding plate 16 through bolts, the inner part of the fixed plate 14 is provided with, the outer surface of the indicator plate 18 is movably sleeved with a spring 19, a through hole is formed in the outer wall of the heat collecting tank 10 and located at one side of the indicator plate 18, the outer surface of the indicator plate 18 is graduated, when plastic in a molten state is injected into the mold housing 8, the temperature is transmitted to the inside of the heat collecting tank 10 along the heat conducting wire 9, and the temperature is firstly transmitted between the heat conducting plate 11 and the adjusting plate 12, so that the alcohol filled between the heat conducting plate 11 and the adjusting plate 12 expands, the adjusting plate 12 drives the push rod 13 to move towards one side, and the pull rod 17 is fixedly connected to the outer surfaces of the push rod 13 and the indicator plate 18, therefore, the push rod 13 drives the indicator plate 18 to move outwards along the through hole in the outer wall of the heat collecting tank 10 in the process of moving towards one side, the temperature of the indicator plate 18 gradually wants to move to the original position according to the gradual decrease of the temperature in the cooling process of the mold housing 8, and the temperature cooling range of the mold housing 8 is indicated by, the cooling temperature of the mold shell 8 can be monitored in real time, and the subsequent work after the plastic product is cooled and molded can be prepared conveniently.
The working principle is as follows: when the injection molding machine is used, when plastic in a molten state is injected into a gate of a mold shell 8 by the injection molding machine, a driving motor is started to drive the first gear 2 to rotate respectively, the first gear 2 drives a first connecting rod 4 movably connected with the outer surface of the first gear to pull a second connecting rod 5 up and down in the rotating process, so that the second connecting rod 5 moves up and down under the limiting action of a connecting rod bracket 3 and a spring, the other end of the second connecting rod 5 is meshed with the second gear 6, the second gear 6 is connected with the mold shell 8 through a volute spring 7, the first gear 2 rotates to drive the second gear 6 to rotate in a circulating forward and reverse direction through the first connecting rod 4 and the second connecting rod 5, the second gear 6 drives the volute spring 7 and the mold shell 8 to vibrate bubbles in a liquid plastic part in a cavity together, and the bubbles overflow, the vibration mechanism has simple structure and is easy to realize, because the outer surface of the mold shell 8 is connected with the heat collection box 10 through the heat conduction wire 9, when the molten plastic is injected into the mold shell 8, the temperature is transmitted to the inside of the heat collection box 10 along the heat conduction wire 9, and the temperature is firstly transmitted between the heat conduction plate 11 and the adjusting plate 12, so that the alcohol filled between the heat conduction plate 11 and the adjusting plate 12 expands, the adjusting plate 12 drives the push rod 13 to push towards one side, and the pull rod 17 is fixedly connected with the outer surfaces of the push rod 13 and the indicator plate 18, therefore, the push rod 13 drives the indicator plate 18 to move outwards along the through hole of the outer wall of the heat collection box 10 in the process of moving towards one side, according to the gradual temperature reduction in the cooling process of the mold shell 8, the prompt plate 18 gradually wants to move the inside of the heat collection box 10 to the recovery position, the temperature cooling range of the mold shell 8 is prompted by observing the exposed area of the prompt plate 18 outside the heat collection box 10, the cooling temperature of the mold shell 8 is conveniently monitored in real time, and the subsequent work after the plastic product is cooled and molded is conveniently prepared.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an auto plastic spare and accessory part processing is with injection mold's bubble removal device, includes mold support (1), its characterized in that: the die comprises a die support (1), a first gear (2) is movably connected to the outer surface of the die support (1), a connecting rod support (3) is fixedly connected to the inner wall of the die support (1) and located on one side of the first gear (2), a first connecting rod (4) is movably connected to the outer surface of the first gear (2), a second connecting rod (5) is movably connected to one end of the first connecting rod (4) and located inside the connecting rod support (3), a second gear (6) is meshed to one end of the second connecting rod (5), a volute spring (7) is fixedly connected to the outer surface of the second gear (6), a die shell (8) is fixedly connected to one end of the volute spring (7), a heat conducting wire (9) is fixedly connected to the outer surface of the die shell (8), a heat collecting box (10) is fixedly connected to one end of the heat conducting wire (9), and a heat conducting plate (11) is fixedly connected to the inner wall of the heat collecting box (10, the inner wall of thermal-arrest case (10) and the one side sliding connection who is located heat-conducting plate (11) have regulating plate (12), the outer fixed surface of regulating plate (12) is connected with push rod (13), the inside of thermal-arrest case (10) and the rear surface fixed connection who is located push rod (13) are connected with fixed plate (14), bolt fixedly connected with slide (16) are passed through to the surface of push rod (13), the outer fixed surface of push rod (13) is connected with pull rod (17), the one end fixedly connected with of pull rod (17) reminds board (18), spring (19) have been cup jointed in the surface activity of suggestion board (18).
2. The defoaming device for the injection mold for processing the plastic spare and accessory parts of the automobile as claimed in claim 1, wherein: a driving motor is movably connected to a rotating shaft of the first gear (2), and the diameter of the first gear (2) is larger than that of the second gear (6).
3. The defoaming device for the injection mold for processing the plastic spare and accessory parts of the automobile as claimed in claim 1, wherein: one end of the second connecting rod (5) extends to the outer side of the connecting rod support (3), and a spring is movably sleeved on the outer surface of the second connecting rod (5) and located inside the connecting rod support (3).
4. The defoaming device for the injection mold for processing the plastic spare and accessory parts of the automobile as claimed in claim 1, wherein: a limiting groove (15) is formed in the fixing plate (14), and a bolt is movably connected between the sliding plate (16) and the limiting groove (15).
5. The defoaming device for the injection mold for processing the plastic spare and accessory parts of the automobile as claimed in claim 1, wherein: the heat conducting plate (11) and the adjusting plate (12) are of a closed structure and are filled with alcohol, and the heat conducting wires (9) and the heat conducting plate (11) are made of copper materials.
6. The defoaming device for the injection mold for processing the plastic spare and accessory parts of the automobile as claimed in claim 1, wherein: the outer wall of the heat collection box (10) and one side of the prompt plate (18) are provided with through holes, and the outer surface of the prompt plate (18) is provided with scales.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011511345.5A CN112848068A (en) | 2020-12-19 | 2020-12-19 | Defoaming device of injection mold for processing automobile plastic spare and accessory parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011511345.5A CN112848068A (en) | 2020-12-19 | 2020-12-19 | Defoaming device of injection mold for processing automobile plastic spare and accessory parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112848068A true CN112848068A (en) | 2021-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011511345.5A Pending CN112848068A (en) | 2020-12-19 | 2020-12-19 | Defoaming device of injection mold for processing automobile plastic spare and accessory parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112848068A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114670397A (en) * | 2022-04-21 | 2022-06-28 | 郭海燕 | High-precision numerical control injection molding machine with bubble removing function |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209812998U (en) * | 2019-01-04 | 2019-12-20 | 深圳市超众机械设备有限公司 | Built-in micro-vibration dynamic mechanical die |
-
2020
- 2020-12-19 CN CN202011511345.5A patent/CN112848068A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209812998U (en) * | 2019-01-04 | 2019-12-20 | 深圳市超众机械设备有限公司 | Built-in micro-vibration dynamic mechanical die |
Non-Patent Citations (1)
| Title |
|---|
| 祁树胜, 北京航空航天大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114670397A (en) * | 2022-04-21 | 2022-06-28 | 郭海燕 | High-precision numerical control injection molding machine with bubble removing function |
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Application publication date: 20210528 |