CN113843984A - Annular gate mould - Google Patents
Annular gate mould Download PDFInfo
- Publication number
- CN113843984A CN113843984A CN202111002026.6A CN202111002026A CN113843984A CN 113843984 A CN113843984 A CN 113843984A CN 202111002026 A CN202111002026 A CN 202111002026A CN 113843984 A CN113843984 A CN 113843984A
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- China
- Prior art keywords
- cutter
- sprue
- gate
- cutter sleeve
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 238000003825 pressing Methods 0.000 claims abstract description 40
- 238000005520 cutting process Methods 0.000 claims abstract description 21
- 238000001746 injection moulding Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000013138 pruning Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 12
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000015111 chews Nutrition 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
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- 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
- B29C45/38—Cutting-off equipment for sprues or ingates
- B29C45/382—Cutting-off equipment for sprues or ingates disposed outside the mould
-
- 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
Abstract
The invention discloses an annular sprue die which comprises a front die core, a rear die core and a cutter assembly, wherein a sprue gate is formed on the front die core, a conical groove is formed in the position, opposite to the sprue gate, of the rear die core, the cutter assembly comprises a cutter sleeve and a pressing mechanism, the cutter sleeve is slidably sleeved on the outer side of a sprue, the sprue is connected with an injection molding machine and can penetrate into the sprue gate and extend into the position right above the conical groove, an annular cutting edge is formed at the bottom end of the cutter sleeve and is opposite to the outer edge of the conical groove, and the pressing mechanism is arranged at the top of the cutter sleeve and is used for pressing the cutter sleeve to enable the annular cutting edge to be abutted against the outer edge of the conical groove. This annular runner mould directly can accomplish through the mechanism operation of exerting pressure, has saved the step of artifical pruning after the drawing of patterns, has improved production efficiency, has practiced thrift the human cost simultaneously.
Description
Technical Field
The invention relates to the technical field of injection molding, in particular to an annular gate mold.
Background
Injection molding, also known as injection molding, is a method of molding by injection and molding. The injection molding method has the advantages of high production speed, high efficiency, automation of operation, various colors, various shapes from simple to complex, small sizes, accurate product size, easy replacement of products, capability of forming products with complex shapes, and suitability for the molding processing fields of mass production, products with complex shapes and the like.
Generally speaking, injection moulding must use the mould, and to the mould of ring gate, the material will be in the same place with the product after the product demolding, needs the manual work to prune, not only wastes time and energy, and manufacturing cost is high moreover.
In summary, how to solve the problem that the production cost is high due to the fact that the material needs to be trimmed manually after the product is ejected from the annular gate mold becomes a technical problem which needs to be solved by the technical staff in the field.
Disclosure of Invention
The invention aims to provide an annular gate mold, which aims to solve the problem that the annular gate mold needs to manually trim materials after a product is demoulded, so that the production cost is high.
In order to achieve the purpose, the invention provides an annular sprue die, which comprises a front die core, a rear die core and a cutter assembly, wherein a sprue gate is formed on the front die core, a conical groove is formed in the position, opposite to the sprue gate, of the rear die core, the cutter assembly comprises a cutter sleeve and a pressing mechanism, the cutter sleeve is slidably sleeved on the outer side of a sprue, the sprue is connected with an injection molding machine and can penetrate into the sprue gate and extend to the position right above the conical groove, an annular cutting edge is formed at the bottom end of the cutter sleeve and is opposite to the outer edge of the conical groove, and the pressing mechanism is arranged at the top of the cutter sleeve and used for pressing the cutter sleeve to enable the annular cutting edge to abut against the outer edge of the conical groove.
Preferably, the pressing mechanism includes a fixing plate fixedly connected to the top of the cutter sleeve and a pressing cover plate fixed to the top surface of the fixing plate, a vertically arranged spring installation through groove is formed in the fixing plate, a return spring is disposed in the spring installation through groove, one end of the return spring is fixedly connected to the pressing cover plate, the other end of the return spring abuts against the top surface of the front mold core, and the return spring has an elastic force that enables the bottom surface of the fixing plate and the top surface of the front mold core to maintain a preset movement gap.
Preferably, the thickness of a gate formed after the front mold core and the rear mold core are closed is 0.5mm, and the preset movement clearance is not less than 0.5 mm.
Preferably, the pressing mechanism further comprises a driving mechanism arranged at the top of the pressing cover plate, and the driving mechanism is used for driving the pressing cover plate to move downwards so that the annular blade abuts against the outer edge of the tapered groove.
Preferably, the driving mechanism is a linear telescopic rod mechanism.
Preferably, the number of the linear telescopic rod mechanisms is two, and the linear telescopic rod mechanisms are symmetrically distributed on two sides of the sprue.
Preferably, the linear telescopic rod mechanism is a telescopic oil cylinder, and oil pressure pipelines of the two telescopic oil cylinders are communicated and communicated with an oil pressure control system through a main pipeline.
Preferably, the top of the front mold core is provided with a guide post which is vertically arranged, and the fixing plate is provided with a guide hole matched with the guide post.
Preferably, the fixing plate and the pressing cover plate are fixedly connected through bolts.
Preferably, the annular blade is formed by an inner chamfer at the bottom end of the cutter sleeve, the cutter angle of the annular blade is 30 degrees, and the cutter width of the annular blade is 0.05 mm.
Compared with the introduction content of the background art, the annular sprue die comprises a front die core, a rear die core and a cutter assembly, wherein a sprue gate is formed on the front die core, a tapered groove is formed in the position, facing the sprue gate, of the rear die core, the cutter assembly comprises a cutter sleeve and a pressing mechanism, the cutter sleeve is slidably sleeved on the outer side of the sprue gate, the sprue gate is connected with an injection molding machine and can penetrate into the sprue gate and stretch into the position right above the tapered groove, an annular cutting edge is formed at the bottom end of the cutter sleeve, the annular cutting edge is facing to the outer edge of the tapered groove, and the pressing mechanism is arranged at the top of the cutter sleeve and is used for pressing the cutter sleeve to enable the annular cutting edge to abut against the outer edge of the tapered groove. This annular runner mould, in the in-service use process, the injection molding machine chews through the purt and injects the molding material into the die cavity completion of the front mould benevolence behind the compound die and the formation of back mould benevolence and moulds plastics, then exert pressure to the cutter sleeve through biasing mechanism so that the annular cutting edge of cutter sleeve's bottom offsets with the outside border of the bell mouth on the back mould benevolence, thereby with the material of product connection to the excision, direct through the operation of biasing mechanism can accomplish, the step of artifical pruning after having saved the drawing of patterns, the production efficiency is improved, and the human cost is saved simultaneously.
Drawings
FIG. 1 is a schematic view of an exploded structure of a ring gate mold provided by the present invention;
FIG. 2 is a schematic top view of a ring-gated mold of the present invention;
FIG. 3 is a schematic sectional view A-A of FIG. 2;
FIG. 4 is an enlarged view of part B of FIG. 3;
FIG. 5 is an enlarged view of a portion C of FIG. 3;
FIG. 6 is a schematic top view of a cutter sleeve according to the present invention;
FIG. 7 is a schematic cross-sectional view of D-D of FIG. 6;
FIG. 8 is a schematic view of the partial structure of the E part of FIG. 7;
fig. 9 is a schematic structural diagram of the separation of the material handle and the product provided by the invention.
In the figure:
the cutting device comprises a front die core 1, a guide post 11, a rear die core 2, a tapered groove 21, a cutter assembly 3, a cutter sleeve 31, an annular blade 310, a pressing mechanism 32, a fixing plate 32a, a spring installation through groove 32a1, a guide hole 32a2, a guide sleeve 32a3, a pressing cover plate 32b, a return spring 32c, a driving mechanism 32d, a bolt 32e, a sprue 4, an oil pressure pipeline 5, an oil pressure control system 6, a product 7 and a material handle 8.
Detailed Description
The core of the invention is to provide the annular gate mold, so as to solve the problem that the annular gate mold needs to manually trim materials after a product is demoulded, so that the production cost is high.
In order to make those skilled in the art better understand the technical solutions provided by the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-9, an embodiment of the present invention provides an annular gate mold, which includes a front mold core 1, a rear mold core 2 and a cutter assembly 3, wherein a sprue gate is formed on the front mold core 1, a tapered groove 21 is formed at a position of the rear mold core 2 facing the sprue gate, the cutter assembly 3 includes a cutter sleeve 31 and a pressing mechanism 32, the cutter sleeve 31 is slidably sleeved outside the sprue 4, the sprue 4 is used for being connected with an injection molding machine and being capable of penetrating into the sprue gate and extending into a position right above the tapered groove 21, an annular blade 310 is formed at a bottom end of the cutter sleeve 31, the annular blade 310 faces an outer edge of the tapered groove 21, and the pressing mechanism 32 is disposed at a top of the cutter sleeve 31 and is used for pressing the cutter sleeve 31 so that the annular blade 310 abuts against the outer edge of the tapered groove 21.
This annular runner mould, in the in-service use process, the injection molding machine chews 4 through the purt and pours into the moulding plastics into the die cavity completion of the front mould benevolence 1 behind the compound die and the 2 formation of back mould benevolence, then exert pressure to cutter sleeve 31 through biasing mechanism 32 so that the annular cutting edge 310 of cutter sleeve 31's bottom offsets with the outside border of the bell mouth 21 on the back mould benevolence 2, thereby excise 8 with the material that product 7 is connected, directly can accomplish through biasing mechanism 32 operation, the step of artifical pruning after having saved the drawing of patterns, the production efficiency is improved, and the human cost is saved simultaneously.
In some specific embodiments, the pressing mechanism 32 may specifically include a fixing plate 32a fixedly connected to the top of the cutter sleeve 31 and a pressing cover plate 32b fixed to the top surface of the fixing plate 32a, a vertically arranged spring installation through groove 32a1 is formed on the fixing plate 32a, a return spring 32c is disposed in the spring installation through groove 32a1 a, one end of the return spring 32c is fixedly connected to the pressing cover plate 32b, the other end of the return spring 32c abuts against the top surface of the front mold core 1, and the return spring 32c has an elastic force that maintains a preset movement gap between the bottom surface of the fixing plate 32a and the top surface of the front mold core 1. By designing the pressing mechanism 32 in the above-described configuration, the pressing mechanism 32 can be automatically reset by the return spring 32c to facilitate repetition of the operation. Meanwhile, the assembly and disassembly of the return spring 32c are facilitated by adopting a combination form of the pressing cover plate 32b and the fixing plate 32a, wherein the fixing manner of the fixing plate 32a and the pressing cover plate 32b can adopt a manner of fixedly connecting the bolts 32e, and can also adopt other fixing manners commonly used by those skilled in the art, which is not limited in more detail herein.
In a further embodiment, the thickness of the gate formed after the front mold core 1 and the rear mold core 2 are closed is preferably 0.5mm, and certainly, in order to ensure that the pressing mechanism 32 can smoothly complete the pressing and drive the cutter sleeve to complete the cutting action, the preset movement gap h should be not less than 0.5 mm. Through a large amount of experimental tests, the gate thickness is designed to be 0.5mm, so that the residual material is minimum after cutting off on the premise that the product is not short of the material, and the table 1 can be specifically seen:
TABLE 1
In some more specific embodiments, the pressing mechanism 32 may further include a driving mechanism 32d disposed on the top of the pressing cover plate 32b, and the driving mechanism 32d is used for driving the pressing cover plate 32b to move downward so that the annular blade 310 abuts against the outer edge of the tapered slot 21. Through the design of the driving mechanism, the equipment can complete the action of cutting off the material handle, manual operation is not needed, the automation degree of the annular pouring gate mould is greatly improved, and the labor cost is saved.
It should be noted that the driving mechanism 32d may specifically be a linear telescopic rod mechanism, such as an electric control telescopic rod, an air cylinder telescopic rod or an oil cylinder telescopic rod, and may be selected according to actual requirements in the actual application process.
In a further embodiment, the number of the linear telescopic rod mechanisms is preferably two, and the linear telescopic rod mechanisms are symmetrically distributed on two sides of the sprue 4. Through designing into two straight line telescopic link mechanisms to the both sides of 4 are chewed in the purt to symmetric distribution, make actuating mechanism more steady to the downward driving force of apron of exerting pressure.
It should be noted that, when the linear telescopic rod mechanism adopts the telescopic oil cylinders, that is, two telescopic oil cylinders are adopted to drive the pressing cover plate, the oil pressure pipelines 5 of the two telescopic oil cylinders are generally designed to be communicated with each other and are communicated with the oil pressure control system 6 through a main pipeline. The driving forces of the two telescopic cylinders can be made to be identical and the actions can be performed synchronously by designing the oil pressure pipelines to be communicated with each other and communicating with the oil pressure control system 6 through a main pipeline.
In some more specific embodiments, the top of the front mold core 1 may further be provided with a vertically arranged guide post 11, and the fixing plate 32a is provided with a guide hole 32a2 adapted to the guide post 11. Through the guide structure of design guide post and guiding hole for the apron that exerts pressure drives the fixed plate downstream more smoothly, has avoided the condition of blocking to take place. It will of course be appreciated that, in general, guide holes 32a2 may also be provided with guide sleeves 32a3, with guide posts slidably engaging guide sleeves 32a 3.
In some more specific embodiments, the above-mentioned specific structure form of the annular blade 310 may be formed by inner chamfering the bottom end of the cutter sleeve 31, and further, through a large number of experimental tests, the cutter angle a of the annular blade 310 is preferably 30 °, and the cutter width w of the annular blade 310 is preferably 0.05 mm. The parameter design of this annular cutting edge can guarantee that the life of annular cutting edge is more than 10 ten thousand times, can make the defective material guarantee as far as simultaneously at less size, can specifically see table 2:
TABLE 2
The ring-gate mold provided by the present invention is described in detail above. It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It is also noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides an annular runner mould, its characterized in that, includes front mould benevolence (1), back mould benevolence (2) and cutter subassembly (3), be formed with the sprue gate on front mould benevolence (1), back mould benevolence (2) are just right the position of sprue gate is formed with tapered slot (21), cutter subassembly (3) are including cutter sleeve (31) and biasing means (32), the outside that the sprue was chewed (4) is located to cutter sleeve (31) slip cap, the sprue is chewed (4) and is used for being connected with the injection molding machine and can penetrate the sprue gate and stretch into directly over tapered slot (21), the bottom of cutter sleeve (31) is formed with annular cutting edge (310), annular cutting edge (310) with the outer border of tapered slot (21) is just right mutually, biasing means (32) set up in the top of cutter sleeve (31) and be used for to cutter sleeve (31) pressurize so that annular cutting edge (310) with the outer border of tapered slot (21) is just right And (6) offsetting.
2. The ring gate mold according to claim 1, wherein the pressing mechanism (32) comprises a fixing plate (32a) fixedly connected to the top of the cutter sleeve (31) and a pressing cover plate (32b) fixed to the top surface of the fixing plate (32a), a vertically arranged spring mounting through groove (32a1) is formed on the fixing plate (32a), a return spring (32c) is disposed in the spring mounting through groove (32a1), one end of the return spring (32c) is fixedly connected to the pressing cover plate (32b), the other end of the return spring (32c) abuts against the top surface of the front mold core (1), and the return spring (32c) has an elastic force that maintains a preset movement gap between the bottom surface of the fixing plate (32a) and the top surface of the front mold core (1).
3. The ring gate mold according to claim 2, wherein the gate thickness formed after the front core (1) and the rear core (2) are closed is 0.5mm, and the predetermined movement gap is not less than 0.5 mm.
4. The ring-gated mold according to claim 2, wherein the pressing mechanism (32) further comprises a driving mechanism (32d) provided on a top portion of the pressing cover plate (32b), the driving mechanism (32d) being configured to drive the pressing cover plate (32b) to move downward to bring the annular blade (310) into abutment with an outer edge of the tapered groove (21).
5. The ring-gated mold of claim 4 wherein the drive mechanism (32d) is a linear telescoping rod mechanism.
6. Ring-gated mould according to claim 5, wherein the number of linear telescopic rod means is two and symmetrically arranged on both sides of the sprue (4).
7. Ring gate mold according to claim 6, characterized in that the linear telescopic rod mechanism is a telescopic cylinder, and the oil pressure lines (5) of the two telescopic cylinders are connected and connected with the oil pressure control system (6) through a main line.
8. The ring-gate mold according to claim 2, wherein the top of the front mold core (1) is provided with a vertically arranged guide post (11), and the fixing plate (32a) is provided with a guide hole (32a2) adapted to the guide post (11).
9. The ring-gated mold according to claim 2, wherein the fixing plate (32a) and the pressure-applying cover plate (32b) are fixedly connected by bolts (32 e).
10. The ring gate mold according to any of claims 1-9, wherein the annular cutting edge (310) is formed by an inner chamfer of the bottom end of the cutter sleeve (31), and the cutter angle of the annular cutting edge (310) is 30 °, and the cutter width of the annular cutting edge (310) is 0.05 mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111002026.6A CN113843984A (en) | 2021-08-30 | 2021-08-30 | Annular gate mould |
| PCT/CN2022/091737 WO2023029556A1 (en) | 2021-08-30 | 2022-05-09 | Ring gate mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111002026.6A CN113843984A (en) | 2021-08-30 | 2021-08-30 | Annular gate mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113843984A true CN113843984A (en) | 2021-12-28 |
Family
ID=78976416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111002026.6A Pending CN113843984A (en) | 2021-08-30 | 2021-08-30 | Annular gate mould |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113843984A (en) |
| WO (1) | WO2023029556A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115008692A (en) * | 2022-01-14 | 2022-09-06 | 台州学院 | Method for accurately forming hot runner of PEEK high-end bearing plastic retainer |
| WO2023029556A1 (en) * | 2021-08-30 | 2023-03-09 | 青岛海尔空调器有限总公司 | Ring gate mold |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08187752A (en) * | 1995-01-11 | 1996-07-23 | Meiki Co Ltd | Injection molding method and machine |
| CN212707837U (en) * | 2020-07-20 | 2021-03-16 | 合肥市久环模具设备制造有限公司 | Automatic sprue cutting device for injection molding of motor rotor |
| CN213675267U (en) * | 2020-11-12 | 2021-07-13 | 郴州市海扬模具有限公司 | Internal cutting mechanism of closed gate die |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2683949B2 (en) * | 1990-07-20 | 1997-12-03 | 株式会社名機製作所 | Sprueless disk mold |
| CN203063054U (en) * | 2013-01-10 | 2013-07-17 | 广州市镭迪机电制造技术有限公司 | Disk-shaped sprue die with automatic cut-off mechanism |
| CN113843984A (en) * | 2021-08-30 | 2021-12-28 | 青岛海尔空调器有限总公司 | Annular gate mould |
-
2021
- 2021-08-30 CN CN202111002026.6A patent/CN113843984A/en active Pending
-
2022
- 2022-05-09 WO PCT/CN2022/091737 patent/WO2023029556A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08187752A (en) * | 1995-01-11 | 1996-07-23 | Meiki Co Ltd | Injection molding method and machine |
| CN212707837U (en) * | 2020-07-20 | 2021-03-16 | 合肥市久环模具设备制造有限公司 | Automatic sprue cutting device for injection molding of motor rotor |
| CN213675267U (en) * | 2020-11-12 | 2021-07-13 | 郴州市海扬模具有限公司 | Internal cutting mechanism of closed gate die |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029556A1 (en) * | 2021-08-30 | 2023-03-09 | 青岛海尔空调器有限总公司 | Ring gate mold |
| CN115008692A (en) * | 2022-01-14 | 2022-09-06 | 台州学院 | Method for accurately forming hot runner of PEEK high-end bearing plastic retainer |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023029556A1 (en) | 2023-03-09 |
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