CN116330566A - Forming equipment and forming method for molecular orientation connecting piece - Google Patents
Forming equipment and forming method for molecular orientation connecting piece Download PDFInfo
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- CN116330566A CN116330566A CN202211628069.XA CN202211628069A CN116330566A CN 116330566 A CN116330566 A CN 116330566A CN 202211628069 A CN202211628069 A CN 202211628069A CN 116330566 A CN116330566 A CN 116330566A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims description 36
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 10
- 239000004800 polyvinyl chloride Substances 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/52—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/24—Pipe joints or couplings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention discloses a molecular orientation connecting piece forming device, which comprises: hollow dabber, last forming die and lower forming die. The hollow mandrel is provided with two hollow mandrels, and the hollow mandrels are respectively arranged on two sides of the lower forming die. The hollow mandrel is provided with an inflatable sleeve and a porous metal core. Two ends of the upper forming die are provided with pipe positioning upper ring grooves, and the middle is provided with a socket forming upper cavity. The middle of the lower forming die is provided with a bellmouth forming lower cavity, both ends of the lower forming die are provided with pipe positioning lower ring grooves, and the lower forming die is provided with exhaust holes. The connecting piece is molded by pressurizing the hollow core in the axial die. The invention also discloses a method for forming the molecular orientation connecting piece, which comprises the following steps: s1, placing a connecting piece blank into a die through a hollow mandrel; s2, die assembly is carried out; s3, sealing two ends of the blank by using the inflatable sleeve; s4, injecting pressure air into the blank by the porous metal core to form the connecting piece, opening the mould after the connecting piece is cooled and shaped, and taking out the connecting piece.
Description
Technical Field
The invention belongs to the technical field of connector forming, and particularly relates to molecular orientation connector forming equipment and a molecular orientation connector forming method.
Background
The molecular orientation polyvinyl chloride pipe has the advantages of energy conservation, low carbon, excellent performance, large water delivery capacity and the like due to the special biaxial orientation process, has huge future application potential, is particularly suitable for the field of pressure water delivery, and is hopeful to replace traditional water supply and drainage pipelines such as cast iron pipelines, PE pipelines and the like.
At present, the direct connection of the molecular orientation polyvinyl chloride pipe in the industry is basically realized through a self-contained R-shaped socket, the R-shaped socket adopts a secondary heating and re-expanding forming mode, an axial retraction phenomenon can occur in the process, the quality defect occurs, the qualification rate is affected, the connection failure risk exists in the application process, and the application and popularization of the molecular orientation polyvinyl chloride pipe are hindered. To avoid the above-mentioned adverse effects, the related art has explored a connector for a molecular oriented polyvinyl chloride pipe.
The Chinese patent publication No. CN108527826A discloses a process method for manufacturing an oriented polyvinyl chloride double-socket pipe fitting, which comprises the steps of placing a PVC-U pipe in a forming tool, preheating the pipe by introducing hot water, pressurizing the inside to promote expansion orientation of the PVC-U pipe, and then connecting cooling water for shaping to obtain the PVC-O connecting piece. The method belongs to a wet forming technology, and can manufacture the PVC-O connecting piece, but because water is used for preheating, forming and cooling in the whole process, the production efficiency is extremely low due to low water temperature, irreversible abrasion and corrosion are caused to a cavity, equipment parts and the like in the tool by the existence of water, and the damage degree of equipment is high.
In order to solve the above problems, a molding device and a molding method for a molecular orientation connector are proposed.
Disclosure of Invention
In order to solve the problems, the invention provides a molecular orientation connector forming device and a molecular orientation connector forming method, which aim at the problem of forming a molecular orientation connector.
The utility model provides a molecular orientation connecting piece former, includes cavity dabber, goes up forming die and lower forming die, go up forming die and set up directly over forming die down, forming die both ends all are provided with the cavity dabber down, cavity dabber upper strata is provided with the inflatable sleeve, and porous metal core is connected to cavity dabber one end, and the high-pressure air supply is connected to the other end.
In this embodiment, the hollow mandrel is a hollow cylindrical structure, and an air flow channel is disposed inside the hollow mandrel.
In this embodiment, the porous metal core is a hollow cylindrical structure, a plurality of air outlet holes are uniformly arranged on the porous metal core, and the porous metal core is communicated with the hollow mandrel.
In this embodiment, both ends of the upper molding die are provided with pipe positioning upper ring grooves, and a socket molding upper cavity is arranged in the middle of the upper molding die.
In this embodiment, both ends of the lower molding die are provided with lower ring grooves for positioning pipes, and a lower cavity for molding a socket is arranged in the middle of the lower molding die.
In this embodiment, the lower molding die is provided with an exhaust hole.
A molding method of a molecular orientation connecting piece comprises the molding equipment and comprises the following steps:
s1, placing a biaxially oriented molecular pipe between horizontal concentric positions of two hollow mandrels by using a clamping device, horizontally moving the hollow mandrels at two ends to a designated position in the center of a die, inserting the two hollow mandrels into an inner cavity of the biaxially oriented molecular pipe, and simultaneously driving the biaxially oriented molecular pipe to move downwards to the designated position;
s2, the upper forming die moves downwards to be in contact with the lower forming die to complete die assembly;
s3, filling pressure air into the inflatable sleeve after die assembly to enable the inflatable sleeve to radially expand, and simultaneously expanding two ends of the biaxially oriented molecular tube to enable the two ends of the biaxially oriented molecular tube to expand and clamp into the upper tube positioning annular groove and the lower tube positioning annular groove, and enable the two ends to form a positioning sealing state;
s4, pressure air enters the plastic pipe through air outlets uniformly distributed on the cylindrical surface of the porous metal core, because a closed space is formed inside the biaxially oriented molecular pipe, the pipe wall expands to an upper cavity for forming the socket and a lower cavity for forming the socket in the radial direction under the action of the pressure air, and axial stretching is realized while the expansion is carried out, so that the socket forming of the pipe is completed, air between the outer wall of the biaxially oriented molecular pipe and the mold cavity is discharged through air outlets at two ends in the expansion process, then the upper forming mold is opened after pressure maintaining and cooling forming and pressure air releasing, the hollow mandrel is moved upwards to realize demolding, the holding device is utilized to clamp the formed pipe, then the air is released by the air-inflated sleeve, the hollow mandrel is moved to designated positions at two sides of the mold in the horizontal direction, and then the holding device is taken away, so that the forming of the molecularly oriented polyvinyl chloride connecting piece is completed.
In this embodiment, the biaxially oriented molecular tubing needs to be preheated at 80-150 ℃ for 20-40 min.
The technical scheme of the embodiment of the invention has at least the following advantages and beneficial effects:
according to the invention, the pipe is fixed through the pipe positioning ring groove arranged on the die of the air expansion sleeve arranged on the hollow mandrel; and high-pressure gas is introduced into the connecting piece through a porous metal core arranged on the hollow mandrel, so that the pipe is formed. The formed connecting piece has all the characteristics of the molecular orientation polyvinyl chloride pipe, and the connection quality of the whole pipeline system is ensured. The integration of pipe molding equipment is improved, and the process flow of pipe molding is simplified. Meanwhile, dry forming is adopted, so that the abrasion and corrosion effects of moisture on equipment dies and parts in wet forming are avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic axial cross-sectional view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a cross-sectional view of the present invention;
fig. 5 is an enlarged view at a.
Icon: the pipe positioning device comprises a hollow mandrel, an upper forming die, a lower forming die, a 4-inflatable sleeve, a 5-porous metal core, an upper pipe positioning annular groove, an upper 7-bellmouth forming cavity, a lower 8-bellmouth forming cavity, a 9-vent hole and a lower pipe positioning annular groove.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the azimuth or positional relationship indicated by the terms "inner", "outer", etc. appears to be based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "configured," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 5, the present embodiment provides a molding apparatus and a molding method for a molecular orientation connector.
In this embodiment, there is provided a molecular orientation connector molding apparatus including a hollow mandrel 1, an upper molding die 2, and a lower molding die 3. An inflatable sleeve 4 is arranged on the hollow mandrel 1 and is used for realizing sealing and positioning of the pipe. The top end of the hollow mandrel 1 is provided with a porous metal core 5 for injecting pressure gas into the pipe to form the pipe. The hollow mandrel 1 is provided with two symmetrical mounting at the both sides of the lower forming die 3 and coincides with the central axis of the lower forming die 3.
In this embodiment, the hollow mandrel 1 has a hollow cylindrical structure, and an air flow channel is provided inside. One end of the hollow mandrel 1 is communicated with a high-pressure air source, and the other end is communicated with the porous metal core 5. And an inflatable sleeve 4 is arranged on the hollow mandrel 1, and the inflatable sleeve 4 surrounds the hollow mandrel 1 for a circle and is communicated with a high-pressure air source, so that the two ends of the pipe can be sealed by radial expansion. The porous metal core 5 is of a hollow cylindrical structure, one end of the porous metal core is open and communicated with the hollow mandrel 1, and the other end of the porous metal core is closed. And a plurality of air outlet holes are uniformly arranged on the porous metal core 5 and used for releasing high-pressure air.
In this embodiment, the symmetrical two ends of the upper molding die 2 are both provided with pipe positioning upper ring grooves 6, and the middle position of the upper molding die 2 is provided with a socket molding upper cavity 7. The two symmetrical ends of the lower forming die 3 are respectively provided with a pipe positioning lower annular groove 10, and the middle position of the lower forming die 3 is provided with a socket forming lower cavity 8. After the inflatable sleeve 4 is inflated, two ends of the pipe are inflated and clamped into the pipe positioning upper annular groove 6 and the pipe positioning lower annular groove 10, so that sealing and positioning of the pipe are realized. The socket forming upper cavity 7 and the socket forming lower cavity 8 form a socket forming die cavity, so that the pipe can be processed into a set structure. The lower molding die 3 is provided with an exhaust hole 9 for exhausting air between the pipe and the cavity of the socket molding die.
In this embodiment, a method for forming a molecular orientation connector is provided, including the above-mentioned molecular orientation connector forming apparatus, and including the following steps:
s1, placing a biaxially oriented molecular pipe between horizontal concentric positions of two hollow mandrels 1 by using a clamping device, horizontally moving the hollow mandrels 1 at two ends to a designated position in the center of a die, simultaneously inserting the two hollow mandrels 1 into an inner cavity of the biaxially oriented molecular pipe, and simultaneously driving the biaxially oriented molecular pipe to move downwards to the designated position by the two hollow mandrels 1;
s2, the upper forming die 2 moves downwards to be in contact with the lower forming die 3 to complete die assembly;
s3, filling pressure air into the inflatable sleeve 4 after die assembly to enable the inflatable sleeve 4 to radially expand, and simultaneously expanding two ends of the biaxially oriented molecular tube to enable the two ends of the biaxially oriented molecular tube to expand and clamp into the upper tube positioning annular groove 6 and the lower tube positioning annular groove 10, and enable the two ends to form a positioning sealing state;
s4, pressure air enters the biaxial orientation molecular tube through air outlets uniformly distributed on the cylindrical surface of the porous metal core 5, because a closed space is formed in the biaxial orientation molecular tube, the tube wall expands to an upper die cavity 7 for forming the socket and a lower die cavity 8 for forming the socket in the radial direction under the action of the pressure air, axial stretching is realized while expansion is carried out, the socket forming of the tube is completed, air between the outer wall of the biaxial orientation molecular tube and the die cavity in the expansion process is discharged through air outlets 9 at two ends, the upper forming die 2 is opened after pressure maintaining and cooling forming and pressure air releasing are carried out, the hollow mandrel 1 is moved upwards to realize demoulding, the air-expanding sleeve 4 releases the pressure air after the formed tube is clamped by the clamping device, then the hollow mandrel 1 moves to the designated positions at two sides of the die in the horizontal direction, and the clamping device is immediately taken away, so that the forming of the molecular orientation polyvinyl chloride connecting piece is completed.
In this example, the processed biaxially oriented molecular tubing needs to be preheated at 80-150 ℃ for 20-40 min. The molecular orientation connecting piece formed by the invention can be used for connecting pipes to form a complete drainage pipeline system. The molecular orientation connector can adopt one of polyvinyl chloride, polyethylene, polypropylene and ABS as raw materials. The appearance shape of the molecular orientation connecting piece can be straight or bent, thereby meeting the requirements of different connecting application scenes.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The molecular orientation connecting piece forming equipment comprises a hollow mandrel, an upper forming die and a lower forming die, wherein the hollow mandrels are arranged at two ends of the lower forming die, and the molecular orientation connecting piece forming equipment is characterized in that an air expansion sleeve is arranged on the hollow mandrel, one end of the hollow mandrel is connected with a porous metal core, and the other end of the hollow mandrel is connected with a high-pressure air source.
2. The molding apparatus of claim 1, wherein the molding apparatus comprises,
the hollow mandrel is of a hollow cylindrical structure, and an air flow channel is arranged in the hollow mandrel.
3. The molding apparatus of claim 2, wherein the molding apparatus comprises,
the porous metal core is of a hollow cylindrical structure, a plurality of air outlet holes are uniformly formed in the porous metal core, and the porous metal core is communicated with the hollow mandrel.
4. The molding apparatus of claim 1, wherein the molding apparatus comprises,
the two ends of the upper forming die are provided with pipe positioning upper ring grooves, and a socket forming upper cavity is arranged in the middle of the upper forming die.
5. The molding apparatus of claim 1, wherein the molding apparatus comprises,
and both ends of the lower forming die are provided with lower pipe positioning ring grooves, and a socket forming lower cavity is arranged in the middle of the lower forming die.
6. The molding apparatus of claim 5, wherein the molding apparatus comprises,
the lower forming die is provided with a plurality of exhaust holes.
7. The molecular orientation connector molding method is characterized by being applied to the molecular orientation polyvinyl chloride connector molding equipment according to any one of claims 1-6, and further comprising the following using steps:
s1, placing a biaxially oriented molecular pipe between horizontal concentric positions of two hollow mandrels by using a clamping device, horizontally moving the hollow mandrels at two ends to a designated position in the center of a die, inserting the two hollow mandrels into an inner cavity of the biaxially oriented molecular pipe, and simultaneously driving the biaxially oriented molecular pipe to move downwards to the designated position;
s2, the upper forming die moves downwards to be in contact with the lower forming die to complete die assembly;
s3, filling pressure air into the inflatable sleeve after die assembly to enable the inflatable sleeve to radially expand, and simultaneously expanding two ends of the biaxially oriented molecular tube to enable two ends of the biaxially oriented molecular tube to be expanded and clamped into the tube positioning upper annular groove and the tube positioning lower annular groove, and enable two ends to form a positioning sealing state;
s4, pressure air enters the biaxial orientation molecular tube through air outlets uniformly distributed on the cylindrical surface of the porous metal core, because a closed space is formed in the biaxial orientation molecular tube, the tube wall expands to an upper cavity for forming the socket and a lower cavity for forming the socket in the radial direction under the action of the pressure air, and axial stretching is realized while the expansion is carried out, so that the socket forming of the tube is completed, air between the outer wall of the biaxial orientation molecular tube and the die cavity in the expansion process is discharged through air outlets at two ends, then the upper forming die is opened after pressure maintaining and cooling forming and pressure air releasing, the hollow mandrel is moved upwards to realize demoulding, the air expansion sleeve releases the pressure air after the formed connecting piece is clamped by the clamping device, then the clamping device is taken away immediately, and the forming of the molecular orientation connecting piece is completed.
8. The molding method as claimed in claim 7, wherein,
the biaxial orientation molecular tube needs to be preheated for 20-40 min at the temperature of 80-150 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211628069.XA CN116330566A (en) | 2022-12-16 | 2022-12-16 | Forming equipment and forming method for molecular orientation connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211628069.XA CN116330566A (en) | 2022-12-16 | 2022-12-16 | Forming equipment and forming method for molecular orientation connecting piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116330566A true CN116330566A (en) | 2023-06-27 |
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ID=86884686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211628069.XA Pending CN116330566A (en) | 2022-12-16 | 2022-12-16 | Forming equipment and forming method for molecular orientation connecting piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116330566A (en) |
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2022
- 2022-12-16 CN CN202211628069.XA patent/CN116330566A/en active Pending
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