CN114274423B - Automatic M-shaped film forming mechanism - Google Patents
Automatic M-shaped film forming mechanism Download PDFInfo
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- CN114274423B CN114274423B CN202111284928.3A CN202111284928A CN114274423B CN 114274423 B CN114274423 B CN 114274423B CN 202111284928 A CN202111284928 A CN 202111284928A CN 114274423 B CN114274423 B CN 114274423B
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Abstract
The application discloses an automatic M-shaped film forming mechanism which comprises a die holder, wherein a processing groove is formed in the side wall of the die holder, a fixed die plate is embedded in the processing groove, a die plate is connected in a sliding manner in the processing groove, a material injecting device for injecting materials is arranged on a movable die plate, an air guide groove is formed in the side wall of the fixed die plate, a plurality of air outlet holes are formed in the side wall of the air guide groove, an air blowing groove is formed in the side wall of the die holder, an air pumping device for pumping air to the air blowing groove is arranged in the air blowing groove, a driving groove is formed in the side wall of the die holder, and a sliding block is connected in the driving groove in a sliding manner. According to the application, the air guide groove, the air outlet holes and the air pumping device are arranged, so that when the movable mould plate moves back to separate the formed mould plates, the air pumping device synchronously operates, and air can be continuously blown out along each air outlet hole, thereby blowing out the M-shaped film adhered on the fixed mould plate, quickly and easily removing the formed M-shaped film, and greatly reducing the difficulty of removing the M-shaped film.
Description
Technical Field
The application relates to the related technical field of packaging bag processing equipment, in particular to an automatic M-shaped film forming mechanism.
Background
In the current processing process of the packaging bag, an M-shaped polyethylene film is added in the inner layer of the packaging bag so as to prevent the conditions of moisture absorption, odor tainting and the like.
In the conventional M-shaped film processing, a molten raw material is extruded into a mechanism such as a molding template by an extruding device to be cooled and molded, and the film is removed after molding. However, the M-shaped film has a large bonding surface with the forming mechanism, and the folding angle is large, so that the M-shaped film is easy to adhere to the forming surface of the template after being cooled, the M-shaped film is difficult to demould, the film taking speed is low, and the processing efficiency is low. Accordingly, the present document proposes an automatic M-type film forming mechanism.
Disclosure of Invention
The application aims to solve the defects in the prior art and provides an automatic M-shaped film forming mechanism.
In order to achieve the above purpose, the present application adopts the following technical scheme:
the utility model provides an automatic M type membrane forming mechanism, includes the die holder, processing groove has been seted up to the lateral wall of die holder, processing inslot embeds and is equipped with the fixed die plate, sliding connection has the template in the processing groove, install the notes material device that is used for annotating the material on the movable die plate, the air guide groove has been seted up to the lateral wall of fixed die plate, a plurality of ventholes have been seted up to the lateral wall of air guide groove, the air blowing groove has been seted up to the lateral wall of die holder, install the pumping device of air guide groove pump in the air blowing groove, the drive groove has been seted up to the lateral wall of die holder, sliding connection has the slider in the drive groove, the threaded rod with slider threaded connection is in the drive groove, the threaded rod is seted up to the lateral wall of die holder, install drive device of drive pivoted in the mechanism groove.
Preferably, the air pumping device comprises a sliding plug which is connected in the air blowing groove in a sliding way, the air blowing groove is communicated with the air guide groove through an air outlet pipe, an air inlet pipe which is communicated with the air blowing groove is arranged on the die holder, one-way valves are arranged in the air inlet pipe and each air outlet hole, and a pushing mechanism for pushing the sliding plug to move is arranged on the sliding plug.
Preferably, the driving device is rotationally connected with a driven gear in the mechanism groove, one end of the threaded rod, which is far away from the sliding block, is fixedly connected with the driven gear, the driving gear is rotationally connected with the mechanism groove, the side wall of the die holder is fixedly connected with a driving motor, an output shaft of the driving motor is fixedly connected with the driving gear, a transmission gear is rotationally connected with the inner wall of the mechanism groove, and a moving mechanism for moving the transmission gear is arranged on the transmission gear.
Preferably, the air guide groove is internally and hermetically connected with a piston in a sliding manner, the lower end of the piston is fixedly connected with a spring, and the lower end of the spring is fixedly connected with the inner bottom of the air guide groove.
Preferably, the pushing mechanism comprises a driving rod fixedly connected to the side wall of the sliding plug, one end of the driving rod, far away from the sliding plug, is rotationally connected with the pushing rod, a rotary groove communicated with the air blowing groove is formed in the side wall of the die holder, a through hole is formed in the inner bottom of the rotary groove, a driving wheel is rotationally connected in the rotary groove, one end, far away from the driving rod, of the pushing rod is rotationally connected to the side wall of the driving wheel, and the driving wheel is connected with the driving gear through a one-way bearing.
Preferably, the moving mechanism comprises a rotating shaft fixedly connected to the axis of the transmission gear, a strip-shaped groove is formed in the side wall of the die holder, a hydraulic cylinder is installed in the strip-shaped groove, a push plate is fixedly connected to the telescopic end of the hydraulic cylinder, and one end, far away from the transmission gear, of the rotating shaft is rotatably connected to the push plate.
Preferably, the material injection device comprises a hopper arranged on a die holder, a material conveying mechanism communicated with the hopper is arranged on the die holder, a material conveying pipe is arranged on the material conveying mechanism, and a material discharging end of the material conveying pipe is arranged on a forming surface of the movable die plate.
Preferably, the two opposite side walls of the movable mould plate are fixedly connected with guide plates, the two opposite side walls of the processing groove are provided with guide grooves, and the guide plates are slidably connected in the adjacent wire grooves.
The application has the following beneficial effects:
1. by arranging the air guide groove, the air outlet holes and the air pumping device, when the movable mould plate moves back to separate the moulding mould plates, the air pumping device runs synchronously, and air can be continuously blown out along each air outlet hole, so that the M-shaped film adhered on the fixed mould plate is blown out, the moulded M-shaped film can be quickly and easily taken down, and the difficulty of taking down the M-shaped film is greatly reduced;
2. through setting up driving gear, drive gear, driven gear and moving mechanism, can be when shaping is processed, release drive gear through moving mechanism, driving gear accessible drive gear drives driven gear and rotates this moment to make the movable mould board remove and carry out the compound die under the cooperation effect of parts such as threaded rod and slip, and after processing, each part is reverse, can pull back the movable mould board, and make the operation of pumping device carry out the high-efficient demoulding simultaneously, so can make M type shaping processing action and pumping device operation can rationally go on in step, improved the shaping machining efficiency of M type membrane greatly.
Drawings
FIG. 1 is a schematic diagram of an automatic M-type film forming mechanism according to the present application;
FIG. 2 is a schematic diagram of a side mating structure of a driving gear, a driving gear and a driven gear of an automatic M-shaped film forming mechanism according to the present application;
FIG. 3 is a schematic diagram of a pushing mechanism of an automatic M-type film forming mechanism according to the present application;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 1;
fig. 5 is an enlarged schematic view of the structure at B in fig. 1.
In the figure: the device comprises a die holder 1, a processing groove 2, a movable die plate 3, a fixed die plate 4, a mechanism groove 5, a material conveying pipe 6, a material conveying mechanism 7, a hopper 8, a driving groove 9, a sliding block 10, a threaded rod 11, a supporting rod 12, a driven gear 13, a bar-shaped groove 14, a hydraulic cylinder 15, a transmission gear 16, a rotating shaft 17, a pushing plate 18, a driving gear 19, a driving motor 20, a rotating groove 21, a through hole 22, a driving wheel 23, an air blowing groove 24, a sliding plug 25, a pushing rod 26, a driving rod 27, an air inlet pipe 28, an air outlet pipe 29, an air guide groove 30, an air outlet hole 31, a piston 32 and a spring 33.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Referring to fig. 1-5, an automatic M-shaped film forming mechanism comprises a die holder 1, a processing groove 2 is formed in the side wall of the die holder 1, a fixed die plate 4 is embedded in the processing groove 2, a movable die plate 3 is connected in a sliding manner in the processing groove 2, guide plates are fixedly connected to two opposite side walls of the movable die plate 3, guide grooves are formed in two opposite side walls of the processing groove 2, material injecting devices for injecting materials are arranged on the movable die plates 3 in adjacent wire grooves in a sliding manner, each material injecting device comprises a hopper 8 arranged on the die holder 1, a material conveying mechanism 7 communicated with the hopper 8 is arranged on the die holder 1, a material conveying pipe 6 is arranged on the material conveying mechanism 7, and a material discharging end of the material conveying pipe 6 is arranged on a forming surface of the movable die plate 3. The injection device and the feed mechanism have the same structure and installation manner as those of the conventional M-type film forming apparatus, and can feed the molten raw material to the forming member, and are not related to the present design, and therefore are only briefly described.
The side wall of the air guide groove 30 is provided with a plurality of air outlet holes 31, the side wall of the die holder 1 is provided with an air blowing groove 24, the air blowing groove 24 is internally provided with an air pumping device for pumping air to the air guide groove 30, the air pumping device comprises a sliding plug 25 which is connected in the air blowing groove 24 in a sliding manner, the air blowing groove 24 is communicated with the air guide groove 30 through an air outlet pipe 29, the die holder 1 is provided with an air inlet pipe 28 communicated with the air blowing groove 24, the air inlet pipe 28 and the air outlet holes 31 are internally provided with one-way valves, specifically, the one-way valves in the air inlet pipe 28 only allow air to flow into the air blowing groove 24 from the air inlet pipe 28, the one-way valves in the air outlet holes 31 only allow air to flow out of the air outlet holes 31, and the extruded raw materials can be prevented from flowing into the air outlet holes 31 by arranging the one-way valves in the air outlet holes 31.
The slide plug 25 is provided with a pushing mechanism for pushing the slide plug 25 to move. The air guide groove 30 is formed in the side wall of the fixed template 4, the piston 32 is connected in the air guide groove 30 in a sealing sliding mode, the spring 33 is fixedly connected to the lower end of the piston 32, and the lower end of the spring 33 is fixedly connected to the inner bottom of the air guide groove 30. It should be noted that, by arranging the piston 32 and the spring 33, after the air is blown into the air guide groove 30 by the air pumping device, the piston 32 is pushed to move upwards, when the piston 32 moves to the upper part of one air outlet hole 31, part of air flow is sprayed out by the air outlet hole 31, the air flow sprayed out by the single air outlet hole 31 is stronger and acts on one point of the M-shaped film, so that the one point of the M-shaped film adhered to the fixed die plate 4 can be forcefully jacked up, and along with the continuous upward movement of the piston 32, the air flow is sequentially discharged outwards from each air outlet hole 31, so that the adhering positions of the M-shaped film can be sequentially separated, and when the air flow is finally discharged together from all the air outlet holes 31, the M-shaped film can be ensured to be thoroughly blown out of the fixed die plate 4.
The side wall of the die holder 1 is provided with a driving groove 9, a sliding block 10 is connected in the driving groove 9 in a sliding way, a threaded rod 11 in threaded connection with the sliding block 10 is connected in the driving groove 9 in a rotating way, the sliding block 10 is fixedly connected with the movable die plate 3 through a supporting rod 12, the side wall of the die holder 1 is provided with a mechanism groove 5, and a driving device for driving the threaded rod 11 to rotate is arranged in the mechanism groove 5. The driving device is rotationally connected with a driven gear 13 in the mechanism groove 5, one end of the threaded rod 11 far away from the sliding block 10 is fixedly connected with the driven gear 13, a driving gear 19 is rotationally connected with the mechanism groove 5, a driving motor 20 is fixedly connected with the side wall of the die holder 1, an output shaft of the driving motor 20 is fixedly connected with the driving gear 19, a transmission gear 16 is rotationally connected with the inner wall of the mechanism groove 5, and a moving mechanism for moving the transmission gear 16 is arranged on the transmission gear 16.
The pushing mechanism comprises a driving rod 27 fixedly connected to the side wall of the sliding plug 25, one end, far away from the sliding plug 25, of the driving rod 27 is rotationally connected with a pushing rod 26, a rotary groove 21 communicated with the air blowing groove 24 is formed in the side wall of the die holder 1, a through hole 22 is formed in the inner bottom of the rotary groove 21, a driving wheel 23 is rotationally connected to the rotary groove 21, one end, far away from the driving rod 27, of the pushing rod 26 is rotationally connected to the side wall of the driving wheel 23, and the driving wheel 23 is connected with the driving gear 19 through a one-way bearing. The moving mechanism comprises a rotating shaft 17 fixedly connected to the axis of the transmission gear 16, a strip-shaped groove 14 is formed in the side wall of the die holder 1, a hydraulic cylinder 15 is installed in the strip-shaped groove 14, a push plate 18 is fixedly connected to the telescopic end of the hydraulic cylinder 15, and one end, far away from the transmission gear 16, of the rotating shaft 17 is rotatably connected to the push plate 18. By providing the hydraulic cylinder 15, the push plate 18, the rotating shaft 17 and the transmission gear 16, on one hand, the movement of the movable mold plate 3 can be controlled by controlling the movement of the transmission gear 16, so that the movable mold plate 3 can be more effectively controlled to prevent dangerous accidents such as die collision caused by out-of-control of a motor, on the other hand, after the movable mold plate 3 leaves the fixed mold plate 4 and the die separation action is completed, the driving motor 20 still continues to drive the driving gear 19 to rotate reversely and enable the pumping device to operate, so that cooling air flow can be continuously blown out to the air outlet hole 31, the temperature of a forming part is reduced, and the next M-shaped film can be cooled more quickly, so that the processing efficiency of the M-shaped film can be improved.
In the use process of the device, when the forming processing is carried out, the hydraulic cylinder 15 is started and the telescopic end of the hydraulic cylinder is extended, so that the push plate 18 is pushed to move outwards, the rotating shaft 17 and the transmission gear 16 can be ejected out, and the transmission gear 16 is meshed with the driving gear 19 and the driven gear 13.
Then, the driving motor 20 is started and rotated forward, so that the driving gear 19 can be driven to rotate synchronously, at the moment, under the action of the one-way bearing, the driving gear 19 does not drive the driving wheel 23 to rotate, and the driven gear 13 is driven to rotate through the transmission gear 16, so that the threaded rod 11 can rotate synchronously, finally the sliding block 10 which is in threaded connection with the threaded rod 11 moves rightwards, the movable mold plate 3 is pushed to move towards the fixed mold plate 4 through the supporting rod 12, the driving motor 20 stops rotating after the mold closing action is completed, at the moment, the feeding mechanism 7 runs, raw materials in a molten state can be conveyed into a forming gap between the movable mold plate and the fixed mold plate 4 through the feeding pipe 6, and the forming of an M-shaped film is completed.
After the processing is finished, the driving motor 20 is reversed, and under the transmission action of the driving gear 19, the transmission gear 16 and the driven gear 13, the threaded rod 11 is overturned, and the sliding block 10, the supporting rod 12 and the movable mould plate 3 are moved left to finish the mould separating action. Because the raw materials are conveyed to the direction of the fixed die plate 4 through the conveying pipe 6 on the movable die plate 3, under the action of conveying pressure, the M-shaped film is pushed to the molding surface of the fixed die plate 4, after the die parting action is completed, the hydraulic cylinder 15 is started again to shrink, so that the push plate 18, the rotating shaft 17 and the transmission gear 16 can be pulled to move back, the driven gear 13 and the threaded rod 11 stop rotating, and the slide block 10, the support rod 12 and the movable die plate 3 stop moving so as to facilitate the next die closing. In addition, in the process that the driving motor 20 drives the driving gear 19 to rotate reversely, the driving wheel 23 can be driven by the unidirectional bearing to rotate continuously and circularly, and the pushing rod 26 on the driving wheel is driven to rotate synchronously, so that the interval between the pushing rod 26 and the sliding plug 25 shows periodic change, and the sliding plug 25 can be pushed to reciprocate back and forth by the driving rod 27. Under the flow limiting effect of the check valves in the air inlet pipe 28 and the air outlet hole 31, when the sliding plug 25 moves leftwards, negative pressure can be generated by increasing the space on the right side of the sliding plug 25 and air is pumped in along the air inlet pipe 28, and when the sliding plug 25 moves rightwards, internal air can be blown out of the air outlet hole 31 along the air outlet pipe 29 and the air guide groove 30, so that M-shaped films adhered to the molding surface of the fixed mold plate 4 are blown out, the molded M-shaped films are caused to fall off, and the demolding difficulty of the M-shaped films is greatly reduced.
In addition, because the air pumping device completes the blowing of the M-shaped film synchronously when the movable mould plate 3 divides the mould, the M-shaped forming and processing action and the operation of the air pumping device can be reasonably and synchronously carried out, and the forming and processing efficiency of the M-shaped film is greatly improved.
The foregoing is only a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art, who is within the scope of the present application, should make equivalent substitutions or modifications according to the technical scheme of the present application and the inventive concept thereof, and should be covered by the scope of the present application.
Claims (5)
1. The utility model provides an automatic M type membrane forming mechanism, includes die holder (1), its characterized in that, processing groove (2) have been seted up to the lateral wall of die holder (1), processing groove (2) are embedded to be equipped with fixed die plate (4), sliding connection has slider (3) in processing groove (2), install the notes material device that is used for annotating the material on movable die plate (3), air guide groove (30) have been seted up to the lateral wall of fixed die plate (4), a plurality of ventholes (31) have been seted up to the lateral wall of air guide groove (30), air blowing groove (24) have been seted up to the lateral wall of die holder (1), air blowing groove (24) internally mounted has air blowing groove (30) pump air pumping device, driving groove (9) have been seted up to the lateral wall of die holder (1), sliding connection has slider (10) in driving groove (9), driving groove (9) internal rotation is connected with threaded rod (11) threaded connection, slider (10) pass through bracing piece (12) and 3) are connected with the lateral wall of movable die plate (4), air blowing groove (24) are equipped with slider (5) in driving groove (25), the air blowing groove (24) is communicated with the air guiding groove (30) through an air outlet pipe (29), an air inlet pipe (28) communicated with the air blowing groove (24) is arranged on the die holder (1), one-way valves are respectively arranged in the air inlet pipe (28) and each air outlet hole (31), a pushing mechanism for pushing the sliding plug (25) to move is arranged on the sliding plug (25), a driving device is rotationally connected with a driven gear (13) in the mechanism groove (5), one end of a threaded rod (11) far away from the sliding block (10) is fixedly connected with the driven gear (13), a driving gear (19) is rotationally connected with the mechanism groove (5), a driving motor (20) is fixedly connected with the side wall of the die holder (1), a transmission gear (16) is rotationally connected with the inner wall of the mechanism groove (5), a moving mechanism for enabling the sliding plug (25) to move is arranged on the transmission gear (16), the moving mechanism comprises a driven gear (13) fixedly connected with the axis (16), one end of the threaded rod (11) far away from the sliding block (10) is fixedly connected with the driven gear (13), a driving gear (19) is rotationally connected with the side wall of the driving motor (20), the driving gear (19), the driving gear (20) is fixedly connected with the driving gear (19), the driving gear (16), the inner wall is fixedly connected with the inner wall of the driving gear (5), and the inner driving gear is rotationally, and the inner driving gear, and the driving device
(17) One end far away from the transmission gear (16) is rotatably connected to the push plate (18).
2. The automatic M-type membrane forming mechanism according to claim 1, wherein a piston (32) is connected in the air guide groove (30) in a sealing and sliding manner, a spring (33) is fixedly connected to the lower end of the piston (32), and the lower end of the spring (33) is fixedly connected to the inner bottom of the air guide groove (30).
3. An automatic M-type film forming mechanism according to claim 1, characterized in that the pushing mechanism comprises a driving rod (27) fixedly connected to the side wall of the sliding plug (25), one end of the driving rod (27) away from the sliding plug (25) is rotatably connected with a pushing rod (26), a rotary groove (21) communicated with the air blowing groove (24) is formed in the side wall of the die holder (1), a through hole (22) is formed in the inner bottom of the rotary groove (21), a driving wheel (23) is rotatably connected to the rotary groove (21), one end of the pushing rod (26) away from the driving rod (27) is rotatably connected to the side wall of the driving wheel (23), and the driving wheel (23) is connected with the driving gear (19) through a one-way bearing.
4. An automatic M-type film forming mechanism according to claim 1, wherein the material injecting device comprises a hopper (8) arranged on a die holder (1), a material conveying mechanism (7) communicated with the hopper (8) is arranged on the die holder (1), a material conveying pipe (6) is arranged on the material conveying mechanism (7), and a material discharging end of the material conveying pipe (6) is arranged on a forming surface of the movable die plate (3).
5. The automatic M-type film forming mechanism as claimed in claim 1, wherein two opposite side walls of said movable mold plate (3) are fixedly connected with guide plates, two opposite side walls of said processing groove (2) are provided with guide grooves, said guide grooves are formed
The plates are slidably coupled within adjacent ones of the wire channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111284928.3A CN114274423B (en) | 2021-11-01 | 2021-11-01 | Automatic M-shaped film forming mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111284928.3A CN114274423B (en) | 2021-11-01 | 2021-11-01 | Automatic M-shaped film forming mechanism |
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| Publication Number | Publication Date |
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| CN114274423A CN114274423A (en) | 2022-04-05 |
| CN114274423B true CN114274423B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111284928.3A Active CN114274423B (en) | 2021-11-01 | 2021-11-01 | Automatic M-shaped film forming mechanism |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1604468A1 (en) * | 1966-06-01 | 1970-10-29 | Color Fabrik Karlheinz B Kinde | Process for the shaping of moldings produced in divisible molds and equipment for carrying out the process |
| US6187247B1 (en) * | 1998-05-13 | 2001-02-13 | Velcro Industries B.V. | Injection molding parts with fastener elements |
| CN207549302U (en) * | 2017-09-12 | 2018-06-29 | 佛山市顺德区铭三锋模具有限公司 | A kind of multi-start worm transmission rotary system of mold |
| CN109676883A (en) * | 2019-01-08 | 2019-04-26 | 山东福润橡塑科技有限公司 | A kind of rapid cooling formula injection moulding apparatus |
| CN211640788U (en) * | 2019-12-23 | 2020-10-09 | 青岛国润精工有限责任公司 | Quick mould taking injection mold |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201504498D0 (en) * | 2015-03-17 | 2015-04-29 | Penso Holdings Ltd | Method and apparatus for production of carbon fibre components |
| EP3452262B1 (en) * | 2016-05-04 | 2020-07-01 | Nypromold Inc. | Hydraulic advancement/postponement assembly |
-
2021
- 2021-11-01 CN CN202111284928.3A patent/CN114274423B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1604468A1 (en) * | 1966-06-01 | 1970-10-29 | Color Fabrik Karlheinz B Kinde | Process for the shaping of moldings produced in divisible molds and equipment for carrying out the process |
| US6187247B1 (en) * | 1998-05-13 | 2001-02-13 | Velcro Industries B.V. | Injection molding parts with fastener elements |
| CN207549302U (en) * | 2017-09-12 | 2018-06-29 | 佛山市顺德区铭三锋模具有限公司 | A kind of multi-start worm transmission rotary system of mold |
| CN109676883A (en) * | 2019-01-08 | 2019-04-26 | 山东福润橡塑科技有限公司 | A kind of rapid cooling formula injection moulding apparatus |
| CN211640788U (en) * | 2019-12-23 | 2020-10-09 | 青岛国润精工有限责任公司 | Quick mould taking injection mold |
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| CN114274423A (en) | 2022-04-05 |
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