CN219600369U - High-efficient cooling type straight bathtub make-up machine - Google Patents

High-efficient cooling type straight bathtub make-up machine Download PDF

Info

Publication number
CN219600369U
CN219600369U CN202320431648.9U CN202320431648U CN219600369U CN 219600369 U CN219600369 U CN 219600369U CN 202320431648 U CN202320431648 U CN 202320431648U CN 219600369 U CN219600369 U CN 219600369U
Authority
CN
China
Prior art keywords
base
plate
bathtub
side plates
bottom plate
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.)
Active
Application number
CN202320431648.9U
Other languages
Chinese (zh)
Inventor
张恪凡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Dongxing Composite Material Product Co ltd
Original Assignee
Nanjing Dongxing Composite Material Product Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing Dongxing Composite Material Product Co ltd filed Critical Nanjing Dongxing Composite Material Product Co ltd
Priority to CN202320431648.9U priority Critical patent/CN219600369U/en
Application granted granted Critical
Publication of CN219600369U publication Critical patent/CN219600369U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/50Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57Improving the yield, e-g- reduction of reject rates

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

The utility model provides a high-efficiency cooling type straight-through bathtub forming machine which comprises a base, wherein a vertical plate is arranged on the base in a sliding mode along the two ends of the base in the length direction, an electric hydraulic cylinder connected with the vertical plate is fixedly arranged on the base, side plates are hinged to the base along the two ends of the base in the width direction, an electric push rod for driving the side plates to rotate is arranged on the base, and a bottom plate is arranged on the base. According to the utility model, the cooling mechanisms are arranged on the bottom plate, the two side plates and the two vertical plates, so that the bottom plate, the two side plates and the two vertical plates can be cooled, and the bathtub which is in contact with the bottom plate, the two side plates and the two vertical plates after vacuumizing molding is cooled, so that the mode of air cooling the molded bathtub by a fan is replaced, the integral cooling of the bathtub is uniform, the cooling effect is good, the cooling speed of the molded bathtub is improved, and the production efficiency of the bathtub is improved.

Description

High-efficient cooling type straight bathtub make-up machine
Technical Field
The utility model relates to the technical field of bathtub production equipment, in particular to a high-efficiency cooling type straight-air bathtub forming machine.
Background
The acrylic bathtub is made of PMMA plastic materials, and the acrylic bathtub body is formed by compounding a surface layer and an inner layer. Features rich shape, light weight, good surface finish and low cost. However, acrylic materials have the defects of poor high temperature resistance, pressure resistance and wear resistance and easy aging of the surface; when the acrylic bathtub is produced, the acrylic plate is integrally formed by adopting the straight-hollow bathtub forming machine.
When the existing straight-air bathtub forming machine is used for integrally forming an acrylic plate into a bathtub, the thermoplastic acrylic plate is placed at the top of a support of the straight-air bathtub forming machine, a model groove is formed in the support, the acrylic plate is placed at the top of the support of the straight-air bathtub forming machine, and then the model groove is vacuumized through an external vacuumizing machine, so that the acrylic plate is found to be deformed into the bathtub, when the bathtub is subjected to blanking after being formed, the acrylic plate needs to be cooled firstly, and at present, when the bathtub is cooled, the bathtub is cooled in a blowing mode by adopting a fan.
In the process of cooling the bathtub after molding, the following problems exist:
when carrying out the forced air cooling to the bathtub through the fan, because the fan is direct blowing, not even enough to the whole cooling of bathtub, the cooling effect is poor, has reduced the bathtub cooling rate after to the shaping, has reduced the production efficiency of bathtub.
In summary, there is a need for a straight bathtub forming machine that improves cooling efficiency.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a high-efficiency cooling type straight bathtub forming machine, which solves the problems in the background art.
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
the utility model provides a high-efficient cooling type straight empty bathtub make-up machine, includes the base, on the base and along its length direction both ends slidable mounting have the riser, fixed mounting has the electronic pneumatic cylinder that is connected with the riser on the base, on the base and along its width direction both ends all articulated have the curb plate, install the electric putter that is used for driving the curb plate to rotate on the base, install the bottom plate on the base, when both ends and two curb plates homoenergetic laminating of two risers, the bottom plate is laminated with the cross-section homoenergetic of two risers and two curb plates;
and the bottom plate, the vertical plate and the side plates are respectively provided with a cooling mechanism acting on the bottom plate, the vertical plate and the side plates.
Further: the cooling mechanism includes:
the semiconductor refrigerating plate comprises a base plate, a vertical plate, a side plate, a semiconductor refrigerating plate, a heat radiating piece, a heat conducting plate, a heat radiating piece and a heat radiating plate.
Further: the heat dissipation part comprises a heat dissipation fan fixedly arranged on the conductive plate and positioned at the outer side of the heating end of the semiconductor refrigerating sheet, and an air inlet section of the heat dissipation fan is connected with the heating end of the semiconductor refrigerating sheet through a heat dissipation fin.
Further: the inside structure of conducting plate has the snakelike hole that the cross-section is snakelike, and the both ends in snakelike hole all run through the conducting plate, install the mechanism that admits air that is linked together with snakelike hole one end on the conducting plate.
Further: the air inlet mechanism comprises a connecting frame fixedly arranged on the conductive plate and communicated with one end of the snakelike hole, and a fan is fixedly arranged in the connecting frame.
Further: and the vent pipe communicated with the other end of the serpentine hole is fixedly arranged on the conductive plate, and the other end of the vent pipe is communicated with the connecting frame.
Further: the bottom plate is vertical direction slidable mounting on the base, two the interlock spare that is connected with the bottom plate is all installed on the curb plate, when the curb plate rotates on the base, through interlock spare so that the bottom plate slides on the base.
Further: the linkage piece comprises a hinge rod hinged on the side plate, and the other end of the hinge rod is hinged with the bottom plate.
The utility model provides a high-efficiency cooling type straight bathtub forming machine. Compared with the prior art, the method has the following beneficial effects:
through all setting up cooling mechanism on bottom plate, two curb plates and two risers, can cool off bottom plate, two curb plates and two risers to realize cooling down the bathtub that all contacts with bottom plate, two curb plates and two risers after the evacuation shaping, replaced the adoption and carried out the mode of forced air cooling to the bathtub after the shaping to the fan, it is comparatively even to cool off the bathtub is whole, and the cooling effect is good, has improved the bathtub cooling rate after the shaping, has improved the production efficiency of bathtub.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic perspective view of the present utility model;
FIG. 2 shows a front view of the present utility model;
FIG. 3 shows a cross-sectional view in the direction A-A of FIG. 2 of the present utility model;
FIG. 4 shows an enlarged view of the utility model at A in FIG. 3;
FIG. 5 shows a cross-sectional view in the direction B-B of FIG. 2 of the present utility model;
FIG. 6 shows a right side view of the present utility model;
FIG. 7 shows a cross-sectional view in the direction C-C of FIG. 6 in accordance with the present utility model;
FIG. 8 shows a cross-sectional view in the direction D-D in FIG. 6 in accordance with the present utility model;
FIG. 9 is a schematic view of the utility model after the completion of the cooling of the bathtub mold;
the figure shows: 1. a base; 2. a vertical plate; 3. an electro-hydraulic cylinder; 4. a side plate; 5. an electric push rod; 6. a bottom plate; 7. a cooling mechanism; 701. a conductive plate; 702. a semiconductor refrigeration sheet; 703. a heat sink; 7031. a heat radiation fan; 7032. a heat radiation fin; 8. a serpentine aperture; 9. an air inlet mechanism; 901. a connection frame; 902. a blowing fan; 10. a vent pipe; 11. a linkage member; 1101. and a hinge rod.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions in the embodiments of the present utility model are clearly and completely described, and it is obvious that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
In order to solve the technical problems in the background technology, a high-efficiency cooling type straight bathtub forming machine is provided as follows:
referring to fig. 1-9, the high-efficiency cooling type straight-air bathtub forming machine provided by the utility model comprises a base 1, wherein a vertical plate 2 is slidably arranged on the base 1 along two ends of the base in the length direction, an electric hydraulic cylinder 3 connected with the vertical plate 2 is fixedly arranged on the base 1, side plates 4 are hinged on the base 1 along two ends of the base in the width direction, an electric push rod 5 for driving the side plates 4 to rotate is arranged on the base 1, a bottom plate 6 is arranged on the base 1, and when two ends of two vertical plates 2 are in joint with two side plates 4, the bottom plate 6 is in joint with the cross sections of the two vertical plates 2 and the two side plates 4; the bottom plate 6, the vertical plate 2 and the side plates 4 are respectively provided with a cooling mechanism 7 acting on the bottom plate, the vertical plate and the side plates; the bottom plate 6 is slidably mounted on the base 1 in a vertical direction, the two side plates 4 are respectively provided with a linkage piece 11 connected with the bottom plate 6, and when the side plates 4 rotate on the base 1, the bottom plate 6 slides on the base 1 through the linkage pieces 11.
Through all setting up cooling mechanism 7 on bottom plate 6, two curb plates 4 and two risers 2, can cool off bottom plate 6, two curb plates 4 and two risers 2 to realize cooling down the bathtub that all contacts with bottom plate 6, two curb plates 4 and two risers 2 after the evacuation shaping, replaced the adoption and carried out the mode of forced air cooling to the bathtub after the shaping to the fan, it is comparatively even to cool down the bathtub overall, and the cooling effect is good, has improved the bathtub cooling rate after the shaping, has improved the production efficiency of bathtub.
Through setting up the interlock 11, after the bathtub cooling after to the shaping is accomplished, make two curb plates 4 reverse rotation on base 1 for when two curb plates 4 all do not contact with the bathtub, can make bottom plate 6 vertically upwards remove on base 1 through interlock 11, lift the bathtub, make the bathtub position be higher than the highest end of two curb plates 4, made things convenient for taking out the bathtub after the shaping.
Example two
As shown in fig. 1 to 9, on the basis of the above embodiment, the present embodiment further provides the following:
in the present embodiment, the cooling mechanism 7 includes: the conducting plate 701, the bottom plate 6, the vertical plate 2 and the side plates 4 are all provided with mounting grooves, and the specific is that: the mounting groove on the bottom plate 6 is arranged at the bottom of the bottom plate, the mounting grooves on the two vertical plates 2 are arranged on the opposite sides of the two vertical plates 2, the mounting grooves on the two side plates 4 are arranged on the opposite sides of the two side plates 4, and the conducting plate 701 is fixedly arranged in the mounting groove, and specifically, the following is to be stated: the conducting plate 701 is attached to the inner wall of the side, far away from the opening end, of the mounting groove, a semiconductor refrigerating plate 702 is fixedly mounted on the conducting plate 701, the refrigerating end of the semiconductor refrigerating plate 702 is attached to the conducting plate 701, and the conducting plate 701 is provided with a heat dissipation piece 703 for dissipating heat of the semiconductor refrigerating plate 702.
When cooling the bathtub after molding, the semiconductor refrigerating sheets 702 are controlled to be opened, the plurality of semiconductor refrigerating sheets 702 work to cool the plurality of conductive plates 701, so that the bottom plate 6, the two vertical plates 2 and the two side plates 4 are respectively cooled through the plurality of conductive plates 701, and the heat dissipation effect of heat generated during the operation of the semiconductor refrigerating sheets 702 is realized through the heat dissipation part 703.
In this embodiment, the heat dissipation member 703 includes a heat dissipation fan 7031 fixedly mounted on the conductive plate 701 and located outside the heating end of the semiconductor refrigeration sheet 702, and an air inlet section of the heat dissipation fan 7031 is connected to the heating end of the semiconductor refrigeration sheet 702 through a heat dissipation fin 7032.
When the semiconductor refrigeration piece 702 works, the cooling fan 7031 is controlled to be started, and when the semiconductor refrigeration piece 702 works, the heating section generates heat, and the heat is conducted to the cooling fin 7032, and as the air inlet section of the cooling fan 7031 is connected with the cooling fin 7032, the heat on the cooling fin 7032 can be dissipated, and the effect of dissipating the heat generated when the semiconductor refrigeration piece 702 works is achieved.
Example III
As shown in fig. 3, 5, 7 and 9, on the basis of the above-described embodiment, the present embodiment further gives the following:
in this embodiment, the conductive plate 701 is internally configured with a serpentine hole 8 having a serpentine cross section, and both ends of the serpentine hole 8 penetrate the conductive plate 701, and an air inlet mechanism 9 communicating with one end of the serpentine hole 8 is mounted on the conductive plate 701.
Utilize air inlet mechanism 9 to blow to in the snakelike hole 8 to make the circulation of air in the snakelike hole 8, the air gets into in the snakelike hole 8 and contacts with the conduction board 701, thereby makes the air become cold, in the circulation of air in-process, again conducts for the conduction board 701, makes the conduction board 701 receive the cold more even, thereby improves the cooling effect to the bathtub.
In this embodiment, the air intake mechanism 9 includes a connection frame 901 fixedly mounted on the conductive plate 701 and communicated with one end of the serpentine hole 8, and a blower fan 902 is fixedly mounted in the connection frame 901; the conducting plate 701 is fixedly provided with a vent pipe 10 communicated with the other end of the serpentine hole 8, and the other end of the vent pipe 10 is communicated with the connecting frame 901.
When the air blower is used, the air blower 902 is controlled to be started, and the air blower 902 works to realize the effect of blowing air into the snakelike holes 8; through setting up breather pipe 10, the air gets into in the snakelike hole 8 and the contact of conduction board 701 for after the air becomes cold, when flowing out through the snakelike hole 8 other end, can flow back to in the connecting frame 901 through breather pipe 10, thereby realize the effect to the retrieval and utilization of the air after becoming cold, improved the cooling effect to conduction board 701.
In this embodiment, the linkage 11 includes a hinge rod 1101 hinged to the side plate 4, specifically, the hinge rod 1101 is hinged below the connection between the side plate 4 and the base 1, and the other end of the hinge rod 1101 is hinged to the bottom plate 6.
Through setting up articulated rod 1101, when two curb plates 4 reverse rotation on base 1, when making two curb plate 4 free ends keep away from each other, two articulated rod 1101 rotate respectively on two curb plates 4, and take place to rotate between the other end of two articulated rod 1101 and bottom plate 6 to can make bottom plate 6 vertically upwards remove on base 1.
The working principle and the using flow of the utility model are as follows:
when the bathtub is molded:
through the cooperation of two electric hydraulic cylinders 3 and two electric push rods 5, make the cross-section homogeneous laminating of bottom plate 6 and two risers 2 and two curb plates 4 for form a model groove between bottom plate 6 and two risers 2 and two curb plates 4, place the ya keli board after thermoplastic in the top of two bottom plates 6 and two risers 2. The bottom plate 6, the two vertical plates 2 and the two side plates 4 are vacuumized in a model groove formed by an external vacuumizer, so that the organic glass plate can be molded into a bathtub;
when cooling after the bathtub is molded:
the semiconductor refrigeration piece 702, the cooling fan 7031 and the air supply fan 902 are controlled to be started, and the semiconductor refrigeration piece 702 works to cool the conductive plate 701, so that the formed bathtub is cooled through the bottom plate 6, the two vertical plates 2 and the two side plates 4;
and (3) taking out the formed bathtub after cooling:
the two vertical plates 2 are mutually far away from each other on the base 1 through the two electric hydraulic cylinders 3, the two side plates 4 are rotated on the base 1 through the two electric push rods 5, the free ends of the two side plates 4 are mutually far away from each other, and at the moment, the bottom plate 6 vertically moves upwards on the base 1 to lift the bathtub.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, 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 process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (8)

1. A high-efficient cooling type straight empty bathtub make-up machine, its characterized in that: the electric hydraulic lifting device comprises a base (1), wherein vertical plates (2) are slidably arranged on the base (1) and at two ends along the length direction of the base, an electric hydraulic cylinder (3) connected with the vertical plates (2) is fixedly arranged on the base (1), side plates (4) are hinged to the base (1) and at two ends along the width direction of the base, an electric push rod (5) for driving the side plates (4) to rotate is arranged on the base (1), a bottom plate (6) is arranged on the base (1), and when two ends of the two vertical plates (2) are in homogeneous phase joint with the two side plates (4), the bottom plate (6) is in homogeneous phase joint with the cross sections of the two vertical plates (2) and the two side plates (4);
the bottom plate (6), the vertical plate (2) and the side plates (4) are respectively provided with a cooling mechanism (7) acting on the bottom plate, the vertical plate and the side plates.
2. An efficient cooling type straight bathtub forming machine according to claim 1, wherein: the cooling mechanism (7) comprises:
the semiconductor refrigerator comprises a base plate (6), a vertical plate (2) and side plates (4), wherein the base plate, the vertical plate (2) and the side plates (4) are respectively provided with a mounting groove, the conductive plate (701) is fixedly arranged in each mounting groove, a semiconductor refrigerating piece (702) is fixedly arranged on the conductive plate (701), the refrigerating end of the semiconductor refrigerating piece (702) is attached to the conductive plate (701), and the conductive plate (701) is provided with a radiating piece (703) for radiating the semiconductor refrigerating piece (702).
3. An efficient cooling type straight bathtub forming machine according to claim 2, characterized in that: the heat dissipation part (703) comprises a heat dissipation fan (7031) fixedly arranged on the conductive plate (701) and positioned at the outer side of the heating end of the semiconductor refrigeration piece (702), and an air inlet section of the heat dissipation fan (7031) is connected with the heating end of the semiconductor refrigeration piece (702) through a heat dissipation fin (7032).
4. A highly efficient cooling type straight air bathtub forming machine as defined in claim 3, wherein: the conducting plate (701) is internally provided with a snake-shaped hole (8) with a snake-shaped section, two ends of the snake-shaped hole (8) penetrate through the conducting plate (701), and the conducting plate (701) is provided with an air inlet mechanism (9) communicated with one end of the snake-shaped hole (8).
5. An efficient cooling type straight air bathtub forming machine according to claim 4, wherein: the air inlet mechanism (9) comprises a connecting frame (901) fixedly arranged on the conductive plate (701) and communicated with one end of the serpentine hole (8), and a blowing fan (902) is fixedly arranged in the connecting frame (901).
6. An efficient cooling type straight air bathtub forming machine according to claim 5, wherein: and the conducting plate (701) is fixedly provided with a vent pipe (10) communicated with the other end of the serpentine hole (8), and the other end of the vent pipe (10) is communicated with the connecting frame (901).
7. An efficient cooling type straight bathtub forming machine according to claim 1, wherein: the base plate (6) is vertically slidably mounted on the base (1), the two side plates (4) are respectively provided with a linkage piece (11) connected with the base plate (6), and when the side plates (4) rotate on the base (1), the base plate (6) slides on the base (1) through the linkage pieces (11).
8. An efficient cooling type straight air bathtub forming machine according to claim 7, wherein: the linkage piece (11) comprises a hinging rod (1101) hinged on the side plate (4), and the other end of the hinging rod (1101) is hinged with the bottom plate (6).
CN202320431648.9U 2023-03-09 2023-03-09 High-efficient cooling type straight bathtub make-up machine Active CN219600369U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320431648.9U CN219600369U (en) 2023-03-09 2023-03-09 High-efficient cooling type straight bathtub make-up machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320431648.9U CN219600369U (en) 2023-03-09 2023-03-09 High-efficient cooling type straight bathtub make-up machine

Publications (1)

Publication Number Publication Date
CN219600369U true CN219600369U (en) 2023-08-29

Family

ID=87742895

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320431648.9U Active CN219600369U (en) 2023-03-09 2023-03-09 High-efficient cooling type straight bathtub make-up machine

Country Status (1)

Country Link
CN (1) CN219600369U (en)

Similar Documents

Publication Publication Date Title
CN110667063A (en) Injection mold
CN219600369U (en) High-efficient cooling type straight bathtub make-up machine
CN214111431U (en) Adjustable blowing device of high-efficient cavity blowing machine
CN217373356U (en) Injection molding is supplementary cooling assembly for shaping
CN215550849U (en) One-step dry-method forming die for automobile interior trim parts capable of being rapidly cooled
CN214521895U (en) Heat diaphragm method preform forming device
CN113622532A (en) Building insulation board with energy-concerving and environment-protective
CN216540804U (en) Die casting die convenient to demould for aluminum alloy processing
CN213288633U (en) Aluminum profile vertical plate die for furniture
CN215786649U (en) Aluminum product mould stove heat radiation structure
CN217070699U (en) High-efficient water cooling mold structure
CN212860330U (en) High-efficient radiating heat abstractor for injection molding machine
CN219236062U (en) Plastic part injection molding device with good cooling effect
CN220075547U (en) Plastic packaging box production plastic suction mould
CN217968261U (en) Relay mould heat abstractor
CN219055005U (en) Plastic mould with cooling structure
CN218019831U (en) High-efficient radiating rapid prototyping injection mold
CN220946552U (en) Draw-bar box forming device
CN218803691U (en) Injection mold with cooling control device
CN212123941U (en) Die assembly is used in processing of silicon rubber goods
CN215849327U (en) Molding module for experimental analyzer based on efficient molding process
CN212144231U (en) Garbage compression box section bar processing equipment with cooling device
CN219445931U (en) Plastic ornament injection mold convenient to inside clearance
CN210525770U (en) Cooling demoulding structure of caterpillar track type rubber plate mould
CN215825891U (en) Easy radiating cosmetic bottle injection mold

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant