CN213353556U - 3D print head cooling device - Google Patents
3D print head cooling device Download PDFInfo
- Publication number
- CN213353556U CN213353556U CN202022143005.3U CN202022143005U CN213353556U CN 213353556 U CN213353556 U CN 213353556U CN 202022143005 U CN202022143005 U CN 202022143005U CN 213353556 U CN213353556 U CN 213353556U
- Authority
- CN
- China
- Prior art keywords
- cooling
- liquid
- liquid inlet
- lifting
- liquid recovery
- 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
Links
Images
Abstract
The utility model discloses a 3D printer nozzle cooling device, which belongs to the technical field of 3D printing and comprises a 3D printer nozzle, a cooling component, a liquid recovery box, a water tank and a liquid inlet box, wherein the cooling component is rectangular, the 3D printer nozzle is arranged in the cooling component, the 3D printer nozzle is used for printing an object, the liquid recovery box is arranged below the cooling component, the water tank is arranged at one side of the liquid recovery box, the liquid inlet box is arranged at one side of the cooling component, and the cooled liquid can be recycled through the matching between the liquid recovery box and the water tank, thereby saving the cost, and the 3D printer nozzle can be effectively cooled through the matching among the components, the working efficiency of the 3D printer nozzle is improved, and the 3D printer nozzle can not be influenced in the cooling process, make 3D print head can not receive the influence at the precision of printing.
Description
Technical Field
The utility model belongs to the technical field of the 3D printing technique and specifically relates to a 3D print head cooling device is related to.
Background
The 3D printing technology is present in the middle of the 90 s of the 20 th century, and is actually the latest rapid prototyping device using technologies such as photocuring and paper lamination, which is basically the same as the general printing working principle, and the printer is filled with printing materials such as liquid or powder, and after being connected with a computer, the printing materials are stacked layer by layer under the control of the computer, and finally, the blueprint on the computer is changed into a real object, and most 3D printing types need to be subjected to hot melt forming, so that the demand for a nozzle cooling device for a 3D printer is increasing.
At present, most of 3D printer's shower nozzle cooling device on the market is the air cooling device, and traditional air cooling device is that external fan meets the trachea and bloies the shower nozzle, and this kind sets up cooling effect not good, and just wind can influence the precision that 3D printed like this.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a 3D print head cooling device to solve the technical problem who exists among the prior art.
The utility model provides an including 3D print head, cooling part, liquid recovery case, water tank and income liquid case, cooling part is the rectangle, 3D print head sets up in cooling part, liquid recovery case sets up the below at cooling part, cooling part is connected with liquid recovery case through the support column, the water tank sets up the one side at liquid recovery case, the water tank passes through the pipeline and is connected with liquid recovery case, it sets up the one side at cooling part to go into the liquid case, it is connected with cooling part through the pipeline to go into the liquid case.
Further, the cooling part includes cooler bin and cooler, the cooler bin is the rectangle, four recesses have been seted up on the cooler bin inner wall, the cooler is provided with two, two the cooler symmetry sets up in the inside of cooler bin, two the cooler all includes riser, lead screw slip table, cooling plate and cooling shower nozzle, the riser is provided with two, two the riser symmetry sets up in the recess of cooler bin, the lead screw slip table sets up on the riser, the cooling plate sets up on the removal of lead screw slip table is served, cooling shower nozzle sets up on the cooling plate.
Further, the lifter comprises a lifting screw rod, a lifting motor, a lifting plate, a lifting base and an auxiliary lifting rod, wherein the lifting screw rod is arranged in the groove, the lifting motor is arranged at one end of the lifting screw rod, the lifting screw rod is fixedly connected with the lifting motor, the lifting plate is arranged on the lifting screw rod, the lifting base is arranged at the other end of the lifting screw rod, the lifting screw rod penetrates through the lifting plate, the auxiliary lifting rod is provided with two lifting rods, the two lifting rods penetrate through the lifting plate and the two lifting rods, and the auxiliary lifting rods are respectively located on one side of the lifting screw rod.
Further, the liquid recovery case is the rectangle, the liquid recovery case sets up the below at cooling part, the inside a plurality of liquid cooling board that is equipped with of liquid recovery case, a plurality of the liquid cooling board sets up in the liquid recovery case, the liquid cooling board is used for cooling the liquid in the liquid recovery case, liquid recovery case top is equipped with the liquid recovery pipe, the one end of liquid recovery pipe is linked together with cooling part's below, the other end and the liquid recovery case of liquid recovery pipe communicate with each other, the inside liquid recovery valve that is equipped with of liquid recovery pipe.
Further, the water tank is the rectangle, water tank one side is provided with the feed liquor pipe, the one end and the liquid recovery case of feed liquor pipe are connected, the other end and the water tank of feed liquor pipe are connected, be provided with the feed liquor valve on the feed liquor pipe, the water tank top is provided with the drain pipe, be provided with the drain valve on the drain pipe, the one end and the income liquid case of drain pipe are linked together, the other end and the water tank of drain pipe are linked together, the income liquid mouth has been seted up to the water tank top.
Further, go into the liquid case and include fixing base and income liquid case body, the fixing base is the L type, the fixing base sets up the below at cooling unit, fixing base and cooling unit fixed connection, it sets up on the fixing base to go into the liquid case body, this internal liquid storehouse, cooling bin and the baffle of putting into of income liquid case, the baffle is located between income liquid storehouse and the cooling bin, it is provided with the inlet tube to go into the liquid storehouse top, inlet tube one end is connected with income liquid storehouse, the other end of inlet tube passes the cooling box and is connected with the cooling plate, be equipped with the liquid valve on the inlet tube, the cooling bin top is provided with the cooling tube, cooling tube one end is connected with the cooling bin, the other end of cooling tube passes the cooling box and is connected with the cooling plate, be equipped with the cooling valve on the cooling tube.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the one of which, through the cooperation of riser and lead screw slip table can very effectually cool off 3D print head, lifter plate on the riser can make the lead screw slip table reciprocate, makes cooling shower nozzle can cool off each position of 3D print head, lead screw slip table makes cooling shower nozzle remove about, can carry out the omnidirectional cooling to 3D print head, when cooling off the 3D printer, need not contact 3D print head to can not influence 3D print head's precision.
Secondly, through the cooperation between liquid recovery case and the water tank, can carry out cyclic utilization to the liquid that has cooled down, practiced thrift the cost, also provide refrigerated efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a first angle structure of the present invention;
FIG. 2 is a cross-sectional view of the cooling member of the present invention;
FIG. 3 is a cross-sectional view of the liquid recovery tank of the present invention;
fig. 4 is a schematic structural view of a second angle of the present invention;
fig. 5 is a schematic structural view of a third angle of the present invention;
fig. 6 is a cross-sectional view of the liquid inlet tank of the present invention.
Reference numerals:
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.
The components of the embodiments of the present invention, as 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 present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 6, an embodiment of the present invention provides a 3D printer head cooling device, including a 3D printer head 1, a cooling component 2, a liquid recycling tank 3, a water tank 4 and a liquid inlet tank 5, where the cooling component 2 is rectangular, the 3D printer head 1 is disposed in the cooling component 2, the cooling component 2 is used to cool the 3D printer head 1, the 3D printer head 1 is used to print an object, the liquid recycling tank 3 is disposed below the cooling component 2, the cooling component 2 is connected to the liquid recycling tank 3 through a support column, the liquid recycling tank 3 is used to recycle liquid cooled by the cooling component 2 to the 3D printer head 1, the water tank 4 is disposed on one side of the liquid recycling tank 3, the water tank 4 is connected to the liquid recycling tank 3 through a pipeline, the water tank 4 is used for placing required liquid when cooling, the liquid inlet box 5 is arranged on one side of the cooling part 2, the liquid inlet box 5 is connected with the cooling part 2 through a pipeline, the liquid inlet box 5 is used for storing liquid for cooling the 3D printer nozzle 1, the cooled liquid can be recycled through the matching between the liquid recovery box 3 and the water tank 4, the cost is saved, the 3D printer nozzle 1 can be effectively cooled through the matching between the parts, the working efficiency of the 3D printer nozzle 1 is improved, the 3D printer nozzle 1 cannot be influenced in the cooling process, and the 3D printer nozzle 1 cannot be influenced in the printing precision.
Specifically, the cooling part 2 includes a cooling box 21 and a cooler 22, the cooling box 21 is rectangular, four grooves 211 are formed in the inner wall of the cooling box 21, two coolers 22 are symmetrically arranged in the cooling box 21, two coolers 22 include a lifter 221, a screw rod sliding table 23, a cooling plate 24 and a cooling spray head 25, two lifters 221 are arranged in two symmetrical lifters 221 arranged in the grooves 211 of the cooling box 21, the lifter 221 is used for moving the cooling head spray head 25 up and down, the screw rod sliding table 23 is arranged on the lifter 221, the screw rod sliding table 23 is used for moving the cooling head spray head 25 left and right, the cooling plate 24 is arranged at the moving end of the screw rod sliding table 23, the cooling plate 24 is used for temporarily storing liquid during cooling, the cooling spray head 25 is arranged on the cooling plate 24, cooling shower nozzle 25 is used for cooling off for 3D print head 1, through cooperation between riser 221 and the lead screw slip table 23 can more effectually advance the cooling to 3D print head 1, makes the efficiency of 3D print head 1 work improve, through the cooperation between above-mentioned each part, cooler 22 does not touch 3D print head 1 when cooling 3D print head 1, can solve the cooling not good and when cooling 3D print head 1, makes the problem that 1 precision of 3D print head can reduce.
Specifically, the lifter 221 includes a lifting screw 222, a lifting motor 223, a lifting plate 224, a lifting base 225 and an auxiliary lifting rod 226, the lifting screw 222 is disposed in the groove 211, the lifting motor 223 is disposed at one end of the lifting screw 222, the lifting screw 222 is fixedly connected to the lifting motor 223, the lifting plate 224 is disposed on the lifting screw 222, the lifting base 225 is disposed at the other end of the lifting screw 222, the lifting screw 222 penetrates through the lifting plate 224, the auxiliary lifting rod 226 is provided with two, the two auxiliary lifting rods 226 penetrate through the lifting plate 224, the two auxiliary lifting rods 226 are respectively located at one side of the lifting screw 222, and through cooperation between the above components, the cooling nozzle 25 can be moved up and down, so as to better cool the 3D printer nozzle 1.
Specifically, the liquid recovery tank 3 is rectangular, the liquid recovery tank 3 is arranged below the cooling part 2, the liquid recovery tank 3 is used for placing the liquid cooled by the cooling component 2, a plurality of liquid cooling plates 30 are arranged inside the liquid recovery tank 3, a plurality of liquid cooling plates 30 are arranged in the liquid recovery tank 3, the liquid cooling plate 30 is used for cooling the liquid in the liquid recovery tank 3, a liquid recovery pipe 31 is arranged above the liquid recovery tank 3, one end of the liquid recovery pipe 31 is communicated with the lower part of the cooling part 2, the other end of the liquid recovery pipe 31 is communicated with the liquid recovery tank 3, the liquid recovery pipe 31 is used for making the liquid in the cooling tank 21 enter the liquid recovery tank 3, the liquid recovery pipe 31 is internally provided with a liquid recovery valve 311, by the cooperation of the above components, the liquid cooled by the cooling member 2 can be efficiently recovered.
Specifically, the water tank 4 is a rectangle, the water tank 4 is used for placing cooling liquid, a liquid inlet pipe 41 is arranged on one side of the water tank 4, one end of the liquid inlet pipe 41 is connected with the liquid recovery box 3, the other end of the liquid inlet pipe 41 is connected with the water tank 4, the liquid inlet pipe 41 is used for enabling liquid in the liquid recovery box 3 to enter the water tank 4, a liquid inlet valve 411 is arranged on the liquid inlet pipe 41, a liquid outlet pipe 42 is arranged above the water tank 4, one end of the liquid outlet pipe 42 is communicated with the liquid inlet box 5, the other end of the liquid outlet pipe 42 is communicated with the water tank 4, the liquid outlet pipe 42 is used for enabling liquid in the water tank 4 to enter the liquid inlet box 5, a liquid outlet valve 421 is arranged on the liquid outlet pipe 42, and a liquid inlet 43 is formed above the water tank 4.
Specifically, the liquid inlet box 5 includes a fixed seat 51 and a liquid inlet box body 52, the fixed seat 51 is L-shaped, the fixed seat 51 is disposed below the cooling component 2, the fixed seat 51 is fixedly connected with the cooling component 2, the liquid inlet box body 52 is disposed on the fixed seat 51, a liquid inlet bin 521, a cooling bin 522 and a baffle 53 are disposed in the liquid inlet box body 52, the baffle 53 is located between the liquid inlet bin 521 and the cooling bin 522, a liquid inlet pipe 5211 is disposed above the liquid inlet bin 521, one end of the liquid inlet pipe 5211 is connected with the liquid inlet bin 521, the other end of the liquid inlet pipe 5211 passes through the cooling box 21 and is connected with the cooling plate 24, a liquid inlet valve 5212 is disposed on the liquid inlet pipe 5211, a cooling pipe 5221 is disposed above the cooling bin 522, one end of the cooling pipe 5221 is connected with the cooling bin 522, and the other end of the cooling pipe 5221 passes through the cooling box 21 and is connected with the cooling plate 24, the cooling pipe 5221 is provided with a cooling valve 5222, and the printer head can be cooled more effectively by the cooperation of the above components.
A3D print head cooling device operation description:
when the 3D printer head 1 needs to be cooled, the liquid outlet valve 421 is opened to allow the liquid in the water tank 4 to enter the liquid inlet bin 521, and then the liquid inlet valve 5212 and the cooling valve 5222 are opened simultaneously to allow the liquid in the liquid inlet bin 521 and the cooling bin 522 to enter the cooling plate 24 through the liquid inlet pipe 5211 and the cooling pipe 5221, and then the lifter 221 and the screw rod sliding table 23 move up and down and left and right to allow all parts of the 3D printer head 1 to be sufficiently cooled, after the cooling is completed, the liquid recovery valve 311 is opened, and after the liquid enters the liquid recovery tank 3 through the liquid recovery pipe 31, the liquid inlet valve 411 is opened to allow the liquid in the liquid recovery tank 3 to enter the water tank 4 so as to be recycled.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a 3D print head cooling device, its characterized in that, includes 3D print head (1), cooling part (2), liquid recovery case (3), water tank (4) and income liquid case (5), cooling part (2) are the rectangle, 3D print head (1) sets up in cooling part (2), liquid recovery case (3) set up the below at cooling part (2), cooling part (2) are connected with liquid recovery case (3) through the support column, water tank (4) set up the one side at liquid recovery case (3), water tank (4) are connected with liquid recovery case (3) through the pipeline, it sets up the one side at cooling part (2) to go into liquid case (5), it is connected with cooling part (2) through the pipeline to go into liquid case (5).
2. The 3D printer nozzle cooling device according to claim 1, wherein the cooling part (2) comprises a cooling box (21) and two coolers (22), the cooling box (21) is rectangular, four grooves (211) are formed in the inner wall of the cooling box (21), the two coolers (22) are arranged, the two coolers (22) are symmetrically arranged in the cooling box (21), the two coolers (22) comprise a lifter (221), a screw rod sliding table (23), a cooling plate (24) and a cooling nozzle (25), the lifter (221) is arranged in two, the two lifters (221) are symmetrically arranged in the grooves (211) of the cooling box (21), the screw rod sliding table (23) is arranged on the lifter (221), the cooling plate (24) is arranged at the moving end of the screw rod sliding table (23), the cooling spray head (25) is arranged on the cooling plate (24).
3. The 3D printer head cooling device according to claim 2, the lifter (221) comprises a lifting screw rod (222), a lifting motor (223), a lifting plate (224), a lifting base (225) and an auxiliary lifting rod (226), the lifting screw rod (222) is arranged in the groove (211), the lifting motor (223) is arranged at one end of the lifting screw rod (222), the lifting screw rod (222) is fixedly connected with a lifting motor (223), the lifting plate (224) is arranged on the lifting screw rod (222), the lifting base (225) is arranged at the other end of the lifting screw rod (222), the lifting screw rod (222) penetrates through the lifting plate (224), the auxiliary lifting rods (226) are arranged in two numbers, the two auxiliary lifting rods (226) penetrate through the lifting plate (224), and the two auxiliary lifting rods (226) are respectively located on one side of the lifting screw rod (222).
4. The 3D printer nozzle cooling device according to claim 2, wherein the liquid recovery tank (3) is rectangular, the liquid recovery tank (3) is arranged below the cooling component (2), a plurality of liquid cooling plates (30) are arranged inside the liquid recovery tank (3), the plurality of liquid cooling plates (30) are arranged inside the liquid recovery tank (3), a liquid recovery pipe (31) is arranged above the liquid recovery tank (3), one end of the liquid recovery pipe (31) is communicated with the lower part of the cooling component (2), the other end of the liquid recovery pipe (31) is communicated with the liquid recovery tank (3), and a liquid recovery valve (311) is arranged inside the liquid recovery pipe (31).
5. The 3D printer nozzle cooling device according to claim 4, wherein the water tank (4) is rectangular, a liquid inlet pipe (41) is arranged on one side of the water tank (4), one end of the liquid inlet pipe (41) is connected with the liquid recovery tank (3), the other end of the liquid inlet pipe (41) is connected with the water tank (4), a liquid inlet valve (411) is arranged on the liquid inlet pipe (41), a liquid outlet pipe (42) is arranged above the water tank (4), a liquid outlet valve (421) is arranged on the liquid outlet pipe (42), one end of the liquid outlet pipe (42) is communicated with the liquid inlet tank (5), the other end of the liquid outlet pipe (42) is communicated with the water tank (4), and a liquid inlet (43) is formed above the water tank (4).
6. The 3D printer nozzle cooling device according to claim 4, wherein the liquid inlet tank (5) comprises a fixed seat (51) and a liquid inlet tank body (52), the fixed seat (51) is L-shaped, the fixed seat (51) is arranged below the cooling component (2), the fixed seat (51) is fixedly connected with the cooling component (2), the liquid inlet tank body (52) is arranged on the fixed seat (51), a liquid inlet bin (521), a cooling bin (522) and a baffle plate (53) are arranged in the liquid inlet tank body (52), the baffle plate (53) is positioned between the liquid inlet bin (521) and the cooling bin (522), a liquid inlet pipe (5211) is arranged above the liquid inlet bin (521), one end of the liquid inlet pipe (5211) is connected with the liquid inlet bin (521), and the other end of the liquid inlet pipe (5211) passes through the cooling tank (21) to be connected with the cooling plate (24), be equipped with into liquid valve (5212) on liquid inlet pipe (5211), cooling storehouse (522) top is provided with cooling tube (5221), cooling tube (5221) one end is connected with cooling storehouse (522), the other end of cooling tube (5221) passes cooling box (21) and is connected with cooling plate (24), be equipped with cooling valve (5222) on cooling tube (5221).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022143005.3U CN213353556U (en) | 2020-09-25 | 2020-09-25 | 3D print head cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022143005.3U CN213353556U (en) | 2020-09-25 | 2020-09-25 | 3D print head cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213353556U true CN213353556U (en) | 2021-06-04 |
Family
ID=76155684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022143005.3U Active CN213353556U (en) | 2020-09-25 | 2020-09-25 | 3D print head cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213353556U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113400514A (en) * | 2021-07-03 | 2021-09-17 | 江苏绿能塑木科技有限公司 | Energy-saving plastic-wood particle extrusion sufficient cooling equipment and process |
-
2020
- 2020-09-25 CN CN202022143005.3U patent/CN213353556U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113400514A (en) * | 2021-07-03 | 2021-09-17 | 江苏绿能塑木科技有限公司 | Energy-saving plastic-wood particle extrusion sufficient cooling equipment and process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213353556U (en) | 3D print head cooling device | |
| CN205816736U (en) | A kind of mould of cast gear box upper box | |
| CN211279700U (en) | Setting device is used in template production is moulded to wood | |
| CN206446129U (en) | A kind of 3D printer printing head of quick heat radiating | |
| CN207823952U (en) | A kind of powder metallurgy diel | |
| CN213766943U (en) | Mold core cooling mechanism | |
| CN207549714U (en) | A kind of skin cream production printing and fixing device | |
| CN112793095A (en) | Injection mold convenient to drawing of patterns | |
| CN211843043U (en) | Injection mold convenient to drawing of patterns | |
| CN213530721U (en) | 3D prints die casting die convenient to dismouting combination | |
| CN204898108U (en) | Special aluminium strip anodic oxidation of license plate oxidation groove for line | |
| CN207695601U (en) | A kind of mold for auto parts cooling | |
| CN210026680U (en) | UV printing ink heating device | |
| CN210359195U (en) | Die-casting die for long handle sleeve | |
| CN210940121U (en) | Flame-retardant high-low temperature-resistant sealing element forming device | |
| CN211588435U (en) | Penetrate wax mould suitable for swirler | |
| CN209914379U (en) | Liquid cooling server cabinet | |
| CN210208597U (en) | Die casting die with quick cooling panel | |
| CN106378416B (en) | A kind of the core mold structure and release method of large complicated shape | |
| CN207756901U (en) | A kind of cooling device for automobile casting | |
| CN204815727U (en) | Soda ash cast iron tower improves structure | |
| CN215697987U (en) | Knurling aluminum plate injection moulding device | |
| CN206266420U (en) | A kind of new blow head suitable for shoulder Cheng Mo wide | |
| CN212266991U (en) | Energy-saving printing machine refrigeration plant | |
| CN204506099U (en) | Monolithic many spellings printing screen plate tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |