CN218658822U - A dismantle anchor clamps for hot runner chews head - Google Patents

A dismantle anchor clamps for hot runner chews head Download PDF

Info

Publication number
CN218658822U
CN218658822U CN202222763677.3U CN202222763677U CN218658822U CN 218658822 U CN218658822 U CN 218658822U CN 202222763677 U CN202222763677 U CN 202222763677U CN 218658822 U CN218658822 U CN 218658822U
Authority
CN
China
Prior art keywords
sleeve
hot runner
end part
head
runner nozzle
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
CN202222763677.3U
Other languages
Chinese (zh)
Inventor
韩昇烨
谢永权
易世根
康仁植
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.)
Guangdong Yudo Hot Runner System Co ltd
Original Assignee
Guangdong Yudo Hot Runner System 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 Guangdong Yudo Hot Runner System Co ltd filed Critical Guangdong Yudo Hot Runner System Co ltd
Priority to CN202222763677.3U priority Critical patent/CN218658822U/en
Application granted granted Critical
Publication of CN218658822U publication Critical patent/CN218658822U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The application discloses a dismantle anchor clamps that is used for hot runner to chew head relates to dismantlement anchor clamps technical field to solve and to damage the hot runner easily when chewing the head and chew the head even can't chew the head with the hot runner and chew the problem that the body was torn out smoothly from the heat to the hot runner when dismantling now. It includes: the sleeve is provided with a first end part and a second end part which are opposite, the diameter of the sleeve is gradually increased along the direction from the first end part to the second end part, a plurality of equally-divided notches are uniformly formed in the periphery of the first end part, the equally-divided notches extend along the axial direction, and the first end part is used for sleeving a hot runner nozzle head; the fixed cover, the fixed cover has relative third tip and fourth tip, follows the third tip to in the direction of fourth tip the diameter of fixed cover increases gradually, the inner wall of fixed cover along axial gradient with telescopic outer wall along axial gradient equals.

Description

A dismantle anchor clamps for hot runner chews head
Technical Field
The application relates to the technical field of disassembly fixtures, in particular to a disassembly fixture for a hot runner nozzle head.
Background
At present, all moulds all use hot runner system, the hot runner system goes wrong easily in the use, so often need to maintain hot runner system, the hot runner mouth head all needs to be dismantled in the maintenance, and the hot runner mouth head is generally locked in the hot mouth body for a long time through pressing the cap, as shown in figure 1, hot runner mouth head 1 is because for a long time in high temperature high pressure environment, the one end that has caused the hot runner to chew the head near the hot mouth body is easy to be out of shape because of the atress inequality in the dismantlement process, thereby damage hot runner mouth head, even can't chew the hot runner mouth head from hot mouth body internal smooth disassembly, for example, current generally adopts vice to dismantle it by force when chewing the hot runner head, because vice only has two endpoints, directly destroy the shape that the head is chewed to the hot runner easily, thereby make hot runner mouth head warp and can't carry out normal work, even can't break away from the hot mouth body, this kind of dismantlement mode has increased the use cost of hot runner mouth head, and the maintenance cycle is long.
Therefore, the prior art is still to be improved.
SUMMERY OF THE UTILITY MODEL
To prior art's not enough, this application provides a dismantlement anchor clamps that is used for hot runner to chew head to solve and to damage the hot runner easily when the head is dismantled to the hot runner and chew the head and even can't chew the head with the hot runner and chew the problem that the body was torn out smoothly from the heat.
In order to solve the above technical problem, an embodiment of the present application provides a disassembly jig for a hot runner nozzle head, including:
the sleeve is provided with a first end part and a second end part which are opposite, the diameter of the sleeve is gradually increased along the direction from the first end part to the second end part, a plurality of equally-divided notches are uniformly formed in the periphery of the first end part, the equally-divided notches extend along the axial direction, and the first end part is used for sleeving a hot runner nozzle head;
the fixing sleeve is provided with a third end and a fourth end which are opposite, the diameter of the fixing sleeve is gradually increased along the direction from the third end to the fourth end, and the inclination of the inner wall of the fixing sleeve along the axial direction is equal to that of the outer wall of the sleeve along the axial direction; when the sleeve locks the hot runner nozzle head, the third end of the fixed sleeve is sleeved on the first end.
In one implementation, the first end portion has an anti-slip groove formed on an inner wall thereof.
In one implementation mode, a first screw hole is formed in the sleeve, the disassembling clamp further comprises a fixing screw, and the fixing screw corresponds to the first screw hole and is used for fixing a hot runner nozzle head located in the sleeve.
In one implementation, the sleeve is a spring steel sleeve.
In one implementation, a first external thread is provided on an outer wall of the first end portion, and an internal thread corresponding to the first external thread is provided on the third end portion.
In one implementation, the disassembly fixture further includes a catch disposed on the second end.
In one implementation mode, the second end portion is provided with a second screw hole, the disassembling fixture further comprises a thermal isolation rod, one end of the thermal isolation rod is arranged on the second screw hole, and the other end of the thermal isolation rod is connected with the stop handle.
In one implementation, the disassembling jig further comprises a pulling member, and the pulling member is slidably sleeved on the thermal isolation rod and located between the sleeve and the retaining handle.
Has the beneficial effects that: the hot runner nozzle is characterized in that a sleeve is sleeved on a sleeve in a loose manner in advance, then the sleeve is sleeved on the hot runner nozzle, the fixed sleeve on the sleeve moves from the second end part of the sleeve to the first end part, so that the equant notch of the first end part is tightened to the direction close to the hot runner nozzle, when the third end part of the fixed sleeve is sleeved on the first end part of the sleeve, the equant notch of the sleeve clamps the hot runner nozzle to fix the hot runner nozzle in the sleeve, then the sleeve is pulled towards the end, far away from the hot nozzle, of the hot runner nozzle, so that the sleeve drives the end, far away from the hot nozzle, of the hot runner nozzle to move and is separated from the hot runner nozzle, the equant notch of the sleeve evenly surrounds the hot runner nozzle, the sleeve drives the hot runner nozzle to move towards the end, the hot runner nozzle is stressed evenly and cannot deform, and the hot runner nozzle is loosened by pulling of the sleeve, and the integrity of the hot runner nozzle after the hot runner nozzle is detached is ensured; and because of the diameter of the sleeve increases gradually in the direction from the first end to the second end, the sleeve drives the hot runner to chew the head and move away from the hot runner and chew the one end of the body, and can automatically separate from the hot runner and chew the head, thereby facilitating the disassembly of the hot runner and chewing the head.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without any inventive work.
Fig. 1 is a schematic view of the structure of a hot runner nozzle tip in a hot nozzle body in the prior art.
Fig. 2 is a schematic structural view from one perspective of a disassembly fixture for a hot runner nozzle tip provided in the present application.
Fig. 3 is a schematic structural view from another perspective of a disassembly fixture for a hot runner nozzle tip as provided herein.
Fig. 4 is an exploded view of a disassembly fixture for a hot runner nozzle tip as provided herein.
Fig. 5 is a schematic structural diagram of a stopper, a thermal isolation rod and a pull-out connection in a disassembling fixture for a hot runner nozzle provided by the present application.
In the figure: 1. a hot runner nozzle head; 2. a hot nozzle body; 3. a sleeve; 31. an anti-slip groove; 32. a first screw hole; 33. a second screw hole; 4. fixing a sleeve; 5. equally dividing the incision; 6. fixing screws; 7. a gear handle; 8. a thermal isolation rod; 9. and (5) pulling the piece.
Detailed Description
The application provides a dismantlement anchor clamps for hot runner is chewed first, for making the purpose, technical scheme and effect of this application clearer, clear and definite, the following refers to the attached drawing and further explains this application in detail by way of example. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The following further describes the content of the application by describing the embodiments with reference to the attached drawings.
Referring to fig. 2, 3 and 4, the present embodiment provides a disassembling jig for a hot runner nozzle head, the disassembling jig is disposed on a hot runner nozzle head 1, and the hot runner nozzle head 1 is disposed in a hot nozzle body 2, the disassembling jig is configured to disassemble the hot runner nozzle head 1, the disassembling jig includes a sleeve 3 and a fixing sleeve 4, the sleeve 3 is made of a spring steel material, the sleeve 3 has a first end portion and a second end portion which are opposite to each other, and the diameter of the sleeve gradually increases in a direction from the first end portion to the second end portion, it is understood that the first end portion is the end portion with the smallest diameter of the sleeve 3, a plurality of equally-divided notches 5 are uniformly formed on the periphery of the first end portion, and extend along an axial direction, the first end portion is configured to sleeve the nozzle head, it is understood that the equally-divided notches 5 have a certain gap, the sleeve 3 made of the spring steel material has a certain expansion capability of the equally-divided notches 5, the fixing sleeve 4 has a third end portion and a fourth end portion which are opposite to each other, and the diameter of the sleeve 3 gradually increases in a direction from the third end portion to the fourth end portion, and the inner wall of the fixing sleeve 4 has an equal inclination, and the inclination of the diameter of the fixing sleeve 4 is the axial direction of the sleeve 4; in order to disassemble the hot runner nozzle head 1, in this embodiment, the fixing sleeve 4 is loosely sleeved on the sleeve 3 in advance, then the sleeve 3 is sleeved on the hot runner nozzle head 1, the fixing sleeve 4 on the sleeve 3 is moved from the second end part of the sleeve 3 to the first end part, so that the equant notch 5 of the first end part is tightened in the direction close to the hot runner nozzle head 1, when the third end part of the fixing sleeve 4 is sleeved on the first end part of the sleeve 3, the equant notch 5 of the sleeve 3 clamps the hot runner nozzle head 1 to fix the hot runner nozzle head 1 in the sleeve 3, then the sleeve 3 is pulled towards the end of the hot runner nozzle head 1 far away from the hot nozzle body 2, so that the sleeve 3 drives the end of the hot runner nozzle head 1 far away from the hot nozzle body 2 to move and then is separated from the hot runner nozzle head 1, because the equant notch 5 of the sleeve 3 uniformly surrounds the hot runner nozzle head 1, so that the sleeve 3 drives the hot runner head 1 to move towards the end far away from the hot nozzle body 2, the sleeve 3 is uniformly stressed and does not deform, and the integrity of the hot runner nozzle head 1 is ensured after the hot runner nozzle head 1 is disassembled; and because of sleeve 3 along first end to the second end orientation telescopic diameter crescent setting for sleeve 3 drives hot runner to chew the first 1 and keep away from the hot one end of chewing body 2 and remove the back, can break away from hot runner and chew first 1 automatically, thereby conveniently chew the dismantlement of first 1 to the hot runner.
Referring to fig. 2 and 4, in an embodiment, an anti-slip groove 31 is formed in an inner wall of the first end, and by providing the anti-slip groove 31 in this embodiment, an encircling force of the equally-divided notch 5 of the sleeve 3 to evenly encircle the hot runner nozzle head 1 can be improved, so that the sleeve 3 can better fix the hot runner nozzle head 1.
Further, referring to fig. 2, in an embodiment, a first screw hole 32 is formed in the sleeve 3, the disassembling jig further includes a fixing screw 6, the fixing screw 6 is disposed corresponding to the first screw hole 32, when the sleeve 3 surrounds and fixes the hot runner nozzle head 1 through the equally dividing notch 5, in order to further fix the hot runner nozzle head 1 located in the sleeve 3, the screw thread of the fixing screw 6 passes through the first screw hole 32 and moves toward the direction close to the hot runner nozzle head 1 until the fixing screw 6 further fixes the hot runner nozzle head 1 in the sleeve 3.
Referring to fig. 2, in an embodiment, the fixing sleeve 4 is a nut, and the connection between the sleeve 3 and the fixing sleeve 4 is as follows: by providing a first external thread (not shown in the figures) on the outer wall of the first end of the sleeve 3 and an internal thread (not shown in the figures) corresponding to said first external thread on the third end of said cover 4, said cover 4 is connected to the first external thread of the sleeve 3 by means of an internal thread.
Referring to fig. 2, in an embodiment, the disassembling jig further includes a stopper 7, the stopper 7 is disposed on the second end, the stopper 7 may be a rectangular body, and the length of the stopper 7 is greater than the diameter of the sleeve 3; keep off 7 still can be the cylinder, keep off the diameter that 7 is greater than sleeve 3 this moment, because the drum is more smooth, this embodiment is greater than sleeve 3 through setting up the size keep off 7 set up in sleeve 3 keep away from the hot runner and chew the one end of first 1, keep off 7 and sleeve 3 formation stop portion, lean on stop portion through external device and draw, can more conveniently draw sleeve 3 to chew first 1 with the hot runner and pull out not hard up the mode and take out hot runner and chew first 1.
Referring to fig. 2, in an embodiment, the second end portion is provided with a second screw hole 33, the disassembling jig further includes a thermal isolation rod 8, one end of the thermal isolation rod 8 is threaded on the second screw hole 33, and the other end is connected to the retaining handle 7; because this embodiment need often go on to the dismantlement of chewing first 1 to the hot runner, in order to save time, can't accomplish completely wait hot runner to chew first 1 cooling and operate again, chew first 1 back when sleeve 3 contact hot runner like this, can receive the heat that first 1 was chewed to a part hot runner, this embodiment is through setting up hot isolating rod 8, can conduct the heat that keeps off 7 through insulating sleeve 3, thereby need not with the help of external device, through the mode of hand to drawing sleeve 3 on keeping off 7, just can drive hot runner on the sleeve 3 and chew first 1 and pull out not hard up, simple and convenient and pull power way better control.
Referring to fig. 2, in an embodiment, the disassembling jig further includes a pulling element 9, the pulling element 9 is slidably sleeved on the thermal isolating rod 8 and located between the sleeve 3 and the handle 7, it can be understood that the size of the pulling element 9 is smaller than that of the handle 7, so that the handle 7 can limit the pulling element 9 at an end of the thermal isolating rod 8 close to the handle 7, of course, the size of the pulling element 9 can also be smaller than that of the sleeve 3 at the same time, or a stop element is disposed at an end of the thermal isolating rod close to the sleeve 3, so that the pulling element 9 is slidably sleeved on the thermal isolating rod 8, it is worth mentioning that the thermal isolating rod 8 is in threaded connection with the sleeve 3 through a second screw hole 33, so that when the hot runner nozzle 1 is not required to be disassembled, the thermal isolating rod 8 is directly screwed until the thermal isolating rod 8 is separated from the sleeve 3, compared with the thermal isolating rod 8 being directly fixed on the sleeve 3, the threaded connection of the thermal isolating rod 8 with the sleeve 3 is convenient to disassemble and occupy a small space, and at the same time, the pulling element 9 can be directly taken out from one end of the thermal isolating rod 8 for convenient to disassemble the sleeve 3; this embodiment draws piece 9 through the setting, through drawing 9 on thermal insulating rod 8 toward the one end of keeping away from sleeve 3 and slide, keep off 7 until the collision, compare in directly hard pulling sleeve 3, keep off 7 through drawing 9 toward the direction collision of keeping away from sleeve 3 to drive thermal insulating rod 8, sleeve 3 and hot runner mouth head 1's removal, it has utilized inertial force, has saved the output of power greatly.
Finally, the present embodiment provides a disassembly jig for a hot runner nozzle head, the disassembly jig includes a sleeve 3 and a fixing sleeve 4, the sleeve 3 is made of a spring steel material, the sleeve 3 has a first end portion and a second end portion which are opposite to each other, and a diameter of the sleeve is gradually increased along a direction from the first end portion to the second end portion, it can be understood that the first end portion is an end portion with a smallest diameter of the sleeve 3, a plurality of equally divided cuts 5 are uniformly formed on a periphery of the first end portion, the plurality of equally divided cuts extend along an axial direction, the first end portion is used for sleeving the nozzle head, it can be understood that the equally divided cuts 5 have a certain gap, the sleeve 3 made of the spring steel material has a certain expansion capability of the equally divided cuts 5, the fixing sleeve 4 has a third end portion and a fourth end portion which are opposite to each other, a diameter of the fixing sleeve 4 is gradually increased along a direction from the third end portion to the fourth end portion, the third end portion is an end portion with a smallest diameter of the fixing sleeve 4, and an inclination of an inner wall of the fixing sleeve along the axial direction is equal to an inclination of an outer wall of the sleeve along the axial direction; in order to disassemble the hot runner nozzle head 1, in this embodiment, the fixing sleeve 4 is loosely sleeved on the sleeve 3 in advance, then the sleeve 3 is sleeved on the hot runner nozzle head 1, the fixing sleeve 4 on the sleeve 3 is moved from the second end part of the sleeve 3 to the first end part, so that the equant notch 5 of the first end part is tightened in the direction close to the hot runner nozzle head 1, when the third end part of the fixing sleeve 4 is sleeved on the first end part of the sleeve 3, the equant notch 5 of the sleeve 3 clamps the hot runner nozzle head 1 to fix the hot runner nozzle head 1 in the sleeve 3, then the sleeve 3 is pulled towards one end of the hot runner nozzle head 1 far away from the hot nozzle body 2, so that the sleeve 3 drives one end of the hot runner nozzle head 1 far away from the hot nozzle body 2 to move and is separated from the hot runner nozzle head 1, because the equant notch 5 of the sleeve 3 uniformly surrounds the hot runner nozzle head 1, so that the sleeve 3 drives the hot runner head 1 to move towards one end far away from the hot nozzle body 2, the uniform stress is not deformed, and the integrity of the hot runner nozzle head 1 is ensured by the drawing looseness of the sleeve 3, and the nozzle head 1 is loosened to guarantee the integrity of the hot runner head 1 after the hot runner is taken out; and because of sleeve 3 along first end to the second end orientation telescopic diameter crescent setting for sleeve 3 drives hot runner to chew the first 1 and keep away from the hot one end of chewing body 2 and remove the back, can break away from hot runner and chew first 1 automatically, thereby conveniently chew the dismantlement of first 1 to the hot runner.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (8)

1. A dismantlement anchor clamps that is used for hot runner to chew head, its characterized in that, it includes:
the sleeve is provided with a first end part and a second end part which are opposite, the diameter of the sleeve is gradually increased along the direction from the first end part to the second end part, a plurality of equally-divided notches are uniformly formed in the periphery of the first end part, the equally-divided notches extend along the axial direction, and the first end part is used for sleeving a hot runner nozzle head;
the fixing sleeve is provided with a third end and a fourth end which are opposite, the diameter of the fixing sleeve is gradually increased along the direction from the third end to the fourth end, and the inclination of the inner wall of the fixing sleeve along the axial direction is equal to that of the outer wall of the sleeve along the axial direction; when the sleeve locks the hot runner nozzle head, the third end of the fixed sleeve is sleeved on the first end.
2. The removable fixture for a hot runner nozzle according to claim 1, wherein the inner wall of the first end portion is provided with an anti-slip groove.
3. The disassembly fixture for the hot runner nozzle of claim 1, wherein the sleeve is provided with a first screw hole, the disassembly fixture further comprises a fixing screw, and the fixing screw is arranged corresponding to the first screw hole and used for fixing the hot runner nozzle in the sleeve.
4. A disassembly jig for a hot runner nozzle tip as claimed in claim 1 wherein the sleeve is a spring steel sleeve.
5. The hot runner beak removing jig according to claim 1, wherein the outer wall of the first end portion is provided with a first external thread, and the third end portion is provided with an internal thread corresponding to the first external thread.
6. The takedown fixture for hot runner nozzles according to claim 1 further comprising a catch disposed on said second end.
7. The disassembly fixture for a hot runner nozzle according to claim 6, wherein the second end portion is provided with a second screw hole, the disassembly fixture further comprises a thermal isolation rod, one end of the thermal isolation rod is disposed on the second screw hole, and the other end of the thermal isolation rod is connected with the stop handle.
8. The takedown fixture of claim 7 which also includes a puller slidably mounted on said heat isolating rod between said sleeve and said stop.
CN202222763677.3U 2022-10-19 2022-10-19 A dismantle anchor clamps for hot runner chews head Active CN218658822U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222763677.3U CN218658822U (en) 2022-10-19 2022-10-19 A dismantle anchor clamps for hot runner chews head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222763677.3U CN218658822U (en) 2022-10-19 2022-10-19 A dismantle anchor clamps for hot runner chews head

Publications (1)

Publication Number Publication Date
CN218658822U true CN218658822U (en) 2023-03-21

Family

ID=85563938

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222763677.3U Active CN218658822U (en) 2022-10-19 2022-10-19 A dismantle anchor clamps for hot runner chews head

Country Status (1)

Country Link
CN (1) CN218658822U (en)

Similar Documents

Publication Publication Date Title
CN105545900B (en) A kind of extracting tool for expanding steady pin
CN205823842U (en) A kind of dismountable expansion bolt
CN218658822U (en) A dismantle anchor clamps for hot runner chews head
CN201599289U (en) Expansion screw with convenient disassembly
CN202684829U (en) One-way valve dismounting device
CN202517439U (en) Plug screw unscrewing tool
CN206816641U (en) Dismountable expansion bolt
CN103507238B (en) Two-platen injection molding machine clamping mechanism and two-platen injection molding machine
CN103465216B (en) Device for disassembling piston in aircraft engine sheath opening actuator cylinder
CN205438400U (en) Fixtures for Disassembly of Turbine Discs
CN102990607B (en) A kind of safe dismantling device of circlip for shaft
CN202377970U (en) Screwdriver
CN208946032U (en) A kind of pneumatic screwdriver sleeve of side wall fluting
CN107120345A (en) Dismountable expansion bolt and its application method
CN201073755Y (en) Pin removal
CN209110981U (en) A kind of inner bearing provision for disengagement
CN204295625U (en) A kind of aircraft wing bearing removal special purpose device
CN208719079U (en) A kind of aero-engine screw connection
CN212553652U (en) A special tooling for inner bore bearing disassembly
CN107791197B (en) Heat exchange tube penetrating guide head
CN215257307U (en) Bolt easy to assemble and disassemble
CN205363756U (en) Novel horse is drawn in screw rod connection
CN210911229U (en) Pipe snap ring
CN221696734U (en) A disassembly tool for a frozen assembly valve sleeve
CN205765886U (en) A kind of ring main unit reserves sealing cap provision for disengagement

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant