CN212472123U - Environment-friendly degradable tableware machining die convenient to clean - Google Patents

Environment-friendly degradable tableware machining die convenient to clean Download PDF

Info

Publication number
CN212472123U
CN212472123U CN202020996187.6U CN202020996187U CN212472123U CN 212472123 U CN212472123 U CN 212472123U CN 202020996187 U CN202020996187 U CN 202020996187U CN 212472123 U CN212472123 U CN 212472123U
Authority
CN
China
Prior art keywords
plate
fixedly connected
metal
close
flange
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.)
Expired - Fee Related
Application number
CN202020996187.6U
Other languages
Chinese (zh)
Inventor
张丽
丘春林
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN202020996187.6U priority Critical patent/CN212472123U/en
Application granted granted Critical
Publication of CN212472123U publication Critical patent/CN212472123U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The utility model relates to the technical field of tableware processing molds, in particular to an environment-friendly degradable tableware processing mold which is convenient to clean and comprises a mold processing platform and a placing groove, a fixing plate is fixedly connected to the position, close to the back, in the middle of the top of the die processing table along the vertical direction, the top of the fixed plate is fixedly connected with a top plate along the horizontal longitudinal direction, the bottom of the top plate and the position close to the middle part are fixedly connected with an electric telescopic rod, through the structural design of the first convex plate, the second convex plate, the first metal sleeve plate, the second metal sleeve plate and the scraper, can effectually scrape the effect to the surface realization of briquetting, avoided the surface to adhere to degradable plastics and solidify and lead to inconvenient the condition of carrying out the washing to it to appear, solved because degradable plastics solidify the surface at the briquetting and lead to operating personnel need consume great physical power to go the operation and the problem that cleaning efficiency is not high when wasing the briquetting.

Description

Environment-friendly degradable tableware machining die convenient to clean
Technical Field
The utility model relates to a tableware mold processing technical field, concretely relates to environmental protection degradable tableware mold processing convenient to wash.
Background
The environment-friendly degradable tableware is produced by a process die, the process die is required to be used for shaping and processing the degradable tableware, the surface of an extrusion block of the degradable tableware is required to be cleaned every time the degradable tableware is processed, but the traditional process die is used for extruding and forming the degradable tableware, the outer surface of the extrusion block can be too close to the environment-friendly tableware due to extrusion, so that the upper part of the degradable material can be polluted, the traditional cleaning method only utilizes articles such as wet towels to wipe and clean the surface of the extrusion block, if the degradable material adhered to the surface of the extrusion block is solidified, an operator needs to utilize tools such as a push shovel to carry out shoveling operation on the extrusion block, but only the bottom of the extrusion block is convenient to be shoveled when the extrusion block is shoveled, and the circumferential surface of the extrusion block can be blocked due to a driving device or a fixed connecting piece of the process die, so that the rapid and effective shoveling operation is inconvenient to be carried out under the condition that the circumferential Therefore, it is necessary to design a degradable tableware processing mold convenient for the operator to clean, so as to solve the above mentioned problems.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides an environmental protection degradable tableware mold processing convenient to wash possesses the operating personnel of being convenient for and washs advantages such as to extrude the piece, has solved traditional mold processing inconvenient to extrude the piece sanitization and cause inconvenient problem to operating personnel.
The utility model discloses an environmental protection degradable tableware mold processing convenient to wash, including mould processing platform and standing groove, the top middle part of mould processing platform and the position near the back fixedly connect with the fixed plate along the vertical direction, the top of fixed plate along the horizontal vertical fixedly connected with roof, the bottom of roof and the position near the middle part fixedly connected with electric telescopic handle, the bottom fixedly connected with briquetting of electric telescopic handle, the standing groove is located under the briquetting, the top of mould processing platform and the position near the back of standing groove fixedly connected with first flange along the vertical direction, the front of first flange and the position near the top fixedly connected with second flange along the horizontal vertical, the top of second flange runs through and is equipped with the opening and is movably connected with first metal lagging, the top of first metal lagging fixedly connected with second metal lagging, the equal fixedly connected with scraper of the left and right sides of first metal lagging bottom, the scraper is located the left and right sides of briquetting and leaves the clearance between and, the inner chamber and the position department that just is close to the middle part in bottom and the top of first metal lagging all offer for the cavity, the top of second metal lagging runs through and has offered the passageway and be linked together with first metal lagging, electric telescopic handle's output runs through the inside of top and bottom to first metal lagging of second metal lagging.
The utility model discloses an environmental protection degradable tableware mold processing convenient to wash, wherein the second metal lagging is cylindrical structural design, leave the clearance between the inner wall of second metal lagging and the surface of first metal lagging output, anti-skidding line has been seted up to the surface of second metal lagging.
The utility model discloses an environmental protection degradable tableware mold processing convenient to wash, wherein the surface of first metal lagging and the position department that is close to the middle part are along annular fixedly connected with stopper, the top of second flange is run through and is seted up for hollow structure, the left and right sides of second flange all runs through and has seted up spliced eye and swing joint has the inserted bar, the position department that the inserted bar is close to first metal lagging surface is located the bottom of stopper and laminates each other, the position department that the left and right sides of second flange and be close to the spliced eye outside has seted up the thread groove along the annular, the surface of inserted bar just is close to the position department fixedly connected with thread section of thick bamboo at middle part and sets up thread groove mutual threaded connection with the second flange.
The utility model discloses an environmental protection degradable tableware mold processing convenient to wash, wherein electric telescopic handle's output and the position department that is close to the bottom are along annular fixedly connected with limiting plate, the surface of limiting plate is the smooth surface.
The utility model discloses an environmental protection degradable tableware mold processing convenient to wash, wherein one side fixedly connected with metal loop of first metal lagging is kept away from to the inserted bar, the front and the back of metal loop run through to set up for cavity and surface are the smooth surface.
The utility model discloses an environmental protection degradable tableware mold processing convenient to wash, wherein the front of first flange and the position department that is close to the bottom run through and have seted up joint groove and swing joint have the metal to accept the board, the front of fixed plate and the position department that is close to the bottom have seted up slot and fixedly connected with adsorption magnet, the metal is accepted the back of board and is located the fixed plate set up the slot inside and with adsorb each other between the magnet.
The utility model discloses an environmental protection degradable tableware mold processing convenient to wash, wherein the equal fixedly connected with baffle in the left and right sides of second flange, two the baffle is close to the second flange left and right sides one side all with the second flange between leave the clearance, two the position department that the second flange left and right sides was kept away from respectively to the baffle all runs through and has seted up the opening, swing joint between opening and the baffle that the inserted bar was seted up through the baffle, a screw thread section of thick bamboo is located between baffle and the second flange and the diameter size is greater than the open-ended diameter size that the baffle was seted up.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model discloses, through first flange, the second flange, first metal lagging, the second metal lagging, and the structural design of scraper, can effectually realize scraping the effect to the surface of briquetting, avoided the surface to adhere degradable plastics and solidify and lead to inconvenient condition appearance that washs it, solved because degradable plastics solidify at the surface of briquetting and lead to operating personnel need consume great physical power to go to operate and the problem that cleaning efficiency is not high when wasing the briquetting, through first metal lagging, the stopper, the second flange, a baffle, the metal circle, a screw thread section of thick bamboo, the scraper, the structural design of thread groove and inserted bar, can effectually play the restriction effect to first metal lagging, avoid using the device to add man-hour to the degradable tableware and cause the condition appearance that hinders to the course of working.
2. The utility model discloses, through the structural design of fixed plate, first flange, metal accept board and adsorption magnet, can play the operation of accepting through the degradable plastics solidification body that the scraper scraped and was taken off, avoid dropping to the inside of standing groove and take out the condition appearance that the process caused inconvenience to the clearance.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic view of the front cross-sectional structure of the present invention;
FIG. 3 is a schematic left side view of the present invention;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 2 according to the present invention;
FIG. 5 is a schematic view of the shape, structure and structure of the insertion rod of the present invention;
fig. 6 is a schematic view of the position relationship between the second protruding plate and the insertion hole of the present invention.
In the figure: 1. a mold processing table; 2. a fixing plate; 3. a top plate; 4. an electric telescopic rod; 5. a first convex plate; 6. briquetting; 7. a first metal strap; 8. a second metal strap; 9. a second convex plate; 10. a baffle plate; 11. a metal ring; 12. a threaded barrel; 13. a scraper; 14. a thread groove; 15. a limiting block; 16. a metal bearing plate; 17. adsorbing a magnet; 18. a placement groove; 19. inserting a rod; 20. a limiting plate; 21. and (7) inserting holes.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It should be understood, however, that these physical details should not be taken to limit the invention. That is, in some embodiments of the invention, these physical details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-6, the easily cleaned environmental protection degradable tableware processing mold of the present invention comprises a mold processing table 1 and a placement groove 18, wherein a fixed plate 2 is fixedly connected to a position close to the back of the top of the mold processing table 1 along the vertical direction, a top plate 3 is fixedly connected to the top of the fixed plate 2 along the horizontal longitudinal direction, an electric telescopic rod 4 is fixedly connected to the bottom of the top plate 3 and the position close to the middle of the top plate, a pressing block 6 is fixedly connected to the bottom of the electric telescopic rod 4, the placement groove 18 is located under the pressing block 6, a first convex plate 5 is fixedly connected to the top of the mold processing table 1 and the position close to the back of the placement groove 18 along the vertical direction, a second convex plate 9 is fixedly connected to the position close to the top of the front of the first convex plate 5 along the horizontal longitudinal direction, a through hole is formed on the top of the second convex plate 9 and is movably, top fixedly connected with second metal lagging 8 of first metal lagging 7, the equal fixedly connected with scraper 13 in the left and right sides of first metal lagging 7 bottom, scraper 13 is located the left and right sides of briquetting 6 and leaves the clearance between, the inner chamber and the position department at bottom and top and near the middle part of first metal lagging 7 all offer for the cavity, the top of second metal lagging 8 is run through and is seted up the passageway and be linked together with first metal lagging 7, the output of electric telescopic handle 4 runs through the inside of top and bottom to first metal lagging 7 of second metal lagging 8.
Second metal lagging 8 is cylindrical structural design, leaves the clearance between the inner wall of second metal lagging 8 and the surface of first metal lagging 7 output, and anti-skidding line has been seted up to the surface of second metal lagging 8, through the structural design of second metal lagging 8, can make operating personnel conveniently scrape the operation to briquetting 6, has avoided the friction undersize between operating personnel hand and the second metal lagging 8 and has leaded to the rotatory inconvenient condition of application of force to appear.
The outer surface of the first metal sleeve plate 7 and the position close to the middle are provided with a limiting block 15 along an annular fixedly connected with, the top of the second convex plate 9 is penetrated and arranged to be of a hollow structure, the left side and the right side of the second convex plate 9 are both penetrated and arranged with an inserting hole 21 and a movably connected inserting rod 19, the position close to the outer surface of the first metal sleeve plate 7 of the inserting rod 19 is arranged at the bottom of the limiting block 15 and is mutually attached, the position close to the outer side of the inserting hole 21 is arranged at the left side and the right side of the second convex plate 9 and is provided with a thread groove 14 along an annular shape, the position close to the middle of the outer surface of the inserting rod 19 is fixedly connected with a thread cylinder 12 and is in threaded connection with the thread groove 14 arranged on the second convex plate 9, and by the structural design of the thread cylinder 12, the thread groove 14, the limiting block 15, the inserting rod 19 and the inserting hole 21, the limiting effect on the first metal sleeve plate 7 can be effectively achieved, and the machining process caused by the The situation of inconvenience occurs.
The output of electric telescopic handle 4 and the position department that is close to the bottom along annular fixedly connected with limiting plate 20, the surface of limiting plate 20 is the smooth surface, and through limiting plate 20's structural design, effectual a plurality of metal lagging 7 or the activity route has carried out the restriction, has avoided rethread scraper 13 to appear scraper 13 appearance condition appearance of rocking from top to bottom appearing when scraping of the degradable plastics solidification body that exists on briquetting 6 surfaces.
One side fixedly connected with ferrule 11 that first metal lagging 7 was kept away from to inserted bar 19, and the front of ferrule 11 runs through with the back and sets up for cavity and surface are the smooth surface, through the structural design of ferrule 11, can make operating personnel more convenient to the operation of inserted bar 19, has avoided the condition appearance that is difficult for application of force operation when need take out or insert second protruding board 9.
The front of first flange 5 and the position department that is close to the bottom run through and seted up joint groove and swing joint have the metal and accept board 16, slot and fixedly connected with adsorption magnet 17 have been seted up in the front of fixed plate 2 and the position department that is close to the bottom, the metal is accepted the back of board 16 and is located fixed plate 2 set up inside the slot and with adsorb between the magnet 17 mutual adsorption, structural design through adsorption magnet 17, can play fixed restriction effect to the metal accepts board 16, avoided this mold processing in the course of the work the metal to accept board 16 appear sliding and cause the condition appearance of influence to the course of working of degradable tableware.
The equal fixedly connected with baffle 10 in the left and right sides of second flange 9, one side that two baffles 10 are close to the second flange 9 left and right sides all leaves the clearance with between the second flange 9, the position department that two baffles 10 kept away from the second flange 9 left and right sides respectively all runs through and has seted up the opening, swing joint between opening and the baffle 10 that inserted bar 19 was seted up through baffle 10, threaded cylinder 12 is located between baffle 10 and the second flange 9 and the diameter size is greater than the open-ended diameter size that baffle 10 was seted up, through the structural design of second flange 9 and baffle 10, effectual restriction has been carried out to inserted bar 19, the condition that separation dropped between inserted bar 19 and the second flange 9 when having avoided scraping the degradable plastics solidification body that exists again on briquetting 6 surfaces appears.
When the utility model is used, if the degradable solidified body adhered and fixed on the circumferential surface of the pressing block 6 needs to be cleaned, an operator can hold the metal ring 11 by hand, then rotate to one side far away from the center of the second convex plate 9, so that the inserted rod 19 drives the threaded cylinder 12 to move outwards through the threaded groove 14 until the inserted rod 19 is separated from the limiting block 15 fixedly connected with the first metal sleeve plate 7, at the moment, the first metal sleeve plate 7 and the electric telescopic rod 4 are in a loose state, then hold the second metal sleeve plate 8 to press the first metal sleeve plate 7 downwards until the top of the inner wall of the first metal sleeve plate 7 is contacted with the top of the limiting plate 20, at the moment, the scrapers 13 are positioned at the left and right sides of the pressing block 6, then hold the metal bearing plate 16 to pull backwards, so that the metal bearing plate 16 is positioned under the pressing block 6, then rotate the second metal sleeve plate 8, scraper 13 rotates at electric telescopic handle 4's surface through first metal lagging 7 and second metal lagging 8, thereby play the scraping effect to the circumferential surface of briquetting 6, avoid the difficult abluent condition of carrying on of degradable plastics solidification body to appear, scrape the degradable plastics solidification body that the in-process briquetting 6 surface exists and scrape by scraper 13 and drop to the top that metal accepted board 16, operating personnel can utilize the shovel to carry out the shovel to briquetting 6 afterwards or wet towel clean can, treat to scrape the clearance and accomplish the back, exert pressure the pulling behind the inserting groove of seting up through first flange 5 with metal accepted board 16 once more and until taking out, at last to be in the metal accept the degradable plastics solidification body of 16 top surfaces handle can.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (7)

1. The utility model provides an environmental protection degradable tableware mold processing convenient to wash, includes mould processing platform (1) and standing groove (18), its characterized in that: a fixed plate (2) is fixedly connected to the position, close to the back, in the middle of the top of the die machining table (1) in the vertical direction, a top plate (3) is fixedly connected to the top of the fixed plate (2) in the horizontal longitudinal direction, an electric telescopic rod (4) is fixedly connected to the position, close to the middle, of the bottom of the top plate (3), a pressing block (6) is fixedly connected to the bottom of the electric telescopic rod (4), a placing groove (18) is located right below the pressing block (6), a first convex plate (5) is fixedly connected to the position, close to the back of the placing groove (18), of the top of the die machining table (1) in the vertical direction, a second convex plate (9) is fixedly connected to the position, close to the top, of the front of the first convex plate (5) in the horizontal longitudinal direction, a through hole is formed in the top of the second convex plate (9), and a first metal sleeve plate, the top fixedly connected with second metal lagging (8) of first metal lagging (7), the equal fixedly connected with scraper (13) of the left and right sides of first metal lagging (7) bottom, scraper (13) are located the left and right sides of briquetting (6) and leave the clearance between, the inner chamber and the position department that just is close to the middle part of first metal lagging (7) and bottom and top all set up for the cavity, the top of second metal lagging (8) is run through and is seted up the passageway and be linked together with first metal lagging (7), the output of electric telescopic handle (4) runs through the inside of top and bottom to first metal lagging (7) of second metal lagging (8).
2. The environment-friendly degradable tableware processing mold convenient to clean according to claim 1, wherein: the second metal sleeve plate (8) is designed into a cylindrical structure, a gap is reserved between the inner wall of the second metal sleeve plate (8) and the outer surface of the output end of the first metal sleeve plate (7), and anti-skid grains are arranged on the outer surface of the second metal sleeve plate (8).
3. The environment-friendly degradable tableware processing mold convenient to clean according to claim 1, wherein: the outer surface of the first metal sleeve plate (7) and the position close to the middle portion are connected with a limiting block (15) along an annular fixedly, the top of the second convex plate (9) is penetrated and arranged to be of a hollow structure, the left side and the right side of the second convex plate (9) are both penetrated and arranged with an inserting hole (21) and a movably connected inserting rod (19), the position close to the outer surface of the first metal sleeve plate (7) of the inserting rod (19) is located at the bottom of the limiting block (15) and attached to each other, the position close to the outer side of the inserting hole (21) is arranged on the left side and the right side of the second convex plate (9) along an annular and arranged with a threaded groove (14), and the outer surface of the inserting rod (19) and the position close to the middle portion are fixedly connected with a threaded cylinder (12) and are in threaded connection with the threaded groove (14) arranged on the second.
4. The environment-friendly degradable tableware processing mold convenient to clean according to claim 1, wherein: the output end of the electric telescopic rod (4) is close to the bottom, a limiting plate (20) is fixedly connected to the position of the bottom along the ring, and the outer surface of the limiting plate (20) is a smooth surface.
5. The environment-friendly degradable tableware processing mold easy to clean according to claim 3, wherein: one side fixedly connected with metal circle (11) that inserted bar (19) kept away from first metal lagging (7), the front and the back of metal circle (11) run through to be offered for the cavity and the surface is the smooth surface.
6. The environment-friendly degradable tableware processing mold convenient to clean according to claim 1, wherein: the front of first flange (5) just is close to the position department of bottom and runs through and has seted up joint groove and swing joint metal and accept board (16), the front of fixed plate (2) just is close to the position department of bottom and has seted up slot and fixedly connected with adsorption magnet (17), the back of metal is accepted board (16) and is located fixed plate (2) set up the slot inside and with adsorption magnet (17) between adsorb each other.
7. The environment-friendly degradable tableware processing mold easy to clean according to claim 3, wherein: the equal fixedly connected with baffle (10) of the left and right sides of second flange (9), two the baffle (10) are close to the equal and second flange (9) of one side of the left and right sides of second flange (9) and leave the clearance between one side, two the position department that second flange (9) left and right sides was kept away from respectively to baffle (10) all runs through and has seted up the opening, swing joint between opening and baffle (10) that inserted bar (19) were seted up through baffle (10), threaded cylinder (12) are located between baffle (10) and second flange (9) and the diameter size of diameter size that the opening was seted up to baffle (10).
CN202020996187.6U 2020-06-03 2020-06-03 Environment-friendly degradable tableware machining die convenient to clean Expired - Fee Related CN212472123U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020996187.6U CN212472123U (en) 2020-06-03 2020-06-03 Environment-friendly degradable tableware machining die convenient to clean

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020996187.6U CN212472123U (en) 2020-06-03 2020-06-03 Environment-friendly degradable tableware machining die convenient to clean

Publications (1)

Publication Number Publication Date
CN212472123U true CN212472123U (en) 2021-02-05

Family

ID=74448116

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020996187.6U Expired - Fee Related CN212472123U (en) 2020-06-03 2020-06-03 Environment-friendly degradable tableware machining die convenient to clean

Country Status (1)

Country Link
CN (1) CN212472123U (en)

Similar Documents

Publication Publication Date Title
CN212472123U (en) Environment-friendly degradable tableware machining die convenient to clean
CN204977458U (en) Automatic cleaning device of 3D print head
CN111703021A (en) Nozzle assembly for plasticizing part of high-tonnage injection blow molding machine
CN212702559U (en) Oil injection rust prevention device for mechanical parts
CN210552535U (en) Preforming device for double-roll feeding type rubber extruder
CN211729793U (en) Automatic feeding device for plastic processing
CN208681391U (en) One kind is convenient for the different shape and size of auto parts fixtures of clamping
CN210587497U (en) Copper bar peeling device
CN214872429U (en) Tail lamp injection mold's ejection mechanism
CN212415838U (en) A clinical stone device of getting for hepatobiliary branch of academic or vocational study
CN214680403U (en) High-efficient mechanical filter convenient to dismantle and wash
CN212170932U (en) High-temperature stirring device for high polymer material
CN209361947U (en) A kind of feed liquid filter press for white carbon black production
CN111671993B (en) Gastric lavage device for emergency internal medicine clinic
CN208324156U (en) Extruder and its net-changing device
CN208997534U (en) A kind of sulfur-containing smoke gas conduit convenient for cleaning
CN217661798U (en) Resin is with interim flowing water guiding gutter of formula of propping up in advance
CN2191347Y (en) High-efficient grease gun with pull rod without sliding-off
CN220714566U (en) Ointment smearing device
CN212638645U (en) Municipal administration road refuse treatment device
CN210545695U (en) Hot melt adhesive filtering structure for adhesive outlet of pipeline
CN210283174U (en) Melting extrusion molding all-in-one extrusion molding mouth cleaning device
CN217924657U (en) Wall cleaning device for building decoration
CN108058894A (en) A kind of surgery cleaning agent case
CN213223346U (en) Cleaning device for metal mold

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210205

Termination date: 20210603