CN112318082B - Desk-top easel upper frame assembly machine - Google Patents
Desk-top easel upper frame assembly machine Download PDFInfo
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- CN112318082B CN112318082B CN202011174151.0A CN202011174151A CN112318082B CN 112318082 B CN112318082 B CN 112318082B CN 202011174151 A CN202011174151 A CN 202011174151A CN 112318082 B CN112318082 B CN 112318082B
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- shell
- fixedly connected
- sliding
- pulley
- clearance
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- 238000004140 cleaning Methods 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims description 18
- 238000010030 laminating Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims 2
- 238000003780 insertion Methods 0.000 claims 2
- 239000000428 dust Substances 0.000 abstract description 9
- 230000005484 gravity Effects 0.000 abstract description 4
- 230000010405 clearance mechanism Effects 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tables And Desks Characterized By Structural Shape (AREA)
Abstract
The invention discloses a desktop easel upper frame assembling machine, which relates to the technical field of assembling machines and comprises a fixed shell, wherein a moving mechanism is arranged in the fixed shell, a rotating mechanism is connected in the moving mechanism in a clamping manner, a cleaning mechanism is fixedly arranged on one side surface of the rotating mechanism, and the rotating mechanism comprises a first rotating shaft, a threaded cap, a threaded column, a rectangular rod and an installing shell. This scheme is through setting up clearance mechanism, the pulling of rope is connected in the utilization can make the stay cord by the pulling, the cooperation of recycling first pulley and second pulley makes the direction of stay cord obtain changing, thereby make the clearance shell by the stay cord pulling, utilize the slip of first slider in first spout, can make the clearance shell upward movement, recycle the brush and clear up the frame, then loosen the pulling to the stay cord again, the clearance shell drives the brush through gravity and slides downwards, thereby realized the upper and lower clearance to the frame, the efficiency of clearance has been improved, the dust of adhesion on the frame has been clear away, make things convenient for the workman to assemble it.
Description
Technical Field
The invention relates to the technical field of assembling machines, in particular to a desktop easel upper frame assembling machine.
Background
Along with people's quality of life constantly improves, people's interest is also in continuous extension, interest's kind is numerous, wherein the drawing is the great one kind that accounts for in numerous hobbies, some comparatively major or require the higher people to use the easel usually when carrying out the drawing, use the easel can guarantee people's drawing stability, when using the easel to carry out the drawing, people usually need install the frame on the drawing board, it is comparatively troublesome to utilize the manual work to install the frame on the easel, not only waste time easily but also inconvenient in time carry out the adjustment of angle to the frame according to people's needs when installing the frame, the frame is gathering up the dust easily with accumulational in-process in production, the dust and the piece of adhesion can influence people's equipment work.
Therefore, it is necessary to develop a desktop easel upper frame assembly machine for solving at least one of the above technical problems.
Disclosure of Invention
The invention aims to provide a table type easel upper frame assembling machine which can conveniently install a picture frame, adjust the angle of the picture frame in time and clean dust on the picture frame in time.
The technical purpose of the invention is realized by the following technical scheme: a desk easel upper frame assembly machine comprises:
the cleaning device comprises a fixed shell, a movable mechanism is arranged in the fixed shell, a rotating mechanism is clamped in the movable mechanism, and a cleaning mechanism is fixedly arranged on one side surface of the rotating mechanism;
the rotating mechanism comprises a first rotating shaft, a threaded cap, a threaded column, a rectangular rod and a mounting shell;
wherein, the positive joint of set casing inner wall has first bearing, and the first bearing endotheca is equipped with first pivot, and the surface joint of first pivot has the screw thread post, and the surface threaded connection of screw thread post has the screw cap, and the left and right sides face of screw cap all is through rectangular pole fixedly connected with installation shell, the positive fixedly connected with hand wheel of first pivot.
Further, slewing mechanism includes the second pivot, and the equal joint of the left and right sides face of installation shell inner wall has the second bearing, and the second bearing endotheca is equipped with the second pivot, and the surface joint of second pivot has the gyro wheel, and the lower surface of gyro wheel and the lower surface laminating of installation shell inner wall, the last fixed surface of gyro wheel are connected with the backup pad, and the backup pad passes the second through-hole that the installation shell upper surface was seted up and the first through-hole that the set casing upper surface was seted up and extends to the set casing outside, the opposite face of two backup pads respectively with the left and right sides both ends fixed connection of spliced pole.
Furthermore, the outer surface joint of spliced pole has two fixed axles, all is provided with anti-skidding line on two fixed axles.
Furthermore, the one end fixed mounting of first axis of rotation has drive bevel gear, T type spout has been seted up to the upper surface of set casing, and sliding connection has T shape slider in the T shape spout, and the last fixed surface of T shape slider is connected with the slide bar, and the surface sliding connection of slide bar has the sliding sleeve, and the last fixed surface of sliding sleeve is connected with two inserted bars, and two inserted bars are all planted in the round hole that the spliced pole surface was seted up.
Furthermore, send hot subassembly to install in the inside and outside both sides of charging head groove, a plurality of round holes have been seted up to the surface of spliced pole, and a plurality of round holes evenly distributed is at the surface of spliced pole.
Furthermore, the outer surface cover of slide bar is equipped with first spring, and the both ends of first spring are connected with the lower surface of sliding sleeve and the outer fixed surface of slide bar respectively.
Further, clearance mechanism is including the clearance shell, the first slider of the equal fixedly connected with in both sides of the left and right sides of clearance shell inner wall front and back both sides, and first slider sliding connection is in first spout, and a side at the backup pad is seted up to first spout, and the front and the equal fixedly connected with brush in the back of clearance shell inner wall, the positive joint of backup pad has two longitudinal symmetry's second pulley, and the first pulley of gag lever post fixedly connected with is passed through to a side of backup pad, and left first pulley and second pulley and the first pulley and the second pulley on right side have all walked around the stay cord, and the both ends of stay cord are all through pull ring difference fixed connection in the left and right sides of clearance shell upper surface, and the lower fixed surface of stay cord is connected with the connection rope.
Furthermore, a fixed plate is fixedly connected to one side of the supporting plate, two extension plates are fixedly connected to one side of the fixed plate, and a supporting plate is arranged between the two extension plates.
Furthermore, a third sliding block is fixedly connected to one side face of the abutting plate, the third sliding block is slidably connected to a third sliding groove formed in one side face of the fixing plate, and the front face of the abutting plate is fixedly connected with the back face of the front side extension plate through a second spring.
Furthermore, teeth are fixedly installed on the back surface of the abutting plate, and a rubber pad is fixedly installed on the front surface of the rear side extension plate.
Compared with the prior art, the scheme has the beneficial effects that:
this scheme is through setting up clearance mechanism, the pulling of rope is connected in the utilization can make the stay cord by the pulling, the cooperation of recycling first pulley and second pulley makes the direction of stay cord obtain changing, thereby make the clearance shell by the stay cord pulling, utilize the slip of first slider in first spout, can make the clearance shell upward movement, recycle the brush and clear up the frame, then loosen the pulling to the stay cord again, the clearance shell drives the brush through gravity and slides downwards, thereby realized the upper and lower clearance to the frame, the efficiency of clearance has been improved, the dust of adhesion on the frame has been clear away, make things convenient for the workman to assemble it.
2. This scheme is through setting up moving mechanism, control first pivot and rotate, the rotation that utilizes first pivot can make the screw thread post rotate, thereby make the screw thread cap remove, the removal that utilizes the screw thread cap can make the installation shell remove, thereby it moves on the easel to drive the frame, realize the quick installation of frame, a large amount of time has been practiced thrift, the rethread sets up slewing mechanism, the rotation that utilizes the spliced pole can make the backup pad carry out the angle change under the rotation of second pivot, the rethread sets up T shape slider, utilize the slip of T shape slider in T shape spout can make the spliced pole follow the spliced pole back-and-forth movement, thereby it realizes spacing to the spliced pole to utilize the inserted pole to insert in the round hole, thereby carry out the adjustment of angle to the frame according to people's needs are quick, conveniently assemble some small-size parts on the frame.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is an enlarged schematic view of the structure A of the present invention;
FIG. 3 is a schematic top sectional view of the cleaning shell of the present invention;
FIG. 4 is a schematic top sectional view of an extension plate according to the present invention;
fig. 5 is a schematic top sectional view of the fixing case according to the present invention.
In the figure: 1. a stationary case; 2. a first through hole; 3. a second through hole; 4. a moving mechanism; 41. a first rotating shaft; 42. a threaded cap; 43. a threaded post; 44. a rectangular bar; 45. mounting a shell; 5. a rotating mechanism; 51. connecting columns; 52. a fixed shaft; 53. a support plate; 54. a second rotating shaft; 55. a roller; 6. a cleaning mechanism; 61. connecting ropes; 62. a first slider; 63. a first pulley; 64. pulling a rope; 65. a second pulley; 66. cleaning the shell; 67. a brush; 7. a second slider; 8. a pull ring; 9. a fixing plate; 10. a circular hole; 11. a sliding sleeve; 12. a T-shaped slider; 13. a slide bar; 14. a first spring; 15. an extension plate; 16. a rubber pad; 17. a resisting plate; 18. a second spring; 19. a third slider; 20. and (4) inserting the rod.
Detailed Description
The invention will be further described by means of specific embodiments, which are given by way of illustration only and are not intended to limit the scope of the invention.
Example 1:
a desk type easel upper frame assembling machine is shown in figures 1-5 and comprises a fixed shell 1, wherein a moving mechanism 4 is arranged in the fixed shell 1, a rotating mechanism 5 is connected in the moving mechanism 4 in a clamping manner, and a cleaning mechanism 6 is fixedly arranged on one side surface of the rotating mechanism 5;
the moving mechanism 4 comprises a first rotating shaft 41, a threaded cap 42, a threaded column 43, a rectangular rod 44 and a mounting shell 45;
wherein, the positive joint of the 1 inner wall of set casing has first bearing, and first bearing endotheca is equipped with first pivot 41, and the surface joint of first pivot 41 has screw thread post 43, and the surface threaded connection of screw thread post 43 has screw cap 42, and the left and right sides face of screw cap 42 all is through rectangular rod 44 fixedly connected with installation shell 45, the positive fixedly connected with hand wheel of first pivot 41.
In practical application, put into earlier the frame that needs the installation between support board 17 and rubber pad 16, utilize the elasticity of second spring 18 to crowd the frame tightly, the first pivot 41 of the second control rotates again, the rotation that utilizes first pivot 41 drives screw post 43 and rotates, the rotation that utilizes screw post 43 makes screw cap 42 drive rectangular rod 44 and removes, thereby the removal that utilizes rectangular rod 44 drives installation shell 45 and removes and drive backup pad 53 and remove, thereby realize the removal of frame, make the frame remove to the easel that needs the installation on.
Example 2:
the utility model provides a frame kludge on desk-top easel, with embodiment 1 difference, as shown in fig. 1, slewing mechanism 5 includes second pivot 54, the equal joint of the left and right sides face of installation shell 45 inner wall has the second bearing, the second bearing endotheca is equipped with second pivot 54, the surface joint of second pivot 54 has gyro wheel 55, the lower surface of gyro wheel 55 and the lower surface laminating of installation shell 45 inner wall, the last fixed surface of gyro wheel 55 is connected with backup pad 53, backup pad 53 passes second through-hole 3 that installation shell 45 upper surface was seted up and the first through-hole 2 that set up of set up 1 upper surface and extends to the set up shell 1 outside, the opposite face of two backup pads 53 respectively with spliced pole 51 both ends fixed connection about.
In practical application, when the angle that needs carry out the frame changes, people hold fixed axle 52 and rotate spliced pole 51, utilize spliced pole 51's rotation to drive backup pad 53 and rotate, backup pad 53 carries out steady deflection under the rotation of second pivot 54 and the roll of gyro wheel 55, utilize the rotation of backup pad 53 to make the frame rotate, thereby realize the angle change of frame, utilize the elasticity extension of first spring 14 to make inserted bar 20 insert into round hole 10 when the angle that reachs needs and carry out spacingly spliced pole 51.
Example 3:
a desk easel upper frame assembling machine is different from the embodiment 2 in that, as shown in figure 1, a cleaning mechanism 6 comprises a cleaning shell 66, the left and right sides of the front and back side surfaces of the inner wall of the cleaning shell 66 are fixedly connected with first sliding blocks 62, the first sliding blocks 62 are connected in first sliding grooves in a sliding way, the first sliding grooves are arranged on one side surface of a supporting plate 53, the front and back surfaces of the inner wall of the cleaning shell 66 are fixedly connected with brushes 67, the front surface of the supporting plate 53 is clamped with two second pulleys 65, one side surface of the supporting plate 53 is fixedly connected with a first pulley 63 through a limiting rod, the first pulley 63 and the second pulley 65 on the left side are connected with the first pulley 63 and the second pulley 65 on the right side in a sliding way through a pull rope 64, the lower surface of the pull rope 64 is fixedly connected with a connecting rope 61, the upper surface of the cleaning shell 66 is fixedly connected with the two ends of the pull rope 64 through pull rings 8.
In practical application, when needs clear up the frame, rope 61 is connected in the downward pulling, thereby pulling stay cord 64 moves, stay cord 64 takes place the angle change under the cooperation of first pulley 63 and second pulley 65, thereby pulling clearance shell 66 upward movement, thereby clearance shell 66 drives the clearance of brush 67 upward movement realization to the frame dust, send out the hand again, clearance shell 66 drives brush 67 downstream through self gravity, thereby clear up the dust on the frame once more.
The working principle is as follows: firstly, a picture frame to be installed is placed between the abutting plate 17 and the rubber pad 16, the picture frame is squeezed tightly by the elasticity of the second spring 18, the rotation of the first rotating shaft 41 is utilized to drive the threaded column 43 to rotate, the rotation of the threaded column 43 is utilized to drive the threaded cap 42 to drive the rectangular rod to move, the movement of the rectangular rod 44 is utilized to drive the installation shell 45 to move so as to drive the support plate 53 to move, so that the picture frame moves to the picture frame to be installed, when the angle of the picture frame needs to be changed, people hold the fixed shaft 52 and rotate the connecting column 51, the rotation of the connecting column 51 is utilized to drive the support plate 53 to rotate, the support plate 53 rotates stably under the rotation of the second rotating shaft 54 and the rolling of the roller 55, the rotation of the support plate 53 is utilized to rotate the picture frame, so as to realize the angle change of the picture frame, when the required angle is reached, the first spring 14 is utilized to enable the inserting rod 20 to be inserted into the round hole 10 to limit the connecting column 51, when needs clear up the frame, rope 61 is connected in the downward pulling to pulling stay cord 64 moves, and stay cord 64 takes place the angle change under the cooperation of first pulley 63 and second pulley 65, thereby pulling clearance shell 66 upward movement, thereby clearance shell 66 drives the clearance of brush 67 upward movement realization to the frame dust, send out the hand again, and clearance shell 66 drives brush 67 downstream through self gravity, thereby clears up the dust on the frame once more.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a frame kludge on desk-top easel which characterized in that includes:
the cleaning device comprises a fixed shell (1), wherein a moving mechanism (4) is arranged in the fixed shell (1), a rotating mechanism (5) is connected in the moving mechanism (4) in a clamping manner, and a cleaning mechanism (6) is fixedly arranged on one side surface of the rotating mechanism (5);
the moving mechanism (4) comprises a first rotating shaft (41), a threaded cap (42), a threaded column (43), a rectangular rod (44) and a mounting shell (45);
the front side of the inner wall of the fixed shell (1) is clamped with a first bearing, a first rotating shaft (41) is sleeved in the first bearing, a threaded column (43) is clamped on the outer surface of the first rotating shaft (41), a threaded cap (42) is connected with the outer surface of the threaded column (43) in a threaded manner, the left side surface and the right side surface of the threaded cap (42) are fixedly connected with an installation shell (45) through rectangular rods (44), and a hand wheel is fixedly connected with the front side of the first rotating shaft (41);
slewing mechanism (5) include second pivot (54), the equal joint of the left and right sides face of installation shell (45) inner wall has the second bearing, the second bearing endotheca is equipped with second pivot (54), the surface joint of second pivot (54) has gyro wheel (55), the lower surface of gyro wheel (55) and the lower surface laminating of installation shell (45) inner wall, the last fixed surface of gyro wheel (55) is connected with backup pad (53), second through-hole (3) that installation shell (45) upper surface was seted up and first through-hole (2) that set casing (1) upper surface was seted up are passed in backup pad (53) and extend to the set casing (1) outside, the opposite face of two backup pads (53) respectively with both ends fixed connection about spliced pole (51).
2. The upper frame assembling machine for desk easels according to claim 1, wherein two fixing shafts (52) are clamped on the outer surface of the connecting column (51), and anti-slip lines are arranged on the two fixing shafts (52).
3. The upper frame assembly machine of the table easel according to claim 1, characterized in that a T-shaped sliding groove is formed on the upper surface of the fixed shell (1), a T-shaped sliding block (12) is connected in the T-shaped sliding groove in a sliding manner, a sliding rod (13) is fixedly connected on the upper surface of the T-shaped sliding block (12), a sliding sleeve (11) is connected on the outer surface of the sliding rod (13) in a sliding manner, two insertion rods (20) are fixedly connected on the upper surface of the sliding sleeve (11), and the two insertion rods (20) are inserted in circular holes (10) formed on the outer surface of the connecting column (51).
4. The upper frame assembling machine for the table easel according to claim 3, wherein the outer surface of the connecting column (51) is provided with a plurality of round holes (10), and the round holes (10) are evenly distributed on the outer surface of the connecting column (51).
5. The upper frame assembly machine of a desk easel according to claim 3, wherein the outer surface of the sliding rod (13) is sleeved with a first spring (14), and two ends of the first spring (14) are respectively fixedly connected with the lower surface of the sliding sleeve (11) and the outer surface of the sliding rod (13).
6. The upper frame assembling machine for the desk easel according to claim 1, wherein the cleaning mechanism (6) comprises a cleaning shell (66), the left and right sides of the front and back sides of the inner wall of the cleaning shell (66) are fixedly connected with first sliding blocks (62), the first sliding blocks (62) are slidably connected in first sliding grooves, the first sliding grooves are arranged on one side surface of a supporting plate (53), the front and back surfaces of the inner wall of the cleaning shell (66) are fixedly connected with brushes (67), the front surface of the supporting plate (53) is clamped with two second pulleys (65) which are symmetrical up and down, one side surface of the supporting plate (53) is fixedly connected with a first pulley (63) through a limiting rod, the first pulley (63) and the second pulley (65) on the left side and the first pulley (63) and the second pulley (65) on the right side are wound with pull ropes (64), and the two ends of the pull ropes (64) are respectively fixedly connected on the left and right sides of the upper surface of the cleaning shell (66) through pull rings (8), the lower surface of the pull rope (64) is fixedly connected with a connecting rope (61).
7. The upper frame assembling machine for the desk easel according to claim 1, wherein a fixing plate (9) is fixedly connected to one side surface of the supporting plate (53), two extension plates (15) are fixedly connected to one side surface of the fixing plate (9), and a resisting plate (17) is arranged between the two extension plates (15).
8. The upper frame assembling machine for the table easel according to claim 7, wherein a third sliding block (19) is fixedly connected to one side surface of the abutting plate (17), the third sliding block (19) is slidably connected in a third sliding groove formed in one side surface of the fixing plate (9), and the front surface of the abutting plate (17) is fixedly connected with the back surface of the front side extension plate (15) through a second spring (18).
9. The frame assembly machine according to claim 7, wherein the back of the abutting plate (17) is fixedly provided with teeth, and the front of the rear extension plate (15) is fixedly provided with a rubber pad (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011174151.0A CN112318082B (en) | 2020-10-28 | 2020-10-28 | Desk-top easel upper frame assembly machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011174151.0A CN112318082B (en) | 2020-10-28 | 2020-10-28 | Desk-top easel upper frame assembly machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112318082A CN112318082A (en) | 2021-02-05 |
| CN112318082B true CN112318082B (en) | 2021-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011174151.0A Active CN112318082B (en) | 2020-10-28 | 2020-10-28 | Desk-top easel upper frame assembly machine |
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| Country | Link |
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| CN (1) | CN112318082B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4643384A (en) * | 1986-01-03 | 1987-02-17 | Guerin Charles A | Easel |
| CN2527464Y (en) * | 2001-07-27 | 2002-12-25 | 李希广 | Easel for art speciality |
| CN102896492A (en) * | 2012-09-19 | 2013-01-30 | 宁波海王机电科技有限公司 | Picture frame assembling equipment |
| CN206507614U (en) * | 2016-10-31 | 2017-09-22 | 大庆师范学院 | A kind of art teaching easel |
| CN208837250U (en) * | 2017-08-26 | 2019-05-10 | 深圳市杨梅红艺术教育集团有限公司 | A kind of drawing board bracket being convenient for changing drawing board |
| CN209955649U (en) * | 2019-01-28 | 2020-01-17 | 太原师范学院 | Novel fine arts drawing board centre gripping device |
| CN210870818U (en) * | 2019-05-22 | 2020-06-30 | 江苏沭彩画材有限公司 | Picture frame with dust removal function |
-
2020
- 2020-10-28 CN CN202011174151.0A patent/CN112318082B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4643384A (en) * | 1986-01-03 | 1987-02-17 | Guerin Charles A | Easel |
| CN2527464Y (en) * | 2001-07-27 | 2002-12-25 | 李希广 | Easel for art speciality |
| CN102896492A (en) * | 2012-09-19 | 2013-01-30 | 宁波海王机电科技有限公司 | Picture frame assembling equipment |
| CN206507614U (en) * | 2016-10-31 | 2017-09-22 | 大庆师范学院 | A kind of art teaching easel |
| CN208837250U (en) * | 2017-08-26 | 2019-05-10 | 深圳市杨梅红艺术教育集团有限公司 | A kind of drawing board bracket being convenient for changing drawing board |
| CN209955649U (en) * | 2019-01-28 | 2020-01-17 | 太原师范学院 | Novel fine arts drawing board centre gripping device |
| CN210870818U (en) * | 2019-05-22 | 2020-06-30 | 江苏沭彩画材有限公司 | Picture frame with dust removal function |
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| Publication number | Publication date |
|---|---|
| CN112318082A (en) | 2021-02-05 |
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