CN111671450A - Automatic replacing device for filter disc of medical X-ray machine - Google Patents
Automatic replacing device for filter disc of medical X-ray machine Download PDFInfo
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- CN111671450A CN111671450A CN202010602870.1A CN202010602870A CN111671450A CN 111671450 A CN111671450 A CN 111671450A CN 202010602870 A CN202010602870 A CN 202010602870A CN 111671450 A CN111671450 A CN 111671450A
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- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 description 2
- 238000004846 x-ray emission Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
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Abstract
The invention discloses an automatic filter replacing device for a medical X-ray machine, which comprises a bottom plate, wherein a mounting plate is fixedly connected to the middle part of the lower end of the bottom plate, a carrier plate is fixedly connected to one side of the upper end of the bottom plate, a first chute is formed in one side, close to the middle part of the bottom plate, of the upper end of the carrier plate, a driving mechanism is arranged in the first chute, first limit grooves are formed in the inner walls of the front part and the rear part of the first chute, a placing plate is arranged on one side, close to the middle part of the bottom plate, of the upper end of the carrier plate, a supporting block is arranged on one side, far away from the carrier plate, of the lower end of the placing plate, and a mounting groove is formed in one side, far away from the middle part of the bottom plate, of the upper end of the carrier plate, of the carrier plate, the filter disc does not need to be manually taken by workers, and the replacement process is convenient.
Description
Technical Field
The invention relates to a replacing device, in particular to an automatic replacing device for a filter disc of a medical X-ray machine, and belongs to the technical field of medical equipment.
Background
An X-ray machine is a device for generating X-rays, and is one of a plurality of devices used in hospitals, a filter is an important component on the X-ray machine, and when the X-ray machine is used, workers can often replace the corresponding filter according to requirements.
At present when the staff is changing the filter element, mostly put original filter element in the equipment of depositing the filter element to take out new filter element, and install new filter element on X ray machine, the operation process is comparatively troublesome, and the filter element slides on staff's hand easily in the change process, falls on ground or desktop and appears the damage.
Disclosure of Invention
The invention provides an automatic replacing device for a filter disc of a medical X-ray machine, which effectively solves the problems in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to an automatic replacing device for a filter element of a medical X-ray machine, which comprises a bottom plate, wherein a mounting plate is fixedly connected to the middle part of the lower end of the bottom plate, a carrier plate is fixedly connected to one side of the upper end of the bottom plate, a first chute is arranged on one side, close to the middle part of the bottom plate, of the upper end of the carrier plate, a driving mechanism is arranged in the first chute, first limit grooves are respectively arranged on the front inner wall and the rear inner wall of the first chute, a placing plate is arranged on one side, close to the middle part of the bottom plate, of the upper end of the carrier plate, a supporting block is arranged on one side, far away from the carrier plate, of the lower end of the placing plate, a mounting groove is arranged on one side, far away from the middle part of the bottom plate, of the upper end, the utility model discloses a mounting groove, including servo motor, drive shaft, mounting groove, first spout, second spout, fixedly connected with drive shaft on servo motor's output down and the output, servo motor's one end is kept away from to the drive shaft extends to the inside of mounting groove, the drive shaft is located the inside one end fixedly connected with second bevel gear of mounting groove, servo motor's afterbody cover is equipped with the protecting crust, the second spacing groove has all been seted up on the upper end opposite side of bottom plate, the second spacing groove has all.
As a preferable technical scheme of the invention, the driving mechanism comprises a translation plate, the upper end of the translation plate and the upper end of the carrier plate are kept level, the translation plate is slidably connected inside a first sliding groove, the front part and the rear part of the translation plate are slidably connected inside a first limiting groove on the same side, the middle part of one side of the translation plate, which is far away from the mounting block, is provided with a groove, the middle part of one side of the translation plate, which is near to the mounting block, is provided with a driving screw in a threaded connection manner, one end of the driving screw, which is far away from the mounting block, penetrates through one side of the translation plate, which is near to the mounting block, and the groove and extends to one side of the translation plate, which is far away from the mounting block, is fixedly connected with a baffle disc, the diameter of the baffle disc is smaller than the width of the groove, one end of the driving screw, which is near to the mounting block, penetrates through, the driving screw is positioned on the outer wall of part of the circumference in the mounting groove and is sleeved with a first bevel gear which is fixedly connected with the driving screw, and the first bevel gear is meshed with a second bevel gear.
As a preferable technical scheme of the invention, one end of the driving screw rod, which is positioned in the mounting groove, is rotatably connected with a carrying disc, and one side of the carrying disc, which is far away from the driving screw rod, is fixedly connected to the inner wall of the mounting groove.
As a preferred technical scheme of the invention, the support block comprises a fixed block, the upper end of the fixed block and the upper end of the carrier plate are flush, the fixed block is of a T-shaped structure, the lower end of the fixed block is fixedly connected with a movable block, the movable block is slidably connected inside the second chute, a clamping groove is formed in one side of the fixed block close to the middle of the bottom plate, and the diameter of the clamping groove is larger than that of a blocking disc of the driving mechanism.
According to a preferable technical scheme of the invention, the front part and the rear part of the moving block are fixedly connected with limiting plates, and the limiting plates are connected inside the second limiting grooves on the same side in a sliding manner.
According to a preferred technical scheme, the placing plate comprises a plate body, one side, close to the mounting block, of the lower end of the plate body abuts against the upper end of a translation plate of the driving mechanism, one side, far away from the mounting block, of the lower end of the plate body abuts against the upper end of a fixing block of the supporting block, a plurality of placing grooves are formed in the upper end of the plate body, the distances between every two adjacent placing grooves are the same, filter elements are clamped in the placing grooves, the lower ends, close to the mounting block, of the front and rear portions of the plate body are fixedly connected with first supporting plates, the first supporting plates are detachably connected to the translation plate of the driving mechanism through first mounting bolts, the lower ends, far away from the mounting block, of the front and rear portions of the plate body are fixedly connected with second supporting plates, and the second supporting plates are detachably connected to the.
As a preferred technical scheme of the invention, the two sides of the upper end of the plate body are respectively clamped with a cover plate, the inner walls of the cover plates are respectively contacted with the plate body, and the inner walls of the upper ends of the two cover plates are respectively provided with a rubber layer.
As a preferred technical scheme of the invention, the lower end of the peripheral outer wall of the protective shell is fixedly connected with a fixed frame, and the fixed frame is detachably connected to the mounting block through a fixed bolt.
The invention has the following beneficial effects:
1. the invention relates to an automatic filter replacing device for an X-ray machine, wherein a placing plate for placing a filter is connected to a support plate through a driving mechanism, the placing plate is driven by the driving mechanism during use, the filter on the placing plate is automatically moved to an X-ray emitting opening of the X-ray machine, workers do not need to manually take the filter, and the replacing process is convenient.
2. The filter disc is placed in the placing groove of the placing plate, the placing plate slides on the support plate in the replacing process, manual operation is not needed in the replacing process, the first mounting bolt and the second mounting bolt can be detached when the filter disc in the placing groove is replaced, the placing plate is integrally replaced, and the filter disc is prevented from falling on the ground and being damaged when the filter disc is taken singly.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a cutaway view of the present invention;
FIG. 2 is a view of the area at A in FIG. 1;
FIG. 3 is a schematic structural diagram of a carrier according to the present invention;
FIG. 4 is an external structural view of the present invention;
FIG. 5 is a schematic view of the support block of the present invention.
In the figure: 1. a base plate; 2. a carrier plate; 3. a first chute; 4. a drive mechanism; 41. a translation plate; 42. a groove; 43. a drive screw; 44. a first bevel gear; 45. a carrying tray; 46. a bearing; 47. a catch tray; 5. placing the plate; 51. a plate body; 52. a placement groove; 53. a filter disc; 54. a cover plate; 55. a first support plate; 56. a first mounting bolt; 57. a second support plate; 58. a second mounting bolt; 6. a support block; 61. a fixed block; 62. a card slot; 63. a moving block; 64. a limiting plate; 7. a first limit groove; 8. mounting grooves; 9. mounting blocks; 10. fixing grooves; 11. a servo motor; 12. a drive shaft; 13. a second bevel gear; 14. a protective shell; 15. a fixing frame; 16. fixing the bolt; 17. a second chute; 18. a second limit groove; 19. and (7) mounting the plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): as shown in figures 1-5, the automatic filter replacing device for a medical X-ray machine comprises a bottom plate 1, wherein a mounting plate 19 is fixedly connected to the middle part of the lower end of the bottom plate 1, a carrier plate 2 is fixedly connected to one side of the upper end of the bottom plate 1, a first chute 3 is arranged on one side of the upper end of the carrier plate 2 close to the middle part of the bottom plate 1, a driving mechanism 4 is arranged in the first chute 3, first limit grooves 7 are respectively arranged on the front and rear inner walls of the first chute 3, a placing plate 5 is arranged on one side of the upper end of the carrier plate 2 close to the middle part of the bottom plate 1, a supporting block 6 is arranged on one side of the lower end of the placing plate 5 far from the carrier plate 2, a mounting groove 8 is arranged on one side of the upper end of the carrier plate 2 far from the middle part of the bottom plate 1, a mounting block 9 is fixedly, the plumb line of fixed slot 10 and mounting groove 8 coincides mutually, the inside fixedly connected with servo motor 11 of fixed slot 10, servo motor 11's output is down and fixedly connected with drive shaft 12 on the output, the one end that servo motor 11 was kept away from to drive shaft 12 extends to the inside of mounting groove 8, drive shaft 12 is located the inside one end fixedly connected with second bevel gear 13 of mounting groove 8, servo motor 11's afterbody cover is equipped with protecting crust 14, second spout 17 has been seted up to the upper end opposite side of bottom plate 1, second spacing groove 18 has all been seted up on the front and back inner wall of second spout 17, places board 5 through 4 movements of actuating mechanism during the use, makes and places board 5 and remove in X ray machine X-ray emission department, reaches the purpose of automatic change filter 53.
Wherein, the fixed frame 15 of lower extreme fixedly connected with of the peripheral outer wall of protective housing 14, fixed frame 15 passes through fixing bolt 16 demountable connection on installation piece 9, is convenient for fix protective housing 14 on installation piece 9, utilizes protective housing 14 to protect servo motor 11.
Wherein, the driving mechanism 4 comprises a translation plate 41, the upper end of the translation plate 41 and the upper end of the carrier plate 2 are flush, the translation plate 41 is slidably connected inside the first sliding groove 3, the front and back parts of the translation plate 41 are slidably connected inside the first limiting groove 7 on the same side, a groove 42 is formed in the middle part of one side of the translation plate 41 away from the mounting block 9, a driving screw 43 is threadedly connected to the middle part of one side of the translation plate 41 close to the mounting block 9, one end of the driving screw 43 away from the mounting block 9 penetrates through one side of the translation plate 41 close to the mounting block 9 and the groove 42 and extends to one side of the translation plate 41 away from the mounting block 9, one end of the driving screw 43 away from the mounting block 9 is fixedly connected with a baffle disc 47, the diameter of the baffle disc 47 is smaller than the width of the groove 42, one end of the driving screw 43 close to the mounting block 9 penetrates through the inside of the first sliding, the driving screw 43 is rotatably connected to the carrier plate 2 between the first sliding groove 3 and the mounting groove 8 through a bearing 46, one end of the driving screw 43, which is located inside the mounting groove 8, is rotatably connected with a carrying disc 45, one side of the carrying disc 45, which is far away from the driving screw 43, is fixedly connected to the inner wall of the mounting groove 8, a first bevel gear 44 is sleeved and fixedly connected to the outer wall of a part of the circumference of the driving screw 43, which is located inside the mounting groove 8, the first bevel gear 44 is meshed with a second bevel gear 13, the first bevel gear 44 and the second bevel gear 13 are driven through a servo motor 11, the driving screw 43 is rotated by the first bevel gear 44, and then the translation plate 41 is driven by the driving screw 43, so that the translation plate 41 is driven to move the.
The supporting block 6 comprises a fixing block 61, the upper end of the fixing block 61 and the upper end of the carrier plate 2 are flush, the fixing block 61 is of a T-shaped structure, a moving block 63 is fixedly connected to the lower end of the fixing block 61, the moving block 63 is slidably connected to the inside of the second chute 17, limiting plates 64 are fixedly connected to the front portion and the rear portion of the moving block 63, the limiting plates 64 are slidably connected to the inside of the second limiting groove 18 on the same side, a clamping groove 62 is formed in one side, close to the middle of the bottom plate 1, of the fixing block 61, the diameter of the clamping groove 62 is larger than that of the blocking disc 47 of the driving mechanism 4, the fixing block 61 is used for supporting one side, far away from the mounting.
Wherein, the placing plate 5 comprises a plate body 51, one side of the lower end of the plate body 51 close to the mounting block 9 is abutted against the upper end of the translation plate 41 of the driving mechanism 4, one side of the lower end of the plate body 51 far from the mounting block 9 is abutted against the upper end of a fixing block 61 of the supporting block 6, the upper end of the plate body 51 is provided with a plurality of placing grooves 52, the distances between two adjacent placing grooves 52 are the same, the filter discs 53 are clamped inside the placing grooves 52, the lower ends of the front and back parts of the plate body 51 close to the mounting block 9 are fixedly connected with first supporting plates 55, the first supporting plates 55 are detachably connected on the translation plate 41 of the driving mechanism 4 through first mounting bolts 56, the lower ends of the front and back parts of the plate body 51 far from the mounting block 9 are fixedly connected with second supporting plates 57, the second supporting plates 57 are detachably connected on the fixing block 61 of the supporting block 6 through second mounting, different filter discs 53 can be stored conveniently, and the driving mechanism 4 can be used for moving the different filter discs 53 at the X-ray emitting opening of the X-ray machine conveniently.
Wherein, the upper end both sides of plate body 51 all the joint have a apron 54, the inner wall of apron 54 all contacts with plate body 51, two all be equipped with the rubber layer on the upper end inner wall of apron 54, be convenient for protect filter 53, prevent simultaneously that filter 53 from breaking away from standing groove 52.
Specifically, when the invention is used, the invention is installed on an X-ray machine, a power supply is switched on, then a cover plate 54 is taken down from a plate body 51, a filter 53 placed on the plate body 51 is exposed, then a servo motor 11 is started through a switch arranged on an installation block 9, the servo motor 11 rotates a second bevel gear 13 through a driving shaft 12, the second bevel gear 13 rotates a driving screw 43 through a first bevel gear 44, the driving screw 43 drives a translation plate 41 to move in a direction away from the installation block 9, meanwhile, the plate body 51 drives a supporting block 6 to move on a bottom plate 1, a fixed block 61 of the supporting block 6 supports one side of the plate body 51 away from the installation block 9, the balance of the plate body 51 is maintained, when a required filter 53 is aligned with an X-ray emitting buckle opening of the X-ray machine, the servo motor 11 is closed, then the X-ray machine is started to work, when the filter 53 needs to be replaced, the servo motor, the screw 43 is driven by the servo motor 11 to rotate forward or backward, other filter discs 53 are moved to the X-ray emission opening of the X-ray machine, when the filter discs 53 on the plate body 51 are replaced, the cover plate 54 is covered, the first mounting bolt 56 and the second mounting bolt 58 can be detached, the plate body 51 is detached from the translation plate 41 and the fixed block 61, the plate body 51 with the new filter discs 53 is placed on the translation plate 41 and the fixed block 61, the plate body 51 is fixed on the translation plate 41 and the fixed block 61 through the first mounting bolt 56 and the second mounting bolt 58, then the cover plate 54 is opened, and when the filter discs 53 need to be replaced, the steps are repeated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The automatic filter replacing device for the medical X-ray machine comprises a bottom plate (1) and is characterized in that a mounting plate (19) is fixedly connected to the middle of the lower end of the bottom plate (1), a support plate (2) is fixedly connected to one side of the upper end of the bottom plate (1), a first sliding groove (3) is formed in one side, close to the middle of the bottom plate (1), of the upper end of the support plate (2), a driving mechanism (4) is installed inside the first sliding groove (3), first limiting grooves (7) are formed in the inner walls of the front portion and the rear portion of the first sliding groove (3), a placing plate (5) is installed on one side, close to the middle of the bottom plate (1), of the upper end of the support plate (2), a supporting block (6) is installed on one side, far away from the support plate (2), of the lower end of the placing plate (5), a mounting groove (8) is formed in one side, far away from the middle of, fixed slot (10) have been seted up to one side of keeping away from bottom plate (1) middle part on installation piece (9) upper end, the perpendicular bisector of fixed slot (10) and mounting groove (8) coincides mutually, inside fixedly connected with servo motor (11) of fixed slot (10), fixedly connected with drive shaft (12) on the output down and the output of servo motor (11), the one end that servo motor (11) were kept away from in drive shaft (12) extends to the inside of mounting groove (8), drive shaft (12) are located the inside one end fixedly connected with second bevel gear (13) of mounting groove (8), the afterbody cover of servo motor (11) is equipped with protecting crust (14), second spout (17) have been seted up to the upper end opposite side of bottom plate (1), second spacing groove (18) have all been seted up on the front and back inner wall of second spout (17).
2. The automatic filter replacing device for the medical X-ray machine according to claim 1, wherein the driving mechanism (4) comprises a translation plate (41), the upper end of the translation plate (41) is flush with the upper end of the carrier plate (2), the translation plate (41) is slidably connected inside the first sliding groove (3), the front and rear parts of the translation plate (41) are slidably connected inside the first limiting groove (7) on the same side, a groove (42) is formed in the middle part of one side of the translation plate (41) far away from the mounting block (9), a driving screw (43) is in threaded connection with the middle part of one side of the translation plate (41) near the mounting block (9), one end of the driving screw (43) far away from the mounting block (9) penetrates through one side of the translation plate (41) near the mounting block (9) and the groove (42) and extends to one side of the translation plate (41) far away from the mounting block (9), one end fixedly connected with fender dish (47) that installation piece (9) were kept away from in drive screw (43), the diameter ratio of fender dish (47) is little than the width of recess (42), drive screw (43) are close to the inside of first spout (3) and extend to the inside of mounting groove (8) of one end passing of installation piece (9), drive screw (43) rotate through bearing (46) and connect on support plate (2) between first spout (3) and mounting groove (8), drive screw (43) are located the inside partial circumference outer wall of mounting groove (8) and are established and fixedly connected with first bevel gear (44) of cover, first bevel gear (44) and second bevel gear (13) meshing connection.
3. The automatic filter replacing device for the medical X-ray machine according to claim 2, wherein one end of the driving screw (43) inside the mounting groove (8) is rotatably connected with a carrying disc (45), and one side of the carrying disc (45) far away from the driving screw (43) is fixedly connected on the inner wall of the mounting groove (8).
4. The automatic filter element replacing device for the medical X-ray machine according to claim 3, wherein the supporting block (6) comprises a fixed block (61), the upper end of the fixed block (61) is flush with the upper end of the carrier plate (2), the fixed block (61) is of a T-shaped structure, the lower end of the fixed block (61) is fixedly connected with a moving block (63), the moving block (63) is slidably connected inside the second sliding groove (17), a clamping groove (62) is formed in one side of the fixed block (61) close to the middle of the bottom plate (1), and the diameter of the clamping groove (62) is larger than that of a blocking disc (47) of the driving mechanism (4).
5. The automatic filter element replacing device for the medical X-ray machine according to claim 4, wherein limiting plates (64) are fixedly connected to the front and rear parts of the moving block (63), and the limiting plates (64) are slidably connected to the inner parts of the second limiting grooves (18) on the same side.
6. The automatic filter replacing device for the medical X-ray machine according to claim 2, wherein the placing plate (5) comprises a plate body (51), one side of the lower end of the plate body (51) close to the mounting block (9) abuts against the upper end of the translation plate (41) of the driving mechanism (4), one side of the lower end of the plate body (51) far away from the mounting block (9) abuts against the upper end of the fixing block (61) of the supporting block (6), a plurality of placing grooves (52) are formed in the upper end of the plate body (51), the distances between two adjacent placing grooves (52) are the same, the filters (53) are clamped in the plurality of placing grooves (52), the lower ends of the front and back parts of the plate body (51) close to the mounting block (9) are fixedly connected with first support plates (55), and the first support plates (55) are detachably connected to the translation plate (41) of the driving mechanism (4) through first mounting bolts (56), the lower ends of the front and rear parts of the plate body (51) far away from the mounting block (9) are fixedly connected with second support plates (57), and the second support plates (57) are detachably connected to fixing blocks (61) of the supporting blocks (6) through second mounting bolts (58).
7. The automatic filter replacing device for the medical X-ray machine according to claim 6, wherein cover plates (54) are clamped on both sides of the upper end of the plate body (51), the inner walls of the cover plates (54) are in contact with the plate body (51), and rubber layers are arranged on the inner walls of the upper ends of the two cover plates (54).
8. The automatic filter replacing device for the medical X-ray machine according to claim 1, wherein a fixing frame (15) is fixedly connected to the lower end of the peripheral outer wall of the protective shell (14), and the fixing frame (15) is detachably connected to the mounting block (9) through a fixing bolt (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010602870.1A CN111671450A (en) | 2020-06-29 | 2020-06-29 | Automatic replacing device for filter disc of medical X-ray machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010602870.1A CN111671450A (en) | 2020-06-29 | 2020-06-29 | Automatic replacing device for filter disc of medical X-ray machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111671450A true CN111671450A (en) | 2020-09-18 |
Family
ID=72456790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010602870.1A Withdrawn CN111671450A (en) | 2020-06-29 | 2020-06-29 | Automatic replacing device for filter disc of medical X-ray machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN111671450A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112130269A (en) * | 2020-09-27 | 2020-12-25 | 浙江华疆科技有限公司 | Automatic filter replacing device of exposure machine |
-
2020
- 2020-06-29 CN CN202010602870.1A patent/CN111671450A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112130269A (en) * | 2020-09-27 | 2020-12-25 | 浙江华疆科技有限公司 | Automatic filter replacing device of exposure machine |
| CN112130269B (en) * | 2020-09-27 | 2022-12-30 | 浙江华疆科技有限公司 | Automatic filter replacing device of exposure machine |
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Application publication date: 20200918 |