Multi-channel fluorescent color filtering block mounting device

Abstract

The invention discloses a multi-channel fluorescent color filtering block mounting device which comprises a stepping motor and a fixing frame which are fixedly connected to a fluorescent microscope support, the output end of the stepping motor is fixedly connected with a rotating shaft, the rotating shaft penetrates through the fixing frame, a rotating disc is fixedly mounted at the bottom of the rotating shaft, and a mounting disc is fixedly mounted on the rotating disc. A plurality of positioning mounting blocks are uniformly arranged on the mounting disc along the circumference, a fluorescent color filtering block is mounted on each positioning mounting block, an original point sensor and a mechanical positioning frame are fixedly mounted on the inner side and the outer side of the fixing frame respectively, a sensing piece is correspondingly mounted on the rotating shaft, and positioning holes are uniformly formed in the annular surface of the top of the mounting disc along the circumference and correspond to the positioning mounting blocks; elastic reset balls are correspondingly installed on the mechanical positioning frame and matched with the positioning holes for mechanical positioning. According to the invention, automatic and accurate switching can be realized, and the switching accuracy is ensured by adopting double modes of automatic control and mechanical positioning; the fluorescent color filtering blocks are simple in fixing mode and convenient to disassemble and assemble, and installation gaps do not exist.

Description

Technical Field

[0001] This invention relates to the field of microscopic imaging technology, and in particular to a multi-channel fluorescence filter mounting device. Background Technology

[0002] When light of a specific wavelength shines on certain substances, these substances emit light with a wavelength longer than that of the illuminating light. This phenomenon is called fluorescence. The illuminating light is called the excitation light, and the excited light is called fluorescence. A fluorescence microscope is a microscope that uses this principle, using light of certain wavelengths as a light source to illuminate the object being observed, thereby eliciting fluorescence for observation.

[0003] Current multi-channel fluorescence filter mounting devices are mainly integrated with traditional microscopes, resulting in relatively small channels. Larger devices would be bulky and difficult to arrange the optical path, and are primarily limited to 2, 4, or 6 channels. This is because having too many channels makes it difficult to achieve automatic and precise switching between multiple fluorescence filters. Furthermore, the existing standard fluorescence filters mounted on mounting plates are either inconvenient to install or remove, or have large installation gaps, causing the installed fluorescence filters to wobble during switching, affecting switching accuracy. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention designs a multi-channel fluorescent filter block installation device.

[0005] The present invention adopts the following technical solution: A multi-channel fluorescence filter mounting device includes a stepper motor and a mounting frame fixedly connected to a fluorescence microscope support. The output end of the stepper motor is fixedly connected to a rotating shaft, which passes through the mounting frame. A turntable is fixedly mounted at the bottom of the rotating shaft, and a mounting plate is fixedly mounted on the turntable. Multiple positioning mounting blocks are evenly arranged along the circumference of the mounting plate, and a fluorescence filter is mounted on each positioning mounting block. An origin sensor and a mechanical positioning frame are fixedly mounted on the inner and outer sides of the mounting frame, respectively. A sensing plate is correspondingly mounted on the rotating shaft. Positioning holes are evenly opened along the circumference of the positioning mounting blocks on the top ring surface of the mounting plate. A ball bearing with elastic reset is correspondingly mounted on the mechanical positioning frame, and the ball bearing cooperates with the positioning holes for mechanical positioning.

[0006] Preferably, the cross-section of the positioning mounting block is dovetail-shaped, and the connecting part of the fluorescent filter block is provided with a dovetail groove, and the fluorescent filter block is inserted into the positioning mounting block.

[0007] Preferably, a stepped hole is formed on the outer surface of the positioning mounting block, and a clamping pin for clamping is installed in the stepped hole. The tail end of the clamping pin is a positioning shaft, which is engaged with the inner hole of the stepped hole. An adjusting cone surface is provided in the middle of the clamping pin, and an adjusting screw hole is formed on the top of the positioning mounting block. The adjusting screw hole is connected to the outer hole of the stepped hole, and an adjusting screw is installed in the adjusting screw hole. The tail end of the adjusting screw passes through the adjusting screw hole and presses against the adjusting cone surface of the clamping pin.

[0008] Preferably, the bottom of the mechanical positioning frame has a screw hole, in which a ball is placed. A ball cover is floatingly installed at the bottom of the screw hole, with the bottom of the ball partially exposed. A return spring is provided on the upper part of the ball and locked by a limiting member, which is threadedly connected to the screw hole.

[0009] Preferably, the positioning mounting block has a nail-removing buckle on one side of the outer hole of the stepped hole.

[0010] Preferably, the outer surface of the positioning mounting block is provided with a concave surface.

[0011] Preferably, a light-transmitting hole is provided on the turntable at the bottom of the fluorescent filter block.

[0012] Preferably, the origin sensor is a Hall sensor.

[0013] Preferably, the mechanical positioning frame has mounting holes, which are oval holes, and the mechanical positioning frame is fixedly connected to the fixing frame through the mounting holes and bolts.

[0014] Preferably, the mounting plate is fixedly connected to the turntable by bolts, and a flange is installed at the bottom of the rotating shaft, with the turntable fixedly connected to the flange by bolts.

[0015] The beneficial effects of the present invention are: (1) The present invention designs a multi-channel fluorescent filter block installation device, which can realize 10 channels or even more channels of fluorescent switching, and can realize automatic and accurate switching. The dual method of automatic control plus mechanical positioning is used to ensure the accuracy of switching; (2) The fluorescent filter block is fixed in a simple way, easy to disassemble and assemble, and there will be no installation gap, ensuring the position accuracy after switching. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 A type of front view; Figure 3 yes Figure 1 A schematic diagram of a structure after removing two fluorescent color filters; Figure 4 This is a schematic diagram of one structure of the mechanical positioning frame in this invention; Figure 5 yes Figure 4 A type of front view; Figure 6 yes Figure 5 Cross-sectional view along the AA direction; Figure 7 This is a schematic diagram of one structure of the clamping nail in this invention; Figure 8 This is a schematic diagram of a fluorescent filter block in this invention; In the diagram: 1. Stepper motor, 2. Fixing frame, 3. Turntable, 4. Mounting plate, 5. Rotating shaft, 6. Coupling, 7. Origin sensor, 8. Sensing plate, 9. Mechanical positioning frame, 10. Positioning mounting block, 11. Clamping pin, 12. Adjusting screw hole, 13. Positioning hole, 14. Light-transmitting hole, 15. Concave surface, 16. Mounting hole, 17. Ball bearing, 18. Ball bearing cover, 19. Return spring, 20. Limiting component, 21. Positioning shaft, 22. Adjusting conical surface, 23. Fluorescent color filter block, 24. Dovetail groove. Detailed Implementation

[0017] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example: Figures 1-3 As shown, a multi-channel fluorescence filter mounting device includes a stepper motor 1 and a mounting bracket 2 fixedly connected to a fluorescence microscope support. The output end of the stepper motor is fixedly connected to a rotating shaft 5 via a coupling 6. The rotating shaft passes through the mounting bracket, and a turntable 3 is fixedly mounted at the bottom of the rotating shaft. A mounting plate 4 is fixedly mounted on the turntable. Ten positioning mounting blocks 10 are evenly arranged along the circumference of the mounting plate, and a fluorescence filter 23 is mounted on each positioning mounting block. An origin sensor 7 and a mechanical positioning frame 9 are fixedly mounted on the inner and outer sides of the mounting bracket, respectively. A sensing element 8 is correspondingly mounted on the rotating shaft. Positioning holes 13 are evenly opened along the circumference of the positioning mounting blocks on the top ring surface of the mounting plate. Elastically reset ball bearings are correspondingly mounted on the mechanical positioning frame, and the ball bearings cooperate with the positioning holes for mechanical positioning. The origin sensor is a Hall sensor. The mounting plate is fixedly connected to the turntable by bolts, and a flange is mounted at the bottom of the rotating shaft. The turntable is fixedly connected to the flange by bolts.

[0018] This invention allows for the configuration of a fluorescence switching turntable with 10 or more channels. A closed-loop stepper motor drives the fluorescence filter blocks and mounting plate to rotate for switching, while a home point sensor confirms the system's reference position. Simultaneously, the mounting plate is designed with positioning holes; when the filter is installed in the corresponding hole position, a mechanical positioning device automatically aligns the turntable, eliminating control-related errors.

[0019] like Figures 4-6As shown, the bottom of the mechanical positioning frame has a screw hole containing a ball bearing 17. A ball bearing cover 18 is floatingly mounted at the bottom of the screw hole, with a portion of the ball bearing's bottom exposed. A return spring 19 is located above the ball bearing and is locked in place by a limiting member 20, which is threadedly connected to the screw hole. The mechanical positioning frame has mounting holes 16, which are oval-shaped holes. The mechanical positioning frame is fixedly connected to the fixing frame via the mounting holes and bolts.

[0020] When the mechanical positioning frame is in use, when the stepper motor drives the turntable to switch to a position close to the designated position, the ball bearings at the bottom of the mechanical positioning frame approach the positioning holes of the corresponding positioning blocks on the mounting plate. The ball bearings roll into the positioning holes to achieve precise mechanical positioning. Combined with the origin sensor to confirm the system's reference positioning, the accuracy of the switching is guaranteed by a dual method.

[0021] like Figure 3 , Figure 7 and Figure 8 As shown, the positioning mounting block has a dovetail-shaped cross-section, and the connecting part of the fluorescent filter block has a corresponding dovetail groove 24. The fluorescent filter block is inserted into the positioning mounting block. A stepped hole is opened on the outer surface of the positioning mounting block, and a clamping pin 11 is installed in the stepped hole. The tail end of the clamping pin is a positioning shaft 21, which mates with the inner hole of the stepped hole. An adjusting cone surface 22 is provided in the middle of the clamping pin. An adjusting screw hole 12 is opened on the top of the positioning mounting block, which communicates with the outer hole of the stepped hole. An adjusting screw is installed in the adjusting screw hole, and the tail end of the adjusting screw passes through the adjusting screw hole and presses against the adjusting cone surface of the clamping pin. A pin removal buckle is opened on the side of the outer hole of the stepped hole on the positioning mounting block.

[0022] When installing the fluorescent filter block, first insert the clamping pin into the stepped hole, so that the positioning shaft at the end of the clamping pin is inserted into the inner hole of the stepped hole. Then, insert the dovetail groove into the corresponding positioning mounting block. Rotate the adjusting screw to make the clamping pin press outward and tighten on the inner side of the fluorescent filter block, so that the fluorescent filter block is installed firmly and more accurately positioned after switching.

[0023] The positioning and mounting block has a recessed surface 15 on its outer surface. The recessed surface facilitates the installation and removal of the fluorescent filter block without interference from the clamping pins. A light-transmitting hole 14 is correspondingly opened on the turntable at the bottom of the fluorescent filter block to achieve better optical path design.

[0024] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A multi-channel fluorescence filter mounting device, comprising a stepper motor and a mounting bracket fixedly connected to a fluorescence microscope support, characterized in that, The stepper motor output end is fixedly connected to a rotating shaft, which passes through a fixed frame. A turntable is fixedly installed at the bottom of the rotating shaft, and a mounting plate is fixedly installed on the turntable. Multiple positioning mounting blocks are evenly arranged along the circumference of the mounting plate, and a fluorescent color filter block is installed on each positioning mounting block. An origin sensor and a mechanical positioning frame are fixedly installed on the inner and outer sides of the fixed frame, respectively. A sensing plate is installed on the rotating shaft. Positioning holes are evenly opened along the circumference of the positioning mounting blocks on the top ring surface of the mounting plate. A ball bearing with elastic reset is installed on the mechanical positioning frame, and the ball bearing cooperates with the positioning hole for mechanical positioning.

2. The multi-channel fluorescent filter block installation device according to claim 1, characterized in that, The cross-section of the positioning and mounting block is dovetail-shaped, and the connecting part of the fluorescent filter block is provided with a dovetail groove, and the fluorescent filter block is inserted into the positioning and mounting block.

3. The multi-channel fluorescent filter block installation device according to claim 1, characterized in that, A stepped hole is formed on the outer surface of the positioning mounting block. A clamping pin is installed in the stepped hole. The tail end of the clamping pin is a positioning shaft, which mates with the inner hole of the stepped hole. An adjusting cone surface is provided in the middle of the clamping pin. An adjusting screw hole is formed on the top of the positioning mounting block. The adjusting screw hole communicates with the outer hole of the stepped hole. An adjusting screw is installed in the adjusting screw hole. The tail end of the adjusting screw passes through the adjusting screw hole and presses against the adjusting cone surface of the clamping pin.

4. The multi-channel fluorescent filter block installation device according to claim 1, characterized in that, The mechanical positioning frame has a screw hole at the bottom, in which a ball is placed. A ball cover is floatingly installed at the bottom of the screw hole, with the bottom of the ball partially exposed. A return spring is provided on the upper part of the ball and locked by a limiting member, which is threadedly connected to the screw hole.

5. The multi-channel fluorescent filter block installation device according to claim 3, characterized in that, The positioning mounting block has a nail-removing buckle on one side of the outer hole of the stepped hole.

6. The multi-channel fluorescent filter block installation device according to claim 3, characterized in that, The positioning mounting block has a concave surface on its outer surface.

7. The multi-channel fluorescent filter block installation device according to claim 1, characterized in that, A light-transmitting hole is correspondingly opened on the turntable at the bottom of the fluorescent filter block.

8. The multi-channel fluorescent filter block installation device according to claim 1, characterized in that, The origin sensor is a Hall sensor.

9. The multi-channel fluorescent filter block installation device according to claim 1, characterized in that, The mechanical positioning frame has mounting holes, which are oval-shaped holes. The mechanical positioning frame is fixedly connected to the fixing frame through the mounting holes and bolts.

10. The multi-channel fluorescent filter block installation device according to claim 1, characterized in that, The mounting plate is fixedly connected to the turntable by bolts, and a flange is installed at the bottom of the rotating shaft. The turntable is fixedly connected to the flange by bolts.

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