Device for polishing optical fiber at front end of endoscope
By designing a device including a grinding disc, a sliding table and an endoscope clamping mechanism, the problem of inconsistent optical fiber polishing angles in the prior art is solved, a stable and uniform polishing effect is achieved, and the quality and efficiency of optical fiber polishing are improved.
Patent Information
- Application Number
- CN202421418833.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-20
AI Technical Summary
In the prior art, it is difficult to ensure the angle consistency of optical fiber polishing equipment, resulting in the optical fiber end surface being easily formed into beveled or multi-hedrons, affecting the lighting effect and the imaging effect of the optical system.
A device including a frame, a grinding disc mechanism, a sliding table mechanism and an endoscope clamping mechanism is designed. The optical fiber at the front end of the endoscope is polished through the grinding disc mechanism. The sliding table mechanism drives the endoscope to reciprocate, and the endoscope clamping mechanism ensures that the end surface of the optical fiber is parallel to the grinding disc.
The stability and reliability of the polishing process are achieved, ensuring uniform polishing, improving polishing quality and efficiency, while reducing maintenance and operation complexity.
Smart Images
Figure CN222661227U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of polishing devices, in particular to a device for polishing optical fibers at the front end of an endoscope. Background Art
[0002] The rigid tube endoscope is mainly composed of an optical imaging system and a lighting system: the optical part looks like a long and thin metal tube, and inside it is a complete optical system composed of many lenses. The lighting system is composed of light entering from the light guide hole at the rear end of the endoscope, and the light is transmitted through the internal optical fiber to the front end of the endoscope through the lighting hole for illumination. At present, most of the equipment for polishing optical fibers is a rotating grinding disc. The end of the optical fiber is polished by tilting a handheld endoscope 30° so that the front end of the endoscope and the grinding disc are parallel. Because the handheld endoscope cannot ensure the same angle, it is easy to cause the end face of the optical fiber to form an inclined surface during the polishing process, and form a polyhedron during the adjustment process, which will cause light efficiency loss, affecting the lighting effect and the imaging effect of the optical system. Utility Model Content
[0003] In order to solve the problems existing in the prior art, the present application proposes a device for polishing the optical fiber at the front end of an endoscope, so as to make the polishing process stable, reliable and easy to operate.
[0004] In order to achieve the above-mentioned purpose, the present application proposes a device for polishing the optical fiber at the front end of an endoscope, comprising a frame, a grinding disc mechanism, a sliding mechanism, and an endoscope clamping mechanism, wherein the grinding disc mechanism and the sliding mechanism are assembled on the frame, and the endoscope clamping mechanism is fixed on the sliding mechanism, and the endoscope clamped by the endoscope clamping mechanism is driven by the sliding mechanism to reciprocate relative to the frame, and during the movement, the optical fiber at the front end of the endoscope is polished by the grinding disc mechanism.
[0005] In some embodiments, the frame includes a plurality of support columns and a table top arranged at the top of all the support columns. The table top is supported and fixed by the support columns. A detachable guard plate is provided between two adjacent support columns. An adjustable foot pad is provided at the bottom of each support column. A first through hole is provided on the table top for adapting the grinding disc mechanism.
[0006] In some embodiments, the grinding disc mechanism includes a crossbeam bracket, which is fixed to the lower surface of the table top, and a grinding disc fixing plate and a grinding disc motor fixing plate are respectively fixed on the crossbeam bracket, and a grinding disc motor is mounted on the grinding disc motor fixing plate. The grinding disc motor drives a pulley to rotate via a belt, and the pulley is fixed on a rotating shaft. The rotating shaft is connected to the grinding disc fixing plate via a bearing, and a grinding disc is also fixedly connected to the rotating shaft, and the grinding disc corresponds to the first through hole. When the grinding disc motor is controlled to rotate, the optical fiber at the front end of the endoscope is polished by the rotating grinding disc, and the speed of the grinding disc motor is adjustable.
[0007] In some embodiments, the grinding wheel mechanism also includes a water tank, which is mounted on the beam bracket. The water tank includes a first bottom plate, a second through hole is provided at the center of the first bottom plate, the rotating shaft passes through the second through hole, a first enclosure is provided at the outer edge of the first bottom plate, and a second enclosure is provided at the edge of the second through hole. An annular groove structure is formed by the first enclosure, the first bottom plate and the second enclosure, which is used to allow the liquid in the polishing process to flow into the water tank, and the height of the top of the first enclosure > the height of the grinding wheel > the height of the top of the second enclosure.
[0008] In some embodiments, the slide mechanism includes a slide base, the slide base includes a second bottom plate, a third through hole is provided on the second bottom plate, during the movement of the slide base, the third through hole corresponds to the first through hole, a first slider is provided on the lower surface of the second bottom plate, the first slider is used in conjunction with a first linear guide rail provided on the upper surface of the table, a first mounting plate for assembling the endoscope clamping mechanism is provided on the upper surface of the second bottom plate, and the slide base can reciprocate along the first linear guide rail under the action of the centring crank slider mechanism.
[0009] In some embodiments, the concentric crank slider mechanism includes a slide motor mounted on the table surface, the slide motor adopts an adjustable speed motor, a balance wheel is fixed on the output shaft of the slide motor, a first connecting shaft is fixed on the balance wheel, when the slide motor is driven to move, the first connecting shaft on the balance wheel performs eccentric motion, a first fixed plate is fixed on the second base plate, a fixed shaft is provided on the first fixed plate, the fixed shaft is connected to one end of the stud bolt via a joint bearing, the first connecting shaft is connected to the other end of the stud bolt via another joint bearing, when the slide motor is driven to move, the slide base performs reciprocating motion along the first linear guide rail, the distance between the two joint bearings can be adjusted by adjusting the stud bolt, and then the reciprocating motion stroke of the slide base can be adjusted.
[0010] In some embodiments, the endoscope clamping mechanism includes an endoscope fixing mechanism, an endoscope rotation adjustment mechanism, an endoscope tilt adjustment mechanism and a second fixed plate, wherein the endoscope rotation adjustment mechanism is mounted on the endoscope fixing mechanism, the endoscope is rotated by the endoscope rotation adjustment mechanism so that the front end face of the endoscope is rotated to a desired state, the endoscope adjusted by the endoscope rotation adjustment mechanism is fixed by the endoscope fixing mechanism, the endoscope fixing mechanism is slidably connected to the endoscope tilt adjustment mechanism, and the downward sliding stroke of the endoscope fixing mechanism is limited by a limiting mechanism; the endoscope tilt adjustment mechanism is mounted on the second fixed plate, the inclination angle of the endoscope is adjusted by the endoscope tilt adjustment mechanism so that the front end face of the endoscope remains parallel to the plane of the grinding disc, and the second fixed plate is fixed to the first mounting plate.
[0011] In some embodiments, the endoscope fixing mechanism includes a second mounting plate, on one surface of which a plurality of clamping members are provided at intervals for clamping and fixing the endoscope, and on another surface of the second mounting plate a second slider is provided, and a second linear guide rail used in conjunction with the second slider is provided on the endoscope tilt adjustment mechanism, and the limiting mechanism is also provided at the lower end of the second linear guide rail.
[0012] In some embodiments, the endoscope rotation adjustment mechanism includes a rotating sleeve and a fixed sleeve. The endoscope is inserted into the rotating sleeve, and the rotating sleeve and the endoscope can be locked by a first adjusting knob connected to the rotating sleeve along the radial direction of the rotating sleeve. The outer wall of the rotating sleeve is connected to the inner wall of the fixed sleeve via a bearing, and the rotating sleeve and the fixed sleeve can be locked by a second adjusting knob connected to the fixed sleeve along the radial direction of the fixed sleeve. The fixed sleeve is fixed to the upper end of the second mounting plate via a bracket, and the endoscope tube is clamped and fixed by the multiple clamps.
[0013] In some embodiments, the endoscope tilt adjustment mechanism includes a support frame fixed on the second fixed plate, the support frame includes two supporting side plates arranged opposite to each other and a supporting base plate connected therebetween, a second connecting shaft is rotatably arranged between the two supporting side plates at one end of the support frame, and a receiving groove is provided at the two supporting side plates at the other end of the support frame, the receiving groove is arranged along the horizontal direction, and nuts are placed in the two receiving grooves, the nut can rotate but basically cannot produce displacement along the axial direction of the nut, the lower end of the stud used in conjunction with the nut can be accommodated in the light holes correspondingly arranged on the supporting base plate and the second fixed plate, the upper end of the stud can lift one end of the support plate with an inclined surface, the other end of the support plate with an inclined surface is connected to the second connecting shaft, and the second linear guide is arranged at the inclined surface of the support plate with an inclined surface; when the nut is rotated, under the action of the stud, the support plate with an inclined surface rotates with the second connecting shaft as a hinge point to achieve the adjustment of the inclination angle of the endoscope, so that the front end face of the endoscope remains parallel to the plane of the grinding disc.
[0014] The beneficial effect of the scheme of the present application is that the above-mentioned device for polishing the optical fiber at the front end of the endoscope has the advantages of stable and reliable polishing process, convenient operation, uniform polishing, high polishing quality, high polishing efficiency, easy maintenance and safe operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic structural diagram of a device for polishing an optical fiber at the front end of an endoscope in an embodiment is shown.
[0016] Figure 2 A schematic structural diagram of a rack in an embodiment is shown.
[0017] Figure 3 A schematic diagram of the three-dimensional structure of the grinding disc mechanism in the embodiment is shown.
[0018] Figure 4 A schematic diagram of the top view of the grinding disc mechanism in the embodiment is shown.
[0019] Figure 5 The bottom view of the structure of the grinding disc mechanism in the embodiment is shown.
[0020] Figure 6 The schematic diagram of the structure of the water tank in the embodiment is shown.
[0021] Figure 7 A schematic diagram of the three-dimensional structure of the slide mechanism in the embodiment is shown.
[0022] Figure 8 A bottom view structural diagram of the slide mechanism in the embodiment is shown.
[0023] Fig. 9 A structural schematic diagram of a centring crank slider mechanism in an embodiment is shown.
[0024] Fig.10 A schematic structural diagram of an endoscope clamping mechanism at one angle in the embodiment is shown.
[0025] Fig.11 A structural schematic diagram of the endoscope clamping mechanism at another angle in the embodiment is shown.
[0026] Fig.12 A schematic cross-sectional view of a local structure of the endoscope clamping mechanism in the embodiment is shown.
[0027] Fig.13 A schematic diagram of the electrical principle of a device for polishing an optical fiber at the front end of an endoscope in an embodiment is shown.
[0028] Figure numerals: 1-frame, 2-grinding disc mechanism, 3-slide mechanism, 4-endoscope clamping mechanism, 1-1-support column, 1-2-guard plate, 1-3-adjustable foot pad, 1-4-table top, 1-5-first through hole, 2-1-crossbeam bracket, 2-2-grinding disc, 2-3-grinding disc fixing plate, 2-4-water tank, 2-4-1-first enclosure, 2-4-2-first bottom plate, 2-4-3-second enclosure, 2-4-4-second through hole, 2-5-pulley, 2-6-belt, 2-7-grinding disc motor, 2-8-grinding disc motor fixing plate, 3-1-slide base, 3-1-1-second bottom plate, 3-1-2-third enclosure plate, 3-1-3-third through hole, 3-2-first mounting plate, 3-3-centering crank slider mechanism, 3-3-1-balance wheel, 3-3-2-spherical bearing, 3-3-3-stud bolt, 3-3-4-fixed shaft, 3-3-5-first fixed plate , 3-3-6-first connecting shaft, 3-4-protective cover, 3-5-first linear guide rail, 3-6-slide motor, 3-7-first slider, 4-1-endoscope fixing mechanism, 4-1-1-second mounting plate, 4-1-2-clamping member, 4-1-3-second slider, 4-1-4-second linear guide rail, 4-1-5-limiting mechanism, 4-2-endoscope rotation adjustment mechanism, 4-2-1-rotating sleeve, 4-2-2-first adjustment Section knob, 4-2-3-fixing sleeve, 4-2-4-second adjusting knob, 4-3-endoscope tilt adjustment mechanism, 4-3-1-support plate with inclined surface, 4-3-2-second connecting shaft, 4-3-3-support frame, 4-3-3-1-support side plate, 4-3-3-2-accommodating groove, 4-3-3-3-support bottom plate, 4-3-4-nut, 4-3-5-stud, 4-4-second fixing plate, 4-4-1-light hole. DETAILED DESCRIPTION
[0029] The specific implementation of the present application is further described below in conjunction with the accompanying drawings.
[0030] In the description of the present application, it should be understood that the terms "first", "second", etc. are used to distinguish similar objects, rather than to describe or indicate a specific order or sequence. The terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.
[0031] like Figures 1 to 12 As shown, the device for polishing the optical fiber at the front end of an endoscope involved in the present application includes a frame 1, a grinding disc mechanism 2, a sliding mechanism 3, and an endoscope clamping mechanism 4, wherein the grinding disc mechanism 2 and the sliding mechanism 3 are assembled on the frame 1, and the endoscope clamping mechanism 4 is fixed on the sliding mechanism 3, and the endoscope clamped by the endoscope clamping mechanism 4 is driven by the sliding mechanism 3 to reciprocate relative to the frame 1, and during the movement, the optical fiber at the front end of the endoscope is polished by the grinding disc mechanism 2.
[0032] The frame 1 is the main frame part of the polishing device, providing a working platform and supporting and fixing other mechanisms. The frame 1 includes a plurality of support columns 1-1 (for example, four) and a table top 1-4 arranged at the top of all the support columns 1-1. The table top 1-4 is supported and fixed by the support columns 1-1. A removable guard plate 1-2 is provided between two adjacent support columns 1-1 to facilitate repair and maintenance; an adjustable foot pad 1-3 is provided at the bottom of each support column 1-1, which can adjust the height and is used for effective support when placed on uneven height ground, and can also keep the frame 1 horizontal; the table top 1-4 is a supporting and fixing plate for the grinding disc mechanism 2 and the slide mechanism 3. The table top 1-4 is provided with a first through hole 1-5 for adapting to the grinding disc mechanism 2. The outer surface of the table top 1-4 is wrapped with a layer of stainless steel plate, which can effectively prevent rust.
[0033] The grinding disc mechanism 2 is a main component in the process of polishing the optical fiber at the front end of the endoscope, including a crossbeam bracket 2-1, the crossbeam bracket 2-1 is fixed to the lower surface of the table 1-4, a grinding disc fixing plate 2-3 and a grinding disc motor fixing plate 2-8 are fixed on the crossbeam bracket 2-1, a grinding disc motor 2-7 is mounted on the grinding disc motor fixing plate 2-8, the grinding disc motor 2-7 drives the pulley 2-5 to rotate via a belt 2-6, the pulley 2-5 is fixed on the rotating shaft, and the rotating shaft is connected to the grinding disc fixing plate 2-3 via a bearing. 3 are connected, and a grinding disc 2-2 is also fixedly connected to the rotating shaft, and the grinding disc 2-2 corresponds to the first through hole 1-5. When the grinding disc motor 2-7 is controlled to rotate, the optical fiber at the front end of the endoscope is polished by the rotating grinding disc 2-2. The speed of the grinding disc motor 2-7 is adjustable, so that the grinding disc 2-2 can select a suitable speed during polishing; the grinding disc mechanism 2 involved in the application adopts a belt 2-6 to drive the grinding disc 2-2, which has a simple structure, stable transmission, buffering and vibration absorption, low cost, no lubrication, and easy maintenance. In order to improve the load capacity and maximum speed and reduce the amplitude, the rotating shaft is connected to the grinding disc fixing plate 2-3 via a double bearing mechanism; in order to prevent the liquid from flowing into the frame 1 during the polishing process, the grinding disc mechanism 2 also includes a water tank 2-4, which is assembled on the beam bracket 2-1, and the water tank 2-4 includes a first bottom plate 2-4-2, and a second through hole 2-4-4 is provided at the center position of the first bottom plate 2-4-2, and the rotating shaft passes through the second through hole 2-4-4, A first enclosure 2-4-1 is provided at the outer edge of the first bottom plate 2-4-2, and a second enclosure 2-4-3 is provided at the edge of the second through hole 2-4-4. An annular groove structure is formed by the first enclosure 2-4-1, the first bottom plate 2-4-2 and the second enclosure 2-4-3, which is used to allow the liquid in the polishing process to flow into the water tank 2-4. The height of the top of the first enclosure 2-4-1 is greater than the height of the grinding wheel 2-2 and the height of the top of the second enclosure 2-4-3.
[0034] The slide mechanism 3 is a reciprocating mechanism, which drives the endoscope clamping mechanism 4 fixed thereon to reciprocate so as to evenly polish the optical fiber at the front end of the endoscope. The slide mechanism 3 includes a slide base 3-1, and the slide base 3-1 includes a second bottom plate 3-1-1. A third enclosure 3-1-2 may be provided at the outer edge of the second bottom plate 3-1-1. A third through hole 3-1-3 is provided on the second bottom plate 3-1-1. During the movement of the slide base 3-1, the third through hole 3-1-3 corresponds to the first through hole 1-5. The lower surface of the second bottom plate 3-1-1 is provided with a first slider 3-7, and the first slider 3-7 is aligned with the table surface 1-5. 4 is used in conjunction with the first linear guide 3-5 provided on the upper surface. In this embodiment, two first linear guides 3-5 are provided on the table 1-4. The two first linear guides 3-5 are disposed on the left and right sides of the first through hole 1-5. Each first linear guide 3-5 is disposed along the front-to-back direction. Two groups of first sliders 3-7 are provided on the lower surface of the second bottom plate 3-1-1. Each group of first sliders 3-7 may include two first sliders 3-7. The two groups of first sliders 3-7 are used in conjunction with the two first linear guides 3-5. A first mounting plate 3-2 for assembling the endoscope clamping mechanism 4 is provided on the upper surface of the second bottom plate 3-1-1. In this embodiment, two first mounting plates 3-2 are provided, which are disposed on the left and right sides of the third through hole 3-1-3. Each first mounting plate 3-2 is disposed along the front-to-back direction so as to polish the front optical fibers of the two endoscopes at the same time to improve the polishing efficiency.
[0035] The slide base 3-1 can reciprocate along the first linear guide rail 3-5 under the action of the centrifugal crank slider mechanism 3-3. Specifically, the centrifugal crank slider mechanism 3-3 includes a slide motor 3-6 mounted on the table 1-4. The slide motor 3-6 is an adjustable speed motor to control the moving speed of the slide base 3-1. A balance wheel 3-3-1 is fixed on the output shaft of the slide motor 3-6, and a first connecting shaft 3-3-6 is fixed on the balance wheel 3-3-1. When the slide motor 3-6 is driven to move, the first connecting shaft 3-3-6 on the balance wheel 3-3-1 makes eccentric motion, and a first fixed plate 3-3-5 is fixed on the second base plate 3-1-1. A fixed shaft 3-3-4 is provided on the first fixed plate 3-3-5. The fixed shaft 3-3-4 is connected to one end of a stud bolt 3-3-3 via a joint bearing 3-3-2, and the first connecting shaft 3-3-6 is connected to the other end of the stud bolt 3-3-3 via another joint bearing 3-3-2. When the slide motor 3-6 is driven to move, the slide base 3-1 reciprocates along the first linear guide rail 3-5. By adjusting the stud bolt 3-3-3, the distance between the two joint bearings 3-3-2 can be adjusted, thereby adjusting the reciprocating motion stroke of the slide base 3-1.
[0036] The centrifugal crank slider mechanism 3-3 may further include a protective cover 3-4, which is disposed on the table 1-4 to prevent water splashes during polishing from splashing onto the centrifugal crank slider mechanism 3-3 and causing rust.
[0037] The endoscope is mounted on the endoscope clamping mechanism 4 so that the front end face of the endoscope is kept parallel to the plane of the grinding disc 2-2, thereby improving the quality of polishing. The endoscope clamping mechanism 4 includes an endoscope fixing mechanism 4-1, an endoscope rotation adjustment mechanism 4-2, an endoscope tilt adjustment mechanism 4-3, and a second fixing plate 4-4, wherein the endoscope rotation adjustment mechanism 4-2 is assembled on the endoscope fixing mechanism 4-1, the endoscope is rotated by the endoscope rotation adjustment mechanism 4-2, so that the front end face of the endoscope is rotated to a desired state, the endoscope adjusted by the endoscope rotation adjustment mechanism 4-2 is fixed by the endoscope fixing mechanism 4-1, the endoscope fixing mechanism 4-1 is slidably connected to the endoscope tilt adjustment mechanism 4-3, and the downward sliding stroke of the endoscope fixing mechanism 4-1 is limited by a limit mechanism. The endoscope tilt adjustment mechanism 4-3 is assembled on the second fixed plate 4-4. The tilt angle of the endoscope is adjusted by the endoscope tilt adjustment mechanism 4-3 so that the front end face of the endoscope remains parallel to the plane of the grinding disc 2-2. The second fixed plate 4-4 is fixed on the first mounting plate 3-2.
[0038] In this embodiment, the endoscope fixing mechanism 4-1 includes a second mounting plate 4-1-1, and a plurality of clamps 4-1-2 are arranged at intervals on one surface of the second mounting plate 4-1-1 for clamping and fixing the endoscope, for example, the clamps 4-1-2 can be quick clamps; a second slider 4-1-3, for example, two sliders, is arranged on the other surface of the second mounting plate 4-1-1, and a second linear guide 4-1-4 used in conjunction with the second slider 4-1-3 is arranged on the endoscope tilt adjustment mechanism 4-3. During the grinding and polishing process, the optical fiber at the front end of the endoscope gradually shortens with the grinding process, and the endoscope fixing mechanism 4-1 can move downward by its own gravity to complete automatic grinding. A limiting mechanism 4-1-5 is also arranged at the lower end of the second linear guide 4-1-4, such as a limiting baffle and a buffer arranged on the limiting baffle, which is used to prevent the metal parts at the front end of the endoscope from touching the polishing surface of the grinding disc 2-2, causing wear of the metal parts at the front end of the endoscope.
[0039] The endoscope rotation adjustment mechanism 4-2 includes a rotating sleeve 4-2-1 and a fixed sleeve 4-2-3. The endoscope is inserted into the rotating sleeve 4-2-1. The rotating sleeve 4-2-1 can be locked with the endoscope by a first adjusting knob 4-2-2 connected to the rotating sleeve 4-2-1 along the radial direction of the rotating sleeve 4-2-1. The outer wall of the rotating sleeve 4-2-1 is connected to the inner wall of the fixed sleeve 4-2-3 via a bearing, and the rotating sleeve 4-2-1 and the fixed sleeve 4-2-3 can be locked by a second adjusting knob 4-2-4 connected to the fixed sleeve 4-2-3 along the radial direction of the fixed sleeve 4-2-3. The fixed sleeve 4-2-3 is fixed to the upper end of the second mounting plate 4-1-1 via a bracket, and the endoscope tube is clamped and fixed by a plurality of clamps 4-1-2. With the above-mentioned structure, after the endoscope is locked with the rotating sleeve 4-2-1, the rotating sleeve 4-2-1 is rotated relative to the fixed sleeve 4-2-3 until the front end surface of the endoscope is rotated to a desired state, and then the rotating sleeve 4-2-1 and the fixed sleeve 4-2-3 are locked by the second adjusting knob 4-2-4. The rotating sleeve 4-2-1 can be further rotated by loosening the second adjusting knob 4-2-4, and the endoscope can be removed by loosening the first adjusting knob 4-2-2.
[0040] The endoscope tilt adjustment mechanism 4-3 includes a support frame 4-3-3 fixed on the second fixing plate 4-4, the support frame 4-3-3 includes two supporting side plates 4-3-3-1 arranged opposite to each other and a supporting bottom plate 4-3-3-3 connected therebetween, a second connecting shaft 4-3-2 is rotatably arranged between the two supporting side plates 4-3-3-1 at one end of the support frame 4-3-3, and two supporting side plates 4-3-3-1 at the other end of the support frame 4-3-3 are provided with accommodating grooves 4-3-3-2, the accommodating grooves 4-3-3-2 are arranged along the horizontal direction, and nuts 4-3-4 are placed between the two accommodating grooves 4-3-3 -2, the nut 4-3-4 can rotate, but basically cannot produce axial displacement of the nut 4-3-4, the lower end of the stud 4-3-5 used in conjunction with the nut 4-3-4 can be accommodated in the light hole 4-4-1 correspondingly set on the supporting base plate 4-3-3-3 and the second fixing plate 4-4, the upper end of the stud 4-3-5 can lift one end of the support plate 4-3-1 with an inclined surface, the other end of the support plate 4-3-1 with an inclined surface is connected to the second connecting shaft 4-3-2, and the second linear guide rail 4-1-4 is arranged on the inclined surface of the support plate 4-3-1 with an inclined surface. When the nut 4-3-4 is rotated, under the action of the stud 4-3-5, the support plate 4-3-1 with the inclined surface is rotated with the second connecting shaft 4-3-2 as the hinge point to adjust the inclination angle of the endoscope so that the front end face of the endoscope remains parallel to the plane of the grinding disc 2-2.
[0041] The control principle of the grinding disc motor 2-7 and the slide motor 3-6 involved in this application is a known theory in the prior art. Fig.13 As shown, the power supply control of the slide motor 3-6 is a self-locking control circuit composed of the "start" and "stop" button switches and the AC contactor K1. The start and stop of the slide motor 3-6 can be realized and maintained by pressing the button momentarily; the speed of the slide motor 3-6 is controlled by the motor speed regulator. The control circuit of the grinding disc motor 2-7 is a real-time control circuit composed of the "turntable" gear switch and the AC contactor K2, which controls the on and off of the power supply of the grinding disc motor 2-7; the power supply of the grinding disc motor 2-7 is provided by the armature excitation power supply, and the motor speed is controlled by feedback from the speed regulating potentiometer. The armature excitation power input power supply is controlled separately by a single-phase circuit breaker. The emergency stop control is composed of the "emergency stop" switch connected in series to the input AC power live wire circuit and the three-phase circuit breaker. In an emergency, the "emergency stop" switch can be pressed to achieve one-button power off of the entire machine, which can ensure the safe operation of the electrical system.
[0042] During specific use, the endoscope is mounted on the endoscope clamping mechanism 4, and the endoscope is driven to reciprocate by the slide mechanism 3. During the movement, the optical fiber at the front end of the endoscope is polished by the grinding disc mechanism 2.
[0043] The device for polishing the optical fiber at the front end of the endoscope involved in the present application has the advantages of stable and reliable polishing process, convenient operation, uniform polishing, high polishing quality, high polishing efficiency, easy maintenance and safe operation.
[0044] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical solution and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.
Claims
1. A device for polishing the optical fiber at the front end of an endoscope, characterized in that: It includes a frame, a grinding disc mechanism, a sliding mechanism, and an endoscope clamping mechanism, wherein the grinding disc mechanism and the sliding mechanism are assembled on the frame, and the endoscope clamping mechanism is fixed on the sliding mechanism. The endoscope clamped by the endoscope clamping mechanism is driven by the sliding mechanism to reciprocate relative to the frame. During the movement, the optical fiber at the front end of the endoscope is polished by the grinding disc mechanism.
2. The device for polishing the optical fiber at the front end of an endoscope according to claim 1, characterized in that: The frame includes a plurality of support columns and a table top arranged at the top of all the support columns. The table top is supported and fixed by the support columns. A detachable guard plate is provided between two adjacent support columns. An adjustable foot pad is provided at the bottom of each support column. A first through hole is provided on the table top for adapting the grinding disc mechanism.
3. The device for polishing the optical fiber at the front end of an endoscope according to claim 2, characterized in that: The grinding disc mechanism includes a crossbeam bracket, which is fixed to the lower surface of the table top, and a grinding disc fixing plate and a grinding disc motor fixing plate are respectively fixed on the crossbeam bracket, and a grinding disc motor is mounted on the grinding disc motor fixing plate, and the grinding disc motor drives a pulley to rotate via a belt, and the pulley is fixed on a rotating shaft, and the rotating shaft is connected to the grinding disc fixing plate via a bearing, and a grinding disc is also fixedly connected to the rotating shaft, and the grinding disc corresponds to the first through hole. When the grinding disc motor is controlled to rotate, the optical fiber at the front end of the endoscope is polished by the rotating grinding disc, and the speed of the grinding disc motor is adjustable.
4. The device for polishing the optical fiber at the front end of an endoscope according to claim 3, characterized in that: The grinding disc mechanism also includes a water trough, which is assembled on the beam bracket. The water trough includes a first bottom plate, a second through hole is provided at the center of the first bottom plate, the rotating shaft passes through the second through hole, a first enclosure is provided at the outer edge of the first bottom plate, and a second enclosure is provided at the edge of the second through hole. An annular groove structure is formed by the first enclosure, the first bottom plate and the second enclosure, which is used to allow the liquid in the polishing process to flow into the water trough, and the height of the top of the first enclosure is greater than the height of the grinding disc position and greater than the height of the top of the second enclosure.
5. The device for polishing the optical fiber at the front end of an endoscope according to claim 3, characterized in that: The slide mechanism includes a slide base, and the slide base includes a second bottom plate, on which a third through hole is provided. During the movement of the slide base, the third through hole corresponds to the first through hole. A first slider is provided on the lower surface of the second bottom plate, and the first slider is used in conjunction with a first linear guide rail provided on the upper surface of the table. A first mounting plate for assembling the endoscope clamping mechanism is provided on the upper surface of the second bottom plate. The slide base can reciprocate along the first linear guide rail under the action of the centring crank slider mechanism.
6. The device for polishing the optical fiber at the front end of an endoscope according to claim 5, characterized in that: The centrifugal crank slider mechanism includes a slide motor mounted on the table surface, the slide motor adopts an adjustable speed motor, a balance wheel is fixed on the output shaft of the slide motor, a first connecting shaft is fixed on the balance wheel, when the slide motor is driven to move, the first connecting shaft on the balance wheel performs eccentric movement, a first fixed plate is fixed on the second bottom plate, a fixed shaft is provided on the first fixed plate, the fixed shaft is connected to one end of the stud bolt via a joint bearing, the first connecting shaft is connected to the other end of the stud bolt via another joint bearing, when the slide motor is driven to move, the slide base performs reciprocating motion along the first linear guide rail, the distance between the two joint bearings can be adjusted by adjusting the stud bolt, and then the reciprocating motion stroke of the slide base can be adjusted.
7. The device for polishing the optical fiber at the front end of an endoscope according to claim 5, characterized in that: The endoscope clamping mechanism includes an endoscope fixing mechanism, an endoscope rotation adjustment mechanism, an endoscope tilt adjustment mechanism and a second fixing plate, wherein the endoscope rotation adjustment mechanism is mounted on the endoscope fixing mechanism, the endoscope is rotated by the endoscope rotation adjustment mechanism so that the front end face of the endoscope is rotated to a desired state, the endoscope adjusted by the endoscope rotation adjustment mechanism is fixed by the endoscope fixing mechanism, the endoscope fixing mechanism is slidably connected to the endoscope tilt adjustment mechanism, and the downward sliding stroke of the endoscope fixing mechanism is limited by a limiting mechanism; the endoscope tilt adjustment mechanism is mounted on the second fixing plate, the tilt angle of the endoscope is adjusted by the endoscope tilt adjustment mechanism so that the front end face of the endoscope remains parallel to the plane of the grinding disc, and the second fixing plate is fixed to the first mounting plate.
8. The device for polishing the optical fiber at the front end of an endoscope according to claim 7, characterized in that: The endoscope fixing mechanism includes a second mounting plate, on one surface of which a plurality of clamping members are arranged at intervals for clamping and fixing the endoscope, and on the other surface of the second mounting plate a second slider is provided, and a second linear guide rail used in conjunction with the second slider is provided on the endoscope tilt adjustment mechanism, and the limiting mechanism is also provided at the lower end of the second linear guide rail.
9. The device for polishing the optical fiber at the front end of an endoscope according to claim 8, characterized in that: The endoscope rotation adjustment mechanism includes a rotating sleeve and a fixed sleeve. The endoscope is inserted into the rotating sleeve. The rotating sleeve and the endoscope can be locked by a first adjusting knob connected to the rotating sleeve along the radial direction of the rotating sleeve. The outer wall of the rotating sleeve is connected to the inner wall of the fixed sleeve via a bearing, and the rotating sleeve and the fixed sleeve can be locked by a second adjusting knob connected to the fixed sleeve along the radial direction of the fixed sleeve. The fixed sleeve is fixed to the upper end of the second mounting plate via a bracket, and the mirror tube of the endoscope is clamped and fixed by the multiple clamps.
10. The device for polishing the optical fiber at the front end of an endoscope according to claim 9, characterized in that: The endoscope tilt adjustment mechanism includes a support frame fixed on the second fixed plate, the support frame includes two supporting side plates arranged opposite to each other and a supporting bottom plate connected therebetween, a second connecting shaft is rotatably arranged between the two supporting side plates at one end of the support frame, and two supporting side plates at the other end of the support frame are provided with accommodating grooves, the accommodating grooves are arranged along the horizontal direction, nuts are placed at the two accommodating grooves, the nut can rotate but basically cannot generate displacement along the axial direction of the nut, the lower end of the stud used in conjunction with the nut can be accommodated in the light holes correspondingly arranged on the supporting bottom plate and the second fixed plate, the upper end of the stud can lift up one end of the support plate with an inclined surface, the other end of the support plate with an inclined surface is connected to the second connecting shaft, and the second linear guide is arranged at the inclined surface of the support plate with an inclined surface; when the nut is rotated, under the action of the stud, the support plate with an inclined surface rotates with the second connecting shaft as a hinge point to achieve the adjustment of the inclination angle of the endoscope, so that the front end face of the endoscope remains parallel to the plane of the grinding disc.