阅读说明：本技术 一种医疗内窥镜照明用无胶玻璃光纤束制备装置及方法 (Device and method for preparing glue-free glass optical fiber bundle for medical endoscope illumination ) 是由 冯震 岳叶 徐悟生 朱逢锐 杨春晖 于 2021-02-08 设计创作，主要内容包括：本发明公开了一种医疗内窥镜照明用无胶玻璃光纤束制备装置,包括操作平台,操作平台上设置有竖向支架,竖向支架上设置有升降丝杆组件和六角传动组件,六角传动组件包括分体设置的第一六角柱和第二六角柱,丝杆升降组件上设置有升降底座,升降底座下方设置有固定底座,升降底座上设置有上皮带传动组件和上钻头夹,上钻头夹对应的固定底座上设置有下钻头夹,下钻头夹通过下皮带传动组件与第二六角柱连接,第一六角柱和第二六角柱之间还设置有同步套,同步套与升降组件连接,升降组件带动同步套轴线移动,第二六角柱与固定底座之间还设置有刹车器,还公开一种通过扭转方式制备光纤束的方法。本发明结构简便,能够高效的辅助生产光纤束。(The invention discloses a glue-free glass fiber bundle preparation device for medical endoscope illumination, which comprises an operation platform, wherein a vertical support is arranged on the operation platform, a lifting screw rod assembly and a hexagonal transmission assembly are arranged on the vertical support, the hexagonal transmission assembly comprises a first hexagonal column and a second hexagonal column which are arranged in a split mode, a lifting base is arranged on the screw rod lifting assembly, a fixed base is arranged below the lifting base, an upper belt transmission assembly and an upper drill bit clamp are arranged on the lifting base, a lower drill bit clamp is arranged on the fixed base corresponding to the upper drill bit clamp and connected with the second hexagonal column through the lower belt transmission assembly, a synchronous sleeve is further arranged between the first hexagonal column and the second hexagonal column and connected with the lifting assembly, the lifting assembly drives the synchronous sleeve to move along the axis, a brake is further arranged between the second hexagonal column and the fixed base, and a method for preparing a fiber bundle in a torsion mode is further disclosed. The invention has simple structure and can efficiently and auxiliarily produce the optical fiber bundle.)

1. A glue-free glass fiber bundle preparation device for medical endoscope illumination is characterized by comprising an operation platform, wherein a vertical support is arranged on the operation platform, a lifting motor and a rotating motor are arranged at the top of the vertical support, a lifting lead screw assembly connected with the lifting motor is arranged on the surface of the vertical support, the rotating motor is connected with a first hexagonal column, a lifting base is arranged on the lead screw lifting assembly, a fixed base is arranged below the lifting base, an upper driving belt pulley and an upper driven belt pulley are arranged on the lifting base, bearings are arranged between the upper driving belt pulley and the lifting base and between the upper driven belt pulley and the lifting base, the upper driving belt pulley is sleeved on the first hexagonal column through a hexagonal cavity arranged inside the upper driving belt pulley, and the upper driving belt pulley is connected with the upper driven belt pulley through an upper transmission belt, go up the driven pulley below and still be provided with the drill bit and press from both sides, go up driven pulley and go up the drill bit and press from both sides synchronous rotation and link up the setting, it is provided with down the drill bit and press from both sides to go up on the unable adjustment base that the drill bit pressed from both sides to correspond, down the drill bit presss from both sides through driven pulley and lower drive belt and drive pulley connection down, the drive pulley cover is established and is fixed on second hexagonal post down, first hexagonal post and second hexagonal post are located the same axis, still be provided with synchronous cover between first hexagonal post and the second hexagonal post, synchronous cover is connected with lift arm component, and lift arm component drives synchronous cover axis and removes, still be provided with the brake between second hexagonal post and the unable adjustment base.

2. The device for preparing a non-glue glass fiber bundle for medical endoscope illumination according to claim 1, wherein the synchronous sleeve comprises a supporting plate, an upper sleeve and a lower sleeve which are arranged on two surfaces of the supporting plate, inner hexagonal walls are arranged in the upper sleeve and the lower sleeve, the upper sleeve is sleeved on the first hexagonal column, a compression spring is further arranged between the inner bottom of the upper sleeve and the end of the first hexagonal column, the lower sleeve is used for being sleeved on the second hexagonal column, the lifting arm assembly comprises a lifting cylinder, the lifting cylinder is connected with a supporting arm, an avoiding groove is arranged on the supporting arm, and the supporting arm is arranged below the supporting plate.

3. The apparatus for preparing a binderless glass optical fiber bundle for medical endoscope illumination according to claim 2, wherein the holder arm is further provided with at least two ball transfer units.

4. The apparatus for preparing a binderless glass optical fiber bundle for medical endoscope illumination according to claim 2, wherein the first hexagonal prism is fixed to the vertical support by a support plate.

5. The apparatus according to claim 1, wherein a pneumatic rotary joint is provided above the upper driven pulley, a driven tube is provided between the pneumatic rotary joint and the upper driven pulley, and the pneumatic rotary joint is mounted on the vertical support via a fixing bracket.

6. The apparatus according to claim 5, wherein the gas rotary joint and the upper driven pulley are provided with hollow plugs, and the hollow plugs are inserted into and fixed to both ends of the driven tube.

7. The apparatus according to claim 6, wherein the hollow plug comprises a metal ring, an annular rubber sleeve is sleeved on the outer circumference of the metal ring, and an anti-slip protrusion is provided on the outer surface of the annular rubber sleeve.

8. The apparatus according to claim 1, wherein a melting holder is provided on the operation platform, the melting holder is used for fixing a flame gun, the flame gun is connected to an oxyhydrogen flame machine, and the oxyhydrogen flame machine is fixedly provided on the operation platform.

9. A method for preparing a glue-free glass optical fiber bundle for medical endoscope illumination, which is characterized by comprising the preparation device of any one of claims 1 to 8, and comprises the following steps:

step 1) preparing materials; selecting the number of optical fiber filaments according to the number of the inner cores, then burning one end of each optical fiber filament by using an alcohol lamp to remove coating, putting the burnt optical fiber filaments into a beaker filled with sulfuric acid to soak for removing impurities, washing the sulfuric acid soaked optical fiber by using clear water, drying the optical fiber by using an air gun, and finally wiping the optical fiber filaments by using clean paper dipped with alcohol for later use; then putting the quartz tube into an ultrasonic machine containing alcohol for cleaning, and then blowing and drying by using an air gun for later use;

step 2) tube penetration, namely penetrating the coating-removed end part of the standby optical fiber into a standby quartz tube; firstly, abutting the coating-removed end part of the optical fiber on a plane plate for end leveling, then binding the optical fiber with a thin wire to ensure tight binding, then penetrating the coating-removed end part into a quartz tube at least to the other end part, and then removing the thin wire;

step 3), preparing for melting; fixing two ends of the quartz tube after tube penetration on an upper drill bit clamp and a lower drill bit clamp of a preparation device, starting a rotating motor, synchronously rotating the upper drill bit clamp and the lower drill bit clamp at a constant speed, starting an oxyhydrogen machine, and igniting a flame gun by using an igniter for standby;

step 4), melting; aligning the flame of a flame gun to the lower end of the sleeve in a straight or inclined mode, keeping a proper distance, uniformly preheating the middle lower part of the quartz tube to quickly discharge water vapor, continuously fusing the quartz tube by using external flame after preheating is finished, fixing a lower drill clamp after the middle part of the quartz tube is softened, rotating an upper drill clamp for a certain angle to enable the quartz tube to be twisted and deformed, continuously keeping the temperature for at least 5 minutes after deformation is finished, and slowly cooling to room temperature until the stress is completely released;

and 6) cutting off the torsional deformation part from the middle, and then grinding and polishing the cut end face to obtain a finished product.

10. The method for producing a binderless glass optical fiber bundle for medical endoscope illumination according to claim 9, wherein the flame gun is heated at a temperature of at least 600 ℃; the rotation angle of the upper drill bit clamp is 10-15 degrees.

Technical Field

The invention relates to the technical field of preparation of fused optical fibers, in particular to a device and a method for preparing a glue-free glass optical fiber bundle for medical endoscope illumination.

Background

The medical endoscope system usually needs a glass fiber bundle to realize the conduction of illumination light, and because the temperature of the light emitting position of a light source is extremely high, the existing fiber bundle has low temperature resistance in the using process, and the problem of cauterization failure often occurs, and the foreign high-end fiber bundle is often needed to be purchased for replacement.

The high-end optical fiber bundle is generally a fused optical fiber bundle, the fused optical fiber bundle is composed of a bundle of very thin (the diameter is about 100-600 μm) quartz fiber filaments, a transmission end is formed by fusing with an externally sleeved glass tube, and then the glass optical fiber bundle is protected by using a metal piece outside to obtain a finished product joint.

The quality of a melting end of an optical fiber bundle directly influences the use quality, a finished product prepared by the existing melting optical fiber bundle has more impurities and bubbles, the melting effect is poor, and the preparation can be completed only by the aid of substances such as auxiliary glue and the like, the factors are easy to damage optical fibers when the factors are used in a high-energy environment, and the research on the melting optical fiber bundle is mainly given by foreign special optical fiber suppliers, so that a novel high-quality preparation solution is provided by I and a matched preparation device is provided at the same time.

Disclosure of Invention

The invention aims to solve the technical problem of providing a device and a method for preparing a glue-free glass optical fiber bundle for medical endoscope illumination, which have simple and convenient structure and can efficiently and auxiliarily produce the optical fiber bundle.

In order to solve the technical problems, the invention provides a glue-free glass optical fiber bundle preparation device for medical endoscope illumination, which comprises an operation platform, wherein a vertical support is arranged on the operation platform, a lifting motor and a rotating motor are arranged at the top of the vertical support, a lifting screw rod assembly connected with the lifting motor is arranged on the surface of the vertical support, the rotating motor is connected with a first hexagonal column, a lifting base is arranged on the screw rod lifting assembly, a fixed base is arranged below the lifting base, an upper driving belt pulley and an upper driven belt pulley are arranged on the lifting base, bearings are arranged between the upper driving belt pulley and the lifting base and between the upper driven belt pulley and the lifting base, the upper driving belt pulley is sleeved on the first hexagonal column through a hexagonal cavity arranged inside the upper driving belt pulley, and the upper driven belt pulley is connected with the upper driven belt pulley through an upper transmission belt, go up the driven pulley below and still be provided with the drill bit and press from both sides, go up driven pulley and go up the drill bit and press from both sides synchronous rotation and link up the setting, it is provided with down the drill bit and press from both sides to go up on the unable adjustment base that the drill bit pressed from both sides to correspond, down the drill bit presss from both sides through driven pulley and lower drive belt and drive pulley connection down, the drive pulley cover is established and is fixed on second hexagonal post down, first hexagonal post and second hexagonal post are located the same axis, still be provided with synchronous cover between first hexagonal post and the second hexagonal post, synchronous cover is connected with lift arm component, and lift arm component drives synchronous cover axis and removes, still be provided with the brake between second hexagonal post and the unable adjustment base.

Further, synchronous cover includes the layer board and sets up sleeve and lower sleeve on two surfaces of layer board, it all is provided with interior hexagonal inner wall in sleeve and the lower sleeve to go up, it establishes on first hexagonal post to go up the sleeve cover, it still is provided with compression spring to go up between bottom and the first hexagonal post tip in the sleeve, the sleeve is used for the cover to establish down on the second hexagonal post, lift arm subassembly includes the lift cylinder, the lift cylinder is connected with the trailing arm, be provided with on the trailing arm and dodge the groove, the trailing arm sets up in the layer board below.

Furthermore, at least two universal balls are arranged on the supporting arm.

Further, the first hexagonal column is fixed on the vertical support through the support plate.

Further, a gas rotary joint is arranged above the upper driven pulley, a driven pipe is arranged between the gas rotary joint and the upper driven pulley, and the gas rotary joint is installed on the vertical support through a fixing frame.

Furthermore, the gas rotary joint and the upper driven belt pulley are both provided with hollow plugs, and the two hollow plugs are matched and plugged into the two ends of the driven pipe and fixed.

Further, the cavity chock plug includes the becket, the cover is equipped with annular rubber sleeve on the becket periphery, annular rubber sleeve surface is provided with anti-skidding convex part.

Further, a melting support is arranged on the operating platform and used for fixing a flame gun, the flame gun is connected with an oxyhydrogen flame machine, and the oxyhydrogen flame machine is fixedly arranged on the operating platform.

A preparation method of a glue-free glass optical fiber bundle for medical endoscope illumination comprises any one of the preparation devices, and comprises the following specific steps:

step 1) preparing materials; selecting the number of optical fiber filaments according to the number of the inner cores, then burning one end of each optical fiber filament by using an alcohol lamp to remove coating, putting the burnt optical fiber filaments into a beaker filled with sulfuric acid to soak for removing impurities, washing the sulfuric acid soaked optical fiber by using clear water, drying the optical fiber by using an air gun, and finally wiping the optical fiber filaments by using clean paper dipped with alcohol for later use; then putting the quartz tube into an ultrasonic machine containing alcohol for cleaning, and then blowing and drying by using an air gun for later use;

step 2) tube penetration, namely penetrating the coating-removed end part of the standby optical fiber into a standby quartz tube; firstly, abutting the coating-removed end part of the optical fiber on a plane plate for end leveling, then binding the optical fiber with a thin wire to ensure tight binding, then penetrating the coating-removed end part into a quartz tube at least to the other end part, and then removing the thin wire;

step 3), preparing for melting; fixing two ends of the quartz tube after tube penetration on an upper drill bit clamp and a lower drill bit clamp of a preparation device, starting a rotating motor, synchronously rotating the upper drill bit clamp and the lower drill bit clamp at a constant speed, starting an oxyhydrogen machine, and igniting a flame gun by using an igniter for standby;

step 4), melting; aligning the flame of a flame gun to the lower end of the sleeve in a straight or inclined mode, keeping a proper distance, uniformly preheating the middle lower part of the quartz tube to quickly discharge water vapor, continuously fusing the quartz tube by using external flame after preheating is finished, fixing a lower drill clamp after the middle part of the quartz tube is softened, rotating an upper drill clamp for a certain angle to enable the quartz tube to be twisted and deformed, continuously keeping the temperature for at least 5 minutes after deformation is finished, and slowly cooling to room temperature until the stress is completely released;

and 6) cutting off the torsional deformation part from the middle, and then grinding and polishing the cut end face to obtain a finished product.

Further, the heating temperature of the flame gun is at least 600 ℃; the rotation angle of the upper drill bit clamp is 10-15 degrees.

The invention has the beneficial effects that:

1. first hexagonal column and second hexagonal column are connected through synchronous cover, and synchronous cover can remove for first hexagonal column and second hexagonal column can carry out synchronization action and asynchronous motion, thereby even heating and torsional process rotate when satisfying the melting, simple structure, and the operation is stable.

2. Adopt vertical arrangement's mode to carry out the melting, can not produce the flagging problem that leads to because of the dead weight after the melting, effectively improve melting quality, the rotating electrical machines is fixed to be set up on vertical support to bearing weight greatly reduced on guaranteeing lifting base, thereby it is stable to make the lift remove, also reducing wear, improves life.

3. Go up the drill bit clamp can be fast and reliable centre gripping sleeve pipe, the simple operation, and low in preparation cost to well centering is effectual.

4. The preparation method of the invention does not use any epoxy resin or adhesive in the preparation process, and is prepared by directly burning and melting the end, and the sleeve and the optical fiber are combined more tightly by adopting a twisting mode in the melting process, and the optical fiber arrangement can be in a standard honeycomb structure, so the preparation method can be suitable for the temperature range up to 500 ℃, and can meet the requirement of the use in the environment of a medical endoscope light source.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a portion of the synchronizing sleeve of the present invention;

FIG. 3 is a partial cross-sectional schematic view of the synchronizing sleeve of the present invention;

FIG. 4 is a schematic cross-sectional view of a vacuum portion of the present invention;

FIG. 5 is a schematic view of a fusion brace constructed in accordance with an embodiment of the present invention;

FIG. 6 is a schematic view of a rapid reaction cartridge according to the present invention;

fig. 7 is a schematic structural view of the elastic sheet according to the present invention.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Referring to fig. 1, an embodiment of the device for preparing a glueless glass fiber bundle for medical endoscope illumination of the present invention comprises an operation platform 1, wherein a vertical support 2 is arranged on the operation platform, a lifting motor 3 and a rotating motor 4 are arranged at the top of the vertical support, a lifting screw rod assembly 5 connected with the lifting motor is arranged on the surface of the vertical support, the rotating motor is connected with a first hexagonal column 6, a lifting base 7 is arranged on the screw rod lifting assembly, a fixed base 8 is arranged below the lifting base, an upper driving pulley 9 and an upper driven pulley 10 are arranged on the lifting base, bearings are arranged between the upper driving pulley and the lifting base and between the upper driven pulley and the lifting base, the upper driving pulley is sleeved on the first hexagonal column through a hexagonal cavity arranged inside, and the upper driving pulley is connected with the upper driven pulley through an upper transmission belt, the upper driven belt pulley is further provided with an upper drill bit clamp 11 below, the upper driven belt pulley and the upper drill bit clamp synchronously rotate and are arranged in a penetrating mode, a lower drill bit clamp 12 is arranged on a fixing base corresponding to the upper drill bit clamp, the lower drill bit clamp is connected with a lower driving belt pulley 14 through a lower driven belt pulley 13 and a lower driving belt, the lower driving belt pulley is sleeved and fixed on a second hexagonal column 15, the first hexagonal column and the second hexagonal column are located on the same axis, a synchronizing sleeve 16 is further arranged between the first hexagonal column and the second hexagonal column and is connected with a lifting arm assembly 17, the lifting arm assembly drives the synchronizing sleeve to move along the axis, and a brake 18 is further arranged between the second hexagonal column and the fixing base.

The upper driving belt pulley, the upper transmission belt and the upper driven belt pulley are matched to form an upper belt transmission assembly, the upper belt transmission assembly can be driven by the lifting base to lift and move, due to the design of the first hexagonal column, the upper driving belt pulley cannot interfere with the first hexagonal column during lifting, the upper belt transmission assembly can directly lift and move, the lower driving belt pulley, the lower transmission belt and the lower driven belt pulley are matched to form a lower belt transmission assembly, the lower belt transmission assembly does not need to lift and move, the first hexagonal column and the second hexagonal column are sleeved through a synchronous sleeve to achieve a synchronous rotating effect, when the device is used, the lifting motor drives the screw rod lifting assembly to descend, the lifting base is driven by the screw rod lifting assembly to descend, an optical fiber wire penetrates into the sleeve pipe after descending in place, then the penetrated whole body is transferred from the center of the driven belt pulley until the penetrating through the upper drill bit clamp, and then continuously penetrates into, then the upper drill clamp and the lower drill clamp are adjusted to clamp the sleeve to realize fixation, the middle part of the sleeve is heated and melted by an oxyhydrogen flame gun after fixation, the first hexagonal column is driven to rotate by a rotating motor while heating, the first hexagonal column drives a synchronous sleeve to rotate, the synchronous sleeve drives a second hexagonal column to rotate, thereby realizing the synchronous rotation of the first hexagonal column and the second hexagonal column, the first hexagonal column drives an upper belt transmission component to drive the upper drill clamp to rotate, the second hexagonal column drives a lower belt transmission component to rotate, namely the lower drill clamp is driven to rotate, because of synchronous rotation, the upper drill clamp and the lower drill clamp are also synchronous rotation effect, the sleeve is driven to synchronously heat by synchronous rotation, when torsion action is needed, the lifting arm component drives the synchronous sleeve to move upwards, when the synchronous sleeve is separated from the second hexagonal column, the first hexagonal column rotates, namely the second hexagonal column cannot be driven to rotate, after the second hexagonal column is stopped by the brake, the rotating motor drives the first hexagonal column to rotate, the upper drill bit clamp is driven to rotate, and one end of the sleeve rotates and the other end of the sleeve does not rotate, so that the twisting effect is achieved.

The synchronous sleeve comprises a supporting plate 19, an upper sleeve 20 and a lower sleeve 21 which are arranged on two surfaces of the supporting plate, inner hexagonal inner walls are arranged in the upper sleeve and the lower sleeve, the upper sleeve is sleeved on a first hexagonal column, a compression spring 22 is further arranged between the bottom of the upper sleeve and the end of the first hexagonal column, the lower sleeve is used for being sleeved on a second hexagonal column, the lifting arm assembly comprises a lifting cylinder 23, the lifting cylinder is connected with a supporting arm 24, a avoiding groove is formed in the supporting arm, and the supporting arm is arranged below the supporting plate. The lifting cylinder drives the supporting arm to move up and down, when the supporting arm ascends, the supporting arm can drive the supporting plate to ascend and move, the supporting plate drives the upper sleeve and the lower sleeve to ascend, finally the lower sleeve is separated from the second hexagonal column, the first hexagonal column and the second hexagonal column cannot synchronously rotate, as shown in figure 3, the first hexagonal column rotates to drive the upper driving belt pulley to rotate but cannot drive the lower driving belt pulley to rotate, thereby realizing the twisting effect, and of course, the brake is also assisted, the brake comprises a friction block 181 fixed on the second hexagonal column and a brake cylinder 182 on the fixed base, an arc-shaped brake block 183 is arranged on the brake cylinder, the brake cylinder acts while separating, pushes the arc brake block to be abutted with the friction block, so that the second hexagonal column can not rotate, and when the second hexagonal column can not rotate, the lower drill bit clamp connected with the second hexagonal column can not rotate. The torsion effect is effectively simulated through a rotating structure mode and another non-rotating structure mode, and the effect of the preparation process is met. In order to ensure the rotating effect, at least two universal balls 25 are arranged on the support arm, the rotating friction force is effectively reduced, the rotating stability and the rotating precision are ensured, the detection sensor 26 is also arranged on the support arm, when the first hexagonal column and the second hexagonal column need to rotate synchronously, the synchronous sleeve needs to reset, whether the synchronous sleeve completes the resetting is sensed by the detection sensor, the synchronous sleeve is convenient and reliable, when the resetting is completed, the lifting cylinder acts to enable the support arm to descend, the support plate does not have the support of the support arm, the compressed spring can drive the synchronous sleeve to move downwards, when the synchronous sleeve is opposite to the position of the second hexagonal column, the synchronous sleeve can fall down and be sleeved on the second hexagonal column, when the position is staggered, the synchronous sleeve cannot fall down, the detection sensor cannot detect the support plate, then the first hexagonal column rotates to drive the synchronous sleeve to rotate, the synchronous sleeve is matched with the position of the second hexagonal column, and, the falling can be detected by the detection sensor. First hexagonal post passes through the backup pad to be fixed on vertical support, guarantees the stability in use of first hexagonal post.

In order to improve the preparation quality, the vacuum adsorption is carried out in the sleeve in the melting process, and the specific structure is as follows: go up the driven pulley top and be provided with gaseous rotary joint 27, be provided with driven pipe 28 between gaseous rotary joint and the last driven pulley, gaseous rotary joint passes through the mount and installs on vertical support, establishes through driven pipe cover and carries out the evacuation on melting fiber bundle, and driven pipe rotates in the lump when fiber bundle pivoted, safe and reliable to driven pipe can also protect stretching out sheathed tube optic fibre silk, improves the finished product yield after the preparation. Specifically, all be provided with cavity chock plug 29 on gaseous rotary joint and the last driven pulley, two cavity chock plugs cooperation are filled in from the driving pipe both ends in and are fixed, and the cavity chock plug includes becket 30, and the cover is equipped with annular rubber sleeve 31 on the becket periphery, and annular rubber sleeve surface is provided with anti-skidding convex part, and annular rubber sleeve then guarantees the stability of sealed effect, and annular rubber sleeve surface is provided with anti-skidding convex part, reaches fixed firm effect in sealed, can rotate in step. During specific installation, after a sleeve is clamped by a drill chuck, a driven pipe is firstly sleeved on an optical fiber strand, then the lower end part of the driven pipe is inserted into the corresponding hollow plug head to realize primary fixation, then the hollow plug head corresponding to the upper end part of the driven pipe is aligned to the lifting base in the lifting process, the upper end part of the driven pipe is inserted into the corresponding hollow plug head through the thrust generated when the lifting base is lifted, then the lifting is stopped, and the size of the driven pipe is determined according to the prepared length and the melting position.

Be provided with melting support 32 on the operation platform, the melting support is used for fixed flame gun, flame gun is connected with oxyhydrogen flame machine, oxyhydrogen flame machine is fixed to be set up on operation platform, still be connected with the baffle through the hinge on the vertical support side, when carrying out the flame gun melting, accident's emergence appears easily in the high temperature, consequently can block the protection on flame gun sprays the direction through the baffle, and the hinge can guarantee that the baffle can remove, not in the way when maintenance and installation sleeve.

In an embodiment, as shown in fig. 5, for better auxiliary preparation, a melting support convenient to adjust is further provided, the melting support includes a switch-type magnetic base 31, a manual two-axis moving platform 32 is arranged on the switch-type magnetic base, a front fine-tuning screw 33, a rear fine-tuning screw 33, a left fine-tuning screw 34 and a right fine-tuning screw 34 are arranged on the manual two-axis moving platform, a micro elevator 35 is further arranged at the top of the manual two-axis moving platform, the micro elevator includes a bottom plate 36 and a top plate 37 which are arranged in parallel, a lifting guide module 38 and a lifting fine-tuning screw 39 are arranged between the bottom plate and the top plate, a clamping base 310 is arranged on the surface of the top plate, a horizontal clamping through hole 311 is formed in the clamping base, a spiral pressing knob 312 is arranged at the. During the use, directly place on-off magnetic base on the platform, then open the switch, make on-off magnetic base firmly fixed, guarantee that superstructure can not rock, stretch into horizontal centre gripping through-hole with the flame rifle afterwards, rotate the spiral and push down the knob, make the spiral push down the knob and rotate and compress tightly the flame rifle, thereby realize fixedly, and easy operation is afterwards according to the melting position, to around fine setting screw rod, control fine setting screw rod and lift fine setting screw rod and adjust, also can ignite the back certainly or adjust in the melting process. When the operation is adjusted, the bottom is stably adsorbed, so that the operation is safe and reliable, the falling caused by accidental touch in the melting process can be avoided, the shaking can be avoided during melting, and the preparation quality is improved.

Referring to fig. 5 and 6, as manual operation is adopted for melting, when fire sources are evacuated due to negligence or need to be quickly, a quick reaction mechanism is further arranged to avoid loss caused by misoperation, a quick reaction box 313 is further arranged between the top plate and the clamping base, a supporting footing 314 is arranged at the bottom of the quick reaction box, a rotating column 315 is arranged in the quick reaction box, the top of the rotating column penetrates through the top of the quick reaction box and is connected with the clamping base, the bottom of the rotating column penetrates through the bottom of the quick reaction box and is connected with a limiting bottom plate 316, a torsion spring is further arranged between the rotating column and the inside of the quick reaction box, a torsion limiting column 317 is arranged on the surface of the rotating column, a rotation limiting groove 318 is arranged on the surface of the quick reaction box corresponding to the torsion limiting column, the torsion limiting column is arranged in the rotation limiting groove to limit the rotation angle of the rotating, An oblique ramp 320 and a lower ramp 321. When the fire source is removed, the spiral pressing knob is directly slapped, the spiral pressing knob extrudes the clamping base to move downwards, namely the rotary column moves downwards, the torsion limiting column is driven to move downwards to be separated from the upper limiting groove, the torsion force of the torsion spring is released due to the fact that the torsion limiting column is not limited by the side wall of the upper limiting groove, the rotary column rotates, the torsion limiting column is driven to rotate to move into the inclined slideway and the lower slideway and then stops moving, namely a certain angle is rotated, and the fire source is effectively removed; the operation is simple, the reaction can be quickly realized, the trigger position is positioned at the top, the operation is convenient, and the evacuation time effectiveness is greatly shortened.

Referring to fig. 7, in order to avoid accidental touch to cause the fire source to be removed, the elastic sheet 322 is further arranged in the rapid reaction box, the setting direction of the elastic sheet is consistent with the inclined direction of the inclined slide way and is positioned below the torsion limiting column, when the elastic sheet is touched by mistake and is pressed down, the elastic sheet provides a pressing-down counter-force, the pressing-down pressure is not large when the elastic sheet is touched by mistake, therefore, the elastic sheet is enough to keep the torsion limiting column in the upper limiting groove without being separated, when the pressing-down pressure disappears when the elastic sheet is touched by mistake, the torsion limiting column can be extruded by the elastic sheet and reset to the upper limiting groove. When the lower pressure is continuously applied and pressed downwards to form a pressure larger than the upper limiting groove, the torsion limiting column is separated from the upper limiting groove and enters the inclined slideway, at the moment, the torsion limiting column is driven by the torsion spring to rotate, meanwhile, the elastic sheet has elasticity, the torsion limiting column can be pushed towards the inclined slideway, the effect of strengthening rotation is formed, and the evacuation effect is improved. Therefore, the elastic sheet can not only keep the torsion limiting column from mistakenly touching and sliding, but also can be moved in an auxiliary manner after unlocking.

Therefore, the switch type magnetic base of the melting support has stronger attraction and stable and reliable fixation, has the effect of convenient disassembly compared with the magnet, and can be directly turned off without pulling out the magnet forcibly in the moving process; the coarse adjustment can be carried out through the placing form, and then the adjustment can be freely carried out in space through the three fine adjustment screws, so that the adjustment range is small, the precision is high, and the problem that the adjustment range is large and difficult to adjust due to manual wrestling does not exist; the micro-elevator has simple structure and smaller height, and avoids the problem that the whole height is too high to meet the melting height

The invention also discloses a preparation method of the glue-free glass optical fiber bundle for medical endoscope illumination, which adopts the preparation device for processing and comprises the following specific steps:

firstly, preparing materials; selecting the number of optical fiber filaments according to the number of the inner cores, then burning one end of each optical fiber filament by using an alcohol lamp to remove coating, putting the burnt optical fiber filaments into a beaker filled with sulfuric acid to soak for removing impurities, washing the sulfuric acid soaked optical fiber by using clear water, drying the optical fiber by using an air gun, and finally wiping the optical fiber filaments by using clean paper dipped with alcohol for later use; then putting the quartz tube into an ultrasonic machine containing alcohol for cleaning, and then blowing and drying by using an air gun for later use;

then, the tube is penetrated, and the uncoated end part of the standby optical fiber filament is penetrated into the standby quartz tube; firstly, the coating-removed end part of the optical fiber is abutted against a plane plate to perform end leveling, then the optical fiber is bound by a thin wire to ensure tight binding, then the coating-removed end part penetrates into a quartz tube and at least reaches the other end part, and can also stretch out naturally, but the stretching length is not easy to overlong, and then the thin wire is dismantled;

then carrying out melting preparation; fixing two ends of the quartz tube after tube penetration on an upper drill bit clamp and a lower drill bit clamp of a preparation device, starting a rotating motor, synchronously rotating the upper drill bit clamp and the lower drill bit clamp at a constant speed, starting an oxyhydrogen machine, and igniting a flame gun by using an igniter for standby;

melting after preparation; aligning the flame of a flame gun to the lower end of the sleeve in a straight or inclined mode, keeping a proper distance, uniformly preheating the middle lower part of the quartz tube to quickly discharge water vapor, continuously fusing the quartz tube by using external flame at least at 600 ℃ after preheating is finished, fixing a lower drill clamp after the middle part of the quartz tube is softened, rotating an upper drill clamp for 10-15 ℃ to enable the quartz tube to be twisted and deformed, continuously keeping the temperature for at least 5 minutes after deformation is finished, and slowly cooling to room temperature until the stress is completely released; the torsional deformation can increase the effect of the combination degree after melting, and the torsional extrusion force forces the quartz tube to be tightened inwards, so that the wrapping performance is better, the optical fiber filaments can be completely fused together, the end face of a single optical fiber is deformed into a hexagonal shape, and the structure is stable and reliable.

And finally, cutting off the torsional deformation part from the middle, and grinding and polishing the cut end face to obtain a finished product.

During the experimental procedures of the above protocol, it was found that the main factors of the quality of the preparation had several problems: the first contributing factor is the fiber cleanliness problem. Before the experiment, an alcohol lamp is used for burning off an optical fiber coating layer, and then clean paper is used for dipping alcohol for wiping, but a plurality of bubbles are generated in the burning and melting process. Considering that part of the coating layer is not completely burnt off in the optical fiber coating process, and then the coating layer is not wiped off by wiping the coating layer with clean paper with alcohol, but the coating layer can not be observed by human eyes, so the coating layer is soaked in sulfuric acid after the coating layer is burnt with alcohol. Because the optical fiber coating layer is a high polymer material, the coating layer can be quickly oxidized and decomposed by soaking the optical fiber coating layer in concentrated sulfuric acid, and finally the purpose of thoroughly removing the coating layer is achieved. Therefore, after the optical fiber is burnt off by an alcohol lamp and coated, the optical fiber is soaked in sulfuric acid for about 3min, then is washed by clean water, is wiped by clean paper soaked in alcohol, and finally is ready for use after being threaded through a pipe.

The second factor is the fire head size problem. The oxyhydrogen machine is matched with big and small flame heads with different oxyhydrogen flame volumes. In the experiment, comparative experiments are carried out on the burning and melting conditions of large and small fire heads. The small flame head is firstly used for fusing, bubbles are more, because the flame of the small flame head is relatively gathered, the temperature is high, and the temperature is difficult to control in the process of re-fusing, so that the fiber cladding is fused and exploded due to the overhigh temperature, and the outer quartz tube is fused, so that the bubbles cannot be discharged, and the bubbles are rapidly gathered. And then, the large fire head is used for fusing, the flame of the large fire head is relatively dispersed, the temperature is relatively low and is relatively well controlled, the temperature is optimally between the melting point of the cladding of the optical fiber and the melting point of quartz, and bubbles are obviously reduced in the process of fusing the large fire head.

The third factor is the internal and external flame problem. When the melting experiment is carried out, the inner flame and the outer flame of the flame have great influence on the melting process. In the process of internal flame fusing, the impact force is large, so that the thermal stress and the like of the quartz tube are changed, the thermal shrinkage is not uniform, and more bubbles are fused between the tube and the optical fiber, and the problems of bending and the like exist. When the outer flame is used for fusing, the impact force of the flame is small, and the thermal stress and the like of the quartz tube are hardly influenced, so that the outer flame is selected for fusing, and bubbles are reduced.

In conclusion, the optical fiber bundle prepared by the method has fewer bubbles, high combination degree and an integral and compact arrangement structure, the optical fiber bundle with glue in the common process has a cavity inside, the glue is common epoxy glue, can resist 250 degrees of temperature, can resist high temperature of a light source and is easy to burn out an end face, and the scheme of the optical fiber bundle without glue on the end face can normally transmit emergent light with high temperature, resists the temperature of more than 500 degrees and has long service life.

The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.