Automatic polishing device for optical glued optical filter

Abstract

The invention provides an automatic polishing device for an optical glued optical filter, and relates to the technical field of glued optical filter processing. According to the automatic polishing device for the optical glued optical filter, a positioning cylinder is coaxially arranged at the position, where the optical filter to be polished is placed, of a workpiece disc; a pressurizing mechanism is arranged in the positioning barrel and comprises a positioning frame, a pressurizing barrel, a guide rod, a vacuum suction cup and a piston piece, the positioning frame is in threaded connection with the interior of the positioning barrel, the guide rod is coaxially, hermetically and slidably inserted into the pressurizing barrel, the vacuum suction cup rotationally communicates with the guide rod, and the piston piece is in threaded connection with the pressurizing barrel. The piston piece is coaxially and fixedly connected to the guide rod, the vacuum suction cup adsorbs the optical filter to be polished, the position of the optical filter to be polished on the workpiece disc is fixed in cooperation with the guide rod and the pressurizing barrel, the damage phenomena such as collision between the optical filter to be polished and the workpiece disc in the polishing process are avoided, axial pressure is applied to the optical filter to be polished, and the polishing efficiency is improved. The friction force between the optical filter to be ground and the polishing disc is enhanced, and the grinding efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of glued optical filter processing, and in particular, to an automatic polishing device for optical glued optical filters. Background Art

[0002] In the prior art, during the processing of optical glued filters, their end faces need to be polished to improve the smoothness and flatness of the end faces. Commonly used polishing equipment is a ring polishing machine. However, when the ring polishing machine polishes the filter, the filter is mostly placed in a workpiece disk, and then the combined effects of mechanical friction and chemical corrosion are used to remove tiny unevenness and other defects on the surface of the filter by grinding.

[0003] When the existing ring polishing machine is polishing the filter, the filter is driven by the rotation of the workpiece disk to rotate, and the side wall of the filter and the workpiece disk will collide to cause wear and damage. In addition, there is no external pressure on the upper end of the filter, and only friction is generated between its own weight and the polishing disk of the ring polishing machine, so the polishing work takes a long time. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an automatic polishing device for optically bonded filters, comprising a workbench, a drive system is provided on the workbench, a polishing disc is connected to the rotating end of the drive system, a positioning system coaxial with the polishing disc is fixed to the workbench, a plurality of polishing jigs are evenly distributed on the upper end surface of the polishing disc, a plurality of filters to be polished are placed in the polishing jig, and further comprising: The upper end surface of the polishing disc is coaxially fixed with a pyramid-shaped guide tower; the axis of the positioning system is provided with a liquid infusion tube connected to an external liquid supply system; the polishing fixture includes a workpiece disc and a correction disc, the filter to be polished is placed in the workpiece disc, the workpiece disc is movably placed in the correction disc, and a positioning cylinder is coaxially provided at the position where the filter to be polished is placed on the workpiece disc; a booster mechanism is provided in the positioning cylinder, and the booster mechanism is connected to an external hydraulic device; The boosting mechanism includes a positioning frame, a boosting cylinder, a guide rod, a vacuum suction cup and a piston member. The positioning frame is threadedly connected to the positioning cylinder, the boosting cylinder is coaxially fixed to the positioning frame, the guide rod is coaxially sealed and slidably inserted in the boosting cylinder, the vacuum suction cup is rotatably connected to the guide rod, the piston member is coaxially fixed to the guide rod, and the piston member is seal-slidably connected to the boosting cylinder; the guide rod is connected to the vacuum suction cup, and one end of the guide rod away from the vacuum suction cup is externally connected to a vacuum pumping device; a centering mechanism is provided at one end of the vacuum suction cup and the guide rod that is rotatably connected, and the centering mechanism performs axial positioning of the filter to be polished by rotation.

[0005] Preferably, a plurality of workpiece accommodating holes are distributed on the workpiece disk, the workpiece accommodating holes are used to hold the optical filter to be polished, and the positioning cylinder is coaxially arranged on the outer side of the workpiece accommodating holes.

[0006] Preferably, the positioning frame is hollowed out.

[0007] Preferably, the booster cylinder is arranged with a closed top and an open bottom, and the top of the booster cylinder is connected to a liquid inlet pipe and a liquid outlet pipe respectively, and the liquid inlet pipe and the liquid outlet pipe are respectively connected to an external hydraulic device.

[0008] Preferably, the end of the liquid outlet pipe extending into the booster cylinder is coaxially fixed with a baffle, a positioning spring is sleeved on the liquid outlet pipe, two ends of the positioning spring are respectively abutted against the baffle and the inner top end of the booster cylinder, and a plurality of side through holes are evenly arranged on the side wall of the end of the liquid outlet pipe extending into the booster cylinder.

[0009] Preferably, a connecting shaft is coaxially plugged onto the vacuum suction cup, the connecting shaft is rotatably sleeved on the guide rod, and the connecting shaft is respectively connected to the guide rod and the vacuum suction cup.

[0010] Preferably, a plurality of limiting grooves are evenly arranged circumferentially on the side wall of the connecting shaft.

[0011] Preferably, the centering mechanism includes: a base, a centering plate, a pressure rod and a top driving seat, the base is threadedly sleeved on the connecting shaft; a plurality of centering plates are circumferentially evenly connected to the base, the end of the centering plate away from the connecting shaft is slidably inserted with a centering rod, a slide groove is provided on the centering plate, a centering pin is limitedly slidably connected in the slide groove, and the centering pin is rotatably connected to the base; the pressure rod is provided on the upper side of the centering plate; the top driving seat is slidably sleeved on the connecting shaft, and the pressure rod is rotatably connected to the top driving seat.

[0012] Preferably, one end of the pressure rod is fixedly connected to the centering rod, and the other end of the pressure rod is slidably inserted with a centering shaft, which is fixed to the centering plate, and the centering shaft is rotatably connected to the top driving seat. A return spring is sleeved on the centering shaft, and both ends of the return spring are respectively abutted against the centering plate and the top driving seat.

[0013] Preferably, the top driving seat comprises: a guide ring, a rotating ring and a guide bar, the guide ring is slidably mounted on the connecting shaft; the rotating ring is rotatably connected to the guide ring, and the centering shaft is rotatably connected to the rotating ring; a plurality of guide bars are evenly fixed on the inner wall of the guide ring in the circumferential direction, and the plurality of guide bars are respectively slidably matched with a plurality of limit grooves.

[0014] The beneficial effects of the present invention are: 1. Use the vacuum suction cup to adsorb the filter to be polished, and use the guide rod and the booster cylinder to fix its position on the workpiece disc to avoid collision and other damage between the filter to be polished and the workpiece disc during the polishing process; 2. The axial displacement of the piston in the booster cylinder is used to drive the guide rod to apply axial pressure to the filter to be polished, thereby enhancing the friction between the filter to be polished and the polishing disc and improving the polishing efficiency; 3. When the vacuum suction cup is adsorbing the filter to be polished, the centering mechanism is rotated to make the filter to be polished and the vacuum suction cup coaxial, so as to further avoid contact between the filter to be polished and the workpiece disc during the polishing process; 4. The pyramid-shaped diversion tower is used to make the materials used for grinding more evenly distributed on the polishing disc, which improves the grinding effect to a certain extent.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a schematic diagram of the overall structure of an automatic polishing device for optically bonded filters according to an embodiment of the present application; Figure 2 is a partial structural schematic diagram of an automatic polishing device for optically bonded filters according to an embodiment of the present application; Figure 3 is a schematic diagram of the position between the local structure of the positioning system and the polishing disc according to an embodiment of the present application; Figure 4 According to the embodiment of the present application Figure 4 A is an enlarged schematic diagram; Figure 5 is a structural exploded diagram of a polishing fixture according to an embodiment of the present application; Figure 6 is a schematic diagram of the internal structure of a boosting mechanism according to an embodiment of the present application; Figure 7 is a structural exploded diagram of a pressurizing mechanism and a centering mechanism according to an embodiment of the present application; Figure 8 is a partial structural cross-section of the boosting mechanism according to an embodiment of the present application Figure 1 ; Fig. 9 According to the embodiment of the present application Figure 8 A magnified schematic diagram of B; Fig.10 is a partial structural cross-section of the boosting mechanism according to an embodiment of the present application Figure 2 ; Fig.11 According to the embodiment of the present application Fig.10 A magnified schematic diagram of middle C; Fig.12 is an exploded view of a local structure of a boosting mechanism according to an embodiment of the present application; Fig.13 is a partial structural cross-section of the boosting mechanism according to an embodiment of the present application Figure 3 ; Fig.14 According to the embodiment of the present application Fig.13 A magnified schematic diagram of D in the middle; Fig.15 is a structural exploded diagram of a centering mechanism according to an embodiment of the present application; Fig.16 It is a schematic diagram of the partial structure of the centering mechanism according to an embodiment of the present application.

[0018] Icons: 1. Workbench; 2. Drive system; 21. Motor; 22. Polishing disc; 221. Guide tower; 222. Guide strip; 23. Rotating shaft; 24. Liquid guide cabin; 241. Drain pipe; 25. Splash-proof ring; 3. Positioning system; 31. Positioning disc; 311. Infusion tube; 32. Bracket; 33. Rocker; 34. Correction rod; 4. Polishing fixture; 41. Workpiece disc; 411. Workpiece receiving hole; 42. Correction disc; 43. Positioning cylinder; 431. Limiting ring; 5. Filter to be polished; 6. Boosting mechanism; 61. Positioning frame; 62. Boosting cylinder; 621. Liquid inlet pipe; 622. Liquid outlet pipe; 623. Baffle; 624. Positioning Spring; 625, side through hole; 63, guide rod; 64, vacuum suction cup; 641, connecting shaft; 642, limit groove; 65, piston member; 651, piston disc; 652, outer sealing ring; 653, outer radial channel; 66, positioning block; 661, end sealing ring; 67, reinforcement ring; 671, inner sealing ring; 672, inner radial channel; 7, centering mechanism; 71, base; 72, centering plate; 721, centering rod; 722, slide groove; 723, centering pin; 73, pressure rod; 731, centering shaft; 732, return spring; 74, top driving seat; 741, guide ring; 742, rotating ring; 743, guide strip. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0020] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] Embodiment 1, as Figure 1-Figure 16 As shown, an automatic polishing device for optically bonded filters according to an embodiment of the present application includes a workbench 1, on which a driving system 2 is provided, a rotating end of the driving system 2 is connected to a polishing disc 22, a positioning system 3 coaxial with the polishing disc 22 is fixedly connected to the workbench 1, a plurality of polishing jigs 4 are evenly distributed on the upper end surface of the polishing disc 22, and a plurality of filters 5 to be polished are placed in the polishing jig 4.

[0022] It should be noted that if Figure 2 As shown, in a specific embodiment of the present application, the drive system 2 includes a motor 21 fixed in the workbench 1, the output end of the motor 21 is connected to a rotating shaft 23 through a reversing reducer, the other end of the transmission shaft 23 is coaxially fixed to the polishing disk 22, and a liquid guide chamber 24 is arranged on the peripheral side of the polishing disk 22, a splash-proof ring 25 is additionally provided between the liquid guide chamber 24 and the rotating shaft 23, and a drain pipe 241 is connected to the liquid guide chamber 24, thereby, the polishing disk 22 can be driven to rotate by driving the rotating shaft 23 through the motor 21.

[0023] like Figure 1 As shown, in a specific embodiment of the present application, the positioning system 3 includes a positioning plate 31, the positioning plate 31 and the polishing plate 22 are coaxially arranged, a plurality of brackets 32 are evenly fixedly connected to the circumferential side of the positioning plate 31, a plurality of brackets 32 are fixedly connected to the workbench 1, and a passive roller, a correction rod 34 and a rocker rod 33 are rotatably arranged on the bracket 32 ​​in sequence, wherein the correction rod 34 and the rocker rod 33 are slidably connected, a positioning roller is rotatably arranged on the end of the rocker rod 33, and the correction rod 34 has a telescopic change function. It should be noted that the passive roller and the two adjacent correction plates 42 described below are rotatably abutted, and the positioning roller abuts the side of the correction plate 42 away from the center of the polishing plate 22.

[0024] Since the above are all prior arts, only a general description is given in the specific embodiments of this application. The specific structure and working principle are clear to relevant technicians in the field and will not be elaborated here.

[0025] Furthermore, the automatic polishing device for optically bonded filters in the embodiment of the present application further comprises: a pyramid-shaped guide tower 221 is coaxially fixedly connected to the upper end surface of the polishing plate 22, such as Figure 3 and Figure 4 As shown, a plurality of guide strips 222 are evenly fixedly connected to the inclined surface of the guide tower 221 along the axial and circumferential directions, and the guide strips 222 are spirally arranged. Thus, it can be understood that when the liquid required for polishing is poured to the top of the guide tower 221, the polishing liquid will be more evenly distributed on the polishing disk 22 under the action of its own rotation and the guidance of the plurality of spiral guide strips 222.

[0026] Specifically, a liquid infusion tube 311 connected to an external liquid supply system is provided at the axis of the positioning system 3 to facilitate the continuous delivery of liquid required for polishing.

[0027] like Figure 5 As shown, the polishing jig 4 includes a workpiece disk 41 and a calibration disk 42. The filter 5 to be polished is placed in the workpiece disk 41, and the workpiece disk 41 is movably placed in the calibration disk 42. A positioning cylinder 43 is coaxially arranged at the position where the filter 5 to be polished is placed on the workpiece disk 41. It should be noted that the positioning cylinder 43 can be installed in a detachable manner to facilitate the replacement of the positioning cylinder 43 and the cleaning of the workpiece disk 41.

[0028] like Figure 1 and Figure 5 As shown, a booster mechanism 6 is disposed in the positioning cylinder 43 , and the booster mechanism 6 is connected to an external hydraulic device so as to adjust the internal pressure of the booster mechanism 6 .

[0029] It should be noted that a limiting ring 431 is fixed on the inner wall of the positioning cylinder 43 to limit the position of the boosting mechanism 6 .

[0030] Specifically, Figure 6 As shown, the boosting mechanism 6 includes a positioning frame 61, a boosting cylinder 62, a guide rod 63, a vacuum suction cup 64 and a piston member 65. The positioning frame 61 is threadedly connected to the positioning cylinder 43, and the boosting cylinder 62 is coaxially fixed to the positioning frame 61 to fix the position of the boosting cylinder 62 in the positioning cylinder 43. When the positioning frame 61 is placed in the positioning cylinder 43, its axial displacement stroke is limited by the limiting ring 431. The guide rod 63 is coaxially sealed and slidably inserted in the boosting cylinder 62, and the vacuum suction cup 64 is rotatably connected to the guide rod 63 so as not to affect the rotation of the filter 5 to be polished during the polishing process. The piston member 65 is coaxially fixed to the guide rod 63, and the piston member 65 is sealed and slid on the booster cylinder 62. The axial displacement of the piston member 65 in the booster cylinder 62 changes the pressure applied by the guide rod 63 to the filter 5 to be polished; the guide rod 63 is connected to the vacuum suction cup 64, and the end of the guide rod 63 away from the vacuum suction cup 64 is externally connected to a vacuum pumping device, so that the vacuum suction cup 64 can absorb or put down the filter 5 to be polished; a centering mechanism 7 is provided at one end where the vacuum suction cup 64 and the guide rod 63 are rotatably connected, and the centering mechanism 7 performs axial positioning of the filter 5 to be polished by rotation.

[0031] In addition, the automatic polishing device for optically bonded filters according to the embodiment of the present application also has the following additional technical features: Among them, Figure 5 As shown, a plurality of workpiece receiving holes 411 are distributed on the workpiece disk 41 , and the workpiece receiving holes 411 are used to hold the optical filter 5 to be polished, and the positioning tube 43 is coaxially arranged on the outside of the workpiece receiving hole 411 .

[0032] Furthermore, the positioning frame 61 is hollowed out.

[0033] like Figure 6 As shown, the booster cylinder 62 is arranged with a closed top and an open bottom, and the top of the booster cylinder 62 is connected to a liquid inlet pipe 621 and a liquid outlet pipe 622, respectively. The liquid inlet pipe 621 and the liquid outlet pipe 622 are respectively connected to an external hydraulic device to facilitate changing the liquid capacity between the top of the booster cylinder 62 and the piston member 65.

[0034] Further, such as Fig. 9 As shown, one end of the liquid outlet pipe 622 extending into the booster cylinder 62 is coaxially fixed with a baffle 623, and a positioning spring 624 is sleeved on the liquid outlet pipe 622. The two ends of the positioning spring 624 are respectively abutted against the baffle 623 and the inner top of the booster cylinder 62. It can be seen that under the elastic force of the positioning spring 624, the liquid outlet pipe 622 can undergo axial displacement changes on the booster cylinder 62, and then a continuous abutment action can be formed between the liquid outlet pipe 622 and the piston member 65 to maximize the pressure. To meet the change of liquid capacity between the top of the boosting cylinder 62 and the piston member 65, the liquid outlet pipe 622 extends to the side wall of one end of the boosting cylinder 62 and is evenly arranged with multiple side through holes 625 in the circumferential direction to facilitate the liquid to enter the liquid outlet pipe 622. It should be noted that the liquid outlet pipe 622 is sealed and slidably arranged on the boosting cylinder 62 to meet the requirement that after the liquid outlet pipe 622 and the piston member 65 form abutment relationship, when the piston member 65 is axially displaced, the liquid outlet pipe 622 can make an adaptive axial displacement.

[0035] Further, such as Figure 7 , Figure 8 and Fig.15 As shown, a connecting shaft 641 is coaxially plugged onto the vacuum suction cup 64. In the specific embodiment of the present application, a detachable fixed connection is adopted between the connecting shaft 641 and the vacuum suction cup 64 to facilitate the maintenance of the vacuum suction cup 64 and avoid relative rotation between the vacuum suction cup 64 and the connecting shaft 641. The connecting shaft 641 is rotatably sleeved on the guide rod 63, and the connecting shaft 641 is respectively connected to the guide rod 63 and the vacuum suction cup 64. It can be understood that the rotational relationship between the connecting shaft 641 and the guide rod 63 ensures that the filter 5 to be polished will not generate rotational interference during the polishing process, and the filter 5 to be polished will not drive the guide rod 63 to rotate when it rotates.

[0036] like Figure 7 and Fig.15 As shown, a plurality of limiting grooves 642 are evenly arranged circumferentially on the side wall of the connecting shaft 641 .

[0037] Further, such as Figure 7 , Fig.15 and Fig.16 As shown, the centering mechanism 7 includes: a base 71, a centering plate 72, a pressure rod 73 and a top driving seat 74. The base 71 is threadedly sleeved on the connecting shaft 641 to fix the base 71 on the connecting shaft 641; multiple centering plates 72 are evenly connected to the base 71 in the circumferential direction, and a centering rod 721 is slidably inserted at one end of the centering plate 72 away from the connecting shaft 641. A sliding groove 722 is provided on the centering plate 72, and a centering pin 723 is limitedly slidably connected in the sliding groove 722. The centering pin 723 is rotatably connected to the base 71 to The centering plate 72 can rotate and displace a certain distance relative to the base 71; the pressure rod 73 is arranged on the upper side of the centering plate 72; the top driving seat 74 is slidably sleeved on the connecting shaft 641, and the pressure rod 73 is rotatably connected to the top driving seat 74. It can be understood that when the centering plate 72 rotates on the top driving seat 74, a certain angle change and a certain displacement change will occur between it and the base 71, so as to realize the circumferential clamping action of the centering rod 721 on the centering plate 72 on the filter 5 to be polished.

[0038] When the locking cam 73 is in the unlocking state, the locking cam 731 is in the unlocking state, and the locking cam 732 is in the unlocking state, so that the locking cam 732 can be unlocked when the locking cam 73 is unlocked.

[0039] Furthermore, the top drive seat 74 includes: a guide ring 741, a rotating ring 742 and a guide bar 743. The guide ring 741 is slidably sleeved on the connecting shaft 641; the rotating ring 742 is limitedly rotatably connected to the guide ring 741. It should be noted here that the rotating ring 742 and the guide ring 741 are axially positioned, and the rotation stroke of the rotating ring 742 on the guide ring 741 is limited to meet the centering action of the filter 5 to be polished during the rotation process. It should be further noted that the centering The straight line formed between the core rod 721 and the centering pin 723 is arranged along the radial direction of the base 71, and the centering shaft 731 is rotatably connected to the rotating ring 742, so that the rotation center of the centering plate 72 is determined; a plurality of guide strips 743 are evenly fixed on the inner wall of the guide ring 741 in the circumferential direction, and the plurality of guide strips 743 are respectively slidably matched with a plurality of limit grooves 642, so as to realize the rotation interference of the guide ring 741 on the connecting shaft 641, thereby preventing the guide ring 741 from rotating on the connecting shaft 641.

[0040] The following describes the use process of an automatic polishing device for optically bonded filters according to an embodiment of the present application with reference to the accompanying drawings: When in use, first press the pressure rod 73 or the guide ring 741 downward, and use the rotation of the rotating ring 742 to drive the centering plate 72, the pressure rod 73 and the centering rod 721 to change their angles, so that the multiple centering rods 721 evenly arranged in the circumference form an inward displacement during the rotation process, and the filter 5 to be polished is axially positioned. Then, the pressure rod 73 or the guide ring 741 is released, and the centering rod 721 is raised by the return spring 732 to break away from the clamping of the filter 5 to be polished. At this time, the vacuum suction cup 64 is evacuated by an external vacuum device, so that the filter 5 to be polished is adsorbed by the vacuum suction cup 64, and the axis positioning and fixing action is completed. Then, the booster cylinder 62 is The positioning frame 61 is fixed in the positioning cylinder 43, and the position of the boosting cylinder 62 is limited by the limiting ring 431 in the positioning cylinder 43, and then the liquid is input into the boosting cylinder 62 through the liquid inlet pipe 621 by an external hydraulic device. At this time, the direction of the liquid outlet pipe 622 is blocked, so that the gradually increasing liquid in the boosting cylinder 62 forces the piston member 65 to undergo axial downward displacement, and then drives the guide rod 63 connected to the piston member 65 to move downward synchronously, and gradually applies pressure to the filter 5 to be polished through the connecting shaft 641 and the vacuum suction cup 64. The specific pressure control is achieved by controlling the amount of liquid in the boosting cylinder 62 by the control system of the entire optical glued filter automatic polishing device, so as to solidify the filter 5. A workpiece disk 41 with filters 5 to be polished is placed in the calibration disk 42, and the positioning system 3 is used to fix the positions of multiple calibration disks 42, and the polishing liquid is transported to the direction of the infusion tube 311 through the external liquid supply system, and the polishing liquid is evenly distributed on the polishing disk 22 by using the guide tower 221 and the multiple guide strips 222 spirally arranged thereon, and then the driving system 2 is started to drive the polishing disk 22 to rotate, drive the multiple calibration disks 42 that have been positioned to rotate, and at the same time drive the workpiece disk 41 in the calibration disk 42 to rotate along a certain trajectory, and then the filter 5 to be polished that is positioned and pressurized in the workpiece disk 41 is polished. Conversely, after the polishing is completed, By closing the direction of the infusion tube 311 and opening the direction of the liquid outlet tube 622, the liquid in the booster cylinder 62 is sucked back, forcing the piston 65 to move in the opposite direction, causing the filter 5 to lose pressure, and then the vacuum suction cup 64 loses its adsorption capacity, and then the booster cylinder 62 and the filter 5 to be polished are taken out in turn. This design can avoid the collision between the filter 5 to be polished and the workpiece disk 41 during the polishing process, and avoids the possibility of the filter 5 to be polished being damaged by the collision during the polishing process. At the same time, since a certain pressure is applied to the top of the filter 5 to be polished, the friction between the filter 5 to be polished and the polishing disk 22 can be enhanced, thereby improving the polishing efficiency of the filter 5 to be polished.

[0041] Embodiment 2. In the related art, for an automatic polishing device for an optical cemented filter, since pressure is applied above the filter 5 to be polished, the piston member 65 needs to axially displace within the pressure increasing cylinder 62. Therefore, the sealing performance of the piston member 65 needs to be ensured. Once its sealing performance deteriorates, it is very easy for the liquid used for pressurization to leak onto the polishing disc 22, interfering with the polishing work and at the same time affecting the judgment of the specific pressure value on the filter 5 to be polished, resulting in damage to the filter 5 to be polished due to excessive pressure.

[0042] According to some embodiments of the present application, as Figure 6-Figure 8 and Figure 10-Figure 14 shown, the piston member 65 includes: a piston disc 651 and an outer sealing ring 652. An annular protrusion is provided on the upper end surface of the piston disc 651, and a plurality of through outer radial channels 653 are circumferentially and uniformly arranged on the annular protrusion; the outer sealing ring 652 is hermetically installed on the outer wall of the piston disc 651, and the outer sealing ring 652 is arranged in a U shape. One side of the open end of the U shape of the outer sealing ring 652 communicates with the outer radial channel 653, so that the liquid transported into the pressure increasing cylinder 62 by an external hydraulic device can fill the outer sealing ring 652.

[0043] Furthermore, as Figure 12-14 shown, an external thread is provided at the connection position between the guide rod 63 and the piston disc 651, and two positioning blocks 66 are threadedly connected to the external thread. The two positioning blocks 66 symmetrically abut against the top and bottom ends of the piston disc 651, and a strengthening ring 67 is also threadedly connected to the outside of the positioning block 66. The strengthening ring 67 is hermetically and slidably connected to the guide rod 63.

[0044] Specifically, the two positioning blocks 66 have exactly the same structural size, and an end seal ring 661 is pressed against the end of the two positioning blocks 66 facing the piston disc 651. The end seal ring 661 is hermetically installed on the piston disc 651. The piston disc 651 can be fixedly clamped on the guide rod 63 through the two positioning blocks 66, and the sealing between the positioning block 66 and the piston disc 651 is achieved through the end seal rings 661 on both sides.

[0045] Furthermore, an inner sealing ring 671 is hermetically installed on the side where the strengthening ring 67 is hermetically and slidably connected to the guide rod 63. The inner sealing ring 671 is arranged in a U shape and is hermetically and slidably connected to the guide rod 63.

[0046] Furthermore, the end of the strengthening ring 67 where the inner sealing ring 671 is installed is convexly provided, and a plurality of inner radial channels 672 communicating with the open end of the U shape of the inner sealing ring 671 are circumferentially and uniformly arranged on the convexity, so that the liquid transported into the pressure increasing cylinder 62 by an external hydraulic device can fill the inside of the inner sealing ring 671.

[0047] Therefore, during specific use, when the external hydraulic device transports liquid into the boost cylinder 62, the pressure therein increases. At this time, since the outer sealing ring 652 and the inner sealing ring 671 contain liquid in their respective shapes, the liquid will exert radial force on both of them under the action of pressure, thereby forcing the sealing performance between the outer sealing ring 652 and the inner wall of the boost cylinder 62 to be enhanced, and at the same time forcing the sealing performance between the inner sealing ring 671 and the side wall of the guide rod 63 to be enhanced. The positioning block 66 uses the corresponding end sealing rings 661 from the upper and lower ends of the piston disc 651 to achieve sealing. In this way, the sealing performance between the piston disc 651 and the boost cylinder 62 and the guide rod 63 is guaranteed. At the same time, the positioning block 66 and the reinforcement ring 67 also allow the piston disc 651 to be disassembled, so as to facilitate timely inspection and replacement of the outer sealing ring 652, the end sealing ring 661 and the inner sealing ring 671 to ensure the sealing performance inside the boost cylinder 62 and avoid leakage and a decrease in pressure value accuracy due to a decrease in sealing performance.

[0048] Embodiment 3: In the related art, the automatic polishing device for optically bonded filters applies a certain pressure during the polishing process of the filter 5 to be polished. Therefore, when the filter 5 to be polished is polished, it will generate heat due to continuous friction. Although the heat will have certain benefits for the polishing liquid, if the temperature is not controlled, the polishing effect of the filter 5 to be polished will be adversely affected, thereby reducing the quality of polishing.

[0049] According to some embodiments of the present application, Figure 6 , Figure 7 , Fig.15 and Fig.16 As shown, multiple centering plates 72 are tilted in the same direction and at the same angle. In this way, when the filter 5 to be polished rotates during the polishing process, it will drive the connecting shaft 641 to rotate through the vacuum suction cup 64 that fixes itself, and then drive the entire centering mechanism 7 to rotate through the connecting shaft 641. In this way, the multiple tilted centering plates 72 will drive the flow of air during the rotation process, and the airflow will eventually interact with the outside world at the hollow positioning frame 61, so as to realize the circulation of airflow above the filter 5 to be polished, and dissipate the heat generated by continuous friction on the filter 5 to be polished, so as to control the continuous rise in temperature thereon.

[0050] It should be noted that an elastic member is provided between the rotating ring 742 and the guide ring 741 , one end of the elastic member is fixed to the guide ring 741 , and the other end of the elastic member is fixed to the rotating ring 742 .

[0051] Furthermore, the elastic member is a torsion spring arranged along the axial direction or an arc spring arranged along the rotation direction. It should be noted that the elastic force value of the elastic member is selected to be greater than the force that causes the centering plate 72 to swing during the rotation process.

[0052] Therefore, it can be understood that the rotating ring 742 has the ability to reset after rotation. In the specific embodiment of the present application, after the rotating ring 742 is reset, the direction of the centering plate 72 can be set to be along the radial direction of the rotating ring 742. In this way, the coverage area of ​​the airflow formed by the centering plate 72 during the rotation process can be increased, thereby enhancing the air cooling effect. At the same time, the elastic rotation setting can avoid the swinging of the centering plate 72 due to rotation during the grinding process, thereby avoiding the swinging of the centering plate 72 during the rotation process to reduce the effect of generating airflow.

[0053] It should be noted that the specific models and specifications of the motor 21, polishing disk 22, rotating shaft 23, liquid guide chamber 24, splash guard ring 25, workpiece disk 41, correction disk 42, positioning spring 624 and reset spring 732 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail.

[0054] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An automatic polishing device for optically bonded filters, comprising a workbench (1), the workbench (1) being provided with a drive system (2), the rotating end of the drive system (2) being connected to a polishing disc (22), the workbench (1) being fixedly connected to a positioning system (3) coaxial with the polishing disc (22), a plurality of polishing jigs (4) being evenly distributed on the upper end surface of the polishing disc (22), a plurality of filters (5) to be polished being placed in the polishing jigs (4), characterized in that: Also includes: A pyramid-shaped flow guide tower (221) is coaxially fixedly connected to the upper end surface of the polishing disc (22); A liquid infusion tube (311) connected to an external liquid supply system is provided at the axis of the positioning system (3); The polishing jig (4) comprises a workpiece disc (41) and a calibration disc (42); the optical filter (5) to be polished is placed in the workpiece disc (41); the workpiece disc (41) is movably placed in the calibration disc (42); a positioning cylinder (43) is coaxially arranged at the position of the workpiece disc (41) where the optical filter (5) to be polished is placed; A pressure boosting mechanism (6) is provided in the positioning cylinder (43), and the pressure boosting mechanism (6) is connected to an external hydraulic device; The boost mechanism (6) comprises a positioning frame (61), a boost cylinder (62), a guide rod (63), a vacuum suction cup (64) and a piston member (65); the positioning frame (61) is threadedly connected to the positioning cylinder (43); the boost cylinder (62) is coaxially fixed to the positioning frame (61); the guide rod (63) is coaxially sealed and slidably inserted into the boost cylinder (62); the vacuum suction cup (64) is rotatably connected to the guide rod (63); the piston member (65) is coaxially fixed to the guide rod (63); and the piston member (65) is sealably slidably inserted into the boost cylinder (62); The guide rod (63) is connected to the vacuum suction cup (64), and one end of the guide rod (63) away from the vacuum suction cup (64) is externally connected to a vacuum pumping device; One end of the vacuum suction cup (64) and the guide rod (63) being rotatably connected is provided with a centering mechanism (7), and the centering mechanism (7) positions the axis of the filter to be polished (5) by rotating.

2. The automatic polishing device for optically bonded filters according to claim 1, characterized in that: A plurality of workpiece accommodating holes (411) are distributed on the workpiece disk (41), the workpiece accommodating holes (411) being used to hold the optical filter (5) to be polished, and the positioning cylinder (43) is coaxially arranged on the outside of the workpiece accommodating holes (411).

3. The automatic polishing device for optically bonded filters according to claim 1, characterized in that: The positioning frame (61) is hollowed out.

4. The automatic polishing device for optically bonded filters according to claim 1, characterized in that: The boost cylinder (62) is arranged with a closed top and an open bottom, and the top of the boost cylinder (62) is respectively connected to a liquid inlet pipe (621) and a liquid outlet pipe (622), and the liquid inlet pipe (621) and the liquid outlet pipe (622) are respectively connected to an external hydraulic device.

5. The automatic polishing device for optically bonded filters according to claim 4, characterized in that: The end of the liquid outlet pipe (622) extending into the booster cylinder (62) is coaxially fixedly connected with a baffle (623), and a positioning spring (624) is sleeved on the liquid outlet pipe (622). The two ends of the positioning spring (624) are respectively abutted against the baffle (623) and the inner top end of the booster cylinder (62). A plurality of side through holes (625) are evenly arranged on the side wall of one end of the liquid outlet pipe (622) extending into the booster cylinder (62).

6. The automatic polishing device for optically bonded filters according to claim 1, characterized in that: A connecting shaft (641) is coaxially plugged onto the vacuum suction cup (64), the connecting shaft (641) is rotatably sleeved on the guide rod (63), and the connecting shaft (641) is respectively connected to the guide rod (63) and the vacuum suction cup (64).

7. The automatic polishing device for optically bonded filters according to claim 6, characterized in that: A plurality of limiting grooves (642) are evenly arranged circumferentially on the side wall of the connecting shaft (641).

8. The automatic polishing device for optically bonded filters according to claim 7, characterized in that: The centering mechanism (7) comprises: A base (71), the base (71) being threadedly sleeved on the connecting shaft (641); A plurality of centering plates (72), wherein the plurality of centering plates (72) are evenly connected to the base (71) in the circumferential direction, a centering rod (721) is slidably inserted into one end of the centering plate (72) away from the connecting shaft (641), a sliding groove (722) is provided on the centering plate (72), a centering pin (723) is limitedly slidably connected in the sliding groove (722), and the centering pin (723) is rotatably connected to the base (71); A pressure rod (73), the pressure rod (73) being arranged on the upper side of the centering plate (72); A top driving seat (74), wherein the top driving seat (74) is slidably sleeved on the connecting shaft (641), and the pressure rod (73) is rotatably connected to the top driving seat (74).

9. The automatic polishing device for optically bonded filters according to claim 8, characterized in that: One end of the pressure rod (73) is fixedly connected to the centering rod (721), and the other end of the pressure rod (73) is slidably inserted with a centering shaft (731), and the centering shaft (731) is fixedly connected to the centering plate (72). The centering shaft (731) is rotatably connected to the top driving seat (74), and a return spring (732) is sleeved on the centering shaft (731), and two ends of the return spring (732) are respectively abutted against the centering plate (72) and the top driving seat (74).

10. The automatic polishing device for optically bonded filters according to claim 9, characterized in that: The top drive seat (74) comprises: A guide ring (741), the guide ring (741) being slidably sleeved on the connecting shaft (641); A rotating ring (742), the rotating ring (742) being rotationally connected to the guide ring (741) in a limited position, and the centering shaft (731) being rotationally connected to the rotating ring (742); A plurality of guide strips (743) are evenly fixed on the inner wall of the guide ring (741) in the circumferential direction, and the plurality of guide strips (743) are respectively slidably matched with the plurality of limit grooves (642).

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