Lens center thickness detection instrument

Abstract

The utility model discloses a lens center thickness detection instrument, and relates to the technical field of detection equipment, the lens center thickness detection instrument comprises a detection instrument body and a bottom bin, a rotating shaft movably penetrates through one side of an inner cavity of the bottom bin, a worm is fixedly arranged on one side, located on the detection instrument body, of the rotating shaft, a worm gear is meshed with one side of the worm, and a lead screw fixedly penetrates through the middle of the worm gear; the upper portion of the lead screw is in threaded connection with a side fixing plate fixedly connected with the detector body, a bevel gear A is fixedly arranged in the middle of the rotating shaft, a rotary lifting mechanism is arranged on one side of the bevel gear A, a fixing bottom plate is fixedly arranged in the middle of an inner cavity of the rotating shaft, and a plurality of rotary clamping mechanisms identical in structure and installation mode are arranged on the fixing bottom plate in a surrounding mode. According to the invention, the problems of loose clamping, tedious operation and unfavorable detection efficiency improvement caused by long-term use are improved.

Description

Technical Field

[0001] The present application relates to the field of detection equipment technology, and in particular to an instrument for detecting the center thickness of a lens. Background Art

[0002] Lens center thickness testers are primarily categorized into contact and non-contact types. Contact testers, like traditional thickness gauges, measure thickness by contacting the probe with the lens surface, but this carries the risk of scratching the lens surface and affecting measurement accuracy due to wear. Non-contact testers, on the other hand, utilize advanced technologies such as optics and lasers to achieve non-destructive, high-precision measurement of lens center thickness.

[0003] For example, the lens thickness detection device disclosed in application number CN202021072570.9 has the following deficiencies:

[0004] The above patent grasps both sides of the tablet from the inside of the groove and lifts it upwards to disengage the card strip from the notch. At this time, the tablet is turned upside down and the lens is poured out of the limit groove of the tablet to reduce the time required for the user to remove the lens. However, in the case of long-term removal, it is inevitable that the wear between the tablet and the groove will cause the clamping to be loose, thereby causing scratches on the lens surface. In addition, if the tablet is turned upside down, the lens may fall out of the palm of the staff. In addition, this structural design makes the removal operation more cumbersome and is not conducive to improving the detection speed and efficiency. Utility Model Content

[0005] In order to improve the problems of loose connection, cumbersome operation and poor detection efficiency caused by long-term use, the present application provides a lens center thickness detection instrument.

[0006] The present application provides a lens center thickness detection instrument that adopts the following technical solution:

[0007] A lens center thickness detection instrument, comprising a detector body and a bottom chamber, characterized in that: a rotating shaft is movably provided through one side of an inner cavity of the bottom chamber, a worm is fixedly provided on the rotating shaft at one side of the detector body, a worm wheel is meshedly provided on one side of the worm, a screw is fixedly provided through the middle of the worm wheel, and the upper portion of the screw is threadedly connected to a side fixing plate fixed to the detector body;

[0008] A helical gear A is fixedly provided in the middle of the rotating shaft, and a rotating lifting mechanism is provided on one side of the helical gear A. The rotating lifting mechanism includes a helical gear B meshingly provided on one side of the helical gear A. A transmission shaft is fixedly provided in the middle of the side of the helical gear B away from the helical gear A. The transmission shaft is fixedly provided through the middle of the first gear on the side away from the helical gear B. A first rack is meshed with the lower part of the first gear, and a transverse slide groove is slidingly provided on the lower part of the first rack. A fixed seat is fixed on the side of the transverse slide groove away from the first rack;

[0009] A fixed base plate is fixed in the middle of the inner cavity of the rotating shaft, and several rotating clamping mechanisms with the same structure and installation method are arranged around the fixed base plate. The rotating clamping mechanism includes a side platform fixed on one side of the fixed base plate, and a second gear is rotatably arranged on the upper part of the side platform. One side of the second gear is meshed with an outer gear ring that is rotatably connected to the fixed base plate.

[0010] By adopting the above technical solution, the worm wheel and the worm can cooperate to realize rotation and limit the position at the same time, so that the detector body will not fall off the lead screw due to gravity, and the lead screw can also provide guidance and support for the detector body. The rotary lifting mechanism and the rotary clamping mechanism cooperate with each other to achieve clamping and centering of the lens, and synchronize with the worm wheel and worm, which can speed up the detection speed and improve the detection efficiency.

[0011] Preferably, the rotary lifting mechanism further comprises two connecting rods rotatably arranged on the fixed seat and one side surface of the first rack respectively, and the upper portions of the two connecting rods are slidably connected to the fixed block.

[0012] By adopting the above technical solution, the two connecting rods are arranged in a triangular movable manner, which can provide good upward thrust and stability.

[0013] Preferably, the rotary clamping mechanism further comprises an annular slide bar fixed on the upper surface of the outer ring of the fixed base plate, and an annular slide groove opened in the middle of the lower surface of the outer gear ring is slidably provided on the upper part of the annular slide bar.

[0014] By adopting the above technical solution, the annular slide rod and the annular slide groove cooperate with each other so that the outer gear ring and the fixed base plate can rotate and limit each other at the same time.

[0015] Preferably, a second rack meshing with the second gear is slidably provided on one side of the annular slide bar, a T-shaped slide bar is fixed on the upper part of the second rack, and a T-shaped slide groove fixed to the compartment cover is slidably provided on the upper part of the T-shaped slide bar.

[0016] By adopting the above technical solution, the fixed connection between the T-shaped slide groove and the compartment cover can provide lateral support for the T-shaped slide bar and the second rack, and the cooperation between the T-shaped slide bar and the T-shaped slide groove can make the second rack move more smoothly.

[0017] Preferably, the second rack is located on one side of the outer gear ring and is fixed with an arc-shaped plate capable of clamping the lens.

[0018] By adopting the above technical solution, multiple curved plates moving toward the middle can help the lens move toward the center, and there is no need for manual labor to slowly find the center point.

[0019] Preferably, the upper portion of the helical gear A is meshed with a helical gear C fixedly connected to the lower portion of the second gear.

[0020] By adopting the above technical solution, the meshing of the helical gear C and the helical gear A can continuously provide power for the rotating clamping mechanism.

[0021] Preferably, a lifting plate for placing the lens to be inspected is inserted into the upper part of the fixing block.

[0022] By adopting the above technical solution, the lifting plate can smoothly lift and lower the lens and assist in centering the lens.

[0023] Preferably, a dust-proof bin cover is clamped on the upper portion of the inner cavity of the bottom bin.

[0024] By adopting the above technical solution, the bin cover can protect the structure inside the bottom bin and provide auxiliary support for the detector body.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The rotation of the shaft drives the worm and worm wheel to cooperate with each other, and drives the screw to rotate, and then the screw drives the detection needle in the detector body to move toward the lens on the lifting plate, so as to quickly detect the center thickness of the lens;

[0027] 2. With the help of the synchronous cooperation of the rotary lifting mechanism and the rotary clamping structure, the lifting plate and the curved plate move synchronously, and the lens is adjusted and centered when the curved plate moves toward the middle until the lifting plate lifts the lens to contact the probe in the detector body. The curved plate also completes the centering of the lens. The operation is simple and the detection efficiency will be faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the overall axonometric view of the application;

[0029] Figure 2 This is the internal structure diagram of the bottom warehouse of this application;

[0030] Figure 3 This is a side view of the internal structure of the bottom bin of this application;

[0031] Figure 4 Looking up for the overall internal structure of this application;

[0032] Figure 5 An enlarged view of the rotary clamping mechanism of this application;

[0033] Figure 6 This is an exploded view of the second rack of this application;

[0034] Figure 7 This is an enlarged view of the rotating lifting mechanism of this application.

[0035] Reference numerals: 1, detector body; 2, bottom chamber; 3, rotating shaft; 4, worm; 5, worm wheel; 6, lead screw; 7, bevel gear A;

[0036] 8. Rotating lifting mechanism; 81. Bevel gear B; 82. Transmission shaft; 83. First gear; 84. First rack; 85. Connecting rod; 86. Fixed seat; 87. Horizontal slide; 88. Fixed block;

[0037] 9. Rotary clamping mechanism; 91. Side platform; 92. Second gear; 93. Outer ring gear; 94. Arc plate; 95. Annular chute; 96. Annular slide bar; 97. T-shaped chute; 98. Second rack; 99. T-shaped slide bar;

[0038] 10. Lifting plate; 11. Side fixing plate; 12. Bin cover; 13. Fixed bottom plate; 14. Bevel gear C. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-Figure 7 This application is described in further detail.

[0040] An embodiment of the present application discloses an instrument for detecting the center thickness of a lens.

[0041] Reference Figure 1 、 Figure 2 、 Figure 3 , a lens center thickness detection instrument, including a lens center thickness detection instrument body 1 and a bottom bin 2 that provides support for the detection instrument body 1, and the two ends on one side of the inner cavity of the bottom bin 2 are movably penetrated by the two ends of the rotating shaft 3 and are rotatably connected to the bottom bin 2, and the rotating shaft 3 is located on one side of the detection instrument body 1 and is fixedly connected to the worm 4, and the worm 4 is located on one side of the detection instrument body 1 and is meshed with the worm gear 5, and the middle part of the worm gear 5 is fixedly penetrated by the lower end of the screw rod 6, and the lower end of the screw rod 6 is fixedly penetrated by the worm gear 5 and is rotatably connected to the bottom of the inner cavity of the bottom bin 2, and the upper part of the screw rod 6 is threadedly connected to the side fixing plate 11, and the side fixing plate 11 is fixedly connected to the detection instrument body 1 by screws on the surface of one side of the screw rod 6, and the upper opening position of the inner cavity of the bottom bin 2 is clamped with the bin cover 12 for dust prevention.

[0042] It should be noted that the detector body 1 in the above device is prior art, and its structural principle will not be described in detail here.

[0043] The bottom bin 2 and the bin cover 12 cooperate to provide a stable support for the detector body 1, and the rotating shaft 3 is fixedly connected to the worm 4, so that when the rotating shaft 3 is rotated, the worm 4 is driven to rotate together, and then the worm wheel 5 is driven to rotate, and the screw 6 is driven to rotate, so that the side fixing plate 11 is connected to the screw 6 through a threaded connection, thereby realizing longitudinal linear motion, and the side fixing plate 11 is fixedly connected to the detector body 1, so the side fixing plate 11 moves synchronously with the detector body 1 during the movement, and the height position of the side fixing plate 11 and the detector body 1 on the screw 6 can be adjusted, thereby achieving more precise cooperation with the rotating lifting mechanism 8 when detecting the center thickness of the lens, and preventing the lens surface from being scratched during the inspection process.

[0044] Reference Figure 3 、 Figure 4 、 Figure 7 , and the outer surface of the middle part of the side of the rotating shaft 3 away from the worm 4 is fixedly connected to the inner surface of the helical gear A7, and a rotating lifting mechanism 8 is provided on the side of the helical gear A7 located at the center of the inner cavity of the bottom bin 2, and the rotating lifting mechanism 8 includes a helical gear B81 meshed with the helical gear A7 located at the center of the inner cavity of the bottom bin 2, and the middle part of the surface of the helical gear B81 away from the helical gear A7 is fixedly connected to the surface of one side of the transmission shaft 82, and the outer surface of the end of the transmission shaft 82 away from the helical gear B81 is fixedly connected to the inner surface of the middle part of the first gear 83 The first gear 83 is fixedly connected through the transmission shaft 82, and a horizontal plate fixedly connected to the fixed bottom plate 13 is provided in the middle of the transmission shaft 82 as a support. The lower part of the first gear 83 is meshed with the first rack 84, and the lower surface of the first rack 84 and the inner surface of the horizontal groove 87 are both set to smooth surfaces and can slide against each other. The side surface of the horizontal groove 87 away from the first rack 84 is fixedly connected to the side surface of the fixed seat 86, and the lower surfaces of the horizontal groove 87 and the fixed seat 86 are fixedly connected to the bottom surface of the inner cavity of the bottom bin 2.

[0045] Reference Figure 7 , and the middle part of the surface of the fixed seat 86 away from the bevel gear B81 and the surface of the first rack 84 away from the bevel gear B81 are respectively rotatably connected to the lower ends of two connecting rods 85 with the same structure and installation method, and the upper ends of the two connecting rods 85 are connected together in a triangular arrangement to improve the stability of the lifting, and the upper ends of the two connecting rods 85 are slidably connected to the limiting sliding grooves opened on the surface of the fixed block 88 away from the bevel gear B81, and the upper surface of the fixed block 88 is plugged and fixed to the middle part of the lower surface of the lifting plate 10, and the outer annular surface of the lifting plate 10 is in contact with the inner annular surface of the fixed base plate 13, and the lifting plate 10 will not separate from the inner surface of the fixed base plate 13 when lifting, so that the fixed base plate 13 always limits the lifting plate 10, and the upper surface of the lifting plate 10 can be set to a smooth plane or a cloth surface similar to a dust-free cloth for placing the lens to be inspected.

[0046] It should be noted that a horizontal plate fixedly connected to the fixed base plate 13 is provided in the middle of the transmission shaft 82 as a support for the transmission shaft 82, and can prevent the transmission shaft 82 from swinging back and forth, causing unstable connection between the first gear 83 and the first rack 84 at both ends and disconnection between the bevel gear B81 and the bevel gear A7, resulting in power being unable to be transmitted. The upper end face of the lifting plate 10 rises to the height of the lower end face of the arc plate 94 and then stops, and the outer annular surface of the lifting plate 10 is always in contact with the inner annular surface of the fixed base plate 13 when the lifting height is reached, so that the fixed base plate 13 can always limit the lifting plate 10.

[0047] The bevel gear A7 and the bevel gear B81 are meshed with each other, so that when the bevel gear A7 rotates, it drives the bevel gear B81 to rotate, and then drives the transmission shaft 82 fixedly connected to the bevel gear B81 and the first gear 83 fixedly connected to the transmission shaft 82 to rotate synchronously, thereby pushing the first rack 84 meshed with the first gear 83 to move toward the side of the fixed seat 86, and then drives the connecting rod 85 connected to the first rack 84 to approach the connecting rod 85 connected to the fixed seat 86, so that the two connecting rods 85 slide in the fixed block 88 and push the fixed block 88 upward, so that the fixed block 88 drives the lifting plate 10 to move upward, and the bottom of the outer ring surface of the lifting plate 10 cannot be separated from the highest point of the inner ring surface of the fixed base plate 13.

[0048] Reference Figure 4 、 Figure 5 、 Figure 6 A circular fixed base plate 13 is suspended and fixed in the middle of the inner cavity of the rotating shaft 3 through several columns, and several rotating clamping mechanisms 9 with the same structure and installation method are arranged around the fixed base plate 13. The rotating clamping mechanism 9 includes a side platform 91 fixed on one side of the outer ring surface of the fixed base plate 13, and the middle part of the upper surface of the side platform 91 is rotatably connected with the second gear 92, and the lower part of the second gear 92 moves through the middle of the side platform 91, and the second gear 92 moves through the lower surface of one end of the middle part of the side platform 91 and is fixedly connected to the middle part of the upper surface of the bevel gear C14, and the lower end of the bevel gear C14 is meshed with the bevel gear A7, and one side of the second gear 92 is meshed with the outer ring gear 93, and a smooth annular groove 95 is provided in the middle part of the lower surface of the outer ring gear 93, and a smooth annular slide rod 96 is slidingly provided in the inner cavity of the annular groove 95, and the lower surface of the annular slide rod 96 is fixedly connected to the outer ring of the upper surface of the fixed base plate 13.

[0049] Reference Figure 5 、 Figure 6, an open groove is left between every two annular slide bars 96 arranged around the outer ring of the fixed base plate 13, and the width of the open groove is greater than the width of the second rack 98, and the bottom surface height of the outer gear ring 93 is higher than the second rack 98 and the height of the T-shaped slide bar 99, and one side of the second rack 98 is meshed with the second gear 92, and the middle part of the upper surface of the second rack 98 is fixedly connected to the lower surface of the T-shaped slide bar 99, and the outer surface of the T-shaped slide bar 99 and the inner surface of the T-shaped slide groove 97 are both set to smooth surfaces and slidably connected to each other, and the upper surface of the T-shaped slide groove 97 is fixedly connected to the lower surface of the bin cover 12, and the second rack 98 is located on one side surface of the outer gear ring 93 and is fixedly connected to the lower surface of the arc plate 94, and when several arc plates 94 abut against each other, they can form a small circle to clamp the lens.

[0050] It should be noted that in order not to affect the clamping effect, the number of rotating clamping mechanisms 9 arranged around the fixed base plate 13 shall not be less than three, and four is optimal. The moving distance of the arc plate 94 matches the height of the lifting plate 10, so that the arc plate 94 can be moved to the upper part of the lifting plate 10 to center and fix the lens, and the center of the lifting plate 10 is consistent with the center of the detection needle in the detector body 1.

[0051] The side platform 91 can provide support for the second gear 92 and the bevel gear C14, so that the bevel gear C14 can always mesh with the bevel gear A7. When the bevel gear A7 rotates, it can drive the bevel gear C14 and the second gear 92 to rotate synchronously, thereby driving the outer ring gear 93 to stop rotating on the fixed base plate 13, thereby driving the second gear 92 set at other positions around the fixed base plate 13 to rotate, and at the same time can drive the second rack 98 to move, thereby pushing the arc plate 94 toward the center of the fixed base plate 13. When the second rack 98 moves, the T-shaped slot 97 and the T-shaped slide bar 99 cooperate with each other to support and limit the second rack 98.

[0052] The implementation principle of a lens center thickness detection instrument in an embodiment of the present application is: first, the staff places the lens on the upper part of the lifting plate 10, and then rotates the rotating shaft 3, so that the rotating shaft 3 drives the worm 4 and the bevel gear A7 to rotate at the same time. When the worm 4 rotates, it can drive the worm wheel 5 to rotate, and then drive the screw 6 to rotate, so that the side fixing plate 11 moves with the detector body 1 toward the lifting plate 10.

[0053] At the same time, when the bevel gear A7 rotates, it can drive the bevel gear C14 and the bevel gear B81 to rotate at the same time. When the bevel gear B81 rotates, it will drive the transmission shaft 82 and the first gear 83 to rotate synchronously, and then push the first rack 84 to move toward the side of the fixed seat 86, thereby driving the two connecting rods 85 to approach each other, so that the upper ends of the two connecting rods 85 slide in the fixed block 88 and push the fixed block 88 upward, so that the fixed block 88 drives the lifting plate 10 to move toward the detection needle in the detector body 1.

[0054] When the bevel gear C14 rotates, it can drive the second gear 92 and the outer ring gear 93 to rotate together, and then push the second rack 98, so that the second rack 98 drives the arc plate 94 to move toward the center of the fixed base plate 13 and move synchronously with the lifting plate 10 until they abut, thereby realizing the centering and fixed clamping of the lens. When the arc plate 94 clamps the lens, the side fixing plate 11 also moves the probe in the detector body 1 to the center of the lens, and then detects the center thickness of the lens.

[0055] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A lens center thickness detection instrument, comprising a detector body (1) and a bottom chamber (2), characterized in that: A rotating shaft (3) is movably provided on one side of the inner cavity of the bottom bin (2); a worm (4) is fixedly provided on one side of the rotating shaft (3) located on the detector body (1); a worm wheel (5) is meshedly provided on one side of the worm (4); a screw rod (6) is fixedly provided through the middle of the worm wheel (5); and the upper part of the screw rod (6) is threadedly connected to a side fixing plate (11) fixed to the detector body (1); A helical gear A (7) is fixedly provided in the middle of the rotating shaft (3), and a rotating lifting mechanism (8) is provided on one side of the helical gear A (7). The rotating lifting mechanism (8) includes a helical gear B (81) meshed with the helical gear A (7). A transmission shaft (82) is fixedly provided in the middle of the side of the helical gear B (81) away from the helical gear A (7). The transmission shaft (82) is fixedly passed through the middle of the first gear (83) away from the helical gear B (81). A first rack (84) is meshed with the lower part of the first gear (83). A transverse sliding groove (87) is slidingly provided on the lower part of the first rack (84). A fixed seat (86) is fixedly provided on the side of the transverse sliding groove (87) away from the first rack (84). A fixed base plate (13) is fixedly provided in the middle of the inner cavity of the rotating shaft (3), and a plurality of rotating clamping mechanisms (9) with the same structure and installation method are arranged around the fixed base plate (13). The rotating clamping mechanism (9) includes a side platform (91) fixedly provided on one side of the fixed base plate (13), a second gear (92) is rotatably provided on the upper part of the side platform (91), and an outer gear ring (93) is meshed with one side of the second gear (92) and is rotatably connected to the fixed base plate (13).

2. The lens center thickness detection instrument according to claim 1, characterized in that: The rotary lifting mechanism (8) further comprises two connecting rods (85) rotatably arranged on the fixed seat (86) and the surface of one side of the first rack (84), and the upper parts of the two connecting rods (85) are slidably connected to the fixed block (88).

3. The lens center thickness detection instrument according to claim 1, characterized in that: The rotary clamping mechanism (9) further comprises an annular slide bar (96) fixed on the upper surface of the outer ring of the fixed base plate (13), and an annular slide groove (95) is slidably provided on the upper portion of the annular slide bar (96) and opened in the middle of the lower surface of the outer gear ring (93).

4. The lens center thickness detection instrument according to claim 3, characterized in that: A second rack (98) meshing with the second gear (92) is slidably provided on one side of the annular slide bar (96); a T-shaped slide bar (99) is fixed on the upper portion of the second rack bar (98); and a T-shaped slide groove (97) fixedly connected to the bin cover (12) is slidably provided on the upper portion of the T-shaped slide bar (99).

5. The lens center thickness detection instrument according to claim 4, characterized in that: The second rack (98) is located on one side of the outer gear ring (93) and is fixed with an arc-shaped plate (94) capable of clamping a lens.

6. The lens center thickness detection instrument according to claim 1, characterized in that: The upper portion of the helical gear A (7) is meshed with a helical gear C (14) fixedly connected to the lower portion of the second gear (92).

7. The lens center thickness detection instrument according to claim 2, characterized in that: The upper part of the fixed block (88) is plugged with a lifting plate (10) for placing the lens to be inspected.

8. The lens center thickness detection instrument according to claim 1, characterized in that: A dust-proof bin cover (12) is clamped on the upper portion of the inner cavity of the bottom bin (2).

Images