Lens clamping device with adjustable flatness

Abstract

The utility model provides a flatness-adjustable lens clamping device. The flatness-adjustable lens clamping device comprises a threaded plate, a flatness adjusting mechanism and a lens, the flatness adjusting mechanism is connected with the threaded plate and the lens. A connecting plate is connected below the threaded plate, the lens is connected with the connecting plate, and the lens vertically penetrates through the threaded plate and the connecting plate; the flatness adjusting mechanism comprises a reference assembly and two adjusting assemblies, and the reference assembly and the two adjusting assemblies are arranged on the periphery of the lens in a triangular shape. The reference assembly comprises a reference bolt, and the lower end of the reference bolt penetrates through the threaded plate to be in threaded connection with the connecting plate. Each adjusting assembly comprises an adjusting bolt and an adjusting screw, the adjusting screws are arranged on the threaded plates in a penetrating mode, and the adjusting screws and the threaded plates are in threaded connection through fine threads; the adjusting bolt penetrates through the adjusting screw, and the lower end of the adjusting bolt penetrates through the threaded plate to be in threaded connection with the connecting plate. The lens clamping device with the adjustable flatness can effectively improve the flexibility of equipment and the production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of camera equipment, in particular to a lens clamping device. Background Art

[0002] With the continuous development of science and technology, the application of lens modules is becoming more and more extensive. For example, they are used in inspection equipment to scan products through cameras, collect images, and detect defects on target products through image processing. Therefore, it is necessary to make the angle and flatness of the camera adjustable.

[0003] Existing camera flatness adjustment solutions typically involve installing a flatness compensation plate or alignment adjustment mechanism within the lens assembly. However, the flatness compensation plate cannot be adjusted immediately during recording, and the alignment adjustment mechanism itself has inherent structural flaws, resulting in poor yaw adjustment freedom for the lens after adjustment or locking.

[0004] Therefore, it is necessary to design a new lens clamping device to solve the above problems. Utility Model Content

[0005] The utility model provides a lens clamping device with adjustable flatness, which can adjust flatness and R-axis and improve the flexibility and production efficiency of equipment.

[0006] The technical solution adopted by the utility model is: a lens clamping device with adjustable flatness, which includes: a threaded plate, a flatness adjustment mechanism and a lens; the flatness adjustment mechanism connects the threaded plate and the lens;

[0007] A connecting plate is connected below the threaded plate, the lens is connected to the connecting plate, and the upper and lower ends of the lens pass through the threaded plate and the connecting plate; the flatness adjustment mechanism includes a reference component and two adjustment components, one of the reference components and the two adjustment components are arranged in a triangle on the periphery of the lens;

[0008] The reference assembly includes a reference bolt, the lower end of which passes through the threaded plate and is screwed to the connecting plate; each of the adjustment assemblies includes an adjustment bolt and an adjustment screw, the adjustment screw is passed through the threaded plate, and the outer peripheral wall of the adjustment screw is provided with a fine thread, and the adjustment screw and the threaded plate are screwed together by the fine thread; the adjustment bolt is passed through the adjustment screw, and the lower end of the adjustment bolt passes through the threaded plate and is screwed to the connecting plate;

[0009] Twist the reference bolt to adjust the reference assembly in advance; then, based on the reference assembly, twist the adjustment screw to move the threaded plate up and down relative to the adjustment screw, driving the connecting plate to swing on the horizontal plane, thereby driving the lens to swing on the horizontal plane, changing the flatness of the lens, and realizing the flatness adjustment of the lens.

[0010] Furthermore, the reference assembly also includes a reference spring, a reference upper circular part and a reference lower circular part; the reference upper circular part is installed on the lower surface of the threaded plate, the upper surface of the connecting plate is provided with a mounting groove, and the reference lower circular part is installed in the mounting groove; the reference upper circular part is located directly above the reference lower circular part and contacts the spherical surface of the reference lower circular part; the reference bolt passes downward through the threaded plate, the reference upper circular part and the reference lower circular part, and the lower end is screwed to the connecting plate; the reference spring is sleeved on the reference bolt and is located between the head of the reference bolt and the upper surface of the threaded plate.

[0011] Furthermore, each of the adjustment components also includes an adjustment spring and an adjustment circular piece; the bottom of the adjusting screw passes through the lower surface of the threaded plate, and the bottom of the adjusting screw is provided with a spherical contact surface; the upper surface of the connecting plate is provided with a groove, and the adjusting circular piece is installed in the groove; the spherical contact surface is located directly above the adjusting circular piece and contacts with the spherical surface of the adjusting circular piece; the adjusting bolt passes downward through the adjusting circular piece, and the lower end is screwed to the connecting plate; the adjusting spring is sleeved on the adjusting bolt and is located between the head of the adjusting bolt and the top of the adjusting screw.

[0012] Furthermore, the lens clamping device with adjustable flatness also includes an R-axis adjustment structure, which includes a clamping block, an adjustment flange, and two micrometer knobs; the adjustment flange is connected to the connecting plate; the clamping block is clamped on the outer wall of the lens, and the clamping block is arranged in the adjustment flange; the lens passes through the connecting plate and the threaded plate upward, and passes through the adjustment flange downward; the two micrometer knobs are arranged oppositely on the connecting plate, and the two micrometer knobs are used to push the adjustment flange to the left and right respectively.

[0013] Furthermore, the plate body of the connecting plate is provided with a through hole for the lens to pass through, and the side wall of the plate body is connected to a block, and the block extends with two oppositely arranged mounting arms, and a receiving groove is formed between the two mounting arms; each micrometer knob is installed on each mounting arm, and each micrometer knob is provided with a push rod, and the two push rods are both extended and located in the receiving groove.

[0014] Furthermore, the adjusting flange includes a connecting portion, which extends downward to form a mounting portion; the connecting portion is connected to the lower surface of the threaded plate, and the clamping block is installed in the mounting portion; the outer peripheral wall of the mounting portion is connected to a connecting block, and the connecting block is protruded with an adjusting block, which protrudes into the accommodating groove, and the adjusting block is located between the two push rods.

[0015] Furthermore, the mounting portion is provided with a screw hole, and the screw passes through the screw hole to tighten the clamping block, so that the clamping block is clamped on the outer peripheral wall of the lens.

[0016] Furthermore, a connecting piece is connected to the threaded plate, and the connecting piece includes a mounting seat and two reinforcing ribs; the two reinforcing ribs are connected to the mounting seat, and both reinforcing ribs are installed on the threaded plate, and the lens is located between the two reinforcing ribs.

[0017] Furthermore, a camera is installed above the lens, and the camera is connected to a wiring sheet metal; a connecting circular piece is installed at the lower end of the lens, and the connecting circular piece is connected to a ring-shaped light source.

[0018] Furthermore, the lens is also provided with a point light source mounting member for mounting the point light source.

[0019] Compared with the prior art, the lens clamping device with adjustable flatness of the present invention is mechanically connected to the lens by setting an R-axis adjustment structure, and the flatness adjustment structure is mechanically connected to the R-axis adjustment structure; thereby, the lens can be adjusted in terms of flatness and R-axis, effectively improving the flexibility and production efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but should not constitute a limitation of the present invention.

[0021] Figure 1 : A three-dimensional assembly diagram of the lens clamping device with adjustable flatness according to the present invention;

[0022] Figure 2 : Another three-dimensional combination diagram of the lens clamping device with adjustable flatness of the utility model;

[0023] Figure 3 : A three-dimensional exploded view of the lens clamping device with adjustable flatness of the utility model;

[0024] Figure 4 : A partial exploded perspective view of the lens clamping device with adjustable flatness according to the present invention;

[0025] Figure 5 : A partial cross-sectional view of the lens clamping device with adjustable flatness of the present invention. DETAILED DESCRIPTION

[0026] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0027] like Figure 1 and Figure 2 As shown, the lens clamping device with adjustable flatness of the present invention includes a threaded plate 1, a flatness adjustment mechanism, an R-axis adjustment structure and a lens 2; wherein, the lens 2 is inserted into the R-axis adjustment structure, the R-axis adjustment structure is mounted on the threaded plate 1, and the flatness adjustment mechanism connects the threaded plate 1 and the R-axis connection mechanism.

[0028] like Figures 2 to 4As shown, the R-axis adjustment structure includes a clamping block 3, an adjustment flange 4, two micrometer knobs 5, and a connecting plate 6; the upper surface of the connecting plate 6 is connected to the lower surface of the threaded plate 1, and the bottom surface is connected to the adjustment flange 4. The clamping block 3 is clamped to the outer peripheral wall of the lens 2 and is disposed within the adjustment flange 4; the lens 2 extends upward through the connecting plate 6 and the threaded plate 1 and downward through the adjustment flange 4. The two micrometer knobs 5 are disposed opposite each other on the connecting plate 6; the two micrometer knobs 5 are used to push the adjustment flange 4 to the left and right, respectively, causing the adjustment flange 4 to rotate, driving the lens 2 to rotate, thereby achieving R-axis adjustment of the lens 2.

[0029] Specifically, the body 601 of the connecting plate 6 is provided with a through hole 602 for the lens 2 to pass through. A block 603 is connected to the sidewall of the body 601 of the connecting plate 6. Extending from the block 603 are two opposing mounting arms 604, forming a receiving slot 605 between the two mounting arms 604. Each micrometer knob 5 is mounted on a respective mounting arm 604 and is equipped with a push rod 501, both of which extend into the receiving slot 605.

[0030] The adjustment flange 4 includes a connecting portion 401, which extends downward to form a mounting portion 402. The connecting portion 401 is connected to the lower surface of the threaded plate 1. The clamping block 3 is mounted within the mounting portion 402. The mounting portion 402 is provided with screw holes 403. Screws passing through the screw holes 403 push against the clamping block 3, thereby clamping the clamping block 3 against the outer wall of the lens 2. Furthermore, the outer wall of the mounting portion 402 is connected to a connecting block 7, which is protruding from the connecting block 7 and has an adjustment block 8 protruding into the receiving groove 605. The adjustment block 8 is located between the two push rods 501 of the micrometer knob 5.

[0031] The R-axis adjustment process of lens 2 is as follows:

[0032] By rotating the two micrometer knobs 5 respectively, the push rod 501 of each micrometer knob 5 is pressed against the adjustment block 8, and the adjustment block 8 drives the connecting block 7, so that the connecting block 7 drives the mounting portion 402, thereby driving the adjustment flange 4 to rotate slightly to the left or right, and then driving the lens 2 to rotate slightly to the left or right, thereby realizing R-axis adjustment of the lens 2.

[0033] like Figure 1 、 Figure 3 and Figure 5 As shown, the flatness adjustment mechanism connects the threaded plate 1 and the connecting plate 6 , and includes a reference component and two adjustment components, wherein the reference component and the two adjustment components are arranged in a triangle and are disposed on the periphery of the lens 2 .

[0034] Specifically, the body 101 of the threaded plate 1 is provided with a through-hole 102 for the lens 2 to pass through, with the upper end of the lens 2 protruding from the through-hole 102. A reference assembly and two adjustment assemblies are arranged in a triangular shape around the periphery of the through-hole 102. The reference assembly includes a reference bolt 9, a reference spring 10, a reference upper circular member 11, and a reference lower circular member 12. The reference upper circular member 11 is mounted on the lower surface of the threaded plate 1, and a mounting groove 606 is provided on the upper surface of the connecting plate 6. The reference lower circular member 12 is mounted within the mounting groove 606. The reference upper circular member 11 is located directly above the reference lower circular member 12 and is in spherical contact with the reference lower circular member 12. The reference bolt 9 extends downward through the threaded plate 1, the reference upper circular member 11, and the reference lower circular member 12, and its lower end is threadedly connected to the connecting plate 6. The reference spring 10 is sleeved over the reference bolt 9 and positioned between its head and the upper surface of the threaded plate 1.

[0035] Each adjustment assembly includes an adjustment bolt 13, an adjustment screw 14, an adjustment spring 15, and an adjustment circular piece 16. The adjustment screw 14 is inserted through the threaded plate 1, with the bottom of the adjustment screw 14 protruding from the lower surface of the threaded plate 1. Furthermore, the outer wall of the adjustment screw 14 is provided with a fine thread 140, and the adjustment screw 14 and the threaded plate 1 are screwed together via the fine thread 140. A spherical contact surface 141 is provided at the bottom of the adjustment screw 14. A groove 607 is provided on the upper surface of the connecting plate 6, and the adjustment circular piece 16 is installed in the groove 607. The spherical contact surface 141 is located directly above the adjustment circular piece 16 and is in spherical contact with the adjustment circular piece 16. The adjustment bolt 13 is inserted through the adjustment screw 14, and the adjustment bolt 13 passes downward through the adjustment circular piece 16, with the lower end being screwed to the connecting plate 6. The adjustment spring 15 is sleeved on the adjustment bolt 13 and is located between the head of the adjustment bolt 13 and the top of the adjustment screw 14.

[0036] By setting a fine-pitch thread connection between the adjusting screw 14 and the threaded plate 1, higher precision adjustment can be achieved; by setting the reference upper circular part 11 and the reference lower circular part 12 to maintain spherical contact, and by setting the spherical contact surface 141 at the bottom of the adjusting screw 14 and the adjusting circular part 16 to maintain spherical contact, stepless adjustment of flatness can be achieved; by setting the reference spring 10 and the adjusting spring 15 to provide pre-tightening force, there is no need to frequently disassemble and assemble the bolts (reference bolt 9 and adjusting bolt 13) during the adjustment process.

[0037] Preferably, in one embodiment, the reference spring 10 and the adjustment spring 15 are both butterfly springs; it is understandable that in other embodiments, the reference spring 10 and the adjustment spring 15 may also be coil springs, but the present invention is not limited thereto.

[0038] The flatness adjustment principle of lens 2 is as follows:

[0039] First, according to the software setting requirements, tighten the reference bolt 9 to pre-adjust the reference assembly; then, based on the reference assembly, adjust the flatness of the connecting plate 6 by adjusting the two adjustment assemblies to adjust the flatness of the lens 2; the details are as follows:

[0040] Turning the adjusting screw 14 causes the threaded plate 1 to move up and down relative to the adjusting screw 14 , driving the connecting plate 6 to swing slightly on the horizontal plane, thereby driving the lens 2 to swing slightly on the horizontal plane, changing the flatness of the lens 2 and achieving flatness adjustment of the lens 2.

[0041] The standard for adjusting the flatness is based on the imaging effect of the camera 18 , and if the image is clear and complete, the flatness is adjusted properly.

[0042] Furthermore, a connector 17 is connected to the threaded plate 1, which mounts the lens 2 clamping device to a rack or lifting platform. Connector 17 includes a mounting base 170 and two reinforcing ribs 171. Ribs 171 are connected to mounting base 170 and mounted to the threaded plate 1, with the lens 2 positioned between the two ribs 17.

[0043] In addition, a camera 18 is mounted above the lens 2, which is connected to a wiring sheet metal 19. A connecting circular piece 20 is mounted at the lower end of the lens 2, which is connected to a ring light source. The lens 2 is also provided with a point light source mounting piece 21 for mounting a point light source.

[0044] In summary, the lens clamping device with adjustable flatness of the present invention has the following advantages:

[0045] 1. By providing an R-axis adjustment structure and mechanically connecting it to the lens 2, when adjusting the R-axis, the two micrometer knobs 5 are rotated separately so that the push rod 501 of each micrometer knob 5 abuts the adjustment block 8. The adjustment block 8 drives the connecting block 7, which drives the mounting portion 402, thereby driving the adjustment flange 4 to rotate slightly to the left or right, and then driving the lens 2 to rotate slightly to the left or right, thereby achieving R-axis adjustment of the lens 2.

[0046] 2. By setting a mechanical connection between the flatness adjustment structure and the R-axis adjustment structure, when adjusting the flatness, by screwing the adjusting bolt 13, the connecting plate 6 is caused to swing slightly relative to the threaded plate 1 on the horizontal plane, driving the lens 2 to swing slightly on the horizontal plane, thereby achieving flatness adjustment of the lens 2.

[0047] 3. By setting a fine-pitch thread connection between the adjusting screw 14 and the threaded plate 1, higher precision adjustment can be achieved; by setting the reference upper circular part 11 and the reference lower circular part 12 to maintain spherical contact, and by setting the spherical contact surface 140 at the bottom of the adjusting screw 14 to maintain spherical contact with the adjusting circular part 16, stepless adjustment of flatness can be achieved; by setting the reference spring 10 and the adjusting spring 15 to provide pre-tightening force, there is no need to frequently disassemble and assemble the bolts during the adjustment process.

[0048] As long as it does not violate the creative idea of ​​the present invention, any combination of various different embodiments of the present invention should be regarded as the content disclosed by the present invention; within the technical concept of the present invention, any simple modification of the technical solution and any combination of different embodiments that do not violate the creative idea of ​​the present invention should be within the protection scope of the present invention.

Claims

1. A lens clamping device with adjustable flatness, characterized in that: include: A threaded plate (1), a flatness adjustment mechanism, and a lens (2); the flatness adjustment mechanism connects the threaded plate (1) and the lens (2); A connecting plate (6) is connected below the threaded plate (1), the lens (2) is connected to the connecting plate (6), and the lens (2) passes through the threaded plate (1) and the connecting plate (6) at the top and bottom; the flatness adjustment mechanism includes a reference component and two adjustment components, and the reference component and the two adjustment components are arranged in a triangle on the periphery of the lens (2); The reference assembly includes a reference bolt (9), the lower end of which passes through the threaded plate (1) and is screwed to the connecting plate (6); each of the adjustment assemblies includes an adjustment bolt (13) and an adjustment screw (14), the adjustment screw (14) is passed through the threaded plate (1), and the outer peripheral wall of the adjustment screw (14) is provided with a fine thread (140), and the adjustment screw (14) and the threaded plate (1) are screwed together through the fine thread (140); the adjustment bolt (13) is passed through the adjustment screw (14), and the lower end of the adjustment bolt (13) passes through the threaded plate (1) and is screwed to the connecting plate (6).

2. The lens clamping device with adjustable flatness according to claim 1, wherein: The reference assembly further comprises a reference spring (10), a reference upper circular piece (11) and a reference lower circular piece (12); the reference upper circular piece (11) is mounted on the lower surface of the threaded plate (1), the upper surface of the connecting plate (6) is provided with a mounting groove (606), and the reference lower circular piece (12) is mounted in the mounting groove (606); the reference upper circular piece (11) is located directly above the reference lower circular piece (12) and is in spherical contact with the reference lower circular piece (12); the reference bolt (9) passes downward through the threaded plate (1), the reference upper circular piece (11) and the reference lower circular piece (12), and the lower end is screwed to the connecting plate (6); the reference spring (10) is sleeved on the reference bolt (9) and is located between the head of the reference bolt (9) and the upper surface of the threaded plate (1).

3. The lens clamping device with adjustable flatness according to claim 1, wherein: Each of the adjustment components further includes an adjustment spring (15) and an adjustment circular piece (16); the bottom of the adjustment screw (14) passes through the lower surface of the threaded plate (1), and the bottom of the adjustment screw (14) is provided with a spherical contact surface (141); the upper surface of the connecting plate (6) is provided with a groove (607), and the adjustment circular piece (16) is installed in the groove (607); the spherical contact surface (141) is located directly above the adjustment circular piece (16) and contacts the spherical surface of the adjustment circular piece (16); the adjustment bolt (13) passes downward through the adjustment circular piece (16), and the lower end is screwed to the connecting plate (6); the adjustment spring (15) is sleeved on the adjustment bolt (13) and is located between the head of the adjustment bolt (13) and the top of the adjustment screw (14).

4. The lens holding device with adjustable flatness according to claim 1, wherein: The flatness-adjustable lens clamping device further comprises an R-axis adjustment structure, the R-axis adjustment structure comprising a clamping block (3), an adjustment flange (4), and two micrometer knobs (5); the adjustment flange (4) is connected to a connecting plate (6); the clamping block (3) is clamped on the outer peripheral wall of the lens (2), and the clamping block (3) is arranged in the adjustment flange (4); the lens (2) passes through the connecting plate (6) and the threaded plate (1) upwards and passes through the adjustment flange (4) downwards; the two micrometer knobs (5) are arranged on the connecting plate (6) in a relative manner, and the two micrometer knobs (5) are used to push the adjustment flange (4) to the left and right respectively.

5. The lens clamping device with adjustable flatness according to claim 4, wherein: The plate body (601) of the connecting plate (6) is provided with a through hole (602) for the lens (2) to pass through, and the side wall of the plate body (601) is connected to a block (603), and the block (603) extends with two mounting arms (604) arranged opposite to each other, and a receiving groove (605) is formed between the two mounting arms (604); each micrometer knob (5) is mounted on each mounting arm (604), and each micrometer knob (5) is provided with a push rod (501), and the two push rods (501) are both extended and located in the receiving groove (605).

6. The lens holding device with adjustable flatness according to claim 5, wherein: The adjusting flange (4) includes a connecting portion (401), which extends downward to form a mounting portion (402); the connecting portion (401) is connected to the lower surface of the threaded plate (1), and the clamping block (3) is mounted in the mounting portion (402); the outer peripheral wall of the mounting portion (402) is connected to a connecting block (7), and the connecting block (7) is provided with an adjusting block (8) protruding from the adjusting block (8), which protrudes into the accommodating groove (605), and the adjusting block (8) is located between the two push rods (501).

7. The lens holding device with adjustable flatness according to claim 6, wherein: The mounting portion (402) is provided with a screw hole (403), and a screw passes through the screw hole (403) to press the clamping block (3) tightly, so that the clamping block (3) is clamped on the outer peripheral wall of the lens (2).

8. The lens clamping device with adjustable flatness according to claim 1, wherein: The threaded plate (1) is further connected to a connecting piece (17), the connecting piece (17) comprising a mounting seat (170) and two reinforcing ribs (171); the two reinforcing ribs (171) are connected to the mounting seat (170), and the two reinforcing ribs (171) are both mounted on the threaded plate (1), and the lens (2) is located between the two reinforcing ribs (171).

9. The lens clamping device with adjustable flatness according to claim 1, wherein: A camera (18) is installed above the lens (2), and the camera (18) is connected to a wiring sheet metal (19); a connecting circular piece (20) is installed at the lower end of the lens (2), and the connecting circular piece (20) is connected to an annular light source.

10. The lens holding device with adjustable flatness according to claim 1, wherein: The lens (2) is also provided with a point light source mounting member (21) for mounting the point light source.

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