Lens adjusting device and PCB laser processing equipment

Abstract

The utility model discloses a lens adjusting device and PCB laser processing equipment, the lens adjusting device comprises a limiting module, a lens seat, a lens bracket and a fine tuning module, the lens seat is provided with a first limiting groove, a second limiting groove and a third limiting groove, the lens bracket is elastically installed on the lens seat through the limiting module, and the lens bracket is used for installing a lens; the fine adjustment module comprises a first positioning assembly, a second positioning assembly and a third positioning assembly, one end of the first positioning assembly is installed on the spectacle frame, the other end of the first positioning assembly runs in the first limiting groove, the first positioning assembly is used as an adjustment base point of the spectacle frame, and one end of the second positioning assembly is installed on the spectacle frame; one end of the second positioning assembly is installed on the mirror bracket, the other end of the second positioning assembly runs in the second limiting groove, the second positioning assembly is used for adjusting the angle of the mirror bracket on the mirror base, one end of the third positioning assembly is installed on the mirror bracket, the other end of the third positioning assembly runs in the third limiting groove, and the third positioning assembly is used for locking the adjusted mirror bracket on the mirror base.

Description

Technical Field

[0001] The utility model relates to the technical field of laser processing, in particular to a lens adjustment device and PCB board laser processing equipment. Background Art

[0002] At present, in the use of optical instruments, the main function of the reflector is to change the light by reflecting the light. The different inclination angles of the reflector will result in different reflection angles for the same incident light, which will lead to different paths of the reflected light. During the assembly process, due to assembly errors, the reflector often deviates from the optical path, affecting the performance of the optical path system. Therefore, the reflector needs to be adjusted.

[0003] The existing published patent document publication number is CN206489316 U and is named as a new type of reflector adjustment device, including a base, a rotating disk rotatably installed at the center of the upper surface of the base, a side shading plate is vertically installed at the two side edges of the base, an arc-shaped baffle is fixedly installed on the top of the rotating disk, a reflector frame rotating shaft is symmetrically installed between the two side walls of the arc-shaped baffle, a reflector frame is connected between the two reflector frame rotating shafts, vertical card slots are symmetrically installed on the two side inner walls of the reflector frame, a reflector is inserted in the symmetrical card slots on both sides, a connecting shaft is fixedly installed at the center of the back of the reflector frame, an adjusting rod is rotatably installed on the connecting shaft, an adjusting long hole is vertically opened at the center of the arc-shaped baffle, and a number of slots are opened on both sides of the adjusting long hole from top to bottom, and the angle is adjusted by inserting the adjusting rod into the corresponding slot.

[0004] However, this reflector adjustment device has a complex structure and can only perform angle adjustment by inserting an adjustment rod into a corresponding slot, which can only perform a limited number of angle adjustments and cannot achieve precise adjustment of the reflector, thereby limiting the scope of use of the reflector adjustment device. Utility Model Content

[0005] The purpose of the utility model is to provide a lens adjustment device and a PCB board laser processing equipment to solve the technical problem that the existing reflector adjustment device has a complex structure and can only perform angle adjustment by inserting an adjustment rod into a corresponding slot, and can only perform a limited number of angle adjustments, and cannot achieve precise adjustment of the reflector, thereby limiting the scope of use of the reflector adjustment device.

[0006] The utility model provides a lens adjustment device, comprising:

[0007] Limit module;

[0008] A mirror base, wherein the mirror base is provided with a first limiting groove, a second limiting groove and a third limiting groove;

[0009] A frame, the frame is elastically mounted on the frame seat through the limiting module, and the frame is used for mounting lenses;

[0010] A fine-tuning module includes a first positioning component, a second positioning component and a third positioning component, wherein one end of the first positioning component is mounted on the frame, and the other end of the first positioning component runs in the first limiting groove, and the first positioning component is used as an adjustment base point of the frame, one end of the second positioning component is mounted on the frame, and the other end of the second positioning component runs in the second limiting groove, and the second positioning component is used to adjust the angle of the frame on the lens seat, one end of the third positioning component is mounted on the frame, and the other end of the third positioning component runs in the third limiting groove, and the third positioning component is used to lock the adjusted frame on the lens seat, and the first positioning component, the second positioning component and the third positioning component are spaced apart by rings arranged on the periphery of the lens.

[0011] Further, the first positioning assembly includes a first fastener, a first annular gasket and a positioning pin, and the frame is penetrated by a first mounting hole;

[0012] The mirror mount includes a base and a first pad installed on the base, the mirror frame is elastically installed on the base through the limiting module, the first pad and the base are enclosed to form the first limiting groove, the first limiting groove is a conical groove, the locating pin is clamped in the first mounting hole and is located at the bottom of the mirror frame, and the locating pin is provided with a first threaded hole at one end close to the mirror frame, the first fastener passes through the first annular gasket and is threadedly connected to the first threaded hole, and the locating pin slides in the first limiting groove.

[0013] Furthermore, the second positioning assembly includes a second fastener and a first nut, and the frame is further provided with a second threaded hole;

[0014] The mirror mount includes a base and a second pad installed on the base, the mirror frame is elastically installed on the base through the limiting module, the second pad and the base are enclosed to form the second limiting groove, the second limiting groove is a flat-bottomed groove, one end of the second fastener slides in the second limiting groove, the other end of the second fastener is threadedly connected to the second threaded hole and the first nut in sequence, and the first nut abuts against the mirror frame.

[0015] Furthermore, the third positioning assembly includes a third fastener and a second nut, and the frame is further provided with a third threaded hole;

[0016] The mirror mount includes a base and a third pad installed on the base, the mirror frame is elastically installed on the base through the limiting module, the third pad and the base are enclosed to form the third limiting groove, the third limiting groove is a V-shaped groove, one end of the third fastener slides in the third limiting groove, the other end of the third fastener is threadedly connected with the third threaded hole and the second nut in sequence, and the second nut abuts against the mirror frame.

[0017] Furthermore, the limiting module includes at least one limiting component, the limiting component includes a fourth fastener, a second annular gasket, a third annular gasket and a first spring, the mirror frame is also provided with at least one second mounting hole, the mirror seat is also provided with at least one fourth threaded hole, and the fourth fastener passes through the second annular gasket, the first spring, the third annular gasket and the second mounting hole in sequence and is threadedly connected to the fourth threaded hole.

[0018] Furthermore, the mirror base has an embedding hole and a light path entrance and exit channel arranged therethrough, the embedding hole is recessed and extends from the outer wall of the mirror base toward the middle part of the mirror base, the embedding hole is connected to the middle part of the light path entrance and exit channel, part of the mirror frame is located in the embedding hole, and the lens can reflect light entering from one end of the light path entrance and exit channel out from the other end of the light path entrance and exit channel.

[0019] Furthermore, the mirror base also has an inclined side surface, the mounting hole extends from the inclined side surface toward the middle recess of the mirror base, and the first limiting groove, the second limiting groove and the third limiting groove are all arranged on the inclined side surface.

[0020] Furthermore, the mirror holder includes a base and at least one dimming tool for detecting the path of the light beam, the mounting hole and the light path entry and exit channel are both provided on the base, and the dimming tool is installed on the base and arranged corresponding to the dimming tool.

[0021] Furthermore, the mirror frame includes a mirror plate, a pressure ring, at least one pressing piece and at least one locking piece, the mirror plate is elastically mounted on the mirror seat through the limiting module, the mirror plate is provided with a receiving groove, and a light inlet hole extending from the bottom wall of the receiving groove to the bottom of the mirror plate, the light inlet hole is connected to the light path entrance and exit channel, the lens and the pressure ring are sequentially mounted in the receiving groove, the pressure ring covers the lens, one end of the pressing piece is mounted on the mirror plate through the locking piece, and the other end of the pressing piece is pressed against the pressure ring.

[0022] Furthermore, the locking member includes a fifth fastener, and a second spring and a T-shaped rod located at the bottom of the mirror plate, the mirror plate is also penetrated by a third mounting hole, the pressing plate is provided with a through hole, the second spring is sleeved on the T-shaped rod, and the T-shaped rod is provided with a fifth threaded hole on a side facing the mirror plate, the fifth fastener passes through the through hole and the third mounting hole in sequence and is threadedly connected to the fifth threaded hole, and the T-shaped rod can move up and down in the third mounting hole.

[0023] Furthermore, the frame further comprises at least one positioning rod, the pressing plate further comprises at least one positioning hole, one end of the positioning rod is fixed to the mirror plate, and the other end of the positioning rod is inserted into the positioning hole.

[0024] The utility model also provides a PCB board laser processing device, and the PCB board laser processing device comprises the lens adjustment device as described above.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] The lens adjustment device of the utility model can use a fine-tuning module inside to fine-tune the lens installed on the frame, wherein the first positioning component in the fine-tuning module can be used as a frame adjustment base point, the second positioning component is used to adjust the frame angle, and the third positioning component is used to lock the adjusted frame on the lens seat, and the lens seat is correspondingly provided with a first limiting groove, a second limiting groove and a third limiting groove respectively connected to the first positioning component, the second positioning component and the third positioning component, which can realize point-line-surface adjustment of the lens to change the path of the light incident on the lens. The angle adjustment of the lens on the frame is accurate and high-precision, and multi-angle adjustment can be performed. In addition, the entire lens adjustment device has a simple structure and strong structural stability, and can be widely promoted. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of the lens adjustment device provided in the embodiment of the utility model Figure 1 ;

[0028] Figure 2 A schematic diagram of the structure of the lens adjustment device provided in the embodiment of the utility model Figure 2 ;

[0029] Figure 3 A schematic diagram of the structure of the lens adjustment device provided in the embodiment of the utility model Figure 3 ;

[0030] Figure 4 An exploded view of a lens adjustment device provided by an embodiment of the utility model equipped with a lens;

[0031] Figure 5A schematic diagram of the structure of the limit module, the fine adjustment module and part of the frame after being combined according to the embodiment of the utility model;

[0032] Figure 6 for Figure 5 Exploded diagram of

[0033] Figure 7 The structure of the mirror plate provided by the embodiment of the utility model is shown in FIG. Figure 1 ;

[0034] Figure 8 The structure of the mirror plate provided by the embodiment of the utility model is shown in FIG. Figure 2 ;

[0035] Fig. 9 A schematic diagram of the structure of a mirror holder provided in an embodiment of the utility model;

[0036] Fig.10 for Fig. 9 Exploded diagram of

[0037] Fig.11 A schematic diagram of the structure of the lens adjustment device provided by an embodiment of the utility model without the second base;

[0038] Fig.12 for Fig.11 Sectional view along line AA;

[0039] Fig.13 for Fig.11 Sectional view along line BB;

[0040] Fig.14 for Fig.11 Sectional view along line CC;

[0041] Fig.15 for Fig.11 Sectional view along line DD;

[0042] Fig.16 A schematic diagram of the structure of the tablet provided by the embodiment of the utility model;

[0043] Fig.17 A diagram showing the use status of multiple lens adjustment devices provided in an embodiment of the utility model.

[0044] In the figure:

[0045] 10. Mirror base; 11. First limiting groove; 12. Second limiting groove; 13. Third limiting groove; 14. Base; 141. First card slot; 142. Second card slot; 143. Third card slot; 144. Mounting hole; 145. Light path inlet and outlet channel; 146. Oblique side; 147. First base; 148. Second base; 149. Dimming tool; 1491. Cross; 15. First cushion block; 16. Second cushion block; 17. Third cushion block; 18. Fourth threaded hole; 20. Limiting module; 2 1. Limiting assembly; 22. Fourth fastener; 23. Second annular gasket; 24. Third annular gasket; 25. First spring; 30. Mirror frame; 31. First mounting hole; 311. First guide hole; 312. Second guide hole; 32. Second threaded hole; 33. Third threaded hole; 34. Second mounting hole; 341. Receiving slot; 342. Third guide hole; 35. Mirror plate; 351. Receiving slot; 352. Light inlet hole; 353. Slot; 354. Third mounting hole; 3541. Fourth guide hole; 3542, fifth guide hole; 355, movable plate; 356, protrusion; 3561, annular groove; 36, pressure ring; 361, pressure groove; 37, pressing sheet; 371, through hole; 372, positioning hole; 373, pressing plate; 374, handle; 38, locking member; 381, fifth fastener; 382, ​​second spring; 383, T-shaped rod; 3831, fifth threaded hole; 39, positioning rod; 40, fine-tuning module; 41, first positioning assembly; 411, first fastener; 412, Annular spring washer; 413, first annular gasket; 414, positioning pin; 4141, first threaded hole; 4142, first ball head surface; 4143, first pin rod; 4144, second pin rod; 42, second positioning assembly; 421, second fastener; 4211, second ball head surface; 422, first nut; 43, third positioning assembly; 431, third fastener; 4311, third ball head surface; 432, second nut; 50, lens; 60, light; 70, fixing plate; 71, light hole. DETAILED DESCRIPTION

[0046] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0047] See also Figures 1 to 4 ,as well as Fig.17As shown, an embodiment of the utility model discloses a lens adjustment device, which includes a lens base 10, a limiting module 20, a lens frame 30 and a fine-tuning module 40. The lens base 10 is provided with a first limiting groove 11, a second limiting groove 12 and a third limiting groove 13; the lens frame 30 is elastically mounted on the lens base 10 through the limiting module 20, and the lens frame 30 is used to install a lens 50, which can be a reflector, and the lens 50 can reflect the light 60 emitted by the laser.

[0048] The fine-tuning module 40 includes a first positioning component 41, a second positioning component 42 and a third positioning component 43. One end of the first positioning component 41 is mounted on the frame 30, and the other end of the first positioning component 41 runs in the first limiting groove 11 on the lens base 10. The first positioning component 41 can be used as an adjustment base point of the frame 30 on the lens base 10. One end of the second positioning component 42 is mounted on the frame 30, and the other end of the second positioning component 42 runs in the second limiting groove 12. The second positioning component 42 is used to adjust the angle of the frame 30 on the lens base 10. One end of the third positioning component 43 is mounted On the frame 30, the other end of the third positioning component 43 runs in the third limiting groove 13, and the third positioning component 43 is used to lock the adjusted frame 30 on the lens base 10. The first positioning component 41, the second positioning component 42 and the third positioning component 43 are spaced apart on the periphery of the lens 50. The frame 30 and the lens 50 thereon can be fine-tuned together through the fine-tuning module 40 to change the path of the light 60 incident on the lens 50. The lens 50 can be adjusted at multiple angles together with the frame 30. The angle adjustment of the lens 50 on the frame 30 is accurate and precise, and the structure of the lens adjustment device has strong stability.

[0049] Please read further Figures 4 to 14 ,as well as Fig.17As shown, in this embodiment, the first positioning assembly 41 includes a first fastener 411, an annular spring washer 412, a first annular gasket 413 and a positioning pin 414. The frame 30 is penetrated by a first mounting hole 31. The lens holder 10 includes a base 14 and a first cushion block 15 mounted on the base 14. The frame 30 is elastically mounted on the base 14 through a limiting module 20. The first cushion block 15 and the base 14 are surrounded to form the first limiting groove 11. The first limiting groove 11 is a conical groove. Specifically, the base 14 is provided with a first card groove 141. The first cushion block 15 is card-connected in the first card groove 141. The first limiting groove 11 is provided on the first cushion block 15. The first fastener 411, the annular spring washer 412 and the first annular gasket 413 are all located on the top side of the frame 30. The positioning pin 414 is a ball head. Locating pin, one end of the locating pin 414 is clamped in the first mounting hole 31 from the bottom of the frame 30, the locating pin 414 is located at the bottom of the frame 30, and the end of the locating pin 414 close to the frame 30 is provided with a first threaded hole 4141, the first fastener 411 passes through the annular spring washer 412 and the first annular gasket 413 in sequence and is threadedly connected with the first threaded hole 4141 to fix the locating pin 414 on the frame 30, the other end of the locating pin 414 has a first ball head surface 4142, the other end of the locating pin 414 is slidably installed in the first limiting groove 11 through the first ball head surface 4142 to reduce the friction between the locating pin 414 and the inner wall of the first limiting groove 11, the first positioning assembly 41 can always be at the bottom center position of the first limiting groove 11, and the first fastener 411 is a bolt.

[0050] In some embodiments, the first mounting hole 31 includes a first guide hole 311 and a second guide hole 312 which are sequentially arranged and connected from top to bottom, the inner diameter of the second guide hole 312 is larger than the inner diameter of the first guide hole 311, the positioning pin 414 includes a first pin rod 4143 and a second pin rod 4144 coaxially connected to the first pin rod 4143, the outer diameter of the second pin rod 4144 is larger than the outer diameter of the first pin rod 4143, the first ball head surface 4142 is arranged at one end of the second pin rod 4144 away from the first pin rod 4143, the first threaded hole 4141 is arranged at one end of the first pin rod 4143 away from the second pin rod 4144, the first pin rod 4143 is located in the first guide hole 311, and a portion of the second pin rod 4144 is located in the second guide hole 312.

[0051] The second positioning assembly 42 includes a second fastener 421 and a first nut 422, and the frame 30 is also penetrated by a second threaded hole 32; the lens holder 10 also includes a second cushion block 16 installed on the base 14, the second cushion block 16 and the base 14 are enclosed to form the second limiting groove 12, the second limiting groove 12 is a flat bottom groove, specifically, the base 14 is also provided with a second clamping groove 142, the second cushion block 16 is clamped in the second clamping groove 142, the second cushion block 16 is a planar structure, the second fastener 421 is a ball head screw, the second fastener 421 is provided with a second ball head surface 4211, one end of the second fastener 421 slides in the second limiting groove 12 through the second ball head surface 4211, the other end of the second fastener 421 is threadedly connected with the second threaded hole 32 and the first nut 422 in sequence, and the first nut 422 is a knurled nut, the first nut 422 abuts on the frame 30 to fix the adjusted second fastener 421.

[0052] The third positioning assembly 43 includes a third fastener 431 and a second nut 432. The mirror frame 30 is also penetrated by a third threaded hole 33. The mirror base 10 also includes a third cushion block 17 mounted on the base 14. The third cushion block 17 and the base 14 are enclosed to form the third limiting groove 13. The third limiting groove 13 is a V-shaped groove. Specifically, the base 14 is also provided with a third clamping groove 143. The third cushion block 17 is clamped in the third clamping groove 143. The third limiting groove 13 is provided on the third cushion block 17. The third fastener 431 is a ball head screw. The third fastener 431 is provided with a third ball head surface 4311. The third fastener One end of the firmware 431 is slidably installed in the third limiting groove 13 through the third ball head surface 4311, and the other end of the third fastener 431 is threadedly connected with the third threaded hole 33 and the second nut 432 in sequence, and the second nut 432 is a knurled nut, and the second nut 432 abuts against the frame 30 to fix the adjusted third fastener 431. The first cushion block 15, the second cushion block 16 and the third cushion block 17 are all made of stainless steel to ensure the rigidity of the contact parts. The third positioning assembly 43, the first positioning assembly 41 and the second positioning assembly 42 are arranged in an "L" shape on the frame 30.

[0053] In this embodiment, in order to ensure the adjustment accuracy of the frame 30 and remove unnecessary degrees of freedom during adjustment, the frame 30 adopts a point-line-plane adjustment and positioning mode. The main body of the frame 30 is made of 2A12-T4 aluminum alloy to ensure strength while reducing the weight of the frame 30. Stainless steel pads are used at the contact with the positioning component, and a combination of various stainless steel pads such as the first limiting groove 11 type, the third limiting groove 13 type and the plane type are used to achieve the point-line-plane adjustment and positioning mode. The lens adjustment device uses the contact point between the first positioning component 41 and the first pad 15 as the adjustment base point, and the second fastener 421 in the second positioning component 42 is screwed to achieve the swing of the frame 30, thereby achieving the adjustment of the angle of the frame 30 and the lens 50 thereon. The adjustment angle of the frame 30 and the lens 50 thereon can reach about ±3 degrees. When the adjustment is completed, the first nut 422 on the second positioning component 42 and the second nut 432 on the third positioning component 43 are tightened, and the principle of double nut anti-loosening is used to ensure the stability of the lens adjustment device.

[0054] The limiting module 20 includes at least one limiting component 21. In the present embodiment, the number of the limiting components 21 is three. The limiting components 21 include a fourth fastener 22, a second annular gasket 23, a third annular gasket 24 and a first spring 25. The mirror frame 30 is also penetrated by at least one second mounting hole 34. The mirror base 10 is provided with at least one fourth threaded hole 18. The number of the second mounting hole 34 and the fourth threaded hole 18 is also three. The fourth fastener 22 passes through the second annular gasket 23, the first spring 25, the third annular gasket 24 and the second mounting hole 34 in sequence and is threadedly connected with the fourth threaded hole 18, so that the mirror frame 30 has a certain downward pressure under the action of the first spring 25 in the limiting module 20. The fourth fastener 22 is a pin bolt, and the first spring 25 can be a rectangular spring.

[0055] In some embodiments, the second mounting hole 34 includes a receiving groove 341 and a third guide hole 342 which are sequentially arranged from top to bottom, the inner diameter of the receiving groove 341 is larger than the inner diameter of the third guide hole 342, and the third annular gasket 24 and part of the first spring 25 are both located in the receiving groove 341.

[0056] In the present embodiment, the stability of the structure of the frame 30 is mainly ensured by the limit module 20. The frame 30 adopts a combination of three fourth fasteners 22 and three first springs 25. The first spring 25 is a heavy-loaded rectangular spring that can provide a large elastic force when compressed. The fourth fastener 22 is a stepped bolt with a pin. When locking, thread glue is added to the contact portion between the frame 30 and the fourth fastener 22, and the gap between the contact portion of the fourth fastener 22 and the frame 30 is less than 0.01mm. Combined with the elastic force provided by the first spring 25, it can effectively prevent the screws from moving when the frame 30 is vibrated, thereby causing the position of the frame 30 to shift. This locking method can greatly improve the stability of the frame 30.

[0057] The mirror base 10 has an embedding hole 144 and an optical path entrance and exit channel 145. The optical path entrance and exit channel 145 is arranged throughout the mirror base 10. The optical path entrance and exit channel 145 is "L"-shaped. The optical path entrance and exit channel 145 is recessed from one side of the mirror base 10 toward the middle of the mirror base 10 and then extends through the bottom of the mirror base 10 after being bent. The embedding hole 144 extends from the outer wall of the mirror base 10 toward the middle of the mirror base 10. The embedding hole 144 is connected with the middle of the optical path entrance and exit channel 145. Part of the mirror frame 30 and the lens 50 are located in the embedding hole 144. The lens 50 on the mirror frame 30 can reflect the light 60 entering from one end of the optical path entrance and exit channel 145 out from the other end of the optical path entrance and exit channel 145 to steer and adjust the path of the light 60.

[0058] The mirror base 10 also has an inclined side surface 146, and the embedding hole 144 extends from the inclined side surface 146 toward the middle of the mirror base 10. The fourth threaded hole 18, the first limiting groove 11, the second limiting groove 12 and the third limiting groove 13 are all provided on the inclined side surface 146. The mirror frame 30 is elastically mounted on the inclined side surface 146 through the limiting module 20 to reduce the overall height of the mirror base 10.

[0059] The base 14 includes a first base 147 and a second base 148. The lens base 10 also includes at least one dimming fixture 149. The dimming fixture 149 is used to detect the path of the light beam. In this embodiment, the number of the dimming fixture 149 is one. The first base 147 is installed on the top of the second base 148. The light path entry and exit channel 145 passes through the first base 147 and the second base 148 in sequence. The oblique side surface 146 is provided on the first base 147. The dimming fixture 149 is installed on the first base 147. The cross 1491 in the dimming fixture 149 is provided corresponding to the light path entry and exit channel 145. Of course, the number of the dimming fixture 149 can also be two. The two dimming fixtures 149 are respectively installed on the first base 147 and the second base 148 and correspond to the two ends of the light path entry and exit channel 145 respectively. When multiple lens adjustment devices are in use, they can be as follows Fig.17 As shown, two adjacent lens adjustment devices are respectively installed on both sides of a fixing plate 70 having a light-through hole 71 .

[0060] Please read further Figures 4 to 8 ,as well as Figures 15 to 17As shown, the mirror frame 30 includes a mirror plate 35, a pressure ring 36, at least one pressure piece 37 and at least one locking piece 38. In the present embodiment, the number of the pressure piece 37 and the locking piece 38 are both two. The mirror plate 35 is elastically mounted on the mirror base 10 through the limiting module 20. The mirror plate 35 is provided with a receiving groove 351 and a light inlet 352 which passes through the bottom wall of the receiving groove 351 to the bottom of the mirror plate 35. The light inlet 352 is communicated with the optical path inlet and outlet channel 145. The lens 50 and the pressure ring 36 are sequentially mounted in the receiving groove 351. The pressure ring 36 covers the lens 50. One end of the pressure piece 37 is mounted on the mirror plate 35 through the locking piece 38, and the other end of the pressure piece 37 is pressed against the pressure ring 36 to fix the lens 50 on the mirror plate 35 through the pressure ring 36.

[0061] In some embodiments, the mirror plate 35 is further provided with two slots 353 for human hands to insert into, and the two slots 353 are arranged opposite to each other and are both connected to the receiving groove 351 to facilitate the rapid disassembly of the pressure ring 36 and the lens 50.

[0062] The locking member 38 includes a fifth fastener 381, a second spring 382 and a T-bar 383. The second spring 382 and the T-bar 383 are both located at the bottom of the mirror plate 35. The mirror plate 35 is also penetrated by a third mounting hole 354. The pressing plate 37 is provided with a through hole 371. The second spring 382 is sleeved on the T-bar 383. The T-bar 383 is provided with a fifth threaded hole 3831 on a side facing the mirror plate 35. The fifth fastener 381 passes through the through hole 371 and the third mounting hole 354 in sequence from the top side of the mirror plate 35 and is threadedly connected with the fifth threaded hole 3831. The fifth fastener 381 is a bolt. The T-bar 383 can move up and down in the third mounting hole 354, so that when the lens 50 is disassembled, the pressing plate 37 can be lifted to withdraw the restriction on the pressing ring 36.

[0063] In some embodiments, the third mounting hole 354 includes a fourth guide hole 3541 and a fifth guide hole 3542 which are sequentially arranged from top to bottom, the inner diameter of the fourth guide hole 3541 is smaller than the inner diameter of the fifth guide hole 3542, the second spring 382 and a part of the T-shaped rod 383 are both located in the fifth guide hole 3542, and the other part of the T-shaped rod 383 is located in the fourth guide hole 3541, and the T-shaped rod 383 can slide up and down in the third mounting hole 354.

[0064] When the T-bar 383 is tightened, the second spring 382 is compressed to provide a reaction force to compress the pressing plate 37. The pressing plate 37 is a steel plate with a certain elastic force. The pressing plate 37 is elastically deformed under the force to compress the pressing ring 36, thereby compressing the lens 50. When the lens 50 needs to be removed, the pressing plate 37 is lifted and twisted at a certain angle so that the pressing plate 37 and the pressing ring 36 are offset, and the lens 50 can be taken out. The advantage of this lens 50 fixing method is that it can ensure that the pressing force on the lens 50 is large enough and almost consistent every time the lens 50 is assembled.

[0065] The lens adjustment device also includes a sealing ring. The mirror plate 35 includes a movable plate 355 and a protrusion 356 protruding from the bottom of the movable plate 355. One end of the limiting module 20 and the fine-tuning module 40 are both installed on the movable plate 355, and the other end is connected to the lens base 10, so that the movable plate 355 is suspended above the lens base 10. The protrusion 356 is inserted into the embedding hole 144. The accommodating groove 351 is recessed and extends from the outer wall of the movable plate 355 toward one side of the protrusion 356. The light inlet 352 extends from the bottom wall of the accommodating groove 351 to the bottom of the protrusion 356. The outer wall of the protrusion 356 is provided with an annular groove 3561. The sealing ring is installed in the annular groove 3561 and forms a seal with the inner wall of the embedding hole 144 to prevent light 60 from entering and exiting from the gap between the lens frame 30 and the lens base 10.

[0066] In some embodiments, a pressing groove 361 is respectively formed on both sides of the pressing ring 36 , and a portion of the pressing sheet 37 is located in the pressing groove 361 , so that the pressing ring 36 can be quickly installed.

[0067] The frame 30 also includes at least one positioning rod 39, and the pressing plate 37 is also penetrated by at least one positioning hole 372. One end of the positioning rod 39 is fixed on the mirror plate 35, and the other end is inserted into the positioning hole 372 to prevent the pressing plate 37 from rotating relative to the pressing ring 36 during use.

[0068] In some embodiments, the pressing sheet 37 includes a pressing plate 373 and a handle portion 374 for a person to grasp, the handle portion 374 is vertically connected to the pressing plate 373 , and the through hole 371 and the positioning hole 372 are both provided on the pressing plate 373 .

[0069] The utility model also discloses a PCB board laser processing device, and the PCB board laser processing device comprises the lens adjusting device as described above.

[0070] Working principle of the lens adjustment device:

[0071] When the lens 50 needs to be assembled, the lens 50 is placed in the receiving groove 351 of the mirror plate 35, and then the pressure ring 36 is also placed in the receiving groove 351, the pressure ring 36 covers the lens 50, and then the pressing piece 37 is fixed to the mirror plate 35 through the locking piece 38, and the pressing piece 37 also presses the pressing ring 36 in the receiving groove 351, and the positioning rod 39 on the mirror plate 35 is inserted into the positioning hole 372 on the pressing piece 37, and then the limiting component 21 is passed through the second mounting hole 34 of the mirror plate 35 and is threadedly connected to the mirror base 10, so that the mirror plate 35 is elastically mounted on the mirror base 10, and finally, the first positioning component 41 in the fine-tuning module 40 is installed on the first mounting hole 34 of the mirror plate 35. On the mounting hole 31, the first positioning component 41 abuts against the first limiting groove 11 in the lens holder 10, the second positioning component 42 is installed on the second threaded hole 32 of the lens plate 35, the second positioning component 42 abuts against the second limiting groove 12 in the lens holder 10, the third positioning component 43 is installed on the third threaded hole 33 of the lens plate 35, and the third positioning component 43 abuts against the third limiting groove 13 in the lens holder 10, thereby completing the assembly connection; when it is necessary to remove the lens 50, lift the pressing piece 37 to disengage the positioning rod 39 on the lens holder 10 from the positioning hole 372 on the pressing piece 37, and then rotate the lens 50 to a certain angle, and then the pressing ring 36 and the lens 50 can be taken out in turn;

[0072] When the lens 50 needs to be adjusted, the lens adjustment device uses the contact point between the first positioning component 41 and the first cushion block 15 as the adjustment base point, loosens the first nut 422 on the second positioning component 42 and the second nut 432 on the third positioning component 43, and realizes the swing of the frame 30 by screwing the second fastener 421 in the second positioning component 42, thereby realizing the angle adjustment of the frame 30 and the lens 50 thereon. The adjustment angle of the frame 30 and the lens 50 thereon can reach ±3 degrees. When the adjustment is completed, tighten the first nut 422 and the second nut 432, and use the principle of double nut anti-loosening to ensure the structural stability of the lens adjustment device.

[0073] In summary, the fine-tuning module 40 can be used inside the lens adjustment device of the utility model to fine-tune the lens 50 installed on the frame 30, wherein the first positioning component 41 in the fine-tuning module 40 can be used as the adjustment base point of the frame 30, the second positioning component 42 is used to adjust the angle of the frame 30, and the third positioning component 43 is used to lock the adjusted frame 30 on the lens base 10, and the lens base 10 is correspondingly provided with a first limiting groove 11, a second limiting groove 12 and a third limiting groove 13 which are respectively abutted against the first positioning component 41, the second positioning component 42 and the third positioning component 43, so that the lens 50 can be adjusted in points, lines and surfaces to change the path of the light 60 incident on the lens 50, the angle adjustment of the lens 50 on the frame 30 is accurate and high in precision, and can be adjusted at multiple angles, and the entire lens adjustment device has a simple structure, a large adjustable angle, low cost, low assembly difficulty, strong structural stability, and is easy to disassemble and maintain, and can be widely promoted.

[0074] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A lens adjustment device, characterized in that: include: Limit module; A mirror base, wherein the mirror base is provided with a first limiting groove, a second limiting groove and a third limiting groove; A frame, the frame is elastically mounted on the frame seat through the limiting module, and the frame is used for mounting lenses; A fine-tuning module includes a first positioning component, a second positioning component and a third positioning component, wherein one end of the first positioning component is mounted on the frame, and the other end of the first positioning component runs in the first limiting groove, and the first positioning component is used as an adjustment base point of the frame, one end of the second positioning component is mounted on the frame, and the other end of the second positioning component runs in the second limiting groove, and the second positioning component is used to adjust the angle of the frame on the lens seat, one end of the third positioning component is mounted on the frame, and the other end of the third positioning component runs in the third limiting groove, and the third positioning component is used to lock the adjusted frame on the lens seat, and the first positioning component, the second positioning component and the third positioning component are spaced by rings arranged on the periphery of the lens.

2. The lens adjustment device according to claim 1, characterized in that: The first positioning assembly includes a first fastener, a first annular gasket and a positioning pin, and the frame is penetrated by a first mounting hole; The mirror mount includes a base and a first pad installed on the base, the mirror frame is elastically installed on the base through the limiting module, the first pad and the base are enclosed to form the first limiting groove, the first limiting groove is a conical groove, the locating pin is clamped in the first mounting hole and is located at the bottom of the mirror frame, and the locating pin is provided with a first threaded hole at one end close to the mirror frame, the first fastener passes through the first annular gasket and is threadedly connected to the first threaded hole, and the locating pin slides in the first limiting groove.

3. The lens adjustment device according to claim 1, characterized in that: The second positioning assembly includes a second fastener and a first nut, and the frame is further provided with a second threaded hole; The mirror mount includes a base and a second pad installed on the base, the mirror frame is elastically installed on the base through the limiting module, the second pad and the base are enclosed to form the second limiting groove, the second limiting groove is a flat-bottomed groove, one end of the second fastener slides in the second limiting groove, the other end of the second fastener is threadedly connected to the second threaded hole and the first nut in sequence, and the first nut abuts against the mirror frame.

4. The lens adjustment device according to claim 1, characterized in that: The third positioning assembly includes a third fastener and a second nut, and the frame is further provided with a third threaded hole; The mirror mount includes a base and a third pad installed on the base, the mirror frame is elastically installed on the base through the limiting module, the third pad and the base are enclosed to form the third limiting groove, the third limiting groove is a V-shaped groove, one end of the third fastener slides in the third limiting groove, the other end of the third fastener is threadedly connected with the third threaded hole and the second nut in sequence, and the second nut abuts against the mirror frame.

5. The lens adjustment device according to claim 1, characterized in that: The limiting module includes at least one limiting component, and the limiting component includes a fourth fastener, a second annular gasket, a third annular gasket and a first spring. The mirror frame is also provided with at least one second mounting hole, and the mirror base is also provided with at least one fourth threaded hole. The fourth fastener passes through the second annular gasket, the first spring, the third annular gasket and the second mounting hole in sequence and is threadedly connected to the fourth threaded hole.

6. The lens adjustment device according to claim 1, characterized in that: The mirror base has an embedding hole and a light path entrance and exit channel that is arranged through it. The embedding hole extends from the outer wall of the mirror base toward the middle of the mirror base. The embedding hole is connected to the middle of the light path entrance and exit channel. Part of the mirror frame is located in the embedding hole. The lens can reflect light entering from one end of the light path entrance and exit channel out from the other end of the light path entrance and exit channel.

7. The lens adjustment device according to claim 6, characterized in that: The mirror base also has an inclined side surface, the mounting hole extends from the inclined side surface toward the middle of the mirror base, and the first limiting groove, the second limiting groove and the third limiting groove are all arranged on the inclined side surface.

8. The lens adjustment device according to claim 6, characterized in that: The mirror holder comprises a base and at least one dimming tool for detecting the path of the light beam, the mounting hole and the light path inlet and outlet channel are both arranged on the base, and the dimming tool is installed on the base and arranged corresponding to the dimming tool.

9. The lens adjustment device according to claim 6, characterized in that: The mirror frame includes a mirror plate, a pressure ring, at least one pressing piece and at least one locking piece. The mirror plate is elastically mounted on the mirror seat through the limiting module. The mirror plate is provided with a receiving groove and a light inlet hole extending from the bottom wall of the receiving groove to the bottom of the mirror plate. The light inlet hole is communicated with the light path inlet and outlet channel. The lens and the pressure ring are sequentially mounted in the receiving groove. The pressure ring covers the lens. One end of the pressing piece is mounted on the mirror plate through the locking piece, and the other end of the pressing piece is pressed against the pressure ring.

10. The lens adjustment device according to claim 9, characterized in that: The locking member includes a fifth fastener, and a second spring and a T-shaped rod located at the bottom of the mirror plate. The mirror plate is also penetrated by a third mounting hole, the pressing plate is provided with a through hole, the second spring is sleeved on the T-shaped rod, and a fifth threaded hole is provided on a side of the T-shaped rod facing the mirror plate. The fifth fastener passes through the through hole and the third mounting hole in sequence and is threadedly connected to the fifth threaded hole, and the T-shaped rod can move up and down in the third mounting hole.

11. The lens adjustment device according to claim 9, characterized in that: The frame further comprises at least one positioning rod, the pressing plate further comprises at least one positioning hole, one end of the positioning rod is fixed to the mirror plate, and the other end of the positioning rod is inserted into the positioning hole.

12. A PCB laser processing device, characterized in that: The PCB board laser processing equipment includes the lens adjustment device as described in any one of claims 1 to 11.

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