CN212734665U

CN212734665U - Automatic focusing structure of FPC cutting equipment

Info

Publication number: CN212734665U
Application number: CN202021359964.2U
Authority: CN
Inventors: 张斌; 罗豪
Original assignee: Xifan Semiconductor Wuxi Co ltd
Current assignee: Xifan Semiconductor Wuxi Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-03-19
Anticipated expiration: 2030-07-10

Abstract

The utility model belongs to the technical field of the FPC equipment and specifically relates to an automatic focusing structure of FPC cutting equipment is related to, which comprises a frame, be equipped with the laser instrument in the frame, the beam expanding subassembly of setting at the laser instrument outgoing end, the turning subassembly of setting at the beam expanding subassembly outgoing end, be equipped with the processing platform in the frame, be equipped with the crossbeam in the frame, sliding connection has the mount pad on the crossbeam, the fixed reflection subassembly of fixedly connected with on the mount pad, fixed reflection subassembly sets up the outgoing end at the turning subassembly, sliding connection has movable reflection subassembly on the mount pad, the outgoing end at fixed reflection subassembly is connected to movable reflection subassembly, be connected with infrared distance meter on two lateral walls of box, the outgoing end of movable reflection subassembly is connected with the mirror assembly that shakes. This application has real-time adjustment galvanometer field lens subassembly height, makes the distance the same throughout between transmission port and the FPC board of treating processing to make the facula drop on the FPC board that needs the cutting, improve the effect of cutting effect.

Description

Automatic focusing structure of FPC cutting equipment

Technical Field

The application relates to the field of FPC (flexible printed circuit) equipment, in particular to an automatic focusing structure of FPC cutting equipment.

Background

The FPC is a Flexible Printed Circuit (FPC) made of polyimide or polyester film as a base material, and has high reliability. The high-density light-weight LED lamp has the characteristics of high wiring density, light weight, thin thickness and good bending property. The ultraviolet laser FPC cutting equipment adopts ultraviolet laser to cut FPC materials, utilizes the characteristics of ultraviolet light, has higher precision and better cutting effect than the traditional long wavelength cutting machine, and utilizes a high-energy laser source and an accurate control laser beam to effectively improve the processing speed and obtain more accurate processing results.

In the related art, referring to fig. 1, the optical pickup device includes a frame 1, a laser 11 disposed on the frame 1, a beam expanding assembly 12 connected to an exit end of the laser 11, a turning assembly 13 connected to an exit end of the beam expanding assembly 12, and a galvanometer field lens assembly 18 connected to an output end of the turning assembly 13, wherein a bottom of the galvanometer field lens assembly 18 is connected to a transmitting port 181, and a processing table 14 is disposed below the galvanometer field lens assembly 18.

The laser 11 emits laser, after entering the beam expanding assembly 12 for expanding, the laser angle is changed through the turning assembly 13, then the laser enters the galvanometer field lens assembly 18 for beam processing, so that the light beam entering the galvanometer field lens assembly 18 is collected and focused into a range capable of being cut, and a light spot is emitted from the emission port 181 and acts on the FPC positioned below the galvanometer field lens assembly 18, the processing table 14 is connected on the rack 1 in a sliding manner along the length direction of the rack 1, the galvanometer field lens assembly 18 is connected on the rack 1 in a sliding manner along the width direction of the rack 1, and along with the movement of the processing table 14 and the galvanometer field lens assembly 18, the galvanometer field lens assembly 18 can cut any position of the FPC board on the processing table 14.

In order to enable the galvanometric field lens assembly to receive the light beam leaving from the turning assembly, the receiving end of the galvanometric field lens assembly and the transmitting end of the turning assembly are positioned at the same height, and the galvanometric field lens assembly and the turning assembly cannot move relatively in the vertical direction.

In view of the above-mentioned related technologies, the inventor believes that since laser cutting is high-precision processing, there is a defect that when the processing table and the galvanometer field lens assembly move relatively in the length and width directions of the frame, the distance between the emission port and the FPC board changes during the cutting process, so that laser generated by the emission port cannot form a light spot on the FPC board to be cut, and the cutting effect is poor.

SUMMERY OF THE UTILITY MODEL

In order to adjust the height of the field lens assembly of the galvanometer in real time, the distance between the transmitting port and the FPC board to be processed is the same all the time, so that light spots fall on the FPC board to be cut, the cutting quality is improved, and the application provides an automatic focusing structure of FPC cutting equipment.

The application provides an automatic focusing structure of FPC cutting equipment adopts following technical scheme:

the utility model provides an automatic focusing structure of FPC cutting equipment, includes the frame, sets up laser instrument in the frame, set up at the beam expanding subassembly of laser instrument outgoing end, set up the turn subassembly at beam expanding subassembly outgoing end, be equipped with processing platform, its characterized in that in the frame: the frame is provided with a crossbeam, the crossbeam is connected with a mounting seat in a sliding manner, the mounting seat is fixedly connected with a fixed reflection assembly, the fixed reflection assembly comprises a first box body and a first reflector arranged in the first box body, the fixed reflection assembly is arranged at the emergent end of a turning assembly, the mounting seat is connected with a movable reflection assembly in a sliding manner, the movable reflection assembly is connected at the emergent end of the fixed reflection assembly, the movable reflection assembly comprises a second box body and a second reflector arranged in the second box body, the side walls of the second box body are connected with an infrared distance meter, the output end of the infrared distance meter is arranged towards the direction of a processing table, the emergent end of the movable reflection assembly is connected with a field lens assembly, the bottom of the field lens assembly is connected with a transmitting port, the transmitting port faces the processing table, and a connecting piece is arranged between the fixed reflection assembly and the movable reflection assembly, the infrared distance meter is characterized in that a driving assembly for driving the movable reflection assembly to move in the vertical direction is arranged on the mounting seat, and the infrared distance meter is electrically connected with the driving assembly.

By adopting the technical scheme, the laser emits laser, the laser is expanded by the beam expanding assembly, the expanded beam enters the turning assembly, the irradiation direction of the beam is changed, the beam enters the fixed reflection assembly after flying for a section, the path of the beam is changed, the beam enters the movable reflection assembly, the light path is changed again, then the beam enters the field lens assembly, the beam becomes a light spot after passing through the field lens assembly, the light spot is emitted from the emitting port and acts on the FPC board at the top of the processing table to cut the FPC board, the infrared distance meter is arranged towards the processing table in the cutting process to monitor the distance between the emitting port and the processing table, when the distance between the emitting port and the processing table changes, the driving assembly drives the movable reflection assembly to move on the mounting seat to change the relative position between the movable reflection assembly and the fixed reflection assembly, thereby change the distance between the last galvanometer field lens subassembly of connecting of movable reflection assembly and the processing platform to adjust the distance between transmission port and the processing platform, make the distance between transmission port and the FPC board of treating processing the same all the time, thereby make the facula fall on the FPC board that needs the cutting, further improve cutting quality.

Preferably, the driving assembly comprises a first motor fixedly connected to the mounting seat, a threaded rod connected to an output end of the first motor, and a moving block in threaded connection with the threaded rod, and the moving block is connected with the second box body.

Through adopting above-mentioned technical scheme, the threaded rod is rotated in the work of motor one drive, and the movable block with threaded rod threaded connection removes along threaded rod length direction, drives the second box of being connected with the movable block and removes along vertical direction to drive movable reflection subassembly and remove for fixed reflection subassembly, drive the mirror field lens subassembly that shakes and transmit port and remove to being close to or keeping away from the workstation direction, thereby make the facula stably drop on the FPC board.

Preferably, the side wall of the moving block is connected with an installation plate, and the box body two-way is connected to the installation plate through bolts.

Through adopting above-mentioned technical scheme, box two is installed on the mounting panel to be connected with the movable block.

Preferably, a guide rail is arranged on the mounting seat along the vertical direction, and the mounting plate is connected to the guide rail in a sliding manner.

Through adopting above-mentioned technical scheme, when needs activity reflection assembly removed, the mounting panel slided on the guide rail, and the guide rail plays direction and limiting displacement to the removal of mounting panel.

Preferably, drive assembly is including setting up the connecting plate that the mount pad is close to two one sides of box, rotating drive wheel on the connecting plate, connecting a plurality of teeth on the drive wheel lateral wall, sliding connection drive plate on the connecting plate, seting up logical groove at drive plate center and connecting the protruding tooth piece on leading to two relative lateral walls of groove, the drive plate lateral wall is connected with box two, be equipped with drive wheel pivoted power pack on the mount pad, it is a plurality of tooth sets up along drive wheel circumferencial direction, and is a plurality of the arc that tooth encloses on the drive wheel is the minor arc, the drive plate slides along vertical direction, protruding tooth piece sets up on leading to two lateral walls of groove vertical direction.

Through adopting above-mentioned technical scheme, power component drive wheel rotates, and the protruding tooth piece with the tooth meshing on the drive wheel drives the drive plate and removes along vertical direction, drives the connecting plate and removes along vertical direction to drive the removal of box two, further adjust the distance between transmission port and the processing platform.

Preferably, the power assembly comprises a second motor connected to the mounting seat, a first bevel gear connected to the output end of the second motor, a second bevel gear rotatably connected to the mounting seat, and a driving shaft connected to the second bevel gear, the first bevel gear is meshed with the second bevel gear, the driving shaft is coaxially connected with the second bevel gear, and one end of the driving shaft, which is far away from the second bevel gear, is coaxially connected with the driving wheel.

By adopting the technical scheme, the motor II drives the bevel gear I to rotate, the bevel gear II meshed with the bevel gear I rotates along with the bevel gear I, and the driving wheel is driven to synchronously rotate through the driving shaft, so that the teeth on the driving wheel drive the protruding tooth blocks to move, and the driving plate further moves along the vertical direction.

Preferably, the connecting piece is a corrugated pipe, and two ends of the corrugated pipe are fixedly connected with the first box body and the second box body respectively.

By adopting the technical scheme, the corrugated pipe is used for connecting the first box body and the second box body, the light beam leaving the first box body passes through the corrugated pipe and enters the second box body, and when the relative positions of the first box body and the second box body move, the corrugated pipe is stretched or contracted between the first box body and the second box body.

Preferably, a shading rod is connected between the galvanometer field lens assembly and the second box body.

Through adopting above-mentioned technical scheme, the shading stick plays the connection effect on the one hand, and on the other hand can prevent external light source interference.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the infrared distance meter and the driving assembly for driving the movable reflection assembly to move, the infrared distance meter can measure the distance between the movable reflection assembly and the FPC board on the processing table, namely the distance between the galvanometer field lens assembly and the FPC board on the processing table, so that signals are transmitted to the driving assembly, the driving assembly drives the movable reflection assembly and the galvanometer field lens assembly connected with the movable reflection assembly to move in the vertical direction, the distance between the galvanometer field lens assembly and the processing table is adjusted, the distance between the galvanometer field lens assembly and a workpiece to be processed on the processing table is always the same, light spots can further stably fall on the FPC board to be processed, and the processing effect is improved;

2. through the arrangement of the spring, a connecting effect can be achieved between the fixed reflection assembly and the movable reflection assembly, and meanwhile, a buffering effect is achieved on the movement of the movable reflection assembly relative to the fixed reflection assembly;

3. through the setting of shading stick, can prevent that laser from receiving external light source interference.

Drawings

Fig. 1 is a schematic view of a structure in the related art.

Fig. 2 is a schematic view of the entire structure of an autofocus structure of the FPC cutting device according to embodiment 1 of the present application.

Fig. 3 is a schematic view of the fixed reflection unit and the movable reflection unit in embodiment 1 of the present application.

Fig. 4 is a schematic cross-sectional view of the drive assembly in embodiment 1 of the present application.

Fig. 5 is a schematic view of the entire structure of an autofocus structure of the FPC cutting device according to embodiment 2 of the present application.

Fig. 6 is a schematic view of an explosion structure at the driving assembly in embodiment 2 of the present application.

Fig. 7 is a schematic view of the connection between the fixed movable component and the mounting base in embodiment 2 of the present application.

Description of reference numerals: 1. a frame; 11. a laser; 12. a beam expanding assembly; 13. a turning assembly; 14. a processing table; 15. a fixed reflective component; 151. a first box body; 152. a first reflecting mirror; 16. a movable reflective component; 161. a second box body; 162. a second reflecting mirror; 163. an infrared range finder; 17. a cross beam; 171. a mounting seat; 172. a guide rail; 18. a field lens assembly; 181. a transmit port; 19. a bellows; 2. a shading rod; 3. a drive assembly; 31. a first motor; 32. a threaded rod; 33. a moving block; 331. mounting a plate; 34. a connecting plate; 35. a drive wheel; 36. teeth; 37. a drive plate; 38. a through groove; 39. a raised tooth block; 4. a power assembly; 41. a second motor; 42. a first bevel gear; 43. a second bevel gear; 44. a drive shaft.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses FPC cutting equipment's automatic focusing structure.

Example 1

Referring to fig. 2, the optical fiber laser module includes a frame 1, a laser 11 disposed on the frame 1, a beam expanding assembly 12 disposed at an exit end of the laser 11, a turning assembly 13 disposed at an exit end of the beam expanding assembly 12, a fixed reflecting assembly 15 disposed at an exit end of the turning assembly 13, a movable reflecting assembly 16 disposed at an exit end of the fixed reflecting assembly 15, and a field lens assembly 18 disposed at an exit end of the movable reflecting assembly 16, wherein a transmitting port 181 is connected to a bottom of the field lens assembly 18.

Referring to fig. 2, a laser 11 emits laser, a laser line expands via a beam expanding assembly 12, the expanded beam enters a turning assembly 13, a beam path is changed, the beam leaves the turning assembly 13 and flies for a distance, then enters a fixed reflection assembly 15, the beam exits after changing the light path, and then enters a movable reflection assembly 16, after changing the light path again, a light shielding rod 2 is connected between the movable reflection assembly 16 and a field lens of a galvanometer, the beam passes through the light shielding rod 2 and enters a field lens assembly 18, and the beam exits from an emission port 181 after passing through the field lens of the galvanometer.

Referring to fig. 3, the fixed reflection assembly 15 includes a first case 151 and a first mirror 152 disposed in the first case 151, and the movable reflection assembly 16 includes a second case 161 and a second mirror 162 disposed in the second case 161, wherein the first mirror 152 and the second mirror 162 have an effect of changing an optical path in the first case 151 and the second case 161.

Referring to fig. 2, a processing table 14 is slidably connected to the frame 1, the processing table 14 is used for placing an FPC board to be cut, and light emitted from the emission port 181 forms a light spot and is applied to the FPC board to cut the FPC board.

Referring to fig. 3, an infrared distance meter 163 is installed on the sidewall of the second box 161 through a bolt, an infrared emission end of the infrared distance meter 163 is disposed toward the processing table 14, and the infrared distance meter 163 is used for detecting a distance between the emission port 181 and the processing table 14.

Referring to fig. 3 and 4, the frame 1 is provided with a cross beam 17, and a mounting seat 171 is slidably connected to the cross beam 17 along the length direction of the cross beam 17.

Referring to fig. 3 and 4, the mounting seat 171 is provided with a driving assembly 3 for driving the movable reflection assembly 16 to move in the vertical direction, the infrared distance meter 163 is electrically connected to the driving assembly 3, and when the infrared distance meter 163 detects that the distance between the emission port 181 and the processing table 14 is changed, the driving assembly 3 operates to adjust the movable emission assembly to move in the vertical direction, thereby adjusting the distance between the emission port 181 on the galvanometer field lens assembly 18 and the processing table 14.

Referring to fig. 3 and 4, the driving assembly 3 includes a first motor 31 fixedly connected to the mounting seat 171, a threaded rod 32 connected to an output end of the first motor 31, and a moving block 33 screwed on the threaded rod 32, the moving block 33 is fixedly connected to a mounting plate 331, and the second box 161 is mounted on the mounting plate 331 through bolts.

Referring to fig. 3, the mount 171 is provided with a guide rail 172, the guide rail 172 is disposed perpendicular to the processing table 14, and the mounting plate 331 is slidably coupled to the guide rail 172.

Referring to fig. 2 and 3, when the infrared distance meter 163 monitors that the distance between the emission port 181 and the processing table 14 changes, the first motor 31 operates to drive the threaded rod 32 to rotate, the moving block 33 in threaded connection with the threaded rod 32 moves along the length direction of the threaded rod 32, and the second box body 161 is driven to move along the vertical direction through the mounting plate 331.

Referring to fig. 3, when the mounting plate 331 moves, the mounting plate 331 always slides on the guide rail 172, and the guide rail 172 guides and restricts the movement of the mounting plate 331.

Referring to fig. 3, a connecting member is connected between the first tank 151 and the second tank 161, the connecting member is a bellows 19, two ends of the bellows 19 are respectively and fixedly connected to the first tank 151 and the second tank 161, and when the second tank 161 moves along with the mounting plate 331, the bellows 19 is in an elongated or compressed state between the first tank 151 and the second tank 161.

The implementation principle of the embodiment 1 is as follows: after the laser 11 generates laser, light beams sequentially pass through the beam expanding assembly 12, the turning assembly 13, the fixed reflecting assembly 15, the movable reflecting assembly 16 and the galvanometer field lens assembly 18 and are finally emitted from the emitting port 181, and light spots capable of cutting the FPC board are formed on the processing table 14;

the infrared distance meter 163 positioned on the side wall of the second box body 161 is used for detecting the distance between the emission port 181 and the processing table 14, when the distance between the occurrence port and the processing table 14 is reduced, the first motor 31 works to drive the threaded rod 32 to rotate, the moving block 33 in threaded connection with the threaded rod 32 moves towards one side far away from the processing table 14 along the length direction of the threaded rod 32, and at the moment, the moving block 33 drives the second box body 161 to move upwards through the mounting plate 331, so that the distance between the occurrence port and the processing table 14 is increased;

when the distance between the generation port and the processing table 14 is increased, the first motor 31 works to drive the threaded rod 32 to rotate, the moving block 33 in threaded connection with the threaded rod 32 moves towards the side close to the processing table 14 along the length direction of the threaded rod 32, and at the moment, the moving block 33 drives the second box body 161 to move downwards through the mounting plate 331, so that the distance between the generation port and the processing table 14 is increased.

Example 2

Referring to fig. 5 and 6, the present embodiment is different from embodiment 1 in that the driving assembly 3 includes a connection plate 34 disposed on a side of the mounting seat 171 adjacent to the case body 161, a driving wheel 35 rotatably coupled to the connection plate 34, a plurality of teeth 36 coupled to a side wall of the driving wheel 35, a driving plate 37 slidably coupled to the connection plate 34, a through groove 38 opened at a center of the driving plate 37, and a protruding tooth block 39 coupled to an opposite side wall of both sides of the through groove 38.

Referring to fig. 6 and 7, the plurality of teeth 36 are arranged along the circumferential direction of the driving wheel 35, the arc shape of the plurality of teeth 36 on the driving wheel 35 is a minor arc, the protruding tooth blocks 39 are arranged on two side walls in the vertical direction on the through groove 38, and the teeth 36 are engaged with the protruding tooth blocks 39.

Referring to fig. 6 and 7, the mounting seat 171 is provided with a power assembly 4 for driving the driving wheel 35 to rotate, the power assembly 4 comprises a second motor 41 connected to the mounting seat 171, a first bevel gear 42 connected to an output end of the second motor 41, a second bevel gear 43 rotatably connected to the mounting seat 171, and a driving shaft 44 coaxially connected to the second bevel gear 43, the first bevel gear 42 is meshed with the second bevel gear 43, and one end of the driving shaft 44, which is far away from the second bevel gear 43, is coaxially connected to the driving wheel 35.

Referring to fig. 6, the connection plate 34 is provided with a limit frame for limiting the deshield plate 37.

The implementation principle of the embodiment 2 is as follows: when the relative position between the emission port 181 and the processing table 14 is changed, the second motor 41 operates to rotate the first bevel gear 42, the second bevel gear 43 engaged with the first bevel gear 42 rotates, and the driving wheel 35 is driven to rotate by the driving shaft 44, and when the driving wheel 35 rotates, the driving plate 37 is driven to move up or down in the vertical direction when the driving wheel 35 is respectively engaged with the protruding tooth blocks 39 on both sides in the through groove 38.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an automatic focusing structure of FPC cutting equipment, includes frame (1), laser instrument (11), beam expanding assembly (12), the turning subassembly (13) of setting at beam expanding assembly (12) exit end of setting on frame (1) laser instrument (11) exit end, be equipped with processing platform (14) on frame (1), its characterized in that: be equipped with crossbeam (17) on frame (1), sliding connection has mount pad (171) on crossbeam (17), fixedly connected with fixed reflection subassembly (15) on mount pad (171), fixed reflection subassembly (15) include box (151) and set up speculum (152) in box (151), fixed reflection subassembly (15) set up the exit end at turning subassembly (13), sliding connection has movable reflection subassembly (16) on mount pad (171), the exit end at fixed reflection subassembly (15) is connected in movable reflection subassembly (16), movable reflection subassembly (16) include box two (161) and set up speculum two (162) in box two (161), be connected with infrared distance meter (163) on box two (161) lateral wall, infrared distance meter (163) output sets up towards processing platform (14) direction, the emergent end of activity reflection assembly (16) is connected with mirror field lens subassembly (18) that shakes, mirror field lens subassembly (18) bottom that shakes is connected with transmission port (181), transmission port (181) are towards processing platform (14), be equipped with the connecting piece between fixed reflection subassembly (15) and the activity reflection subassembly (16), be equipped with drive assembly (3) that drive activity reflection subassembly (16) removed along vertical direction on mount pad (171), infrared range finder (163) are connected with drive assembly (3) electricity.

2. The autofocus structure of FPC cutting device according to claim 1, characterized in that: the driving assembly (3) comprises a first motor (31) fixedly connected to the mounting seat (171), a threaded rod (32) connected to the output end of the first motor (31), and a moving block (33) in threaded connection with the threaded rod (32), and the moving block (33) is connected with a second box body (161).

3. The autofocus structure of FPC cutting device according to claim 2, characterized in that: the side wall of the moving block (33) is connected with an installation plate (331), and the second box body (161) is connected to the installation plate (331) through bolts.

4. The automatic focusing structure of FPC cutting equipment according to claim 3, characterized in that: and a guide rail (172) is arranged on the mounting base (171) along the vertical direction, and the mounting plate (331) is connected to the guide rail (172) in a sliding manner.

5. The autofocus structure of FPC cutting device according to claim 1, characterized in that: the driving assembly (3) comprises a connecting plate (34) arranged on one side of the mounting seat (171) close to the second box body (161), a driving wheel (35) rotating on the connecting plate (34), a plurality of teeth (36) connected to the side wall of the driving wheel (35), a driving plate (37) connected to the connecting plate (34) in a sliding manner, a through groove (38) formed in the center of the driving plate (37) and a raised tooth block (39) connected to two opposite side walls of the through groove (38), the side wall of the driving plate (37) is connected with a second box body (161), a power assembly (4) for driving a driving wheel (35) to rotate is arranged on the mounting seat (171), the teeth (36) are arranged along the circumferential direction of the driving wheel (35), the arc formed by the teeth (36) on the driving wheel (35) is a minor arc, the driving plate (37) slides along the vertical direction, and the convex tooth blocks (39) are arranged on two side walls of the through groove (38) in the vertical direction.

6. The automatic focusing structure of FPC cutting equipment according to claim 5, characterized in that: the power assembly (4) comprises a second motor (41) connected to the mounting seat (171), a first bevel gear (42) connected to the output end of the second motor (41), a second bevel gear (43) rotatably connected to the mounting seat (171) and a driving shaft (44) connected to the second bevel gear (43), the first bevel gear (42) is meshed with the second bevel gear (43), the driving shaft (44) is coaxially connected with the second bevel gear (43), and one end, away from the second bevel gear (43), of the driving shaft (44) is coaxially connected with the driving wheel (35).

7. The autofocus structure of FPC cutting device according to claim 1, characterized in that: the connecting piece is bellows (19), bellows (19) both ends respectively with box one (151) and box two (161) fixed connection.

8. The autofocus structure of FPC cutting device according to claim 1, characterized in that: a shading rod (2) is connected between the galvanometer field lens assembly (18) and the second box body (161).