LDI exposure machine for circuit board

Abstract

The utility model discloses an LDI exposure machine for a circuit board, and relates to the technical field of exposure machines, the LDI exposure machine comprises a base, a workbench and an exposure head, the middle part of the top end of the base is in butt joint with the workbench, tracks are welded on two sides of the outer wall of the base, and the outer walls of the tracks are in sliding connection with a rack. When the LDI exposure machine for the circuit board is used, the included angle between the transmission rod and the lifting seat is changed through the positioning mechanism, so that the limiting seat drives the positioning seat to move in the direction close to the workbench until the rubber wheel is attached to the outer wall of the substrate, and then the substrate is limited from the four edges at the same time so as to be centered and positioned; therefore, the influence of the precision of the intermedium drilling machine on the substrate is prevented, the deviation risk is reduced, the substrate can be limited in several directions according to the working condition on site, the positioning flexibility of the substrate is further improved, and when the LDI exposure machine for the circuit board is used, the effects of convenient centering positioning, deviation prevention and flexible adjustment are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of exposure machine, concretely is a kind of LDI exposure machine for circuit board. BACKGROUND

[0002] Circuit board, also known as printed circuit board, is the support structure of electronic components, which realizes the electrical connection between electronic components through pre-designed conductive paths;And LDI exposure machine is a kind of laser direct imaging equipment, which is a kind of high-precision equipment for printed circuit board production, suitable for producing high-density interconnection board and standard PCB, and is the key equipment in medium-high-end PCB manufacturing.

[0003] In order to produce circuit board, it is necessary to assist through LDI exposure machine, first, place the substrate on the workbench on the top surface of the base, then start the exposure head on the motor compartment, so that the high-energy laser beam generated by the ultraviolet laser directly scans the substrate coated with photoresist, and then forms a circuit pattern, and in this process, the rack moves along the track, the motor compartment moves along the rack, and then the exposure head moves to form the circuit pattern;But in the process of using exposure machine, it is positioned by grabbing the four through holes of the board corner, but the four through holes are processed by drilling equipment, which affects the offset accuracy of the pattern relative to the hole, thereby increasing the risk of offset, thereby affecting the use of exposure machine. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of LDI exposure machine for circuit board to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of LDI exposure machine for circuit board, including base, workbench and exposure head, the top end middle part of the base is butt joint with workbench, and the outer wall of base is welded with track, and the outer wall of track is slidably connected with rack, the top end of the rack is slidably connected with motor compartment, and the bottom end of motor compartment is installed with exposure head, and the exposure head is provided with positioning mechanism below, the positioning mechanism includes servo motor, first bevel gear, second bevel gear, threaded column, lifting seat, guide rod, fixed sleeve, transmission rod, limit seat, fixed column, spring, positioning seat and rubber wheel, the bottom end of the inner wall of base is installed with servo motor, and the output end of servo motor is butt joint with first bevel gear, and the outer wall of first bevel gear is engaged with second bevel gear, the inside of second bevel gear is welded with threaded column, and the outer wall middle part of threaded column is threadedly connected with lifting seat.

[0006] Preferably, the inside of the lifting seat is slidably connected with guide rod, and the top end of the guide rod is welded with fixed sleeve, and the top end of the fixed sleeve is welded with the inner wall of base, the threaded column is connected with the inner wall of base through bearing seat on both sides.

[0007] Preferably, the top end of the lifting seat is connected with a transmission rod through a rotating seat, and the top end of the transmission rod is rotationally connected with a limiting seat.

[0008] Preferably, the guide rods are distributed at equal angles inside the lifting seat, and a fixed column is slidingly connected inside the limiting seat.

[0009] Preferably, a spring is sleeved on the middle part of the outer wall of the fixed column, and a positioning seat is connected on the top end of the outer wall.

[0010] Preferably, a rubber wheel is butt-jointed on one side of the outer wall of the positioning seat, and a guide cavity corresponding to the limiting seat is formed on the top end of the base.

[0011] Preferably, an elastic telescopic mechanism is formed between the limiting seat and the spring, and the outer wall of the fixed column is welded with a fixed sleeve on one side.

[0012] Preferably, a rotating pin is welded on the middle part of the bottom end of the positioning seat, and a rubber strip is connected on the side of the positioning seat away from the rubber wheel.

[0013] Preferably, a clamping seat is penetratingly connected inside the positioning seat, and a fixed hole corresponding to the clamping seat is formed on the top end of the limiting seat.

[0014] Preferably, a slide rail is welded on the side of the top end of the base close to the workbench, a limiting strip is slidingly connected inside the slide rail, a positioning plate is connected on the top end of the outer wall of the limiting strip, and the positioning plates are distributed at equal angles on the base.

[0015] Compared with the prior art, the line board LDI exposure machine uses the positioning mechanism to change the angle between the transmission rod and the lifting seat, so that the limiting seat drives the positioning seat to move towards the workbench, until the rubber wheel is attached to the outer wall of the base plate, and then the base plate is simultaneously limited from four sides to be centrally positioned, thereby preventing the base plate from being affected by the precision of the intermediate drilling machine, reducing the risk of deviation, and selecting several directions to limit the base plate according to the working conditions on site, thereby improving the flexibility of the base plate positioning, and playing the roles of convenient central positioning, deviation prevention and flexible adjustment when the line board LDI exposure machine is used. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of the utility model;

[0017] Figure 2 It is a top view of the utility model;

[0018] Figure 3 It is a sectional view of the utility model;

[0019] Figure 4 is a schematic view of the three-dimensional structure of the positioning mechanism of the utility model;

[0020] Figure 5 is a schematic view of the three-dimensional structure of the limiting seat of the utility model from the top;

[0021] Figure 6 is a schematic view of the three-dimensional structure of the lifting seat of the utility model from the top;

[0022] Figure 7 is a schematic view of the three-dimensional structure of the limiting seat of the utility model from the top;

[0023] Figure 8 is a schematic view of the three-dimensional structure of the sliding rail of the utility model.

[0024] In the figure: 1, base; 2, workbench; 3, track; 4, rack; 5, motor compartment; 6, exposure head; 7, positioning mechanism; 701, servo motor; 702, first bevel gear; 703, second bevel gear; 704, threaded column; 705, lifting seat; 706, guide rod; 707, fixed sleeve; 708, transmission rod; 709, limiting seat; 710, fixed column; 711, spring; 712, positioning seat; 713, rubber wheel; 8, rotating pin; 9, rubber strip; 10, clamping seat; 11, sliding rail; 12, limiting strip; 13, positioning plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] Please refer to Figures 1-7The utility model provides a technical scheme: a kind of LDI exposure machine for circuit board, including pedestal 1, workstation 2 and exposure head 6, pedestal 1 top middle part is butt joint with workstation 2, and pedestal 1 outer wall both sides are welded with track 3, and track 3 outer wall is slidably connected with rack 4, rack 4 top end is slidably connected with motor bin 5, and motor bin 5 bottom end is equipped with exposure head 6, and exposure head 6 below is provided with positioning mechanism 7, positioning mechanism 7 includes servo motor 701, first bevel gear 702, second bevel gear 703, threaded column 704, lifting seat 705, guide rod 706, fixed sleeve 707, transmission rod 708, limit seat 709, fixed column 710, spring 711, positioning seat 712 and rubber wheel 713, pedestal 1 inner wall bottom end is equipped with servo motor 701, and servo motor 701 output end is butt joint with first bevel gear 702, and first bevel gear 702 outer wall is engaged with second bevel gear 703, second bevel gear 703 inside is welded with threaded column 704, and threaded column 704 outer wall middle part is threadedly connected with lifting seat 705;Lifting seat 705 inside is slidably connected with guide rod 706, and guide rod 706 top end is welded with fixed sleeve 707, and fixed sleeve 707 top end is welded with pedestal 1 inner wall, threaded column 704 upper and lower sides are connected with the inner wall of pedestal 1 by bearing seat;Lifting seat 705 top end is connected with transmission rod 708 by rotating seat, and transmission rod 708 top end is rotatably connected with limit seat 709;Guide rod 706 is distributed at the inside of lifting seat 705 with included angle, and fixed column 710 is slidably connected in limit seat 709;Spring 711 is sleeved on the middle part of the outer wall of fixed column 710, and outer wall top end is connected with positioning seat 712;Positioning seat 712 outer wall one side is butt joint with rubber wheel 713, and the top of pedestal 1 is provided with the guide cavity corresponding with limit seat 709;Limit seat 709, fixed column 710 and spring 711 form elastic telescopic mechanism, one side of the outer wall of fixed column 710 is welded with fixed sleeve 707;Limit seat 709 and pedestal 1 are slidably connected, one side of the outer wall of spring 711 and the inner wall of pedestal 1 are fixedly connected, the bottom end of guide rod 706 is welded with pedestal 1, and transmission rod 708 is distributed on lifting seat 705 with included angle.

[0027] In specific implementation, during the production of circuit boards using an LDI exposure machine, to reduce the risk of misalignment, after the substrate is placed on the top surface of the worktable 2, the servo motor 701 is started to drive the first bevel gear 702 to rotate. Since the first bevel gear 702 and the second bevel gear 703 are meshed, the rotation of the first bevel gear 702 drives the rotation of the second bevel gear 703. Then, the rotation of the second bevel gear 703 drives the threaded column 704 to rotate. The rotation of the threaded column 704 drives the lifting seat 705 to move downward. Since the lifting seat 705 is slidably connected to the guide rod 706, the movement of the lifting seat 705 is guided by the guide rod 706 at the bottom of the fixed sleeve 707, so that the lifting seat 705 moves smoothly. Since the lifting seat 705 and the transmission rod 708 are rotatably connected, the movement of the lifting seat 705 will drive the transmission rod 708 to rotate.

[0028] At this time, the angle between the transmission rod 708 and the lifting seat 705 changes, which in turn generates a pulling force on the limiting seat 709, causing the limiting seat 709 to move along the fixed column 710 towards the worktable 2. At this time, the spring 711 resets and generates elastic force to assist the limiting seat 709 in moving. Since the limiting seat 709 is connected to the positioning seat 712, the movement of the limiting seat 709 will drive the positioning seat 712 to move together until the rubber wheel 713 is in contact with the outer wall of the substrate, thereby limiting the substrate from all four sides at the same time, so that the substrate is centered on the top surface of the worktable 2, thereby preventing it from being affected by the accuracy of the intermediate medium drilling machine, reducing the risk of displacement, and thus playing a role in facilitating centering and preventing displacement when using the LDI exposure machine for circuit boards.

[0029] See Figure 1 , Figure 2 , Figures 5-8 It can be seen that a rotating pin 8 is welded to the middle of the bottom end of the positioning seat 712, and a rubber strip 9 is connected to the side of the positioning seat 712 away from the rubber wheel 713; a snap-fit ​​seat 10 is connected through the inside of the positioning seat 712, and fixing holes corresponding to the snap-fit ​​seat 10 are opened on both sides of the top of the limiting seat 709; a slide rail 11 is welded to the side of the top of the base 1 near the worktable 2, and a limiting strip 12 is slidably connected inside the slide rail 11, and a positioning plate 13 is connected to the top of the outer wall of the limiting strip 12, and the positioning plates 13 are distributed at equal angles on the base 1; a through hole corresponding to the rotating pin 8 is opened in the middle of the top of the limiting seat 709, the limiting strip 12 is in the shape of "I", and the limiting strip 12 and the positioning plate 13 are fixedly connected.

[0030] In actual implementation, in the process of producing a circuit board by an LDI exposure machine, the clamping seat 10 is first moved upward to disengage from the limiting seat 709, and then the fixation of the positioning seat 712 is cancelled, and then the positioning seat 712 is rotated to rotate along the rotating pin 8 until the position of the rubber strip 9 and the rubber wheel 713 is exchanged, and then the clamping seat 10 is moved downward to penetrate the positioning seat 712 and abut against the limiting seat 709, and then the limiting seat 709 is fixed to prevent it from rotating at will, and then when the limiting seat 709 drives the positioning seat 712 to move, the rubber strip 9 is in contact with the outer wall of the substrate to be centrally positioned;

[0031] When the limiting of the positioning seat 712 on one side needs to be cancelled, the positioning seat 712 is first moved upward to disengage from the limiting seat 709, and then the limiting strip 12 is moved to abut against the slide rail 11 on the side, at this time, the slide rail 11 and the limiting strip 12 are in clamping connection, and then the positioning plate 13 is limited on the side, and then the outer wall of the substrate can be in contact with the outer wall of the positioning plate 13, and then the rubber wheel 713 or the rubber strip 9 on other directions can be used to limit it, and then according to the working condition on site, the substrate can be limited by several directions, and then the flexibility of the substrate positioning is improved, and the substrate positioning is corresponded to the working demand on site, so that the LDI exposure machine for the circuit board plays a role of being convenient and flexible to adjust.

[0032] In summary, when the LDI exposure machine for the circuit board is used, the substrate is first placed on the workbench 2 on the top surface of the base 1, and then the exposure head 6 on the motor compartment 5 is started, so that the high-energy laser beam generated by the ultraviolet laser directly scans the substrate coated with a photoresist, and then a circuit pattern is formed, and in this process, the rack 4 moves along the track 3, the motor compartment 5 moves along the rack 4, and then the exposure head 6 moves to form the circuit pattern, which is the prior art and will not be described in detail. The limiting seat 709 drives the positioning seat 712 to move towards the workbench 2 by the positioning mechanism 7, and then the substrate is limited from four sides at the same time to be centrally positioned, so that the substrate is prevented from being affected by the precision of the intermediate medium drilling machine, and then the risk of deviation is reduced, and according to the working condition on site, the substrate can be limited by several directions, so that the flexibility of the substrate positioning is improved. The contents not described in detail in the description belong to the prior art known to those skilled in the art.

[0033] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A circuit board LDI exposure machine, comprising a base (1), a workbench (2) and an exposure head (6), characterized in that: The top end of the base (1) is connected to the workbench (2), and the outer wall of the base (1) is welded with rails (3), and the outer wall of the rails (3) is slidably connected with a rack (4), the top end of the rack (4) is slidably connected with a motor compartment (5), the bottom end of the motor compartment (5) is installed with an exposure head (6), and the bottom of the exposure head (6) is provided with a positioning mechanism (7), the positioning mechanism (7) comprises a servo motor (701), a first bevel gear (702), a second bevel gear (703), a threaded column (704), a lifting seat (705), a guide rod (706), a fixed sleeve (707), a transmission rod (708), a limiting seat (709), a fixed column (710), a spring (711), a positioning seat (712) and a rubber wheel (713), the inner wall of the base (1) is installed with a servo motor (701), the output end of the servo motor (701) is connected with a first bevel gear (702), the outer wall of the first bevel gear (702) is meshed with a second bevel gear (703), the inside of the second bevel gear (703) is welded with a threaded column (704), and the outer wall of the threaded column (704) is threadedly connected with a lifting seat (705) in the middle.

2. The LDI exposure machine for a wiring board according to claim 1, characterized by: The inside of the lifting seat (705) is slidably connected with a guide rod (706), the top end of the guide rod (706) is welded with a fixed sleeve (707), and the top end of the fixed sleeve (707) is welded with the inner wall of the base (1), the threaded column (704) is connected with the inner wall of the base (1) through a bearing seat.

3. The LDI exposure machine for a wiring board according to claim 2, characterized by: The top end of the lifting seat (705) is connected with a transmission rod (708) through a rotating seat, and the top end of the transmission rod (708) is rotatably connected with a limiting seat (709).

4. The LDI exposure machine for a wiring board according to claim 3, characterized by: The guide rod (706) is distributed at an angle in the lifting seat (705), and the inside of the limiting seat (709) is slidably connected with a fixed column (710).

5. The LDI exposure machine for a wiring board according to claim 4, characterized by: The outer wall of the fixed column (710) is sleeved with a spring (711) in the middle, and the outer wall is connected with a positioning seat (712) at the top end.

6. The LDI exposure machine for a wiring board according to claim 5, characterized by: The outer wall of the positioning seat (712) is connected with a rubber wheel (713) on one side, and the top end of the base (1) is provided with a guide cavity corresponding to the limiting seat (709).

7. The LDI exposure machine for a circuit board according to claim 6, characterized by: The limiting seat (709), the fixed column (710) and the spring (711) constitute an elastic expansion mechanism, and the outer wall of the fixed column (710) is welded with the fixed sleeve (707) on one side.

8. The LDI exposure machine for a wiring board according to claim 7, characterized by: The bottom end of the positioning seat (712) is welded with a rotating pin (8) in the middle, and the side away from the rubber wheel (713) of the positioning seat (712) is connected with a rubber strip (9).

9. The LDI exposure machine for a wiring board according to claim 8, characterized by: The inside of the positioning seat (712) is connected with a clamping seat (10), and the top end of the limiting seat (709) is provided with a fixed hole corresponding to the clamping seat (10).

10. The LDI exposure machine for a circuit board according to claim 9, characterized by: The base (1) top end is welded with slide rail (11) near the one side of workbench (2), and the slide rail (11) inside is slidably connected with limiting strip (12), and the limiting strip (12) outer wall top end is connected with positioning plate (13), the positioning plate (13) is distributed on the base (1) with equal angle.

Images