Resolution improving structure of exposure machine

Abstract

The utility model relates to the technical field of exposure machines, in particular to a resolution improving structure of an exposure machine, which comprises a lamp panel, a radiator is fixedly mounted at the bottom of the lamp panel, a plurality of groups of LED lamp beads are fixedly mounted at the top of the lamp panel, and a lampshade is fixedly mounted at the top of the lamp panel and positioned on the outer sides of the LED lamp beads. Light guide covers are fixedly connected to the positions, located at the tops of the multiple sets of LED lamp beads, of the inner side of the lampshade, light gathering cylinders are fixedly installed at the positions, located above the multiple sets of light guide covers, of the top of the lampshade, and first meniscus lenses, second meniscus lenses and semi-convex lenses are sequentially installed on the inner sides of the light gathering cylinders from bottom to top. The right end of the top of the lamp panel is fixedly provided with a wiring terminal, the top of the lamp panel is fixedly connected with the radiator through a plurality of sets of fixing screws, and compared with an existing exposure machine, the light source device has the advantages that the resolution of the exposure machine can be improved, the utilization rate of a light source is improved, and the loss of emergent light is reduced through the design.

Description

Technical Field

[0001] The utility model relates to the technical field of exposure machines, and in particular to a resolution improvement structure for exposure machines. Background Art

[0002] Exposure machines are key equipment in the PCB manufacturing process. Existing exposure machines generally use metal halide lamps as light sources for curing solder mask ink on PCBs. However, metal halide lamps have high electrical power, resulting in high power consumption per unit time. Furthermore, solder mask ink cures slowly, typically taking 40-50 seconds to complete. This results in low solder mask ink curing efficiency.

[0003] There are also exposure machines that use UV LED lamp beads as light sources, such as the UV LED lamp for solder mask ink curing in a PCB exposure machine with Chinese patent publication number CN205193429U, which includes: a modular lampshade with a light-transmitting plate at the bottom; an LED substrate fixing plate disposed inside the lampshade and fixed to the side wall of the lampshade parallel to the light-transmitting plate; a diamond-like film substrate disposed inside the lampshade and fixed to the side opposite the LED substrate fixing plate and the light-transmitting plate, and having a regularly arranged array of LED lamp beads capable of generating UV light with a wavelength of 405nm-415nm;

[0004] The above exposure machine achieves the purpose of improving the solder mask ink curing efficiency of the PCB exposure machine and reducing the power consumption during the curing process. However, the ultraviolet light is constrained and shaped by the lampshade, the light source utilization rate is low, and the light output loss is large.

[0005] Therefore, it is particularly important to design an exposure machine resolution improvement structure to solve the above-mentioned defects. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the present invention designs an exposure machine resolution improvement structure, which aims to solve the technical problems of low light source utilization and large light output loss in the exposure machine under the existing technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A resolution-enhancing structure for an exposure machine comprises a lamp board, a heat sink being fixedly mounted on the bottom of the lamp board, a plurality of groups of LED lamp beads being fixedly mounted on the top of the lamp board, a lampshade being fixedly mounted on the top of the lamp board and located outside the LED lamp beads, a light guide cover being fixedly connected to the inside of the lampshade and located on the tops of the plurality of groups of LED lamp beads, a focusing tube being fixedly mounted on the top of the lampshade and located above the plurality of groups of light guide covers, and a first meniscus lens, a second meniscus lens and a semi-convex lens being sequentially mounted on the inside of the focusing tube from bottom to top.

[0009] As a preferred solution of the present invention, a wiring terminal is fixedly installed on the right end of the top of the lamp board, and the top of the lamp board is fixedly connected to the radiator through multiple sets of fixing screws.

[0010] As a preferred solution of the present invention, the radiator includes a heat sink fixedly connected to the bottom of the lamp board, the bottom of the heat sink is fixedly connected to multiple groups of heat sink fins, and the bottom of the multiple groups of heat sink fins are fixedly installed with two groups of heat sink fans.

[0011] As a preferred solution of the present invention, the left and right ends of the top of the lampshade are fixedly connected to the lamp board by a first mounting screw, ventilation holes are opened on the front and back sides of the lampshade, and protective plates are fixedly connected around the top of the lampshade.

[0012] As a preferred solution of the present invention, multiple groups of light guide covers are located between the LED lamp beads and the focusing tube, and multiple groups of LED lamp beads are located on the inner side of the bottom end of the light guide cover.

[0013] As a preferred solution of the present invention, the bottom ends of the multiple groups of the focusing tubes are fixedly connected to mounting edges, and the mounting edges are fixedly connected to the lampshade through multiple groups of second mounting screws.

[0014] As a preferred solution of the present invention, the outer sides of the first meniscus lens, the second meniscus lens and the semi-convex lens are fixedly sleeved with protective sleeves, the top of the focusing tube is threadedly connected to a mounting cover, and a positioning groove is provided on the inner side of the mounting cover at a position corresponding to the protective sleeve.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] In the present utility model, through the coordinated design of the lampshade, the light guide cover, the focusing tube, the first meniscus lens, the second meniscus lens and the semi-convex lens, when the LED lamp bead is located on the inner side of the light guide cover, the light can be gathered by the light guide cover, and the light gathered by the light guide cover is emitted and enters the interior of the focusing tube. Subsequently, the first meniscus lens and the second meniscus lens with the same curvature radius illuminate the light source emitted by the LED lamp bead onto the concave surface, shorten the focal length, increase the numerical aperture of the system, and converge into collimated light. Then, the semi-convex lens is used to illuminate the converged collimated light onto a plane to obtain further optimized collimated light, thereby achieving the purpose of improving the resolution of the exposure machine, further improving the utilization rate of the light source, and reducing the loss of light output. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the light board of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the lampshade of the utility model;

[0020] Figure 4 This is a schematic diagram of the external structure of the light collecting tube of the utility model;

[0021] Figure 5 This is a cross-sectional view of the internal structure of the light-collecting tube of the present utility model.

[0022] In the figure: 1. lamp board; 101. terminal block; 102. fixing screw; 2. radiator; 201. heat sink; 202. heat sink fin; 203. cooling fan; 3. LED lamp beads; 4. lampshade; 401. first mounting screw; 402. vent; 403. protective plate; 5. light guide; 6. focusing tube; 601. mounting edge; 602. second mounting screw; 7. first meniscus lens; 701. protective cover; 702. mounting cover; 703. positioning groove; 8. second meniscus lens; 9. semi-convex lens. DETAILED DESCRIPTION

[0023] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] Example:

[0025] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0026] A structure for improving the resolution of an exposure machine includes a lamp board 1, a radiator 2 is fixedly installed on the bottom of the lamp board 1, multiple groups of LED lamp beads 3 are fixedly installed on the top of the lamp board 1, a lampshade 4 is fixedly installed on the top of the lamp board 1 and on the outside of the LED lamp beads 3, a light guide cover 5 is fixedly connected to the inner side of the lampshade 4 and on the top of the multiple groups of LED lamp beads 3, a focusing tube 6 is fixedly installed on the top of the lampshade 4 and above the multiple groups of light guide covers 5, and a first meniscus lens 7, a second meniscus lens 8 and a semi-convex lens 9 are installed on the inner side of the focusing tube 6 in sequence from bottom to top.

[0027] First, a wiring terminal 101 is fixedly installed on the right end of the top of the lamp board 1, and the top of the lamp board 1 is fixedly connected to the radiator 2 through multiple sets of fixing screws 102. After the lamp board 1 is installed inside the exposure machine, it is quickly connected to the exposure machine drive through the wiring terminal 101, and the radiator 2 is installed on the bottom of the lamp board 1 through multiple sets of fixing screws 102 to dissipate heat for the light board 1 to ensure its normal operation.

[0028] Furthermore, the radiator 2 includes a heat sink 201 fixedly connected to the bottom of the lamp board 1, and multiple groups of heat sink fins 202 are fixedly connected to the bottom of the heat sink 201. Two groups of heat sink fans 203 are fixedly installed on the bottom of the multiple groups of heat sink fins 202. The heat sink 201 fits well with the bottom of the lamp board 1, so that the heat generated by the lamp board 1 is directly conducted to the heat sink 201, and the heat sink 201 is cooled by the heat sink fins 202 and the heat sink fans 203, thereby ensuring the normal operation of the lamp board 1.

[0029] Then, the left and right ends of the top of the lampshade 4 are fixedly connected to the lamp board 1 through the first mounting screws 401, and ventilation holes 402 are opened on the front and back sides of the lampshade 4. Protective plates 403 are fixedly connected on all four sides of the top of the lampshade 4. The lampshade 4 is installed on the lamp board 1 through the first mounting screws 401. The interior of the lampshade 4 can be dissipated through the ventilation holes 402 to prevent heat accumulation. At the same time, multiple groups of focusing tubes 6 are protected by multiple groups of protective plates 403.

[0030] Furthermore, multiple groups of light guide covers 5 are located between the LED lamp beads 3 and the focusing tube 6, and multiple groups of LED lamp beads 3 are located on the inner side of the bottom end of the light guide cover 5. When the LED lamp beads 3 are located on the inner side of the light guide cover 5, the light can be concentrated by the light guide cover 5, thereby improving the utilization rate of the light source.

[0031] Secondly, the bottom ends of the multiple groups of focusing tubes 6 are fixedly connected with mounting edges 601, and the mounting edges 601 are fixedly connected to the lampshade 4 through multiple groups of second mounting screws 602. The mounting edges 601 are fixed by the second mounting screws 602, so that the multiple groups of focusing tubes 6 are installed above the light guide cover 5.

[0032] Finally, the outer sides of the first meniscus lens 7, the second meniscus lens 8 and the semi-convex lens 9 are all fixedly sleeved with a protective sleeve 701, the top of the focusing tube 6 is threadedly connected to the mounting cover 702, and a positioning groove 703 is provided on the inner side of the mounting cover 702 at a position corresponding to the protective sleeve 701. The light gathered by the light guide 5 is emitted and enters the interior of the focusing tube 6. Subsequently, the first meniscus lens 7 and the second meniscus lens 8 with the same curvature radius irradiate the light emitted by the LED lamp bead 3 onto the concave surface, shortening the focal length, increasing the numerical aperture of the system, and converging into collimated light. Then, the semi-convex lens 9 is used to illuminate the converged collimated light onto the plane to obtain further optimized collimated light, thereby achieving the purpose of improving the resolution of the exposure machine, further improving the utilization rate of the light source, and reducing the loss of light output. At the same time, after the mounting cover 702 is removed, it is convenient to disassemble and replace the first meniscus lens 7, the second meniscus lens 8 and the semi-convex lens 9 inside.

[0033] In this embodiment, the implementation scenario is as follows: after the lamp board 1 is installed inside the exposure machine, it is quickly connected to the exposure machine drive through the terminal 101. When the lamp board 1 is working, the heat generated by the lamp board 1 is directly transferred to the heat sink 201, and the heat sink 201 is cooled by the heat dissipation fins 202 and the heat dissipation fan 203, thereby ensuring the normal operation of the lamp board 1. The lampshade 4 is installed on the lamp board 1 through the first mounting screw 401. The interior of the lampshade 4 can be cooled through the vent 402 to prevent heat accumulation. At the same time, the multiple sets of protective plates 403 are used to protect the multiple sets of focusing tubes 6. When the LED lamp beads 3 are located on the inner side of the light guide cover 5, the light guide cover 5 can focus the light, and the light focused by the light guide 5 is emitted and enters the interior of the focusing tube 6. Subsequently, the first meniscus lens 7 and the second meniscus lens 8, which have the same curvature radius, illuminate the light emitted by the LED lamp bead 3 onto the concave surface, shorten the focal length, increase the numerical aperture of the system, and converge into collimated light. Then, the semi-convex lens 9 is used to illuminate the converged collimated light on the plane to obtain further optimized collimated light, thereby achieving the purpose of improving the resolution of the exposure machine. The entire operation process is simple and convenient. Compared with the existing exposure machine, the utility model can improve the resolution of the exposure machine through design, improve the utilization rate of the light source, and reduce the loss of light output.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A structure for improving the resolution of an exposure machine, comprising a light board (1), characterized in that: A heat sink (2) is fixedly mounted on the bottom of the lamp board (1), a plurality of groups of LED lamp beads (3) are fixedly mounted on the top of the lamp board (1), a lampshade (4) is fixedly mounted on the top of the lamp board (1) and located outside the LED lamp beads (3), a light guide cover (5) is fixedly connected to the inside of the lampshade (4) and located on the top of the plurality of groups of LED lamp beads (3), a focusing tube (6) is fixedly mounted on the top of the lampshade (4) and located above the plurality of groups of light guide covers (5), and a first meniscus lens (7), a second meniscus lens (8) and a semi-convex lens (9) are sequentially mounted on the inside of the focusing tube (6) from bottom to top.

2. The exposure machine resolution improvement structure according to claim 1, characterized in that: A connection terminal (101) is fixedly mounted on the right end of the top of the lamp panel (1), and the top of the lamp panel (1) is fixedly connected to the radiator (2) via a plurality of sets of fixing screws (102).

3. The exposure machine resolution improvement structure according to claim 1, characterized in that: The radiator (2) comprises a heat dissipation plate (201) fixedly connected to the bottom of the lamp panel (1); a plurality of groups of heat dissipation fins (202) are fixedly connected to the bottom of the heat dissipation plate (201); and two groups of heat dissipation fans (203) are fixedly installed at the bottom of the plurality of groups of heat dissipation fins (202).

4. The exposure machine resolution improvement structure according to claim 1, characterized in that: The left and right ends of the top of the lampshade (4) are fixedly connected to the lamp board (1) via first mounting screws (401), ventilation holes (402) are provided on the front and rear sides of the lampshade (4), and protective plates (403) are fixedly connected around the top of the lampshade (4).

5. The exposure machine resolution improvement structure according to claim 1, characterized in that: The plurality of groups of light guide covers (5) are all located between the LED lamp beads (3) and the light focusing tube (6), and the plurality of groups of LED lamp beads (3) are all located on the inner side of the bottom end of the light guide cover (5).

6. The exposure machine resolution improvement structure according to claim 1, characterized in that: The bottom ends of the multiple groups of light-collecting tubes (6) are all fixedly connected to mounting edges (601), and the mounting edges (601) are fixedly connected to the lampshade (4) via multiple groups of second mounting screws (602).

7. The exposure machine resolution improvement structure according to claim 1, characterized in that: The outer sides of the first meniscus lens (7), the second meniscus lens (8) and the semi-convex lens (9) are all fixedly sleeved with protective sleeves (701); the top of the focusing tube (6) is threadedly connected to a mounting cover (702); and a positioning groove (703) is provided on the inner side of the mounting cover (702) at a position corresponding to the protective sleeve (701).

Images