A laser direct writing type photoetching equipment for pcb production

Abstract

This utility model relates to the technical field of printed circuit board (PCB) production equipment, and discloses a laser direct-write lithography device for PCB production. The device includes a support assembly, a fixed clamping assembly, a quick-release assembly, an adaptive mounting assembly, and a laser direct-write exposure head. The fixed clamping assembly includes a motor, gears, a rack, and a connecting plate. The motor drives the gears and rack to move the connecting plate. The adaptive mounting assembly is used to fix an elastic clamping plate. The connecting plate is detachably connected to the adaptive mounting assembly via the quick-release assembly. The quick-release assembly includes a locking sleeve, a cylindrical pin passing through the locking sleeve, and a ball bearing disposed on the outer wall of the cylindrical pin. Operating the cylindrical pin retracts the ball bearing. This utility model, by incorporating the quick-release assembly, solves the problems of inconvenient replacement and low efficiency of clamping components in existing technologies, achieving rapid assembly and disassembly of the clamping components, stable and reliable clamping, and improving the production efficiency and versatility of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of printed circuit board production equipment technology, and in particular to a laser direct-write lithography equipment for PCB board production. Background Technology

[0002] In the manufacturing process of printed circuit boards (PCBs), laser direct-write lithography is a key high-precision patterning technology. It uses a focused laser beam to directly scan and expose a substrate coated with photoresist, thereby forming a precise circuit pattern. To ensure the accuracy of the lithography, the equipment must stably, firmly, and flatly fix the PCB board during the exposure process.

[0003] Currently, existing laser direct-write lithography equipment typically uses various clamping devices to fix PCB boards. However, due to the wide variety of PCB board specifications, sizes, and thicknesses, a single clamping component is often insufficient to meet all production needs. Therefore, when switching between different production batches, operators need to frequently change clamping components that match the PCB board, such as flexible clamps of different sizes.

[0004] In existing technologies, the replacement process for these clamping components is usually quite cumbersome. Operators often need to use tools such as screwdrivers to loosen and tighten multiple bolts one by one. The entire disassembly and installation process is time-consuming, which not only increases the labor intensity of operators but also leads to excessive downtime when the equipment switches production tasks, significantly affecting overall production efficiency.

[0005] As PCB production moves towards higher variety and smaller batch sizes, the problem of equipment idleness caused by low efficiency in changing clamping components has become increasingly prominent, becoming a technical bottleneck restricting the flexible and efficient operation of laser direct-write lithography equipment. Existing equipment generally lacks an integrated structural design that enables rapid and convenient replacement of clamping components.

[0006] Therefore, a laser direct-write lithography equipment for PCB board production is proposed to solve the above problems. Utility Model Content

[0007] To overcome the above shortcomings, this utility model provides a laser direct-write lithography equipment for PCB board production, aiming to improve the problems of complex clamping component structure, inconvenient replacement and poor clamping adaptability in the existing technology.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a laser direct-write lithography device for PCB board production, comprising: a support assembly, a fixing clamping assembly, a quick-release assembly, an adaptive mounting assembly, and a laser direct-write exposure head.

[0009] The fixed clamping assembly includes a motor, a gear, a rack, a guide sleeve, a connecting plate, and an elastic clamping plate. The motor is disposed in a square groove inside the worktable of the support assembly. The gear is driven and connected by the motor. The rack meshes with the gear and slides inside the guide sleeve. The connecting plate is fixedly connected to one end of the rack.

[0010] Furthermore, the adaptive installation assembly includes an L-shaped mounting plate, a telescopic rod, and an L-shaped fixing plate. The elastic clamp is fixedly connected to the bottom of the L-shaped mounting plate, and the two ends of the telescopic rod are slidably connected between the L-shaped mounting plate and the L-shaped fixing plate.

[0011] The connecting plate, the adaptive mounting assembly, and the quick-release assembly are combined by means of the L-shaped fixing plate of the adaptive mounting assembly being detachably connected to the connecting plate via the quick-release assembly; the quick-release assembly includes a locking sleeve, a cylindrical pin, a ball bearing, and a limiting ring, the cylindrical pin being slidably inserted inside the locking sleeve, the ball bearing being disposed on the outer wall of the cylindrical pin, and the limiting ring being sleeved on the outer periphery of the cylindrical pin.

[0012] Preferably, a spring is fitted on the outer wall of the telescopic rod, and the two ends of the spring abut against the L-shaped mounting plate and the L-shaped fixing plate, respectively.

[0013] Preferably, the guide sleeve has a hollow cylindrical structure, and a longitudinal guide groove is provided inside for the rack to slide.

[0014] Preferably, the elastic clamp is detachably connected to the L-shaped mounting plate by bolts or snap-fit ​​structures.

[0015] Preferably, the exposed end of the cylindrical pin is provided with a knob for rotation, and the ball is supported inside the cylindrical pin by an elastic member. When the knob is rotated, the ball can retract into the cylindrical pin to disengage from the locking sleeve.

[0016] Preferably, the limiting ring abuts against the end face of the locking sleeve to limit the insertion depth of the cylindrical pin.

[0017] Preferably, both the L-shaped mounting plate and the L-shaped fixing plate are L-shaped structures, and their openings are arranged opposite to each other.

[0018] Preferably, the workbench is provided with support feet at the four corners of its bottom.

[0019] Preferably, the support assembly's bracket is fixedly connected to the top of the worktable, and the laser direct-write exposure head is fixedly connected to the bracket.

[0020] Preferably, the top opening of the square groove inside the workbench is covered by a cover plate.

[0021] This utility model has the following beneficial effects: 1. In this utility model, a gear and rack mechanism driven by a motor is set to drive the elastic clamping plate to perform synchronous clamping, and a clamping execution mechanism formed by quick-release components and self-adaptive installation components connected in series is used in conjunction. This solves the problems of complex structure, low clamping reliability and inconvenience in changing clamps in the existing technology of clamping equipment. It achieves stable and reliable workpiece clamping, and at the same time, it can quickly change the elastic clamping plate to adapt to different workpieces, thereby improving production efficiency and equipment versatility.

[0022] 2. In this utility model, by setting a quick-release assembly including a cylindrical pin, ball bearings and a locking sleeve, the problems of requiring tools, cumbersome disassembly and assembly steps, and long time consumption when replacing clamping parts in the prior art are solved. It achieves the technical effect that the operator only needs to turn the knob to realize the quick separation and locking of the self-adaptive installation assembly and the connecting plate, which greatly simplifies the replacement process and improves the convenience of equipment maintenance. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a laser direct-write lithography equipment for PCB board production proposed in this utility model. Figure 2 This is a partial structural diagram of the fixing and clamping component of a laser direct-write lithography equipment for PCB board production proposed in this utility model. Figure 3 This is a structurally disassembled schematic diagram of the elastic clamping plate portion of a laser direct-write lithography equipment for PCB board production proposed in this utility model. Figure 4 This is a cross-sectional schematic diagram of the quick-release component of a laser direct-write lithography equipment for PCB board production proposed in this utility model.

[0024] Legend: 1. Support assembly; 101. Worktable; 102. Square channel; 103. Cover plate; 104. Bracket; 2. Fixing and clamping assembly; 201. Guide sleeve; 202. Rack; 203. Gear; 204. Connecting plate; 205. Elastic clamping plate; 206. Motor; 3. Quick release assembly; 301. Cylindrical pin; 302. Limiting ring; 303. Ball bearing; 304. Locking sleeve; 4. Self-adaptive mounting assembly; 401. L-shaped mounting plate; 402. Telescopic rod; 403. L-shaped fixing plate; 5. Laser engraving equipment. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1 and Figure 2 As shown, the laser direct-write lithography equipment for PCB production includes a support assembly 1, a fixed clamping assembly 2, a quick-release assembly 3, an adaptive mounting assembly 4, and a laser engraving device 5. The support assembly 1 serves as the mounting base for the entire equipment. The fixed clamping assembly 2 is mounted on the support assembly 1 and is used to clamp the workpiece. The support assembly 1 has a worktable 101 and a bracket 104 fixedly connected to the top of the worktable 101. The laser engraving device 5 is fixedly connected to the bracket 104 and is used to perform exposure operations on the clamped workpiece. The fixed clamping assembly 2 includes a motor 206, a gear 203, a rack 202, a guide sleeve 201, a connecting plate 204, and an elastic clamping plate 205. The worktable 101 has a square slot 102 inside to accommodate the motor 206. The top opening of the square slot 102 is covered by a cover plate 103. The motor 206 drives the connected gear 203, and the gear 203 meshes. A rack 202 is slidably fitted inside a guide sleeve 201. One end of the rack 202 is fixedly connected to a connecting plate 204. The adaptive mounting assembly 4 includes an L-shaped mounting plate 401, a telescopic rod 402, and an L-shaped fixing plate 403. An elastic clamping plate 205 is fixedly connected to the bottom of the L-shaped mounting plate 401. The two ends of the telescopic rod 402 are slidably connected between the L-shaped mounting plate 401 and the L-shaped fixing plate 403. The connecting plate 204 is detachably connected to the L-shaped fixing plate 403 of the adaptive mounting assembly 4 via a quick-release assembly 3. The quick-release assembly 3 is used to realize the quick separation and connection of the connecting plate 204 and the adaptive mounting assembly 4. The quick-release assembly 3 includes a locking sleeve 304, a cylindrical pin 301 slidably inserted inside the locking sleeve 304, a ball bearing 303 disposed on the outer wall of the cylindrical pin 301, and a limiting ring 302 sleeved on the outer periphery of the cylindrical pin 301.

[0027] Reference Figure 3 and Figure 4The adaptive mounting assembly 4 has an L-shaped mounting plate 401, a telescopic rod 402, and an L-shaped fixing plate 403. Both the L-shaped mounting plate 401 and the L-shaped fixing plate 403 are L-shaped and their openings are opposite to each other. The bottom of the L-shaped mounting plate 401 is fixedly connected to an elastic clamping plate 205. The outer wall of the telescopic rod 402 is fitted with a spring, and the two ends of the spring abut against the L-shaped mounting plate 401 and the L-shaped fixing plate 403 respectively. The two ends of the telescopic rod 402 are slidably connected between the L-shaped mounting plate 401 and the L-shaped fixing plate 403. The function of the adaptive mounting assembly 4 is to provide a mounting base for the elastic clamping plate 205 and to provide a reset and buffering function through the cooperation of the telescopic rod 402 and the spring.

[0028] The quick-release assembly 3 has a locking sleeve 304, a cylindrical pin 301 slidably inserted inside the locking sleeve 304, a ball bearing 303 disposed on the outer wall of the cylindrical pin 301, and a limiting ring 302 sleeved on the outer periphery of the cylindrical pin 301. The exposed end of the cylindrical pin 301 is provided with a knob for rotation. The ball bearing 303 is supported inside the cylindrical pin 301 by an elastic member. When the knob is rotated, the ball bearing 303 can retract into the cylindrical pin 301, releasing the locking state of the locking sleeve 304.

[0029] In the assembled state, the connecting plate 204 of the fixed clamping assembly 2 is fixedly connected to the cylindrical pin 301 of the quick-release assembly 3, and the L-shaped fixing plate 403 of the adaptive mounting assembly 4 is fixedly connected to the locking sleeve 304 of the quick-release assembly 3. Thus, the connecting plate 204 is detachably connected to the adaptive mounting assembly 4 through the quick-release assembly 3. This structure, which is connected in series through the quick-release assembly 3, ensures that when clamping the workpiece, the driving force of the motor 206 can be transmitted to the elastic clamping plate 205 through the gear 203, rack 202, connecting plate 204, quick-release assembly 3, and adaptive mounting assembly 4, thus ensuring the reliability of clamping. It also allows for the quick disassembly and replacement of the entire adaptive mounting assembly 4 by operating the quick-release assembly 3 when the elastic clamping plate 205 needs to be replaced. The structure is simple and the operation is convenient.

[0030] For the power source used to drive the rotation of gear 203, those skilled in the art can use motor 206 or other conventional driving methods. The specific internal structure of motor 206 is well known in the art and will not be described in detail here.

[0031] In a preferred embodiment, in order to provide elastic reset and support, a spring is sleeved on the outer wall of the telescopic rod 402. The two ends of the spring abut against the L-shaped mounting plate 401 and the L-shaped fixing plate 403 respectively. When the L-shaped mounting plate 401 is pulled, the spring is compressed. After being released, the elastic force of the spring resets the L-shaped mounting plate 401, which helps to initially engage the elastic clamping plate 205.

[0032] As another preferred embodiment, in order to ensure the stable linear motion of the rack 202, the guide sleeve 201 has a hollow cylindrical structure with a longitudinal guide groove inside for the rack 202 to slide. The rack 202 slides precisely inside the guide groove, effectively preventing swaying during the motion.

[0033] As another preferred embodiment, in order to facilitate the replacement of the elastic clamp 205, the elastic clamp 205 is detachably connected to the L-shaped mounting plate 401 by bolts or snap-fit ​​structure. This connection method enables the elastic clamp 205 to be installed and removed quickly, improving the adaptability of the equipment to workpieces of different sizes or shapes.

[0034] As another preferred embodiment, in order to achieve convenient operation of the quick-release component 3, the exposed end of the cylindrical pin 301 is provided with a knob for rotation. The ball 303 is supported inside the cylindrical pin 301 by an elastic member. When the operator rotates the knob, the ball 303 is subjected to external force and can retract into the cylindrical pin 301, thereby disengaging from the locking sleeve 304 and realizing a quick separation action.

[0035] In another preferred embodiment, in order to precisely control the insertion depth of the cylindrical pin 301, the limiting ring 302 abuts against the end face of the locking sleeve 304, effectively limiting the insertion position of the cylindrical pin 301 and ensuring the stability and repeatability of the locking mechanism.

[0036] As a preferred embodiment, both the L-shaped mounting plate 401 and the L-shaped fixing plate 403 are L-shaped structures, and their openings are arranged opposite each other. This L-shaped structure design provides a stable connection interface, while also leaving enough space for the installation and movement of the telescopic rod 402, and helps to surround and support the elastic clamp 205.

[0037] As another preferred embodiment, in order to provide stable equipment support, the bottom four corners of the worktable 101 are provided with support feet. These support feet ensure the stability of the entire laser direct writing lithography equipment for PCB production during operation and reduce the impact of vibration on lithography accuracy.

[0038] Working principle: When it is necessary to clamp the workpiece, the motor 206 in the fixed clamping assembly 2 is started. The motor 206 rotates and drives the gear 203 connected to it to rotate. Since the gear 203 meshes with the rack 202, the rotation of the gear 203 causes the rack 202 to slide linearly in the longitudinal guide groove inside the guide sleeve 201. The linear movement of the rack 202 causes the connecting plate 204 fixedly connected to it to move synchronously. Since the connecting plate 204 is detachably connected to the L-shaped fixing plate 403 of the self-adaptive mounting assembly 4 through the quick-release assembly 3, the movement of the connecting plate 204 will cause the entire self-adaptive mounting assembly 4 and the elastic clamping plate 205 fixedly connected to it to slide, thereby realizing the clamping or releasing of the workpiece. The entire equipment is usually symmetrically arranged with two sets of clamping mechanisms to achieve synchronous centering clamping of the workpiece. When the elastic clamp 205 needs to be replaced, the operator turns the knob on the exposed end of the cylindrical pin 301 in the quick-release assembly 3. This action causes the ball 303 to retract into the cylindrical pin 301 through the force of the elastic component, releasing the locking state of the ball 303 on the inner wall of the locking sleeve 304. At this time, the cylindrical pin 301 can be pulled out from the locking sleeve 304, thereby quickly separating the connecting plate 204 from the L-shaped fixing plate 403 of the self-adaptive mounting assembly 4. The function of the limiting ring 302 is to limit the position of the cylindrical pin 301 and prevent over-insertion or dislodgement. After separation, the entire self-adaptive mounting assembly 4, together with the L-shaped mounting plate 401, the telescopic rod 402, the spring, and the elastic clamp 205, can be removed as a whole. After replacing the new elastic clamp 205, it can be quickly installed back through the quick-release assembly 3. The operation process is convenient and efficient. After the workpiece is stably clamped by the elastic clamp 205, the laser engraving device 5, which is fixed on the bracket 104, scans and exposes the photoresist on the surface of the workpiece to a preset pattern, thus completing the core step in the photolithography process.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A laser direct-write lithography device for PCB board production, comprising: Support assembly (1), the support assembly (1) having a worktable (101) and a bracket (104) fixedly connected to the top of the worktable (101). A fixed clamping assembly (2) is disposed on the top of the worktable (101); Quick-release components (3); Adaptive installation of components (4); A laser engraving device (5) is fixedly connected to the bracket (104); Its features are, The fixed clamping assembly (2) includes a motor (206), a gear (203) driven and connected by the motor (206), a rack (202) meshing with the gear (203), a guide sleeve (201), a connecting plate (204), and an elastic clamping plate (205). The worktable (101) has a square groove (102) inside to accommodate the motor (206). The top opening of the square groove (102) is covered by a cover plate (103). The rack (202) is slidably fitted inside the guide sleeve (201). One end of the rack (202) is fixedly connected to the connecting plate (204). The adaptive mounting assembly (4) includes an L-shaped mounting plate (401), a telescopic rod (402), and an L-shaped fixing plate (403). The bottom of the L-shaped mounting plate (401) is fixedly connected to the elastic clamp (205), and the two ends of the telescopic rod (402) are slidably connected between the L-shaped mounting plate (401) and the L-shaped fixing plate (403). The connecting plate (204) is detachably connected to the L-shaped fixing plate (403) of the adaptive mounting assembly (4) via the quick-release assembly (3). The quick-release assembly (3) includes a locking sleeve (304), a cylindrical pin (301) slidably inserted inside the locking sleeve (304), a ball bearing (303) disposed on the outer wall of the cylindrical pin (301), and a limiting ring (302) sleeved on the outer periphery of the cylindrical pin (301).

2. The laser direct-write lithography equipment for PCB board production according to claim 1, characterized in that: The outer wall of the telescopic rod (402) is fitted with a spring, and the two ends of the spring abut against the L-shaped mounting plate (401) and the L-shaped fixing plate (403) respectively.

3. The laser direct-write lithography equipment for PCB board production according to claim 1, characterized in that: The guide sleeve (201) has a hollow cylindrical structure, and a longitudinal guide groove is provided inside for the rack (202) to slide.

4. The laser direct-write lithography equipment for PCB board production according to claim 1, characterized in that: The elastic clamp (205) is detachably connected to the L-shaped mounting plate (401) by bolts or snap-fit ​​structure.

5. The laser direct-write lithography equipment for PCB board production according to claim 1, characterized in that: The exposed end of the cylindrical pin (301) is provided with a knob for rotation. The ball (303) is supported inside the cylindrical pin (301) by an elastic member. When the knob is rotated, the ball (303) can retract into the cylindrical pin (301) to disengage from the locking sleeve (304).

6. The laser direct-write lithography equipment for PCB board production according to claim 1, characterized in that: The limiting ring (302) abuts against the end face of the locking sleeve (304) to limit the insertion depth of the cylindrical pin (301).

7. The laser direct-write lithography equipment for PCB board production according to claim 1, characterized in that: Both the L-shaped mounting plate (401) and the L-shaped fixing plate (403) are L-shaped structures, and their openings are arranged opposite each other.

8. The laser direct-write lithography equipment for PCB board production according to claim 1, characterized in that: The workbench (101) is provided with support feet at the four corners of its bottom.

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