A Printed Circuit Board Negative Film Production System

Abstract

This utility model discloses a printed circuit board negative film production system, comprising a drilling device, a copper plating equipment, a developing device, an etching device, a film removal device, an online scanning device, a board collecting device, an AOI inspection device, and multiple docking devices connected sequentially. The output end of the drilling device is connected to the input end of the copper plating equipment; the output end of the copper plating equipment is connected to the input end of the developing device; the output end of the developing device is connected to the input end of the etching device; the output end of the etching device is connected to the input end of the film removal device; the output end of the film removal device is connected to the input end of the online scanning device; the output end of the online scanning device is connected to the input end of the board collecting device; and the output end of the board collecting device is connected to the input end of the AOI inspection device, all via docking devices. This utility model embodiment enables efficient, stable, and intelligent large-scale production of negative PCBs.

Description

Technical Field

[0001] This utility model relates to the field of printed circuit board manufacturing technology, and in particular to a printed circuit board negative film production system. Background Technology

[0002] Printed circuit boards (PCBs) are essential components of electronic products, and their manufacturing quality directly affects product performance. Negative film processing is widely used in the production of low- to mid-range multilayer boards due to its simple process, low cost, and stable linewidth control. However, existing negative film production lines generally suffer from problems such as dispersed equipment, excessive manual handling, poor coordination, and delayed inspection, resulting in low efficiency, unstable yields, and difficulty in tracing defects.

[0003] Currently, drilling, copper plating, developing, etching, and film stripping equipment mostly operate independently, relying on manual labor or simple conveyors, which easily causes damage or misalignment of boards. Online inspection is lacking, and defective boards often flow to later processes. AOI inspection equipment is independent of the main line, resulting in slow feedback and difficulty in closing the loop. There is a lack of unified interface standards between equipment, leading to poor production line flexibility and difficulty in adapting to the demands of modern small-batch, multi-variety production. Therefore, it is necessary to build an integrated and automated negative film production system. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a printed circuit board negative film production system, capable of achieving efficient, stable, and intelligent large-scale production of negative PCBs.

[0005] A printed circuit board negative film production system according to this utility model includes a drilling device, a copper plating equipment, a developing device, an etching device, a film stripping device, an online scanning device, a board collecting device, an AOI inspection device, and multiple docking devices connected in sequence. The output end of the drilling device is connected to the input end of the copper plating equipment, the output end of the copper plating equipment is connected to the input end of the developing device, the output end of the developing device is connected to the input end of the etching device, the output end of the etching device is connected to the input end of the film stripping device, the output end of the film stripping device is connected to the input end of the online scanning device, the output end of the online scanning device is connected to the input end of the board collecting device, and the output end of the board collecting device is connected to the input end of the AOI inspection device through the docking devices.

[0006] The printed circuit board negative film production system according to the above embodiments of the present invention has at least the following beneficial effects: The printed circuit board negative film production system provided in this embodiment seamlessly connects drilling, copper plating, developing, etching, film removal, online scanning, board collection, and AOI inspection equipment through multiple standardized docking devices. This enables automatic flow of boards between processes, significantly reducing manual handling and waiting time, and improving production efficiency and overall capacity. The fully enclosed automatic transport of boards avoids scratches, misalignment, and contamination caused by manual handling, ensuring product surface quality and process consistency, and improving yield. After film removal, the boards are immediately connected to online scanning equipment to collect surface data; after collection, they are directly sent to AOI inspection equipment for rapid defect identification and feedback, forming a closed loop of "detection-analysis-rework," effectively preventing defective products from flowing into subsequent processes and reducing scrap costs. All equipment is connected through standardized docking devices, allowing production lines to flexibly add, remove, or replace modules according to capacity or process requirements, adapting to rapid switching between multiple varieties and small batch orders, and enhancing production flexibility. The compact layout of the equipment reduces intermediate buffer zones and transfer channels, optimizing workshop space utilization; it also reduces reliance on operators, saving labor costs. In summary, this utility model embodiment effectively solves the pain points of traditional negative film production lines, such as "numerous breakpoints, low efficiency, weak quality control, and poor flexibility," achieving efficient, stable, and intelligent large-scale production of negative film PCBs.

[0007] According to some embodiments of the present invention, the docking device includes a linear conveyor belt and a centering mechanism disposed on the linear conveyor belt, wherein the centering mechanism enables the circuit board on the linear conveyor belt to be transported in a centered manner.

[0008] According to some embodiments of the present invention, the linear conveyor belt includes a first frame, a plurality of rollers rotatably mounted on the first frame, and a first drive mechanism for driving the rollers to rotate, wherein the plurality of rollers are evenly spaced along a straight line.

[0009] According to some embodiments of the present invention, the centering mechanism includes multiple telescopic cylinders, which are arranged in pairs and symmetrically distributed on both sides of the first frame. A set of telescopic cylinders is arranged between two adjacent rollers. The piston rods of the two telescopic cylinders in the same set are arranged opposite to each other. A push plate is fixedly connected to the end of the piston rod of the telescopic cylinder. The push plate can push the circuit board to center it.

[0010] According to some embodiments of the present invention, the centering mechanism is disposed near the input end and / or output end of the linear conveyor belt.

[0011] According to some embodiments of the present invention, the centering mechanism includes a plurality of pneumatic grippers, and a pneumatic gripper is disposed between two adjacent rollers. The pneumatic gripper includes two clamping claw bodies symmetrically distributed at both ends of the rollers and a pneumatic module for driving the two clamping claw bodies to move closer to or further away from each other. The pneumatic gripper also includes a lifting module for driving the pneumatic module to move up and down, so that the clamping claw body extends upward or retracts downward from between the two rollers.

[0012] According to some embodiments of the present invention, the roller shaft includes an inner shaft and a plurality of outer wheels fixedly mounted on the inner shaft, wherein the plurality of outer wheels are evenly spaced along the axial direction of the inner shaft.

[0013] According to some embodiments of the present invention, the docking device includes a corner conveyor belt, which is composed of two straight conveyor belts. The two straight conveyor belts are distributed perpendicularly to each other, and the output end of one of the straight conveyor belts is docked to the side of the other straight conveyor belt. A buffer mechanism is provided at the docking point of the two straight conveyor belts.

[0014] According to some embodiments of the present invention, the board receiving device includes a second frame, a shelf, a storage compartment, and a second drive mechanism. The second frame is arranged at the output end of the linear conveyor belt. One end of the shelf is connected to the linear conveyor belt, which can transport the circuit board to the shelf. The other end of the shelf is rotatably connected to the second frame and connected to the storage compartment. The storage compartment is located on the second frame. The second drive mechanism is located on the second frame and can drive the shelf to rotate. When the shelf rotates upward, it can transport the circuit board into the storage compartment.

[0015] According to some embodiments of the present invention, the developing equipment is connected to a first automatic chemical solution adding device, the etching equipment is connected to a second automatic chemical solution adding device, and the film stripping equipment is connected to a third automatic chemical solution adding device.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of a printed circuit board negative film production system according to some embodiments of the present invention; Figure 2 This is a schematic diagram of the docking device according to some embodiments of the present invention; Figure 3 This is a schematic diagram of the centering mechanism in some embodiments of the present invention; Figure 4 This is a schematic diagram of the corner conveyor belt according to some embodiments of the present invention; Figure 5 This is a schematic diagram of the roller structure in some embodiments of the present invention; Figure 6 This is a schematic diagram of the structure of the plate-collecting device according to some embodiments of the present utility model; In the attached figures, the following labels are used: Drilling equipment 1; Copper plating equipment 2; Developing equipment 3; Etching equipment 4; Film removal equipment 5; Online scanning equipment 6; Board taking equipment 7; AOI inspection equipment 8; Automatic first chemical solution adding equipment 9; Automatic second chemical solution adding equipment 10; Automatic third chemical solution adding equipment 11; First frame 100; Roller 110; Inner shaft 111; Outer wheel 112; Telescopic cylinder 120; Push plate 130; Clamping claw body 140; Pneumatic module 150; Lifting module 160; Second frame 200; Shelf 210; Storage compartment 220; Second drive mechanism 230; Circuit board 300. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0022] Reference Figures 1 to 6 According to the present invention, a printed circuit board negative film production system includes a drilling device 1, a copper plating equipment 2, a developing device 3, an etching device 4, a film removal device 5, an online scanning device 6, a board receiving device 7, an AOI inspection device 8, and multiple docking devices connected in sequence. The output end of the drilling device 1 is connected to the input end of the copper plating equipment 2, the output end of the copper plating equipment 2 is connected to the input end of the developing device 3, the output end of the developing device 3 is connected to the input end of the etching device 4, the output end of the etching device 4 is connected to the input end of the film removal device 5, the output end of the film removal device 5 is connected to the input end of the online scanning device 6, the output end of the online scanning device 6 is connected to the input end of the board receiving device 7, and the output end of the board receiving device 7 is connected to the input end of the AOI inspection device 8 through docking devices.

[0023] It is understood that the printed circuit board negative film production system provided in this embodiment of the present invention seamlessly connects drilling, copper plating, developing, etching, film removal, online scanning, board collection, and AOI inspection equipment through multiple standardized docking devices, realizing automatic flow of boards between processes, significantly reducing manual handling and waiting time, and improving production efficiency and overall capacity. The fully enclosed automatic transmission of boards avoids problems such as scratches, misalignment, and contamination caused by manual handling, ensuring product surface quality and process consistency, and improving yield. After film removal, the boards are immediately connected to the online scanning device 6 to collect board surface data; after collection, they are directly sent to the AOI inspection device 8 for rapid defect identification and feedback, forming a "detection-analysis-rework" closed loop, effectively preventing defective products from flowing into subsequent processes and reducing scrap costs. All equipment is connected through standardized docking devices, facilitating flexible addition, reduction, and replacement of modules according to capacity or process requirements, adapting to rapid switching between multiple varieties and small batch orders, and enhancing production flexibility. The compact layout of the equipment reduces intermediate buffer zones and transfer channels, optimizing workshop space utilization; it also reduces reliance on operators, saving labor costs. In summary, this utility model embodiment effectively solves the pain points of traditional negative film production lines, such as "numerous breakpoints, low efficiency, weak quality control, and poor flexibility," achieving efficient, stable, and intelligent large-scale production of negative film PCBs.

[0024] Furthermore, refer to Figure 2 and Figure 3 According to some embodiments of the present invention, the docking device includes a linear conveyor belt and a centering mechanism disposed on the linear conveyor belt, the centering mechanism enabling the circuit board 300 on the linear conveyor belt to be transported in a centered manner.

[0025] Understandably, by introducing a linear conveyor belt and a centering mechanism into the docking device, the circuit board 300 can be kept centered during the transportation process, avoiding processing errors or damage caused by positional deviation. This not only improves the accuracy and stability of the production process, but also simplifies the subsequent equipment docking process and improves the overall production efficiency.

[0026] Furthermore, refer to Figure 2 According to some embodiments of the present invention, the linear conveyor belt includes a first frame 100, a plurality of rollers 110 rotatably mounted on the first frame 100, and a first driving mechanism for driving the rollers 110 to rotate. The plurality of rollers 110 are evenly spaced along a straight line.

[0027] Understandably, the linear conveyor belt employs a first frame 100, multiple rotatable rollers 110, and a first drive mechanism to drive these rollers 110, enabling the circuit board 300 to be stably transported along a straight path. This structure is simple, reliable, and easy to maintain. Furthermore, the evenly spaced rollers 110 ensure the smoothness of the circuit board 300 throughout the entire transport process. The first drive mechanism can be a combination of a motor and a belt, or other structural methods, which can be determined according to the actual situation and are not specifically limited here.

[0028] Furthermore, refer to Figure 2 According to some embodiments of the present invention, the centering mechanism includes multiple telescopic cylinders 120. The multiple telescopic cylinders 120 are arranged in pairs and symmetrically distributed on both sides of the first frame 100. A set of telescopic cylinders 120 is arranged between two adjacent rollers 110. The piston rods of the two telescopic cylinders 120 in the same set are arranged opposite to each other. The end of the piston rod of the telescopic cylinder 120 is fixedly connected to a push plate 130. The push plate 130 can push the circuit board 300 to center it.

[0029] It is understood that the centering mechanism uses multiple telescopic cylinders 120, symmetrically distributed on both sides of the first frame 100, and directly acts on the circuit board 300 through the push plate 130 to achieve centering. This method can quickly adjust the position of the circuit board 300, ensuring that it is accurately centered before entering the next process, reducing the quality risk caused by inaccurate positioning. Specifically, in this embodiment of the invention, the circuit board 300 can be confirmed to be input or output to the linear conveyor belt by means of sensing methods such as infrared sensors. Based on the sensing results, two telescopic cylinders 120 in the same group can simultaneously drive the push plate 130 to push inward from both sides of the circuit board 300, so that the circuit board 300 can be centered on the linear conveyor belt. After the circuit board 300 is centered, the telescopic cylinders 120 drive the push plate 130 to retract, and then the linear conveyor belt starts to transport the circuit board 300.

[0030] Preferably, according to some embodiments of the present invention, the centering mechanism is positioned near the input and / or output ends of the linear conveyor belt. It is understood that positioning the centering mechanism at the input and / or output ends of the linear conveyor belt allows for precise adjustment of the circuit board 300 at critical points, ensuring that the circuit board 300 is in an ideal position when entering or leaving the linear conveyor belt, further improving the automation level and production efficiency of the entire production line.

[0031] Furthermore, refer to Figure 3According to some embodiments of the present invention, the centering mechanism includes multiple pneumatic grippers, with a pneumatic gripper disposed between two adjacent roller shafts 110. The pneumatic gripper includes two clamping claw bodies 140 symmetrically distributed at both ends of the roller shaft 110 and a pneumatic module 150 for driving the two clamping claw bodies 140 to move closer or further away from each other. The pneumatic gripper also includes a lifting module 160 for driving the pneumatic module 150 to move up and down, so that the clamping claw bodies 140 extend upward or retract downward from between the two roller shafts 110.

[0032] Under normal conditions, the clamping claw 140 is located below the circuit board 300. When centering the circuit board 300 is required, the lifting module 160 drives the pneumatic module 150 to move upward, causing the clamping claw 140 to move upward and extend between the two rollers 110. At this time, the two clamping claws 140 are located on both sides of the circuit board 300. Then, the pneumatic module 150 drives the two clamping claws 140 to move closer to each other to center the circuit board 300. After centering, the pneumatic module 150 drives the two clamping claws 140 to move away from each other. After centering, the lifting module 160 drives the pneumatic module 150 to move downward, allowing the clamping claw 140 to retract downward to below the rollers 110 and away from the circuit board 300, thereby reducing the interference of the clamping claw 140 on the circuit board 300. The lifting module 160 can be a structure such as a cylinder, hydraulic cylinder, or lead screw motor, or a combination of multiple structures, which can be determined according to the actual situation, and no specific limitation is made here.

[0033] Furthermore, refer to Figure 5 According to some embodiments of the present invention, the roller 110 includes an inner shaft 111 and a plurality of outer wheels 112 fixedly mounted on the inner shaft 111, the plurality of outer wheels 112 being evenly spaced along the axial direction of the inner shaft 111.

[0034] It is understandable that the roller 110 consists of an inner shaft 111 and multiple outer wheels 112. The outer wheels 112 rotate with the rotation of the inner shaft 111. This design not only ensures flexibility and stability during the transmission process, but also effectively reduces the contact friction between the roller 110 and the circuit board 300, which has a protective effect on the surface of the circuit board 300, and increases the service life of the roller 110.

[0035] Furthermore, refer to Figure 4 According to some embodiments of the present invention, the docking device includes a corner conveyor belt, which is composed of two straight conveyor belts. The two straight conveyor belts are distributed perpendicularly to each other, and the output end of one of the straight conveyor belts is docked to the side of the other straight conveyor belt. A buffer mechanism is provided at the docking point of the two straight conveyor belts.

[0036] Understandably, the design of the corner conveyor belt allows the system to flexibly adapt to the needs of factory layout. Two mutually perpendicular straight conveyor belts are combined to form a corner conveyor belt, solving the problem that traditional straight conveyor belts cannot achieve direction changes, increasing the system's space utilization efficiency and layout flexibility. Furthermore, in this embodiment of the invention, a buffer mechanism is used to absorb impact, prevent collision damage to the circuit board 300, and improve the smoothness of corner transmission. The buffer mechanism can be a floating baffle with springs or rubber pads installed on the side or end of the corner connection. When the circuit board 300 moves from one straight conveyor belt to another, if there is a speed difference or inertial impact, the elastic baffle can be slightly compressed to absorb kinetic energy and avoid hard collisions between the boards. The buffer mechanism can also be a set of passive rollers with damping bearings or friction deceleration structures installed in the corner transition area. The roller surface is covered with a soft material (such as polyurethane). When the circuit board 300 enters the corner area, the deceleration rollers naturally reduce the speed of the board through friction, and in conjunction with the damper, absorb kinetic energy to achieve a "soft landing" transition to the next straight conveyor belt. The buffer mechanism can also be other structural methods, which can be determined according to the actual situation, and will not be elaborated here.

[0037] Furthermore, refer to Figure 6 According to some embodiments of the present invention, the board receiving device 7 includes a second frame 200, a shelf 210, a storage compartment 220, and a second drive mechanism 230. The second frame 200 is arranged at the output end of the linear conveyor belt. One end of the shelf 210 is connected to the linear conveyor belt, which can transport the circuit board 300 to the shelf 210. The other end of the shelf 210 is rotatably connected to the second frame 200 and faces the storage compartment 220. The storage compartment 220 is located on the second frame 200. The second drive mechanism 230 is located on the second frame 200 and can drive the shelf 210 to rotate. When the shelf 210 rotates upward, it can transport the circuit board 300 into the storage compartment 220.

[0038] Understandably, the board receiving device 7, through the design of the second frame 200, the shelf 210, the storage bin 220, and the second drive mechanism 230, achieves the automatic transfer of the circuit board 300 from the linear conveyor belt to the storage bin 220, reducing manual intervention, improving the automation level and work efficiency of the board receiving process, and also reducing losses caused by human error. Specifically, the linear conveyor belt transports the circuit board 300 to the shelf 210, which can be confirmed by sensing methods such as infrared sensors to ensure that the circuit board 300 is correctly positioned. The second drive mechanism 230 drives the shelf 210 to rotate based on the sensing results, and the circuit board 300 flips into the storage bin 220 along with the shelf 210. The second drive mechanism 230 can be a cylinder, hydraulic cylinder, or lead screw motor, or a combination of multiple structures, which can be determined according to the actual situation and is not specifically limited here. Furthermore, refer to Figure 1 According to some embodiments of the present invention, the developing device 3 is connected to the first automatic chemical solution adding device 9, the etching device 4 is connected to the second automatic chemical solution adding device 10, and the film stripping device 5 is connected to the third automatic chemical solution adding device 11.

[0039] Understandably, the developing equipment 3, etching equipment 4, and film stripping equipment 5 are each connected to corresponding automatic chemical solution addition devices, which realizes real-time monitoring and automatic replenishment of chemical solutions, ensures the consistency and stability of process parameters, reduces quality problems caused by changes in chemical solution concentration, and improves product yield and production continuity.

[0040] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A printed circuit board negative film production system, characterized in that, include: The drilling equipment, copper plating equipment, developing equipment, etching equipment, film removal equipment, online scanning equipment, board receiving equipment, AOI inspection equipment, and multiple docking devices are sequentially connected. The output end of the drilling equipment is connected to the input end of the copper plating equipment, the output end of the copper plating equipment is connected to the input end of the developing equipment, the output end of the developing equipment is connected to the input end of the etching equipment, the output end of the etching equipment is connected to the input end of the film removal equipment, the output end of the film removal equipment is connected to the input end of the online scanning equipment, the output end of the online scanning equipment is connected to the input end of the board receiving equipment, and the output end of the board receiving equipment is connected to the input end of the AOI inspection equipment through the docking devices.

2. The printed circuit board negative film production system according to claim 1, characterized in that, The docking device includes a linear conveyor belt and a centering mechanism disposed on the linear conveyor belt, the centering mechanism enabling the circuit board on the linear conveyor belt to be transported in a centered manner.

3. The printed circuit board negative film production system according to claim 2, characterized in that, The linear conveyor belt includes a first frame, a plurality of rollers rotatably mounted on the first frame, and a first drive mechanism for driving the rollers to rotate. The plurality of rollers are arranged at uniform intervals along a straight line.

4. The printed circuit board negative film production system according to claim 3, characterized in that, The centering mechanism includes multiple telescopic cylinders, which are arranged in pairs and symmetrically distributed on both sides of the first frame. A pair of telescopic cylinders is arranged between two adjacent rollers. The piston rods of the two telescopic cylinders in the same pair are arranged opposite each other. A push plate is fixedly connected to the end of the piston rod of the telescopic cylinder. The push plate can push the circuit board to center it.

5. The printed circuit board negative film production system according to claim 4, characterized in that, The centering mechanism is positioned near the input and / or output ends of the linear conveyor belt.

6. The printed circuit board negative film production system according to claim 3, characterized in that, The centering mechanism includes multiple pneumatic grippers, with one pneumatic gripper positioned between two adjacent rollers. Each pneumatic gripper includes two clamping claw bodies symmetrically distributed at both ends of the rollers and a pneumatic module that drives the two clamping claw bodies to move closer or further apart. The pneumatic gripper also includes a lifting module for driving the pneumatic module to move up and down, so that the clamping claw bodies extend upward or retract downward between the two rollers.

7. The printed circuit board negative film production system according to claim 3, characterized in that, The roller shaft includes an inner shaft and a plurality of outer wheels fixedly mounted on the inner shaft, with the plurality of outer wheels evenly spaced along the axial direction of the inner shaft.

8. The printed circuit board negative film production system according to claim 2, characterized in that, The docking device includes a corner conveyor belt, which is composed of two straight conveyor belts. The two straight conveyor belts are perpendicular to each other, and the output end of one of the straight conveyor belts is docked to the side of the other straight conveyor belt. A buffer mechanism is provided at the docking point of the two straight conveyor belts.

9. The printed circuit board negative film production system according to claim 2, characterized in that, The board receiving device includes a second frame, a shelf, a storage compartment, and a second drive mechanism. The second frame is arranged at the output end of the linear conveyor belt. One end of the shelf is connected to the linear conveyor belt, which can transport the circuit board to the shelf. The other end of the shelf is rotatably connected to the second frame and connected to the storage compartment, which is located on the second frame. The second drive mechanism is located on the second frame and can drive the shelf to rotate. When the shelf rotates upward, it can transport the circuit board into the storage compartment.

10. The printed circuit board negative film production system according to claim 1, characterized in that, The developing equipment is connected to a first automatic chemical solution adding device, the etching equipment is connected to a second automatic chemical solution adding device, and the film stripping equipment is connected to a third automatic chemical solution adding device.

Images