A flexible PCB board raw material unwinding device

Abstract

The present invention discloses a flexible PCB board raw material unwinding device, which includes a frame, a pair of coil shafts and a receiving plate, wherein the frame is located at the input end of a production device used in conjunction with the unwinding device, and the production device is used to extract raw materials from the unwinding device; both coil shafts are rotatably mounted on the frame, and each coil shaft is used to place the raw materials; the receiving plate is mounted on a side of the frame away from the production device, and both coil shafts are located between the production device and the receiving plate; a stabilizing component for stabilizing the raw materials on each coil shaft on the receiving plate is mounted on the receiving plate. The present application has the effect of reducing the spacing between two adjacent rows of flexible circuit board production lines and improving the utilization rate of the same space in the factory.

Description

Technical Field

[0001] The invention relates to the field of circuit board manufacturing, and in particular to a flexible PCB board raw material unwinding device. Background Art

[0002] At present, with the development of domestic information technology, industrial production has higher and higher requirements for circuit boards. In order to meet production needs, a flexible circuit board will be used. The flexible circuit board is made of polyimide or polyester film as a substrate and is a printed circuit board with high reliability and excellent flexibility. The flexible circuit board has the characteristics of high wiring density, light weight, thin thickness and good bending properties.

[0003] The existing development-etching-stripping production line is a major production process in the printed circuit board industry. Its main function is to retain the copper layer in the circuit area of ​​the circuit board and etch away the copper layer in the non-circuit area. In the factory, multiple production lines will be arranged in an array, and a circuit board raw material unwinding device will be set up at the front end of the production equipment. When the previous roll of raw material is about to run out, the worker will first pull out the roll of raw material and tension it, so that the production equipment can always extract raw materials from the unwinding device. At the same time, the worker stands on the side of the unwinding device to splice the next roll of raw material with the original raw material.

[0004] Regarding the above-mentioned related technologies, such as Figure 1 As shown, when the front and rear rolls of flexible circuit board materials are spliced ​​on the side, a larger working space is required, so that the distance between two adjacent production lines is larger, which is not conducive to production. Summary of the invention

[0005] In order to change the working position when receiving raw materials, reduce the distance between two adjacent rows of flexible circuit board production lines, and improve the utilization rate of the same space in the factory, the present application provides a flexible PCB board raw material unwinding equipment.

[0006] The present application provides a flexible PCB board raw material unwinding device adopts the following technical solution:

[0007] A flexible PCB board raw material unwinding device, comprising a frame, a pair of winding shafts and a receiving plate, wherein the frame is located at the input end of a production equipment used in conjunction with the unwinding device, and the production equipment is used to extract raw materials from the unwinding device; the two winding shafts are rotatably mounted on the frame, and each winding shaft is used to place the raw materials; the receiving plate is mounted on a side of the frame away from the production equipment, and the two winding shafts are located between the production equipment and the receiving plate; a stabilizing component is mounted on the receiving plate for stabilizing the raw materials on each winding shaft on the receiving plate.

[0008] By adopting the above technical solution, the worker stands at one end of the frame along the raw material conveying direction and away from the production equipment to operate the raw materials on the two coil shafts, first loosens the raw material coil in use to a certain length, so that the production equipment can continue to operate on this part of the raw material, and then the worker splices the end with the end of the next roll of raw material;

[0009] Usually, there are multiple rows of adjacent production equipment in the production workshop. When two workers operate two rows of production equipment to splice raw materials, compared with the original two workers standing on one side of the rack along the direction of raw material delivery (such as Figure 1 The two workers can smoothly replace the raw materials on the coil shafts, which increases the working space between the two adjacent production equipment, so that the workers will not hinder each other when working, and improve the working speed; at the same time, the workers use the splicing plate and the stabilizing components to fix the raw materials on the two coil shafts on the splicing plate, which is convenient for the workers to splice the raw materials;

[0010] In addition, in order to not stop production when extending the raw materials, the raw materials are usually tensioned over a long distance between the frame and the production equipment to buffer the raw materials, and then the raw materials can be extended on the frame. The present application realizes rapid extension of the raw materials by changing the working position and using the connecting plate, without the need to set up a tensioning mechanism, thereby saving production space.

[0011] Preferably, the stabilizing component includes a vacuum generator and an air pipe, a through hole is provided on the receiving plate, a negative pressure chamber connected to the through hole is provided in the receiving plate, and the vacuum generator is connected to the negative pressure chamber through the air pipe.

[0012] By adopting the above technical solution, the raw material is pulled out from the coil shaft and placed on the receiving plate, and the vacuum generator is started to form negative pressure, so that the raw material is adsorbed on the receiving plate. Two rolls of raw materials are placed on the receiving plate at the same time, and workers can splice the two rolls of raw materials. Compared with clamping the raw materials, this fixing method does not require operation on the surface of the raw materials, which is convenient for workers to perform splicing operations.

[0013] Preferably, the two winding shafts are respectively located on both sides of the receiving plate in the vertical direction, the splicing plate surface of the receiving plate provided with the through hole faces the outside of the frame and is inclined, and transition shafts are rotatably installed at both ends of the receiving plate along the raw material transportation direction, and the raw materials are all wound around the transition shafts; the splicing plate surface includes a first splicing surface and a pair of second splicing surfaces, and the two second splicing surfaces are respectively located at the two ends of the first splicing surface along the raw material transportation direction, and the two second splicing surfaces are respectively placed on the raw materials on the two winding shafts, and the first splicing surface is placed with adhesive tape for bonding the raw materials on the two winding shafts.

[0014] By adopting the above technical solution, the worker first places the adhesive tape on the first splicing surface, then winds the two rolls of raw materials on the transition shaft respectively, and then places them on the two second splicing surfaces of the splicing panel and overlaps them on the adhesive tape, and then continues to stick the adhesive tape on the two rolls of raw materials to splice the two rolls of raw materials into one; first, the connecting plate is tilted to facilitate the workers' operation, and second, winding the raw materials on the transition shaft and then placing them on the splicing board surface is beneficial to protecting the raw materials and reducing the situation where the raw materials are directly in contact with the sharp surface of the connecting plate and thus being scratched.

[0015] Preferably, the receiving plate is slidably mounted on the frame, and the sliding direction of the receiving plate is perpendicular to the raw material transportation direction on the receiving plate.

[0016] By adopting the above technical solution, the receiving plate slides on the frame. First, when splicing raw materials, you only need to pull out the receiving plate to facilitate the replacement of materials. After the splicing is completed, the receiving plate can be moved away during normal production to avoid obstruction of operation. Second, if the installation position of the receiving plate is fixed, when the splicing is completed, the raw materials need to be completely pulled open and bypass the receiving plate before they can be returned to the frame. After the receiving plate is slidably installed on the frame, you only need to pull the raw materials away from the surface of the receiving plate and push the receiving plate to return the raw materials to their original position.

[0017] Preferably, the frame is rotatably mounted with a first limiting roller between the coil shaft and the production equipment, and the raw material is wound around the first limiting roller; the frame is provided with a driving frame on one side of the first limiting roller, and the driving frame is slidably mounted with a second limiting roller in a direction close to or away from the first limiting roller, and when the next roll of the raw material needs to be replaced, the second limiting roller slides toward the direction close to the first limiting roller and abuts against the raw material.

[0018] By adopting the above technical solution, because during the splicing process of two raw materials, in order not to stop the production of circuit boards, the original raw materials will be first loosened from the coil shaft to leave part of the raw materials for the production equipment to continue feeding and production. In order to reduce the displacement of this part of the circuit board, during the splicing, the second limiting roller is used to abut against the raw material and clamp the raw material with the first limiting roller, thereby ensuring the stable transportation of the raw materials between the various components and improving the production stability.

[0019] Preferably, the frame has a pair of film rolling rollers rotatably installed between the production equipment and the first limiting roller, and the raw material includes a film tearing section located between the production equipment and the first limiting roller; the film tearing section is inclined along the frame toward the production equipment, and the two film rolling rollers are respectively located on both sides of the film tearing section and are arranged up and down in the vertical direction, and the two film rolling rollers are used to wind two layers of protective film around the raw material.

[0020] By adopting the above technical scheme, in order to protect the raw materials, protective films are usually covered on both sides of the raw materials. Before the raw materials enter the production equipment, the protective films need to be removed so that the production equipment can directly process the raw materials. The two layers of protective films of the raw materials are respectively wound on two film rollers. When the production equipment drives the raw materials to be transmitted as a whole, the two film rollers rotate to drive the protective films on both sides to be torn off the raw materials so that only the raw materials enter the production equipment. The degree of automation of circuit board production is improved by the film rollers, and the labor cost of workers tearing off the protective films is reduced. At the same time, a conventional pair of film rollers are usually arranged front to back, which usually takes up more space. The pair of film rollers of the present application are arranged up and down, which saves a lot of space compared with the conventional setting and improves the utilization rate of the working space.

[0021] Preferably, a steering sensor, a controller and an alarm are provided in the frame, the steering sensor is used to measure the axis steering data of the film roller, the controller is used to judge whether the axis steering of the film roller changes when the steering sensor senses the axis steering data, and drive the alarm to sound an alarm when the axis steering of the film roller changes.

[0022] By adopting the above technical solution, hot pressing is required in the process of raw material processing. In this process, the protective film may be adhered to the raw material, causing the protective film to be transported to the production equipment together with the raw material. At this time, the protective film pulls the film roller to rotate in the opposite direction. After the steering sensor senses the change in the direction of the film roller, the controller controls the alarm to sound an alarm. At this time, the worker can stop the production equipment and tear the protective film off the raw material and roll it back onto the film roller. The use of alarms and sensors can improve the safety protection of film tearing and reduce the risk of accidents.

[0023] Preferably, a mounting frame is provided on the splicing board surface, and the mounting frame extends perpendicularly to the raw material transmission direction. A detection component is provided on the mounting frame, and the detection component is used to detect the flatness of the cut of the raw material placed on the splicing board surface. The mounting frame is also equipped with a cutting component for trimming the raw material after detection.

[0024] By adopting the above technical solution, when splicing two rolls of raw materials, the ends of the raw materials may be uneven, resulting in overlap after the two rolls of raw materials are spliced, affecting production. The ends of the raw materials are detected using a detection component. When the ends are uneven, the cutting component is activated to cut the circuit board so that the ends of the two rolls of raw materials that are close to each other are parallel to each other. At this time, the worker then glues the two raw materials to the tape to complete the splicing of the raw materials, thereby improving the splicing effect.

[0025] Preferably, the mounting frame includes a horizontal frame and a vertical frame, the vertical frame is fixedly mounted on the material receiving plate; the horizontal frame is mounted on a side of the vertical frame away from the splicing plate surface; a movable cavity is formed between the horizontal frame and the vertical frame for moving the raw materials after splicing is completed.

[0026] By adopting the above technical solution, after the cutting is completed, the raw material needs to be moved from the receiving plate back to the frame, and the receiving plate needs to be moved at the same time to facilitate subsequent operations by workers. Through the setting of the vertical frame and the horizontal frame, the raw material can be moved on the receiving plate through the movable cavity and thus returned to the frame.

[0027] Preferably, the cutting assembly includes a moving block and a cutting knife, the moving block is slidably mounted on the cross frame in a direction approaching or away from the raw material, and a first driving member for driving the moving block to slide is installed on the mounting frame; the cutting knife is fixedly mounted on a side of the moving block facing outside the material receiving plate, a guide surface is provided on a side of the moving block close to the raw material, and a receiving cavity is provided on a side of the moving block away from the raw material.

[0028] By adopting the above technical solution, when the detection component detects that the raw material is uneven, the first driving member is started to drive the moving block to move on the horizontal frame, driving the blade to start to abut against the raw material to cut the raw material, and at the same time the cut raw material segments are scooped up along the guide surface and fall into the receiving cavity of the sliding block as the sliding block moves, which is convenient for workers to recover; through the cutting component, workers only need to put the raw material directly on the receiving plate to automatically trim the raw material, thereby improving the overall automation level of the equipment.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. Compared with standing on one side of the frame along the material conveying direction to operate, the working space between two adjacent production equipment is increased. At this time, two workers can smoothly replace the materials on the coil shaft, which improves the working speed; in addition, by changing the working position and using the splicing plate, the raw materials can be quickly spliced, and there is no need to set up a tensioning mechanism, thus saving production space;

[0031] 2. The receiving plate slides on the frame. First, you only need to pull out the receiving plate when splicing raw materials to facilitate material replacement. After the splicing is completed, the receiving plate can be moved away during normal production to avoid obstruction of operation. Second, if the installation position of the receiving plate is fixed, the raw materials need to be completely pulled out and bypassed by the receiving plate before returning to the frame after the splicing is completed. After the receiving plate is slidably installed on the frame, you only need to pull the raw materials away from the surface of the receiving plate and push the receiving plate to return the raw materials to their original position.

[0032] 3. During splicing, the second limiting roller is used to abut against the raw material and clamp the raw material together with the first limiting roller to ensure stable transportation of the raw material between the various components and improve production stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the positions of existing workers when changing raw materials at the side.

[0034] Figure 2 It is a schematic diagram of the overall structure of a flexible PCB board raw material unwinding device according to Example 1 of the present application.

[0035] Figure 3 This is a schematic diagram of the state when a worker of a flexible PCB board raw material unwinding device replaces raw materials in Example 1 of the present application.

[0036] Figure 4 This is an overall structural diagram of a receiving plate of a flexible PCB raw material unwinding device in Example 1 of the present application.

[0037] Figure 5 It is a cross-sectional view of a mounting frame, a first limiting roller and a second limiting roller of a flexible PCB board raw material unwinding device in Example 1 of the present application.

[0038] Figure 6 This is a schematic diagram of the overall structure of a receiving plate of a flexible PCB raw material unwinding device in Example 2 of the present application.

[0039] Figure 7 This is a front view of a receiving plate of a flexible PCB raw material unwinding device in Example 2 of the present application.

[0040] Figure 8 yes Figure 6 A is an enlarged view of the middle image.

[0041] Description of reference numerals:

[0042] 1. Frame; 11. Reel shaft; 12. First limit roller; 13. Second limit roller; 14. Film roll roller; 15. Drive frame; 2. Receiving plate; 21. Vacuum generator; 22. Through hole; 23. Splicing plate surface; 231. First splicing surface; 232. Second splicing surface; 25. Transition shaft; 24. Mounting frame; 241. Horizontal frame; 242. Vertical frame; 3. Receiving trough; 4. Production equipment; 5. Detection component; 6. Cutting component; 61. Moving block; 611. Receiving chamber; 62. Cutting knife; 63. First drive member. DETAILED DESCRIPTION

[0043] The following is combined with Figure 2-8 This application is described in further detail.

[0044] Example 1

[0045] The present application embodiment discloses a flexible PCB board raw material unwinding device. Figure 2 A flexible PCB raw material unwinding device frame 1, a pair of coil shafts 11, a receiving plate 2 and a receiving slot 3, the frame 1 is located at the input end of a production device 4 used in conjunction with the unwinding device, and the production device 4 is located on the top of the frame 1, and the production device 4 is used to extract raw materials from the unwinding device; the two coil shafts 11 are rotatably mounted on the frame 1, and each coil shaft 11 is used to place raw materials; the receiving plate 2 is slidably mounted on the frame 1 away from the production device along the transportation direction of the raw materials placed vertically on its own board surface On one side of the production equipment 4, the two coil shafts 11 are located between the production equipment 4 and the receiving plate 2; the receiving plate 2 is provided with a stabilizing component for stabilizing the raw materials on each coil shaft 11 on the receiving plate 2; the stabilizing component includes a vacuum generator 21 and an air pipe, a through hole 22 is provided on the receiving plate 2, a negative pressure chamber connected to the through hole 22 is provided in the receiving plate 2, and the vacuum generator 21 is connected to the negative pressure chamber through the air pipe; the receiving trough 3 is fixedly installed on the frame 1 and is located directly below the two coil shafts 11;

[0046] Reference Figure 2 and Figure 3 When the raw material needs to be replaced on the frame 1, the worker stands on the end of the frame 1 away from the production equipment 4, loosens the original raw material from the coil shaft 11, and forms an extension section 111. At this time, the production equipment 4 extracts the extension section 111 of the continued raw material, and the extension section 111 naturally hangs down into the receiving groove 3. The worker starts the vacuum generator 21, and stably places the end of the extension section 111 away from the production equipment 4 and the beginning of the next roll of raw material on the receiving plate 2, and splices the two rolls of raw material, and then moves the receiving plate 2 away until the roll is completely separated from the receiving plate 2, completing the splicing of the rolls.

[0047] Reference Figure 3 and Figure 4The two coil shafts 11 are respectively located on both sides of the material receiving plate 2 in the vertical direction. The splicing plate surface 23 of the material receiving plate 2 with a through hole 22 faces the outside of the frame 1 and is inclined. The two ends of the material receiving plate 2 along the raw material transportation direction are rotatably installed with transition shafts 25, and the raw materials are all wound around the transition shafts 25; the splicing plate surface 23 includes a first splicing surface 231 and a pair of second splicing surfaces 232. The two second splicing surfaces 232 are respectively located at the two ends of the first splicing surface 231 along the raw material transportation direction. The two second splicing surfaces 232 are respectively placed on the raw materials on the two coil shafts 11. The first splicing surface 231 is provided with adhesive tape for bonding the raw materials on the two material rolls 11; after starting the vacuum generator 21, the adhesive tape is first placed on the first splicing surface 231 with the sticky side facing upwards, and then the previous roll of raw materials is placed on the second splicing surface 232 of the material receiving plate 2 close to the material roll 11, and then the next roll of raw materials is placed on the other second splicing surface 232 close to the material roll 11, and the two rolls of raw materials are stacked on the adhesive tape respectively, and the worker then sticks another piece of adhesive tape on the upward side of the two rolls of raw materials to complete the splicing.

[0048] Reference Figure 3 and Figure 5 The frame 1 is rotatably mounted with a first limiting roller 12 between the coil shaft 11 and the production equipment 4, and the raw material is wound around the first limiting roller 12; the frame 1 is provided with a driving frame 15 on one side of the first limiting roller 12, and the driving frame 15 is slidably mounted with a second limiting roller 13 in a direction close to or away from the first limiting roller 12. When the next roll of raw material needs to be replaced, the second limiting roller 13 slides toward the direction close to the first limiting roller 12 and abuts against the raw material; in this embodiment, the second limiting roller 13 includes a rolling part and a fixed part, the rolling part is rotatably mounted on the fixed part, and a cylinder is fixedly mounted on the driving frame 15, and the output end of the cylinder is fixedly connected to the fixed part. When the extension section 111 falls naturally, in order to reduce the deviation of the extension section 111 during the transmission process, when the coil is started to be spliced, the cylinder is started to drive the second limiting roller 13 to abut against the raw material wound around the first limiting roller 12, thereby clamping the raw material with the first limiting roller 12, so that the raw material can be stably transmitted and the deviation is reduced.

[0049] Reference Figure 2 and Figure 3The frame 1 is rotatably mounted with a pair of film rolls 14 between the production equipment 4 and the first limiting roller 12, and the raw material includes a film tearing section located between the production equipment 4 and the first limiting roller 12; the film tearing section is tilted toward the production equipment 4 along the frame 1, and the two film rolls 14 are respectively located on both sides of the film tearing section and are arranged up and down in the vertical direction, and the two film rolls 14 are used to wind two layers of protective film on the raw material; a steering sensor, a controller and an alarm are arranged in the frame 1, the steering sensor is used to measure the rotation axis steering data of the film roll 14, and the controller is used to determine whether the rotation axis steering of the film roll 14 changes when the steering sensor senses that the rotation axis steering of the film roll 14 changes according to the rotation axis steering data, and drive the alarm to sound when the rotation axis steering of the film roll 14 changes; when the steering sensor senses that the rotation axis steering of the film roll 14 changes, it means that the protective film is extracted by the production equipment 4 along with the raw material, and the film tearing operation cannot be completed normally, the controller drives the alarm to sound, and the worker can stop the machine operation, tear off the protective film and rewind it on the film roll 14.

[0050] The implementation principle of a flexible PCB board raw material unwinding device in Example 1 of the present application is: when the raw materials need to be spliced, the worker starts the stabilizing component and first places the adhesive tape on the first splicing surface 231 of the receiving plate 2, and then places the two rolls of raw materials on the two second splicing surfaces 232 and on the stickers respectively, and then sticks the adhesive tape on the side of the two rolls of raw materials away from the receiving plate 2, and the splicing of the stickers can be completed.

[0051] Example 2

[0052] Reference Figure 6 and Figure 7 The difference between Example 2 of the present application and Example 1 is that a mounting frame 24 is provided on the splicing board surface 23, and the mounting frame 24 is extended perpendicular to the raw material transmission direction. A detection component 5 is provided on the mounting frame 24, and the detection component 5 is used to detect the flatness of the cut of the raw material placed in the splicing board surface 23. A cutting component 6 for trimming the raw material after detection is also installed on the mounting frame 24.

[0053] The mounting frame 24 includes a horizontal frame 241 and a vertical frame 242. The vertical frame 242 is fixedly mounted on the material receiving plate 2. The horizontal frame 241 is mounted on the side of the vertical frame 242 away from the splicing plate surface 23. A moving cavity is formed between the horizontal frame 241 and the vertical frame 242 for moving the raw materials after splicing.

[0054] The detection component 5 includes a pair of distance sensors installed on the receiving plate 2. The two distance sensors are fixedly installed on both sides of the splicing plate surface 23 perpendicular to the raw material transmission direction. The two distance sensors are used to sense the distance between the raw material and the distance sensors on both sides. When the distance sensor senses that the sum of the values ​​from the raw material to the distance sensors on both sides changes, the cutting component 6 is started to cut the raw material.

[0055] Reference Figure 6 and Figure 8 The cutting assembly 6 includes a moving block 61 and a cutting knife 62. The moving block 61 is slidably mounted on the cross frame 241 in the direction of approaching or moving away from the raw material. A first driving member 63 for driving the moving block 61 to slide is installed on the mounting frame 24; the cutting knife 62 is fixedly mounted on the side of the moving block 61 facing the outside of the material receiving plate 2, and a guide surface is provided on the side of the moving block 61 close to the raw material. A avoidance groove for the cut waste to pass through is provided on the moving block 61, and a receiving cavity 611 is provided on the side of the moving block 61 away from the raw material. In this embodiment, the first driving member 63 is a screw motor module, the screw is rotatably mounted on the cross frame 241, the moving block 61 is threadedly mounted on the screw, the motor is fixedly mounted on the cross frame 241 and the output end of the motor is fixedly connected to the screw, and when the screw rotates, the moving block 61 is driven to slide on the material receiving plate 2.

[0056] The implementation principle of a flexible PCB board raw material unwinding device in Example 2 of the present application is: when the detection component 5 detects that the cut of the raw material is uneven, the motor is started to drive the screw to rotate, thereby driving the moving block 61 to move on the receiving plate 2 to cut the raw material until the detection component 5 detects that the end of the raw material is flat.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flexible PCB board raw material unwinding device, characterized in that: The invention comprises a frame (1), a pair of coil shafts (11) and a receiving plate (2); the frame (1) is located at the input end of a production device (4) used in conjunction with an unwinding device, and the production device (4) is used to extract raw materials from the unwinding device; the two coil shafts (11) are rotatably mounted on the frame (1), and each of the coil shafts (11) is used to place the raw materials; the receiving plate (2) is mounted on a side of the frame (1) away from the production device (4), and the two coil shafts (11) are located between the production device (4) and the receiving plate (2); a stabilizing component is mounted on the receiving plate (2) for stabilizing the raw materials on each coil shaft (11) on the receiving plate (2); The frame (1) is rotatably mounted with a first limiting roller (12) between the winding shaft (11) and the production equipment (4), and the raw material is wound around the first limiting roller (12); the frame (1) is rotatably mounted with a pair of film rolling rollers (14) between the production equipment (4) and the first limiting roller (12), and the raw material includes a film tearing section located between the production equipment (4) and the first limiting roller (12); the film tearing section is arranged along the frame (1) in an inclined manner toward the production equipment (4), and the two film rolling rollers (14) are respectively located on both sides of the film tearing section and are arranged vertically up and down, and the two film rolling rollers (14) are used to wind two layers of protective film for the raw material; The frame (1) is provided with a steering sensor, a controller and an alarm, wherein the steering sensor is used to measure the rotation axis steering data of the film rolling roller (14), and the controller is used to determine whether the rotation axis steering of the film rolling roller (14) sensed by the steering sensor has changed based on the rotation axis steering data, and to drive the alarm to sound an alarm when the rotation axis steering of the film rolling roller (14) has changed.

2. The flexible PCB raw material unwinding device according to claim 1, characterized in that: The stabilizing component comprises a vacuum generator (21) and an air pipe, a through hole (22) is provided on the receiving plate (2), a negative pressure chamber connected to the through hole (22) is provided in the receiving plate (2), and the vacuum generator (21) is connected to the negative pressure chamber through the air pipe.

3. The flexible PCB raw material unwinding device according to claim 2, characterized in that: The two material coiling shafts (11) are respectively located on both sides of the material receiving plate (2) in the vertical direction; the material receiving plate (2) is provided with a splicing plate surface (23) with the through hole (22) facing the outside of the frame (1) and is inclined; both ends of the material receiving plate (2) along the raw material transportation direction are rotatably mounted with transition shafts (25), and the raw materials are all wound around the transition shafts (25); the splicing plate surface (23) includes a first splicing surface (231) and a pair of second splicing surfaces (232); the two second splicing surfaces (232) are respectively located at both ends of the first splicing surface (231) along the raw material transportation direction; the two second splicing surfaces (232) are respectively placed with the raw materials on the two material coiling shafts (11); the first splicing surface (231) is placed with adhesive tape for bonding the raw materials on the two material coiling shafts (11).

4. The flexible PCB raw material unwinding device according to claim 3 is characterized in that: The receiving plate (2) is slidably mounted on the frame (1), and the sliding direction of the receiving plate (2) is perpendicular to the raw material transportation direction on the receiving plate (2).

5. The flexible PCB raw material unwinding device according to claim 1, characterized in that: The frame (1) is provided with a driving frame (15) on one side of the first limiting roller (12); the driving frame (15) is slidably mounted with a second limiting roller (13) in a direction approaching or away from the first limiting roller (12); when the next roll of the material needs to be replaced, the second limiting roller (13) slides in a direction approaching the first limiting roller (12) and abuts against the material.

6. The flexible PCB board raw material unwinding device according to claim 4, characterized in that: A mounting frame (24) is arranged on the splicing board surface (23), and the mounting frame (24) is perpendicular to the splicing board surface (23). A detection component (5) is arranged on the mounting frame (24), and the detection component (5) is used to detect the flatness of the cut of the raw material placed in the splicing board surface (23). The mounting frame (24) is also equipped with a cutting component (6) for trimming the raw material after detection.

7. The flexible PCB raw material unwinding device according to claim 6, characterized in that: The mounting frame (24) comprises a horizontal frame (241) and a vertical frame (242); the vertical frame (242) is fixedly mounted on the material receiving plate (2); the horizontal frame (241) is mounted on a side of the vertical frame (242) away from the splicing plate surface (23); and a moving cavity is formed between the horizontal frame (241) and the vertical frame (242) for the movement of the raw materials after splicing.

8. The flexible PCB raw material unwinding device according to claim 7, characterized in that: The cutting assembly (6) comprises a moving block (61) and a cutting knife (62); the moving block (61) is slidably mounted on the cross frame (241) in a direction approaching or moving away from the raw material; a first driving member (63) for driving the moving block (61) to slide is mounted on the mounting frame (24); the cutting knife (62) is fixedly mounted on a side of the moving block (61) facing the outside of the receiving plate (2); a guide surface is provided on a side of the moving block (61) close to the raw material, and a receiving cavity (611) is provided on a side of the moving block (61) away from the raw material.

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