An automatic film applicator for circuit board production

Abstract

This invention conforms to the field of integrated circuit manufacturing technology, specifically an automatic film laminating machine for circuit board production. It includes a base, a fixed frame fixed to the base, symmetrically distributed support shells fixed to the fixed frame, and a symmetrically distributed support frame shared by the symmetrically distributed support shells. An output module is fixed to each support shell, and a fixed plate is fixed to each support shell. A sliding plate is threadedly connected to the output shaft of the output module. Uniformly distributed rollers are installed between all the fixed plates and between all the sliding plates. Uniformly distributed fixed heating rollers are also installed between all the fixed plates and between all the sliding plates. A steel strip is wound around all the rollers and fixed heating rollers on the fixed plate and all the rollers and fixed heating rollers on the sliding plate. This invention gradually heats the film by progressively changing the temperature of all the fixed heating rollers, while simultaneously using the fixed heating rollers to position the steel strip, ensuring that the dry film adhesive layer is heated evenly and smoothly.

Description

Technical Field

[0001] This invention relates to the field of integrated circuit manufacturing technology, and in particular to an automatic film application machine for circuit board production. Background Technology

[0002] In PCB manufacturing, copper-clad laminates are mainly laminated using an automatic PCB laminating machine. Its core function is to attach a special dry film to the copper foil surface of the PCB for subsequent exposure and development processes. The existing PCB laminating method mainly uses a roller-type pressing device, which works by linearly pressing the dry film onto the PCB using a pair of heated rollers.

[0003] However, those skilled in the art have found that this line contact, instantaneous pressure method has inherent defects. During extrusion, the pressure is mainly concentrated on a narrow contact line through a pair of heated rollers contacting the dry film. The dry film is a material with a certain degree of elasticity and can become sticky at high temperatures. When the heated rollers make direct line contact with the dry film, the dry film is heated directly and instantaneously, which can easily lead to thermal stress concentration in the adhesive layer. This affects the final adhesion between the dry film and the copper foil surface of the copper-clad laminate. In severe cases, it can even cause the dry film to deform and form wrinkles on the copper foil surface of the copper-clad laminate. Summary of the Invention

[0004] To overcome the shortcomings mentioned in the background above, the present invention provides an automatic film application machine for circuit board production.

[0005] The technical solution is as follows: An automatic laminating machine for circuit board production includes a base, a fixed frame and several conveying rollers fixedly connected to the base, symmetrically distributed support shells fixedly connected inside the fixed frame, a first conveying component and a symmetrically distributed support frame shared by the symmetrically distributed support shells, a lower film assembly fixedly connected to the support frame, a second conveying component shared by the symmetrically distributed support shells, an output module fixedly connected to the support shell, a fixed plate fixedly connected to the support shell, an output shaft of the output module passing through adjacent fixed plates and connected to a sliding plate via a screw thread, uniformly distributed rollers installed between all the fixed plates and between all the sliding plates, uniformly distributed fixed heating rollers installed between all the fixed plates and between all the sliding plates, and a steel strip wound around all the rollers and fixed heating rollers on the fixed plate and on the sliding plate, the steel strip being used to compress the dry film;

[0006] The support frame is fixedly connected to symmetrically distributed circular plates, and each circular plate is rotatably connected to a swing rod. A first elastic element is provided between the circular plate and the adjacent swing rod. The symmetrically distributed swing rods are fixedly connected to each other. The swing roller is used to squeeze adjacent dry films.

[0007] Furthermore, the temperature on all the fixed heating rollers gradually increases from the end closest to the first conveying assembly to the end furthest from the first conveying assembly. The first conveying assembly has two conveying rollers symmetrically distributed vertically. The lower film assembly has two take-up rollers wound with dry film and collecting waste film. The second conveying assembly has two conveying rollers symmetrically distributed vertically. The output module is a drive motor.

[0008] Furthermore, the outer surface of the steel strip is provided with a high-temperature resistant silicone layer for cushioning when in contact with the dry film.

[0009] Furthermore, the circular plate is provided with an arc-shaped groove, and the swing rod slides within the arc-shaped groove corresponding to the circular plate, with the central angle of the arc-shaped groove being 90°, which is used to limit the maximum rotation angle of the swing rod.

[0010] Furthermore, a pressure sensor is fixedly mounted on the circular plate, and the pressure sensor is used to detect the deflection position of the swing arm.

[0011] Furthermore, it also includes symmetrically distributed first electric push rods, which are fixedly connected to adjacent support shells. The support shells are fixedly connected to first slide rails, and the telescopic ends of the first electric push rods are fixedly connected to second slide rails. The symmetrically distributed first slide rails are jointly provided with symmetrically distributed arc-shaped pressure plates, which are used to guide the symmetrically distributed arc-shaped pressure plates.

[0012] Furthermore, the second slide rail is slidably connected to symmetrically distributed first rotating motors, and the output shafts of the first rotating motors at the same height on different second slide rails are all fixedly connected to the corresponding arc-shaped pressure plate.

[0013] Furthermore, a straight plate is fixedly connected to one of the arc-shaped pressure plates, and a cutting blade is slidably connected to the straight plate. A second elastic element is provided between the straight plate and the cutting blade. A second rotating motor is fixedly connected to one of the support shells, and a fixed cylinder is fixedly connected to the support shell. A sliding block is slidably connected to the fixed cylinder. The output shaft of the second rotating motor drives the symmetrically distributed sliding blocks to move relative to each other through a lead screw. The sliding blocks are used to squeeze the cutting blade.

[0014] Furthermore, it also includes symmetrically distributed second electric push rods, which are respectively fixed between the symmetrically distributed fixed plates and between the symmetrically distributed sliding plates. The telescopic ends of the second electric push rods are equipped with sliding heating rollers through the first mounting bracket. The sliding heating rollers are used to compress the steel strip. Third electric push rods are fixed between the symmetrically distributed fixed plates and between the symmetrically distributed sliding plates. The telescopic ends of the third electric push rods are equipped with tension rollers through the second mounting bracket. The tension rollers are used to compress the steel strip.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention achieves preheating of the dry film by gradually changing the temperature of all fixed heating rollers, and gradually heats it. At the same time, the positioning of the steel strip by the fixed heating rollers increases the contact area between the steel strip and the dry film, so that the dry film adhesive layer is heated evenly and gently, reducing the impact of instantaneous heating of the dry film and improving the reliability of adhesion.

[0016] This invention applies constant pressure to the dry film through a swing roller under the action of the first elastic element, effectively compensating for minor changes in the film roll or copper-clad laminate, ensuring that the dry film remains taut and flat during transport, and fundamentally reducing wrinkling and loosening of the dry film.

[0017] This invention uses two upper and lower arc-shaped pressure plates to compress the dry film on two adjacent copper-clad laminates, reducing the phenomenon of dry film shifting and wrinkling due to its own elasticity during cutting. At the same time, after cutting, the arc-shaped pressure plates rotate with the movement of the dry film, so that the arc-shaped pressure plates compress the cut dry film, reducing the phenomenon of dry film shifting during use and lamination. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the first conveying component, support frame, and lower membrane component of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the support frame, circular plate, and first slide rail of the present invention;

[0021] Figure 4 This is a three-dimensional plan view of the support frame, lower membrane assembly, and steel strip of the present invention;

[0022] Figure 5 This is a three-dimensional structural diagram of the roller and steel strip of the present invention;

[0023] Figure 6 This is a three-dimensional structural diagram of the output module, sliding plate, and roller shaft of the present invention;

[0024] Figure 7 This is a three-dimensional structural diagram of the circular plate and the first electric push rod of the present invention;

[0025] Figure 8 This is a three-dimensional structural diagram of the first electric push rod, the first slide rail, and the first rotary motor of the present invention;

[0026] Figure 9 This is a three-dimensional planar schematic diagram of the straight plate and cutting blade of the present invention;

[0027] Figure 10 This is a three-dimensional structural diagram of the pressure sensor and swing rod of the present invention;

[0028] Figure 11 This is a three-dimensional planar schematic diagram of the first slide rail and the arc-shaped pressure plate of the present invention;

[0029] Figure 12 This is a three-dimensional structural diagram of the second rotating motor and the fixed cylinder of the present invention;

[0030] Figure 13 This is a three-dimensional planar schematic diagram of the straight plate, cutting blade, and second rotating motor of the present invention.

[0031] Reference numerals: 1-Base, 101-Conveyor roller, 2-Fixed frame, 21-Support shell, 3-First conveying assembly, 4-Support frame, 5-Lower film assembly, 6-Second conveying assembly, 7-Output module, 8-Fixed plate, 9-Sliding plate, 10-Roller shaft, 11-Fixed heating roller, 12-Steel belt, 201-Circular plate, 2011-Pressure sensor, 202-Swing rod, 203-Swing roller, 301-First electric push rod, 302-First slide rail, 303-Second slide rail, 304-Arc-shaped pressure plate, 401-First rotating motor, 501-Straight plate, 502-Cut blade, 503-Second rotating motor, 504-Fixed cylinder, 505-Sliding block, 601-Second electric push rod, 6011-Sliding heating roller, 602-Third electric push rod, 603-Tension roller. Detailed Implementation

[0032] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0033] Example 1: An automatic film-applying machine for circuit board production, combined with... Figures 1-7 and Figure 11As shown, the system includes a base 1, a fixed frame 2, and several conveyor rollers 101. All conveyor rollers 101 are in two groups, located on the left and right sides of the fixed frame 2 respectively. The conveyor rollers 101 are used to convey copper-clad laminates. Two symmetrically distributed support shells 21 are fixed inside the fixed frame 2. The two symmetrically distributed support shells 21 together house a first conveying assembly 3 and two symmetrically distributed support frames 4. The first conveying assembly 3 has two vertically distributed conveyor rollers. A lower film assembly 5 is fixed to the support frames 4. The lower film assembly 5 has two take-up rollers. One take-up roller is wound with the dry film to be processed and releases the dry film. The other take-up roller is used to collect waste film. The lower film assembly 5 is existing equipment. A second conveying assembly 6 is jointly arranged on the symmetrically distributed support shells 21. The second conveying assembly 6 has two conveyor rollers. Both the conveyor rollers on the first conveying assembly 3 and the conveyor rollers on the second conveying assembly 6 are used to convey copper-clad laminates. An output module 7, which is a drive motor, is fixed to the support shells 21. A fixed plate 8 is fixed to the support shells 21. The output module 7... The output shaft passes through adjacent fixed plates 8 and is connected to a sliding plate 9 via a lead screw thread. Rollers 10 are evenly distributed between all fixed plates 8 and all sliding plates 9. All rollers 10 are divided into two symmetrically distributed groups, with four rollers 10 in each group. All rollers 10 have rough surfaces. Fixed heating rollers 11 are also evenly distributed between all fixed plates 8 and all sliding plates 9. These fixed heating rollers 11 are divided into two symmetrically distributed groups, with four rollers 11 in each group. There are three of them. The temperature on all the fixed heating rollers 11 gradually increases from left to right. All the rollers 10 and all the fixed heating rollers 11 on the fixed plate 8 and all the rollers 10 and all the fixed heating rollers 11 on the sliding plate 9 are together wound with a steel belt 12. All the rollers 10 are used to drive the adjacent steel belts 12 to rotate. The steel belts 12 are used to squeeze the dry film. All the fixed heating rollers 11 are used to conduct heat to the adjacent steel belts 12. The outer surface of the steel belt 12 is provided with a high-temperature resistant silicone layer for buffering when in contact with the dry film.

[0034] Combination Figure 3 , Figure 4 , Figure 7 , Figure 10 and Figure 11As shown, the support frame 4 is fixedly connected to two circular plates 201 symmetrically distributed front and rear. The circular plates 201 are rotatably connected to a swing rod 202. The circular plates 201 are provided with arc-shaped grooves. The swing rod 202 slides in the arc-shaped grooves on the corresponding circular plates 201, and the central angle of the arc-shaped grooves is 90°, which is used to limit the maximum rotation angle of the swing rod 202. A first elastic element, which is a torsion spring, is provided between the circular plates 201 and the adjacent swing rods 202. A swing roller 203 is fixedly connected between the two symmetrically distributed swing rods 202. The swing roller 203 is used to squeeze the adjacent dry film. A pressure sensor 2011 is fixedly connected to the circular plates 201. The side of the swing rod 202 away from the corresponding swing roller 203 is set as a contact part. The pressure sensor 2011 is used to detect the deflection position of the contact part on the swing rod 202.

[0035] The working principle of this embodiment is as follows:

[0036] When using this device to apply film to copper-clad laminates, the operator first installs the dry film on the lower film assembly 5, then contacts the two sets of dry films with adjacent oscillating rollers 203. The dry film presses against the adjacent oscillating rollers 203, and the oscillating rod 202 slides along the circular plate 201 until the oscillating rod 202 reaches the desired position. Figure 4 In the state shown, the first elastic element between the circular plate 201 and the swing roller 203 is twisted and stores force. At this time, the dry film is in a taut state. Then, the two sets of dry films are passed from the left through the two rollers of the second conveying assembly 6 and through the two steel belts 12. The dry film stops moving and the installation of the dry film is completed.

[0037] After the dry film is installed, the worker places an unfilmed copper-clad laminate onto the conveyor roller 101 mounted on the left side of the base 1. The device is then activated, and the conveyor roller 101, the conveyor rollers on the first conveyor assembly 3, the conveyor rollers on the second conveyor assembly 6, and all the roller shafts 10 begin to rotate together. The roller shafts 10 drive the corresponding steel belts 12 to rotate, and the steel belts 12 drive the fixed heating rollers 11 to rotate together. The conveyor roller 101 on the left side of the base 1 begins to convey the copper-clad laminate (the conveying direction is from left to right). The unfilmed copper-clad laminate then enters between the two conveyor rollers on the first conveyor assembly 3. The two conveying rollers on the first conveying assembly 3 begin to squeeze the copper-clad laminate. The conveying rollers on the first conveying assembly 3 and the conveying roller 101 on the left side of the base 1 together drive the copper-clad laminate to move. As the copper-clad laminate moves, it comes into contact with two sets of dry films. Then, the conveying rollers on the second conveying assembly 6 and the copper-clad laminate together squeeze the two sets of dry films. Then, the lower film assembly 5 begins to release the film. Under the squeezing action of the copper-clad laminate and the second conveying assembly 6, the dry film and the copper-clad laminate move together. The two sets of dry films are respectively bonded to the top and bottom of the copper-clad laminate. The conveying rollers of the second conveying assembly 6 drive the copper-clad laminate to move through the dry film.

[0038] As the conveying rollers of the second conveying assembly 6 rotate, the two sets of dry films squeeze the adjacent swing rollers 203 respectively. The swing rollers 203 drive the adjacent swing rods 202 to slide within the corresponding circular plates 201 until the swing rods 202 contact the adjacent pressure sensors 2011. At this time, the swing rods 202 stop swinging, and the dry film is in a taut state. Then, the copper-clad laminate loses contact with the conveying rollers installed on the left side of the base 1. Before the part of the dry film that is attached to the copper-clad laminate contacts the steel strip 12, the output module 7 is started first. The output shaft of the output module 7 drives the sliding plate 9 to move upward through the lead screw. The sliding plate 9 drives all the roller shafts 10 and all the fixed heating rollers 11 on it to move together. The roller shafts 10 on the sliding plate 9 and the fixed heating rollers 11 on the sliding plate 9 together drive the steel strip 12 to move upward together until the gap between the steel strip 12 on the sliding plate 9 and the steel strip 12 on the fixed plate 8 corresponds to the thickness of the two sets of dry films and the copper-clad laminate. Then, the output module 7 is turned off, and the sliding plate 9 stops moving upward.

[0039] When the sliding plate 9 stops moving, the part of the dry film and the copper-clad laminate that are attached to it comes into contact with the adjacent steel strip 12, and the copper-clad laminate enters between the two steel strips 12. The conveying roller of the second conveying assembly 6 and the steel strip 12 together drive the adjacent dry film to move. The steel strip 12 begins to squeeze and drive the dry film and the copper-clad laminate to move. The adjacent steel strip 12 is heated by the fixed heating roller 11, which gradually increases in temperature from left to right, so that the steel strip 12 preheats the dry film and gradually heats the dry film, so that the dry film adheres to the copper-clad laminate. At the same time, the fixed heating roller 11 is used to position the steel strip 12, which increases the contact area between the steel strip 12 and the dry film, so that the dry film adhesive layer is heated evenly and gently, reducing the impact of instantaneous heating of the dry film and improving the reliability of adhesion.

[0040] As the steel belt 12 moves the dry film and the copper-clad laminate, the conveyor roller of the second conveying assembly 6 gradually loses pressure on the copper-clad laminate. The two sets of dry films adhere to the top and bottom of the copper-clad laminate, respectively. As the copper-clad laminate moves, it completely enters between the two steel belts 12. The dry film on the copper-clad laminate comes into contact with the conveyor roller 101 on the right side of the base 1 until the dry film on the copper-clad laminate loses contact with the two steel belts 12. Then, the operator removes the copper-clad laminate with the dry film adhered to the right conveyor roller 101, completing the copper-clad laminate application process. The entire device is then shut down. (It should be noted that the lower film assembly 5 is only installed after each use when the dry film on it is finished, and does not need to be installed every time.) The copper-clad laminate is placed back on the conveyor roller on the left side of the base 1 and the above steps are repeated when the device is used for the next application.

[0041] During the process of applying film to the copper-clad laminate, when the dry film becomes loose, it loses its squeezing force on the oscillating roller 203. Under the action of the first elastic element, the oscillating rod 202 drives the adjacent oscillating roller 203 to slide along the circular plate 201. At this time, the oscillating rod 202 loses contact with the adjacent pressure sensor 2011 (it should be noted that when the dry film is not loose, the pressure sensor 2011 and the adjacent oscillating rod 202 are in contact). The film lowering assembly 5 stops film lowering. At this time, the conveying roller of the second conveying assembly 6 and the steel belt 12 continue to drive the dry film between them to the right and gradually tighten the dry film. During this process, the dry film squeezes the adjacent oscillating roller 203 until the oscillating rod 202 contacts the pressure sensor 2011 again, and the film lowering assembly 5 continues to start film lowering.

[0042] Example 2: Based on Example 1, the existing device does not fix and press the edges of two adjacent copper-clad laminates and the corresponding positions of the dry film when cutting the dry film. When the cutting blade cuts the dry film, the cutting blade presses down on the dry film, which causes the dry film itself to stretch, causing the dry film already attached to the copper-clad laminate to deform or even tear, resulting in film application failure and affecting the progress of the workflow.

[0043] Combination Figure 3 , Figure 4 , Figures 7-9 and Figures 11-13 As shown, it also includes two first electric push rods 301 symmetrically distributed front and rear. The first electric push rods 301 are fixed to adjacent support shells 21. The support shells 21 are fixed to first slide rails 302. The first slide rails 302 are composed of two inclined parts and one vertical part, with the vertical part located between the two inclined parts. The telescopic end of the first electric push rods 301 is fixed to a second slide rail 303. The two symmetrically distributed first slide rails 302 are jointly provided with two symmetrically distributed arc-shaped pressure plates 304. The arc-shaped pressure plates 304 are composed of two symmetrically distributed arc plates. The two symmetrically distributed first slide rails 302 are used to guide the two symmetrically distributed arc-shaped pressure plates 304.

[0044] Combination Figure 8 As shown, the second slide rail 303 is slidably connected to two first rotary motors 401 symmetrically distributed vertically. The output shafts of the first rotary motors 401 at the same height on different second slide rails 303 are fixedly connected to the corresponding arc-shaped pressure plate 304. The rotation speed of the output shaft of the first rotary motor 401 corresponds to the speed of the dry film and the copper clad laminate, ensuring that the arc-shaped pressure plate 304 remains in contact with the corresponding dry film during the movement of the dry film and the copper clad laminate.

[0045] Combination Figure 3 , Figure 9 , Figure 12 and Figure 13As shown, a straight plate 501 is fixedly connected to the upper arc-shaped pressure plate 304. A cutting blade 502 is slidably connected to the straight plate 501. The cutting blade 502 is used to cut the dry film. The cutting blade 502 is located between two arc-shaped plates on the upper arc-shaped pressure plate 304. A second elastic element, which is a spring, is provided between the straight plate 501 and the cutting blade 502. A second rotating motor 503 is fixedly connected to the front support shell 21. A fixed cylinder 504 is fixedly connected to the left side of the support shell 21. A sliding block 505 is slidably connected to the fixed cylinder 504. The sliding block 505 consists of a sliding part and a pressing part. The sliding part slides within the adjacent fixed cylinder 504, and the pressing part is used to press the cutting blade 502. The output shaft of the second rotating motor 503 drives the symmetrically distributed sliding blocks 505 to move relative to each other through a lead screw. The lead screw is provided with symmetrically distributed threads, and the sliding blocks 505 are connected to the corresponding threads.

[0046] The working principle of this embodiment is as follows:

[0047] Following the working principle of Embodiment 1, after one uncoated copper-clad laminate comes into contact with the second conveying component 6, the operator places another uncoated copper-clad laminate on the conveying roller on the left side of the base 1. At this time, the distance between two adjacent uncoated copper-clad laminates is less than the distance between two arc-shaped plates on the same arc-shaped pressure plate 304. As the copper-clad laminate moves to the right, the copper-clad laminate on the right side comes into contact with the second conveying component 6 first. Figure 4 For example, when the gap between two adjacent copper-clad laminates is located in the middle of the vertical part of the first slide rail 302, the conveying roller 101 on the base 1, the conveying roller on the first conveying assembly 3, the conveying roller on the second conveying assembly 6 and all the roller shafts 10 stop rotating, and the lower film assembly 5 is still in working state. Then, the two first electric push rods 301 are started. The telescopic ends of the two first electric push rods 301 respectively drive the adjacent second slide rails 303 to move to the left. The second slide rails 303 drive the two adjacent first rotary motors 401 to slide in the inclined part of the corresponding first slide rail 302. The first rotary motors 401 drive the adjacent arc-shaped pressure plate 304 to move. The upper arc-shaped pressure plate 304 drives the cutting blade 502 to move together through the straight plate 501.

[0048] When the first rotating motor 401 slides on the inclined portion of the corresponding first slide rail 302, the left side of the arc-shaped pressure plate 304 contacts the right side of the dry film, and the arc-shaped pressure plate 304 squeezes the dry film. Both arc-shaped pressure plates 304 move to the left and move in opposite directions, and the dry film begins to deform to the left. At this time, the squeezing force of the dry film on the adjacent swing roller 203 decreases. Under the action of the first elastic element, the swing rod 202 drives the adjacent swing roller 203 to swing. At this time, the swing roller 203 and the adjacent dry film are always in contact. As the second slide rail 303 continues to move, when the two arc-shaped pressure plates 304 move to the point where the inclined portion of the first slide rail 302 connects with the vertical portion of the first slide rail 302, the arc-shaped pressure plates 304 stop moving. At this time, the state of the two arc-shaped pressure plates 304 is as follows. Figure 11 In the state shown, the telescopic ends of the two first electric push rods 301 stop moving, and the two arc-shaped plates of the arc-shaped pressure plate 304 correspond to the edges of the two copper-clad laminates respectively, and squeeze the dry film at the edges of the two adjacent copper-clad laminates, reducing the phenomenon of the dry film shifting and wrinkling due to its own elasticity during shearing.

[0049] After the two arc-shaped pressure plates 304 stop moving, the second rotary motor 503 is started. The output shaft of the second rotary motor 503 drives the two sliding blocks 505 to move in opposite directions through the lead screw. The two sliding blocks 505 slide along the adjacent fixed cylinders 504 respectively. The pressing part of the two sliding blocks 505 contacts the cutting blade 502. The pressing parts of the two sliding blocks 505 together press the cutting blade 502 to make it move downward. At this time, the second elastic element is pressed by the cutting blade 502. The cutting blade 502 contacts the upper dry film and cuts the dry film. Then the cutting blade 502 continues to move downward and cuts the lower dry film. When the cutting is completed, the copper-clad laminate on the left side is not completely in contact with the dry film on the left side, while the copper-clad laminate on the right side is completely in contact with the dry film.

[0050] After cutting, the output shaft of the second rotary motor 503 drives the lead screw to reverse, which in turn drives the two sliding blocks 505 to move in opposite directions. The squeezing part of the sliding block 505 gradually loses its squeezing force on the cutting blade 502. Under the action of the second elastic element, the cutting blade 502 begins to move upward until the squeezing part of the sliding block 505 loses contact with the cutting blade 502. The cutting blade 502 returns to the unsqueezed state, and the two sliding blocks 505 return to their initial state. Then, the second conveying assembly 6, all the rollers 10, and the lower film assembly 5 are started. The dry film continues to be conveyed, and the copper-clad laminate moves together with the dry film. Simultaneously, all the first rotary motors 401 are activated. The output shafts of all the first rotary motors 401 drive the adjacent arc-shaped pressure plates 304 to rotate. The two arc-shaped pressure plates 304 rotate with the movement of the copper-clad laminate. Taking the upper arc-shaped pressure plate 304 as an example, as it rotates counterclockwise, the right arc-shaped plate gradually loses contact with the right-side dry film, while the left arc-shaped plate continues to contact the left-side dry film. The left arc-shaped plate continuously presses down on the left-side dry film, reducing the dry film thickness. In the event of a misalignment, the arc-shaped pressure plate 304 rotates along with the movement of the dry film on the left until the dry film on the right and the copper-clad laminate on the right enter the second conveying assembly 6. At this point, the arc-shaped plate on the right is about to contact the dry film on the left, and the arc-shaped pressure plate 304 stops rotating. Simultaneously, the first electric push rod 301 is activated and the lower film assembly 5 is closed. The telescopic end of the first electric push rod 301 drives the adjacent second slide rail 303 to move to the right. The two first rotation motors 401 on the same first slide rail 302 are guided by the first slide rail 302. Under the action of the second slide rail 303, the first rotating motor 401 moves, which in turn moves the second slide rail 303. The first rotating motor 401 moves the corresponding arc-shaped pressure plate 304 together. The two arc-shaped pressure plates 304 start to move to the right and move in opposite directions. Due to the conveying action of the second conveying assembly 6 and all the rollers 10, the dry film on the left side continues to contact the arc-shaped plate on its left side as the arc-shaped pressure plate 304 moves. During this process, the dry film is always in a taut state. The two sets of dry films are squeezed by the adjacent swing rods 202 and the swing rollers 203 to swing until the arc-shaped plate on the left side loses contact with the adjacent dry film. Then, the film lowering assembly 5 is started to continue film lowering. Then, the first rotating motor 401 is started. The output shaft of the first rotating motor 401 drives the corresponding arc-shaped pressure plate 304 to rotate. At the same time, as the second slide rail 303 continues to move to the right, the arc-shaped pressure plate 304 returns to its original position. Figure 4 As shown in the initial state, the two swing rods 202 are in contact with the adjacent pressure sensors 2011 respectively.

[0051] Example 3: Based on Example 2, combined with Figures 3-6As shown, it also includes two second electric push rods 601 symmetrically distributed vertically. The two second electric push rods 601 are respectively fixed between two symmetrically distributed fixed plates 8 and between two symmetrically distributed sliding plates 9. The telescopic ends of the second electric push rods 601 are equipped with sliding heating rollers 6011 through the first mounting frame. The sliding heating rollers 6011 are used to extrude the steel strip 12. The sliding heating rollers 6011 are located to the right of the rightmost fixed heating roller 11, and the temperature of the sliding heating rollers 6011 is higher than the temperature of all the fixed heating rollers 11. Third electric push rods 602 are fixed between the symmetrically distributed fixed plates 8 and between the symmetrically distributed sliding plates 9. The telescopic ends of the third electric push rods 602 are equipped with tension rollers 603 through the second mounting frame. The tension rollers 603 are used to extrude the steel strip 12.

[0052] The working principle of this embodiment is as follows:

[0053] Following the working principle of Embodiment 1, taking three copper-clad laminates as an example, during the heating of the dry film by the steel strip 12, the rotation axis of the tension roller 603 is horizontal with the axes of the two adjacent roller shafts 10 and is in contact with the steel strip 12. The rotation axis of the sliding heating roller 6011 is horizontal with the rotation axes of the corresponding three fixed heating rollers 11 and heats the steel strip 12. When the gap between the left copper-clad laminate and the middle copper-clad laminate is in the middle of the vertical part of the first slide rail 302 (during which the dry film is cut), the right edge of the middle copper-clad laminate is located between the two fixed heating rollers 11 distributed vertically on the right, and the left edge of the right copper-clad laminate is located between the two sliding heating rollers 6011 distributed vertically. The two second electric push rods 601 are activated, and the extension and retraction ends of the two second electric push rods 601 respectively drive the corresponding sliding heating rollers 6011 to move, and the sliding heating rollers 6011 move. The heating roller 6011 releases pressure on the adjacent steel strip 12. Simultaneously, the telescopic end of the third electric push rod 602 drives the tension roller 603 to move. The two tension rollers 603 respectively press the adjacent steel strip 12, keeping the steel strip 12 taut. At this time, the left edge of the copper-clad laminate on the right side loses contact with the steel strip 12, preventing the steel strip 12 from heating the dry film on the right side. At the same time, the conveyor roller 101 on the right side of the base 1 drives the copper-clad laminate on the right side to move to the right. The copper-clad laminate on the right side moves out of the space between the two sliding heating rollers 6011. Then, the copper-clad laminate with the dry film attached on the right side reaches the right conveyor roller 101, where it can be removed by the operator. At the same time, the two second electric push rods 601 respectively drive the adjacent sliding heating rollers 6011 to move, and the two third electric push rods 602 respectively drive the adjacent tension rollers 603 to move in opposite directions until all the sliding heating rollers 6011 and all the tension rollers 603 are in the same position. Figure 4After reaching the indicated state, the telescopic ends of all the second electric push rods 601 and all the telescopic ends of all the third electric push rods 602 stop moving. Through the cooperation of the sliding heating roller 6011 and the tensioning roller 603, the problem of overheating of the dry film under the fixed heating roller 11 and the sliding heating roller 6011 caused by the device stopping the conveying and cutting of the dry film is reduced. This reduces the situation of dry film deformation caused by overheating during the film application process. It should be noted that when the size of the copper clad laminate changes, the positions of the fixed heating roller 11 and the sliding heating roller 6011 can be adjusted adaptively so that the gap between the left copper clad laminate and the middle copper clad laminate is located in the middle position of the vertical part of the first slide rail 302, the right edge of the middle copper clad laminate is located between the two right fixed heating rollers 11, and the left edge of the right copper clad laminate is located between the two sliding heating rollers 6011.

[0054] In summary, the above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An automatic laminating machine for circuit board production, comprising a base (1), wherein a fixed frame (2) and a plurality of conveying rollers (101) are fixedly connected to the base (1), wherein symmetrically distributed support shells (21) are fixedly connected inside the fixed frame (2), wherein the symmetrically distributed support shells (21) are jointly provided with a first conveying assembly (3) and a symmetrically distributed support frame (4), wherein a lower film assembly (5) is fixedly connected to the support frame (4), wherein a second conveying assembly (6) is jointly provided to the symmetrically distributed support shells (21), and an output module (7) is fixedly connected to the support shells (21), characterized in that: It also includes symmetrically distributed fixed plates (8), which are fixed to adjacent support shells (21). The output shaft of the output module (7) passes through the adjacent fixed plates (8) and is connected to a sliding plate (9) by a screw thread. Rollers (10) are evenly distributed between all the fixed plates (8) and between all the sliding plates (9). Fixed heating rollers (11) are evenly distributed between all the fixed plates (8) and between all the sliding plates (9). All the rollers (10) and all the fixed heating rollers (11) on the fixed plates (8) and all the rollers (10) and all the fixed heating rollers (11) on the sliding plates (9) are wound with a steel strip (12). The steel strip (12) is used to extrude the dry film. The support frame (4) is fixedly connected to symmetrically distributed circular plates (201), and the circular plates (201) are rotatably connected to swing rods (202). A first elastic element is provided between the circular plates (201) and the adjacent swing rods (202). Swing rollers (203) are fixedly connected between the symmetrically distributed swing rods (202), and the swing rollers (203) are used to squeeze adjacent dry films. It also includes symmetrically distributed second electric push rods (601), which are respectively fixed between the symmetrically distributed fixed plates (8) and the symmetrically distributed sliding plates (9). The telescopic end of the second electric push rod (601) is equipped with a sliding heating roller (6011) through the first mounting frame. The sliding heating roller (6011) is used to squeeze the steel strip (12). A third electric push rod (602) is fixed between the symmetrically distributed fixed plates (8) and the symmetrically distributed sliding plates (9). The telescopic end of the third electric push rod (602) is equipped with a tension roller (603) through the second mounting frame. The tension roller (603) is used to squeeze the steel strip (12).

2. The automatic film-applying machine for circuit board production according to claim 1, characterized in that: The temperature on all the fixed heating rollers (11) gradually increases from the end closest to the first conveying assembly (3) to the end furthest from the first conveying assembly (3). The first conveying assembly (3) has two conveying rollers symmetrically distributed vertically. The lower film assembly (5) has two take-up rollers wound with dry film and collecting waste film. The second conveying assembly (6) has two conveying rollers symmetrically distributed vertically. The output module (7) is a drive motor.

3. An automatic film-applying machine for circuit board production according to claim 2, characterized in that: The outer surface of the steel strip (12) is provided with a high-temperature resistant silicone layer for buffering when in contact with the dry film.

4. An automatic film-applying machine for circuit board production according to claim 3, characterized in that: The circular plate (201) is provided with an arc-shaped groove, and the swing rod (202) slides in the arc-shaped groove corresponding to the circular plate (201), and the central angle of the arc-shaped groove is 90°, which is used to limit the maximum rotation angle of the swing rod (202).

5. An automatic film-applying machine for circuit board production according to claim 4, characterized in that: A pressure sensor (2011) is fixedly connected to the circular plate (201), and the pressure sensor (2011) is used to detect the deflection position of the swing rod (202).

6. An automatic film-applying machine for circuit board production according to claim 5, characterized in that: It also includes symmetrically distributed first electric push rods (301), which are fixed to the adjacent support shell (21). The support shell (21) is fixed to a first slide rail (302). The telescopic end of the first electric push rod (301) is fixed to a second slide rail (303). The symmetrically distributed first slide rails (302) are jointly provided with symmetrically distributed arc-shaped pressure plates (304). The symmetrically distributed first slide rails (302) are used to guide the symmetrically distributed arc-shaped pressure plates (304).

7. An automatic film-applying machine for circuit board production according to claim 6, characterized in that: The second slide rail (303) is slidably connected to symmetrically distributed first rotating motors (401), and the output shafts of the first rotating motors (401) at the same height on different second slide rails (303) are fixedly connected to the corresponding arc-shaped pressure plate (304).

8. An automatic film-applying machine for circuit board production according to claim 7, characterized in that: A straight plate (501) is fixedly connected to one of the arc-shaped pressure plates (304), and a cutting blade (502) is slidably connected to the straight plate (501). A second elastic element is provided between the straight plate (501) and the cutting blade (502). A second rotating motor (503) is fixedly connected to one of the support shells (21), and a fixed cylinder (504) is fixedly connected to the support shell (21). A sliding block (505) is slidably connected to the fixed cylinder (504). The output shaft of the second rotating motor (503) drives the symmetrically distributed sliding blocks (505) to move relative to each other through a lead screw. The sliding blocks (505) are used to squeeze the cutting blade (502).

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