High-frequency ptfe flexible copper-clad plate tension deviation correction laminating control equipment

Abstract

The application discloses a high-frequency PTFE flexible copper-clad plate tension deviation rectifying laminating control equipment and relates to the technical field of copper-clad plate production process control. The high-frequency PTFE flexible copper-clad plate tension deviation rectifying laminating control equipment adopts a multi-roller progressive gradient hot-pressing structure, and through the cooperation of the step-by-step increasing pressing force along the belt running direction and the continuous heating of the hot roller, the adhesive is sequentially discharged from the interlayer to wrap air and solvent volatile gas in the softening and melting stage, and then is fully infiltrated in the medium pressure and compacted and shaped in the high pressure, thereby completely breaking through the inherent limitation of the existing single-pass pressing process, such as incomplete air exhaust in low pressure and bubble formation in high pressure air sealing, random micro-bubble defects at the bonding interface between the polyimide film and the copper foil can be effectively eliminated, a dense and uniform bonding interface is formed, the effect can avoid the partial dielectric constant mutation and transmission impedance discontinuity problems caused by the interface gap, the reflection loss and distortion of high-frequency signals are significantly reduced, and the electrical performance consistency of the finished copper-clad plate is ensured.

Description

Technical Field

[0001] This invention relates to the field of copper clad laminate production process control technology, specifically to a high-frequency PTFE flexible copper clad laminate tension correction lamination control device. Background Technology

[0002] High-frequency PTFE flexible copper-clad laminate is a flexible electronic substrate made by hot-pressing polyimide film as the insulating substrate and ultra-thin copper foil. It is the core forming equipment in the roll-to-roll continuous production process. It integrates three major functional modules: dynamic tension control, lateral deviation correction, and precision hot-pressing lamination. During the continuous conveyor belt process, it achieves precise alignment of PTFE film and copper foil, constant tension and stable conveying, and uniform hot-pressing lamination, and finally forms a high-frequency PTFE flexible copper-clad laminate with uniform thickness, firm adhesion, and stable dimensions.

[0003] High-frequency PTFE flexible copper-clad laminate adopts a multi-layered composite structure in which copper foil, adhesive, polyimide film, adhesive, and copper foil are stacked in sequence. In its roll-to-roll continuous production process, a single-pass pre-pressing station is set up. The initial bonding of the multi-layer materials and the interlayer degassing are completed by a single pressurization. Due to the inherent limitations of the single-pass pressing process, when the pressing pressure is insufficient or the holding time is short, the air trapped inside the adhesive and the gas generated by the evaporation of trace amounts of solvent cannot be fully and thoroughly discharged. This will form randomly distributed micro-bubble defects at the bonding interface between the polyimide film and the copper foil, resulting in poor bonding between the interlayer interfaces and the presence of local interface gaps. These defects not only reduce the peel strength and structural reliability of copper-clad laminates, making them prone to delamination failure under bending and high-temperature conditions, but also cause local dielectric constant abrupt changes and transmission impedance discontinuities during high-frequency signal transmission, leading to problems such as signal reflection, increased transmission loss, and signal distortion. This severely restricts the electrical performance consistency and product yield of high-frequency PTFE flexible copper-clad laminates.

[0004] To address the aforementioned technical deficiencies, a multi-stage progressive pressing structure can be used to achieve gradient degassing and compaction of the adhesive layer, thoroughly eliminating interlayer microbubbles, ensuring smooth and precise alignment of multi-layer rolls, improving the consistency of electrical properties and production yield of finished products, and thus solving the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a high-frequency PTFE flexible copper clad laminate tension correction lamination control device, which solves the problems mentioned in the background art.

[0006] To achieve this objective, the present invention adopts the following technical solution: A high-frequency PTFE flexible copper clad laminate tension correction lamination control device includes a device base, and a processing component, a lamination component, a correction component and a pressure control component are arranged and installed from left to right on the top of the device base. The lamination assembly includes a pressing platform fixedly installed on the top of the equipment base. A protective frame is installed on the top of the pressing platform. The protective frame has openings at both ends for the flexible copper-clad laminate to enter and exit. A mounting frame is provided on the top of the protective frame. A protective cover is installed on the top of the mounting frame. Several guide grooves are evenly opened on the top of the protective frame. A push cylinder is slidably installed on the inner wall of each guide groove. Guide protrusions are fixedly installed on the front and rear parts of the outer wall of each push cylinder to guide and limit the push cylinder to prevent rotation when it moves up and down along the inner wall of the guide groove. A threaded groove is opened on the inner wall of each push cylinder. A feed screw is rotatably installed on the inner wall of the mounting frame at the position corresponding to the push cylinder. The outer wall of the feed screw is threadedly connected to the corresponding threaded groove on the inner wall of the push cylinder. The bottom extension length of the push cylinder gradually increases from left to right. Each bottom end of the push cylinder is fixedly installed with a push frame. Several hot pressure rollers are evenly rotated and installed on the inner wall of the push frame. The position of the hot pressure rollers is affected by the gradual extension length of the bottom end of the push cylinder to heat and press the flexible copper-clad laminate passing over the top of the protective frame. The pressure on the flexible copper-clad laminate further to the right of the hot pressure roller increases, thus achieving progressive hot roller pressing.

[0007] Furthermore, each feed screw has a transmission worm gear fixedly installed at its top end, and a transmission worm is meshed with the inner wall of the protective cover at the position corresponding to the transmission worm gear. A connecting shaft is fixedly installed between two adjacent transmission worms, and both ends of the connecting shaft are rotatably connected to the inner wall of the protective cover. A high-precision servo motor is installed on the outer wall of the protective cover, and the power shaft of the high-precision servo motor is fixedly connected to the corresponding connecting shaft through the protective cover.

[0008] Furthermore, the processing component includes a stand fixedly installed on the top left side of the equipment base, a guide limiting mechanism is installed on the left side of the stand, a flattening mechanism is installed on the right side of the stand, and two guide rollers are symmetrically arranged on the inner wall of the stand.

[0009] Furthermore, the guide limiting mechanism includes two mounting seats fixedly installed on the left side of the upright. The mounting seats are in an inverted "convex" shape. A bidirectional lead screw is rotatably installed on the bottom of the inner wall of the mounting seat. An adjusting handle is fixedly installed through the front end of the bidirectional lead screw through the mounting seat. Movable slides are screwed to the front and rear parts of the outer wall of the bidirectional lead screw.

[0010] Furthermore, a front guide shaft is rotatably mounted on both sides of the mounting base. A collar is slidably mounted on the front and rear parts of the outer wall of the front guide shaft. The bottom of the collar is fixedly connected to the corresponding movable slide, which is used to guide the movement path of the movable slide and limit and guide the flexible copper-clad laminate passing through the outer wall of the front guide shaft. An L-shaped limiter is fixedly mounted on the top of the collar.

[0011] Furthermore, the flattening mechanism includes two positioning frames fixedly installed on the side wall of the upright frame. The inner wall of the upper positioning frame is fixedly installed with an installation box. The inner wall of the installation box is slidably installed with a sliding table. Several positioning shafts are evenly installed on the top of the sliding table. The top of each positioning shaft slides through the installation box and extends to the outside.

[0012] Furthermore, an abutment spring is installed between the sliding table and the inner wall of the mounting box and sleeved on the outer wall of the corresponding positioning shaft. One end of the abutment spring is fixedly connected to the top wall of the mounting box, and the other end of the abutment spring is fixedly connected to the outer wall of the sliding table. A flattening frame is fixedly installed at the bottom of the sliding table. A scraper is fixedly installed on the left side of the flattening frame, and several flattening rollers are evenly rotated and installed on the inner wall of the right side of the flattening frame.

[0013] Furthermore, the correction assembly includes a correction frame fixedly installed on the top right side of the equipment base. Guide rails are inclinedly installed on the front and rear parts of the top wall of the correction frame. Several guide shafts are installed on the inner wall of each guide rail. Adjustment seats are slidably installed on the outer wall of each guide shaft located on the same side. Control push rods are fixedly installed on the outer wall of each correction frame. The movable end of each control push rod passes through the correction frame and is fixedly connected to the adjustment seat.

[0014] Furthermore, each of the adjustment seats has a vertical shaft fixedly installed on its top, and each of the vertical shafts has a steering seat rotatably installed on its outer wall. A correction roller is rotatably installed between the steering seats. An ultrasonic detector is installed on the rear of the top wall of the correction frame at the position corresponding to the path of the flexible copper-clad laminate, for detecting whether the flexible copper-clad laminate has shifted.

[0015] Furthermore, the pressure control assembly includes an output frame fixedly installed on the top right side of the equipment base. A conveying roller is rotatably installed on the bottom of the inner wall of the output frame. A precision push rod is fixedly installed on the top of the output frame. The movable end of the precision push rod passes through the output frame and is fixedly installed with a lifting frame. Positioning grooves are opened on the front and rear parts of the outer wall of the output frame. Positioning rods are fixedly installed on the inner wall of each positioning groove. Positioning blocks are slidably installed on the outer wall of each positioning rod. The top of the outer wall of each positioning block is fixedly connected to the lifting frame. A pressure roller is rotatably installed on the side adjacent to each positioning block.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This high-frequency PTFE flexible copper clad laminate tension correction lamination control equipment adopts a multi-roller progressive gradient hot pressing structure. By gradually increasing the pressing force along the conveyor belt direction in conjunction with continuous heating by the hot rollers, the adhesive is first discharged in an orderly manner under low pressure during the softening and melting stage, along with the air and solvent evaporation gases trapped between layers. Then, it is fully impregnated under medium pressure and compacted and shaped under high pressure. This completely breaks through the inherent limitations of existing single-pass lamination processes, such as incomplete low-pressure venting and high-pressure sealing and bubble formation. It can effectively eliminate random micro-bubble defects at the bonding interface between the polyimide film and the copper foil, forming a dense and uniform bonding interface. This effect can avoid the problems of local dielectric constant abrupt change and transmission impedance discontinuity caused by interface gaps, significantly reduce the reflection loss and distortion of high-frequency signals, and ensure the consistency of electrical performance of the finished copper clad laminate.

[0017] 2. This high-frequency PTFE flexible copper-clad laminate tension correction lamination control equipment uses a pre-positioned constant pressure flattening structure to perform a double leveling process on the incoming material, involving pre-scraping with a scraper and secondary compaction with a flattening roller. Combined with the full-process synergy of a wide-width limiting structure at the feed end, an online ultrasonic correction structure in the middle section, and a closed-loop tension control structure at the end, it can effectively suppress problems such as incoming material wrinkles, lateral deviation, and tension fluctuations. This avoids adverse phenomena such as interlayer relative slippage, uneven adhesive thickness distribution, and lamination alignment deviation caused by these issues. The thickness tolerance in the width direction and the uniformity of peel strength of the final product are significantly optimized, reducing the risk of delamination failure under bending and high-temperature conditions. The product's structural reliability and thermal dimensional stability are greatly improved.

[0018] 3. This high-frequency PTFE flexible copper clad laminate tension correction lamination control equipment is equipped with a symmetrical wide-width adjustment mechanism driven by a bidirectional screw at the feeding end, which can quickly adapt to the production needs of flexible copper clad laminates with different width specifications. Each set of hot press rollers in the lamination section is equipped with a worm gear servo feed transmission chain, which can adjust the pressing amount and pressing force. Combined with the independent temperature control capability of the hot rollers, the gradient pressing process parameters can be flexibly customized for different thickness substrates and different adhesive systems. It can cover the production of multiple types of high-frequency PTFE copper clad laminates. At the same time, each motion mechanism is equipped with a guide limit anti-deflection structure, which can ensure the accuracy and stability of the adjustment and operation process, and significantly reduce manual debugging errors and product changeover time.

[0019] 4. This high-frequency PTFE flexible copper clad laminate tension correction lamination control equipment adopts a roll-to-roll continuous operation mode. It is equipped with an automated closed-loop control system consisting of an ultrasonic detector, a pressure roller detection unit, and an external controller. It can realize real-time identification and automatic correction of abnormalities such as deviation and tension fluctuation, reducing the frequency of manual intervention and human operation errors. At the same time, thanks to the systematic reduction of defects such as interlayer bubbles, wrinkles, and misalignment, the product yield is improved simultaneously.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0023] Figure 1 This is a schematic diagram of the flexible copper-clad laminate and its overall external structure according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the flexible copper-clad laminate and its overall external structure according to the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the external structure of the processing component of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the external structure of the processing component of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the external structure of the guide and limiting mechanism of the present invention; Figure 6 This is a diagram showing the assembly of the support frame and guide rollers of the present invention; Figure 7 This is an exploded sectional view of the internal structure of the flattening mechanism of the present invention; Figure 8 This is a schematic diagram of the external structure of the flattening mechanism of the present invention; Figure 9 This is a schematic diagram of the external structure of the laminated assembly of the present invention; Figure 10 The internal structure of the laminated component of this invention exploded. Figure 1 ; Figure 11 The internal structure of the laminated component of this invention exploded. Figure 2 ; Figure 12 This is a schematic diagram of the external structure of the correction component of the present invention. Figure 1 ; Figure 13 This is a schematic diagram of the external structure of the correction component of the present invention. Figure 2; Figure 14 This is a schematic diagram of the external structure of the correction component of the present invention. Figure 3 ; Figure 15 This is a schematic diagram of the external structure of the pressure control component of the present invention; Figure 16 This is an exploded view of the internal structure of the pressure control component of the present invention.

[0024] Illustrations: 1. Equipment base; 2. Processing assembly; 21. Stand; 22. Guide and limiting mechanism; 221. Mounting base; 222. Two-way lead screw; 223. Front guide shaft; 224. Moving slide; 225. Collar; 226. L-shaped limiter; 23. Flattening mechanism; 231. Positioning frame; 232. Mounting box; 233. Positioning shaft; 234. Abutment spring; 235. Sliding table; 236. Flattening frame; 237. Flattening roller; 238. Scraper; 24. Guide roller; 3. Lamination assembly; 31. Pressing table; 32. Protective frame; 33. Mounting frame; 34. Protective cover; 35. Guide groove; 3 6. Propeller cylinder; 37. Guide protrusion; 38. Propeller frame; 39. Hot press roller; 310. Feed screw; 311. Transmission worm gear; 312. Transmission worm; 313. Connecting shaft; 314. High-precision servo motor; 4. Correction assembly; 41. Correction frame; 42. Guide rail; 43. Guide shaft; 44. Control push rod; 45. Adjustment seat; 46. Vertical shaft; 47. Steering seat; 48. Correction roller; 49. Ultrasonic detector; 5. Pressure control assembly; 51. Positioning groove; 52. Output frame; 53. Precision push rod; 54. Positioning rod; 55. Positioning block; 56. Conveyor roller; 57. Pressure roller; 58. Lifting frame. Detailed Implementation

[0025] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0026] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0027] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Please see Figures 1-16 This invention provides a high-frequency PTFE flexible copper clad laminate tension correction lamination control device, including a device base 1, characterized in that: a processing component 2, a lamination component 3, a correction component 4 and a pressure control component 5 are arranged and installed from left to right on the top of the device base 1; The lamination assembly 3 includes a pressing table 31 fixedly installed on the top of the equipment base 1. A protective frame 32 is installed on the top of the pressing table 31. The protective frame 32 has openings at both ends for the flexible copper-clad laminate to enter and exit. A mounting frame 33 is provided on the top of the protective frame 32. A protective cover 34 is installed on the top of the mounting frame 33. Several guide grooves 35 are evenly opened on the top of the protective frame 32. A push cylinder 36 is slidably installed on the inner wall of each guide groove 35. Guide protrusions 37 are fixedly installed on the front and rear parts of the outer wall of the push cylinder 36 to guide and limit the push cylinder 36 to prevent rotation when it is raised and lowered along the inner wall of the guide groove 35. A screw groove is opened on the inner wall of each push cylinder 36. A feed screw 310 is rotatably installed on the inner wall of the mounting frame 33 at the position corresponding to the push cylinder 36. The outer wall of the feed screw 310 is threadedly connected to the screw groove of the inner wall of the corresponding push cylinder 36. The bottom extension length of the push cylinder 36 gradually increases from left to right. Each bottom end of the push cylinder 36 is fixedly installed with a push frame 38. Several hot pressure rollers 39 are evenly rotated and installed on the inner wall of the push frame 38. The position of the hot pressure rollers 39 is affected by the gradual extension length of the bottom end of the push cylinder 36 to heat-press the flexible copper-clad laminate passing over the top of the protective frame 32. The pressure on the flexible copper-clad laminate further to the right of the hot pressure roller 39 increases, thus achieving progressive hot roller pressing.

[0029] In this embodiment, the progressive arrangement of the bottom extension length of the push cylinder 36 allows multiple sets of hot press rollers 39 to form a progressively increasing pressing pressure field along the belt conveyor direction. Combined with the continuous heating effect of the hot press rollers 39, the adhesive in the multi-layer composite structure gradually softens and melts. The air and solvent volatile gases trapped between the layers can escape in an orderly manner along the reverse direction of the belt conveyor during the low-pressure stage. After being fully impregnated during the medium-pressure stage and compacted and shaped during the high-pressure stage, the random microbubbles at the interface between the polyimide film and the copper foil are eliminated, the density of the bonding interface is improved, and the problems of high-frequency dielectric constant abrupt change and signal distortion caused by interface gaps are avoided.

[0030] Specifically, a transmission worm gear 311 is fixedly installed at the top of each feed screw 310. A transmission worm 312 is meshed with the inner wall of the protective cover 34 at the position corresponding to the transmission worm gear 311. A connecting shaft 313 is fixedly installed between two adjacent transmission worms 312. Both ends of the connecting shaft 313 are rotatably connected to the inner wall of the protective cover 34. A high-precision servo motor 314 is installed on the outer wall of the protective cover 34. The power shaft of the high-precision servo motor 314 is fixedly connected to the corresponding connecting shaft 313 through the protective cover 34.

[0031] In this embodiment, a worm gear meshing transmission structure is adopted, which has both speed reduction and torque increase and reverse self-locking characteristics. It can stably maintain the feed position of the feed screw 310 and avoid springback and pressure loss during the pressing process. Multiple sets of transmission worms 312 are connected in series coaxially through connecting shaft 313 and driven by a single high-precision servo motor 314. This can ensure that all feed screws 310 rotate synchronously and at the same speed, so that the feed amount of each set of propulsion cylinders 36 is accurate and consistent, and the gradient pressure distribution is stable and controllable. With the circumferential limiting structure of the guide protrusion 37 and the guide groove 35, circumferential deflection during the lifting and lowering of the push cylinder 36 can be completely avoided, ensuring that the pressing pressure of the hot press roller 39 is uniform across the entire width, thus improving the consistency of the finished product thickness.

[0032] Specifically, the processing component 2 includes a stand 21 fixedly installed on the top left side of the equipment base 1. A guide limiting mechanism 22 is installed on the left side of the stand 21, a flattening mechanism 23 is installed on the right side of the stand 21, and two guide rollers 24 are symmetrically arranged on the inner wall of the stand 21.

[0033] In this implementation scheme, the processing component 2 adopts a three-stage feeding layout of "pre-positioning limit, mid-section reversal, and end flattening". The guide limiting mechanism 22 first performs lateral centering constraint on the incoming material. After the guide roller 24 smoothly reverses the direction, the flattening mechanism 23 completes the surface flattening treatment. This can systematically correct incoming material defects such as material wrinkles, lateral skew, and uneven tension, providing qualified substrates with regular posture and flat surface for subsequent lamination processes. This reduces problems such as uneven adhesive layer thickness and residual venting blind spots caused by poor incoming material condition from the source, laying the foundation for improving the lamination venting effect.

[0034] Specifically, the guide limiting mechanism 22 includes two mounting seats 221 fixedly installed on the left side of the upright 21. The mounting seats 221 are in an inverted "convex" shape. A bidirectional lead screw 222 is rotatably installed on the bottom of the inner wall of the mounting seat 221. An adjustment handle is fixedly installed through the mounting seat 221 at the front end of the bidirectional lead screw 222. A movable slide block 224 is screwed onto the front and rear parts of the outer wall of the bidirectional lead screw 222.

[0035] In this implementation scheme, the bidirectional lead screw 222 adopts a symmetrical arrangement of positive and negative threads. When the adjustment handle is rotated, it can drive the two sets of moving slides 224 to make linear movements in opposite directions or in opposite directions at the same time, ensuring that the L-shaped limiters 226 on both sides are always symmetrically adjusted with the central axis of the equipment as the reference. The centering accuracy of the limit channel is high, and it can quickly adapt to the production needs of flexible copper clad laminates with different width specifications. At the same time, this structure can initially constrain the lateral movement of the roll material from the feeding end, reduce the adjustment load of the subsequent correction component 4, and avoid the problem of uneven lamination and adhesive distribution caused by large deviation of the roll material, which would exacerbate the problem of local bubble residue.

[0036] Specifically, a front guide shaft 223 is rotatably mounted on both sides of the mounting base 221. A collar 225 is slidably mounted on the front and rear parts of the outer wall of the front guide shaft 223. The bottom of the collar 225 is fixedly connected to the corresponding movable slide 224 to guide the movement path of the movable slide 224 and limit and guide the flexible copper-clad laminate passing through the outer wall of the front guide shaft 223. An L-shaped limiter 226 is fixedly mounted on the top of the collar 225.

[0037] In this embodiment, the collar 225 is sleeved on the outer wall of the front guide shaft 223 and connected to the movable slide 224, which can form a double guide constraint on the movement path of the movable slide 224, effectively avoiding the deflection and jamming problem that is easy to occur in the screw drive, and ensuring that the L-shaped limiter 226 is stable and smooth during adjustment. The cross-sectional structure of the L-shaped limiter 226 can simultaneously limit the lateral edge and upper and lower surfaces of the roll material. During the conveyor belt operation, it can suppress edge warping and vertical jumping of the roll material, allowing the roll material to enter the subsequent flattening process in a flat posture to ensure the uniformity of the flattening effect.

[0038] Specifically, the flattening mechanism 23 includes two positioning frames 231 fixedly installed on the side wall of the upright frame 21. The inner wall of the upper positioning frame 231 is fixedly installed with a mounting box 232. The inner wall of the mounting box 232 is slidably installed with a sliding table 235. Several positioning shafts 233 are evenly installed on the top of the sliding table 235. The top of the positioning shafts 233 slides through the mounting box 232 and extends to the outside.

[0039] In this embodiment, the positioning shaft 233 passes through the top wall of the mounting box 232 in the vertical direction and is fixedly connected to the sliding table 235. This can constrain the motion freedom of the sliding table 235, retaining only the vertical lifting displacement and completely restricting the horizontal movement and deflection. This ensures that the flattening frame 236 is always perpendicular to the direction of the roll material travel, and that the force of the scraper 238 and the flattening roller 237 is evenly distributed along the width direction, avoiding the problem of insufficient flattening on one side and slanting wrinkles in the roll material caused by the offset of the mechanism.

[0040] Specifically, an abutment spring 234 is installed between the sliding table 235 and the inner wall of the mounting box 232 and sleeved on the outer wall of the corresponding positioning shaft 233. One end of the abutment spring 234 is fixedly connected to the inner top wall of the mounting box 232, and the other end of the abutment spring 234 is fixedly connected to the outer wall of the sliding table 235. A flattening frame 236 is fixedly installed at the bottom of the sliding table 235. A scraper 238 is fixedly installed on the left side of the flattening frame 236. Several flattening rollers 237 are evenly rotated and installed on the inner wall of the right side of the flattening frame 236.

[0041] In this embodiment, the abutment spring 234 is in a pre-compressed state, which can provide a continuous and constant downward pressure to the sliding table 235. It has elastic adaptive capability, which can accommodate small thickness fluctuations on the surface of the roll material and avoid the local crushing or insufficient pressure problems that are prone to occur in rigid pressing structures. The dual leveling combination of front scraper 238 and rear flattening roller 237 can eliminate large-size wrinkles, edge warping and fine surface undulations in turn, and thoroughly level the surface of the incoming material. This prevents wrinkles from being carried into the lamination process and forming gaps between layers and dead corners for venting, and reduces the generation of microbubbles from the material inlet.

[0042] Specifically, the correction assembly 4 includes a correction frame 41 fixedly installed on the top right side of the equipment base 1. Guide rails 42 are inclinedly installed on the front and rear parts of the top wall of the correction frame 41. Several guide shafts 43 are installed on the inner wall of the guide rails 42. Adjustment seats 45 are slidably installed on the outer wall of the guide shafts 43 on the same side. Control push rods 44 are fixedly installed on the outer wall of the correction frame 41. The movable end of the control push rod 44 passes through the correction frame 41 and is fixedly connected to the adjustment seat 45.

[0043] In this embodiment, the sliding guide pair formed by the guide rail 42 and the guide shaft 43 has the characteristics of low motion resistance and high guiding accuracy, which can ensure that the displacement process of the adjusting seat 45 is smooth and without jamming. The control push rod 44 adopts an electric precision drive, which has a fast response speed and stable thrust output. It can output the corresponding displacement in real time according to the offset signal collected by the ultrasonic detector 49, so as to realize the fast and accurate execution of the correction action. It is suitable for continuous belt running conditions to correct the lateral offset of the roll material in time and avoid the accumulation of offset causing defects such as interlayer misalignment and uneven winding end face.

[0044] Specifically, each of the adjustment seats 45 has a vertical shaft 46 fixedly installed on its top, and each of the vertical shafts 46 has a steering seat 47 rotatably installed on its outer wall. A correction roller 48 is rotatably installed between the steering seats 47. An ultrasonic detector 49 is installed on the rear of the top wall of the correction frame 41 at the position corresponding to the path of the flexible copper-clad laminate, for detecting whether the flexible copper-clad laminate has shifted.

[0045] In this embodiment, the steering seat 47 and the vertical shaft 46 form a rotating hinge structure, which allows the correction roller 48 to adaptively adjust the deflection angle during the adjustment process. The correction action is smooth and impact-free and will not cause tensile deformation or edge damage to the flexible copper-clad laminate. The ultrasonic detector 49 uses a non-contact detection method that will not damage the surface of the roll material. It can collect the edge position data of the roll material in real time and feed it back to the controller to form a closed-loop correction control. This controls the lateral deviation of the roll material within the accuracy range, ensures the alignment accuracy of the multi-layer material stacking, and avoids the problem of uneven adhesive layer and air bubble residue caused by the belt deviation.

[0046] Specifically, the pressure control component 5 includes an output frame 52 fixedly installed on the top right side of the equipment base 1. A conveying roller 56 is rotatably installed on the bottom of the inner wall of the output frame 52. A precision push rod 53 is fixedly installed on the top of the output frame 52. The movable end of the precision push rod 53 passes through the output frame 52 and is fixedly installed with a lifting frame 58. Positioning grooves 51 are opened on the front and rear parts of the outer wall of the output frame 52. Positioning rods 54 are fixedly installed on the inner wall of the positioning grooves 51. Positioning blocks 55 are slidably installed on the outer wall of the positioning rods 54. The top of the outer wall of the positioning blocks 55 is fixedly connected to the lifting frame 58. A pressure roller 57 is rotatably installed on the side adjacent to the positioning block 55.

[0047] In this implementation scheme, the precision push rod 53 can precisely drive the lifting frame 58 to perform vertical lifting motion. By changing the relative distance between the pressure roller 57 and the conveying roller 56, the wrap angle and tension of the roll material can be dynamically adjusted. The sliding fit structure between the positioning rod 54 and the positioning block 55 can form a double-sided guiding constraint on the lifting frame 58, ensuring that the pressure roller 57 is horizontally free from deviation and has uniform tension in the width direction during the lifting process. The pressure roller 57 has a built-in detection unit that can collect tension data in real time and feed it back to the controller, forming a closed-loop tension control to maintain a stable and constant tension throughout the entire conveying line. This avoids problems such as relative slippage between layers and uneven adhesive layer thickness caused by tension fluctuations. At the same time, it prevents the air-vented interlayer structure from being re-entered by air due to sudden tension changes, thus forming secondary air bubbles and ensuring the quality stability of the laminated product.

[0048] Working principle of high-frequency PTFE flexible copper clad laminate processing device: The high-precision servo motor 314, control push rod 44, ultrasonic detector 49, and precision push rod 53 of this device are all electrically connected to the external power supply through a standardized wire layout, providing a stable and controllable power source for the entire process of the device operation. The models of each electrical control component can be flexibly selected from the existing standard parts system according to the actual working conditions. Their signal input terminals are all connected to the signal output terminals of the external controller, and the signal feedback terminals are connected to the signal input terminals of the controller, which can realize the real-time issuance of control commands and synchronous feedback of execution status. This device employs a collaborative structural design encompassing pre-leveling pretreatment, multi-gradient progressive hot pressing, online dynamic correction, and closed-loop tension control. It systematically addresses issues from multiple dimensions, including incoming material condition, lamination mechanism, and conveyor belt stability. The following is a detailed explanation of its working principle and technical effects: Pre-processing incoming material leveling and width limiting: Equipment base 1 provides bottom installation support for the entire device, and is fixedly installed at the predetermined work position on the production line to ensure the structural rigidity and stability of the whole machine operation. The processing component 2 is integrated on the upright frame 21, which undertakes the function of width adaptation and material leveling at the feeding end, and provides flat and centered qualified incoming materials for the subsequent lamination process. Wide-width adaptive limit: Before operation, according to the width of the high-frequency PTFE flexible copper-clad laminate to be processed, rotate the adjustment handle to drive the bidirectional lead screw 222 to rotate synchronously between the two mounting seats 221. Through the transmission action of the lead screw thread pair, drive the two sets of moving slides 224 to make linear displacements in opposite directions or opposite directions along the axial direction of the bidirectional lead screw 222. The moving slides 224 are sleeved on the outer wall of the front guide shaft 223 through the collar 225, which drives the L-shaped limiters 226 to slide synchronously along the front guide shaft 223. The front guide shaft 223 can radially constrain the movement path of the moving slides 224 to prevent deflection and jamming during movement, and ensure that the two sets of L-shaped limiters 226 are always symmetrically distributed on both sides of the central axis of the equipment. After the inner spacing of the two sets of L-shaped limiters 226 is adjusted to precisely match the width of the copper-clad laminate, a guide channel that limits the conveyor belt range can be constructed, constraining the flexible copper-clad laminate to be conveyed smoothly along the central axis of the equipment. This initially suppresses the lateral deviation trend from the feed end, avoiding the problem of uneven lamination load and uneven adhesive layer thickness distribution caused by material skew, which in turn aggravates the problem of local bubble residue.

[0049] Constant pressure double flattening: The flexible copper-clad laminate enters the interior of the upright frame 21 through the channel formed by the front guide shaft 223 and the L-shaped limiter 226. It first passes around the guide roller 24 to complete the reversal, and then extends upward to the top surface of the lower positioning frame 231. It then passes through the double flattening action of the scraper 238 and the flattening roller 237 in sequence. The abutment spring 234 inside the mounting box 232 is in a pre-compressed state, continuously applying a constant elastic thrust downwards, pushing the sliding table 235 to move vertically downwards along the positioning shaft 233. Then, through the flattening frame 236, the flattening roller 237 and the scraper 238 are driven to press down synchronously, so that the two are always in constant pressure against the flexible copper-clad laminate surface on the top surface of the positioning frame 231. The positioning shaft 233 is used to axially limit the movement path of the sliding table 235 and the abutment spring 234, ensuring that the pressing action is vertically stable and without lateral deviation. The unique combination design of "scraper pre-scraping + flattening roller secondary compaction" is adopted: scraper 238 first scrapes away large-sized wrinkles and edge warping on the material surface, and flattening roller 237 then further eliminates fine undulations through continuous roller pressing. Combined with the constant force output characteristics of the abutment spring 234, it can avoid pressure fluctuations and local crushing problems that are prone to occur in rigid pressing structures. This ensures that the copper-clad laminate has excellent surface flatness before entering the lamination process, eliminates local gaps and venting blind spots between layers caused by material wrinkles, and reduces the causes of microbubble formation from the source.

[0050] Progressive gradient hot pressing exhaust: The pre-treated flexible copper-clad laminate continues to be conveyed to the right and enters the lamination assembly 3 to complete the hot pressing composite of multi-layer materials and the deep exhaust between layers. The lamination assembly 3 is mainly composed of a pressing table 31, a protective frame 32, and multiple sets of independently adjustable hot pressing rollers 39, and adopts a multi-roller progressive gradient hot pressing structure. The flexible copper-clad laminate enters through the feed inlet of the protective frame 32 and is horizontally conveyed along the top surface of the pressing table 31. It passes through the bottom of multiple parallel hot press rollers 39 to complete the graded hot press treatment. The process parameters can be preset according to the total thickness of the copper-clad laminate, the glass transition temperature of the adhesive, and the rheological properties. The high-precision servo motor 314 is started, which drives the transmission worm gear 312 to rotate at a low speed and in the same direction within the protective cover 34 through the connecting shaft 313. The transmission worm gear 312 meshes with the transmission worm wheel 311 to transmit the horizontal rotation. For vertical deceleration and torque increase output, the feed screw 310 is driven to rotate smoothly inside the mounting frame 33. The feed screw 310 is threaded with the inner wall of the push cylinder 36. Under the continuous rotation of the screw, the push cylinder 36 is pushed to rise and fall vertically along the guide groove 35 at the top of the protective frame 32. The guide protrusion 37 on the outer wall of the push cylinder 36 is fitted into the guide groove 35, which can limit the circumferential rotation of the push cylinder 36, so that it always maintains high-precision vertical lifting and lowering, and eliminates uneven pressure in the width direction caused by the skew of the pressing angle. The bottom extension length of all the push cylinders 36 is gradually extended from left to right, which correspondingly drives the pressing height of each set of push frames 38 and hot press rollers 39 to decrease step by step, so that the hot pressing pressure on the copper clad laminate increases step by step from left to right, forming a continuous gradient pressing field of low pressure pre-pressing and venting, medium pressure flow wetting, and high pressure compaction and shaping. Its dynamic operation process is as follows: When the copper-clad laminate enters the area of ​​the first hot press roller 39, it first bears a low hot press pressure. At the set temperature, the adhesive gradually softens and melts, and has flow properties. The air and trace amounts of solvent volatile gas trapped between the layers escape orderly in the opposite direction of the conveyor belt under the action of low pressure. It will not be sealed inside the adhesive layer due to instantaneous high pressure to form closed microbubbles. As the copper-clad laminate is conveyed to the right, the pressure of the hot press roller 39 increases step by step, the adhesive is gradually compacted, and the remaining trace amounts of gas are squeezed out. At the same time, the molten adhesive and the copper foil and polyimide film are fully impregnated and combined to form a dense and uniform bonding interface. This progressive pressing mode matches the thermosetting rheological properties of the adhesive, which can significantly reduce the number and size of microbubbles in the adhesive layer, improve the tightness and uniformity of the interlayer bonding interface, and fundamentally avoid the problems of high-frequency dielectric constant abrupt change, transmission impedance discontinuity and signal distortion caused by interfacial gaps. Meanwhile, each set of hot press rollers 39 is equipped with a servo feed transmission chain, which can adjust the pressing amount and pressing force to adapt to copper clad laminate products with different thicknesses and different adhesive systems, making the process adaptability stronger. The precise matching structure of the guide groove 35 and the guide protrusion 37 can ensure that the hot press rollers 39 press down consistently across the entire width, avoiding uneven thickness and venting differences in the width direction caused by bias pressure.

[0051] Online dynamic alignment and correction: The flexible copper-clad laminate that has completed hot-pressing composite is output from the discharge port of the protective frame 32 and enters the correction component 4 for online lateral deviation correction. The correction component 4 is integrated on the top of the correction frame 41 and mainly consists of guide rail 42, guide shaft 43, control push rod 44, adjustment seat 45, vertical shaft 46, steering seat 47, correction roller 48 and ultrasonic detector 49, etc., to further ensure the consistency of finished product size and performance. The ultrasonic detector 49 detects the edge position coordinates of the flexible copper-clad laminate in real time and feeds back the position deviation signal to the external controller in real time. If the copper-clad laminate is detected to have a lateral offset, the controller immediately outputs a correction command and activates the control push rod 44 on the side wall of the guide rail 42 to push the adjustment seat 45 to slide along the outer wall of the guide shaft 43. The adjustment seat 45 is rotatably connected to the steering seat 47 through the vertical shaft 46. The horizontal displacement of the adjustment seat 45 can drive the steering seat 47 and the correction roller 48 to deflect synchronously, so that the axis of the correction roller 48 forms a fine adjustment angle with the direction of the belt. Through the friction between the roller surface and the material, the copper-clad laminate is driven to move towards the center position to complete the dynamic correction without impact. During the correction process, the steering seat 47 can rotate freely around the vertical shaft 46 to ensure a smooth transition of the correction action and not cause tensile deformation or edge damage to the copper-clad laminate. This online correction structure can control the lateral deviation of the copper-clad laminate within a high-precision range, ensuring the alignment accuracy of multi-layer material stacking, avoiding interlayer relative slippage and uneven adhesive thickness distribution caused by tape skew, reducing the causes of local air bubble residue and uneven bonding from the perspective of tape stability, while ensuring neat end faces in subsequent winding processes, avoiding winding wrinkles and material waste.

[0052] Closed-loop tension stabilization control: After correction, the flexible copper-clad laminate is redirected by the conveyor roller 56 and output to the winding process after passing through the pressure roller 57. The pressure roller 57 has a built-in pressure detection unit, which can monitor the conveying tension of the copper-clad laminate and the contact pressure of the roller surface in real time, and feed the pressure data back to the controller in real time. When the conveying tension fluctuates, the controller activates the precision push rod 53 at the top of the output frame 52 to drive the lifting frame 58 to drive the pressure roller 57 to make vertical lifting and lowering adjustment. The positioning blocks 55 on both sides of the lifting frame 58 are embedded in the positioning groove 51 on the inner side of the output frame 52 and slide along the outer wall of the positioning rod 54 to ensure that the lifting frame 58 moves smoothly without swaying, and realizes fine adjustment of pressure and tension. By adjusting the height of the pressure roller 57, the wrap angle and tension of the copper-clad laminate on the roller surface can be dynamically changed to achieve closed-loop stable control of the conveying tension. This structure can stably control the tension of the entire conveyor within a set range, avoiding excessive tension that causes creep and stretching of the PTFE substrate and plastic deformation of the copper foil, or insufficient tension that causes wrinkling of the material and misalignment between layers. Stable and constant tension can ensure that the adhesive layer thickness is uniform and there is no relative slippage between layers, further consolidating the lamination degassing effect, while preventing air from being drawn back into the degassed areas due to sudden tension changes, thus forming secondary bubbles.

[0053] In summary, this device provides a flat and centered material foundation for the lamination process through the pre-leveling and wide-width limiting of the processing component 2. Through the progressive gradient hot pressing structure of the lamination component 3, it breaks through the venting bottleneck of single-pass pressing from the perspective of process principle, fundamentally reducing the micro-bubble defects in the adhesive layer. Through the coordinated cooperation of the correction component 4 and the pressure control component 5, it ensures stable tape feeding, constant tension, and accurate alignment throughout the process, avoiding the negative impact of tape feeding fluctuations on the lamination quality. It can improve the peel strength, structural reliability, and electrical performance consistency of high-frequency PTFE flexible copper-clad laminates.

[0054] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-frequency PTFE flexible copper clad laminate tension correction lamination control device, comprising a device base (1), characterized in that: The equipment base (1) is equipped with a processing component (2), a lamination component (3), a correction component (4), and a pressure control component (5) arranged from left to right on the top. The lamination assembly (3) includes a pressing platform (31) fixedly installed on the top of the equipment base (1). A protective frame (32) is installed on the top of the pressing platform (31). The protective frame (32) has openings at both ends for the flexible copper-clad laminate to enter and exit. A mounting frame (33) is provided on the top of the protective frame (32). A protective cover (34) is installed on the top of the mounting frame (33). Several guide grooves (35) are evenly opened on the top of the protective frame (32). The inner walls of the guide grooves (35) are all slidably installed. There is a propulsion cylinder (36), and guide protrusions (37) are fixedly installed on the front and rear parts of the outer wall of the propulsion cylinder (36) to guide and limit the propulsion cylinder (36) to prevent rotation when it is raised and lowered along the inner wall of the guide groove (35). The inner wall of the propulsion cylinder (36) is provided with threaded grooves. The inner wall of the mounting bracket (33) and the corresponding position of the propulsion cylinder (36) are rotatably installed with feed screws (310). The outer wall of the feed screws (310) is threadedly connected to the corresponding threaded grooves of the inner wall of the propulsion cylinder (36). The bottom extension length of the push cylinder (36) gradually increases from left to right. The bottom end of the push cylinder (36) is fixedly installed with a push frame (38). Several hot pressure rollers (39) are evenly rotated and installed on the inner wall of the push frame (38). The position of the hot pressure rollers (39) is affected by the bottom extension length of the push cylinder (36) to heat-press the flexible copper-clad laminate passing over the top of the protective frame (32). The pressure on the flexible copper-clad laminate further to the right of the hot pressure roller (39) increases, thus realizing progressive hot roller pressing.

2. The high-frequency PTFE flexible copper clad laminate tension correction lamination control equipment according to claim 1, characterized in that: The top of each feed screw (310) is fixedly mounted with a transmission worm gear (311). The inner wall of the protective cover (34) and the position corresponding to the transmission worm gear (311) are all meshed with a transmission worm (312). A connecting shaft (313) is fixedly mounted between two adjacent transmission worms (312). Both ends of the connecting shaft (313) are rotatably connected to the inner wall of the protective cover (34). A high-precision servo motor (314) is mounted on the outer wall of the protective cover (34). The power shaft of the high-precision servo motor (314) is fixedly connected to the corresponding connecting shaft (313) through the protective cover (34).

3. The high-frequency PTFE flexible copper clad laminate tension correction lamination control device according to claim 1, characterized in that: The processing component (2) includes a stand (21) fixedly installed on the top left side of the equipment base (1). A guide limiting mechanism (22) is installed on the left side of the stand (21), and a flattening mechanism (23) is installed on the right side of the stand (21). Two guide rollers (24) are symmetrically arranged on the inner wall of the stand (21).

4. The high-frequency PTFE flexible copper clad laminate tension correction lamination control equipment according to claim 3, characterized in that: The guide limiting mechanism (22) includes two mounting seats (221) fixedly installed on the left side of the upright (21). The mounting seats (221) are in an inverted "convex" shape. A bidirectional screw (222) is rotatably installed on the bottom of the inner wall of the mounting seat (221). An adjustment handle is fixedly installed through the mounting seat (221) at the front end of the bidirectional screw (222). A movable slide (224) is screwed onto the front and rear parts of the outer wall of the bidirectional screw (222).

5. The high-frequency PTFE flexible copper clad laminate tension correction lamination control equipment according to claim 4, characterized in that: A front guide shaft (223) is rotatably mounted on both sides of the mounting base (221). A collar (225) is slidably mounted on the front and rear parts of the outer wall of the front guide shaft (223). The bottom of the collar (225) is fixedly connected to the corresponding movable slide (224) to guide the movement path of the movable slide (224) and limit and guide the flexible copper-clad laminate passing through the outer wall of the front guide shaft (223). An L-shaped limiter (226) is fixedly mounted on the top of the collar (225).

6. The high-frequency PTFE flexible copper clad laminate tension correction lamination control device according to claim 3, characterized in that: The flattening mechanism (23) includes two positioning frames (231) fixedly installed on the side wall of the upright frame (21). The inner wall of the upper positioning frame (231) is fixedly installed with a mounting box (232). The inner wall of the mounting box (232) is slidably installed with a sliding table (235). Several positioning shafts (233) are evenly installed on the top of the sliding table (235). The top of the positioning shafts (233) slides through the mounting box (232) and extends to the outside.

7. The high-frequency PTFE flexible copper clad laminate tension correction lamination control equipment according to claim 6, characterized in that: An abutment spring (234) is installed between the inner wall of the sliding table (235) and the inner wall of the mounting box (232) and sleeved on the outer wall of the corresponding positioning shaft (233). One end of the abutment spring (234) is fixedly connected to the inner top wall of the mounting box (232), and the other end of the abutment spring (234) is fixedly connected to the outer wall of the sliding table (235). A flattening frame (236) is fixedly installed at the bottom of the sliding table (235). A scraper (238) is fixedly installed on the left side of the flattening frame (236), and several flattening rollers (237) are evenly rotated and installed on the inner wall of the right side of the flattening frame (236).

8. The high-frequency PTFE flexible copper clad laminate tension correction lamination control equipment according to claim 1, characterized in that: The correction assembly (4) includes a correction frame (41) fixedly installed on the top right side of the equipment base (1). The front and rear sides of the top wall of the correction frame (41) are inclinedly installed with guide rails (42). The inner wall of the guide rails (42) is equipped with several guide shafts (43). The outer wall of the guide shafts (43) located on the same side is slidably installed with adjustment seats (45). The outer wall of the correction frame (41) is fixedly installed with control push rods (44). The movable end of the control push rods (44) passes through the correction frame (41) and is fixedly connected to the adjustment seats (45).

9. The high-frequency PTFE flexible copper clad laminate tension correction lamination control device according to claim 8, characterized in that: Each of the adjustment seats (45) has a vertical shaft (46) fixedly installed on its top. Each of the vertical shafts (46) has a steering seat (47) rotatably installed on its outer wall. Each of the steering seats (47) has a correction roller (48) rotatably installed between them. Each of the correction frames (41) has an ultrasonic detector (49) installed on its rear top wall at the position corresponding to the path of the flexible copper-clad laminate, for detecting whether the flexible copper-clad laminate has deviated.

10. The high-frequency PTFE flexible copper clad laminate tension correction lamination control device according to claim 1, characterized in that: The pressure control component (5) includes an output frame (52) fixedly installed on the top right side of the equipment base (1). A conveyor roller (56) is rotatably installed on the bottom of the inner wall of the output frame (52). A precision push rod (53) is fixedly installed on the top of the output frame (52). The movable end of the precision push rod (53) passes through the output frame (52) and is fixedly installed with a lifting frame (58). The front and rear parts of the outer wall of the output frame (52) are provided with positioning grooves (51). A positioning rod (54) is fixedly installed on the inner wall of the positioning groove (51). A positioning block (55) is slidably installed on the outer wall of the positioning rod (54). The top of the outer wall of the positioning block (55) is fixedly connected to the lifting frame (58). A pressure roller (57) is rotatably installed on the side adjacent to the positioning block (55).

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