A photosensitive dry film laminating pressure adjusting device and method thereof

Abstract

The present application relates to the technical field of film coating, in particular to a photosensitive dry film coating pressure adjusting device and method thereof. The photosensitive dry film coating pressure adjusting device comprises a casing, the casing is two parallel support frames, a pressure bearing roller is rotatably installed between the two casings, the pressure bearing roller is located at the lower part of the feeding side of the casing, a conveying roller is provided with no less than two and is horizontally and spacedly arranged between the casings, further comprising a guide frame fixedly connected to the casing, and a sliding frame slidably connected to the feeding side of the casing through the guide frame. The present application automatically tightens the photosensitive dry film at the initial stage of film coating through the downward pressing mechanism of the electric push rod and the tension spring, the downward pressing roller is elastically pressed against the film material under the action of the tension spring, constant tension control is realized, the waste of the first section of film material caused by manual tension adjustment is avoided, and the quality of the photosensitive dry film coating is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of film coating, in particular to a photosensitive dry film coating pressure adjusting device and method thereof. BACKGROUND

[0002] As an important high polymer material, photosensitive dry film is widely used in the manufacturing process of printed circuit board (PCB), mainly for pattern transfer and protection against etching or electroplating. Its working principle is to initiate polymerization reaction through ultraviolet irradiation, so that the dry film is solidified and firmly attached to the substrate surface. In actual production, the film coating process is one of the key links, which is usually completed by mechanical roller coating equipment, using the pressure between steel roller and silica gel roller to uniformly paste the dry film on the substrate. Such equipment is widely used due to its simple structure, low cost and easy operation.

[0003] However, the existing mechanical roller coating technology still has some defects. First, during the initial stage of replacing new dry film roll for coating, the dry film needs to be manually threaded into the roller system, at this time the dry film is in a relaxed state. The traditional equipment only adjusts the gap between the rollers to control the pressure, which cannot effectively adjust the tension of the dry film during the threading process, resulting in the need to rely on subsequent guide rollers to pull tight. The excess dry film pulled out during this process is often cut and discarded, causing material waste. Second, the roller system usually runs with fixed parameters, lacking the ability to adapt to the change of dry film material viscoelasticity under changes of environmental temperature and humidity, leading to uneven pasting, air bubbles or wrinkles under different working conditions. Therefore, we propose a photosensitive dry film coating pressure adjusting device and method to overcome the above defects. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the present application provides a photosensitive dry film coating pressure adjusting device and method.

[0005] The utility model provides a kind of photosensitive dry film covering film pressure regulating device, including: cabinet, the cabinet is two support frames of parallel arrangement;Pressure roller, rotation is installed between two the cabinet, the pressure roller is located in the lower part of the cabinet feed side;Conveying roller, be equipped with not less than two and interval horizontally between the cabinet;Further include: guide frame, fixedly connected in the cabinet;Sliding frame, sliding connection is in the cabinet feed side by guide frame, two the sliding frame between fixedly connected with mounting shaft, the cabinet is equipped with the guide groove of adaptation mounting shaft;Covering film roller, rotation is installed on mounting shaft, the wheel hub motor for driving covering film roller is equipped on the mounting shaft;Hydraulic cylinder, fixedly installed on the top of the cabinet, the piston rod of the hydraulic cylinder and corresponding sliding frame are connected;Dry film roller, setting is in the cabinet away from covering film roller side, photosensitive dry film is wound on the dry film roller;Lowering mechanism is equipped between the cabinet of covering film roller and dry film roller, and the lowering mechanism is used for compacting photosensitive dry film wound between covering film roller and dry film roller;The lowering mechanism includes: bearing seat, fixedly installed in the inner side of the cabinet;Swing frame, rotation is arranged in the inner side wall of the cabinet by bearing seat;Lowering roller, rotation is connected in the end of the swing frame away from bearing seat;Positioning shaft, fixedly set in the inner side wall of the cabinet, and the middle part of the swing frame is connected by tension spring and positioning shaft;Electric push rod, symmetrically fixedly installed on the inner side wall of two the cabinet, and the push rod end of the electric push rod is supported on the swing frame on the same side limit respectively.

[0006] Further, the covering film roller includes a roller body, a rubber ring body and a liquid storage frame, the roller body is rotatably installed on the mounting shaft, the mounting shaft is provided with a wheel hub motor for driving the roller body, the outer periphery of the roller body is sealed with a layer of rubber ring body, the side of the roller body close to the rubber ring body is fixedly connected with a ring-shaped liquid storage frame, the liquid storage frame and the rubber ring body are in communication and sealed, the cavities of the rubber ring body and the liquid storage frame on the roller body are filled with hydraulic oil, the side of the liquid storage frame away from the rubber ring body is slidably connected with a piston plate through a connecting rod, the piston plate and the liquid storage frame are in sealed sliding fit, a spring is arranged between the connecting rod of the liquid storage frame and the piston plate, the outer wall of the liquid storage frame away from the rubber ring body is fixedly connected with a mounting rod, the mounting rod is slidably connected with an adjusting plate, the end of the connecting rod of the adjusting plate abuts against the piston plate, a lead screw is rotatably arranged on the outer wall of the liquid storage frame, and the lead screw is in threaded fit with the adjusting plate.

[0007] Further, the dry film roller is detachably arranged between the two cabinets, the dry film roller is convenient for winding the photosensitive dry film roll on the cabinet, not less than two guide rollers are rotatably connected on the inner side wall of the cabinet between the lowering mechanism and the dry film roller, the guide rollers are used for guiding the photosensitive dry film, and a limiting rod is fixedly connected on the inner side wall of the cabinet between the swing frame and the conveying roller, the limiting rod is used for limiting the swing frame.

[0008] Further, the film-coating roller is provided with a pre-tightening mechanism on the side of the photosensitive dry film, the pre-tightening mechanism comprises two fixed plates symmetrically fixed to the two ends of the mounting shaft, a guide rod is fixedly connected to each of the two fixed plates, a sliding block is slidably connected to the guide rod of each of the two fixed plates, a pre-tightening roller is rotatably mounted between the two sliding blocks, and a spring two is arranged between the fixed plate and the sliding block, the pre-tightening roller is used to press the photosensitive dry film wound on the film-coating roller.

[0009] Further, the side wall of the casing near the film-coating roller is symmetrically provided with a wedge-shaped plate, a limiting wheel is rotatably arranged on the sliding block at the two ends of the pre-tightening roller, the wedge-shaped plate contacts and blocks the limiting wheel, so that the spring two is in a compressed state, when the film-coating roller is not pressed down, the wedge-shaped plate will block the limiting wheel against the elastic force of the spring two, so that a gap is left between the pre-tightening roller and the film-coating roller for the photosensitive dry film to pass through.

[0010] Further, a supporting mechanism is arranged between the two casings, the supporting mechanism comprises two connecting shafts symmetrically fixed to the inner side walls of the casings, a supporting frame is rotatably connected between the two connecting shafts, a plurality of supporting rollers are rotatably mounted in the supporting frame, the supporting frame is located inside the swing frame and the supporting rollers are lower than the pressing roller, the supporting rollers of the supporting frame are used to roll and support the photosensitive dry film, a sliding groove is formed in the outer wall of the supporting frame, a connecting plate is fixedly connected to the outer wall of the swing frame, a protruding rod is fixedly connected to the side of the connecting plate close to the supporting frame, and the protruding rod is located in the sliding groove of the supporting frame.

[0011] Further, a dehumidifying mechanism is arranged on one side of the pre-tightening mechanism, the dehumidifying mechanism comprises a mounting frame and a heating lamp, the end of the fixed plate away from the film-coating roller is fixedly connected with the mounting frame, the mounting frame is obliquely assembled with a strip-shaped heating lamp, the surface of the heating lamp faces the film-coating roller, and the heating lamp is used to heat and dry the photosensitive dry film wound on the film-coating roller.

[0012] Further, a smoothing mechanism is arranged between the two casings near the dry film roller, the smoothing mechanism comprises a bracket and a smoothing roller, the bracket is transversely fixedly connected to the inner side walls of the two casings, two smoothing rollers are symmetrically rotatably mounted on the bracket, the two smoothing rollers are distributed in an "eight" shape below the bracket, the smoothing roller is in rolling contact with the photosensitive dry film of the film-coating, and the smoothing roller is used to orderly smooth the photosensitive dry film.

[0013] Further, a method for adjusting the film-coating pressure of a photosensitive dry film is provided, and the specific steps are as follows:

[0014] S1, the substrate to be coated is pushed from the side of the shell pressure roller, passes through the pressure roller in turn and is transmitted to the conveying roller, at the same time, the dry film on the dry film roller passes through the guide roller and the downward pressing mechanism in turn, and then passes around the coating roller, and is guided downward to the roller pressing area between the coating roller and the pressure roller;

[0015] S2, the hydraulic cylinder is started to push down the coating roller, the rubber ring on the coating roller can elastically press the dry film to the surface of the substrate, the limiting wheel of the pre-tightening roller is separated from the limiting of the wedge-shaped plate, and the dry film is pressed on the surface of the coating roller under the action of spring two, at the same time, the electric push rod is retracted, the support limiting of the swing frame is released, the swing frame swings around the bearing seat under the action of the tension of the tension spring, the dry film is pressed by the downward pressing roller and keeps stable tension, and the support frame continuously supports the dry film;

[0016] S3, the coating roller rotates under the drive of the wheel hub motor, the dry film is continuously laminated on the surface of the substrate to perform coating operation, in the process, the heating lamp heats the dry film on the coating roller to remove moisture, and the smoothing roller is used to smooth the dry film to prevent deviation and wrinkle.

[0017] The beneficial effects of the present application are:

[0018] 1. The downward pressing mechanism of the electric push rod and the tension spring is used to automatically tighten the dry film in the initial stage of coating, the downward pressing roller elastically presses the film material under the action of the tension spring, constant tension control is realized, the waste of the first section of film material caused by manual tension adjustment is avoided, and the coating quality of the dry film is improved.

[0019] 2. The coating roller adopts a hydraulic oil expansion structure, so that the coating roller fully matches the grooves and protrusions on the surface of the substrate during the rolling process, uniform matching is realized, and the coating demand of the surface uneven or high-precision circuit board can be met.

[0020] 3. The pre-tightening mechanism is used to automatically press the film material at the end of the dry film unwinding, combined with the continuous support of the support frame, the tail dry film is prevented from falling or wrinkling, the tail coating quality is guaranteed, and the waste rate is reduced.

[0021] 4. The heating lamp can also be used to pre-dry the dry film, so as to prevent the influence of high humidity on the adhesion and photosensitive performance; the "eight" shaped smoothing roller can effectively correct the deviation of the film material, and further reduce the risk of wrinkling. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0023] Figure 2 It is a schematic diagram of the shell, pressure roller, coating roller and dry film roller and other components of the present application.

[0024] Figure 3The schematic diagram of the cooperation relationship of the film-coating roller, dry film roller, guide roller and down-pressing mechanism of the present application.

[0025] Figure 4 The schematic diagram of the guide frame, sliding frame, film-coating roller, mounting shaft and hydraulic cylinder of the present application.

[0026] Figure 5 The schematic diagram of the specific structure of the film-coating roller of the present application.

[0027] Figure 6 The schematic diagram of the specific components of the machine shell and down-pressing mechanism of the present application.

[0028] Figure 7 The schematic diagram of the components such as the film-coating roller, pre-tightening mechanism and dehumidification mechanism of the present application.

[0029] Figure 8 The connection relationship diagram of the mounting shaft, fixed plate, guide rod, sliding block and pre-tightening roller of the present application.

[0030] Figure 9 The schematic diagram of the cooperation relationship of the machine shell, sliding block, wedge-shaped plate and limiting wheel and other components of the present application.

[0031] Figure 10 The schematic diagram of the components such as the swinging frame, support frame and connecting plate of the present application.

[0032] Figure 11 The schematic diagram of the specific components of the support mechanism of the present application.

[0033] Figure 12 The schematic diagram of the connection relationship of the support frame and smoothing roller of the present application.

[0034] In the above drawings: 100: photosensitive dry film, 200: substrate, 1: machine shell, 2: pressure-bearing roller, 21: conveying roller, 3: guide frame, 4: sliding frame, 5: film-coating roller, 51: mounting shaft, 501: roller body, 502: rubber ring body, 503: liquid storage frame, 504: piston plate, 505: spring I, 506: mounting rod, 507: adjusting plate, 508: screw rod, 6: hydraulic cylinder, 7: dry film roller, 8: down-pressing mechanism, 81: bearing seat, 82: swinging frame, 83: down-pressing roller, 84: positioning shaft, 85: tension spring, 86: electric push rod, 87: limiting rod, 9: guide roller, 10: pre-tightening mechanism, 101: fixed plate, 102: guide rod, 103: sliding block, 104: pre-tightening roller, 105: spring II, 11: wedge-shaped plate, 111: limiting wheel, 12: support mechanism, 121: connecting shaft, 122: support frame, 1221: sliding groove, 123: support roller, 124: connecting plate, 1241: protruding rod, 13: dehumidification mechanism, 131: mounting frame, 132: heating lamp, 14: smoothing mechanism, 141: support frame, 142: smoothing roller. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application.

[0036] A photosensitive dry film laminating pressure adjusting device, referring to Figures 1-6As shown, including: the shell 1, the shell 1 is parallelly arranged two support frame; pressure roller 2, rotatably mounted between two shell 1, pressure roller 2 is located in the shell 1 feed side lower part; conveying roller 21, four are provided and arranged horizontally interval between the shell 1; further comprising: guide frame 3, fixedly connected in the shell 1; sliding frame 4, slidingly connected to the shell 1 feed side through the guide frame 3, two sliding frame 4 between fixedly connected with mounting shaft 51, the shell 1 is provided with the guide groove of adaptive mounting shaft 51; film laminating roller 5, rotatably mounted on the mounting shaft 51, the mounting shaft 51 is provided with the wheel hub motor of driving film laminating roller 5; hydraulic cylinder 6, fixedly installed on the top of the shell 1, the piston rod of hydraulic cylinder 6 and corresponding sliding frame 4 are connected; dry film roller 7, arranged on the side away from the film laminating roller 5 of the shell 1, the dry film roller 7 is wound with photosensitive dry film 100; the shell 1 between the film laminating roller 5 and the dry film roller 7 is provided with a pressing mechanism 8, the pressing mechanism 8 is used for pressing the photosensitive dry film 100 wound between the film laminating roller 5 and the dry film roller 7; the pressing mechanism 8 comprises: bearing seat 81, fixedly installed in the inner side of the shell 1; swing frame 82, rotatably arranged in the inner side wall of the shell 1 through the bearing seat 81; lower pressing roller 83, rotatably connected to the end of the swing frame 82 away from the bearing seat 81; positioning shaft 84, fixedly arranged on the inner side wall of the shell 1, the middle part of the swing frame 82 is connected through the tension spring 85 and the positioning shaft 84; electric push rod 86, symmetrically fixedly installed on the inner side wall of two shell 1, the push rod end of the electric push rod 86 is respectively supported and limited on the corresponding swing frame 82 on the same side, so that the tension spring 85 is in the stretching state, first push the film coated substrate 200 from the pressure roller 2 side of the shell 1 into, the substrate 200 will gradually transmit in two shell 1 to the conveying roller 21, then the photosensitive dry film 100 wound on the dry film roller 7 is pulled out and wound between the film laminating roller 5 and the pressure roller 2 after passing through the pressing mechanism 8, the hydraulic cylinder 6 is started to drive the film laminating roller 5 on the sliding frame 4 to press down along the guide frame 3, the film laminating roller 5 pressed down will pull out the photosensitive dry film 100 and press it onto the substrate 200, then the push rod of the electric push rod 86 is retracted and no longer supports the swing frame 82, at this time the lower pressing roller 83 on the swing frame 82 will contact the photosensitive dry film 100 under the action of the tension spring 85, until the lower pressing roller 83 elastically stretches the photosensitive dry film 100, so that the photosensitive dry film 100 can maintain a tight state in the initial stage of coating the substrate 200, avoid wasting the first section when manually adjusting the coating tension of the photosensitive dry film 100, and improve the quality of the photosensitive dry film 100 coated on the substrate 200.

[0037] Reference Figures 3-5As shown, the film-coating roller 5 includes a roller body 501, a rubber ring body 502, and a liquid storage frame 503. The roller body 501 is rotatably mounted on a mounting shaft 51, and a hub motor is arranged on the mounting shaft 51 to drive the roller body 501. The roller body 501 is peripherally sealed with a layer of rubber ring body 502. The rubber ring body 502 is fixedly connected to one side of the roller body 501. The rubber ring body 502 and the liquid storage frame 503 are in communication and sealed with each other. The cavities of the rubber ring body 502 and the liquid storage frame 503 on the roller body 501 are filled with hydraulic oil. The liquid storage frame 503 is slidably connected to a piston plate 504 through a connecting rod at a side away from the rubber ring body 502. The piston plate 504 and the liquid storage frame 503 are in sealed sliding fit. A spring 505 is arranged between the connecting rod of the liquid storage frame 503 and the piston plate 504. An installation rod 506 is fixedly connected to an outer wall of the liquid storage frame 503 away from the rubber ring body 502. An adjusting plate 507 is slidably connected to the installation rod 506. The adjusting plate 507 abuts against the connecting rod end of the piston plate 504. A lead screw 508 is rotatably arranged on the outer wall of the liquid storage frame 503. The lead screw 508 is in threaded fit with the adjusting plate 507. The adjusting plate 507 is driven by screwing the lead screw 508 to push the piston plate 504 against the elastic force of the spring 505. The piston plate 504 can press the hydraulic oil in the liquid storage frame 503 into the rubber ring body 502 to fully expand the rubber ring body 502. When the film-coating roller 5 is driven by the hydraulic cylinder 6 to press the photosensitive dry film 100 onto the substrate 200, the expanded rubber ring body 502 on the roller body 501 can tightly roll the photosensitive dry film 100 onto the substrate 200, so that the recesses and protruding structures on the substrate 200 can be fully covered by the photosensitive dry film 100, and the quality of rolling the photosensitive dry film 100 on the substrate 200 by the film-coating roller 5 is further improved.

[0038] Referring to Figure 3 and Figure 6 As shown, the dry film roller 7 is detachably arranged between the two machine housings 1. The dry film roller 7 is convenient for mounting the roll of photosensitive dry film 100 on the machine housing 1. Two guide rollers 9 are rotatably connected to the inner side walls of the machine housing 1 between the lower pressing mechanism 8 and the dry film roller 7. The guide rollers 9 are used to guide the photosensitive dry film 100. A limiting rod 87 is fixedly connected to the inner side wall of the machine housing 1 between the swing frame 82 and the conveying roller 21. The limiting rod 87 is used to limit the swing frame 82. The limiting rod 87 can limit the swing range of the swing frame 82 to ensure that the swing frame 82 is tightly stretched within a safe range.

[0039] Before the pressure regulating device is started, the operator will send the substrate 200 to be laminated into the equipment inlet smoothly, so that the substrate 200 passes through the pressure roller 2 on the feeding side and is accurately transmitted to the plurality of conveying rollers 21 arranged horizontally inside, completing the positioning and support of the substrate 200. Then the photosensitive dry film 100 strip drawn from the dry film roller 7 passes through the accurate guidance of the guide rollers 9 and passes through the area below the lower pressing roller 83 of the lower pressing mechanism 8. The photosensitive dry film 100 finally passes around the lamination roller 5 and falls into the working area between the lamination roller 5 and the lower pressure roller 2 below. After the preparation is completed, the operator operates the control system to start the hydraulic cylinder 6. The piston rod of the hydraulic cylinder 6 pushes the sliding frame 4 downward, and the sliding frame 4 moves downward smoothly along the guide frame 3 fixed in the machine shell 1, driving the mounting shaft 51 and the lamination roller 5 thereon to descend synchronously. The lamination roller 5 will directly press on the photosensitive dry film 100 laid on the surface of the substrate 200, and the photosensitive dry film 100 will be preliminarily pressed on the substrate 200. During the lamination process, the hydraulic adjusting mechanism inside the lamination roller 5 plays a key role. By rotating the screw rod 508 to push the adjusting plate 507, the piston plate 504 will press the hydraulic oil in the liquid storage frame 503 into the rubber ring body 502, so that the rubber ring body 502 can expand and tightly fit the surface of the substrate 200. Even if the substrate 200 has a concave-convex structure, the photosensitive dry film 100 pressed by the rubber ring body 502 can also fully cover the substrate 200. At the same time, the electric push rod 86 is enabled. The electric push rod 86 actively retracts the push rod, which supports the swing frame 82. The electric push rod 86 will release the rigid support and limit of the swing frame 82. Since the tension spring 85 connected between the swing frame 82 and the positioning shaft 84 is always in a pre-tensioned state, the swing frame 82 loses support and rotates downward around the bearing seat 81 fixed on the machine shell 1, so that the lower pressing roller 83 at the end of the swing frame 82 moves downward. The lower pressing roller 83 will press and contact the photosensitive dry film 100 strip below it. The elastic property of the tension spring 85 enables the lower pressing roller 83 to exert a continuous, stable and self-adapting tension on the photosensitive dry film 100, ensuring that the photosensitive dry film 100 is in an ideal tight state at the beginning of the lamination operation, thereby effectively eliminating the problems of material waste and poor adhesion caused by insufficient tension or manual adjustment lag in the initial lamination stage.

[0040] Reference Figure 1 , Figure 7 and Figure 8As shown, the film-coating roller 5 is provided with a pre-tightening mechanism 10 on the side of the photosensitive dry film 100. The pre-tightening mechanism 10 includes two fixed plates 101 symmetrically fixed to the two ends of the mounting shaft 51, two guide rods 102 fixedly connected in the two fixed plates 101, two sliding blocks 103 slidingly connected on the guide rods 102 of the two fixed plates 101, and a pre-tightening roller 104 rotatably mounted between the two sliding blocks 103. A spring 105 is arranged between the fixed plate 101 and the sliding block 103. The pre-tightening roller 104 is used to press the photosensitive dry film 100 wound on the film-coating roller 5. When the photosensitive dry film 100 on the dry film roller 7 is unwound, the pre-tightening roller 104 can always press the photosensitive dry film 100 on the film-coating roller 5 under the action of the spring 105, so as to avoid the problem of relaxation and wrinkles of the photosensitive dry film 100 after unwinding.

[0041] Referring to Figure 8 and Figure 9 As shown, the side wall of the casing 1 close to the film-coating roller 5 is symmetrically provided with a wedge-shaped plate 11. The sliding blocks 103 at the two ends of the pre-tightening roller 104 are rotatably provided with limit wheels 111. The wedge-shaped plate 11 contacts and blocks the limit wheels 111, so that the spring 105 is in a compressed state. When the film-coating roller 5 is not pressed down, the wedge-shaped plate 11 will block the limit wheels 111 against the elastic force of the spring 105, so that a space is left between the pre-tightening roller 104 and the film-coating roller 5 for the photosensitive dry film 100 to pass through. When the hydraulic cylinder 6 drives the film-coating roller 5 to roll down the photosensitive dry film 100, the pre-tightening mechanism 10 will move down synchronously with the film-coating roller 5. At this time, the limit wheels 111 at the end of the sliding block 103 in the pre-tightening mechanism 10 will slide off the wedge-shaped plate 11. After the pre-tightening roller 104 is limited by the wedge-shaped plate 11, the photosensitive dry film 100 will be pressed on the surface of the film-coating roller 5 under the action of the spring 105, so as to guarantee the quality of the film-coating roller 5 rolling the photosensitive dry film 100 on the substrate 200.

[0042] Referring to Figure 1 , Figure 10 and Figure 11As shown, the two housings 1 are provided with a support mechanism 12, the support mechanism 12 includes two connecting shafts 121 fixedly connected to the inner side walls of the housings 1, and a support frame 122 is rotatably connected between the two connecting shafts 121, a plurality of support rollers 123 are rotatably installed inside the support frame 122, the support frame 122 is located inside the swing frame 82 and the support rollers 123 are all lower than the lower pressing roller 83, the support rollers 123 of the support frame 122 are used to roll and support the photosensitive dry film 100, a sliding groove 1221 is formed in the outer wall of the support frame 122, a connecting plate 124 is fixedly connected to the outer wall of the swing frame 82, a lug 1241 is fixedly connected to the side of the connecting plate 124 close to the support frame 122, the lug 1241 is located in the sliding groove 1221 of the support frame 122, and during the process that the lower pressing roller 83 of the swing frame 82 presses the photosensitive dry film 100 downward, the swing frame 82 drives the support frame 122 to move downward synchronously through the connecting plate 124, so that the support rollers 123 on the support frame 122 can always support the photosensitive dry film 100, and when the photosensitive dry film 100 on the dry film roller 7 is unwound, under the guidance of the guide roller 9 and the support of the support frame 122, the photosensitive dry film 100 can be rolled straight by the coating roller 5 to the substrate 200, avoiding that the photosensitive dry film 100 at the tail of the dry film roller 7 falls downward, and increasing the risk of damage to the photosensitive dry film 100 at the tail.

[0043] Referring to Figure 1 and Figure 7 As shown, the pre-tightening mechanism 10 is provided with a dehumidification mechanism 13 on one side, the dehumidification mechanism 13 includes a mounting frame 131 and a heating lamp 132, and the mounting frame 131 is fixedly connected to the end of the fixed plate 101 away from the coating roller 5, the heating lamp 132 is obliquely assembled on the mounting frame 131 in a strip shape, and the heating lamp 132 faces the surface of the coating roller 5, the heating lamp 132 is used to heat and dry the photosensitive dry film 100 wound on the coating roller 5, preventing that the humidity of the photosensitive dry film 100 is too high to cause the film layer to absorb moisture, affecting the photosensitive performance and adhesion.

[0044] Referring to Figure 1 and Figure 12 As shown, the two housings 1 are provided with a smoothing mechanism 14 near the dry film roller 7, the smoothing mechanism 14 includes a bracket 141 and a smoothing roller 142, the bracket 141 is fixedly connected to the inner side walls of the two housings 1 in a transverse direction, and two smoothing rollers 142 are rotatably installed on the bracket 141 in a symmetrical manner, the two smoothing rollers 142 are distributed in an "eight" shape below the bracket 141, the smoothing roller 142 is in rolling contact with the photosensitive dry film 100 being coated, and the smoothing roller 142 is used to orderly smooth the photosensitive dry film 100, reducing the risk of deviation or wrinkling of the photosensitive dry film 100.

[0045] When the film coating operation of the substrate 200 is officially started, the wheel hub motor on the mounting shaft 51 drives the film coating roller 5 to rotate, and the rotation of the film coating roller 5 pulls the photosensitive dry film 100 from the dry film roller 7 continuously on one hand, and forms a roller pressing area with the fixed pressure roller 2 below on the other hand, so that the tight photosensitive dry film 100 is continuously and uniformly pressed on the surface of the substrate 200 advancing at a constant speed; in the process of pressing down the film coating roller 5, the limiting wheel 111 at the end of the pre-tightening roller 104 sliding block 103 slides along the wedge-shaped plate 11 fixed on the side wall of the machine shell 1 and finally comes out of contact, and the pre-tightening roller 104 blocked by the wedge-shaped plate 11 moves immediately to the surface direction of the film coating roller 5 under the action of the restoring force of the internal spring two 105, tightly and stably pressing the photosensitive dry film 100 between them on the roller surface of the film coating roller 5, which can ensure that the photosensitive dry film 100 always maintains good contact with the film coating roller 5 during unwinding, especially when approaching the end of the roll, effectively preventing wrinkles or deviation caused by film relaxation; in the process of pressing down the lower pressing roller 83, the swing frame 82 can drive the lower support frame 122 to move downward as a whole through the connecting plate 124 and the protruding rod 1241 embedded in the sliding groove 1221 of the support frame 122, which makes the multiple support rollers 123 arranged at intervals on the support frame 122 always maintain below the photosensitive dry film 100 strip, providing a continuous rolling support platform for the photosensitive dry film 100 strip, especially when the dry film roller 7 roll is exhausted and the tail of the film loses the source traction, which can effectively prevent the tail dry film from being torn or rolled into the equipment due to the weight sag, and ensure that the tail film can also be smoothly and flatly guided to the roller 9 pressing area for film coating; in the entire film coating strip travel path, the inclined arrangement of the heating lamp 132 continuously radiates heat energy to the surface of the photosensitive dry film 100 around the film coating roller 5, which is gently and effectively heated and dried, removing excess moisture that may affect photosensitivity and adhesion, and near the outlet of the dry film roller 7, the two flattening rollers 142 arranged symmetrically at a specific angle (such as a splayed shape) continuously roll in contact with the surface of the advancing photosensitive dry film 100 strip, which uses its specific angle and rolling friction to exert a force to the two sides of the film, real-time flattening the possible fine wrinkles and correcting the deviation trend, maximizing the flatness and position accuracy of the film before entering the key film coating area, and finally ensuring high-quality and low-waste film coating operation.

[0046] A method for adjusting the film coating pressure of a photosensitive dry film, the specific steps are as follows:

[0047] S1, push the substrate 200 to be coated from the side of the pressure roller 2 of the machine shell 1, pass through the pressure roller 2 in turn and transmit to the conveying roller 21, at the same time, the photosensitive dry film 100 on the dry film roller 7 passes through the guide roller 9 and the lower pressing mechanism 8 in turn, and then passes around the film coating roller 5 and is guided downward to the roller pressing area between the film coating roller 5 and the pressure roller 2;

[0048] S2, the hydraulic cylinder 6 is started to push the film-coated roller 5 to press down, and the rubber ring body 502 on the film-coated roller 5 can be elastically pressed down to the surface of the substrate 200 to the photosensitive dry film 100, the limiting wheel 111 of the pre-tightening roller 104 is disengaged from the limiting of the wedge-shaped plate 11, and under the action of the spring two 105, the photosensitive dry film 100 is pressed on the surface of the film-coated roller 5, at the same time, the electric push rod 86 is retracted, the support limiting of the swing frame 82 is released, the swing frame 82 swings around the bearing seat 81 under the tension of the tension spring 85, the lower pressing roller 83 presses the photosensitive dry film 100 and keeps stable tension, and the support frame 122 continuously supports the photosensitive dry film 100;

[0049] S3, the film-coated roller 5 is rotated under the drive of the wheel hub motor, continuously pastes the photosensitive dry film 100 on the surface of the substrate 200 to carry out the film-coating operation, and the heating lamp 132 heats and dehumidifies the photosensitive dry film 100 on the film-coated roller 5 in the process, and the smoothing roller 142 is matched to smooth the film material of the photosensitive dry film 100 to prevent deviation and wrinkle.

Claims

1. A photosensitive dry film laminating pressure adjusting device, comprising: A casing (1) is provided with two parallel frames; a pressure roller (2) is rotatably installed between the two frames of the casing (1); a conveying roller (21) provided with no less than two and horizontally arranged between the machine shell (1); characterized in that it further comprises: a guide frame (3) fixedly connected in the machine shell (1); a sliding frame (4) slidably connected to the machine shell (1) through the guide frame (3) on the feeding side, two sliding frames (4) being fixedly connected with a mounting shaft (51); and a lamination roller (5) rotatably mounted on the mounting shaft (51); the lamination roller (5) comprises a roller body (501), a rubber ring body (502) and a liquid storage frame (503), the roller body (501) is rotatably mounted on the mounting shaft (51), a hub motor for driving the roller body (501) is arranged on the mounting shaft (51), a layer of rubber ring body (502) is sealingly sleeved on the periphery of the roller body (501), a ring-shaped liquid storage frame (503) is fixedly connected to one side of the roller body (501) close to the rubber ring body (502), the liquid storage frame (503) and the rubber ring body (502) are in communication and sealing, the cavities of the rubber ring body (502) and the liquid storage frame (503) on the roller body (501) are filled with hydraulic oil, a piston plate (504) is slidably connected to one side of the liquid storage frame (503) away from the rubber ring body (502) through a connecting rod, the piston plate (504) and the liquid storage frame (503) are sealingly and slidably connected, a spring (505) is arranged between the connecting rod of the liquid storage frame (503) and the piston plate (504), an installation rod (506) is fixedly connected to the outer wall of the liquid storage frame (503) away from the rubber ring body (502), an adjusting plate (507) is slidably connected to the installation rod (506), the end of the connecting rod of the adjusting plate (507) abuts against the piston plate (504), a lead screw (508) is rotatably arranged on the outer wall of the liquid storage frame (503), and the lead screw (508) and the adjusting plate (507) are in threaded connection; a hydraulic cylinder (6) is fixedly arranged on the top of the machine shell (1), and the piston rod of the hydraulic cylinder (6) is connected with the corresponding sliding frame (4); a dry film roller (7) is arranged on the side of the machine shell (1) away from the lamination roller (5), and the dry film roller (7) is wound with a photosensitive dry film (100); a pressing mechanism (8) is arranged between the machine shell (1); the pressing mechanism (8) comprises: a bearing seat (81) fixedly arranged on the inner side of the machine shell (1); a swing frame (82) rotatably arranged between the machine shell (1) through the bearing seat (81); a pressing roller (83) rotatably connected to one end of the swing frame (82) away from the bearing seat (81); a positioning shaft (84) fixedly arranged between the machine shell (1), the swing frame (82) being connected with the positioning shaft (84) through a tension spring (85); and an electric push rod (86) fixedly arranged on the inner side wall of the machine shell (1), the push rod of the electric push rod (86) being limited and corresponding to the swing frame (82).

2. The photosensitive dry film laminating pressure adjusting device according to claim 1, wherein The dry film roller (7) is detachably arranged between the two machine housings (1), the dry film roller (7) is convenient for winding the roll of photosensitive dry film (100) to be installed on the machine housing (1), the inside wall of the machine housing (1) between the lower pressing mechanism (8) and the dry film roller (7) is rotatably connected with not less than two guide rollers (9), the guide rollers (9) are used for guiding the photosensitive dry film (100), the inside wall of the machine housing (1) between the swing frame (82) and the conveying roller (21) is fixedly connected with a limiting rod (87), and the limiting rod (87) is used for limiting the swing frame (82).

3. The photosensitive dry film laminating pressure adjusting device according to claim 2, wherein The film coating roller (5) is provided with a pre-tightening mechanism (10) around one side of the photosensitive dry film (100), the pre-tightening mechanism (10) comprises two fixed plates (101) which are symmetrically fixedly connected to the two ends of the mounting shaft (51), guide rods (102) are fixedly connected in the two fixed plates (101), sliding blocks (103) are slidably connected to the guide rods (102) of the two fixed plates (101), a pre-tightening roller (104) is rotatably installed between the two sliding blocks (103), and springs (105) are arranged between the fixed plate (101) and the sliding block (103).

4. The photosensitive dry film laminating pressure adjusting device according to claim 3, wherein The machine housing (1) is symmetrically provided with wedge-shaped plates (11) on the side wall close to the film coating roller (5), limiting wheels (111) are rotatably arranged on the sliding blocks (103) at the two ends of the pre-tightening roller (104), and the wedge-shaped plates (11) contact and block the limiting wheels (111).

5. The photosensitive dry film laminating pressure adjusting device according to claim 4, wherein Support mechanisms (12) are arranged between the two machine housings (1), the support mechanism (12) comprises two connecting shafts (121) which are symmetrically fixedly connected to the inside walls of the machine housings (1), a support frame (122) is rotatably connected between the two connecting shafts (121), a plurality of support rollers (123) are rotatably installed in the support frame (122) at intervals, the support frame (122) is located inside the swing frame (82) and the support rollers (123) are all lower than the lower pressing roller (83), the support rollers (123) of the support frame (122) are used for rolling and supporting the photosensitive dry film (100), a sliding groove (1221) is formed in the outer wall of the support frame (122), a connecting plate (124) is fixedly connected to the outer wall of the swing frame (82), a convex rod (1241) is fixedly connected to one side of the connecting plate (124) close to the support frame (122), and the convex rod (1241) is located in the sliding groove (1221) of the support frame (122).

6. The photosensitive dry film laminating pressure adjusting device according to claim 5, wherein A dehumidification mechanism (13) is arranged on one side of the pre-tightening mechanism (10), the dehumidification mechanism (13) comprises a mounting frame (131) and a heating lamp (132), one end of the fixed plate (101) away from the film coating roller (5) is fixedly connected with the mounting frame (131), the mounting frame (131) is obliquely assembled with the strip-shaped heating lamp (132), and the surface of the heating lamp (132) faces the film coating roller (5).

7. The pressure adjusting device according to claim 6, wherein the pressure adjusting device is a photosensitive dry film laminating device. The flattening mechanism (14) is arranged between the two housings (1) near the dry film roller (7), and comprises a support (141) and a flattening roller (142). The support (141) is fixedly connected to the inner wall of the two housings (1) in a transverse direction, and the two flattening rollers (142) are symmetrically and rotatably installed on the support (141) in a "8" shape.

8. A method for adjusting the pressure of a photosensitive dry film laminating apparatus, comprising the steps of: a) providing a photosensitive dry film laminating apparatus as defined in claim 7; and b) adjusting the pressure of the photosensitive dry film laminating apparatus. The specific steps are as follows: S1, the substrate (200) to be coated is pushed into the housing (1) from the side of the pressure roller (2), passes through the pressure roller (2) in sequence and is transmitted to the conveying roller (21), at the same time, the photosensitive dry film (100) on the dry film roller (7) passes through the guide roller (9) and the pressing mechanism (8) in sequence, and then passes around the coating roller (5) and is guided to the roller pressing area between the coating roller (5) and the pressure roller (2); S2, the hydraulic cylinder (6) is started to push down the coating roller (5), the rubber ring body (502) on the coating roller (5) can elastically press the photosensitive dry film (100) to the surface of the substrate (200), the limiting wheel (111) of the pre-tightening roller (104) is disengaged from the limiting of the wedge-shaped plate (11), and the photosensitive dry film (100) is pressed on the surface of the coating roller (5) under the action of spring two (105), at the same time, the electric push rod (86) is retracted, the support limiting of the swing frame (82) is released, the swing frame (82) swings around the bearing seat (81) under the action of the tension of the tension spring (85), the lower pressing roller (83) presses the photosensitive dry film (100) and keeps stable tension, and the support frame (122) continuously supports the photosensitive dry film (100); S3, the coating roller (5) rotates under the drive of the wheel hub motor, drives the photosensitive dry film (100) to continuously adhere to the surface of the substrate (200) for coating operation, and the heating lamp (132) heats and dehumidifies the photosensitive dry film (100) on the coating roller (5) in the process, and cooperates with the flattening roller (142) to flatten the photosensitive dry film (100).

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