Device for preventing warping of overflowed glue in curing process of cover film

Abstract

The utility model provides a device for preventing warping of overflowed glue in curing of a cover film, which comprises a programmable drying oven and a humidifying component connected with the programmable drying oven, the programmable drying oven comprises a box body, at least one film drying area is arranged in the box body, and the device is further provided with an electric heating component for providing heat for the film drying area, a control system and an exhaust circulation system. The humidifying assembly is connected with the box body through a pipeline and sends humid air generated by the humidifying assembly to the film drying area through the exhaust circulating system, the control system is electrically connected with the humidifying assembly, and the control system is used for regulating and controlling the working states of the humidifying assembly, the electric heating assembly and the exhaust circulating system. According to the device capable of automatically adjusting the humidity of the drying oven and used for preventing warping of overflowed glue in curing of the cover film, the problems that release paper of the cover film shrinks due to water loss and the cover film warps in the curing process are solved, and the treatment efficiency of the cover film after curing and the product quality are greatly improved; and the production of the copper-clad plate is better ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of flexible copper-clad laminate production, and in particular relates to a device for preventing warping of overflow glue during maturation of a covering film. Background Art

[0002] As the substrate material in the manufacture of printed circuit boards, flexible copper clad laminates mainly play the role of interconnection, insulation and support for printed circuit boards, and have a great influence on the transmission speed, energy loss and characteristic impedance of signals in the circuit. Therefore, the performance, quality, processability, manufacturing level, manufacturing cost, and long-term reliability and stability of circuit boards depend on copper clad laminates to a large extent. Therefore, the position of copper clad laminates in the electronic information industry is becoming more and more important.

[0003] The covering film currently used in copper clad laminates is made of PI coated adhesive and release paper. During the curing process of the overflow glue, it is generally baked directly at 50°C in an oven. During the baking process, the release paper of the covering film will shrink due to water loss, causing the covering film to shrink and curl. The downstream FPC factories have certain requirements for the curling and dimensional stability of the covering film, and they cannot operate if the standards are exceeded. At present, the covering film has excessive curling after baking, and must be placed for a period of time to allow the release paper to re-absorb moisture and restore to flatness. This will inevitably occupy the production space of the workshop, waste production time, and reduce production efficiency.

[0004] The utility model is made based on this situation. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and provide a device for preventing warping of the covering film during curing glue overflow which can automatically adjust the humidity of the oven, which not only solves the problems of water loss and shrinkage of the release paper of the covering film and warping of the covering film during the curing process, but also greatly improves the processing efficiency of the covering film after curing and the quality of the product, thereby better ensuring the production of the copper clad laminate.

[0006] The utility model is realized by the following technical solutions:

[0007] In order to solve the above technical problems, the utility model provides a device for preventing warping of overflow glue during maturation of covering film, comprising a programmable oven and a humidifying component connected to the programmable oven, the programmable oven comprising a box body, at least one film drying area is provided in the box body, and an electric heating component for providing heat to the film drying area, a control system, and an exhaust circulation system are also provided. The humidifying component is connected to the box body pipeline and the humid air generated by the humidifying component is delivered to the film drying area through the exhaust circulation system. The control system is electrically connected to the humidifying component, and the control system is used to regulate the working states of the humidifying component, the electric heating component, and the exhaust circulation system.

[0008] As described above, the device for preventing warping of overflow glue during maturation of covering film is provided with a humidity sensor in the film baking area, and the humidity sensor is electrically connected to the control system.

[0009] As described above, the device for preventing warping of overflow glue during maturation of covering film is provided in the box body with a turbine airflow acceleration zone, the turbine airflow acceleration zone is provided with a turbine airflow inlet and a turbine airflow outlet, and the side wall of the film drying zone is provided with an air inlet and an air outlet; the exhaust circulation system includes an air inlet duct and an air outlet duct, the air inlet duct is connected with the turbine airflow outlet and the air inlet; the air outlet duct is connected with the turbine airflow inlet and the air outlet.

[0010] As described above, the device for preventing warping of the covering film during curing and overflow of glue, the exhaust circulation system also includes a turbo circulation fan arranged at the turbo airflow inlet, a plurality of air intake fans arranged at the air inlet, and a plurality of exhaust fans arranged at the air outlet.

[0011] In the device for preventing warping of overflow glue during maturation of covering film as described above, the air inlet and the air outlet are respectively and correspondingly arranged on the inner walls on the left and right sides of the film drying area.

[0012] In the device for preventing warping of overflow glue during maturation of covering film as described above, the humidifying assembly is connected with an air outlet pipe, and the outlet of the air outlet pipe is communicated with the air inlet duct or the air outlet duct.

[0013] As described above, the device for preventing warping of overflow glue during maturation of covering film, the outlet pipe extends into the turbine air inlet.

[0014] In the device for preventing warping of overflow glue during maturation of covering film as described above, the electric heating component is arranged in the turbine airflow acceleration zone, a temperature sensor is arranged in the film baking zone, and the temperature sensor is electrically connected to the control system.

[0015] The device for preventing warping of the covering film during curing and overflowing glue as described above, the control system includes a controller arranged in the box body, a display screen arranged on the outer panel of the box body, and a control keyboard connected to the display screen.

[0016] As described above, the device for preventing warping of overflow glue during maturation of covering film can be provided with an audible and visual alarm for indicating whether the temperature and humidity in the film drying area are abnormal.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The utility model is a device for preventing the over-glue warping of the covering film during curing. By connecting a humidifying component outside a programmable oven and automatically adjusting the humidity and temperature in the film drying area of ​​the oven through a control system, the moisture and heat balance of the air in the glue drying area is maintained. This not only solves the problems of water loss and shrinkage of the release paper of the covering film and warping of the covering film during the curing process, but also greatly improves the processing efficiency of the covering film after curing and the quality of the product, and better guarantees the subsequent production of copper clad laminates;

[0019] 2. The device for preventing the overflow of glue during the maturation of the covering film of the utility model has a simple structure, can save the placement time of the covering film after maturation, shorten the manufacturing cycle, and thus reduce the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", "vertical", "horizontal", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention; "several" means two or more.

[0024] like Figure 1 As shown, the utility model is a device for preventing warping of overflow glue during maturation of covering film, comprising a programmable oven 1 and a humidifying component 2 connected to the programmable oven 1, the programmable oven 1 comprises a box body 11, at least one film drying area 3 is arranged in the box body 11, and an electric heating component 4 for providing heat to the film drying area 3, a control system 5, and an exhaust circulation system 6 are also provided. In this embodiment, the humidifying component 2 is connected to the box body 11 through a pipeline and delivers the humid air generated by the humidifying component 2 to the film drying area 3 through the exhaust circulation system 6, and the control system 5 is electrically connected to the humidifying component 2; the control system 5 is used to regulate the working states of the humidifying component 2, the electric heating component 4, and the exhaust circulation system 6.

[0025] The utility model connects a humidifying component 2 outside the programmable oven 1, and is provided with a film drying area 3 in the box body 11, and is also provided with an electric heating component 4 for providing heat to the film drying area 3, a control system 5, and an exhaust circulation system 6. The control system 5 is used to regulate the working state of the humidifying component 2, the electric heating component 4, and the exhaust circulation system 6, so that the humidity in the oven can be increased during the curing of the overflow glue of the covering film, which not only solves the quality problems of water loss shrinkage and warping of the release paper of the covering film during the curing process, but also greatly improves the processing efficiency and quality of the covering film after curing, and better guarantees the subsequent production of copper clad laminates. Moreover, the structure of the device for preventing the warping of the overflow glue of the covering film during curing of the covering film of this embodiment is simple, which can save the placement time of the covering film after curing, shorten the manufacturing cycle, and reduce the manufacturing cost.

[0026] The electric heating assembly 4 of the utility model is arranged in the turbine airflow acceleration zone 8, and a humidity sensor 71 is arranged in the film drying zone 3, and the humidity sensor 71 is electrically connected to the control system 5. The control system 5 controls the humidity of the film drying zone 3 to 50-60% RH through the feedback of the humidity sensor 71.

[0027] like Figure 1 As shown, a turbine airflow acceleration zone 8 is provided in the box body 11, and a turbine airflow inlet 81 and a turbine airflow outlet 82 are provided in the turbine airflow acceleration zone 8. An air inlet 31 and an air outlet 32 ​​are provided on the side wall of the film drying zone 3; the exhaust circulation system 6 includes an air inlet duct 61 and an air outlet duct 62, and the air inlet duct 61 is connected with the turbine airflow outlet 82 and the air inlet 31; the air outlet duct 62 is connected with the turbine airflow inlet 81 and the air outlet 32.

[0028] Furthermore, the exhaust circulation system 6 also includes a turbo circulation fan 63 disposed at the turbo airflow inlet 81 , a plurality of air intake fans 64 disposed at the air inlet 31 , and a plurality of exhaust fans 65 disposed at the air outlet 32 ​​.

[0029] In this embodiment, the setting of the air inlet duct 61 and the air outlet duct 62 enables the hot and humid air in the turbine airflow acceleration zone 8 to better circulate with the air in the film drying zone 3. The air inlet fan 64 of the air inlet 31 draws the air in the air inlet duct 61 into the film drying zone 3, and the air is quickly discharged into the air outlet duct 62 by the exhaust fan 65 of the exhaust port 32. The air outlet duct 62 is connected to the turbine circulation fan 63 in the turbine airflow acceleration zone 8. In this way, the circulation of the hot and humid air in the turbine airflow acceleration zone 8 and the film drying zone 3 is completed, and the hot and humid air inside the box body 1 is always in the heat balance and humidity balance in the high-speed circulation mode.

[0030] The air inlet 31 and the air outlet 32 ​​are respectively and correspondingly arranged on the inner walls on the left and right sides of the film drying area 3. That is to say, the air inlet fan 64 and the air outlet fan 65 are respectively and correspondingly arranged on the inner walls on the left and right sides of the film drying area 3. This is more conducive to the convection movement of the hot and humid air in the film drying area 3, ensuring that the hot and humid air circulates quickly and evenly.

[0031] In this embodiment, the humidifying component 2 is a humidifier. Specifically, the humidifying component 2 is connected to an outlet pipe 21, and a pipe opening 211 of the outlet pipe 21 is connected to the air inlet duct 61 or the air outlet duct 62. The pipe opening 211 of the outlet pipe 21 extends into the turbine air inlet 81, and a turbine circulation fan 63 is installed at the turbine air inlet 81, which can accelerate the mixing speed of moisture and hot air and the circulation speed of humid hot air.

[0032] In this embodiment, when the device for preventing warping of overflow glue during maturation of the covering film is in the on state, the humidifying component 2 is started, and moisture is discharged through the pipe mouth 211 of the outlet pipe 21, and the turbo circulation fan 63 of the turbo airflow acceleration zone 8 is started. The hot and humid air and moisture are accelerated by the turbo circulation fan 63 and discharged from the turbo airflow acceleration zone 8 to the air inlet duct 61, and enter the film drying zone 3 through the air inlet duct 61 on the right side of the film drying zone 3 and the air inlet fan 64, and then discharged from the air outlet fan 65 on the left side to the air outlet duct 62, and enter the turbo airflow acceleration zone 8 again through the turbo circulation fan 63, so that the air inside the box 11 is always in a hot and cold balance and a humidity balance in the high-speed circulation mode.

[0033] A temperature sensor 72 is also provided in the film drying area 3, and the temperature sensor 72 is electrically connected to the control system 5. The control system 5 controls the temperature in the film drying area 3 to be 50-55° C. through the feedback of the temperature sensor 72. Specifically, the control system 5 of this embodiment is used to control the working state of the humidification component 2, the electric heating component 4, and the exhaust circulation system 6, and realizes automatic monitoring and automatic control of the temperature in the film drying area 3 through control.

[0034] The control system 5 of this embodiment includes a controller 51 disposed in the box 11, a display screen 52 disposed on the outer panel of the box 11, and a control keyboard 53 connected to the display screen 52. The display screen 52 is provided with an interface for setting the operating speed of the turbo circulation fan 63, the air intake fan 64, and the air outlet fan 65 in the box 11, the humidity measured by the humidity sensor 71, and the temperature measured by the temperature sensor 72, so as to facilitate setting or monitoring the value of each parameter.

[0035] The box 11 may be provided with an audible and visual alarm 10 for displaying whether the temperature and humidity in the film drying area 3 are abnormal. In this embodiment, the audible and visual alarm 10 is installed on the top of the box and is a vertical three-color warning light, in which yellow represents standby, green represents operation, and red represents failure; the control system 5 instantly detects the values ​​tested by each humidity sensor 71 and temperature sensor 72. When the deviation exceeds the value set by the user, the display screen 52 can prompt the operator where the abnormality occurs and trigger the audible and visual alarm.

Claims

1. A device for preventing warping of the covering film during curing and overflow of glue, characterized in that The programmable oven (1) comprises a programmable oven (1) and a humidifying component (2) connected to the programmable oven (1). The programmable oven (1) comprises a housing (11). The housing (11) is provided with at least one film drying area (3), an electric heating component (4) for providing heat to the film drying area (3), a control system (5), and an exhaust circulation system (6). The humidifying component (2) is connected to the housing (11) by a pipeline and delivers the humid air generated by the humidifying component (2) to the film drying area (3) through the exhaust circulation system (6). The control system (5) is electrically connected to the humidifying component (2). The control system (5) is used to adjust the working states of the humidifying component (2), the electric heating component (4), and the exhaust circulation system (6).

2. The device for preventing warping of the covering film during curing and overflow of glue according to claim 1 is characterized in that A humidity sensor (71) is provided in the film drying area (3), and the humidity sensor (71) is electrically connected to the control system (5).

3. The device for preventing warping of the covering film during curing and overflow of glue according to claim 1, characterized in that The box body (11) is provided with a turbine airflow acceleration zone (8), and the turbine airflow acceleration zone (8) is provided with a turbine airflow inlet (81) and a turbine airflow outlet (82); the side wall of the film drying zone (3) is provided with an air inlet (31) and an air outlet (32); the exhaust circulation system (6) includes an air inlet duct (61) and an air outlet duct (62); the air inlet duct (61) is connected to the turbine airflow outlet (82) and the air inlet (31); the air outlet duct (62) is connected to the turbine airflow inlet (81) and the air outlet (32).

4. The device for preventing warping of the covering film during curing and overflow of glue according to claim 3 is characterized in that The exhaust circulation system (6) further comprises a turbo circulation fan (63) arranged at the turbo airflow inlet (81), a plurality of air intake fans (64) arranged at the air inlet (31), and a plurality of exhaust fans (65) arranged at the air outlet (32).

5. The device for preventing warping of the covering film during curing and overflow of glue according to claim 3 is characterized in that The air inlet (31) and the air outlet (32) are respectively and correspondingly arranged on the inner walls on the left and right sides of the film drying area (3).

6. The device for preventing warping of the covering film during curing and overflow of glue according to claim 3, characterized in that The humidifying component (2) is connected to an air outlet pipe (21), and a pipe opening (211) of the air outlet pipe (21) is in communication with the air inlet duct (61) or the air outlet duct (62).

7. The device for preventing warping of the covering film during curing and overflow of glue according to claim 6, characterized in that The pipe opening (211) of the air outlet pipe (21) extends into the turbine air flow inlet (81).

8. The device for preventing warping of the covering film during curing and overflow of glue according to claim 1, characterized in that A temperature sensor (72) is provided in the film drying area (3), and the temperature sensor (72) is electrically connected to the control system (5).

9. The device for preventing warping of the covering film during curing and overflow of glue according to claim 1, characterized in that The control system (5) comprises a controller (51) arranged in the box (11), a display screen (52) arranged on the outer panel of the box (11), and a control keyboard (53) connected to the display screen (52).

10. The device for preventing warping of the covering film during curing and overflow of glue according to claim 1, characterized in that The box body (11) may be provided with an audible and visual alarm (9) for displaying whether the temperature and humidity in the film drying area (3) are abnormal.

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