High-temperature oven for curing copper clad laminates

Abstract

The present application provides a high-temperature oven for curing copper clad laminates, which relates to the technical field of high-temperature curing of copper clad laminates. It includes an upper fixing table connected to a first rotating disk, a lower fixing table connected to a second rotating disk, the first rotating disk is connected to an outer support rod, the outer support rod is slidably connected to the second rotating disk, a fixing block is slidably connected to the second rotating disk, the fixing block is slidably connected to the second rotating disk, and a rotating motor for driving a material receiving roller and a material feeding roller to rotate is fixedly connected below the fixing block. Ventilation holes for allowing high-temperature gas to pass through are provided on the upper fixing table, the lower fixing table, the first rotating disk and the second rotating disk. The present application can reduce the occurrence of insufficient local heating and curing on the surface of the copper clad laminate due to uneven heating during the curing of the copper clad laminate, and at the same time can provide a relatively uniform tension force during the heating and curing of the copper clad laminate, reducing the deformation of the copper clad laminate during heating.

Description

Technical Field

[0001] The present application relates to the technical field of high-temperature aging of copper-clad laminates, and in particular to a high-temperature oven for aging copper-clad laminates. Background Art

[0002] Flexible copper clad laminate is a material that combines copper foil and flexible insulating substrate. It is widely used in electronic products, especially in situations where bending or dynamic movement is required. The flexible copper clad laminate is heated to a certain temperature through high temperature to make the resin or other adhesive material between the copper foil and the flexible insulating substrate undergo a cross-linking reaction, thereby improving the mechanical properties and heat resistance of the copper clad laminate. By curing the flexible copper clad laminate, the tensile strength, impact resistance and folding resistance can be better improved.

[0003] Referring to the Chinese patent document with announcement number CN210137504U, entitled A Curing Device for Glue-free Single-sided Flexible Copper Clad Laminate, the device uses a reel mechanism to provide isolation and support for the copper clad laminate, and provides air holes at the top cover and the base to allow the device to be ventilated and breathable, so that hot air can flow through the air holes to the inside of the copper clad laminate during curing, thereby allowing the inside and outside of the copper clad laminate to be heated evenly, thereby reducing the occurrence of wrinkles, oxidation discoloration, etc., and improving product yield. At the same time, the outer layer of the copper clad laminate after unwinding is constrained and protected to reduce the occurrence of bumps.

[0004] According to the above technical scheme, when the flexible copper clad laminate is cured at high temperature, the degree of loosening inside and outside the roll is inconsistent when the rolled copper clad laminate is unrolled, resulting in a relative close distance between some copper clad laminates. When the unrolled copper clad laminate is cured by high-temperature baking, the relative distance between the copper clad laminates cannot be further adjusted, resulting in inconsistent curing degrees between the copper clad laminates. At the same time, hot air is required to heat the copper clad laminate when the copper clad laminate is cured at high temperature. The relative distance between the inner and outer positions of the copper clad laminate is large, resulting in inconsistent heating degrees inside and outside the roll, lower temperature inside the roll and higher temperature outside the roll, and the solvent moves from the outside of the roll to the inside of the roll, resulting in increased volatility inside the roll, causing the copper foil inside the roll to discolor and become scrapped. Summary of the invention

[0005] In view of this, the present application provides a high-temperature oven for curing copper clad laminates, aiming to solve the problem of inconsistent curing degrees of various parts of the copper clad laminates during the curing process.

[0006] The high-temperature oven for aging copper-clad laminates provided in the present application adopts the following technical scheme, including a placement rack, an upper fixed platform, a lower fixed platform, a receiving roller and a discharging roller; a first rotating disk is rotatably connected to the upper fixed platform, a second rotating disk is rotatably connected to the lower fixed platform, an outer support rod is slidably connected to the first rotating disk, the outer support rod is slidably connected to the second rotating disk, and the outer support rod is circumferentially distributed in the middle of the first rotating disk and the second rotating disk, a fixed block for receiving the receiving roller and the discharging roller is slidably connected to the second rotating disk, the fixed block is slidably connected to the second rotating disk, a first rotating motor that drives the receiving roller and the discharging roller to rotate is fixedly connected below the fixed block, and ventilation holes for high-temperature gas to pass through are opened on the upper fixed platform, the lower fixed platform, the first rotating disk and the second rotating disk.

[0007] By tightening the copper clad laminate, the slack and wrinkles during the unwinding process can be reduced, ensuring that the entire layout maintains a uniform distance from the heating source, so that the copper clad laminate can be heated more evenly. At the same time, by tightening the copper clad laminate, it helps the resin or other adhesives to cure evenly during the heating process, reducing local overheating or uncured areas, thereby improving the overall curing quality of the copper clad laminate.

[0008] Optionally, a waist-shaped hole is provided on the first rotating disk and the second rotating disk, a push spring is fixedly connected in the waist-shaped hole, an abutment block is fixedly connected to one end of the push spring, the abutment block abuts against the outer support rod near the axis of the second rotating disk, and is used to push the outer support rod to move away from the axis.

[0009] By tightening the copper clad laminate with the external support rods, the copper clad laminate can be cured in a relatively tense process, so that the internal stress generated by the copper clad laminate during the curing process is relatively small, thereby reducing the probability of deformation of the copper clad laminate after curing due to insufficient stress.

[0010] Optionally, a second rotating motor is fixedly connected to the upper fixed platform, a sealing sleeve is fixedly connected to the output shaft of the second rotating motor, a side of the sealing sleeve away from the second rotating motor is fixedly connected to the second rotating disk, and the sealing sleeve is fixedly connected to the first rotating disk, for driving the first rotating disk and the second rotating disk to rotate.

[0011] By driving the outer support rods, the receiving rollers and the unloading rollers on the first rotating disk and the second rotating disk to rotate, the outer and inner walls of the copper clad laminate can be heated evenly, reducing the probability of insufficient local curing of the copper clad laminate due to inconsistent local temperatures.

[0012] Optionally, a rotary fan is fixedly connected to the lower fixed platform, an air outlet end of the rotary fan is connected to the sealing sleeve, and a connecting hole for circulating gas is opened on the sealing sleeve.

[0013] Optionally, the first rotating disk and the second rotating disk are both provided with sliding grooves for the receiving roller and the discharging roller to slide.

[0014] Optionally, a pull-back spring is fixedly connected between two adjacent fixing blocks, and the pull-back spring is used to pull the two adjacent fixing blocks closer to each other.

[0015] When the inside of the high-temperature oven is heated, the return spring pulls the two fixed blocks closer to each other, so that a relatively stable heating circuit can be formed inside the wound copper clad laminate, reducing the direct movement of gas from the inside to the outside of the copper clad laminate, resulting in insufficient heating temperature of the copper clad laminate located above.

[0016] Optionally, a sealing rod is slidably connected to the second rotating disk, and the sealing rod is arranged in the middle position of the two fixed blocks to maintain the seal inside the flexible copper clad laminate roll.

[0017] Optionally, a heating chamber is provided in the lower fixed platform, a heating wire for heating the gas is provided in the heating chamber, and the heating chamber is connected to the air inlet of the rotating fan.

[0018] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0019] 1. By tightening the copper clad laminate, the relaxation and wrinkles during the unwinding process can be reduced, ensuring that the entire layout maintains a uniform distance from the heating source, so that the copper clad laminate can be heated more evenly. At the same time, by tightening the copper clad laminate, it helps the resin or other adhesives to cure evenly during the heating process, reducing local overheating or uncured areas, thereby improving the overall curing quality of the copper clad laminate.

[0020] 2. By tightening the copper clad laminate with the external support rod, the copper clad laminate can be aged in a relatively tense process, so that the internal stress generated by the copper clad laminate during the aging process is relatively small, and the probability of deformation of the copper clad laminate after aging due to insufficient stress is reduced.

[0021] 3. By driving the outer support rods, the receiving rollers and the unloading rollers on the first rotating disk and the second rotating disk to rotate, the outer and inner walls of the copper clad laminate can be evenly heated, reducing the probability of insufficient local curing of the copper clad laminate due to inconsistent local temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the structure of a high-temperature oven used for aging copper-clad laminates in this embodiment;

[0023] Figure 2 It is a schematic diagram of the structure of the receiving roller and the unwinding roller of this embodiment;

[0024] Figure 3 This is a schematic diagram of the structure of the outer support rod and the sealing sleeve of this embodiment;

[0025] Figure 4 It is a structural schematic diagram of the fixed block and the first rotating motor of this embodiment;

[0026] Figure 5 This is a schematic diagram of the structure of the heating chamber of this embodiment;

[0027] Figure 6 For this embodiment Figure 3 A partial enlarged view of area A in the middle.

[0028] Explanation of the reference numerals in the accompanying drawings: 1. Placement rack; 11. Upper fixed platform; 12. Lower fixed platform; 13. Receiving roller; 14. Discharging roller; 2. First rotating disk; 21. Second rotating disk; 22. Outer support rod; 23. Fixed block; 3. First rotating motor; 31. Vent hole; 4. Waist-shaped hole; 41. Push spring; 42. Abutment block; 5. Second rotating motor; 51. Sealing sleeve; 6. Rotating fan; 7. Sliding groove; 8. Retracting spring; 81. Sealing rod; 9. Heating chamber; 91. Heating wire. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 6 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0030] Reference Figure 1 , Figure 2 and Figure 4The present embodiment provides a high-temperature oven for curing copper-clad laminates, comprising a placement rack 1 placed on a horizontal plane, an upper fixed platform 11 and a lower fixed platform 12 are fixedly connected to the placement rack 1, a sliding groove 7 is provided on the upper fixed platform 11 and the lower fixed platform 12, a receiving roller 13 and a discharging roller 14 are slidably connected in the sliding groove 7, a first rotating disk 2 is rotatably connected to the upper fixed platform 11, a second rotating disk 21 is rotatably connected to the lower fixed platform 12, an outer support rod 22 is slidably connected to the first rotating disk 2, and the outer support rod 22 and the second rotating disk 21 are rotatably connected. It is slidably connected, and the outer support rods 22 are circumferentially distributed in the middle position of the first rotating disk 2 and the second rotating disk 21. The second rotating disk 21 is slidably connected with a fixed block 23 for receiving the material receiving roller 13 and the material discharging roller 14. The fixed block 23 is slidably connected to the second rotating disk 21, and a first rotating motor 3 is fixedly connected below the fixed block 23 to drive the material receiving roller 13 and the material discharging roller 14 to rotate. Vents 31 for high-temperature gas to pass through are provided on the upper fixed table 11, the lower fixed table 12, the first rotating disk 2 and the second rotating disk 21.

[0031] The placing rack 1 is placed on a horizontal plane, and the unloading roller 14 with the uncured copper clad laminate wound on the surface is clamped on the fixed block 23, and the receiving roller 13 is clamped on the fixed block 23 adjacent to the side of the unloading roller 14, the fixed block 23 is pushed to slide on the sliding groove 7, and the copper clad laminate on the unloading roller 14 is pulled, so that the copper clad laminate is wrapped around the outer wall of the outer support rod 22 for a circle to the receiving roller 13, and the interior of the placing rack 1 is heated to make the gas bake from the inside of the wrapped copper clad laminate, and the hot air moves from the inside of the copper clad laminate to the vent 31 on the upper fixed platform 11, and moves from the vent 31 to the outside of the copper clad laminate to heat the outside of the copper clad laminate, and after heating, it moves to the inside of the copper clad laminate through the vent 31 on the lower fixed platform 12 to continuously heat the copper clad laminate, and after the heating of this section of the copper clad laminate is completed, the first rotating motor 3 is started to make the first rotating motor 3 drive the receiving roller 13 and the unloading roller 14 to rotate, and heat the continuously unwound copper clad laminate.

[0032] By tightening the copper clad laminate, the slack and wrinkles during the unwinding process can be reduced, ensuring that the entire layout maintains a uniform distance from the heating source, so that the copper clad laminate can be heated more evenly. At the same time, by tightening the copper clad laminate, it helps the resin or other adhesives to cure evenly during the heating process, reducing local overheating or uncured areas, thereby improving the overall curing quality of the copper clad laminate.

[0033] Reference Figure 2 , Figure 3 and Figure 6A waist-shaped hole 4 is provided on the first rotating disk 2 and the second rotating disk 21, and a push spring 41 is fixedly connected in the waist-shaped hole 4. An abutment block 42 is fixedly connected to one end of the push spring 41. The abutment block 42 abuts against the outer support rod 22 near the axis of the second rotating disk 21, and is used to push the outer support rod 22 to move away from the axis.

[0034] When the receiving roller 13 rewinds the copper clad laminate, the push spring 41 in the waist-shaped hole 4 pushes the abutment block 42 to move, so that the abutment block 42 pushes the outer support rod 22 to move away from the axis of the first rotating disk 2 and the second rotating disk 21, so that the outer support rod 22 tightens the copper clad laminate.

[0035] By tightening the copper clad laminate with the outer support rods 22, the copper clad laminate can be cured in a relatively tense process, so that the internal stress generated by the copper clad laminate during the curing process is relatively small, thereby reducing the probability of deformation of the copper clad laminate after curing due to insufficient stress.

[0036] Reference Figure 2 and Figure 5 A second rotating motor 5 is fixedly connected to the upper fixed platform 11, a sealing sleeve 51 is fixedly connected to the output shaft of the second rotating motor 5, a side of the sealing sleeve 51 away from the second rotating motor 5 is fixedly connected to the second rotating disk 21, and the sealing sleeve 51 is fixedly connected to the first rotating disk 2, for driving the first rotating disk 2 and the second rotating disk 21 to rotate.

[0037] The second rotating motor 5 is started to drive the sealing ring to rotate, and the rotation of the sealing ring drives the first rotating disk 2 and the second rotating disk 21 to rotate.

[0038] By driving the outer support rods 22, the receiving rollers 13 and the discharging rollers 14 on the first rotating disk 2 and the second rotating disk 21 to rotate, the outer and inner walls of the copper clad laminate can be heated evenly, reducing the probability of insufficient local curing of the copper clad laminate due to inconsistent local temperatures.

[0039] Reference Figure 5 A rotary fan 6 is fixedly connected to the lower fixed platform 12, and the air outlet end of the rotary fan 6 is connected to the sealing sleeve 51, and a connecting hole for circulating the gas is opened on the sealing sleeve 51.

[0040] The rotating fan 6 is started to drive the hot air from the air outlet end to the sealing sleeve 51 and to dissipate the hot air to the outside through the connecting hole in the sealing sleeve 51 .

[0041] Reference Figure 4 A pull-back spring 8 is fixedly connected between two adjacent fixing blocks 23 , and the pull-back spring 8 is used to pull the two adjacent fixing blocks 23 closer to each other.

[0042] When heating the inside of the high-temperature oven, the return spring 8 pulls the two fixed blocks 23 closer to each other, so that a relatively stable heating circuit can be formed inside the wound copper clad laminate, reducing the direct movement of gas from the inside of the copper clad laminate to the outside, resulting in insufficient heating temperature of the copper clad laminate located above.

[0043] Reference Figure 2 A sealing rod 81 is slidably connected to the second rotating disk 21. The sealing rod 81 is arranged in the middle of the two fixed blocks 23 to maintain the seal inside the flexible copper clad laminate roll.

[0044] The two adjacent receiving rollers 13 and unloading rollers 14 are kept in a sealed state relative to each other through the sealing rod 81 in the middle.

[0045] Reference Figure 5 A heating chamber 9 is provided in the lower fixed platform 12 , and a heating wire 91 for heating the gas is provided in the heating chamber 9 . The heating chamber 9 is connected to the air inlet of the rotating fan 6 .

[0046] The interior of the mounting frame is heated by the heating wire 91 at the bottom, so that the temperature in the heating chamber 9 is increased.

[0047] The implementation principle of the high temperature oven used for curing the copper clad laminate in the embodiment of the present application is:

[0048] Place the placement rack 1 on a horizontal plane, and clamp the unloading roller 14 with the uncured copper clad laminate wrapped on the surface onto the fixed block 23, and clamp the receiving roller 13 onto the fixed block 23 adjacent to one side of the unloading roller 14, push the fixed block 23 to slide on the sliding groove 7, and pull the copper clad laminate on the unloading roller 14, so that the copper clad laminate is wound around the outer wall of the outer support rod 22 and into the receiving roller 13.

[0049] The push spring 41 in the waist-shaped hole 4 pushes the abutment block 42 to move, so that the abutment block 42 pushes the outer support rod 22 to move away from the axis of the first rotating disk 2 and the second rotating disk 21, so that the outer support rod 22 tightens the copper clad laminate. The heating wire 91 is started to heat the air. During the heating process, the rotating fan 6 is started to blow the air heated by the heating wire 91 into the sealing sleeve 51, and pass the air through the connecting hole of the sealing sleeve 51 to the circumferentially distributed interior of the copper clad laminate to heat the interior of the copper clad laminate. The hot air moves from the interior of the copper clad laminate to the vent hole 31 on the upper fixed platform 11, and moves from the vent hole 31 to the outside of the copper clad laminate to heat the outside of the copper clad laminate. After heating, it moves to the inside of the copper clad laminate through the vent hole 31 on the lower fixed platform 12 to continuously heat the copper clad laminate. After the heating of this section of the copper clad laminate is completed, the first rotating motor 3 is started to drive the receiving roller 13 and the unwinding roller 14 to rotate, so as to heat the continuously unwound copper clad laminate.

[0050] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A high-temperature oven for curing copper-clad laminates, comprising a placement rack (1), an upper fixing table (11), a lower fixing table (12), a receiving roller (13) and a discharging roller (14), characterized in that: The upper fixed platform (11) is rotatably connected to a first rotating disk (2), the lower fixed platform (12) is rotatably connected to a second rotating disk (21), the first rotating disk (2) is slidably connected to an outer support rod (22), the outer support rod (22) is slidably connected to the second rotating disk (21), and the outer support rod (22) is circumferentially distributed in the middle of the first rotating disk (2) and the second rotating disk (21), the second rotating disk (21) is slidably connected to a fixed block (23) for receiving a material receiving roller (13) and a material discharging roller (14), the fixed block (23) is slidably connected to the second rotating disk (21), and a first rotating motor (3) for driving the material receiving roller (13) and the material discharging roller (14) to rotate is fixedly connected below the fixed block (23), and ventilation holes (31) for high-temperature gas to pass through are provided on the upper fixed platform (11), the lower fixed platform (12), the first rotating disk (2) and the second rotating disk (21); The first rotating disk (2) and the second rotating disk (21) are both provided with a waist-shaped hole (4), a pushing spring (41) is fixedly connected in the waist-shaped hole (4), one end of the pushing spring (41) is fixedly connected to an abutment block (42), the abutment block (42) abuts against a portion of the outer support rod (22) close to the axis of the second rotating disk (21), and is used to push the outer support rod (22) to move away from the axis of the second rotating disk (21); A pull-back spring (8) is fixedly connected between two adjacent fixing blocks (23), and the pull-back spring (8) is used to pull the two adjacent fixing blocks (23) closer to each other; A sealing rod (81) is slidably connected to the second rotating disk (21), and the sealing rod (81) is arranged in the middle of the two fixed blocks (23) and is used to maintain the seal inside the flexible copper clad laminate roll.

2. The high temperature oven for aging copper clad laminate according to claim 1, characterized in that: The upper fixed platform (11) is fixedly connected to a second rotating motor (5), an output shaft of the second rotating motor (5) is fixedly connected to a sealing sleeve (51), a side of the sealing sleeve (51) away from the second rotating motor (5) is fixedly connected to the second rotating disk (21), and the sealing sleeve (51) is fixedly connected to the first rotating disk (2) for driving the first rotating disk (2) and the second rotating disk (21) to rotate.

3. The high temperature oven for aging copper clad laminate according to claim 2, characterized in that: A rotary fan (6) is fixedly connected to the lower fixed platform (12); an air outlet end of the rotary fan (6) is in communication with the sealing sleeve (51); and a communication hole for circulating gas is provided on the sealing sleeve (51).

4. The high temperature oven for aging copper clad laminate according to claim 1, characterized in that: The first rotating disk (2) and the second rotating disk (21) are both provided with sliding grooves (7) for the receiving roller (13) and the discharging roller (14) to slide.

5. The high temperature oven for aging copper clad laminate according to claim 3, characterized in that: A heating chamber (9) is provided in the lower fixed platform (12), a heating wire (91) for heating gas is provided in the heating chamber (9), and the heating chamber (9) is communicated with an air inlet of the rotary fan (6).

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