PCB soft board processing heat curing equipment
By employing a bidirectional airflow and dynamic clamping component design in the PCB flexible board thermosetting equipment, the warping deformation and uneven curing caused by uneven heat conduction in traditional devices are solved, achieving a more efficient thermosetting process and ensuring three-dimensional uniform heating and positioning accuracy of the PCB flexible board.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUINING KAISHENGSHI ELECTRONIC TECH CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional thermosetting equipment causes significant temperature differences between the upper and lower surfaces of PCB flexible boards due to asymmetrical heat conduction paths, resulting in warping deformation and uneven curing, which affects positioning accuracy.
The design employs a bidirectional airflow system, where hot air components symmetrically arranged on the first and second support discs simultaneously blow air onto the upper and lower ends of the PCB flexible board. Combined with a rotatable clamping component and dynamic adjustment driven by a motor, this achieves three-dimensional uniform heating, eliminating problems such as localized overheating or uneven curing.
It significantly reduces the risk of warpage and deformation, improves curing efficiency, ensures uniform three-dimensional heating of PCB flexible boards, prevents material thermal deformation, and enhances positioning accuracy and curing speed.
Smart Images
Figure CN224401773U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PCB board processing technology, specifically to a thermosetting equipment for PCB flexible board processing. Background Technology
[0002] PCB, or Printed Circuit Board, is an important component of the electronics industry. It is a flexible electronic interconnect device with polyimide or polyester film as the substrate. Due to its bendability, light weight, and thinness, it is widely used in smartphones, medical devices and other fields. During the processing, the cover film adhesive or solder resist ink needs to be heat-cured to cause the polymer material to undergo a cross-linking reaction to form a stable structure.
[0003] Traditional thermosetting equipment typically uses single-sided hot air heating. Due to the asymmetrical heat conduction path, this method creates a significant temperature gradient between the upper and lower surfaces of the board. This uneven thermal stress causes warping and deformation of the polyimide substrate, severely affecting the positioning accuracy of subsequent processing. Furthermore, during current fixing processes, the PCB flexible board is generally placed directly inside the thermosetting equipment. During static curing, the uneven turbulent distribution of hot air within the enclosed cavity creates a "thermal shadow effect." The edges of the board become overheated due to airflow scouring, while the center becomes a low-temperature zone due to airflow attenuation. This results in a significant difference in curing degree between the center and edge areas of the PCB flexible board, easily leading to deformation. Therefore, those skilled in the art provide a thermosetting equipment for PCB flexible board processing to solve the problems mentioned in the background. Utility Model Content
[0004] The purpose of this invention is to provide a PCB flexible board processing thermosetting equipment to solve the problems mentioned in the background art.
[0005] This utility model provides the following technical solution: a PCB flexible board processing thermosetting equipment, including a processing box for storing PCB flexible boards, a support frame for supporting the processing box fixedly connected to the lower end of the processing box, a hot air assembly for drying and curing the PCB flexible boards installed inside the processing box, and a placement assembly for fixing the PCB flexible boards installed between the hot air assemblies.
[0006] As a preferred embodiment of the above technical solution, the hot air assembly includes a first support disc, a second support disc, and a hot air dryer. The first support disc is fixedly connected to the bottom of the inner wall of the processing box, and the second support disc is fixedly connected to the top of the inner wall of the processing box. The hot air dryer is fixedly installed on one side of the upper end of the support frame. Both the first and second support discs have air chambers, and each of the two air chambers has a set of air blowing holes on one side of its inner wall. The two sets of air blowing holes are symmetrically arranged. The output end of the hot air dryer is fixedly connected to a connecting pipe. The two output ends of the connecting pipe pass through the processing box and are respectively connected to the two air chambers.
[0007] As a preferred embodiment of the above technical solution, the placement assembly includes a rotating rod and a motor. The rotating rod is rotatably connected to the center of the upper end of the first support disc, and the motor is fixedly installed at the center of the lower end of the processing box. The output shaft of the motor passes through the processing box and the first support disc, and the output end of the motor is fixedly connected to one end of the rotating rod. Multiple clamping components are installed on the upper side wall of the rotating rod.
[0008] As a preferred embodiment of the above technical solution, the clamping assembly includes a connecting rod, which is fixedly connected to the upper part of the side wall of the rotating rod. A movable opening is provided inside the connecting rod, and a bidirectional screw is rotatably connected to the inner wall of the movable opening. Movable blocks are slidably connected to both ends of the inner wall of the movable opening. The bidirectional screw passes through two movable blocks, and the two movable blocks are threadedly connected to the outside of the bidirectional screw. A clamping plate is fixedly connected to the upper end of each of the two movable blocks. The two clamping plates are symmetrically arranged, and each clamping plate includes a horizontal bar and a vertical bar. A knob passes through the end of the connecting rod away from the rotating rod, and one end of the knob is fixedly connected to one end of the bidirectional screw.
[0009] As a preferred embodiment of the above technical solution, two electric push rods are fixedly installed on the upper surface of the support frame, and a baffle plate is fixedly connected to the upper ends of the two electric push rods. An operation port is provided on one side of the processing box, and the baffle plate matches the operation port. Two symmetrically arranged guide rails are fixedly connected to the outer wall of the processing box, and the baffle plate is slidably connected to the outside of the two guide rails.
[0010] As a preferred embodiment of the above technical solution, an exhaust pipe is connected to the upper part of the side wall of the processing box, and a fixed flange is fixedly connected to the end of the exhaust pipe away from the processing box.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] 1. Hot air is delivered to the first and second support discs by a hot air dryer. Since the first and second support discs are set opposite each other, the device can blow air to both ends of the PCB flexible board at the same time, which can achieve more uniform hot air distribution and more efficient heat conduction. This bidirectional airflow can reduce the risk of warping and deformation caused by heating on one side of the PCB flexible board, while accelerating solvent evaporation and resin curing speed, thereby significantly improving curing efficiency.
[0013] 2. The user places the PCB flexible board above the crossbar of the clamping plate, and then turns the knob to make the two clamping plates cooperate to clamp and fix the PCB flexible board. At the same time, during drying, the motor drives the rotating rod to rotate, and by dynamically adjusting the heating angle, the problem of local overheating or uneven curing during static drying is eliminated, so that the PCB flexible board can achieve three-dimensional uniform heating during drying and prevent material thermal deformation. Attached Figure Description
[0014] Figure 1 A schematic diagram of the main structure of a PCB flexible board processing thermosetting equipment;
[0015] Figure 2 This is a structural side view of a PCB flexible board processing thermosetting equipment;
[0016] Figure 3 A rear view of a PCB flexible board processing thermosetting equipment;
[0017] Figure 4 A schematic diagram of the hot air assembly structure of a PCB flexible board processing thermosetting equipment;
[0018] Figure 5 This is a schematic diagram of the placement component structure of a PCB flexible board processing thermosetting equipment.
[0019] Legend:
[0020] 1. Processing box; 2. Support frame; 3. Hot air assembly; 301. First support disc; 302. Second support disc; 303. Hot air dryer; 304. Air chamber; 305. Air blowing hole; 306. Connecting pipe; 4. Placement assembly; 401. Rotating rod; 402. Motor; 403. Connecting rod; 404. Moving port; 405. Bidirectional screw; 406. Moving block; 407. Clamping plate; 408. Knob; 5. Electric push rod; 6. Baffle; 7. Guide rail; 8. Exhaust pipe. Detailed Implementation
[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0022] Please see Figures 1-5This utility model provides a technical solution: a PCB flexible board processing thermosetting equipment, including a processing box 1 for storing PCB flexible boards, a support frame 2 for supporting the processing box 1 fixedly connected to the lower end of the processing box 1, a hot air assembly 3 for drying and curing the PCB flexible boards installed inside the processing box 1, and a placement assembly 4 for fixing the PCB flexible boards installed between the hot air assemblies 3.
[0023] As one implementation method in this embodiment, please refer to Figures 1-4 As shown, the hot air assembly 3 includes a first support disc 301, a second support disc 302, and a hot air dryer 303. The first support disc 301 is fixedly connected to the bottom of the inner wall of the processing box 1, and the second support disc 302 is fixedly connected to the top of the inner wall of the processing box 1. The hot air dryer 303 is fixedly installed on one side of the upper end of the support frame 2. Both the first support disc 301 and the second support disc 302 have air chambers 304. Each of the two air chambers 304 has a set of air blowing holes 305 on one side of its inner wall. The two sets of air blowing holes 305 are symmetrically arranged. The output end of the hot air dryer 303 is fixedly connected to a connecting pipe 306. The two output ends of the connecting pipe 306 pass through the processing box 1 and are respectively connected to the two air chambers 304.
[0024] Furthermore, the hot air dryer 303 starts working, and hot air is delivered to the air chamber 304 through the connecting pipe 306. The hot air is blown out through the air blowing hole 305. Since the first support disk 301 and the second support disk 302 are arranged opposite to each other, the device can blow air to both ends of the PCB flexible board at the same time, which can achieve more uniform hot air distribution and more efficient heat conduction. This bidirectional airflow can reduce the risk of warping and deformation caused by heating on one side of the PCB flexible board, while accelerating solvent evaporation and resin curing speed, thereby significantly improving curing efficiency.
[0025] As one implementation method in this embodiment, please refer to Figure 1 and Figure 5 As shown, the placement component 4 includes a rotating rod 401 and a motor 402. The rotating rod 401 is rotatably connected to the upper center of the first support disc 301, and the motor 402 is fixedly installed at the lower center of the processing box 1. The output shaft of the motor 402 passes through the processing box 1 and the first support disc 301, and the output end of the motor 402 is fixedly connected to one end of the rotating rod 401. Multiple clamping components are installed on the upper side wall of the rotating rod 401.
[0026] Furthermore, during drying, the output end of motor 402 drives the rotating rod 401 to rotate, thereby realizing the rotation of the PCB flexible board. By dynamically adjusting the heating angle, the problem of local overheating or uneven curing during static drying of the PCB flexible board is eliminated, so that the PCB flexible board can achieve three-dimensional uniform heating during drying and prevent material thermal deformation.
[0027] As one implementation method in this embodiment, please refer to Figure 1 and Figure 5 As shown, the clamping assembly includes a connecting rod 403, which is fixedly connected to the upper side wall of the rotating rod 401. A movable opening 404 is provided inside the connecting rod 403. A bidirectional screw 405 is rotatably connected to the inner wall of the movable opening 404. Movable blocks 406 are slidably connected to both ends of the inner wall of the movable opening 404. The bidirectional screw 405 passes through the two movable blocks 406, and the two movable blocks 406 are threadedly connected to the outside of the bidirectional screw 405. A clamping plate 407 is fixedly connected to the upper end of each of the two movable blocks 406. The two clamping plates 407 are symmetrically arranged. The clamping plate 407 includes a horizontal bar and a vertical bar. A knob 408 passes through the end of the connecting rod 403 away from the rotating rod 401. One end of the knob 408 is fixedly connected to one end of the bidirectional screw 405.
[0028] Furthermore, when fixing the PCB flexible board, the PCB flexible board to be processed is placed on the upper end of the horizontal bar of the clamping plate 407. Then, the knob 408 is turned, and the bidirectional screw 405 rotates, which makes the two moving blocks 406 move closer to each other, and thus the two clamping plates 407 move closer to each other. The vertical bars of the two clamping plates 407 cooperate to clamp and fix the PCB flexible board. The operation is convenient and can fix the PCB flexible board at the same time, ensuring the stability of the PCB flexible board and preventing the PCB flexible board from moving when the connecting rod 403 rotates.
[0029] As one implementation method in this embodiment, please refer to Figures 1-2 As shown, two electric push rods 5 are fixedly installed on the upper surface of the support frame 2. The upper ends of the two electric push rods 5 are fixedly connected to a baffle plate 6. An operation port is provided on one side of the processing box 1. The baffle plate 6 matches the operation port. Two symmetrically arranged guide rails 7 are fixedly connected to the outer wall of the processing box 1. The baffle plate 6 is slidably connected to the outside of the two guide rails 7.
[0030] Furthermore, by operating the electric push rod 5, the baffle 6 can slide outside the guide rail 7. When it is necessary to place and pick up the PCB flexible board, the electric push rod 5 can push the baffle 6 up. When it is necessary to dry and cure, the electric push rod 5 can be lowered, and the baffle 6 can cover the operating port, thereby preventing hot air from escaping through the operating port, making the operation convenient.
[0031] As one implementation method in this embodiment, please refer to Figure 1 and Figure 3 As shown, an exhaust pipe 8 is connected to the upper part of the side wall of the processing box 1, and a fixed flange is fixedly connected to the end of the exhaust pipe 8 away from the processing box 1.
[0032] Furthermore, the exhaust pipe 8 can discharge the gas generated during drying from the processing box 1. Subsequently, the user can use the fixed flange to install the exhaust pipe 8 into the air purification device to achieve the purification treatment of the gas generated during drying.
[0033] Working principle: The PCB flexible board to be processed is placed on the upper end of the horizontal bar of the clamping plate 407. Then, the knob 408 is turned, and the bidirectional screw 405 rotates, which brings the two moving blocks 406 closer together, and thus the two clamping plates 407 closer together. The vertical bars of the two clamping plates 407 cooperate to clamp and fix the PCB flexible board. After the PCB flexible board is fixed in sequence, the baffle 6 is lowered to close the operating port. Then, the hot air dryer 303 starts to work. Hot air is delivered to the air chamber 304 through the connecting pipe 306 and blown out through the air blowing hole 305. Due to the first support disc 301 and the second support... With the discs 302 positioned opposite each other, the device can simultaneously blow air onto both the top and bottom ends of the PCB flexible board, achieving a more uniform hot air distribution and more efficient heat conduction. This bidirectional airflow reduces the risk of warping and deformation caused by heating on one side of the PCB flexible board, while accelerating solvent evaporation and resin curing, thereby significantly improving curing efficiency. During drying, the output end of the motor 402 drives the rotating rod 401 to rotate, thereby rotating the PCB flexible board. By dynamically adjusting the heating angle, the problem of local overheating or uneven curing during static drying of the PCB flexible board is eliminated, enabling three-dimensional uniform heating of the PCB flexible board during drying and preventing material thermal deformation.
[0034] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.
Claims
1. A PCB flexible board processing thermosetting equipment, comprising a processing box (1) for storing PCB flexible boards, characterized in that: The lower end of the processing box (1) is fixedly connected to a support frame (2) for supporting the processing box (1). A hot air assembly (3) for drying and curing PCB flexible boards is installed inside the processing box (1). A placement assembly (4) for fixing the PCB flexible boards is installed between the hot air assemblies (3).
2. The PCB flexible board processing thermosetting equipment according to claim 1, characterized in that: The hot air assembly (3) includes a first support disc (301), a second support disc (302), and a hot air dryer (303). The first support disc (301) is fixedly connected to the bottom of the inner wall of the processing box (1), and the second support disc (302) is fixedly connected to the top of the inner wall of the processing box (1). The hot air dryer (303) is fixedly installed on one side of the upper end of the support frame (2). Air chambers (304) are provided in both the first support disc (301) and the second support disc (302). A set of air blowing holes (305) is provided on one side of the inner wall of each of the two air chambers (304). The two sets of air blowing holes (305) are symmetrically arranged. A connecting pipe (306) is fixedly connected to the output end of the hot air dryer (303). The two output ends of the connecting pipe (306) penetrate the processing box (1) and are respectively connected to the two air chambers (304).
3. The PCB flexible board processing thermosetting equipment according to claim 1, characterized in that: The placement component (4) includes a rotating rod (401) and a motor (402). The rotating rod (401) is rotatably connected to the upper center of the first support disc (301). The motor (402) is fixedly installed at the lower center of the processing box (1). The output shaft of the motor (402) passes through the processing box (1) and the first support disc (301), and the output end of the motor (402) is fixedly connected to one end of the rotating rod (401). Multiple clamping components are installed on the upper side wall of the rotating rod (401).
4. The PCB flexible board processing thermosetting equipment according to claim 3, characterized in that: The clamping assembly includes a connecting rod (403), which is fixedly connected to the upper side wall of the rotating rod (401). A movable opening (404) is provided inside the connecting rod (403). A bidirectional screw (405) is rotatably connected to the inner wall of the movable opening (404). Movable blocks (406) are slidably connected to both ends of the inner wall of the movable opening (404). The bidirectional screw (405) passes through the two movable blocks (406), and the two movable blocks (406) are threaded to the outside of the bidirectional screw (405). A clamping plate (407) is fixedly connected to the upper end of each of the two movable blocks (406). The two clamping plates (407) are symmetrically arranged. The clamping plate (407) includes a horizontal bar and a vertical bar. A knob (408) passes through the end of the connecting rod (403) away from the rotating rod (401). One end of the knob (408) is fixedly connected to one end of the bidirectional screw (405).
5. The PCB flexible board processing thermosetting equipment according to claim 1, characterized in that: Two electric push rods (5) are fixedly installed on the upper end of the support frame (2). The upper ends of the two electric push rods (5) are fixedly connected to a baffle plate (6). An operation port is provided on one side of the processing box (1). The baffle plate (6) matches the operation port. Two symmetrically arranged guide rails (7) are fixedly connected to the outer wall of the processing box (1). The baffle plate (6) is slidably connected to the outside of the two guide rails (7).
6. The PCB flexible board processing thermosetting equipment according to claim 1, characterized in that: An exhaust pipe (8) is connected to the upper side wall of the processing box (1), and a fixed flange is fixedly connected to the end of the exhaust pipe (8) away from the processing box (1).