A circuit board flattening device

Abstract

The application discloses a circuit board flattening device, which comprises a bottom plate, an operation table fixedly connected to the top end of the bottom plate, clamping pieces arranged on the operation table, and flattening pieces arranged on the operation table. In the application, a plurality of clamping rods of the clamping pieces are matched with springs, so that automatic clamping of circuit boards of different sizes and specifications can be realized. Flexible abutting blocks effectively protect the surface of the circuit board and the circuit from being damaged. The synchronous plate and the hydraulic rod are matched to realize the synchronization of a plurality of clamping actions, greatly improving the operation efficiency. The cooperation of the switching rod and the limiting block makes the clamping rod flexible in extension and retraction, facilitates the taking and placing of the circuit board, effectively solves the problem of poor adaptability of the device, and guarantees that the circuit board does not deviate during the flattening process, thereby providing support for accurate flattening.

Description

Technical Field

[0001] This invention relates to the field of circuit board manufacturing equipment technology, specifically a circuit board flattening device. Background Technology

[0002] As the core of electronic components and interconnection, the flatness of printed circuit boards (PCBs) directly determines the assembly yield and long-term reliability of electronic products. Throughout the PCB manufacturing process, processes such as lamination, electroplating, etching, depaneling, and reflow soldering can all cause board warping. Industry statistics show that such deformation leads to scrap and rework losses as high as 10%-15%. Therefore, flattening PCB materials to eliminate internal residual stress and restore flatness is a necessary preliminary step to ensure product quality and smooth subsequent assembly processes. While existing PCB flattening devices can flatten multiple PCBs, the flattened PCBs are of the same specification. When faced with PCBs of different sizes or irregular shapes, the limiting and bearing structures are fixed and lack adjustable adapter components. It is impossible to quickly adjust the clamping boundaries and support points according to the size of the board, which can easily lead to positioning deviations, local suspension or overpressure damage. The flattening effect on non-standard boards is also poor. Summary of the Invention

[0003] The purpose of this invention is to address the problems of existing PCB flattening devices, which, although capable of flattening multiple PCBs, only flattened PCBs of the same specification, suffer from fixed limiting and bearing structures when faced with PCBs of different sizes or irregular shapes. These devices lack adjustable adapter components, making it impossible to quickly adjust the clamping boundaries and support points according to the PCB dimensions, leading to positioning deviations, localized suspension, or overpressure damage. Furthermore, they are less effective at flattening non-standard PCBs. Therefore, this invention provides a PCB flattening device.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a circuit board flattening device, comprising: a base plate, an operating table fixedly connected to the top of the base plate, a clamping component provided on the operating table, and a flattening component provided on the operating table; The flattening component includes a circuit board placement slot provided at the top of the operating table, and multiple sets of the placement slot are arranged in an array at the top of the operating table. The clamping component includes a guide hole formed inside the placement slot along one side of the length direction of the operating table. A receiving slot is formed on the operating table. The receiving slot communicates with the placement slot through the guide hole. A spring is fixedly connected inside the receiving slot on the side away from the placement slot. A limiting plate is fixedly connected to the spring on the side facing the placement slot. A clamping rod is fixedly connected to the limiting plate on the side facing the placement slot. The clamping rod passes through the guide hole and is slidably inserted into the guide hole.

[0005] As a further embodiment of the present invention: a linear actuator is fixedly connected to the top of the base plate, and a hydraulic rod is fixedly connected to the movable end of the linear actuator. Each set of linear actuators is provided with a set of hydraulic rods. A connecting block is fixedly connected to the movable end of the hydraulic rod. A support plate is fixedly connected to the side of the connecting block facing the operating table. The bottom end of the support plate is flush with the bottom end of the connecting block.

[0006] As a further embodiment of the present invention: the operating platform is provided with a lifting groove on the side facing the connecting block. The lifting groove is arranged along the height direction of the operating platform. There are four sets of lifting grooves, symmetrically distributed on both sides of the width direction of the operating platform. The cross-section of the lifting groove is convex. A lifting plate is slidably connected in the lifting groove. Each set of lifting grooves is provided with a set of lifting plates. A rack is fixedly connected to one end of the lifting plate. The bottom end of the lifting plate is flush with the bottom end of the rack. The bottom end of the rack abuts against the top end of the support plate. There are two sets of racks. The two sets of lifting plates on the same side are connected together with one set of racks.

[0007] As a further embodiment of the present invention: a fixed seat is fixedly connected to the top of the connecting block, a flattening roller is provided through the side end of the fixed seat, and the flattening roller is rotatably connected to the fixed seat. A toothed ring is fixedly connected to the outer surface of the flattening roller, and the toothed ring is meshed with a rack. Two sets of toothed rings are provided, and each set of toothed rings is meshed with a set of racks.

[0008] As a further embodiment of the present invention: multiple sets of guide holes are provided, evenly distributed in a straight line on one side of the interior of each set of placement slots. The width of the receiving slot is the same as that of the placement slot, and the length of the receiving slot is greater than that of the placement slot. Multiple sets of receiving slots are provided, arranged in an array. A switching slot is provided at the bottom of the interior of the receiving slot. The switching slot extends through the width direction of the operating table. Multiple sets of switching slots are provided, and each set of switching slots is connected to multiple sets of receiving slots in the same column in the width direction of the operating table.

[0009] As a further embodiment of the present invention: the clamping rod is fixedly connected to an abutment block on one end face facing the placement groove. The abutment block is hemispherical and made of flexible material. The length of the clamping rod is greater than the length of the placement groove.

[0010] As a further embodiment of the present invention: a switching rod is inserted into the sliding groove of the switching slot. The switching rod passes through the switching slot along the width direction of the operating table. A set of switching rods is provided in each set of switching slots. A limit block is fixedly connected to the top of the switching rod. The limit block and the limit plate have the same length and width. The height of the switching rod is the same as the height of the switching slot, so that the limit block at the top of the switching rod is in the receiving slot. The limit block is U-shaped. Multiple sets of limit blocks are provided in each set of receiving slots. In each set of receiving slots, the number and spacing of multiple sets of limit blocks and multiple sets of clamping rods are the same. The width of the limit block is smaller than that of the limit plate. The opening side of the U-shaped limit block faces the switching rod.

[0011] As a further embodiment of the present invention: multiple sets of switching rods pass through one side of the switching slot and are connected to a synchronization plate. Two sets of synchronization plates are provided and symmetrically distributed on both sides of the switching slot. The synchronization plate is L-shaped. A fixing plate is fixedly connected to one end of the operating table. A hydraulic rod II is fixedly connected to one end of the fixing plate. The movable end of the hydraulic rod II faces the synchronization plate, and the hydraulic rod II and the synchronization plate are at the same horizontal height.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, multiple clamping rods of the clamping component cooperate with springs to achieve automatic clamping of circuit boards of different sizes and specifications. The flexible abutment block effectively protects the surface of the circuit board and the circuits from damage. The synchronization plate and the hydraulic rod realize the synchronization of multiple clamping actions, which greatly improves the operating efficiency. The cooperation between the switching rod and the limit block makes the clamping rod extend and retract flexibly, which facilitates the picking and putting of circuit boards. It effectively solves the problem of poor device adaptability, ensures that the circuit board does not shift during the flattening process, and provides support for precise flattening. 2. In this invention, multiple circuit board placement slots of the flattening component enable simultaneous flattening of multiple circuit boards, improving batch production efficiency. The hydraulic rod can flexibly adjust the flattening force and height to adapt to circuit boards of different thicknesses. The rack, toothed ring and flattening roller work together to achieve rolling flattening, so that the circuit board is subjected to uniform force, effectively releasing the internal stress of the circuit board, improving flattening accuracy, avoiding secondary deformation, and meeting the flattening requirements of high-precision circuit boards. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the flattening component in this invention; Figure 3 This is a schematic diagram of the lifting plate in this invention; Figure 4 This is a schematic diagram of the structure of the placement groove in this invention; Figure 5 In this invention Figure 4 A cross-sectional view of the structure at point A; Figure 6 In this invention Figure 5 A schematic diagram of the structure at point B; Figure 7 This is a schematic diagram of the structure of hydraulic rod two in this invention; Figure 8 In this invention Figure 7 A schematic diagram of the structure at point C; Figure 9 In this invention Figure 8 A schematic diagram of the structure at point D.

[0014] In the diagram: 1. Base plate; 2. Operating table; 3. Flattening component; 31. Placement slot; 32. Linear actuator; 33. Hydraulic rod one; 34. Connecting block; 35. Support plate; 36. Lifting slot; 37. Lifting plate; 38. Rack; 39. Fixed seat; 310. Flattening roller; 311. Gear ring; 4. Clamping component; 41. Receiving slot; 42. Switching slot; 43. Guide hole; 44. Spring; 45. Limiting plate; 46. Clamping rod; 47. Limiting block; 48. Switching rod; 49. Fixed plate; 410. Hydraulic rod two; 411. Synchronizing plate. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0017] Reference Figure 1 In this embodiment of the invention, a circuit board flattening device includes: a base plate 1, an operating table 2 fixedly connected to the top of the base plate 1, a clamping member 4 provided on the operating table 2, and a flattening member 3 provided on the operating table 2.

[0018] Reference Figures 2 to 3The flattening component 3 includes a circuit board placement slot 31 located at the top of the operating table 2. Multiple slots 31 are arranged in an array at the top of the operating table 2. A linear actuator 32 is fixedly connected to the top of the base plate 1. The linear actuator 32 utilizes existing technology and is a common mechanical device used to convert rotary motion into linear motion. Its key components include a motor, lead screw, nut, guide rail, and slider. Its core working principle is that the motor drives the lead screw to rotate, and the nut on the lead screw moves along the lead screw axis during rotation, thus converting the rotary motion into linear motion. The nut is connected to the slider, which slides along the guide rail, pushing the load to achieve linear motion. Two sets of linear actuators 32 are symmetrically distributed on both sides of the operating table 2 in the width direction. A hydraulic rod 33 is fixedly connected to the movable end of each linear actuator 32. Each set of linear actuators 32 has a hydraulic rod 33 at its movable end. A connecting block 34 is fixedly connected to the movable end of the hydraulic rod 33. A support plate 35 is fixedly connected to the side of the connecting block 34 facing the operating table 2. The bottom end of plate 35 is flush with the bottom end of connecting block 34. A lifting groove 36 is provided on the side of operating platform 2 facing connecting block 34. The lifting groove 36 is arranged along the height direction of operating platform 2, and four sets of lifting grooves 36 are symmetrically distributed on both sides of the width direction of operating platform 2. The cross-section of the lifting groove 36 is convex. A lifting plate 37 is slidably connected inside the lifting groove 36. Each set of lifting grooves 36 contains a set of lifting plates 37. A rack 38 is fixedly connected to one end of the lifting plate 37. The bottom end of the lifting plate 37 is flush with the bottom end of the rack 38. The bottom end of the rack 38 abuts against the top end of the support plate 35. Two sets of racks 38 are provided. Two sets of lifting plates 37 on the same side are connected to one set of racks 38. The top end of the connecting block 34 is fixedly connected to a fixed seat 39. A flattening roller 310 is provided through the side end of the fixed seat 39 and is rotatably connected to the fixed seat 39. A toothed ring 311 is fixedly connected to the outer surface of the flattening roller 310. The toothed ring 311 is meshed with the rack 38. Two sets of toothed rings 311 are provided, and each set of toothed rings 311 is meshed with one set of racks 38.

[0019] The above solution achieves simultaneous placement of multiple circuit boards through the circuit board placement slot 31 of the flattening component 3, improving flattening efficiency. The linear actuator 32 provides stable power, and the hydraulic rod 33 allows for flexible adjustment of flattening height and force to accommodate circuit boards of different thicknesses. The connecting block 34 and support plate 35 drive the rack 38 to move. The rack 38 meshes with the toothed ring 311 to drive the flattening roller 310 to rotate. At the same time, the lifting plate 37 slides in the lifting slot 36 to ensure the smooth movement of the flattening roller 310, achieving uniform rolling flattening of the circuit board, effectively releasing stress within the board, improving flattening accuracy, and avoiding circuit damage caused by local overpressure.

[0020] Reference Figures 4 to 9The clamping member 4 includes a guide hole 43 formed inside the placement slot 31 along one side of the length direction of the operating table 2. Multiple sets of guide holes 43 are evenly distributed in a straight line inside one side of each placement slot 31. A receiving slot 41 is formed on the operating table 2. The width of the receiving slot 41 is the same as that of the placement slot 31, and the length of the receiving slot 41 is greater than that of the placement slot 31. Multiple sets of receiving slots 41 are arranged in an array. Each set of receiving slots 41 communicates with a set of placement slots 31 through the guide hole 43. A switching slot 42 is formed at the bottom inside the receiving slot 41, extending through the width direction of the operating table 2. Multiple sets of switching slots 42 are formed, and each set of switching slots 42 communicates with multiple sets of receiving slots 41 in the same row as the width direction of the operating table 2. The side of the receiving slot 41 furthest from the placement slot 31 is fixedly connected to... A spring 44 is provided, and a limiting plate 45 is fixedly connected to the side of the spring 44 facing the placement groove 31. A clamping rod 46 is fixedly connected to the side of the limiting plate 45 facing the placement groove 31. The clamping rod 46 passes through the guide hole 43 and is slidably inserted into the guide hole 43. An abutment block is fixedly connected to the end face of the clamping rod 46 facing the placement groove 31. The abutment block is hemispherical and made of flexible material. The length of the clamping rod 46 is greater than the length of the placement groove 31. In the initial state, the spring 44 pushes the clamping rod 46 into the placement groove 31 until the clamping rod 46 abuts against the side away from the receiving groove 41. At this time, there is a gap between the limiting plate 45 and the side of the receiving groove 41 near the placement groove 31, and the gap is greater than the width of the limiting plate 45. A switching rod 48 is inserted into the sliding groove in the switching groove 42. 8. A switching slot 42 extends through the width of the operating table 2. Each switching slot 42 contains a switching rod 48. A limiting block 47 is fixedly connected to the top of the switching rod 48. The limiting block 47 and the limiting plate 45 have the same length and width. The height of the switching rod 48 is the same as the height of the switching slot 42, so that the limiting block 47 at the top of the switching rod 48 is within a receiving slot 41. The limiting block 47 is U-shaped. Multiple sets of limiting blocks 47 are provided in each receiving slot 41. Within each receiving slot 41, the number and spacing of the multiple sets of limiting blocks 47 are the same as the number of clamping rods 46. The width of the limiting block 47 is smaller than that of the limiting plate 45. The opening side of the U-shaped limiting block 47 faces the switching rod 48. In the initial state, the set of limiting blocks 47 in each receiving slot 41 and the receiving slot 41 are aligned along the width of the operating table 2. The side abutment completely separates the limiting block 47 from the limiting plate 45, allowing the spring 44 to push the limiting plate 45 to move. When fixing the circuit board, first push the switching rod 48 along the length of the operating table 2 to move the limiting block 47 synchronously until the limiting block 47 abuts against the guide hole 43 in the receiving groove 41. At this time, the limiting block 47 is within the gap between the limiting plate 45 and the receiving groove 41 near the placement groove 31. Then, push the switching rod 48 along the width of the operating table 2 to align the limiting block 47 with the limiting plate 45. The switching rod 48 enters the inside of the U-shaped limiting block 47. Then, push the switching rod 48 along the length of the operating table 2 away from the guide hole 43 to move the limiting block 47 and the limiting plate 45 synchronously.Spring 44 contracts under force until the abutment block on switching lever 48 is fully retracted into guide hole 43. Finally, circuit board is placed in placement slot 31, and switching lever 48 is pushed along the width of operating table 2. A set of limiting blocks 47 in each set of receiving slots 41 abuts against one side of the receiving slot 41 along the width of operating table 2, so that limiting blocks 47 and limiting plates 45 are completely misaligned, thereby allowing spring 44 to push limiting plates 45 to move. Finally, clamping lever 46 is inserted into placement slot 31 until clamping lever 46 abuts against circuit board, and pushes circuit board against the side of placement slot 31 away from guide hole 43, completing the fixation of circuit board. Multiple sets of switching levers 48 pass through one side of switching slot 42 and are connected to synchronization plate 41. 1. Two sets of synchronization plates 411 are symmetrically distributed on both sides of the switching slot 42. The synchronization plates 411 are L-shaped. A fixed plate 49 is fixedly connected to one end of the operating table 2, and a hydraulic rod 410 is fixedly connected to one end of the fixed plate 49. The movable end of the hydraulic rod 410 faces the synchronization plate 411, and the hydraulic rod 410 and the synchronization plate 411 are at the same horizontal height. When it is necessary to push the clamping rod 46 into the receiving slot 41, the hydraulic rod 410 is activated until the movable end of the hydraulic rod 410 abuts against the synchronization plate 411, thereby pushing the synchronization plate 411 to move. This causes multiple sets of switching rods 48 to move synchronously, driving the limit block 47 to push the limit plate 45 to move, so that the clamping rod 46 on the limit plate 45 moves synchronously.

[0021] The above solution provides a stable sliding trajectory for the clamping rod 46 through the guide hole 43 of the clamping member 4, preventing deviation during clamping. The receiving groove 41 accommodates the spring 44 and the limiting plate 45. With the elastic force of the spring 44, the clamping rod 46 automatically clamps the circuit board without manual adjustment. The extension and retraction of the clamping rod 46 can be flexibly controlled through the cooperation of the switching groove 42, the switching rod 48, and the limiting block 47, facilitating the loading and unloading of the circuit board. The synchronous plate 411 and the hydraulic rod 410 enable the synchronous operation of multiple sets of switching rods 48, improving operational efficiency. The flexible hemispherical abutment block prevents damage to the surface and circuits of the circuit board during clamping, while enhancing clamping stability and adapting to circuit boards of different specifications, thus improving the versatility of the device.

[0022] The working principle of this invention is as follows: In the initial state of the device, the spring 44 pushes the clamping rod 46 into the placement groove 31. The clamping rod 46 abuts against the side of the placement groove 31 away from the receiving groove 41. The limiting block 47 and the limiting plate 45 are completely misaligned. The hydraulic rod 33 is in the extended state. The flattening roller 310 is suspended above the placement groove 31. The lifting plate 37 is in the initial position in the lifting groove 36. When it is necessary to flatten the circuit board, firstly, the synchronous plate 411 is manually pushed to move along the length of the operating table 2. The synchronous plate 411 drives multiple sets of switching rods 48 to move synchronously. The switching rods 48 drive the limiting block 47 at the top to move in the receiving groove 41 until the limiting block 47 abuts against the side of the guide hole 43 in the receiving groove 41. At this time, the limiting block 47 is in the position between the limiting plate 45 and the receiving groove 41. Within the gap range near the placement slot 31 on the side of the receiving slot 41, the synchronization plate 411 is then pushed along the width direction of the operating table 2. The synchronization plate 411 drives the switching rod 48 and the limiting block 47 to move, aligning the limiting block 47 with the limiting plate 45. The switching rod 48 enters the inner side of the U-shaped limiting block 47. Then, the hydraulic rod 410 is activated, and the movable end of the hydraulic rod 410 extends and abuts against the synchronization plate 411. It continues to extend and push the synchronization plate 411 to move along the length direction of the operating table 2. The synchronization plate 411 drives the limiting plate 45 to move through the switching rod 48 and the limiting block 47. The limiting plate 45 compresses the spring 44, simultaneously driving the clamping rod 46 to slide along the guide hole 43 until the abutment block on the clamping rod 46 is completely retracted into the guide hole 43. At this time, the hydraulic rod 410 is closed. After completing the retraction operation of the clamping rod 46, place the circuit boards that need to be flattened into their respective circuit board placement slots 31, ensuring that the circuit boards are placed stably. After placement, push the synchronization plate 411 along the width direction of the operating table 2, so that the limiting block 47 in each set of receiving slots 41 abuts against one side of the receiving slot 41 along the width direction of the operating table 2. The limiting block 47 and the limiting plate 45 are completely misaligned, the spring 44 loses its limiting function, elastically resets, and pushes the limiting plate 45 toward one side of the placement slot 31. The limiting plate 45 drives the clamping rod 46 to extend out of the guide hole 43, and the flexible abutment block on the clamping rod 46 abuts against one side of the circuit board. Continue to push the circuit board until the circuit board abuts against the side of the placement slot 31 away from the guide hole 43. At this time, the spring 44 remains in a slightly compressed state. The circuit board is now stably clamped to prevent it from shifting during the flattening process. Then, hydraulic rod 410 is activated to reset. After the circuit board is fixed, two sets of linear actuators 32 are activated. The linear actuators 32 operate and drive the movable hydraulic rod 33 to retract. Hydraulic rod 33 drives connecting block 34 to move towards the operating table 2. Connecting block 34 drives the bottom support plate 35 to move synchronously. Support plate 35 abuts against the bottom of rack 38 and pushes rack 38 downwards. Rack 38 drives lifting plate 37 at one end to slide downwards along lifting groove 36. Lifting groove 36 has a convex structure to prevent lifting plate 37 from falling off during sliding, ensuring movement stability. As hydraulic rod 33 continues to retract, flattening roller 310 gradually approaches the circuit board in placement groove 31.Until the flattening roller 310 contacts the surface of the circuit board, the flattening force is adjusted by the hydraulic rod 33 according to the thickness and warpage of the circuit board, so that the flattening roller 310 applies uniform pressure to the circuit board. At the same time, because the linear actuator 32 works and drives the hydraulic rod 33 to move synchronously, and because the rack 38 meshes with the toothed ring 311 on the outer surface of the flattening roller 310, the flattening roller 310 rotates continuously during the movement, rolling and flattening the circuit board. The rolling and flattening method can make the circuit board evenly stressed, effectively release residual stress in the board, correct the warpage deformation of the circuit board, and avoid local over-stressing. To prevent circuit breakage or interlayer peeling caused by pressure, during the flattening process, multiple circuit boards in the placement slots 31 are simultaneously flattened, significantly improving flattening efficiency and adapting to mass production needs. After the flattening work is completed, the linear actuator 32 is turned off, and the hydraulic rod 33 extends and resets, driving the connecting block 34, support plate 35, and rack 38 to move upward. At the same time, the lifting plate 37 slides upward and resets along the lifting slot 36, and the flattening roller 310 moves away from the circuit board and returns to the initial hovering position. Subsequently, the above-mentioned operation of retracting the clamping rod 46 is repeated, causing the abutment block on the clamping rod 46 to retract into the guide hole 43, releasing the circuit board. After clamping the circuit board, the operator can remove the flattened circuit board from the placement slot 31, completing one circuit board flattening operation. If continuous flattening is required, the above steps can be repeated to achieve efficient and precise flattening of multiple batches and specifications of circuit boards. Through the cooperation of multiple sets of clamping rods 46 and springs 44 of the clamping component 4, automatic clamping of circuit boards of different sizes and specifications can be achieved. The flexible abutment block effectively protects the surface of the circuit board and the circuit from damage. The synchronization plate 411 and the hydraulic rod 410 realize the synchronization of multiple sets of clamping actions, greatly improving the operating efficiency. The cooperation of the switching rod 48 and the limit block 47 ensures that the clamping... The telescopic rod 46 is flexible, facilitating the placement and removal of circuit boards and effectively solving the problem of poor device adaptability. It ensures that the circuit boards do not shift during flattening, providing support for precise flattening. Multiple circuit board placement slots 31 in the flattening component 3 enable simultaneous flattening of multiple circuit boards, improving batch production efficiency. The hydraulic rod 33 can flexibly adjust the flattening force and height to adapt to circuit boards of different thicknesses. The rack 38, toothed ring 311, and flattening roller 310 cooperate to achieve rolling flattening, ensuring uniform force on the circuit boards, effectively releasing internal stress, improving flattening accuracy, avoiding secondary deformation, and meeting the flattening requirements of high-precision circuit boards.

[0023] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A circuit board flattening device, comprising: The base plate (1) is characterized in that an operating table (2) is fixedly connected to the top of the base plate (1), a clamping member (4) is provided on the operating table (2), and a flattening member (3) is provided on the operating table (2). The flattening component (3) includes a circuit board placement slot (31) opened at the top of the operating table (2). The placement slot (31) is provided in multiple sets and is arranged in an array at the top of the operating table (2). The clamping member (4) includes a guide hole (43) opened inside the placement slot (31) and along one side of the length direction of the operating table (2). The operating table (2) is provided with a receiving slot (41). The receiving slot (41) is connected to the placement slot (31) through the guide hole (43). A spring (44) is fixedly connected inside the receiving slot (41) on the side away from the placement slot (31). A limit plate (45) is fixedly connected to the side of the spring (44) facing the placement slot (31). A clamping rod (46) is fixedly connected to the side of the limit plate (45) facing the placement slot (31). The clamping rod (46) passes through the guide hole (43) and is slidably inserted into the guide hole (43).

2. The circuit board flattening device according to claim 1, characterized in that, A linear actuator (32) is fixedly connected to the top of the base plate (1). A hydraulic rod (33) is fixedly connected to the movable end of the linear actuator (32). Each set of linear actuators (32) is provided with a set of hydraulic rods (33) at the movable end. A connecting block (34) is fixedly connected to the movable end of the hydraulic rod (33). A support plate (35) is fixedly connected to the side of the connecting block (34) facing the operating table (2). The bottom end of the support plate (35) is flush with the bottom end of the connecting block (34).

3. The circuit board flattening device according to claim 2, characterized in that, The operating platform (2) has a lifting groove (36) on the side facing the connecting block (34). The lifting groove (36) is set along the height direction of the operating platform (2). There are four sets of lifting grooves (36), which are symmetrically distributed on both sides of the width direction of the operating platform (2). The cross section of the lifting groove (36) is convex. A lifting plate (37) is slidably connected in the lifting groove (36). Each set of lifting grooves (36) has a set of lifting plates (37). A rack (38) is fixedly connected to one end of the lifting plate (37). The bottom end of the lifting plate (37) is flush with the bottom end of the rack (38). The bottom end of the rack (38) abuts against the top of the support plate (35). There are two sets of racks (38). The two sets of lifting plates (37) on the same side are connected together with one set of racks (38).

4. The circuit board flattening device according to claim 3, characterized in that, The top of the connecting block (34) is fixedly connected to a fixed seat (39). A flattening roller (310) is provided through the side end of the fixed seat (39), and the flattening roller (310) is rotatably connected to the fixed seat (39). A toothed ring (311) is fixedly connected to the outer surface of the flattening roller (310). The toothed ring (311) is meshed with a rack (38). There are two sets of toothed rings (311), and each set of toothed rings (311) is meshed with a set of racks (38).

5. A circuit board flattening device according to claim 4, characterized in that, The guide holes (43) are provided in multiple sets and are evenly distributed in a straight line on one side of the interior of each set of placement slots (31). The width of the receiving slot (41) is the same as that of the placement slot (31). The length of the receiving slot (41) is greater than that of the placement slot (31). The receiving slots (41) are provided in multiple sets and are arranged in an array. A switching slot (42) is opened at the bottom of the interior of the receiving slot (41). The switching slot (42) penetrates through the width direction of the operating table (2). The switching slots (42) are provided in multiple sets, and each set of switching slots (42) is connected to multiple sets of receiving slots (41) in the same column as the width direction of the operating table (2).

6. The circuit board flattening device according to claim 5, characterized in that, The clamping rod (46) is fixedly connected to an abutment block on the side facing the placement groove (31). The abutment block is hemispherical and made of flexible material. The length of the clamping rod (46) is greater than the length of the placement groove (31).

7. A circuit board flattening device according to claim 6, characterized in that, A switching rod (48) is inserted into the sliding groove of the switching slot (42). The switching rod (48) passes through the switching slot (42) along the width direction of the operating table (2). Each set of switching rods (48) is provided in each set of switching slots (42). A limit block (47) is fixedly connected to the top of the switching rod (48). The limit block (47) and the limit plate (45) have the same length and width. The height of the switching rod (48) is the same as the height of the switching slot (42), so that the switching... The limiting block (47) at the top of the rod (48) is located in the receiving groove (41). The limiting block (47) is U-shaped. Multiple sets of limiting blocks (47) are provided in each set of receiving grooves (41). In each set of receiving grooves (41), the number and spacing of multiple sets of limiting blocks (47) are the same as those of multiple sets of clamping rods (46). The width of the limiting block (47) is smaller than that of the limiting plate (45). The opening side of the U-shaped limiting block (47) faces the switching rod (48).

8. A circuit board flattening device according to claim 7, characterized in that, Multiple sets of switching rods (48) pass through one side of the switching slot (42) and are connected to a synchronization plate (411). There are two sets of synchronization plates (411), which are symmetrically distributed on both sides of the switching slot (42). The synchronization plate (411) is L-shaped. One end of the operating table (2) is fixedly connected to a fixing plate (49). One end of the fixing plate (49) is fixedly connected to a hydraulic rod (410). The movable end of the hydraulic rod (410) faces the synchronization plate (411). The hydraulic rod (410) and the synchronization plate (411) are at the same horizontal height.

Images