Board pre-lamination structure before circuit board lamination
By designing limiting components and assembly components, the problem of cumbersome alignment of pre-stacked circuit board structures is solved, enabling fast and accurate circuit board stacking, and improving convenience and applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING SHENXINJIE ELECTRONIC TECH CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-12
AI Technical Summary
The existing pre-stacked circuit board structure has a cumbersome alignment process, which affects stacking efficiency and is not very convenient.
The limiting components include heightening right-angle plates and limiting right-angle strips. By assembling the components and adjusting their size, the conductive copper foil, insulating core board, and circuit core board can be quickly aligned.
It improves the convenience and accuracy of the circuit board stacking process, avoids misalignment, and enhances the applicability of the limiting components.
Smart Images
Figure CN224233911U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit board pre-stack technology, specifically a pre-stack structure for circuit boards before lamination. Background Technology
[0002] Before lamination, the conductive layers (copper foil), insulating layers (such as FR-4 core board, prepreg, etc.) and other auxiliary materials of the multilayer PCB need to be physically stacked according to the design requirements. Its core function is to ensure that the key indicators such as electrical performance, mechanical stability and impedance control of the PCB after lamination meet the expectations through precise material arrangement and layer sequence planning. In the process of physically stacking the conductive layers, insulating layers and auxiliary layers of the multilayer PCB, the corresponding pre-stacked board structure is required to limit the stacked conductive layers, insulating layers and auxiliary layers to avoid misalignment of the conductive layers, insulating layers and auxiliary layers during the stacking process.
[0003] In the prior art, a pre-stacked board structure before circuit board lamination, as disclosed in publication number "CN216752288U", uses a heat dissipation groove and calibration workpieces. During pre-stacking, the calibration workpieces are used to insert the movable part into the heat dissipation groove. Rotating the rotating part causes the movable part to move. When the rotating part rotates to form a right angle with the base, the movable part moves out of the heat dissipation groove. Multiple calibration workpieces make the pre-stacked boards aligned. After alignment, the calibration workpieces are removed to facilitate the alignment of the pre-stacked boards.
[0004] However, the above technical solutions and existing technologies have the following drawbacks:
[0005] While this structure can align pre-stacked boards during the stacking process using calibration workpieces, the calibration workpieces require the rotating part to be rotated during calibration. This allows the rotating shaft to move through a worm gear, turbine, connecting shaft, gear, transmission drive, and lead screw to form a right angle for alignment. Furthermore, each of the four calibration workpieces needs to be rotated and adjusted to align the four sides of the stacked structure. This alignment process is cumbersome and lacks convenience, thus affecting the efficiency of circuit board stacking and requiring further improvement in practicality. Utility Model Content
[0006] The purpose of this invention is to provide a pre-stacked board structure before circuit board lamination, so as to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A pre-stacked structure for circuit board lamination includes conductive copper foil, an insulating core board, and a circuit core board. The insulating core board is symmetrically stacked on the upper and lower end faces of the circuit core board. The conductive copper foil is stacked on the outer surface of the insulating core board. A limiting component is provided at the edge of the circuit core board, and the limiting component is used to limit the conductive copper foil, insulating core board, and circuit core board during the stacking process. An assembly component is provided inside the limiting component, and the assembly component is used to adjust the size of the limiting component.
[0009] Preferably, the limiting component includes a height-increasing right-angle piece, a first limiting right-angle strip, a second limiting right-angle strip, a third limiting right-angle strip, and a fourth limiting right-angle strip. The first limiting right-angle strip is attached to the rear end of the circuit core board. The second limiting right-angle strip is placed to the left of the first limiting right-angle strip. The third limiting right-angle strip is placed in front of the second limiting right-angle strip. The fourth limiting right-angle strip is placed to the right of the third limiting right-angle strip. A height-increasing right-angle piece is provided at the corner of the upper end face of the first, second, third, and fourth limiting right-angle strips.
[0010] Preferably, the assembly component includes a first assembly strip and a first insertion cavity. The rear ends of the third and fourth limiting right-angle strips are both connected to the first assembly strip. The front ends of the first and second limiting right-angle strips are both provided with a first insertion cavity, and the first insertion cavity matches the first assembly strip. The upper end of the first assembly strip is provided with a first digital scale line.
[0011] Preferably, the right end faces of the second and third limiting right angle bars are each connected to a second assembly bar, the left end faces of the first and fourth limiting right angle bars are each provided with a second insertion cavity, and the second insertion cavity matches the second assembly bar. The upper end face of the second assembly bar is provided with a second numerical scale line.
[0012] Preferably, the front side of the upper end face of the first limiting right angle strip and the second limiting right angle strip are provided with a first internal thread through hole, and the first internal thread through hole is connected to the first insertion cavity, and a first fixing screw is installed inside the first internal thread through hole.
[0013] Preferably, the upper left side of both the first limiting right angle bar and the fourth limiting right angle bar is provided with a second internal thread through hole, and the second internal thread through hole is connected to the second insertion cavity, and a second fixing screw is installed inside the second internal thread through hole.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. Before the circuit board is pressed, the first, second, third, and fourth limiting right-angle strips are assembled into a frame structure of the required size. This allows the right-angle strips to limit and align the four corners of the conductive copper foil, insulating core board, and circuit core board during the stacking process, preventing misalignment of the conductive copper foil, insulating core board, and circuit core board during stacking. Furthermore, this structure does not require frequent adjustments by the user and is easy to use.
[0016] 2. By loosening the second fixing screw inside the second internal threaded through hole, the lateral spacing between the first and second limiting right angle bars and the lateral spacing between the third and fourth limiting right angle bars can be adjusted. By loosening the first fixing screw inside the first internal threaded through hole, the longitudinal spacing between the first and fourth limiting right angle bars and the longitudinal spacing between the second and third limiting right angle bars can be adjusted, thereby improving the applicability of the limiting component. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0018] Figure 2 This is a structural diagram of the limiting component and the assembly component in this utility model;
[0019] Figure 3 This is a schematic diagram of the explosion state of the limiting component and the assembly component in this utility model;
[0020] Figure 4 for Figure 3 Enlarged view of A in the middle;
[0021] Figure 5 for Figure 3 A magnified view of B in the middle.
[0022] In the diagram: 1. Conductive copper foil sheet; 2. Insulating core board; 3. Circuit core board; 41. Heightening right-angle plate; 42. First limiting right-angle strip; 43. Second limiting right-angle strip; 44. Third limiting right-angle strip; 45. Fourth limiting right-angle strip; 51. First fixing screw; 52. First assembly strip; 521. First numerical scale line; 53. Second assembly strip; 531. Second numerical scale line; 54. Second fixing screw; 55. First insertion cavity; 56. Second insertion cavity; 57. First internal threaded through hole; 58. Second internal threaded through hole. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1-5 This utility model provides a technical solution:
[0025] Example 1:
[0026] A pre-stacked structure before circuit board lamination includes conductive copper foil 1, insulating core board 2, and circuit core board 3. The insulating core board 2 is symmetrically stacked on the upper and lower end faces of the circuit core board 3. The conductive copper foil 1 is stacked on the outer surface of the insulating core board 2. The transverse length of the conductive copper foil 1, the insulating core board 2, and the circuit core board 3 is the same as the longitudinal width. The conductive copper foil 1, the insulating core board 2, and the circuit core board 3 can be stacked to form the required multi-layer circuit board structure. Since the detailed stacking sequence and internal structure of the multi-layer circuit board are relatively mature technologies in the prior art, they will not be described in detail here.
[0027] A limiting component is provided at the edge of the circuit core board 3. The limiting component is used to limit the conductive copper foil 1, insulating core board 2 and circuit core board 3 during the stacking process, so as to prevent the conductive copper foil 1, insulating core board 2 and circuit core board 3 from being misaligned during the stacking process, thereby ensuring the accuracy of subsequent pressing. An assembly component is provided inside the limiting component, and the assembly component is used to adjust the size of the limiting component, so that the limiting component has a wider range of applications.
[0028] The limiting assembly includes a height-increasing right-angle piece 41, a first limiting right-angle strip 42, a second limiting right-angle strip 43, a third limiting right-angle strip 44, and a fourth limiting right-angle strip 45. The first limiting right-angle strip 42 is attached to the rear end of the circuit core board 3. The second limiting right-angle strip 43 is placed to the left of the first limiting right-angle strip 42. The third limiting right-angle strip 44 is placed in front of the second limiting right-angle strip 43. The fourth limiting right-angle strip 45 is placed to the right of the third limiting right-angle strip 44. 5. Each of the upper corners of the first limiting right-angle strip 42, the second limiting right-angle strip 43, the third limiting right-angle strip 44, and the fourth limiting right-angle strip 45 is provided with a heightening right-angle piece 41. There are four sets of heightening right-angle pieces 41, and the four sets of heightening right-angle pieces 41 are of the same specification. The four sets of heightening right-angle pieces 41 are integrated with the first limiting right-angle strip 42, the second limiting right-angle strip 43, the third limiting right-angle strip 44, and the fourth limiting right-angle strip 45.
[0029] The first limiting right-angle strip 42, the second limiting right-angle strip 43, the third limiting right-angle strip 44, the fourth limiting right-angle strip 45, and the raising right-angle piece 41 all have a 90-degree angle at their corners. The first limiting right-angle strip 42, the second limiting right-angle strip 43, the third limiting right-angle strip 44, and the fourth limiting right-angle strip 45 can be assembled into a frame structure. With the help of the raising right-angle piece 41, the conductive copper foil 1, the insulating core board 2, and the circuit core board 3 are limited and aligned during the stacking process, so as to avoid misalignment of the conductive copper foil 1, the insulating core board 2, and the circuit core board 3 during the stacking process.
[0030] Example 2:
[0031] Based on Embodiment 1, in this embodiment, by loosening the second fixing screw 54 inside the second internal threaded through hole 58, the lateral spacing between the first limiting right angle strip 42 and the second limiting right angle strip 43, as well as the lateral spacing between the third limiting right angle strip 44 and the fourth limiting right angle strip 45, can be adjusted. By loosening the first fixing screw 51 inside the first internal threaded through hole 57, the longitudinal spacing between the first limiting right angle strip 42 and the fourth limiting right angle strip 45, as well as the longitudinal spacing between the second limiting right angle strip 43 and the third limiting right angle strip 44, can be adjusted, thereby improving the applicability of the limiting component.
[0032] The assembly component includes a first assembly strip 52 and a first insertion cavity 55. The rear ends of the third limiting right angle strip 44 and the fourth limiting right angle strip 45 are both connected to the first assembly strip 52. There are two sets of first assembly strips 52 connected to each other, and the two sets of first assembly strips 52 are of the same specification. The two sets of first assembly strips 52 are integrated with the third limiting right angle strip 44 and the fourth limiting right angle strip 45 respectively. The front ends of the first limiting right angle strip 42 and the second limiting right angle strip 43 are both provided with first insertion cavities 55, and the first insertion cavities 55 are matched with the first assembly strips 52. The matched first insertion cavities 55 and the first assembly strips 52 not only facilitate the user to assemble and combine the first limiting right angle strip 42 and the fourth limiting right angle strip 45, as well as the second limiting right angle strip 43 and the third limiting right angle strip 44, but also facilitate the user to adjust the distance between them within a certain range.
[0033] The upper surface of the first assembly strip 52 is provided with a first digital scale line 521. The first digital scale line 521 makes it easier for users to observe more intuitively the distance between the first limiting right angle strip 42 and the fourth limiting right angle strip 45, as well as the distance between the second limiting right angle strip 43 and the third limiting right angle strip 44, so as to make accurate adjustment of the distance. The front side of the upper end face of the first limiting right angle strip 42 and the second limiting right angle strip 43 are provided with a first internal thread through hole 57, and the first internal thread through hole 57 is connected to the first insertion cavity 55. The first internal thread through hole 57 is threaded with a first fixing screw 51. The first internal thread through hole 57 and the first fixing screw 51 can fix the first assembly strip 52 inserted into the first insertion cavity 55, so as to prevent the first assembly strip 52 from loosening and slipping during use. The first fixing screw 51 is a wing screw, which makes it easy for users to tighten or loosen it by hand.
[0034] The right ends of the second limiting right angle strip 43 and the third limiting right angle strip 44 are each connected to a second assembly strip 53. There are two sets of second assembly strips 53 connected together, and the two sets of second assembly strips 53 are of the same specification. The two sets of second assembly strips 53 are integral structures with the second limiting right angle strip 43 and the third limiting right angle strip 44, respectively. The left ends of the first limiting right angle strip 42 and the fourth limiting right angle strip 45 are each provided with a second insertion cavity 56, and the second insertion cavity 56 matches the second assembly strip 53. The matching second insertion cavity 56 and the second assembly strip 53 not only facilitate the user to assemble and combine the first limiting right angle strip 42 and the second limiting right angle strip 43, as well as the third limiting right angle strip 44 and the fourth limiting right angle strip 45, but also facilitate the user to adjust the distance between them within a certain range.
[0035] The upper surface of the second assembly strip 53 is provided with a second numerical scale line 531. The second numerical scale line 531 allows the user to more intuitively observe the distance between the first limiting right angle strip 42 and the second limiting right angle strip 43, as well as the distance between the third limiting right angle strip 44 and the fourth limiting right angle strip 45, so as to accurately adjust the distance. The left side of the upper surface of the first limiting right angle strip 42 and the fourth limiting right angle strip 45 are both provided with a second internal thread through hole 58, and the second internal thread through hole 58 is connected to the second insertion cavity 56. The second internal thread through hole 58 is threaded with a second fixing screw 54. The second internal thread through hole 58 and the second fixing screw 54 can fix the second assembly strip 53 inserted into the second insertion cavity 56, so as to prevent the second assembly strip 53 from loosening and slipping during use. The second fixing screw 54 is a wing screw, which makes it easy for the user to tighten or loosen it by hand.
[0036] Working principle: Before using this structure, the user first loosens the first fixing screws 51 inside the first internal threaded through holes 57 on both the left and right sides. At this time, the longitudinal spacing between the first limiting right angle strip 42 and the fourth limiting right angle strip 45, as well as the longitudinal spacing between the second limiting right angle strip 43 and the third limiting right angle strip 44, can be adjusted. During this process, the first insertion cavity 55 will limit the first assembly strip 52 to prevent the first limiting right angle strip 42 and the fourth limiting right angle strip 45, as well as the second limiting right angle strip 43 and the third limiting right angle strip 44, from shifting or shaking during adjustment. After adjusting to the required longitudinal spacing, tighten the first fixing screws 51 on both the left and right sides to fix the first assembly strip 52 in the first insertion cavity 55.
[0037] Then, loosen the second fixing screws 54 inside the second internal threaded through holes 58 on both the front and rear sides. At this point, the lateral spacing between the first limiting right angle strip 42 and the second limiting right angle strip 43, and the lateral spacing between the third limiting right angle strip 44 and the fourth limiting right angle strip 45 can be adjusted. During this process, the second insertion cavity 56 will limit the second assembly strip 53 to prevent offset or shaking between the first limiting right angle strip 42 and the second limiting right angle strip 43, and between the third limiting right angle strip 44 and the fourth limiting right angle strip 45 during adjustment. After adjusting to the required lateral spacing, tighten the second fixing screws 54 in the second internal threaded through holes 58 on both the left and right sides. This will allow the second assembly strip in the second insertion cavity 56 to be positioned. 53 is fixed so that the first limiting right angle strip 42, the second limiting right angle strip 43, the third limiting right angle strip 44 and the fourth limiting right angle strip 45 after assembly can be adapted and aligned to limit and limit conductive copper foil 1, insulating core board 2 and circuit core board 3 of different sizes. This improves the applicability of the limiting component. Moreover, the spacing between the first limiting right angle strip 42, the second limiting right angle strip 43, the third limiting right angle strip 44 and the fourth limiting right angle strip is only needed when limiting conductive copper foil 1, insulating core board 2 and circuit core board 3 of another size. When limiting conductive copper foil 1, insulating core board 2 and circuit core board 3 of the same specification and the same batch, only one adjustment is needed.
[0038] After the spacing between the first limiting right-angle bar 42, the second limiting right-angle bar 43, the third limiting right-angle bar 44, and the fourth limiting right-angle bar 45 is adjusted, the user can place it flat on the external stacking workbench, and then stack the conductive copper foil sheet 1, the insulating core board 2, and the circuit core board 3 inside the first limiting right-angle bar 42, the second limiting right-angle bar 43, the third limiting right-angle bar 44, and the fourth limiting right-angle bar 45 respectively (see reference). Figure 1During this process, the first limiting right-angle strip 42, the second limiting right-angle strip 43, the third limiting right-angle strip 44, the fourth limiting right-angle strip 45, and the raising right-angle piece 41 can limit and align the four corners of the conductive copper foil 1, the insulating core board 2, and the circuit core board 3 during the stacking process, preventing misalignment of the conductive copper foil 1, the insulating core board 2, and the circuit core board 3 during stacking. After stacking, the user only needs to hold the first assembly strip 52 on the left and right sides or the second assembly strip 53 on the front and back sides with both hands to vertically lift the first limiting right-angle strip 42, the second limiting right-angle strip 43, the third limiting right-angle strip 44, and the fourth limiting right-angle strip 45, preventing the first limiting right-angle strip 42, the second limiting right-angle strip 43, the third limiting right-angle strip 44, the fourth limiting right-angle strip 45, and the raising right-angle piece 41 from hindering the subsequent pressing of the stacked conductive copper foil 1, the insulating core board 2, and the circuit core board 3.
[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A pre-stacked board structure before circuit board lamination, comprising conductive copper foil (1), an insulating core board (2), and a circuit core board (3), characterized in that: The circuit core board (3) has an insulating core board (2) stacked symmetrically on its upper and lower ends. The outer surface of the insulating core board (2) is stacked with conductive copper foil (1). A limiting component is provided at the edge of the circuit core board (3), and the limiting component is used to limit the conductive copper foil (1), the insulating core board (2) and the circuit core board (3) during the stacking process. An assembly component is provided inside the limiting component, and the assembly component is used to adjust the size of the limiting component.
2. The pre-stacked board structure before circuit board lamination according to claim 1, characterized in that: The limiting component includes a height-increasing right-angle piece (41), a first limiting right-angle strip (42), a second limiting right-angle strip (43), a third limiting right-angle strip (44), and a fourth limiting right-angle strip (45). The first limiting right-angle strip (42) is attached to the rear end of the circuit core board (3). The second limiting right-angle strip (43) is placed on the left side of the first limiting right-angle strip (42). The third limiting right-angle strip (44) is placed in front of the second limiting right-angle strip (43). The fourth limiting right-angle strip (45) is placed on the right side of the third limiting right-angle strip (44). The height-increasing right-angle piece (41) is provided at the corner of the upper end face of the first limiting right-angle strip (42), the second limiting right-angle strip (43), the third limiting right-angle strip (44), and the fourth limiting right-angle strip (45).
3. The pre-stacked board structure before circuit board lamination according to claim 2, characterized in that: The assembly component includes a first assembly strip (52) and a first insertion cavity (55). The rear ends of the third limiting right angle strip (44) and the fourth limiting right angle strip (45) are both connected to the first assembly strip (52). The front ends of the first limiting right angle strip (42) and the second limiting right angle strip (43) are both provided with the first insertion cavity (55), and the first insertion cavity (55) matches the first assembly strip (52). The upper end of the first assembly strip (52) is provided with a first digital scale line (521).
4. The pre-stacked board structure before circuit board lamination according to claim 2, characterized in that: The right end face of the second limiting right angle bar (43) and the third limiting right angle bar (44) are both connected to the second assembly bar (53). The left end face of the first limiting right angle bar (42) and the fourth limiting right angle bar (45) are both provided with the second insertion cavity (56), and the second insertion cavity (56) matches the second assembly bar (53). The upper end face of the second assembly bar (53) is provided with the second digital scale line (531).
5. The pre-stacked board structure before circuit board lamination according to claim 3, characterized in that: The first limiting right angle bar (42) and the second limiting right angle bar (43) are provided with a first internal thread through hole (57) on the front side of their upper ends, and the first internal thread through hole (57) is connected to the first insertion cavity (55). The first internal thread through hole (57) is threaded with a first fixing screw (51).
6. The pre-stacked board structure before circuit board lamination according to claim 4, characterized in that: The first limiting right angle bar (42) and the fourth limiting right angle bar (45) are both provided with a second internal thread through hole (58) on the left side of the upper end face, and the second internal thread through hole (58) is connected to the second insertion cavity (56). The second internal thread through hole (58) is threaded with a second fixing screw (54).