Tool for cooperatively improving warping and layering processes of rigid-flex printed circuit board

Abstract

The utility model discloses a tool for cooperatively improving the warping and layering process of a rigid-flex printed circuit board. The tool comprises a support frame, an upper shelf, a lower shelf and a locking device, a first guide rod is arranged at one end of the support frame, and a second guide rod is arranged at the other end of the support frame; the upper shelf is fixed at the top ends of the support frame, the first guide rod and the second guide rod; the upper shelf is provided with a plurality of upper spaced raised lines which are sequentially arranged at intervals in the length direction of the upper shelf, upper embedded grooves are formed between any two adjacent upper spaced raised lines at intervals, and the upper embedded grooves penetrate through the lower surface and the front side face of the upper shelf; and the upper embedding groove is used for embedding the upper end of the rigid-flex printed circuit board. According to the utility model, the baking uniformity of the rigid-flex printed circuit board can be improved, and the problem of lamination warping of the rigid-flex printed circuit board and layering at the rigid-flex joint can be obviously improved by cooperatively improving the warping and layering process of the rigid-flex printed circuit board, so that the yield of products is obviously improved.

Description

Technical Field

[0001] The utility model relates to a tooling for improving the warping and delamination process of a rigid-flexible board. Background Art

[0002] As one of the commonly used PCB boards, rigid-flex boards with asymmetric structures are often widely used. In the production process of rigid-flex boards, asymmetric rigid-flex boards have the problem of warping after pressing (the thermal stress of the product is not completely released due to high temperature), which seriously increases the difficulty of post-process production and affects production efficiency. The characteristics of the flexible cavity structure of the rigid-flex board also cause a great risk of delamination at the rigid-flex joint in the conventional pressing process (high temperature pressure relief, bulging at the cavity position leads to delamination), and the defect of delamination at the rigid-flex joint is also common in the industry.

[0003] In order to improve the above technical problems, a process for improving the warping and delamination of rigid-flexible boards has emerged in the industry. However, in the process of improving the warping and delamination of rigid-flexible boards, uneven baking of the rigid-flexible boards and poor baking effects are prone to occur, which affects the improvement of the problems of warping of the rigid-flexible boards during pressing and delamination at the rigid-flex joints, thereby affecting the yield rate of the product.

[0004] With the development of the industry, although some companies have adopted tooling to improve the warping and delamination process of rigid-flexible boards in order to improve the baking uniformity of rigid-flexible boards, the tooling to improve the warping and delamination process of rigid-flexible boards can only be applied to rigid-flexible boards of a predetermined length, resulting in a relatively narrow scope of application and failure to meet industry requirements. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a tooling for improving the warping and delamination process of rigid-flexible boards, which can improve the uniformity of baking the rigid-flexible boards, improve the baking effect, thereby improving the yield rate of the products and expanding its scope of application.

[0006] The purpose of the utility model is achieved by the following technical solutions:

[0007] A tooling for improving the warping and delamination process of a rigid-flexible board, comprising a support frame, an upper layer frame, a lower layer frame, and a locking device; one end of the support frame is provided with a first guide rod, and the other end is provided with a second guide rod; the upper layer frame is fixed to the top of the support frame, the first guide rod and the second guide rod; the upper layer frame is provided with a plurality of upper spacer convex strips arranged in sequence along the length direction of the upper layer frame, and any two adjacent upper spacer convex strips are spaced apart to form upper embedding grooves, and the upper embedding grooves penetrate the lower surface and the front side of the upper layer frame The upper embedding groove is used for embedding the upper end of the rigid-flexible board; the lower shelf is movably mounted on the first guide rod and the second guide rod, and the locking device is used to lock the lower shelf on the first guide rod and the second guide rod; the lower shelf is provided with a plurality of lower spacer ridges corresponding to the plurality of upper spacer ridges respectively, and a lower embedding groove is formed between any two adjacent lower spacer ridges; the lower embedding groove runs through the upper surface and the front side of the lower shelf, and the lower embedding groove is used for embedding the lower end of the rigid-flexible board.

[0008] The upper shelf comprises an upper frame and an upper layer plate, wherein the upper layer plate is fixed below the upper frame, and the plurality of upper spacing convex grooves are formed on the upper layer plate.

[0009] The upper frame comprises two upper fixing rods which are arranged opposite to each other, and the upper layer plate is fixed between the two upper fixing rods.

[0010] The lower shelf comprises a lower frame and a lower layer plate, the lower layer plate is fixed above the lower frame, and the plurality of lower spacing convex strips are formed on the lower layer plate.

[0011] The lower frame comprises two lower fixing rods which are arranged opposite to each other, and the lower layer plate is fixed between the two lower fixing rods.

[0012] A first sleeve is arranged at one end of the lower shelf, and a second sleeve is arranged at the other end. The first sleeve is movably mounted on the first guide rod, and the second sleeve is movably mounted on the second guide rod.

[0013] The locking device comprises a first locking component and a second locking component, wherein the first locking component is used to lock the first sleeve on the first guide rod, and the second locking component is used to lock the second sleeve on the second guide rod.

[0014] The first sleeve includes a first front cylinder shell and a first rear cylinder shell which are arranged in a pair; the first front cylinder shell is provided with a first threaded hole; the first locking component includes a first locking knob which is threadedly connected in the first threaded hole and is used to abut against the first guide rod; the first rear cylinder shell cooperates with the first locking knob to be clamped on the first guide rod.

[0015] The second sleeve includes a second front barrel shell and a second rear barrel shell which are arranged in a pair; a second threaded hole is provided on the second front barrel shell; the second locking component includes a second locking knob which is threadedly connected in the second threaded hole and is used to abut against the second guide rod; the second rear barrel shell and the second locking knob cooperate to be clamped on the second guide rod.

[0016] The support frame comprises a stopper rod which is located between the upper layer frame and the lower layer frame and for the rigid-flexible board to abut against.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model provides a tooling for improving the warping and delamination process of rigid-flexible boards. The tooling adopts a combination of a support frame, an upper layer frame, a lower layer frame, and a locking device, and reasonably arranges the upper layer frame and the lower layer frame, so that multiple rigid-flexible boards can be respectively embedded in the upper embedding groove and the lower embedding groove, and the upper spacing convex strips and the lower spacing convex strips can separate the adjacent rigid-flexible boards, so that the rigid-flexible boards can be heated more comprehensively and evenly, and the uniformity of baking the rigid-flexible boards can be improved, and the baking effect can be improved. In combination with improving the warping and delamination process of rigid-flexible boards, the tooling can effectively improve the problems of warping of the rigid-flexible boards pressed together and delamination at the rigid-flexible joint, so as to improve the yield rate of products and reduce the scrap rate of products. Moreover, by movably installing the lower layer frame on the first guide rod and the second guide rod, and by using the locking device to lock the lower layer frame on the first guide rod and the second guide rod, the tooling can be applicable to rigid-flexible boards of different lengths, and its scope of application can be expanded. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the decomposed state of the utility model;

[0021] Figure 3 It is a schematic diagram of the utility model in another direction of the exploded state;

[0022] 10. Support frame; 11. First guide rod; 12. Second guide rod; 13. Stop rod; 20. Upper shelf; 21. Upper spacing rib; 22. Upper embedding groove; 23. Upper frame; 24. Upper layer board; 25. Upper fixing rod; 30. Lower shelf; 31. Lower spacing rib; 32. Lower embedding groove; 33. Lower frame; 34. Lower layer board; 35. Lower fixing rod; 40. Locking device; 41. First locking component; 42. Second locking component; 51. First sleeve; 52. First front cylinder shell; 53. First rear cylinder shell; 54. First threaded hole; 61. Second sleeve; 62. Second front cylinder shell; 63. Second rear cylinder shell; 64. Second threaded hole. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0024] like Figure 1-3 As shown, a tooling for improving the warping and delamination process of a rigid-flexible board includes a support frame 10, an upper layer frame 20, a lower layer frame 30, and a locking device 40; one end of the support frame 10 is provided with a first guide rod 11, and the other end is provided with a second guide rod 12; the upper layer frame 20 is fixed to the top of the support frame 10, the first guide rod 11 and the second guide rod 12; the upper layer frame 20 is provided with a plurality of upper spacer ridges 21 arranged in sequence along the length direction of the upper layer frame 20, and any two adjacent upper spacer ridges 21 are spaced apart to form an upper embedding groove 22, and the upper embedding groove 22 passes through the lower surface of the upper layer frame 20. The upper embedding groove 22 is used for embedding the upper end of the rigid-flexible board; the lower shelf 30 is movably mounted on the first guide rod 11 and the second guide rod 12, and the locking device 40 is used to lock the lower shelf 30 on the first guide rod 11 and the second guide rod 12; the lower shelf 30 is provided with a plurality of lower spacer ridges 31 corresponding to the plurality of upper spacer ridges 21, and a lower embedding groove 32 is formed between any two adjacent lower spacer ridges 31; the lower embedding groove 32 runs through the upper surface and the front side of the lower shelf 30, and the lower embedding groove 32 is used for embedding the lower end of the rigid-flexible board.

[0025] When in use, the upper end and the lower end of the rigid-flexible board can be aligned with the upper embedding groove 22 and the corresponding lower embedding groove 32 respectively, and then the rigid-flexible board can be pushed in, so that the upper end and the lower end of the rigid-flexible board are respectively embedded in the upper embedding groove 22 and the corresponding lower embedding groove 32. In the above manner, multiple rigid-flexible boards can be correspondingly embedded in the upper embedding groove 22 and the lower embedding groove 32 respectively. Since adjacent rigid-flexible boards can be separated by the upper spacing ridges 21 and the lower spacing ridges 31, it is avoided that the adjacent rigid-flexible boards are close to each other, so that both end surfaces of the rigid-flexible board can be heated more comprehensively and evenly, which can The uniformity of baking of rigid-flexible boards is improved, and the baking effect of rigid-flexible boards is improved. The warping and delamination process of rigid-flexible boards can effectively improve the warping of rigid-flexible boards during pressing and the delamination of rigid-flexible boards, so as to improve the yield rate of products and reduce the scrap rate of products. Moreover, by movably installing the lower shelf 30 on the first guide rod 11 and the second guide rod 12, and locking the lower shelf 30 on the first guide rod 11 and the second guide rod 12 by using the locking device 40, the distance between the upper shelf 20 and the lower shelf 30 can be adjusted, which can be suitable for rigid-flexible boards of different lengths and expand its scope of application.

[0026] The upper shelf 20 includes an upper frame 23 and an upper layer plate 24, the upper layer plate 24 is fixed below the upper frame 23, and the plurality of upper spacer ridges 21 are formed on the upper layer plate 24. By adopting the above structure, the upper shelf 20 can be easily manufactured.

[0027] The upper frame 23 includes two upper fixed rods 25 that are arranged opposite to each other, and the upper layer plate 24 is fixed between the two upper fixed rods 25. Preferably, the upper frame 23 also includes a first upper left connecting rod and a first upper right connecting rod, the first upper left connecting rod is connected between the left ends of the two upper fixed rods 25, the first upper right connecting rod is connected between the right ends of the two upper fixed rods 25, the first upper left connecting rod, the first upper right connecting rod, and the two upper fixed rods 25 form an upper cavity, and the upper layer plate 24 is used to cover the upper cavity, and by adopting the above structure for the upper frame 23, the material used for the upper frame 23 can be reduced, and the weight of the upper frame 23 can be reduced, and the composite of the support frame 10 can be reduced.

[0028] The lower shelf 30 includes a lower frame 33 and a lower layer plate 34. The lower layer plate 34 is fixed above the lower frame 33. The plurality of lower spacing ridges 31 are formed on the lower layer plate 34. By adopting the above structure, the lower shelf 30 can be easily manufactured.

[0029] The lower frame 33 includes two lower fixed rods 35 that are arranged opposite to each other, and the lower layer plate 34 is fixed between the two lower fixed rods 35. Preferably, the lower frame 33 also includes a first lower left connecting rod and a first lower right connecting rod, the first lower left connecting rod is connected between the left ends of the two lower fixed rods 35, the first lower right connecting rod is connected between the right ends of the two lower fixed rods 35, the first lower left connecting rod, the first lower right connecting rod, and the two lower fixed rods 35 form a lower cavity, and the lower layer plate 34 is used to cover the lower cavity, and by adopting the above structure for the lower frame 33, the material used for the lower frame 33 can be reduced, and the weight of the lower frame 33 can be reduced, and the composite of the support frame 10 can be reduced.

[0030] The lower shelf 30 is provided with a first sleeve 51 at one end and a second sleeve 61 at the other end. The first sleeve 51 is movably mounted on the first guide rod 11, and the second sleeve 61 is movably mounted on the second guide rod 12. The above structure is convenient for processing and can facilitate the lower shelf 30 to be movably mounted on the first guide rod 11 and the second guide rod 12.

[0031] The locking device 40 includes a first locking component 41 and a second locking component 42. The first locking component 41 is used to lock the first sleeve 51 on the first guide rod 11, and the second locking component 42 is used to lock the second sleeve 61 on the second guide rod 12. The first sleeve 51 includes a first front barrel shell 52 and a first rear barrel shell 53 that are arranged in a pair; the first front barrel shell 52 is provided with a first threaded hole 54; the first locking component 41 includes a first locking knob that is threadedly connected in the first threaded hole 54 and is used to abut against the first guide rod 11; the first rear barrel shell 53 cooperates with the first locking knob to be clamped on the first guide rod 11. The second sleeve 61 includes a second front cylinder shell 62 and a second rear cylinder shell 63 which are arranged in a matched manner; the second front cylinder shell 62 is provided with a second threaded hole 64; the second locking member 42 includes a second locking knob which is threadedly connected in the second threaded hole 64 and is used to abut against the second guide rod 12; the second rear cylinder shell 63 cooperates with the second locking knob to be clamped on the second guide rod 12. By adopting the above arrangement, by loosening the first locking knob and the second locking knob, the first sleeve 51 and the second sleeve 61 can be moved up and down along the first guide rod 11 and the second guide rod 12 respectively, and by tightening the first locking knob and the second locking knob, the first locking knob and the second locking knob can be used to abut against the first guide rod 11 and the second guide rod 12 respectively, so that the lower shelf 30 can be locked on the support frame 10, which is convenient for locking and can reduce costs.

[0032] The support frame 10 includes a stopper rod 13 located between the upper shelf 20 and the lower shelf 30 and for the rigid-flex board to abut against. When the rigid-flex board is embedded in the upper embedding groove 22 and the lower embedding groove 32, the stopper rod 13 can be used to block the rigid-flex board, thereby improving the stability of the rigid-flex board installation.

[0033] The support frame 10 includes two L-shaped frames arranged opposite to each other, the first guide rod 11 is arranged on one of the L-shaped frames, the second guide rod 12 is arranged on the other L-shaped frame, and the blocking rod 13 is connected between the two L-shaped frames. Specifically, the L-shaped frame includes a bottom rod and a vertical rod, the vertical rod is arranged on the bottom rod, the first guide rod 11 is arranged on one end of the bottom rod of one of the L-shaped frames away from the vertical rod, the second guide rod 12 is arranged on one end of the bottom rod of the other L-shaped frame away from the vertical rod, the blocking rod 13 is connected between the vertical rods of the two L-shaped frames, and a connecting rod is also connected between the bottom rods of the two L-shaped frames. By adopting the above structure for the support frame 10, the material used can be reduced to reduce the manufacturing cost.

[0034] The following steps are adopted to improve the warping and delamination of rigid-flex PCB: pre-process → solder mask → low-temperature baking (60-80℃ / 30Min) → character printing → uncovering → high-temperature baking (150℃ / 90Min) → surface treatment → post-process. Combined with the above-mentioned tooling, the warping of rigid-flex PCB pressing and the delamination of the rigid-flex joint can be significantly improved, so as to significantly improve the yield rate of the product.

[0035] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A tooling for improving the warping and delamination process of rigid-flex boards, characterized by: The invention comprises a support frame, an upper shelf, a lower shelf and a locking device; a first guide rod is arranged at one end of the support frame, and a second guide rod is arranged at the other end; the upper shelf is fixed to the top of the support frame, the first guide rod and the second guide rod; the upper shelf is provided with a plurality of upper spacer convex strips arranged in sequence along the length direction of the upper shelf, and upper embedding grooves are formed between any two adjacent upper spacer convex strips, and the upper embedding grooves penetrate the lower surface and the front side surface of the upper shelf, and the upper embedding grooves are used for embedding the upper end of the rigid-flexible board; the lower shelf is movably mounted on the first guide rod and the second guide rod, and the locking device is used to lock the lower shelf on the first guide rod and the second guide rod; the lower shelf is provided with a plurality of lower spacer ridges corresponding to the plurality of upper spacer ridges respectively, and a lower embedding groove is formed between any two adjacent lower spacer ridges; the lower embedding groove runs through the upper surface and the front side of the lower shelf, and the lower embedding groove is used for embedding the lower end of the rigid-flexible board.

2. The tooling for improving the warping and delamination process of rigid-flex boards according to claim 1, characterized in that: The upper shelf comprises an upper frame and an upper layer plate, wherein the upper layer plate is fixed below the upper frame, and the plurality of upper spacing convex grooves are formed on the upper layer plate.

3. The tooling for improving the warping and delamination process of rigid-flex boards according to claim 2, characterized in that: The upper frame comprises two upper fixing rods which are arranged opposite to each other, and the upper layer plate is fixed between the two upper fixing rods.

4. The tooling for improving the warping and delamination process of rigid-flex boards according to claim 1, characterized in that: The lower shelf comprises a lower frame and a lower layer plate, the lower layer plate is fixed above the lower frame, and the plurality of lower spacing convex strips are formed on the lower layer plate.

5. The tooling for improving the warping and delamination process of rigid-flex boards according to claim 4, characterized in that: The lower frame comprises two lower fixing rods which are arranged opposite to each other, and the lower layer plate is fixed between the two lower fixing rods.

6. The tooling for improving the warping and delamination process of rigid-flex boards according to claim 1, characterized in that: A first sleeve is arranged at one end of the lower shelf, and a second sleeve is arranged at the other end. The first sleeve is movably mounted on the first guide rod, and the second sleeve is movably mounted on the second guide rod.

7. The tooling for improving the warping and delamination process of rigid-flex boards according to claim 6, characterized in that: The locking device comprises a first locking component and a second locking component, wherein the first locking component is used to lock the first sleeve on the first guide rod, and the second locking component is used to lock the second sleeve on the second guide rod.

8. The tooling for improving the warping and delamination process of a rigid-flex board according to claim 7, characterized in that: The first sleeve includes a first front cylinder shell and a first rear cylinder shell which are arranged in a pair; the first front cylinder shell is provided with a first threaded hole; the first locking component includes a first locking knob which is threadedly connected in the first threaded hole and is used to abut against the first guide rod; the first rear cylinder shell cooperates with the first locking knob to be clamped on the first guide rod.

9. The tooling for improving the warping and delamination process of rigid-flex boards according to claim 7, characterized in that: The second sleeve includes a second front barrel shell and a second rear barrel shell which are arranged in a pair; a second threaded hole is provided on the second front barrel shell; the second locking component includes a second locking knob which is threadedly connected in the second threaded hole and is used to abut against the second guide rod; the second rear barrel shell and the second locking knob cooperate to be clamped on the second guide rod.

10. The tooling for improving the warping and delamination process of rigid-flex boards according to claim 1, characterized in that: The support frame comprises a stopper rod which is located between the upper layer frame and the lower layer frame and for the rigid-flexible board to abut against.

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