Unwinding and winding device of bendable circuit board

Abstract

The utility model discloses an unwinding and winding device for a bendable circuit board. The unwinding and winding device comprises an unwinding mechanism and a winding mechanism which can be used for conveying the bendable circuit board in a matched mode. The unwinding mechanism comprises an unwinding drum machine and an unwinding guide wheel assembly; the winding mechanism comprises a winding drum machine and a winding guide wheel assembly; the unwinding guide wheel assembly comprises a first unwinding guide wheel, a first unwinding inclined tensioning wheel and a second unwinding guide wheel which are sequentially arranged in a staggered mode backwards. The winding guide wheel assembly comprises a first winding inclined tensioning wheel, a first winding guide wheel and a second winding inclined tensioning wheel which are sequentially arranged in a staggered mode backwards. Two grooves are formed in the outer surface of each unwinding inclined tensioning wheel and the outer surface of each winding inclined tensioning wheel; the two grooves are spirally formed in the direction from the middle of the inclined tensioning wheel to the two ends of the inclined tensioning wheel. According to the utility model, the inclined tensioning wheel with the spirally designed groove is arranged, so that friction force can be increased for the circuit board in the rotation process of the inclined tensioning wheel, and additional grasping points can be provided, so that the bendable circuit board is not easy to slide or shift, and the flatness of the circuit board is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a winding and unwinding device for a bendable circuit board. Background Art

[0002] In response to the increasing demands of consumers for electronic consumer products, how to make electronic products lighter, thinner, shorter and more user-friendly is an important research topic in the future. Bendable circuit boards have the advantages of being easy to bend and low cost. Nowadays, a large number of electronic products developed widely use bendable circuit boards.

[0003] In the manufacturing process of bendable circuit boards, copper or tin is usually plated on the bendable circuit boards. Generally speaking, electroplated copper layers are widely used in the field of electronic products because of their good electrical conductivity, thermal conductivity and ductility. Therefore, in order to thin electronic products, using electroplating equipment to electroplate copper on circuit boards has become an important technology in the manufacturing process.

[0004] In order to electroplate copper, application publication number CN102453939A discloses a machine and a process for roll-to-roll conveying of selectively electroplated flexible circuit boards, which specifically discloses a feeding reel; a receiving reel, wherein a conveying path for vertically conveying a flexible circuit board is formed between the feeding reel and the receiving reel, wherein the flexible circuit board has a plurality of circuits, a shielding layer and two clamping edges, wherein the two clamping edges are respectively located at the upper and lower sides of the flexible circuit board, the shielding layer shields the flexible circuit board and exposes the plurality of circuits and the two clamping edges; an electroplating device, comprising an electroplating tank and a clamp, wherein the clamp is used to clamp the clamping edge of the flexible circuit board and pass through the electroplating tank, wherein the electroplating device is located on the conveying path, wherein the electroplating device selectively plates the plurality of circuits of the flexible circuit board and the exposed portions of the two clamping edges.

[0005] However, it is clear that a plurality of guide wheels for connecting with the bendable circuit board need to be respectively arranged between the above-mentioned feeding reel and receiving reel and the electroplating equipment, so as to guide the bendable circuit board and improve the tension of the bendable circuit board. However, because these guide wheels are basically common guide wheels with curved outer surfaces, and in actual use, when the bendable circuit board is transported and connected with these guide wheels, the curved surface on the guide wheels will make the friction between the bendable circuit board and the guide wheels insufficient, or the gripping point is insufficient, which can easily lead to the circuit board being not stable enough during the movement and being more prone to sliding or deflection, and may also lead to the bendable circuit board not being fully stretched from the middle to the sides, which will lead to the flatness of the bendable circuit board not being high enough, which may eventually affect the processing quality of the product.

[0006] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0007] In view of the problems existing in the above-mentioned prior art, the purpose of the utility model is to provide a reeling and winding device for a bendable circuit board, which respectively arranges bevel wheels with spiral grooves on the reeling and unwinding mechanisms, thereby increasing the friction force on the bendable circuit board and providing additional gripping points during the rotation of the bevel wheels, so that the bendable circuit board is not easy to slide or deflect, and can also help guide and control the moving bendable circuit board to stretch from the middle to both sides, thereby improving the flatness of the bendable circuit board and the processing quality.

[0008] In order to achieve the above purpose, the technical solution of the utility model is:

[0009] A reeling and unwinding device for a bendable circuit board comprises a reeling mechanism and a reeling mechanism which can be used to cooperate in conveying the bendable circuit board; the reeling mechanism comprises a reeling drum and a reeling guide wheel assembly; the reeling mechanism comprises a reeling drum and a reeling guide wheel assembly; the reeling guide wheel assembly comprises a first reeling guide wheel, a first reeling inclined tension wheel and a second reeling guide wheel which are sequentially arranged in an upward and downward dislocation backward; the reeling guide wheel assembly comprises a first reeling inclined tension wheel, a first reeling guide wheel and a second reeling inclined tension wheel which are sequentially arranged in an upward and downward dislocation backward; on the surface of each reeling inclined tension wheel and reeling inclined tension wheel Two grooves are respectively arranged on the surface; the two grooves are respectively arranged spirally from the middle part of the corresponding unwinding inclined tension wheel and the winding inclined tension wheel to the two ends; when the unwinding inclined tension wheel and the winding inclined tension wheel are rotating, the friction between the bendable circuit board and the corresponding unwinding inclined tension wheel and the winding inclined tension wheel can be increased through the grooves, thereby improving the stability of the bendable circuit board, and the spiral arrangement of the grooves can be used to cause the moving bendable circuit board to stretch from the middle part to the two sides, thereby improving the flatness of the bendable circuit board and improving the processing quality of the bendable circuit board. The above arrangement can ensure the flatness of the bendable circuit board during transportation.

[0010] The additional structure of the above technical solution also includes the following solutions:

[0011] Furthermore, the opening width of each groove is 4 mm-9 mm, so as to ensure that the inclined tensioning wheel can play a good pressing role on the bendable circuit board.

[0012] Furthermore, the depth of each groove is 0.1 mm-1.5 mm, so as to ensure that there is enough space for the bendable circuit board to be slightly embedded a certain distance.

[0013] Furthermore, the bottom surface of each groove is in a concave arc shape, so as to ensure that even when the bendable circuit board is embedded in the groove and contacts the bottom surface, it will only bend slightly and will hardly bend.

[0014] Furthermore, each of the grooves spirals from the middle of each unwinding and winding bevel wheel to the end thereof at an angle of 40°-65° to ensure the flatness of the bendable circuit board during the conveying process.

[0015] Furthermore, the inner ends of the two grooves are spaced apart or connected, and the outer ends of the two grooves extend to the end surfaces of the inclined tensioning wheels respectively. The inner ends of the two grooves are spaced apart or connected, and the outer ends of the two grooves on each unwinding inclined tensioning wheel and winding inclined tensioning wheel extend to the end surfaces of the unwinding inclined tensioning wheel and winding inclined tensioning wheel respectively.

[0016] Furthermore, the groove is formed by carving.

[0017] Furthermore, the unwinding guide wheel assembly further includes a second unwinding inclined tension wheel, a third unwinding guide wheel, a third unwinding inclined tension wheel, a fourth unwinding guide wheel and a fourth unwinding inclined tension wheel, which are arranged behind the second unwinding guide wheel and are sequentially staggered up and down; the winding guide wheel assembly further includes a second winding guide wheel, a third winding guide wheel, a third winding inclined tension wheel, a fourth winding guide wheel and a fifth winding guide wheel, which are arranged behind the second winding inclined tension wheel and are sequentially staggered up and down. The above arrangement can ensure the tightness and flatness of the bendable circuit board during the conveying process.

[0018] Furthermore, a matching electroplating mechanism is provided between the unwinding mechanism and the rewinding mechanism.

[0019] The beneficial effects of the utility model are:

[0020] (1) The utility model provides corresponding first unwinding bevel wheels and first winding bevel wheels in the unwinding mechanism and the winding mechanism, so that when each bevel wheel rotates, the groove can be used to increase the friction between the bendable circuit board and the surface of the bevel wheel, which can not only prevent the bendable circuit board from sliding or deflecting during the conveying process, ensuring the smooth conveying of the bendable circuit board, but also reduce the probability of the bendable circuit board being closely attached or adhered to the surface of each bevel wheel, ensuring the smooth movement of the bendable circuit board. (2) In addition, due to the spiral design of the groove, it can provide additional gripping points for the bendable circuit board during its rotation, helping to guide and control the bendable circuit board in motion to stretch from the middle to both sides, that is, improve the flatness of the bendable circuit board, thereby improving the accuracy and efficiency of processing, and also improving the quality of processing. (3) At the same time, due to the spiral design of the groove, the pressure when the bendable circuit board contacts each bevel wheel can be dispersed, thereby reducing the physical damage of the bendable circuit board to the bendable circuit board by the bevel wheel to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the use of the first unwinding guide wheel, the second unwinding guide wheel and the unwinding inclined tensioning wheel of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of a single unwinding inclined tension wheel or a winding inclined tension wheel of the utility model. Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the structure of a single unwinding inclined tension wheel or a winding inclined tension wheel of the utility model. Figure 2 ;

[0025] Figure 5 yes Figure 4 Cross-sectional view along AA in .

[0026] Reference numerals:

[0027] 1. Unwinding mechanism; 11. Unwinding drum machine; 12. First unwinding guide wheel; 13. First unwinding inclined tension wheel; 14. Second unwinding guide wheel; 15. Second unwinding inclined tension wheel; 16. Third unwinding guide wheel; 17. Third unwinding inclined tension wheel; 18. Fourth unwinding guide wheel; 19. Fourth unwinding inclined tension wheel; 2. Rewinding mechanism; 21. Rewinding drum machine; 22. First rewinding inclined tension wheel; 23. First rewinding guide wheel; 24. Second rewinding inclined tension wheel; 25. Second rewinding guide wheel; 26. Third rewinding guide wheel; 27. Third rewinding inclined tension wheel; 28. Fourth rewinding guide wheel; 29. ​​Fifth rewinding guide wheel; 3. Groove; 4. Bearing; 5. Bendable circuit board; 6. Electroplating mechanism. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments. The following description is only exemplary and does not limit the protection scope of the utility model.

[0029] like Figure 1-Figure 5 As shown, a reeling and unwinding device for a bendable circuit board includes an unwinding mechanism 1 and a rewinding mechanism 2 for cooperating in conveying a bendable circuit board 5 .

[0030] The unwinding mechanism 1 includes an unwinding reel 11 and an unwinding guide wheel assembly, while the rewinding mechanism 2 includes a rewinding reel 21 and a rewinding guide wheel assembly. The structures of the unwinding guide wheel assembly and the rewinding guide wheel assembly are analyzed in detail below:

[0031] like Figure 1 As shown, first, the unwinding guide wheel assembly includes a first unwinding guide wheel 12, a first unwinding inclined tensioning wheel 13 and a second unwinding guide wheel 14 which are sequentially staggered upward and downward backward. In the present embodiment, the first unwinding guide wheel 12 and the second unwinding guide wheel 14 are respectively located above the first unwinding inclined tensioning wheel 13; the winding guide wheel assembly includes a first winding inclined tensioning wheel 22, a first winding guide wheel 23 and a second winding inclined tensioning wheel 24 which are sequentially staggered upward and downward backward. In the present embodiment, the first winding guide wheel 23 is respectively located above the first winding inclined tensioning wheel 22 and the second winding inclined tensioning wheel 24.

[0032] For the convenience of description, the above-mentioned first unwinding inclined tensioning wheel 13 and other unwinding inclined tensioning wheels described below may be collectively referred to as unwinding inclined tensioning wheels; similarly, the above-mentioned first winding inclined tensioning wheel 22, the second winding inclined tensioning wheel 24 and other winding inclined tensioning wheels described below may be collectively referred to as winding inclined tensioning wheels.

[0033] like Figure 2-Figure 5 As shown, in order to facilitate the stretching of the bendable circuit board 5, two grooves 3 are respectively provided on the outer surface of each unwinding and winding bevel tensioning wheel and each winding bevel tensioning wheel; the two grooves 3 are respectively spirally provided from the middle of the corresponding unwinding and winding bevel tensioning wheel to the two ends.

[0034] like Figure 1-Figure 5 As shown, during use, that is, during the process of conveying the bendable circuit board 5, when the unwinding bevel wheel and the winding bevel wheel rotate, the friction between the bendable circuit board 5 and the corresponding unwinding bevel wheel and the winding bevel wheel can be increased through the groove 3, thereby improving the stability of the bendable circuit board 5, and the spiral arrangement of the groove 3 can be used to promote the moving bendable circuit board 5 to gradually stretch from the middle to the two sides, thereby improving the flatness of the bendable circuit board 5 and improving the processing quality of the bendable circuit board 5. Specifically, when each unwinding bevel wheel and the winding bevel wheel complete one rotation, that is, it completes one stretching action on the bendable circuit board 5, so when each unwinding bevel wheel and the winding bevel wheel continuously rotate, the bendable circuit board 5 can be continuously stretched.

[0035] like Figure 5 As shown, preferably, the opening width of each groove 3 is 4mm-9mm. The grooves 3 with this width can ensure that each unwinding inclined tension wheel and winding inclined tension wheel can play a good pressing role on the bendable circuit board 5; the depth of each groove 3 is 0.1mm-1.5mm to ensure that there is enough space for the bendable circuit board 5 to be slightly embedded for a certain distance; the bottom surface of each groove 3 is an inwardly concave arc shape to ensure that the bendable circuit board 5 will only be slightly bent and will hardly bend even when it is embedded in the groove 3 and contacts the bottom surface. The settings of the above data are the specific settings that are most suitable for thinner bendable circuit boards 5 obtained by R&D personnel after repeated experiments. These designs enable the unwinding inclined tension wheel and winding inclined tension wheel to stretch the bendable circuit board 5 well during the rotation process.

[0036] like Figure 5 As shown, for the angle setting of the groove 3, each groove 3 spirals from the middle of each unwinding and winding bevel wheel to its end along an angle of 40°-65°. Similarly, through the setting of these angles, the surface of each unwinding and winding bevel wheel can slowly push the bendable circuit board 5 to both sides as it rotates, and it is not easy to cause wrinkles or bends on the bendable circuit board 5 due to too small or too large spiral angle. Therefore, the above design can ensure the flatness of the bendable circuit board 5 during the transportation process to a certain extent. In this embodiment, each groove 3 spirals from the middle of each unwinding and winding bevel wheel to its end along an angle of 50°.

[0037] like Figure 2-Figure 3As shown, preferably, the inner ends of the two grooves 3 can be arranged at intervals or connected, and the outer ends of the two grooves 3 on each unwinding and winding wheel extend to the end surfaces of the unwinding and winding wheel. In this embodiment, the inner ends of the two grooves 3 are arranged at intervals. This design can prevent the two grooves 3 from affecting each other. They will each act on a portion of the corresponding bendable circuit board 5, so as to stretch the bendable circuit board 5 from the middle to both sides.

[0038] Specifically, the groove 3 is formed by engraving. This forming method allows the groove 3 to be formed quickly with very high precision and consistency. In addition, the groove 3 formed by engraving also has the advantages of being not easily worn or deformed.

[0039] like Figure 1 As shown, in order to ensure the tension and flatness of the bendable circuit board 5 during the conveying process, the unwinding guide wheel assembly further includes a second unwinding inclined tension wheel 15, a third unwinding guide wheel 16, a third unwinding inclined tension wheel 17, a fourth unwinding guide wheel 18 and a fourth unwinding inclined tension wheel 19, which are arranged behind the second unwinding guide wheel 14 and are sequentially staggered up and down; the winding guide wheel assembly further includes a second winding guide wheel 25, a third winding guide wheel 26, a third winding inclined tension wheel 27, a fourth winding guide wheel 28 and a fifth winding guide wheel 29, which are arranged behind the second winding inclined tension wheel 24 and are sequentially staggered up and down. Therefore, the tension of the bendable circuit board 5 can be correspondingly improved by the arrangement of the above-mentioned guide wheels, and the functions of the unwinding inclined tension wheels and the winding inclined tension wheels can be used to ensure the flatness of the bendable circuit board 5.

[0040] like Figure 1 As shown, therefore, by setting at least seven bevel tensioning wheels (including unwinding bevel tensioning wheels and winding bevel tensioning wheels) mentioned above, each corresponding position of the bendable circuit board 5 can be stretched, so that the bendable circuit board 5 can continue to maintain a high flatness state, so as to improve the processing quality of the bendable circuit board 5.

[0041] Preferably, the second unwinding guide wheel 14, the third unwinding guide wheel 16, the fourth unwinding guide wheel 18, the first winding guide wheel 23 and the second winding guide wheel 25 can be respectively connected to a driving source (not shown in the figure), so that each of the above-mentioned guide wheels forms an active wheel that can be actively rotated, which can conveniently drive the bendable circuit board 5 to move, and can also reduce the risk of the bendable circuit board 5 breaking during movement to a certain extent.

[0042] In order to facilitate the installation and use of the inclined tension wheel, a stainless steel or titanium bearing 4 is connected to the middle of each inclined tension wheel (including the unwinding inclined tension wheel and the winding inclined tension wheel). In this way, the inclined tension wheel can be installed on the mechanical equipment using the bearing 4.

[0043] like Figure 1 As shown, in this embodiment, a matching electroplating mechanism 6 is arranged between the unwinding mechanism 1 and the rewinding mechanism 2, that is, the unwinding and rewinding mechanism of the utility model is mainly used to transport the bendable circuit board 5 in and out of the electroplating mechanism 6 so that the bendable circuit board 5 can be electroplated in the electroplating mechanism 6.

[0044] Combination Figure 1 , the specific use principle of the utility model is introduced below to facilitate understanding of the utility model:

[0045] First, the bendable circuit board 5 is fed out by the unwinding reel 11, and then connected to the first unwinding guide wheel 12 and the first unwinding inclined tension wheel 13 in sequence, and then connected to the second unwinding guide wheel 14, the second unwinding inclined tension wheel 15, the third unwinding guide wheel 16, the third unwinding inclined tension wheel 17 and the fourth unwinding guide wheel 18 in sequence, and then connected to the fourth unwinding inclined tension wheel 19 before entering the electroplating mechanism 6. Figure 2 As shown, during rotation, the second unwinding guide wheel 15 between the second unwinding guide wheel 14 and the third unwinding guide wheel 16 rotates toward the direction of the first unwinding guide wheel 12, and the other inclined tensioning wheels mentioned above and below will also rotate according to the corresponding rotation direction, which will not be further described here.

[0046] When the bendable circuit board 5 comes out of the electroplating mechanism 6, it is connected to the first winding and tilting wheel 22, and then connected to the first winding guide wheel 23, the second winding and tilting wheel 24, the second winding guide wheel 25, the third winding guide wheel 26 and the third winding and tilting wheel 27 in sequence, and then connected to the fourth winding guide wheel 28 and the fifth winding guide wheel 29 in sequence, and then wound by the material receiving reel 21.

[0047] In summary, the utility model provides corresponding first unwinding bevel wheel 13 and first winding bevel wheel 22 and other bevel wheels in the unwinding mechanism 1 and the winding mechanism 2, so that when each bevel wheel rotates, the groove 3 can be used to increase the friction between the bendable circuit board 5 and the surface of the bevel wheel, which can not only prevent the bendable circuit board 5 from sliding or deflecting during the conveying process, ensuring the smooth conveying of the bendable circuit board 5, but also reduce the probability of the bendable circuit board 5 being tightly attached or adhered to the surface of each bevel wheel, ensuring the bendable circuit board 5 It can move smoothly; in addition, due to the spiral design of the groove 3, it can provide additional gripping points for the bendable circuit board 5 during its rotation, helping to guide and control the moving bendable circuit board 5 to stretch from the middle to both sides, that is, the flatness of the bendable circuit board 5 is improved, thereby improving the accuracy and efficiency of processing, and also improving the quality of processing; at the same time, due to the spiral design of the groove 3, the pressure when the bendable circuit board 5 contacts each bevel tensioning wheel can be dispersed, thereby reducing the physical damage of the bevel tensioning wheel to the bendable circuit board 5 to a certain extent.

[0048] The present invention is not limited to the above-mentioned embodiments. If various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, and if these changes and modifications fall within the claims of the present invention and the scope of equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A reeling and unwinding device for a bendable circuit board, characterized in that: It includes an unwinding mechanism and a rewinding mechanism that can be used to transport the bendable circuit board; The unwinding mechanism includes an unwinding drum and an unwinding guide wheel assembly; the rewinding mechanism includes a rewinding drum and a rewinding guide wheel assembly; The unwinding guide wheel assembly includes a first unwinding guide wheel, a first unwinding inclined tension wheel, and a second unwinding guide wheel, which are sequentially arranged up and down in a staggered manner backward; the winding guide wheel assembly includes a first winding inclined tension wheel, a first winding guide wheel, and a second winding inclined tension wheel, which are sequentially arranged up and down in a staggered manner backward; Two grooves are respectively arranged on the outer surface of each unwinding and winding wheel; the two grooves are respectively arranged spirally from the middle of the corresponding unwinding and winding wheel to the two ends; When the unwinding bevel tensioning wheel and the winding bevel tensioning wheel are rotating, the friction between the bendable circuit board and the corresponding unwinding bevel tensioning wheel and the winding bevel tensioning wheel can be increased through the groove, thereby improving the stability of the bendable circuit board, and the spiral setting of the groove can be utilized to cause the moving bendable circuit board to stretch from the middle to both sides, thereby improving the flatness of the bendable circuit board and improving the processing quality of the bendable circuit board.

2. The unwinding and rewinding device for a bendable circuit board according to claim 1, characterized in that: The opening width of each groove is 4mm-9mm.

3. The unwinding and rewinding device for a bendable circuit board according to claim 1, characterized in that: The depth of each groove is 0.1mm-1.5mm.

4. The unwinding and rewinding device for a bendable circuit board according to claim 1, characterized in that: The bottom surface of each groove is in a concave arc shape.

5. The unwinding and rewinding device for a bendable circuit board according to claim 1, characterized in that: Each groove spirals from the middle of each unwinding and winding inclined tensioning wheel and the winding and winding inclined tensioning wheel toward the end thereof along an angle of 40°-65°.

6. The unwinding and rewinding device for a bendable circuit board according to claim 1, characterized in that: The inner ends of the two grooves are arranged to be spaced apart or connected, and the outer ends of the two grooves on each unwinding and winding wheel extend to the end surfaces of the unwinding and winding wheel respectively.

7. The unwinding and rewinding device for a bendable circuit board according to claim 1, characterized in that: The groove is formed by engraving.

8. The unwinding and rewinding device for a bendable circuit board according to claim 1, characterized in that: The unwinding guide wheel assembly also includes a second unwinding inclined tension wheel, a third unwinding guide wheel, a third unwinding inclined tension wheel, a fourth unwinding guide wheel and a fourth unwinding inclined tension wheel, which are arranged behind the second unwinding guide wheel and are sequentially staggered up and down; The winding guide wheel assembly also includes a second winding guide wheel, a third winding guide wheel, a third winding diagonal tensioning wheel, a fourth winding guide wheel and a fifth winding guide wheel, which are arranged behind the second winding diagonal tensioning wheel and are staggered in sequence up and down.

9. The unwinding and rewinding device for a bendable circuit board according to claim 1, characterized in that: A matching electroplating mechanism is arranged between the unwinding mechanism and the rewinding mechanism.

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