Cutting mechanism for flexible flat cable (FFC)

Abstract

The utility model discloses an FFC (flexible flat cable) cutting mechanism which comprises an operating frame, a mounting frame is slidably mounted on the operating frame, two groups of symmetrically distributed mounting rods are fixedly mounted on the mounting frame, and two groups of symmetrically distributed first push rods are slidably mounted in the two groups of mounting rods. Second push rods are slidably mounted in the two first push rods correspondingly, a two-way screw is rotatably mounted in the mounting rod, screw tubes are rotatably mounted in the two first push rods correspondingly, and a plurality of adjusting frames distributed at equal intervals are arranged on the mounting frame. The two-way screw and the solenoid are matched with the first push rod and the second push rod to achieve synchronous inward or outward pushing of the two sets of adjusting frames on the two sides, and the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod which are distributed between the adjacent adjusting frames in a crossed mode are matched to achieve equidistant interval adjustment of the multiple sets of adjusting frames. And therefore, the synchronous adjustment of the distance between the multiple groups of cutting knives is realized.

Description

Technical Field

[0001] This utility model relates to the field of FFC cable cutting technology, specifically to a cutting mechanism for FFC cables. Background Technology

[0002] FFC cable, also known as Flexible Flat Cable, allows for flexible selection of the number and spacing of wires, making wiring more convenient, greatly reducing the size of electronic products, reducing production costs, and improving production efficiency. It is best suited for data transmission cables between moving parts and motherboards, between PCBs, and in miniaturized electrical equipment.

[0003] A search revealed that Chinese Patent Publication No. CN216096162U discloses a cutting mechanism for FFC cables. This utility model uses the rotation of a rotating rod in the cutting mechanism to select the cutting length while simultaneously winding the cable. After cutting, the cable can be directly removed, saving the time consumed in collecting the cut FFC cable.

[0004] This invention can avoid the tilting of the cut or the mess after cutting of the ribbon cable. However, in actual use, the cutting efficiency of the ribbon cable is low. Only one set of ribbon cables can be divided at a time. Moreover, one end of the ribbon cable needs to be fixed before each cutting, which makes the operation complicated. Utility Model Content

[0005] The purpose of this invention is to provide a cutting mechanism for FFC cables to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an FFC cable cutting mechanism, comprising an operating frame, on which an mounting frame is slidably mounted, and on which two sets of symmetrically distributed mounting rods are fixedly mounted, each of the two sets of mounting rods having two sets of symmetrically distributed first push rods slidably mounted, each of the two sets of first push rods having a second push rod slidably mounted, each of the mounting rods having a bidirectional screw rotatably mounted, each of the two sets of first push rods having a solenoid rotatably mounted, the mounting frame having multiple sets of equidistantly distributed adjusting frames, the ends of the two sets of second push rods away from the mounting rods being fixedly connected to the two sets of adjusting frames located on both sides, each of the two sets of adjusting frames having two sets of intersecting first and second connecting rods, each of the two sets of adjusting frames having two sets of intersecting third and fourth connecting rods, and each of the two sets of adjusting frames having two sets of symmetrically distributed pressure frames slidably mounted.

[0007] As a further preferred embodiment of this technical solution, a cylinder is fixedly installed on the operating frame, the mounting frame is fixedly connected to the output end of the cylinder piston rod, a drive rod is rotatably installed on the mounting frame, and a cutting blade is rotatably installed on the lower end of multiple sets of adjusting frames. The cutting blade is provided with a sliding groove, and the drive rod is slidably engaged with the cutting blade through the sliding groove.

[0008] As a further preferred embodiment of this technical solution, the lower ends of the first connecting rod and the second connecting rod are rotatably connected by a rotating shaft, and the upper ends of both the first connecting rod and the second connecting rod are rotatably mounted with sliders. The upper ends of both the first connecting rod and the second connecting rod are slidably connected to the corresponding adjusting frame through the sliders.

[0009] As a further preferred embodiment of this technical solution, the top ends of the third and fourth links are rotatably connected by a pivot, the lower ends of the third and fourth links are rotatably connected to corresponding adjusting rods by pivots, and the third and fourth links are rotatably connected to the first and second links by pivots, respectively.

[0010] As a further preferred embodiment of this technical solution, a first bevel gear is sleeved on the bidirectional screw, and a second bevel gear is rotatably installed inside the mounting rod. The second bevel gear meshes with the first bevel gear. Both ends of the bidirectional screw pass through two sets of first push rods and are threadedly connected to the two sets of first push rods respectively. The screw tube passes through the corresponding second push rod and is threadedly connected to the second push rod.

[0011] As a further preferred embodiment of this technical solution, the bidirectional screw is provided with two sets of symmetrically distributed slots, and each set of the screw tubes is provided with two sets of symmetrically distributed locking blocks. The locking blocks are correspondingly arranged with the slots, and the screw tubes are slidably sleeved with the bidirectional screw through the locking blocks.

[0012] As a further preferred embodiment of this technical solution, the two sets of pressure frames are distributed on both sides of the cutting blade. A slide rod is fixedly installed inside the adjusting frame. Two sets of symmetrically distributed springs are sleeved on the slide rod. The pressure frame and the slide rod are slidably sleeved. The two ends of the spring are fixedly connected to the corresponding pressure frame and the adjusting frame, respectively. A stop block is fixedly installed at the top of the pressure frame. A limit switch is fixedly installed inside the adjusting frame. The stop block and the limit switch are correspondingly arranged.

[0013] This utility model provides a cutting mechanism for FFC cables, which has the following advantages:

[0014] (1) This utility model uses a bidirectional screw and a helical tube to work with a first push rod and a second push rod to push the two sets of adjustment frames inward or outward synchronously. It also uses a first and second connecting rod, a third connecting rod and a fourth connecting rod that are cross-distributed between adjacent adjustment frames to adjust the equidistant spacing of multiple sets of adjustment frames. This allows for the synchronous adjustment of the spacing between multiple sets of cutting blades. As a result, the multiple sets of equidistantly distributed cutting blades in the cutting mechanism can achieve single-time multi-segment cutting of FFC cables during synchronous rotation, effectively improving work efficiency.

[0015] (2) The present invention uses two sets of pressure frames symmetrically distributed on both sides of the cutting blade. When the adjusting frame moves the cutting blade downward, the two sets of pressure frames first press on the FFC cable to complete the positioning of the FFC cable and avoid the twisting and displacement of the FFC cable during the cutting process, thereby affecting the neatness of the FFC cable cutting. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the mounting bracket of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the adjustment frame of this utility model;

[0019] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at point A;

[0020] Figure 5 This is a schematic diagram of the structure of the pressure frame of this utility model;

[0021] In the diagram: 1. Operating frame; 2. Mounting frame; 3. Cylinder; 4. Drive rod; 5. Mounting rod; 6. First push rod; 7. Second push rod; 8. Adjusting frame; 9. First connecting rod; 10. Second connecting rod; 11. Slider; 12. Third connecting rod; 13. Fourth connecting rod; 14. Bidirectional screw; 15. Screw tube; 16. Slot; 17. Locking block; 18. First bevel gear; 19. Second bevel gear; 20. Cutting blade; 21. Slide groove; 22. Pressure frame; 23. Slide rod; 24. Spring; 25. Abutment block; 26. Limit switch. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model provides a technical solution: such as Figures 1-4As shown, in this embodiment, an FFC cable cutting mechanism includes an operating frame 1, a mounting frame 2 slidably mounted on the operating frame 1, two sets of symmetrically distributed mounting rods 5 fixedly mounted on the mounting frame 2, two sets of symmetrically distributed first push rods 6 slidably mounted in each of the two sets of mounting rods 5, two sets of second push rods 7 slidably mounted in each of the two sets of first push rods 6, a bidirectional screw 14 rotatably mounted in each of the mounting rods 5, and a solenoid 15 rotatably mounted in each of the two sets of first push rods 6. The mounting frame 2 is provided with multiple sets of equidistantly distributed adjusting frames 8. The ends of the two sets of second push rods 7 away from the mounting rods 5 are respectively fixedly connected to the two sets of adjusting frames 8 located on both sides. Two sets of intersecting first connecting rods 9 and second connecting rods 10 are provided between adjacent sets of adjusting frames 8. Each of the frames 8 has two sets of intersecting third connecting rods 12 and fourth connecting rods 13. Two sets of symmetrically distributed pressure frames 22 are slidably mounted on the adjusting frame 8. A cylinder 3 is fixedly mounted on the operating frame 1. The mounting frame 2 is fixedly connected to the output end of the piston rod of the cylinder 3. A drive rod 4 is rotatably mounted on the mounting frame 2. Cutting blades 20 are rotatably mounted on the lower ends of multiple adjusting frames 8. A sliding groove 21 is provided on the cutting blade 20. The drive rod 4 is slidably engaged with the cutting blade 20 through the sliding groove 21. The lower ends of the first connecting rod 9 and the second connecting rod 10 are rotatably connected via a rotating shaft. A slider 11 is rotatably mounted on the upper ends of both the first connecting rod 9 and the second connecting rod 10. The upper ends of both the first connecting rod 9 and the second connecting rod 10 are slidably connected to the corresponding adjusting frame 8 via the slider 11. The third connecting rod... The top ends of the third link 12 and the fourth link 13 are rotatably connected via a rotating shaft. The lower ends of the third link 12 and the fourth link 13 are rotatably connected to the corresponding adjusting rods via rotating shafts. The third link 12 and the fourth link 13 are rotatably connected to the first link 9 and the second link 10 via rotating shafts, respectively. A first bevel gear 18 is sleeved on the bidirectional screw 14. A second bevel gear 19 is rotatably installed inside the mounting rod 5. The second bevel gear 19 meshes with the first bevel gear 18. The two ends of the bidirectional screw 14 pass through two sets of first push rods 6 and are threadedly connected to the two sets of first push rods 6, respectively. The screw tube 15 passes through the corresponding second push rod 7 and is threadedly connected to the second push rod 7. During the rotation of the second bevel gear 19 driven by the motor inside the mounting rod 5, it meshes with the second push rod 19. The first bevel gear 18 drives the bidirectional screw 14 to rotate synchronously. Under the limiting action of the mounting rod 5, the two sets of first push rods 6 slide synchronously inward or outward within the mounting rod 5. The bidirectional screw 14 has two sets of symmetrically distributed slots 16. Each of the two sets of screw tubes 15 has two sets of symmetrically distributed locking blocks 17, which correspond to the slots 16. The screw tubes 15 are slidably connected to the bidirectional screw 14 through the locking blocks 17. Under the limiting action of the two sets of locking blocks 17 and slots 16, the two sets of screw tubes 15 rotate synchronously with the bidirectional screw 14. This, in turn, under the limiting action of the second push rod 7, causes the two sets of second push rods 7 to slide synchronously inward or outward, and drives the two sets of adjusting brackets 8 fixedly connected to the second push rods 7 on both sides to slide synchronously inward or outward.The first connecting rod 9, the second connecting rod 10, the third connecting rod 12, and the fourth connecting rod 13, which are intersecting between adjacent sets of adjusting frames 8, synchronously adjust the spacing between multiple sets of adjusting frames 8, thereby achieving equidistant changes in the spacing between multiple sets of cutting blades 20. When the cylinder 3 drives the mounting frame 2 and the lower cutting blades 20 to move downwards, the drive rod 4 inside the mounting frame 2 is activated. The drive rod 4, which is slidably engaged with multiple sets of cutting blades 20 through the sliding groove 21, drives multiple sets of cutting blades 20 to rotate synchronously, completing the cutting of the FFC cable.

[0024] like Figure 5 As shown, two sets of pressure frames 22 are distributed on both sides of the cutting blade 20. A slide rod 23 is fixedly installed inside the adjusting frame 8. Two sets of symmetrically distributed springs 24 are sleeved on the slide rod 23. The pressure frame 22 and the slide rod 23 are slidably sleeved. The two ends of the springs 24 are fixedly connected to the corresponding pressure frame 22 and the adjusting frame 8, respectively. A stop block 25 is fixedly installed at the top of the pressure frame 22. A limit switch 26 is fixedly installed inside the adjusting frame 8. The stop block 25 and the limit switch 26 are correspondingly set. During the process of the adjusting frame 8 driving the multiple sets of cutting blades 20 to move downward, the two sides of the cutting blade 20... The pressure frame 22 first contacts the surface of the FFC cable. As the adjusting frame 8 continues to move downward, the pressure frame 22, which is pressed against the surface of the FFC cable, slides upward in the adjusting frame 8 and applies corresponding compression or stretching to the spring 24 until the stop block 25 contacts the limit switch 26. The limit switch 26 transmits a signal to the control unit to start the motor and drive the drive rod 4 to rotate, thereby driving the cutter 20 to complete the cable cutting and preventing the cutter 20 from spinning idly. At the same time, the pressure frame 22 is used to position the cable and prevent the cable from shifting during the cutting process.

[0025] This utility model provides a cutting mechanism for FFC cables. The specific working principle is as follows: During the rotation of the second bevel gear 19 driven by the motor inside the mounting rod 5, the first bevel gear 18 meshing with it drives the bidirectional screw 14 to rotate synchronously. Under the limiting action of the mounting rod 5, the two sets of first push rods 6 slide synchronously inward or outward within the mounting rod 5. Under the limiting action of the two sets of locking blocks 17 and locking slots 16, the two sets of screw tubes 15 rotate synchronously with the bidirectional screw 14. Under the limiting action of the second push rod 7, the two sets of second push rods 7 slide synchronously inward or outward, driving the two sets of adjusting frames 8 fixedly connected to the second push rods 7 on both sides to slide synchronously inward or outward. The first connecting rod 9, the second connecting rod 10, the third connecting rod 12, and the fourth connecting rod 13, which are intersecting between adjacent sets of adjusting frames 8, achieve synchronous adjustment of the spacing between multiple sets of adjusting frames 8, thereby realizing the synchronous adjustment of the spacing between multiple sets of cutting blades 20. The equidistant change in spacing is achieved when the cylinder 3 drives the mounting bracket 2 and the lower cutting blade 20 to move downwards, activating the drive rod 4 inside the mounting bracket 2. The drive rod 4, which is slidably engaged with multiple sets of cutting blades 20 through the slide groove 21, drives multiple sets of cutting blades 20 to rotate synchronously, completing the cutting of the FFC cable. During the process of the adjusting frame 8 driving multiple sets of cutting blades 20 to move downwards, the pressure brackets 22 on both sides of the cutting blade 20 first contact the surface of the FFC cable. As the adjusting frame 8 continues to move downwards, the pressure brackets 22 that are pressed against the surface of the FFC cable slide upwards in the adjusting frame 8, and correspondingly compress or stretch the spring 24 until the stop block 25 contacts the limit switch 26. The limit switch 26 transmits a signal to the control unit to start the motor to drive the drive rod 4 to rotate, driving the cutting blade 20 to complete the cable cutting, avoiding the cutting blade 20 from spinning idly. At the same time, the pressure brackets 22 are used to position the cable, preventing the cable from shifting during the cutting process.

[0026] 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 cutting mechanism for FFC cables, comprising an operating frame (1), characterized in that: A mounting frame (2) is slidably mounted on the operating frame (1). Two sets of symmetrically distributed mounting rods (5) are fixedly mounted on the mounting frame (2). Two sets of symmetrically distributed first push rods (6) are slidably mounted in each of the two sets of mounting rods (5). A second push rod (7) is slidably mounted in each of the two sets of first push rods (6). A bidirectional screw (14) is rotatably mounted in each of the mounting rods (5). A screw tube (15) is rotatably mounted in each of the two sets of first push rods (6). The mounting frame (2) is provided with Multiple sets of equidistantly distributed adjustment frames (8), the ends of two sets of second push rods (7) away from the mounting rod (5) are respectively fixedly connected to two sets of adjustment frames (8) located on both sides, two sets of cross-distributed first connecting rods (9) and second connecting rods (10) are provided between two adjacent sets of adjustment frames (8), and two sets of cross-distributed third connecting rods (12) and fourth connecting rods (13) are provided between two adjacent sets of adjustment frames (8), and two sets of symmetrically distributed pressure frames (22) are slidably installed on the adjustment frame (8).

2. The cutting mechanism for FFC cables according to claim 1, characterized in that: A cylinder (3) is fixedly installed on the operating frame (1). The mounting frame (2) is fixedly connected to the output end of the piston rod of the cylinder (3). A drive rod (4) is rotatably installed on the mounting frame (2). A cutting blade (20) is rotatably installed on the lower end of multiple sets of adjusting frames (8). A sliding groove (21) is provided on the cutting blade (20). The drive rod (4) is slidably engaged with the cutting blade (20) through the sliding groove (21).

3. The cutting mechanism for FFC cables according to claim 1, characterized in that: The lower ends of the first connecting rod (9) and the second connecting rod (10) are rotatably connected by a rotating shaft. The upper ends of the first connecting rod (9) and the second connecting rod (10) are rotatably mounted with sliders (11). The upper ends of the first connecting rod (9) and the second connecting rod (10) are slidably connected to the corresponding adjusting frame (8) through sliders (11).

4. The cutting mechanism for FFC cables according to claim 1, characterized in that: The top ends of the third link (12) and the fourth link (13) are rotatably connected by a pivot, and the lower ends of the third link (12) and the fourth link (13) are rotatably connected to the corresponding adjusting rods by a pivot. The third link (12) and the fourth link (13) are rotatably connected to the first link (9) and the second link (10) by a pivot, respectively.

5. The cutting mechanism for FFC cables according to claim 1, characterized in that: The bidirectional screw (14) is fitted with a first bevel gear (18), and a second bevel gear (19) is rotatably installed inside the mounting rod (5). The second bevel gear (19) meshes with the first bevel gear (18). The two ends of the bidirectional screw (14) pass through two sets of first push rods (6) and are threadedly connected to the two sets of first push rods (6). The screw tube (15) passes through the corresponding second push rod (7) and is threadedly connected to the second push rod (7).

6. The cutting mechanism for FFC cables according to claim 1, characterized in that: The bidirectional screw (14) has two sets of symmetrically distributed slots (16), and each of the two sets of screw tubes (15) has two sets of symmetrically distributed blocks (17). The blocks (17) are correspondingly arranged with the slots (16), and the screw tubes (15) are slidably connected to the bidirectional screw (14) through the blocks (17).

7. The cutting mechanism for FFC cables according to claim 1, characterized in that: Two sets of pressure frames (22) are distributed on both sides of the cutting blade (20). A slide rod (23) is fixedly installed inside the adjusting frame (8). Two sets of symmetrically distributed springs (24) are sleeved on the slide rod (23). The pressure frame (22) and the slide rod (23) are slidably sleeved. The two ends of the spring (24) are fixedly connected to the corresponding pressure frame (22) and the adjusting frame (8) respectively. A stop block (25) is fixedly installed at the top of the pressure frame (22). A limit switch (26) is fixedly installed inside the adjusting frame (8). The stop block (25) and the limit switch (26) are correspondingly arranged.

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