Multi-group same-position variable-pitch rod suitable for FFC (flexible flat cable)
By adopting multiple sets of homogeneous variable pitch rod structures in the FFC line processing equipment, the grouping homogeneous movement of the lug is achieved, which solves the problem of inconvenient movement of the lug in the prior art and improves the processing efficiency.
Patent Information
- Application Number
- CN202421349050.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-13
AI Technical Summary
The loop wheels in the existing FFC cable processing equipment are inconvenient to move, resulting in low operating efficiency and difficult to meet the needs of processing FFC cables.
Multiple sets of homogeneous variable pitch rod structures are adopted, and the grouping and homogeneous movement of the reels is achieved through the coordination of components such as spindle, sleeve, reel, push rod, rear push rod, front push rod, positioning wheel, etc.
The working efficiency and production efficiency of the reel movement are improved, so that the reel can guide the wires to the preset position more efficiently.
Smart Images
Figure CN222927929U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of FFC cables, and particularly relates to a multi-group same-position variable-spacing rod applicable to FFC cables. Background Technique
[0002] FFC cable is a commonly used plug-in cable in computers, also known as flexible flat cable, also known as Flexible Flat Cable (FFC). It can arbitrarily select the number of wires and the spacing, making the connection more convenient, greatly reducing the volume of electronic products, reducing production costs, and improving production efficiency. It is most suitable for use as a data transmission cable between moving parts and the motherboard, between PCB boards, and in miniaturized electrical equipment. It is widely used in the connection between the print head of various printers and the motherboard, and the signal transmission and board-to-board connection of products such as plotters, scanners, copiers, audio systems, liquid crystal appliances, fax machines, and various disc players. Currently, in the equipment for processing FFC cables, wire wheels are commonly used to guide the positions of the wires so that they can be accurately used for arranging and processing. However, the existing wire wheels are often manually adjusted or a single wire wheel is driven to move through the operation of a mechanical structure. Such a structure has low action efficiency and is difficult to meet the requirements for processing FFC cables. Therefore, its structure needs to be further improved. Summary of the Invention
[0003] (1) Technical Problems to be Solved
[0004] The purpose of the utility model is to overcome the defects of the prior art, solve the problem that the wire wheel in the prior art is inconvenient to move, resulting in low action efficiency, and provide a multi-group same-position variable-spacing rod applicable to FFC cables.
[0005] (2) Technical Solutions
[0006] To achieve the above object, the technical solution adopted by the present utility model is as follows: A multi-group same-position variable-spacing rod applicable to FFC cables, comprising a main shaft, a plurality of wire wheels sleeved on the main shaft, a rear push seat, a front push seat, a positioning wheel, and a plurality of push rods penetrating and sleeved between the wire wheels. The rear push seat and the front push seat are sleeved with the main shaft and cooperate to form a limit in the radial direction and are movable in the axial direction thereof. The plurality of push rods are arranged in an array along the circumferential direction of the wire wheels, and are grouped with the main shaft as the center of symmetry. The plurality of wire wheels are arranged along the circumferential direction of the main shaft, and the equal-distance interval is one group. The push rods of different groups are respectively limited and fixed with the wire wheels of different groups. The rear push seat is located at the end of the main shaft, the front push seat is located inside the rear push seat, the positioning wheel is located inside the front push seat and is fixed to the main shaft. The rear push seat is fixed to the push rods of one group and controls the synchronous movement of the wire wheels of this group. The front push seat controls the synchronous movement of the wire wheels of the other group by being fixed to the push rods of the other group. In the solution of the present utility model, the structure of the wire wheels and the push rods limited and sleeved on the main shaft enables the wire wheels to move in the same position in groups. By the structures of the front push wheel and the rear push wheel respectively controlling the wire wheels of different groups, the wire wheels are further enabled to move in groups. By the action of the wire wheels moving in groups, the wires to be arranged are guided to the preset positions. In this solution, the push rod structure is set to move the wire wheels of different groups in the same position in groups, effectively improving the working efficiency of the wire wheel movement and effectively improving the production efficiency.
[0007] Further, the number of wire reels is 4 groups, the number of push rods is 4 groups. The rear push seat includes rear push seat A and rear push seat D respectively sleeved on both ends of the main shaft. The front push seat includes front push seat B and front push seat C respectively sleeved on both ends of the main shaft and located inside the rear push seat. The rear push seat A controls group A wire reels. The group A wire reels include wire reel A1, wire reel A2, and wire reel A3. The rear push seat A controls the synchronous movement of wire reel A1, wire reel A2, and wire reel A3. The front push seat B controls group B wire reels. The group B wire reels include wire reel B1, wire reel B2, and wire reel B3. The front push seat B controls the synchronous movement of wire reel B1, wire reel B2, and wire reel B3. The front push seat C controls group C wire reels. The group C wire reels include wire reel C1, wire reel C2, and wire reel C3. The front push seat C controls the synchronous movement of wire reel C1, wire reel C2, and wire reel C3. The rear push seat D controls group D wire reels. The group D wire reels include wire reel D1, wire reel D2, and wire reel D3. The rear push seat D controls the synchronous movement of wire reel D1, wire reel D2, and wire reel D3. Wire reel A1, wire reel B1, wire reel C1, wire reel D1, wire reel A2, wire reel B2, wire reel C2, wire reel D2, wire reel A3, wire reel B3, wire reel C3, and wire reel D3 are arranged in sequence on the main shaft. In this solution, through the structural setting of group A wire reels, group B wire reels, group C wire reels, and group D wire reels, the same-group and same-position movement is realized through the limit of the push rod. In this solution, group A wire reels, group B wire reels, group C wire reels, and group D wire reels are respectively pushed and controlled by the rear push seat A and the front push seat B located at one end of the main shaft, the front push seat C located at the other end of the main shaft, and the rear push seat D through the push rod, so that they move according to the preset stroke. This solution preferably adopts a solution of 4 groups of wire reel groups. In actual implementation, it is not limited to this solution, and it can be 6 groups, 8 groups, etc. The structural setting in this solution effectively improves the action efficiency of the same-position movement of the wire reel group.
[0008] Further, the push rod has a card slot that forms a card position with the wire reel. In this solution, through the setting of the above card slot structure, the wire reel and the push rod are further accurately limited, so that the wire reels located on the push rod move in the same position.
[0009] Further, the wire wheel is provided with a through hole for the push rod to pass through. The through hole includes a circular through hole and a flat through hole. The circular through hole is for the push rod to pass through and move in the axial direction, and the flat through hole is for the push rod to pass through and be limited in the axial direction. The cross-sectional shape of the push rod matches that of the flat through hole. The caliber of the cross-section at the card slot is smaller than the width of the narrowest part of the flat through hole. The width of the card slot matches the thickness of the wire wheel. The push rod is inserted along the flat through hole until the card slot is located at the flat through hole and then rotated to be positioned. The push rod and the wire wheel that needs to be positioned are positioned by inserting and rotating through the flat through hole, and the push rod and the wire wheel that does not need to be positioned are inserted and move through the circular through hole. The setting of the circular through hole and the flat through hole structures in this solution effectively limits the wire wheel to be controlled. In this solution, the limit is effectively defined with the card slot of the push rod through the setting of the flat through hole structure. The structure setting of the push rod in this solution makes the limiting work convenient. It only needs to be inserted to the required position and then further rotated to be positioned to achieve the limit, which is convenient and fast. This solution further effectively improves the installation efficiency.
[0010] Further, the cross-section at the card slot is a circle with a caliber less than or equal to the width of the narrowest part of the flat through hole. In this solution, the setting of the circular structure further makes the rotation of the card slot in the above flat through hole smoother.
[0011] Further, the wire wheel is provided with 6 circular through holes and 2 flat through holes. The through holes are arranged in a circumferential array along the wire wheel. 8 convex parts arranged in a circumferential array are formed on the main shaft. 8 limiting grooves matching its shape are provided on the central hole of the wire wheel. The wire wheels arranged on the main shaft are placed by rotating 45° in the radial direction one by one. This solution further makes the placement position of the wire wheel more accurate through the 8-equal-part circumferential structure, and effectively places and limits it on the push rod for which it is limited.
[0012] Further, a hook for limiting the pulling stroke is installed between two adjacent wire wheels. The hook is located in the limiting groove and fits with the convex part installed on the main shaft of the central hole. In this solution, the setting of the hook structure effectively limits the maximum formation between two adjacent wire wheels and effectively prevents it from pulling over the stroke.
[0013] Further, the hook is of an I-shaped structure, and an I-shaped groove for forming a stroke limit with the hook is opened in the limiting groove on the wire wheel. In this solution, the limit is effectively defined through the setting of the I-shaped groove structure and the I-shaped hook, and its installation is convenient.
[0014] Further, a spring is installed between the rear push seat and the front push seat, and a spring is installed between the front push seat and the positioning wheel. In this solution, the setting of the spring structure makes its co-location movement smoother and prevents jamming. This solution has better practicability.
[0015] (III) Advantageous Effects
[0016] Compared with the prior art, the utility model has the following advantageous effects: By setting the push rod structure to move different groups of wire wheels in the same position in groups, the working efficiency of the wire wheel movement is effectively improved, and the production efficiency is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0018] Figure 1 It is a three-dimensional structure schematic diagram of a multi-group same-position variable pitch rod applicable to FFC flexible flat cable in the present utility model;
[0019] Figure 2 It is a front view structure schematic diagram of the open state of a multi-group same-position variable pitch rod applicable to FFC flexible flat cable in the present utility model;
[0020] Figure 3 It is a front view structure schematic diagram of the closed state of a multi-group same-position variable pitch rod applicable to FFC flexible flat cable in the present utility model;
[0021] Figure 4 It is a structure schematic diagram of the limiting relationship between the wire wheel and the push rod of a multi-group same-position variable pitch rod applicable to FFC flexible flat cable in the present utility model;
[0022] Figure 5 It is a three-dimensional structure schematic diagram of the wire wheel of a multi-group same-position variable pitch rod applicable to FFC flexible flat cable in the present utility model;
[0023] Figure 6 It is a three-dimensional structure schematic diagram of the push rod of a multi-group same-position variable pitch rod applicable to FFC flexible flat cable in the present utility model;
[0024] Figure 7 It is a structure schematic diagram of the assembly relationship between two adjacent wire wheels and the hook of a multi-group same-position variable pitch rod applicable to FFC flexible flat cable in the present utility model;
[0025] Figure 8 It is a schematic diagram of the radial placement angle positions of wire wheels A1, A2, and A3 of a multi-group same-position variable pitch rod applicable to FFC flexible flat cable in the present utility model;
[0026] Figure 9It is a schematic diagram of the radial placement angular positions of the wire wheels B1, B2, and B3 of multiple groups of same-position variable pitch rods applicable to FFC cables in the present utility model;
[0027] Figure 10 It is a schematic diagram of the radial placement angular positions of the wire wheels C1, C2, and C3 of multiple groups of same-position variable pitch rods applicable to FFC cables in the present utility model;
[0028] Figure 11 It is a schematic diagram of the radial placement angular positions of the wire wheels D1, D2, and D3 of multiple groups of same-position variable pitch rods applicable to FFC cables in the present utility model;
[0029] Figure 12 It is a three-dimensional structural schematic diagram of the hook of multiple groups of same-position variable pitch rods applicable to FFC cables in the present utility model.
[0030] 1. Main shaft; 11. Protruding part; 2. Wire wheel; 2-A1. Wire wheel A1; 2-B1. Wire wheel B1; 2-C1. Wire wheel C1; 2-D1. Wire wheel D1; 2-A2. Wire wheel A2; 2-B2. Wire wheel B2; 2-C2. Wire wheel C2; 2-D2. Wire wheel D2; 2-A3. Wire wheel A3; 2-B3. Wire wheel B3; 2-C3. Wire wheel C3; 2-D3. Wire wheel D3; 21. Through hole; 211. Circular through hole; 212. Flat through hole; 22. Central hole; 221. Limiting groove; 222. I-shaped groove; 3. Rear push seat; 3-A. Rear push seat A; 3-D. Rear push seat D; 4. Front push seat; 4-B. Front push seat B; 4-C. Front push seat C; 5. Positioning wheel; 6. Push rod; 61. Card slot; 7. Hook; 8. Spring. Specific embodiments
[0031] As shown in the attached drawings, a multi-group same-position variable-spacing rod applicable to FFC cables in a specific embodiment of the present utility model includes a main shaft 1, a plurality of wire wheels 2 sleeved on the main shaft 1, a rear push seat 3, a front push seat 4, a positioning wheel 5, and a plurality of push rods 6 penetrating and sleeved between the wire wheels 2. The rear push seat 3 and the front push seat 4 are sleeved and matched with the main shaft 1 to form a limit in the radial direction and are movable in the axial direction thereof. The plurality of push rods 6 are arranged in an array along the circumferential direction of the wire wheels 2, and one group is centrosymmetric with respect to the main shaft 1. The plurality of wire wheels 2 are arranged along the circumferential direction of the main shaft 1, and an equal-distance interval forms one group. The push rods 6 of different groups are respectively fixedly limited with the wire wheels 2 of different groups. The rear push seat 3 is located at the end of the main shaft 1, the front push seat 4 is located inside the rear push seat 3, the positioning wheel 5 is located inside the front push seat 4 and is fixed to the main shaft 1. The rear push seat 3 is fixed to the push rods 6 of one group and controls the synchronous movement of the wire wheels 2 of this group. The front push seat 4 is fixed to the push rods 6 of the other group and controls the synchronous movement of the wire wheels 2 of this group. In the solution of the present utility model, the structure of the wire wheels 2 and the push rods 6 limitedly sleeved on the main shaft 1 and limitedly matched enables the wire wheels 2 to move in the same position in groups. The structure of the front push wheel and the rear push wheel respectively controls the setting of the wire wheels 2 of different groups, further enabling the wire wheels 2 to move in groups. The action of the wire wheels 2 moving in groups realizes guiding the wires to be arranged to the preset positions. In this solution, the push rods 6 are set to move the wire wheels 2 of different groups in the same position in groups, effectively improving the working efficiency of the movement of the wire wheels 2 and effectively improving the production efficiency.
[0032] In a further technical solution of this embodiment, as Figures 1 to 4As shown, the number of sets of the wire wheels 2 is 4, and the number of sets of the push rods 6 is 4. The rear push seat 3 includes rear push seats 3-A and 3-D respectively sleeved on both ends of the main shaft 1. The front push seat 4 includes front push seats 4-B and 4-C respectively sleeved on both ends of the main shaft 1 and located inside the rear push seat 3. The rear push seat 3-A controls the A group of wire wheels 2. The A group of wire wheels 2 includes wire wheels 2-A1, 2-A2, and 2-A3. The rear push seat 3-A controls the synchronous movement of the wire wheels 2-A1, 2-A2, and 2-A3. The front push seat 4-B controls the B group of wire wheels 2. The B group of wire wheels 2 includes wire wheels 2-B1, 2-B2, and 2-B3. The front push seat 4-B controls the synchronous movement of the wire wheels 2-B1, 2-B2, and 2-B3. The front push seat 4-C controls the C group of wire wheels 2. The C group of wire wheels 2 includes wire wheels 2-C1, 2-C2, and 2-C3. The front push seat 4-C controls the synchronous movement of the wire wheels 2-C1, 2-C2, and 2-C3. The rear push seat 3-D controls the D group of wire wheels 2. The D group of wire wheels 2 includes wire wheels 2-D1, 2-D2, and 2-D3. The rear push seat 3-D controls the synchronous movement of the wire wheels 2-D1, 2-D2, and 2-D3. The wire wheels 2-A1, 2-B1, 2-C1, 2-D1, 2-A2, 2-B2, 2-C2, 2-D2, 2-A3, 2-B3, 2-C3, and 2-D3 are arranged in sequence on the main shaft 1. In this solution, through the structural setting of the A group of wire wheels 2, B group of wire wheels 2, C group of wire wheels 2, and D group of wire wheels 2, the same-group and same-position movement is realized through the limit of the push rod 6. In this solution, the A group of wire wheels 2, B group of wire wheels 2, C group of wire wheels 2, and D group of wire wheels 2 are respectively controlled and pushed by the rear push seat 3-A and the front push seat 4-B at one end of the main shaft 1, the front push seat 4-C at the other end of the main shaft 1, and the rear push seat 3-D through the push rod 6 to move according to the preset stroke. This solution preferably adopts a scheme of 4 groups of wire wheels 2. In actual implementation, it is not limited to this scheme and can be 6 groups, 8 groups, etc. The structural setting in this solution effectively improves the action efficiency of the same-position movement of the wire wheel 2 groups.
[0033] In a further technical solution of this embodiment, as Figure 6 shown, the push rod 6 has a card slot 61 that forms a card position with the wire wheel 2. In this solution, through the setting of the above card slot 61 structure, the wire wheel 2 and the push rod 6 are further accurately limited, so that the wire wheels 2 located on the push rod 6 move in the same position.
[0034] In a further technical solution of this embodiment, as Figures 5 to 6As shown, the wire wheel 2 has a through hole 21 for the push rod 6 to pass through. The through hole 21 includes a circular through hole 211 and a flat through hole 212. The circular through hole 211 is for the push rod 6 to pass through and move in the axial direction, and the flat through hole 212 is for the push rod 6 to pass through and be limited in the axial direction. The cross-sectional shape of the push rod 6 is adapted to the flat through hole 212. The diameter of the cross-section at the card slot 61 is smaller than the width of the narrowest part of the flat through hole 212. The width of the card slot 61 is adapted to the thickness of the wire wheel 2. The push rod 6 is inserted along the flat through hole 212 and rotated until the card slot 61 is located at the flat through hole 212 for positioning. The push rod 6 and the wire wheel 2 that needs to be positioned are positioned by inserting and rotating through the flat through hole 212. The push rod 6 and the wire wheel 2 that does not need to be positioned are inserted and move through the circular through hole 211. The setting of the circular through hole 211 and the flat through hole 212 structures in this solution effectively limits the wire wheel 2 to be controlled. In this solution, the setting of the flat through hole 212 structure effectively limits the card slot 61 of the push rod 6. The structure setting of the push rod 6 in this solution makes the limiting work convenient. It only needs to be inserted to the required position and then further rotated for positioning to achieve limiting, which is convenient and fast. This solution further effectively improves the installation efficiency.
[0035] In a further technical solution of this embodiment, as Figure 6 shown, the cross-section at the card slot 61 is a circle with a diameter less than or equal to the width of the narrowest part of the flat through hole 212. In this solution, the setting of the circular structure further makes the rotation of the card slot 61 in the flat through hole 212 smoother.
[0036] In a further technical solution of this embodiment, as Figures 4 to 6 shown, the wire wheel 2 is provided with 6 circular through holes 211 and 2 flat through holes 212. The through holes 21 are arranged in a circumferential array along the wire wheel 2. The main shaft 1 is formed with 8 convex portions 11 arranged in a circumferential array. The central hole 22 of the wire wheel 2 has 8 limiting grooves 221 adapted to its shape. The wire wheels 2 arranged on the main shaft 1 are placed one by one by rotating 45° in the radial direction; the radial placement angle positions of the wire wheels A1, A2, and A3 of the A group of wire wheels in this solution are as Figure 8 shown; the radial placement angle positions of the wire wheels B1, B2, and B3 of the B group of wire wheels in this solution are as Figure 9 shown; the radial placement angle positions of the wire wheels C1, C2, and C3 of the C group of wire wheels in this solution are as Figure 10 shown; the radial placement angle positions of the wire wheels D1, D2, and D3 of the D group of wire wheels in this solution are as Figure 11 shown. This solution further makes the placement position of the wire wheel 2 more accurate through the 8-equal-part circular structure, and effectively places and limits it on the push rod 6 for limiting.
[0037] In a further technical solution of this embodiment, as Figure 7 shown, a hook 7 for limiting its pulling stroke is installed between two adjacent wire wheels 2. The hook 7 is located in the limiting groove 221 and is in contact with a convex portion 11 mounted on a main shaft 1 in the central hole 22. In this solution, the maximum formation between two adjacent wire wheels 2 is effectively limited through the setting of the hook 7 structure, effectively preventing its over-travel during pulling.
[0038] In a further technical solution of this embodiment, as Figure 12 shown, the hook 7 is of an I-shaped structure, and an I-shaped groove 222 for forming stroke limitation with the hook 7 is provided in the limiting groove 221 on the wire wheel 2. In this solution, through the setting of the I-shaped groove 222 structure and the effective limitation of the I-shaped hook 7, its installation is convenient.
[0039] In a further technical solution of this embodiment, as Figures 2 to 3 shown, a spring 8 is installed between the rear push seat 3 and the front push seat 4, and a spring 8 is installed between the front push seat 4 and the positioning wheel 5. In this solution, through the setting of the spring 8 structure, the movement of its co-position is made smoother, preventing jamming, and this solution has better practicability.
[0040] The above-described embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by those of ordinary skill in the art to the technical solution of the present invention should fall within the protection scope of the present invention. The technical content claimed by the present invention has been fully recorded in the claims.
Claims
1. A plurality of sets of co-located variable pitch rods suitable for FFC cable arrangement, characterized in that: The present invention relates to a method for producing a plurality of linear wheels according to the present invention, wherein the plurality of linear wheels are arranged in a circumferential direction of the main shaft, ...
2. The multiple sets of co-located variable pitch rods suitable for FFC cable arrangement according to claim 1, characterized in that: The number of the wire wheels is 4, the number of the push rods is 4, the rear push seat includes a rear push seat A and a rear push seat D which are respectively sleeved on the two ends of the main shaft, the front push seat includes a front push seat B and a front push seat C which are respectively sleeved on the two ends of the main shaft and located on the inner side of the rear push seat, the rear push seat A controls the wire wheels of group A, the wire wheels of group A include wire wheels A1, wire wheels A2, and wire wheels A3, the rear push seat A controls the wire wheels A1, wire wheels A2, and wire wheels A3 to move synchronously, the front push seat B controls the wire wheels of group B, the wire wheels of group B include wire wheels B1, wire wheels B2, and wire wheels B3, the front push seat B controls the wire wheels B1, wire wheels B2, The wire wheel B3 moves synchronously, the front push seat C controls the wire wheel group C, the wire wheel group C includes wire wheel C1, wire wheel C2, and wire wheel C3, the front push seat C controls the wire wheel C1, wire wheel C2, and wire wheel C3 to move synchronously, the rear push seat D controls the wire wheel group D, the wire wheel group D includes wire wheel D1, wire wheel D2, and wire wheel D3, the rear push seat D controls the wire wheel D1, wire wheel D2, and wire wheel D3 to move synchronously, the wire wheel A1, wire wheel B1, wire wheel C1, wire wheel D1, wire wheel A2, wire wheel B2, wire wheel C2, wire wheel D2, wire wheel A3, wire wheel B3, wire wheel C3, and wire wheel D3 are arranged in sequence on the main shaft.
3. The multiple sets of co-located variable pitch rods suitable for FFC cable arrangement according to claim 2, characterized in that: The push rod has a locking groove which forms a locking position with the wire wheel.
4. The multiple sets of co-located variable pitch rods suitable for FFC cable arrangement according to claim 3, characterized in that: The wire wheel is provided with a through hole for the push rod to pass through, and the through hole includes a round through hole and a flat through hole. The round through hole is used for the push rod to pass through and move in the axial direction, and the flat through hole is used for the push rod to pass through and limit the position in the axial direction. The cross-sectional shape of the push rod is adapted to the flat through hole, the diameter of the cross section at the slot is smaller than the narrowest width of the flat through hole, and the width of the slot is adapted to the thickness of the wire wheel. The push rod is inserted along the flat through hole until the slot is located at the flat through hole and is rotated to be positioned. The push rod and the wire wheel that needs to be positioned are inserted and rotated through the flat through hole to be positioned, and the push rod and the wire wheel that does not need to be positioned are inserted and moved through the round through hole.
5. The multiple sets of co-located variable pitch rods suitable for FFC cable arrangement according to claim 4, characterized in that: The cross section of the slot is a circle with a diameter less than or equal to the width of the narrowest part of the flat through hole.
6. The multiple sets of co-located variable pitch rods suitable for FFC cable arrangement according to claim 4, characterized in that: The wire wheel is provided with 6 round through holes and 2 flat through holes, and the through holes are distributed along the circumferential array of the wire wheel. The main shaft is formed with 8 protrusions arranged along the circumferential direction. The center hole of the wire wheel has 8 limiting grooves adapted to its shape. The wire wheels arranged on the main shaft are placed one by one rotated 45° in their radial position.
7. The multiple sets of co-located pitch-variable rods suitable for FFC cable arrangement according to claim 6, characterized in that: A hook for limiting the pulling stroke of two adjacent wire wheels is arranged between them. The hook is located in the limiting groove and fits with the raised part on the main shaft arranged on the center hole.
8. The multiple sets of co-located pitch-variable rods suitable for FFC cable arrangement according to claim 7, characterized in that: The hook is an I-shaped structure, and an I-shaped groove which forms a travel limit with the hook is provided in the limiting groove on the wire wheel.
9. The multiple sets of co-located variable pitch rods suitable for FFC cable arrangement according to claim 1, characterized in that: A spring is arranged between the rear push seat and the front push seat, and a spring is arranged between the front push seat and the positioning wheel.