A highly flexible cable cutting device

Abstract

This utility model discloses a highly flexible ribbon cable cutting device, relating to the field of ribbon cable production technology. It includes a fixed support, a clamping block, a guide rod, and a first elastic element. The guide rod slides vertically through the fixed support, and the clamping block is fixedly connected to the bottom of the guide rod's outer wall. The first elastic element is sleeved on the outer wall of the guide rod. The two ends of the first elastic element abut against the fixed support and the clamping block respectively, providing downward pressure to the clamping block. This utility model, by installing the guide rod and the first elastic element, achieves elastic clamping of the ribbon cable, solving the problem of easy deviation during ribbon cable cutting and improving cutting accuracy.

Description

Technical Field

[0001] This utility model relates to the field of ribbon cable production technology, specifically to a highly flexible ribbon cable cutting device. Background Technology

[0002] Ribbon cables are core conductor components used for transmitting signals and power in electronic devices, communication terminals, automotive electronics, and other fields. They are typically composed of multiple insulated wires arranged and encapsulated at specific intervals. As a key post-processing equipment in the ribbon cable production process, the core function of ribbon cable cutting equipment is to precisely cut continuously wound long strips of ribbon cable into fixed-length segments according to the assembly requirements of the end product.

[0003] The existing equipment relies on a single spring to drive the reset during the cutting action. This can easily cause the cutting blade to jam and the cutting process to be uneven due to the decay of the spring force. In addition, the cable clamping structure lacks elastic buffer design, and the cable may cause problems such as skewed cuts and exposed wires due to positioning deviation during the cutting process.

[0004] Patent CN219788529U discloses a cable cutting device for IoT devices. The patent enables the upper support block to be lifted by a spring when idle, so that the upper cutting block and the lower cutting block, as well as the upper pressing roller and the lower positioning roller, are separated by a certain distance, which facilitates the insertion of the next cable and increases the ease of use of the device. It can effectively cut cables of various radii.

[0005] The aforementioned patent enables convenient material feeding during basic cutting and idle states, but it does not address issues such as cutting blade jamming and uneven cutting.

[0006] Therefore, this application proposes a highly flexible wire cutting device that can provide downward pressure to the clamping block through a first elastic element sleeved on the outer wall of the guide rod to avoid wire cutting deviation, unidirectional wire feeding, and adjustable feed length by adjusting the crank eccentricity. Utility Model Content

[0007] The purpose of this invention is to provide a highly flexible ribbon cable cutting device to solve the technical problems mentioned in the background art, such as the cutting action relying on a single spring to drive the reset, the cutting blade movement being stuck, and the cutting not being smooth.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a highly flexible cable cutting device, comprising a fixed support, a clamping block, a guide rod, and a first elastic element, wherein the guide rod is slidably inserted through the fixed support, the clamping block is fixedly connected to the bottom end of the outer wall of the guide rod, and the first elastic element is sleeved on the outer wall of the guide rod;

[0009] The first elastic element abuts against the fixed support and the clamping block at both ends, and the first elastic element provides downward pressure to the clamping block.

[0010] Preferably, a drive cam is fixedly installed at the top of the outer wall of the guide rod, and the drive cam moves synchronously with the guide rod;

[0011] The outer contour of the drive cam contacts the roller, the roller shaft is rotatably connected to the rear end of the outer wall of the transmission lever, the front end of the outer wall of the transmission lever is movably connected to the knife holder, the knife holder is rotatably hinged to the top end of the outer wall of the frame, and the cutting knife is fixedly installed at the front end of the outer wall of the knife holder.

[0012] Preferably, one end of the linkage plate is fixedly installed on the outer wall of the fixed support, and a counterweight is fixedly installed on the other end of the linkage plate;

[0013] The power spindle is fixedly connected to the middle of the linkage plate. The power spindle is connected to a one-way clutch, and the one-way clutch is connected to the output shaft of the drive motor.

[0014] Preferably, the rear end of the tool holder is connected to the front end of the transmission lever via a second elastic element.

[0015] Preferably, a platform is slidably mounted on the top of the outer wall of the frame, a driven clamping wheel is embedded in the top of the outer wall of the platform, an active clamping wheel is connected to the outer wall of the driven clamping wheel, and a clamping spring is provided between the driven clamping wheel and the platform;

[0016] The movement trajectory of the clamping block acts on the hub of the driven clamping wheel.

[0017] Preferably, a ratchet rack is fixedly installed at the bottom of the outer wall of the platform. The ratchet rack is adapted to a pusher, which is fixedly installed at one end of the feeding swing arm. The other end of the feeding swing arm is hinged to a crank, and the other end of the crank is connected to the motor output shaft.

[0018] Preferably, the profile of the drive cam includes a high-level curved surface and a drop-down low-level curved surface, with the drop-down low-level curved surface located at the end of the high-level curved surface.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This utility model, by installing a guide rod and a first elastic element, achieves the elastic clamping function of the ribbon cable, solves the problem of easy deviation during ribbon cable cutting, and improves cutting accuracy;

[0021] 2. This utility model achieves stable wire cutting by installing a drive cam, solving the problem of uneven cutting action and improving cutting efficiency. Attached Figure Description

[0022] Figure 1 This is a front view schematic diagram of the fixed support structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the bottom structure of the platform of this utility model;

[0024] Figure 3 This is a top view of the linkage plate structure of this utility model;

[0025] Figure 4 This is a top view of the platform structure of this utility model.

[0026] In the diagram: 1. Fixed support; 2. Clamping block; 3. Guide rod; 4. First elastic element; 5. Drive cam; 6. Roller; 7. Transmission lever; 8. Tool holder; 9. Frame; 10. Cutting blade; 11. Linkage plate; 12. Counterweight; 13. Power spindle; 14. Second elastic element; 15. Platform; 16. Driven clamping wheel; 17. Driven clamping wheel; 18. Clamping spring; 19. One-way clutch; 20. Ratchet; 21. Push claw; 22. Feeding swing arm; 23. Crank; 24. High-position curved surface; 25. Drop-type low-position curved surface. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Please see Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a highly flexible cable cutting device, comprising a fixed support 1, a clamping block 2, a guide rod 3, and a first elastic element 4. The guide rod 3 is slidably inserted into the fixed support 1. The clamping block 2 is fixedly connected to the bottom of the outer wall of the guide rod 3. The first elastic element 4 is sleeved on the outer wall of the guide rod 3. A drive cam 5 is fixedly installed at the top of the outer wall of the guide rod 3. The drive cam 5 moves synchronously with the guide rod 3. The two ends of the first elastic element 4 abut against the fixed support 1 and the clamping block 2 respectively, and the first elastic element 4 provides downward pressure to the clamping block 2.

[0031] Specifically, the drive cam 5 rotates clockwise under the drive of the power machine. In the initial state, the roller 6 contacts the high curved surface 24 of the drive cam 5. At this time, the rear end of the transmission lever 7 is in a high position under the support of the roller 6. The transmission lever 7 rotates clockwise around the central fulcrum, and its front end is lifted up. Through the fisheye bearing, it drives the rear end of the blade holder 8 to move upward. The blade holder 8 rotates counterclockwise around the hinge axis, so that the front cutting blade 10 is lifted up and forms a cutting gap with the lower cable support table. At the same time, the second elastic element 14 is stretched and stores elastic potential energy.

[0032] As the drive cam 5 continues to rotate, when the roller 6 transitions from the high curved surface 24 to the drop-type low curved surface 25, the supporting force of the drive cam 5 on the roller 6 decreases rapidly. Under the pulling force of the second elastic element 14, the rear end of the transmission lever 7 moves downward rapidly, the roller 6 rolls along the drop-type low curved surface 25, the transmission lever 7 rotates counterclockwise around the central fulcrum, and its front end presses down on the rear end of the knife holder 8. The knife holder 8 rotates clockwise around the hinge axis, and the cutting blade 10 at the front end moves downward rapidly to cut the ribbon cable on the support table. After the cutting is completed, the drive cam 5 continues to rotate, the roller 6 returns to the high curved surface 24, the drive cam 5 pushes the roller 6 upward, and the transmission lever 7 and the knife holder 8 reset.

[0033] Please see Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of a highly flexible wire cutting device. A drive cam 5 has an outer contour that contacts a roller 6. The roller 6's shaft is rotatably connected to the rear end of the outer wall of a transmission lever 7. The front end of the outer wall of the transmission lever 7 is movably connected to a blade holder 8. The blade holder 8 is rotatably hinged to the top end of the outer wall of a frame 9. A cutting blade 10 is fixedly installed at the front end of the outer wall of the blade holder 8. The rear end of the blade holder 8 is connected to the front end of the transmission lever 7 by a second elastic element 14. The contour of the drive cam 5 includes a high-position curved surface 24 and a drop-type low-position curved surface 25, with the drop-type low-position curved surface 25 located at the end of the high-position curved surface 24.

[0034] Specifically, the compression spring 18 is sleeved on the guide post at the bottom of the bearing housing and can only extend and retract in the vertical direction to avoid lateral displacement. The top end of the compression spring 18 abuts against the bottom of the bearing housing, and the bottom end abuts against the top surface of the stand 15. In its natural state, the compression spring 18 pushes the driven compression wheel 16 upward, creating an initial gap between the driven compression wheel 16 and the driving compression wheel 17. When the compression block 2 moves downward, its trajectory acts on the top of the hub of the driven compression wheel 16, and the compression block 2 applies downward pressure to the driven compression wheel 16, causing the driven compression wheel 16 to move downward. The compression spring 18 is further compressed, and the gap between the driven compression wheel 16 and the driving compression wheel 17 decreases, firmly clamping the cable. The clamping force can be adjusted by the downward stroke of the compression block 2.

[0035] Please see Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of a highly flexible wire cutting device. A platform 15 is slidably mounted on the top of the outer wall of the frame 9. A driven clamping wheel 16 is embedded in the top of the outer wall of the platform 15. An active clamping wheel 17 is connected to the outer wall of the driven clamping wheel 16. A clamping spring 18 is provided between the driven clamping wheel 16 and the platform 15. The movement trajectory of the clamping block 2 acts on the hub of the driven clamping wheel 16. A ratchet rack 20 is fixedly mounted on the bottom of the outer wall of the platform 15. The ratchet rack 20 is adapted to a pusher 21. The pusher 21 is fixedly mounted on one end of a feeding swing rod 22. The other end of the feeding swing rod 22 is hinged to a crank 23, and the other end of the crank 23 is connected to a motor output shaft.

[0036] Specifically, during the wire feeding process, the motor drives the crank 23 to perform circular motion. The crank 23 drives the feeding swing arm 22 to reciprocate around its fixed fulcrum via the hinge point (the swing angle range is 30°-60°). When the feeding swing arm 22 swings forward, it drives the pusher 21 to move forward. The pusher 21 meshes with the tooth surface of the ratchet 20, pushing the ratchet 20 and the frame 15 to slide forward along the guide rail of the frame 9. The frame 15 drives the driven clamping wheel 16 and the active clamping wheel 17 to move forward synchronously, thereby conveying the wire forward. When the feeding swing arm 22 swings backward, the pusher 21 rotates around the hinge point under the action of the return spring. Its tooth surface disengages from the tooth surface of the ratchet 20, and the pusher 21 slides along the back of the teeth of the ratchet 20, without driving the ratchet 20 to move backward, thus realizing unidirectional intermittent feeding of the wire.

[0037] The feeding length can be adjusted by adjusting the eccentricity of crank 23. The eccentricity adjustment range of crank 23 is 10-40mm, corresponding to a feeding length adjustment range of 20-80mm. During actual feeding, the rotation of the active clamping wheel 17 is synchronized with the sliding of the frame 15. The active clamping wheel 17 drives the cable tray forward through friction, while the sliding of the frame 15 provides auxiliary conveying power for the cable tray.

[0038] Please see Figure 1 , Figure 2 and Figure 3 The present invention provides an embodiment of a highly flexible wire cutting device, wherein one end of a linkage plate 11 is fixedly installed on the outer wall of the fixed support 1, and a counterweight block 12 is fixedly installed on the other end of the linkage plate 11; a power spindle 13 is fixedly connected to the middle of the linkage plate 11, the power spindle 13 is connected to a one-way clutch 19, and the one-way clutch 19 is connected to the output shaft of the drive motor.

[0039] Specifically, the other end of the linkage plate 11 is fixedly connected to the counterweight block 12 by welding, and the welding joint adopts double-sided fillet weld; the central axis of the counterweight block 12 is consistent with the central line of the linkage plate 11. Through the gravity of the counterweight block 12, the weight of components such as the fixed support 1, guide rod 3, and clamping block 2 can be balanced, reducing the load on the power motor during the driving process, and reducing the vibration amplitude of the equipment during high-speed operation.

[0040] The middle part of the linkage plate 11 is fixedly connected to the power spindle 13 via a flat key; one end of the power spindle 13 is fixedly connected to the inner ring of the one-way clutch 19 via a key; the one-way clutch 19 plays a key role in the power transmission process. When the drive motor rotates clockwise, its output torque is transmitted to the power spindle 13 through the one-way clutch 19, causing the power spindle 13 to rotate synchronously clockwise. The power spindle 13 then drives the linkage plate 11 to rotate around the spindle axis. One end of the linkage plate 11 drives the fixed support 1, guide rod 3, and clamping block 2 to move up and down reciprocally, realizing the clamping action of the cable; the other end of the linkage plate 11 drives the counterweight block 12 to move in a circular motion. The gravity of the counterweight block 12 balances the centrifugal force of the fixed support and other components, ensuring that the linkage plate 11 rotates smoothly; when the drive motor stops unexpectedly or reverses, the one-way clutch 19 will automatically cut off the power transmission to prevent the power spindle 13 from continuing to rotate or reverse under the action of inertia.

[0041] Working Principle: After the drive motor starts, it drives the main shaft to rotate via a one-way clutch. The main shaft then drives the linkage plate to rotate around its axis via a key. One end of the linkage plate synchronously drives the fixed support, guide rod, and clamping block to reciprocate up and down. The counterweight at the other end balances the weight of the fixed support, guide rod, and other components through gravity, reducing the motor load and vibration during high-speed operation. If the motor unexpectedly stops or reverses, the one-way clutch will automatically cut off the power to prevent the main shaft from rotating / reversing due to inertia. When the clamping block moves downward, its trajectory acts on the hub of the driven clamping wheel, pushing the driven clamping wheel downward to compress the clamping spring on the frame, reducing the gap between the driven clamping wheel and the driving clamping wheel, and firmly clamping the cable. The clamping force can be adjusted by the downward stroke of the clamping block.

[0042] When the feeding swing arm swings forward, the pusher engages with the ratchet at the bottom of the frame, pushing the ratchet and the frame forward along the frame guide rail. The frame drives the driven and active clamping wheels to move forward synchronously, and the friction of the active clamping wheel transports the wire forward.

[0043] When the feeding arm swings backward, the pusher rotates around the hinge point under the action of the return spring, disengages from the ratchet rack, and slides only along the back of the teeth to prevent the cable from retracting.

[0044] In the initial state, the roller contacts the high curved surface of the drive cam, the rear end of the support transmission lever is in a high position, the transmission lever rotates clockwise around the central fulcrum, the front end is lifted up, and the rear end of the blade holder is moved up through the fisheye bearing. The blade holder rotates counterclockwise around the hinge axis of the frame, causing the front cutting blade to be lifted up and forming a cutting gap with the cable support table. At the same time, the second elastic element is stretched and stores elastic potential energy.

[0045] As the drive cam continues to rotate, the support force of the drive cam on the roller decreases sharply when the roller transitions from the high curved surface to the drop-type low curved surface. Under the pulling force of the second elastic element, the rear end of the transmission lever moves down rapidly, and the roller rolls along the drop-type low curved surface. The transmission lever rotates counterclockwise around the central fulcrum, and the front end presses down on the rear end of the knife holder. The knife holder rotates clockwise around the hinge axis, driving the cutting blade to move down rapidly and cut the wire that has been clamped and fed into place on the support table.

[0046] After cutting, the drive cam rotates clockwise, the roller re-engages with the high curved surface, the drive cam pushes the roller upward, and sequentially drives the transmission lever and the blade holder to reset, and the cutting blade is lifted; at the same time, the linkage plate continues to rotate, driving the clamping block to move upward, the driven clamping wheel moves upward under the action of the clamping spring, the gap between it and the active clamping wheel returns to the initial state, and the cable is released.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A highly flexible cable cutting device, characterized in that: It includes a fixed support (1), a clamping block (2), a guide rod (3) and a first elastic element (4). The guide rod (3) is slidably inserted inside the fixed support (1). The clamping block (2) is fixedly connected to the bottom of the outer wall of the guide rod (3). The first elastic element (4) is sleeved on the outer wall of the guide rod (3). The first elastic element (4) abuts against the fixed support (1) and the pressing block (2) at both ends, and the first elastic element (4) provides downward pressure to the pressing block (2).

2. The highly flexible cable cutting device according to claim 1, characterized in that: The guide rod (3) has a drive cam (5) fixedly installed at the top of its outer wall, and the drive cam (5) moves synchronously with the guide rod (3). The outer contour of the drive cam (5) contacts the roller (6), the roller (6) is rotatably connected to the rear end of the transmission lever (7) on the outer wall, the transmission lever (7) is movably connected to the front end of the outer wall to the knife holder (8), the knife holder (8) is rotatably hinged to the top end of the frame (9) on the outer wall, and the cutting knife (10) is fixedly installed on the front end of the outer wall of the knife holder (8).

3. The highly flexible cable cutting device according to claim 1, characterized in that: One end of the linkage plate (11) is fixedly installed on the outer wall of the fixed support (1), and the other end of the linkage plate (11) is fixedly installed with a counterweight (12). The middle part of the linkage plate (11) is fixedly connected to the power spindle (13), the power spindle (13) is connected to the one-way clutch (19), and the one-way clutch (19) is connected to the output shaft of the drive motor.

4. The highly flexible cable cutting device according to claim 2, characterized in that: The rear end of the tool holder (8) is connected to the front end of the transmission lever (7) by a second elastic element (14).

5. The highly flexible cable cutting device according to claim 2, characterized in that: The frame (9) has a sliding mounting platform (15) at the top of its outer wall. A driven clamping wheel (16) is embedded at the top of the outer wall of the platform (15). The driven clamping wheel (16) is connected to the active clamping wheel (17) on its outer wall. A clamping spring (18) is provided between the driven clamping wheel (16) and the platform (15). The movement trajectory of the clamping block (2) acts on the hub of the driven clamping wheel (16).

6. The highly flexible cable cutting device according to claim 5, characterized in that: A ratchet rack (20) is fixedly installed at the bottom of the outer wall of the frame (15). The ratchet rack (20) is adapted to a pusher (21). The pusher (21) is fixedly installed at one end of the feeding swing rod (22). The other end of the feeding swing rod (22) is hinged to a crank (23). The other end of the crank (23) is connected to the motor output shaft.

7. The highly flexible cable cutting device according to claim 2, characterized in that: The profile of the drive cam (5) includes a high-level surface (24) and a drop-down low-level surface (25), with the drop-down low-level surface (25) located at the end of the high-level surface (24).

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