A wire stripping device suitable for thin and long wires

Abstract

This utility model discloses a wire stripping device suitable for thin and long wires, which includes a base, a fixture base plate with a wire groove mounted on the base, and a cutting mechanism that can move up and down above the fixture base plate. The fixture base plate is also provided with a wire feeding tension mechanism, which is located upstream of the cutting mechanism, and a wire pulling mechanism is located downstream of the cutting mechanism. This utility model realizes automated control of cutting and pulling through mechanical structure, eliminating the force and angle deviations caused by human factors. It effectively avoids the problem of wire shaking when pulled after cutting due to the lack of a dedicated tension control mechanism in the prior art. The application of the wire feeding tension mechanism ensures that the wire is always taut, thereby realizing automated processing of thin and long wire stripping operations, effectively avoiding core wire damage caused by manual operation. The device greatly improves the efficiency and success rate of cutting and stripping thin and long wires.

Description

Technical Field

[0001] This utility model relates to the field of wire processing production equipment, specifically to a wire stripping device suitable for slender wires. Background Technology

[0002] In the wire harness manufacturing industry, there are many applications for separating the core wires or stripping the outer layer of the core wires to test the internal conductors. However, there is currently no equipment on the market specifically designed for wire stripping, especially for the stripping needs of small-diameter, long-distance wires, which no technology or equipment can currently meet well.

[0003] Stripping the core wire or conductor mainly involves peeling off the outer sheath of a section of wire. This sheath is typically very thin, sometimes less than 1mm. Currently, this is primarily done manually. A fixed blade is inserted into the wire or core sheath, and a groove is used to hold the wire or core in place. Then, the wire or core is quickly pulled out of the groove by hand, completing the axial cutting of the outer layer of the wire or core. However, manual cutting becomes difficult when the wire length exceeds 30mm. Inconsistent operator skill during removal, varying angles, force, and pulling speeds can damage the internal core or conductor of the wire. Therefore, the success rate can only be improved by reducing efficiency. However, for lengths exceeding 100mm, the existing methods are almost impossible to complete, necessitating improvements to the existing equipment. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a wire stripping device suitable for thin and long wires, which has good stability when cutting the outer sheath of the wire or core wire to ensure cutting accuracy and constant cutting tension. To solve the above problem, the specific technical solution is as follows: A wire stripping device suitable for thin and long wires includes a base, a fixture base plate with a wire groove mounted on the base, and a cutting mechanism that can move up and down above the fixture base plate. The fixture base plate is also provided with a wire feeding tension mechanism, which is located upstream of the cutting mechanism, and a wire pulling mechanism is provided downstream of the cutting mechanism.

[0005] Preferably, the cutting mechanism includes a fixed bracket fixedly mounted on the base and a blade holder slidably mounted on the fixed bracket. A blade is detachably mounted on the blade holder, and the blade holder is signal-connected to a servo motor that controls the up-and-down sliding of the blade holder.

[0006] Preferably, the wire feeding tension mechanism includes a roller mounting base that can move up and down, on which a rotatable roller is mounted via bearings, and the central axis of the roller is parallel to the fixture base plate and perpendicular to the wire groove.

[0007] Preferably, the surface of the roller is coated with a rubber layer.

[0008] Preferably, the roller mounting base is rotatably connected to two first lead screws with vertical central axes via bearings, and an adjustment mechanism is provided between the first lead screws to drive them to rotate synchronously. The base is provided with a first threaded structure that cooperates with the first lead screws.

[0009] Preferably, the wire pulling mechanism includes a sliding base plate and a clamp for clamping the wire mounted on the upper surface of the sliding base plate; a rotatable second lead screw with a horizontal central axis is installed in the base, a second threaded structure that cooperates with the second lead screw is provided below the sliding base plate, and a limiting groove parallel to the central axis of the second lead screw is provided on the base, and the sliding base plate is inserted into the limiting groove.

[0010] Preferably, the fixture base plate is hinged with a lockable cover plate, the cover plate having a working hole that cooperates with the cutting mechanism, and the blade of the cutting mechanism extending into the working hole.

[0011] Preferably, a threader is provided between the wire pulling mechanism and the cover plate.

[0012] The application of this utility model has the following advantages: 1. By using a high-precision positioning fixture base plate and cover plate, the wire or core wire is strictly limited, ensuring high-precision positioning of the wire and core wire over a long distance during the wire pulling and stripping process; 2. The wire feeding tension mechanism presses the wire to keep it horizontal and provides key tension force during the pulling process, ensuring minimal deformation of the wire during stripping and avoiding damage to the inner core / conductor caused by minor deformation during stripping; 3. The servo motor and lead screw slide rail structure achieve accurate wire pulling distance and precise cutting depth of the cutting mechanism; 4. The conductor of the wire can be obtained by first stripping the outer sheath of the wire, and then stripping the outer sheath of the obtained core wire. Through multi-segment cutting mechanism operation, and using special blades for different wires and core wires, the stripping effect is ensured. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the base of this utility model; Figure 3 This is a schematic diagram of the wire feeding tension mechanism of this utility model; Figure 4 This is a schematic diagram of the cutting mechanism of this utility model; Figure 5 This is a schematic diagram of the wire-pulling mechanism of this utility model. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] This utility model discloses a wire stripping device suitable for slender wires, comprising a base 1 for supporting the entire device, a fixture base plate 2 with a wire groove 21 mounted on the base 1, and a cutting mechanism 3 that can move up and down above the fixture base plate 2. The base 1 has a heat dissipation mechanism 11. The fixture base plate 2 is a positioning base plate that supports the wire, and its wire groove 21 is used to constrain the axial movement trajectory of the wire. Specifically, it can be made of metal or engineering plastic, and the cross-sectional shape of the wire groove 21 matches the outer diameter of the wire. The cutting mechanism 3 is the component that performs the cutting action, achieving the positioning of the cutting depth through vertical movement. The blade 31 is detachable, allowing for the replacement of different blade types to meet different cutting needs. The fixture base plate 2 is also equipped with a wire feeding tension mechanism 4. The wire feeding tension mechanism 4 is a component that applies tension to the wire before it enters the cutting area. It can be implemented by combining a roller 41 with a material with a certain elasticity wrapped around the surface of the roller 41. The wire feeding tension mechanism 4 is located upstream of the cutting mechanism 3. On the one hand, when the wire bundle or core wire is fed into the wire groove 21 of the fixture base plate 2, the wire feeding tension mechanism 4 can act as a power structure to push the wire bundle or core wire downstream by rotating the wire feeding tension mechanism 4. On the other hand, during cutting, the wire feeding tension mechanism 4 acts as a wire pressing mechanism upstream of the cutting mechanism 3, which can ensure that the wire bundle or core wire is always in close contact with the fixture base plate 2. Downstream of the cutting mechanism 3 is a wire pulling mechanism 5. The wire pulling mechanism 5 is a traction component that drives the wire to complete the stripping action. It can be implemented by using a screw drive in conjunction with a sliding seat plate 51 to achieve precise displacement control of the wire or core wire.

[0016] Specifically, the cutting mechanism 3 includes a fixed bracket 32 ​​fixedly mounted on the base 1 and a blade holder 33 slidably mounted on the fixed bracket 32. A blade 31 is detachably mounted on the blade holder 33. The blade holder 33 is connected to a servo motor that controls its up-and-down sliding. The fixed bracket 32 ​​is rigidly connected to the base 1 and provides support for the blade installation. Specifically, it can be fixed to the base 1 by welding or bolting. It also provides vertical sliding guidance for the blade holder 33. The blade holder 33 is the moving part that carries the blade 31. It can be made of aluminum alloy and achieves vertical displacement by forming a sliding pair with the fixed bracket 32. The detachable blade 31 is a cutting part that can be quickly installed on the blade holder 33 using screws or a snap-fit ​​structure. It can be made of high-speed steel or cemented carbide for easy replacement after wear. The cutter holder 33 is controlled by a servo motor. It primarily utilizes a power unit connected to a ball screw or gear set via the servo motor's output shaft. The reason for using a servo motor to control the vertical movement of the cutter holder 33 is that it employs a closed-loop control system to precisely control the speed and displacement of the cutter holder 33, achieving accurate control of the cutting force of the blade 31 during cutting and preventing the blade 31 from damaging the conductor inside the core wire. After the wire is positioned by the fixture base plate 2, the servo motor drives the cutter holder 33 to move vertically downwards along the fixed bracket 32, causing the blade 31 to contact the wire sheath. The stroke of the cutter holder 33 can be controlled by servo motor programming to ensure that the cutting depth matches the wire sheath thickness. Compared to traditional manual operation that relies on operator experience to control the cutting depth, this device is less prone to core wire damage due to uneven force. The servo motor-driven cutter holder 33 achieves millimeter-level displacement accuracy and maintains constant pressure during cutting, preventing damage to the internal conductor.

[0017] The wire feeding tension mechanism 4 includes a vertically movable roller mounting base 42. A rotatable roller 41 is mounted on the roller mounting base 42 via bearings. The roller 41 is a cylindrical component that contacts the wire. Specifically, it can be a steel roller 41 with a hard chrome-plated surface. The roller 41 is mounted on the roller mounting base 42 via bearings and can rotate freely around its axis. The central axis of the roller 41 is parallel to the fixture base plate 2 and perpendicular to the wire groove 21. That is, the central axis of the roller 41 is orthogonal to the wire feeding direction. Thus, when the roller 41 rotates, the friction between the roller 41 and the wire or core wire can smoothly and perfectly push the wire or core wire into the wire groove 21. Furthermore, to ensure stable tension between the roller 41 and the wire, a rubber layer 43 is coated on the surface of the roller 41. The rubber layer 43 can be used to ensure continuous contact between the roller 41 and the wire and to transmit tension, increase the friction between the roller 41 and the wire and buffer the contact pressure, and avoid direct compression by hard materials that could cause indentations or deformation on the wire surface. In specific operation, when the wire is about to enter the wire groove 21 of the fixture base plate 2, the roller mounting seat 42 can first adjust its height according to the wire diameter to allow the wire to enter between the wire feeding tension mechanism 4 and the fixture base plate 2. Then, by further adjusting the height of the roller 41, the surface of the roller 41 is kept in contact with the wire. The roller 41 is manually rotated, and the friction between the roller 41 and the wire guides the wire or core wire forward. When the outer sheath of the wire or core wire is cut, during the process of the wire or core wire being pulled forward, the friction between the roller 41 and the wire will drive the roller 41 to rotate again. The bearing converts the sliding friction between the roller 41 and the wire into rolling friction. The perpendicular alignment of the roller axis with the wire groove 21 ensures that the wire always travels along a straight path, avoiding lateral deviation that could cause tension fluctuations. Compared to traditional manual operation where the operator needs to manually press the wire to maintain tension, this not only avoids uneven force that could cause the wire to shake or deform, but also prevents injury to workers from friction between their hands and the wire. The wire feeding tension mechanism 4, through a mechanized height adjustment mechanism 45 working in conjunction with the roller axis 41, achieves automatic tension balance control, eliminating the instability of manual operation.

[0018] The installation and motion control of the roller mounting base 42 are achieved through lead screws. Specifically, two vertically aligned first lead screws 44 are rotatably connected to the roller mounting base 42 via bearings. An adjustment mechanism 45 is provided between the first lead screws 44 to drive them to rotate synchronously. The base 1 is provided with a first threaded structure that mates with the first lead screws 44. The first lead screw 44 is a rod-shaped component with external threads, which can be implemented using a trapezoidal thread or a ball screw structure. The rotational motion is transmitted through the threaded pair and converted into linear motion in the vertical direction of the roller mounting base 42. The two first lead screws 44 ensure the smooth displacement of the roller mounting base 42 and avoid offset caused by uneven force on one side, thereby ensuring that the tension applied to the wire by the roller 41 is evenly distributed. The adjustment mechanism 45 is a transmission component used to synchronously drive the two lead screws. It can be implemented using a gear set or a synchronous belt pulley structure to ensure that the rotation of the two first lead screws 44 drives the roller mounting base 42 in the same direction. Lead screw-driven linear motion is well known in the mechanical design industry and will not be elaborated here. The first thread structure refers to an internal threaded hole or nut component that is set on the base 1 and matches the external thread of the first lead screw 44, and is used to convert the rotational motion of the lead screw into the vertical displacement of the roller mounting seat 42.

[0019] The wire pulling mechanism 5 includes a sliding base plate 51 and a clamp 52 for clamping the wire mounted on the upper surface of the sliding base plate 51. The clamp 52 includes a handle 53 for adjusting the clamping degree, and one end of the wire or core wire is fixed to the wire pulling mechanism 5 by the handle 53. The sliding base plate 51 carries the clamp 52 and moves along a fixed path. Specifically, it can be made of aluminum alloy sheet. The horizontal movement of the sliding base plate 51 drives the wire to complete axial stretching. A second lead screw 54 with a horizontally rotatable central axis is installed in the base 1. A second threaded structure 55 that cooperates with the second lead screw 54 is provided below the sliding base plate 51. The rotational motion is converted into linear displacement to control the wire pulling distance. The base 1 is provided with a limiting groove 56 parallel to the central axis of the second lead screw 54. The sliding base plate 51 is inserted into the limiting groove 56. The second lead screw 54 is provided with guide rails 57 parallel to it on both sides. The limiting groove 56 and the guide rails 57 not only provide support for the installation of the sliding base plate 51, but also provide guidance for its movement. The limiting groove 56 and guide rail 57 are guiding structures that constrain the movement direction of the sliding seat plate 51. Specifically, they can be implemented using a rectangular cross-section groove, which restricts the deviation of the sliding seat plate 51's movement trajectory through the contact surface between the groove wall and the sliding seat plate 51. When the second lead screw 54 is externally driven to rotate, the second thread structure 55 converts the rotation of the lead screw into the horizontal linear motion of the sliding seat plate 51. The second thread structure 55 at the bottom of the sliding seat plate 51 engages with the second lead screw 54, and the clamp 52 at the top holds the end of the wire. The limiting groove 56 provided on the base 1 forms an insertion fit with the sliding seat plate 51, ensuring that the sliding seat plate 51 can only move along the axial direction of the second lead screw 54. Traditional manual wire stripping relies on operators manually pulling the wire, which can lead to problems such as pulling angle deviation and uneven speed, easily causing wire bending or uncontrolled cutting depth. By replacing manual pulling with mechanical transmission, the speed fluctuation and directional deviation of manual operation are eliminated. Through the transmission of the second lead screw 54 and its cooperation with the wire groove 21, the axial movement trajectory of the wire is mechanically constrained, ensuring that the pulling direction is completely aligned with the axis of the wire groove 21, and preventing lateral displacement or torsion of the wire during the stripping process.

[0020] A lockable cover plate 6 is hinged to the base plate 2 of the fixture. The cover plate 6 has a working hole 61 that mates with the cutting mechanism 3, and the blade 31 of the cutting mechanism 3 extends into the working hole 61. The cover plate 6 is a plate-like structure connected to the edge of the base plate 2 via a pivot, which can be achieved using a metal sheet and a hinge. The opening and closing action allows for quick clamping and fixing of the wire. The lockable design of the cover plate 6 refers to the inclusion of a mechanical latch to maintain the relative position of the cover plate 6 and the base plate 2 when closed. The working hole 61 on the cover plate 6 penetrates the cover plate 6 and corresponds to the movement trajectory of the cutting mechanism 3. It can be a rectangular or circular through-hole structure; in this embodiment, a rectangular through-hole structure is used to provide cutting space for the blade 31 and restrict lateral displacement of the wire. When the cover plate 6 is closed and locked, the wire is pressed into the wire groove 21 of the base plate 2, and the working hole 61 and the blade 31 of the cutting mechanism 3 are vertically aligned. In this embodiment, the cover plate 6 is designed with two working holes 61, which correspond to the two cutting steps of obtaining the conductor in the core wire. Since the wire often includes multiple core wires, two types of wire grooves 21 can be set on the fixture base plate 2, one for the wire and one for the core wire. In this embodiment, the working hole 61 near the cutting mechanism 3 is used for cutting the wire, while the through hole away from the cutting mechanism 3 is used for cutting the core wire. During the segmented cutting operation, the wire is first placed into the wire groove 21 under the cover plate 6, and the cutting mechanism 3 sinks down to cut the wire sheath to obtain the core wire. Then, the core wire is placed into the other wire groove 21 under the cover plate 6, and the other blade 31 of the cutting mechanism 3 cuts the sheath of the core wire through another through hole. The blade 31 cuts into the wire or core wire sheath along the axial direction of the working hole 61 under the drive of the servo motor. The cutting depth is controlled by the stroke of the blade holder 33. However, traditional wire stripping equipment lacks a fixed structure to cover the wire, and manual operation requires repeated adjustment of the wire position to align with the blade 31.

[0021] Furthermore, a wire threader 7 is provided between the wire pulling mechanism 5 and the cover plate 6. The wire threader 7 generally refers to a guide device used to guide the movement path of the wire, and can be implemented using a structure with rollers or guide sleeves, forming a channel inside that matches the outer diameter of the wire. In this embodiment, the wire threader 7 is a guide component located between the cover plate 6 and the wire pulling mechanism 5, and can be implemented using a metal block with a flared structure 71, used to guide the wire along a predetermined path into the wire pulling mechanism 5. The wire threader 7 is located at the end of the cover plate 6, and its flared structure 71 guides the wire from below the cover plate 6 into the clamp 52 of the wire pulling mechanism 5, preventing the wire from bending or shifting during the stripping process. The wire threader 7 further eliminates the swaying error at the end of the wire, thereby maintaining axial consistency during long-distance stripping.

[0022] During equipment operation, first move the wire feeding tension mechanism 4 and the cutting mechanism 3 upwards and open the cover plate 6. After the wire or core wire is placed in the wire groove 21 of the fixture base plate 2, the wire feeding tension mechanism 4 moves downwards and applies contact pressure to the wire or core wire. By rotating the wire feeding tension mechanism 4, the wire or core wire is pushed forward and reaches below the cutting mechanism 3. The cover plate 6 is then closed and locked. Continue rotating the wire feeding tension mechanism 4 to allow the wire or core wire to emerge from the other end of the cover plate 6. The wire or core wire is then manually guided through the threader 7 and fixed to the wire pulling machine. In the fixture 52 of component 5, the cutting mechanism 3 descends and contacts the wire or core wire through the working hole 61 on the cover plate 6. During the cutting process, the wire feeding tension mechanism 4 applies constant tension to the wire through the adjustable pressure roller 41 to prevent the wire upstream of the cutting mechanism 3 from slack during the cutting process. The wire pulling mechanism 5 drives the sliding seat plate 51 to move along the set route through the second lead screw 54, which drives the fixture 52 to clamp the wire and perform axial traction at a set speed and stroke, so that the cutting mechanism 3 can stably glide across the surface of the wire or core wire. The synergistic effect of the fixture base plate 2, the wire feeding tension mechanism 4, and the threader 7 ensures that the slender wire remains straight during long-distance traction, reducing uneven cutting depth caused by lateral deviation. This allows even slender wires with a diameter of less than 1 mm and a length of more than 10 cm to be cut stably. The solution achieves automated control of cutting and traction through mechanical structure, eliminating force and angle deviations caused by human factors. It effectively avoids the problem of wire shaking when pulled after cutting, which is common in existing technologies due to the lack of a dedicated tension control mechanism. The application of the wire feeding tension mechanism ensures that the wire is always taut, thereby achieving automated processing of stripping thin and long wires. This effectively avoids damage to the core wire caused by manual operation, and the device greatly improves the efficiency and success rate of cutting and stripping thin and long wires.

[0023] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any changes or modifications made in accordance with the claims and description of the present utility model should fall within the scope of the patent of the present utility model.

Claims

1. A wire stripping device suitable for use with elongate wire, characterised in that: The device includes a base, a fixture base plate with a wire groove mounted on the base, and a cutting mechanism that can move up and down above the fixture base plate. The fixture base plate is also provided with a wire feeding tension mechanism, which is located upstream of the cutting mechanism. A wire pulling mechanism is provided downstream of the cutting mechanism.

2. A wire stripping device for elongate wire according to claim 1 wherein: The cutting mechanism includes a fixed bracket fixedly mounted on the base and a blade holder slidably mounted on the fixed bracket. A blade is detachably mounted on the blade holder, and the blade holder is signal-connected to a servo motor that controls the up-and-down sliding of the blade holder.

3. A wire stripping device for elongate wire according to claim 1 wherein: The wire feeding tension mechanism includes a roller mounting base that can move up and down. A rotatable roller is mounted on the roller mounting base via bearings. The central axis of the roller is parallel to the base plate of the fixture and perpendicular to the wire groove.

4. A wire stripping device for elongate wire according to claim 3 wherein: The surface of the roller is coated with a rubber layer.

5. A wire stripping device for elongate wire according to claim 3 wherein: The roller mounting base is rotatably connected to two first lead screws with vertical central axes via bearings. An adjustment mechanism is provided between the first lead screws to drive them to rotate synchronously. The base is provided with a first threaded structure that cooperates with the first lead screws.

6. A wire stripping device for elongate wire according to claim 1 wherein: The wire pulling mechanism includes a sliding base plate and a clamp for clamping the wire mounted on the upper surface of the sliding base plate; a second lead screw with a horizontal central axis is installed in the base, a second thread structure that cooperates with the second lead screw is provided below the sliding base plate, and a limiting groove parallel to the central axis of the second lead screw is provided on the base, and the sliding base plate is inserted into the limiting groove.

7. A wire stripping device for elongate wire according to claim 1 wherein: A lockable cover plate is hinged to the base plate of the fixture. The cover plate has a working hole that cooperates with the cutting mechanism, and the blade of the cutting mechanism extends into the working hole.

8. A wire stripping device for elongate wire according to claim 7 wherein: A threader is provided between the wire pulling mechanism and the cover plate.

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