A wire harness skin cutting mechanism, processing device and processing method

Abstract

The application relates to the technical field of wire harness processing and manufacturing, and discloses a wire harness skin cutting mechanism, a processing device and a processing method, which comprise an upper skin cutting knife and a lower skin cutting knife, the upper skin cutting knife and the lower skin cutting knife are oppositely arranged and can approach or move away from each other, V-shaped cutting grooves are formed on the opposite sides of the upper skin cutting knife and the lower skin cutting knife, the V-shaped cutting grooves comprise two oppositely arranged oblique groove walls, the edges of the two oblique groove walls close to the electric wire are formed into oblique cutting edges, when the upper skin cutting knife and the lower skin cutting knife are close to each other, the oblique cutting edges cut into the wire skin along the circumferential direction and keep an avoiding gap with the wire core, the two V-shaped cutting grooves cooperatively form an avoiding cavity for accommodating the wire core, and the application has the effects of avoiding wire core damage and reducing the peeling resistance.

Description

Technical Field

[0001] This application relates to the technical field of wire harness processing and manufacturing, and in particular to a wire harness cutting mechanism, processing device and processing method. Background Technology

[0002] A wire harness is an electrical connection assembly formed by combining one or more wires according to a predetermined route, length, or sequence. It is often used for signal transmission or power transmission between different electrical components.

[0003] A wire harness includes a connector and multiple wires inserted into the connector. Each wire consists of a core and a sheath covering the core. During connector assembly, terminal connection, or soldering, it is usually necessary to remove part of the sheath from the ends of the wires to expose the cores for subsequent connection to connectors, terminals, or other conductive components.

[0004] In related technologies, wire end stripping is usually done by cutting and then pulling. When cutting the insulation, the cutter cuts into the insulation but should avoid cutting the wire core; after cutting, the insulation end is moved relative to the wire core and peeled off from the core by pulling.

[0005] During the above processing, the depth of the cutter needs to be limited. If the cutter goes in too deep, it can easily damage the wire core; if the cutter goes in too shallow, the wire sheath will not be easily broken after cutting, requiring a large traction force during subsequent peeling, which can easily cause the wire sheath to be stretched, the wire core to be damaged by stress, or the peeling process to be unstable. Summary of the Invention

[0006] In order to improve the problem that existing wire cutting mechanisms cannot simultaneously avoid core damage and reduce stripping resistance, this application provides a wire harness cutting mechanism, processing device and processing method.

[0007] This application provides a wire harness cutting mechanism, processing device, and processing method, which adopts the following technical solution: A wire harness cutting mechanism includes an upper cutting blade and a lower cutting blade, which are arranged opposite to each other and can move closer or further apart. Each of the upper and lower cutting blades has a V-shaped cutting groove on its opposite side. Each V-shaped cutting groove includes two oppositely arranged inclined groove walls, and the edges of the two inclined groove walls near the wire form inclined cutting edges. When the upper and lower cutting blades are close together, the inclined cutting edges cut into the wire sheath circumferentially and maintain a clearance gap with the wire core. The two V-shaped cutting grooves cooperate to form a clearance cavity to accommodate the wire core.

[0008] By adopting the above technical solution, when the upper and lower cutting blades are close together, the oblique cutting edge can cut into the wire insulation from multiple circumferential positions. Compared with the traditional flat blade that only cuts into the wire insulation from the top and bottom sides, this application can increase the circumferential range of the wire insulation being cut at the same safe depth of cut, making the wire insulation easier to break during subsequent stripping, thereby reducing the pulling force required for stripping. The two V-shaped cutting grooves cooperate to form a clearance cavity to accommodate the wire core, so that the oblique cutting edge maintains a clearance gap with the wire core when cutting into the wire insulation, reducing the risk of damaging the wire core due to deeper cuts. Even if the wire core in the wire is somewhat eccentric relative to the wire insulation, or if the wire diameter and insulation thickness of different batches of wires fluctuate, this cutting mechanism can complete the wire insulation cutting at a relatively safe depth of cut, thereby improving the processing tolerance and adaptability to different specifications of wires, while also reducing stripping resistance and reducing the risk of core damage.

[0009] Optionally, both the upper and lower cutting blades are provided with multiple V-shaped cutting grooves. The multiple V-shaped cutting grooves are arranged at intervals along the length direction of the upper and lower cutting blades, and the V-shaped cutting grooves on the upper cutting blade and the V-shaped cutting grooves on the lower cutting blade are arranged opposite to each other along the approach direction of the upper and lower cutting blades and correspond one to one.

[0010] By adopting the above technical solution and setting multiple one-to-one corresponding V-shaped cutting grooves, multiple wires in the wire harness can enter the corresponding cutting positions for synchronous cutting, avoiding multiple wires sharing the same cutting area and causing squeezing or displacement, thereby improving the cutting efficiency.

[0011] A wire harness processing apparatus includes an upper base, a lower base, and a wire harness cutting mechanism, wherein the upper base and the lower base are arranged opposite to each other and can move closer to or further away from each other; the upper cutting blade is installed below the upper base, and the lower cutting blade is installed above the lower base.

[0012] By adopting the above technical solution and the above-mentioned cutting mechanism, the wire harness processing device can improve the degree of wire sheath pre-cutting while ensuring the wire core avoidance, reduce the subsequent stripping resistance, and thus improve the stability and yield of wire harness processing.

[0013] Optionally, the upper base is provided with a comb-shaped positioning element, which includes a plurality of spaced comb teeth, and a positioning groove for accommodating wires is formed between two adjacent comb teeth. The positioning groove corresponds one-to-one with the position of the V-shaped cutting groove.

[0014] By adopting the above technical solution, multiple wires are sorted and positioned before cutting the insulation, so that the wires are less likely to deviate or squeeze each other during the closing process of the blade. This allows the V-shaped cutting groove to stably correspond to the insulation position of each wire, ensuring that the cutting depth and cutting position are more consistent when cutting multiple wires simultaneously, and reducing problems such as off-center cutting, missed cutting, and core damage caused by uneven wire bundle arrangement.

[0015] Optionally, the upper base has a mounting cavity, and the lower part of the upper base has a mounting hole communicating with the mounting cavity. The mounting cavity is provided with a mounting plate, an elastic element and a control switch located above the mounting plate. The upper end of the comb teeth passes through the mounting hole and is connected to the lower side of the mounting plate. The control switch is located on the path of the mounting plate moving away from the mounting hole. The elastic element is in a compressed state, with one end of the elastic element abutting against the upper end of the mounting plate and the other end of the elastic element abutting against the inner wall of the mounting cavity away from the mounting hole. When the end of the comb teeth is facing the wire and is blocked by the wire, the comb-shaped positioning element is forced to push the mounting plate upward against the elastic force of the elastic element to trigger the control switch.

[0016] By adopting the above technical solution, when the comb teeth are facing the wire but not entering the gap between adjacent wires, the comb-shaped positioning component is forced back and triggers the control switch, thereby providing a signal basis for equipment shutdown, alarm or repositioning, reducing the problems of misalignment, crushing and core damage caused by direct die-cutting due to uneven wire arrangement, and improving the safety and stability of synchronous processing of multiple wires.

[0017] Optionally, the upper end of the upper base is also threaded with a pre-tightening adjusting bolt. The bottom end of the pre-tightening adjusting bolt passes into the mounting cavity and abuts against the end of the elastic element away from the mounting plate. The shank of the pre-tightening adjusting bolt is threaded with a locking nut for abutting against the upper base.

[0018] By adopting the above technical solution, the pre-tightening adjusting bolt is rotated to adjust the force of the elastic element on the mounting plate, that is, to adjust the force required for the comb teeth to retract when obstructed, so that the comb tooth positioning detection can adapt to wires with different diameters and different sheath materials; according to the wire diameter, sheath hardness and processing stability requirements, the retraction resistance of the comb teeth is adjusted, and then the pre-tightening adjusting bolt is locked by the locking nut; the locking nut can prevent the pre-tightening adjusting bolt from loosening during equipment operation, ensure the stability of the pre-tightening amount of the elastic element, thereby improving the reliability of abnormal positioning detection.

[0019] Optionally, the wire harness cutting mechanism is provided in two sets, namely a first cutting mechanism and a second cutting mechanism; the first cutting mechanism and the second cutting mechanism are arranged at intervals along the arrangement direction of the wire length.

[0020] By adopting the above technical solution, the two sets of cutting mechanisms can pre-cut different positions of the raw material line, eliminating the need for multiple devices to process the raw materials, reducing processing steps and improving processing efficiency.

[0021] Optionally, a cutting mechanism is also included, which is disposed between the first and second cutting mechanisms; the cutting mechanism is used to cut the raw material wire to separate the tail end of the upper section of wire and the head end of the lower section of wire; the second cutting mechanism is used to cut the wire sheath at the tail end of the upper section of wire, and the first cutting mechanism is used to cut the wire sheath at the head end of the lower section of wire.

[0022] By adopting the above technical solution, the cutting action can simultaneously serve the forming of the tail end of the previous section of wire and the forming of the head end of the next section of wire. When the cutting mechanism cuts the wire sheath of the raw material wire, it does not need to reposition the adjacent ends, which can reduce the end length error and improve the efficiency of continuous production.

[0023] A method for processing wire harnesses, applied to the aforementioned wire harness processing apparatus, characterized by comprising the following steps: S1. The raw material line is transferred to the first cutting mechanism. The upper and lower cutting blades of the first cutting mechanism approach each other, and the oblique cutting edge cuts into the circumference of the wire and forms a clearance cavity. Then, the raw material line is driven to move away from the second cutting mechanism, so that the wire sheath used to form the head end of the wire is pulled off and peeled off. S2. Remove the raw material wire with the stripped ends from the processing device, and insert the wire cores in the raw material wire used to form the wire ends into the external connector for assembly. S3. The raw material wire equipped with the connector is moved back to the processing device. The cutting mechanism cuts the raw material wire, separating the tail end of the upper section of the wire and the head end of the lower section of the wire. At the same time, the second insulation cutting mechanism cuts the tail end of the upper section of the wire and drives the upper section of the wire away from the first insulation cutting mechanism so that the insulation at the tail end of the wire is pulled off and peeled off. Then the finished product is removed. S4. During the execution of step S3, the first cutting mechanism simultaneously performs the cutting operation of the oblique cutting edge cutting along the circumference of the wire skin at the beginning of the next section of wire in step S1.

[0024] By adopting the above technical solution, this processing method connects the stripping of the wire's first end, the stripping of the connector's last end after assembly, and the pre-stripping of the first end of the next wire in the same processing flow, so that the end processing on both sides of the cutting position can be continuously connected, reducing repeated positioning and waiting time, and improving continuous processing efficiency; by using V-shaped cutting to reduce stripping tension, the stripping length and wire core exposure state at the first and last ends are more stable, which is conducive to improving the yield of connector wire harness products.

[0025] Optionally, before performing the oblique cutting edge cutting along the circumferential direction in steps S1 and S3, a guiding and positioning step is also included: As the comb-shaped positioning element approaches the multiple wires along with the upper base, each wire enters the positioning groove formed between two adjacent comb teeth, guiding each wire to align with the corresponding V-shaped cutting groove.

[0026] In summary, this application includes the following beneficial technical effects: when the upper and lower cutting blades are close together, the oblique cutting edge can cut into the wire sheath from multiple circumferential positions, increasing the circumferential cutting range of the wire sheath without increasing the depth of cut, making the wire sheath easier to break during subsequent peeling, thereby reducing the pulling force required for peeling; the two V-shaped cutting grooves cooperate to form a clearance cavity to accommodate the wire core, so that the oblique cutting edge maintains a clearance gap with the wire core when cutting into the wire sheath, reducing the risk of the cutter damaging the wire core; this cutting mechanism can simultaneously reduce peeling resistance and reduce the risk of core damage, and improve the processing adaptability to wire core eccentricity, wire diameter fluctuation, and wire sheath thickness fluctuation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application; Figure 2 This is a schematic diagram highlighting the peeling mechanism in Example 1; Figure 3 This is a side view of Embodiment 2; Figure 4 It is along Figure 3 Sectional view of line AA in the middle; Figure 5 yes Figure 4 Enlarged diagram of part B.

[0028] Reference numerals: 1. Frame; 11. Lifting drive component; 2. Upper base; 21. Mounting cavity; 22. Mounting hole; 23. Mounting plate; 24. Elastic component; 25. Control switch; 26. Threaded hole; 27. Pre-tightening adjusting bolt; 28. Locking nut; 3. Lower base; 4. Peeling mechanism; 41. Upper peeling knife; 42. Lower peeling knife; 43. V-shaped cutting groove; 5. Cutting mechanism; 51. Upper cutting knife; 52. Lower cutting knife; 6. Supporting mechanism; 7. Clamping mechanism; 8. Comb-shaped positioning component; 81. Comb teeth. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail. Example

[0030] This embodiment discloses a wire harness cutting mechanism 4, a processing device, and a processing method. (Refer to...) Figure 1A wire harness processing apparatus is used for cutting, stripping, slitting, and assembling raw wires with connectors. The raw wires are uncut, continuous incoming materials. After cutting, the raw wires are formed into electrical wires. The electrical wires include a core and a sheath, with the sheath covering the core. The electrical wires include a start end and a stop end, with the start end used for mating with a connector. After the start end is inserted into the connector, it forms a wire harness together with the connector.

[0031] Reference Figure 1 The wire harness processing device includes a frame 1, an upper base 2, a lower base 3, a cutting mechanism 4, a cutting mechanism 5, a supporting mechanism 6, and a clamping mechanism 7.

[0032] Reference Figure 1 Both the upper base 2 and the lower base 3 are mounted on the frame 1, and are positioned opposite each other, with the upper base 2 located directly above the lower base 3. The upper base 2 and the lower base 3 can move closer to or further apart from each other.

[0033] Reference Figure 1 At least one of the upper base 2 and the lower base 3 is connected to a lifting drive component 11. The lifting drive component 11 is mounted on the frame 1 and is used to drive the upper base 2 and the lower base 3 to move closer or further apart. The lifting drive component 11 can be a drive assembly consisting of a cylinder, an electric cylinder, a servo motor and a lead screw, or other drive structures capable of linear reciprocating motion.

[0034] Reference Figure 1 and Figure 2 The sheathing mechanism 4 is used to shear the raw material line or the wire formed by cutting the raw material line. The sheathing mechanism 4 includes an upper sheathing blade 41 and a lower sheathing blade 42. The upper sheathing blade 41 is installed below the upper base 2, and the lower sheathing blade 42 is installed above the lower base 3. The upper sheathing blade 41 and the lower sheathing blade 42 are arranged opposite to each other, and the upper sheathing blade 41 is located directly above the lower sheathing blade 42.

[0035] Reference Figure 2 When the upper base 2 moves closer to the lower base 3, the upper base 2 drives the upper cutting blade 41 to move closer to the lower cutting blade 42, so that the upper cutting blade 41 and the lower cutting blade 42 form a closed cutting state; when the upper base 2 moves away from the lower base 3, the upper cutting blade 41 moves away from the lower cutting blade 42 along with the upper base 2, so that the upper cutting blade 41 and the lower cutting blade 42 form an open state.

[0036] Reference Figure 2The upper cutting blade 41 has multiple cutting areas on the side facing the lower cutting blade 42, and the lower cutting blade 42 has multiple cutting areas on the side facing the upper cutting blade 41. These cutting areas are spaced apart along the length of the upper and lower cutting blades 41 and 42, respectively. The multiple cutting areas on the upper cutting blade 41 and the multiple cutting areas on the lower cutting blade 42 are arranged opposite each other along the approach direction of the upper and lower cutting blades 41 and 42, and correspond one-to-one. Each corresponding cutting area is used to process one wire harness. In the accompanying drawings, this embodiment exemplifies four cutting areas on both the upper cutting blade 41 and the lower cutting blade 42. In other embodiments, one cutting area is provided on both the upper cutting blade 41 and the lower cutting blade 42.

[0037] Reference Figure 2 Both the cutting areas on the upper cutting blade 41 and the lower cutting blade 42 include multiple V-shaped cutting grooves 43. These V-shaped cutting grooves 43 are arranged at intervals along the length of the upper cutting blade 41 and the lower cutting blade 42. Each V-shaped cutting groove 43 includes two opposing inclined groove walls, with the edges of the two inclined groove walls near the wire forming inclined cutting edges.

[0038] In the corresponding cutting area, multiple V-shaped cutting grooves 43 on the upper cutting blade 41 and multiple V-shaped cutting grooves 43 on the lower cutting blade 42 are arranged opposite to each other along the approach direction of the upper cutting blade 41 and the lower cutting blade 42, and correspond one to one. The multiple corresponding V-shaped cutting grooves 43 correspond to multiple wires in the wire harness, so that multiple wires can enter the corresponding cutting position and be cut synchronously.

[0039] Reference Figure 2 The upper base 2 is also provided with multiple comb-shaped positioning elements 8, the number of which is the same as the number of cutting areas on the upper cutting blade 41. The multiple comb-shaped positioning elements 8 are distributed at intervals along the length of the upper cutting blade 41. Each comb-shaped positioning element 8 corresponds to a cutting area on the upper cutting blade 41. The comb-shaped positioning elements 8 are located at one end of the upper cutting blade 41 along the raw material conveying direction.

[0040] Reference Figure 2 The comb-shaped positioning member 8 includes a plurality of spaced-apart comb teeth 81, with a positioning groove formed between two adjacent comb teeth 81 for accommodating wires. The positioning grooves correspond one-to-one with the V-shaped cutting grooves 43, so that the wires entering the positioning grooves can be aligned with the corresponding V-shaped cutting grooves 43.

[0041] Reference Figure 1 and Figure 2As the upper base 2 approaches the lower base 3, the comb-shaped positioning member 8 first approaches multiple wires, and each wire enters its corresponding positioning groove. The comb teeth 81 separate adjacent wires, maintaining a predetermined distance between them before the insulation is cut. Subsequently, the upper cutting blade 41 and the lower cutting blade 42 continue to approach each other and cut the insulation of each wire through the corresponding V-shaped cutting groove 43. Thus, the comb-shaped positioning member 8 and the V-shaped cutting groove 43 form a front-to-back positioning relationship, reducing the possibility of wires shifting, deviating, or being squeezed together during the closing of the blades.

[0042] When the upper cutting blade 41 and the lower cutting blade 42 switch from the open state to the closed cutting state, the two oblique cutting edges of the upper cutting blade 41 cut into the wire insulation from one side of the wire's outer circumference, and the two oblique cutting edges of the lower cutting blade 42 cut into the wire insulation from the opposite side of the wire's outer circumference. The insulation of the same wire can be cut in segments at multiple locations in the circumferential direction. This circumferential cutting does not require the insulation to be completely severed along the entire circumference, but rather means that compared to a flat blade cutting only from opposite sides, the oblique cutting edges can create more cutting positions on the outer circumference of the insulation, making the insulation easier to break during subsequent stripping.

[0043] Reference Figure 1 and Figure 2 After the upper cutting blade 41 and the lower cutting blade 42 close, the two opposing V-shaped cutting grooves 43 work together to form a clearance cavity. This clearance cavity is located between the upper cutting blade 41 and the lower cutting blade 42 and serves to accommodate or avoid the wire core. When the oblique cutting edge cuts into the wire insulation, a clearance gap is maintained between it and the wire core, allowing the cutting mechanism 4 to increase the circumferential cutting range of the insulation without deepening the cut to the wire core. This reduces the traction force required to subsequently break the insulation and decreases the risk of cutting the wire core.

[0044] Reference Figure 2 The upper cutting blade 41 can be detachably installed on the upper base 2 via screws, pressure blocks, blade holders, or snap-fit ​​structures, and the lower cutting blade 42 can be detachably installed on the lower base 3 via screws, pressure blocks, blade holders, or snap-fit ​​structures. This detachable installation method facilitates the replacement of the upper cutting blade 41 and the lower cutting blade 42 according to different wire diameters, wire quantities, or cutting requirements, and also facilitates maintenance or replacement after blade wear.

[0045] Reference Figure 2 In this embodiment, the peeling mechanism 4 is provided in two sets, namely the first peeling mechanism and the second peeling mechanism. Both the first peeling mechanism and the second peeling mechanism can adopt the structure of the upper peeling knife 41 and the lower peeling knife 42 described above. The first peeling mechanism and the second peeling mechanism are arranged at intervals along the length direction of the raw material line so as to cut the skin at different positions along the length direction of the raw material line respectively.

[0046] Reference Figure 2 The cutting mechanism 5 is located between the first and second cutting mechanisms. The cutting mechanism 5 is used to cut the raw material wire, separating it into an upper section of wire and a lower section of wire. After the cutting mechanism 5 cuts the raw material wire, the end of the upper section of wire near the cutting position becomes the tail end, and the end of the lower section of wire near the cutting position becomes the head end.

[0047] Reference Figure 2 The first cutting mechanism is used to cut the insulation at the beginning of the next section of wire, and the second cutting mechanism is used to cut the insulation at the end of the previous section of wire. During the continuous processing of the raw material line, the ends on both sides of the cutting mechanism 5 can be pre-cut by the first and second cutting mechanisms respectively, so that the stripping of the end of the previous section of wire and the stripping of the beginning of the next section of wire can be completed continuously around the same cutting position.

[0048] Reference Figure 2 The cutting mechanism 5 includes an upper cutting blade 51 and a lower cutting blade 52. The upper cutting blade 51 is disposed below the upper base 2, and the lower cutting blade 52 is disposed above the lower base 3, with the upper cutting blade 51 and the lower cutting blade 52 positioned opposite each other. When the upper cutting blade 51 and the lower cutting blade 52 approach each other, the cutting mechanism 5 cuts the raw material line located between the first and second cutting mechanisms. In other embodiments, the cutting mechanism 5 may also employ a shearing blade or a punching blade, as long as it can cut the raw material line.

[0049] Reference Figure 1 and Figure 2 The supporting mechanism 6 is mounted on the frame 1 and is located on the side of the first peeling mechanism away from the cutting mechanism 5. The supporting mechanism 6 is used to support the raw material line during the peeling process, so that the multiple wires in the raw material line are held in a predetermined processing position between the upper peeling blade 41 and the lower peeling blade 42.

[0050] Reference Figure 1 and Figure 2 The supporting mechanism 6 can clamp or support the raw material wire and drive it to move along its length, so that the wire sheath at the first end cut by the first sheathing mechanism moves relative to the wire core and is pulled off. The supporting mechanism 6 can also transfer the raw material wire with the stripped wire end to an external assembly station, so that the exposed wire core at the wire end can be plugged into the connector for assembly; after the connector assembly is completed, the supporting mechanism 6 can move the raw material wire with the connector back to the processing position where the first and second sheathing mechanisms are located.

[0051] Reference Figure 1 and Figure 2The clamping mechanism 7 is mounted on the frame 1 and is located on the side of the second cutting mechanism away from the cutting mechanism 5. The clamping mechanism 7 is used to clamp the wire harness equipped with the connector or to clamp the connector, so that the wire in the wire harness moves relative to the second cutting mechanism, so that the tail end of the wire after being cut by the second cutting mechanism is pulled off and stripped, and the stripped finished wire harness is removed from the processing device.

[0052] Reference Figure 1 and Figure 2 During processing, the supporting mechanism 6 moves the raw material wire to the first cutting mechanism, which cuts the insulation at the position on the raw material wire used to form the beginning of the next wire segment. Subsequently, the supporting mechanism 6 moves the raw material wire away from the second cutting mechanism, causing the insulation at that position to be pulled off and stripped to form the beginning wire core that can be inserted into the connector. After the beginning wire is stripped, the supporting mechanism 6 transfers the raw material wire to the external assembly station and assembles the beginning wire core with the external connector. After assembly, the supporting mechanism 6 returns the raw material wire with the connector to the processing device.

[0053] Subsequently, the cutting mechanism 5 cuts the raw material wire, the second insulation cutting mechanism cuts the insulation at the tail end of the previous wire segment, and the clamping mechanism 7 clamps the wire harness or connector equipped with the connector and moves it away from the first insulation cutting mechanism, causing the insulation at the tail end of the previous wire segment to be pulled off. Then, the clamping mechanism 7 removes the finished wire harness. At the same time, the first insulation cutting mechanism can cut the insulation at the beginning of the next wire segment. Through this continuous processing method, the processing of the tail end of the previous wire segment and the processing of the beginning of the next wire segment can be completed in the same processing cycle.

[0054] A method for processing wire harnesses, applied to the aforementioned wire harness processing apparatus, comprises the following steps: S1. The raw material line is transferred to the first cutting mechanism. The upper cutting blade 41 and the lower cutting blade 42 of the first cutting mechanism approach each other. The oblique cutting edge cuts into the circumference of the wire and forms a clearance cavity. Then, the raw material line is driven to move away from the second cutting mechanism, so that the wire sheath used to form the head end of the wire is pulled off and peeled off. S2. Remove the raw material wire with the stripped ends from the processing device, and insert the wire cores in the raw material wire used to form the wire ends into the external connector for assembly. S3. The raw material wire equipped with the connector is moved back to the processing device. The cutting mechanism 5 cuts the raw material wire, separating the tail end of the upper section of the wire and the head end of the lower section of the wire. At the same time, the second insulation cutting mechanism cuts the tail end of the upper section of the wire and drives the upper section of the wire to move away from the first insulation cutting mechanism so that the insulation at the tail end of the wire is pulled off and peeled off. Then the finished product is removed. S4. During the execution of step S3, the first cutting mechanism simultaneously performs the cutting operation of the oblique cutting edge cutting along the circumference of the wire skin at the beginning of the next section of wire in step S1.

[0055] The implementation principle of Example 1 is as follows: The supporting mechanism 6 first feeds the uncut continuous raw material line into the first cutting mechanism. During the downward movement of the upper base 2, the comb-shaped positioning member 8 first separates and positions multiple lines, so that each line is aligned with the corresponding V-shaped cutting groove 43. Then the upper cutting blade 41 and the lower cutting blade 42 close, and use the corresponding oblique cutting edges to cut from multiple positions around the wire sheath. The wire core is avoided by the avoidance cavity formed by the two V-shaped cutting grooves 43, so that the wire sheath forms a pre-cut that is easy to break without damaging the wire core. The supporting mechanism 6 then pulls the raw material line, causing the insulation at the beginning to be broken and peeled off. The raw material line with the exposed core is then sent to the external assembly station for assembly with the connector. After assembly, the supporting mechanism 6 moves it back to the processing device. The cutting mechanism 5 cuts the raw material line to form the upper section of wire and the lower section of wire. At the same time, the second insulation cutting mechanism cuts the insulation at the end of the upper section of wire. The clamping mechanism 7 moves the connector or finished wire harness to peel off the insulation at the end. The first insulation cutting mechanism simultaneously cuts the insulation at the beginning of the lower section of wire, so that the stripping of the beginning, the assembly of the connector, the stripping of the end, and the pre-treatment of the beginning of the lower section are completed continuously. Example

[0056] Reference Figure 3 and Figure 4 The difference between this embodiment and embodiment 1 is that the comb-shaped positioning component 8 in this embodiment has an obstruction and retraction detection function, so that when the comb teeth 81 do not correctly enter between adjacent wires, the positioning abnormality can be identified in time, reducing the situation of miscutting, wire pressing or core damage caused by subsequent direct mold closing and sheath cutting.

[0057] Reference Figure 4 and Figure 5 The upper base 2 has multiple mounting cavities 21, each corresponding to a comb-shaped positioning element 8. The lower part of the upper base 2 has multiple mounting holes 22, all of which communicate with the mounting cavities 21.

[0058] Reference Figure 4 and Figure 5 The mounting cavity 21 is provided with a mounting plate 23, an elastic element 24, and a control switch 25. The mounting plate 23 is movably disposed within the mounting cavity 21 and can move in a direction close to or away from the mounting hole 22.

[0059] Reference Figure 4 and Figure 5 The upper ends of the multiple comb teeth 81 of the comb-shaped positioning member 8 pass through the mounting hole 22 and are connected to the lower side of the mounting plate 23. The lower ends of the comb teeth 81 extend from the bottom of the upper base 2 so as to separate and position multiple wires when the upper base 2 is close to the lower base 3.

[0060] Reference Figure 5 The elastic element 24 is located above the mounting plate 23 and is in a compressed state. One end of the elastic element 24 abuts against the upper end of the mounting plate 23, and the other end abuts against the inner wall of the mounting cavity 21 on the side away from the mounting hole 22. The elastic element 24 is used to apply an elastic force to the mounting plate 23 in the direction of the mounting hole 22, so that the comb teeth 81 remain in a downwardly extended state when not obstructed. The elastic element 24 can be a compression spring, a spring sheet, an elastic block, or other elastic structure that can provide a restoring force. The accompanying drawings of this embodiment use a spring as an example.

[0061] Reference Figure 5 The control switch 25 is disposed within the mounting cavity 21 and located on the path along which the mounting plate 23 moves away from the mounting hole 22. The control switch 25 can be a micro switch, proximity switch, displacement sensor, or pressure sensor. In this embodiment, the control switch 25 is used to output a detection signal when the mounting plate 23 is pushed upward to a predetermined position. This detection signal can be transmitted to the control system of the processing device so that the control system can perform stop, alarm, reset, or repositioning actions.

[0062] Reference Figure 4 and Figure 5 During normal positioning, the comb-shaped positioning member 8 moves downward with the upper base 2, and the comb teeth 81 enter the gap between adjacent wires, allowing each wire to enter its corresponding positioning groove. At this time, the comb teeth 81 are not significantly obstructed by the wires, the mounting plate 23 will not move upward significantly against the elastic force of the elastic member 24, and the control switch 25 will not be triggered. Subsequently, the upper cutting blade 41 and the lower cutting blade 42 continue to approach and cut the insulation of the positioned wires.

[0063] Reference Figure 4 and Figure 5 When multiple wires are not aligned, or when the end of a comb tooth 81 is directly facing a wire but fails to enter the gap between adjacent wires, the comb tooth 81 will be blocked by the wire as it continues to descend on the upper base 2. The blocked comb tooth 81 causes the comb-shaped positioning member 8 and the mounting plate 23 to move away from the mounting hole 22. The mounting plate 23 overcomes the elastic force of the elastic member 24 and moves upward, triggering the control switch 25. This allows the processing device to identify abnormal positioning of the comb tooth 81 before cutting, preventing the upper cutting blade 41 and lower cutting blade 42 from continuing to close if the wire has not correctly entered the corresponding V-shaped cutting groove 43.

[0064] Reference Figure 5The upper base 2 has a threaded hole 26 at its upper end, which communicates with the mounting cavity 21. A preload adjusting bolt 27 is threaded into the threaded hole 26. The bottom end of the preload adjusting bolt 27 passes into the mounting cavity 21 and abuts against the upper end of the elastic element 24. A locking nut 28 is threaded onto the shank of the preload adjusting bolt 27, which abuts against the upper end of the upper base 2. The locking nut 28 reduces the possibility of the preload adjusting bolt 27 loosening due to equipment vibration, keeps the preload of the elastic element 24 stable, and ensures consistent triggering states for abnormal detection of the comb teeth 81.

[0065] Reference Figure 5 When the preload adjusting bolt 27 is screwed into the mounting cavity 21, the compression of the elastic element 24 increases, and the force required to move the mounting plate 23 upward after the comb teeth 81 are obstructed increases. When the preload adjusting bolt 27 is screwed out in a direction away from the mounting cavity 21, the compression of the elastic element 24 decreases, and the comb teeth 81 are more likely to retract after being obstructed and trigger the control switch 25. By rotating the preload adjusting bolt 27, the initial compression of the elastic element 24 can be adjusted, changing the initial elastic force exerted by the elastic element 24 on the mounting plate 23.

[0066] The implementation principle of Example 2 is as follows: When the comb-shaped positioning member 8 normally enters between adjacent wires, the mounting plate 23 is held in its initial position under the action of the elastic member 24, and the control switch 25 is not triggered; when the end of the comb tooth 81 hits the wire and cannot enter the positioning gap normally, the comb tooth 81 is obstructed and floats up, driving the mounting plate 23 to trigger the control switch 25, so that the processing device can identify positioning abnormalities before cutting the insulation. The pre-tightening adjusting bolt 27 is used to change the initial force of the elastic member 24 on the mounting plate 23, so that the detection structure can be adapted to wires with different diameters and different insulation materials, and the locking nut 28 is used to keep the pre-tightened state stable after adjustment.

[0067] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. A wire harness cutting mechanism, comprising an upper cutting blade (41) and a lower cutting blade (42), the upper cutting blade (41) and the lower cutting blade (42) being arranged opposite to each other and capable of approaching or moving away from each other; characterized in that: The upper cutting blade (41) and the lower cutting blade (42) each have a V-shaped cutting groove (43) on their opposite sides. The V-shaped cutting groove (43) includes two oppositely arranged inclined groove walls. The edges of the two inclined groove walls near the wire harness side form inclined cutting edges. When the upper cutting blade (41) and the lower cutting blade (42) are close together, the inclined cutting edges cut into the circumference of the wire sheath and maintain a clearance gap with the wire core. The two V-shaped cutting grooves (43) cooperate to form a clearance cavity to accommodate the wire core.

2. The wire harness cutting mechanism according to claim 1, characterized in that: Both the upper cutting blade (41) and the lower cutting blade (42) are provided with a plurality of V-shaped cutting grooves (43). The plurality of V-shaped cutting grooves (43) are arranged at intervals along the length direction of the upper cutting blade (41) and the lower cutting blade (42), and the V-shaped cutting grooves (43) on the upper cutting blade (41) and the V-shaped cutting grooves (43) on the lower cutting blade (42) are arranged opposite to each other along the approach direction of the upper cutting blade (41) and the lower cutting blade (42) and correspond one to one.

3. A wire harness processing apparatus, characterized in that: The device includes an upper base (2), a lower base (3), and a wire harness cutting mechanism (4) as described in claim 1 or 2. The upper base (2) and the lower base (3) are arranged opposite to each other and can move closer or further apart. The upper cutting blade (41) is installed below the upper base (2), and the lower cutting blade (42) is installed above the lower base (3).

4. The wire harness processing apparatus according to claim 3, characterized in that: The upper base (2) is provided with a comb-shaped positioning member (8), which includes a plurality of comb teeth (81) arranged at intervals. A positioning groove for accommodating wires is formed between two adjacent comb teeth (81), and the positioning groove corresponds one-to-one with the position of the V-shaped cutting groove (43).

5. The wire harness processing apparatus according to claim 4, characterized in that: The upper base (2) has a mounting cavity (21) inside, and a mounting hole (22) communicating with the mounting cavity (21) is provided below the upper base (2). A mounting plate (23) is provided in the mounting cavity (21), and an elastic element (24) and a control switch (25) are located above the mounting plate (23). The upper end of the comb teeth (81) passes through the mounting hole (22) and is connected to the lower side of the mounting plate (23). The control switch (25) is located on the mounting plate (23) away from the mounting hole. (22) On the path of movement, the elastic element (24) is in a compressed state. One end of the elastic element (24) abuts against the upper end of the mounting plate (23), and the other end of the elastic element (24) abuts against the inner wall of the mounting cavity (21) away from the mounting hole (22). When the end of the comb tooth (81) is facing the wire and blocked by the wire, the comb-shaped positioning element (8) is pushed by force against the mounting plate (23) and moves upward against the elastic force of the elastic element (24) to trigger the control switch (25).

6. The wire harness processing apparatus according to claim 5, characterized in that: The upper end of the upper base (2) is also threaded with a pre-tightening adjusting bolt (27). The bottom end of the pre-tightening adjusting bolt (27) is inserted into the mounting cavity (21) and abuts against the end of the elastic element (24) away from the mounting plate (23). The rod of the pre-tightening adjusting bolt (27) is threaded with a locking nut (28) for abutting against the upper base (2).

7. The wire harness processing apparatus according to claim 3, characterized in that: The wire harness cutting mechanism (4) is provided in two sets, namely the first cutting mechanism and the second cutting mechanism; the first cutting mechanism and the second cutting mechanism are arranged at intervals along the length of the wire.

8. The wire harness processing apparatus according to claim 7, characterized in that: It also includes a cutting mechanism (5), which is disposed between the first cutting mechanism and the second cutting mechanism; the cutting mechanism (5) is used to cut the raw material wire to separate the tail end of the upper section of wire and the head end of the lower section of wire; the second cutting mechanism is used to cut the wire sheath at the tail end of the upper section of wire, and the first cutting mechanism is used to cut the wire sheath at the head end of the lower section of wire.

9. A method for processing wire harnesses, applied to the wire harness processing apparatus as described in claim 8, characterized in that: Includes the following steps: S1. The raw material line is transferred to the first cutting mechanism. The upper cutting blade (41) and the lower cutting blade (42) of the first cutting mechanism approach each other. The oblique cutting edge cuts into the circumference of the wire and forms a clearance cavity. Then, the raw material line is driven to move away from the second cutting mechanism, so that the wire sheath used to form the head end of the wire is pulled off and peeled off. S2. Remove the raw material wire with the stripped ends from the processing device, and insert the wire cores in the raw material wire used to form the wire ends into the external connector for assembly. S3. The raw material wire equipped with the connector is moved back to the processing device. The cutting mechanism (5) cuts the raw material wire, separating the tail end of the upper section of the wire and the head end of the lower section of the wire. At the same time, the second insulation cutting mechanism (4) cuts the tail end of the upper section of the wire and drives the upper section of the wire to move away from the first insulation cutting mechanism so that the insulation at the tail end of the wire is pulled off and peeled off. Then the finished product is removed. S4. During the execution of step S3, the first cutting mechanism simultaneously performs the cutting operation of the oblique cutting edge cutting along the circumference of the wire skin at the beginning of the next section of wire in step S1.

10. A method for processing a wire harness according to claim 9, characterized in that: Before performing the oblique cutting edge cutting along the circumferential direction in steps S1 and S3, a guiding and positioning step is also included: The comb-shaped positioning element (8) moves close to the multiple wires along with the upper base (2), so that each wire enters the positioning groove formed between two adjacent comb teeth (81) to guide each wire to align with the corresponding V-shaped cutting groove (43).

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