A harness cutting and stripping device and control method

Abstract

The present application relates to the technical field of intelligent wiring harness processing, and particularly relates to a wiring harness cutting and stripping device and a control method, comprising: a rack, a first sliding seat and a second sliding seat; a cutting mechanism comprising a first cutting knife and a second cutting knife; a stripping mechanism comprising a first stripping knife and a second stripping knife, the contact surfaces of the first stripping knife and the second stripping knife with the first sliding seat and the second sliding seat are insulatively connected; a driving mechanism connected to the rack, used to drive the two first sliding seats and the second sliding seats to move closer to or farther away from each other; a transmission mechanism connected between the first sliding seat, the second sliding seat and the driving mechanism; a detection mechanism comprising a power supply and a capacitor detection module, the power supply is electrically connected to the first stripping knife and the second stripping knife, and the capacitor detection module is used to monitor the capacitance value between the first stripping knife and the second stripping knife. The present application monitors the change of the capacitance value in the stripping mechanism through the capacitor detection module, adjusts the distance between the stripping mechanism and the wiring harness, and improves the consistency and yield of the wiring harness processing.

Description

Technical Field

[0001] This invention relates to the field of intelligent wire harness processing technology, and in particular to a wire harness cutting and stripping device and control method. Background Technology

[0002] A wire harness is an integrated component composed of multiple wires or cables used to transmit electrical energy or signals, and is widely used in the automotive, aerospace, and electronic equipment industries. In the manufacturing process of wire harnesses, cutting and stripping are two preliminary steps. Cutting refers to cutting the wire harness to a predetermined length; stripping refers to removing the insulation from the ends of the wire harness, either before or after cutting, to expose the internal metal core wires, facilitating subsequent terminal crimping or soldering operations.

[0003] In existing technologies, wire harness cutting and stripping equipment typically uses a servo motor or cylinder to drive the stripping blade, which then performs the cutting and stripping of the wire harness according to a pre-set travel distance. However, in actual production, when processing a new specification of wire harness, the initial blade travel distance often fails to meet processing requirements due to differences in outer diameter, insulation thickness, core wire structure, and material hardness. Operators usually need to repeatedly adjust the blade travel distance based on their experience and perform multiple trial cuts to gradually correct the parameters until a suitable stripping effect is achieved. This process not only relies on operator experience and has a long debugging cycle but also suffers from inaccurate adjustments, affecting production efficiency and product consistency. Furthermore, if the blade travel distance is set too large during stripping, the stripping blade may scratch or even cut the internal metal core wire. Existing equipment typically lacks effective monitoring methods for the stripping process, making it difficult to promptly determine whether damage has occurred to the core wire. This can lead to defective products continuing to flow into subsequent processes, affecting product quality and reliability.

[0004] Therefore, there is an urgent need for a new wire harness cutting and stripping device to determine whether there is a risk of damage to the core wire by the cutting tool during the stripping process, and to promptly provide prompts or alarms when abnormalities occur, so as to prevent unqualified products from continuing to enter the subsequent processing stage, thereby improving the consistency and yield of wire harness processing while ensuring stripping efficiency. Summary of the Invention

[0005] In view of at least one of the above technical problems, the present invention provides a wire harness cutting and stripping device and control method, which improves the yield of wire harness stripping by structural improvement.

[0006] According to a first aspect of the present invention, a wire harness cutting and stripping device is provided, comprising: A frame, and a first sliding seat and a second sliding seat disposed on the frame and which may be relatively close to or far away from each other; The cutting mechanism includes a first cutter disposed on the first sliding seat and a second cutter disposed on the second sliding seat, for cutting the wire harness; The stripping mechanism includes a first stripping blade disposed on the first sliding seat and a second stripping blade disposed on the second sliding seat, for stripping the insulation from the end of the wire harness. The contact surfaces of the first stripping blade and the first sliding seat, and the contact surfaces of the second stripping blade and the second sliding seat, are insulated from each other. A drive mechanism, connected to the frame, is used to drive the two first sliding seats and the second sliding seat to move closer or further apart from each other; A transmission mechanism is connected between the first and second sliding seats and the drive mechanism, for transmitting the power of the drive mechanism to the first and second sliding seats; The testing mechanism includes a power supply and a capacitance testing module. One end of the power supply is electrically connected to the first stripper and the other end is electrically connected to the second stripper. The capacitance testing module is electrically connected to the first stripper and the second stripper and is used to monitor the capacitance value between the first stripper and the second stripper.

[0007] In some embodiments of the present invention, the peeling mechanism has two sets, the cutting mechanism has one set, the two sets of peeling mechanisms are respectively arranged on both sides of the cutting mechanism, and the wire harness passes through the peeling mechanism and the cutting mechanism axially at the same time.

[0008] In some embodiments of the present invention, the first cutting surface of the cutting blade is higher than the first peeling surface, and the second cutting surface of the cutting blade is higher than the second peeling surface.

[0009] In some embodiments of the present invention, the cutting angles of the first peeling blade and the second peeling blade are both 90 degrees, and the cutting angles of the first cutting blade and the second cutting blade are both greater than 90 degrees.

[0010] In some embodiments of the present invention, the first peeling blade and the first sliding seat, and the second peeling blade and the second sliding seat have an insulating pad on the contact side, and the first peeling blade and the second peeling blade have an insulating pressure block on the other side. Bolts pass through the interior of the first sliding seat and the second sliding seat, and the bolts connect the first peeling blade, the second peeling blade and the power supply.

[0011] In some embodiments of the present invention, the insulating pad includes a stripper contact surface and edge contact surfaces disposed on both sides of the stripper contact surface, wherein the width of the edge contact surfaces is the same as the thickness of the first stripper and the second stripper.

[0012] In some embodiments of the present invention, the insulating block has a connection hole inside, and the power supply passes through the connection hole.

[0013] In some embodiments of the present invention, the first sliding seat and the second sliding seat further have an insulating screw sleeve on the side away from the insulating pressure block, and the insulating screw sleeve is sleeved between the bolt and the first sliding seat and the second sliding seat.

[0014] In some embodiments of the present invention, the transmission mechanism includes a straight shaft fixedly connected to the drive mechanism, chain links respectively connected to both ends of the straight shaft, and a guide rail connected to the other end of the chain links and slidably disposed on the frame, wherein the other end of the guide rail is respectively connected to a first sliding seat and a second sliding seat.

[0015] According to a second aspect of the present invention, a method for controlling wire harness cutting and stripping is also provided, comprising the following steps: The wire harness is passed axially through the stripping mechanism and the cutting mechanism. The first sliding seat and the second sliding seat are driven to move closer to each other by the drive mechanism, so that the first stripping blade and the second stripping blade move toward the outer surface of the wire harness. Set the initial displacement distance between the first sliding seat and the second sliding seat, cut the wire harness with the first cutter and the second cutter, and perform a trial cut on the wire harness insulation with the first stripper and the second stripper. The capacitance value between the first stripper and the second stripper is monitored using a capacitance detection module. The cutting state of the stripper is determined based on the change in capacitance value, and the target displacement distance applicable to the wire harness of this specification is determined based on the results of multiple trial cuts. After determining the target displacement distance, the wire harness is batch-cut and stripped according to the target displacement distance, and the change of the capacitance value is continuously monitored during the processing. When an abnormal change in capacitance value is detected and reaches the preset alarm threshold, it is determined that the stripper poses a risk of damaging the wire harness core wire, and the control device stops operating and outputs an alarm signal.

[0016] The beneficial effects of this invention are as follows: By insulating the first and second stripping blades in the stripping mechanism to the first and second sliding seats respectively, and by setting up a detection mechanism composed of a power supply and a capacitance detection module, the first and second stripping blades form an independent detection circuit with the wire harness when closed. The capacitance detection module can monitor the capacitance value between the two stripping blades in real time. Real-time sensing of the cutting state is achieved by utilizing the difference in dielectric constant between the wire harness insulation and the metal core wire, and by utilizing the change in the equivalent medium between the two stripping blades, which causes a corresponding change in capacitance value. The capacitance change data obtained by the capacitance detection module reflects the relative positional relationship between the stripping blades and the metal core wire, providing reliable data support for precise control of the cutting depth. It automatically adapts to the actual size differences of wire harnesses of different batches and specifications, effectively avoiding insulation residue problems caused by shallow cutting blade feed and core wire damage problems caused by excessive cutting blade feed, significantly improving the consistency and yield of wire harness processing, thereby ensuring the long-term reliability of the finished wire harness. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the wire harness cutting and stripping device in an embodiment of the present invention; Figure 2 This is a schematic diagram of the cutting mechanism and the peeling mechanism in the wire harness cutting and peeling device in an embodiment of the present invention; Figure 3 This is a schematic diagram of the cutting mechanism and the peeling mechanism in the wire harness cutting and peeling device in an embodiment of the present invention from another perspective; Figure 4 This is a schematic diagram of the cutting mechanism and the peeling mechanism in the wire harness cutting and peeling device in an embodiment of the present invention from another perspective; Figure 5 As described in the embodiments of the present invention Figure 4 Structural sectional view along the BB direction; Figure 6 This is a schematic diagram of the structure of the wire harness cutting and stripping device in an embodiment of the present invention when the cutting mechanism and the stripping mechanism are close together; Figure 7 As described in the embodiments of the present invention Figure 2 Enlarged structural diagram at point A; Figure 8 This is a flowchart illustrating the steps of the wire harness cutting and stripping control method in an embodiment of the present invention.

[0019] Reference numerals: 1. Frame; 11. First sliding seat; 12. Second sliding seat; 2. Cutting mechanism; 21. First cutting blade; 22. Second cutting blade; 3. Peeling mechanism; 31. First peeling blade; 32. Second peeling blade; 33. Insulating pad; 33a. Peeling blade contact surface; 33b. Edge contact surface; 34. Insulating pressure block; 34a. Connecting hole; 35. Bolt; 36. Insulating threaded sleeve; 4. Drive mechanism; 5. Transmission mechanism; 51. Straight shaft; 52. Chain link; 53. Guide rail; 6. Power supply. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] like Figures 1 to 7 The wire harness cutting and stripping device shown includes: like Figure 1 As shown, there is a frame 1, and a first sliding seat 11 and a second sliding seat 12 disposed on the frame 1 and which can be relatively close to or far away from each other.

[0024] Cutting mechanism 2, such as Figure 2 , Figure 3 As shown, it includes a first cutter 21 disposed on the first sliding seat 11 and a second cutter 22 disposed on the second sliding seat 12, for cutting the wire harness; by means of the first sliding seat 11 and the second sliding seat 12 which can be relatively close to or far away from each other, the wire harness that has reached a set length can be continuously cut.

[0025] Peeling mechanism 3, such as Figure 2 , Figure 3As shown, it includes a first stripper 31 disposed on the first sliding seat 11 and a second stripper 32 disposed on the second sliding seat 12, for stripping the insulation from the ends of the wire harness. The contact surfaces of the first stripper 31 and the first sliding seat 11 and the second stripper 32 and the second sliding seat 12 are insulated from each other. Similarly, during the cutting process, the stripping mechanism 3 is used to strip the insulation from both ends of the wire harness.

[0026] Drive mechanism 4, such as Figure 1 As shown, connected to the frame 1, it drives the two first sliding seats 11 and the second sliding seat 12 to move closer or further apart. It should be noted that the drive mechanism 4 can take many forms, including servo motors, stepper motors, cylinders, and hydraulic cylinders. The insulation at one end of the wire harness is cut by setting the travel distance of the drive mechanism 4. It should be noted that the travel distance of the drive mechanism 4 can be a fixed distance or it can be adjusted continuously during the cutting process.

[0027] Transmission mechanism 5, such as Figure 1 As shown, a drive mechanism 5 is connected between the first sliding seat 11 and the second sliding seat 12 and the drive mechanism 4, used to transmit power from the drive mechanism 4 to the first sliding seat 11 and the second sliding seat 12. The drive mechanism 4 drives the transmission mechanism 5 to move, which in turn drives the transmission mechanism 5 to open and close the first peeling blade 31 and the second peeling blade 32, as well as the first cutting blade 21 and the second cutting blade 22 on the first sliding seat 11 and the second sliding seat 12, to perform peeling or cutting. It should be noted that the transmission mechanism 5 can take many forms, such as a ball screw, a synchronous belt, or a rack and pinion gear.

[0028] The testing mechanism includes a power supply 6 and a capacitance detection module. One end of the power supply 6 is electrically connected to the first stripper 31, and the other end is electrically connected to the second stripper 32. The capacitance detection module is electrically connected to both the first and second strippers 31 and is used to monitor the capacitance value between them. By connecting the power supply 6 between the first and second strippers 31 and 32, the difference between the dielectric constant of the metal core wire in the wire harness and the stripper is used to monitor the change in internal capacitance value in real time. This allows the contact condition between the stripper and the wire harness to be determined, and the distance between the first and second strippers 31 and 32 during stripping can be adjusted accordingly.

[0029] This invention achieves real-time sensing of the cutting state by insulating the first stripping blade 31 and the second stripping blade 32 in the stripping mechanism 3 with the first sliding seat 11 and the second sliding seat 12, respectively, and by setting up a detection mechanism composed of a power supply 6 and a capacitance detection module. When closed, the first stripping blade 31 and the second stripping blade 32 form an independent detection circuit with the wire harness. The capacitance detection module can monitor the capacitance value between the two stripping blades in real time. By utilizing the difference in dielectric constant between the wire harness insulation and the metal core wire, and by utilizing the change in the equivalent medium between the two stripping blades, the capacitance value changes accordingly. The capacitance change data obtained by the capacitance detection module reflects the relative positional relationship between the stripping blade and the metal core wire, providing reliable data support for precise control of the cutting depth. It automatically adapts to the actual size differences of wire harnesses of different batches and specifications, effectively avoiding insulation residue problems caused by shallow cutting blade feed and core wire damage problems caused by excessive cutting blade feed, significantly improving the consistency and yield of wire harness processing, thereby ensuring the long-term reliability of the finished wire harness.

[0030] In existing technology, the cutting mechanism 2 and the stripping mechanism 3 are usually arranged in series. The wire harness needs to be cut to a fixed length by the cutting mechanism 2 first, and then the wire feeding mechanism transfers the end of the wire harness to the stripping mechanism 3 for stripping. The cutting and stripping processes cannot be carried out simultaneously, which not only prolongs the processing cycle of a single wire harness and reduces production efficiency, but also makes it easy for the wire harness to shift position during the transfer between processes, affecting the accuracy of the stripping position, and thus leading to quality problems such as inconsistent stripping lengths at both ends of the same wire harness. Figure 2 , Figure 3 , Figure 6 As shown, the stripping mechanism 3 has two sets, and the cutting mechanism 2 has one set. The two sets of stripping mechanisms 3 are respectively arranged on both sides of the cutting mechanism 2. The wire harness passes through the stripping mechanism 3 and the cutting mechanism 2 simultaneously in the axial direction. By setting the two sets of stripping mechanisms 3 on both sides of the cutting mechanism 2, the two ends of the wire harness can be stripped simultaneously when the wire harness passes through the entire device in the axial direction. The cutting mechanism 2 completes the fixed-length cutting at the middle position of the wire harness, which shortens the processing time and improves production efficiency. It is especially suitable for wire harness processing scenarios that require stripping at both ends in mass production. The wire harness passes through the stripping mechanism 3 and the cutting mechanism 2 simultaneously in the axial direction, so that the wire harness does not need to be transferred and repositioned between processes during processing. This invention can complete all processes of cutting and stripping at both ends in one clamping, eliminating the positional error caused by transfer between processes, effectively ensuring the relative accuracy of the cutting position and the stripping position, and ensuring the consistency of the stripping length at both ends of the same wire harness. The two stripping mechanisms 3 are configured independently, each equipped with an insulation connection and a capacitance detection module, which can monitor the capacitance changes at both ends of the wire harness during the stripping process and independently record the optimal cutting parameters at both ends.

[0031] When the cutting blade and the stripping blade are positioned at the same height, they will simultaneously contact the wire harness during synchronous feeding, causing the cutting and stripping actions to overlap. This overlap not only increases the instantaneous load on the drive mechanism 4 but also easily leads to the wire harness being pulled by the stripping blade before it is completely cut, resulting in uneven tearing of the insulation or deformation of the core wire under stress. Figures 4 to 6 As shown, the cutting surface of the first cutting blade 21 is higher than that of the first stripping blade 31, and the cutting surface of the second cutting blade 22 is higher than that of the second stripping blade 32. By setting the cutting blade cutting surface higher than the stripping blade cutting surface, during the process of the drive mechanism 4 driving the first sliding seat 11 and the second sliding seat 12 to move towards each other, the cutting blade with the higher cutting surface contacts the wire harness before the stripping blade. After the cutting blade continues to feed and completely cuts the wire harness, the stripping blade with the lower cutting surface then contacts the wire harness and cuts into the insulation to strip it. The sequence achieved by the physical height difference eliminates the need for additional timing control circuits or sensor triggers, realizing the process flow of cutting first and then stripping, simplifying the control system and improving the reliability of the operation. This invention establishes a clear sequential order for the two processes in terms of time by setting the height difference, avoiding the problem of excessively high load peaks caused by simultaneous cutting. When the cutting blade cuts the wire harness first, the load on the drive mechanism 4 is more concentrated; after the cutting is completed, the stripping blade then cuts in, resulting in a smoother load curve, which helps to reduce the instantaneous impact on the drive mechanism 4 and extend the service life of the equipment.

[0032] The primary function of a cutting blade is to completely sever the wire harness, requiring the blade to have good cutting ability and strength; the primary function of a stripping blade is to cut into the insulation without damaging the internal metal core, requiring the blade to precisely control the cutting depth and to prevent slippage. For example... Figure 4 , Figure 6 As shown, the cutting angles of the first stripper blade 31 and the second stripper blade 32 are both 90 degrees, while the cutting angles of the first cutter blade 21 and the second cutter blade 22 are both greater than 90 degrees. The 90-degree blade angle ensures that the blades can smoothly cut into the wire harness insulation without being too sharp and damaging the core wires. Simultaneously, the 90-degree angle creates a smooth cut after insertion, facilitating subsequent insulation stripping and preventing tearing or residue caused by uneven cuts. The 90-degree blade angle also allows for simultaneous compression of the wire harness's outer insulation from four directions when the two strippers are combined, ensuring that the wire harness is compressed circumferentially.

[0033] In existing wire harness cutting and stripping equipment, the cutter is usually directly mounted on the sliding base, with direct metal-to-metal contact between the two. The cutter and the frame 1 are in the same electrical circuit. However, when an electrical detection signal needs to be applied to the cutter, because the cutter is connected to the entire equipment body, the detection signal will leak or interfere through the frame 1, making it difficult to form an independent detection circuit between the cutters. Figure 3 , Figure 5 , Figure 7 As shown, the first stripper 31 and the first sliding seat 11, and the second stripper 32 and the second sliding seat 12 have insulating pads 33 on their contact sides, and insulating pressure blocks 34 on their other sides. Bolts 35 pass through the interior of the first sliding seat 11 and the second sliding seat 12, connecting the first stripper 31, the second stripper 32, and the power supply 6. By providing insulating pads 33 between the contact surfaces of the stripper and the sliding seat, and insulating pressure blocks 34 on the other side of the stripper, a complete electrical isolation layer is formed between the stripper and the sliding seat. The insulating pads 33 prevent direct contact between the stripper and the bottom of the sliding seat, while the insulating pressure blocks 34 prevent conductivity between the clamping element and the surface of the stripper. The combined effect of these two ensures reliable insulation between the stripper and the entire frame 1 and the sliding seat, providing an independent electrical environment for subsequent capacitance testing and preventing leakage of the detection signal through the frame 1 or interference from external sources. The stripper blade and power supply 6 are directly connected via bolts 35 passing through the interior of the sliding seat, achieving an integration of electrical connection and mechanical fixation. Bolts 35 serve both as fasteners to reliably secure the stripper blade to the sliding seat and as conductive pathways to introduce detection signals to the stripper blade. This eliminates the need for separate wire connectors or conductive terminals, simplifying the wiring structure, reducing connection points, and improving the reliability of the electrical connection. It also avoids signal interruption caused by loose cables. The invention employs a double-sided clamping structure with insulating pads 33 and insulating pressure blocks 34, ensuring more uniform and stable force distribution on the stripper blade on the sliding seat. The insulating pads 33 provide a flat support surface for the stripper blade, while the insulating pressure blocks 34 apply uniform clamping force from the other side. Together, these effectively prevent displacement or deflection of the stripper blade due to vibration or force during use, ensuring long-term stability of the stripper blade position and improving the consistency of cutting accuracy.

[0034] In existing wire harness cutting and stripping equipment, the insulating pads used for the cutter typically employ a simple planar structure. These pads only provide isolation and lack positioning functionality for the cutter or comprehensive electrical insulation. The simple planar pads can only isolate the cutter from the bottom surface of the sliding seat, but the side of the cutter may still contact the sliding seat or other metal components, resulting in incomplete electrical isolation and leakage or short circuits in the detection signal. Due to the lack of positioning functionality, the cutter is prone to displacement or deflection in the forward and backward directions when subjected to cutting force, causing blade position deviation and affecting cutting accuracy. Figure 5 , Figure 7As shown, the insulating pad 33 includes a stripper contact surface 33a and edge contact surfaces 33b disposed on both sides of the stripper contact surface 33a. The width of the edge contact surfaces 33b is the same as the thickness of the first stripper 31 and the second stripper 32. By providing edge contact surfaces 33b on both sides of the stripper contact surface 33a and making the width of the edge contact surfaces 33b the same as the thickness of the stripper, a three-sided surrounding insulation structure for the stripper is formed. The surface of the stripper is in contact with the stripper contact surface 33a to achieve surface insulation, and the two sides are in contact with the edge contact surfaces 33b on both sides to achieve lateral insulation. This completely blocks all possible contact paths between the stripper and the sliding seat, ensuring a reliable electrical isolation between the stripper and the entire frame 1 and the sliding seat. This provides a clean and independent electrical environment for capacitance detection, fundamentally avoiding signal leakage or short circuit problems caused by lateral contact. The edge contact surface 33b not only serves as insulation, but also acts as a positioning structure to effectively limit the horizontal displacement and deflection of the peeling blade. When the peeling blade is subjected to lateral force during the cutting process, the edge contact surface 33b directly bears this force, preventing the peeling blade from sliding laterally, rather than relying solely on friction to maintain positional stability.

[0035] In existing wire harness cutting and stripping equipment, the 6-wire power supply is typically externally wired, connected to the cutter surface via independent terminals or solder joints. This exposed 6-wire power supply is prone to loosening or detachment due to vibration during equipment operation, leading to unreliable electrical connections. Independent terminals and cable fasteners increase the number of components and assembly complexity, not only occupying space but also increasing the probability of malfunctions. Figure 5 , Figure 7 As shown, the insulating pressure block 34 has a connecting hole 34a inside, through which the power supply 6 passes. The power supply 6 wire passes through the interior of the insulating pressure block 34 and connects directly to the stripper. The entire wire path is enclosed inside the insulating pressure block 34, completely isolated from the external environment and surrounding metal parts, effectively avoiding signal interference, short circuits, or leakage caused by exposed wires, ensuring the purity of the detection signal and the stability of transmission. As a clamping component for fixing the stripper, the insulating pressure block 34 itself has high structural strength and stability. After the power supply 6 wire passes through it, it is firmly positioned and protected, preventing loosening, friction, or detachment due to vibration during equipment operation. Electrical connection: the power supply 6 passes through the connecting hole 34a, contacts the bolt 35, and is then connected to the stripper by the bolt 35, simultaneously serving an insulating function.

[0036] Bolt 35 is itself a metallic conductor. When it passes through the sliding seat to connect the first stripper 31 and the second stripper 32, even if insulating pads 33 and insulating pressure blocks 34 are provided between the first stripper 31 and the second stripper 32 and the sliding seat, bolt 35 may still directly contact the hole wall of the sliding seat, forming a conductive path from the first stripper 31 and the second stripper 32 to bolt 35, and then to the sliding seat, resulting in electrical isolation failure. Figure 3 , Figure 5 As shown, the first sliding seat 11 and the second sliding seat 12, on the side away from the insulating pressure block 34, also have an insulating threaded sleeve 36. The insulating threaded sleeve 36 is fitted between the bolt 35 and the first sliding seat 11 and the second sliding seat 12. The insulating threaded sleeve 36 is fitted on the shank of the bolt 35, completely isolating the bolt 35 from the wall of the sliding seat hole. Even if the bolt 35 passes through the entire sliding seat, it will not form any conductive path with the sliding seat. This solves the problem of bolt 35 conduction, which is easily overlooked in traditional structures, and ensures that the entire electrical path from the power supply 6 to the stripper is limited to the stripper itself, completely isolated from the frame 1 and the sliding seat, providing a truly pure and independent electrical environment for capacitance detection. The insulating pad 33 and the insulating pressure block 34 solve the surface contact insulation problem between the stripper and the sliding seat, while the insulating threaded sleeve 36 solves the line contact insulation problem between the bolt 35 and the sliding seat. The two work together and complement each other to form a complete multi-layer insulation system, fundamentally eliminating any possible signal leakage or short circuit path, and greatly improving the reliability of electrical isolation and the accuracy of detection data.

[0037] In some embodiments of the present invention, such as Figure 1 As shown, the transmission mechanism 5 includes a straight shaft 51 fixedly connected to the drive mechanism 4, chain links 52 connected to both ends of the straight shaft 51, and guide rails 53 connected to the other ends of the chain links 52 and slidably mounted on the frame 1. The other ends of the guide rails 53 are connected to a first sliding seat 11 and a second sliding seat 12, respectively. Through the cooperation of the straight shaft 51 and the chain links 52 on both sides, the function of a single drive mechanism 4 simultaneously driving two sliding seats to move towards each other is realized. The straight shaft 51 rotates under the drive of the drive mechanism 4, and the chain links 52 at both ends convert the rotational motion into linear motion, pushing or pulling the guide rails 53 on both sides, thereby causing the first sliding seat 11 and the second sliding seat 12 to move closer or further apart. The symmetrical transmission layout ensures the synchronicity and symmetry of the movement of the two sliding seats, achieving precise alignment without the need for complex synchronization control algorithms.

[0038] According to a second aspect of the present invention, a method for controlling wire harness cutting and stripping is also provided, such as... Figure 8 As shown, the steps include: S10: The wire harness is passed axially through the stripping mechanism 3 and the cutting mechanism 2. The drive mechanism 4 drives the first sliding seat 11 and the second sliding seat 12 to move closer together, causing the first stripping blade 31 and the second stripping blade 32 to move towards the outer surface of the wire harness. By passing the wire harness to be processed axially through the device, it is simultaneously positioned between the two sets of stripping mechanisms 3 and the cutting mechanism 2. When the wire harness reaches the set length, the drive mechanism 4 drives the first sliding seat 11 and the second sliding seat 12 to move towards each other through the transmission mechanism 5. The first stripping blade 31 and the second stripping blade 32 mounted on the sliding seats gradually move closer to the outer surface of the wire harness, preparing for the subsequent cutting action. Utilizing the axially connected layout of the stripping mechanism 3 and the cutting mechanism 2, all subsequent processing steps can be completed in one clamping of the wire harness, without the need for intermediate transfer and secondary positioning, laying the foundation for efficient and precise stripping processing.

[0039] S20: Set the initial displacement distance between the first sliding seat 11 and the second sliding seat 12, cut the wire harness using the first cutter 21 and the second cutter 22, and perform a trial cut on the wire harness insulation using the first stripper 31 and the second stripper 32; based on the specifications of the wire harness to be processed, including the outer diameter, insulation layer thickness, or empirical parameters, pre-set the initial displacement distance between the first sliding seat 11 and the second sliding seat 12; under this initial displacement condition, firstly, use the first cutter 21 and the second cutter 22 to cut the wire harness to a fixed length, and then control the first stripper 31 and the second stripper 32 to continue moving inward, cut into the insulation layer at the end of the wire harness and perform a stripping operation to complete a trial cut process, which is used to evaluate the adaptability of the current displacement parameters.

[0040] S30: The capacitance value between the first stripper 31 and the second stripper 32 is monitored using a capacitance detection module. The cutting state of the stripper is determined based on the change in capacitance value, and the target displacement distance suitable for this specification of wire harness is determined based on the results of multiple trial cuts. During the trial cut, the capacitance signal is collected in real time by the capacitance detection module set between the first stripper 31 and the second stripper 32, and the trend and magnitude of the change in capacitance value with the position of the first stripper 31 and the second stripper 32 are analyzed. When the first stripper 31 and the second stripper 32 gradually cut into the insulation layer and approach the core wire, the capacitance value will change abruptly. By comparing and judging the capacitance change characteristics during multiple trial cuts, the contact state between the first stripper 31 and the second stripper 32 and the insulation layer and the core wire is identified, thereby determining the optimal cutting depth that can completely cut the insulation layer without damaging the core wire, and thus determining the target displacement distance of the wire harness.

[0041] S40: After determining the target displacement distance, the wire harness is batch-cut and stripped according to the target displacement distance, and the change of the capacitance value is continuously monitored during the processing; after the target displacement distance is set, the drive mechanism 4 is controlled to perform batch-cutting and stripping processing on subsequent wire harnesses according to the target displacement distance; during continuous processing, the capacitance detection module continuously monitors the capacitance value between the first stripping blade 31 and the second stripping blade 32 in real time to reflect the actual contact state between the first stripping blade 31 and the second stripping blade 32 and the wire harness, and dynamically monitors the processing process in real time.

[0042] S50: When an abnormal change in capacitance value is detected and reaches a preset alarm threshold, it is determined that the first stripper 31 and the second stripper 32 pose a risk of damaging the wire harness core wire. The control device stops operating and outputs an alarm signal. During the processing monitoring process, when a sudden change in capacitance value is detected, exceeding the normal fluctuation range, or reaching the preset alarm threshold, it is determined that the current cutting depth of the first stripper 31 and the second stripper 32 may be too large, posing a risk of damaging the internal metal core wire of the wire harness. The control system immediately issues a control command to stop the operation of the drive mechanism 4 and outputs an alarm signal to prompt the operator to check and adjust, thereby preventing the continued production of defective products.

[0043] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A wire harness cutting and stripping device, characterized in that, include: A frame, and a first sliding seat and a second sliding seat disposed on the frame and which may be relatively close to or far away from each other; The cutting mechanism includes a first cutter disposed on the first sliding seat and a second cutter disposed on the second sliding seat, for cutting the wire harness; The stripping mechanism includes a first stripping blade disposed on the first sliding seat and a second stripping blade disposed on the second sliding seat, for stripping the insulation from the end of the wire harness. The contact surfaces of the first stripping blade and the first sliding seat, and the contact surfaces of the second stripping blade and the second sliding seat, are insulated from each other. A drive mechanism, connected to the frame, is used to drive the two first sliding seats and the second sliding seat to move closer or further apart from each other; A transmission mechanism is connected between the first and second sliding seats and the drive mechanism, for transmitting the power of the drive mechanism to the first and second sliding seats; The testing mechanism includes a power supply and a capacitance testing module. One end of the power supply is electrically connected to the first stripper and the other end is electrically connected to the second stripper. The capacitance testing module is electrically connected to the first stripper and the second stripper and is used to monitor the capacitance value between the first stripper and the second stripper.

2. The wire harness cutting and stripping device according to claim 1, characterized in that, The peeling mechanism has two sets, and the cutting mechanism has one set. The two sets of peeling mechanisms are respectively arranged on both sides of the cutting mechanism, and the wire harness passes through the peeling mechanism and the cutting mechanism simultaneously in the axial direction.

3. The wire harness cutting and stripping device according to claim 2, characterized in that, The first cutting surface of the cutter is higher than the first peeling surface, and the second cutting surface of the cutter is higher than the second peeling surface.

4. The wire harness cutting and stripping device according to claim 3, characterized in that, The cutting angles of the first peeling blade and the second peeling blade are both 90 degrees, and the cutting angles of the first cutting blade and the second cutting blade are both greater than 90 degrees.

5. The wire harness cutting and stripping device according to claim 1, characterized in that, The first peeler and the first sliding seat, and the second peeler and the second sliding seat have an insulating pad on the contact side, and an insulating pressure block on the other side of the first peeler and the second peeler. Bolts pass through the inside of the first sliding seat and the second sliding seat, and the bolts connect the first peeler, the second peeler and the power supply.

6. The wire harness cutting and stripping device according to claim 5, characterized in that, The insulating pad includes a stripper contact surface and edge contact surfaces disposed on both sides of the stripper contact surface, the width of which is the same as the thickness of the first stripper and the second stripper.

7. The wire harness cutting and stripping device according to claim 5, characterized in that, The insulating block has a connection hole inside, and the power supply passes through the connection hole.

8. The wire harness cutting and stripping device according to claim 5, characterized in that, The first sliding seat and the second sliding seat also have an insulating screw sleeve on the side away from the insulating pressure block, and the insulating screw sleeve is sleeved between the bolt and the first sliding seat and the second sliding seat.

9. The wire harness cutting and stripping device according to claim 1, characterized in that, The transmission mechanism includes a straight shaft fixedly connected to the drive mechanism, chain links connected to both ends of the straight shaft, and a guide rail connected to the other end of the chain links and slidably mounted on the frame. The other end of the guide rail is connected to a first sliding seat and a second sliding seat.

10. A method for controlling wire harness cutting and stripping, characterized in that, Using the wire harness cutting and stripping device as described in any one of claims 1 to 9 includes the following steps: The wire harness is passed axially through the stripping mechanism and the cutting mechanism. The first sliding seat and the second sliding seat are driven to move closer to each other by the drive mechanism, so that the first stripping blade and the second stripping blade move toward the outer surface of the wire harness. Set the initial displacement distance between the first sliding seat and the second sliding seat, cut the wire harness with the first cutter and the second cutter, and perform a trial cut on the wire harness insulation with the first stripper and the second stripper. The capacitance value between the first stripper and the second stripper is monitored using a capacitance detection module. The cutting state of the stripper is determined based on the change in capacitance value, and the target displacement distance applicable to the wire harness of this specification is determined based on the results of multiple trial cuts. After determining the target displacement distance, the wire harness is batch-cut and stripped according to the target displacement distance, and the change of the capacitance value is continuously monitored during the processing. When an abnormal change in capacitance value is detected and reaches the preset alarm threshold, it is determined that the stripper poses a risk of damaging the wire harness core wire, and the control device stops operating and outputs an alarm signal.

Images