A wire shearing device for the production of circlips

Abstract

The present invention discloses a steel wire shearing device for the production of elastic retaining rings, specifically relating to the technical field of elastic retaining ring production. The device includes a base, a steel wire placing roller, a straightening roller group for straightening the steel wire, a shearing groove body for placing the steel wire, a storage bin for storing the sheared steel wire, and a tool for shearing the steel wire. A central processor, a mounting frame, and an opening and closing mechanism are respectively arranged at the top of the base. A shearing groove plate is arranged at the bottom of the shearing groove body. A pressing mechanism and a correction mechanism are respectively arranged at the top of the mounting frame. The pressing mechanism is used to press both ends of the steel wire entering the shearing position. The opening and closing mechanism is used to control the opening and closing of the shearing groove plate. The correction mechanism is used to straighten the sheared steel wire. The present invention solves the problem of bending deformation of the steel wire caused by stress release after shearing, realizes the intelligent detection and correction of the steel wire after shearing, and ensures the processing accuracy and assembly quality of the retaining ring.

Description

Technical Field

[0001] The present invention relates to the technical field of snap ring production, and more specifically, the present invention relates to a wire shearing device for snap ring production. Background Art

[0002] A snap ring is a fastener widely used in industries such as machinery, automobiles, aviation, and electronics. Its main function is to be stuck in the groove of shaft or hole parts through its own elasticity, preventing the components from falling off due to axial movement, thereby playing a role of fixing, supporting or restricting. Snap rings are usually made of high-strength spring steel or stainless steel to ensure good elasticity, wear resistance and fatigue resistance. One of the most basic links in its production process is the shearing process of the raw material - wire. During the production of snap rings, the raw materials are usually provided in the form of coiled wires, which need to be precisely cut into wire segments of a certain length for subsequent processes such as forming, heat treatment and surface treatment. However, due to the high requirements of snap rings for dimensional accuracy, strength and elasticity, traditional shearing methods are prone to cause deformation of the shearing surface, large burrs at the fracture, and even affect the elastic performance of the snap ring. Therefore, a professional wire shearing device has become a key equipment in this production process. This device can not only achieve high-precision fixed-length shearing of wires, ensure the consistency of subsequent forming dimensions, but also improve the shearing efficiency, reduce material waste, and reduce tool wear, ultimately improving the overall quality and production efficiency of snap rings.

[0003] The prior art has the following deficiencies: During the production of circlips, when the steel wire is sheared, due to the applied shearing force and the characteristics of the steel wire material, stress release or plastic deformation may occur, resulting in bending deformation of the sheared steel wire segment. Specifically, under the action of the shearing force, the high-stress area generated by the blade near the shearing point may cause local plastic deformation of the steel wire, and this deformation cannot be fully restored instantaneously during shearing, causing slight warping or bending of the end of the steel wire. At the same time, certain internal stresses may remain in the steel wire during the production process, especially after processes such as rolling and cold drawing. These stresses are suddenly released during shearing, resulting in uneven springback of the steel wire, and further causing the sheared steel wire segment to bend. In addition, during the shearing process, if the steel wire is not fully clamped or fixed, the impact force at the moment of shearing may cause the steel wire to have a small displacement, resulting in offset or bending of the shearing cut. The existing steel wire shearing device for the production of circlips cannot prevent the sheared steel wire from bending due to stress release or the influence of the shearing force, affecting the shape accuracy and assembly quality of the circlip. This bending not only affects the shape of the steel wire, but may also cause shape errors during subsequent stamping, bending or curling processes of the circlip, affecting the assembly accuracy of the circlip, resulting in irregular shapes, reducing the clamping force and sealing performance, and affecting its matching degree with the shaft groove or hole groove. In addition, if the steel wire fails to remain completely straight, additional straightening processes or manual corrections may be required, increasing production costs and processing time.

[0004] The above information disclosed in the background art section is only used to enhance the understanding of the background of the present disclosure. Therefore, it may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] In order to overcome the above defects of the prior art, the present invention provides a steel wire shearing device for the production of circlips to solve the problems proposed in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A steel wire shearing device for the production of circlips includes a base, a steel wire placement roller, a straightening roller group for straightening the steel wire, a shearing groove body for placing the steel wire, a storage bin for storing the sheared steel wire, and a tool for shearing the steel wire. A central processor, a mounting frame, and an opening and closing mechanism are respectively arranged on the top of the base. A shearing groove plate is arranged at the bottom of the shearing groove body, and a pressing mechanism and a correction mechanism are respectively arranged on the top of the mounting frame. The pressing mechanism is used to press both ends of the steel wire entering the shearing position, the opening and closing mechanism is used to control the opening and closing of the shearing groove plate, and the correction mechanism is used to straighten the sheared steel wire;

[0008] It further includes:

[0009] The shear force acquisition module is arranged on one side of the top of the tool, and is used to obtain in real time the shear force applied by the tool to the steel wire at different moments during the shearing of the steel wire, and generate a shear force change coefficient through the central processor;

[0010] The length acquisition module is arranged on one side of the tool, and is used to obtain in real time the actual length of the steel wire at different moments during the shearing of the steel wire, and generate a length mutation index through the central processor;

[0011] The central processor comprehensively analyzes the generated shear force change coefficient and length mutation index to generate a bending judgment coefficient. By comparing the bending judgment coefficient with a preset reference threshold of the bending judgment coefficient, it is judged whether the steel wire is bent and deformed after the tool shears the steel wire according to the comparison result, and the working states of the pressing mechanism, the opening and closing mechanism, and the straightening mechanism are controlled according to the comparison result.

[0012] Preferably, the pressing mechanism includes a pressing cylinder, a pressing telescopic rod and a pressing block. The bottom of the pressing cylinder is fixedly connected to the top of the mounting frame. The output shaft of the pressing cylinder is drivingly connected to one end of the pressing telescopic rod. The other end of the pressing telescopic rod is fixedly connected to the top of the pressing block. A groove for fitting the outer wall of the steel wire is provided at the bottom of the pressing block.

[0013] Preferably, the opening and closing mechanism includes an opening and closing cylinder mounting plate, an opening and closing cylinder, an opening and closing telescopic rod, a connecting block, a rotating shaft, a fixed shaft and a fixed block. The bottom of the opening and closing cylinder mounting plate is fixedly connected to the top of the base. The top of the opening and closing cylinder mounting plate is fixedly connected to the bottom of the opening and closing cylinder. The output shaft of the opening and closing cylinder is drivingly connected to one end of the opening and closing telescopic rod. The other end of the opening and closing telescopic rod is fixedly connected to one side of the connecting block. The other side of the connecting block is fixedly connected to the outer wall of the rotating shaft. The inner wall of the rotating shaft is movably connected to the outer wall of the fixed shaft through a bearing. Both ends of the fixed shaft are fixedly connected to the inner wall of the fixed block. One side of the fixed block is fixedly connected to one side of the shear groove plate.

[0014] Preferably, the correction mechanism includes a motor, a gear transmission box, a lead screw, a sliding block, a connecting rod, a support plate, a correction cylinder, a correction telescopic rod, a connecting frame and correction rollers. The bottom of the motor is fixedly connected to the top of the mounting frame. The output shaft of the motor is in transmission connection with the input shaft of the gear transmission box. The output shaft of the gear transmission box is in transmission connection with one end of the lead screw. The outer wall of the lead screw is in transmission connection with the inner wall of the sliding block. One side of the sliding block is fixedly connected to one side of the connecting rod. The other side of the connecting rod is fixedly connected to one side of the support plate. The top of the support plate is fixedly connected to the bottom of the correction cylinder. The output shaft of the correction cylinder is in transmission connection with one end of the correction telescopic rod. The other end of the correction telescopic rod is fixedly connected to the top of the connecting frame. The inner walls of the connecting frame are fixedly connected to both ends of the middle rotating shaft of the correction rollers. The outer wall of the correction rollers is provided with grooves for fitting the outer wall of the steel wire.

[0015] Preferably, the output end of the central processing unit is electrically connected to the input end of the pressing cylinder, the input end of the opening and closing cylinder, the input end of the motor and the input end of the correction cylinder respectively. The output end and the input end of the shear force acquisition module and the output end and the input end of the length acquisition module are electrically connected to the input end and the output end of the central processing unit respectively.

[0016] Preferably, the acquisition logic of the shear force change coefficient is as follows:

[0017] S1. The shear force applied by the tool to the steel wire at different moments during the shearing of the steel wire by the tool is obtained in real time through the shear force acquisition module and is calibrated as , indicating the shear force applied by the tool to the steel wire at the moment during the shearing of the steel wire by the tool, , where

[0018] S2. Calculate the average value of the shear forces applied by the tool to the steel wire at different moments during the shearing of the steel wire by the tool. According to the formula: ;

[0019] S3. Calculate the shear force change coefficient. The calculation expression is:

[0020]

[0021] In the formula, is the shear force change coefficient.

[0022] Preferably, the acquisition logic of the length mutation index is as follows:

[0023] S1. Obtain the actual length of the steel wire at different moments in real time through the length acquisition module during the process of the tool shearing the steel wire, and calibrate it as , indicating the actual length of the steel wire at the moment during the process of the tool shearing the steel wire, , where

[0024] is a positive integer; , and calculate the average value between the actual lengths of the steel wire at different moments during the process of the tool shearing the steel wire according to the formula: ;

[0025] S3. Calculate the length mutation index, and the calculation expression is:

[0026]

[0027] In the formula, is the length mutation index.

[0028] Preferably, the expression formula of the bending judgment coefficient is:

[0029] Conduct formula analysis through the central processing unit according to the formula:

[0030]

[0031] In the formula, is the bending judgment coefficient, and are respectively the preset proportionality coefficients of the shear force change coefficient and the length mutation index , and and are both greater than 0.

[0032] Preferably, set the preset reference threshold of the bending judgment coefficient as , compare the calculated bending judgment coefficient with the preset reference threshold of the bending judgment coefficient through the central processing unit, and judge whether the steel wire is bent and deformed after the tool shears the steel wire according to the comparison result, and control the working states of the pressing mechanism, the opening and closing mechanism, and the straightening mechanism according to the comparison result. The specific judgment is as follows:

[0033] When When the wire does not bend after being sheared by the tool, a normal signal is generated. After receiving the normal signal, the central processing unit generates a reset signal, a standby signal, and an opening signal, and transmits the reset signal to the pressing cylinder. After receiving the reset signal, the pressing cylinder controls the pressing mechanism to perform a reset operation, transmits the standby signal to the motor and the straightening cylinder respectively. After receiving the standby signal, the motor and the straightening cylinder control the straightening mechanism to perform a standby operation, and transmit the opening signal to the opening and closing cylinder. After receiving the opening signal, the opening and closing cylinder controls the opening and closing mechanism to perform an opening operation;

[0034] When When the wire bends after being sheared by the tool, an abnormal signal is generated. After receiving the abnormal signal, the central processing unit generates a holding signal and a straightening signal, transmits the holding signal to the pressing cylinder and the opening and closing cylinder respectively. After receiving the holding signal, the pressing cylinder and the opening and closing cylinder control the pressing mechanism and the opening and closing mechanism to perform a holding operation respectively, and transmit the straightening signal to the motor and the straightening cylinder respectively. After receiving the straightening signal, the motor and the straightening cylinder control the straightening mechanism to perform a straightening operation.

[0035] The technical effects and advantages of the present invention:

[0036] 1. Before shearing, the present invention clamps both ends of the wire through the pressing mechanism to prevent displacement caused by impact force during the shearing process, making the shearing point evenly stressed and reducing local plastic deformation. At the same time, the device is equipped with a straightening mechanism. When it is detected that the wire after shearing is bent, the straightening mechanism will roll and straighten the wire through the straightening rollers to make it return to a straight state, thereby ensuring that the wire after shearing has a high-precision straightness. This method can effectively prevent the forming error of the retaining ring caused by wire bending, avoid affecting subsequent processes (such as stamping, bending or curling) due to deformation problems, and thus improve the processing accuracy and assembly quality of the retaining ring.

[0037] 2. The present invention introduces a shearing force acquisition module and a length acquisition module to respectively monitor the shearing force fluctuation of the tool during the shearing process in real time, and the length change of the wire after shearing, and calculates the shearing force change coefficient and the length mutation index, and further calculates the bending judgment coefficient. Through these intelligent data analyses, the central processing unit can accurately judge whether the wire after shearing is bent, and automatically adjust the working states of the pressing mechanism, the opening and closing mechanism, and the straightening mechanism based on the judgment result. This intelligent detection and adjustment method avoids the errors of traditional equipment relying on manual detection, improves the stability of shearing quality, and reduces the defective rate.

[0038] 3. The present invention can not only achieve full-automatic closed-loop control of shearing-detection-correction, but also determine whether correction is needed according to the real-time detection results, thereby avoiding unnecessary straightening processes and improving production efficiency. Specifically, when the steel wire after shearing does not undergo bending deformation, the system will automatically control the opening and closing mechanism to open the shearing groove plate, allowing the steel wire to directly enter the storage bin; when the steel wire undergoes bending deformation, the system will keep the shearing groove plate closed and trigger the correction mechanism to perform correction, ensuring that the steel wire enters the storage bin only after reaching the standard straightness. This intelligent regulation method reduces additional straightening processes and avoids the cumbersome process of manual intervention for correction in traditional equipment, thereby reducing production costs, improving overall production efficiency, and enhancing the qualification rate and market competitiveness of retaining ring products. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] For the convenience of those skilled in the art to understand, the present invention will be further described below in conjunction with the accompanying drawings;

[0040] Figure 1 FIG. is a three-dimensional structural schematic diagram of a steel wire shearing device for producing elastic retaining rings proposed by the present invention;

[0041] Figure 2 FIG. is a front structural schematic diagram of a steel wire shearing device for producing elastic retaining rings proposed by the present invention;

[0042] Figure 3 FIG. is a top structural schematic diagram of a steel wire shearing device for producing elastic retaining rings proposed by the present invention;

[0043] Figure 4 FIG. is an installation structural schematic diagram of a pressing mechanism, an opening and closing mechanism, and a correction mechanism of a steel wire shearing device for producing elastic retaining rings proposed by the present invention;

[0044] Figure 5 FIG. is a structural schematic diagram of a pressing mechanism of a steel wire shearing device for producing elastic retaining rings proposed by the present invention;

[0045] Figure 6 FIG. is an installation structural schematic diagram of a cutter, a shearing force acquisition module, and a length acquisition module of a steel wire shearing device for producing elastic retaining rings proposed by the present invention;

[0046] Figure 7 FIG. is an installation structural schematic diagram of a shearing groove body, a storage bin, a shearing groove plate, and an opening and closing mechanism of a steel wire shearing device for producing elastic retaining rings proposed by the present invention;

[0047] Figure 8 FIG. is an installation structural schematic diagram of a shearing groove plate and an opening and closing mechanism of a steel wire shearing device for producing elastic retaining rings proposed by the present invention;

[0048] Figure 9Schematic structural diagram of the opening and closing mechanism of a wire shearing device for producing elastic retaining rings proposed by the present invention;

[0049] Figure 10 Schematic structural diagram of the installation of the connecting block, rotating shaft, fixed shaft and fixed block of a wire shearing device for producing elastic retaining rings proposed by the present invention;

[0050] Figure 11 Schematic structural diagram of the straightening mechanism of a wire shearing device for producing elastic retaining rings proposed by the present invention;

[0051] Figure 12 Schematic structural diagram of the installation of the straightening cylinder, straightening telescopic rod, connecting frame and straightening roller of a wire shearing device for producing elastic retaining rings proposed by the present invention;

[0052] Figure 13 Module schematic diagram of a wire shearing device for producing elastic retaining rings proposed by the present invention.

[0053] In the figure: 1, base; 2, wire placement roller; 3, straightening roller group; 4, shearing groove body; 5, storage bin; 6, cutting tool; 7, central processing unit; 8, mounting rack; 9, shearing groove plate; 10, pressing mechanism; 1001, pressing cylinder; 1002, pressing telescopic rod; 1003, pressing block; 11, opening and closing mechanism; 1101, opening and closing cylinder mounting plate; 1102, opening and closing cylinder; 1103, opening and closing telescopic rod; 1104, connecting block; 1105, rotating shaft; 1106, fixed shaft; 1107, fixed block; 12, straightening mechanism; 1201, motor; 1202, gear transmission box; 1203, lead screw; 1204, slider; 1205, connecting rod; 1206, support plate; 1207, straightening cylinder; 1208, straightening telescopic rod; 1209, connecting frame; 1210, straightening roller; 13, shearing force acquisition module; 14, length acquisition module. Detailed implementation manners

[0054] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0055] As Figures 1-13As shown in the figure, a wire shearing device for the production of elastic retaining rings includes a base 1, a wire placement roller 2, a straightening roller group 3 for straightening the wire, a shearing groove body 4 for placing the wire, a storage bin 5 for storing the sheared wire, and a cutter 6 for shearing the wire. A central processor 7, a mounting frame 8, and an opening and closing mechanism 11 are respectively arranged on the top of the base 1. A shearing groove plate 9 is arranged at the bottom of the shearing groove body 4. A pressing mechanism 10 and a straightening mechanism 12 are respectively arranged on the top of the mounting frame 8. The pressing mechanism 10 is used to press both ends of the wire entering the shearing position, the opening and closing mechanism 11 is used to control the opening and closing of the shearing groove plate 9, and the straightening mechanism 12 is used to straighten the sheared wire;

[0056] It further includes:

[0057] A shearing force acquisition module 13, arranged on one side of the top of the cutter 6, is used to obtain in real time the shearing force applied by the cutter 6 to the wire at different moments during the process of shearing the wire, and generate a shearing force change coefficient through the central processor 7;

[0058] It should be noted that the shearing force acquisition module 13 can be a piezoelectric shearing force sensor, a high-precision pressure sensor, or other devices that can obtain in real time the shearing force applied by the cutter 6 to the wire at different moments during the process of shearing the wire. The shearing force acquisition module 13 is not specifically limited here and can be selected according to actual needs.

[0059] A length acquisition module 14, arranged on one side of the cutter 6, is used to obtain in real time the actual length of the wire at different moments during the process of shearing the wire, and generate a length mutation index through the central processor 7;

[0060] It should be noted that the length acquisition module 14 can be a laser displacement sensor, an optical ranging sensor, or other devices that can obtain in real time the actual length of the wire at different moments during the process of shearing the wire. The length acquisition module 14 is not specifically limited here and can be selected according to actual needs.

[0061] The central processor 7 comprehensively analyzes the generated shearing force change coefficient and length mutation index to generate a bending judgment coefficient. By comparing the bending judgment coefficient with a pre-set reference threshold of the bending judgment coefficient, it is judged whether the wire is bent and deformed after being sheared by the cutter 6 according to the comparison result, and the working states of the pressing mechanism 10, the opening and closing mechanism 11, and the straightening mechanism 12 are controlled according to the comparison result.

[0062] The straightening roller set 3 is used to eliminate the bending deformation generated during the coiled storage of the steel wire, so that it maintains a straight state before entering the shearing groove body 4, thereby improving the shearing accuracy and the forming quality of the retaining ring. The straightening roller set 3 can mainly straighten the steel wire by means of multi-roller bending correction, tension control straightening, vibration-assisted straightening, rotary straightening, etc. Among them, the multi-roller bending correction method is the most common method, usually composed of a set of straightening rollers arranged staggeredly. When the steel wire passes through the roller set, it successively undergoes the processes of reverse bending and stress homogenization, gradually eliminating the original bending state; the arrangement angle and pressing force of the rollers can be adjusted according to parameters such as the diameter and hardness of the steel wire to achieve the optimal straightening effect. In addition, the tension control straightening method applies a constant tension through the driving of the active roller by the servo motor, so that the steel wire is gradually straightened during the movement process and the internal residual stress is released, improving the straightness; this method is particularly suitable for the straightening of high-strength steel wires or large-diameter steel wires. The vibration-assisted straightening method acts on the rollers through an ultrasonic or high-frequency vibration device, so that the steel wire reduces the internal stress during the vibration process and obtains a more stable straight state, improving the straightening effect. For steel wires of certain special specifications, the rotary straightening method can also be adopted, that is, when the steel wire passes through the roller set, a rotary roller is added, so that the steel wire is uniformly corrected in multiple axial directions, improving the overall straightness. Finally, while the steel wire passes through the roller set, the straightening roller set 3 detects the straightness of the steel wire through a sensor, and dynamically adjusts the pressure, spacing or rotation angle of the rollers according to the detection result to ensure that the steel wire reaches the best straightening state before being conveyed to the shearing groove. The specific method of straightening the steel wire by the straightening roller set 3 is not specifically limited here and can be selected according to actual needs.

[0063] In this embodiment, the pressing mechanism 10 includes a pressing cylinder 1001, a pressing telescopic rod 1002 and a pressing block 1003. The bottom of the pressing cylinder 1001 is fixedly connected to the top of the mounting frame 8. The output shaft of the pressing cylinder 1001 is drivingly connected to one end of the pressing telescopic rod 1002. The other end of the pressing telescopic rod 1002 is fixedly connected to the top of the pressing block 1003. A groove for fitting the outer wall of the steel wire is provided at the bottom of the pressing block 1003.

[0064] It should be noted that two groups of pressing mechanisms 10 are provided in the present invention, and are respectively used for both ends of the steel wire that enters the shearing groove body 4 and reaches the predetermined shearing position. Several more groups can also be set. The specific number set is not specifically limited here, as long as the requirements can be met and the shearing work of the steel wire is not affected.

[0065] The pressing mechanism 10 is used to press both ends of the steel wire entering the shearing position, preventing the steel wire from displacing due to uneven force or instantaneous impact during the shearing process, thereby ensuring the shearing accuracy. The specific implementation method is as follows: When the steel wire is conveyed by the feeding mechanism to the shearing groove body 4 and reaches the predetermined shearing position, the central processing unit 7 sends a signal to control the start of the pressing cylinder 1001. Its output shaft drives the pressing telescopic rod 1002 to move downward, driving the pressing block 1003 to gradually descend. As the pressing block 1003 presses down, the groove provided at its bottom will precisely fit the outer wall of the steel wire. Since two groups of pressing mechanisms 10 are provided, which are respectively used for both ends of the steel wire entering the shearing groove body 4 and reaching the predetermined shearing position, uniform clamping forces are applied to both ends of the steel wire, ensuring that no lateral or longitudinal displacement occurs during the shearing process.

[0066] In this embodiment, the opening and closing mechanism 11 includes an opening and closing cylinder mounting plate 1101, an opening and closing cylinder 1102, an opening and closing telescopic rod 1103, a connecting block 1104, a rotating shaft 1105, a fixed shaft 1106, and a fixed block 1107. The bottom of the opening and closing cylinder mounting plate 1101 is fixedly connected to the top of the base 1, the top of the opening and closing cylinder mounting plate 1101 is fixedly connected to the bottom of the opening and closing cylinder 1102, the output shaft of the opening and closing cylinder 1102 is drivingly connected to one end of the opening and closing telescopic rod 1103, the other end of the opening and closing telescopic rod 1103 is fixedly connected to one side of the connecting block 1104, the other side of the connecting block 1104 is fixedly connected to the outer wall of the rotating shaft 1105, the inner wall of the rotating shaft 1105 is movably connected to the outer wall of the fixed shaft 1106 through a bearing, both ends of the fixed shaft 1106 are fixedly connected to the inner wall of the fixed block 1107, and one side of the fixed block 1107 is fixedly connected to one side of the shearing groove plate 9.

[0067] The opening and closing mechanism 11 is used to control the opening and closing of the shearing groove plate 9 to ensure that the steel wire can smoothly fall into the storage bin 5 after shearing. The specific implementation method is as follows: The output shaft of the opening and closing cylinder 1102 pushes the opening and closing telescopic rod 1103 to retract. One end of the opening and closing telescopic rod 1103 is fixedly connected to the connecting block 1104. Therefore, the linear movement of the opening and closing telescopic rod 1103 will drive the connecting block 1104 to displace. The other side of the connecting block 1104 is fixedly connected to the outer wall of the rotating shaft 1105. Therefore, when the connecting block moves, the rotating shaft 1105 rotates. The inner wall of the rotating shaft 1105 is movably connected to the outer wall of the fixed shaft 1106 through a bearing. Thus, when the rotating shaft 1105 rotates, the fixed shaft 1106 provides support and makes the whole rotation process smooth. Both ends of the fixed shaft 1106 are fixedly connected to the inner wall of the fixed block 1107. One side of the fixed block 1107 is fixedly connected to the shearing groove plate 9. Therefore, when the rotating shaft 1105 rotates, the fixed block 1107 rotates accordingly, driving the shearing groove plate 9 to rotate and realizing the opening of the shearing groove. After the steel wire falls into the storage bin 5, the opening and closing cylinder 1102 extends in the reverse direction, driving the opening and closing telescopic rod 1103 to extend. Then, through the connecting block 1104, the rotating shaft 1105 is driven to rotate in the reverse direction, making the shearing groove plate 9 return to the initial closed position and waiting for the next shearing operation. During the whole process, the opening and closing cylinder 1102 provides the power source, the opening and closing telescopic rod 1103 realizes linear movement, the rotating shaft 1105 converts the linear movement into rotational movement, and the fixed block 1107 finally drives the shearing groove plate 9 to open and close precisely.

[0068] In this embodiment, the correction mechanism 12 includes a motor 1201, a gear transmission box 1202, a lead screw 1203, a sliding block 1204, a connecting rod 1205, a support plate 1206, a correction cylinder 1207, a correction telescopic rod 1208, a connecting frame 1209, and a correction roller 1210. The bottom of the motor 1201 is fixedly connected to the top of the mounting frame 8. The output shaft of the motor 1201 is in transmission connection with the input shaft of the gear transmission box 1202. The output shaft of the gear transmission box 1202 is in transmission connection with one end of the lead screw 1203. The outer wall of the lead screw 1203 is in transmission connection with the inner wall of the sliding block 1204. One side of the sliding block 1204 is fixedly connected to one side of the connecting rod 1205. The other side of the connecting rod 1205 is fixedly connected to one side of the support plate 1206. The top of the support plate 1206 is fixedly connected to the bottom of the correction cylinder 1207. The output shaft of the correction cylinder 1207 is in transmission connection with one end of the correction telescopic rod 1208. The other end of the correction telescopic rod 1208 is fixedly connected to the top of the connecting frame 1209. The inner wall of the connecting frame 1209 is fixedly connected to both ends of the middle rotating shaft of the correction roller 1210. The outer wall of the correction roller 1210 is provided with a groove for fitting the outer wall of the steel wire.

[0069] It should be noted that the gear transmission box 1202 can mainly transfer the rotational kinetic energy output by the motor 1201 to the lead screw 1203 through the mutual cooperation of the internal gears, thereby controlling the rotation of the lead screw 1203. The specific cooperation mode of the internal gears of the gear transmission box 1202 is not specifically limited here, as long as it can meet the requirements.

[0070] The straightening mechanism 12 is used to straighten the steel wire after shearing to ensure that the end of the steel wire returns to a straight state. The specific implementation method is as follows: After the straightening cylinder 1207 is started, its output shaft pushes the straightening telescopic rod 1208 to extend downward, driving the connecting frame 1209 fixed at its end to descend synchronously, so that the straightening roller 1210 gradually fits the sheared steel wire. The outer wall of the straightening roller 1210 is provided with a groove for fitting the outer wall of the steel wire to ensure that it can closely fit the surface of the steel wire when pressing down and apply appropriate pressure to prevent the steel wire from shifting or sliding during the straightening process. After the straightening roller 1210 completely presses the steel wire, the motor 1201 is started, and its output shaft drives the gear set in the gear transmission box 1202 to operate. The gear set transfers the rotational power of the motor 1201 to the lead screw 1203, causing it to rotate axially. The outer wall of the lead screw 1203 is in transmission connection with the inner side wall of the sliding block 1204. Therefore, when the lead screw 1203 rotates, the sliding block 1204 moves along the axial direction of the lead screw. One side of the sliding block 1204 is fixedly connected to the connecting rod 1205, so that the movement of the sliding block 1204 will synchronously drive the connecting rod 1205 to perform a horizontal displacement, thereby driving the support plate 1206 to move towards the steel wire. During this process, the straightening roller 1210 rolls on the surface of the steel wire, and the bending deformation caused by the stress release after shearing of the steel wire is eliminated through the rolling pressure, so that it returns to a straight state. The lead screw 1203, the sliding block 1204, the connecting rod 1205, and the support plate 1206 work together to ensure that the straightening roller 1210 rolls smoothly along the length direction of the steel wire, while the straightening cylinder 1207, the straightening telescopic rod 1208, and the connecting frame 1209 provide sufficient downward pressure to ensure that the straightening roller 1210 always remains in contact with the surface of the steel wire during the straightening process, ensuring the straightening effect. When the steel wire straightening is completed, the motor 1201 stops rotating, the sliding block 1204 stops moving, and the straightening roller 1210 stops rolling. Subsequently, the straightening cylinder 1207 retracts in the reverse direction, driving the straightening telescopic rod 1208 and the connecting frame 1209 to rise, so that the straightening roller 1210 disengages from the surface of the steel wire. At the same time, the motor 1201 rotates in the reverse direction, and the lead screw 1203 drives the sliding block 1204 and its associated components back to the initial position to prepare for the next straightening operation. During the whole process, all components cooperate closely to ensure that the steel wire can quickly return to a straight state after shearing, improving the processing accuracy and assembly quality of the retaining ring.

[0071] In this embodiment, the output end of the central processing unit 7 is electrically connected to the input end of the pressing cylinder 1001, the input end of the opening and closing cylinder 1102, the input end of the motor 1201, and the input end of the correction cylinder 1207 respectively. The output end and the input end of the shear force acquisition module 13 and the output end and the input end of the length acquisition module 14 are electrically connected to the input end and the output end of the central processing unit 7 respectively;

[0072] It should be noted that electrical connection refers to the process of transmitting current from one part of an electronic device or circuit to another through conductive materials or conductive components. This connection is a key component in the operation of electronic devices and circuits, ensuring the effective transmission and connection of electron flow in electronic devices. Electrical connection can be achieved by using wires. The specific manner of electrical connection between the central processing unit 7 and the pressing cylinder 1001, the opening and closing cylinder 1102, the motor 1201, the correction cylinder 1207, the shear force acquisition module 13, and the length acquisition module 14 is not specifically limited and can be selected according to actual needs.

[0073] During the production process of elastic circlips, when the steel wire is sheared, due to the applied shear force and the characteristics of the steel wire material, stress release or plastic deformation may occur, resulting in bending deformation of the sheared steel wire segment. Specifically, under the action of the shear force, the high-stress area generated by the blade near the shear point may cause local plastic deformation of the steel wire, and this deformation cannot be fully restored instantaneously during shearing, resulting in slight warping or bending of the end of the steel wire. At the same time, the steel wire may have certain internal stresses remaining during the production process, especially after processes such as rolling and cold drawing. These stresses are suddenly released during shearing, causing non-uniform springback of the steel wire, and further resulting in bending of the sheared steel wire segment. In addition, during the shearing process, if the steel wire is not fully clamped or fixed, the impact force at the moment of shearing may cause the steel wire to have a small displacement, resulting in offset or bending of the shear cut. The existing steel wire shearing device for elastic circlip production cannot prevent the steel wire from bending due to stress release or the influence of the shear force after shearing, which affects the shape accuracy and assembly quality of the circlip. This bending not only affects the shape of the steel wire but may also cause shape errors during subsequent stamping, bending, or curling processes of the circlip, affecting the assembly accuracy of the circlip, resulting in irregular shapes, reducing the clamping force and sealing performance, and affecting its matching degree with the shaft groove or hole groove. In addition, if the steel wire cannot be kept completely straight, additional straightening processes or manual corrections may be required, increasing production costs and processing time.

[0074] Therefore, it is necessary to solve the problem of bending deformation of the steel wire after shearing caused by stress release or the influence of the shearing force. If the steel wire after shearing is bent, it will not only affect the geometric accuracy of the retaining ring, resulting in shape errors during subsequent stamping, bending or curling processes, but may also cause problems such as misalignment, looseness or over-tightening during the assembly process, reducing the clamping force and sealing performance of the retaining ring, affecting its matching degree with the shaft groove or hole groove, and ultimately affecting the stability and service life of the mechanical system. In addition, the bent steel wire may require additional straightening processes or manual correction, increasing production costs, reducing production efficiency, and may cause material waste. Therefore, the significance of solving this technical problem lies in: improving the straightness of the steel wire after shearing, ensuring the dimensional accuracy of the retaining ring from the source, reducing subsequent processing errors, enhancing assembly reliability, while reducing production costs and material losses, enhancing product consistency, improving production efficiency, and ultimately ensuring that the retaining ring can be stably and reliably applied to various precision mechanical structures.

[0075] In this embodiment, the shearing force change coefficient is a parameter used to measure the stability and uniformity of the shearing force applied by the tool 6 during the shearing of the steel wire. It obtains the shearing force data applied by the tool 6 to the steel wire in real time through the shearing force acquisition module 13 during the shearing process, and calculates the relative fluctuation of the shearing force at different time points. The magnitude of the shearing force change coefficient directly affects the judgment of whether the steel wire after shearing is bent: when the shearing force change coefficient is small, it indicates that the shearing force applied by the tool 6 during the shearing process is relatively uniform, the stress distribution near the shearing point is stable, and the end of the steel wire will not undergo plastic deformation or stress release and rebound due to uneven local stress after shearing, thus maintaining a straight state; when the shearing force change coefficient is large, it means that the shearing force of the tool 6 on the steel wire fluctuates greatly, and there may be situations where the local shearing force is too high or too low, causing non-uniform plastic deformation of the steel wire during the shearing process, resulting in warping, bending or bending deformation at the end of the steel wire after shearing. Therefore, the calculation of the shearing force change coefficient can provide an important judgment basis for the deformation situation of the steel wire after shearing, and optimize the shearing process in combination with the length mutation index to ensure the straightness of the steel wire after shearing and improve the accuracy and assembly quality of the retaining ring finished product.

[0076] The acquisition logic of the shearing force change coefficient is as follows:

[0077] S1. Obtain the shearing force applied by the tool 6 to the steel wire at different moments during the shearing of the steel wire by the shearing force acquisition module 13 in real time, and calibrate it as , indicating the shearing force applied by the tool 6 to the steel wire at the moment during the shearing of the steel wire, , where

[0078] S2. Calculate the average value of the shearing forces applied by the tool 6 to the steel wire at different moments during the shearing process of the steel wire , according to the formula: ;

[0079] S3. Calculate the shearing force variation coefficient, and the calculation expression is:

[0080]

[0081] In the formula, is the shearing force variation coefficient.

[0082] In this embodiment, the length mutation index is a parameter used to measure the length stability and mutation degree of the steel wire after shearing. By collecting the actual lengths of the steel wire at different moments after shearing and calculating the variation degree relative to the average length, it is possible to evaluate whether abnormal deformation occurs to the steel wire during the shearing process. The length mutation index obtains the length data of the steel wire at different time points after shearing in real time through the length acquisition module 14, and uses a mathematical formula to calculate the fluctuation range of the steel wire length, and finally generates a length mutation index value reflecting the length stability of the steel wire. The size of the length mutation index is directly related to judging whether the steel wire is bent after shearing: when the length mutation index value is small, it indicates that the length of the steel wire after shearing is basically stable, the shearing quality is high, the steel wire is not affected by obvious stress release or shearing force fluctuation, and thus significant bending deformation will not occur; when the length mutation index value is large, it means that the length of the steel wire after shearing fluctuates greatly at different time points, indicating that uneven stress release, unstable shearing force action or local deformation caused by material properties may occur during the shearing process, resulting in bending deformation of the steel wire after shearing. By calculating the length mutation index, an objective basis can be provided for judging the shearing quality of the steel wire, and the shearing parameters can be optimized in combination with the shearing force variation coefficient to ensure the straightness of the steel wire after shearing and improve the manufacturing accuracy and assembly quality of the circlip.

[0083] The acquisition logic of the length mutation index is as follows:

[0084] S1. Through the length acquisition module 14, the actual lengths of the steel wire at different moments during the shearing process of the steel wire by the tool 6 are obtained in real time and calibrated as , represents the actual length of the steel wire at the moment during the shearing process of the steel wire by the tool 6, , is a positive integer;

[0085] S2. Calculate the average value of the actual lengths of the steel wire at different moments during the shearing process of the steel wire by the tool 6 , according to the formula: ;

[0086] S3. Calculate the length mutation index, and the calculation expression is:

[0087]

[0088] In the formula, is the length mutation index.

[0089] In this embodiment, the expression formula of the bending judgment coefficient is:

[0090] After and are dimensionless processed, they are analyzed formulaically by the central processing unit 7 according to the formula:

[0091]

[0092] In the formula, is the bending judgment coefficient, and are respectively the preset proportionality coefficients of the shear force change coefficient and the length mutation index , and and are both greater than 0;

[0093] It can be seen from the calculation expression that the larger the shear force change coefficient and the length mutation index are, the larger the bending judgment coefficient will be;

[0094] It should be noted that dimensionless is a process of expressing physical quantities in a dimensionless form. By this way, the influence of units on physical problems can be eliminated, making the problem more concise and general; the preset proportionality coefficients of the shear force change coefficient and the length mutation index and are to more flexibly adapt to different working conditions and environmental changes in actual monitoring. These deviation coefficients can be adjusted according to specific situations to improve the performance and applicability of the monitoring system.

[0095] In this embodiment, the preset reference threshold of the bending judgment coefficient is set to . The calculated bending judgment coefficient is compared with the preset reference threshold of the bending judgment coefficient by the central processing unit 7. According to the comparison result, it is judged whether the steel wire is bent after being sheared by the cutter 6, and the working states of the pressing mechanism 10, the opening and closing mechanism 11 and the straightening mechanism 12 are controlled according to the comparison result. The specific judgment is as follows:

[0096] When occurs, after the tool 6 shears the steel wire, the steel wire does not bend or deform, generating a normal signal. After the central processing unit 7 receives the normal signal, it generates a reset signal, a standby signal, and an opening signal, and transmits the reset signal to the pressing cylinder 1001. After the pressing cylinder 1001 receives the reset signal, it controls the pressing mechanism 10 to perform a reset operation, transmits the standby signal to the motor 1201 and the correction cylinder 1207 respectively. After the motor 1201 and the correction cylinder 1207 receive the standby signal, they control the correction mechanism 12 to perform a standby operation, and transmit the opening signal to the opening and closing cylinder 1102. After the opening and closing cylinder 1102 receives the opening signal, it controls the opening and closing mechanism 11 to perform an opening operation;

[0097] The reset operation means that after the pressing cylinder 1001 receives the reset signal, it controls the pressing telescopic rod 1002 to retract, and then controls the pressing block 1003 to gradually move away from the surface of the steel wire until it completely disengages from the steel wire and no longer applies a pressing force to the steel wire. At the same time, the pressing cylinder 1001 continues to operate to ensure that the pressing telescopic rod 1002 and the pressing block 1003 completely return to the initial position to prepare for the next shearing operation, that is, to control the pressing mechanism 10 to perform a reset operation.

[0098] The standby operation means that after the motor 1201 and the correction cylinder 1207 receive the standby signal, they maintain the initial position and do not perform any actions, waiting for the next instruction, that is, to control the correction mechanism 12 to perform a standby operation.

[0099] The opening operation means that after the opening and closing cylinder 1102 receives the opening signal, the output shaft of the opening and closing cylinder 1102 pushes the opening and closing telescopic rod 1103 to retract, driving the connecting block 1104 to displace. Through the set rotating shaft 1105, fixed shaft 1106, and fixed block 1107, the shearing groove plate 9 is driven to rotate, realizing the opening of the shearing groove, and then enabling the sheared steel wire to fall into the storage bin 5, that is, to control the opening and closing mechanism 11 to perform an opening operation.

[0100] When occurs, after the tool 6 shears the steel wire, the steel wire bends or deforms, generating an abnormal signal. After the central processing unit 7 receives the abnormal signal, it generates a holding signal and a correction signal, transmits the holding signal to the pressing cylinder 1001 and the opening and closing cylinder 1102 respectively. After the pressing cylinder 1001 and the opening and closing cylinder 1102 receive the holding signal, they control the pressing mechanism 10 and the opening and closing mechanism 11 to perform a holding operation respectively, and transmit the correction signal to the motor 1201 and the correction cylinder 1207 respectively. After the motor 1201 and the correction cylinder 1207 receive the correction signal, they control the correction mechanism 12 to perform a correction operation.

[0101] The holding operation means that after the pressing cylinder 1001 and the opening / closing cylinder 1102 receive the holding signal, the pressing mechanism 10 continues to maintain the pressing state, enabling the pressing block 1003 to stably clamp both ends of the steel wire, preventing the steel wire from shifting during the straightening process. Meanwhile, the opening / closing mechanism 11 keeps the shearing groove plate 9 in the closed state, providing a stable bottom support for the steel wire, ensuring that the straightening roller 1210 can apply uniform pressure, and enabling the steel wire to smoothly return to a straight state. During the whole process, the pressing mechanism 10 and the opening / closing mechanism 11 maintain the current working state until the straightening mechanism 12 completes the straightening of the steel wire, ensuring the stability and high efficiency of the straightening process.

[0102] The straightening operation means that after the motor 1201 and the straightening cylinder 1207 receive the straightening signal, the straightening cylinder 1207 starts and pushes the straightening telescopic rod 1208 downward, making the straightening roller 1210 fit the sheared steel wire and applying appropriate pressure to ensure stable contact. Subsequently, the motor 1201 drives the gear transmission box 1202, driving the lead screw 1203 to rotate, causing the sliding block 1204 to move axially, and then pushing the connecting rod 1205 and the support plate 1206, driving the straightening roller 1210 to roll on the surface of the steel wire, eliminating the bending deformation caused by stress release after shearing through rolling, and making the steel wire return to a straight state. After the straightening is completed, the motor 1201 stops, and the straightening cylinder 1207 retracts, causing the straightening roller 1210 to disengage from the steel wire and driving all related components to reset, preparing for the next straightening.

[0103] The above formulas are all dimensionless and take their numerical values for calculation. The formula is obtained by collecting a large amount of data for software simulation to get a formula closest to the actual situation. The preset parameters in the formula are set by those skilled in the art according to the actual situation.

[0104] It should be understood that in various embodiments of the present application, the magnitudes of the serial numbers of the above processes do not mean the sequence of execution. The execution sequence of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0105] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or by a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0106] In several embodiments provided in the present application, it should be understood that the disclosed overall system, device, and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another overall system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of devices or units can be in electrical, mechanical, or other forms.

[0107] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0108] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0109] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claimed rights.

Claims

1. A wire shearing device for the production of elastic retaining rings, comprising a base (1), a wire placing roller (2), a straightening roller group (3) for straightening the wire, a shearing groove body (4) for placing the wire, a storage bin (5) for storing the sheared wire, and a tool (6) for shearing the wire, characterized in that: The top of the base (1) is provided with a central processing unit (7), a mounting frame (8) and an opening and closing mechanism (11), the bottom of the shearing slot body (4) is provided with a shearing slot plate (9), and the top of the mounting frame (8) is provided with a clamping mechanism (10) and a correcting mechanism (12), the clamping mechanism (10) is used to clamp the two ends of the steel wire entering the shearing position, the opening and closing mechanism (11) is used to control the opening and closing of the shearing slot plate (9), and the correcting mechanism (12) is used to straighten the steel wire after shearing; Also includes: A shear force acquisition module (13) is arranged on one side of the top of the cutter (6) and is used to obtain in real time the shear force applied by the cutter (6) to the steel wire at different times during the process of the cutter (6) shearing the steel wire, and to generate a shear force variation coefficient through a central processor (7); The acquisition logic of the shear force variation coefficient is: S1. The shearing force acquisition module (13) is used to obtain in real time the shearing force applied by the tool (6) to the steel wire at different moments during the shearing of the steel wire by the tool (6), and calibrate it as , indicating the shearing force applied by the tool (6) to the steel wire at the moment during the shearing of the steel wire by the tool (6), , where \(n\) is a positive integer; S2. Calculate the average value of the shearing forces applied by the tool (6) to the steel wire at different moments during the shearing process of the steel wire by the tool (6). , according to the formula: ; S3. Calculate the shear force variation coefficient. The calculation expression is: In the formula, is the shear force change coefficient; A length acquisition module (14) is arranged on one side of the cutter (6) and is used to obtain in real time the actual length of the steel wire at different moments in the process of the cutter (6) shearing the steel wire, and to generate a length mutation index through a central processor (7); The acquisition logic of the length mutation index is: S1. The actual length of the steel wire at different moments during the shearing of the steel wire by the tool (6) is obtained in real time through the length acquisition module (14) and calibrated as , indicating the actual length of the steel wire at the moment during the shearing of the steel wire by the tool (6), , where \(n\) is a positive integer; S2. Calculate the average value between the actual lengths of the steel wire at different moments during the process of the cutter (6) shearing the steel wire , according to the formula: ; S3. Calculate the length mutation index. The calculation expression is: In the formula, is the length mutation index; The generated shear force variation coefficient and length mutation index are comprehensively analyzed by the central processing unit (7) to generate a bending judgment coefficient, which is then compared with a preset bending judgment coefficient reference threshold value, and it is determined based on the comparison result whether the steel wire is bent and deformed after the cutter (6) shears the steel wire, and the working states of the clamping mechanism (10), the opening and closing mechanism (11) and the correction mechanism (12) are controlled based on the comparison result.

2. The wire shearing device for producing elastic retaining rings according to claim 1, wherein: The clamping mechanism (10) comprises a clamping cylinder (1001), a clamping telescopic rod (1002) and a clamping block (1003); the bottom of the clamping cylinder (1001) is fixedly connected to the top of the mounting frame (8); the output shaft of the clamping cylinder (1001) is drivingly connected to one end of the clamping telescopic rod (1002); the other end of the clamping telescopic rod (1002) is fixedly connected to the top of the clamping block (1003); and the bottom of the clamping block (1003) is provided with a groove for fitting against the outer wall of the steel wire.

3. The wire shearing device for producing elastic retaining rings according to claim 2, characterized in that: The opening and closing mechanism (11) includes an opening and closing cylinder mounting plate (1101), an opening and closing cylinder (1102), an opening and closing telescopic rod (1103), a connecting block (1104), a rotating shaft (1105), a fixed shaft (1106), and a fixed block (1107). The bottom of the opening and closing cylinder mounting plate (1101) is fixedly connected to the top of the base (1), the top of the opening and closing cylinder mounting plate (1101) is fixedly connected to the bottom of the opening and closing cylinder (1102), the output shaft of the opening and closing cylinder (1102) is drivingly connected to one end of the opening and closing telescopic rod (1103), the other end of the opening and closing telescopic rod (1103) is fixedly connected to one side of the connecting block (1104), the other side of the connecting block (1104) is fixedly connected to the outer wall of the rotating shaft (1105), the inner wall of the rotating shaft (1105) is movably connected to the outer wall of the fixed shaft (1106) through a bearing, both ends of the fixed shaft (1106) are fixedly connected to the inner walls of the fixed blocks (1107), and one side of the fixed block (1107) is fixedly connected to one side of the shear groove plate (9).

4. The wire shearing device for producing elastic retaining rings according to claim 3, characterized in that: The correction mechanism (12) includes a motor (1201), a gear transmission box (1202), a lead screw (1203), a sliding block (1204), a connecting rod (1205), a support plate (1206), a correction cylinder (1207), a correction telescopic rod (1208), a connecting frame (1209), and a correction roller (1210). The bottom of the motor (1201) is fixedly connected to the top of the mounting frame (8), the output shaft of the motor (1201) is drivingly connected to the input shaft of the gear transmission box (1202), the output shaft of the gear transmission box (1202) is drivingly connected to one end of the lead screw (1203), the outer wall of the lead screw (1203) is drivingly connected to the inner wall of the sliding block (1204), one side of the sliding block (1204) is fixedly connected to one side of the connecting rod (1205), the other side of the connecting rod (1205) is fixedly connected to one side of the support plate (1206), the top of the support plate (1206) is fixedly connected to the bottom of the correction cylinder (1207), the output shaft of the correction cylinder (1207) is drivingly connected to one end of the correction telescopic rod (1208), the other end of the correction telescopic rod (1208) is fixedly connected to the top of the connecting frame (1209), the inner walls of the connecting frame (1209) are fixedly connected to both ends of the middle rotating shaft of the correction roller (1210), and the outer wall of the correction roller (1210) is provided with a groove for fitting the outer wall of the steel wire.

5. The wire shearing device for producing an elastic retaining ring according to claim 4, characterized in that: The output ends of the central processing unit (7) are electrically connected to the input ends of the pressing cylinder (1001), the opening and closing cylinder (1102), the motor (1201), and the correction cylinder (1207) respectively. The output end and the input end of the shear force acquisition module (13) and the output end and the input end of the length acquisition module (14) are electrically connected to the input end and the output end of the central processing unit (7) respectively.

6. The wire shearing device for producing elastic retaining rings according to claim 5, characterized in that, The expression formula of the bending judgment coefficient is as follows: Through the central processing unit (7) for formulaic analysis, based on the formula: In the formula, is the bending judgment coefficient, and are respectively the preset proportionality coefficients of the shear force change coefficient and the length mutation index , and and are both greater than 0.

7. The wire shearing device for producing elastic retaining rings according to claim 6, characterized in that, Set the preset reference threshold of the bending judgment coefficient to , and the calculated bending judgment coefficient is compared with the preset reference threshold of the bending judgment coefficient . According to the comparison result, it is judged whether the steel wire is bent and deformed after the tool (6) shears the steel wire, and the working states of the pressing mechanism (10), the opening and closing mechanism (11) and the straightening mechanism (12) are controlled according to the comparison result. The specific judgment is as follows: When When the wire does not bend or deform after being sheared by the cutting tool (6), a normal signal is generated. After receiving the normal signal, the central processing unit (7) generates a reset signal, a standby signal, and an opening signal, and transmits the reset signal to the pressing cylinder (1001). After receiving the reset signal, the pressing cylinder (1001) controls the pressing mechanism (10) to perform a reset operation, transmits the standby signal to the motor (1201) and the correction cylinder (1207) respectively. After receiving the standby signal, the motor (1201) and the correction cylinder (1207) control the correction mechanism (12) to perform a standby operation, and transmit the opening signal to the opening and closing cylinder (1102). After receiving the opening signal, the opening and closing cylinder (1102) controls the opening and closing mechanism (11) to perform an opening operation; When After the tool (6) shears the steel wire, the steel wire is bent and deformed, generating an abnormal signal. After receiving the abnormal signal, the central processing unit (7) generates a holding signal and a correction signal, and transmits the holding signal to the pressing cylinder (1001) and the opening and closing cylinder (1102) respectively. After receiving the holding signal, the pressing cylinder (1001) and the opening and closing cylinder (1102) control the pressing mechanism (10) and the opening and closing mechanism (11) to perform the holding work respectively, and transmit the correction signal to the motor (1201) and the correction cylinder (1207) respectively. After receiving the correction signal, the motor (1201) and the correction cylinder (1207) control the correction mechanism (12) to perform the correction work.

Images