Wire spring hole press contact device

Abstract

The application discloses a wire spring hole crimping device, which comprises a base, a crimping jig arranged on the base and provided with an axial positioning hole for accommodating a wire spring hole, a plurality of crimping pieces arranged in the circumferential direction of the axial positioning hole and movable in the radial direction, a driving ring rotatably arranged on the base and surrounding the crimping jig, and a driving mechanism for driving the driving ring to rotate, wherein an inner wall of the driving ring is provided with a driving curved surface corresponding to each crimping piece, and when the driving ring rotates, all the crimping pieces are synchronously driven to move in the radial direction through the driving curved surface, so as to perform a crimping action on the wire spring hole in the axial positioning hole. The device realizes synchronous driving of the radial movement of each crimping piece by a single power source, has the advantages of uniform crimping force, good symmetry of crimping points and extremely high product consistency, solves the quality problems of skewing and different crimping depths caused by manual crimping or crimping by multiple independent cylinders, and has the advantages of compact structure, reliable action and greatly improved crimping precision and production efficiency.

Description

Technical Field

[0001] This application relates to the field of wire spring hole crimping technology, specifically to a wire spring hole crimping device. Background Technology

[0002] Spring holes are electrical components widely used in electrical connectors. They have a precise structure, typically consisting of multiple cylindrical parts nested together. These parts are crimped together to prevent loosening. For example, an annular groove is created on the outer circumference of the inner cylindrical part. During crimping, the sidewall of the outer cylindrical part is pressed into the groove to form a protrusion, thus using the fit between the protrusion and the groove to achieve axial fixation. Currently, the industry primarily uses manual crimping for spring holes. Operators use crimping pliers to press each spring hole individually onto its circumferential crimping points. This method has significant drawbacks: firstly, the crimping force depends on hand strength, leading to significant force deviations at each crimping point. Over-crimping can deform the spring hole, while under-crimping can cause loosening, resulting in low product yield; secondly, manual operation is slow, making it difficult to meet the needs of large-scale production; and thirdly, prolonged repetitive actions can easily cause wrist strain and high labor intensity for employees. It is evident that existing technologies lack a wire spring hole crimping device that can achieve simultaneous crimping at multiple pressure points, has a compact structure, and is highly adaptable, thus failing to meet the comprehensive demands of modern manufacturing for crimping accuracy, efficiency, and cost. Therefore, developing a wire spring hole crimping device that achieves simultaneous crimping through an integrated structure and is easily adjustable to accommodate multiple specifications has become a critical issue that the industry urgently needs to address. Utility Model Content

[0003] The purpose of this application is to overcome the shortcomings of the prior art and provide a wire spring hole crimping device with a compact structure, uniform crimping force, and good consistency.

[0004] The technical solution adopted in this application is as follows: A wire spring hole crimping device includes: a base; a crimping fixture disposed on the base and having an axial positioning hole for accommodating the wire spring hole; a plurality of crimping members circumferentially arranged around the axial positioning hole and movable radially; a drive ring rotatably disposed on the base and surrounding the crimping fixture; and a drive mechanism for driving the drive ring to rotate; wherein, the inner wall of the drive ring has a drive surface corresponding to each of the crimping members, and when the drive ring rotates, it synchronously drives all the crimping members to move radially through the drive surface to perform a crimping action on the wire spring hole in the axial positioning hole.

[0005] In this technical solution, multiple crimping components are arranged circumferentially around the axial positioning hole. When the drive ring rotates, it synchronously pushes all crimping components radially through the inner wall drive curved surface. This avoids the crimping timing difference caused by traditional multi-cylinder separate driving of crimping components, ensuring that the force on each crimping point of the wire spring hole is basically consistent, the crimping point depth is highly consistent, and the performance qualification rate of the wire spring hole is effectively improved. This device only requires the drive mechanism to drive the drive ring to rotate once to complete the synchronous crimping of all crimping components, which effectively improves the crimping efficiency compared to traditional step-by-step crimping. The crimping fixture, crimping components, and drive ring are all integrated on the base, with a compact structure, reliable operation, small space occupation, and improved crimping accuracy and production efficiency.

[0006] The crimping fixture includes a fixed disc, which is fixed on the base. It has an axial positioning hole in the center and multiple guide holes in the circumference for accommodating the crimping component and allowing it to slide radially. The driving ring is sleeved on the outside of the fixed disc.

[0007] In this technical solution, the specific structure of the fixed disc and guide hole provides precise radial guidance and support for the crimping component, ensuring its stability and straightness during movement and preventing poor crimping caused by component wobbling. The drive ring is sleeved outside the fixed disc, forming a clever structure of inner and outer ring cooperation, making force transmission very direct and efficient, with a compact structure and good rigidity.

[0008] The crimping fixture also includes a cover plate, which is fixed to the top of the fixed disc and covers the drive ring to restrict the axial movement of the drive ring; the cover plate is provided with a centering hole coaxial with the axial positioning hole.

[0009] In this technical solution, the cover plate plays multiple key roles. First, by covering the drive ring, it effectively restricts the axial movement of the drive ring, ensuring that the equipment can maintain a precise transmission relationship even under long-term vibration. Second, the centering hole and the axial positioning hole on the cover plate are coaxial, providing auxiliary guidance and secondary positioning for the insertion of the wire spring hole, preventing the wire spring hole from being skewed during placement, and further ensuring the stability of the crimping quality.

[0010] The crimping fixture also includes a support member, which is fixed to the bottom of the fixed disc and partially extends into the axial positioning hole to form a support platform for supporting the wire spring hole.

[0011] In this technical solution, the support component provides a reliable axial reference surface and supporting force for the spring hole during the crimping process. This allows the crimped part of the spring hole to be accurately aligned with the radial crimping component, avoiding defects such as crimping deformation and incomplete crimping caused by the spring hole being suspended or misaligned.

[0012] Each of the pressing members has a stop at its inner end; when the pressing member slides into the axial positioning hole to the pressing position, the stop abuts against the support platform to limit the maximum pressing stroke of the pressing member.

[0013] In this technical solution, the structure forms a mechanical hard limit, which precisely and reliably limits the maximum pressing depth of the crimping part through the contact between the stop and the support platform. This effectively prevents the spring hole from being crushed or damaged due to excessive pressure or stroke exceeding the limit, providing overload protection, improving the reliability of the equipment and the product yield, and is particularly suitable for the processing of precision parts.

[0014] The driving surface is a surface with a continuously varying radius relative to the rotation center of the driving ring.

[0015] In this technical solution, the driving surface is defined as a surface with a continuously varying radius, ensuring that the crimping component can achieve smooth, impact-free radial feed and retraction when the driving ring rotates. This continuously varying characteristic makes the crimping process stable and controllable, avoiding abrupt changes or jamming, thus ensuring crimping quality, reducing equipment noise and wear, and extending service life.

[0016] The drive mechanism is a linear cylinder, and the linear output of the linear cylinder is converted into the rotational motion of the drive ring through a motion conversion mechanism.

[0017] This technical solution employs a linear cylinder combined with a motion conversion mechanism. This utilizes the mature, low-cost, and easily controlled and maintained linear cylinder as a power source, significantly reducing the manufacturing and maintenance costs of the equipment. Simultaneously, this solution converts linear motion into rotary motion, resulting in a simple, reliable structure and stable power output.

[0018] The motion conversion mechanism is a linkage mechanism or a crank-rocker mechanism.

[0019] In this technical solution, the linkage mechanism or crank-rocker mechanism is a classic and reliable method of mechanical motion conversion. They offer advantages such as high transmission efficiency, robust structure, long service life, and well-defined motion relationships. Using these mechanisms ensures the precise conversion of the cylinder's linear motion into the rotational motion required by the drive ring, resulting in accurate and error-free operation.

[0020] The wire spring hole crimping device also includes an elastic element that applies pressure to the crimping member so that the end of the crimping member always abuts against the driving curved surface.

[0021] In this technical solution, the elastic element ensures that the end of the crimping component is always tightly abutting against the driving curved surface, eliminating gaps caused by manufacturing tolerances and wear. This brings two benefits: first, it achieves precise transmission without idle stroke, improving the control accuracy of crimping; second, it provides a precise reset force after crimping, ensuring that the crimping component can be withdrawn in a timely and reliable manner, preparing for the next work cycle.

[0022] The wire spring hole crimping device also includes a detection unit and a finished product storage box; the detection unit is used to detect whether the wire spring hole in the axial positioning hole has been removed; the finished product storage box is used to collect the finished wire spring hole products after crimping.

[0023] In this technical solution, the addition of a detection unit and a finished product storage box automates and intelligentizes the pressing process. The detection unit prevents the handling module from accidentally adding new materials before removing the finished product, avoiding the risks of material stacking and equipment collisions, and improving equipment safety. The finished product storage box enables the collection and containment of finished products. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the wire spring hole crimping device provided in the embodiments of this application; Figure 2 The assembly formed by some components of the wire spring hole crimping device provided in the embodiments of this application. Figure 1 ; Figure 3 The assembly formed by some components of the wire spring hole crimping device provided in the embodiments of this application. Figure 2 ; Figure 4 A cross-sectional view of an assembly formed from some components of the wire spring hole crimping device provided in the embodiments of this application. Figure 1 ; Figure 5 A cross-sectional view of an assembly formed from some components of the wire spring hole crimping device provided in the embodiments of this application. Figure 2 ; Figure 6 Assembly of the wire spring hole crimping device provided in the embodiments of this application Figure 3 ; Figure 7 This is an assembly drawing of the fixed disc and support provided in the embodiments of this application; Figure 8 A cross-sectional view of the assembly formed by the fixed disc and the support member provided in the embodiments of this application; Figure 9 A schematic diagram showing the state in which the crimping member provided in the embodiment of this application crimps the spring hole located on the support member; Figure 10 This is a schematic diagram of the structure of the crimping member provided in the embodiments of this application; Figure 11 for Figure 1 Enlarged view of point A in the middle.

[0025] List of components and reference numerals: 1. Base; 2. Crimping fixture, 21. Fixed disc, 211. Axial positioning hole, 212. Guide hole, 22. Cover plate, 221. Centering hole; 23. Support component, 231. Support platform, 24. Screw hole; 3-wire spring hole; 4. Press-fit parts, 41. Stop parts; 5 drive rings, 51 drive surfaces; 6 linear cylinders; 71 U-shaped fork, 72 sliding shaft, 73 drive rod, 74 slide rail; 8 springs; 9 detection units; 10 Finished storage boxes. Detailed Implementation

[0026] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0028] Furthermore, it should be understood in the description of this application that the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "lateral," and "longitudinal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0031] In the embodiments of this application, reference is made to Figures 1 to 11 This application provides a spring-loaded hole crimping device. For ease of explanation and understanding, the following descriptions are based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is merely a specific example and illustrative illustration, and does not constitute a specific limitation on the technical solution provided in this application.

[0032] like Figure 1 , Figure 5 and Figure 6 As shown, the wire spring hole crimping device includes a base 1, a crimping fixture 2, multiple crimping parts 4, a drive ring 5, and a drive mechanism. The crimping fixture 2 is disposed on the base 1 and has an axial positioning hole 211 for accommodating the wire spring hole 3. The multiple crimping parts 4 are arranged circumferentially around the axial positioning hole 211 and can move radially. The drive ring 5 is rotatably disposed on the base 1 and surrounds the crimping fixture 2. The drive mechanism is used to drive the drive ring 5 to rotate. The inner wall of the drive ring 5 is provided with a drive surface 51 that corresponds to and cooperates with each crimping part 4. When the drive ring 5 rotates, it synchronously drives all the crimping parts 4 to move radially through the drive surface 51 to perform the crimping action on the wire spring hole 3 in the axial positioning hole 211.

[0033] This application solves the problems of uneven force distribution at pressing points, low pressing accuracy, and asynchronous operation of decentralized pressing mechanisms in traditional manual pressing by integrating the base 1, pressing fixture 2, surrounding pressing parts 4, drive ring 5, and drive mechanism. Specifically, multiple pressing parts 4 are arranged circumferentially around the axial positioning hole 211. When the drive ring 5 rotates, it synchronously pushes all pressing parts 4 radially through the drive curved surface 51 on the inner wall, avoiding the pressing timing difference caused by the separate driving of pressing parts 4 by multiple cylinders in traditional methods. This ensures that the force at each pressing point of the wire spring hole 3 is basically consistent, the pressing point depth is highly consistent, and the performance qualification rate of the wire spring hole 3 is effectively improved. This device only requires the drive mechanism to drive the drive ring 5 to rotate once to complete the synchronous pressing of all pressing parts 4, which effectively improves the pressing efficiency compared to traditional step-by-step pressing. The pressing fixture 2, pressing parts 4, and drive ring 5 are all integrated on the base 1, which is compact, reliable in operation, occupies little space, and improves pressing accuracy and production efficiency. It should be noted that... Figure 5 and Figure 6 The accompanying drawing illustrates an embodiment of the crimping device with four crimping members 4. This embodiment is not intended to limit the scope of this application. In other embodiments, other suitable numbers of crimping members 4 can be designed according to actual needs. Furthermore, the structural embodiment of the spring hole 3 shown in the drawing is not intended to limit the scope of this application. In other embodiments, the spring hole 3 can also be of other types and specifications.

[0034] As a preferred embodiment of this application, such as Figure 3 , Figure 4 and Figure 5As shown, the crimping fixture 2 includes a fixed disc 21, which is fixed to the base 1. The fixed disc 21 has an axial positioning hole 211 in its center and multiple guide holes 212 arranged circumferentially to accommodate the crimping component 4 and allow radial sliding. A drive ring 5 is sleeved on the outside of the fixed disc 21. Specifically, the fixed disc 21 can be fixed to the base 1 with screws to ensure reliable installation. The guide holes 212 arranged circumferentially on the fixed disc 21 precisely match the shape of the crimping component 4, providing rigid guidance for the radial movement of the crimping component 4. This prevents radial skewing or circumferential rotation of the crimping component 4 during movement, effectively reducing the movement deviation of the crimping component 4 and ensuring that the crimping component 4 is always aligned with the preset pressing point of the spring hole 3. This ensures the stability and straightness of the crimping component 4 during movement and avoids poor crimping caused by the shaking of the crimping component 4. Preferably, the inner wall of the guide holes 212 can be polished to reduce friction and wear between the crimping component 4 and the guide holes 212, extend the service life of the crimping component 4, and reduce maintenance costs. The drive ring 5 is sleeved outside the fixed disk 21 to ensure that the drive ring 5 and the fixed disk 21 are coaxial. The contact accuracy between the drive curved surface 51 on the inner wall of the drive ring 5 and the end of the pressing part 4 is improved, avoiding excessive force on some pressing parts 4 and insufficient force on others due to coaxiality deviation. This further ensures the consistency of multi-point pressing. Moreover, it forms a clever structure of inner and outer ring cooperation, which makes the force transmission very direct and efficient. The structure is compact and has good rigidity.

[0035] In a preferred embodiment, such as Figure 2 and Figure 4 As shown, the crimping fixture 2 also includes a cover plate 22, which is fixed to the top of the fixed disc 21 and covers the drive ring 5 to restrict the axial movement of the drive ring 5; the cover plate 22 is provided with a centering hole 221 coaxial with the axial positioning hole 211. Specifically, through screw holes 24 can be provided on the cover plate 22 and the fixed disc 21, and the two are fixed by screws. After fixing, the cover plate 22 covers the drive ring 5, which plays multiple key roles. First, it effectively restricts the axial movement of the drive ring 5, avoids sudden changes in the pressing force caused by axial movement, and ensures that the equipment can maintain a precise transmission relationship under long-term vibration environment. Second, the centering hole 221 on the cover plate 22 is coaxial with the axial positioning hole 211. During feeding, the centering hole 221 can be used to observe or assist in positioning, avoiding eccentricity when the spring hole 3 is inserted. It provides auxiliary guidance and secondary positioning for the insertion of the spring hole 3, prevents the spring hole 3 from being skewed during placement, and further ensures the stability of the pressing quality. Third, the cover plate 22 can cover the mating gap between the fixed disc 21 and the drive ring 5, preventing workshop dust and metal debris from entering the mechanism, avoiding impurities causing the drive ring 5 to jam or the pressing part 4 to wear, reducing the failure rate of the mechanism, and extending the equipment maintenance cycle.

[0036] In a preferred embodiment, such as Figure 4 , Figure 7 , Figure 8 and Figure 9As shown, the crimping fixture 2 also includes a support member 23, which is fixed to the bottom of the fixed disc 21 and partially extends into the axial positioning hole 211 to form a support platform 231 for supporting the spring hole 3. Specifically, the support member 23 can also be fixed to the bottom of the fixed disc 21 by screws. Moreover, to ensure that the bottom surface of the fixed disc 21 is flat, it is preferable to embed the support member 23 entirely into the bottom of the fixed disc 21. The support member 23 extends into the axial positioning hole 211 to form the support platform 231, providing a reliable axial reference surface and supporting force for the spring hole 3 during the crimping process. After the spring hole 3 is placed in the positioning hole, its bottom fits against the support platform 231, preventing the spring hole 3 from sliding down during the crimping process. This ensures that the crimping member 4 always acts on the preset crimping point position of the spring hole 3, avoiding defects such as crimping deformation and incomplete crimping caused by the spring hole 3 being suspended or inaccurately positioned. In addition, by replacing the support member 23 with a support platform 231 of different heights, the axial positioning position of the spring hole 3 in the positioning hole can be adjusted to adapt to spring holes of different lengths or spring holes with different pressing point positions. There is no need to replace the entire crimping fixture 2, which improves the adaptability of the equipment and meets the needs of multi-variety small-batch production.

[0037] Furthermore, such as Figure 9 and Figure 10 As shown, each crimping member 4 has a stop 41 at its inner end; when the crimping member 4 slides into the axial positioning hole 211 to the crimping position, the stop 41 abuts against the support platform 231 to limit the maximum crimping stroke of the crimping member 4. Figure 9 As shown, the stop 41 abuts against the support platform 231. In this state, the pressing member 4 is forcibly restricted from continuing to move towards the spring hole 3, forming a mechanical hard limit. Through the abutment of the stop 41 against the support platform 231, the maximum pressing depth of the pressing member 4 is precisely and reliably limited. This effectively prevents the spring hole 3 from being crushed or damaged due to excessive pressure or stroke exceeding the limit, providing overload protection and improving the reliability of the equipment and product yield. It is particularly suitable for the machining of precision parts. Stroke limiting is achieved through a mechanical structure, eliminating the need for additional electronic limit sensors and supporting control systems, thus reducing the risk of electronic component failure.

[0038] In a preferred embodiment of this application, the driving surface 51 is a surface with a continuously varying radius relative to the rotation center of the driving ring 5, ensuring that the crimping member 4 can achieve smooth, impact-free radial feed and retraction when the driving ring 5 rotates. This continuously varying characteristic makes the crimping process stable and controllable, avoiding abrupt changes or jamming, ensuring crimping quality, reducing equipment noise and wear, and extending service life. The smooth movement of the crimping member 4 reduces frictional impact with the guide hole 212, and the gradual change in contact force between the driving ring 5 and the crimping member 4 helps reduce equipment operating noise and improve the workshop working environment. Preferably, the driving surface 51 can be designed so that its projection on the horizontal plane is an Archimedean spiral. When the driving ring 5 rotates, the extreme radius of the contact point between the driving surface 51 and the end of the crimping member 4 increases or decreases uniformly with the rotation angle, causing the radial movement distance of the crimping member 4 to be linearly related to the rotation angle of the driving ring 5, avoiding local force concentration caused by abrupt displacement of traditional asymmetric curved surfaces. When the drive ring 5 rotates at a constant angular velocity, the rate of change of the extreme diameter of the Archimedes spiral is constant, and the radial movement speed of the corresponding crimping piece 4 is constant, with no sudden acceleration or deceleration; at the same time, the acceleration is zero, avoiding the impact collision between the crimping piece 4 and the spring hole 3 at the moment of contact, effectively reducing the scratch rate on the surface of the spring hole 3.

[0039] As a preferred embodiment of this application, such as Figure 1 As shown, the driving mechanism is a linear cylinder 6, and the linear output of the linear cylinder 6 is converted into the rotational motion of the drive ring 5 through a motion conversion mechanism. This scheme, using a linear cylinder 6 combined with a motion conversion mechanism, utilizes the mature, low-cost, and easy-to-control and maintain linear cylinder 6 as a power source, significantly reducing the manufacturing and maintenance costs of the equipment. Simultaneously, this scheme converts linear motion into rotational motion, resulting in a simple and reliable structure and stable power output. Specifically, existing technologies for converting linear motion into rotational motion are very mature, and these technologies are all of reference value to this application.

[0040] In a preferred embodiment, the motion conversion mechanism is a linkage mechanism or a crank-rocker mechanism. Figure 1 The figure shows an embodiment of the motion conversion mechanism as a linkage mechanism, specifically, as follows: Figure 1 and Figure 11As shown, a U-shaped fork 71 is connected to the end of the piston rod of the linear cylinder 6. A sliding shaft 72 is provided inside the U-shaped fork 71. A drive rod 73 is fixedly connected to the drive ring 5. The drive rod 73 has an elongated slide rail 74. The sliding shaft 72 slides through the slide rail 74. When the piston rod of the linear cylinder 6 extends or retracts, the sliding shaft 72 slides along the slide rail 74, thereby driving the drive ring 5 to rotate through the drive rod 73. This is a special form of linkage mechanism. In this mechanism, the piston rod of the linear cylinder 6 and the U-shaped fork 71 constitute a rigid component and are also the driving component, outputting linear motion through the linear cylinder 6. The drive rod 73 and the drive ring 5 constitute a rigid component and are also the driven component, ultimately outputting rotational motion. The cooperation between the sliding shaft 72 and the slide rail 74 forms a sliding pair, and the connection between the U-shaped fork 71 and the sliding shaft 72 forms a revolute pair. This belongs to the sliding linkage mechanism containing a sliding pair in the linkage mechanism. Although the attached figures do not show an embodiment of the crank-rocker mechanism, it fully meets the requirement of converting linear motion into rotational motion. The motion transmission path can be designed as follows: the piston rod of the linear cylinder 6 extends and retracts, causing the crank to rotate around a rotating joint, and the rocker arm swings around another rotating joint through the connecting rod, thereby driving the drive ring 5 to rotate synchronously.

[0041] In a preferred embodiment of this application, the wire spring hole crimping device further includes an elastic element that applies pressure to the crimping member 4, ensuring that the end of the crimping member 4 always abuts against the driving curved surface 51. In a preferred embodiment, such as Figure 5 and Figure 6 As shown, the elastic element can be a spring 8 sleeved on each pressing member 4. A boss is provided at the outer end of the pressing member 4, and a step is provided on the inner wall of the guide hole 212. The two ends of the spring 8 abut against the boss and the step, and the boss elastically abuts the outer end of the pressing member 4 against the driving curved surface 51. The setting of the elastic element ensures that the end of the pressing member 4 is tightly abutting against the driving curved surface 51 at all times, eliminating the gaps caused by manufacturing tolerances and wear. This brings two benefits: first, it realizes precise transmission without backlash, improving the control accuracy of pressing; second, it can provide a precise reset force after pressing, ensuring that the pressing member 4 can be withdrawn in a timely and reliable manner, preparing for the next working cycle.

[0042] As a preferred embodiment of this application, such as Figure 1As shown, the wire spring hole crimping device also includes a detection unit 9 and a finished product storage box 10. The detection unit 9 is used to detect whether the wire spring hole 3 in the axial positioning hole 211 has been removed. The finished product storage box 10 is used to collect the finished wire spring hole 3 after crimping. The addition of the detection unit 9 realizes the automation and intelligence of the crimping process. The detection unit 9 can prevent the handling module from accidentally putting in new materials without removing the finished product, avoiding the risk of material stacking and equipment collision, and improving the safety of the equipment. The finished product storage box 10 realizes the collection of finished products. For example, this device can be used with an automated robot. One robot can place the wire spring hole 3 to be crimped into the axial positioning hole 211 of the crimping fixture 2, and another robot can transfer the crimped finished product from the crimping fixture 2 to the finished product storage box 10, so that the equipment can operate continuously and unattended, further freeing up manpower and improving the overall production efficiency. The detection unit 9 can be a diffuse reflection photoelectric sensor, which emits infrared or visible light through the emitting end. When the light shines on the surface of the spring hole 3, part of the light is reflected back to the receiving end. The sensor determines whether there is material based on the intensity of the reflected light. Alternatively, a through-beam photoelectric sensor can be used, consisting of an emitting end and a receiving end. The emitting end emits light, and the receiving end receives the light. When there is a spring hole 3 in the axial positioning hole 211, the light is blocked, and the receiving end has no signal, thus determining that there is material. In addition, it can also be an inductive proximity sensor or other suitable structures.

[0043] The following is a brief description of the specific working process of this device: Material loading and positioning: The external automated handling robot vertically inserts the wire spring hole to be pressed into the axial positioning hole through the centering hole of the cover plate. The bottom of the wire spring hole fits against the support platform of the support component, and the axial positioning hole restricts the radial movement of the wire spring hole. After the detection unit detects the wire spring hole, it sends a pressable signal to the drive mechanism. Synchronous pressing: The drive mechanism starts, the piston rod of the linear cylinder extends, and drives the drive ring to rotate counterclockwise around the fixed disc by a preset angle through the sliding linkage mechanism. The drive surface of the inner wall of the drive ring synchronously presses the outer ends of the four pressing parts. The pressing parts move radially from the guide hole to the axial positioning hole. The pressing head of the pressing part gradually contacts the pressing point of the wire spring hole and applies pressure. Stroke limit: When the crimping part moves to the crimping position, the stop at its end abuts against the support platform, forcibly restricting the crimping part from continuing to move and avoiding over-pressure; Drive ring reset: After the crimping is completed, the piston rod of the linear cylinder retracts, driving the drive ring to rotate clockwise to reset; under the elastic force of the elastic element, the crimped part moves radially away from the axial positioning hole along the guide hole and returns to its initial position; Finished product inspection and removal: The handling robot takes the finished product and puts it into the finished product storage box. After the detection unit detects the wireless spring hole in the axial positioning hole, it sends a signal to the system that the feeding can continue and enters the next pressing cycle.

[0044] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0045] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0046] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A wire spring hole crimping device, characterized in that, include: Base; A crimping fixture is provided on the base and has an axial positioning hole for accommodating the wire spring hole; Multiple crimping members are arranged circumferentially around the axial positioning hole and are movable radially; A drive ring, rotatably disposed on the base and surrounding the crimping fixture; and A drive mechanism is used to drive the drive ring to rotate; The inner wall of the drive ring is provided with a drive surface that corresponds to and cooperates with each of the pressing parts. When the drive ring rotates, it drives all the pressing parts to move radially in sync through the drive surface, so as to perform a pressing action on the wire spring hole in the axial positioning hole.

2. The wire spring hole crimping device according to claim 1, characterized in that, The crimping fixture includes a fixed disc, which is fixed on the base. It has an axial positioning hole in the center and multiple guide holes in the circumference for accommodating the crimping component and allowing it to slide radially. The driving ring is sleeved on the outside of the fixed disc.

3. The wire spring hole crimping device according to claim 2, characterized in that, The crimping fixture also includes a cover plate, which is fixed to the top of the fixed disc and covers the drive ring to restrict the axial movement of the drive ring; the cover plate is provided with a centering hole coaxial with the axial positioning hole.

4. The wire spring hole crimping device according to claim 2, characterized in that, The crimping fixture also includes a support member, which is fixed to the bottom of the fixed disc and partially extends into the axial positioning hole to form a support platform for supporting the wire spring hole.

5. The wire spring hole crimping device according to claim 4, characterized in that, Each of the pressing members has a stop at its inner end; when the pressing member slides into the axial positioning hole to the pressing position, the stop abuts against the support platform to limit the maximum pressing stroke of the pressing member.

6. The wire spring hole crimping device according to claim 1, characterized in that, The driving surface is a surface with a continuously varying radius relative to the rotation center of the driving ring.

7. The wire spring hole crimping device according to claim 1, characterized in that, The drive mechanism is a linear cylinder, and the linear output of the linear cylinder is converted into the rotational motion of the drive ring through a motion conversion mechanism.

8. The wire spring hole crimping device according to claim 7, characterized in that, The motion conversion mechanism is a linkage mechanism or a crank-rocker mechanism.

9. The wire spring hole crimping device according to claim 1, characterized in that, It also includes an elastic element that applies pressure to the press-fit member so that the end of the press-fit member always abuts against the drive surface.

10. The wire spring hole crimping device according to claim 1, characterized in that, It also includes a detection unit and a finished product storage box; the detection unit is used to detect whether the spring hole in the axial positioning hole has been removed; the finished product storage box is used to collect the finished spring hole products after crimping.

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