A cylinder press-in type magnet mounting device for automobile gear shift lever production

Abstract

The present application relates to the technical field of automobile parts production, in particular to a cylinder press-in type magnet mounting device for automobile gear lever production, which comprises a rack, a carrier positioning table and a press-fitting cylinder, the carrier positioning table is symmetrically provided with inclined wedge blocks on both sides, the output end of the press-fitting cylinder is connected with a buffer tank, the locking claws hinged on both sides of the buffer tank are matched with the inclined wedge blocks to form a linkage clamping mechanism, the coaxial two-stage variable stiffness buffer springs in the tank form a progressive buffer system, the spherical head in the lower end guide sleeve is matched with the ball socket seat to form a floating centering press head, the guide sleeve and the press head enclose an air pressure cavity and are provided with a tangential chip removal air groove, the device synchronously converts the press-fitting axial stroke into lateral clamping force, has the functions of buffer and anti-breaking, automatic chip removal and floating centering, is a pure mechanical structure without additional electric control, can improve the press-fitting precision and assembly yield, and reduce the equipment complexity and operation and maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of automotive parts manufacturing technology, specifically to a cylinder press-fit magnet mounting device for automotive gear shift lever production. Background Technology

[0002] With the rapid development of the new energy vehicle industry, core components such as electronic gear shifters and actuators in electric vehicles and other motor vehicles have placed extremely high demands on the precision and efficiency of automated assembly. Automated pressing of magnets has been widely used on the production lines of these components. Existing automatic magnet pressing machines typically include an automatic feeding unit, a transfer mechanism, a positioning fixture, and a cylinder-driven pressing actuator. In the existing pressing process, due to the characteristics of magnets being small, brittle, and possessing their own magnetic force, magnets are prone to secondary jamming and attitude deflection during the process of being transported from the feeding unit to the positioning fixture due to magnetic attraction of debris or mutual attraction.

[0003] To address the aforementioned issues of unstable material feeding and pressing positioning, current industry solutions typically involve adding an electrically controlled electromagnetic cancellation module to the pressing head or positioning fixture, or installing a multi-station optical sensor array at the pressing station. This allows for forced fine-tuning using multi-segment electric cylinders controlled by high-frequency signal feedback. However, these existing solutions still have significant drawbacks: in the high-paced production environment of electric vehicle and other automotive parts, the frequent introduction of electromagnetic cancellation modules or optical sensor arrays significantly increases the electrical complexity and equipment maintenance costs of the entire machine. Relying on complex circuit fine-tuning control makes it difficult to eliminate accumulated gaps in mechanical transmission, and high-frequency forced pressing can easily lead to edge damage to brittle magnets or inconsistent pressing depths, making it difficult to balance assembly yield and production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a cylinder press-fit magnet mounting device for automobile gear shift lever production, so as to solve the problem of insufficient assembly accuracy.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A cylinder-pressed magnet mounting device for automobile gear shift lever production includes a frame. A carrier positioning platform is provided on one side of the frame. Inclined wedges are symmetrically arranged on both sides of the carrier positioning platform. A pressing cylinder is positioned on the upper side of the frame corresponding to the carrier positioning platform. A buffer box is provided on the side of the pressing cylinder opposite to the carrier positioning platform. A pressure plate is slidably mounted on the lower end of the buffer box. A drive rod is slidably mounted inside the buffer box. The drive rod is fixedly connected to the output end of the pressing cylinder, and its lower end extends through the pressure plate and out of the buffer box. A buffer spring is provided inside the buffer box. The two ends of the buffer spring act on the pressure plate and the inner sidewall of the upper end of the buffer box, respectively. Locking claws are hinged to both sides of the buffer box. The locking claws are connected to the inclined... The wedge blocks are positioned correspondingly. When the pressing cylinder moves downward, the locking claw slides along the inclined surface of the wedge block and retracts inward to clamp the workpiece. A guide sleeve is provided on the side of the pressure plate opposite to the buffer box. A guide inclined surface is provided on the inner wall of the lower end of the guide sleeve, and a chip discharge groove penetrating the inner and outer walls is opened on the side wall of the guide sleeve. A spherical head is provided inside the guide sleeve. The spherical head is fixedly connected to the drive rod. A ball socket is provided at the lower end of the spherical head. The ball socket slides with the spherical head. A limit pressure ring is provided on the side of the ball socket opposite to the spherical head. A compression spring is provided inside the guide sleeve. The two ends of the compression spring act on the lower side of the pressure plate and the upper side of the ball socket, respectively. A pressure head is provided on the side of the ball socket opposite to the spherical head.

[0006] By symmetrically arranging inclined wedges on both sides of the positioning platform and hinged locking claws corresponding to the positions of the inclined wedges on both sides of the buffer box, the locking claws can slide along the inclined surface of the inclined wedges and retract inward as the buffer box descends with the pressing cylinder. This allows for simultaneous lateral clamping and positioning of the workpiece at the pressing station. The positioning action and the pressing stroke are fully linked, eliminating the need for additional drive components. This simplifies the overall machine structure, ensures consistency between the positioning cycle and the pressing cycle, and improves production efficiency. A drive rod fixedly connected to the output end of the pressing cylinder is installed inside the buffer box, and a sliding assembly is mounted on the lower end of the buffer box. The pressure plate, along with buffer springs acting on the inner walls of the pressure plate and buffer box respectively, creates a flexible and buffered pressing stroke. This effectively absorbs the instantaneous impact load from the cylinder's downward pressure, ensuring a smooth pressing force and preventing the pressure head from rapidly contacting the brittle magnet, which could cause edge chipping or internal damage. This improves the stability of the pressing process. A guide sleeve with a guide slope on the lower inner wall of the pressure plate is installed on the underside of the pressure plate. This allows for pre-guiding and centering of the magnet or workpiece during the initial pressing stage, automatically correcting any posture deviations and positional offsets before pressing, ensuring the coaxiality of the magnet and the mounting hole. Simultaneously, a through-hole is formed on the side wall of the guide sleeve. During the downward pressing process, the internal space of the guide sleeve is continuously compressed by the chip removal air channel on the outer wall, forming a directional airflow that flows out from the chip removal air channel. This blows away tiny impurities such as iron filings attracted by the magnet surface, eliminating the interference of debris on pressing accuracy and assembly fit. The guide sleeve is equipped with a spherical head fixedly connected to the drive rod and a ball socket that slides with the spherical head. Combined with the compression springs acting on the lower side of the pressure plate and the upper side of the ball socket, as well as the stroke constraint of the limiting pressure ring, the ball socket connected to the lower end of the pressure head has a multi-directional adaptive floating self-aligning capability, which can actively counteract the slight tilt angle of the workpiece mounting surface. The device minimizes machining errors and cumulative assembly deviations of components, ensuring a uniform and comprehensive fit between the pressure head end face and the magnet surface. This guarantees consistent pressing depth and uniform circumferential force on the magnet, preventing magnet breakage and misalignment caused by uneven pressure. The compression spring also provides additional flexible pressing force to further mitigate pressing impact. The entire device achieves multiple functions simultaneously through a purely mechanical structure, including linkage positioning, pressing buffer, automatic chip removal, and floating self-alignment. It eliminates the need for additional electronic control sensors and drive components, effectively reducing the electrical complexity and maintenance costs of the equipment, and significantly improving the assembly accuracy and production yield of automotive gear shift lever magnet pressing.

[0007] Preferably, a pneumatic cavity is formed between the inner wall of the guide sleeve and the outer wall of the pressure head, the upper end of the chip removal duct is connected to the pneumatic cavity, and the outlet end of the chip removal duct extends downward at an angle along the tangent direction of the guide sleeve.

[0008] By constructing a pneumatic chamber between the inner wall of the guide sleeve and the outer wall of the pressure head, and connecting the upper end of the chip removal air channel to the pneumatic chamber with the outlet end extending downwards along the tangential direction of the guide sleeve, when the pressing operation is completed and the pressure head retracts upwards with the drive rod, the pressure head retracts inwards relative to the guide sleeve. The internal volume of the pneumatic chamber is continuously compressed, and the air inside the chamber is compressed to form a positive pressure airflow, which is then directionally discharged along the chip removal air channel. At this time, the pressure head and the magnet surface gradually separate to form a purging gap. The downwardly inclined outlet structure allows the discharged airflow to form a downward-swirling purging air curtain, which can achieve full coverage. The airflow covers the area around the magnet surface and the workpiece mounting hole, effectively removing tiny impurities such as iron filings attracted by magnetic force. It also avoids the problem of debris splashing and rebounding caused by direct airflow, allowing debris to be carried away from the pressing surface along the inclined airflow direction. This prevents debris residue from affecting the assembly accuracy and fit of subsequent pressing. At the same time, this structure does not require an external air source or electrical control components. It relies entirely on the mechanical compression of the pressing return stroke to automatically generate the blowing airflow. The chip removal action is completely synchronized with the pressing retraction process. The structure is simple and responsive, simplifying the overall machine configuration while ensuring the cleanliness of the pressing surface.

[0009] Preferably, the locking pawl has an arc surface on the side opposite to the buffer box, and the arc surface slides in cooperation with the inclined wedge block. The locking pawl has a clamping block on the side opposite to the vehicle positioning table, and the clamping block matches the edge of the vehicle positioning table.

[0010] By setting an arc surface on the side of the locking pawl opposite to the buffer box and making it slide in contact with the inclined wedge, and simultaneously setting a clamping block on the side of the locking pawl facing the carrier positioning table that matches the edge contour of the carrier positioning table, the arc surface of the locking pawl can smoothly slide along the inclined surface of the inclined wedge as the buffer box descends with the pressing cylinder. This effectively reduces the frictional resistance during the sliding contact, preventing jamming and jerking during the descent of the mechanism. The contact form of the arc surface can also adapt to the angle change of the inclined surface, making the contact force of the mating surface more uniform, reducing the wear and tear of the mating parts between the inclined surface and the locking pawl, and improving the service life and long-term operational stability of the mechanism. The clamping block that matches the edge of the carrier positioning table can prevent the locking pawl from sliding under the drive of the inclined surface. When clamping inwards, the machine fully conforms to and presses the side edge of the workpiece through surface contact. This effectively increases the pressing contact area, reduces the compressive stress per unit area, and prevents the edges of thin-walled or plastic shift lever workpieces from being crushed and deformed. It also constrains the lateral freedom of the workpiece through precise contour matching, ensuring the centering accuracy of the workpiece positioning and preventing the workpiece from shifting or deviating during the pressing process. With the pure mechanical linkage structure of the inclined wedge block, the positioning and clamping action is completely synchronized with the downward stroke of the pressing process. The clamping force increases steadily with the downward stroke, eliminating the need for additional drive and control components. While simplifying the overall structure, this effectively ensures the reliability of workpiece positioning and the positional accuracy of the magnetic pressing, making it suitable for the pressing production needs of precision parts such as automotive shift levers.

[0011] Preferably, the buffer spring includes a first buffer spring and a second buffer spring coaxially sleeved on the outer periphery of the drive rod, wherein the elastic coefficient of the first buffer spring is greater than that of the second buffer spring, and the natural length of the second buffer spring is greater than that of the first buffer spring.

[0012] By setting the buffer springs as a first buffer spring and a second buffer spring coaxially sleeved around the outer periphery of the drive rod, and making the elastic coefficient of the first buffer spring greater than that of the second buffer spring, and the natural length of the second buffer spring greater than that of the first buffer spring, a two-stage progressive buffer structure is constructed. In the initial stage when the pressing cylinder drives the drive rod downward, the second buffer spring, with its longer natural length, is compressed first. Its smaller elastic coefficient provides a gentle initial buffer force, effectively absorbing the instantaneous impact when the cylinder starts moving downward. This allows the pressure plate and the lower pressing structure to contact the magnet and workpiece surface at a gradual speed, preventing the brittle magnet from chipping at the edges or internal damage due to instantaneous hard contact. As the pressing stroke continues, the first buffer spring, with its shorter natural length, begins to... Entering the compression state, the greater elastic coefficient provides higher buffer stiffness and load-bearing capacity, bearing the working load in the later stage of pressing, limiting excessive compression of the buffer stroke, and ensuring precise control of the final pressing depth. At the same time, the coaxial arrangement of the two springs is compact and regular, which can make the drive rod circumferentially force even, avoiding sliding jamming and component wear caused by uneven load, effectively improving the operational stability and service life of the buffer mechanism. The graded buffer not only solves the contradiction of excessive rigidity and large impact in the initial stage of a single spring and insufficient rigidity in the final stage, but also adapts to the force requirements of different stages of the pressing process. While fully mitigating the impact, it ensures the accuracy of pressing in place, which is well adapted to the pressing process requirements of brittle and precision parts such as automotive shift lever magnets.

[0013] Preferably, a reset torsion spring is sleeved on the hinge shaft between the locking pawl and the buffer box, with one end of the reset torsion spring engaged with the side wall of the buffer box and the other end engaged with the inner side wall of the locking pawl.

[0014] By fitting a return torsion spring onto the hinge shaft between the locking pawl and the buffer box, and securing both ends of the spring to the side wall of the buffer box and the inner wall of the locking pawl respectively, a stable elastic return force and continuous pre-tightening constraint are provided for the locking pawl. During the clamping process, as the pressing cylinder drives the buffer box downwards, the return torsion spring applies a continuous outward tension torque to the locking pawl, effectively counteracting the attitude deviation caused by the locking pawl's own weight. This ensures that the outer arc surface of the locking pawl remains tightly fitted to the inclined surface of the inclined wedge, eliminating hinge gaps and mechanism backlash. This prevents the locking pawl from shaking, shifting, or detaching from the inclined surface during sliding, ensuring a smooth and stable sliding and retraction action along the inclined surface. The clamping force increases steadily with the downward stroke, significantly improving the response speed and positional accuracy of the positioning clamping. When the pressing operation is completed, the clamping... When the cylinder drives the buffer box to move upwards and back, the locking pawl gradually disengages from the constraint of the inclined wedge. At this time, the reset torsion spring releases its elastic potential energy, driving the locking pawl to automatically open and reset outwards, promptly releasing the lateral pressure on the workpiece. No additional reset drive element is required, which simplifies the overall structure and ensures that the locking pawl returns to its initial open state after each pressing cycle, leaving sufficient operating space for workpiece loading and unloading, and preventing the locking pawl from interfering with workpiece handling. At the same time, the constraint of the torsion spring can also prevent collision noise and component wear caused by the free swing of the locking pawl during the return stroke, effectively reducing the operating noise of the mechanism and extending the service life of the hinge and mating surfaces. Combined with the pure mechanical linkage structure of the inclined wedge, the operational reliability and consistency of the entire positioning and clamping mechanism are further improved.

[0015] Preferably, the inclined wedge block has a limit stop at the bottom of its inclined surface. When the buffer box moves down to the pressing station, the inner wall of the locking claw abuts against the limit stop, and the pressing block presses against the edge of the workpiece on the carrier positioning table.

[0016] By setting a limiting stop at the bottom of the inclined wedge, the inner wall of the locking pawl precisely abuts against the limiting stop when the buffer box descends to the pressing station. Simultaneously, the clamping block presses against the edge of the workpiece on the carrier positioning table. This purely mechanical hard limiting method sets a precise endpoint for the retraction stroke of the locking pawl, effectively limiting the inward retraction range of the locking pawl and preventing excessive clamping stroke that could cause workpiece deformation. It is suitable for the protection requirements of plastic or thin-walled shift lever workpieces. At the same time, it ensures that the clamping position and stroke of the locking pawl are completely consistent in each pressing cycle, eliminating positioning errors caused by hinge gaps and sliding wear, and significantly improving the repeatability accuracy of workpiece positioning and clamping. This structure achieves precise synchronization between the clamping action and the pressing station. When the buffer box reaches the pressing position, the clamping block reliably clamps the edge of the workpiece, preventing timing misalignment where pressing has started but the workpiece is not yet clamped, and avoiding wasted work cycle due to excessive clamping lead. This ensures the timing match between the positioning and pressing actions. During the pressing process, the limit stop provides rigid support to the locking claw from the side, bearing the lateral load from the pressing reaction force. This effectively prevents the locking claw from opening outwards and becoming displaced due to the reverse pushing force, significantly enhancing the structural rigidity and stability of the clamped state. It also prevents the workpiece from shifting laterally under pressing force. Furthermore, the entire limit structure does not require additional electrical control detection elements and feedback control, making it simple, reliable, and with a low failure rate.

[0017] Preferably, a rigid buffer pad is provided on the side of the limiting stop that abuts against the locking pawl, and a positioning protrusion is provided on the outer side wall of the locking pawl. When the locking pawl abuts against the limiting stop, the positioning protrusion is embedded in the corresponding slot of the rigid buffer pad.

[0018] By setting a rigid buffer pad on the side where the limiting stop and the locking pawl abut, and setting a corresponding positioning protrusion on the outer wall of the locking pawl, the positioning protrusion is precisely embedded in the corresponding slot of the rigid buffer pad when the locking pawl abuts against the limiting stop. This further optimizes the buffering performance and positioning accuracy of the limiting contact based on pure mechanical hard limiting. The rigid buffer pad can effectively absorb the instantaneous impact generated by the hard contact between the locking pawl and the limiting stop when the locking pawl retracts to the end point as it descends with the buffer box, avoiding abnormal noise and damage to the mating surfaces caused by metal rigid collision. At the same time, it has sufficient structural rigidity to prevent the locking pawl from shifting its clamping position due to buffer deformation, ensuring the positional accuracy of the clamping end point. The fitting of the positioning protrusion and the slot is also optimized. The locking mechanism creates a dual lateral and circumferential engagement constraint after the locking jaws are in position. This precisely limits the final retraction position of the locking jaws, effectively eliminating positioning errors caused by hinge gaps and sliding wear, and significantly improving the repeatability of workpiece clamping. Furthermore, during the pressing process, the interlocking structure can absorb the lateral load from the pressing reaction force, preventing the locking jaws from slipping outward or shifting out of position due to the push-back action. This significantly enhances the structural stability and load-bearing capacity of the clamped state, preventing lateral displacement of the workpiece under pressing force. At the same time, the interlocking positioning structure ensures that the clamping posture of the locking jaws is completely consistent in each pressing cycle, effectively improving the consistency and reliability of workpiece positioning in high-cycle automated production.

[0019] Preferably, the clamping block is provided with an anti-slip buffer pad on the side opposite to the carrier positioning platform. The anti-slip buffer pad is striped and made of rubber.

[0020] By installing a striped anti-slip buffer pad made of rubber on the side of the clamping block opposite to the carrier positioning table, multiple functions are combined during the workpiece clamping process, including flexible protection, anti-slip positioning, and tolerance adaptation. The rubber material itself has good elastic deformation capability, providing flexible cushioning when the clamping block retracts with the locking claws to clamp the workpiece, avoiding direct hard contact between the metal clamping block and the shift lever workpiece. This effectively prevents the workpiece surface from being crushed, scratched, or indented, and is especially suitable for precision parts such as automotive shift levers with plastic housings or thin-walled structures. Simultaneously, the rubber pad can compensate for minor dimensional tolerances and surface flatness deviations of the workpiece through its own micro-deformation, ensuring that the clamping force is evenly distributed on the workpiece contact surface, avoiding localized stress concentration that could lead to workpiece deformation. This ensures consistent clamping effect with each clamping action, improving positioning stability in mass production. The structural design significantly increases the static friction between the buffer pad and the workpiece surface, effectively improving the anti-slip performance after clamping and preventing the workpiece from shifting laterally or deviating during press-fitting, thus ensuring the accuracy and stability of press-fitting positioning. On the other hand, the grooves between the stripes provide space for tiny debris and oil stains on the contact surface, preventing impurities from getting stuck between the contact surfaces and affecting the clamping fit and positioning accuracy. In addition, the rubber buffer pad can absorb the vibration and impact transmitted to the clamping part during press-fitting, reducing the collision noise of the mechanism, reducing the wear of the mating surfaces of the clamping blocks, and extending the service life of the components. At the same time, in conjunction with the linkage clamping structure driven by the inclined wedge block, it ensures both clamping rigidity and positioning accuracy while also protecting the workpiece surface, effectively improving the operational reliability and workpiece clamping yield of the entire positioning and clamping mechanism.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention utilizes symmetrically arranged inclined wedges on both sides of the positioning platform of the carrier, combined with locking claws hinged on both sides of the buffer box, to form a purely mechanical linkage positioning structure. This transforms the axial downward driving force of the pressing cylinder into a lateral clamping force, ensuring that the positioning and clamping action is completely synchronized with the pressing stroke. No additional driving components are required. Simultaneously, a progressive pressing buffer system is constructed through two-stage variable stiffness buffer springs coaxially nested within the buffer box. Combined with a floating self-aligning pressure head composed of a spherical head and a ball socket seat, it can adaptively offset the tilt angle of the workpiece mounting surface and machining errors. While simplifying the overall structure, it effectively absorbs pressing impact, ensures uniform pressing force, avoids the breakage and skewing of brittle magnets, and significantly improves pressing accuracy and assembly yield.

[0022] 2. This invention forms a pneumatic chamber by enclosing the inner wall of the guide sleeve and the outer wall of the pressure head. Combined with the chip removal air grooves that extend downwards along the tangential direction of the side wall, a purely mechanically self-driven synchronous chip removal system is constructed. It relies entirely on the volume compression during the press-fit return stroke to generate positive pressure airflow, without the need for external air sources and electrical control components. The tangentially inclined outlet structure can form a downward blowing air curtain, which covers the surface of the magnet and the area around the mounting hole in all directions during the process of the pressure head separating from the workpiece. This effectively blows away the iron filings and impurities attracted by the magnetic force, while avoiding chip splashing and rebound. It also eliminates the interference of chip residue on the fit and assembly accuracy of the next press-fit. The structure is simple and the action response is highly synchronized with the press-fit process.

[0023] 3. This invention features a limiting stop with a rigid buffer pad at the bottom of the inclined wedge block, which, together with the positioning protrusion on the outside of the locking claw, forms an interlocking hard limiting structure. This precisely limits the clamping endpoint position, eliminates positioning errors caused by hinge gaps and wear, and simultaneously bears the lateral reaction force of the press-fitting process to prevent the locking claw from loosening. The reset torsion spring at the hinge ensures smooth reset of the opening and closing action. The working surface of the pressing block is equipped with a striped rubber anti-slip buffer pad, which has the functions of anti-slip, flexible protection, and tolerance compensation. This can prevent workpiece damage and deformation, comprehensively improve the repeatability accuracy, operational stability, and workpiece protection effect of clamping and positioning, and is suitable for high-cycle automated press-fitting production needs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the cylinder press-fit magnet mounting device for automobile gear shift lever production according to the present invention. Figure 2 This is a left view of the press-fit cylinder and buffer box of the present invention; Figure 3 for Figure 2 Cross-sectional view of AA in the middle; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 This is a schematic diagram of the locking claw structure of the present invention; Figure 6 This is a schematic diagram of the structure of the frame, inclined wedge block, and carrier positioning platform of the present invention; Figure 7 for Figure 6 A magnified view of point C in the middle.

[0025] In the diagram: 1. Frame; 101. Carrier positioning platform; 102. Inclined wedge block; 103. Pressing cylinder; 104. Limiting stop; 105. Rigid buffer pad; 2. Buffer box; 201. Pressure plate; 202. Drive rod; 203. First buffer spring; 204. Second buffer spring; 3. Locking claw; 301. Arc surface; 302. Pressing block; 303. Reset torsion spring; 304. Positioning cam; 305. Anti-slip buffer pad; 4. Guide sleeve; 401. Guide inclined surface; 402. Chip discharge duct; 403. Spherical head; 404. Ball socket seat; 405. Limiting pressure ring; 406. Compression spring; 407. Pressure head; 408. Air pressure chamber. Detailed Implementation

[0026] Please see Figures 1 to 7 This invention provides a cylinder press-fit magnet mounting device for automobile gear shift lever production, the technical solution of which is as follows: A cylinder-pressed magnet mounting device for automobile gear shift lever production includes a frame 1. A carrier positioning platform 101 is provided on one side of the frame 1. Inclined wedges 102 are symmetrically arranged on both sides of the carrier positioning platform 101. A pressing cylinder 103 is provided on the upper side of the frame 1 corresponding to the carrier positioning platform 101. A buffer box 2 is provided on the side of the pressing cylinder 103 opposite to the carrier positioning platform 101. A pressure plate 201 is slidably arranged at the lower end of the buffer box 2. A drive rod 202 is slidably arranged inside the buffer box 2. The drive rod 202 is fixedly connected to the output end of the pressing cylinder 103, and the lower end of the drive rod 202 extends out of the buffer box 2 through the pressure plate 201. A buffer spring is provided inside the buffer box 2. The two ends of the buffer spring act on the inner side of the pressure plate 201 and the upper end of the buffer box 2, respectively. The buffer spring includes a first buffer spring 203 and a second buffer spring 204 coaxially sleeved on the outer periphery of the drive rod 202. The elastic coefficient of the first buffer spring 203 is greater than that of the second buffer spring 204, and the natural length of the second buffer spring 204 is greater than that of the first buffer spring 203. The stiffness coefficient of the first buffer spring 203 is K1=80N / mm, the stiffness coefficient of the second buffer spring 204 is K2=30N / mm, the natural length of the first buffer spring 203 is L1=30mm, and the natural length of the second buffer spring 204 is L2=45mm. Locking claws 3 are hinged to both sides of the buffer box 2. A return torsion spring 303 is sleeved on the hinge axis between the locking claw 3 and the buffer box 2. One end of the return torsion spring 303 is locked. One end is attached to the side wall of the buffer box 2, and the other end is snapped into the inner side wall of the locking pawl 3. The locking pawl 3 corresponds to the position of the inclined wedge block 102. The side of the locking pawl 3 opposite to the buffer box 2 is provided with an arc surface 301, which slides in cooperation with the inclined wedge block 102. The side of the locking pawl 3 opposite to the carrier positioning table 101 is provided with a clamping block 302, which matches the edge of the carrier positioning table 101. The side of the clamping block 302 opposite to the carrier positioning table is provided with an anti-slip buffer pad 305, which is striped and made of rubber. When the pressing cylinder 103 moves downward, the locking pawl 3 slides along the inclined surface of the inclined wedge block 102 and retracts inward to clamp the workpiece. The bottom end of the inclined surface of the inclined wedge block 102 is provided with a limit stop 104. When the buffer box 2 descends to the pressing station, the inner wall of the locking claw 3 abuts against the limiting stop 104, and the pressing block 302 simultaneously presses against the edge of the workpiece on the positioning table 101 of the carrier. A rigid buffer pad 105 is provided on the side of the limiting stop 104 that abuts against the locking claw 3, and a positioning protrusion 304 is provided on the outer wall of the locking claw 3. When the locking claw 3 abuts against the limiting stop 104, the positioning protrusion 304 is embedded in the corresponding slot of the rigid buffer pad 105. A guide sleeve 4 is provided on the side of the pressure plate 201 that is opposite to the buffer box 2. A guide slope 401 is provided on the inner wall of the lower end of the guide sleeve 4, and a chip discharge air groove 402 that penetrates the inner and outer walls is opened on the side wall of the guide sleeve 4. An air pressure chamber 408 is formed between the inner wall of the guide sleeve 4 and the outer wall of the pressure head 407.The upper end of the chip removal duct 402 is connected to the air pressure chamber 408. The outlet end of the chip removal duct 402 extends downward at an angle along the tangent of the guide sleeve. The cross-section of the chip removal duct 402 is rectangular, with a width of 2mm and a height of 3mm. There are 6 ducts, which are evenly distributed around the circumference of the guide sleeve. The airflow outlet velocity is about 15m / s, which can effectively blow away iron filings and dust impurities with a particle size of 0.5mm. A spherical head 403 is provided inside the guide sleeve 4. The spherical head 403 is fixedly connected to the drive rod 202. A ball socket seat 404 is provided at the lower end of the spherical head 403. The ball socket seat 404 slides with the spherical head 403. A limit ring 405 is provided on the side of the ball socket seat 404 opposite to the spherical head 403. A compression spring 406 is provided inside the guide sleeve 4. The two ends of the cylinder 103 act on the lower side of the pressure plate 201 and the upper side of the ball socket 404, respectively. A pressure head 407 is located on the side of the ball socket 404 opposite to the spherical head 403. The output end of the pressing cylinder 103 extends downward, driving the drive rod 202 and the buffer box 2 to move axially downwards as a whole. During the first 10mm of downward movement of the buffer box 2, the outer arc surface 301 of the locking pawl 3 contacts and slides against the inclined surface of the wedge block 102. The locking pawl 3 retracts and swings inwards around the hinge axis, driving the clamping block 302 to gradually adhere to and press the side edge of the workpiece. Afterwards, the buffer box 2 continues to move downwards by 5mm, and the lower end face of the pressure head 407 contacts the upper surface of the magnet and begins the pressing action. That is, the clamping action is completed before the pressing action, ensuring that the workpiece is in a fully positioned and clamped state before being subjected to pressing force.

[0027] Working principle: Please refer to Figures 1 to 7 When performing the pressing operation of the car shift lever magnet, the pressing cylinder 103 is in the retracted upper position in the initial state, the buffer box 2 is raised synchronously with the drive rod 202, and the locking claws 3 on both sides are kept in the outward opening state under the tension torque of the hinge shaft reset torsion spring 303. The first buffer spring 203 and the second buffer spring 204 in the buffer box 2 are in the naturally extended state, and the compression spring 406 in the guide sleeve 4 pushes the ball socket 404 downward, driving the pressing head 407 to the lower limit. The shift lever workpiece to be assembled is placed on the carrier positioning table 101 to complete the initial positioning, and the magnet is pre-positioned above the workpiece mounting hole.

[0028] When the pressing action is performed, the output end of the pressing cylinder 103 extends downward, driving the drive rod 202 and the buffer box 2 to move downward along the axial direction. The locking claws 3 hinged on both sides of the buffer box 2 move downward accordingly. The arc surface 301 on the outer side of the locking claw 3 contacts and slides with the inclined surface of the inclined wedge block 102 symmetrically arranged on both sides of the carrier positioning table 101. With the help of the lateral component force of the inclined surface, the torque of the reset torsion spring 303 is overcome, causing the locking claw 3 to swing inward around the hinge axis. This drives the end clamping block 302 to gradually contact and clamp the side edge of the workpiece, converting the axial driving force of the pressing cylinder 103 into a lateral clamping force, realizing the synchronous linkage between the positioning and clamping action and the pressing stroke. When the buffer... When the box 2 descends to the pressing station, the inner wall of the locking claw 3 abuts against the limiting stop 104 at the bottom of the inclined wedge block 102. The positioning protrusion 304 on the outer side of the locking claw 3 is embedded in the corresponding groove of the rigid buffer pad 105 on the side of the limiting stop 104, forming a rigid limiting and fitting positioning. This not only accurately limits the clamping stroke to avoid workpiece deformation under pressure, but also bears the pressing reaction force to prevent the locking claw 3 from loosening outward, ensuring a stable and reliable clamping state. The striped rubber anti-slip buffer pad 305 on the surface of the pressing block 302 compensates for workpiece size deviation through elastic deformation, increases friction to prevent workpiece movement, and avoids workpiece surface damage. The buffer box 2 continues to descend and advance for pressing, and the pressure plate 2... 01 moves down synchronously with the guide sleeve 4. The guide slope 401 on the inner wall of the lower end of the guide sleeve 4 first contacts the outer periphery of the magnet, pre-guiding and centering the magnet, automatically correcting the magnet's attitude deviation and positional deviation. Then, the lower end face of the pressure head 407 fits against the upper surface of the magnet and moves down synchronously with the drive rod 202 to complete the magnet pressing. During the pressing process, the spherical head 403 fixed at the lower end of the drive rod 202 and the ball socket 404 form a spherical sliding pair. With the elastic support of the compression spring 406 and the stroke constraint of the limiting pressure ring 405, the ball socket 404 connected to the lower end of the pressure head 407 has a multi-directional adaptive floating self-aligning capability, which can actively compensate for the small tilt angle of the workpiece mounting surface and zero. The machining errors of the components and the cumulative deviations in assembly ensure that the end face of the pressure head 407 is fully and evenly attached to the surface of the magnet, ensuring consistent pressing depth and uniform force on the circumferential direction of the magnet. The two-stage buffer springs in the buffer box 2 participate in compression in sequence. In the initial stage, the second buffer spring 204, which has a longer natural length and a smaller elastic coefficient, is compressed first, providing a gentle initial buffer force to absorb the instantaneous impact of the cylinder pressing down and prevent the brittle magnet from cracking due to hard contact. As the stroke progresses, the first buffer spring 203, which has a shorter natural length and a larger elastic coefficient, engages in compression, improving the overall stiffness of the buffer system, limiting excessive compression of the buffer stroke, and ensuring the precise control of the final pressing depth.

[0029] When the pressing operation is completed and the pressing cylinder 103 drives the drive rod 202 and the buffer box 2 to move upward and retract, the drive rod 202 first drives the spherical head 403, the ball socket 404 and the pressing head 407 to rise synchronously. The pressing head 407 retracts inward relative to the guide sleeve 4, compressing the internal volume of the air pressure chamber 408, so that the air in the chamber is compressed to form a positive pressure airflow. It flows in from the inlet of the chip discharge air channel 402 and blows out from the outlet inclined downward in the tangential direction, forming a downward blowing air curtain. At this time, the pressing head 407 gradually separates from the surface of the magnet. The airflow can fully act on the magnet surface and the periphery of the workpiece mounting hole to effectively remove iron filings and impurities attracted by magnetic force, avoiding the impact of residual debris on the assembly and fitting accuracy of the next pressing. Subsequently, the locking claw 3 gradually disengages from the constraint of the inclined wedge block 102, and the reset torsion spring 303 releases elastic potential energy, driving the locking claw 3 to swing outward around the hinge axis to reset and open, timely releasing the lateral pressure on the workpiece. The compression spring 406 pushes the ball socket 404 and the pressure head 407 to reset to the initial extended state, completing a single pressing cycle.

[0030] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A cylinder press-fit magnet mounting device for automobile gear shift lever production, comprising a frame (1), wherein a carrier positioning platform (101) is provided on one side of the frame (1), characterized in that, The vehicle positioning platform (101) is symmetrically provided with inclined wedges (102) on both sides. A press-fit cylinder (103) is provided on the upper side of the frame (1) corresponding to the position of the vehicle positioning platform (101). A buffer box (2) is provided on the side of the press-fit cylinder (103) opposite to the vehicle positioning platform (101). A pressure plate (201) is slidably provided at the lower end of the buffer box (2). A drive rod (202) is slidably provided inside the buffer box (2). The drive rod (202) and the press-fit cylinder (103) are connected. The output end of the drive rod (202) is fixedly connected, and the lower end of the drive rod (202) extends through the pressure plate (201) and out of the buffer box (2). A buffer spring is provided inside the buffer box (2). The two ends of the buffer spring act on the inner sidewall of the pressure plate (201) and the upper end of the buffer box (2), respectively. Locking claws (3) are hinged on both sides of the buffer box (2). The locking claws (3) correspond to the positions of the inclined wedge block (102). When the press cylinder (103) moves downward, the locking claws (3) move along the inclined wedge block. The inclined surface of (102) slides and retracts inward to clamp the workpiece. The pressure plate (201) is provided with a guide sleeve (4) on the side opposite to the buffer box (2). The lower inner wall of the guide sleeve (4) is provided with a guide inclined surface (401), and the side wall of the guide sleeve (4) is provided with a chip discharge groove (402) that penetrates the inner and outer walls. A spherical head (403) is provided inside the guide sleeve (4). The spherical head (403) is fixedly connected to the drive rod (202). The lower end is provided with a ball socket seat (404), which is slidably engaged with the spherical head (403). A limit ring (405) is provided on the side of the ball socket seat (404) opposite to the spherical head (403). A compression spring (406) is provided inside the guide sleeve (4). The two ends of the compression spring (406) act on the lower side of the pressure plate (201) and the upper side of the ball socket seat (404) respectively. A pressure head (407) is provided on the side of the ball socket seat (404) opposite to the spherical head (403).

2. The cylinder press-fit magnet mounting device for automobile gear shift lever production according to claim 1, characterized in that, A pneumatic cavity (408) is formed between the inner wall of the guide sleeve (4) and the outer wall of the pressure head (407). The upper end of the chip removal duct (402) is connected to the pneumatic cavity (408), and the outlet end of the chip removal duct (402) extends downward at an inclination along the tangent direction of the guide sleeve.

3. The cylinder press-fit magnet mounting device for automobile gear shift lever production according to claim 1, characterized in that, The locking claw (3) has an arc surface (301) on the side opposite to the buffer box (2), and the arc surface (301) slides in cooperation with the inclined wedge (102). The locking claw (3) has a clamping block (302) on the side opposite to the vehicle positioning table (101), and the clamping block (302) matches the edge of the vehicle positioning table (101).

4. A cylinder press-fit magnet mounting device for automobile gear shift lever production according to claim 1, characterized in that, The buffer spring includes a first buffer spring (203) and a second buffer spring (204) coaxially sleeved on the outer periphery of the drive rod (202). The elastic coefficient of the first buffer spring (203) is greater than that of the second buffer spring (204), and the natural length of the second buffer spring (204) is greater than that of the first buffer spring (203).

5. A cylinder press-fit magnet mounting device for automobile gear shift lever production according to claim 1, characterized in that, A reset torsion spring (303) is sleeved on the hinge shaft between the locking claw (3) and the buffer box (2). One end of the reset torsion spring (303) is engaged with the side wall of the buffer box (2), and the other end is engaged with the inner side wall of the locking claw (3).

6. A cylinder press-fit magnet mounting device for automobile gear shift lever production according to claim 3, characterized in that, The inclined wedge (102) has a limit stop (104) at the bottom of the inclined surface. When the buffer box (2) moves down to the press-fitting station, the inner wall of the locking claw (3) abuts against the limit stop (104), and the pressing block (302) presses against the workpiece edge of the carrier positioning table (101) at the same time.

7. A cylinder press-fit magnet mounting device for automobile gear shift lever production according to claim 6, characterized in that, A rigid buffer pad (105) is provided on the side of the limiting stop (104) that abuts against the locking claw (3). A positioning protrusion (304) is provided on the outer side wall of the locking claw (3). When the locking claw (3) abuts against the limiting stop (104), the positioning protrusion (304) is embedded in the corresponding slot of the rigid buffer pad (105).

8. A cylinder press-fit magnet mounting device for automobile gear shift lever production according to claim 3, characterized in that, The clamping block (302) is provided with an anti-slip buffer pad (305) on the side opposite to the vehicle positioning platform. The anti-slip buffer pad (305) is striped and made of rubber.

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