Pre-set self-sensing cavity tensioner multi-axis numerical control servo press

Abstract

The application discloses a preset self-sensing cavity tensioner multi-axis numerical control servo press, and belongs to the technical field of presses. A first pressure die is arranged at the output end of a hydraulic device. A second pressure die is arranged at one side of the first pressure die. A sensing mechanism comprises a stamping column fixedly connected to one side of the first pressure die facing the second pressure die, a sensor fixedly connected to one side of the second pressure die facing the first pressure die, and a cleaning piece telescopically and rotatably arranged at one side of the sensor in a horizontal direction. The cleaning piece is in transmission connection with the stamping column and is used for cleaning the outer wall of one side of the sensor facing the stamping column. During the rising stage of the device, the brush extends out to rotate and wipe the detection end face of the sensor. During the pressing detection stage, the brush automatically retracts to avoid interference. The sensor surface adhered metal scraps and machining residues can be removed in advance, the pressure detection deviation caused by dirt can be eliminated, and the cleaning part cannot interfere with the stamping butt joint pressure bearing process, so that the sensing element is prevented from being extruded and damaged.

Description

Technical Field

[0001] This invention relates to the field of press technology, specifically a multi-axis CNC servo press with a pre-set self-sensing cavity for tensioning. Background Technology

[0002] A press is a processing device that uses hydraulic or mechanical power to generate enormous pressure to form, stamp, cut, straighten, and press-fit workpieces. Mechanical presses rely on flywheels and crankshafts to output impact force and are mostly used for sheet metal stamping and blanking; hydraulic presses rely on oil cylinders to apply pressure, offering high pressure and controllable stroke, suitable for forging, bending, pressing, and powder pressing. They are widely used in industrial settings such as automotive sheet metal processing, hardware manufacturing, mold forming, parts assembly, and building material pressing. Through mold cooperation, they extrude metal, plastic, and powder blanks into specified shapes, making them fundamental heavy-duty equipment in both cold working and hot forging industries.

[0003] Chinese patent application CN115635729A discloses a press for a stamping process. The upper and lower hydraulic cylinders drive the upper and lower semicircular blocks to move, changing the relative position of the connecting shaft and the slider. The lower hydraulic cylinder is equipped with a pressure sensor and is connected to the upper hydraulic cylinder via a hydraulic oil adjusting component. This component adjusts the pressure in the lower hydraulic cylinder, ensuring that the maximum pressure of the hydraulic oil during the stamping stroke remains within a set range. The reaction force during stamping is used to determine whether the die has reached its designated position. The closing height is adjusted by changing the relative position of the connecting shaft and the slider to ensure the die always reaches its designated position. Furthermore, when the die jams, the pressure in the lower hydraulic cylinder exceeds a threshold, triggering the hydraulic oil adjusting component to release pressure initially, overcoming the adverse effects of downtime or standby delays.

[0004] However, the debris and residue generated by the above-disclosed stamping equipment during operation can interfere with the pressure detection of pressure sensing equipment, affecting the detection effect. Summary of the Invention

[0005] The purpose of this invention is to address the problem that the debris and residue generated during the operation of existing stamping equipment can interfere with the pressure detection of pressure sensing equipment and affect the detection effect, by providing a multi-axis CNC servo press with a preset self-sensing cavity.

[0006] To achieve the above objectives, the technical solution of the present invention is: a multi-axis CNC servo press for a tensioner with a preset self-sensing cavity, comprising: The first pressure mold is located at the output end of the hydraulic equipment; The second pressure mold is disposed on one side of the first pressure mold; The sensing mechanism includes: a stamping column, which is fixedly connected to the side of the first pressure die facing the second pressure die; The sensor is fixedly connected to the side of the second pressure mold facing the first pressure mold; A cleaning component is horizontally telescopic and rotatably mounted on one side of the sensor; the cleaning component is connected to the stamping column and is used to clean the outer wall of the sensor facing the stamping column.

[0007] As a further embodiment of the present invention: the sensing mechanism further includes a support frame; the support frame includes a vertically extending upright plate and a horizontally arranged cross plate; the cleaning component is extended, retracted, and rotated along the horizontal direction on the upright plate; the sensor is disposed in the middle of the support frame.

[0008] As a further embodiment of the present invention: the sensing mechanism further includes a linkage drive component; the linkage drive component includes a rotating cylinder and a rotating ring fixedly connected; the rotating cylinder is rotatably disposed on the horizontal plate, and a spiral groove is formed on the radial inner wall of the rotating cylinder; a protrusion is provided on the radial outer wall of the stamping column, and the protrusion is slidably disposed in the spiral groove; when the stamping column moves up and down along the support frame, the rotating cylinder and the rotating ring rotate relative to the support frame.

[0009] As a further embodiment of the present invention: the linkage drive component further includes a conical toothed ring; the conical toothed ring is fixedly connected to the rotating ring; the sensing mechanism further includes a bevel gear; the bevel gear is rotatably disposed on the vertical plate, and the conical toothed ring meshes with the bevel gear; The cleaning component includes a rod; the rod is horizontally telescopic and rotatably mounted on the upright plate; a limiting groove extending horizontally is provided on the outer wall of the rod, the bevel gear has a through meshing cavity, the rod passes through the meshing cavity, a limiting block is provided on the inner wall of the meshing cavity, and the limiting block is slidably mounted on the limiting groove.

[0010] As a further embodiment of the present invention: the sensing mechanism further includes a linkage cover; the linkage cover is fixedly connected to the stamping column; the linkage cover includes an inclined extrusion slope; the cleaning component includes: a brush, fixedly connected to the rod body on the side facing the sensor; A ball seat is fixedly connected to the rod body on the side facing the linkage cover; the extrusion inclined surface abuts against the ball seat and is used to drive the cleaning component to extend and retract in the horizontal direction.

[0011] As a further embodiment of the present invention: the sensing mechanism further includes a reset spring; the reset spring is sleeved on the rod body, one end of the reset spring abuts against the ball seat, and the other end abuts against the upright plate, for providing a reset driving force for the cleaning component.

[0012] As a further embodiment of the present invention: a recessed cavity is provided on the side of the stamping column facing the sensor; a conical seat is provided on the side of the sensor facing the stamping column; the conical seat is used to insert into the recessed cavity.

[0013] As a further embodiment of the present invention: the stamping column includes a connecting arm; the stamping column is fixedly connected to the linkage cover through the connecting arm.

[0014] As a further embodiment of the present invention: the support frame includes a first rotating cavity; the first rotating cavity is opened in the vertical plate in a horizontal direction; the rod is rotatably disposed in the first rotating cavity; a first limiting groove is opened on the outer wall of the vertical plate; the bevel gear includes a second limiting ring; the bevel gear is rotatably disposed in the first limiting groove through the second limiting ring.

[0015] As a further embodiment of the present invention: the support frame includes a second rotating cavity; the second rotating cavity is opened vertically on the horizontal plate; the rotating cylinder is rotatably disposed in the second rotating cavity; a second limiting groove is opened on the inner wall of the second rotating cavity, and a first limiting ring is provided on the outer wall of the rotating cylinder, and the rotating cylinder is rotatably disposed in the second limiting groove through the first limiting ring.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This self-cleaning device relies entirely on the reciprocating motion of the stamping press as its power source, eliminating the need for external drive components such as motors and cylinders. This simplifies the overall piping and electrical control layout, reducing manufacturing costs. The cleaning components are integrated inside the sensing cavity, using conical surface positioning and a multi-stage limiting structure to stabilize the working positions of each transmission part. This resists the vibrations and impacts generated during stamping operations, ensuring long-term transmission precision and preventing failure, resulting in continuous, stable, and reliable cleaning operations.

[0017] During the upward phase of the equipment, the brush extends and rotates to wipe the sensor's detection end face. During the downward detection phase, the brush automatically retracts to avoid interference. This not only removes metal debris and processing residue adhering to the sensor surface in advance, eliminating pressure detection deviations caused by contaminants, but also avoids interfering with the stamping and bonding pressure process, preventing the cleaning components from squeezing and damaging the sensing element. The stamping column and sensor adopt a conical groove fitting structure, automatically completing coaxial alignment during mold closing, distributing the pressure load, and preventing localized stress concentration from damaging the sensor. Attached Figure Description

[0018] The present invention will be further explained below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the sensing mechanism in this invention; Figure 3 This is a cross-sectional view of the sensing mechanism in this invention; Figure 4 This is a three-dimensional structural diagram of the support frame in this invention; Figure 5 This is a cross-sectional view of the linkage drive component in this invention; Figure 6 This is a three-dimensional structural diagram of the sensing mechanism in this invention; Figure 7 This is a three-dimensional structural diagram of the cleaning component in this invention; Figure 8 This is a three-dimensional structural diagram of the bevel gear in this invention; Figure 9 This is a three-dimensional structural diagram of the stamping column in this invention; Figure 10 This is a three-dimensional structural diagram of the linkage cover in this invention.

[0019] Explanation of reference numerals in the attached figures: 100. First pressure mold; 200. Second pressure mold; 300. Sensing mechanism; 310. Stamping column; 311. Connecting arm; 312. Protrusion; 313. Recessed cavity; 320. Sensor; 321. Conical base; 330. Linkage cover; 331. Extrusion slope; 340. Support frame; 341. Vertical plate; 342. Horizontal plate; 343. First rotating cavity; 344. First limiting groove; 345. Second rotating cavity; 346. Second limiting groove; 350. Linkage drive component; 351. Rotating cylinder; 352. Rotating ring; 353. Spiral groove; 354. First limiting ring; 355. Conical toothed ring; 360. Bevel gear; 361. Meshing cavity; 362. Limiting block; 363. Second limiting ring; 370. Cleaning component; 371. Rod body; 372. Limiting groove; 373. Brush; 374. Ball seat; 380. Return spring. Detailed Implementation

[0020] The following will be combined with the appendix Figures 1 to 10 The technical solutions of the present invention have been clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application.

[0022] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] This invention improves upon the multi-axis CNC servo press for tensioners that provides a preset self-sensing cavity, such as... Figures 1-10 As shown, it includes: a first pressure mold 100, which is disposed at the output end of the hydraulic equipment; The second pressure mold 200 is disposed on one side of the first pressure mold 100; The sensing mechanism 300 includes: a stamping column 310, which is fixedly connected to the first pressure mold 100 on the side facing the second pressure mold 200; Sensor 320 is fixedly connected to the side of the second pressure mold 200 facing the first pressure mold 100; The cleaning component 370 is horizontally telescopic and rotatably mounted on one side of the sensor 320; the cleaning component 370 is connected to the stamping column 310 for cleaning the outer wall of the sensor 320 facing the stamping column 310.

[0025] In this embodiment: the hydraulic equipment drives the first pressure mold 100 to reciprocate and press towards the second pressure mold 200. The stamping column 310 fixed on the first pressure mold 100 follows the first pressure mold 100 to complete the reciprocating linear motion of pressing down to close the mold and lifting to open the mold. The stamping column 310, as the power input end, establishes a mechanical transmission relationship with the cleaning component 370 arranged next to the sensor 320.

[0026] In this embodiment: During the downward movement of the stamping column 310, the mechanical transmission structure converts the linear displacement of the stamping column 310 into the horizontal extension movement of the cleaning component 370, and simultaneously converts the linear motion of the stamping column 310 into the circumferential rotational motion of the cleaning component 370. When the stamping column 310 is raised and reset, the transmission mechanism releases the drive constraint, and the cleaning component 370 retracts to its initial standby position. The entire extension and rotation movement is synchronously triggered by the stamping power itself, without the need for external drive components. While horizontally extended and rotating, the cleaning component 370 continuously contacts and wipes the outer wall surface of the sensor 320 facing the stamping column 310, removing metal debris and processing residue that falls and adheres to the sensor surface during the stamping operation.

[0027] In this embodiment: the cleaning component 370 is driven by the inherent motion linkage of the stamping column 310 with the stamping process. The cleaning action is completely matched with the stamping operation sequence. The working surface is automatically cleaned before mold closing detection, preventing waste residue from accumulating and covering the detection end face of the sensor 320.

[0028] The cleaning component 370 combines horizontal feeding to conform to the cleaning surface and rotary wiping, ensuring complete cleaning coverage and thorough removal of residues. This avoids problems such as sensor force deviation and distorted detection values ​​caused by the compression of hard debris.

[0029] See appendix Figure 3 - Appendix Figure 4 and attached Figure 6 The sensing mechanism 300 also includes a support frame 340; the support frame 340 includes a vertically extending upright plate 341 and a horizontally arranged cross plate 342; the cleaning component 370 is horizontally telescopically and rotatably mounted on the upright plate 341; the sensor 320 is located in the middle of the support frame 340.

[0030] In this embodiment: the support frame 340 is formed by combining the vertical plate 341 and the horizontal plate 342 to form an integral rigid load-bearing frame, which is assembled in the corresponding area of ​​the second pressure mold 200. The vertical plate 341 provides a horizontal sliding channel and a rotation mounting reference for the cleaning component 370, restricting the movement trajectory of the cleaning component 370 to only complete horizontal extension and self-rotation, and constraining the cleaning component 370 to avoid radial and vertical offset during operation.

[0031] In this embodiment: the horizontal plate 342 and the vertical plate 341 are fixed together to form an enclosed space. The sensor 320 is fixed in the central area of ​​the support frame 340. The vertical plate 341 and the horizontal plate 342 can form a protective enclosure around the sensor 320, and the sensor 320 and the cleaning component 370 are uniformly housed in the cavity enclosed by the support frame 340, forming a closed self-sensing cavity structure. When the stamping vibration is transmitted to each component, the overall rigid structure of the support frame 340 can distribute the vibration load and firmly lock the mounting points of the sensor 320 and the cleaning component 370, ensuring that their relative positions remain fixed.

[0032] In this embodiment: the upright plate 341 precisely defines the movement direction of the cleaning component 370, ensuring that the cleaning component 370 can accurately align with the outer wall of the sensor 320 for cleaning after it extends, preventing misalignment and scratching of the non-working surface of the sensor. The mounting point in the middle of the support frame 340 fixes the sensor 320, preventing the sensor 320 from loosening or shifting due to impact, and maintaining a constant pressure detection reference position. The upright plate 341 and the horizontal plate 342 form a cavity enclosure structure, preventing large-volume splashed waste from directly impacting the sensor 320 body, and providing double protection for the sensing element in conjunction with the cleaning action of the cleaning component 370. All sensing and self-cleaning components are integrated on the support frame 340, with a centralized and neat structure, facilitating overall disassembly and maintenance, while improving the overall impact and vibration resistance of the sensing mechanism 300, ensuring stable and reliable pressure detection data over a long period of time.

[0033] See appendix Figure 3 and attached Figure 5 The sensing mechanism 300 also includes a linkage drive component 350; the linkage drive component 350 includes a rotating cylinder 351 and a rotating ring 352 fixedly connected; the rotating cylinder 351 is rotatably mounted on the horizontal plate 342, and a spiral groove 353 is provided on the radial inner wall of the rotating cylinder 351; a protrusion 312 is provided on the radial outer wall of the stamping column 310, and the protrusion 312 is slidably mounted on the spiral groove 353; when the stamping column 310 moves up and down along the support frame 340, the rotating cylinder 351 and the rotating ring 352 rotate relative to the support frame 340.

[0034] In this embodiment: the linkage drive component 350 is rotatably mounted on the horizontal plate 342 of the support frame 340. The rotating cylinder 351 and the rotating ring 352, which are fixedly connected to each other, form an integrated rotating base, which can achieve stable circumferential rotation under the limiting support of the horizontal plate 342. A spiral groove 353 is opened on the inner side of the rotating cylinder 351, and the protrusion 312 fixed on the outer wall of the stamping column 310 is slidably embedded in the spiral groove 353, forming a spiral sliding transmission cooperation structure.

[0035] In this embodiment: When the press is operating, the stamping column 310 follows the first pressure die 100 in a reciprocating linear stamping motion. The protrusion 312 moves vertically synchronously with the stamping column 310. The vertically moving protrusion 312 continuously slides against the wall of the spiral groove 353. Utilizing the inclined guiding characteristics of the spiral groove 353, the vertical linear motion of the stamping column 310 is converted into the circumferential rotational motion of the rotating cylinder 351. Since the rotating cylinder 351 and the rotating ring 352 are fixed as one unit, the rotation of the rotating cylinder 351 will simultaneously drive the rotating ring 352 to rotate coaxially. The entire process relies on the inherent mechanical motion of the stamping operation to achieve power input, without the need for additional drive equipment such as motors or cylinders. The motion process starts and stops synchronously with the lifting and lowering action of the stamping column 310.

[0036] In this embodiment, the structure cleverly achieves a precise conversion from linear motion to rotational motion through the helical transmission cooperation between the protrusion 312 and the helical groove 353. This provides a stable power source for the subsequent rotational cleaning operation of the cleaning component 370, realizing fully automatic linkage between the cleaning action and the stamping process without manual control intervention. Relying on the assembly limit of the rotating cylinder 351 by the horizontal plate 342, it can be ensured that there is no offset or jamming during the rotation of the rotating cylinder 351 and the rotating ring 352, resulting in high transmission accuracy and strong operational stability. The entire transmission structure is integrated inside the sensing mechanism 300, with a compact structure that does not occupy additional equipment space.

[0037] See appendix Figure 3 -Appendix Figure 7 The linkage drive component 350 also includes a conical toothed ring 355; the conical toothed ring 355 is fixedly connected to the rotating ring 352; the sensing mechanism 300 also includes a bevel gear 360; the bevel gear 360 is rotatably mounted on the vertical plate 341, and the conical toothed ring 355 meshes with the bevel gear 360; The cleaning component 370 includes a rod 371; the rod 371 is horizontally telescopic and rotatably mounted on the upright plate 341; a limiting groove 372 extending horizontally is provided on the outer wall of the rod 371; the bevel gear 360 has a through meshing cavity 361; the rod 371 passes through the meshing cavity 361; a limiting block 362 is provided on the inner wall of the meshing cavity 361; the limiting block 362 is slidably mounted on the limiting groove 372.

[0038] In this embodiment, the conical gear ring 355 of the linkage drive component 350 is fixed to the rotating ring 352 as a whole, and can rotate synchronously and coaxially with the rotating ring 352 to obtain continuous circumferential power. The bevel gear 360 is rotatably mounted on the vertical plate 341 of the support frame 340. By meshing with the conical gear ring 355, it reverses the horizontal rotational power of the conical gear ring 355, realizing the precise conversion of vertical rotational power to lateral horizontal rotational power.

[0039] In this embodiment: the rod 371 of the cleaning component 370 passes through the meshing cavity 361 in the middle of the bevel gear 360. A limiting groove 372 is formed on the outer wall of the rod 371 in the horizontal direction. A limiting block 362 fixed on the inner wall of the meshing cavity 361 is slidably embedded in the limiting groove 372 to form a sliding limiting fit structure. This structure allows the bevel gear 360 to engage with the limiting groove 372 through the limiting block 362 without restricting the horizontal extension and retraction of the rod 371, thereby driving the rod 371 to rotate synchronously.

[0040] In this embodiment: throughout the entire process of the reciprocating motion of the stamping column 310 driving the linkage drive component 350, the bevel gear 360 continuously rotates, always providing rotational driving force to the rod 371, ensuring that the cleaning component 370 has the motion basis for self-rotation cleaning, while retaining the independent horizontal extension and retraction motion degree of freedom of the rod 371, realizing the mutual independence and non-interference of rotational motion and linear extension and retraction motion.

[0041] In this embodiment: the power steering transmission is completed through the bevel gear meshing of the conical toothed ring 355 and the bevel gear 360, which is adapted to the overall assembly structure of the equipment and accurately transmits the rotational power of the stamping linkage to the cleaning component 370. The cleaning component 370 can be automatically rotated without the need for additional power components. By utilizing the sliding cooperation structure of the limiting groove 372 and the limiting block 362, motion decoupling is cleverly achieved. This ensures that the bevel gear 360 can stably drive the rod 371 to rotate synchronously when rotating, ensuring stable cleaning rotation torque and no transmission backlash. At the same time, it does not hinder the horizontal extension and retraction of the rod 371, so that the cleaning component 370 can simultaneously complete the composite cleaning action of extension and retraction and rotation wiping.

[0042] See appendix Figure 2 -Appendix Figure 3 and attached Figure 10 The sensing mechanism 300 also includes a linkage cover 330; the linkage cover 330 is fixedly connected to the stamping column 310; the linkage cover 330 includes an inclined extrusion slope 331; the cleaning component 370 includes a brush 373, which is fixedly connected to the rod 371 on the side facing the sensor 320. The ball seat 374 is fixedly connected to the rod body 371 on the side facing the linkage cover 330; the extrusion inclined surface 331 abuts against the ball seat 374 and is used to drive the cleaning component 370 to extend and retract in the horizontal direction.

[0043] In this embodiment: the linkage cover 330 is fixedly installed on the stamping column 310 and can synchronously complete the up-and-down reciprocating stamping stroke movement with the stamping column 310. The extrusion slope 331 of the linkage cover 330 is an inclined force transmission surface. The two ends of the rod 371 of the cleaning component 370 are respectively equipped with a brush 373 and a ball seat 374. The brush 373 faces the outer wall surface of the sensor 320, and the ball seat 374 always corresponds to the movement trajectory of the extrusion slope 331. When the equipment opens the mold and the stamping column 310 is in the upward rising state, the linkage cover 330 moves upward synchronously. The extrusion slope 331 continuously presses against the ball seat 374. The slope of the slope converts the vertical upward displacement of the stamping column 310 into a horizontal thrust, pushing the rod 371 to extend horizontally towards the sensor 320 along the vertical plate 341, so that the brush 373 is tightly attached to the outer wall surface of the sensor 320, completing the cleaning and attachment preparation.

[0044] In this embodiment: when the equipment closes the mold and the stamping column 310 moves downward, the linkage cover 330 moves downward accordingly, and the extrusion slope 331 gradually gets away from the pressure constraint on the ball seat 374. The horizontal thrust is completely released. With the elastic reset action of the return spring 380, the rod 371 is driven to retract horizontally away from the sensor 320, so that the brush 373 automatically gets off the surface of the sensor 320 after cleaning. The entire process relies on the lifting stroke of the stamping column 310 to achieve powerless linkage extension and retraction, matching the stamping operation sequence of the equipment.

[0045] In this embodiment, the automatic action logic of rising, extending to clean, and pressing down to avoid obstacles is precisely realized through the abutment and cooperation between the extrusion slope 331 of the linkage cover 330 and the slope of the ball seat 374. The ball seat 374 with spherical structure can adaptively fit the tilt angle of the extrusion slope 331, and the transmission process is smooth without jamming or rigid jamming, which greatly improves the stability of mechanical transmission.

[0046] During the rising and standby phase of the stamping column 310, the surface of the sensor 320 is cleaned in advance to remove residual debris and residue, preventing impurities from affecting the accuracy of subsequent pressure detection. During the pressing and mold closing detection phase, the brush 373 retracts to avoid interference from the cleaning structure, ensuring the precise docking and pressure bearing of the stamping column 310 and the sensor 320, and guaranteeing the accuracy of the pressure detection benchmark.

[0047] See appendix Figure 6 -Appendix Figure 7 The sensing mechanism 300 also includes a reset spring 380; the reset spring 380 is sleeved on the rod 371, one end of the reset spring 380 abuts against the ball seat 374, and the other end abuts against the upright plate 341, for providing the reset driving force for the cleaning component 370.

[0048] In this embodiment: the return spring 380 is fitted outside the rod 371, with its two axial ends abutting against the ball seat 374 and the upright plate 341, respectively. During the upward movement of the stamping column 310, the extrusion slope 331 of the linkage cover 330 presses the ball seat 374 downward, driving the rod 371 to extend horizontally towards the sensor 320. The ball seat 374 simultaneously presses the return spring 380, compressing the spring and storing elastic potential energy. The brush 373 adheres to the surface of the sensor 320 to perform cleaning operations. When the stamping column 310 presses down, the extrusion slope 331 moves down and releases the ball seat 374. The external extrusion force disappears, and the return spring 380 releases the stored elastic potential energy, applying a horizontal pulling force towards the upright plate 341 to the ball seat 374. This causes the rod 371 and the brush 373 to retract away from the sensor 320, completing the reset action of the cleaning component 370. The entire telescopic reset process automatically coordinates with the stamping lifting stroke.

[0049] In this embodiment, the return spring 380 and the extrusion ramp 331 constitute a complete mechanical telescopic drive system. The cleaning extension action is completed by the upward extrusion force of the stamping, and the retraction and reset action during the downward pressing phase is completed by the spring force. No independent drive mechanism is required, simplifying the overall structural layout. The spring buffers the mechanical impact generated by the reciprocating motion of the rod 371, reducing rigid impact wear between the rod 371, the upright plate 341, and the ball seat 374, extending the service life of each component. During the downward mold closing detection period, the brush 373 retracts to avoid the sensor docking area, preventing interference with the alignment and pressure detection of the stamping column 310 and the sensor 320, ensuring a stable pressure acquisition benchmark. After each cleaning cycle, the cleaning component 370 accurately returns to its fixed initial position, ensuring consistent and standardized cleaning actions for each stamping cycle, continuously maintaining the cleanliness of the sensor 320 detection end face, eliminating the problem of detection value drift caused by debris accumulation, and improving the stability and accuracy of pressure detection under long-term working conditions.

[0050] See appendix Figure 3 -Appendix Figure 4 and attached Figure 9 The stamping column 310 has a recessed cavity 313 on the side facing the sensor 320; the sensor 320 has a conical seat 321 on the side facing the stamping column 310; the conical seat 321 is used to insert into the recessed cavity 313.

[0051] In this embodiment, a recessed cavity 313 is machined on the mating end face of the stamping column 310, and a conical seat 321 is fixed on the corresponding end face of the sensor 320. When the stamping column 310 is pressed down to close the mold for pressure detection, the conical seat 321 is precisely embedded inside the recessed cavity 313. Relying on the tapered guiding effect of the conical surface, the coaxiality of the stamping column 310 and the sensor 320 is automatically corrected, offsetting the radial offset caused by stamping vibration and part machining tolerance, so that the stamping load is transmitted vertically and evenly to the force-bearing end face of the sensor 320.

[0052] In this embodiment: when the two parts are fitted together, a sealed contact surface is formed, which can prevent stamping debris from entering the sensing contact area through the joint gap, reducing the accumulation of dirt. After the stamping mold is opened and separated, the conical seat 321 is dislodged from the recessed cavity 313, and with the cleaning action of the brush 370, the waste residue attached to the inner wall of the recessed cavity 313 can be cleaned smoothly.

[0053] In this embodiment, the conical seat 321 and the recessed cavity 313 form a conical centering structure, which realizes automatic centering and positioning during mold closing, avoids local stress concentration of the sensor 320 caused by load imbalance, and prevents distortion of pressure detection data. The conical surface fit has stronger sealing performance, preventing dust and debris from entering the pressure-bearing mating surface and reducing the probability of the sensor's stress surface being damaged by hard particles.

[0054] See appendix Figure 2 and attached Figure 9 The stamping column 310 includes a connecting arm 311; the stamping column 310 is fixedly connected to the linkage cover 330 through the connecting arm 311.

[0055] In this embodiment: the connecting arm 311 is fixed to the outer wall of the stamping column 310, and the linkage cover 330 is locked and fixed by means of the connecting arm 311, so that the linkage cover 330 and the stamping column 310 form a rigid integral structure. When the stamping column 310 moves up and down, the connecting arm 311 synchronously transmits displacement, ensuring that the lifting stroke and movement speed of the linkage cover 330 and the stamping column 310 are completely synchronized, and there will be no relative displacement deviation. The connecting arm 311 separates the linkage cover 330 from the main body of the stamping column 310, leaving assembly space to avoid the linkage cover 330 interfering with the docking and cooperation between the stamping column 310 and the sensor 320.

[0056] The connecting arm 311 ensures a stable mounting of the linkage cover 330, enhancing overall connection rigidity and preventing loosening or displacement under reciprocating vibration during stamping. This guarantees a constant pressure stroke from the extrusion ramp 331 onto the ball seat 374, and ensures consistent extension and retraction of the cleaning component 370. The split mounting structure facilitates easy assembly and disassembly; maintenance of the cleaning structure can be performed by separately removing the linkage cover 330 without disassembling the main body of the stamping column 310, thus improving maintenance convenience. The synchronized motion throughout the process ensures precise matching between the cleaning action and the stamping process, stabilizing the reliability of the self-cleaning mechanism.

[0057] See appendix Figure 3 -Appendix Figure 4 and attached Figure 8 The support frame 340 includes a first rotating cavity 343; the first rotating cavity 343 is opened horizontally on the upright plate 341; the rod body 371 is rotatably disposed in the first rotating cavity 343; the outer wall of the upright plate 341 is provided with a first limiting groove 344; the bevel gear 360 includes a second limiting ring 363, and the bevel gear 360 is rotatably disposed in the first limiting groove 344 through the second limiting ring 363.

[0058] In this embodiment: A first rotating cavity 343 is horizontally formed inside the upright plate 341. The rod 371 is assembled inside the first rotating cavity 343. The first rotating cavity 343 constrains the radial position of the rod 371, allowing only circumferential rotation and horizontal axial sliding of the rod 371, thus limiting radial swaying and deflection of the rod 371. A first limiting groove 344 is formed on the outer wall of the upright plate 341. The bevel gear 360 has a second limiting ring 363. The second limiting ring 363 is engaged inside the first limiting groove 344 to achieve axial limiting. The bevel gear 360 can only rotate circumferentially within the groove, preventing axial movement and detachment, thus ensuring that the assembly position of the bevel gear 360 and the rod 371 remains fixed.

[0059] The first rotating cavity 343 provides a regular movement channel for the rod 371, ensuring smooth rotation and extension of the rod 371, reducing frictional resistance, and resulting in a regular and uniform cleaning trajectory for the brush 373. The second limiting ring 363, in conjunction with the first limiting groove 344, locks the axial position of the bevel gear 360, preventing axial displacement during operation. The meshing depth between the conical toothed ring 355 and the bevel gear 360 remains constant, preventing tooth skipping or disengagement during transmission, ensuring continuous and stable power transmission. The entire limiting structure enhances the overall structural strength of the sensing mechanism 300, resisting vibration and impact from stamping operations. The transmission accuracy remains consistent over long-term operation, stabilizing the self-rotating cleaning effect of the cleaning component 370 and continuously ensuring the quality of waste removal from the sensor 320 surface.

[0060] See appendix Figure 4 -Appendix Figure 5 The support frame 340 includes a second rotating cavity 345; the second rotating cavity 345 is vertically opened on the horizontal plate 342; the rotating cylinder 351 is rotatably disposed in the second rotating cavity 345; the inner wall of the second rotating cavity 345 is provided with a second limiting groove 346, and the outer wall of the rotating cylinder 351 is provided with a first limiting ring 354, and the rotating cylinder 351 is rotatably disposed in the second limiting groove 346 through the first limiting ring 354.

[0061] In this embodiment: a second rotating cavity 345 is vertically formed in the horizontal plate 342, and a rotating cylinder 351 is assembled inside the second rotating cavity 345. The second rotating cavity 345 restricts the radial displacement of the rotating cylinder 351, allowing only circumferential rotation. A second limiting groove 346 is provided on the inner wall of the second rotating cavity 345, and a first limiting ring 354 is fixed on the outer wall of the rotating cylinder 351. The first limiting ring 354 is embedded in the second limiting groove 346, forming an axial locking constraint on the rotating cylinder 351. The axial force generated by the vertical movement of the stamping column 310 cannot drive the rotating cylinder 351 to move up and down. When the protrusion 312 slides in the spiral groove 353, the position of the rotating cylinder 351 remains fixed, ensuring a stable and smooth conversion process from linear motion to rotational motion.

[0062] The second rotating cavity 345 provides radial support and positioning for the rotating cylinder 351, reducing the amount of swaying during high-speed rotation and lowering transmission friction losses. The first limiting ring 354 cooperates with the second limiting groove 346 to firmly lock the axial position of the rotating cylinder 351, avoiding cylinder displacement and disassembly caused by stamping impact, ensuring that the mating depth of the protrusion 312 and the spiral groove 353 is always consistent, and preventing slippage and jamming during transmission. The entire limiting assembly structure improves the operational stability of the linkage drive component 350, ensuring a continuous and stable transmission of rotational power to the rear bevel gear 360, maintaining the stable self-rotation cleaning condition of the cleaning component 370, sustaining the slag removal effect of the sensor 320 for a long time, and effectively isolating residual debris from interfering with the pressure detection values.

[0063] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and inventive features disclosed herein.

Claims

1. A multi-axis CNC servo press for a tensioner with a preset self-sensing cavity, characterized in that, The first pressure mold (100) is located at the output end of the hydraulic equipment; The second pressure mold (200) is disposed on one side of the first pressure mold (100); The sensing mechanism (300) includes: A stamping column (310) is fixedly connected to the side of the first pressure die (100) facing the second pressure die (200); The sensor (320) is fixedly connected to the side of the second pressure mold (200) facing the first pressure mold (100); A cleaning component (370) is horizontally telescopically and rotatably disposed on one side of the sensor (320); the cleaning component (370) is connected to the stamping column (310) for cleaning the outer wall of the sensor (320) facing the stamping column (310).

2. The multi-axis CNC servo press for a tensioner with a preset self-sensing cavity according to claim 1, characterized in that, The sensing mechanism (300) also includes a support frame (340); The support frame (340) includes a vertically extending upright plate (341) and a horizontally arranged cross plate (342); the cleaning component (370) is extended, retracted, and rotated in the horizontal direction on the upright plate (341); the sensor (320) is located in the middle of the support frame (340).

3. The multi-axis CNC servo press for a tensioner with a preset self-sensing cavity according to claim 2, characterized in that, The sensing mechanism (300) also includes a linkage drive component (350); The linkage drive component (350) includes a rotating cylinder (351) and a rotating ring (352) fixedly connected; the rotating cylinder (351) is rotatably mounted on the horizontal plate (342), and a spiral groove (353) is provided on the radial inner wall of the rotating cylinder (351); a protrusion (312) is provided on the radial outer wall of the stamping column (310), and the protrusion (312) is slidably mounted on the spiral groove (353); When the stamping column (310) moves up and down along the support frame (340), the rotating cylinder (351) and the rotating ring (352) rotate relative to the support frame (340).

4. The tensioner multi-axis CNC servo press with a preset self-sensing cavity according to claim 3, characterized in that, The linkage drive component (350) also includes a conical toothed ring (355); The conical toothed ring (355) is fixedly connected to the rotating ring (352); the sensing mechanism (300) also includes a bevel gear (360); the bevel gear (360) is rotatably disposed on the vertical plate (341), and the conical toothed ring (355) meshes with the bevel gear (360); The cleaning component (370) includes a rod (371); The rod (371) is horizontally telescopic and rotatably mounted on the upright plate (341); a limiting groove (372) extending horizontally is provided on the outer wall of the rod (371); the bevel gear (360) is provided with a through meshing cavity (361); the rod (371) passes through the meshing cavity (361); a limiting block (362) is provided on the inner wall of the meshing cavity (361); the limiting block (362) is slidably mounted on the limiting groove (372).

5. The tensioner multi-axis CNC servo press with a preset self-sensing cavity according to claim 4, characterized in that, The sensing mechanism (300) also includes a linkage cover (330); The linkage cover (330) is fixedly connected to the stamping column (310); the linkage cover (330) includes an inclined extrusion slope (331). The cleaning component (370) includes: A brush (373) is fixedly connected to the rod (371) on the side facing the sensor (320); A ball seat (374) is fixedly connected to the rod body (371) on the side facing the linkage cover (330); the extrusion inclined surface (331) abuts against the ball seat (374) and is used to drive the cleaning component (370) to extend and retract in the horizontal direction.

6. The multi-axis CNC servo press for a tensioner with a preset self-sensing cavity according to claim 5, characterized in that, The sensing mechanism (300) also includes a return spring (380); The reset spring (380) is sleeved on the rod (371). One end of the reset spring (380) abuts against the ball seat (374), and the other end abuts against the upright plate (341), which is used to provide the reset driving force of the cleaning component (370).

7. The multi-axis CNC servo press for a tensioner with a preset self-sensing cavity according to any one of claims 1-6, characterized in that, The stamping column (310) has a recessed cavity (313) on the side facing the sensor (320). The sensor (320) is provided with a conical seat (321) on the side facing the stamping column (310); the conical seat (321) is used to insert into the recessed cavity (313).

8. The tensioner multi-axis CNC servo press with a preset self-sensing cavity according to claim 5, characterized in that, The stamping column (310) includes a connecting arm (311); The stamping column (310) is fixedly connected to the linkage cover (330) via the connecting arm (311).

9. The tensioner multi-axis CNC servo press with a preset self-sensing cavity according to claim 4, characterized in that, The support frame (340) includes a first rotating cavity (343); The first rotating cavity (343) is opened horizontally on the vertical plate (341); the rod (371) is rotatably disposed in the first rotating cavity (343). And / or, the outer wall of the upright plate (341) is provided with a first limiting groove (344), the bevel gear (360) includes a second limiting ring (363), and the bevel gear (360) is rotatably disposed in the first limiting groove (344) through the second limiting ring (363).

10. The tensioner multi-axis CNC servo press with a preset self-sensing cavity according to claim 4, characterized in that, The support frame (340) includes a second rotating cavity (345); The second rotating cavity (345) is vertically formed on the horizontal plate (342); the rotating cylinder (351) is rotatably disposed in the second rotating cavity (345). And / or, the inner wall of the second rotating cavity (345) is provided with a second limiting groove (346), and the outer wall of the rotating cylinder (351) is provided with a first limiting ring (354). The rotating cylinder (351) is rotatably disposed in the second limiting groove (346) through the first limiting ring (354).

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