A three-surface polishing and punching integrated processing device for minimally invasive injection and infusion needles

Abstract

The application discloses a kind of minimally invasive injection needle three-face polishing punch integrated processing device, medical instrument processing equipment technical field, including fixed seat, rotary disc, rotary motor, needle mechanism, lower needle mechanism, three polishing mechanisms and three punch mechanisms, the edge of rotary disc is equipped with needle clamping mechanism, one end of needle clamping mechanism is fixed with regular triangular prism indexing stopper, and the other end is equipped with clamping part. Three indexing convex rods are provided on the boss, and are respectively arranged on the downstream side of each processing mechanism. When the indexing stopper and the indexing convex rod abut, the needle clamping shaft is rotated by 120°. The application integrates needle lifting, clamping, indexing, polishing, punching and needle lowering into one, simplifies the structure, operates reliably, can independently process a single needle body, and meets the needs of research and development, debugging and small-batch production.

Description

Technical Field

[0001] This invention belongs to the field of medical device processing equipment technology, specifically relating to an integrated processing device for grinding and drilling three sides of a minimally invasive infusion needle. Background Technology

[0002] Traditional straight-hole infusion needles (beveled needles) are typically manufactured by cutting a bevel at one end of a stainless steel tube and grinding a cutting edge around it. Their insertion mechanism relies on the beveled needle tip cutting against the surrounding tissue. However, during puncture, skin or blood vessel wall tissue opposite the needle hole is cut off, forming tiny tissue debris. This debris can easily clog the needle tube and enter the body with the medication, potentially causing bacterial infection or becoming insoluble vascular waste, posing a risk of thrombosis and, in severe cases, endangering the patient's life. To address these fundamental shortcomings, the industry has proposed an innovative design for minimally invasive infusion needles. These needles have a closed conical tip, while the medication passage is located on three facets near the tip, commonly known as a three-sided needle. During insertion, the three-sided needle body gently expands rather than cuts the tissue, achieving debris-free infusion and fundamentally solving the clinical risks of traditional straight-hole needles.

[0003] The three edges of a triangular needle require extremely high geometric precision and surface quality to ensure its puncture performance. In the prior art, invention patents with authorization announcement numbers CN118636024B and CN118513618B disclose a triangular needle electrical discharge machining device and its rotary indexing device, which can realize processes such as needle loading, automatic indexing rotation, grinding, drilling, and needle unloading. However, its rotary indexing uses a method where sector gears and indexing gears mesh during rotation. Although this mechanism can achieve automatic indexing, its structure is precise and complex, requiring high manufacturing and assembly precision, resulting in high equipment costs and inconvenient maintenance. Furthermore, the aforementioned machining device adopts a multi-needle parallel machining design, with each needle clamping mechanism containing multiple (e.g., four) needle clamping units, suitable for mass production. However, when dealing with scenarios such as R&D verification, process debugging, small-batch customization, or rework, its complex structure makes the economy and flexibility of single needle machining insufficient, and maintenance costs high.

[0004] In actual production, for processing scenarios requiring simultaneous grinding and drilling, especially in situations demanding flexible adjustments such as R&D verification, process debugging, and small-batch customization, an integrated device capable of independently processing and debugging individual needles is still needed to balance processing efficiency and process flexibility. Therefore, there is an urgent need for a relatively simplified, easy-to-maintain integrated processing device for three-sided grinding and drilling of minimally invasive infusion needles, capable of independently processing and debugging individual needles to meet the flexible needs of R&D verification, process debugging, and small-batch customization scenarios. Summary of the Invention

[0005] To address the shortcomings of the prior art, this invention provides an integrated processing device for three-sided grinding and drilling of minimally invasive infusion needles. The indexing mechanism has a simpler structure than existing equipment, lower manufacturing costs, and is easy to maintain. It can independently process and debug a single needle body, making it suitable for scenarios such as R&D trials, process debugging, and small-batch customization.

[0006] To achieve the above objectives, the technical solution of this invention is as follows: A three-sided grinding and drilling integrated processing device for minimally invasive infusion needles includes a fixed base, a rotary table, a rotary motor, an upper needle mechanism, a lower needle mechanism, and three sets of processing mechanisms. The fixed base has a boss at its upper end; the rotary table is rotatably connected to the top of the boss and driven by the rotary motor; at least one radially arranged needle clamping mechanism is provided at the edge of the rotary table; the needle clamping mechanism includes a needle clamping seat and a needle clamping assembly; the needle clamping seat is connected to the rotary table; the needle clamping assembly includes a needle clamping shaft rotatably connected to the needle clamping seat and a regular polygonal prism-shaped indexing stop coaxially fixed to one end of the needle clamping shaft; the other end of the needle clamping shaft has a clamping part for clamping the minimally invasive infusion needle; the upper needle mechanism, the three sets of processing mechanisms, and the lower needle mechanism are located along the rotary table. The outer periphery is arranged in sequence at intervals. Each group of processing mechanisms includes a grinding mechanism and a drilling mechanism arranged in sequence. Three indexing protrusions are fixedly provided on the boss. The three indexing protrusions are respectively located on the downstream side of each group of processing mechanisms. Rollers are rotatably connected to the three apex corners of the indexing block on the side away from the needle clamping shaft. An arc-shaped guide rail is provided on the boss between every two indexing protrusions. The starting end of the arc-shaped guide rail is a ramp surface. When the indexing block rotates with the rotary table to abut against any of the indexing protrusions, the indexing block is forced to drive the needle clamping shaft to rotate 120°. After the indexing block completes the indexing rotation, the rollers and the arc-shaped guide rail roll together to form auxiliary support for the indexing block and the needle clamping shaft, preventing them from shaking during subsequent idle rotation.

[0007] Preferably, the clamping part includes a positioning groove at the end of the needle shaft, a clamping groove adjacent to the positioning groove, and a clamp rotatably connected to the needle shaft via a fixed shaft. The jaws of the clamp correspond to the clamping groove, and a first spring is connected between the tail of the clamp and the needle shaft, causing the jaws to tend to close into the clamping groove. Pressing the tail of the clamp opens the jaws, facilitating the placement and removal of the minimally invasive infusion needle.

[0008] Preferably, the needle feeding mechanism includes a needle holder, on which a needle box, a needle delivery mechanism, and a needle pushing mechanism are provided. The needle delivery mechanism is located on the lower inner side of the needle box. The bottom of the needle box has a needle drop port, and directly below the needle drop port is a needle support seat with a needle support groove. The needle pushing mechanism cooperates with the needle support seat to push the minimally invasive infusion needle in the needle support groove into the clamping part on the needle clamping shaft. The needle delivery mechanism includes a needle ring and a needle delivery motor. The needle ring is a horizontally arranged cylindrical structure and is rotatably installed inside the needle box. Its outer circumference is covered with... The needle ring has at least two needle feed slots evenly spaced and parallel to its central axis. A needle guide roller is provided above the needle ring. The outer circumference of the needle guide roller is arranged in a circular array with needle guide brushes corresponding to the number of needle feed slots. The needle guide brushes cooperate with the needle ring. One end of the needle guide roller is connected to a drive gear. The drive gear meshes with a driven gear located at one end of the needle ring. The drive gear is connected to a needle feed motor. When the needle ring rotates to receive the needle body, the needle guide roller rotates in the opposite direction to drive the needle guide brushes to push the needle body that has not fallen into the needle feed slot into the slot, thus avoiding empty slots in the needle feed slots.

[0009] Preferably, two baffles are provided between the upper and lower sections of the needle box. The two baffles are inserted into slots on opposite side walls of the needle box and are stacked one on top of the other. The opening state between the two baffles can be changed by pulling outward or pushing inward. The area above the baffles is a storage area. When there are no needles in the needle box, the needles can be replenished. A rated replenishment rate can also be set to continuously replenish needles.

[0010] Preferably, the needle-pushing mechanism includes a movable plate, a first needle-pushing cylinder, a pin ejector, a needle-pushing block, and a second needle-pushing cylinder. The needle support seat is fixedly connected to the movable plate, and the movable plate is slidably connected to the upper needle seat. The first needle-pushing cylinder is fixedly connected to the upper needle seat, and its output shaft is connected to the movable plate. The needle-pushing block is slidably connected to the movable plate. A guide rod is connected to the side of the needle-pushing block away from the center of the rotary table. A second spring is sleeved on the guide rod, and a transition plate is slidably connected to it. The second spring is located between the transition plate and the needle-pushing block. The second needle-pushing cylinder is fixedly connected to the movable plate, and its output shaft is connected to the transition plate. The pin ejector is located on the side of the needle-pushing block near the center of the rotary table and is coaxially arranged with the needle support groove on the needle support seat.

[0011] Preferably, the needle-feeding mechanism includes a needle-feeding base, a movable base, a turntable, and a movable needle-feeding seat. The movable base is slidably connected to the needle-feeding base and is connected to a screw and nut mechanism for driving its sliding. The turntable is rotatably connected to the upper end of the movable base and is driven by a first rotary motor. The movable needle-feeding seat is rotatably connected to the upper part of the other end of the turntable and is driven by a second rotary motor. A needle-feeding cylinder is installed on the movable needle-feeding seat. The output shaft of the needle-feeding cylinder is connected to a needle-clamping gripper. Through the coordinated drive of the first and second rotary motors, the needle-feeding gripper can flexibly adjust its posture within a limited space to adapt to needle-clamping mechanisms in different positions.

[0012] Preferably, the upper needle mechanism is provided with an upper needle opening cylinder on the side near the center of the rotary table, and the lower needle mechanism is provided with a lower needle opening cylinder on the side near the center of the rotary table. The output shafts of the upper needle opening cylinder and the lower needle opening cylinder are both arranged upwards to press the clamp tail of the clamping part to open the jaws, so as to facilitate the insertion or removal of the needle body.

[0013] Preferably, the grinding mechanism includes a grinding base and a movable seat. The movable seat is rotatably connected to the grinding base via a first rotating shaft. The movable seat is provided with a grinding assembly. The grinding base is provided with an auxiliary clamping seat for fixing the workpiece during grinding and an angle adjustment assembly for driving the movable seat to rotate around the first rotating shaft to adjust the tilt angle of the movable seat. The angle adjustment assembly includes a lead screw, a base slider, and a driving component. The lead screw is rotatably connected to the grinding base along the radial direction of the rotary table and is driven to rotate by the driving component. The base slider is threadedly connected to the lead screw and slidably connected to the grinding base. The upper part of the base slider is provided with an inclined slope surface and a guide groove. The bottom of the movable seat is provided with a guide protrusion that slidably engages with the guide groove. When the lead screw rotates and drives the base slider to move, the slope surface pushes the movable seat to rotate around the first rotating shaft.

[0014] Preferably, the polishing assembly includes a first slide plate, a second slide plate, a polishing wheel, and a polishing motor for driving the polishing wheel to rotate, all mounted on a movable base. The first slide plate is movable relative to the movable base along the radial direction of the rotary table, and the second slide plate is movable relative to the first slide plate in a direction perpendicular to the radial direction. The polishing wheel is mounted on the second slide plate. The movable base is equipped with a first drive motor and a second drive motor. The output shaft of the first drive motor is connected to a first eccentric member, which is hinged to the first slide plate to drive its movement. The output shaft of the second drive motor is connected to a second eccentric member, which is hinged to the second slide plate to drive its movement. The second slide plate is equipped with a lifting adjustment assembly for adjusting the height of the polishing wheel. The lifting adjustment assembly includes a support rod, a swing arm, and a linear actuator. The support rod is mounted on the second slide plate. One end of the swing arm is rotatably connected to the top of the support rod via a second rotating shaft, and the other end is connected to the polishing wheel. The linear actuator is connected between the second slide plate and the swing arm to drive the swing arm to swing around the second rotating shaft.

[0015] Preferably, the auxiliary clamping seat includes an upper clamping plate and a lower clamping plate that cooperates with the upper clamping plate. The lower end of the lower clamping plate is connected to a lifting cylinder. The lower clamping plate is provided with a needle-holding groove for accommodating the minimally invasive infusion needle. The auxiliary clamping seat is provided with a needle-avoiding groove on the side near the center of the rotary table for the needle clamping mechanism to carry the minimally invasive infusion needle into the rotary table. The upper clamping plate is provided with a clearance groove on the side away from the center of the rotary table to facilitate contact between the grinding wheel and the minimally invasive infusion needle.

[0016] Preferably, the drilling mechanism includes a drilling support, an electrical discharge drilling assembly, and a drilling lifting drive device that drives the electrical discharge drilling assembly to slide up and down along the drilling support. The electrical discharge drilling assembly includes a drilling frame and a working electrode, and the working electrode is slidably connected to the drilling frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This invention integrates the functions of needle loading, clamping, indexing and transfer, grinding, drilling and needle unloading into the same rotary platform, realizing continuous production from loading and processing to unloading, which greatly improves production efficiency. The minimally invasive injection needle completes the grinding and drilling of the three facets in one rotary cycle without intermediate transfer or secondary clamping, shortening the processing cycle. Moreover, the grinding mechanism and the drilling mechanism share the same indexing system, and the positioning of all processing surfaces is based on the same indexing reference, eliminating the cumulative error between different processes and ensuring the positional accuracy and angle consistency of the three facets and corresponding through holes. (2) The present invention uses the mechanical contact between the regular triangular prism indexing stop and the indexing protrusion to achieve 120° automatic indexing. The structure is simple and intuitive, the operation is reliable, the manufacturing cost is low, and it avoids the complex sector gear and indexing gear transmission system in the prior art. It is easy to maintain. Through the cooperation of the roller and the arc-shaped guide rail, it forms an auxiliary support for the clamping needle shaft after indexing, which improves the stability of the indexing process. (3) The needle clamping mechanism of the present invention is set with a single interval, which can independently clamp, independently index and independently process a single needle body. It is suitable for scenarios that require flexible adjustment, such as R&D verification, process debugging and small batch customization, and solves the problem that existing multi-needle parallel equipment cannot debug a single needle. (4) The present invention uses the cooperation between the needle ring and the needle roller. The needle ring rotates to receive the needle body, and the needle roller rotates in the opposite direction to drive the needle brush to push the needle body that has not fallen into the needle feeding groove into the groove. This effectively avoids the phenomenon of empty groove and ensures the continuity of material supply. The design of the double baffle plate facilitates the replenishment of material in the storage area, and the replenishment rate can be controlled by adjusting the opening. The structure is simple and practical. (5) The needle feeding mechanism of the present invention adopts a two-stage pushing structure, in which the first needle-pushing cylinder drives the needle support seat to approach as a whole and the second needle-pushing cylinder drives the pin-electrode to push the needle body into the positioning groove. The needle feeding mechanism adopts an elastic transition connection structure, which realizes flexible pushing. When the pushing resistance is abnormal, the spring can absorb the excessive pushing force to avoid rigid impact damage to the precision needle tip. The flexible compensation effect of the spring can automatically adapt to the assembly error and ensure that the needle body is accurately positioned. This design significantly improves the success rate of needle feeding and reduces the scrap rate. It is especially suitable for high-precision automated processing of micro needles. Finally, with the precise pressing of the clamp tail by the needle feeding clamping cylinder, the needle body is smoothly and accurately transferred from the needle support groove to the clamp positioning groove. (6) The needle-feeding mechanism of the present invention adopts a dual rotating structure of turntable and needle-feeding movable seat, and with the radial sliding of the moving seat, it realizes the flexible movement of needle-feeding pneumatic gripper in a limited space with multiple degrees of freedom, and can accurately align with the needle clamping mechanism of different work positions to quickly and without damage remove finished needles. (7) The grinding mechanism of the present invention achieves continuous stepless adjustment of the overall tilt angle of the grinding component through the innovative combination of the slope slider and the dovetail groove guide mechanism. The operator can quickly and accurately adjust the slope of the edge to adapt to the processing of micro-invasive injection needles of different specifications and different cutting edge angles, which significantly improves the versatility and flexible manufacturing capability of the device. Two drive motors drive two slide plates through eccentric parts to achieve two-dimensional motion in the plane. Combined with the swing arm type lifting adjustment, the grinding wheel can be precisely fine-tuned in three dimensions. The adjustment resolution is high and the stability is good, which can meet the high-precision processing requirements of the small size of the micro-invasive needle tip. Attached Figure Description

[0018] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the rotary table and the boss in this invention; Figure 3 This is a schematic diagram of the distribution structure of the needle clamping mechanism, indexing stop, and indexing protrusion of the present invention; Figure 4 This is a cross-sectional view of the needle clamping mechanism of the present invention; Figure 5 This is a schematic diagram of the needle-attaching mechanism of the present invention; Figure 6 This is a schematic diagram of the needle-attaching mechanism of the present invention from another perspective; Figure 7 For the present invention Figure 6 Schematic diagram of the internal structure of the middle needle box and upper needle holder; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle; Figure 9 This is a schematic diagram of the needle ring structure of the present invention; Figure 10 This is a schematic diagram of the structure of the pusher block, the ejector pin, and the pin support of the present invention; Figure 11 For the present invention Figure 10 A schematic diagram of the cross-sectional structure; Figure 12 This is a schematic diagram of the needle-feeding mechanism of the present invention; Figure 13This is a schematic diagram of the grinding mechanism of the present invention from one perspective; Figure 14 This is a schematic diagram of the grinding mechanism of the present invention from another perspective; Figure 15 For the present invention Figure 14 A schematic diagram of the structure after removing the protective cover and grinding wheel; Figure 16 For the present invention Figure 15 Enlarged structural diagram at point B; Figure 17 This is a cross-sectional view of the grinding mechanism of the present invention; Figure 18 This is a schematic diagram of the drilling mechanism of the present invention; In the diagram: 1. Fixed base, 2. Rotary disk, 3. Boss, 4. Needle clamping mechanism, 401. Needle clamping seat, 402. Needle clamping shaft, 403. Indexing stop, 404. Roller, 405. Positioning groove, 406. Clamping groove, 407. Fixed shaft, 408. Clamp, 409. First spring, 5. Needle feeding mechanism, 501. Needle feeding seat, 502. Needle box, 503. Needle drop port, 504. Needle support seat, 5041. Needle support groove, 505. Needle ring, 5051. Needle feed groove, 506. Needle feed motor, 507. Needle guide roller, 508. Needle brush, 509, drive gear, 5010, driven gear, 5011, baffle plate, 5012, storage area, 5013, movable plate, 5014, first needle pusher cylinder, 5015, ejector pin, 5016, needle pusher block, 5017, second needle pusher cylinder, 5018, guide rod, 5019, second spring, 5020, transition plate, 5021, slot, 6, needle lowering mechanism, 601, needle lowering base, 602, movable seat, 603, turntable, 604, needle lowering movable seat, 605, needle lowering cylinder, 606, needle clamping cylinder 7. Claw, 701. Grinding mechanism, 702. Grinding base, 703. Movable seat, 704. First rotating shaft, 705. Auxiliary clamping seat, 7041. Upper clamping plate, 7042. Lower clamping plate, 7043. Lifting cylinder, 7044. Pin slot, 7045. Pin avoidance slot, 7046. Clearance slot, 705. First sliding plate, 706. Second sliding plate, 707. Grinding wheel, 708. First drive motor, 709. Second drive motor, 7010. First eccentric component, 7011. Second eccentric component, 7012. Support rod, 7013. 7014. Swing arm; 7015. Linear actuator; 7016. Second rotating shaft; 7017. Lead screw; 7018. Base slider; 7019. Drive component; 7020. Guide groove; 7021. Guide protrusion; 7022. Grinding motor; 8. Drilling mechanism; 801. Drilling support; 802. Drilling frame; 803. Working electrode; 804. Drilling lifting drive device; 9. Arc guide rail; 901. Ramp surface; 10. Indexing protrusion; 11. Upper needle opening cylinder; 12. Collection box; 13. Minimally invasive infusion needle; 14. Protective cover. Detailed Implementation

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

[0021] In the description of this invention, it should be understood that the terms "middle", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.

[0023] like Figure 1 As shown, a minimally invasive infusion needle three-sided grinding and drilling integrated processing device includes a fixed base 1, a rotary table 2, a rotary motor (not shown in the figure), an upper needle mechanism 5, a lower needle mechanism 6, and three sets of processing mechanisms. The upper end of the fixed base is provided with a boss 3. The rotary table is rotatably connected to the top of the boss and driven by the rotary motor. At least one radially arranged needle clamping mechanism 4 is provided at the edge of the rotary table. The upper needle mechanism 5, the three sets of processing mechanisms, and the lower needle mechanism 6 are arranged sequentially and at intervals along the outer periphery of the rotary table. Each set of processing mechanisms includes a grinding mechanism 7 and a drilling mechanism 8 arranged sequentially, forming eight processing stations. The process flow of the eight stations is as follows: upper needle mechanism (station 1), first-sided grinding mechanism (station 2), first-sided drilling mechanism (station 3), second-sided grinding mechanism (station 4), second-sided drilling mechanism (station 5), third-sided grinding mechanism (station 6), third-sided drilling mechanism (station 7), and lower needle mechanism (station 8). There are 8 needle clamping mechanisms, which correspond to 8 workstations on the fixed base.

[0024] Combination Figures 2 to 4As shown, eight needle clamping mechanisms are evenly distributed in a circular array. Each needle clamping mechanism 4 includes a needle clamping seat 401 and a needle clamping assembly. The needle clamping seat is connected to a rotary table and fixedly attached to the lower edge of the rotary table. The needle clamping assembly includes a needle clamping shaft 402 rotatably connected to the needle clamping seat via a bearing, and a regular polygonal prism-shaped indexing block 403 coaxially fixed to one end of the needle clamping shaft near the central axis of the rotary table. The other end of the needle clamping shaft is provided with a clamping part for clamping the minimally invasive infusion needle. The clamping part includes a positioning groove 405 at the end of the needle clamping shaft, a clamping groove 406 adjacent to the positioning groove, and a clamp 408 rotatably connected to the needle clamping shaft via a fixed shaft 407. The jaws of the clamp correspond to the clamping groove, and a first spring 409 connects the tail of the clamp to the needle clamping shaft, causing the jaws to tend to close into the clamping groove. During operation, press the tail of the clamp 408 to open the jaws, allowing the minimally invasive infusion needle to be placed into the positioning groove 405; release the tail, and the jaws will return to their original position under the action of the first spring 409, clamping the needle body.

[0025] Combination Figures 1 to 3 As shown, the upper needle mechanism 5, three sets of processing mechanisms, and the lower needle mechanism 6 are arranged sequentially and at intervals along the outer circumference of the rotary table. Three indexing protrusions 10 are fixedly provided on the boss, and the three indexing protrusions are respectively located on the downstream side of each set of processing mechanisms, and on the downstream side of the drilling mechanism in each set of processing mechanisms. When the indexing stop 403 rotates with the rotary table 2 to abut against any of the indexing protrusions 10, driven by the continued rotation of the rotary table 2, the indexing stop 403 is forced to rotate around its axis, and drives the clamping needle 402 and the held minimally invasive infusion needle to rotate synchronously by 120°, completing one automatic indexing. To further improve the stability of the indexing process, rollers 404 are rotatably connected at the three apex points on the side of the indexing stop 403 away from the clamping needle axis 402. An arc-shaped guide rail 9 is provided on the boss 3 between every two indexing protrusions 10, and the starting end of the arc-shaped guide rail 9 is a ramp surface 901. After the indexing stop 403 completes a 120° rotation, the roller 404 enters the ramp surface of the arc-shaped guide rail 9 and rolls with it, providing auxiliary support for the indexing stop 403 and the needle clamp shaft 402, preventing them from shaking during subsequent idling.

[0026] like Figures 5 to 8 As shown, the needle feeding mechanism 5 includes a needle holder 501, on which a needle box 502, a needle feeding mechanism, and a needle pushing mechanism are mounted. The needle box 502 is a hollow structure with an open top; the upper section is a cuboid, and the lower section has a cavity that is smaller at the bottom and larger at the top. Two baffle plates 5011 are provided between the upper and lower sections of the needle box 502. The two baffle plates 5011 are inserted into slots 5021 on opposite side walls of the needle box 502, and are stacked one on top of the other. The opening state between the two baffle plates 5011 can be changed by pulling outward or pushing inward. The area above the baffle plates 5011 is a storage area. When there are no needles in the needle box, replenishment can be performed, or a rated replenishment rate can be set for continuous needle replenishment.

[0027] The needle feeding mechanism is located on the lower inner side of the needle box 502. The needle feeding mechanism includes a needle ring 505 and a needle feeding motor 506. (Combined) Figure 9 As shown, the needle ring 505 is a horizontally positioned cylindrical structure rotatably mounted within the needle box 502. Ten needle feeding slots 5051, parallel to its central axis, are evenly distributed on its outer circumference. Above the needle ring is a needle-feeding roller 507. Ten sets of needle-feeding brushes 508 are arranged in a circular array around the outer circumference of the needle-feeding roller 507. The needle-feeding brushes cooperate with the needle ring, and their positions correspond one-to-one with the needle feeding slots. One end of the needle-feeding roller 507 is connected to a driving gear 509, which meshes with a driven gear 5010 located at one end of the needle ring 505. The driving gear 509 is connected to a needle feeding motor 506. When the needle ring rotates to receive a needle, the needle-feeding roller rotates in the opposite direction, driving the needle-feeding brushes to push any needles that have not yet fallen into the needle feeding slots into the slots, thus preventing empty slots from appearing.

[0028] The needle box 502 has a needle drop port 503 at the bottom. A needle support seat 504 is located directly below the needle drop port. The needle support seat 504 has a needle support groove 5041 that radially passes through the needle support seat. The needle pushing mechanism cooperates with the needle support seat to push the minimally invasive infusion needle in the needle support groove into the clamping part on the needle clamping shaft.

[0029] Combination Figures 5 to 8 , Figure 10 and Figure 11As shown, the needle-pushing mechanism includes a movable plate 5013, a first needle-pushing cylinder 5014, a needle-pushing block 5015, a push-pin component 5016, and a second needle-pushing cylinder 5017. A needle support seat 504 is fixedly connected to the movable plate 5013, and the movable plate 5013 is slidably connected to the upper needle seat 501. The first needle-pushing cylinder 5014 is fixedly connected to the upper needle seat 501, and its output shaft is connected to the movable plate 5013, used to drive the movable plate 5013 and the needle support seat 504 to move towards or away from the center of the rotary table 2. The needle-pushing block 5015 is slidably connected to the movable plate 5013. A guide rod 5018 is connected to the side of the needle-pushing block away from the center of the rotary table 2. A second spring 5019 is sleeved on the guide rod 5018, and a transition plate 5020 is slidably connected to it. The second spring 5019 is located between the transition plate 5020 and the needle-pushing block 5015. The second push needle cylinder 5017 is fixedly connected to the movable plate 5013, and its output shaft is connected to the transition plate 5020 to drive the push needle block 5015 to slide relative to the movable plate 5013. The ejector needle 5016 is located on the side of the push needle block 5015 near the center of the rotary table 2, and is coaxially arranged with the needle support groove 5041 on the needle support seat 504. The upper needle seat 501 is provided with an upper needle opening cylinder 11 on the side near the center of the rotary table 2, and its output shaft is arranged upward to press the tail of the clamp 408 to open the jaws. The push needle mechanism adopts an elastic transition connection structure, that is, the second push needle cylinder is flexibly connected to the push needle block 5015 through the transition plate 5020, the guide rod 5018 and the second spring 5019. This design allows the driving force of the second push needle cylinder to be buffered by the second spring before being transmitted to the ejector needle. When the pushing resistance increases abnormally, the second spring is compressed to absorb the excessive pushing force, avoiding rigid impact damage to the minimally invasive infusion needle. Meanwhile, the flexible compensation function of the second spring can automatically adapt to the slight coaxiality deviation between the needle support groove and the positioning groove of the clamping part, ensuring that the needle body enters the positioning groove smoothly and accurately.

[0030] The working principle of the needle feeding mechanism 5 is as follows: The needle feeding motor 506 starts, driving the needle ring 505 to rotate clockwise, while simultaneously driving the needle-dispensing roller 507 to rotate counterclockwise via gear transmission. The needle feeding groove 5051 on the needle ring 505 receives the needles falling from the needle box 502, and the needle-dispensing brush 508 pushes the needles that have not fallen into the needle feeding groove 5051 into the groove, avoiding empty grooves. When the needle feeding groove 5051 carrying the needles rotates to the bottom, the needles fall from the needle drop outlet 503 into the needle support groove 5041 of the needle support seat 504. The output shaft of the needle opening cylinder 11 extends, pressing against the tail of the clamp 408, causing the jaws to open. The first needle pushing cylinder 5014 is activated, driving the movable plate 5013 and the needle support seat 504 to move closer to the needle clamping mechanism 4, so that the needle support groove 5041 is aligned with the positioning groove 405 on the needle clamping shaft 402. The second pusher cylinder 5017 actuates, its output shaft pushing the transition plate 5020 forward. The transition plate 5020 transmits pushing force to the pusher block 5015 through the second spring 5019. Due to the buffering effect of the second spring 5019, the pusher block 5015 and the ejector pin 5016 push the needle body into the positioning groove 405 at a gentle and smooth speed. If slight resistance is encountered during the pushing process (such as slight misalignment between the needle body and the positioning groove), the second spring 5019 is slightly compressed, giving the ejector pin 5016 a slight floating ability to adaptively adjust the pushing posture and ensure the needle body is smoothly inserted. After the needle is pushed into place, the second spring 5019 returns to its original state, completing one complete gentle pushing process. The needle opening cylinder 11 resets, and the clamp 408 resets under the action of the first spring 409, clamping the needle body. The first pusher cylinder 5014 and the second pusher cylinder 5017 reset, completing one needle insertion cycle. The needle feeding mechanism adopts a two-stage pushing structure: the first needle-pushing cylinder drives the needle support seat to move closer as a whole, and the second needle-pushing cylinder drives the pin-ejector to push the needle body into the positioning groove. Combined with the precise pressing of the clamp tail by the needle opening cylinder, the needle body is smoothly and accurately transferred from the needle support groove to the clamp positioning groove, avoiding damage to the needle body.

[0031] like Figure 12As shown, the needle-feeding mechanism 6 includes a needle-feeding base 601, a movable base 602, a turntable 603, and a movable needle-feeding seat 604. The movable base 602 is slidably connected to the needle-feeding base 601 and is connected to a screw-nut mechanism (existing technology, not described in detail here, but shown in the figure) that drives its sliding. The turntable 603 is rotatably connected to the upper end of the movable base 602 and is driven by a first rotary motor (not shown in the figure). The movable needle-feeding seat 604 is rotatably connected to the upper part of the other end of the turntable 603 and is driven by a second rotary motor (not shown in the figure). Through the coordinated drive of the first and second rotary motors, the needle-clamping gripper 606 can flexibly adjust its posture within a limited space. A needle-feeding cylinder 605 is mounted on the movable needle-feeding seat 604, and the output shaft of the needle-feeding cylinder 605 is connected to the needle-clamping gripper 606. Below the needle gripper 606 is a needle-opening cylinder (not shown in the figure, connected to the upper needle opening cylinder), whose output axis is set upward to press the tail of the gripper 408, causing the jaws to open. A collection box 12 is provided on one side of the needle-down mechanism. The collection box is located on a fixed base, and the needle-down mechanism places the finished needles uniformly into the collection box.

[0032] The working principle of the needle-feeding mechanism 6 is as follows: The rotary table 2 rotates the needle-clamping mechanism 4, which holds the finished needle, to the needle-feeding position. The output shaft of the needle-feeding opening cylinder extends, pressing against the tail of the clamp 408, causing the jaws to open. The first and second rotary motors work together to adjust the posture of the turntable 603 and the needle-feeding movable seat 604, so that the needle-clamping gripper 606 aligns with the finished needle in the positioning groove 405. The output shaft of the needle-feeding cylinder 605 extends, and the needle-clamping gripper 606 moves downward to clamp the needle. The screw and nut mechanism drives the movable seat 602 to slide radially outward, pulling the needle out of the positioning groove 405. The needle-feeding opening cylinder resets, and the clamp 408 resets under the action of the first spring 409. The needle-feeding cylinder 605 resets, the needle-clamping gripper 606 releases, and the finished needle is placed into the collection box 11, completing the needle-feeding action.

[0033] like Figures 13 to 17As shown, the grinding mechanism 7 includes a grinding base 701 and a movable seat 702. The side of the movable seat away from the rotary table is rotatably connected to the grinding base via a first rotating shaft 703. The movable seat is equipped with a grinding assembly. The grinding base is equipped with an auxiliary clamping seat 704 for fixing the workpiece during grinding and a tilt adjustment assembly for driving the movable seat to rotate around the first rotating shaft to adjust the tilt angle of the movable seat. The tilt adjustment assembly includes a lead screw 7016, a base slider 7017, and a driving component 7018. The lead screw is rotatably connected to the grinding base along the radial direction of the rotary table, and one end of it is connected to an adjustment knob (or a servo motor drive) as the driving component. The base slider is threadedly connected to the lead screw and slidably connected to the grinding base. The upper part of the base slider is provided with an inclined slope surface and a dovetail guide groove 7019, and the bottom of the movable seat is provided with a dovetail guide protrusion 7020 that slidably engages with the guide groove. When the adjusting knob 7018 drives the lead screw 7016 to rotate, the base slider 7017 moves radially. Its sloping surface pushes the movable seat 702 to rotate around the first rotating axis 703 through the guide protrusion 7020, thereby realizing continuous stepless adjustment of the tilt angle of the movable seat 702. This angle is the processing angle of the grinding wheel 707 relative to the edge of the minimally invasive infusion needle, which can adapt to the cutting edge slope requirements of needles of different specifications.

[0034] The grinding assembly includes a first slide plate 705, a second slide plate 706, a grinding wheel 707, and a grinding motor 7021 for driving the grinding wheel to rotate, all mounted on a movable base. The first slide plate is slidably connected to the movable base via a first slide rail and can move radially along the rotary table. The second slide plate is slidably connected to the first slide plate via a second slide rail and can move in a direction perpendicular to the radial direction. The grinding wheel 707 is mounted on the output shaft of the grinding motor 7021, which is mounted on the second slide plate.

[0035] Combination Figure 13 and Figure 17 As shown, this embodiment employs an eccentric wheel drive to achieve precise fine-tuning of the first slide plate 705 and the second slide plate 706. A first drive motor 708 and a second drive motor 709 are mounted on the movable base 702. The output shaft of the first drive motor 708 is connected to a first eccentric component 7010, which is hinged to the first slide plate 705. When the first drive motor 708 rotates, the first eccentric component drives the first slide plate to reciprocate slightly in the radial direction. The output shaft of the second drive motor 709 is connected to a second eccentric component 7011, which is hinged to the second slide plate 706. When the second drive motor 709 rotates, the second eccentric component drives the second slide plate 706 to reciprocate slightly in the vertical radial direction. Through the coordinated control of the two drive motors, precise positioning of the grinding wheel 707 in a two-dimensional position within the horizontal plane can be achieved.

[0036] Combination Figure 13 , 14As shown in Figures 15 and 17, the second slide plate is equipped with a lifting adjustment assembly for adjusting the height of the grinding wheel. The lifting adjustment assembly includes a support rod 7012, a swing arm 7013, and a linear actuator 7014. The support rod is vertically fixed to the upper end of the second slide plate, and one end of the swing arm is rotatably connected to the top of the support rod via a second rotating shaft 7015. A grinding motor 7021 and a grinding wheel 707 are mounted on the other end of the swing arm. A protective cover 9 is provided on the outer side of the grinding wheel to reduce debris or sparks. The linear actuator is hinged between the second slide plate 706 and the other end of the swing arm 7013. It can be a miniature cylinder, an electric push rod, or a lead screw stepper motor. In this embodiment, a lead screw stepper motor is used to achieve precise height adjustment, meeting the high-precision machining requirements of the tiny size of the micro-invasive needle tip. When the linear actuator 7014 extends or retracts, it drives the swing arm 7013 to swing up and down around the second rotating shaft 7015, thereby adjusting the distance between the grinding wheel 707 and the workpiece, achieving precise control of the grinding thickness.

[0037] Combination Figure 15 and Figure 16 As shown, the auxiliary clamping seat 704 includes a fixedly mounted upper clamping plate 7041 and a lower clamping plate 7042 that corresponds to and cooperates with the upper clamping plate 7041. A lifting cylinder 7043 is connected to the lower end of the lower clamping plate 7042, and a V-shaped needle-holding groove 7044 is provided on the lower clamping plate 7042. In this embodiment, the lower clamping plate is made of a metal plate with a certain elasticity that allows for slight deformation, and one end of the metal plate is fixed to the auxiliary clamping seat with screws. A needle-avoiding groove 7045 is provided on the side of the auxiliary clamping seat 704 near the center of the rotary table 2, and a clearance groove 7046 is provided on the side of the upper clamping plate 7041 away from the center of the rotary table 2. During operation, the needle clamping mechanism 4 carries the minimally invasive infusion needle 8 and rotates with the rotary table 2 to the grinding station. The needle body enters the auxiliary clamping seat 704 from the needle-avoiding groove 7045 and reaches directly above the needle-holding groove 7044. The lifting cylinder 7043 actuates, driving the lower clamping plate 7042 to deform upwards, lifting the needle body towards the upper clamping plate 7041 and clamping it within the needle-holding groove 7044. At this time, the clamp 408 remains in a holding state, forming a double fixation of the needle body together with the auxiliary clamping seat 704, significantly improving the rigidity and stability of the grinding process. The clearance groove 7046 provides sufficient movement space for the grinding wheel 707, enabling it to contact the edge of the needle body to be processed.

[0038] like Figure 18As shown, the drilling mechanism 8 includes a drilling support 801, an electrical discharge drilling assembly, and a drilling lifting drive device 804 that drives the electrical discharge drilling assembly to slide up and down along the drilling support. The drilling lifting drive device adopts a screw and nut mechanism to drive the electrical discharge drilling assembly to slide up and down along the slide rail. The specific structure will not be described in detail. The electrical discharge drilling assembly includes a drilling frame 802 and a working electrode 803, which is slidably connected to the drilling frame. In this embodiment, the working electrode of the electrical discharge is driven to move up and down along the drilling frame by another set of screw and nut mechanisms. During the drilling operation, the working electrode is the electrode, and the workpiece (i.e., the triangular needle body) is the negative electrode. The working electrode moves up and down continuously to perform pulsed spark discharge on the workpiece, eroding the metal and achieving the purpose of drilling. This method is prior art and will not be described in detail here. It is the same as the working principle in the invention patent (a triangular needle electrical discharge processing device) with the existing authorized publication number CN118636024B.

[0039] The specific workflow of this invention is as follows: S1, Needle loading: The minimally invasive infusion needles to be processed are placed in batches into the storage area 5012 of the needle box 502. The two baffles 5011 are in the open state. The needle body falls to the lower section of the needle box 502 under the action of gravity. According to the working principle of the needle loading mechanism described in the embodiment, the needle body is automatically fed into the positioning groove 405 of the needle clamping mechanism 4 and clamped. At this time, the clamp is located at the bottom of the needle clamping mechanism. S2, First facet grinding: Start the rotary motor to drive the rotary table 2 to rotate, and rotate the needle clamping mechanism 4 to the first grinding station (station 2). Adjust the tilt adjustment component and set a suitable facet slope. Adjust the first drive motor 708, the second drive motor 709 and the linear driver 7014 so that the grinding wheel 707 is aligned with the first facet of the needle body. The lifting cylinder 7043 is activated, and the lower clamping plate 7042 rises to assist in clamping the needle body. The grinding motor 7021 is started, and the grinding wheel 707 rotates at high speed to perform grinding. After completion, the lifting cylinder 7043 is reset, and the lower clamping plate 7042 descends to release the needle body. S3, Drilling the first facet: Start the rotary motor and drive the rotary table 2 to rotate, and rotate the needle clamping mechanism 4 to the first drilling station (station 3). The drilling mechanism 8 drills the first facet after grinding. Since the initial needle body to be processed is a hollow structure with one end open, it can be connected to its interior after drilling. S4, First automatic indexing: The rotary table 2 continues to rotate, and the indexing stop 403 contacts the first indexing protrusion 10. Driven by the rotary table 2, the indexing stop 403 is forced to rotate 120°, which drives the needle clamping shaft 402 and the needle body to rotate synchronously, and rotates the second edge to the processing position. After the indexing is completed, the roller 404 enters the arc guide rail 9 and transitions smoothly. S5, Second face grinding: The needle body rotates to the second grinding station (station 4) to complete the grinding of the second face; S6, Drilling the second facet: The needle body rotates to the second drilling station (station 5) to complete the drilling of the second facet; S7, Second automatic indexing: The rotary table 2 continues to rotate, the indexing stop 403 contacts the second indexing protrusion 10, and is forced to rotate 120° again, turning the third facet to the processing position; S8, Grinding the third facet: The needle body rotates to the third grinding station (station 6) to complete the grinding of the third facet; S9, Drilling the third facet: The needle body rotates to the third drilling station (station 7) to complete the drilling of the third facet; S10, Third automatic indexing: The rotary table 2 continues to rotate, the indexing stop 403 contacts the third indexing protrusion 10, and is forced to rotate 120° again, turning the first edge to the machining position. At this time, the clamp is located at the bottom of the needle clamping mechanism 4. S11, Needle insertion: According to the needle insertion working principle described in the embodiment, the finished needle is taken out from the needle clamping mechanism 4; S12, Cyclic processing: Repeat S2-S11 to achieve continuous automated production.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A three-sided grinding and drilling integrated processing device for minimally invasive infusion needles, comprising a fixed base, a rotary table, a rotary motor, an upper needle mechanism, an lower needle mechanism, and three sets of processing mechanisms, characterized in that: The upper end of the fixed base is provided with a boss. The rotary disk is rotatably connected to the top of the boss and driven by a rotary motor. At least one radially arranged needle clamping mechanism is provided at the edge of the rotary disk. The needle clamping mechanism includes a needle clamping seat and a needle clamping assembly. The needle clamping seat is connected to the rotary disk. The needle clamping assembly includes a needle clamping shaft rotatably connected to the needle clamping seat and an indexing block in the shape of a regular polygonal prism coaxially fixed to one end of the needle clamping shaft. The other end of the needle clamping shaft is provided with a clamping part for clamping the minimally invasive infusion needle. The upper needle mechanism, three sets of processing mechanisms, and lower needle mechanism are arranged sequentially and spaced along the outer periphery of the rotary disk. Each set of processing mechanisms includes sequentially arranged... The grinding and drilling mechanisms include a boss with three indexing protrusions fixedly mounted on the boss. The three indexing protrusions are respectively located on the downstream side of each processing mechanism. Rollers are rotatably connected to the three apex points on the side of the indexing block away from the needle clamping shaft. An arc-shaped guide rail is provided between every two indexing protrusions on the boss. The starting end of the arc-shaped guide rail is a ramp surface. When the indexing block rotates with the rotary table to abut against any of the indexing protrusions, the indexing block is forced to drive the needle clamping shaft to rotate 120°. After the indexing block completes the indexing rotation, the rollers and the arc-shaped guide rail roll together to provide auxiliary support for the indexing block and the needle clamping shaft.

2. The integrated processing device for three-sided grinding and drilling of a minimally invasive infusion needle as described in claim 1, characterized in that: The clamping part includes a positioning groove at the end of the needle shaft, a clamping groove adjacent to the positioning groove, and a clamp rotatably connected to the needle shaft via a fixed shaft. The jaws of the clamp correspond to the clamping groove, and a first spring is connected between the tail of the clamp and the needle shaft, so that the jaws tend to close into the clamping groove.

3. The integrated processing device for three-sided grinding and drilling of minimally invasive infusion needles as described in claim 1, characterized in that: The needle feeding mechanism includes a needle holder, on which a needle box, a needle feeding mechanism, and a needle pushing mechanism are provided. The needle feeding mechanism is located on the lower inner side of the needle box. The bottom of the needle box has a needle drop port, and directly below the needle drop port is a needle support seat with a needle support groove. The needle pushing mechanism cooperates with the needle support seat to push the minimally invasive infusion needle in the needle support groove into the clamping part on the needle clamping shaft. Two baffles are provided between the upper and lower sections of the needle box. The two baffles are inserted into slots on opposite side walls of the needle box and are stacked on top of each other. The opening state between the two baffles can be changed by pulling outward or pushing inward. Above the baffles is a storage area. A needle opening cylinder is provided on the side of the needle feeding mechanism near the center of the rotary table. The output axis of the needle opening cylinder is set upward to press the clamping part to open the clamping state.

4. The integrated processing device for three-sided grinding and drilling of minimally invasive infusion needles as described in claim 3, characterized in that: The needle feeding mechanism includes a needle ring and a needle feeding motor. The needle ring is a horizontally arranged cylindrical structure and is rotatably installed inside the needle box. At least two needle feeding slots are evenly distributed on its outer circumference, parallel to its central axis. A needle-feeding roller is provided above the needle ring. The outer circumference of the needle-feeding roller is arranged in a circular array with needle-feeding brushes corresponding to the number of needle feeding slots. The needle-feeding brushes cooperate with the needle ring. One end of the needle-feeding roller is connected to a drive gear. The drive gear meshes with a driven gear located at one end of the needle ring. The drive gear is connected to the needle feeding motor. When the needle ring rotates to receive the needle body, the needle-feeding roller rotates in the opposite direction to drive the needle-feeding brushes to push the needle body that has not fallen into the needle feeding slot into the slot.

5. The integrated processing device for three-sided grinding and drilling of minimally invasive infusion needles as described in claim 3, characterized in that: The needle-pushing mechanism includes a movable plate, a first needle-pushing cylinder, a pin ejector, a needle-pushing block, and a second needle-pushing cylinder. The needle support seat is fixedly connected to the movable plate, and the movable plate is slidably connected to the upper needle seat. The first needle-pushing cylinder is fixedly connected to the upper needle seat, and its output shaft is connected to the movable plate. The needle-pushing block is slidably connected to the movable plate. A guide rod is connected to the side of the needle-pushing block away from the center of the rotary table. A second spring is sleeved on the guide rod, and a transition plate is slidably connected to it. The second spring is located between the transition plate and the needle-pushing block. The second needle-pushing cylinder is fixedly connected to the movable plate, and its output shaft is connected to the transition plate. The pin ejector is located on the side of the needle-pushing block near the center of the rotary table and is coaxially arranged with the needle support groove on the needle support seat.

6. The integrated processing device for three-sided grinding and drilling of minimally invasive infusion needles as described in claim 1, characterized in that: The needle-feeding mechanism includes a needle-feeding base, a movable base, a turntable, and a movable needle-feeding seat. The movable base is slidably connected to the needle-feeding base and is connected to a screw and nut mechanism that drives its sliding. The turntable is rotatably connected to the upper end of the movable base and is driven by a first rotary motor. The movable needle-feeding seat is rotatably connected to the upper part of the other end of the turntable and is driven by a second rotary motor. A needle-feeding cylinder is installed on the movable needle-feeding seat. The output shaft of the needle-feeding cylinder is connected to a needle-clamping gripper. A needle-feeding clamping cylinder is provided on the side of the needle-feeding mechanism near the center of the rotary table. The output shaft of the needle-feeding clamping cylinder is arranged upward to press the clamping part to open the clamping state.

7. The integrated processing device for three-sided grinding and drilling of a minimally invasive infusion needle as described in claim 1, characterized in that: The grinding mechanism includes a grinding base and a movable seat. The movable seat is rotatably connected to the grinding base via a first rotating shaft. The movable seat is equipped with a grinding assembly. The grinding base is equipped with an auxiliary clamping seat for fixing the workpiece during grinding and an angle adjustment assembly for driving the movable seat to rotate around the first rotating shaft to adjust the tilt angle of the movable seat. The angle adjustment assembly includes a lead screw, a base slider, and a driving component. The lead screw is rotatably connected to the grinding base along the radial direction of the rotary table and is driven to rotate by the driving component. The base slider is threadedly connected to the lead screw and slidably connected to the grinding base. The upper part of the base slider is provided with an inclined slope surface and a guide groove. The bottom of the movable seat is provided with a guide protrusion that slidably engages with the guide groove. When the lead screw rotates and drives the base slider to move, the slope surface pushes the movable seat to rotate around the first rotating shaft.

8. The integrated processing device for three-sided grinding and drilling of a minimally invasive infusion needle as described in claim 7, characterized in that: The polishing assembly includes a first slide plate, a second slide plate, a polishing wheel, and a polishing motor for driving the polishing wheel to rotate, all mounted on a movable base. The first slide plate is movable relative to the movable base along the radial direction of the rotary table, and the second slide plate is movable relative to the first slide plate in a direction perpendicular to the radial direction. The polishing wheel is mounted on the second slide plate. The movable base is equipped with a first drive motor and a second drive motor. The output shaft of the first drive motor is connected to a first eccentric member, which is hinged to the first slide plate to drive its movement. The output shaft of the second drive motor is connected to a second eccentric member, which is hinged to the second slide plate to drive its movement. The second slide plate is equipped with a lifting adjustment assembly for adjusting the height of the polishing wheel.

9. The integrated processing device for three-sided grinding and drilling of a minimally invasive infusion needle as described in claim 8, characterized in that: The lifting and adjusting assembly includes a support rod, a swing arm, and a linear actuator. The support rod is mounted on the second slide plate. One end of the swing arm is rotatably connected to the top of the support rod via a second rotating shaft, and the other end is connected to a grinding wheel. The linear actuator is connected between the second slide plate and the swing arm to drive the swing arm to swing around the second rotating shaft.

10. The integrated processing device for three-sided grinding and drilling of a minimally invasive infusion needle as described in claim 7, characterized in that: The auxiliary clamping seat includes an upper clamping plate and a lower clamping plate that cooperates with the upper clamping plate. The lower end of the lower clamping plate is connected to a lifting cylinder. The lower clamping plate is provided with a needle-holding groove for accommodating the minimally invasive infusion needle. The auxiliary clamping seat is provided with a needle-avoiding groove on the side near the center of the rotary table for the needle clamping mechanism to carry the minimally invasive infusion needle into the rotary table. The upper clamping plate is provided with a clearance groove on the side away from the center of the rotary table to facilitate contact between the grinding wheel and the minimally invasive infusion needle.

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