Medical sampling needle nozzle end face polishing equipment

Abstract

The application relates to the field of medical instrument processing, in particular to a medical sampling needle nozzle end face polishing device, which comprises a supporting table, a linear driving assembly arranged on the supporting table, a clamping mechanism comprising a sleeving piece and a clamping assembly, the sleeving piece being fixed on the linear driving assembly, one end of the clamping assembly being fixed on the sleeving piece, and the other end clamping a sampling needle nozzle end, and a sanding assembly comprising a first driving piece and a sanding wheel, the first driving piece being arranged on the lower end face of the supporting table, and the driving end penetrating through the upper end face of the supporting table to connect the sanding wheel, the clamping assembly clamping the sampling needle nozzle end moving to the sanding wheel to perform reciprocating linear motion under the driving of the linear driving assembly, so that the end face of the sampling needle nozzle end abutting against the sanding wheel is polished. The application can effectively automatically polish the end face of the medical sampling needle nozzle, improve the polishing efficiency and quality, and thus improve the use performance and sampling effect of the medical sampling needle.

Description

Technical Field

[0001] This application relates to the field of medical device processing technology, and in particular to a polishing device for the end face of a medical sampling needle nozzle. Background Technology

[0002] In the field of medical testing, sampling needles are key instruments in automated analytical equipment for sample aspiration, transfer, and distribution. They are typically designed as hollow, slender tubular structures, with the tip face directly contacting the sample liquid during sampling. The surface quality of this tip face is crucial; the presence of microscopic burrs, unevenness, or poor roughness will lead to droplet residue and cross-contamination, severely affecting sampling accuracy and equipment reliability. Therefore, the tip face must possess extremely high smoothness and flatness.

[0003] Currently, polishing of this end face mainly relies on manual operation by operators under optical magnification equipment, which has significant limitations: uneven manual force application easily results in beveled or curved surfaces, making it difficult to guarantee flatness; processing quality is greatly affected by operator experience, resulting in poor consistency and repeatability; production efficiency is low, labor costs are high, and it is difficult to achieve large-scale standardized production. Existing technologies lack dedicated equipment for high-precision, automated polishing of the end faces of such micro-tubular components, and general external cylindrical polishing solutions cannot meet the special requirements of end face processing.

[0004] Therefore, there is an urgent need to develop a dedicated automated polishing equipment for the end face of sampling needles that can achieve automatic, efficient, and high-quality polishing to solve the technical problems existing in current manual processing. Utility Model Content

[0005] The purpose of this application is to overcome the above-mentioned technical problems and provide a medical sampling needle nozzle end face polishing device, which can effectively perform automatic polishing of the medical sampling needle nozzle end face, improve polishing efficiency and quality, thereby improving the performance and sampling effect of the medical sampling needle.

[0006] This application discloses a medical sampling needle tip end face polishing device, which specifically adopts the following solution: A medical sampling needle tip end face polishing device includes: a support platform; a linear drive assembly disposed on the support platform; a clamping mechanism including a sleeve and a clamping assembly, the sleeve being sleeved and fixed on the linear drive assembly, one end of the clamping assembly being fixed on the sleeve, and the other end clamping the sampling needle tip end; and a grinding assembly including a first drive member and a grinding wheel, the first drive member being disposed on the lower end face of the support platform, and the drive end passing through the upper end face of the support platform and connecting to the grinding wheel, the clamping assembly clamping the sampling needle tip end moving reciprocally linearly on the grinding wheel as driven by the linear drive assembly to grind the end face of the sampling needle tip end that abuts against the grinding wheel.

[0007] By adopting the above technical solution, the support platform provides an installation foundation and support for components such as the linear drive assembly and the grinding assembly. The linear drive assembly can drive the clamping mechanism to make linear movements, enabling the sampling needle nozzle end held by the clamping assembly to move accurately to the grinding wheel. The clamping mechanism is fixed to the linear drive assembly through a sleeve, and the clamping assembly can firmly clamp the sampling needle nozzle end, ensuring the stability of the sampling needle during the grinding process. The first drive component of the grinding assembly is set on the lower end face of the support platform and drives the grinding wheel to rotate. The clamping assembly clamps the sampling needle nozzle end and makes reciprocating linear movements on the grinding wheel with the linear drive assembly, which can effectively grind the end face of the sampling needle nozzle end, improve the flatness and smoothness of the sampling needle nozzle end face, thereby improving the performance and sampling effect of the medical sampling needle.

[0008] Optionally, it also includes: an end face abutment component, disposed between the linear drive component and the grinding wheel and fixed on the support platform, for abutting the end face of the sampling needle nozzle end.

[0009] By adopting the above technical solution, setting an end face abutment component and fixing it on the support platform and located between the linear drive component and the grinding wheel, at the lower end of the clamping component, can play abutment and limiting role on the end face of the sampling needle nozzle, which helps to stabilize the position of the sampling needle nozzle during the grinding process and improve the grinding accuracy and effect.

[0010] Optionally, the clamping assembly includes: a locking member, which is locked onto the sleeve; a first fixing member, one end face of which is fixed to the end face of the locking member away from the sleeve; a first support member, one end face of which is fixed to the end face of the fixing member away from the locking member; and a clamping member, which is fixed to the end of the first support member away from the fixing member, for clamping the sampling needle nozzle end.

[0011] By adopting the above technical solution, the engaging component is engaged and fixed on the sleeve, which can make the clamping assembly firmly installed on the sleeve and ensure the stability of the structural connection. One end face of the first fixing component is fixed on the end face of the engaging component away from the sleeve, which can provide a stable connection foundation for subsequent components and enhance the coherence of the overall structure. One end face of the first support component is fixed on the end face of the first fixing component away from the engaging component, which plays a further supporting and connecting role, making the structure of the clamping assembly more reasonable. The clamping component is fixed on the end of the first support component away from the first fixing component to clamp the sampling needle nozzle end, which can accurately and stably clamp the sampling needle nozzle end, facilitating the subsequent grinding operation of the sampling needle nozzle end face.

[0012] Optionally, the clamping member includes a clamping cylinder, a connector, and a through member. One end of the clamping cylinder is fixed to the first support member, and the other end has two clamping claws. The connector is located between the two clamping claws and is provided in two. The two connectors have grooves on their opposite surfaces for clamping the through member. The through member has a through hole for the end of the clamping sampling needle to pass through.

[0013] By adopting the above technical solution, the gripper cylinder is fixed on the first support member, which can provide a stable installation foundation and fixed support for the entire clamping member, ensuring the stability of the clamping member's position during operation; the two grippers of the gripper cylinder can open and close, facilitating the replacement of the connecting parts; the two connecting parts are set between the two grippers, and the opposite surfaces are provided with grooves, which can stably clamp the through part and prevent the through part from shaking; the through part is provided with a through hole for the sampling needle nozzle end to pass through, which can accurately position and fix the sampling needle nozzle end, keeping the sampling needle stable during the polishing process, which is beneficial to improving the polishing quality and accuracy of the sampling needle nozzle end face.

[0014] Optionally, the end face abutment assembly includes: a base, fixed on the support platform, located at the lower end of the grinding wheel and the clamping member; and a second support member, fixed on the end face of the base away from the support platform, located at the lower end of the clamping member, for abutting the end face of the sampling needle nozzle end.

[0015] By adopting the above technical solution, fixing the base on the support platform and located at the lower end of the grinding wheel and clamping member can provide a stable installation foundation for the second support member; fixing the second support member on the end face of the base away from the support platform and located at the lower end of the clamping member can make the second support member accurately abut against the end face of the sampling needle nozzle, thereby limiting the extension length of the end face and helping to improve the polishing consistency of the sampling needle nozzle end face.

[0016] Optionally, the base is provided with a plurality of fixing holes for adjusting the position of the second support member.

[0017] By adopting the above technical solution, multiple fixing holes are set on the base to adjust the position of the second support component. The position of the second support component can be flexibly adjusted according to the size of different sampling needles and grinding requirements, thereby improving the equipment's adaptability to sampling needles of different specifications and the grinding effect.

[0018] Optionally, a pipe is provided on the upper surface of the support platform, and the first driving component is connected to the grinding wheel through the pipe.

[0019] By adopting the above technical solution, the protruding pipe on the upper surface of the support platform can protect the connection between the first driving component and the grinding wheel, preventing the connection line from being interfered with or damaged by external factors; at the same time, the pipe can also guide the connection between the first driving component and the grinding wheel, making the connection more stable and accurate, and ensuring that the first driving component can effectively drive the grinding wheel to work.

[0020] Optionally, a baffle is provided around the upper surface of the support platform.

[0021] By adopting the above technical solution, the baffle surrounding the upper surface of the support platform can prevent debris from splashing when grinding the sampling needle nozzle, thus avoiding debris splashing out of the equipment and causing pollution to the surrounding environment or injury to the operators.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The support platform provides support for other components of the equipment. The linear drive assembly can drive the clamping mechanism to move. The sleeve of the clamping mechanism and the clamping assembly cooperate to firmly clamp the sampling needle nozzle end. The first drive component of the abrasive assembly drives the abrasive wheel to rotate, so that the sampling needle nozzle end clamped by the clamping assembly makes reciprocating linear motion on the abrasive wheel, thereby achieving grinding and polishing of the end face of the sampling needle nozzle end. 2. The end face abutment component is set between the linear drive component and the grinding wheel and fixed on the support platform and located at the lower end of the clamping component. It can abut and limit the end face of the sampling needle nozzle, which helps to improve the stability of the sampling needle and the grinding effect during grinding. 3. The engaging component is engaged and fixed on the sleeve, which allows the clamping assembly to be securely installed on the sleeve, ensuring the stability of the structural connection; one end face of the first fixing component is fixed on the end face of the engaging component away from the sleeve, which can provide a stable connection foundation for subsequent components and enhance the coherence of the overall structure; one end face of the first support component is fixed on the end face of the first fixing component away from the engaging component, which plays a further supporting and connecting role, making the structure of the clamping assembly more reasonable; the clamping component is fixed on the end of the first support component away from the first fixing component to clamp the sampling needle nozzle end, which can accurately and stably clamp the sampling needle nozzle end, facilitating the subsequent grinding operation of the sampling needle nozzle end face. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a medical sampling needle nozzle end face polishing device disclosed in an embodiment of this application; Figure 2 for Figure 1 A three-dimensional structural schematic diagram of a medical sampling needle nozzle end face polishing device for removing a baffle; Figure 3 for Figure 1A partial structural schematic diagram of a medical sampling needle nozzle end face polishing device is disclosed. Figure 4 for Figure 3 A schematic diagram of the clamping component in a medical sampling needle nozzle end face polishing device is disclosed. Figure 5 for Figure 4 An exploded structural diagram of a clamping component in a medical sampling needle nozzle end face polishing device; Figure 6 for Figure 2 A three-dimensional structural diagram of the end face contact component in a medical sampling needle nozzle end face polishing device is disclosed.

[0024] Explanation of reference numerals in the attached figures: 10. Support platform; 11. Pipe; 12. Baffle; 20. Linear drive assembly; 30. Clamping mechanism; 31. Sleeve fitting; 32. Clamping assembly; 321. Engaging part; 322. First fixing part; 323. First support part; 324. Clamping part; 3241. Grip cylinder; 3242. Connecting part; 32421. Groove; 3243. Through part; 40. Abrasive assembly; 41. First drive part; 42. Abrasive wheel; 50. End face contact assembly; 51. Base; 511. Fixing hole; 52. Second support part; 60. Sampling needle. Detailed Implementation

[0025] The terminology used in the following embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” and “this” are intended to include the plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this application refers to and includes any or all possible combinations of one or more of the listed items.

[0026] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0027] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0028] See Figure 1 and Figure 2This application discloses a medical sampling needle nozzle end face polishing device, which includes a support platform 10, a linear drive assembly 20, a clamping mechanism 30, and a grinding assembly 40.

[0029] The linear drive assembly 20 is mounted on the support platform 10. The clamping mechanism 30 includes a sleeve 31 and a clamping assembly 32. The sleeve 31 is sleeved and fixed on the linear drive assembly 20, and one end of the clamping assembly 32 is fixed on the sleeve 31, while the other end is used to clamp the nozzle end of the sampling needle 60. The abrasive assembly 40 includes a first drive member 41 and an abrasive wheel 42. The first drive member 41 is mounted on the lower end surface of the support platform 10, and its drive end passes through the upper end surface of the support platform 10 and connects to the abrasive wheel 42.

[0030] The clamping component 32 clamps the nozzle end of the sampling needle 60 and moves it to the grinding wheel 42 under the drive of the linear drive component 20 to perform reciprocating linear motion, so as to polish the nozzle end face of the sampling needle 60 that is in contact with the grinding wheel 42, thereby achieving the effect of automated polishing of the nozzle end face of the sampling needle 60. Through the cooperation of the linear drive component 20 and the first drive component 41, the stability and consistency of the polishing process can be guaranteed, the accuracy and efficiency of polishing can be improved, and the drawbacks of manual polishing can be avoided.

[0031] Specifically, the support platform 10 serves to support the entire equipment. Its upper and lower surfaces are opposite to each other and can be made of materials with a certain strength, such as metal. A pipe 11 is protruding from the upper surface of the support platform 10. The first driving component 41 is connected to the grinding wheel 42 via the pipe 11. The pipe 11 protects and guides the driving end of the first driving component 41. The pipe 11... Figure 3 As shown, it is a circular tubular structure that can be integrally installed with the upper end face. Additionally, a baffle 12 is provided around the upper end face of the support platform 10 to prevent debris generated during polishing from splashing out, thus protecting the safety of the operator. The baffle 12 is as follows... Figure 1 The rectangular plate-like structure shown can be made of transparent plastic or metal.

[0032] The linear drive assembly 20 includes components such as a motor and a lead screw. The motor can be a stepper motor or a servo motor. The lead screw is connected to the output shaft of the motor. When the motor rotates, the lead screw drives the sleeve 31 to perform linear motion. The sleeve 31 is fitted and fixed onto the lead screw of the linear drive assembly 20. The sleeve 31 can be a sleeve structure with internal threads, achieving linear movement through threaded engagement with the lead screw. The sleeve 31 can be made of metal or plastic, and its inner wall can be smoothed to reduce friction with the lead screw.

[0033] See Figure 3 and Figure 4The clamping assembly 32 includes a snap-fit ​​member 321, a first fixing member 322, a first support member 323, and a clamping member 324. The snap-fit ​​member 321 snaps and fixes itself onto the sleeve member 31. The snap-fit ​​member 321 is a block-shaped structure with a slot. It snaps into the upper end face of the sleeve member 31 through the slot and is fixed by screws to ensure the stability of the connection.

[0034] One end face of the first fixing member 322 is fixed to the end face of the engaging member 321 away from the sleeve member 31, such as Figure 4 As shown, the first fixing member 322 is fixed to the engaging member 321 by a screw that passes through the edge of the first fixing member 322. The first support member 323 is a support arm, with one end fixed to the end face of the fixing member away from the engaging member 321, serving as a support and connection.

[0035] See also Figure 5 The clamping member 324 is fixed to the end of the first support member 323 away from the fixing member, and is used to clamp the suction end of the sampling needle 60. The clamping member 324 includes a gripper cylinder 3241, a connector 3242, and a through member 3243. One end of the gripper cylinder 3241 is fixed to the first support member 323, and the other end has two grippers (not labeled in the figure). The gripper cylinder 3241 can be a pneumatic gripper cylinder 3241, which controls the opening and closing of the grippers by air pressure.

[0036] Connector 3242 is located between two grippers and there are two of them. The opposite surfaces of the two connectors 3242 are provided with grooves 32421 for clamping the through piece 3243. Connector 3242 as follows Figure 5 In the intermediate structure, the groove 32421 on each connector 3242 is a semi-circular through-groove structure. The insert 3243 has a through hole (not labeled in the figure) for the suction end of the sampling needle 60 to pass through. The groove 32421 corresponding to the insert 3243 is cylindrical, ensuring that the sampling needle 60 maintains its inherent straight posture after insertion, so that the suction end face of the sampling needle 60 maintains uniform positive contact with the rotating grinding wheel 42 plane during the reciprocating motion of forward and retraction. The size of the through hole can be designed according to the outer diameter of the suction nozzle of the sampling needle 60. In addition, the corresponding gripper cylinder 3241 controls the opening and closing of the gripper, facilitating the replacement of the insert 3243.

[0037] See Figure 2 The abrasive assembly 40 includes a first driving component 41 and an abrasive wheel 42. The first driving component 41 can be a motor, with the driving end of the motor passing through the upper surface of the support platform 10 and connected to the abrasive wheel 42 via a pipe 11. When the first driving component 41 rotates, it drives the abrasive wheel 42 to rotate. The abrasive wheel 42 has a circular grinding wheel structure, and its working end face has a certain flatness. It is set perpendicular to the feed path of the sampling needle 60, thereby ensuring that when the sampling needle 60 moves forward, its suction nozzle end face can achieve uniform contact and friction with the abrasive wheel end face over the entire range.

[0038] See Figure 2 and Figure 6 The medical sampling needle nozzle end face polishing device also includes an end face abutment component 50, which is disposed between the linear drive component 20 and the grinding wheel 42 and fixed on the support platform 10, and located at the lower end of the connector 3242. It is used to abut the nozzle end face of the sampling needle 60 to abut the exposed end face of the nozzle end of the sampling needle 60 and to limit the length.

[0039] The end face contact assembly 50 includes a base 51 and a second support member 52. The base 51 is fixed to the support platform 10 and located at the lower end of the grinding wheel 42 and the clamping member 324. The base 51 can be a block structure and is fixed to the support platform 10 by bolts or welding. The second support member 52 is fixed to the end face of the base 51 away from the support platform 10 and located at the lower end of the clamping member 324. It is used to abut against the end face of the sampling needle 60's suction nozzle. The second support member 52 is as follows: Figure 6 The structure shown has a flat surface at its top.

[0040] See Figure 6 The base 51 is provided with multiple fixing holes 511 for adjusting the position of the second support member 52. The fixing holes 511 can be circular holes. The second support member 52 can be fixed to the base 51 by bolts passing through the fixing holes 511. The position of the second support member 52 can be adjusted through different fixing holes 511 to adapt to the position of the clamping assembly 32, increasing the flexibility of equipment adjustment.

[0041] For example, during operation, the clamping mechanism 30 ensures that the sampling needle 60 is fixed in a vertical position. The linear drive assembly 20 drives the clamping mechanism 30 to move the sampling needle 60 forward at a constant speed, so that its vertical suction nozzle end face makes smooth and positive contact with the horizontally rotating grinding wheel 42 end face for the first polishing. After reaching the preset position, the linear drive assembly 20 drives the reverse movement, and the sampling needle 60 retracts at a constant speed. During this process, the end face contacts the grinding wheel 42 again for a second polishing. This orthogonal contact method between the "vertical end face" and the "horizontal grinding wheel surface", as well as the "forward-retraction" end face contact bidirectional polishing, can effectively eliminate the micro-tilts that may be caused by polishing in one direction, ensuring the overall flatness and smoothness of the end face.

[0042] The implementation principle of this embodiment is as follows: The polishing equipment drives the clamping mechanism 30 to perform linear reciprocating motion via the linear drive component 20, moving the suction nozzle end of the sampling needle 60 onto the grinding wheel 42. Simultaneously, the first drive component 41 drives the grinding wheel 42 to rotate, thereby achieving automated polishing of the suction nozzle end face of the sampling needle 60. This automated polishing method avoids problems such as uneven force application and difficulty in ensuring flatness in manual polishing, improving polishing accuracy and efficiency. Furthermore, the processing quality is not affected by human experience, exhibiting good consistency and repeatability, and enabling large-scale standardized production.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A medical sampling needle tip end face polishing device, characterized in that, include: Support platform (10); A linear drive assembly (20) is disposed on the support platform (10); The clamping mechanism (30) includes a sleeve (31) and a clamping assembly (32). The sleeve (31) is sleeved and fixed on the linear drive assembly (20). One end of the clamping assembly (32) is fixed on the sleeve (31), and the other end clamps the nozzle end of the sampling needle (60). The abrasive assembly (40) includes a first drive member (41) and an abrasive wheel (42). The first drive member (41) is disposed on the lower end surface of the support platform (10), and the drive end passes through the upper end surface of the support platform (10) and connects to the abrasive wheel (42). The clamping assembly (32) clamps the suction end of the sampling needle (60) and moves it to the abrasive wheel (42) with the drive of the linear drive assembly (20) to perform reciprocating linear motion, so as to polish the end face of the suction end of the sampling needle (60) that abuts against the abrasive wheel (42).

2. The medical sampling needle nozzle end face polishing device according to claim 1, characterized in that, Also includes: An end face abutment component (50) is disposed between the linear drive component (20) and the abrasive wheel (42) and fixed on the support platform (10) for abutting the end face of the nozzle end of the sampling needle (60).

3. The medical sampling needle nozzle end face polishing device according to claim 2, characterized in that, The clamping assembly (32) includes: The engaging component (321) engages and is fixed to the sleeve component (31); The first fastener (322) has one end face fixed to the end face of the engaging member (321) away from the sleeve member (31); The first support member (323) has one end face fixed to the end face of the fixing member away from the engaging member (321); A clamping member (324) is fixed to the end of the first support member (323) away from the fixing member, and is used to clamp the nozzle end of the sampling needle (60).

4. The medical sampling needle nozzle end face polishing device according to claim 3, characterized in that, The clamping member (324) includes a clamping cylinder (3241), a connector (3242), and a through member (3243). One end of the clamping cylinder (3241) is fixed on the first support member (323), and the other end has two clamping jaws. The connector (3242) is located between the two clamping jaws and is configured as two. The two connectors (3242) have grooves (32421) on their opposite surfaces for clamping the through member (3243). The through member (3243) has a through hole for the suction end of the clamping sampling needle (60) to pass through.

5. The medical sampling needle nozzle end face polishing device according to claim 3, characterized in that, The end face abutment component (50) includes: The base (51) is fixed on the support platform (10) and located at the lower end of the grinding wheel (42) and the clamping member (324); The second support member (52) is fixed on one end face of the base (51) away from the support platform (10), located at the lower end of the clamping member (324), and is used to abut against the end face of the suction nozzle end of the sampling needle (60).

6. The medical sampling needle nozzle end face polishing device according to claim 5, characterized in that, The base (51) is provided with a plurality of fixing holes (511) for adjusting the position of the second support (52).

7. The medical sampling needle nozzle end face polishing device according to claim 1, characterized in that, The upper surface of the support platform (10) is provided with a pipe (11), and the first driving member (41) is connected to the grinding wheel (42) through the pipe (11).

8. The medical sampling needle nozzle end face polishing device according to claim 1, characterized in that, The upper surface of the support platform (10) is surrounded by a baffle (12).

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