CN216816145U

CN216816145U - Reagent needle device

Info

Publication number: CN216816145U
Application number: CN202123237682.2U
Authority: CN
Inventors: 李书跃; 张金峰; 吴武彬; 杨科; 戴利娟
Original assignee: Syscan Medical Technology Suzhou Co ltd
Current assignee: Syscan Medical Technology Suzhou Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-06-24
Anticipated expiration: 2031-12-21

Abstract

The present invention relates to a reagent needle device including: the needle assembly comprises a first moving assembly, a second moving assembly and a needle assembly, wherein the first moving assembly comprises a first driving unit and a first path assembly, and the first driving unit is connected with the first path assembly; the second moving assembly comprises a second driving unit and a second path assembly, the second path assembly is connected with the first path assembly and moves along the first path through the first path assembly, and the second driving unit is connected with the second path assembly through a ball spline arranged along the first path; the needle assembly is connected to and moved along a second path by the second path assembly. The utility model reduces the load requirement of the first driving unit through the ball spline, so that the precision misalignment of the needle assembly moving along the first path is reduced, and the cost is lower.

Description

Reagent needle device

Technical Field

The utility model relates to the technical field of reagent needles, in particular to a reagent needle device.

Background

When a hospital needs to carry out blood detection, a reagent needle is generally required to be used for carrying out auxiliary operation, the reagent needle moves to a reagent storage area, the needle body descends to a reagent bottle to absorb a reaction reagent, then the needle body resets and moves to a liquid adding position of a sample cup to spit the reagent into the reaction cup, and the reagent needle needs to meet the movement requirements in the vertical direction and the horizontal direction at the same time. In the conventional reagent needle device, a synchronous belt and a linear guide rail are generally adopted to realize the movement of a needle body assembly in the horizontal and vertical directions, and a driving part in the vertical direction needs to synchronously move in the horizontal direction along with the needle body assembly; on one hand, the structure of a part of the needle body assembly which drives the needle body assembly to move in the vertical direction is heavy, and large inertia is easily generated in the moving process, so that the precision of the needle body assembly moving in the horizontal direction is inaccurate; on the other hand, the load requirement of the driving part in the horizontal direction is increased, and the product cost is increased.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the present invention is to overcome the technical problem of heavy structure of the part of the needle assembly driving the needle assembly to move in the vertical direction in the prior art, and to provide a reagent needle device in which the driving part in the vertical direction does not need to move in the horizontal direction synchronously with the needle assembly.

In order to solve the above technical problems, the present invention provides a reagent needle device, including:

the first moving assembly comprises a first driving unit and a first path assembly, and the first driving unit is connected with the first path assembly;

the second moving assembly comprises a second driving unit and a second path assembly, the second path assembly is connected with the first path assembly and moves along the first path through the first path assembly, and the second driving unit is connected with the second path assembly through a ball spline arranged along the first path;

a needle assembly connected to and moved along a second path by the second path assembly.

In one embodiment of the present invention, the first path assembly includes a first path driving wheel, a first path driven wheel and a first path synchronous belt connecting the first path driving wheel and the first path driven wheel, the first path driving wheel is connected to the first driving unit, and the second path assembly is connected to the first path synchronous belt and moves along with the first path synchronous belt.

In one embodiment of the present invention, the second path assembly includes a second path driving wheel, a second path driven wheel and a second path synchronous belt connecting the second path driving wheel and the second path driven wheel, the second path driving wheel is connected with the outer cylinder of the ball spline, the spline shaft of the ball spline is connected with the second driving unit, and the needle assembly is connected with the second path synchronous belt and moves along with the second path synchronous belt.

In one embodiment of the present invention, the second driving unit includes a driving wheel, a driving driven wheel and a driving timing belt connecting the driving wheel and the driving driven wheel, the driving wheel is connected with a driving device, and the driving driven wheel is connected with the spline shaft of the ball spline.

In one embodiment of the utility model, the needle assembly comprises a needle body and a liquid level detection plate, wherein the needle body is connected with the liquid level detection plate.

In one embodiment of the utility model, the needle assembly further comprises a needle support and a shield, the shield, needle body and liquid level detection plate are all disposed on the needle support, and the liquid level detection plate is located within the shield.

In one embodiment of the utility model, the needle assembly further comprises an anti-collision assembly, the anti-collision assembly comprises a needle body support and a sensing piece, the needle body support is located on the needle support and connected with the needle body, the needle support is provided with a through groove for the needle body to vertically move, the needle body support moves synchronously with the needle body, and the sensing piece is arranged on the needle support and located on one side of the needle body support.

In one embodiment of the present invention, the needle assembly further comprises a reset assembly comprising an elastic member and a reset support, the needle body support has a reset channel, the first end of the reset support is disposed on the needle support through the reset channel, and the elastic member is sleeved on the second end of the reset support.

In one embodiment of the present invention, the needle assembly further includes a support assembly including a first support portion, a second support portion, and a driving support portion, the first support portion is connected to the driving support portion, the first driving unit and the second driving unit are both disposed on the driving support portion, the first path assembly is disposed on the first support portion, the second path assembly is disposed on the second support portion, the second support portion is connected to the first path assembly through a first clamping member, and the needle assembly is connected to the second path assembly through a second clamping member.

In an embodiment of the present invention, a first slide rail assembly is disposed on the first supporting portion, the second supporting portion is connected to the first slide rail assembly, a second slide rail assembly is disposed on the second supporting portion, and the needle assembly is connected to the second slide rail assembly.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

according to the reagent needle device, the driving force of the second driving unit is transmitted to the second path assembly through the ball spline, under the condition that the second driving unit does not move synchronously with the second path assembly, the needle assembly can move along the first path along with the second path assembly through the first path assembly and can move along the second path through the second path assembly, the load requirement of the first driving unit is reduced, the condition that the precision of the needle assembly moving along the first path is misaligned is reduced, and the cost is lower.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which

FIG. 1 is a schematic view showing the structure of a reagent needle device according to the present invention.

Fig. 2 is a partial structural view of the reagent needle device shown in fig. 1.

Fig. 3 is a partial structural view of the reagent needle unit shown in fig. 1.

Fig. 4 is a partial structural view of the reagent needle device shown in fig. 1.

Fig. 5 is a partial structural operation view of the reagent needle device shown in fig. 4.

The specification reference numbers indicate: 1. a first moving assembly; 101. a first drive unit; 102. a first path component; 1021. a first path capstan; 1022. a first path driven wheel; 1023. a first path synchronous belt; 2. a second moving assembly; 201. a second driving unit; 2011. driving the driving wheel; 2012. a driven wheel is driven; 2013. driving a synchronous belt; 2014. a drive device; 202. a second path assembly; 2021. a second path driving wheel; 2022. a second path driven wheel; 2023. a second path synchronous belt; 3. a needle assembly; 301. a needle body; 302. a liquid level detection plate; 303. a needle support; 304. a shield case; 305. an anti-collision assembly; 3051. a needle body support; 3052. a sensing member; 306. a reset assembly; 3061. an elastic member; 3062. resetting the support member; 4. a ball spline; 5. a support assembly; 501. a first support section; 502. a second support portion; 503. a driving support part; 504. a first slide rail assembly; 505. a second slide rail assembly; 6. a first clamping member; 7. a second clamping member.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Referring to fig. 1 to 5, a reagent needle device of the present invention includes: a first moving assembly 1, a second moving assembly 2 and a needle assembly 3, wherein the first moving assembly 1 comprises a first driving unit 101 and a first path assembly 102, and the first driving unit 101 is connected with the first path assembly 102; the second moving assembly 2 comprises a second driving unit 201 and a second path assembly 202, the second path assembly 202 is connected with the first path assembly 102 and moves along the first path through the first path assembly 102, and the second driving unit 201 is connected with the second path assembly 202 through a ball spline 4 arranged along the first path; the needle assembly 3 is connected to the second path assembly 202 and moved along a second path by the second path assembly 202. In the present invention, the driving force of the second driving unit 201 is transmitted to the second path assembly 202 through the ball spline 4, and the needle assembly 3 can move along the first path with the second path assembly 202 through the first path assembly 102 and can move along the second path with the second path assembly 202 through the second path assembly 202 under the condition that the second driving unit 201 does not move synchronously with the second path assembly 202, so that the load requirement of the first driving unit 101 is reduced, the condition that the precision of the needle assembly 3 moving along the first path is misaligned is reduced, and the cost is lower. In this embodiment, the first path may refer to a horizontal direction, and the second path may refer to a vertical direction.

Specifically, in this embodiment, the first path assembly 102 includes a first path driving wheel 1021, a first path driven wheel 1022 and a first path synchronous belt 1023 connecting the first path driving wheel 1021 and the first path driven wheel 1022, where the first path driving wheel 1021 is connected to the first driving unit 101, in this embodiment, the first driving unit 101 may be a motor, the first driving unit 101 drives the first path synchronous belt 1023 to rotate through the first path driving wheel and the first path driven wheel, and the second path assembly 202 is connected to the first path synchronous belt 1023 and moves along with the first path synchronous belt 1023; specifically, the second path assembly 202 includes a second path driving wheel 2021, a second path driven wheel 2022 and a second path synchronous belt 2023 connecting the second path driving wheel 2021 and the second path driven wheel 2022, the second driving unit 201 includes a driving wheel 2011, a driving driven wheel 2012 and a driving synchronous belt 2013 connecting the driving wheel 2011, the driving wheel 2011 is connected to the driving device 2014, the driving driven wheel 2012 is connected to the spline shaft of the ball spline 4, and the second path driving wheel 2021 is connected to the outer cylinder of the ball spline 4 The driven wheel drives the second path synchronous belt 2023 to move, and the needle assembly 3 is connected with the second path synchronous belt 2023 and moves along with the second path synchronous belt 2023.

Specifically, in this embodiment, the present invention further includes a support assembly 5, the support assembly 5 includes a first support portion 501, a second support portion 502, and a driving support portion 503, the first support portion 501 is connected to the driving support portion 503, the first driving unit 101 and the second driving unit 201 are both disposed on the driving support portion 503, the first path assembly 102 is disposed on the first support portion 501, the second path assembly 202 is disposed on the second support portion 502, the second support portion 502 has a through groove for the spline shaft of the ball spline 4 to pass through and a bearing disposed correspondingly, the second support portion 502 is connected to the first path synchronous belt 1023 by a first clamping member 6, and the needle assembly 3 is connected to the second path synchronous belt 2023 by a second clamping member 7. More specifically, the first clamping piece and the second clamping piece respectively comprise a pressing piece and a belt pressing plate, and pressing force is applied to the synchronous belt through the pressing pieces, so that the pressing pieces and the belt pressing plate can move synchronously along with the synchronous belt. Preferably, a first slide rail assembly 504 is disposed on the first supporting portion 501, the second supporting portion 502 is connected to the first slide rail assembly 504, a second slide rail assembly 505 is disposed on the second supporting portion 502, and the needle assembly 3 is connected to the second slide rail assembly 505, in this embodiment, on one hand, a certain supporting force is provided for the second supporting portion 502 through the first slide rail assembly 504, so as to slow down the load of the first path synchronous belt 1023, and a certain supporting force is provided for the needle assembly 3 through the second slide rail assembly 505, so as to slow down the load of the second path synchronous belt 2023; on the other hand, the movement paths of the second support part 502 and the needle assembly 3 are limited by the first and second slide rail assemblies, so that the movement accuracy when the second support part 502 moves along the first path timing belt 1023 and the needle assembly 3 moves along the second path timing belt 2023 is higher.

Specifically, in this embodiment, the device further includes a first path resetting mechanism and a second path resetting mechanism, the first path resetting mechanism includes a first path resetting optocoupler and a first path sensing blocking piece, the first path resetting optocoupler is arranged at a predetermined position (i.e., a first path initial position) of the first supporting portion 501, the first path sensing blocking piece is arranged on the second supporting portion 502, and when the first path resetting optocoupler senses the first path sensing blocking piece, it is determined that the second path assembly 202 is reset; the second path resetting mechanism comprises a second path resetting optocoupler and a second path sensing blocking piece, the second path sensing blocking piece is arranged at a preset position (namely a second path initial position) of the second supporting part 502, the second path resetting optocoupler is arranged on the second slide rail assembly 505 or the needle assembly 3, and when the second path resetting optocoupler senses the second path sensing blocking piece, the second path assembly 202 is judged to reset.

Specifically, in this embodiment, the needle assembly 3 includes a needle body 301 and a liquid level detection plate 302, the needle body 301 is connected to the liquid level detection plate 302, the liquid level detection plate 302 is configured to detect a capacitance of the needle body 301, and when a capacitance value of the needle body 301 reaches a predetermined value, it is determined that the needle point of the needle body 301 has reached the liquid level of the reagent, and since a change in the capacitance value in the air and the capacitance value in the reagent is small, in this embodiment, the liquid level detection plate 302 is a circuit board, and the detection accuracy is improved through circuit amplification processing. More specifically, the needle assembly 3 further includes a needle support 303 and a shielding case 304, the needle body 301, and the liquid level detection plate 302 are all disposed on the needle support 303, and the liquid level detection plate 302 is located in the shielding case 304, since the liquid level detection plate 302 is easily interfered by external electromagnetic waves, in this embodiment, the shielding case 304 can effectively protect the liquid level detection plate 302, so as to improve the measurement accuracy of the liquid level detection plate 302, and the needle support 303 is connected to the second path synchronous belt 2023.

Preferably, in this embodiment, the needle assembly 3 further comprises a collision avoidance assembly 305, the collision avoidance assembly 305 comprises a needle holder 3051 and a sensing member 3052, the needle holder 3051 is located on the needle support 303 and connected to the needle 301, the needle support 303 has a through slot for the needle 301 to move vertically, the needle holder 3051 moves synchronously with the needle 301, and the sensing member 3052 is disposed on the needle support 303 and located at one side of the needle holder 3051, in this embodiment, the needle 301 is positioned by the needle holder 3051, that is, the needle 301 is restricted from free-falling movement (vertically downward) relative to the needle support 303; as shown in fig. 5, when the needle body 301 moves vertically downwards and touches a solid substance, the needle body 301 moves vertically upwards in synchronization with the needle body support 3051, and when the sensing piece 3052 detects an action signal of the needle body support 3051, the second driving unit 201 stops working, more specifically, in this embodiment, the sensing piece 3052 is an anti-collision optocoupler, and the needle body support 3051 normally works to shield the anti-collision optocoupler, and when the needle body support 3051 moves vertically upwards and breaks away from the anti-collision optocoupler, the anti-collision optocoupler detects a signal. It should be noted that, in this embodiment, the collision avoidance component 305, the first path resetting mechanism, and the second path resetting mechanism may all implement signal transmission through an upper computer.

Specifically, in this embodiment, the needle assembly 3 further includes a reset assembly 306, the reset assembly 306 includes an elastic member 3061 and a reset support 3062, the needle support 3051 has a reset through slot, a first end of the reset support 3062 is disposed on the needle support 303 through the reset through slot, the elastic member 3061 is sleeved on a second end of the reset support 3062, a retractable distance of the elastic member 3061 is greater than or equal to a distance that the needle support 3051 is separated from the anti-collision optical coupler, and the elastic member 3061 is used for pressing the needle support 3051 on the needle support 303.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Various other modifications and alterations will occur to those skilled in the art upon reading the foregoing description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the spirit or scope of the utility model.

Claims

1. A reagent needle device characterized by: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

a needle assembly connected to and moving along a second path by the second path assembly.

2. A reagent needle device according to claim 1, wherein: the first path subassembly includes first path action wheel, first path from driving wheel and connect the first path hold-in range of the two, first path action wheel is connected first drive unit, the second path subassembly with first path hold-in range is connected and is followed first path hold-in range moves.

3. A reagent needle device according to claim 1, wherein: the second path assembly comprises a second path driving wheel, a second path driven wheel and a second path synchronous belt for connecting the second path driving wheel and the second path driven wheel, the second path driving wheel is connected with an outer barrel of the ball spline, the spline shaft of the ball spline is connected with the second driving unit, and the needle assembly is connected with the second path synchronous belt and moves along with the second path synchronous belt.

4. A reagent needle device according to claim 1, wherein: the second driving unit comprises a driving wheel, a driving driven wheel and a driving synchronous belt connected with the driving wheel and the driving driven wheel, the driving wheel is connected with a driving device, and the driving driven wheel is connected with the spline shaft of the ball spline.

5. The reagent needle device according to claim 1, wherein: the needle assembly comprises a needle body and a liquid level detection plate, and the needle body is connected with the liquid level detection plate.

6. A reagent needle device according to claim 5, wherein: the needle assembly further comprises a needle support and a shielding cover, the needle body and the liquid level detection plate are all arranged on the needle support, and the liquid level detection plate is located in the shielding cover.

7. The reagent needle device according to claim 6, wherein: the needle assembly further comprises an anti-collision assembly, the anti-collision assembly comprises a needle body support and a sensing piece, the needle body support is located on the needle support and connected with the needle body, the needle support is provided with a through groove for the needle body to vertically move, the needle body support moves along with the needle body, and the sensing piece is arranged on the needle support and located on one side of the needle body support.

8. A reagent needle device according to claim 7, wherein: the needle assembly further comprises a reset assembly, the reset assembly comprises an elastic piece and a reset supporting piece, the needle body support is provided with a reset through groove, the first end of the reset supporting piece penetrates through the reset through groove to be arranged on the needle supporting piece, and the elastic piece is sleeved at the second end of the reset supporting piece.

9. A reagent needle device according to any one of claims 1 to 8, wherein: the needle assembly comprises a needle assembly and a supporting assembly, wherein the supporting assembly comprises a first supporting portion, a second supporting portion and a driving supporting portion, the first supporting portion is connected with the driving supporting portion, the first driving unit and the second driving unit are arranged on the driving supporting portion, the first path assembly is arranged on the first supporting portion, the second path assembly is arranged on the second supporting portion, the second supporting portion is connected with the first path assembly through a first clamping piece, and the needle assembly is connected with the second path assembly through a second clamping piece.

10. The reagent needle device according to claim 9, wherein: the needle assembly is characterized in that a first sliding rail assembly is arranged on the first supporting portion, the second supporting portion is connected with the first sliding rail assembly, a second sliding rail assembly is arranged on the second supporting portion, and the needle assembly is connected with the second sliding rail assembly.