CN215575203U - Sampling needle actuating mechanism - Google Patents

Abstract

The utility model relates to a sampling needle driving mechanism, and belongs to sampling parts of urine analyzers. Including the fixed plate, transverse guide, the slider, longitudinal fixity board, the horizontal motion hold-in range, a pressing plate, the gear, positioning wheel one, the horizontal motion motor is fixed at the fixed plate back, install left spacing opto-coupler and limiting plate, the last vertical slide rail of fixed connection of longitudinal fixity board, the vertical motion motor is fixed on longitudinal fixity board, vertical motion motor shaft and band pulley fixed connection, hold-in range two and band pulley, two wire wrappings of positioning wheel, hold-in range two passes through clamp plate and sampling needle fixed plate fixed connection, go up spacing opto-coupler and longitudinal fixity board upper portion fixed connection, sampling needle and sampling needle fixed plate fixed connection. The advantage is novel structure, and the structure of wholly moving belongs to biax structure, is equipped with transverse guide on the fixed plate, and the transverse guide subsection has two, installs left spacing opto-coupler and limiting plate, guarantees the degree of accuracy when the horizontal action of sampling needle stops, has improved the detection efficiency of complete machine.

Description

Sampling needle actuating mechanism

Technical Field

The utility model relates to a sampling component of a urine analyzer, in particular to a driving mechanism for the whole movement process of a sampling needle from a sampling position to a sample dripping position and then to a cleaning position.

Background

The driving mechanism of a sampling needle in a conventional urine analyzer is as described in patent 'sampling needle driving mechanism' and publication No. CN202119654U, and is structurally characterized in that a probe 506 is fixed on a lever 505 through a probe cover plate 508, a pressing plate 509 is fixedly connected with the lever 505, the lever 505 is rotatably connected with a probe arm 501, a swing arm assembly 5 is connected with a lead screw assembly 4 through a lower limit sleeve 7, a coupler 10 is fixedly connected with the lead screw assembly 4, a lifting motor 11 is fixedly connected with the lower end of the coupler 10, the swing arm assembly 5 is rotatably connected with a probe support 2, a rotating motor 9 is fixedly connected with the probe support 2, and the probe support 2 is fixedly connected with a bottom plate 12; the lifting motor 11 rotates to drive the coupler 10, the coupler 10 drives the swing arm assembly 5 mounted on the screw rod assembly 4 to move up and down for sampling or cleaning, and the rotating motor 9 rotates to drive the swing arm assembly 5 to move rotationally, so that the sampling and cleaning driving process of the sampling needle in the existing urine analyzer is realized. The disadvantages are that: 1. the probe is fixed on the swing arm and rotates when sampling and cleaning are carried out by taking the screw rod as the center, and the required space is large when the swing arm rotates, so that the appearance quality of the whole machine is influenced. 2. The swing arm structure belongs to the cantilever beam structure, and cantilever tip installation probe leads to its rotational motion speed slow, if the speed is too fast, makes the probe produce vibrations and influence positioning accuracy, and operating speed decides sampling efficiency, has reduced the detection efficiency of complete machine.

Disclosure of Invention

The utility model provides a sampling needle driving mechanism, which aims to solve the problems of low operation efficiency, large operation space and low detection efficiency of the whole machine of the conventional strip-selecting sampling needle driving mechanism.

The technical scheme adopted by the utility model is as follows: two parallel transverse guide rails are arranged on the fixing plate, the sliding blocks are respectively connected with the transverse guide rails in a sliding manner, the sliding blocks are fixedly connected with a longitudinal fixing plate, the longitudinal fixing plate is fixedly connected with a transverse running synchronous belt through a pressing plate, the transverse running synchronous belt is in winding connection with a gear and a positioning wheel, a transverse running motor is fixed on the back of the fixing plate, a transverse running motor shaft is fixedly connected with the gear, the utility model discloses a sampling needle, including two guide rail end positions, the sampling needle is fixed on the vertical fixed plate, the horizontal guide rail end position of subsection installs left spacing opto-coupler and limiting plate on the fixed plate, vertical fixed plate goes up the vertical slide rail of fixed connection, sampling needle fixed plate and slide rail sliding connection, vertical operation motor is fixed on vertical fixed plate, vertical operation motor shaft and band pulley fixed connection, hold-in range two and band pulley, two wrappings of locating wheel, hold-in range two passes through clamp plate and sampling needle fixed plate fixed connection, go up limiting opto-coupler and vertical fixed plate upper portion fixed connection, sampling needle and sampling needle fixed plate fixed connection.

The utility model has the advantages of novel structure, high operation efficiency and improvement on the detection efficiency of the whole machine, and the whole operation structure belongs to a double-shaft structure, the transverse guide rails are arranged on the fixing plate, the two transverse guide rails are distributed, the vibration problem of the sampling needle during transverse rapid operation is solved, the left limiting optocoupler and the limiting plate are arranged, the accuracy of the sampling needle during transverse moving and stopping is ensured, and the detection efficiency of the whole machine is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a side view of the present invention.

Detailed Description

Two parallel transverse guide rails 2 are arranged on a fixing plate 1, so that the vibration problem of a sampling needle during transverse rapid operation is solved, a sliding block 7 is respectively connected with the transverse guide rails 2 in a sliding manner, the sliding block 7 is fixedly connected with a longitudinal fixing plate 6, the longitudinal fixing plate 6 is fixedly connected with a transverse operation synchronous belt 4 through a pressing plate 8, the transverse operation synchronous belt 4 is in winding connection with a gear 5 and a positioning wheel I9, a transverse operation motor 10 is fixed on the back surface of the fixing plate 1, a shaft of the transverse operation motor 10 is fixedly connected with the gear 5, a left limit optical coupler 3 and a limit plate 11 are arranged at the end parts of the two guide rails 2 distributed on the fixing plate 1, so that the accuracy of the sampling needle 20 during transverse operation stop is ensured, a longitudinal slide rail 12 is fixedly connected on the longitudinal fixing plate 6, a sampling needle fixing plate 13 is in sliding connection with the slide rail 12, a longitudinal operation motor 15 is fixed on the longitudinal fixing plate 6, and a longitudinal operation motor 15 shaft is fixedly connected with a belt wheel 16, the second synchronous belt 17 is in winding connection with the belt wheel 16 and the second positioning wheel 14, the second synchronous belt 17 is fixedly connected with the sampling needle fixing plate 13 through the pressing plate 18, the upper limiting optocoupler 19 is fixedly connected with the upper portion of the longitudinal fixing plate 6, and the sampling needle 20 is fixedly connected with the sampling needle fixing plate 13.

The working principle is as follows:

the initial state of the sampling needle 20 is that the sampling needle fixing plate 13 is stopped at the upper limiting optocoupler 19 of the longitudinal fixing plate 6, and the longitudinal fixing plate 6 is stopped at the left limiting optocoupler 3 of the fixing plate 1. When the sampling needle 20 moves from a horizontal position to a sampling position, the horizontal motor 10 rotates to drive the gear 5 to rotate, the gear 5 drives the synchronous belt 4 to enable the synchronous belt 4 to do linear motion through two parallel sides of the positioning wheel I9, the longitudinal fixing plate 6 fixed on the synchronous belt 4 through the pressing plate 8 moves transversely on the horizontal guide rail 2, the longitudinal fixing plate 6 stops when moving to the sampling position, the longitudinal motor 15 on the longitudinal fixing plate 6 starts to rotate at the moment to drive the gear 16 to rotate, the gear 16 drives the synchronous belt II 17 to enable the synchronous belt II 17 to do linear motion through two parallel sides of the positioning wheel II 14, and the sampling needle fixing plate 13 does linear motion up and down on the guide rail 12; when the sampling needle fixing plate 12 moves downwards, the sampling needle 20 samples, move upwards after sampling and reset, at the moment, the reverse rotation of the transverse motor 10 drives the longitudinal fixing plate 6 to move towards the sampling needle 20 through the synchronous belt 4, the operation process is in operation, the test paper sample dripping process is completed to return to the initial position, at the moment, the longitudinal motor 15 starts to rotate, the sampling needle fixing plate 13 is driven to move downwards, the end part of the sampling needle 20 enters the cleaning pool to clean the inner side and the outer side, the gear 16 is driven to rotate by the rotation of the longitudinal motor 15 after cleaning, the synchronous belt 17 drives the sampling needle fixing plate 13 to move upwards to reset, at the moment, one sampling is completed, the samples are dripped, the cleaning and the resetting cycle.

Claims (1)

1. A sampling needle drive mechanism characterized in that: two parallel transverse guide rails are arranged on the fixing plate, the sliding blocks are respectively connected with the transverse guide rails in a sliding manner, the sliding blocks are fixedly connected with a longitudinal fixing plate, the longitudinal fixing plate is fixedly connected with a transverse running synchronous belt through a pressing plate, the transverse running synchronous belt is in winding connection with a gear and a positioning wheel, a transverse running motor is fixed on the back of the fixing plate, a transverse running motor shaft is fixedly connected with the gear, the utility model discloses a sampling needle, including two guide rail end positions, the sampling needle is fixed on the vertical fixed plate, the horizontal guide rail end position of subsection installs left spacing opto-coupler and limiting plate on the fixed plate, vertical fixed plate goes up the vertical slide rail of fixed connection, sampling needle fixed plate and slide rail sliding connection, vertical operation motor is fixed on vertical fixed plate, vertical operation motor shaft and band pulley fixed connection, hold-in range two and band pulley, two wrappings of locating wheel, hold-in range two passes through clamp plate and sampling needle fixed plate fixed connection, go up limiting opto-coupler and vertical fixed plate upper portion fixed connection, sampling needle and sampling needle fixed plate fixed connection.

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