CN110646628A - Reaction cup grabbing and placing device for immunoassay analyzer - Google Patents
Reaction cup grabbing and placing device for immunoassay analyzer Download PDFInfo
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- CN110646628A CN110646628A CN201910938370.2A CN201910938370A CN110646628A CN 110646628 A CN110646628 A CN 110646628A CN 201910938370 A CN201910938370 A CN 201910938370A CN 110646628 A CN110646628 A CN 110646628A
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- 238000003018 immunoassay Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 69
- 238000007906 compression Methods 0.000 claims abstract description 19
- 230000006835 compression Effects 0.000 claims abstract description 18
- 238000013519 translation Methods 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000012790 adhesive layer Substances 0.000 claims description 2
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 230000001900 immune effect Effects 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 5
- 238000012864 cross contamination Methods 0.000 abstract description 4
- 239000000523 sample Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/04—Details of the conveyor system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/04—Details of the conveyor system
- G01N2035/0401—Sample carriers, cuvettes or reaction vessels
- G01N2035/0406—Individual bottles or tubes
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a reaction cup grabbing and releasing device for an immunoassay analyzer, which comprises: the device comprises a reaction cup, a clamping jaw mechanism for grabbing the reaction cup and a two-dimensional translation mechanism for driving the clamping jaw mechanism to move; the clamping jaw mechanism comprises an installation seat, a clamping jaw and a stop block, wherein the clamping jaw and the stop block are arranged on the installation seat. The clamping jaw mechanism realizes the grabbing and clamping of the reaction cup by utilizing the spring device, has compact and small structure, does not have a driving device, and does not need a special control system; after the two-dimensional motion mechanism is matched with the two-dimensional motion mechanism for use, only the two-dimensional motion mechanism needs to be controlled, and the control is simple. The clamping force can be changed by adjusting the stiffness coefficient of the compression spring, and the impact in the clamping process is ensured to be small. The clamping jaw is clamped from the side edge of the reaction cup, is not inserted into the reaction cup and does not contact with the cup mouth, so that cross contamination among samples is avoided. The invention has simple structure and high reliability.
Description
Technical Field
The invention relates to the field of in-vitro diagnosis medical instruments, in particular to a reaction cup grabbing and placing device for an immunoassay analyzer.
Background
Immunoassay analyzers (hereinafter "instruments") typically require the use of specialized disposable cuvettes (hereinafter "cuvettes") for testing samples. In automated instruments, cuvettes are usually supplied in bulk and are picked, transferred, and placed by specialized mechanisms.
The reaction cuvette used in the apparatus is generally specially designed. The reaction cup has the capacity of hundreds of microliters to a few milliliters, and the external dimension is small. The reaction cup is usually of a specific construction to ensure a stable and reliable placement in the instrument and to facilitate the handling of the mechanism. The reaction cup is stably and quickly grabbed and placed, and is a key factor for ensuring the reliable and quick operation of the instrument. Meanwhile, the contact between the reaction cup gripping and placing mechanism and the sample, which causes cross contamination, must be avoided.
At present, the reaction cup holding and releasing device is usually powered, such as the following patents: "cuvette hand grip and sample analysis apparatus (201810764632) for sample analyzer" is driven using electromagnets; the patent: "a manipulator device (201320598164) for stably holding and releasing reaction cups" and patent: the reaction cup gripping device (201821005125) is driven by a motor; the patent: the negative pressure type reaction tube gripping device and the sample analyzer (201520567608) are driven by air pressure. There are also instruments that do not use a pick-and-place device, but use a relatively complicated and bulky reaction cup dispensing mechanism to place the reaction cup directly at a given position, such as the following patents: "reaction cup guide (201810904429)".
The power gripping and releasing device needs to strictly control the clamping force and has higher requirement on a control system. The use of pneumatically driven pick and place devices can contact the mouth of the reaction cup, with the risk of cross contamination. The reaction cup distribution mechanism is suitable for large-scale high-flux instruments, but the structure is too complex, and the fault of dead locking can occur.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a reaction cup holding and releasing device for an immunoassay analyzer, aiming at the above-mentioned deficiencies in the prior art.
In order to solve the technical problems, the invention adopts the technical scheme that: a reaction cup holding and releasing device for an immunoassay analyzer, comprising: the device comprises a reaction cup, a clamping jaw mechanism for grabbing the reaction cup and a two-dimensional translation mechanism for driving the clamping jaw mechanism to move;
the clamping jaw mechanism comprises a mounting seat, a clamping jaw and a stop block, wherein the clamping jaw is arranged on the mounting seat;
the clamping jaws comprise two symmetrical half clamping jaws which are rotatably arranged on the mounting seat, a clamping cavity for clamping a reaction cup is formed between the first ends of the two half clamping jaws, and a compression spring is connected between the second ends of the two half clamping jaws; a limit groove is formed in the stop block, and the second ends of the two half clamping jaws are arranged in the limit groove.
Preferably, the first ends of the half clamping jaws are provided with clamping arms, the inner sides of the clamping arms are provided with arc-shaped clamping grooves, and when the clamping parts of the two half clamping jaws are closed, the arc-shaped clamping grooves on the inner sides of the two clamping arms form the clamping cavity.
Preferably, the inlet of the clamp arm is provided with a guide slope.
Preferably, the inner side of the second end of the half-clamping jaw is provided with an inclined surface;
and a blind hole for arranging the compression spring is formed on the inclined plane at the inner side of the second end of the half clamping jaw.
Preferably, the lower surface of the half clamping jaw is provided with a groove, and the upper surface of the half clamping jaw is provided with a rotating shaft hole penetrating to the groove;
two mounting holes are formed in the mounting seat; a rotating shaft extending into the mounting hole is inserted into the rotating shaft hole from bottom to top;
an annular clamping groove is formed in the periphery of the upper end of the rotating shaft, extending out of the mounting hole, and a clamping spring is arranged on the annular clamping groove; the lower end of the rotating shaft is accommodated in the groove.
Preferably, the reaction cup comprises a cup head and a cup body connected to the lower part of the cup head, flanges are arranged on the upper parts of the cup head and the cup body, and a cylindrical clamping part is formed between the two flanges.
Preferably, the upper surface of the second end of the half clamping jaw is provided with a guide post, and the inner wall of the upper part of the limit groove is provided with 2 arc-shaped guide grooves for the 2 guide posts of the 2 half clamping jaws to be respectively inserted in a matching manner;
the setting track of the arc-shaped guide groove is consistent with the moving track of the guide column when the half clamping jaw rotates.
Preferably, the guide column comprises a column part connected with the upper surface of the half clamping jaw and a ball part connected with the column part, and the ball part is slidably arranged in the arc-shaped guide groove.
Preferably, a buffer spring is connected between the outer side of the second end of the half clamping jaw and the inner side wall of the limiting groove on the stop block.
Preferably, a polytetrafluoroethylene layer is arranged on the inner wall of the arc-shaped guide groove; and a soft adhesive layer is arranged on the inner wall of the arc-shaped clamping groove.
The invention has the beneficial effects that:
1) the clamping jaw mechanism realizes the grabbing and clamping of the reaction cup by utilizing the spring device, has compact and small structure, does not have a driving device, and does not need a special control system; after the two-dimensional motion mechanism is matched with the two-dimensional motion mechanism for use, only the two-dimensional motion mechanism needs to be controlled, and the control is simple.
2) The clamping force can be changed by adjusting the stiffness coefficient of the compression spring, and the small impact in the clamping process can be ensured.
3) The clamping jaw provided by the invention clamps the sample from the side edge of the reaction cup, is not inserted into the reaction cup and does not contact the cup mouth, so that cross contamination among samples is avoided.
4) The invention has simple structure and high reliability.
Drawings
FIG. 1 is a schematic structural view of a cuvette holding and releasing device for an immunoassay analyzer according to the present invention;
FIG. 2 is a schematic structural view of the jaw mechanism of the present invention;
FIG. 3 is a structural schematic view from the back of the jaw mechanism of the present invention;
FIG. 4 is a bottom perspective structural view of the jaw mechanism of the present invention;
FIG. 5 is a schematic view of a half-jaw configuration in an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a rotating shaft according to the present invention;
FIG. 7 is a schematic view of the structure of the invention with the spindle engaged with the clamping jaw mechanism;
FIG. 8 is a schematic structural view of a reaction cup according to the present invention;
FIG. 9 is a schematic view of a half-jaw configuration in another embodiment of the present invention;
FIG. 10 is a schematic view of a stopper according to an embodiment of the present invention;
FIG. 11 is a schematic view of the engagement of the half-jaws with the stops in an embodiment of the invention.
Description of reference numerals:
1-a jaw mechanism; 10, a mounting seat; 11-a clamping jaw; 12-a stopper; 13-a clamping cavity; 14-compression spring; 15-a rotating shaft; 16-a guide post; 17-a buffer spring; 100-mounting holes; 110-half jaw; 111-a clamping arm; 112-arc clamping groove; 113-a guide ramp; 114-inclined surface; 115-blind hole; 116-a groove; 117-rotating shaft hole; 118-a spring groove; 120-a limiting groove; 121-arc guide groove; 150-ring groove; 151-a snap spring; 160-a column portion; 161-sphere portion;
2-a two-dimensional translation mechanism; 20-an X-axis motor screw mechanism; 21-Z axis motor screw mechanism; 22-a mounting plate; 23-Z axis guide rails; 24-Z axis motors; 25-Z axis slide;
3-reaction cup; 30-cup head; 31-cup body; 32-a flange; 33-a clamping part; 34-projection.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 8, a cuvette holding and releasing device for an immunoassay analyzer according to the present embodiment includes: the device comprises a reaction cup 3, a clamping jaw mechanism 1 for grabbing the reaction cup 3 and a two-dimensional translation mechanism 2 for driving the clamping jaw mechanism 1 to move;
the clamping jaw mechanism 1 comprises a mounting seat 10, a clamping jaw 11 arranged on the mounting seat 10 and a stop block 12;
the clamping jaw 11 comprises two symmetrical half clamping jaws 110 which are rotatably arranged on the mounting base 10, a clamping cavity 13 for clamping the reaction cup 3 is formed between the first ends of the two half clamping jaws 110, and a compression spring 14 is connected between the second ends of the two half clamping jaws 110;
the stop 12 is provided with a limiting groove 120, and the second ends of the two half-clamping jaws 110 are arranged in the limiting groove 120.
The invention can be mainly applied to an immunoassay analyzer for carrying out the grabbing and releasing of the reaction cup 3 so as to transport the reaction cup 3 to a designated operation position. The two-dimensional translation mechanism 2 can adopt a motor screw rod mechanism or a belt wheel driving mechanism and the like for driving the clamping jaw mechanism 1 to perform two-dimensional motion, and the clamping jaw mechanism 1 is provided with no power device, so that the reaction book can be grabbed and placed by means of driving of the compression spring 14 and the two-dimensional translation mechanism 2.
In this embodiment, referring to fig. 2 to 7, the first end of the half-clamping jaw 110 is provided with a clamping arm 111, the inner side of the clamping arm 111 is provided with an arc-shaped clamping groove 112, and when the clamping portions 33 of the two half-clamping jaws 110 are closed, the arc-shaped clamping grooves 112 on the inner sides of the two clamping arms 111 form the clamping cavity 13. The inlet of the holding arm 111 is provided with a guide slope 113 for guiding the cuvette 3 into the holding chamber 13. The inner sides of the second ends of the half-jaws 110 are provided with inclined surfaces 114, so that a V-shaped groove is formed in the middle of the second ends of the two half-jaws 110, and the two half-jaws 110 can rotate to realize closing and opening. The inclined surface 114 on the inner side of the second end of the half-grip 110 is provided with a blind hole 115 for installing the compression spring 14, and the compression spring 14 is compressed after being installed to generate a reaction force. The lower surface of the half clamping jaw 110 is provided with a groove 116, and the upper surface of the half clamping jaw 110 is provided with a rotating shaft hole 117 penetrating to the groove 116; the mounting base 10 is provided with two mounting holes 100; a rotating shaft 15 extending into the mounting hole 100 is inserted into the rotating shaft hole 117 from bottom to top; an annular clamping groove 150 is formed in the periphery, extending out of the mounting hole 100, of the upper end of the rotating shaft 15, and a clamping spring 151 is arranged on the annular clamping groove 150; the lower end of the shaft 15 is received in the recess 116. The lower surface of the clamping jaw 11 is ensured to be flat, and collision with other mechanisms during movement is avoided.
The rotating shaft 15 penetrates through the rotating shaft hole 117 from bottom to top and is inserted into the mounting hole 100, the snap spring 151 is sleeved on the annular clamping groove 150 and is located on the upper surface of the mounting seat 10 to limit axial movement of the rotating shaft 15, and therefore the half clamping jaw 110 can be rotatably connected to the mounting seat 10.
Referring to fig. 8, the reaction cup 3 includes a cup head 30 and a cup body 31 connected to a lower portion of the cup head 30, wherein flanges 32 are provided on upper portions of the cup head 30 and the cup body 31, and a cylindrical clamping portion 33 is formed between the two flanges 32. In a further embodiment, the side wall of the cup 31 is flat. After the reaction between the sample in the reaction cup 3 and the reagent is completed, the measuring probe of the instrument can be tightly attached to the side wall of the reaction cup 3 for measurement, and the loss of the light-emitting signal in the reaction cup 3 due to the imprecise attachment can be avoided. The cup 31 has 4 projections 34 on the upper part for positioning the reaction cup 3 in the apparatus. The mouth of the reaction cup 3 is rectangular, 2 liquid suction needles can be inserted simultaneously, and the liquid suction needles cannot contact and scratch the cup wall. 2 liquid suction needles are inserted simultaneously, so that the reaction cup 3 can complete two operations of liquid suction and filling at one station, and the efficiency of the instrument is effectively improved.
The process of grabbing and placing the reaction cup 3 by the clamping jaw mechanism 1 is as follows: the two-dimensional translation mechanism 2 drives the clamping jaw mechanism 1 to horizontally move to be close to the reaction cup 3, when the clamping jaw 11 contacts the reaction cup 3, the guide inclined plane 113 at the inlet of the clamping jaw 11 is firstly tangent to the cylindrical clamping part 33 of the reaction cup 3, the clamping part 33 extrudes the two half clamping jaws 110, the elasticity of the compression spring 14 is overcome, and the half clamping jaws 110 are gradually pushed away by the reaction cup 3; when the clamping portion 33 of the reaction cup 3 is coincident with the arc inside the clamping jaw 11 (the clamping portion 33 enters the clamping cavity 13), the reaction cup 3 is clamped in place. Thereafter, the two-dimensional mechanism transfers the cuvette 3 to a designated position according to the requirements of the apparatus. After the reaction cup 3 is fixed at the designated position, the two-dimensional mechanism drives the clamping jaw mechanism 1 to move in the opposite direction of the clamping process, and the clamping jaw 11 is opened by the extrusion of the clamping part 33, so that the reaction cup 3 is automatically separated from the clamping jaw 11.
The clamping jaw mechanism 1 is not provided with a power device, and the clamping jaw mechanism 1 and the reaction cup 3 are grabbed and placed by relative motion through the two-dimensional translation mechanism 2. The two half jaws 110 are biased by the compression spring 14 to expand the second end (tail) and contract the first end (front) to clamp the cuvette 3 through the first end. Under the action of the compression spring 14, the tail part is over-opened, and the clamping jaw 11 swings left and right. To avoid this, a stop 12 is provided on the mounting seat 10, a limit groove 120 is provided on the stop 12, and the second ends of the two half-jaws 110 are clamped therein, so that a certain range of rotation can be performed, but the position is limited and the half-jaws do not excessively open. The clamping force can be changed by adjusting the stiffness coefficient of the compression spring 14, so that the impact in the clamping process is ensured to be small.
Wherein the thickness of the inlet of the clamping jaw 11 is less than the height of the clamping part 33 of the reaction cup 3. When clamping the reaction cup 3, certain redundancy is provided, and the clamping jaw 11 is prevented from being influenced to enter the clamping part 33 due to the movement height deviation of the clamping jaw 11.
In this embodiment, the two-dimensional translation mechanism 2 adopts two motor screw mechanisms, and with reference to fig. 1, includes an X-axis motor screw mechanism 20 and a Z-axis motor screw mechanism 21. The two sets of driving mechanisms are similar in structure, and a Z-axis motor screw mechanism 21 is taken as an example for explanation. The Z-axis motor screw mechanism 21 includes an installation plate 22 disposed on the X-axis motor screw mechanism 20, a Z-axis guide rail 23 fixedly connected to the installation plate 22, a Z-axis motor 24 fixedly connected to the installation plate 22, a screw rod (not shown) drivingly connected to the Z-axis motor 24, and a Z-axis slider 25 slidably disposed on the Z-axis guide rail 23 and threadedly engaged with the screw rod. The clamping jaw mechanism 1 is connected to the Z-axis sliding block 25, the X-axis motor screw rod mechanism 20 drives the Z-axis motor screw rod mechanism 21 to move horizontally along the X axis integrally, and the Z-axis motor 24 drives the Z-axis sliding block 25 to move up and down along the Z axis direction through a screw rod, so that the two-dimensional movement of the clamping jaw mechanism 1 in the X, Z axis direction is realized. The X-axis motor screw mechanism 20 also comprises a motor, a screw rod and a slide block, the mounting plate 22 is arranged on the slide block, and the motor drives the slide block to move along the X axis through the screw rod, so that the Z-axis motor screw mechanism 21 on the mounting plate 22 is driven to move along the X axis.
In a further preferred embodiment, referring to fig. 9-11, the upper surface of the second end of the half-clamping jaw 110 is provided with a guide post 16, and the inner wall of the upper portion of the limiting groove 120 is provided with 2 arc-shaped guide grooves 121 for the 2 guide posts 16 of the 2 half-clamping jaws 110 to be respectively inserted in a matching manner; the arc-shaped guide groove 121 is arranged in a track which is consistent with the track of the guide column 16 when the half-clamping jaw 110 rotates. The guide post 16 includes a cylindrical portion 160 connected to the upper surface of the half-jaw 110 and a spherical portion 161 connected to the cylindrical portion 160, the spherical portion 161 being slidably disposed in the arc-shaped guide groove 121. A buffer spring 17 is connected between the outer side of the second end of the half clamping jaw 110 and the inner side wall of the limiting groove 120 on the stop block 12, a spring groove 118 is arranged on the outer side of the second end of the half clamping jaw 110, and one end of the buffer spring 17 is fixedly connected in the spring groove 118. The buffer spring 17 has a smaller spring force than the compression spring 14, and its buffer function.
After long-term use, when the half-clamping jaws 110 are rotated by the compression springs 14 or external force, the two half-clamping jaws 110 may be unevenly stressed or the rotating shaft 15 is loosened, so that the rotating tracks of the two half-clamping jaws 110 are asymmetric (for example, one side of the clamping cavity is expanded and the other side of the clamping cavity is expanded to deform the clamping cavity 13, and the central line of the clamping cavity deviates to influence the alignment with the central line of the reaction cup 3), so that the two half-clamping jaws 110 are rocked or swing left and right, and the grabbing firmness of the reaction is influenced. The present embodiment solves the above problem by providing the arc-shaped guide groove 121 and the guide post 16. The two half clamping jaws 110 are forced to rotate, the guide columns 16 are limited to slide in the arc-shaped guide grooves 121, so that the rotating tracks of the two half clamping jaws 110 are limited, the rotating tracks of the two half clamping jaws 110 are symmetrical, the shaking or the left-right swinging of the half clamping jaws 110 can be greatly reduced, and the clamping effect on the reaction cup 3 is ensured. In addition, for example, when the reaction cup 3 is separated from the clamping jaw 11, under the elastic force of the compression spring 14, the rear ends of the two half clamping jaws 110 are changed from compression and contraction to expansion, the outer walls of the second ends of the two half clamping jaws 110 easily collide with the inner side wall of the limiting groove 120, the two half clamping jaws are easily damaged, the mechanism can shake and generate noise, the impact force in the clamping process can be reduced by arranging the buffer spring 17, the rigid collision between the half clamping jaws 110 and the inner side wall of the limiting groove 120 can be avoided, and the mechanism can be protected.
In a further preferred embodiment, the inner wall of the arc-shaped guide groove 121 is provided with a teflon layer, which can reduce friction and facilitate sliding of the guide post 16 therein; but also can enhance the wear resistance and prolong the service life. The inner wall of the arc-shaped clamping groove 112 is provided with a soft rubber layer, and the soft rubber layer can be silica gel or rubber, so that the friction force between the soft rubber layer and the reaction cup 3 can be increased, and the reaction cup 3 can also be protected.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications may readily be effected by those skilled in the art, so that the invention is not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (10)
1. A reaction cup holding and releasing device for an immunoassay analyzer, comprising: the device comprises a reaction cup, a clamping jaw mechanism for grabbing the reaction cup and a two-dimensional translation mechanism for driving the clamping jaw mechanism to move;
the clamping jaw mechanism comprises a mounting seat, a clamping jaw and a stop block, wherein the clamping jaw is arranged on the mounting seat;
the clamping jaws comprise two symmetrical half clamping jaws which are rotatably arranged on the mounting seat, a clamping cavity for clamping a reaction cup is formed between the first ends of the two half clamping jaws, and a compression spring is connected between the second ends of the two half clamping jaws; a limit groove is formed in the stop block, and the second ends of the two half clamping jaws are arranged in the limit groove.
2. The reaction cup holding and releasing device for the immunoassay analyzer as defined in claim 1, wherein the first ends of the half-jaws are provided with holding arms, the inner sides of the holding arms are provided with arc-shaped holding grooves, and when the holding portions of the two half-jaws are closed, the arc-shaped holding grooves on the inner sides of the two holding arms form the holding cavity.
3. The cuvette holding and releasing device for an immunological analyzer according to claim 2, wherein an entrance of the holding arm is provided with a guide slope.
4. The cuvette holding and releasing device for an immunological analyzer according to claim 2, wherein the inner side of the second end of the half-jaw is provided with an inclined surface;
and a blind hole for arranging the compression spring is formed on the inclined plane at the inner side of the second end of the half clamping jaw.
5. The reaction cup holding and releasing device for the immunoassay analyzer according to claim 4, wherein a groove is formed on the lower surface of the half-clamping jaw, and a rotating shaft hole penetrating to the groove is formed on the upper surface of the half-clamping jaw;
two mounting holes are formed in the mounting seat; a rotating shaft extending into the mounting hole is inserted into the rotating shaft hole from bottom to top;
an annular clamping groove is formed in the periphery of the upper end of the rotating shaft, extending out of the mounting hole, and a clamping spring is arranged on the annular clamping groove; the lower end of the rotating shaft is accommodated in the groove.
6. The cuvette holding and releasing device for an immunoassay analyzer according to claim 1, wherein the cuvette comprises a head and a cup body connected to a lower portion of the head, wherein flanges are provided to upper portions of the head and the cup body, and a cylindrical holding portion is formed between the two flanges.
7. The reaction cup grabbing and releasing device for the immunoassay analyzer according to claim 5, wherein the upper surface of the second end of the half clamping jaw is provided with a guide post, and the inner wall of the upper part of the limiting groove is provided with 2 arc-shaped guide grooves for the 2 guide posts of the 2 half clamping jaws to be respectively inserted in a matching manner;
the setting track of the arc-shaped guide groove is consistent with the moving track of the guide column when the half clamping jaw rotates.
8. The cuvette holding and releasing device for an immunoassay analyzer according to claim 1, wherein the guide post comprises a column portion connected to an upper surface of the half-grip, and a sphere portion connected to the column portion, the sphere portion being slidably disposed in the arc-shaped guide groove.
9. The cuvette holding and releasing device for an immunoassay analyzer according to claim 5, wherein a buffer spring is connected between the outer side of the second end of the half-grip and the inner side wall of the stopper groove of the stopper.
10. The cuvette holding and releasing device for an immunoassay analyzer according to claim 7, wherein a polytetrafluoroethylene layer is provided on the inner wall of the arc-shaped guide groove; and a soft adhesive layer is arranged on the inner wall of the arc-shaped clamping groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910938370.2A CN110646628A (en) | 2019-09-30 | 2019-09-30 | Reaction cup grabbing and placing device for immunoassay analyzer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910938370.2A CN110646628A (en) | 2019-09-30 | 2019-09-30 | Reaction cup grabbing and placing device for immunoassay analyzer |
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| CN110646628A true CN110646628A (en) | 2020-01-03 |
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| CN201910938370.2A Pending CN110646628A (en) | 2019-09-30 | 2019-09-30 | Reaction cup grabbing and placing device for immunoassay analyzer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111229349A (en) * | 2020-03-17 | 2020-06-05 | 盐城工业职业技术学院 | Pipette capable of automatically sleeving and taking suction head |
| CN113252765A (en) * | 2021-06-21 | 2021-08-13 | 南昌大学 | Capillary electrophoresis apparatus |
| CN114317877A (en) * | 2021-12-31 | 2022-04-12 | 马鞍山市雨山冶金新材料有限公司 | Slag blocking device capable of being replaced quickly and online for super-large converter and quick replacement method |
| CN117169487A (en) * | 2023-11-03 | 2023-12-05 | 山东康华生物医疗科技股份有限公司 | Reaction cup grabbing and moving mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117169487B (en) * | 2023-11-03 | 2024-01-23 | 山东康华生物医疗科技股份有限公司 | Reaction cup grabbing and moving mechanism |
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