Sample adding device and sample adding instrument

Abstract

The utility model discloses a sample adding device and a sample adding instrument, the sample adding device comprises a sample adding base, a batch sample adding needle group and an independent sample adding needle group, the batch sample adding needle group is fixedly arranged at the bottom of the sample adding base, and a batch sample adding assembly comprises a plurality of batch sample adding needle rods which are arranged in parallel; the independent sample adding needle group is arranged on one side of the sample adding base in a sliding manner. When the independent sample adding needle group slides to the retraction position, the sample adding parts of all the batch sample adding needle rods exceed the independent sample adding needle group so as to realize batch sample adding; when the independent sample adding needle group slides to the extending position, the independent sample adding needle group exceeds the sample adding part of all the batch sample adding needle rods so as to realize independent sample adding. According to the utility model, the telescopic independent sample adding needle group is arranged, so that the task of adding a plurality of samples can be realized by virtue of the batch sample adding needle group, and the tasks of adding a small amount of samples and supplementing samples at leakage points can also be realized by virtue of the independent sample adding needle group, the types of tasks which can be completed are richer, the application scenes are increased, and the adaptability is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to test instrument technical field, especially a kind of sample adding device and sample adding instrument. BACKGROUND

[0002] Sample adding instrument is accurately controlled, and accurate sampling and spotting of sample are automatically completed, and its advantage is high accuracy, and it is widely used in biochemistry, molecular biology, clinical diagnosis and other fields.

[0003] To improve sample adding efficiency, the existing sample adding instrument mostly uses multiple sample adding heads, and in one movement cycle, multiple sample sampling and multiple target point sample adding tasks can be completed simultaneously, this design can meet large batch sample adding tasks, when a small amount of samples need to be added or missing point samples need to be supplemented, only manual operation can be used, therefore, the existing sample adding instrument cannot complete small amount of sample and sample supplement tasks, and the application scenarios that can be met are limited, and the adaptability is poor. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of sample adding device and sample adding instrument, solve the technical problem that the adaptability of existing sample adding instrument is poor.

[0005] To achieve the above-mentioned purpose, the utility model provides a kind of sample adding device, comprising:

[0006] Sample adding base;

[0007] Batch sample adding needle group, batch sample adding needle group is fixedly arranged at the bottom of sample adding base;Batch sample adding assembly includes several parallelly arranged batch sample adding needle rods;

[0008] Single sample adding needle group, single sample adding needle group is slidably arranged on one side of sample adding base;

[0009] When single sample adding needle group slides to retracted position, the sample adding parts of all batch sample adding needle rods are arranged beyond single sample adding needle group to realize batch sample adding;

[0010] When single sample adding needle group slides to extended position, single sample adding needle group is arranged beyond the sample adding parts of all batch sample adding needle rods to realize single sample adding.

[0011] Preferably, it further comprises:

[0012] Locking assembly, locking assembly is slidably matched with single sample adding needle group;

[0013] When single sample adding needle group reaches retracted position or extended position, locking assembly is in locking state, and locking assembly is used to limit the sliding of single sample adding needle group;

[0014] When the single sample needle group is located between the retraction position and the extension position, the locking assembly is in the unlocked state, and the locking assembly is used to push the single sample needle group to slide.

[0015] Preferably, the sample base is provided with a locking accommodation groove for accommodating the locking assembly, and the groove opening of the locking accommodation groove is fixedly provided with a locking guide plate; the locking assembly comprises:

[0016] An adjusting slider is slidably arranged in the locking accommodation groove along a first direction; the adjusting slider and the single sample needle group are provided with a mutual cooperation of a pushing protrusion and an inclined sliding groove;

[0017] A retraction locking block is slidably arranged at one end of the locking guide plate along a second direction; the retraction locking block has a retraction locking tongue which cooperates with a retraction locking groove arranged on the adjusting slider;

[0018] An extension locking block is slidably arranged at the other end of the locking guide plate along the second direction; the extension locking block has an extension locking tongue which cooperates with an extension locking groove arranged on the adjusting slider;

[0019] Wherein, the first direction is parallel to the sliding direction of the single sample needle group, and the second direction is perpendicular to the sliding direction of the single sample needle group;

[0020] When the single sample needle group reaches the retraction position, the retraction locking tongue abuts against the retraction locking groove, and the pushing protrusion keeps cooperating with the bottom end of the inclined sliding groove, and the single sample needle group keeps staying at the retraction position;

[0021] When the retraction locking tongue is separated from the retraction locking groove, the adjusting slider retracts in the direction away from the single sample needle group, and the pushing protrusion pushes the single sample needle group to slide from the retraction position to the extension position through the inclined sliding groove;

[0022] When the single sample needle group reaches the extension position, the extension locking tongue abuts against the extension locking groove, and the pushing protrusion keeps cooperating with the top end of the inclined sliding groove, and the single sample needle group keeps staying at the extension position;

[0023] When the extension locking tongue is separated from the extension locking groove, the adjusting slider extends in the direction close to the single sample needle group, and the pushing protrusion pushes the single sample needle group to slide from the extension position to the retraction position through the inclined sliding groove.

[0024] Preferably, the locking assembly further comprises:

[0025] A retraction support plate is fixedly arranged at the top end of the locking guide plate; the retraction locking block is retractably arranged in the retraction support plate along the second direction;

[0026] An extension support plate is fixedly arranged at the bottom end of the locking guide plate; the extension locking block is retractably arranged in the retraction support plate along the second direction.

[0027] Preferably, the two ends of the locking guide plate are respectively formed with a retraction step surface and an extension step surface; when the retraction lock tongue abuts against the retraction lock groove, the retraction step surface is used to abut against the retraction locking block; when the extension lock tongue abuts against the extension lock groove, the extension step surface is used to abut against the extension locking block.

[0028] Preferably, the locking assembly further comprises:

[0029] The sliding block elastic member is sleeved on the telescopic guide rod provided with the adjusting sliding block; the telescopic guide rod is slidably connected with the sample adding base; when the extension lock tongue is separated from the extension lock groove, the sliding block elastic member is used to push the adjusting sliding block to extend towards the direction of approaching the single sample adding needle group by the elastic force.

[0030] Preferably, the locking assembly further comprises:

[0031] The switching assembly is used to switch the working state of the locking assembly, and the working state includes a locking state and an unlocking state;

[0032] When the single sample adding needle group reaches the retraction position or the extension position, the switching assembly is used to switch the locking assembly from the unlocking state to the locking state;

[0033] When the single sample adding needle group is located between the retraction position and the extension position, the switching assembly is used to switch the locking assembly from the locking state to the unlocking state.

[0034] Preferably, the switching assembly comprises:

[0035] The movable push plate;

[0036] The locking block push rod is vertically fixed on the movable push plate; the end of the locking block push rod is provided with a roller follower;

[0037] When the locking block push rod is inserted into the retraction release hole provided on the sample adding base, the roller follower is embedded into the retraction guide groove provided on the retraction locking block, the locking block push rod pushes the retraction locking block away from the adjusting sliding block, and the retraction lock tongue is separated from the retraction lock groove;

[0038] When the locking block push rod is inserted into the extension release hole provided on the sample adding base, the roller follower is embedded into the extension guide groove provided on the extension locking block, the locking block push rod pushes the extension locking block away from the adjusting sliding block, and the extension lock tongue is separated from the extension lock groove.

[0039] Preferably, the switching assembly further comprises:

[0040] The sliding block push rod is vertically fixed on the movable push plate and is parallel to the locking block push rod; the locking block push rod is arranged beyond the sliding block push rod; when the retraction lock tongue is separated from the retraction lock groove, the sliding block push rod is inserted into the push guide hole provided on the sample adding base, and the sliding block push rod pushes the adjusting sliding block to retract away from the single sample adding needle group.

[0041] The utility model also provides a sample adding instrument, including above -mentioned sample adding device.

[0042] The utility model provides a sample adding instrument, including above -mentioned sample adding device.

[0043] Relative to the background art, the utility model optimizes sample adding device, newly sets up single sample adding needle group, single sample adding needle group and the slideable in the one side of sample adding base, batch sample adding needle group is fixed in the bottom of sample adding base.

[0044] When single sample adding needle group slides to retract position, the sample adding part of all batch sample adding needle rods is arranged beyond single sample adding needle group, realizes batch sample adding, when single sample adding needle group slides to the position of protruding, single sample adding needle group is arranged beyond the sample adding part of all batch sample adding needle rods to realize single sample adding. The utility model discloses a telescopic single sample adding needle group, can realize multiple sample adding tasks by batch sample adding needle group, and can realize a small amount of sample adding and leak point sample supplementing tasks by single sample adding needle group, the type of task that can be completed is rich, and the application scene increases, effectively improves adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description is only the embodiment of the utility model, and for ordinary skilled person in the art, under the premise of not creating laboriously, other drawings can be obtained according to the provided drawing.

[0046] Figure 1 It is the schematic diagram of the sample adding device provided in the embodiment of the utility model;

[0047] Figure 2 It is the explosion map of Figure 1 ;

[0048] Figure 3 It is the explosion map of sample adding base and adjusting sliding block in Figure 1 ;

[0049] Figure 4 It is the assembly drawing of locking switching assembly and locking guide plate in Figure 1 ;

[0050] Figure 5 It is the explosion map of Figure 4 ;

[0051] Figure 6 It is the schematic diagram of single sample adding needle group in Figure 1 ;

[0052] Figure 7for Figure 6 Exploded view;

[0053] Figure 8 for Figure 7 The main view;

[0054] Figure 9 for Figure 1 A state diagram showing the locking switching component maintaining the retracted locking state when the individual sample dispensing needle assembly is in the retracted position;

[0055] Figure 10 for Figure 9 Another view;

[0056] Figure 11 for Figure 9 Another view;

[0057] Figure 12 for Figure 1 State diagram of the locking switching component when it switches from the retracted locking state to the unlocked state;

[0058] Figure 13 for Figure 12 Another view;

[0059] Figure 14 for Figure 12 Another view;

[0060] Figure 15 for Figure 1 A diagram showing the state of the slider push rod pushing the adjusting slider when the locking switching component is in the unlocked state.

[0061] Figure 16 for Figure 15 Another view;

[0062] Figure 17 for Figure 15 Another view;

[0063] Figure 18 for Figure 1 State diagram of the locking switching component when it switches from the unlocked state to the extended locking state;

[0064] Figure 19 for Figure 18 Another view;

[0065] Figure 20 for Figure 18 Another view;

[0066] Figure 21 for Figure 1 The state diagram of the locking switch component when the individual sample dispensing needle assembly is in the extended position and the locking state is in the extended state;

[0067] Figure 22 Another view of Figure 18 ;

[0068] Figure 23 Yet another view of Figure 18 ;

[0069] Figure 24 Another view of Figure 1 ;

[0070] Figure 25 Another view of Figure 12 ;

[0071] Figure 26 Yet another view of Figure 12 ;

[0072] Figure 27 Another view of Figure 1 ;

[0073] Figure 28 Another view of Figure 27 ;

[0074] Figure 29 Yet another view of Figure 27 ;

[0075] Figure 30 Another view of Figure 1 ;

[0076] Figure 31 Another view of Figure 30 ;

[0077] Figure 32 Yet another view of Figure 30 .

[0078] The reference signs are as follows:

[0079] Sample base 1, separate sample needle group 2, locking assembly 3, switching assembly 4

[0080] Retraction release hole 11, extension release hole 12, push guiding hole 13, locking accommodating groove 14, locking guiding plate 15

[0081] Retraction step surface 151, extension step surface 152, retraction limiting protrusion 153, extension limiting protrusion 154

[0082] Separate sample slide 21, separate sample needle rod 22, needle rod guiding slider 23, buffer elastic member 24

[0083] Inclined chute 211, needle bar guide slot 212

[0084] Limiting check ring 221

[0085] Needle bar limiting hole 231

[0086] Adjusting slider 31, retraction locking block 32, extension locking block 33, slider elastic member 34, retraction support plate 35, retraction elastic member 36, extension support plate 37, extension elastic member 38

[0087] Pushing protrusion 311, retraction locking slot 312, extension locking slot 313, telescopic guide rod 314

[0088] Retraction locking tongue 321, retraction guide slot 322

[0089] Extension locking tongue 331, extension guide slot 332

[0090] Retraction guide rod 351,

[0091] Extension guide rod 371

[0092] Movable push plate 41, locking block push rod 42, slider pushing rod 43

[0093] Roller follower 421 DETAILED DESCRIPTION

[0094] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0095] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0096] The embodiments of the present application disclose a sample adding device, as shown in the accompanying drawings Figures 1 to 5As shown, it comprises a sample adding base 1, a batch sample adding needle group and a single sample adding needle group 2, the batch sample adding needle group is fixedly arranged on the sample adding base 1, and the batch sample adding needle group comprises a plurality of parallel arranged batch sample adding needle rods.

[0097] The single sample adding needle group 2 is slidably arranged on one side of the sample adding base 1, so that the single sample adding needle group 2 can slide relative to the batch sample adding needle group.

[0098] When the single sample adding needle group 2 slides to the retracted position, the sample adding parts of all the batch sample adding needle rods of the batch sample adding needle group are arranged beyond the single sample adding needle group 2, so that batch sample adding is realized; when the single sample adding needle group 2 slides to the extended position, the sample adding parts of all the batch sample adding needle rods arranged beyond the single sample adding needle group 2, so that single sample adding is realized.

[0099] The single sample adding needle group 2 can be retracted and extended, so that multiple sample adding tasks can be realized by the batch sample adding needle group, and a small amount of sample adding and missing point sample supplementing tasks can be realized by the single sample adding needle group 2, the types of tasks that can be completed are rich, the application scenarios are increased, and the adaptability is effectively improved.

[0100] The sample adding device further comprises a locking assembly 3, which is slidably connected with the single sample adding needle group 2 and is used for locking the single sample adding needle group 2 in the retracted position or the extended position.

[0101] When the single sample adding needle group 2 reaches the retracted position, the locking assembly 3 is switched to the locking state, and the locking assembly 3 is used for limiting the sliding of the single sample adding needle group 2, so that the single sample adding needle group 2 is kept in the retracted position, and only the batch sample adding needle group is used for batch sample adding.

[0102] When the single sample adding needle group 2 is between the retracted position and the extended position, the locking assembly 3 is switched to the unlocking state, and the locking assembly 3 is used for pushing the single sample adding needle group 2 to slide relative to the batch sample adding needle group, so that the single sample adding needle group 2 reciprocally slides between the retracted position and the extended position, and the position of the single sample adding needle group 2 is adjusted.

[0103] When the single-sample needle group 2 reaches the extended position, the locking assembly 3 is switched to the locking state, the locking assembly 3 is used to limit the single-sample needle group 2 to continue to slide, so that the single-sample needle group 2 stays in the extended position, and only the single-sample needle group 2 carries out single-sample adding.

[0104] The sample adding base 1 is provided with a locking accommodating groove 14 for accommodating the locking assembly 3, and the slot of the locking accommodating groove 14 is fixedly provided with a locking guide plate 15 for guiding the sliding of the locking assembly 3 in the locking accommodating groove 14.

[0105] The locking assembly 3 comprises an adjusting sliding block 31, a retraction locking block 32 and an extension locking block 33, and the adjusting sliding block 31 is slidably arranged in the locking accommodating groove 14 along a first direction. The first direction herein refers to the direction perpendicular to the sliding direction of the single-sample needle group 2, that is, the Y-axis direction shown in the coordinate system shown in the accompanying drawings. Figure 1 The adjusting sliding block 31 and the single-sample needle group 2 are provided with a pushing protrusion 311 and an inclined sliding groove 211 that cooperate with each other, so that the adjusting sliding block 31 adjusts the position of the single-sample needle group 2. As a preferred embodiment, the adjusting sliding block 31 is provided with the pushing protrusion 311 in an inclined manner, and the side of the single-sample needle group 2 facing the adjusting sliding block 31 is provided with the inclined sliding groove 211, and the pushing protrusion 311 and the inclined sliding groove 211 are slidably matched, when the pushing protrusion 311 moves along the Y-axis direction with the adjusting sliding block 31, the pushing protrusion 311 provides a pushing force for the single-sample needle group 2 through the inclined sliding groove 211, and pushes the single-sample needle group 2 to move along the Z-axis direction relative to the batch-sample needle group. The inclination angles of the pushing protrusion 311 and the inclined sliding groove 211 are adaptively adjusted according to the extension length of the single-sample needle group 2, and the greater the extension length, the greater the inclination angle, which is not specifically limited here.

[0106] The retraction locking block 32 and the extension locking block 33 are parallel to each other and are respectively slidably arranged at two ends of the locking guide plate 15 along a second direction. The second direction herein refers to the direction parallel to the sliding direction of the single-sample needle group 2, that is, the Z-axis direction shown in the coordinate system shown in the accompanying drawings. Figure 1 That is, the retraction locking block 32 is retractably arranged parallel to the sliding direction of the single-sample needle group 2, that is, the retraction locking block 32 is retractably arranged along the Z-axis direction. The extension locking block 33 is retractably arranged parallel to the sliding direction of the single-sample needle group 2, that is, the extension locking block 33 is retractably arranged along the Z-axis direction.

[0107] The retraction locking block 32 has a retraction locking tongue 321 on the side facing the adjusting slider 31, and the adjusting slider 31 is provided with a retraction locking groove 312, and the retraction locking tongue 321 is matched with the retraction locking groove 312. The extension locking block 33 has an extension locking tongue 331, and the adjusting slider 31 is provided with an extension locking groove 313, and the extension locking tongue 331 is matched with the extension locking groove 313. Specifically, the retraction locking groove 312 and the extension locking groove 313 are both arranged on the same side of the adjusting slider 31 and are arranged in an up-down distribution, and extend along the two opposite sides of the adjusting slider 31. The length of the extension locking groove 313 is greater than the length of the retraction locking groove 312.

[0108] When the single sample needle group 2 reaches the retraction position, the retraction locking tongue 321 is in abutment with the retraction locking groove 312, at this time, the working state of the locking assembly 3 is in the locked state, the push protrusion 311 remains matched with the bottom end of the inclined sliding groove 211, limits the sliding of the single sample needle group 2, makes the single sample needle group 2 stay in the retraction position, ensures that the sample adding parts of all the batch sample needle rods of the batch sample needle group are arranged beyond the single sample needle group 2, and batch sampling is realized.

[0109] When the retraction locking tongue 321 is separated from the retraction locking groove 312, at this time, the working state of the locking assembly 3 is in the unlocked state, the adjusting slider 31 is retracted in the direction away from the single sample needle group 2 under the pushing of the slider push rod 43, the push protrusion 311 moves right along the Y axis with the adjusting slider 31, the push protrusion 311 pushes the single sample needle group 2 to slide along the Z axis from the retraction position to the extension position by the inclined sliding groove 211, until the extension position is reached.

[0110] When the single sample needle group 2 reaches the extension position, the extension locking tongue 331 is in abutment with the extension locking groove 313, at this time, the working state of the locking assembly 3 is in the locked state, the push protrusion 311 remains matched with the top end of the inclined sliding groove 211, limits the sliding of the single sample needle group 2, makes the single sample needle group 2 stay in the extension position, ensures that the single sample needle group 2 is arranged beyond the sample adding parts of all the batch sample needle rods of the batch sample needle group, and single sampling is realized.

[0111] When the extension locking tongue 331 is separated from the extension locking groove 313, at this time, the working state of the locking assembly 3 is in the unlocked state, the adjusting slider 31 is extended in the direction close to the single sample needle group 2 under the pushing of the slider elastic member 34, the push protrusion 311 moves left along the Y axis with the adjusting slider 31, the push protrusion 311 pushes the single sample needle group 2 to slide along the Z axis from the extension position to the retraction position by the inclined sliding groove 211, until the retraction position is reached.

[0112] The locking assembly 3 further comprises a retracting support plate 35 and an extending support plate 37, the retracting support plate 35 is fixedly arranged at the top end of the locking guide plate 15, and the extending support plate 37 is fixedly arranged at the bottom end of the locking guide plate 15; the retracting locking block 32 is arranged in the retracting support plate 35 in the second direction, and the extending locking block 33 is arranged in the extending support plate 37 in the second direction.

[0113] As a preferred embodiment, the retracting support plate 35 and the extending support plate 37 are parallel to each other. The side of the retracting support plate 35 facing the locking guide plate 15 is protruded to form a lower limiting boss, which cooperates with the upper limiting groove arranged at the top end of the locking guide plate 15 to limit the movement of the retracting support plate 35 relative to the locking guide plate 15 in the X-axis direction, ensuring the reliable fixation of the retracting support plate 35. Similarly, the side of the extending support plate 37 facing the locking guide plate 15 is protruded to form an upper limiting boss, which cooperates with the lower limiting groove arranged at the bottom end of the locking guide plate 15 to limit the movement of the extending support plate 37 relative to the locking guide plate 15 in the X-axis direction, ensuring the reliable fixation of the extending support plate 37.

[0114] The retracting support plate 35 is vertically provided with a retracting guide rod 351, which is slidably matched with the retracting locking block 32 in the Z-axis direction. The extending support plate 37 is vertically provided with an extending guide rod 371, which is slidably matched with the extending locking block 33 in the Z-axis direction. As a preferred embodiment, the retracting support plate 35 is provided with one retracting guide rod 351 on each side, ensuring that the retracting locking block 32 is uniformly stressed at both ends, avoiding the jamming of the retracting locking block 32 in the Z-axis direction. The extending support plate 37 is also provided with one extending guide rod 371 on each side, ensuring that the extending locking block 33 is uniformly stressed at both ends, avoiding the jamming of the extending locking block 33 in the Z-axis direction.

[0115] The retracting elastic member 36 is sleeved on the retracting guide rod 351 and elastically abuts against the retracting locking block 32. When the locking block push rod 42 pushes the retracting locking block 32 away from the adjusting slider 31, the retracting elastic member 36 is deformed under compression. When the pushing protrusion 311 reaches the bottom end of the inclined sliding groove 211, the retracting elastic member 36 restores the elastic deformation, and the retracting elastic member 36 pushes the retracting locking block 32 to automatically slide by the elastic force, until the retracting locking tongue 321 abuts against the retracting locking groove 312, and the locking assembly 3 is switched to the locked state.

[0116] The extension elastic member 38 is sleeved on the extension guide rod 371 and elastically abuts against the extension locking block 33. When the locking block push rod 42 pushes the extension locking block 33 away from the adjusting slide block 31, the extension elastic member 38 is compressed and deformed. When the pushing protrusion 311 reaches the top end of the inclined sliding groove 211, the extension elastic member 38 restores the elastic deformation, and the extension elastic member 38 pushes the extension locking block 33 to slide by the elastic force until the extension locking tongue 331 abuts against the extension locking slot 313, and the locking assembly 3 is switched to the locked state.

[0117] The setting of the retraction elastic member 36 and the extension elastic member 38 can automatically lock the adjusting slide block 31 when the adjusting slide block 31 moves to the retracted position or the extended position, without the need for another driving member, and the operation is more convenient, and the structure is simpler.

[0118] The two ends of the locking guide plate 15 are respectively formed with a retraction step surface 151 and an extension step surface 152. When the retraction locking tongue 321 abuts against the retraction locking slot 312, the retraction step surface 151 abuts against the retraction locking block 32 to limit the position of the retraction locking block 32, so as to avoid the depth of the retraction locking tongue 321 embedded in the retraction locking slot 312 being too deep. When the extension locking tongue 331 abuts against the extension locking slot 313, the extension step surface 152 is used to abut against the extension locking block 33 to limit the position of the extension locking block 33, so as to avoid the depth of the extension locking tongue 331 embedded in the extension locking slot 313 being too deep. The locking guide plate 15 can not only guide the sliding of the adjusting slide block 31, but also limit the adjusting slide block 31 from being separated from the retraction locking block 32 and the extension locking block 33.

[0119] The two sides of the locking guide plate 15 are respectively formed with a retraction limiting protrusion 153 and an extension limiting protrusion 154. In the direction perpendicular to the single sample adding needle group 2, that is, in the Y-axis direction, the retraction limiting protrusion 153 abuts against the retraction locking tongue 321, and the extension limiting protrusion 154 abuts against the extension locking tongue 331, so as to avoid the retraction locking block 32 and the extension locking block 33 moving along the Z-axis direction to make the retraction locking tongue 321 unable to align with the retraction locking slot 312, or make the extension locking tongue 331 unable to align with the extension locking slot 313.

[0120] One end of the adjusting slide block 31 is fixedly provided with a telescopic guide rod 314, the telescopic guide rod 314 is slidably connected with the sample adding base 1, one side of the sample adding base 1 away from the single sample adding needle group 2 is provided with a guide sliding groove, and the telescopic guide rod 314 is slidably inserted into the guide sliding groove and used for guiding the adjusting slide block 31 to reciprocally slide in the Y-axis direction. The locking assembly 3 further includes a slide block elastic member 34, and the slide block elastic member 34 is sleeved on the telescopic guide rod 314 provided on the adjusting slide block 31.

[0121] When the extension lock tongue 331 abuts against the extension lock slot 313, the slider spring 34 is connected between the sample adding base 1 and the adjusting slider 31; when the extension lock tongue 331 is separated from the extension lock slot 313, the slider spring 34 restores the elastic deformation to provide a pushing force for the adjusting slider 31 to extend in the direction of approaching the single sample adding needle group 2. When the locking assembly 3 is in the unlocked state, the slider spring 34 can make the adjusting slider 31 automatically slide the single sample adding needle group 2 from the retracted position to the extended position, without the need for another driving member such as a push rod, and the structure is simplified. The slider spring 34 is preferably a common cylindrical spring, but is not limited thereto.

[0122] The sample adding device further comprises a switching assembly 4 for switching the working state of the locking assembly 3. When the single sample adding needle group 2 reaches the retracted position or the extended position, the switching assembly 4 is used to switch the locking assembly 3 from the unlocked state to the locked state; when the single sample adding needle group 2 is located between the retracted position and the extended position, the switching assembly 4 is used to switch the locking assembly 3 from the locked state to the unlocked state.

[0123] The switching assembly 4 comprises a movable push plate 41 and a locking block push rod 42, the locking block push rod 42 is vertically fixed to the movable push plate 41; the end of the locking block push rod 42 has a roller follower 421; the retraction locking block 32 is provided with a retraction guide slot 322, and the roller follower 421 can roll along the retraction guide slot 322.

[0124] When the locking block push rod 42 is inserted from the retraction release hole 11 provided on the sample adding base 1, the roller follower 421 is embedded in the retraction guide slot 322 provided on the retraction locking block 32, and under the guidance of the retraction guide slot 322, the locking block push rod 42 pushes the retraction locking block 32 away from the adjusting slider 31, the retraction lock tongue 321 is separated from the retraction lock slot 312, the locking assembly 3 is switched from the locked state to the unlocked state, the adjusting slider 31 is retracted in the direction away from the single sample adding needle group 2 under the pushing of the slider push rod 43, the push protrusion 311 pushes the single sample adding needle group 2 along the Z-axis downward from the retracted position to the extended position through the inclined sliding slot 211, until the single sample adding needle group 2 reaches the extended position.

[0125] When the lock block push rod 42 is inserted from the extension release hole 12 provided on the sample adding base 1, the roller follower 421 is embedded in the extension guide groove 332 provided on the extension lock block 33, and under the guidance of the extension guide groove 332, the lock block push rod 42 pushes the extension lock block 33 away from the adjusting slide block 31, the extension lock tongue 331 is separated from the extension lock slot 313, and the locking assembly 3 is switched from the locked state to the unlocked state. The adjusting slide block 31 is pushed by the slide elastic piece 34 to the direction of approaching the separate sample adding needle group 2, and the push protrusion 311 pushes the separate sample adding needle group 2 along the Z-axis from the extension position to the retraction position through the inclined sliding groove 211, until the separate sample adding needle group 2 reaches the retraction position.

[0126] The switching assembly 4 further comprises a slide block push rod 43 which is fixedly connected with the lock block push rod 42 and parallel to the lock block push rod 42. However, it should be noted that the lock block push rod 42 is arranged beyond the slide block push rod 43. When the retraction lock tongue 321 is separated from the retraction lock slot 312, the slide block push rod 43 is inserted from the push guide hole 13 provided on the sample adding base 1, and the slide block push rod 43 pushes the adjusting slide block 31 to retract away from the separate sample adding needle group 2, so that the slide block push rod 43 can push the adjusting slide block 31 to retract and reset along the Y-axis direction when the locking assembly 3 is switched to the unlocked state. Thus, the slide block push rod 43 and the lock block push rod 42 can share a set of drive, without the need for separate drive, which is beneficial to simplify the structure of the whole equipment and reduce the production cost.

[0127] As shown in the accompanying drawings, Figures 6 to 8 The separate sample adding needle group 2 comprises a separate sample adding slide base 21, a separate sample adding needle rod 22, a needle rod guide slide block 23 and a buffer elastic piece 24.

[0128] The separate sample adding slide base 21 is provided with a needle rod guide groove 212, and the groove bottom of the needle rod guide groove 212 forms a limiting boss. The separate sample adding needle rod 22 is slidably inserted into the needle rod guide groove 212 along the Z-axis. The separate sample adding needle rod 22 is fixedly provided with a limiting stop ring 221 which abuts against the limiting boss to limit the separate sample adding needle rod 22 from separating from the separate sample adding slide base 21 along the Z-axis.

[0129] The needle rod guide slide block 23 is fixedly arranged on the top of the separate sample adding slide base 21, and is slidably arranged in the sample adding guide groove provided on the sample adding base 1, so that the sample adding guide groove cooperates with the locking guide plate 15 to guide the separate sample adding slide base 21 to slide along the Z-axis. The needle rod guide slide block 23 is fixed on the top of the separate sample adding slide base 21 by means of a fastening screw. It should be noted that the top of the needle rod guide slide block 23 is formed with a waist-shaped sunken groove for accommodating the head of the fastening screw.

[0130] The needle bar guide slider 23 has a needle bar limiting hole 231. The individual sample dispensing needle bar 22 can slide through the needle bar limiting hole 231, which restricts the radial swing of the needle bar limiting hole 231 and restricts the rotation of the needle bar limiting hole 231 around its own center, allowing the individual sample dispensing needle bar 22 to move up and down along the needle bar limiting hole 231. The needle bar limiting hole 231 is preferably a semi-circular hole, but is not limited to this.

[0131] A buffer elastic element 24 is sleeved on the individual sample dispensing needle bar 22, and both ends of the buffer elastic element 24 abut against the needle bar guide slider 23 and the limiting retaining ring 221, respectively. It is used to provide buffer for the individual sample dispensing needle bar 22 during individual sample dispensing, so as to prevent the individual sample dispensing needle bar 22 from being damaged due to excessive impact. The buffer elastic element 24 is specifically a common cylindrical spring, which is not specifically limited here.

[0132] The working principle of the sampling device provided by this utility model is as follows:

[0133] When the individual sample dispensing needle group 2 reaches the retraction position, as shown in the attached... Figures 9 to 11 As shown, the retractable locking tongue 321 abuts against the retractable locking groove 312. At this time, the locking component 3 is in the locked state. The pushing protrusion 311 is engaged with the bottom end of the inclined slide groove 211, which restricts the sliding of the individual sample dispensing needle group 2 and keeps the individual sample dispensing needle group 2 in the retracted position. This ensures that the sample dispensing parts of all batch sample dispensing needles of the batch sample dispensing needle group exceed the setting of the individual sample dispensing needle group 2, thereby realizing batch sample dispensing.

[0134] Insert the locking block push rod 42 into the retraction release hole 11 provided on the sample base 1, as shown in the attached figure. Figures 12 to 14 As shown, the roller follower 421 is embedded in the retraction guide groove 322 of the retraction locking block 32. Guided by the retraction guide groove 322, the locking block push rod 42 pushes the retraction locking block 32 away from the adjusting slider 31, and the retraction lock tongue 321 separates from the retraction lock groove 312. The locking assembly 3 switches from the locked state to the unlocked state. At the same time, the slider push rod 43 is inserted into the push guide hole 13 of the sample base 1, as shown in the attached figure. Figures 15 to 17 As shown, the adjusting slider 31 retracts away from the individual sample needle assembly 2 under the push of the slider push rod 43. The push protrusion 311 pushes the individual sample needle assembly 2 downward along the Z-axis from the retracted position to the extended position through the inclined slide groove 211 until the individual sample needle assembly 2 reaches the extended position.

[0135] When the individual sample dispensing needle group 2 reaches the extended position, as shown in the attached... Figures 18 to 20As shown in the figure, the extended locking tongue 331 is in abutment with the extended locking slot 313, at this time the working state of the locking assembly 3 is the locking state, the push protrusion 311 keeps cooperating with the top end of the inclined sliding groove 211, limiting the sliding of the single sample adding needle group 2, making the single sample adding needle group 2 stay in the extended position, ensuring that the single sample adding needle group 2 is arranged beyond the sample adding position of the whole batch sample adding needle rod of the batch sample adding needle group, realizing the single sample adding, as shown in the figure Figures 21 to 23 As shown in the figure.

[0136] Insert the locking block push rod 42 into the extended release hole 12 arranged on the sample adding base 1, as shown in the figure Figures 24 to 26 As shown in the figure, the roller driven part 421 is embedded in the extended guide slot 332 arranged on the extended locking block 33, under the guidance of the extended guide slot 332, the locking block push rod 42 pushes the extended locking block 33 away from the adjusting sliding block 31, the extended locking tongue 331 is separated from the extended locking slot 313, and the locking assembly 3 is switched from the locking state to the unlocking state, as shown in the figure Figures 27 to 29 As shown in the figure, the adjusting sliding block 31 is extended to the direction close to the single sample adding needle group 21 under the pushing of the sliding block elastic part 34, the push protrusion 311 pushes the single sample adding needle group 2 to slide along the Z axis from the extended position to the retracted position upwards through the inclined sliding groove 211, until the single sample adding needle group 2 reaches the retracted position; the locking block push rod 42 is withdrawn from the extended release hole 12, as shown in the figure Figures 30 to 32 As shown in the figure.

[0137] The utility model also provides a kind of sample adding instrument, including above-mentioned sample adding device, with identical beneficial effect.

[0138] It should be noted that in the present specification, relational terms such as first and second are used solely to distinguish one entity from another entity, without necessarily requiring or implying any such actual relationship or order between such entities.

[0139] The principles and implementation modes of the present utility model are described by applying specific examples herein, and the above example description is only used to help understand the method and core idea of the present utility model. It should be pointed out that for ordinary skilled persons in the technical field, without departing from the principles of the present utility model, the present utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A sample application device characterized by, The application relates to a sample adding device, which comprises the following parts: a sample adding base (1); a batch sample adding needle group, which is fixedly arranged at the bottom of the sample adding base (1); the batch sample adding assembly comprises a plurality of parallel arranged batch sample adding needle rods; a single sample adding needle group (2), which is slidably arranged at one side of the sample adding base (1); when the single sample adding needle group (2) slides to a retracted position, the sample adding parts of all the batch sample adding needle rods are arranged beyond the single sample adding needle group (2) to realize batch sample adding; when the single sample adding needle group (2) slides to an extended position, the single sample adding needle group (2) is arranged beyond the sample adding parts of all the batch sample adding needle rods to realize single sample adding.

2. The sample application device of claim 1, wherein, The application further comprises: a locking assembly (3), which is slidably matched with the single sample adding needle group (2); when the single sample adding needle group (2) reaches the retracted position or the extended position, the locking assembly (3) is in a locked state, and the locking assembly (3) is used for limiting the sliding of the single sample adding needle group (2); when the single sample adding needle group (2) is located between the retracted position and the extended position, the locking assembly (3) is in an unlocked state, and the locking assembly (3) is used for pushing the single sample adding needle group (2) to slide.

3. The sample application device of claim 2, wherein, The sample adding base (1) is provided with a locking accommodating groove (14) for accommodating the locking assembly (3), and the groove opening of the locking accommodating groove (14) is fixedly provided with a locking guide plate (15); the locking assembly (3) comprises: an adjusting sliding block (31), which is slidably arranged in the locking accommodating groove (14) along a first direction; the adjusting sliding block (31) and the single sample adding needle group (2) are provided with mutually matched push protrusions (311) and inclined sliding grooves (211); a retraction locking block (32), which is slidably arranged at one end of the locking guide plate (15) along a second direction; the retraction locking block (32) is provided with a retraction locking tongue (321), which is matched with a retraction locking groove (312) arranged on the adjusting sliding block (31); an extension locking block (33), which is slidably arranged at the other end of the locking guide plate (15) along the second direction; the extension locking block (33) is provided with an extension locking tongue (331), which is matched with an extension locking groove (313) arranged on the adjusting sliding block (31); wherein the first direction is perpendicular to the sliding direction of the single sample adding needle group (2), and the second direction is parallel to the sliding direction of the single sample adding needle group (2); when the single sample adding needle group (2) reaches the retracted position, the retraction locking tongue (321) is abutted against the retraction locking groove (312), the push protrusion (311) is kept matched with the bottom end of the inclined sliding groove (211), and the single sample adding needle group (2) is kept at the retracted position; When the retraction lock tongue (321) is separated from the retraction lock slot (312), the adjusting slider (31) retracts towards the direction away from the single sample adding needle group (2), the push protrusion (311) pushes the single sample adding needle group (2) to slide from the retraction position to the extension position through the inclined sliding slot (211); When the single sample adding needle group (2) reaches the extension position, the extension lock tongue (331) is in abutment with the extension lock slot (313), the push protrusion (311) is kept in cooperation with the top end of the inclined sliding slot (211), and the single sample adding needle group (2) is kept at the extension position; When the extension lock tongue (331) is separated from the extension lock slot (313), the adjusting slider (31) extends towards the direction close to the single sample adding needle group (2), and the push protrusion (311) pushes the single sample adding needle group (2) to slide from the extension position to the retraction position through the inclined sliding slot (211).

4. The sample application device of claim 3, wherein, The locking assembly (3) further comprises: a retraction support plate (35) fixed to the top end of the locking guide plate (15), and the retraction locking block (32) is retractably arranged in the retraction support plate (35) along the second direction; an extension support plate (37) fixed to the bottom end of the locking guide plate (15), and the extension locking block (33) is retractably arranged in the extension support plate (37) along the second direction.

5. The sample application device of claim 4, wherein, The two ends of the locking guide plate (15) are respectively formed with a retraction step surface (151) and an extension step surface (152), the retraction step surface (151) is used to abut against the retraction locking block (32) when the retraction lock tongue (321) is in abutment with the retraction lock slot (312), and the extension step surface (152) is used to abut against the extension locking block (33) when the extension lock tongue (331) is in abutment with the extension lock slot (313).

6. The sample application device of claim 3, wherein, The locking assembly (3) further comprises: a slider elastic member (34) sleeved on the retractable guide rod (314) arranged on the adjusting slider (31), the retractable guide rod (314) is slidably connected with the sample adding base (1), and the slider elastic member (34) is used to push the adjusting slider (31) to extend towards the direction close to the single sample adding needle group (2) by elastic force when the extension lock tongue (331) is separated from the extension lock slot (313).

7. The sample application device of claim 3, wherein, Further comprising: a switching assembly (4) used to switch the working state of the locking assembly (3), the working state including the locking state and the unlocking state; When the single sample adding needle group (2) reaches the retraction position or the extension position, the switching assembly (4) is used to switch the locking assembly (3) from the unlocking state to the locking state. When the single sample needle group (2) is located between the retraction position and the extension position sliding, the switching assembly (4) is used for switching the locking assembly (3) from the locking state to the unlocking state.

8. The sample application device of claim 7, wherein, The switching assembly (4) comprises: a movable push plate (41); a locking block push rod (42) vertically fixed to the movable push plate (41); the end of the locking block push rod (42) is provided with a roller follower (421); When the locking block push rod (42) is inserted from the retraction release hole (11) provided in the sample adding base (1), the roller follower (421) is embedded in the retraction guide groove (322) provided in the retraction locking block (32), the locking block push rod (42) pushes the retraction locking block (32) away from the adjusting slider (31), and the retraction locking tongue (321) is separated from the retraction locking groove (312); When the locking block push rod (42) is inserted from the extension release hole (12) provided in the sample adding base (1), the roller follower (421) is embedded in the extension guide groove (332) provided in the extension locking block (33), the locking block push rod (42) pushes the extension locking block (33) away from the adjusting slider (31), and the extension locking tongue (331) is separated from the extension locking groove (313).

9. The sample application device of claim 8, wherein, The switching assembly (4) further comprises: a slider push rod (43) vertically fixed to the movable push plate (41) and parallel to the locking block push rod (42); the locking block push rod (42) is arranged beyond the slider push rod (43); when the retraction locking tongue (321) is separated from the retraction locking groove (312), the slider push rod (43) is inserted from the push guide hole (13) provided in the sample adding base (1), and the slider push rod (43) pushes the adjusting slider (31) to retract in a direction away from the single sample needle group (2).

10. A sample applicator characterized by, The sample adding device comprises any one of claims 1 to 9.

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