Sample tube rack

Abstract

The utility model discloses a sample tube rack, which comprises a fixed seat provided with a plurality of rows of through holes for placing sample tubes; the movable interlayer can slide front and back relative to the fixed seat, the movable interlayer comprises pushing arms extending in the left-right direction, the multiple pushing arms are arranged at intervals in the front-back direction, and one pushing arm corresponds to one row of through holes; the adjusting device comprises a pull rod, a locking piece and a reset spring, the pull rod is arranged on the fixed seat and can slide back and forth relative to the fixed seat, one end of the pull rod is connected with the movable interlayer, the other end of the pull rod penetrates out of the fixed seat and is connected with the locking piece, and the locking piece can drive the pull rod to move forwards and lock, so that the movable interlayer drives the push arm to move forwards to clamp the sample tube; one end of the reset spring is connected with the pull rod, the other end of the reset spring is connected with the fixed seat, the reset spring can enable the pull rod to reset backwards relative to the fixed seat, so that the movable interlayer drives the push arm to move backwards to loosen the sample tube, the sample tube rack is simple and rapid to operate, the sample tube on the fixed seat can be locked and reset during clamping, and a good clamping effect is ensured.

Description

Technical Field

[0001] This application relates to the field of sample tube racks, and particularly to a sample tube rack for a sample dispensing system. Background Art

[0002] After sampling, the sample tubes need to be placed on the corresponding sample tube racks, and then the sample tube racks are transferred to the sample dispensing equipment. During the sample extraction process, machine automatic lid opening is used instead of manual lid opening of the sample tubes. During the automatic lid opening process, the sample tubes need to be fixed to prevent the sample tubes from loosening and causing lid opening failure. Currently, most of the existing sample tube racks on the market use the method of tightly fitting and clamping with silicone sleeves, which has poor clamping effect and is difficult to operate. After a long time of use, it is difficult to maintain a good clamping effect. Summary of the Utility Model

[0003] The purpose of the present utility model is to provide a sample tube rack to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or create conditions.

[0004] The solution of the present utility model to solve its technical problems is: a sample tube rack, including a fixed seat, provided with a plurality of through holes for placing sample tubes, the plurality of through holes are arranged at intervals in the left-right direction to form through hole groups, and the plurality of through hole groups are arranged at intervals in the front-back direction; a movable sandwich layer, arranged on the fixed seat, the movable sandwich layer can slide back and forth relative to the fixed seat and has a first position and a second position in the front-back direction, the movable sandwich layer includes a push arm extending in the left-right direction, the plurality of push arms are arranged at intervals in the front-back direction, and one push arm corresponds to one through hole group, wherein: the movable sandwich layer can drive the front end of the push arm to extend into the range corresponding to the upper and lower parts of the through hole forward to reach the first position, and make the push arm clamp the sample tube; the movable sandwich layer can drive the front end of the push arm to withdraw from the range corresponding to the upper and lower parts of the through hole backward to reach the second position, and make the push arm release the sample tube; an adjusting device, including a pull rod, a locking member and a return spring, the pull rod is arranged on the fixed seat and can slide back and forth relative to the fixed seat, one end of the pull rod is connected to the movable sandwich layer, and the other end passes through the fixed seat and is connected to the locking member, the locking member can drive the pull rod to move forward and lock, so that the movable sandwich layer reaches the first position, one end of the return spring is connected to the pull rod, and the other end is connected to the fixed seat. When the locking member cancels the locking of the pull rod, the return spring can make the pull rod reset backward relative to the fixed seat, so that the movable sandwich layer reaches the second position.

[0005] This technical solution has at least the following beneficial effects:

[0006] The movable sandwich layer is arranged on the fixed seat. The through-hole groups on the fixed seat are provided with multiple rows in the front-back direction. The through-holes on the through-hole groups are used to place sample tubes. The front side of the push arm forms a receiving space. Each receiving space corresponds to the positions of multiple through-holes in each row of through-hole groups. The sample tubes can penetrate into the receiving space. By pulling the pull rod forward and locking the position of the pull rod with a locking member, the movable sandwich layer can be driven to move forward relative to the fixed seat along with the pull rod to the first position and be positioned, so that the front end of each push arm corresponding to a row of through-hole groups can move forward close to the sample tubes, and clamping of the sample tubes in each row can be achieved. Moreover, both ends of the return spring are respectively connected to the fixed seat and the pull rod. After the locking member releases the locking of the pull rod, the return spring pulls the pull rod to move backward, and then the movable sandwich layer can be reset backward to the second position, so that the front end of the push arm can withdraw backward from the through-hole and move away from the sample tubes, realizing the release of the sample tubes in each row. The sample tube rack of the present application is simple and fast to operate, can clamp and reset the sample tubes on the fixed seat, and ensures good clamping effect.

[0007] As a further improvement of the above technical solution, the fixed seat includes a top plate and a bottom plate which are arranged at intervals up and down. The top plate and the bottom plate are respectively provided with the through-holes that are vertically aligned one by one. The movable sandwich layer is arranged between the top plate and the bottom plate; the fixed seat further includes a connecting block which is arranged between the top plate and the bottom plate. The connecting block is provided with a stepped groove that penetrates through the front and back. The pull rod passes through the stepped groove. One end of the return spring is connected to the pull rod, and the other end abuts against the stepped surface of the stepped groove. The movable sandwich layer is located between the top plate and the bottom plate, and the top plate and the bottom plate are both correspondingly provided with through-holes, so that the bottom and the tube wall of the sample tube can be positioned, improving the placement stability of the sample tube. The pull rod is slidably connected to the connecting block, and the return spring is sleeved on the pull rod and abuts against the stepped surface of the stepped groove, improving the stability of the pull rod pulling the fixed seat back and forth, and at the same time ensuring the telescopic action of the return spring, avoiding the dislocation of the return spring, and improving the working stability of the return spring.

[0008] As a further improvement of the above technical solution, the bottom plate is provided with a first connection hole that penetrates through the up and down. The bottom of the connecting block is provided with a second connection hole. The axial direction of at least one of the first connection hole and the second connection hole extends in the front-back direction. The first connection hole and the second connection hole are connected by screws. The position of the connecting block relative to the bottom plate can be adjusted back and forth. After adjustment, the screws are inserted into the first connection hole and the second connection hole to realize the fixation between the connecting block and the bottom plate. By adjusting the front-back position of the connecting block, the overall front-back position of the adjusting device arranged on the fixed seat can be adjusted, playing a role in adjusting the tightness of the clamping force on the sample tube, reducing the installation accuracy, and at the same time enabling the fixed seat to adapt to sample tubes of different sizes, improving the applicability.

[0009] As a further improvement of the above technical solution, the locking member includes a rotating block and a wrench. The wrench is connected to the rotating block and extends along the side wall away from the rotating block. A rotating shaft is provided at one end of the pull rod facing away from the movable sandwich layer. The rotating block is rotatably connected to the rotating shaft. The outer wall of the rotating block abuts against the connecting block. The central axis of the rotating block is offset from the rotating shaft, so that the outer wall of the rotating block forms a cam outer edge relative to the rotating shaft. Under the backward restoring force of the return spring, the cam outer edge of the rotating block always abuts against the outer wall of the connecting block. By rotating the wrench, the distance between the rotating shaft and the position where the wrench abuts against the connecting block can be changed, thereby adjusting the front and rear positions of the pull rod relative to the connecting block and realizing the front and rear movement of the movable sandwich layer.

[0010] As a further improvement of the above technical solution, the rotating shaft extends in the up and down direction; when the movable sandwich layer enters the first position, the distance between the rotating shaft and the connecting block is at the maximum value, and the wrench abuts against the fixed seat. The wrench drives the pull rod and the movable sandwich layer to move back and forth by swinging left and right, reducing interference. At the same time, when the movable sandwich layer enters the first position, the distance between the rotating shaft and the position where the rotating block abuts against the connecting block is at the maximum value, and at this time, the end of the wrench away from the rotating block abuts against the fixed seat, and the position of the wrench relative to the fixed seat remains unchanged, realizing the self-locking function, and further positioning the movable sandwich layer at the first position.

[0011] As a further improvement of the above technical solution, the movable sandwich layer further includes anti-sliding blocks and two connecting arms oppositely arranged in the left and right directions. The pushing arm is located between the two connecting arms. The two sides of the pushing arm are respectively connected to the two connecting arms. The anti-sliding blocks are arranged on the front side wall of the pushing arm. The two ends of multiple pushing arms are respectively connected between the left and right connecting arms, improving the stability of the pushing arm. Anti-sliding blocks are provided at the front end of the pushing arm, improving the clamping effect on the sample tube and reducing the rotation or displacement of the sample tube.

[0012] As a further improvement of the above technical solution, a plurality of through grooves extending in the up and down direction are provided on the front side wall of the anti-sliding block. The plurality of through grooves are arranged at intervals in the left and right direction. The plurality of through grooves of one anti-sliding block correspond to the plurality of through holes of one through hole group one by one in the up and down direction. The anti-sliding block is provided with through grooves penetrating up and down at the position corresponding to the sample tube, so that when the movable sandwich layer is in the first position, the sample tubes can be embedded into the through grooves one by one, increasing the contact area and the degree of fit with the sample tubes, and further improving the clamping effect on the sample tubes.

[0013] As a further improvement of the above technical solution, a plurality of embedding blocks are arranged on the front side wall of the push arm at intervals in the left-right direction, and a plurality of embedding grooves are arranged on the rear side wall of the anti-sliding block. The embedding grooves are located between two adjacent through grooves; positioning holes are arranged on the upper side surface and / or the lower side surface of the embedding block, and positioning bumps are arranged on the inner top surface and / or the inner bottom surface of the embedding groove. The positioning bumps penetrate into the positioning holes one by one. The front side arm of the push arm and the rear side wall of the anti-sliding block are fitted with each other through a plurality of embedding blocks and embedding grooves one by one, so that the anti-sliding block can be directly aligned with the push arm, which is convenient for installation. The embedding grooves located at the rear side of the anti-sliding block are arranged between two adjacent through grooves located at the front side of the anti-sliding block, which improves the space utilization and reduces the material cost; the side surface of the embedding block and the inner wall surface of the embedding groove are engaged with each other through the positioning bumps and the positioning holes, so that the anti-sliding block and the push arm are further positioned and fixed, avoiding dislocation from each other, and ensuring that the through grooves on the anti-sliding block can be aligned with the sample tubes one by one.

[0014] As a further improvement of the above technical solution, the sample tube rack further includes at least one limiting structure. The limiting structure includes a limiting groove and a limiting member. The limiting groove is arranged on one of the movable sandwich layer and the fixed seat, and the limiting member is arranged on the other. The limiting member penetrates into the limiting groove and can slide back and forth in the limiting groove; there are two limiting structures, and the two limiting grooves are respectively arranged on the left and right sides of the movable sandwich layer, and the two limiting members respectively pass through the corresponding limiting grooves and are threadedly connected to the fixed seat. According to the limiting structure, the movable sandwich layer can be slidably connected to the fixed seat in the front-rear direction. The limiting member of the limiting structure can slide back and forth in the limiting groove, providing limiting and front-rear guiding functions for the movement of the movable sandwich layer relative to the fixed seat; the left and right sides of the movable sandwich layer are respectively slidably connected to the fixed seat through the limiting structure, further improving the stability of the front-rear movement of the movable sandwich layer.

[0015] As a further improvement of the above technical solution, at least one guiding strip is arranged on the bottom surface of the fixed seat, and the guiding strip extends in the front-rear direction; at least one magnet is arranged on the rear end surface of the fixed seat. An adsorbing member and a guiding member are fixedly arranged on the external cup splitting processing system. The guiding strip extending in the front-rear direction on the bottom surface of the fixed seat cooperates with the guiding member for guiding, restricting the left-right movement of the fixed seat, playing a role of positioning and calibration. A magnet is arranged on the rear end surface of the fixed seat, and the magnet is used to adsorb the adsorbing member of the cup splitting processing device system, thereby positioning the fixed seat and performing front-rear reset calibration. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present utility model, rather than all embodiments. Without creative efforts, those skilled in the art can also obtain other design solutions and drawings based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of a sample tube rack provided by some embodiments of the present application;

[0018] Figure 2 It is a structural sectional view of a sample tube rack provided by some embodiments of the present application;

[0019] Figure 3 It is an exploded view of the structure of a sample tube rack provided by some embodiments of the present application;

[0020] Figure 4 It is a schematic structural diagram of an adjusting device provided by some embodiments of the present application. When the wrench is in the position shown in the figure, the movable sandwich is in the second position;

[0021] Figure 5 It is a schematic structural diagram of an adjusting device provided by some embodiments of the present application. When the wrench is in the position shown in the figure, the movable sandwich is in the first position;

[0022] Figure 6 It is a schematic structural diagram of a movable sandwich provided by some embodiments of the present application;

[0023] Figure 7 It is a partial schematic view of an exploded view of the structure of a movable sandwich provided by some embodiments of the present application.

[0024] In the drawings: 100 - fixed seat, 101 - through hole, 102 - decorative sheet metal, 110 - movable sandwich, 120 - adjusting device, 210 - top plate, 220 - bottom plate, 230 - connecting block, 231 - stepped groove, 241 - pull rod, 242 - locking member, 243 - return spring, 251 - first connection hole, 252 - second connection hole, 253 - screw, 261 - limiting groove, 262 - limiting member, 310 - support column, 320 - magnet, 330 - accommodating space, 340 - push arm, 350 - connecting arm, 360 - anti-slip block, 410 - rotating shaft, 420 - rotating block, 430 - wrench, 610 - through slot, 710 - embedding block, 711 - positioning hole, 720 - embedding groove, 721 - positioning convex block. Detailed implementation manners

[0025] The concept, specific structure and technical effects of the present utility model will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts all fall within the scope of protection of the present utility model. In addition, all the connection relationships mentioned in the text do not simply refer to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the present invention can be combined interactively on the premise of not conflicting with each other.

[0026] Referring to Figure 1 , Figure 2 and Figure 3 , the present application provides a sample tube rack, which includes a fixed seat 100, a movable interlayer 110 and an adjusting device 120. The fixed seat 100 is provided with a plurality of through holes 101 for placing sample tubes. The plurality of through holes 101 are arranged at intervals in the left-right direction to form a through hole group, and the plurality of through hole groups are arranged at intervals in the front-back direction; the movable interlayer 110 is arranged on the fixed seat 100, and the movable interlayer 110 can slide back and forth relative to the fixed seat 100 and has a first position and a second position in the front-back direction. The movable interlayer 110 includes a push arm 340 extending in the left-right direction. The plurality of push arms 340 are arranged at intervals in the front-back direction, and one push arm 340 corresponds to one through hole group. Among them: the movable interlayer 110 can drive the front end of the push arm 340 to protrude beyond the projection range corresponding to the upper and lower through holes 101 forward to reach the first position, and make the push arm 340 clamp the sample tube; the movable interlayer 110 can drive the front end of the push arm 340 to withdraw from the projection range corresponding to the upper and lower through holes 101 backward to reach the second position, and make the push arm 340 release the sample tube; the adjusting device 120 includes a pull rod 241, a locking member 242 and a return spring 243. The pull rod 241 is arranged on the fixed seat 100 and can slide back and forth relative to the fixed seat 100. One end of the pull rod 241 is connected to the movable interlayer 110, and the other end passes through the fixed seat 100 and is connected to the locking member 242. The locking member 242 can drive the pull rod 241 to move forward and lock, so that the movable interlayer 110 reaches the first position. One end of the return spring 243 is connected to the pull rod 241, and the other end is connected to the fixed seat 100. When the locking member 242 cancels the locking of the pull rod 241, the return spring 243 can make the pull rod 241 reset backward relative to the fixed seat 100, so that the movable interlayer 110 reaches the second position.

[0027] Specifically, the movable sandwich layer 110 is arranged on the fixed seat 100. The through-hole groups on the fixed seat 100 are provided with multiple rows in the front-back direction. The through-holes 101 on the through-hole groups are used to place sample tubes. A receiving space 330 is formed on the front side of the push arm 340. Each receiving space 330 corresponds to the positions of multiple through-holes 101 in each row of the through-hole groups. The sample tubes can penetrate into the receiving space 330. By pulling the pull rod 241 forward and locking the position of the pull rod 241 with the locking member 242, the movable sandwich layer 110 can be driven to move forward relative to the fixed seat 100 with the pull rod 241 to the first position and be positioned, so that the front end of each push arm 340 corresponding to a row of through-hole groups can move forward close to the sample tubes and clamp the sample tubes in each row. Moreover, both ends of the return spring 243 are respectively connected to the fixed seat 100 and the pull rod 241. After the locking member 242 releases the locking of the pull rod 241, the return spring 243 pulls the pull rod 241 to move backward, and further enables the movable sandwich layer 110 to be reset backward to the second position, so that the front end of the push arm 340 can withdraw backward from the through-hole 101 and be away from the sample tubes, realizing the release of the sample tubes in each row. The sample tube rack of the present application is simple and fast to operate, and the clamping of the sample tubes on the fixed seat 100 can be locked and reset, ensuring good clamping effect.

[0028] Furthermore, the fixed seat 100 includes a top plate 210 and a bottom plate 220 which are arranged at intervals up and down. Through-holes 101 which are vertically corresponding to each other are respectively provided on the top plate 210 and the bottom plate 220. The movable sandwich layer 110 is arranged between the top plate 210 and the bottom plate 220. The fixed seat 100 further includes a connecting block 230. The connecting block 230 is arranged between the top plate 210 and the bottom plate 220. A stepped groove 231 which penetrates through in the front-back direction is provided on the connecting block 230. The pull rod 241 passes through the stepped groove 231. One end of the return spring 243 is connected to the pull rod 241, and the other end abuts against the stepped surface of the stepped groove 231.

[0029] Specifically, the movable sandwich layer 110 is located between the top plate 210 and the bottom plate 220. Through-holes 101 are respectively provided on both the top plate 210 and the bottom plate 220, so that the bottom and the tube wall of the sample tube can be positioned, improving the placement stability of the sample tube. The pull rod 241 is slidably connected to the connecting block 230, and the return spring 243 is sleeved on the pull rod 241 and abuts against the stepped surface of the stepped groove 231, improving the stability of the pull rod 241 pulling the fixed seat 100 back and forth. At the same time, the telescopic effect of the return spring 243 is ensured, preventing the return spring 243 from being displaced and improving the working stability of the return spring 243. The top plate 210 and the bottom plate 220 are connected by support columns 310. The movable sandwich layer 110 is arranged between the top plate 210 and the bottom plate 220. The decorative sheet metal 102 encloses the outside of the space surrounded by the top plate 210 and the bottom plate 220.

[0030] In fact, between the fixed base 100 and the movable sandwich layer 110, front-back position limiting and guiding can be achieved through a limiting hole extending in the front-back direction and a limiting structure cooperating with the limiting hole, or the movable sandwich layer 110 can achieve front-back position limiting through spaced limiting blocks, so that the movable position of the movable sandwich layer 110 is limited between a first position and a second position. The limiting structure and the limiting blocks can be positioning pins, columnar structures, screws, etc. The pull rod 241 is fixed to the movable sandwich layer 110 through a screw 253. The adjusting device 120 is arranged on the front side of the fixed base 100. The return spring 243 is in a compressed state, and the return spring 243 can be locked to one end of the pull rod 241 through a screw 253.

[0031] Further as a preferred embodiment, a first connection hole 251 penetrating up and down is provided on the bottom plate 220, and a second connection hole 252 is provided at the bottom of the connection block 230. The axial direction of at least one of the first connection hole 251 and the second connection hole 252 extends in the front-back direction, and the first connection hole 251 and the second connection hole 252 are connected through a screw 253.

[0032] Specifically, the position of the connection block 230 relative to the bottom plate 220 can be adjusted front and back. After adjustment, the screw 253 is inserted into the first connection hole 251 and the second connection hole 252 to fix the connection between the connection block 230 and the bottom plate 220. By adjusting the front-back position of the connection block 230, the front-back position of the adjusting device 120 integrally arranged on the fixed base 100 is further adjusted, which plays a role in adjusting the tightness of the clamping force on the sample tube, reduces the installation accuracy, and at the same time enables the fixed base 100 to adapt to sample tubes of different sizes, improving the applicability.

[0033] Further, a first connection hole 251 penetrating up and down is provided on the bottom plate 220, and a second connection hole 252 is provided at the bottom of the connection block 230. The axial direction of at least one of the first connection hole 251 and the second connection hole 252 extends in the front-back direction, and the first connection hole 251 and the second connection hole 252 are connected through a screw 253.

[0034] Specifically, the connecting block 230 can be adjusted back and forth relative to the position of the bottom plate 220. After adjustment, the screw 253 is inserted into the first connecting hole 251 and the second connecting hole 252 to fix the connecting block 230 and the bottom plate 220. By adjusting the front and back positions of the connecting block 230, the front and back positions of the entire adjusting device 120 disposed on the fixing base 100 can be adjusted, so as to adjust the tightness of the clamping force on the sample tube, reduce the installation accuracy, and at the same time enable the fixing base 100 to adapt to sample tubes of different sizes, improving the applicability. In this embodiment, the first connecting hole 251 extends in the front-back direction, the screw 253 passes through the first connecting hole 251 and is threadedly connected to the second connecting hole 252. By adjusting the position of the screw 253 passing through the first connecting hole 251, the connecting block 230 can correspond to the position of the screw 253 and then adjust the position of the second connecting hole 252. In addition, it can also be that the second connecting hole 252 extends in the front-back direction.

[0035] Further, referring to Figure 4 and Figure 5 , the locking member 242 includes a rotating block 420 and a wrench 430. The wrench 430 is connected to the rotating block 420 and extends along the side wall away from the rotating block 420. One end of the pull rod 241 facing away from the movable sandwich 110 is provided with a rotating shaft 410. The rotating block 420 is rotatably connected to the rotating shaft 410. The outer wall of the rotating block 420 abuts against the connecting block 230. The central axis of the rotating block 420 is offset from the rotating shaft 410, so that the outer wall of the rotating block 420 forms a cam outer edge relative to the rotating shaft 410.

[0036] Specifically, under the backward restoring force of the restoring spring 243, the cam outer edge of the rotating block 420 always abuts against the outer wall of the connecting block 230. By rotating the wrench 430, the distance between the rotating shaft 410 and the wrench 430 abutting against the connecting block 230 can be changed, thereby adjusting the front and back positions of the pull rod 241 relative to the connecting block 230 and realizing the front and back movement of the movable sandwich 110.

[0037] Further, the rotating shaft 410 extends in the up-down direction, and the wrench 430 drives the pull rod 241 and the movable sandwich 110 to move back and forth by swinging left and right, reducing interference.

[0038] Moreover, when the movable sandwich layer 110 enters the first position, the distance between the rotating shaft 410 and the connecting block 230 is at its maximum value, and the wrench 430 abuts against the fixed seat 100. Specifically, when the movable sandwich layer 110 enters the first position, the distance between the rotating shaft 410 and the position where the rotating block 420 abuts against the connecting block 230 is at its maximum value. At this time, the end of the wrench 430 far from the rotating block 420 abuts against the fixed seat 100, and the position of the wrench 430 relative to the fixed seat 100 remains unchanged, realizing the self-locking function and preventing the wrench 430 from rotating, thereby positioning the movable sandwich layer 110 at the first position. The rotating shaft 410 of the present application is arranged on the central axis of the pull rod 241. When it is necessary to loosen the sample tube, the wrench 430 is rotated. Under the backward pulling of the reset spring 243 on the pull rod 241, the distance between the rotating shaft 410 and the connecting block 230 gradually decreases until the movable sandwich layer 110 enters the second position.

[0039] Furthermore, the movable sandwich layer 110 further includes anti-sliding blocks 360 and two connecting arms 350 arranged oppositely in the left-right direction. The pushing arm 340 is located between the two connecting arms 350, and both sides of the pushing arm 340 are respectively connected to the two connecting arms 350. The anti-sliding blocks 360 are arranged on the front side wall of the pushing arm 340.

[0040] Specifically, both ends of multiple pushing arms 340 are respectively connected between the left and right connecting arms 350 to improve the stability of the pushing arms 340. Anti-sliding blocks 360 are arranged at the front ends of the pushing arms 340 to improve the clamping effect on the sample tube and reduce the rotation or displacement of the sample tube. A receiving space 330 is formed on the front side of the pushing arm 340, and the receiving space 330 can correspondingly place a through-hole group, that is, multiple through-holes 101 arranged in a row horizontally. In fact, the anti-sliding blocks 360 can be made of a material with a rubber surface or other materials having a certain friction and / or elasticity.

[0041] Furthermore, referring to Figure 7 , multiple through-grooves 610 extending vertically are provided on the front side wall of the anti-sliding block 360, and the multiple through-grooves 610 are arranged at intervals in the left-right direction. The multiple through-grooves 610 of one anti-sliding block 360 correspond one-to-one vertically with the multiple through-holes 101 of one through-hole group.

[0042] Specifically, through-grooves 610 penetrating vertically are provided at the positions of the anti-sliding blocks 360 corresponding to the sample tubes, so that when the movable sandwich layer 110 is in the first position, the sample tubes can be embedded into the through-grooves 610 one by one, increasing the contact area and the degree of fit with the sample tubes, and further improving the clamping effect on the sample tubes. In fact, the structure of the through-grooves 610 is semi-circular and conforms to the shape of the tube wall of the sample tube. It can also be rectangular, etc. In addition, the front side of the anti-sliding block 360 can also be a flat structure.

[0043] A plurality of engaging blocks 710 are provided on the front side wall of the push arm 340 at intervals in the left-right direction. A plurality of embedding grooves 720 are provided on the rear side wall of the anti-sliding block 360, and the embedding grooves 720 are located between two adjacent through grooves 610.

[0044] Specifically, the front side arm of the push arm 340 and the rear side wall of the anti-sliding block 360 are fitted to each other through a plurality of engaging blocks 710 and embedding grooves 720 one by one, so that the anti-sliding block 360 can be directly aligned with the push arm 340, which is convenient for installation. The embedding grooves 720 located at the rear side of the anti-sliding block 360 are arranged between two adjacent through grooves 610 located at the front side of the anti-sliding block 360, which improves space utilization and reduces material costs.

[0045] Furthermore, positioning holes 711 are provided on both the upper side surface and the lower side surface of the engaging block 710, and positioning protrusions 721 are provided on both the inner top surface and the inner bottom surface of the embedding groove 720, and the positioning protrusions 721 penetrate into the positioning holes 711 one by one.

[0046] Specifically, the side surface of the engaging block 710 and the inner wall surface of the embedding groove 720 are engaged with each other through the positioning protrusions 721 and the positioning holes 711, so that the anti-sliding block 360 and the push arm 340 are further positioned and fixed to avoid dislocation from each other, and ensure that the through grooves 610 on the anti-sliding block 360 can be aligned with the sample tubes one by one. In addition, the positioning holes 711 can also be provided on the upper side surface or the lower side surface of the engaging block 710, and the corresponding positioning protrusions 721 are provided on the inner top surface or the inner bottom surface of the embedding groove 720.

[0047] The sample tube rack further includes at least one limiting structure. The limiting structure includes a limiting groove 261 and a limiting member 262. The limiting groove 261 is provided on one of the movable sandwich layer 110 and the fixed seat 100, and the limiting member 262 is provided on the other. The limiting member 262 penetrates into the limiting groove 261 and can slide back and forth in the limiting groove 261. The movable sandwich layer 110 can be slidably connected to the fixed seat 100 in the front-rear direction according to the limiting structure. The limiting member 262 of the limiting structure can slide back and forth in the limiting groove 261, providing a limiting and front-rear guiding effect for the movement of the movable sandwich layer 110 relative to the fixed seat 100.

[0048] There are two limiting structures. The two limiting grooves 261 are respectively provided on the left and right sides of the movable sandwich layer 110, and the two limiting members 262 respectively pass through the corresponding limiting grooves 261 and are threadedly connected to the fixed seat 100. Specifically, the left and right sides of the movable sandwich layer 110 are respectively slidably connected to the fixed seat 100 through the limiting structure, further improving the stability of the front-rear movement of the movable sandwich layer 110.

[0049] An adsorption member and a guiding member are fixedly provided on the cup-dividing processing system of the peripheral device. At least one guiding strip is provided on the bottom surface of the fixing seat 100. The guiding strip extends in the front-rear direction. The guiding strip extending in the front-rear direction on the bottom surface of the fixing seat 100 cooperates with the guiding member for guiding, restricting the left-right movement of the fixing seat 100, and playing a role in positioning and calibration. At least one magnet 320 is provided on the rear end surface of the fixing seat 100. The magnet 320 is used to adsorb the adsorption member of the cup-dividing processing device system, thereby positioning the fixing seat 100 and performing front-rear reset calibration. In fact, a plurality of magnets 320 are arranged at intervals in the left-right direction.

[0050] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A sample tube rack, characterized in that: include: The fixing seat (100) is provided with a plurality of through holes (101) for placing sample tubes, the plurality of through holes (101) are arranged at intervals in the left-right direction to form through hole groups, and the plurality of through hole groups are arranged at intervals in the front-back direction; The movable interlayer (110) is arranged on the fixed seat (100), the movable interlayer (110) can slide forward and backward relative to the fixed seat (100) and has a first position and a second position in the front and back directions, the movable interlayer (110) comprises a push arm (340) extending in the left-right direction, a plurality of push arms (340) are arranged at intervals in the front-back direction, and one push arm (340) is arranged corresponding to one through hole group, wherein: The movable interlayer (110) can drive the front end of the push arm (340) forward to extend into the upper and lower corresponding ranges of the through hole (101) to reach the first position, and enable the push arm (340) to clamp the sample tube; The movable interlayer (110) can drive the front end of the push arm (340) backward to withdraw from the corresponding upper and lower ranges of the through hole (101) to reach the second position, and enable the push arm (340) to release the sample tube; The adjusting device (120) comprises a pull rod (241), a locking element (242) and a reset spring (243). The pull rod (241) is arranged on the fixed seat (100) and can slide forward and backward relative to the fixed seat (100). One end of the pull rod (241) is connected to the movable interlayer (110), and the other end passes through the fixed seat (100) and is connected to the locking element (242). The locking element (242) can drive the pull rod (241) to move forward and lock it, so that the movable interlayer (110) reaches the first position. One end of the reset spring (243) is connected to the pull rod (241), and the other end is connected to the fixed seat (100). The lock element (242) cancels the lock on the pull rod (241). The reset spring (243) can reset the pull rod (241) backward relative to the fixed seat (100), so that the movable interlayer (110) reaches the second position.

2. The sample tube rack according to claim 1, characterized in that: The fixing seat (100) comprises a top plate (210) and a bottom plate (220) which are arranged at an interval up and down, the top plate (210) and the bottom plate (220) are respectively provided with the through holes (101) which correspond to each other up and down, and the movable interlayer (110) is arranged between the top plate (210) and the bottom plate (220); The fixing seat (100) also includes a connecting block (230), wherein the connecting block (230) is arranged between the top plate (210) and the bottom plate (220), and the connecting block (230) is provided with a step groove (231) that passes through the front and rear, and the pull rod (241) passes through the step groove (231), and one end of the return spring (243) is connected to the pull rod (241), and the other end abuts against the step surface of the step groove (231).

3. The sample tube rack according to claim 2, characterized in that: The bottom plate (220) is provided with a first connecting hole (251) which passes through from top to bottom, and the bottom of the connecting block (230) is provided with a second connecting hole (252), and at least one of the first connecting hole (251) and the second connecting hole (252) extends axially forward and backward, and the first connecting hole (251) and the second connecting hole (252) are connected by screws (253).

4. The sample tube rack according to any one of claims 2 to 3, characterized in that: The locking member (242) comprises a rotating block (420) and a wrench (430), wherein the wrench (430) is connected to the rotating block (420) and extends along a side wall away from the rotating block (420), and a rotating shaft (410) is provided at one end of the pull rod (241) facing away from the movable interlayer (110), and the rotating block (420) is rotatably connected to the rotating shaft (410), and an outer wall of the rotating block (420) abuts against the connecting block (230), and a central axis of the rotating block (420) is staggered from the rotating shaft (410) so that the outer wall of the rotating block (420) forms an outer edge of a cam relative to the rotating shaft (410).

5. The sample tube rack according to claim 4, characterized in that: The rotating shaft (410) extends in the up-down direction; When the movable interlayer (110) enters the first position, the distance between the rotating shaft (410) and the connecting block (230) is at a maximum value, and the end of the wrench (430) away from the rotating block (420) abuts against the fixing seat (100).

6. The sample tube rack according to claim 1, characterized in that: The movable interlayer (110) further comprises an anti-sliding block (360) and two connecting arms (350) arranged opposite to each other in the left-right direction, the pushing arm (340) is located between the two connecting arms (350), the two sides of the pushing arm (340) are respectively connected to the two connecting arms (350), and the anti-sliding block (360) is arranged on the front side wall of the pushing arm (340).

7. The sample tube rack according to claim 6, characterized in that: A plurality of through slots (610) extending vertically are provided on the front side wall of the anti-sliding block (360); the plurality of through slots (610) are arranged at intervals along the left-right direction; and the plurality of through slots (610) of one anti-sliding block (360) correspond vertically to the plurality of through holes (101) of one through hole group.

8. The sample tube rack according to claim 7, characterized in that: A plurality of insert blocks (710) are arranged at intervals in the left-right direction on the front side wall of the push arm (340), and a plurality of embedding grooves (720) are arranged on the rear side wall of the anti-sliding block (360), wherein the embedding grooves (720) are located between two adjacent through grooves (610); Positioning holes (711) are provided on the upper side and / or lower side of the embedding block (710), and positioning protrusions (721) are provided on the inner top surface and / or inner bottom surface of the embedding groove (720), and the positioning protrusions (721) are inserted into the positioning holes (711) one by one.

9. The sample tube rack according to claim 1, characterized in that: The sample tube rack further comprises at least one limiting structure, wherein the limiting structure comprises a limiting groove (261) and a limiting member (262), wherein the limiting groove (261) is arranged on one of the movable interlayer (110) and the fixed seat (100), and the limiting member (262) is arranged on the other, and the limiting member (262) penetrates into the limiting groove (261) and can slide back and forth in the limiting groove (261); The limiting structure comprises two, the two limiting grooves (261) are respectively arranged on the left and right sides of the movable interlayer (110), and the two limiting members (262) respectively pass through the corresponding limiting grooves (261) and are threadedly connected to the fixing seat (100).

10. The sample tube rack according to claim 1, characterized in that: The bottom surface of the fixing seat (100) is provided with at least one guide bar, and the guide bar extends in the front-rear direction; At least one magnet (320) is provided on the rear end surface of the fixing seat (100).

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