Reciprocating feeding device for test tube rack and analyzer

Abstract

The utility model discloses a test tube rack reciprocating feeding device and an analyzer. The reciprocating feeding device for the test tube rack is arranged on a bottom plate of a sample injector of the analyzer, and comprises a fixed plate mounted on the bottom plate of the sample injector; the driving assembly is mounted on the sample injector bottom plate and is static relative to the fixed plate, and the driving assembly comprises an X-direction transmission structure and a Z-direction transmission driving mechanism; the pusher dog movement assembly comprises a transmission bracket and a pusher dog piece; the transmission support is assembled on the fixing plate in an X-direction sliding mode and connected with the X-direction transmission structure. The pusher dog piece is assembled on the transmission bracket in a Z-direction sliding manner and is connected with the Z-direction transmission driving mechanism; the pusher dog piece is used for stretching into the bottom of the test tube rack when the Z-direction conveying driving mechanism drives the pusher dog piece to ascend in the Z direction, and can drive the test tube rack to conduct reciprocating feeding in the X direction when the X-direction transmission structure continues to drive the transmission support to move in the X direction. The feeding device is reliable in feeding motion and low in noise, the driving source does not follow the feeding motion, and the feeding structure occupies a small space.

Description

Technical Field

[0001] The utility model relates to the technical field of sample analysis instruments, in particular to a test tube rack reciprocating feeding device and an analyzer. Background Art

[0002] Currently, fully automated sample analyzers on the market generally feature a test tube rack feed mechanism to automate test tube rack transportation. In recent years, with the continuous improvement of fully automated sample analysis and testing technology, the detection of various abnormal samples has increased, and the demand for automatic retesting of abnormal samples by users (physicians in clinical laboratories) has increased. Therefore, bidirectional feed and retraction (bidirectional feed) functions have become a necessity for fully automated sample analyzers. Currently, the feed and retraction (bidirectional feed) methods of test tube racks on the market are generally claw-pull or belt-drag.

[0003] However, existing claw-pull bidirectional feed mechanisms commonly suffer from high noise levels (caused by the rotating claws striking the tabletop) and unreliable feed motion. Existing belt-pulling drive sources follow the motion, placing high demands on the flex life of the pipeline, increasing costs. Furthermore, belts are prone to wear, loosening, chipping, and slipping over extended periods of use. Furthermore, both feed mechanisms occupy a large space, resulting in high structural costs due to their large travel lengths. Utility Model Content

[0004] The purpose of the utility model is to provide a test tube rack reciprocating feeding device and an analyzer, aiming to overcome the deficiencies of the above-mentioned prior art.

[0005] In order to solve the above technical problems, the purpose of the present invention is achieved through the following technical solutions: providing a test tube rack reciprocating feeding device, which is arranged on the bottom plate of the sample injector of the analyzer, and the test tube rack reciprocating feeding device includes:

[0006] A fixing plate, mounted on the bottom plate of the sample injector;

[0007] A drive assembly is mounted on the sample injector base plate and is relatively stationary relative to the fixed plate, the drive assembly comprising an X-axis transmission drive member and a Z-axis transmission drive member;

[0008] A pusher claw motion assembly includes a transmission bracket and a pusher claw member; the transmission bracket is slidably assembled on the fixed plate in the X direction and connected to the X-direction transmission drive member; the pusher claw member is slidably assembled on the transmission bracket in the Z direction and connected to the Z-direction transmission drive member;

[0009] The pusher claw member is used to extend into the bottom of the test tube rack when the Z-direction transmission drive member drives the pusher claw member to rise in the Z direction, and when the transmission bracket is continued to move in the X direction by the X-direction transmission drive member, it can drive the test tube rack to reciprocate along the X direction.

[0010] Furthermore, the test tube rack reciprocating feeding device further includes:

[0011] An X-direction connecting member, one end of which is fixedly connected to the X-direction transmission driving member, and the other end of which is fixedly connected to the transmission bracket, so as to link the transmission bracket to drive the pusher claw member to move in the X direction;

[0012] The Z-direction connecting member has one end fixedly connected to the Z-direction transmission driving member, and the other end is slidably connected to the claw member in the X direction and relatively fixed in the Z direction to link the claw member to move in the Z direction.

[0013] Furthermore, the driving mode of the X-direction transmission driving member and / or the Z-direction transmission driving member is any one of motor synchronous belt driving, linear motor driving, gear rack driving, and cylinder linear transmission.

[0014] Furthermore, the finger movement assembly further includes:

[0015] An X-guide rail is fixedly mounted on the fixed plate, and one side of the transmission bracket is slidably assembled on the X-guide rail;

[0016] The Z-guide rail is fixedly mounted on the other side of the transmission bracket, and the pusher claw is slidably assembled on the Z-guide rail.

[0017] Furthermore, the finger movement assembly further includes:

[0018] An X-direction guide member is fixedly mounted on the pusher claw member, and the other end of the Z-direction connecting member is slidably connected to the X-direction guide member in the X-direction direction;

[0019] The Z-direction guide member is provided between the pusher claw member and the transmission bracket, and is used for guiding the pusher claw member when the pusher claw member moves along the Z-direction to prevent the pusher claw member from deviating in the Y-direction.

[0020] Furthermore, the pusher claw movement assembly further includes an elastic reset member; the elastic reset member is connected between the pusher claw member and the fixed plate; the elastic reset member is used to generate a downward pulling force after the pusher claw member rises.

[0021] Furthermore, the pusher claw member includes a transmission plate and at least one pusher claw; the transmission plate is slidably assembled on the Z-direction guide rail, and the pusher claw is installed on the top of the transmission plate and extends upward along the Z direction.

[0022] Furthermore, there are two pusher claws, which are located at both ends of the top of the transmission plate and are parallel in the horizontal height direction.

[0023] Furthermore, the X-direction connecting member and the Z-direction connecting member are both traction plates.

[0024] An embodiment of the present invention further provides an analyzer, comprising an injector base plate and the above-mentioned test tube rack reciprocating feeding device mounted on the injector base plate.

[0025] The beneficial effects of the embodiments of the present utility model are:

[0026] The embodiment of the utility model drives the pusher claw motion component to perform linear motion in the Z direction and the X direction to form a "rectangular" motion path, which has no eccentric load, high reliability, and small space occupation.

[0027] The embodiment of the utility model drives the claw motion assembly to move without hitting the table surface, thereby solving the high noise problem commonly found in the existing claw-pull type two-way feeding structure, as well as the problems of belt wear, looseness, chipping, and slipping that are prone to occur in the belt dragging type.

[0028] The driving component of the embodiment of the utility model is fixedly assembled as a driving source and will not follow the movement. There is no need to consider issues such as the bending resistance life requirements of the pipeline, and the cost is relatively lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 Schematic diagram of the three-dimensional structure of the test tube rack reciprocating feeding device provided in the embodiment of the utility model Figure 1 .

[0031] Figure 2 Schematic diagram of the decomposition structure of the test tube rack reciprocating feeding device provided by the embodiment of the utility model Figure 1 .

[0032] Figure 3 Schematic diagram of the three-dimensional structure of the test tube rack reciprocating feeding device provided in the embodiment of the utility model Figure 2 .

[0033] Figure 4 Schematic diagram of the decomposition structure of the test tube rack reciprocating feeding device provided by the embodiment of the utility model Figure 2 .

[0034] Figure 5 This is a schematic structural diagram of the pusher claw motion assembly provided in an embodiment of the present utility model.

[0035] Figure 6 This is a schematic structural diagram of the Z-direction guide provided in an embodiment of the present utility model.

[0036] Figure 7 This is a structural schematic diagram of the pusher claw provided in an embodiment of the present invention in the initial position O.

[0037] Figure 8 This is a structural schematic diagram of the pusher claw provided in an embodiment of the present utility model in the initial position A.

[0038] Figure 9 This is a structural schematic diagram of the pusher claw provided in an embodiment of the present utility model in the initial position B.

[0039] Figure 10 This is a structural schematic diagram of the pusher claw provided in an embodiment of the present utility model in the initial position C.

[0040] Figure 11 This is a schematic diagram of the process of single-step left movement of the test tube rack by the pusher provided in an embodiment of the utility model.

[0041] Figure 12 Schematic diagram of the process of single-step rightward movement of the test tube rack by the pusher provided in an embodiment of the utility model.

[0042] Description of the symbols in the figure:

[0043] 1. Fixed plate;

[0044] 2. Drive assembly; 21. X-axis transmission drive; 211. X-axis motor; 212. X-axis timing belt; 22. Z-axis transmission drive; 221. Z-axis motor; 222. Z-axis timing belt; 23. Motor mounting plate;

[0045] 3. Pusher claw motion assembly; 31. Transmission bracket; 32. Pusher claw; 321. Transmission plate; 322. Pusher claw; 33. X-direction guide rail; 34. Z-direction guide rail; 35. X-direction guide member; 36. Z-direction guide member; 361. Limiting groove; 37. Elastic reset member; 371. Spring mounting plate; 372. Pull-down spring; 38. Z-direction optical coupler;

[0046] 4. X-axis connector;

[0047] 5. Z-direction connector. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0050] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0051] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0052] See also Figures 1 to 3 The embodiment of the present invention provides a test tube rack reciprocating feeding device, which is arranged on the bottom plate of the sample injector of the analyzer (not shown in the figure), and the test tube rack reciprocating feeding device includes: a fixed plate 1, a driving assembly 2 and a claw motion assembly 3;

[0053] The fixing plate 1 is installed on the bottom plate of the sample injector;

[0054] The driving assembly 2 is mounted on the bottom plate of the sample injector and is relatively stationary with the fixed plate 1. The driving assembly 2 includes an X-direction transmission driving member 21 and a Z-direction transmission driving member 22.

[0055] The claw motion assembly 3 includes a transmission bracket 31 and a claw member 32; the transmission bracket 31 is slidably assembled on the fixed plate 1 in the X direction and connected to the X-direction transmission drive member 21; the claw member 32 is slidably assembled on the transmission bracket 31 in the Z direction and connected to the Z-direction transmission drive member 22.

[0056] In this embodiment, the fixed plate 1 is the bearing structure of the entire test tube rack reciprocating feeding device, and the fixed plate 1 is fixedly installed on the bottom plate of the sample injector by screws to maintain stability; the driving assembly 2 includes two driving sources, an X-direction transmission driving member 21 and a Z-direction transmission driving member 22, which are used to drive the claw motion assembly 3 to move in the X and Z directions; specifically, the claw member 32 is used to extend into the bottom of the test tube rack when the Z-direction transmission driving member 22 drives the claw member 32 to rise, and continues to be driven by the X-direction transmission driving member 21 to drive the transmission bracket 31 to move in the X direction, which can drive the test tube rack to reciprocate along the X direction.

[0057] In this embodiment, the driving assembly 2 drives the finger movement assembly 3 to perform linear motion in the Z direction and the X direction, forming a "rectangular" motion path, which has no eccentric load, high reliability, and small space occupation.

[0058] This embodiment drives the pusher claw motion assembly 3 to move without hitting the table surface, solving the high noise problem common in the existing pusher claw 322 pulling type two-way feeding structure, as well as the belt wear, looseness, chipping, slipping and other problems that are prone to occur in the belt dragging type.

[0059] The driving assembly 2 of this embodiment is fixedly assembled as a driving source and will not follow the movement. There is no need to consider issues such as the bending life requirements of the pipeline, and the cost is relatively lower.

[0060] In one embodiment, the driving mode of the X-direction transmission driving member 21 and / or the Z-direction transmission driving member 22 is any one of motor synchronous belt driving, linear motor driving, gear rack driving, and cylinder linear transmission.

[0061] In this embodiment, the X-direction transmission drive member 21 and the Z-direction transmission drive member 22 are fixedly mounted on the bottom plate of the sample injector via the same motor mounting plate 23 to achieve relative stillness of the drive assembly 2 and the fixed plate 1 .

[0062] The X-axis transmission drive member 21 and the Z-axis transmission drive member 22 of this embodiment are preferably driven by a motor synchronous belt. Specifically, the X-axis transmission drive member 21 may include an X-axis motor 211 and an X-axis synchronous belt 212. The X-axis motor 211 is fixed to the motor mounting plate 23 with its motor shaft parallel to the Y-axis. The X-axis synchronous belt 212 is parallel to the X-axis. One end of the X-axis synchronous belt 212 is connected to the motor shaft of the X-axis motor 211, and the other end of the X-axis synchronous belt 212 is mounted on the motor mounting plate 23. The Z-axis transmission drive member 22 may include a Z-axis motor 221 and a Z-axis synchronous belt 222. The Z-axis motor 221 is fixed to the motor mounting plate 23 with its motor shaft parallel to the X-axis. The Z-axis synchronous belt 222 is arranged along the Z-axis. One end of the Z-axis synchronous belt 222 is connected to the motor shaft of the Z-axis motor 221, and the other end of the Z-axis synchronous belt 222 is mounted on the motor mounting plate 23. Based on this, the X-direction transmission driving member 21 and the Z-direction transmission driving member 22 can form a two-dimensional driving structure on the XZ plane.

[0063] Combine Figure 4 In one embodiment, the pusher claw member 32 includes a transmission plate 321 and at least one pusher claw 322; the transmission plate 321 is slidably assembled on the Z-direction guide rail 34, and the pusher claw 322 is installed on the top of the transmission plate 321 and extends upward along the Z direction.

[0064] In this embodiment, the transmission plate 321 is in the shape of a long strip, and the pawl 322 can be integrally formed on the top of the transmission plate 321 or fixed to the top of the transmission plate 321 in a split manner; the transmission plate 321 is fixed on the slider of the X-direction guide rail 33 to move in the Z direction, thereby driving the pawl 322 at the top to move in the Z direction.

[0065] In this embodiment, when only one pawl 322 is provided, the lengths of the X-direction guide member 35 and the X-direction guide rail 33 need to be increased to ensure that the pawl 322 can freely hook the test tube rack in the feeding channel, which occupies a large space. Therefore, in this embodiment, it is preferably to provide two pawls 322, and the two pawls 322 are located at both ends of the top of the transmission plate 321 and are parallel in the horizontal height direction. The distance between the two is the distance of n test tube rack hole positions, (n < N, N is the number of placement holes of a row of test tube racks, ensuring stable feeding of a single row of test tube racks).

[0066] In this embodiment, as Figure 5 shown, the upper end of the pawl 322 is in the shape of a thin plate (facilitating the two-way pushing of the test tube rack), and the direction is set along the Z direction.

[0067] In one embodiment, the test tube rack reciprocating feeding device further includes an X-direction connecting member 4 and a Z-direction connecting member 5; one end of the X-direction connecting member 4 is fixedly connected to the X-direction transmission driving member 21, and the other end of the X-direction connecting member 4 is fixedly connected to the transmission bracket 31 to interlock the transmission bracket 31 to drive the pawl member 32 to move in the X direction; one end of the Z-direction connecting member 5 is fixedly connected to the Z-direction transmission driving member 22, and the other end of the Z-direction connecting member 5 is slidably connected to the pawl member 32 in the X direction and relatively fixed in the Z direction to interlock the pawl member 32 to move in the Z direction.

[0068] In this embodiment, both the X-direction connecting member 4 and the Z-direction connecting member 5 can be traction plates, and the shape of the traction plate is a strip-shaped plate, which can be used as an interlocking structure between the driving component 2 and the pawl movement component 3.

[0069] For easy understanding, this embodiment is introduced by taking the example of the driving component 2 using a motor synchronous belt drive method. One end of the X-direction connecting member 4 is fixedly crimped or clamped on the X-direction synchronous belt 212, and the other end of the X-direction connecting member 4 is fixedly connected to the transmission bracket 31 by screws. One end of the Z-direction connecting member 5 is fixedly crimped or clamped on the Z-direction synchronous belt 222, and the other end of the Z-direction connecting member 5 is slidably connected to the pawl member 32 in the X direction and relatively fixed in the Z direction. Based on this, when the X-direction transmission driving member 21 drives the transmission bracket 31 to move in the X direction through the X-direction connecting member 4, the pawl member 32 can be interlocked to move in the X direction. At this time, the Z-direction connecting member 5 will not affect the X-direction movement of the pawl member 32; while the Z-direction transmission driving member 22 drives the pawl member 32 to move up and down in the Z direction relative to the transmission bracket 31 through the Z-direction connecting member 5; thereby realizing the movement of the pawl member 32 in the XZ plane.

[0070] In one embodiment, the pusher claw motion assembly 3 also includes an X-guide rail 33 and a Z-guide rail 34; the X-guide rail 33 is fixedly mounted on the fixed plate 1, and one side of the transmission bracket 31 is slidably assembled on the X-guide rail 33; the Z-guide rail 34 is fixedly mounted on the other side of the transmission bracket 31, and the pusher claw member 32 is slidably assembled on the Z-guide rail 34.

[0071] In this embodiment, both the X-guide rail 33 and the Z-guide rail 34 consist of a guide rail body and at least one slider. One side of the transmission bracket 31 is fixed to the slider of the X-guide rail 33 to enable sliding in the X direction, while the pusher claw 32 is fixed to the slider of the Z-guide rail 34 to enable sliding in the Z direction. The Z-guide rail 34 is offset to the right of the transmission bracket 31 in the X direction (i.e., the X+ direction in the figure), and the pusher claw 32 is mounted on the Z-guide rail 34 in a position offset to the right in the X direction, thereby reducing space occupied in the X direction.

[0072] In some other embodiments, the guide rail bodies of the X-guide rail 33 and the Z-guide rail 34 may also be replaced by guide rods, racks, and other structures.

[0073] In one embodiment, the pusher claw motion assembly 3 further includes an X-direction guide 35 and a Z-direction guide 36; the X-direction guide 35 is fixedly mounted on the pusher claw member 32, and the other end of the Z-direction connecting member 5 is slidably connected to the X-direction guide 35 in the X-direction direction; the Z-direction guide 36 is arranged between the pusher claw member 32 and the transmission bracket 31, and the Z-direction guide 36 is used to guide the pusher claw member 32 when it moves in the Z direction to prevent the pusher claw member 32 from deviating in the Y direction.

[0074] In this embodiment, the X-direction guide 35 is used to connect the Z-direction connecting member 5 and the pusher claw member 32. The X-direction guide 35 can be installed on the pusher claw member 32. The Z-direction transmission drive member 22 drives the pusher claw member 32 to move in the Z direction through the Z-direction connecting member 5, and serves as a traction guide for the pusher claw member 32 to move in the X direction (compensating for the fixed degree of freedom of the drive assembly 2). Preferably, the X-direction guide 35 can be in the form of a linear guide rail because of its high integration and space saving. In other embodiments, the X-direction guide 35 can also be in the form of a guide rod, linear slide rail, etc.

[0075] In this embodiment, the Z-direction guide 36 is placed between the transmission bracket 31 and the claw member 32. The Z-direction guide 36 can be set on the claw member 32 and on the other side of the Z guide rail 34 (that is, offset to the left side of the X direction of the transmission bracket 31 (that is, the X-direction in the figure)). It is used to prevent the Y-direction deformation caused by the offset of the two claws 322 on the claw member 32 when the distance between them is large and the Z guide rail 34 is offset, that is, it plays a Y-direction limit correction role of the claw member 32; the guide cooperation between the Z-direction guide 36 and the transmission bracket 31 can adopt a limit groove 361 (refer to Figure 6 ) Clearance fit with the limit plate;

[0076] In this embodiment, the limiting groove 361 is preferably provided on the Z-direction guide 36, and the limiting plate is provided on the side of the transmission bracket 31 (the limiting plate may also be a side edge of the transmission bracket 31). The width Δ of the limiting groove 361 is equal to the thickness s of the limiting plate + 0.1-0.5 mm. In some other embodiments, the Z-direction guide 36 may also be replaced by a guide rod, guide rail, or the like.

[0077] In one embodiment, the pusher claw movement assembly 3 further includes an elastic reset member 37 ; the elastic reset member 37 is connected between the pusher claw member 32 and the fixed plate 1 ; the elastic reset member 37 is used to generate a downward pulling force after the pusher claw member 32 rises.

[0078] In this embodiment, the provision of an elastic reset member 37 can solve the problem that the pusher claw 322 cannot fall back when the instrument is powered off, thereby causing the test tube rack to be unable to be removed from the feed channel. Specifically, the elastic reset member 37 may include a spring mounting plate 371 and a pull-down spring 372. The spring mounting plate 371 is fixedly mounted on the bottom of the transmission bracket 31. The upper end of the pull-down spring 372 is connected to the pusher claw member 32, and the lower end is connected to the transmission bracket 31. The effective stretching length of the pull-down spring 372 is ≥ the movement stroke of the pusher claw 322 in the Z direction + 2mm (pre-stretching amount); the mechanical parameters of the pull-down spring 372 must meet the requirements: when the instrument is powered off, the pull-down spring 372 can pull the pusher claw 322 back to its original position; in the driving operation state, the Z-direction motor 221 can drive the pusher claw 322 to rise; in the driving holding state, during the X-direction movement, the torque of the Z-direction motor 221 is maintained to ensure that the pusher claw 322 does not fall;

[0079] In some other embodiments, the elastic reset member 37 may also be implemented by a compression spring, magnetic attraction, or the like.

[0080] In one embodiment, to ensure accurate positioning of the movement of the pusher claw motion assembly 3, multiple sets of optical couplers can be provided for motion position identification. For example, a Z-direction optical coupler 38 is provided below the Z-direction connector 5 to locate the position where the pusher claw 32 is moved downward by the Z-direction connector 5. Similarly, multiple sets of optical couplers can be provided in the Z and X directions, and corresponding optical coupler blocks can be provided on components such as the fixed bracket, the pusher claw 32, and the X-direction connector 4 to meet the motion positioning requirements of the pusher claw 32.

[0081] Based on the above-mentioned test tube rack reciprocating feeding device, the following specifically describes the process of using the test tube rack reciprocating feeding device to drive the test tube rack to reciprocate:

[0082] See also Figures 7-11 , Single-step left move test tube rack process:

[0083] See also Figure 7, the finger 322 does not move in the X and Z directions and is at position O (i.e., the initial position in the X and Z directions);

[0084] See also Figure 8 , the pusher claw 322 moves upward and extends into the test tube rack, generally 2-3.5 mm above the bottom of the test tube rack, and is at position A at this time;

[0085] See also Figure 9 , the finger 322 moves one test tube position to the left, driving the test tube rack to move forward one position, and is now in position B;

[0086] See also Figure 10 , the pusher claw 322 descends and exits the test tube rack, and is now in position C. Finally, it moves right one test tube position to return to position O.

[0087] See also Figure 12 , single-step right move test tube rack process:

[0088] The finger 322 does not move in the X and Z directions and is at position O (i.e., the initial position in the X and Z directions);

[0089] The finger 322 moves leftward by two test tube positions to position E;

[0090] The pusher claw 322 moves upward and extends into the test tube rack, generally 2-3.5 mm above the bottom of the test tube rack, and is at position F at this time;

[0091] The finger 322 moves rightward one test tube position, driving the test tube rack to move back one position, and is now in position G;

[0092] The pusher claw 322 descends and exits the test tube rack, and is now at position H. Finally, it moves rightward one test tube position to return to position O.

[0093] Based on this, the test tube rack can be intermittently moved left and right by cycling the above-mentioned single-step feeding process and double-step feeding process.

[0094] An embodiment of the present invention further provides an analyzer, comprising an injector base plate and the above-mentioned test tube rack reciprocating feeding device mounted on the injector base plate.

[0095] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A reciprocating feeding device for a test tube rack, arranged on the bottom plate of a sample injector of an analyzer, characterized in that: The test tube rack reciprocating feeding device comprises: A fixing plate, mounted on the bottom plate of the sample injector; A drive assembly is mounted on the sample injector base plate and is relatively stationary relative to the fixed plate, the drive assembly comprising an X-axis transmission drive member and a Z-axis transmission drive member; A pusher claw motion assembly includes a transmission bracket and a pusher claw member; the transmission bracket is slidably assembled on the fixed plate in the X direction and connected to the X-direction transmission drive member; the pusher claw member is slidably assembled on the transmission bracket in the Z direction and connected to the Z-direction transmission drive member; The pusher claw member is used to extend into the bottom of the test tube rack when the Z-direction transmission drive member drives the pusher claw member to rise in the Z direction, and when the transmission bracket is continued to move in the X direction by the X-direction transmission drive member, it can drive the test tube rack to reciprocate along the X direction.

2. The test tube rack reciprocating feeding device according to claim 1, characterized in that: Also includes: An X-direction connecting member, one end of which is fixedly connected to the X-direction transmission driving member, and the other end of which is fixedly connected to the transmission bracket, so as to link the transmission bracket to drive the pusher claw member to move in the X direction; The Z-direction connecting member has one end fixedly connected to the Z-direction transmission driving member, and the other end is slidably connected to the claw member in the X direction and relatively fixed in the Z direction to link the claw member to move in the Z direction.

3. The test tube rack reciprocating feeding device according to claim 1, characterized in that: The driving mode of the X-direction transmission driving member and / or the Z-direction transmission driving member is any one of motor synchronous belt driving, linear motor driving, gear rack driving, and cylinder linear transmission.

4. The test tube rack reciprocating feeding device according to claim 1, characterized in that: The pusher claw motion assembly also includes: An X-guide rail is fixedly mounted on the fixed plate, and one side of the transmission bracket is slidably mounted on the X-guide rail; The Z-guide rail is fixedly mounted on the other side of the transmission bracket, and the pusher claw is slidably assembled on the Z-guide rail.

5. The test tube rack reciprocating feeding device according to claim 2, characterized in that: The pusher claw motion assembly also includes: An X-direction guide member is fixedly mounted on the pusher claw member, and the other end of the Z-direction connecting member is slidably connected to the X-direction guide member in the X-direction direction; The Z-direction guide member is provided between the pusher claw member and the transmission bracket, and is used for guiding the pusher claw member when the pusher claw member moves along the Z-direction to prevent the pusher claw member from deviating in the Y-direction.

6. The test tube rack reciprocating feeding device according to claim 4, characterized in that: The pusher claw movement assembly further includes an elastic reset member connected between the pusher claw member and the fixed plate; the elastic reset member is used to generate a downward pulling force after the pusher claw member rises.

7. The test tube rack reciprocating feeding device according to claim 4, characterized in that: The pusher claw member includes a transmission plate and at least one pusher claw; the transmission plate is slidably assembled on the Z-direction guide rail, and the pusher claw is installed on the top of the transmission plate and extends upward along the Z direction.

8. The test tube rack reciprocating feeding device according to claim 7, characterized in that: There are two pusher claws, which are located at two ends of the top of the transmission plate and are parallel in the horizontal height direction.

9. The test tube rack reciprocating feeding device according to claim 2, characterized in that: The X-direction connecting member and the Z-direction connecting member are both traction plates.

10. An analyzer, characterized in that: The invention comprises an injector base plate and a test tube rack reciprocating feeding device as claimed in any one of claims 1 to 9 installed on the injector base plate.

Images