Material moving mechanism and sample transferring device

Abstract

The utility model belongs to the field of material transferring, and particularly relates to a material transferring mechanism and a sample transferring device.According to the material transferring mechanism, a driving assembly is used for driving a rotating shaft of a double-cam structure to rotate, a first cam and a second cam are driven to rotate, and rotation of the first cam applies thrust in the first direction to a movable seat; the first cam rotates to drive the movable base to move in the first direction, the movable base drives the material moving frame to move in the first direction while moving in the first direction, the second cam rotates to apply thrust in the second direction to the material moving frame, and then the material moving frame is driven to move in the second direction. According to the material moving mechanism, an object on the material moving frame can be driven by a power source (namely a driving assembly) through a double-cam structure to achieve compound motion in two vertical directions, the action is efficient, the structure is relatively simple and compact, displacement is accurate and stable, and miniaturization design and stable and reliable sample transferring of a sample transferring device adopting the material moving mechanism are facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of material transfer, and in particular, to a material transfer mechanism and a sample transfer device. Background Art

[0002] In the automation industry, mechanisms for vertically conveying workpieces / materials / products in the X-axis and Z-axis directions are often used. For example, in a molecular detection instrument, it is necessary to move a sample tube up and down and left and right to achieve the displacement of the sample tube. At present, there are many mechanisms that can achieve vertical movement in the X-axis and Z-axis directions. However, the existing mechanisms often adopt a cam groove structure, which often has inaccurate positioning, large impact force, and a relatively complex structure and large occupied space, and cannot meet the requirements of high efficiency, compact structure, and accurate and stable displacement in automated equipment. Summary of the Utility Model

[0003] Embodiments of the present application provide a material transfer mechanism and a sample transfer device, which are used to solve the problems of relatively complex structure, large occupied space, inaccurate displacement, and low efficiency of the existing mechanisms for vertical movement.

[0004] To this end, according to one aspect of the present application, a material transfer mechanism is provided, including:

[0005] A carrier;

[0006] A movable seat, slidably arranged on the carrier in a first direction, and a pushing member is provided on the movable seat;

[0007] A material transfer frame, slidably arranged on the movable seat in a second direction perpendicular to the first direction, and the material transfer frame is used to carry materials;

[0008] A double-cam structure, including a rotating shaft rotatably arranged on the carrier, a first cam and a second cam fixed on the rotating shaft, the first cam abuts against the pushing member, the second cam abuts against the material transfer frame, and during the rotation of the rotating shaft, the first cam can apply a thrust force along the first direction to the movable seat, and the second cam can apply a thrust force along the second direction to the material transfer frame; and

[0009] A driving component, arranged on the carrier and drivingly connected to the rotating shaft, and the driving component is used to drive the rotating shaft to rotate.

[0010] Optionally, an elastic reset member is arranged between the carrier and the movable seat, and the elastic reset member provides an elastic force for the pushing member to always contact the first cam.

[0011] Optionally, the elastic reset member includes a spring, one end of the spring is connected to the carrier, and the other end is connected to the movable seat.

[0012] Optionally, the pushing member includes a bracket disposed on the movable seat and a roller rotatably disposed on the bracket, and the first cam abuts against the circumferential side of the roller.

[0013] Optionally, the first direction is the horizontal direction, the second direction is the vertical direction, the lower end surface of the material transfer rack is a horizontal plane extending along the first direction, and under the self-weight of the material transfer rack, the lower end surface of the material transfer rack is always in contact with the second cam.

[0014] Optionally, a guide rail extending along the first direction is disposed on the carrier, a slider adapted to the guide rail is disposed on the movable seat, and the slider is slidably connected to the guide rail.

[0015] Optionally, the driving assembly includes a driving motor, and an output shaft of the driving motor is connected to the rotating shaft.

[0016] Optionally, the carrier includes a mounting vertical plate having a first side and a second side disposed opposite to each other, the movable seat and the double-cam structure are disposed on the first side, and the driving assembly is disposed on the second side.

[0017] According to another aspect of the present application, a sample transfer device is provided, including:

[0018] The material transfer mechanism as described above; and

[0019] A sample tube carrier rack disposed on the material transfer rack of the material transfer mechanism, and the sample tube carrier rack is used for placing sample tubes.

[0020] Optionally, the sample tube carrier rack has a plurality of slots arranged at intervals, a notch is provided on one side of the slot, and an elastic member protruding into the interior of the slot is disposed in the notch.

[0021] The beneficial effects of the material transfer mechanism and the sample transfer device provided by the present application are as follows: Compared with the prior art, the material transfer mechanism of the present application uses the driving assembly to drive the rotating shaft of the double-cam structure to rotate, driving the first cam and the second cam to perform rotational movements. The rotation of the first cam applies a thrust along the first direction to the movable seat, thereby driving the movable seat to move along the first direction. While the movable seat moves along the first direction, it drives the material transfer rack to move along the first direction together. The rotation of the second cam applies a thrust along the second direction to the material transfer rack, thereby driving the material transfer rack to move along the second direction. Using a single power source (i.e., the driving assembly) through the double-cam structure can drive an object located on the material transfer rack to achieve a compound movement in two perpendicular directions. The action is efficient, the structure is relatively simple and compact, the displacement is accurate and stable, which is beneficial to the miniaturized design of the sample transfer device adopting this material transfer mechanism and the stable and reliable transfer of samples. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0023] Among them:

[0024] Figure 1 is a schematic structural diagram of a material transfer mechanism shown in an embodiment of the present application;

[0025] Figure 2 is Figure 1 a schematic structural diagram of another perspective of the material transfer mechanism shown in

[0026] Figure 3 is a disassembled schematic diagram of a material transfer mechanism shown in an embodiment of the present application;

[0027] Figure 4 is a schematic structural diagram of a sample transfer device shown in an embodiment of the present application;

[0028] Figure 5 is a schematic structural diagram of a sample tube carrier in a sample transfer device shown in an embodiment of the present application.

[0029] Main element symbol description:

[0030] 100, carrier; 11, spring fixing seat;

[0031] 200, movable seat; 21, pushing member; 211, bracket; 212, roller; 22, spring fixing block;

[0032] 300, material transfer rack;

[0033] 400, double cam structure; 410, rotating shaft; 420, first cam; 430, second cam;

[0034] 500, driving assembly; 510, driving motor; 520, coupling; 530, motor mounting seat;

[0035] 600, elastic reset member;

[0036] 700, guide rail;

[0037] 800, slider;

[0038] 900, sample tube carrier; 901, slot; 91, elastic member. Detailed implementation manners

[0039] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant accompanying drawings. Preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0041] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0042] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0044] It should also be noted that in the embodiments of the present application, the same reference numerals are used to represent the same components or the same parts. For the same parts in the embodiments of the present application, only one of the parts or components may be marked with a reference numeral in the figure. It should be understood that the reference numerals are equally applicable to other identical parts or components.

[0045] According to one aspect of the present application, an embodiment of the present application provides a material transfer mechanism, such as Figures 1 - 3As shown, the material moving mechanism comprises a carrier 100, a movable seat 200, a material moving frame 300, a double cam structure 400 and a driving assembly 500. The movable seat 200 is slidably arranged on the carrier 100 along a first direction, and a push piece 21 is provided on the movable seat 200. The material moving frame 300 is slidably arranged on the movable seat 200 along a second direction perpendicular to the first direction, and the material moving frame 300 is used to carry materials. The double cam structure 400 comprises a rotating shaft 410 rotatably arranged on the carrier 100 and a first cam 420 and a second cam 430 fixed on the rotating shaft 410, the first cam 420 is against the push piece 21, and the second cam 430 is against the material moving frame 300, and during the rotation of the rotating shaft 410, the first cam 420 can apply a thrust along the first direction to the movable seat 200, and the second cam 430 can apply a thrust along the second direction to the material moving frame 300. The driving assembly 500 is disposed on the carrier 100 and is transmission-connected to the rotating shaft 410 . The driving assembly 500 is used to drive the rotating shaft 410 to rotate.

[0046] It can be understood that the cam mechanism has the advantages of simple and compact structure, high transmission efficiency, high transmission accuracy, and relatively smooth transmission.

[0047] In the embodiment of the present application, the material moving mechanism utilizes the driving component 500 to drive the rotating shaft 410 of the double cam structure 400 to rotate, thereby driving the first cam 420 and the second cam 430 to rotate. The rotation of the first cam 420 applies a thrust along the first direction to the movable seat 200, thereby driving the movable seat 200 to move along the first direction. While the movable seat 200 moves along the first direction, it drives the material moving rack 300 to move along the first direction. The rotation of the second cam 430 applies a thrust along the second direction to the material moving rack 300, thereby driving the material moving rack 300 to move along the second direction. A power source (i.e., the driving component 500) can be used to drive the object located on the material moving rack 300 to realize a compound motion in two vertical directions through the double cam structure 400. The action is efficient, the structure is relatively simple and compact, and the displacement is precise and stable.

[0048] The carrier 100 is not only a component for installing the movable seat 200, the double cam structure 400 and the driving assembly 500, but also a component for externally installing the entire material moving mechanism. Its shape and structure can be realized in many ways, which are not limited here.

[0049] The first cam 420 and the second cam 430 are both disc cams, and their respective shapes and sizes can be set as needed, which is not limited here. For example, in the embodiment of the present application, the first cam 420 and the second cam 430 are both roughly fan-shaped, and the size of the fan-shaped radius of the first cam 420 and the second cam 430 is determined by the travel of the material moving rack 300 in the first direction and the second direction.

[0050] In one embodiment, ifFigure 1 and Figure 3 As shown in Figure 3 , in order to keep the first cam 420 in constant contact with the follower (i.e., the pushing member 21), an elastic reset member 600 is provided between the carrier 100 and the movable seat 200. The elastic reset member 600 provides an elastic force for the pushing member 21 to keep it in constant contact with the first cam 420. The elastic reset member 600 ensures the close contact between the pushing member 21 and the first cam 420 and the reset of the pushing member 21.

[0051] In one implementation, the elastic reset member 600 is a spring. One end of the spring is connected to the carrier 100, and the other end is connected to the movable seat 200. Specifically, a spring fixing seat 11 is installed on the carrier 100, and a spring fixing block 22 is installed on the movable seat 200. The spring fixing seat 11 and the spring fixing block 22 are spaced apart in the first direction, and the two ends of the spring are fixedly connected to the spring fixing seat 11 and the spring fixing block 22 respectively.

[0052] It can be understood that in other implementations, the elastic reset member 600 can also be a rubber band, a reed or other components that can provide elastic force.

[0053] In one embodiment, as shown in Figure 1 and Figure 3 shown, the pushing member 21 includes a bracket 211 provided on the movable seat 200 and a roller 212 rotatably provided on the bracket 211. The first cam 420 abuts against the circumferential side of the roller 212.

[0054] With the above settings, the pushing member 21 forms a roller follower, which reduces frictional losses and extends the service life during the process of the first cam 420 pushing the roller 212.

[0055] It can be conceived that the pushing member 21 can also be a strip-shaped pushing block, and one side surface of the pushing block contacts the first cam 420, thereby forming a flat-bottom follower. However, there will be frictional losses between this kind of pushing member 21 and the first cam 420, and it needs to be replaced regularly.

[0056] In one embodiment, as shown in Figure 1 shown, the first direction is the horizontal direction, and the second direction is the vertical direction. The lower end surface of the material transfer rack 300 is a horizontal plane extending in the first direction. Under the self-weight of the material transfer rack 300, the lower end surface of the material transfer rack 300 is always in contact with the second cam 430.

[0057] Designing the lower end surface of the material transfer rack 300 as a horizontal plane extending in the first direction enables the lower end surface of the material transfer rack 300 to always maintain close contact with the second cam 430 under its own weight during the process of the material transfer rack 300 moving along the first direction with the movable seat 200.

[0058] For the convenience of understanding and description of directions, a spatial coordinate system is established in the figure. Among them, the direction where the X-axis is located is the first direction, and the direction where the Z-axis is located is the second direction.

[0059] In one embodiment, as Figure 1 and Figure 3 shown, a guide rail 700 extending along the first direction is provided on the carrier 100, and a slider 800 adapted to the guide rail 700 is provided on the movable seat 200. The slider 800 is slidably connected to the guide rail 700.

[0060] It can be understood that "the material transfer rack 300 is slidably arranged on the movable seat 200 along the second direction" can be achieved in the following ways:

[0061] In one implementation manner, a through hole extending along the second direction is formed in the movable seat 200, and the material transfer rack 300 has a sliding rod slidably disposed in the through hole;

[0062] In another implementation manner, a track extending along the second direction is fixed on the movable seat 200, and a guide block adapted to the track is fixed on the material transfer rack 300. The guide block is slidably connected to the track.

[0063] In one embodiment, as Figure 1 and Figure 2 shown, the drive assembly 500 includes a drive motor 510, and the output shaft of the drive motor 510 is connected to the rotating shaft 410.

[0064] Specifically, the drive motor 510 can be a stepper servo motor. The drive motor 510 is mounted on the carrier 100 through a motor mounting seat 530, and the motor shaft of the drive motor 510 is connected to the rotating shaft 410 in the double cam structure 400 through a coupling 520.

[0065] In one embodiment, as Figures 1 - 3 shown, the carrier 100 includes a mounting vertical plate. The mounting vertical plate has a first side and a second side disposed opposite to each other. The movable seat 200 and the double cam structure 400 are disposed on the first side, and the drive assembly 500 is disposed on the second side.

[0066] Using the mounting vertical plate as the carrier 100 has a simple structure and low cost. The drive assembly 500 is separately disposed on one side of the mounting vertical plate without interfering with the movable seat 200, the material transfer rack 300, and the double cam structure 400. The spatial layout is reasonable and the overall structure is more compact.

[0067] According to another aspect of the present application, an embodiment of the present application further provides a sample transfer device, as Figure 4As shown in the figure, the sample transfer device includes the material transfer mechanism in any of the above embodiments and a sample tube carrier 900. The sample tube carrier 900 is arranged on the material transfer rack 300 of the material transfer mechanism, and the sample tube carrier 900 is used for placing sample tubes.

[0068] The transfer of the sample tube is realized through the material transfer mechanism. Since the material transfer mechanism in the above embodiment is adopted, the sample transfer device accordingly has the advantages and benefits brought by the above material transfer mechanism, which is conducive to the miniaturized design of the sample transfer device and the stable and reliable transfer of samples.

[0069] In one embodiment, as Figure 5 shown, the sample tube carrier 900 has a plurality of slots 901 arranged at intervals. The slots 901 are used for placing sample tubes. One side of the slot 901 is provided with a notch, and an elastic member 91 protruding into the interior of the slot 901 is arranged in the notch. The elastic member 91 is used for elastically abutting against the side wall of the sample tube to improve the stability of the sample tube in the slot 901 and prevent loosening or falling during the transfer process.

[0070] Specifically, the elastic member 91 can adopt a spring piece bent into the slot 901.

[0071] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0072] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A material transfer mechanism, characterized in that: include: A carrier (100); A movable seat (200) is slidably disposed on the carrier (100) along a first direction, and a push member (21) is provided on the movable seat (200); A material moving rack (300) is slidably disposed on the movable seat (200) along a second direction perpendicular to the first direction, and the material moving rack (300) is used to carry materials; The double cam structure (400) comprises a rotating shaft (410) rotatably arranged on the carrier (100) and a first cam (420) and a second cam (430) fixed on the rotating shaft (410), wherein the first cam (420) abuts against the abutting member (21), and the second cam (430) abuts against the material moving rack (300); during the rotation of the rotating shaft (410), the first cam (420) can apply a thrust along the first direction to the movable seat (200), and the second cam (430) can apply a thrust along the second direction to the material moving rack (300); as well as A driving assembly (500) is disposed on the carrier (100) and is drivingly connected to the rotating shaft (410), and the driving assembly (500) is used to drive the rotating shaft (410) to rotate.

2. The material transfer mechanism according to claim 1, characterized in that: An elastic return member (600) is provided between the carrier (100) and the movable seat (200), and the elastic return member (600) provides the push member (21) with an elastic force to keep it in contact with the first cam (420) at all times.

3. The material transfer mechanism according to claim 2, characterized in that: The elastic return member (600) comprises a spring, one end of which is connected to the carrier (100), and the other end of which is connected to the movable seat (200).

4. The material transfer mechanism according to claim 1, characterized in that: The push member (21) comprises a bracket (211) arranged on the movable seat (200) and a roller (212) rotatably arranged on the bracket (211), and the first cam (420) abuts against the peripheral side of the roller (212).

5. The material transfer mechanism according to claim 1, characterized in that: The first direction is a horizontal direction, the second direction is a vertical direction, the lower end surface of the material moving rack (300) is a horizontal plane extending along the first direction, and under the deadweight of the material moving rack (300), the lower end surface of the material moving rack (300) is always in contact with the second cam (430).

6. The material transfer mechanism according to claim 1, characterized in that: The carrier (100) is provided with a guide rail (700) extending along the first direction, and the movable seat (200) is provided with a slider (800) adapted to the guide rail (700), and the slider (800) is slidably connected to the guide rail (700).

7. The material transfer mechanism according to claim 1, characterized in that: The driving assembly (500) comprises a driving motor (510), and an output shaft of the driving motor (510) is connected to the rotating shaft (410).

8. The material transfer mechanism according to claim 1, characterized in that: The carrier (100) comprises a mounting plate having a first side and a second side which are arranged opposite to each other, the movable seat (200) and the double cam structure (400) are arranged on the first side, and the driving assembly (500) is arranged on the second side.

9. A sample transfer device, characterized in that: include: The material transfer mechanism according to any one of claims 1 to 8; as well as The sample tube carrier (900) is arranged on the material transfer rack (300) of the material transfer mechanism, and the sample tube carrier (900) is used to place sample tubes.

10. The sample transfer device according to claim 9, characterized in that: The sample tube carrier (900) has a plurality of slots (901) arranged at intervals, one side of the slots (901) is provided with a notch, and an elastic member (91) protruding toward the inside of the slots (901) is arranged in the notch.

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