Sample sorting system

Abstract

To provide a sample sorting system comprising a gripping hand capable of stably gripping multiple objects at the same time.SOLUTION: A sample sorting system comprises: a gripping device 107 including a gripping hand 100; and a control device 104 for controlling the gripping device 107. The gripping hand 100 has multiple fingers including a first finger 400 and a second finger 401, and grips multiple objects 105 using the multiple fingers. The first finger 400 has multiple recesses 404 along a lengthwise direction of the first finger 400, at positions directed toward the second finger 401. The second finger 401 has an inclined plane 405 along a lengthwise direction of the second finger 401, at a position directed toward the first finger 400.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sample sorting system equipped with a gripping device capable of gripping multiple objects simultaneously. [Background technology]

[0002] In medical laboratories and the like, specimen sorting systems equipped with gripping devices are used for sorting specimens (e.g., test tubes). The gripping device has a gripping hand with fingers for gripping an object such as a specimen, and grips the object with the fingers of the gripping hand.

[0003] Examples of conventional devices that grip multiple objects with a gripping hand are described in Patent Documents 1 and 2.

[0004] Patent document 1 describes a twin gripper for simultaneously gripping two round section parts. In the twin gripper described in Patent document 1, the first bearing means and the second bearing means are connected to each other in a fixed position, the first further bearing means and the second further bearing means are elastically connected to each other, and the two bearing means can be displaced back and forth in a displacement direction relative to the two further bearing means.

[0005] Patent Document 2 describes a gripping device for long members that can grip multiple pipes. The gripping device described in Patent Document 2 includes a gripping mechanism with a first holding member having an arch-shaped recessed portion at its lower portion, and a push-up mechanism with a second holding member having an arch-shaped protruding portion at its upper portion, with at least two pairs of gripping mechanisms and push-up mechanisms arranged along the length of the long member, and multiple long objects are sandwiched between the recessed portion of the first holding member and the protruding portion of the second holding member. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Special Publication No. 2016-538141 [Patent Document 2] JP 2001-047388 A Summary of the Invention [Problem to be solved by the invention]

[0007] A sample sorting system is required to perform the task of grasping samples placed randomly and placing the grasped samples in designated locations with high accuracy and high throughput. For this reason, it is desirable for the grasping hand to be able to grasp multiple objects (samples) placed on a flat surface simultaneously and stably. However, with conventional devices, even if multiple objects placed on a flat surface are grasped simultaneously, there is a problem that the grasping of the objects becomes unstable, for example, because the fingers of the grasping hand cannot make sufficient contact with the multiple objects.

[0008] An object of the present invention is to provide a sample sorting system equipped with a gripping hand that can stably grip multiple objects simultaneously. [Means for solving the problem]

[0009] A sample sorting system according to the present invention includes a gripping device having a gripping hand, and a control device for controlling the gripping device. The gripping hand includes a plurality of fingers including a first finger and a second finger, and grips a plurality of objects with the plurality of fingers. The first finger includes a plurality of recesses along a length direction of the first finger at a position facing the second finger. The second finger includes a slope along a length direction of the second finger at a position facing the first finger. Effect of the Invention

[0010] According to the present invention, a sample sorting system having a gripping hand capable of stably gripping multiple objects simultaneously can be provided. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram showing an example of the configuration of a sample sorting system according to a first embodiment of the present invention. [Diagram 2]FIG. 2 is a diagram illustrating an example of the configuration of a control device of the sample sorting system. [Diagram 3] 4 is a flowchart illustrating an example of a process executed by a control device. [Figure 4] 3 is a diagram showing an example of a configuration of a gripping hand included in a gripping device in the first embodiment. FIG. [Diagram 5] 13A and 13B are diagrams showing how the gripping hand places a plurality of gripped samples in a sample rack. [Figure 6A] 13 is a diagram showing an example of the configuration of a gripping hand included in a gripping device in a second embodiment. FIG. [Figure 6B] 13 is a diagram showing an example of the configuration of a gripping hand in which a rotating part is connected to a first finger by an elastic member. FIG. [Figure 7] 13 is a diagram showing an example of the configuration of a gripping hand included in a gripping device in a third embodiment. FIG. [Figure 8] 13 is a schematic diagram showing the fingers of a gripping hand of a sample sorting system according to Example 5, viewed from above a plane on which samples are placed. [Figure 9] FIG. 13 is a schematic diagram showing a configuration in which a gripping hand has two finger groups in a sample sorting system according to Example 5, as viewed from above a plane on which samples are placed. [Figure 10] 13A and 13B are diagrams showing examples of a recess for a first finger having a shape composed of multiple planes. [Figure 11] FIG. 13 is a diagram showing a second finger having a curved slope. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] The specimen sorting system according to the present invention includes a gripping hand for gripping a plurality of objects, and can be used, for example, in sorting specimens (e.g., test tubes) in a medical laboratory or the like. The gripping hand includes a plurality of fingers, at least two of which have different shapes. Specifically, one of the plurality of fingers includes a plurality of recesses along the length of the finger, and the other finger includes a slope along the length of the finger. The gripping hand can simultaneously grip a plurality of objects by arranging them along the length of the fingers using the slopes of the fingers. Parts of the gripped objects fit into the recesses of the fingers. Therefore, the gripping hand can stably grip a plurality of objects simultaneously. The gripping hand can grip cylindrical or spherical objects.

[0013] Hereinafter, a sample sorting system according to an embodiment of the present invention will be described with reference to the drawings. However, the present invention should not be interpreted as being limited to the description of the embodiment shown below. The specific configurations described in the embodiment can be arbitrarily changed without departing from the concept and purpose of the present invention.

[0014] In the drawings used in this specification, the same or corresponding components are designated by the same reference numerals, and repeated description of these components may be omitted.

[0015] In this specification, the terms "first," "second," "third," and the like are used to distinguish components and do not necessarily limit the number or order. EXAMPLES

[0016] 1 is a diagram showing an example of the configuration of a sample sorting system according to a first embodiment of the present invention. The sample sorting system according to this embodiment includes a gripping device 107 and a control device 104. The gripping device 107 and the control device 104 can communicate with each other via a network. This network can be any network, such as a WAN (Wide Area Network) or a LAN (Local Area Network).

[0017] The gripping device 107 is a robot that grips a plurality of objects and places the gripped objects at designated locations. For example, the gripping device 107 grips a plurality of specimens 105 in a work space such as a medical examination room and places the gripped specimens 105 in a specimen rack 106. In the following, an example will be described in which the object gripped by the gripping device 107 is a cylindrical specimen 105.

[0018] In this embodiment, the gripping device 107 can simultaneously grip two specimens 105 on a flat surface.

[0019] The gripping device 107 includes a robot controller 103 , an object information acquisition device 101 , a manipulator 102 , and a gripping hand 100 .

[0020] The robot controller 103 controls the entire gripping device 107 , including the object information acquisition device 101 , the manipulator 102 , and the gripping hand 100 , based on control information received from the control device 104 .

[0021] The object information acquisition device 101 acquires object information indicating the state of a plurality of specimens 105 from the working space of the gripping device 107. The object information acquisition device 101 may be configured, for example, with a camera that acquires images. The object information includes data on the size, shape, attitude, position, etc. of the specimens 105.

[0022] The gripping device 107 may include a plurality of object information acquisition devices 101 that acquire the same type of object information, or may include a plurality of object information acquisition devices 101 that acquire different types of object information.

[0023] The manipulator 102 has links and joints, and the links move the gripping hand 100. The manipulator 102 further has a driving device (not shown) for moving the links in a predetermined direction with the joints as fulcrums.

[0024] The gripping hand 100 has a plurality of fingers (for example, a first finger 400 and a second finger 401 described later) and grips one or more objects (specimens 105). These multiple fingers form one set of fingers. The gripping hand 100 can grip a plurality of specimens 105 with this set of fingers. The gripping hand 100 grips the specimen 105 by closing the set of fingers, and releases the gripped specimen 105 by opening the set of fingers. Hereinafter, the direction in which the fingers open and close is referred to as the "opening and closing direction". Furthermore, the gripping hand 100 has a driving device (not shown) that opens and closes the fingers. The driving device moves the fingers of the gripping hand 100 in the opening and closing direction. The gripping hand 100 may also have sensors such as a force sensor and a tactile sensor.

[0025] The gripping device 107 may include a plurality of devices of the same type as the manipulator 102 and the gripping hand 100 .

[0026] The control device 104 controls the gripping device 107. The control device 104 acquires various information from the gripping device 107, generates control information for controlling the gripping device 107, and transmits the generated control information to the gripping device 107.

[0027] 2 is a diagram showing an example of the configuration of the control device 104. The control device 104 includes a processor 200, a main memory device 201, a secondary memory device 202, a network interface (NW IF) 203, and an input / output interface (IO IF) 204. These components are connected to each other via an internal bus.

[0028] 2 is an example, and the hardware configuration of the control device 104 is not limited thereto. For example, the control device 104 may include hardware that is not shown, or may not include some of the hardware, such as the secondary storage device 202 and the input / output interface 204.

[0029] The processor 200 executes a program stored in the main memory device 201. The processor 200 operates as a functional unit (module) that realizes a specific function by executing processes in accordance with the program.

[0030] The main memory device 201 can be configured with a storage device such as a DRAM (Dynamic Random Access Memory), and stores programs executed by the processor 200 and information used by the programs. The main memory device 201 is also used as a work area used by the programs.

[0031] The programs and information may be stored in a device or apparatus other than the main memory device 201, such as a secondary memory device 202. In this case, the processor 200 reads the programs and information from this device or apparatus and stores them in the main memory device 201.

[0032] The secondary storage device 202 can be configured with a storage device such as a hard disk drive (HDD) or a solid state drive (SSD), and stores data persistently.

[0033] The network interface 203 is an interface for the control device 104 to communicate with an external device such as the gripping device 107 via a network.

[0034] The input / output interface 204 is an interface for connecting the control device 104 to an input device, an output device, etc. The input device can be configured with a keyboard, a mouse, a touch panel, etc., and the output device can be configured with a display, a printer, etc.

[0035] FIG. 3 is a flowchart illustrating an example of processing executed by the control device 104.

[0036] In step S301, the control device 104 acquires object information of an object to be gripped that exists in the working space from the gripping device 107. The objects to be gripped are a plurality of specimens 105. The range in the working space from which the object information is to be acquired may be determined by a user operating the control device 104, or may be determined by the robot controller 103 of the gripping device 107.

[0037] In step S302, the control device 104 determines a plurality of specimens 105 to be grasped based on the acquired object information, calculates grasping positions for grasping the plurality of specimens 105, and generates a trajectory plan to the grasping positions. The trajectory plan to the grasping positions is control information for controlling the grasping device 107.

[0038] The control device 104 can determine the multiple specimens 105 to be simultaneously gripped based on, for example, the relative positions of the multiple specimens 105. The control device 104 can calculate gripping positions at which the multiple specimens 105 can be simultaneously gripped by, for example, determining the center positions of the multiple specimens 105 based on the shapes and positions of the specimens 105. The trajectory plan to the gripping position is information on the trajectory of the movement of the manipulator 102 and the gripping device 107 for moving the gripping hand 100 to the gripping position. The control device 104 can generate this trajectory plan using an existing method.

[0039] The multiple specimens 105 to be grasped determined in step S302 are multiple specimens 105 to be grasped, and are referred to as a group of specimens to be grasped or a group of objects to be grasped.

[0040] In step S303, the control device 104 determines the distance by which the fingers of the gripping hand 100 are to be spread apart based on information about the sample group to be gripped, and moves the fingers in the spreading direction by the determined distance.

[0041] In step S304, the control device 104 moves the gripping hand 100 to the gripping position based on the control information (trajectory plan to the gripping position) generated in step S302.

[0042] In step S305, the control device 104 moves the fingers of the gripping hand 100 in a direction to close. The gripping hand 100 then starts gripping the sample group to be gripped. The control device 104 determines the distance by which the fingers of the gripping hand 100 will close based on information about the sample group to be gripped, and moves the fingers the determined distance in the direction to close.

[0043] In step S306, the gripping hand 100 grips the sample group to be gripped. In this embodiment, the sample group to be gripped is two samples 105. In this embodiment, due to the configuration of the fingers of the gripping hand 100 described with reference to FIG. 4, one sample 105 moves in the length direction of the fingers during the gripping operation, and the two samples 105 are gripped side by side along the length direction of the fingers.

[0044] Fig. 4 is a diagram showing an example of the configuration of the gripping hand 100 provided in the gripping device 107 in this embodiment. Fig. 4 shows four states (a) to (d) that represent the gripping operation of the gripping hand 100 in chronological order. The gripping operation of the gripping hand 100 progresses in the order of states (a) to (d).

[0045] The gripping hand 100 has a pair of fingers, a first finger 400 and a second finger 401, to grip a plurality of cylindrical objects. In this embodiment, the objects gripped by the gripping hand 100 are a plurality of specimens 105 (105a, 105b). The first finger 400 and the second finger 401 face each other. The first finger 400 is positioned so that it can contact the specimen 105a, and the second finger 401 is positioned so that it can contact the specimen 105b.

[0046] The first finger 400 has a plurality of recesses 404 along the length of the finger at a position facing the second finger 401. The recesses 404 are arc-shaped and are shaped to follow part of the contour of the specimen 105 to be grasped. In this embodiment, the grasping hand 100 grasps two specimens 105a and 105b, so the number of recesses 404 is two. That is, the first finger 400 has a recess 404 on the tip side and a recess 404 on the base side.

[0047] In addition, in the first finger 400 and the second finger 401, the portions on the lower side in FIG. 4 are the tips, and the portions on the upper side in FIG. 4 are the bases.

[0048] The second finger 401 has a slope 405 along the length of the finger at a position facing the first finger 400. The slope 405 is flat and has a shape that moves away from the first finger 400 as it moves from the tip to the base of the second finger 401. In other words, the slope 405 makes the second finger 401 thinner from the tip to the base.

[0049] 4A shows a state in which the gripping hand 100 is attempting to simultaneously grip two specimens 105a and 105b on a plane and is beginning to close its first finger 400 and second finger 401. In FIG. 4, the left-right direction is the opening and closing direction.

[0050] 4(b) shows a state in which the first finger 400 and the second finger 401 are closing, the first finger 400 contacting one specimen 105a, and the second finger 401 contacting the other specimen 105b. A part of the specimen 105a enters the recess 404 on the tip side of the first finger 400 out of the two recesses 404 of the first finger 400. The specimen 105b contacts the slope 405 of the second finger 401.

[0051] 4 shows a state in which first finger 400 and second finger 401 are further closed from state (b), and specimen 105b moves toward the base of second finger 401 along inclined surface 405 of second finger 401. Specimen 105b moves toward the base of second finger 401 due to the gripping force of gripping hand 100 (the pushing force of second finger 401) and the action of inclined surface 405 of second finger 401.

[0052] 4 shows a state (d) in which the first finger 400 and the second finger 401 have finished closing, and the grasping operation of the grasping hand 100 has ended. When the first finger 400 and the second finger 401 continue to close from the state (c), the specimen 105b moves further along the slope 405 of the second finger 401 toward the base of the second finger 401, and a part of the specimen 105b enters the recess 404 on the base side of the first finger 400 out of the two recesses 404 of the first finger 400.

[0053] In this way, the gripping hand 100 can simultaneously grip two specimens 105 aligned along the length direction of the first finger 400 and the second finger 401. When the two specimens 105 are gripped, a part of each of them enters the recess 404. Therefore, the gripping hand 100 can stably grip two specimens 105 simultaneously.

[0054] The gripping hand 100 places a plurality of samples 105 gripped by the first finger 400 and the second finger 401 in a sample rack 106. In this embodiment, the two samples 105 gripped by the gripping hand 100 are placed in two recesses 404 of the first finger 400. The distance between the two recesses 404 in the longitudinal direction of the first finger 400 is preferably equal to the distance between the samples 105 arranged adjacent to each other in the sample rack 106.

[0055] 5 is a diagram showing how the gripping hand 100 places a plurality of gripped samples 105 in a sample rack 106. The gripping hand 100 places two samples 105 gripped by a first finger 400 and a second finger 401 in the sample rack 106.

[0056] When the distance d1 between the two recesses 404 of the first finger 400 in the longitudinal direction of the first finger 400 is equal to the distance d2 between the samples 105 arranged adjacent to each other in the sample rack 106, the gripping hand 100 can place the two samples 105 in the sample rack 106 while holding the samples 105 without changing the attitude and position of the samples 105. Therefore, when the distance d1 is equal to the distance d2, the efficiency of the operation of the gripping device 107 to grip the samples 105 and place them in the sample rack 106 can be further improved.

[0057] In the above description, the shape of the recess 404 of the first finger 400 is an arc shape. The shape of the recess 404 can be any shape as long as a part of the specimen 105 can enter the recess 404 when the gripping hand 100 grips the specimen 105. For example, the shape of the recess 404 of the first finger 400 can be a shape composed of a plurality of planes.

[0058] Fig. 10 is a diagram showing an example of a recess 404 of a first finger 400 having a shape formed by a plurality of planes. Fig. 10 shows an example in which the recess 404 has a shape formed by two planes.

[0059] The recess 404 of the first finger 400 is preferably provided with a flexible member. The flexible member is a member that is softer than the other parts of the first finger 400, and can be made of a material having flexibility or elasticity. When the recess 404 is provided with a flexible member, the gripping hand 100 can grip the specimen 105 more stably.

[0060] In the above description, the inclined surface 405 of the second finger 401 is a flat surface. The inclined surface 405 may be a curved surface. For example, the inclined surface 405 may be a curved surface that is recessed toward the outside of the finger in the opening and closing direction of the fingers of the gripping hand 100.

[0061] Fig. 11 is a diagram showing a second finger 401 having a curved inclined surface 405. Fig. 11 shows an example in which the inclined surface 405 of the second finger 401 is a curved surface that is recessed toward the outside of the finger in the opening and closing direction of the fingers of the gripping hand 100.

[0062] The inclined surface 405 of the second finger 401 is preferably made of a slippery material. A slippery material is a material that has less friction (a smaller coefficient of friction) than the other parts of the second finger 401 that are made of the slippery material. When the inclined surface 405 is made of a slippery material, the specimen 105 moves along the inclined surface 405 more easily (state (c) in FIG. 4), and the gripping hand 100 can grip the specimen 105 more stably.

[0063] In the gripping operation of the gripping hand 100, even if the fingers of the gripping hand 100 close, there are cases where the fingers do not close by the distance determined by the control device 104 (i.e., one or both of the first finger 400 and the second finger 401 do not move by the specified distance). This is the case when the fingers of the gripping hand 100 stop closing midway during the gripping operation (for example, when the gripping operation stops at state (b) in FIG. 4). The sample sorting system according to this embodiment can deal with such a case as follows.

[0064] The object information acquisition device 101 can also acquire the positions of the first finger 400 and the second finger 401. The control device 104 acquires the positions of the first finger 400 and the second finger 401 acquired by the object information acquisition device 101 from the gripping device 107. Then, when the fingers of the gripping hand 100 are closed but the fingers are not closed by the determined distance, the control device 104 opens the fingers of the gripping hand 100 and closes the fingers of the gripping hand 100 again to perform the gripping operation. Alternatively, when the fingers of the gripping hand 100 are closed but the fingers are not closed by the determined distance, the control device 104 opens the fingers of the gripping hand 100 a little, moves the gripping hand 100 a little to change the position of the gripping hand 100, and then performs the gripping operation again.

[0065] In the above description, the number of recesses 404 of the first finger 400 is two, and the gripping hand 100 simultaneously grips two specimens 105. The number of recesses 404 may be three or more, so that the gripping hand 100 can simultaneously grip three or more specimens 105. However, in the configuration of the gripping hand 100 in this embodiment, it is preferable that the number of recesses 404 is two in order to simultaneously grip a plurality of specimens 105 more stably.

[0066] As described above, the specimen sorting system according to this embodiment includes the gripping hand 100 that can stably grip a plurality of objects (specimens 105) simultaneously. EXAMPLES

[0067] A sample sorting system according to a second embodiment of the present invention will be described below. The following mainly describes the differences between the sample sorting system according to this embodiment and the sample sorting system according to the first embodiment. In this embodiment, the gripping device 107 can simultaneously grip three samples 105 on a plane. Below, an example will be described in which the object gripped by the gripping device 107 is a cylindrical sample 105.

[0068] Fig. 6A is a diagram showing an example of the configuration of the gripping hand 100 provided in the gripping device 107 in this embodiment. Fig. 6A shows five states (a) to (e) that represent the gripping operation of the gripping hand 100 in chronological order. The gripping operation of the gripping hand 100 progresses in the order of states (a) to (e).

[0069] The gripping hand 100 has a first finger 400 and a second finger 401, and simultaneously grips three specimens 105 (105a, 105b, 105c). The first finger 400 is positioned so as to be able to contact the specimen 105a, the second finger 401 is positioned so as to be able to contact the specimen 105c, and the specimen 105b is positioned between the specimens 105a and 105c.

[0070] The first finger 400 has three recesses 404 and a rotating part 602 at a position facing the second finger 401. The first finger 400 has one recess 404 on the tip side, and has the rotating part 602 on the base side of the recess 404. The rotating part 602 has two recesses 404 along the length direction of the first finger 400 at a position facing the second finger 401. That is, the first finger 400 has three recesses 404 along the length direction of the finger.

[0071] The rotating part 602 is a part of the first finger 400 and is rotatably connected to the first finger 400. The rotating part 602 has one end on the tip side of the first finger 400 and the other end on the base side of the first finger 400. The rotating part 602 is connected to the first finger 400 at one end. The rotating part 602 can rotate around the one end, which is the connection part, so that the other end approaches the first finger 400 or moves away from the first finger 400. That is, the rotating part 602 can rotate so that the two recesses 404 of the rotating part 602 face the plane on which the specimen 105 exists or face the second finger 401. When the gripping hand 100 is not performing a gripping operation, the rotating part 602 takes a posture (position in the rotation direction) such that the two recesses 404 face the plane on which the specimen 105 exists.

[0072] The second finger 401 has a slope 405 along the length of the finger at a position facing the first finger 400. The slope 405 has a shape that moves away from the first finger 400 as it moves from the tip of the second finger 401 to the base.

[0073] 6A, state (a) shows a state in which the gripping hand 100 is attempting to simultaneously grip three specimens 105a, 105b, and 105c on a plane, and the first finger 400 and the second finger 401 are gradually closing, with the first finger 400 contacting one specimen 105a and the second finger 401 contacting the other specimen 105c. A part of the specimen 105a enters the recess 404 located at the most distal end side of the first finger 400 among the three recesses 404. The two recesses 404 of the rotating part 602 are oriented toward the plane on which the specimens 105 are present.

[0074] 6A shows a state (b) in which the first finger 400 and the second finger 401 are further closed, and the specimen 105c moves toward the base of the second finger 401 along the slope 405 of the second finger 401. The specimen 105c moves toward the base of the second finger 401 by the gripping force of the gripping hand 100 and the slope 405 of the second finger 401. By contacting the second finger 401, the rotating part 602 rotates around the connection part with the first finger 400 from a direction in which the two recesses 404 face the plane on which the specimen 105 exists to a direction in which the two recesses 404 face the second finger 401.

[0075] 6A shows a state (c) in which the first finger 400 and the second finger 401 are further closed from the state (b), the specimen 105c moves further along the slope 405 of the second finger 401, and the second finger 401 comes into contact with another specimen 105b. The rotating part 602 is further rotated by the gripping force of the gripping hand 100 and the pushing force of the specimen 105c in a direction such that the two recesses 404 face the second finger 401. The specimen 105c moves toward the base of the second finger 401 before the specimen 105b, and the gripping hand 100 can stably grip the specimens 105c and 105b.

[0076] 6A shows a state (d) in which the first finger 400 and the second finger 401 are further closed from the state (c), the specimen 105c moves further along the slope 405 of the second finger 401, and the specimen 105b moves along the slope 405 of the second finger 401 toward the base of the second finger 401. The rotating part 602 rotates further, and the two recesses 404 face the second finger 401. The specimen 105c moves due to the gripping force of the gripping hand 100 and the pushing force of the specimen 105b.

[0077] 6A shows a state (e) in which the first finger 400 and the second finger 401 have finished closing, and the gripping operation of the gripping hand 100 has ended. When the first finger 400 and the second finger 401 further close from the state (d), the specimens 105c and 105b move further along the inclined surface 405 of the second finger 401 toward the base of the second finger 401. Then, a part of the specimen 105c enters the recess 404 on the other end side of the two recesses 404 of the rotating part 602, and a part of the specimen 105b enters the recess 404 on the one end side of the two recesses 404 of the rotating part 602. That is, a part of the specimen 105c enters the recess 404 on the base side of the three recesses 404 of the first finger 400. Of the three recesses 404 in the first finger 400, a part of the specimen 105b fits into the recess 404 located in the center of the finger in the longitudinal direction.

[0078] In this way, the gripping hand 100 can simultaneously grip three specimens 105 arranged along the length direction of the first finger 400 and the second finger 401. When the three specimens 105 are gripped, a part of each of them enters the recess 404. Therefore, the gripping hand 100 can stably grip the three specimens 105 simultaneously.

[0079] The first finger 400 may include an elastic member and be connected to the rotating part 602 by this elastic member. In the following, a configuration in which the rotating part 602 is connected to the first finger 400 by an elastic member will be described.

[0080] Fig. 6B is a diagram showing an example of the configuration of the gripping hand 100 in which the rotating part 602 is connected to the first finger 400 by an elastic member 603. The gripping hand 100 shown in Fig. 6B has a similar configuration to the gripping hand 100 shown in Fig. 6A, but differs in that it has an elastic member 603. Therefore, only the elastic member 603 will be described below.

[0081] The elastic member 603 connects the other end of the rotating part 602 and a portion on the root side of the first finger 400, and can be composed of, for example, a spring. The rotating part 602 receives a force from the elastic member 603 that controls the rotation of the rotating part 602 about one end (the portion connected to the first finger 400). The elastic member 603 contracts as the state changes from (a) to (e) in FIG. 6B.

[0082] The elastic member 603 prevents the rotating part 602 from rotating when the gripping hand 100 is not performing a gripping operation. In addition, the elastic member 603 controls the rotation of the rotating part 602, and the specimen 105c is more likely to move toward the base of the second finger 401 before the specimen 105b, so that the gripping hand 100 can stably grip the specimen 105. Furthermore, the elastic member 603 allows the gripping hand 100 to easily release the gripped specimen 105 when the fingers open.

[0083] In the above description, the first finger 400 has three recesses 404. That is, the first finger 400 has one recess 404 on the tip side, and the rotating part 602 has two recesses 404. The number of recesses 404 provided on the first finger 400 does not have to be three. The first finger 400 may have two or more recesses 404 on the tip side. The rotating part 602 may have one or three or more recesses 404. However, in the configuration of the gripping hand 100 provided with the rotating part 602 in this embodiment, in order to grip a plurality of specimens 105 more stably at the same time, it is preferable that the first finger 400 has one recess 404 on the tip side, and the rotating part 602 has two recesses 404.

[0084] In the sample sorting system according to this embodiment, the gripping hand 100 includes a rotating part 602 having a recess 404, so that a larger number of samples 105 can be stably gripped simultaneously. EXAMPLES

[0085] A sample sorting system according to a third embodiment of the present invention will be described. In the following, the sample sorting system according to this embodiment will be described, focusing mainly on the differences from the sample sorting system according to the first embodiment. In this embodiment, the gripping device 107 can simultaneously grip four samples 105 on a plane. In the following, an example will be described in which the object gripped by the gripping device 107 is a cylindrical sample 105.

[0086] Fig. 7 is a diagram showing an example of the configuration of the gripping hand 100 provided in the gripping device 107 in this embodiment. Fig. 7 shows two states (a) to (b) that represent the gripping operation of the gripping hand 100 in chronological order. The gripping operation of the gripping hand 100 progresses in the order of states (a) to (b).

[0087] The gripping hand 100 has a pair of fingers, a first finger 700, a second finger 701, and a third finger 702, to grip a plurality of cylindrical objects. The first finger 700 and the second finger 701 face each other. The second finger 701 and the third finger 702 face each other. The first finger 700 and the third finger 702 are located on the outside in the opening / closing direction, are movable relative to the second finger 701, and move in the opening / closing direction when the gripping hand 100 performs a gripping motion. The second finger 701 is located between the first finger 700 and the third finger 702 in the opening / closing direction, and does not move in the opening / closing direction even when the gripping hand 100 performs a gripping motion.

[0088] In this embodiment, the gripping hand 100 grips four specimens 105 (105a, 105b, 105c, and 105d). The first finger 700 is positioned so as to be able to contact the specimen 105a, the second finger 701 is positioned so as to be able to contact the specimens 105b and 105c, and the third finger 702 is positioned so as to be able to contact the specimen 105d.

[0089] Like the first finger 400 in the first embodiment, the first finger 700 and the third finger 702 have two recesses 404 in the longitudinal direction of the fingers at positions facing the second finger 701.

[0090] The second finger 701 has slopes 405 along the length direction of the finger at a position facing the first finger 700 and at a position facing the third finger 702. The slopes 405 have the same shape as the slopes 405 of the second finger 401 in the first embodiment. That is, the slope 405 facing the first finger 700 has a shape that moves away from the first finger 700 as it moves from the tip to the base of the second finger 701, and the slope 405 facing the third finger 702 has a shape that moves away from the third finger 702 as it moves from the tip to the base of the second finger 701.

[0091] 7A shows a state in which the gripping hand 100 is attempting to simultaneously grip four specimens 105a to 105d on a plane and has begun to close the first finger 700 and the third finger 702. Specimens 105a and 105b are present between the first finger 700 and the second finger 701, and specimens 105c and 105d are present between the second finger 701 and the third finger 702.

[0092] As the first finger 700 and the third finger 702 close, as described in Example 1 using Figure 4, the specimens 105b and 105c move along the slope 405 of the second finger 701 toward the base of the second finger 701.

[0093] 7B shows a state in which the first finger 700 and the third finger 702 have finished closing and the gripping operation of the gripping hand 100 has ended. A part of the specimen 105a enters the recess 404 on the tip side of the first finger 700 out of the two recesses 404 of the first finger 700. A part of the specimen 105b enters the recess 404 on the base side of the first finger 700 out of the two recesses 404 of the first finger 700. A part of the specimen 105c enters the recess 404 on the base side of the third finger 702 out of the two recesses 404 of the third finger 702. A part of the specimen 105d enters the recess 404 on the tip side of the third finger 702 out of the two recesses 404 of the third finger 702.

[0094] In this way, the gripping hand 100 can simultaneously grip four specimens 105, two at a time, aligned along the length direction of the first finger 700 and the third finger 702. When the four specimens 105 are gripped, a part of each of them enters the recess 404. Therefore, the gripping hand 100 can stably grip the four specimens 105 simultaneously.

[0095] In the sample sorting system of this embodiment, the gripping hand 100 has a set of three fingers (first finger 700, second finger 701, and third finger 702), and can stably grip more samples 105 simultaneously. EXAMPLES

[0096] A sample sorting system according to a fourth embodiment of the present invention will be described. In this embodiment, the gripping hand 100 of the gripping device 107 has three fingers (first finger 700, second finger 701, and third finger 702) as one set of fingers, as described in the third embodiment (FIG. 7). Each of the first finger 700 and third finger 702, which move in the opening and closing directions when the gripping hand 100 performs a gripping operation, has a rotating part 602, similar to the first finger 400 described in the second embodiment (FIG. 6).

[0097] That is, the first finger 700 and the third finger 702 each have one recess 404 on the tip side of the finger 700, 702, and have a rotating part 602 at a position facing the second finger 701 on the base side of the finger 700, 702 from the recess 404. The rotating part 602 has a plurality of recesses 404 along the length direction of the fingers 700, 702 that have the rotating part 602, at a position facing the second finger 701. One end of the rotating part 602 is connected to the fingers 700, 702 that have the rotating part 602, and is rotatable around the one end (the connection part with the fingers 700, 702).

[0098] Similarly to the first finger 400 described in the second embodiment (FIG. 6), each of the first finger 700 and the third finger 702 may include an elastic member 603 and be connected to the rotating part 602 by the elastic member 603. The elastic member 603 included in the first finger 700 connects the other end of the rotating part 602 included in the first finger 700 to a part on the base side of the first finger 700. The elastic member 603 included in the third finger 702 connects the other end of the rotating part 602 included in the third finger 702 to a part on the base side of the third finger 702.

[0099] In this embodiment, the gripping hand 100 can simultaneously and stably grip six or more specimens 105. That is, in the specimen sorting system according to this embodiment, the gripping hand 100 can stably grip more specimens 105 simultaneously. EXAMPLES

[0100] A sample sorting system according to a fifth embodiment of the present invention will be described. In the following, the sample sorting system according to this embodiment will be described, focusing mainly on the differences from the sample sorting system according to the first embodiment. In this embodiment, the gripping device 107 grips a plurality of spherical objects 805 as objects on a plane. In the following, an example in which the gripping device 107 grips two spherical objects 805 simultaneously will be described.

[0101] FIG. 8 is a schematic diagram of the fingers of the gripping hand 100 of the sample sorting system according to this embodiment, viewed from above a plane on which an object 805 is placed.

[0102] In the sample sorting system according to this embodiment, the gripping hand 100 has four fingers 800-803 constituting two pairs of fingers to grip two spherical objects 805 (805a, 805b). Of the four fingers 800-803, the first finger 800 and the second finger 802 form one pair of fingers, and the third finger 801 and the fourth finger 803 form the other pair of fingers. The first finger 800 and the third finger 801 have the same configuration as the first finger 400 provided in the gripping hand 100 in the first embodiment (FIG. 4), and have two recesses 404. The second finger 802 and the fourth finger 803 have the same configuration as the second finger 401 provided in the gripping hand 100 in the first embodiment, and have a slope 405.

[0103] That is, in this embodiment, the gripping hand 100 has two pairs of fingers, and opens and closes one pair of fingers, a first finger 800 and a second finger 802, and opens and closes another pair of fingers, a third finger 801 and a fourth finger 803, to simultaneously grip two spherical objects 805. In this embodiment, the first finger 800 and the third finger 801 are positioned so that they can contact the object 805a, and the second finger 802 and the fourth finger 803 are positioned so that they can contact the object 805b. In the sample sorting system according to this embodiment, the gripping hand 100 has four fingers 800 to 803, so that multiple spherical objects 805 can be stably gripped simultaneously.

[0104] When the grasping hand 100 performs a grasping operation, a part of the object 805a enters the recess 404 on the tip side of the first finger 800 and the third finger 801. Then, the object 805b moves along the slope 405 of the second finger 802 and the fourth finger 803 toward the base part of the second finger 802 and the fourth finger 803, and a part of the object 805b enters the recess 404 on the base side of the first finger 800 and the third finger 801.

[0105] In this way, the gripping hand 100 can simultaneously grip two objects 805 arranged along the length direction of the four fingers 800 to 803. When the two objects 805 are gripped, parts of them enter the recesses 404. Therefore, the gripping hand 100 can stably grip the two objects 805 simultaneously.

[0106] In the grasping hand 100, the positions of the first finger 800, the third finger 801, the second finger 802, and the fourth finger 803 can be determined arbitrarily. A preferable position of the four fingers 800 to 803 is, for example, a position where the first finger 800 and the third finger 801 are close to each other, the second finger 802 and the fourth finger 803 are close to each other, the first finger 800 faces the second finger 802, and the third finger 801 faces the fourth finger 803 (for example, FIG. 8). With the four fingers 800 to 803 in such positions, when the grasping hand 100 performs a grasping operation, the four fingers 800 to 803 can take positions close to a straight line connecting the centers of the two objects 805 to be grasped, and the pair of the first finger 800 and the second finger 802 and the pair of the third finger 801 and the fourth finger 803 can stably grasp the two spherical objects 805 simultaneously. The gripping hand 100 may include a first finger 800 and a third finger 801 as one finger group, and a second finger 802 and a fourth finger 803 as another finger group.

[0107] 9 is a schematic diagram showing a configuration in which a gripping hand 100 includes two finger groups 900, 901 in a sample sorting system according to this embodiment, viewed from above a plane on which an object 805 is placed. Finger group 900 includes first finger 800 and third finger 801 shown in FIG. 8. Finger group 901 includes second finger 802 and fourth finger 803 shown in FIG. 8.

[0108] In the sample sorting system according to this embodiment, even if the gripping hand 100 has two finger groups 900 and 901, it can stably grip two spherical objects 805 simultaneously. The present invention is not limited to the above-described embodiments, and various modifications are possible. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and the present invention is not necessarily limited to an embodiment having all of the configurations described. It is also possible to replace a part of the configuration of one embodiment with the configuration of another embodiment. It is also possible to add the configuration of another embodiment to the configuration of one embodiment. It is also possible to delete a part of the configuration of each embodiment, or to add or replace another configuration. [Explanation of symbols]

[0109] 100...grasping hand, 101...object information acquisition device, 102...manipulator, 103...robot controller, 104...control device, 105, 105a, 105b, 105c, 105d...sample, 106...sample rack, 107...grasping device, 200...processor, 201...main memory device, 202...secondary memory device, 203...network interface, 204...input / output interface, 400...first finger, 401...second finger, 404...recess, 405...inclined surface, 602...rotating portion, 603...elastic member, 700...first finger, 701...second finger, 702...third finger, 800...first finger, 801...third finger, 802...second finger, 803...fourth finger, 805, 805a, 805b...object, 900, 901...group of fingers.

Claims

1. A gripping device including a gripping hand; A control device that controls the gripping device; Equipped with The gripping hand has a plurality of fingers including a first finger and a second finger, and grips a plurality of objects with the plurality of fingers; The first finger has a plurality of recesses at a position facing the second finger along a longitudinal direction of the first finger, The second finger has a slope along a length direction of the second finger at a position facing the first finger. A sample sorting system comprising:

2. When the gripping hand grips the plurality of objects, a portion of the object enters the recess, and the gripping hand grips the plurality of objects by arranging the objects in a longitudinal direction of the first finger and the second finger. The sample sorting system according to claim 1 .

3. the plurality of objects are a plurality of samples placed in a sample rack, The interval between the recesses of the first finger is equal to the interval between the samples arranged adjacent to each other in the sample rack. The specimen sorting system according to claim 2 .

4. the first finger includes one recess on a tip end side of the first finger, and a rotating part at a position facing the second finger on a base end side of the first finger relative to the recess, the rotating portion includes a plurality of recesses at a position facing the second finger along a longitudinal direction of the first finger, The rotating part has one end portion on the tip end side, is connected to the first finger at the one end portion, and is rotatable around the one end portion. The sample sorting system according to claim 1 .

5. The first finger includes an elastic member. The rotating portion has a second end portion on the base portion side, The elastic member connects the other end of the rotating part and a portion of the first finger on the base side. The specimen sorting system according to claim 4.

6. The gripping hand includes the first finger, the second finger, and a third finger as the plurality of fingers, the second finger is located between the first finger and the third finger, The second finger includes the inclined surface along a length direction of the second finger at a position facing the first finger and a position facing the third finger, The third finger has a plurality of the recesses at a position facing the second finger along a longitudinal direction of the third finger. The sample sorting system according to claim 1 .

7. The first finger and the third finger each have one recess on a tip end side, and each have a rotating part at a position facing the second finger on a base end side of the recess, the rotating portion includes a plurality of recesses at a position facing the second finger along a length direction of the finger including the rotating portion, The rotating part has one end portion on the tip end side, is connected to the finger having the rotating part at the one end portion, and is rotatable around the one end portion. The specimen sorting system according to claim 6.

8. Each of the first finger and the third finger includes an elastic member. The rotating portion has a second end portion on the base portion side, the elastic member of the first finger connects the other end of the rotating part of the first finger and a portion of the first finger on the base side, The elastic member of the third finger connects the other end of the rotating part of the third finger and a portion of the third finger on the base side. The sample sorting system according to claim 7.

9. The recess has an arc shape or a shape composed of multiple planes. The sample sorting system according to claim 1 .

10. The inclined surface is a flat surface or a curved surface. The sample sorting system according to claim 1 .

11. the gripping hand includes the first finger, the second finger, a third finger, and a fourth finger as the plurality of fingers, The third finger includes a plurality of the recesses at a position facing the fourth finger along a longitudinal direction of the third finger, The fourth finger has the inclined surface along a longitudinal direction of the fourth finger at a position facing the third finger. The sample sorting system according to claim 1 .

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