Clamping jaw structure of blood collection tube labeling machine

Abstract

The utility model relates to the technical field of blood collection tube clamping, and discloses a clamping jaw structure of a blood collection tube labeling machine, the clamping jaw structure comprises a power mechanism, a clamping jaw mechanism and a linear track, the power mechanism comprises a screw rod, and the screw rod is provided with a first threaded section and a second threaded section which are opposite in rotation direction; the clamping jaw mechanism comprises a first clamping jaw and a second clamping jaw which can slide along the linear rail in a reciprocating mode, the first clamping jaw is in threaded fit with the first threaded section, the second clamping jaw is in threaded fit with the second threaded section, the length direction of the lead screw is the same as that of the linear rail, and the lead screw drives the first clamping jaw and the second clamping jaw to be close to each other or away from each other. The clockwise thread and the anticlockwise thread are arranged on the same lead screw at the same time and matched with the two corresponding clamping jaws respectively, so that the lead screw rotates in the same direction to drive the two clamping jaws to grab or loosen the blood collection tubes, and the blood collection tube clamping device can be matched with the blood collection tubes of various specifications.

Description

Technical Field

[0001] This utility model relates to the field of blood collection tube clamping technology, and in particular to a clamping claw structure for a blood collection tube labeling machine. Background Technology

[0002] Hospitals frequently use blood collection tubes for blood tests. To facilitate matching patient information, labels with barcodes are usually affixed to the outer wall of the tubes. Blood collection tubes are categorized into several types based on whether they contain additives and the types of additives they contain, distinguished by the color of the cap. When conducting blood tests for patients in hospitals, each patient often needs to undergo multiple tests, each requiring different types of blood collection tubes. Furthermore, labels with patient information must be affixed to the blood collection tubes before blood is drawn. This process is extremely tedious and labor-intensive; manual operation is time-consuming and labor-intensive, and accidents such as selecting the wrong type of blood collection tube or missing or incorrectly affixing patient labels can occur. Therefore, hospitals have begun using blood collection tube labeling machines to replace manual labeling.

[0003] Blood collection tube labeling machines are already a mature medical device. In actual operation, the blood collection tubes need to be moved from the test tube rack to the printer. During this process, the blood collection tubes need to be gripped by the grippers inside the labeling machine. Existing gripper structures generally use magnetic attraction to grip the blood collection tubes. Since the specifications of the magnets are fixed, the same gripper cannot accommodate blood collection tubes of different sizes, which can easily lead to problems such as failure to grip or insufficient gripping force causing the tube to fall off. Utility Model Content

[0004] To address the problems existing in the prior art, namely that the existing gripper structure cannot adapt to blood collection tubes of different sizes and specifications, the purpose of this utility model is to provide a gripper structure for a blood collection tube labeling machine. By simultaneously setting clockwise and counterclockwise threads on the same lead screw and matching them with two corresponding grippers, the two grippers can be driven to grasp or release the blood collection tube when the lead screw rotates in the same direction, thus adapting to blood collection tubes of various specifications.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A gripper structure for a blood collection tube labeling machine includes a power mechanism, a gripper mechanism, and a linear track. The power mechanism includes a lead screw with a first threaded section and a second threaded section having opposite directions of rotation. The gripper mechanism includes a first gripper and a second gripper that can reciprocate along the linear track. The first gripper is threadedly engaged with the first threaded section, and the second gripper is threadedly engaged with the second threaded section. The lead screw and the linear track have the same length direction, and the lead screw drives the first gripper and the second gripper to move closer to or further away from each other.

[0007] The present invention is further configured such that: the power mechanism also includes a servo motor, which is used to drive the lead screw to rotate.

[0008] The present invention is further configured such that: both the first gripper and the second gripper are provided with a clamping part, and the clamping parts on the first gripper and the second gripper are symmetrically arranged and cooperate with each other to clamp or release the blood collection tube.

[0009] The present invention is further configured such that: the gripper mechanism also includes a pad, the pad is located on the side of the gripping part facing the blood collection tube, and the pad is in direct contact with the blood collection tube.

[0010] The present invention is further configured such that the pad has an anti-slip pattern.

[0011] The present invention is further configured such that the clamping part is an arc-shaped sheet structure.

[0012] The present invention is further configured such that: both the first gripper and the second gripper are provided with gripper bases, the gripper bases are located on a linear track and can slide back and forth along the linear track.

[0013] The present invention is further configured such that: both the first gripper and the second gripper are provided with threaded plates, the threaded plate on the first gripper is threadedly engaged with the first threaded segment, and the threaded plate on the second gripper is threadedly engaged with the second threaded segment.

[0014] The present invention is further configured to include a controller and a limit sensor, wherein the limit sensor is used to detect the position of the first gripper and the second gripper on the lead screw, the limit sensor is electrically connected to the controller, and the controller receives the signal from the limit sensor and controls the servo motor.

[0015] The present invention is further configured to include a distance sensor, which is used to detect blood collection tubes. The distance sensor is electrically connected to a controller, and the controller receives the signal from the distance sensor and controls the servo motor.

[0016] In summary, the beneficial effects achieved by this utility model are as follows:

[0017] (1) Two clockwise and counterclockwise threaded sections are simultaneously provided on the lead screw, and the two threaded sections with opposite directions are respectively threaded with the two grippers. The two grippers are confined to a linear track. When the servo motor drives the lead screw to rotate, the two grippers can move closer or further apart along the linear track, thereby clamping or releasing the blood collection tube. Since the two grippers clamp the blood collection tube by moving closer together along the linear track, it can be adapted to blood collection tubes of various specifications;

[0018] (2) A servo motor is used as the power source, and two limit sensors are set to detect the position of the first and second grippers on the screw. A distance sensor is set to detect whether there are blood collection tubes. The servo motor, limit sensors and distance sensors are all electrically connected to the controller. The controller controls the forward and reverse rotation of the servo motor according to the sensor signals, which can automatically grip the blood collection tubes and prevent each gripper from leaving the straight track.

[0019] (3) The clamping parts on the first and second clamps are arc-shaped sheet structures that fit the blood collection tube. The clamping parts are provided with anti-slip patterned pads on the side facing the blood collection tube. When clamping the blood collection tube, the pressure can be increased and the friction can be increased, which can effectively prevent the tube from falling off due to insecure clamping. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the specification will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the gripper structure of the blood collection tube labeling machine of this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the gripper structure of the blood collection tube labeling machine of this utility model. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the gripper mechanism in this utility model.

[0024] In the diagram: 1. Blood collection tube; 2. Power mechanism; 21. Servo motor; 22. Coupling; 23. Lead screw; 231. First threaded section; 232. Second threaded section; 24. Bearing; 3. Mounting base; 31. Motor bracket; 32. Limit bracket; 33. Distance bracket; 4. Linear track; 5. Gripper mechanism; 51. First gripper; 52. Second gripper; 53. Gripper base; 54. Threaded plate; 55. Clamping part; 56. Pad; 6. Limit sensor; 7. Distance sensor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom", etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] As attached Figure 1-3 As shown, a gripper structure for a blood collection tube labeling machine includes a power mechanism 2, a mounting base 3, a linear track 4, and a gripper mechanism 5 for holding the blood collection tube 1.

[0028] The existing blood collection tubes 1 are generally cylindrical in shape, and the blood collection tube labeling machine is used to affix label information to the outer wall of the blood collection tube 1.

[0029] The power mechanism 2 includes a servo motor 21, a coupling 22, a lead screw 23, and a bearing 24, and the mounting base 3 includes a motor bracket 31.

[0030] The servo motor 21 provides power to the gripper mechanism 5. The servo motor 21 is a commonly used motor in the prior art, which has the characteristics of adjustable direction and torque, and precise control of speed and position.

[0031] The mounting base 3 is a horizontally arranged flat plate structure that provides support and a mounting platform for the overall structure. Two plate-shaped motor brackets 31 are arranged perpendicular to the mounting base 3, and the two motor brackets 31 are located at opposite ends of the mounting base 3.

[0032] The output shaft of the servo motor 21 is perpendicular to the plane of the two motor brackets 31, and the servo motor 21 is mounted and fixed on one of the motor brackets 31.

[0033] The axis of the lead screw 23 coincides with the axis of the output shaft of the servo motor 21, and the lead screw 23 is located between the two motor supports 31. The lead screw 23 is connected to the output shaft of the servo motor 21 through a coupling 22, and a bearing 24 is provided between the end of the lead screw 23 away from the servo motor 21 and the motor support 31, so that the lead screw 23 can rotate smoothly.

[0034] The lead screw 23 is provided with a first threaded section 231 and a second threaded section 232 with opposite thread directions. For example, the first threaded section 231 is located on the side closer to the coupling 22, and the thread direction of the first threaded section 231 is clockwise; the second threaded section 232 is located on the side closer to the bearing 24, and the thread direction of the second threaded section 232 is counterclockwise.

[0035] The linear track 4 is fixed on the mounting base 3. The linear track 4 has a long strip structure, and the length direction of the linear track 4 is the same as the length direction of the lead screw 23.

[0036] The gripper mechanism 5 includes a first gripper 51, a second gripper 52, a gripper base 53, and a threaded plate 54. The first gripper 51 and the second gripper 52 can cooperate with each other to grip or release the blood collection tube 1.

[0037] A gripper base 53 is provided at the bottom of the first gripper 51 and the second gripper 52. Both gripper bases 53 are adapted to the linear track 4, thereby confining the first gripper 51 and the second gripper 52 to the linear track and allowing them to slide back and forth only along the length of the linear track 4.

[0038] Each of the first gripper 51 and the second gripper 52 is provided with a threaded plate 54. Both threaded plates 54 are threadedly engaged with the lead screw 23. Specifically, the threaded plate 54 on the first gripper 51 is threadedly engaged with the first threaded section 231 on the lead screw 23, and the threaded plate 54 on the second gripper 52 is threadedly engaged with the second threaded section 232 on the lead screw 23. Thus, when the servo motor 21 drives the lead screw 23 to rotate, the first gripper 51 and the second gripper 52 will move simultaneously along the linear track 4. However, since the threads of the first threaded section 231 and the second threaded section 232 have opposite directions of rotation, under the drive of the lead screw 23, the first gripper 51 and the second gripper 52 will move closer to or further away from each other along the length of the lead screw 23.

[0039] The gripper mechanism 5 also includes a gripping part 55 and a pad 56.

[0040] Each of the first gripper 51 and the second gripper 52 is provided with a clamping part 55. In order to adapt to the cylindrical shape of the blood collection tube 1, the clamping part 55 is designed as an arc-shaped plate structure. The clamping parts 55 on the first gripper 51 and the second gripper 52 are symmetrically arranged and cooperate with each other to clamp or release the blood collection tube 1.

[0041] The pad 56 is located on the side of the clamping part 55 facing the blood collection tube 1, and the pad 56 is in direct contact with the blood collection tube 1. The pad 56 can reduce the contact area between the clamping part 55 and the blood collection tube 1, thereby increasing the pressure of the clamping part 55 on the blood collection tube 1.

[0042] To further increase the friction between the pad 56 and the blood collection tube 1, the side of the pad 56 that contacts the blood collection tube 1 is also provided with anti-slip patterns, which can effectively prevent the tube from falling off due to the two clamping parts 55 not being firmly clamped.

[0043] The gripper structure of the blood collection tube labeling machine of this utility model also includes a controller, a limit sensor 6, and a distance sensor 7. The mounting base 3 also includes a limit bracket 32 ​​and a distance bracket 33.

[0044] A commonly used industrial controller, such as a PLC, can be used as the controller. Limit sensors 6 and distance sensors 7 are both electrically connected to the controller. The controller receives signals from limit sensors 6 and distance sensors 7 and controls the servo motor 21 to start / stop, change direction, and adjust speed based on the received signals and the controller's built-in control logic algorithm. It should be noted that the controller and control method used in this invention are common in the prior art, and this invention does not involve any improvement to its control method or logic algorithm.

[0045] There are two limit sensors 6, respectively located at both ends of the lead screw 23 along its length. Each limit sensor 6 is mounted and fixed to the mounting base 3 via a limit bracket 32. The two limit sensors 6 are used to detect the positions of the first gripper 51 and the second gripper 52 on the lead screw 23. When the first gripper 51 and the second gripper 52 approach the end position of the lead screw 23 during sliding, the limit sensor 6 is triggered, and the servo motor 21 immediately stops or reverses, preventing the first gripper 51 and the second gripper 52 from deviating from the predetermined trajectory or interfering with other components.

[0046] Distance sensor 7 is mounted and fixed to mounting base 3 via distance bracket 33, and is located between first gripper 51 and second gripper 52. Distance sensor 7 is used to detect whether a blood collection tube 1 is present at the current position. If a blood collection tube 1 is present at the current position, servo motor 21 is activated, and first gripper 51 and second gripper 52 move to the current position and approach each other to grasp the blood collection tube 1. If no blood collection tube 1 is present at the current position, first gripper 51 and second gripper 52 will move to other positions where a blood collection tube 1 is present to grasp it. The placement of distance sensor 7 ensures the effectiveness of each gripper operation; that is, only after detecting a blood collection tube 1 at the current position will first gripper 51 and second gripper 52 move to the target position to grasp the blood collection tube 1.

[0047] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if such modifications and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include such modifications and modifications.

Claims

1. A gripper structure for a blood collection tube labeling machine, characterized in that, The system includes a power mechanism (2), a gripper mechanism (5), and a linear track (4). The power mechanism (2) includes a lead screw (23), which has a first threaded section (231) and a second threaded section (232) with opposite directions of rotation. The gripper mechanism (5) includes a first gripper (51) and a second gripper (52) that can slide back and forth along the linear track (4). The first gripper (51) is threadedly engaged with the first threaded section (231), and the second gripper (52) is threadedly engaged with the second threaded section (232). The lead screw (23) and the linear track (4) have the same length direction. The lead screw (23) drives the first gripper (51) and the second gripper (52) to move closer to or further away from each other.

2. The gripper structure of the blood collection tube labeling machine according to claim 1, characterized in that, The power mechanism (2) also includes a servo motor (21), which is used to drive the lead screw (23) to rotate.

3. The gripper structure of the blood collection tube labeling machine according to claim 1, characterized in that, The first gripper (51) and the second gripper (52) are each provided with a gripping part (55). The gripping parts (55) on the first gripper (51) and the second gripper (52) are symmetrically arranged and cooperate with each other to grip or release the blood collection tube (1).

4. The gripper structure of the blood collection tube labeling machine according to claim 3, characterized in that, The gripper mechanism (5) also includes a pad (56), which is located on the side of the gripping part (55) facing the blood collection tube (1) and is in direct contact with the blood collection tube (1).

5. The gripper structure of the blood collection tube labeling machine according to claim 4, characterized in that, The pad (56) is provided with anti-slip patterns.

6. The gripper structure of the blood collection tube labeling machine according to claim 3, characterized in that, The clamping part (55) is an arc-shaped sheet structure.

7. The gripper structure of the blood collection tube labeling machine according to claim 1, characterized in that, The first gripper (51) and the second gripper (52) are each provided with a gripper base (53), which is located on the linear track (4) and can slide back and forth along the linear track (4).

8. The gripper structure of the blood collection tube labeling machine according to claim 1, characterized in that, Both the first jaw (51) and the second jaw (52) are provided with threaded plates (54). The threaded plate (54) on the first jaw (51) is threadedly engaged with the first threaded section (231), and the threaded plate (54) on the second jaw (52) is threadedly engaged with the second threaded section (232).

9. The gripper structure of the blood collection tube labeling machine according to claim 1, characterized in that, It also includes a controller and a limit sensor (6), the limit sensor (6) is used to detect the position of the first gripper (51) and the second gripper (52) on the lead screw (23), the limit sensor (6) is electrically connected to the controller, the controller receives the signal from the limit sensor (6) and controls the servo motor (21).

10. The gripper structure of the blood collection tube labeling machine according to claim 9, characterized in that, It also includes a distance sensor (7) for detecting blood collection tubes (1), the distance sensor (7) is electrically connected to the controller, the controller receives the signal from the distance sensor (7) and controls the servo motor (21).

Images