Specimen tube clamping mechanism

Abstract

The utility model provides a specimen tube clamping mechanism which comprises a carrier plate used for being installed at the tail end of a mechanical arm, a first air cylinder is installed on the upper surface of the carrier plate, a movable seat is installed at the movable end of the first air cylinder and connected with the carrier plate in a sliding mode, and a plurality of positioning plates are installed on the upper surface of the movable seat at equal intervals. Two guide grooves are formed in the upper surfaces of the positioning plates, two clamping arms are arranged on the lower side of one positioning plate, column heads are fixedly connected to the ends, close to the positioning plates, of the clamping arms, the column heads are slidably installed in the guide grooves, the middle positions of the clamping arms are sleeved with shaft columns, and the shaft columns are fixedly connected with a carrier plate. The sides, away from the column head, of the opposite faces of the two clamping arms on one positioning plate are each provided with a semicircular groove used for storing the specimen tubes, and a collecting piece used for collecting the broken specimen tubes is installed on the lower surface of the carrying plate.

Description

Technical Field

[0001] The utility model relates to a specimen tube clamping mechanism, belonging to the technical field of specimen tube transfer. Background Art

[0002] For the simultaneous transfer of multiple specimen tubes, multiple groups of cooperating clamping arms are installed on a carrier plate. The distance between the two clamping arms in a group is reduced under the action of a cylinder, so as to clamp the specimen tube by using the two cooperating clamping arms. The carrier plate is installed at the end of a robotic arm, which is convenient for using the robotic arm to transfer the specimen tube between adjacent workstations. When the specimen tube breaks due to stress fatigue during the transfer of the carrier plate by the robotic arm, the broken specimen tube randomly falls into the working environment, and it takes a lot of time to clean it up. Therefore, it is necessary to design a specimen tube clamping mechanism that can centrally collect the broken specimen tubes during the transfer of the specimen tube. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a specimen tube clamping mechanism to solve the problems raised in the above background art. The utility model realizes the centralized collection of broken specimen tubes during the transfer of specimen tubes.

[0004] To achieve the above purpose, the utility model is realized by the following technical solutions: A specimen tube clamping mechanism includes a carrier plate for installing at the end of a robotic arm. A first cylinder is installed on the upper surface of the carrier plate. A moving seat is installed at the movable end of the first cylinder. The moving seat is slidably connected to the carrier plate. A plurality of positioning plates are equidistantly installed on the upper surface of the moving seat. Two guiding grooves are opened on the upper surface of the positioning plate. The included angle between the two guiding grooves on one positioning plate is an acute angle. Two clamping arms are arranged below one positioning plate. A column head is fixedly connected to the end of the clamping arm close to the positioning plate. The column head is slidably installed in the guiding groove. A shaft column is sleeved at the middle position of the clamping arm. The shaft column is fixedly connected to the carrier plate. Semi-circular grooves for storing specimen tubes are opened on the opposite sides of the two clamping arms on one positioning plate, away from the column head. A collecting member for collecting broken specimen tubes is installed on the lower surface of the carrier plate.

[0005] Furthermore, the collecting member includes a collecting box. A collecting box that is in sliding contact with the carrier plate is arranged on the lower surface of the carrier plate. The side of the collecting box facing the carrier plate is open. Two plug-in slots are opened at the upper position of the side of the collecting box facing away from the semi-circular groove of the clamping arm. Plug-in strips are inserted into the plug-in slots. The plug-in strips are fixedly connected to the carrier plate. A second cylinder is installed on the lower surface of the carrier plate. The movable end of the second cylinder is fixedly connected to the collecting box.

[0006] Further, a net plate is provided at the middle position inside the collection box. A water-permeable sponge block is laid on the upper side of the net plate. Two support bars are provided on the lower side of the net plate. The support bars are fixedly connected to the collection box. A branch pipe is installed at the lower position of one side surface of the collection box. The end of the branch pipe away from the collection box is threadedly connected with a sealing cover.

[0007] Further, a boss is fixedly connected to the surface of the collection box facing the second cylinder. The movable end of the second cylinder is fixedly connected to the boss through a plurality of screws.

[0008] Further, the cross-section of the insertion bar is in the shape of a dovetail tenon, and the cross-section of the insertion slot is in the shape of a dovetail tenon.

[0009] Further, two symmetrically arranged sliding seats are fixedly connected to the surface of the moving seat facing the carrier plate. A guide rail bar is inserted into the sliding seat. The guide rail bar is fixedly connected to the carrier plate.

[0010] Further, the movable end of the first cylinder is fixedly connected to a U-shaped plate. The U-shaped plate is clamped on the moving seat and fixedly connected to the moving seat.

[0011] Advantages of the present utility model:

[0012] 1. Control the first cylinder to extend. Further, the first cylinder drives the moving seat to move, and the moving seat drives the positioning plate to move. At this time, the column head slides in the guiding groove. Further, the distance between the two clamping arms on the lower side of one positioning plate increases, so that the specimen tube is located between the two clamping arms on the lower side of one positioning plate. Then control the first cylinder to contract, so that the distance between the two clamping arms on the lower side of one positioning plate decreases, realizing the clamping of the specimen tube.

[0013] 2. After the specimen tube is clamped, control the second cylinder to extend. The second cylinder drives the collection box to move, so that the collection box moves to directly below the specimen tube. When the specimen tube breaks due to stress fatigue, the broken specimen tube falls into the collection box, realizing the centralized collection of the broken specimen tubes, preventing the broken specimen tubes from dripping randomly into the environment, facilitating the cleaning and transfer of the broken specimen tubes. At the same time, the liquid in the specimen tube will be centrally collected in the collection box.

[0014] 3. The liquid flowing into the collection box first contacts the water-permeable sponge block. Under the action of the water-permeable sponge block, it is prevented that the liquid flowing into the collection box splashes. Description of the Drawings

[0015] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes and advantages of the present utility model will become more obvious:

[0016] Figure 1 It is a schematic structural diagram of a specimen tube clamping mechanism of the present utility model;

[0017] Figure 2 Schematic assembly diagram of the second cylinder, insertion strip and carrier plate in a specimen tube clamping mechanism of the present utility model;

[0018] Figure 3 Schematic assembly diagram of the water-permeable sponge block and collection box in a specimen tube clamping mechanism of the present utility model;

[0019] Figure 4 Schematic assembly diagram of the water-permeable sponge block, mesh plate and collection box in a specimen tube clamping mechanism of the present utility model;

[0020] In the figure: 1-carrier plate, 2-guide rail strip, 3-slide seat, 4-positioning plate, 5-collection box, 6-clamping arm, 7-semicircular groove, 8-axis post, 9-column head, 10-guiding groove, 11-moving seat, 12-U-shaped plate, 13-first cylinder, 14-second cylinder, 15-insertion strip, 16-insertion slot, 17-boss, 18-sealing cover, 19-branch pipe, 20-water-permeable sponge block, 21-mesh plate, 22-supporting strip. Specific embodiments

[0021] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please refer to Figure 1 , the present utility model provides a technical solution: a specimen tube clamping mechanism, including a carrier plate 1 for installing at the end of a robotic arm. A first cylinder 13 is installed on the upper surface of the carrier plate 1. The movable end of the first cylinder 13 is installed with a U-shaped plate 12. The U-shaped plate 12 is stuck on the moving seat 11 and fixedly connected to the moving seat 11. The U-shaped plate 12 serves to connect the movable end of the first cylinder 13 and the moving seat 11. Two symmetrically arranged slide seats 3 are fixedly connected to the side of the moving seat 11 facing the carrier plate 1. A guide rail strip 2 is inserted into the slide seat 3. Among them, the guide rail strip 2 is fixedly connected to the carrier plate 1. The guide rail strip 2 and the slide seat 3 cooperate with each other. The moving seat 11 is slidably connected to the carrier plate 1, and the moving track of the moving seat 11 is restricted.

[0023] Refer to Figure 1, a plurality of positioning plates 4 are equidistantly installed on the upper surface of the moving seat 11. Two guiding grooves 10 are formed on the upper surface of the positioning plate 4. The included angle between the two guiding grooves 10 on one positioning plate 4 is an acute angle. Two clamping arms 6 are arranged on the lower side of one positioning plate 4. A stud 9 is fixedly connected to the end of the clamping arm 6 close to the positioning plate 4. The stud 9 is slidably installed in the guiding groove 10. A shaft column 8 is sleeved at the middle position of the clamping arm 6. The shaft column 8 is fixedly connected to the carrier plate 1. The clamping arm 6 rotates around the shaft column 8 under the drive of the first cylinder 13. Semi-circular grooves 7 for storing specimen tubes are formed on the opposite sides of the two clamping arms 6 on one positioning plate 4 away from the stud 9. Control the first cylinder 13 to extend, and then the first cylinder 13 drives the moving seat 11 to move. The moving seat 11 drives the positioning plate 4 to move. At this time, the stud 9 slides in the guiding groove 10, and then the distance between the two clamping arms 6 on the lower side of one positioning plate 4 increases, so that the specimen tube is located between the two clamping arms 6 on the lower side of one positioning plate 4. Then control the first cylinder 13 to contract, so that the distance between the two clamping arms 6 on the lower side of one positioning plate 4 decreases, realizing the clamping of the specimen tube.

[0024] Refer to Figures 1-4 , a collection box 5 that is in sliding contact with the carrier plate 1 is provided on the lower surface of the carrier plate 1. The surface of the collection box 5 facing the carrier plate 1 is open. Two insertion grooves 16 with a dovetail-shaped cross-section are formed at the upper part of the surface of the collection box 5 facing away from the clamping arm 6 where the semi-circular groove 7 is formed. An insertion bar 15 with a dovetail-shaped cross-section is inserted in the insertion groove 16. The insertion bar 15 is fixedly connected to the carrier plate 1. The insertion bar 15 and the insertion groove 16 cooperate with each other to realize the stable installation of the collection box 5. A second cylinder 14 is installed on the lower surface of the carrier plate 1. A boss 17 is fixedly connected to the surface of the collection box 5 facing the second cylinder 14. The movable end of the second cylinder 14 is fixedly connected to the boss 17 through a plurality of screws. The boss 17 realizes the local increase in the thickness of the part of the collection box 5 where the installation screws are located. After the specimen tube is clamped, control the second cylinder 14 to extend. The second cylinder 14 drives the collection box 5 to move, so that the collection box 5 moves directly below the specimen tube. When the specimen tube breaks due to stress fatigue, the broken specimen tube falls into the collection box 5, realizing the centralized collection of the broken specimen tubes, preventing the broken specimen tubes from dripping randomly into the environment, facilitating the cleaning and transfer of the broken specimen tubes, and at the same time, the liquid in the specimen tube will be centrally collected in the collection box 5.

[0025] Refer to Figure 3 and Figure 4 , a net plate 21 is provided at the middle position inside the collection box 5. A water-permeable sponge block 20 is laid on the upper side of the net plate 21. Two supporting bars 22 are provided on the lower side of the net plate 21. The supporting bars 22 are fixedly connected to the collection box 5. A branch pipe 19 is installed at the lower part of one side surface of the collection box 5. The end of the branch pipe 19 away from the collection box 5 is threadedly connected with a sealing cover 18. The liquid flowing into the collection box 5 first contacts the water-permeable sponge block 20. Under the action of the water-permeable sponge block 20, the liquid flowing into the collection box 5 is prevented from splashing.

[0026] Although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A specimen tube clamping mechanism, comprising a carrier plate (1) for mounting at the end of a robotic arm, characterized in that: A first cylinder (13) is installed on the upper surface of the carrier plate (1), a movable seat (11) is installed on the movable end of the first cylinder (13), the movable seat (11) is slidably connected to the carrier plate (1), a plurality of positioning plates (4) are equidistantly installed on the upper surface of the positioning plate (11), two guide grooves (10) are provided on the upper surface of the positioning plate (4), the angle between the two guide grooves (10) on one of the positioning plates (4) is an acute angle, and two clamping arms (6) are provided on the lower side of one of the positioning plates (4). The clamp arm (6) is connected and fixed with a column head (9) at one end close to the positioning plate (4), and the column head (9) is slidably installed in the guide groove (10). The middle part of the clamp arm (6) is sleeved with a shaft column (8), and the shaft column (8) is connected and fixed to the carrier plate (1). The two clamp arms (6) on one of the positioning plates (4) are provided with a semicircular groove (7) for storing specimen tubes on the side away from the column head (9). The lower surface of the carrier plate (1) is provided with a collecting component for collecting broken specimen tubes.

2. A specimen tube clamping mechanism according to claim 1, characterized in that: The collecting member comprises a collecting box (5), the lower surface of the carrier plate (1) is provided with a collecting box (5) which is in sliding contact with the carrier plate (1), the side of the collecting box (5) facing the carrier plate (1) is open, the upper part of the side of the collecting box (5) which is away from the clamping arm (6) and has the semicircular groove (7) is provided with two plug-in grooves (16), the plug-in strips (15) are inserted in the plug-in grooves (16), the plug-in strip (15) is connected and fixed to the carrier plate (1), the lower surface of the carrier plate (1) is provided with a second cylinder (14), the movable end of the second cylinder (14) is connected and fixed to the collecting box (5).

3. A specimen tube clamping mechanism according to claim 2, characterized in that: A mesh plate (21) is provided in the middle of the collection box (5), a water-permeable sponge block (20) is laid on the upper side of the mesh plate (21), two support strips (22) are provided on the lower side of the mesh plate (21), and the support strips (22) are connected and fixed to the collection box (5). A branch pipe (19) is installed at the lower part of one side of the collection box (5), and a sealing cover (18) is threadedly connected to one end of the branch pipe (19) away from the collection box (5).

4. A specimen tube clamping mechanism according to claim 2, characterized in that: A boss (17) is connected and fixed to a side of the collection box (5) facing the second cylinder (14), and a movable end of the second cylinder (14) is connected and fixed to the boss (17) via a plurality of screws.

5. The specimen tube clamping mechanism according to claim 2, characterized in that: The cross section of the plug-in strip (15) is in the shape of a dovetail, and the cross section of the plug-in slot (16) is in the shape of a dovetail.

6. The specimen tube clamping mechanism according to claim 1, characterized in that: Two symmetrically arranged slide seats (3) are connected and fixed to one side of the movable seat (11) facing the carrier plate (1), a guide rail (2) is inserted in the slide seat (3), and the guide rail (2) is connected and fixed to the carrier plate (1).

7. The specimen tube clamping mechanism according to claim 1, characterized in that: A U-shaped plate (12) is connected and fixed to the movable end of the first cylinder (13); the U-shaped plate (12) is clamped on the movable seat (11) and is connected and fixed to the movable seat (11).

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