A hard top preventing needle

Abstract

The utility model relates to the field of biological sample storage discloses a kind of prevent hard top thimble, including the moving plate being arranged on the internal mounting frame of biological sample storage box, further include: adjusting unit, adjustable setting on the moving plate and moving with the grabbing unit on moving plate;Thimble unit, setting on the adjusted unit and located below grabbing unit;The thimble unit includes: ejection mechanism, setting on the adjusting unit is used to eject the cryopreservation tube inside storage box;Pressure sensor, setting on the ejection mechanism;Adjusting mechanism, between the ejection mechanism and the adjusting unit, the utility model effectively avoids the situation that the cryopreservation tube is damaged due to excessive ejection force occurs, so that the biological sample in cryopreservation tube is protected to the greatest extent, reduces the risk of biological sample loss.

Description

Technical Field

[0001] This utility model relates to the field of biological sample storage technology, specifically to an anti-hard-top pin. Background Technology

[0002] In the field of biological sample storage, biological samples are typically stored in specific storage boxes, which in turn contain cryovials containing valuable biological samples. In practice, it is often necessary to remove the cryovials from the storage boxes for subsequent research or processing.

[0003] Currently, most cryogenic ejectors in cryovial picking devices are integrated rigid structures. During actual picking operations, they must be precisely aligned with the bottom of the cryovial inside the cryovial box, and then pushed upwards to lift the cryovial for subsequent gripping by the grasping mechanism. However, in actual operation, factors such as cryovial box placement errors, equipment vibration, and deviations in the cryovial box's own manufacturing precision can easily lead to placement deviations. When the cryovial box deviates from the preset position, the ejector pin, during its pushing action, cannot accurately align with the bottom of the target cryovial and instead directly touches the top of the cryovial box structure.

[0004] Existing equipment has the following drawbacks: Because the ejector pin is a rigid structure, and the pushing action is typically powered continuously by a drive mechanism, the drive mechanism continues to apply pushing force even after the ejector pin contacts the top of the cryopreservation container, causing the ejector pin to continuously act on the container. As the pushing force accumulates, when it exceeds the container's load-bearing limit, the container is highly likely to tip over, causing the cryopreservation tubes inside to fall out. Since the biological samples stored in the cryopreservation tubes have extremely high requirements for the storage environment, falling out could not only damage the tubes but also expose the samples to unsuitable environments, causing contamination, inactivation, and other damage, resulting in significant economic losses and data bias risks for experimental research and production applications.

[0005] Therefore, this application proposes an anti-hard-top pin to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this invention is to provide an anti-hard-top ejector pin to solve the problem that when the pushing force exceeds the load-bearing limit of the cryopreservation box, the cryopreservation box may be overturned, causing the cryopreservation tubes inside the box to fall out.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an anti-hard-top pin, comprising a movable plate mounted on a mounting rack inside a biological sample storage box, and further comprising: An adjustment unit is adjustablely mounted on the movable plate and moves together with the gripping unit on the movable plate; The ejector unit is located on the adjustment unit and below the gripping unit. Driven by the adjustment unit, it moves upward to eject the cryopreservation tube inside the storage box that has been picked up by the gripping unit.

[0008] The ejector pin unit includes: An ejection mechanism, provided on the adjustment unit, is used to eject the cryopreservation tubes inside the storage box; A pressure sensor is installed on the ejection mechanism to detect the pressure applied by the ejection mechanism to the cryopreservation tube; An adjustment mechanism, disposed between the ejector mechanism and the adjustment unit, is used to drive the ejector mechanism to move downward and separate from the cryopreservation tube when the pressure applied by the ejector mechanism to the cryopreservation tube exceeds a set value. The adjustment unit includes: The first motor is mounted on a connecting frame on one side of the movable plate and is used to provide a pushing force for the ejection mechanism; The first gear is located at the power output end of the first motor; The first rack is slidably disposed on the connecting frame and meshes with the first gear; The lifting plate is fixed to the lower end of the first rack; An adjusting plate, fixed to the lower end of the lifting plate and connected to the ejector pin unit, is used to drive the ejector pin unit to move up and down.

[0009] The adjustment mechanism includes: The mounting base is adjustablely fixed to the adjustment plate; Mounting base, fixed to the upper end of the fixed base; The mounting rod is inserted and fixed to the upper end of the mounting base; The mounting box is adjustable and fixed to the mounting rod and is fixedly connected to the mounting rod by a locking device.

[0010] The adjustment mechanism further includes: The second motor is fixed on the mounting box; The rotating shaft is fixed to the power output end of the second motor and passes through the mounting box; The second gear is fixed at the position where the rotating shaft is located inside the mounting box; The second rack passes downward through the movable slot inside the mounting box and meshes with the second gear; The top of the second rack is connected to the ejection mechanism.

[0011] The ejection mechanism includes: A pin base is fixed to the top of the second rack, and the upper end of the second rack is provided with a top plate for mounting a pressure sensor. The top of the pressure sensor is connected to the pin base. The ejector pin body is fixed to the upper end of the ejector pin base and is used to eject the cryopreservation tubes inside the storage box.

[0012] The fixed base is connected to the adjusting plate by adjusting bolts, and the adjusting plate has an adjusting groove for the adjusting bolts to move.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model's anti-hard-top ejector device uses a pressure sensor on the ejector mechanism to detect the pressure applied to the cryopreservation tube in real time. When the pressure exceeds the set value, the adjusting mechanism will drive the ejector mechanism to move downward and separate from the cryopreservation tube, effectively avoiding damage to the cryopreservation tube due to excessive ejection force. This maximizes the protection of the biological samples inside the cryopreservation tube and reduces the risk of loss of biological samples. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure in one embodiment of the present invention; Figure 2 This is a schematic diagram of the connection between the adjustment unit and the ejector pin unit in one embodiment of the present invention; Figure 3 This is a schematic diagram of the connection between the ejector pin unit and the adjustment plate in one embodiment of the present invention; Figure 4 This is a schematic diagram of the ejector pin unit in one embodiment of the present invention; Figure 5 This is a cross-sectional structural schematic diagram of the ejector pin unit in one embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the exploded ejector unit in one embodiment of the present invention.

[0015] In the diagram: 1. Mounting frame; 2. Moving frame; 3. Y-axis traveling unit; 4. X-axis traveling unit; 5. Z-axis traveling unit; 6. Moving plate; 61. Connecting frame; 7. Adjusting unit; 71. First motor; 72. First gear; 73. First rack; 74. Lifting plate; 75. Adjusting plate; 7501. Adjusting groove; 8. Ejector unit; 81. Fixed seat; 811. Adjusting bolt; 82. Mounting seat; 83. Mounting rod; 84. Mounting box; 8401. Mounting groove; 8402. Moving groove; 841. Locking element; 85. Second motor; 86. Rotating shaft; 87. Second gear; 88. Second rack; 881. Top plate; 89. Ejector base; 891. Ejector body; 810. Pressure sensor; 9. Gripping unit. Detailed Implementation

[0016] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-6 This utility model provides a technical solution: an anti-hard-top ejector pin, including a movable plate 6 mounted on a mounting frame 1 inside a biological sample storage box, and further including: an adjustment unit 7, adjustablely mounted on the movable plate 6 and moving together with a gripping unit 9 on the movable plate 6; an ejector pin unit 8, mounted on the adjustment unit 7 and located below the gripping unit 9, which moves upward under the drive of the adjustment unit 7 to eject the cryopreservation tube inside the storage box picked up by the gripping unit 9; the ejector pin unit 8 includes: an ejection mechanism, mounted on the adjustment unit 7 for ejecting the cryopreservation tube inside the storage box; a pressure sensor 810, mounted on the ejection mechanism for detecting the pressure applied by the ejection mechanism to the cryopreservation tube; and an adjustment mechanism, mounted between the ejection mechanism and the adjustment unit 7, for driving the ejection mechanism to move downward and separate from the cryopreservation tube when the pressure applied by the ejection mechanism to the cryopreservation tube exceeds a set value.

[0018] It should be noted that during operation, a movable frame 2 is installed at the upper end of the mounting frame 1. The movable frame 2 is equipped with an X-axis traveling unit 4 for adjusting the position of the gripping unit 9 in the X-axis direction, a Y-axis traveling unit 3 for adjusting the position of the gripping unit 9 in the Y-axis direction, and a Z-axis traveling unit 5 for adjusting the position of the gripping unit 9 in the Z-axis direction. This device allows adjustment of the position of the gripping unit 9 inside the sample storage box, facilitating the gripping of the storage boxes within. After the gripping unit 9 grips the storage box, the adjustment unit 7 is activated, causing the ejector pin unit 8 to move upwards. Furthermore, when the ejector mechanism pushes the cryopreservation tubes inside the storage box, the pressure sensor 810 can monitor the ejector mechanism in real time. The pressure sensor 810 detects that the pressure applied to the cryopreservation tube by the ejector mechanism exceeds the set value. The pressure sensor 810 then transmits a signal to the PLC control element, which controls the adjustment mechanism to move downwards, thus separating the ejector mechanism from the cryopreservation tube. This anti-hard-top ejector device, by installing a pressure sensor 810 on the ejector mechanism, can detect the pressure applied to the cryopreservation tube in real time. When the pressure exceeds the set value, the adjustment mechanism drives the ejector mechanism to move downwards and separate from the cryopreservation tube, effectively preventing damage to the cryopreservation tube due to excessive ejection force. This maximizes the protection of the biological samples inside the cryopreservation tube and reduces the risk of biological sample loss.

[0019] In one embodiment, the adjustment unit 7 includes: a first motor 71, mounted on a connecting frame 61 on one side of the moving plate 6, for providing a pushing force to the ejector mechanism; a first gear 72, mounted on the power output end of the first motor 71; a first rack 73, slidably mounted on the connecting frame 61 and meshing with the first gear 72; a lifting plate 74, fixed to the lower end of the first rack 73; and an adjustment plate 75, fixed to the lower end of the lifting plate 74 and connected to the ejector pin unit 8, for driving the ejector pin unit 8 to move up and down.

[0020] This design is for reference. Figure 2 The first motor 71 is mounted on the connecting frame 61 on one side of the moving plate 6, serving as the power source for the entire adjustment unit 7. It provides a stable and continuous pushing force to the ejection mechanism. The first gear 72 is located at the power output end of the first motor 71 and meshes with the first rack 73 slidably mounted on the connecting frame 61. It can efficiently convert the rotational motion of the first motor 71 into the linear motion of the first rack 73, ensuring the accuracy and stability of the up-and-down movement of the lifting plate 74 and the adjustment plate 75. The adjustment plate 75 is connected to the ejector pin unit 8 and can drive the ejector pin unit 8 to move up and down, ensuring the smooth progress of the biological sample retrieval process.

[0021] In one embodiment, the adjustment mechanism includes: a fixed base 81, which is adjustablely fixed on the adjustment plate 75; a mounting base 82, which is fixed to the upper end of the fixed base 81; a mounting rod 83, which is inserted and fixed to the upper end of the mounting base 82; and a mounting box 84, which is adjustablely fixed on the mounting rod 83 and is fixedly connected to the mounting rod 83 by a locking member 841.

[0022] This design is for reference. Figure 4 The fixed base 81 is adjustablely fixed on the adjustment plate 75. The operator can adjust the position of the fixed base 81 on the adjustment plate 75 according to actual needs, so that the ejection mechanism can be aligned with the cryopreservation tube in the gripping unit 9. The mounting base 82 is fixed to the upper end of the fixed base 81, providing a stable foundation support for the entire adjustment mechanism. The mounting rod 83 is inserted and fixed on the mounting base 82. The mounting box 84 is adjustablely fixed on the mounting rod 83 and is fixedly connected to the mounting rod 83 through the locking part 841. This adjustable design allows the operator to accurately adjust the height position of the mounting box 84 on the mounting rod 83 according to specific parameters such as the specifications of the cryopreservation tube and the depth of the storage box. By adjusting the position of the mounting box 84, the relative distance between the ejection mechanism and the cryopreservation tube can be changed, thereby controlling the ejection stroke and force of the ejection mechanism, meeting the diverse operational needs in the field of biological sample storage.

[0023] In one embodiment, the adjustment mechanism further includes: a second motor 85 fixed on the mounting box 84; a rotating shaft 86 fixed to the power output end of the second motor 85 and passing through the mounting box 84; a second gear 87 fixed at the position where the rotating shaft 86 is located inside the mounting box 84; a second rack 88 passing downward through the moving groove 8402 inside the mounting box 84 and meshing with the second gear 87; and the top end of the second rack 88 being connected to the ejection mechanism.

[0024] This design is for reference. Figure 3-6 The second motor 85 is fixed on the mounting box 84 and serves as the power source for the ejection mechanism. The rotating shaft 86 is fixed to the power output end of the second motor 85 and passes through the mounting box 84. The second gear 87 is installed in the mounting groove 8401 in the mounting box 84. The second gear 87 is fixed at the position where the rotating shaft 86 is located inside the mounting box 84 and meshes with the second rack 88, which passes downward through the moving groove 8402 inside the mounting box 84. When the pressure sensor 810 detects that the pressure applied by the ejection mechanism to the cryopreservation tube exceeds the set value, the pressure sensor 810 transmits the signal to the PLC control element. The PLC control element controls the second motor 85 to rotate, and the rotating shaft 86 transmits power to the second gear 87, thereby driving the second rack 88 to move downward. This causes the ejection mechanism at the upper end of the second rack 88 to separate from the cryopreservation tube, preventing damage to the cryopreservation tube due to excessive ejection force. This effectively protects the safety of the biological sample and reduces the risk of sample loss.

[0025] In one embodiment, the ejection mechanism includes: an ejector base 89 fixed to the top end of a second rack 88, the upper end of the second rack 88 being provided with a top plate 881 for mounting a pressure sensor 810, the top end of the pressure sensor 810 being connected to the ejector base 89; and an ejector body 891 fixed to the upper end of the ejector base 89 for ejecting the cryopreservation tube inside the storage box.

[0026] This design is for reference. Figure 4 ,as well as Figure 5 The top plate 881 at the upper end of the second rack 88 is used to install the pressure sensor 810, and the top of the pressure sensor 810 is connected to the ejector pin base 89. This design allows the pressure sensor 810 to sense the reaction force that the ejector pin body 891 receives during the ejection of the cryopreservation tube, which is the pressure applied to the cryopreservation tube by the ejection mechanism. By monitoring the pressure data in real time, the system can react in time when the pressure exceeds the set value, so as to avoid damaging the cryopreservation tube due to excessive ejection force, thereby effectively protecting the safety of biological samples and reducing the risk of sample loss.

[0027] In one embodiment, the fixed base 81 is connected to the adjusting plate 75 by adjusting bolt 811, and the adjusting plate 75 is provided with an adjusting groove 7501 for the adjusting bolt 811 to move.

[0028] This design is for reference. Figure 3 ,as well as Figure 4 The adjustment groove 7501 on the adjustment plate 75 provides moving space for the adjustment bolt 811, allowing the fixed seat 81 to be flexibly adjusted in position within the adjustment groove 7501 via the adjustment bolt 811. In different biological sample storage scenarios, the specifications, layout of the storage box, and the distribution of cryopreservation tubes may vary. Using the adjustment groove 7501 and the adjustment bolt 811, staff can move the fixed seat 81 to a suitable position according to actual needs, thereby aligning the entire adjustment mechanism and ejection mechanism with the cryopreservation tubes, improving the adaptability of the device to different working environments and storage methods.

[0029] Furthermore, if the embodiments involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relation to the specification. The significance or implied number of the indicated technical features is not specified. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

Claims

1. A hard-top jacking pin, comprising a movable plate (6) mounted on a mounting frame (1) inside a biological sample storage box, characterized in that, Also includes: The adjustment unit (7) is adjustable and can be set on the movable plate (6) and move together with the gripping unit (9) on the movable plate (6); The ejector unit (8) is located on the adjustment unit (7) and below the gripping unit (9). Under the drive of the adjustment unit (7), it moves upward to eject the cryopreservation tube inside the storage box that the gripping unit (9) has picked up.

2. The anti-hard-top ejector pin according to claim 1, characterized in that: The ejector pin unit (8) includes: An ejection mechanism is provided on the adjustment unit (7) for ejecting the cryopreservation tubes inside the storage box; A pressure sensor (810) is provided on the ejection mechanism to detect the pressure applied by the ejection mechanism to the cryopreservation tube; An adjustment mechanism is provided between the ejector mechanism and the adjustment unit (7) for driving the ejector mechanism to move downward and separate from the cryopreservation tube when the pressure applied by the ejector mechanism to the cryopreservation tube exceeds a set value.

3. The anti-hard-top ejector pin according to claim 2, characterized in that: The adjustment unit (7) includes: The first motor (71) is mounted on the connecting frame (61) on one side of the moving plate (6) and is used to provide a pushing force for the ejection mechanism; The first gear (72) is located at the power output end of the first motor (71); The first rack (73) is slidably disposed on the connecting frame (61) and meshes with the first gear (72); The lifting plate (74) is fixed to the lower end of the first rack (73); An adjusting plate (75) is fixed at the lower end of the lifting plate (74) and connected to the ejector pin unit (8) to drive the ejector pin unit (8) to move up and down.

4. The anti-hard-top ejector pin according to claim 3, characterized in that: The adjustment mechanism includes: The fixed base (81) is adjustablely fixed on the adjusting plate (75); Mounting base (82) is fixed to the upper end of the fixing base (81); The mounting rod (83) is inserted and fixed to the upper end of the mounting base (82); The mounting box (84) is adjustable and fixed to the mounting rod (83) and is fixedly connected to the mounting rod (83) by a locking member (841).

5. The anti-hard-top ejector pin according to claim 4, characterized in that: The adjustment mechanism further includes: The second motor (85) is fixed on the mounting box (84); The rotating shaft (86) is fixed to the power output end of the second motor (85) and passes through the mounting box (84); The second gear (87) is fixed at the position inside the mounting box (84) of the rotating shaft (86); The second rack (88) passes downward through the movable groove (8402) inside the mounting box (84) and meshes with the second gear (87); The top end of the second rack (88) is connected to the ejection mechanism.

6. The anti-hard-top ejector pin according to claim 5, characterized in that: The ejection mechanism includes: The ejector pin base (89) is fixed to the top of the second rack (88). The upper end of the second rack (88) is provided with a top plate (881) for mounting a pressure sensor (810). The top of the pressure sensor (810) is connected to the ejector pin base (89). The ejector body (891) is fixed at the upper end of the ejector base (89) and is used to eject the cryopreservation tube inside the storage box.

7. The anti-hard-top ejector pin according to claim 4, characterized in that: The fixed base (81) is connected to the adjusting plate (75) by adjusting bolt (811), and the adjusting plate (75) is provided with an adjusting groove (7501) for the adjusting bolt (811) to move.

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