An auto-locking and dismounting syringe pump device suitable for automated synthesis

Abstract

The utility model discloses an automatic locking and dismounting's injection pump device suitable for automatic synthesis, including device body and self -adaptation needle cylinder locking subassembly, self -adaptation needle cylinder locking subassembly is used for adapting and locking the needle cylinder of different specifications, be equipped with the drive mechanism for providing power for self -adaptation needle cylinder locking subassembly in device body, self -adaptation needle cylinder locking subassembly includes the piston rod locking mechanism and needle cylinder follow -up locking mechanism that mutually cooperate linkage is used for clamping and drives the piston rod of needle cylinder and carries out the liquid taking / liquid discharge operation, through setting up self -adaptation spring formula needle cylinder locking subassembly, trigger formula linkage piston rod clamping subassembly and modular integrated base to make needle cylinder's locking, drive and separate whole process realizes automation, need not manual intervention, and then reach the operation efficiency of promotion, guarantee liquid transmission precision, strengthen the adaptability and integration of equipment in a variety of automatic platform, improve the security and reliability of system simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment technology, and more specifically, to an injection pump device for automatic locking and disassembly suitable for automated synthesis. Background Technology

[0002] In the field of automated synthesis technology, such as the synthesis of pharmaceutical intermediates, high-throughput screening of materials, and fine chemical reactions, the syringe pump, as the core liquid transfer unit, directly affects the efficiency and accuracy of the entire system. An ideal automated synthesis system requires the syringe pump to achieve high-frequency reagent switching, long-term unattended operation, micro-level precise liquid control, and compact integration within a space-constrained workstation. However, existing syringe pump devices have significant shortcomings in meeting these comprehensive requirements.

[0003] Currently, widely used syringe pump technology heavily relies on manual operation in two key aspects. First, the installation, locking, and release of syringes typically require manual knobs or mechanical latches. This not only disrupts the continuous workflow of automated synthesis, leading to inefficiency, but also inevitably introduces operational errors due to human intervention, affecting the reproducibility and success rate of synthetic reactions, especially micro-scale reactions. Second, traditional syringe pumps are mostly designed for fixed syringe sizes, lacking the ability to automatically adapt to syringes of different volumes ranging from 1 mL to 20 mL. When the reaction process requires changing reagents and syringes, operators must manually adjust and calibrate, a cumbersome process that makes it difficult to ensure consistent positioning. Furthermore, traditional devices are generally bulky and cumbersome, making effective modular integration with increasingly popular miniaturized, desktop automated synthesis platforms or high-throughput multi-channel sample stages difficult, significantly limiting their application in space-constrained advanced laboratory settings.

[0004] Therefore, there is a need for a new type of injection pump device that can completely eliminate manual intervention, achieve automatic locking, precise driving and rapid disassembly of the syringe, and has excellent adaptability and compact integration, so as to overcome the technical bottlenecks of existing technologies in terms of automation continuity, operational accuracy and system compatibility. Utility Model Content

[0005] In view of the above-mentioned technical problems in related technologies, this utility model proposes an automatic locking and disassembly injection pump device suitable for automated synthesis, which can overcome the above-mentioned shortcomings of the prior art.

[0006] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows: An injection pump device with automatic locking and disassembly suitable for automated synthesis; The automated locking and disassembly injection pump device suitable for automated synthesis includes a device body and an adaptive syringe locking assembly disposed within the device body. The adaptive syringe locking assembly is used to adapt to and lock syringes of different sizes. A drive mechanism for providing power to the adaptive syringe locking assembly is also provided within the device body and above the adaptive syringe locking assembly. The adaptive syringe locking assembly includes a piston rod locking mechanism and a syringe follow-up locking mechanism that cooperate and work together to clamp and drive the piston rod of the syringe to perform liquid dispensing / draining operations.

[0007] Furthermore, the piston rod locking mechanism includes a power plate, an upper piston rod pressure plate, a lower piston rod pressure plate, and a clamping spring assembly, wherein the power plate is connected to the drive mechanism.

[0008] Furthermore, the syringe follow-up locking mechanism includes a syringe lower pressure plate, a lower end cover, and a locking spring assembly disposed on the fixed column assembly. The syringe lower pressure plate is linked with the power plate, and the lower end cover is fixed to the device body.

[0009] Furthermore, both the piston rod lower pressure plate and the syringe lower pressure plate have arc-shaped contact surfaces on their inner sides, and replaceable silicone pads are provided on the arc-shaped contact surfaces; the replaceable silicone pads are 2-5mm thick, and the surface of the replaceable silicone pads has longitudinal anti-slip textures with a depth of 0.3mm and a spacing of 1.5mm. The longitudinal anti-slip textures are used to fill the tiny unevenness of the syringe outer wall through elastic deformation, so that the locking and positioning error is controlled within ±0.1mm.

[0010] Furthermore, the clamping spring assembly adopts a dual-spring parallel structure, including a high-stiffness main spring and a low-stiffness auxiliary spring arranged in parallel; the stiffness coefficient of the main spring is 1.2N / mm, and the stiffness coefficient of the auxiliary spring is 0.5N / mm, which is used to automatically compensate for size differences through deformation when the syringe diameter changes, ensuring that the locking force fluctuation range does not exceed ±0.2N.

[0011] Furthermore, the drive mechanism includes a stepper motor and a ball screw, with the slider of the ball screw connected to the power plate; the stepper motor is equipped with an encoder for detecting the piston rod stroke position.

[0012] Furthermore, the device body is provided with a separation mechanism for gripping and driving the syringe piston rod and automatically separating after the operation is completed. The separation mechanism includes a stop bar fixed to the device body.

[0013] Furthermore, the side of the device body is provided with a magnetic quick-change module for quick docking with an external automation platform; the magnetic quick-change module has a built-in positioning pin.

[0014] Furthermore, the drive mechanism is configured to enable the piston rod locking mechanism and the syringe follow-up locking mechanism to share the power provided by the power plate and achieve a common track design for synchronous operation.

[0015] Furthermore, the overall dimensions of the injection pump device are 150mm*80mm*120mm, which can be directly embedded into the standard mounting position of an automated synthesis workstation.

[0016] The beneficial effects of this invention are as follows: By setting an adaptive spring-type syringe locking assembly, automatic and reliable locking and rapid release of syringes of different specifications are achieved, effectively avoiding errors and interruptions caused by manual operation; combined with a trigger-type linkage piston rod clamping assembly, high-precision driving of the piston rod and automatic, non-destructive separation after operation are achieved, ensuring the accuracy and smoothness of the liquid transfer process; furthermore, through a modular integrated base and magnetic quick-change design, the device can be flexibly and stably integrated into various automation platforms. This achieves full automation of the entire injection pump device in the automated synthesis process, from syringe loading, locking, liquid dispensing, and disassembly, thereby significantly improving operational efficiency, significantly enhancing liquid transfer accuracy and experimental repeatability, strengthening the adaptability and integration convenience of the equipment in different application scenarios, and reducing the potential safety risks of chemical reagents to operators. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of an automatic locking and disassembling injection pump device suitable for automated synthesis, according to an embodiment of the present invention. Figure 2 This is an internal view of the overall structure of an automatic locking and disassembly injection pump device suitable for automated synthesis, according to an embodiment of the present utility model. Figure 3 This is a partial schematic diagram of the syringe lower pressure plate in the separated state of an injection pump device suitable for automated synthesis, according to an embodiment of the present utility model; Figure 4 This is a partial schematic diagram of the locked state of the syringe pressure plate of an automatic locking and disassembly injection pump device suitable for automated synthesis according to an embodiment of the present utility model; Figure 5This is a partial schematic diagram of an injection pump device for automatic locking and disassembly in automated synthesis, according to an embodiment of the present invention, in which both the piston rod pressure plate and the syringe pressure plate are in a locked state. Figure 6 This is a partial schematic diagram of the piston rod lower pressure plate separation and syringe lower pressure plate locking state of an injection pump device suitable for automated synthesis according to an embodiment of the present utility model; Figure 7 This is a partial schematic diagram of an injection pump device for automated synthesis, which is suitable for automated synthesis and has both the piston rod lower pressure plate and the syringe lower pressure plate in a separated state, according to an embodiment of the present utility model. Figure 8 This is a partial schematic diagram of the piston rod locking mechanism of an injection pump device suitable for automated synthesis and automatic locking and disassembly according to an embodiment of the present utility model, showing the locking state. Figure 9 This is a partial schematic diagram of the piston rod locking mechanism in the separated state of an injection pump device suitable for automated synthesis, according to an embodiment of the present utility model. Figure 10 This is a partial schematic diagram of the locking state of a syringe follow-up locking mechanism of an injection pump device suitable for automated synthesis and disassembly according to an embodiment of the present utility model; Figure 11 This is a partial schematic diagram of the syringe follow-up locking mechanism in the separated state of an injection pump device suitable for automated synthesis, according to an embodiment of the present utility model; Figure 12 This is a structural schematic diagram of a replaceable silicone gasket for an automatic locking and disassembly injection pump device suitable for automated synthesis, according to an embodiment of the present invention. In the diagram: 1. Device body; 2. Adaptive syringe locking assembly; 4. Syringe; 6. Drive mechanism; 7. Piston rod locking mechanism; 8. Power plate; 9. Upper piston rod pressure plate; 10. Lower piston rod pressure plate; 11. Clamping spring assembly; 12. Syringe follow-up locking mechanism; 13. Lower syringe pressure plate; 14. Lower end cap; 15. Locking spring assembly; 16. Fixing post assembly; 17. Replaceable silicone gasket. Detailed Implementation

[0019] 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 skilled in the art are within the protection scope of the present utility model.

[0020] It should be understood that in the description of the embodiments of this utility model, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model 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 the embodiments of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0021] like Figure 1-12 As shown in the embodiment of this utility model, an automatic locking and disassembly injection pump device suitable for automated synthesis includes a device body 1 and an adaptive syringe locking assembly 2 disposed within the device body 1. The adaptive syringe locking assembly 2 is used to adapt to and lock syringes 4 of different specifications. A drive mechanism 6 for providing power to the adaptive syringe locking assembly 2 is also provided within the device body 1 and above the adaptive syringe locking assembly 2. The adaptive syringe locking assembly 2 includes a piston rod locking mechanism 7 and a syringe follow-up locking mechanism 12 that cooperate and work together to clamp and drive the piston rod of the syringe 4 to perform liquid taking / draining operations.

[0022] According to an embodiment of the present invention, an automatic locking and disassembling injection pump device suitable for automated synthesis is provided. In a specific embodiment, the piston rod locking mechanism 7 includes a power plate 8, an upper piston rod pressure plate 9, a lower piston rod pressure plate 10, and a clamping spring assembly 11. The power plate 8 is connected to the drive mechanism 6.

[0023] According to an embodiment of the present invention, an automatic locking and disassembly injection pump device suitable for automated synthesis is provided. In a specific embodiment, the syringe follow-up locking mechanism 12 includes a syringe lower pressure plate 13, a lower end cover 14, and a locking spring assembly 15 disposed on the fixed column assembly 16. The syringe lower pressure plate 13 is linked with the power plate 8, and the lower end cover 14 is fixed to the device body 1.

[0024] According to an embodiment of the present invention, an automatic locking and disassembly injection pump device suitable for automated synthesis is provided. In a specific embodiment, the inner sides of the piston rod lower pressure plate 10 and the syringe lower pressure plate 13 are provided with arc-shaped contact surfaces. A replaceable silicone pad 17 is provided on the arc-shaped contact surface. The replaceable silicone pad 17 has a thickness of 2-5mm. The surface of the replaceable silicone pad 17 is provided with longitudinal anti-slip textures with a depth of 0.3mm and a spacing of 1.5mm. The longitudinal anti-slip textures are used to fill the small unevenness of the outer wall of the syringe 4 through elastic deformation, so that the locking positioning error is controlled within ±0.1mm.

[0025] According to an embodiment of the present invention, an automatic locking and disassembly injection pump device suitable for automated synthesis is provided. In a specific embodiment, the clamping spring assembly 11 adopts a dual-spring parallel structure, including a high-stiffness main spring and a low-stiffness auxiliary spring arranged in parallel. The stiffness coefficient of the main spring is 1.2 N / mm, and the stiffness coefficient of the auxiliary spring is 0.5 N / mm. This is used to automatically compensate for dimensional differences through deformation when the syringe diameter changes, ensuring that the locking force fluctuation range does not exceed ±0.2 N.

[0026] According to an embodiment of the present invention, an automatic locking and disassembly injection pump device suitable for automated synthesis is provided. In a specific embodiment, the drive mechanism 6 includes a stepper motor and a ball screw, and the slider of the ball screw is connected to the power plate 8; the stepper motor is equipped with an encoder for detecting the piston rod stroke position.

[0027] According to an embodiment of the present invention, an automatic locking and disassembling injection pump device suitable for automated synthesis is provided. In a specific embodiment, the device body 1 is provided with a mechanism for clamping and driving the piston rod of the syringe 4 and automatically separating after the operation is completed. The mechanism includes a stop bar fixed on the device body 1.

[0028] According to an embodiment of the present invention, an automatic locking and disassembling injection pump device suitable for automated synthesis is provided on the side of the device body 1 for quick docking with an external automated platform; the magnetic quick-change module has a built-in positioning pin.

[0029] According to an embodiment of the present invention, an automatic locking and disassembly injection pump device suitable for automated synthesis is provided. In a specific embodiment, the drive mechanism 6 is configured to enable the piston rod locking mechanism 7 and the syringe follow-up locking mechanism 12 to share the power provided by the power plate and achieve a common track design for synchronous operation.

[0030] According to an embodiment of the present invention, an automatic locking and disassembling injection pump device suitable for automated synthesis is provided. In a specific embodiment, the overall size of the injection pump device is 150mm*80mm*120mm, which can be directly embedded into the standard mounting position of an automated synthesis workstation.

[0031] To facilitate understanding of the above-mentioned technical solutions of this utility model, the following detailed description of the above-mentioned technical solutions of this utility model is provided through specific usage methods.

[0032] In practical use, the automatic locking and disassembly syringe pump device for automated synthesis, as described in this utility model, adopts a modular, layered integrated architecture. Its overall dimensions are controlled within 150mm × 80mm × 120mm (length × width × height), allowing direct embedding into the standard mounting positions of mainstream automated synthesis workstations. The core structure includes three main functional modules: an adaptive syringe locking assembly, a drive mechanism, and a trigger separation mechanism. These modules achieve coordinated operation through mechanical linkage, eliminating the need for additional complex electrical control systems and balancing reliability and cost advantages. The specific structure includes the adaptive syringe locking assembly, the trigger separation mechanism, and the modular integrated design.

[0033] The adaptive syringe locking assembly is used to adapt to and lock syringes of different specifications, including a piston rod locking mechanism and a syringe follow-up locking mechanism that work together; it includes a piston rod locking mechanism, a syringe follow-up locking mechanism, an elastic reset system, a multi-specification adaptation guide structure, and a self-detection function for locking status.

[0034] The piston rod locking mechanism includes a power plate, an upper piston rod pressure plate, a lower piston rod pressure plate, and a clamping spring assembly. The power plate is connected to the drive mechanism, and its bottom is securely connected to the lower piston rod pressure plate via screws. It then connects to a precision ball screw slider at its lower end. Circular guide grooves are provided above the upper piston rod pressure plate and the power plate for connecting the return spring. The inner side of the lower piston rod pressure plate has an arc-shaped contact surface to adapt to the curvature of the syringe's outer wall. When the syringe is inserted, the arc-shaped contact surface fits tightly against the syringe's outer wall, and the bidirectional compression of the upper and lower piston rod pressure plates forms a stable triangular force-bearing structure. Driven by the ball screw slider, the power plate moves up and down, and the return spring provides elastic buffering through the guide groove, ensuring that the locking force automatically adjusts according to the syringe size (locking force fluctuation less than 5N within the 1-20mL range), achieving a stepless adjustment function of "locking upon insertion and releasing upon withdrawal."

[0035] The syringe follow-up locking mechanism includes a syringe lower pressure plate, a lower end cap, and a locking spring assembly mounted on the fixed column assembly. The syringe lower pressure plate is linked to the power plate, and the lower end cap is fixed to the device body. When the syringe is inserted, the syringe lower pressure plate, pushed by the power plate, compresses the locking spring assembly and moves downward. Simultaneously, the lower end cap pushes the syringe upward through the spring's reaction force. This, combined with the bidirectional clamping force formed by the piston rod locking mechanism, ensures that the syringe remains vertically stable during installation and liquid transfer. This mechanism achieves follow-up positioning of the syringe through the elastic deformation of the spring and a common rail design, adapting to the locking requirements of syringes of different heights and avoiding syringe damage or liquid leakage caused by mechanical hard contact.

[0036] The elastic reset system's clamping spring assembly employs a dual-spring parallel structure, comprising a high-stiffness main spring (stiffness coefficient 1.2 N / mm) and a low-stiffness auxiliary spring (stiffness coefficient 0.5 N / mm). When the syringe diameter varies within the range of 1-20 mL, the auxiliary spring automatically compensates for dimensional differences through deformation, ensuring that the locking force fluctuation does not exceed ±0.2 N, thus meeting the vibration suppression requirements during reagent transfer.

[0037] Multi-size compatible guide structure: Replaceable silicone gaskets are embedded in the inner arc-shaped contact surfaces of the piston rod lower plate and the syringe lower plate. The thickness is adjustable from 2-5mm, and the surface has longitudinal anti-slip textures (0.3mm depth, 1.5mm spacing). The silicone gaskets fill the tiny unevenness of the syringe outer wall through elastic deformation. Combined with the positioning function of the guide groove, the locking and positioning error of 1mL fine syringes and 20mL coarse syringes is controlled within ±0.1mm, completely eliminating the risk of leakage caused by size mismatch in traditional devices.

[0038] Locking status self-detection function: A magnetic encoder mounted on the back of the stepper motor of the drive mechanism detects the piston rod stroke position in real time. When the syringe is fully locked, the encoder generates a stall signal and the position signal remains unchanged, triggering the circuit to conduct. This signal is transmitted to the main control system of the automated synthesis workstation via the integrated interface as a "syringe ready" feedback signal. If the syringe is not installed correctly, the system automatically pauses and alarms to prevent reagent leakage or transmission interruption due to locking failure.

[0039] The trigger separation mechanism is used to grip and drive the syringe piston rod and automatically separate after the operation is completed, including a stop bar fixed to the device body.

[0040] The piston rod consists of an upper pressure plate, a lower pressure plate, and a return spring, forming a double-pressure plate spring gripping unit. Under normal conditions, the spring drives the two pressure plates to close, forming a gripping cavity that matches the piston rod (the inner wall has anti-slip textures to prevent the piston rod from slipping). When the piston rod needs to be driven, the gripping unit moves with the transmission module, driving the piston rod to move linearly through friction, achieving precise liquid collection or discharge with a liquid control accuracy of ±0.1mL.

[0041] A fixed stop bar is installed at the end of the device. After the clamping unit finishes draining the liquid, it continues to move with the transmission module. The upper pressure plate first touches the stop bar and is blocked, while the transmission module drives the lower pressure plate to continue moving. The two pressure plates separate relative to each other, the spring is stretched, and the piston rod automatically disengages from the clamping unit. Subsequently, the transmission module reverses and resets, the upper pressure plate disengages from the stop bar, and the spring drives the two pressure plates to close, waiting for the next clamping. The entire separation process has a response time of ≤0.5s and requires no manual or electronic intervention.

[0042] The modular integrated design includes a magnetic quick-change module located on the side of the device body, which achieves non-destructive docking with the automation platform through a strong magnetic array. The magnetic quick-change module has built-in positioning pins for precise alignment with the automation platform interface, ensuring a positioning error of less than 0.1mm after repeated disassembly and assembly. This design reduces the space occupied by traditional mechanical interfaces by 20%, supports hot-swapping, and allows device replacement without interrupting platform operation. The entire device is made of lightweight aluminum alloy, with positioning holes common to automated synthesis workstations, robotic arm clamping positioning holes, and electrical interfaces on the side, allowing direct linkage with robotic arms and PLC control systems without the need for additional customized adapters. It is compatible with mainstream automated synthesis equipment interface protocols, supports horizontal / vertical dual-angle installation, and comes with different specifications of magnetic adapters for direct connection to high-throughput screening systems, desktop reaction workstations, etc. The stepper motor of the drive mechanism has a rear magnetic encoder that monitors the piston rod stroke position in real time, ensuring precise and controllable movement at every step and preventing equipment failure due to misalignment.

[0043] When in use, the working process of this injection pump device is as follows. The entire process requires no manual intervention and can realize automatic locking of the syringe, liquid transfer and disassembly.

[0044] Syringe Installation and Automatic Locking: The robotic arm grasps an empty syringe and inserts it vertically into the syringe mounting position of the device. The adaptive syringe locking assembly activates the moment of insertion. The power plate of the piston rod locking mechanism moves under the drive mechanism, forming a stable clamping effect through the bidirectional compression of the upper and lower piston rod pressure plates, combined with the inner arc-shaped contact surface and silicone gasket. The syringe follow-up locking mechanism's lower pressure plate presses down synchronously, compressing the locking spring assembly. The lower end cap pushes the syringe body upwards through the spring's reaction force, creating a bidirectional locking force. The dual springs in the clamping spring assembly automatically adjust the locking force according to the syringe specifications, ensuring reliable locking of syringes ranging from one to twenty milliliters. The encoder in the drive mechanism detects that the locking force has reached a preset threshold and sends a syringe-ready signal back to the main control system.

[0045] Liquid intake and discharge operations: The main control system triggers the separation mechanism. The double-pressure plate spring gripping unit closes under the action of the springs, clamping the piston rod. The gripping unit moves with the transmission module, using friction to drive the piston rod to intake or discharge liquid, with a liquid control accuracy of ±0.1 ml. The encoder monitors the piston rod stroke in real time to ensure accurate liquid transfer volume.

[0046] Automatic separation: After drainage is complete, the robotic arm drives the device to continue moving downwards. This triggers the separator, stopping the upper pressure plate. The transmission module continues to move the lower pressure plate, separating the two pressure plates. The spring is stretched, and the piston rod automatically disengages from the gripping unit. The transmission module then resets, the upper pressure plate disengages from the separator, and the spring drives the two pressure plates to close again, ready for the next gripping operation. The entire separation process has a response time of less than or equal to 0.5 seconds, requiring no electrical control or manual intervention.

[0047] Syringe removal and replacement: The robotic arm grips the used syringe and removes it from the locking mechanism. Simultaneously, the robotic arm picks up a new syringe from the storage rack, repeating the above installation, locking, liquid dispensing, and liquid drainage process to achieve continuous automated operation.

[0048] Multi-platform compatibility and rapid device changeover: The device interfaces with external automated platforms via a side-mounted magnetic quick-change module, with built-in positioning pins ensuring docking accuracy. The robotic arm performs adsorption, separation, and repositioning operations, enabling the device to switch between different platforms within ten seconds. It supports hot-swapping without affecting continuous system operation.

[0049] Status monitoring and safety protection: The system monitors the locking signal and piston rod position in real time. If locking fails or volume deviation exceeds limits, it immediately pauses and triggers an alarm. The silicone gasket and anti-slip texture design effectively prevent syringe slippage and leakage, ensuring operational safety and reagent integrity.

[0050] In summary, by utilizing the above-mentioned technical solution of this utility model, and by setting an adaptive spring-type syringe locking assembly, automatic and reliable locking and rapid release of syringes of different specifications are achieved, effectively avoiding errors and interruptions caused by manual operation. Combined with a trigger-type linkage piston rod clamping assembly, high-precision driving of the piston rod and automatic, non-destructive separation after operation are achieved, ensuring the accuracy and smoothness of the liquid transfer process. Furthermore, the modular integrated base and magnetic quick-change design allow the device to be flexibly and stably integrated into various automation platforms. This achieves full automation of the entire injection pump device in the automated synthesis process, from syringe loading, locking, liquid dispensing, and disassembly, thereby significantly improving operational efficiency, significantly enhancing liquid transfer accuracy and experimental repeatability, strengthening the adaptability and integration convenience of the equipment in different application scenarios, and reducing the potential safety risks of chemical reagents to operators.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An auto-locking and dismounting syringe pump device suitable for automated synthesis, characterized in that, The device includes a device body (1) and an adaptive syringe locking assembly (2) disposed within the device body (1). The adaptive syringe locking assembly (2) is used to adapt to and lock syringes (4) of different specifications. A drive mechanism (6) for providing power to the adaptive syringe locking assembly (2) is also provided within the device body (1) and above the adaptive syringe locking assembly (2). The adaptive syringe locking assembly (2) includes a piston rod locking mechanism (7) and a syringe follow-up locking mechanism (12) that work together to clamp and drive the piston rod of the syringe (4) to perform liquid taking / draining operations.

2. An auto-locking and detachable syringe pump device suitable for automated synthesis according to claim 1, wherein, The piston rod locking mechanism (7) includes a power plate (8), an upper piston rod pressure plate (9), a lower piston rod pressure plate (10), and a clamping spring assembly (11). The power plate (8) is connected to the drive mechanism (6).

3. An auto-locking and detachable syringe pump device suitable for automated synthesis according to claim 2, wherein, The syringe follow-up locking mechanism (12) includes a syringe lower pressure plate (13), a lower end cover (14) and a locking spring assembly (15) set on the fixed column assembly (16). The syringe lower pressure plate (13) is linked with the power plate (8), and the lower end cover (14) is fixed on the device body (1).

4. An auto-locking and dismounting syringe pump device suitable for automated synthesis according to claim 3, wherein, The inner sides of the piston rod pressure plate (10) and the syringe pressure plate (13) are provided with arc-shaped contact surfaces, and replaceable silicone pads (17) are provided on the arc-shaped contact surfaces. The replaceable silicone pads (17) are 2-5mm thick, and the surface of the replaceable silicone pads (17) is provided with longitudinal anti-slip textures with a depth of 0.3mm and a spacing of 1.5mm. The longitudinal anti-slip textures are used to fill the small unevenness of the outer wall of the syringe (4) through elastic deformation, so that the locking and positioning error is controlled within ±0.1mm.

5. The auto-locking and detachable syringe pump device suitable for automation synthesis according to claim 2, wherein, The clamping spring assembly (11) adopts a dual-spring parallel structure, including a high-stiffness main spring and a low-stiffness auxiliary spring arranged in parallel; the stiffness coefficient of the main spring is 1.2N / mm, and the stiffness coefficient of the auxiliary spring is 0.5N / mm, which is used to automatically compensate for size differences through deformation when the diameter of the syringe changes, so as to ensure that the locking force fluctuation range does not exceed ±0.2N.

6. An auto-locking and detachable syringe pump device suitable for automated synthesis according to claim 2, wherein, The drive mechanism (6) includes a stepper motor and a ball screw, the slider of which is connected to the power plate (8); the stepper motor is equipped with an encoder for detecting the position of the piston rod stroke.

7. The auto-locking and detachable syringe pump device suitable for automation synthesis according to claim 1, wherein, The device body (1) is provided with a mechanism for gripping and driving the piston rod of the syringe (4) and automatically separating after the operation is completed. The mechanism includes a stop bar fixed on the device body (1).

8. The auto-locking and detachable syringe pump device suitable for automation synthesis according to claim 1, wherein, The side of the device body (1) is provided with a magnetic quick-change module for quick docking with an external automation platform; the magnetic quick-change module has a built-in positioning pin.

9. The auto-locking and detachable syringe pump device suitable for automation synthesis according to claim 1, wherein, The drive mechanism (6) is configured to enable the piston rod locking mechanism (7) and the syringe follow-up locking mechanism (12) to share the power provided by the power plate and achieve synchronous operation via a common track design.

10. The auto-locking and detachable syringe pump device suitable for automated synthesis of claim 1, wherein, The overall dimensions of the injection pump device are 150mm*80mm*120mm, and it can be directly embedded into the standard mounting position of the automated synthesis workstation.

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