Sodium heparin quantitative filling equipment for heparin tubes
By designing the drive components and clamping cylinders, high-precision quantitative filling of heparin sodium filling equipment has been achieved, solving the problems of positioning deviation and liquid spillage, and improving the stability and adaptability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUIZHOU TIANDI MEDICAL DEVICES CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-21
AI Technical Summary
Existing heparin sodium filling equipment suffers from positioning deviations leading to inaccurate filling, tank shaking causing liquid spillage, affecting equipment cleanliness and efficiency, and lacks adaptability.
The drive assembly drives the turntable to achieve intermittent rotation, and the lever and protrusion structure provide high-precision position control. The clamping plate drive cylinder and silicone pad fix the heparin tube to prevent shaking and ensure that the filling head and heparin tube are accurately aligned.
It improves filling accuracy and efficiency, reduces raw material waste, extends equipment life, and enhances the overall practicality of the equipment and product quality.
Smart Images
Figure CN224529146U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heparin sodium filling technology, and more specifically, to a quantitative filling device for heparin sodium in heparin tubes. Background Technology
[0002] In the field of heparin sodium filling technology, quantitative filling equipment for heparin tubes is crucial. Heparin sodium, as an anticoagulant, is widely used in the pharmaceutical industry, and the accuracy and stability of its filling directly affect drug quality.
[0003] Currently, various heparin sodium filling equipment exists on the market. For example, the heparin sodium filling device disclosed in the prior art application [202322741097.9] achieves a certain degree of liquid filling functionality through a specific structure. However, existing filling equipment still has some shortcomings. On the one hand, the equipment uses a rotary drive method to achieve intermittent motion. Direct motor-driven intermittent motion often relies on motor start-stop or simple mechanical structures (such as cam mechanisms), making it difficult to achieve high-precision position control. Frequent motor start-stop can easily lead to rotary table positioning deviation, affecting the alignment accuracy between the filling head and the heparin tube, thus causing inaccurate filling volume. For example, the inertia during motor startup may cause the rotary table to overshoot, while the back electromotive force during shutdown may cause the rotary table to retract, both of which reduce the stability of the intermittent motion.
[0004] On the other hand, during the filling process, the liquid is easily spilled due to tank shaking, which not only wastes raw materials but also leaves dried marks on the equipment surface, affecting its cleanliness and limiting its overall usability. Furthermore, some equipment needs further improvement in filling efficiency, quantitative accuracy, and adaptability to different heparin tube sizes. With the pharmaceutical industry's increasingly stringent quality requirements for heparin sodium products, developing a precise, spill-free, and adaptable heparin sodium quantitative filling device has become an urgent problem to be solved. Utility Model Content
[0005] The purpose of this invention is to provide a quantitative filling device for heparin sodium in heparin tubes, in order to solve the problem mentioned in the background art that during the filling process, the filling liquid is easily spilled due to the shaking of the tank, which not only wastes raw materials, but also leaves dried marks on the surface of the equipment, affecting the cleanliness of the equipment and limiting its overall practicality.
[0006] To achieve the above objectives, this utility model provides a quantitative filling device for heparin sodium in heparin tubes, including a workbench. A turntable for placing heparin tubes is installed on the top of the workbench. A filling assembly for filling is arranged above the turntable. One side of the filling assembly is raised and lowered by a lifting screw slide. The bottom of the turntable is driven to rotate by a drive assembly. The drive assembly can drive the turntable to achieve intermittent rotation, thereby enabling the heparin tubes on the turntable to move sequentially to the bottom of the filling assembly and then stop moving. After filling, they continue to move and be removed.
[0007] This setup drives the turntable to rotate intermittently, allowing heparin tubes to enter the filling station sequentially according to a set order. This achieves an automated and continuous filling process, which significantly improves filling efficiency, reduces manual intervention, and lowers labor intensity and human error compared to manual filling methods.
[0008] Preferably, the drive assembly includes a drive disk with a lever mounted on one side. The drive disk is driven to rotate by a drive motor. Several protrusions are installed in a ring at equal intervals on the bottom of the turntable. The rotation of the drive disk can drive the lever to move. The lever pushes the protrusions to move until the lever disengages and the protrusions stop moving. The lever continues to move one revolution and returns to its original position, driving the next protrusion to move, thus realizing the intermittent movement of the turntable.
[0009] This setting ensures precise alignment between the filling head and the heparin tube, thereby achieving high-precision quantitative filling of heparin sodium, improving filling quality and product qualification rate, while extending the service life of the equipment and reducing equipment debugging and maintenance costs caused by inaccurate positioning.
[0010] Preferably, a support rod is installed at the bottom of the turntable, and the bottom of the support rod is rotatably connected to the bottom inner wall of the worktable via a bearing.
[0011] This feature includes a support rod mounted at the bottom of the turntable that is rotatably connected to the worktable via bearings, providing a stable support structure for the turntable.
[0012] Preferably, the top of the turntable is provided with a number of test tube slots at equal intervals in a ring. The test tube slots are used to place heparin tubes. The number of test tube slots is the same as the number of protrusions, and their positions correspond to each other.
[0013] This feature provides a fixed placement position for the heparin tubes in the test tube slots at the top of the turntable. It accurately defines the position of the heparin tubes, ensuring that each heparin tube is in the same position on the turntable and is centered at the filling station, which facilitates accurate alignment of the filling head for filling.
[0014] Preferably, the filling assembly includes a base, on top of which a filling head is mounted, and the top of the filling head is connected to a heparin sodium storage tank via a pipeline.
[0015] This configuration connects the filling head to the heparin sodium storage tank via a pipeline, ensuring a stable delivery of heparin sodium to the heparin tube and guaranteeing a continuous supply of liquid during the filling process.
[0016] Preferably, horizontal clamping plate drive cylinders are installed inside both sides of the base, and vertical clamping plates are installed on the output shaft of the clamping plate drive cylinders.
[0017] This feature utilizes clamping cylinders on both sides of the base to drive the clamping plates, thereby clamping and securing the heparin tube during the filling process. When the heparin tube moves to the bottom of the filling assembly, the clamping cylinders push the clamping plates to secure the heparin tube.
[0018] Preferably, a pad is installed on one side of the clamp, and the pad is made of silicone material.
[0019] The silicone pad installed on one side of the clamping plate utilizes the soft and elastic properties of silicone material to provide sufficient friction when clamping the heparin tube, preventing it from slipping during filling and ensuring accurate filling position. It also avoids damage to the surface of the heparin tube, protecting its integrity and improving product quality.
[0020] Preferably, the bottom of the base is provided with a horizontal guide opening, and the clamping plate slides in conjunction with the guide opening.
[0021] This feature provides precise guidance for the movement of the clamping plate through the guide port at the bottom of the base, allowing the clamping plate to slide smoothly and accurately in the horizontal direction under the drive of the clamping plate drive cylinder.
[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0023] In this heparin sodium quantitative filling device, the drive assembly adopts a structure in which a drive disc, a lever, and a bottom protrusion of the turntable cooperate. Compared with the traditional intermittent motion method that directly relies on motor start-stop or simple cam mechanism, this avoids problems such as inertial overshoot and back EMF backlash caused by frequent motor start-stop. The turntable moves intermittently by pushing the protrusion with the lever. When the lever disengages from the protrusion, the turntable stops moving. This mechanical transmission method can achieve high-precision position control, ensuring that the heparin tubes on the turntable move accurately and stably to the bottom of the filling assembly. This greatly improves the alignment accuracy between the filling head and the heparin tube, ensures the accuracy of the heparin sodium filling volume, and effectively overcomes the defect of inaccurate filling volume caused by positioning deviation in existing equipment.
[0024] The filling assembly features clamping cylinders and clamping plates on both sides of its base. During filling, the clamping cylinders drive the clamping plates to secure the heparin tubing, effectively limiting its movement. Simultaneously, a silicone pad on one side of the clamping plate provides sufficient friction to prevent slippage of the heparin tubing while avoiding damage. This design prevents liquid spillage due to tank movement, reduces material waste, avoids marks left on the equipment surface due to dried liquid, simplifies cleaning, and improves the overall usability of the equipment. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0026] Figure 2 This is a schematic diagram of the internal structure of the workbench in this utility model;
[0027] Figure 3 This is a schematic diagram of the filling component in this utility model;
[0028] Figure 4 This is a schematic diagram of the top structure of the turntable in this utility model;
[0029] Figure 5 This is a schematic diagram showing the cooperation between the turntable and the drive assembly in this utility model;
[0030] The meanings of the labels in the diagram are as follows:
[0031] 1. Workbench; 2. Lifting screw slide; 3. Filling assembly; 31. Base; 32. Filling head; 33. Clamping plate drive cylinder; 34. Clamping plate; 35. Pad; 4. Turntable; 41. Test tube trough; 42. Protrusion; 43. Support rod; 5. Drive assembly; 51. Drive motor; 52. Drive disc; 53. Lever. Detailed Implementation
[0032] 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.
[0033] This utility model provides a quantitative filling device for heparin sodium in heparin tubes, such as... Figure 1 , Figure 2As shown, the device includes a workbench 1, a turntable 4 for placing heparin tubes is mounted on the top of the workbench 1, a filling assembly 3 for filling is set above the turntable 4, one side of the filling assembly 3 is raised and lowered by a lifting screw slide 2, and the bottom of the turntable 4 is driven to rotate by a drive assembly 5. The drive assembly 5 can drive the turntable 4 to achieve intermittent rotation, so that the heparin tubes on the turntable 4 move sequentially to the bottom of the filling assembly 3 and then stop moving. After filling is completed, the tubes continue to move and are removed.
[0034] The lifting and lowering of the filling assembly 3 is controlled by the lifting screw slide 2, which precisely adjusts the distance between the filling head and the heparin tube. This ensures that both are in the correct position during filling, guaranteeing accuracy, and also allows the filling head to be raised when not filling, preventing collisions or interference with the turntable 4 or the heparin tube. The drive assembly 5 drives the turntable 4 to rotate intermittently, allowing the heparin tubes to enter the filling station sequentially according to a set order. This achieves an automated and continuous filling process, significantly improving filling efficiency, reducing manual intervention, labor intensity, and human error compared to manual operation or non-intermittent filling methods.
[0035] In this embodiment, as Figure 2 , Figure 5 As shown, the drive assembly 5 includes a drive disk 52, and a lever 53 is installed on one side of the drive disk 52. The drive disk 52 is driven to rotate by the drive motor 51. Several protrusions 42 are installed in a ring at equal intervals on the bottom of the turntable 4. The rotation of the drive disk 52 can drive the lever 53 to move. The lever 53 pushes the protrusions 42 to move until the lever 53 is disengaged and the protrusions 42 stop moving. The lever 53 continues to move one revolution and returns to its original position, driving the next protrusion 42 to move, thus realizing the intermittent movement of the turntable 4.
[0036] The structural design of the drive assembly 5, in which the drive disk 52, lever 53, and bottom protrusion 42 of the turntable 4 cooperate, effectively overcomes the problem of turntable positioning deviation caused by frequent motor starts and stops, compared to the traditional method of relying on motor start-stop or simple cam mechanism to achieve intermittent motion. The drive disk 52 drives the lever 53 to push the protrusion 42. After the lever 53 disengages from the protrusion 42, the turntable 4 stops. This mechanical transmission method makes the intermittent motion of the turntable 4 more stable and precise, ensuring accurate positioning of each heparin tube under the filling assembly 3, and ensuring precise alignment between the filling head and the heparin tube. This achieves high-precision quantitative filling of heparin sodium, improves filling quality and product qualification rate, extends the service life of the equipment, and reduces equipment debugging and maintenance costs caused by inaccurate positioning.
[0037] Specifically, such as Figure 2 , Figure 5 As shown, a support rod 43 is installed at the bottom of the turntable 4, and the bottom of the support rod 43 is rotatably connected to the bottom inner wall of the worktable 1 through a bearing.
[0038] The support rod 43 mounted at the bottom of the turntable 4 is rotatably connected to the worktable 1 via bearings, providing a stable support structure for the turntable 4. During the rotation of the turntable 4, the bearings reduce rotational friction resistance, making the rotation of the turntable 4 smoother and more stable, thus reducing energy consumption and wear. At the same time, stable support helps ensure the positional accuracy of the turntable 4 during intermittent movement, avoiding wobbling of the turntable 4 due to unstable support, which would affect the positioning and filling accuracy of the heparin tubes, thereby improving the reliability and stability of the equipment operation.
[0039] Furthermore, such as Figure 4 , Figure 5 As shown, the top of the turntable 4 is provided with several test tube slots 41 at equal intervals in a ring. The test tube slots 41 are used to place heparin tubes. The number of test tube slots 41 is the same as the number of protrusions 42, and their positions correspond to each other.
[0040] The test tube slots 41 at the top of the turntable 4 provide a fixed placement position for the heparin tubes, accurately defining their location and ensuring that each tube is consistently positioned on the turntable 4 and centered at the filling station. This facilitates accurate alignment of the filling head for filling. The number and position of the test tube slots 41 and the protrusions 42 are identical, ensuring that the heparin tubes can precisely and sequentially enter the filling assembly 3 during the intermittent movement of the turntable 4. This further improves filling accuracy and consistency, avoiding filling deviations and liquid spillage caused by inconsistent tube placement, thus enhancing filling efficiency and product quality.
[0041] Furthermore, such as Figure 3 As shown, the filling assembly 3 includes a base 31, and a filling head 32 is mounted on the top of the base 31. The top of the filling head 32 is connected to the heparin sodium storage tank via a pipeline. The filling head 32 is a conventional structure in filling equipment in the prior art, and will not be described in detail here.
[0042] The filling head 32 is connected to the heparin sodium storage tank via piping, enabling stable delivery of heparin sodium to the heparin tube and ensuring a continuous supply of liquid during the filling process. The base 31 of the filling assembly 3 provides a stable mounting foundation for the filling head 32, ensuring that the filling head 32 remains in a fixed position during the filling process. This prevents shaking or displacement from affecting the filling accuracy, allowing heparin sodium to be accurately and quantitatively filled into the heparin tube, improving the stability and accuracy of the filling process and meeting the stringent requirements of the pharmaceutical industry for the filling accuracy of heparin sodium.
[0043] Furthermore, such as Figure 3 As shown, horizontal clamping plate drive cylinders 33 are installed inside both sides of the base 31, and vertical clamping plates 34 are installed on the output shaft of the clamping plate drive cylinders 33.
[0044] The clamping cylinders 33 on both sides of the base 31 drive the clamping plates 34 to clamp and fix the heparin tube during the filling process. When the heparin tube moves to the bottom of the filling assembly 3, the clamping cylinders 33 push the clamping plates 34 to clamp the heparin tube, effectively limiting the shaking and displacement of the heparin tube, avoiding the problem of liquid spillage caused by tank shaking, reducing raw material waste, and ensuring the relative position stability between the filling head and the heparin tube, improving the accuracy and stability of filling, and enhancing the overall practicality and production efficiency of the equipment.
[0045] Furthermore, such as Figure 3 As shown, a pad 35 is installed on one side of the clamping plate 34. The pad 35 is made of silicone material.
[0046] The silicone pad 35 installed on one side of the clamping plate 34 utilizes the soft and elastic properties of silicone material to provide sufficient friction when clamping the heparin tube, preventing it from slipping during filling and ensuring accurate filling position. It also avoids damage to the surface of the heparin tube, protecting its integrity and improving product quality. Simultaneously, the good corrosion resistance and wear resistance of silicone material extend the service life of the pad 35, reducing equipment maintenance costs. Furthermore, it is easy to clean, ensuring the hygiene of the equipment and meeting the requirements of pharmaceutical production equipment.
[0047] Furthermore, such as Figure 3 As shown, the bottom of the base 31 is provided with a horizontal guide opening, and the clamping plate 34 slides in conjunction with the guide opening.
[0048] The guide port at the bottom of the base 31 provides precise guidance for the movement of the clamping plate 34, enabling the clamping plate 34 to slide smoothly and accurately in the horizontal direction under the drive of the clamping plate drive cylinder 33. This ensures the positional accuracy of the clamping plate 34 when clamping the heparin tube, and prevents the clamping plate 34 from shifting or jamming during movement. This ensures a stable and reliable clamping effect on the heparin tube, further improves the stability of the heparin tube during the filling process, ensures the accuracy and consistency of filling, and enhances the overall performance and reliability of the equipment.
[0049] In use, the heparin sodium quantitative filling equipment for heparin tubes of this invention first places the heparin tubes to be filled sequentially into the test tube slots 41 arranged in an annular pattern at equal intervals on the top of the turntable 4. The test tube slots 41 provide a fixed placement position for the heparin tubes, ensuring that each heparin tube is in the same position on the turntable 4 and is centered at the filling station, thus preparing for subsequent precise filling.
[0050] The drive motor 51 starts, causing the drive disk 52 to rotate, and the lever 53 on one side of the drive disk 52 moves accordingly. When the lever 53 contacts the equally spaced annular protrusions 42 at the bottom of the turntable 4, it pushes the protrusions 42 to move, thereby driving the turntable 4 to rotate. When the lever 53 disengages from the protrusions 42, the turntable 4 stops moving, and at this time, one heparin tube on the turntable 4 moves to the filling station below the filling assembly 3. After the lever 53 continues to move one revolution and returns to its original position, it pushes the next protrusion 42 again, driving the turntable 4 to rotate intermittently again, so that the next heparin tube enters the filling station. This cycle is repeated to achieve the sequential and orderly movement of the heparin tubes on the turntable 4.
[0051] During the movement of the heparin tube to the filling station, the lifting screw slide 2 controls the filling assembly 3 to move up and down according to a preset program or operator instructions, precisely adjusting the distance between the filling head 32 and the heparin tube to ensure that the filling head 32 is in the appropriate filling position and avoids collision or interference with the turntable 4 or the heparin tube. Simultaneously, the clamping plate drive cylinders 33 on both sides of the base 31 are activated, pushing the clamping plates 34 to slide along the guide opening at the bottom of the base 31, clamping and fixing the heparin tube at the filling station. The silicone pad 35 on one side of the clamping plate 34, with its soft and elastic properties, provides sufficient friction to prevent the heparin tube from slipping while avoiding damage to the surface of the heparin tube.
[0052] The filling head 32 is connected to the heparin sodium storage tank via a pipeline. Once the heparin tube is clamped and fixed, and the filling head 32 is adjusted to the appropriate position, the heparin sodium in the storage tank is pressurized and transported through the pipeline to the filling head 32, where it is accurately and quantitatively filled into the heparin tube. Because the base 31 of the filling assembly 3 provides a stable mounting foundation for the filling head 32, and the heparin tube is clamped and fixed, the position of the filling head 32 is effectively ensured to remain stable during the filling process, preventing shaking or displacement from affecting filling accuracy and ensuring that the heparin sodium can be accurately and stably filled into the heparin tube.
[0053] After the heparin sodium is filled, the clamping plate drive cylinder 33 drives the clamping plate 34 to release the heparin tube, and at the same time, the lifting screw slide 2 raises the filling assembly 3. Then, the drive assembly 5 moves again, driving the turntable 4 to perform another intermittent rotation, moving the filled heparin tube out of the filling station, and at the same time allowing the next heparin tube to be filled to enter the filling station. The above filling process is repeated to realize the continuous automated quantitative filling of heparin tubes.
[0054] Finally, it should be noted that the electronic components in the filling head 32 and other components in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.
[0055] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A heparin sodium quantitative filling device for heparin tubes, comprising a workbench (1), characterized in that: The top of the workbench (1) is equipped with a turntable (4) for placing heparin tubes. A filling assembly (3) for filling is provided above the turntable (4). One side of the filling assembly (3) is raised and lowered by a lifting screw slide (2). The bottom of the turntable (4) is driven to rotate by a drive assembly (5). The drive assembly (5) can drive the turntable (4) to achieve intermittent rotation, so that the heparin tubes on the turntable (4) move sequentially to the bottom of the filling assembly (3) and then stop moving. After filling is completed, they continue to move out.
2. The heparin sodium quantitative filling equipment for heparin tubes according to claim 1, characterized in that: The drive assembly (5) includes a drive disk (52), and a lever (53) is installed on one side of the drive disk (52). The drive disk (52) is driven to rotate by a drive motor (51). Several protrusions (42) are installed in a ring at equal intervals on the bottom of the turntable (4). The rotation of the drive disk (52) can drive the lever (53) to move. The lever (53) pushes the protrusions (42) to move until the lever (53) disengages and the protrusions (42) stop moving. The lever (53) continues to move one revolution and returns to its original position, driving the next protrusion (42) to move, thus realizing the intermittent movement of the turntable (4).
3. The heparin sodium quantitative filling equipment for heparin tubes according to claim 2, characterized in that: The bottom of the turntable (4) is equipped with a support rod (43), and the bottom of the support rod (43) is rotatably connected to the bottom inner wall of the worktable (1) through a bearing.
4. The heparin sodium quantitative filling equipment for heparin tubes according to claim 2, characterized in that: The top of the turntable (4) is provided with a number of test tube slots (41) at equal intervals in a ring. The test tube slots (41) are used to place heparin tubes. The number of test tube slots (41) is the same as the number of protrusions (42), and their positions are corresponding.
5. The heparin sodium quantitative filling equipment for heparin tubes according to claim 1, characterized in that: The filling assembly (3) includes a base (31) on which a filling head (32) is mounted, and the top of the filling head (32) is connected to a heparin sodium storage tank via a pipeline.
6. The heparin sodium quantitative filling device for heparin tubes according to claim 5, characterized in that: The base (31) has horizontally oriented clamping plate driving cylinders (33) installed inside both sides, and the output shaft of the clamping plate driving cylinders (33) is equipped with vertical clamping plates (34).
7. The heparin sodium quantitative filling device for heparin tubes according to claim 6, characterized in that: A pad (35) is installed on one side of the clamp (34), and the pad (35) is made of silicone material.
8. The heparin sodium quantitative filling device for heparin tubes according to claim 6, characterized in that: The bottom of the base (31) is provided with a horizontal guide opening, and the clamp (34) slides in cooperation with the guide opening.