Directional filling machine for pre-filling type guide pipe flusher

Abstract

The invention relates to the technical field of filling equipment, in particular to a pre-filling type guide pipe flusher directional filling machine which comprises a filling rack, a filling assembly, a driving assembly and a pump injection assembly. The driving assembly is fixed to the inner side of the filling rack and used for driving the filling assembly to do lifting motion and driving oil liquid pumping work of the pumping assembly. According to the invention, the shaft row swings to synchronously link the filling assembly and the pump injection assembly system, and a precise synchronization mechanism is adopted, so that all working parts are ensured to operate together under coordinated actions. The mechanism ensures that the liquid can enter the pre-filled catheter flusher at an accurate flow rate, and in the filling process, the synchronous operation between the filling needle and the piston plate ensures the accurate injection of the liquid, and avoids the condition that the liquid is excessive or insufficient, so that the filling quantity of each pre-filled catheter flusher is ensured to be consistent, and the filling efficiency of the pre-filled catheter flusher is improved. And the consistency of products is effectively improved, and the accuracy of filling quantity control is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of filling equipment, in particular to a directional filling machine for a prefilled catheter flusher. Background Art

[0002] A prefilled catheter flusher is a device used for flushing catheters. Containing a 0.9% sodium chloride solution, it has a wide range of applications, minimal limitations, and is compatible with the internal environment, with minimal impact on the patient's condition and physiological parameters. The operating principle of the prefilled catheter flusher is based on the pressure transmission and spraying of liquids. During use, the flushing fluid is injected into the catheter connector via a syringe, and then sprayed into the catheter through the connector, achieving a cleansing and flushing effect.

[0003] Currently, prefilled catheter flushers are primarily used in the medical industry for cleaning catheters. Flushing fluid is typically introduced into the flushing tube via liquid injection. Traditional filling methods typically rely on a pumping mechanism to inject liquid into a piston barrel, then install the piston and exhaust the liquid to remove air bubbles. This method typically involves multiple steps: first, pumping the liquid into the barrel, then installing the piston, and finally, exhausting the air to remove air bubbles to ensure accurate and consistent liquid filling. This process typically involves multiple mechanical components and cumbersome adjustments, making it complex and prone to liquid waste and air bubbles.

[0004] However, the filling method of the prior art has several obvious shortcomings: 1. Operational complexity: Traditional methods require multiple manual or mechanical adjustments, and the liquid filling process is tedious and prone to errors.

[0005] 2. Liquid waste: In multiple operation steps, liquid is easily wasted due to excess or leakage, which reduces the efficiency of liquid use.

[0006] 3. Bubble problem: Since bubbles are easily generated during the installation and exhaust process of the piston, the bubbles may affect the uniform injection of the liquid, thereby affecting the flushing effect and usage accuracy.

[0007] 4. Inconsistent filling: Due to the complexity of the filling process, the filling amount of liquid may be inconsistent, affecting the consistency and quality of the product.

[0008] In view of this, research and improvement are conducted on the existing problems, and a prefilled catheter flusher directional filling machine is provided to solve the current problems. Summary of the Invention

[0009] This invention relates to a directional filling machine for prefilled catheter flushers, designed to address the existing issues of complex filling operations, liquid waste, bubble interference, and inconsistent filling volumes. Through precise synchronization mechanisms and automated design, the machine enables precise liquid injection, ensuring consistent filling volumes, improving production efficiency, and reducing manual errors, thereby enhancing product quality.

[0010] A directional filling machine for a prefilled catheter flusher comprises: a filling frame, a filling assembly, a drive assembly, and a pump assembly. The surface of the filling frame is provided with a conveying assembly. The drive assembly is fixed to the inner side of the filling frame and is used to drive the lifting movement of the filling assembly and the oil pumping operation of the pump assembly. The driving assembly includes a shaft frame, a motor, and an output shaft and a shaft row rotatably mounted on the surface of the shaft frame. One end of the output shaft is fixedly connected to the output end of the motor, and a crank wheel and a contact plate are fixedly sleeved on the surface of the output shaft. An active rod and a driven rod are respectively provided on both sides of the surface of the shaft row. A ring guide groove is provided on the surface of the crank wheel, and a sliding pin is provided on the surface of the active rod that is sleeved on the inner side of the ring guide groove. The active rod is connected to the filling assembly.

[0011] Furthermore, the filling assembly includes a lifting rod that slides through the filling machine frame and a plurality of filling needles. The top end of the lifting rod is fixedly connected to a synchronization bar, and the plurality of filling needles are evenly distributed on the surface of the synchronization bar. The bottom end of the filling needle is provided with a pressure plate head for pushing the internal piston of the prefilled catheter flusher to move downward, and a filling hole is opened on the surface of the filling needle for filling the prefilled catheter flusher. The end of the active rod is movably connected to the bottom end of the lifting rod.

[0012] Furthermore, a touch switch is fixedly installed on the surface of the filling machine frame, and the input end of the touch switch slides against the surface of the touch disk. The touch disk periodically contacts the touch switch during rotation, triggering the transmission of an electrical signal to the controller. The controller determines the current filling rhythm based on its output and controls the feeding rhythm of the conveying component in real time, thereby forming an automatic closed-loop control logic.

[0013] Furthermore, the annular guide groove is an annular structure, and the center of the annular guide groove deviates from the center of the crank wheel. The outer peripheral contour of the trigger plate is similar to the contour of the annular guide groove.

[0014] Furthermore, the shaft row is rotatably mounted on the surface of the shaft frame, the active rod and the driven rod are respectively arranged on opposite sides of the shaft row, and the shaft row swings periodically under the drive of the motor.

[0015] Furthermore, the conveying assembly includes a conveyor belt and a guide rail, the guide rail is fixed to the surface of the filling machine frame, and the conveyor belt is driven by a transmission motor to move along the guide rail to achieve automatic conveyance of the prefilled catheter flusher.

[0016] Furthermore, the pumping assembly includes a plunger pump barrel, a moving rod and a piston plate slidably sleeved on the inner side of the plunger pump barrel, the bottom end of the moving rod is provided with a moving connecting rod movably connected to the surface of the driven rod, the bottom end of the moving rod is fixedly connected to the bottom surface of the piston plate, the surface of the piston plate and the connection point between the liquid inlet pipe and the plunger pump barrel are provided with two one-way valve plugs arranged in opposite directions, the bottom end of the plunger pump barrel is connected to a delivery pipeline for replenishing flushing liquid, the top surface of the plunger pump barrel is connected to the liquid inlet pipe, and the end of the liquid inlet pipe is provided with a flexible conduit connected to each filling needle.

[0017] Furthermore, the top end of the dynamic link is rotatably connected to the bottom end of the motion rod, the bottom end of the dynamic link is rotatably connected to the surface of the driven rod, and the connection point is adjustable.

[0018] Furthermore, the motor adopts a stepper motor or a servo motor to ensure the stability and controllability of the movement of the lifting rod and the motion rod.

[0019] This invention utilizes a sophisticated synchronous control mechanism to ensure coordinated operation between the filling and pumping components, enabling precise liquid flow into prefilled catheter flushers. This synchronized operation prevents over- or underfilling, ensuring consistent filling of each flusher. The synchronized operation of the plunger barrel and filling needle in the pumping assembly ensures smoother liquid flow, prevents air bubbles, ensures precise injection, and reduces liquid waste. Furthermore, the automated design of the equipment simplifies the operational process, reduces the risk of human error, and further improves production stability and efficiency.

[0020] This invention offers significant technical advantages. First, a precise synchronization mechanism significantly improves filling consistency, preventing over- or underfilling. Second, the design of the pump assembly prevents air bubbles, reduces liquid waste, and improves filling accuracy. Finally, the automated conveying and control system ensures an efficient and precise production process, significantly improving production efficiency and reducing the complexity and risk of errors associated with manual operations.

[0021] Through these innovations, the present invention not only effectively solves the problems in the prior art, but also improves product quality consistency and production efficiency, providing a more efficient and accurate solution for the production of prefilled catheter flushers.

[0022] The beneficial effects achieved by the present invention are: 1. This invention utilizes a precise synchronization mechanism, using a shaft row to synchronously link the filling and pumping components, ensuring coordinated operation of all working components. This mechanism ensures that liquid enters the prefilled catheter flusher at a precise flow rate. During the filling process, the synchronized operation between the filling needle and piston plate ensures accurate liquid injection, preventing over- or underfilling, and ensuring a consistent fill volume for each prefilled catheter flusher. This innovation effectively improves product consistency and ensures precise fill volume control.

[0023] 2. In this invention, the plunger pump barrel in the pump assembly and the filling needle in the filling assembly work synchronously, ensuring smooth and controllable liquid flow. The pump assembly delivers liquid evenly and stably into the prefilled catheter flusher, preventing the formation of bubbles within the plunger pump barrel. This design not only ensures accurate liquid filling, but also avoids liquid waste and improves liquid utilization efficiency.

[0024] 3. In this invention, the trigger disc, through the coordinated operation of the crank wheel, periodically contacts the trigger switch, achieving precise control of the drive assembly's motion. This structure accurately monitors the crank wheel's rotation period and swing position, ensuring precise control of the conveyor assembly's operating status, thereby guaranteeing synchronization and accuracy during the filling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the surface structure of a filling machine frame according to an embodiment of the present invention; Figure 3 This is a schematic structural diagram of a filling assembly, a driving assembly, and a pumping assembly according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a drive assembly according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the shaft arrangement structure of an embodiment of the present invention; Figure 6 This is a schematic diagram of the crank wheel and the trigger plate structure according to an embodiment of the present invention; Figure 7 This is an enlarged schematic diagram of a filling needle and its local structure according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the cross-sectional structure of a pumping assembly according to an embodiment of the present invention.

[0026] Reference numerals: 100. Filling machine frame; 110. Conveying assembly; 200, filling assembly; 210, lifting rod; 220, filling needle; 211, synchronization bar; 221, platen head; 222, filling hole; 300, drive assembly; 310, shaft bracket; 320, motor; 330, shaft row; 340, crank pulley; 350, trigger plate; 321, output shaft; 331, active rod; 332, driven rod; 341, ring guide groove; 351, trigger switch; 400, pumping assembly; 410, plunger pump barrel; 420, moving rod; 430, piston plate; 411, liquid inlet pipe; 421, moving connecting rod; 431, one-way valve plug. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0028] It is to be understood that these descriptions are illustrative only and are not intended to limit the scope of the invention.

[0029] The following is combined with Figures 1 to 8 Some embodiments of the present invention provide a directional filling machine for a prefilled catheter flusher.

[0030] The specific embodiment of the prefilled catheter flusher directional filling machine of the present invention will be described in detail with reference to the accompanying drawings to illustrate the structure, function and working principle of each component. The composition, function and interaction of each major part of the present invention will be described in detail below.

[0031] The filling frame 100 serves as the supporting structure of the entire machine, carrying all key components, including the filling assembly 200, the drive assembly 300, the pump assembly 400, and the conveying assembly 110. The conveying assembly 110 is fixed to the surface of the filling frame 100 and is used to carry and automatically transport the prefilled catheter flusher to the designated location.

[0032] The filling assembly 200 is used to fill prefilled catheter flushers with liquid. It primarily consists of a lifting rod 210 that slides through the filling frame 100 and multiple filling needles 220. The lifting rod 210 is driven up and down by a drive assembly 300. During operation, the synchronization bar 211 at its top moves up and down, driving the multiple filling needles 220 into the prefilled catheter flusher to inject liquid.

[0033] Each filling needle 220 is evenly distributed on the surface of the synchronization bar 211. A pressure plate 221 is located at the bottom of each filling needle 220. This pressure plate 221 pushes the piston inside the prefilled catheter flusher downward, forming a filling cavity for easy liquid filling. Filling holes 222 are defined on the surface of each filling needle 220, through which liquid enters the prefilled catheter flusher.

[0034] The drive assembly 300 provides the driving force for the filling assembly 200 and the pump assembly 400, ensuring accurate delivery of liquid to the prefilled catheter flusher. The drive assembly 300 primarily consists of a shaft frame 310, a motor 320, an output shaft 321, a rotating shaft array 330, a crank wheel 340, and a trigger plate 350.

[0035] Motor 320 rotates crank wheel 340 via output shaft 321. Ring guide groove 341 on crank wheel 340 drives active rod 331 into periodic motion, which in turn drives active rod 331 and driven rod 332 on shaft array 330 to swing back and forth, controlling the up and down movement of lift rod 210. A trigger plate 350, in conjunction with a trigger switch 351, controls the operating state of delivery assembly 110, ensuring precise positioning and delivery of the catheter.

[0036] The pumping assembly 400 is used to provide the pressure required for liquid filling for the prefilled catheter flusher. The pumping assembly 400 includes a plunger pump barrel 410, a moving rod 420, a piston plate 430, and a moving connecting rod 421.

[0037] The piston plate 430 within the plunger pump barrel 410 is driven up and down by the motion rod 420. A one-way valve plug 431 allows liquid to enter the pump chamber under negative pressure. Liquid enters the plunger pump barrel 410 through the liquid inlet tube 411 and is transported through the flexible catheter to the filling needle 220, ultimately entering the prefilled catheter flusher. The stable movement of the pump assembly 400 ensures precise and smooth liquid delivery.

[0038] The conveyor assembly 110 is used to automatically transport prefilled catheter flushers. It comprises a conveyor belt and a guide rail. The guide rail is fixed to the surface of the filling machine frame 100, and the conveyor belt is driven along the guide rail by a transmission motor. This conveyor assembly 110 automatically transports prefilled catheter flushers along a predetermined path to the filling and dispensing locations, ensuring a smooth and efficient production process.

[0039] The present invention is also equipped with a touch switch 351 and a controller. The touch switch 351 works in conjunction with the touch disk 350 to monitor the motion of the motor 320 and the shaft array 330. The controller controls the start and stop of the conveying assembly 110 based on the signal output by the touch switch 351, ensuring that each flusher can be accurately positioned for filling.

[0040] The working principle and use process of the present invention: The present invention provides a directional filling machine for prefilled catheter flushers, which is mainly used to achieve precise filling of prefilled catheter flushers. The following is a detailed description of its working principle and usage process: 1. Transmission principle of drive assembly 300: After the motor 320 is started, its output shaft 321 drives the crank wheel 340 to rotate synchronously. The annular guide groove 341 on its surface drives the shaft row 330 to deflect through the active rod 331, and the active rod 331 and the driven rod 332 on the shaft row 330 swing back and forth accordingly.

[0041] The crank wheel 340 rotates synchronously, and the annular guide groove 341 on the surface of the crank wheel drives the lifting rod 210 to perform up and down reciprocating motion through the active rod 331 .

[0042] The trigger disk 350 periodically contacts the trigger switch 351 when the crank wheel 340 rotates, so as to monitor the movement of the shaft row 330 and control the operation status of the conveying assembly 110 .

[0043] 2. Working process of filling component 200: The lifting rod 210 is driven by the driving assembly 300 to perform lifting motion, thereby driving the synchronization bar 211 on the top thereof to move up and down as a whole.

[0044] The filling needle 220 rises and falls with the synchronization bar 211. When the filling needle 220 drops to the set position, its bottom end enters the inside of the flusher and uses the pressure plate head 221 to contact the piston of the prefilled catheter flusher, causing the piston to move downward to form a filling cavity.

[0045] At the same time, the pumping assembly 400 starts to pump liquid, and the liquid enters the plunger pump barrel 410 through the liquid inlet pipe 411, and drives the piston plate 430 to reciprocate through the moving rod 420.

[0046] Under the action of negative pressure, the liquid enters the pump chamber through the one-way valve plug 431 and is pumped to the flexible catheter when the piston plate 430 moves upward, and then enters the prefilled catheter flusher through the filling hole 222.

[0047] 3. Liquid delivery and flow control: Through the linkage between the driven rod 332 and the moving connecting rod 421, the moving rod 420 performs stable reciprocating motion, ensuring that the pumping process is carried out smoothly.

[0048] The flexible catheter connects the pump assembly 400 and the filling needle 220. Under the positive pressure of the pump, the liquid flows smoothly into the interior of the prefilled catheter flusher to achieve accurate filling.

[0049] Usage Process Equipment preparation: Connect the external delivery line and store the required flushing fluid in the liquid supply system. Place the prefilled catheter flusher in the designated position of the delivery assembly 110 and ensure it is aligned with the filling needle 220.

[0050] Start the device: The control system starts the motor 320 and puts the drive assembly 300 into operation. The trigger plate 350 cooperates with the trigger switch 351 to control the feeding and stopping of the conveying assembly 110, ensuring that each flusher can be accurately filled.

[0051] Filling Process: After the device is operational, the lifting rod 210 drives the filling needle 220 downward. The pressure plate head 221 presses the piston of the prefilled catheter flusher, creating negative pressure inside. The pump assembly 400 operates synchronously. Driven by the piston plate 430, the liquid enters the pump chamber through the one-way valve plug 431 and then flows through the flexible catheter and the filling needle 220 into the prefilled catheter flusher.

[0052] After the filling is completed, the lifting rod 210 drives the filling needle 220 to move upward, releasing the piston to ensure that the filling does not overflow.

[0053] Filling is completed: the conveying assembly 110 is activated to convey the filled pre-filled catheter flusher to the next process and simultaneously move a new catheter flusher to the filling position. The equipment operates in a cycle until all pre-filled catheter flushers are filled.

[0054] The present invention utilizes the above principle to achieve efficient, accurate and automated filling of prefilled catheter flushers, thereby improving production efficiency and reducing manual operation errors.

[0055] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0056] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A directional filling machine for a prefilled catheter flusher, characterized in that: include: A filling frame (100), a filling component (200), a driving component (300) and a pumping component (400); a conveying component (110) is provided on the surface of the filling frame (100); the driving component (300) is fixed to the inner side of the filling frame (100) and is used to drive the lifting movement of the filling component (200) and the oil pumping operation of the pumping component (400); The driving assembly (300) comprises a shaft frame (310), a motor (320), an output shaft (321) and a shaft row (330) rotatably mounted on the surface of the shaft frame (310), one end of the output shaft (321) being fixedly connected to the output end of the motor (320), and a crank wheel (340) and a contact plate (350) being fixedly sleeved on the surface of the output shaft (321), an active rod (331) and a driven rod (332) being respectively provided on both sides of the surface of the shaft row (330), a ring guide groove (341) being provided on the surface of the crank wheel (340), a sliding pin being sleeved on the inner side of the ring guide groove (341) being provided on the surface of the active rod (331), and the active rod (331) being connected to the filling assembly (200).

2. A directional filling machine for prefilled catheter flushers according to claim 1, characterized in that: The filling assembly (200) includes a lifting rod (210) that slides through the filling frame (100) and a plurality of filling needles (220). The top end of the lifting rod (210) is fixedly connected to a synchronization bar (211). The plurality of filling needles (220) are evenly distributed on the surface of the synchronization bar (211). The bottom end of the filling needle (220) is provided with a pressure plate head (221) for pushing the piston inside the prefilled catheter flusher to move downward. A filling hole (222) is opened on the surface of the filling needle (220) for filling the inside of the prefilled catheter flusher. The end of the active rod (331) is movably connected to the bottom end of the lifting rod (210).

3. A directional filling machine for prefilled catheter flusher according to claim 1, characterized in that: A touch switch (351) is fixedly mounted on the surface of the filling frame (100), and an input end of the touch switch (351) is in sliding contact with the surface of the touch disk (350). The touch disk (350) periodically contacts the touch switch during rotation, triggering an electrical signal to be transmitted to the controller. The controller determines the current filling rhythm based on the output of the touch switch and controls the feeding rhythm of the conveying component in real time, thereby forming an automatic closed-loop control logic.

4. A directional filling machine for prefilled catheter flushers according to claim 1, characterized in that: The annular guide groove (341) is an annular structure, and the center of the annular guide groove (341) deviates from the center of the crank wheel (340). The outer peripheral contour of the trigger plate (350) is similar to the contour of the annular guide groove (341).

5. A directional filling machine for prefilled catheter flusher according to claim 1, characterized in that: The shaft row (330) is rotatably mounted on the surface of the shaft frame (310), the active rod (331) and the driven rod (332) are respectively arranged on opposite sides of the shaft row (330), and the shaft row (330) swings periodically under the drive of the motor (320).

6. A directional filling machine for a prefilled catheter flusher according to claim 1, characterized in that: The conveying assembly (110) comprises a conveyor belt and a guide rail, the guide rail being fixed to the surface of the filling machine frame (100), and the conveyor belt being driven by a transmission motor to move along the guide rail to achieve automatic conveyance of the prefilled catheter flusher.

7. A directional filling machine for a prefilled catheter flusher according to claim 1, characterized in that: The pumping assembly (400) includes a plunger pump barrel (410), a moving rod (420), and a piston plate (430) slidably sleeved on the inner side of the plunger pump barrel (410). The bottom end of the moving rod (420) is provided with a moving connecting rod (421) movably connected to the surface of the driven rod (332). The bottom end of the moving rod (420) is fixedly connected to the bottom surface of the piston plate (430). Two one-way valve plugs (431) arranged in opposite directions are provided on the surface of the piston plate (430) and at the connection point between the liquid inlet pipe (411) and the plunger pump barrel (410). The bottom end of the plunger pump barrel (410) is connected to a delivery pipeline for replenishing flushing liquid. The top surface of the plunger pump barrel (410) is connected to the liquid inlet pipe (411), and the end of the liquid inlet pipe (411) is provided with a flexible conduit connected to each filling needle (220).

8. A directional filling machine for a prefilled catheter flusher according to claim 7, characterized in that: The top end of the moving link (421) is rotatably connected to the bottom end of the motion rod (420), and the bottom end of the moving link (421) is rotatably connected to the surface of the driven rod (332), and the connection point is adjustable.

9. A directional filling machine for prefilled catheter flusher according to claim 7, characterized in that: The motor (320) is a stepper motor or a servo motor to ensure the stability and controllability of the movement of the lifting rod (210) and the motion rod (420).

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