Intravenous cannula forming assembly

Abstract

The application discloses a venous cannula forming assembly, a rack, wherein a layered plate is arranged in the rack, and a driving motor is arranged on the layered plate; a rotating mechanism, a tool positioning and clamping mechanism, a glue injection and heating mechanism, a positioning and baking mechanism, a tool automatic rotating mechanism, a heat dissipation and air exhaust mechanism and a cooling mechanism are arranged in the rack, the rotating mechanism comprises a rotating disc, special tools for clamping venous cannula are arranged on the rotating disc, and the rotating disc is driven by the driving motor arranged below the layered plate. The application improves production efficiency, reduces personnel configuration, improves product consistency, improves product production quality, maximally improves technical limitations and disadvantages of the original production mode, integrates multiple assemblies into an integrated equipment, effectively saves labor cost during production of products, and simultaneously optimizes production efficiency in a single-piece flow mode and improves product quality.

Description

Technical Field

[0001] This invention relates to the field of intravenous catheterization technology, specifically to an intravenous catheterization assembly. Background Technology

[0002] Intravenous catheterization is suitable for various cases requiring cardiopulmonary bypass for cardiac surgery. It is inserted and fixed in the superior and inferior vena cava to drain the body's blood into the extracorporeal circulation system.

[0003] During cardiopulmonary bypass, venous blood is drained into the cardiopulmonary bypass pump through a cannula in the vena cava by gravity, and then undergoes a series of processes. Therefore, when establishing cardiopulmonary bypass, cannulation is performed at appropriate sites in the superior and inferior vena cava. After successful cannulation, effective occlusion is required to prevent blood from flowing back into the right atrium. The most common occlusion method is to wrap a band around the vena cava and then tighten the band to achieve the occlusion effect.

[0004] The existing intravenous catheters require a process transfer after the spring is installed during manufacturing. The semi-finished intravenous catheters are leveled and baked using a glue-impregnation equipment, which is very inconvenient for production. Furthermore, the transfer of semi-finished products inevitably increases the risk of product scrap, and the outer diameter of the catheters has a large error that cannot ensure consistency. Therefore, we need to propose an intravenous catheter forming assembly equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a venous cannula forming assembly that improves production efficiency, reduces personnel requirements, enhances product consistency, improves product quality, minimizes the risk of scrap during production and semi-finished product transfer, ensures a compliant production environment, and reduces production intensity and process difficulty, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] The intravenous catheterization assembly includes:

[0008] A frame, wherein a layered plate is provided inside the frame, and a drive motor is provided below the layered plate;

[0009] The rotating mechanism, the glue injection mechanism of this invention, the heating mechanism, the tooling positioning and clamping mechanism, the positioning and baking mechanism, the tooling automatic rotation mechanism, the heat dissipation and ventilation mechanism, and the cooling mechanism are all installed inside the frame. The rotating station mechanism includes a turntable, on which a clamping fixture for intravenous cannula clamping is provided, and the turntable is driven by a drive motor installed below the layered plate.

[0010] The rotating mechanism includes:

[0011] The outer tooling positioning mechanism and the mandrel positioning mechanism are provided. The mandrel positioning mechanism has an insertion hole, and one end of the spring mandrel is inserted into the inside of the insertion hole. The outer tooling clamping and positioning mechanism is connected to the outer tooling of the insertion tube. A key connecting block is fixed at the upper end of the outer tooling clamping and positioning mechanism.

[0012] Preferably, the spring spindle positioning mechanism is provided in several groups, and the several groups of spring spindle positioning mechanisms are equally spaced on the rotating mechanism;

[0013] The spring spindle positioning mechanism includes a rodless cylinder, a gripper cylinder, and a spring limiting plate used in conjunction with the gripper cylinder. The output end of the rodless cylinder is connected to a flat plate, the gripper cylinder is mounted on the flat plate, and the spring limiting plate is mounted on the output end of the gripper cylinder. The spring limiting plate is powered by the gripper cylinder to perform gripping operations.

[0014] Preferably, the glue dispensing heating mechanism includes:

[0015] An electric telescopic rod fixed on the frame and a hot air gun installed at the telescopic end of the electric telescopic rod. The rotating station mechanism rotates the intravenous cannula after glue injection to the air outlet of the hot air gun for baking and shaping by the hot air gun. The hot air gun is equipped with a temperature control system.

[0016] Preferably, the glue injection heating mechanism further includes a glue storage tank, a glue injection mechanism, and a connecting pipe. The connecting pipe is used to connect the glue injection mechanism to the glue storage tank. An electric cylinder is installed at the lower end of the glue storage tank and on the frame. The output end of the electric cylinder is connected to a rubber piston block, which is located inside the glue storage tank. A discharge port is provided at the upper end of the glue storage tank, and one end of the connecting pipe is connected to the discharge port. A preheating device is provided outside the glue storage tank.

[0017] Preferably, the positioning and baking mechanism includes a linear module and a drive motor. A blower is mounted on the moving platform of the linear module to provide airflow to the hot air gun. A support rod is mounted on the output shaft of the drive motor. The linear module drives the hot air gun to move up and down to bake and shape the intravenous cannula after glue injection.

[0018] The drive motor is mounted on the frame via a lifting mechanism, and the output end of the drive motor is connected to a keyway block that cooperates with the key connection block.

[0019] Preferably, the clamping mechanism on the tooling includes:

[0020] The system includes a floating cylinder and a servo motor. The output end of the floating cylinder is equipped with a floating connector. The servo motor is equipped with a motor fixing plate. The floating connector abuts against the motor fixing plate. The output end of the servo motor is equipped with a connecting shaft. One end of the connecting shaft is equipped with a drive separation block. A spring is sleeved on the connecting shaft, and one end of the spring abuts against the outer wall of the drive separation block.

[0021] Preferably, the tooling clamping mechanism includes:

[0022] An ejector cylinder is used to eject the mandrel and transfer it to a rotating mechanism for reuse. One end of the ejector cylinder is provided with a pusher head, the outer diameter of which is smaller than the inner diameter of the rigid outer tube.

[0023] Preferably, the tooling automatic rotation mechanism includes:

[0024] A first transmission gear is provided at the output end of the drive motor, and a second transmission gear corresponding to the first transmission gear is connected to one end of the keyway block. The first transmission gear and the second transmission gear are connected by a transmission belt.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. This invention improves production efficiency, reduces personnel requirements, enhances product consistency, improves product quality, and minimizes the risk of scrap during production and semi-finished product transfer.

[0027] 2. This invention integrates multiple assemblies into a single unit, which effectively saves labor costs during product manufacturing. At the same time, the optimized production efficiency of the single-piece flow model improves the quality of the manufactured products.

[0028] 3. This invention effectively improves the production environment and reduces the workload of production personnel and the difficulty of the process.

[0029] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the internal structure of the frame of the present invention;

[0032] Figure 3 This is a top view of the structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the layered plate structure of the present invention.

[0034] In the diagram: 1. Rack; 2. Layered board;

[0035] 4. Rotating mechanism; 12. Outer tooling positioning mechanism; 13. Tooling lower clamping mechanism; 14. Spring spindle positioning mechanism; 17. Rodless cylinder; 18. Gripper cylinder; 19. Spring limit plate;

[0036] 5. Glue injection heating mechanism; 20. Electric telescopic rod; 30. Glue storage tank; 31. Glue injection mechanism;

[0037] 6. Positioning and baking mechanism; 22. Linear module; 23. Drive motor; 24. Support rod; 21. Hot air gun;

[0038] 7. Fixture clamping mechanism; 25. Floating cylinder; 26. Servo motor; 27. Drive separation block;

[0039] 29. Eject cylinder;

[0040] 9. Rotating station mechanism; 10. Turntable; 11. Clamping fixture. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figure 1-4 The present invention provides the following technical solution:

[0043] The intravenous catheterization assembly includes:

[0044] The frame 1 has a layered plate 2 inside, and a drive motor is located below the layered plate 2.

[0045] The rotating mechanism 4, the glue injection heating mechanism 5, the positioning and baking mechanism 6, the tooling clamping mechanism 7, and the tooling automatic rotation mechanism are installed inside the frame 1.

[0046] The tooling clamping mechanism 13 includes:

[0047] The ejector cylinder 29 ejects the mandrel and transfers it to the rotating mechanism 4 for reuse. One end of the ejector cylinder 29 is provided with a pusher head, the outer diameter of which is smaller than the inner diameter of the rigid outer tube.

[0048] The rotating mechanism 4 includes:

[0049] The outer tooling positioning mechanism 12 and the spring spindle positioning mechanism 14 are provided. The spring spindle positioning mechanism 14 has an insertion hole, and one end with the spring spindle is inserted into the insertion hole. The upper end of the outer tooling positioning mechanism 12 is connected to the outer tooling, and a key connecting block is fixed to the upper end of the outer tooling positioning mechanism 12.

[0050] Several sets of spring spindle positioning mechanisms 14 are provided, and the sets of spring spindle positioning mechanisms 14 are equally spaced on the rotating mechanism 4. The positioning and baking mechanism 6 includes a linear module 22 and a drive motor 23. A cold air fan is installed on the moving platform of the linear module 22. A support rod 24 is installed on the output shaft end of the drive motor 23. The linear module 22 drives the cold air fan to move up and down to cool the intravenous catheter after glue injection. The drive motor 23 is installed on the frame 1 through a lifting mechanism. The output end of the drive motor 23 is connected to a keyway block that cooperates with the key connection block.

[0051] The output end of the drive motor 23 is provided with a first transmission gear, and one end of the keyway block is connected to a second transmission gear corresponding to the first transmission gear. The first transmission gear and the second transmission gear are connected by a transmission belt.

[0052] The spring spindle positioning mechanism 14 includes a rodless cylinder 17, a gripper cylinder 18, and a spring limiting plate 19 that works in conjunction with the gripper cylinder 18. The output end of the rodless cylinder 17 is connected to a flat plate. The gripper cylinder 18 is mounted on the flat plate. The spring limiting plate 19 is mounted on the output end of the gripper cylinder 18, and the spring limiting plate 19 performs gripping operations through the gripper cylinder 18 as the power mechanism.

[0053] Also includes:

[0054] The rotating station mechanism 9 includes a turntable 10, on which a clamping fixture 11 for clamping intravenous catheters is provided, and the turntable 10 is driven by a drive motor installed below the layered plate 2.

[0055] It should be noted that the glue dispensing heating mechanism 5 includes:

[0056] The electric telescopic rod 20 fixed on the frame and the hot air gun 21 installed at the telescopic end of the electric telescopic rod 20 are used to rotate the intravenous cannula after glue injection to the air outlet of the hot air gun 21 for drying. The glue injection heating mechanism 5 also includes a glue storage tank 30, a glue injection mechanism 31 and a connecting pipe. The connecting pipe is used to connect the glue injection mechanism 31 and the glue storage tank 30. An electric cylinder is installed at the lower end of the glue storage tank 30 and on the frame 1. The output end of the electric cylinder is connected to a rubber piston block. The rubber piston block is located inside the glue storage tank 30. A discharge port is provided at the upper end of the glue storage tank 30 and one end of the connecting pipe is connected to the discharge port.

[0057] It is worth noting that the clamping mechanism 7 on the tooling includes:

[0058] The floating cylinder 25 and the servo motor 26 are provided. The output end of the floating cylinder 25 is equipped with a floating joint. The servo motor 26 is provided with a motor fixing plate. The floating joint abuts against the motor fixing plate. The output end of the servo motor 26 is equipped with a connecting shaft. One end of the connecting shaft is provided with a drive separation block 27. A spring is sleeved on the connecting shaft. One end of the spring abuts against the outer wall of the drive separation block 27.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A venous cannula forming assembly, characterized in that, include: A frame (1) is provided inside the frame (1), and a drive motor is provided below the layered plate (2); The rotating mechanism (4), the glue injection heating mechanism (5), the positioning baking mechanism (6), the tooling clamping mechanism (7), and the tooling automatic rotation mechanism are installed inside the frame (1). The rotating mechanism (4) includes: The outer tooling clamping and positioning mechanism (12) and the spring spindle positioning mechanism (14) are provided with an insertion hole. One end of the spindle with the spring installed is inserted into the insertion hole. The outer tooling clamping and positioning mechanism (12) is connected to the outer tooling. A key connecting block is fixed at the upper end of the tooling clamping and positioning mechanism. Also includes: Rotating station mechanism (9), the rotating station mechanism (9) includes a turntable (10), the turntable (10) is provided with a clamping fixture (11) for clamping intravenous catheters, and the turntable (10) is driven by a drive motor installed below the layered plate (2). The spring spindle positioning mechanism (14) is provided in several groups, and the several groups of spring spindle positioning mechanisms (14) are equally spaced on the rotating mechanism (4); The spring spindle positioning mechanism (14) includes a rodless cylinder (17), a gripper cylinder (18), and a spring limiting plate (19) used in conjunction with the gripper cylinder (18). The output end of the rodless cylinder (17) is connected to a flat plate. The gripper cylinder (18) is mounted on the flat plate. The spring limiting plate (19) is mounted on the output end of the gripper cylinder (18). The spring limiting plate (19) uses the gripper cylinder (18) as a power mechanism to perform clamping and locking operations on the tooling and the spindle. The glue injection heating mechanism (5) includes: An electric telescopic rod (20) fixed on the frame and a hot air gun (21) installed at the telescopic end of the electric telescopic rod (20). The rotating station mechanism (9) rotates the intravenous catheter tool after glue injection to the air outlet of the hot air gun (21) for drying and sizing by the hot air gun (21). The hot air gun is equipped with a temperature control system. The glue injection heating mechanism (5) further includes a glue storage tank (30), a glue injection mechanism (31), and a connecting pipe. The connecting pipe is used to connect the glue injection mechanism (31) to the glue storage tank (30). An electric cylinder is installed at the lower end of the glue storage tank (30) and on the frame (1). A rubber piston block is connected to the output end of the electric cylinder. The rubber piston block is located inside the glue storage tank (30). A discharge port is provided at the upper end of the glue storage tank (30), and one end of the connecting pipe is connected to the discharge port. A preheating device is provided outside the glue storage tank.

2. The intravenous cannulation assembly according to claim 1, characterized in that: The positioning and baking mechanism (6) includes a linear module (22) and a drive motor (23). A blower is installed on the moving platform of the linear module (22) to provide air source for the hot air gun. A support rod (24) is installed on the output shaft end of the drive motor (23). The linear module (22) drives the hot air gun to move up and down to position and bake the intravenous catheter tooling after glue injection. The drive motor (23) is mounted on the frame (1) via a lifting mechanism, and the output end of the drive motor (23) is connected to a keyway block that cooperates with the key connection block.

3. The intravenous cannulation assembly according to claim 1, characterized in that: The tooling clamping mechanism (7) includes: A floating cylinder (25) and a servo motor (26) are provided. The output end of the floating cylinder (25) is equipped with a floating connector. The servo motor (26) is provided with a motor fixing plate. The floating connector abuts against the motor fixing plate. The output end of the servo motor (26) is equipped with a connecting shaft. One end of the connecting shaft is provided with a drive separation block (27). A spring is sleeved on the connecting shaft. One end of the spring abuts against the outer wall of the drive separation block (27).

4. The intravenous cannulation assembly according to claim 1, characterized in that: The tooling clamping mechanism (13) further includes: The ejector cylinder (29) ejects the mandrel and transfers it to the rotating mechanism (4) for reuse. One end of the ejector cylinder (29) is provided with a top head, the outer diameter of which is smaller than the inner diameter of the rigid outer tube.

5. The intravenous cannulation assembly according to claim 2, characterized in that: The aforementioned automatic tooling rotation mechanism includes: The output end of the drive motor (23) is provided with a first transmission gear, and one end of the keyway block is connected to a second transmission gear corresponding to the first transmission gear. The first transmission gear and the second transmission gear are connected by a transmission belt.

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