Punching tool for duckbilled one-way valve

Abstract

The utility model belongs to the field of medical instrument processing equipment, and provides a duckbilled one-way valve tapping tool which comprises a right sliding block, a left sliding block, a guide seat, a limiting seat, a spring, a blade seat and a base, the upper portion of the right sliding block and the upper portion of the left sliding block are matched to form a duckbilled shape, and the shape of the duckbilled one-way valve is matched with that of the duckbilled one-way valve. A cavity is formed between the right sliding block and the left sliding block and used for containing a blade, the lower portion of the right sliding block and the lower portion of the left sliding block are installed on a limiting base through a fixing shaft, and a spring is arranged below the limiting base. According to the device with the structure, under the guiding action of the left sliding block and the right sliding block, it is guaranteed that the opening position of the device is located on the center line of the duckbilled position of the duckbilled one-way valve, meanwhile, the right sliding block and the left sliding block are pressed downwards, the limiting base drives the fixing shaft to move downwards, and the blade extends out of a gap between the right sliding block and the left sliding block; therefore, the duckbilled part of the duckbilled one-way valve is accurately cut, the accuracy is high, and the rejection rate can be effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of medical device processing equipment, specifically relating to a duckbill-type check valve processing device, and specifically provides a duckbill-type check valve drilling fixture. Background Technology

[0002] A duckbill check valve is a type of all-rubber check valve, named for its duckbill-like shape. It possesses excellent elasticity and sealing performance. When there is no liquid flowing inside the duckbill valve, the duckbill is closed due to its elasticity. When liquid enters, it exerts pressure on the valve's inner wall, causing the opening at the duckbill to widen as the liquid flow increases, allowing liquid to escape. When the liquid flow decreases, the opening closes until it is completely sealed, effectively preventing backflow. Therefore, the quality of the opening at the duckbill is crucial to the performance of the duckbill valve.

[0003] In existing technologies, the duckbill-type check valve is manufactured with a closed duckbill section due to material limitations. After molding, the duckbill section needs to be cut open to achieve its check valve function. Currently, the common method is to fit it onto a tooling fixture and cut it with a blade. However, during the cutting process, due to manual installation deviations and operational efficiency issues, the duckbill valve's position may be misaligned when opening, resulting in a high scrap rate. Therefore, there is an urgent need for an operating fixture with high efficiency and low scrap rate. Summary of the Invention

[0004] This utility model provides a tooling for opening holes in a duckbill-type check valve to solve the problem of high scrap rate caused by positional deviation during the cutting of duckbill-type check valves in the prior art.

[0005] To achieve the above objectives, the specific technical solution provided by this utility model is as follows:

[0006] A tooling for opening a duckbill-type check valve includes a right slider, a left slider, a guide seat, a limit seat, a spring, a blade seat, and a base. The upper parts of the right slider and the left slider are fitted together to form a duckbill shape, which matches the shape of the duckbill-type check valve. A cavity is formed in the middle of the right slider and the left slider to place the blade. The blade is mounted on the blade seat, and the blade seat is mounted on the base with a second fixing screw. The lower parts of the right slider and the left slider are mounted on the limit seat with a fixing shaft. The limit seat is located inside the guide seat. A spring is provided below the limit seat. The spring is fitted on the blade seat, and the two ends of the spring abut against the bottom of the limit seat and the top of the base, respectively. The guide seat and the base are fixed together with a first fixing bolt.

[0007] The right and left sliders are symmetrically arranged, and their upper parts fit together to form a duckbill shape, which matches the shape of the duckbill one-way valve. When installing the duckbill one-way valve, the center line of the duckbill can be aligned with the upper part of the left and right sliders. When the right and left sliders are in contact, their diameter is slightly smaller than that of the duckbill one-way valve, which facilitates installation. There is a cavity in the middle of the right and left sliders for placing the blade. When the right and left sliders are in contact, they completely cover the blade. The lower part of the right and left sliders is provided with through holes for fixing shafts to be mounted on the limit seat. The bottom of the limit seat has a spring that abuts against the upper part of the base. By pressing down the right and left sliders at the same time, the limit seat moves the fixed shaft downward, and the blade extends out from the middle gap.

[0008] Furthermore, silicone tubes are fitted above the fixed shafts of the right and left sliders. The elasticity of the silicone tubes is used to fix the right and left sliders, making them fit together, and also to reset the right and left sliders.

[0009] The limiting seat is connected to the lower part of the right and left sliders via a fixed shaft, limiting the highest position of the sliders. Furthermore, a spring is provided below the limiting seat, with both ends of the spring abutting against the bottom of the limiting seat and the top of the base, respectively, so that the limiting seat can only move up and down along the inner wall of the guide seat. The guide seat and the base are fixed together with the first fixing bolt.

[0010] The upper end of the blade is the sharpened end, and the lower part is fixedly connected to the blade holder. The blade has a groove in the middle to facilitate the passage of the fixing shaft. The blade holder is installed on the base with a second fixing screw.

[0011] Compared with the prior art, the present invention has achieved the following technical effects:

[0012] (1) The overall structure of the drilling tool for the duckbill type check valve of this utility model is simple and easy to operate. Under the guidance of the left and right sliders, the opening position is ensured to be at the center line of the duckbill of the duckbill type check valve. At the same time, the right and left sliders are pressed down, so that the limit seat drives the fixed shaft to move down. The blade extends out from the gap between the right and left sliders, thereby accurately cutting the duckbill of the duckbill type check valve. The accuracy is high and the scrap rate can be effectively reduced.

[0013] (2) The punching fixture adopts a closed structure. When not in use, the blade is enclosed in the cavity between the right and left sliders, which makes it less likely to cause accidental injury.

[0014] (3) Because the blade will wear out after frequent use, the present invention sets a right slider and a left slider so that the blade can be continuously ground by the right slider and the left slider during the extension and retraction process, which can extend the service life of the blade. At the same time, the blade holder can be pulled out from the bottom by disassembling the fixed shaft and the second fixed bolt to replace the blade. Attached Figure Description

[0015] Figure 1 Schematic diagram of the external structure of the drilling fixture for the duckbill-type check valve (with the duckbill-type check valve already fitted).

[0016] Figure 2 Top view of the drilling fixture for a duckbill check valve;

[0017] Figure 3 for Figure 2 Cross-sectional view of the duckbill type unidirectional punching fixture (blade not protruding);

[0018] Figure 4 for Figure 2 Cross-sectional view of the duckbill type unidirectional punching fixture (blade protruding).

[0019] Figure 5 This is an isometric view of the internal components of a duckbill-type unidirectional drilling fixture in their connection state (with the blade not protruding).

[0020] Wherein: 1 is the blade, 1-1 is the slide groove, 1-2 is the through hole, 2 is the duckbill one-way valve, 3 is the right slider, 4 is the silicone tube, 5 is the fixed shaft, 6 is the limit seat, 7 is the blade seat, 8 is the base, 9 is the first fixing bolt, 10 is the second fixing bolt, 11 is the spring, 12 is the guide seat, and 13 is the left slider. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] This utility model provides a drilling fixture for a duckbill-type check valve, the shape of which is as follows: Figure 1 As shown, the overall structure is closed, and the internal structure is as follows: Figure 2 and Figure 3 As shown, it includes a right slider 3, a left slider 13, a guide seat 12, a limit seat 6, a spring 11, a blade seat 7, and a base 8. The right slider 3 and the left slider 13 are symmetrically arranged, and their upper parts are fitted together to form a duckbill shape, which matches the shape of the duckbill type one-way valve 2. A cavity is formed in the middle of the right slider 3 and the left slider 13 to place the blade 1. The blade 1 is installed on the blade seat 7. The upper end of the blade 1 is the sharpened end, and the lower part is fixedly connected to the blade seat 7. An interference fit can be used. A groove 1-1 is provided in the middle of the blade 1 to facilitate the passage of the fixed shaft 5. The blade seat 7 is installed on the base 8 with a second fixing screw 10.

[0023] Both the right slider 3 and the left slider 13 have through holes 1-2 at their lower parts and are movably mounted on the limiting seat 6 via the fixed shaft 5. The limiting seat 6 is installed inside the guide seat 12. A spring 11 is provided below the limiting seat 6. The spring 11 is fitted on the blade seat 7, and the two ends of the spring 11 abut against the bottom of the limiting seat 6 and the top of the base 8, respectively. The guide seat 12 and the base 8 are fixed together with the first fixing bolt 9.

[0024] When installing the duckbill-type check valve 2, the center line of its duckbill can be aligned with the upper part of the left slider 3 and the right slider 13. When the right slider 3 and the left slider 13 are in contact, their diameter is slightly smaller than that of the duckbill-type check valve 2, which facilitates installation. There is a cavity in the middle of the right slider 3 and the left slider 1 to place the blade 1. When the right slider 3 and the left slider 13 are in contact, they can completely cover the blade 1. The fixed shaft 5 passes through the through hole 1-2 at the bottom of the right slider 3 and the left slider 13 and installs it on the limit seat 6. The bottom of the limit seat 6 has a spring 11 that abuts against the upper part of the base 8. By pressing down on the plane of the right slider 3 and the left slider 13 at the same time, the limit seat 6 drives the fixed shaft 5 to move down, and the blade 1 extends out from the middle gap, thereby accurately cutting the duckbill of the duckbill-type check valve 2.

[0025] Furthermore, a silicone tube 4 is fitted above the fixing shaft 5 of the right slider 3 and the left slider 13. Under the elastic action of the silicone tube 4, the right slider 3 and the left slider 13 can be fixed, making them fit better. At the same time, it is convenient for the right slider 3 and the left slider 13 to be reset after cutting.

[0026] Furthermore, the blade 1 is continuously ground by the right slider 3 and the left slider 13 during the extension and retraction process, which can extend its service life.

[0027] The two ends of the spring 11 inside the guide seat 12 abut against the bottom of the limit seat 6 and the top of the base 8, respectively, so that the limit seat 6 can only move up and down along the inner wall of the guide seat 12. The guide seat 12 and the base 8 are fixed together with the first fixing bolt 9 to ensure the stability of the drilling fixture.

[0028] like Figure 5 As shown, the fixed shaft 5 passes through the lower through holes 1-2 of the right slider 3 and the left slider 13 and the groove 1-1 of the middle blade, connecting the lower parts of the right slider 3 and the left slider 13 to the limiting seat 6, thereby limiting the highest position of the right slider 3 and the left slider 13.

[0029] Preferably, the fixed shaft 5 and the second fixed screw 10 are removable for easy replacement of the blade.

[0030] The specific implementation method is as follows:

[0031] Place the duckbill-type check valve 2, which requires drilling, onto the right slider 3 and left slider 13, with its opening positioned at the center line of the duckbill of the check valve 2. At this point, the blade 1 is not extended, and the right slider 3 and left slider 13 are in a fitted state, with their diameters slightly smaller than the duckbill-type check valve 2 for easy installation. After installation, press down on the flat surfaces of the right slider 3 and left slider 13 simultaneously, causing the limiting seat 6 to move the fixed shaft 5 downwards. The blade 1 extends from the gap between the right slider 3 and left slider 13, thus accurately cutting the duckbill of the duckbill-type check valve 2. After cutting, release the right slider 3 and left slider 13. The limiting seat 6 moves upwards to reset under the action of the spring 11. After the upper parts of the right slider 3 and left slider 13 pass the head of the blade 1, they refit under the elastic action of the silicone tube 4. At this point, their diameters return to a state smaller than the duckbill-type check valve 2, facilitating the disassembly of the duckbill-type check valve 2.

[0032] When it is necessary to replace the blade 1 later, the blade holder 7 can be pulled out from the bottom by disassembling the fixing shaft 5 and the second fixing bolt 10, thus replacing the blade 1.

[0033] In summary, the duckbill-type check valve drilling fixture provided by this utility model has a simple structure and is easy to operate. After the right and left sliders are attached, the upper part matches the shape of the duckbill-type check valve, and its opening can be aligned with the center line of the duckbill. The position will not deviate during cutting, which can effectively reduce the scrap rate. The whole adopts a closed structure. When not in use, the blade is located in the middle cavity between the right and left sliders, which is not easy to cause accidental operation injury. The blade is ground by the right and left sliders during the extension and retraction process, which extends its service life. At the same time, the blade seat can be pulled out from the bottom by disassembling the fixed shaft and the second fixed bolt, which facilitates the replacement of the blade.

[0034] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A duckbill check valve piercing tool, characterized by, The utility model relates to a duckbill type one-way valve, including blade (1), right slider (3), left slider (13), guide seat (12), limiting seat (6), spring (11), blade seat (7) and base (8), wherein right slider (3) and left slider (13) are symmetrically arranged, and the upper portion cooperation forms duckbill shape, and the duckbill shape is matched with the appearance of duckbill type one-way valve (2), the middle part of right slider (3) and left slider (13) forms cavity for placing blade (1), and blade (1) is installed on blade seat (7), and the upper end of blade (1) is blade opening end, and the lower part is fixedly connected with blade seat (7), the lower part of right slider (3) and left slider (13) is equipped with through -hole (1-2), and is movably installed on limiting seat (6) through fixed shaft (5), limiting seat (6) is installed in guide seat (12), and limiting seat (6) below is equipped with spring (11), spring (11) is sleeved on blade seat (7), and the both ends of spring (11) are respectively with the bottom of limiting seat (6), the upper portion of base (8) abut.

2. The duckbill check valve piercing tool of claim 1, wherein, Blade seat (7) is installed on base (8) with second fixed screw (10);Guide seat (12) and base (8) are fixed together with first fixed bolt (9).

3. The duckbill check valve piercing tool of claim 1, wherein, Blade (1) middle part is equipped with sliding slot (1-1) and is convenient for fixed shaft (5) to pass through.

4. The duckbill check valve piercing tool of claim 1, wherein, Right slider (3) and left slider (13) fixed shaft (5) upper portion are sleeved with silica gel pipe (4).

5. The duckbill check valve piercing tool of claim 1 or 3, wherein, Fixed shaft (5) passes through the lower part through -hole (1-2) of right slider (3) and left slider (13) and the sliding slot (1-1) of intermediate blade, connects the lower part of right slider (3) and left slider (13) with limiting seat (6), and the highest position of right slider (3) and left slider (13) is limited.

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