Suction tube silica gel sealing valve core flanging jig

Abstract

This utility model discloses a fixture for flanging a silicone sealing valve core of a suction catheter, comprising: a push rod having an insertion end that extends into the interior of the sealing valve core, the insertion end having a flared portion with a gradually increasing cross-section extending along the axial direction of the push rod; and a flanging device fitted around the outer periphery of the push rod, facing the insertion end of the push rod, the flanging device having a pressing portion with a gradually decreasing cross-section. This utility model can solve the problems of manually using tweezers to flanging and covering the sealing valve core onto the valve seat opening, which easily leads to scratches on the sealing valve core and low assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of suction tubes, specifically to a suction tube silicone sealing valve core flange fixture. Background Technology

[0002] In the manufacturing process of closed suction catheters, the flanging of the silicone sealing valve core is a crucial step, as the quality of the flanging directly affects the sealing performance and overall usability of the valve core. Currently, the flanging of silicone sealing valve cores is generally done manually. Specifically, the worker first inserts the sealing valve core into the valve seat, with its top protruding from the valve seat opening. Then, using tweezers, the worker manually folds the protruding section of the sealing valve core to cover the outer edge of the valve seat opening. However, because the sharp edges of the tweezers can easily scratch the silicone sealing valve core, there is a high risk of valve core breakage, and it is difficult to ensure the dimensional consistency and shape standardization of each valve core's flanging. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a silicone sealing valve core flange fixture for suction tubes.

[0004] To achieve the above objectives, the technical solution adopted by this utility model includes: a push rod having an insertion end that extends into the interior of the sealing valve core, the insertion end having a flared portion with a gradually increasing cross-section extending along the axial direction of the push rod; and a flanger sleeved on the outer periphery of the push rod, facing the side of the insertion end of the push rod, the flanger having a pressing portion with a gradually decreasing cross-section.

[0005] In the preferred embodiment of the above-mentioned suction tube silicone sealing valve core flanging fixture, a push rod is further included. The push rod is sleeved on the outer periphery of the top rod. The push rod is used to push the flanging device downward along the axial direction, so that the extrusion part of the flanging device enters between the sealing valve core and the flared part, and rolls down the sealing valve core that is opened by the flared part of the top rod.

[0006] In the preferred embodiment of the above-mentioned suction tube silicone sealing valve core flange fixture, the push rod and the flanger are integrally formed.

[0007] In the preferred embodiment of the above-mentioned suction tube silicone sealing valve core flange fixture, the push rod and the flanger are separable. The upper part of the flanger is sleeved on the outer periphery of the push rod, and a stop part is provided on the inner side of the flanger. When the push rod moves down, the flanger can be pushed down through the stop part.

[0008] In the preferred embodiment of the above-mentioned suction catheter silicone sealing valve core flange fixture, the end of the push rod relative to the insertion end is provided with an enlarged portion with a diameter larger than that of the push rod.

[0009] In the preferred embodiment of the above-mentioned suction catheter silicone sealing valve core flange fixture, a base is further included for placing the valve seat and the sealing valve core. The base has a protrusion, and the sealing valve core is placed on the protrusion. The height of the protrusion is configured such that when the valve seat fits the sealing valve core onto the protrusion, the top of the sealing valve core protrudes at least partially from the opening of the valve seat.

[0010] In the preferred technical solution of the above-mentioned suction catheter silicone sealing valve core flange fixture, the top rod and push rod are made of stainless steel.

[0011] In the preferred embodiment of the above-mentioned suction catheter silicone sealing valve core flange fixture, the flanger is made of PVC material with a Shore A hardness of 80A.

[0012] The beneficial effects of this utility model are that, through the cooperative design of the flared part of the push rod and the pressing part of the flanging device, the pressing part of the flanging device can enter between the flared part and the sealing valve core. As the flanging device moves down, the part of the sealing valve core that extends out of the valve seat can be flanged and cover the outer periphery of the valve seat opening, thereby realizing the assembly of the sealing valve core and the valve seat. By setting the pressing part of the flanging device to an arc surface, the damage to the sealing valve core during flanging can be effectively reduced, and the assembly quality of the sealing valve core and the valve seat can be improved. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a sealing valve core; Figure 2 A schematic diagram showing the sealing valve core passing through the valve seat opening; Figure 3 Front view of the sealing valve core and valve seat placed on the base; Figure 4 A cross-sectional view of the sealing valve core and valve seat placed on the base; Figure 5 This is an exploded view of the present invention; Figure 6 A sectional view of the assembled push rod, push rod, and flange; In the picture: Sealing valve core 101, valve seat 102, and port 1021; Top rod 1, insertion end 11, flared part 111, limiting end 12, diameter enlargement part 13, flanging device 2, extrusion part 21, stop part 22, push rod 3, base 4, protrusion part 41. Detailed Implementation

[0014] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0015] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "front," and "rear," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] like Figures 1 to 6 As shown, the suction tube silicone sealing valve core flanging fixture of this utility model includes: a top rod 1, having an insertion end 11 extending into the sealing valve core 101, the insertion end 11 having a flared portion 111 with a gradually increasing cross-section extending along the axial direction of the top rod 1; and a flanging device 2, sleeved on the outer periphery of the top rod 1, facing the side of the insertion end 11 of the top rod 1, the flanging device 2 having a compression portion 21 with a gradually decreasing cross-section.

[0018] See Figures 1 to 3 The suction catheter is constructed including a negative pressure control valve seat 102. The opening 1021 of the negative pressure control valve seat 102 needs to be fitted with a sealing valve core 101. During installation, the sealing valve core 101 is usually manually passed through the negative pressure control valve seat 102, so that at least part of the sealing valve core 101 is exposed outside the opening 1021 of the negative pressure control valve seat 102. Then, the part of the sealing valve core 101 exposed outside the opening 1021 of the negative pressure control valve seat 102 is folded over by manual forceps so that the part can cover the outer periphery of the opening 1021 of the negative pressure control valve seat 102.

[0019] See Figure 5 , Figure 6 The push rod 1 has an insertion end 11 and a limiting end 12. From the limiting end 12 toward the insertion end 11, the insertion end 11 of the push rod 1 has a flared portion 111 with a gradually decreasing cross-section. The flanging device 2 is sleeved on the outer periphery of the push rod 1. The flanging device 2 can slide axially on the push rod 1. The flanging device 2 has a pressing portion 21 on the side near the insertion end 11 of the push rod 1. From the insertion end 11 of the push rod 1 to the limiting end 12, the cross-section of the pressing portion 21 gradually increases.

[0020] When the port of the sealing valve core 101 is flanged over the opening 1021 of the negative pressure control valve seat 102, the sealing valve core 101 is first passed through the opening 1021 of the valve seat 102 from bottom to top, so that the top of the sealing valve core 101 is at least partially above the opening 1021 of the valve seat 102. Then, the assembled push rod 1 and flanger 2 are aligned with the sealing valve core 101, and the push rod 1 and flanger 2 are moved downwards, so that the insertion end 11 of the push rod 1 enters into the sealing valve core 101. The flared portion 111 of the insertion end 11 flares the portion of the sealing valve core 101 that protrudes from the opening 1021 of the valve seat 102, so that the inner diameter of this portion of the sealing valve core 101 is larger than that of the opening 1021 of the valve seat 102. After adjusting the outer diameter, the flanger 2 is pushed down relative to the push rod 1, so that the extrusion part 21 of the flanger 2 enters between the sealing valve core 101 and the flared part 111 of the push rod 1. Since the conical arc surface of the extrusion part 21 can gradually enter between the sealing valve core 101 and the flared part 111 of the push rod 1, the distance between the sealing valve core 101 and the flared part 111 of the push rod 1 is gradually increased. While the sealing valve core 101 is pushed and flanged by the extrusion part 21, the hard damage to the sealing valve core 101 made of silicone material is reduced, the risk of stress concentration causing the sealing valve core 101 to crack is reduced, and the quality of the sealing valve core 101 flanged down and covering the periphery of the valve seat 102 opening 1021 is improved.

[0021] In one or more embodiments, a push rod 3 is also included. The push rod 3 is sleeved on the outer periphery of the push rod 1. The push rod 3 is used to push the flanging device 2 downward along the axial direction, so that the pressing part 21 of the flanging device 2 enters between the sealing valve core 101 and the flared part 111, so that the sealing valve core 101, which is opened by the flared part 111 of the push rod 1, is rolled up and covers the opening 1021 of the valve seat 102.

[0022] See Figures 3 to 6 The push rod 3 is sleeved outside the top rod 1. The push plate can push the flanging device 2 to slide vertically on the top rod 1, so that the pressing part 21 of the flanging device 2 enters the flared part 111 of the top rod 1. Specifically, when the port of the sealing valve core 101 is flanged and covered with the opening 1021 of the negative pressure control valve seat 102, the pressing part 21 of the flanging device 2 enters between the flared part 111 of the top rod 1 and the sealing valve core 101 by pushing the push plate down. This causes the part of the sealing valve core 101 that extends out of the opening 1021 of the valve seat 102 to be pushed by the pressing part 21 of the flanging device 2 and flanged and covered with the outer periphery of the opening 1021 of the valve seat 102. By using the push rod 3 to push the flanging device 2, the user can easily control the movement of the flanging device 2 on the top rod 1, thereby improving the assembly efficiency of the sealing valve core 101 and the valve seat 102.

[0023] In one or more embodiments, the push rod 3 and the flanging device 2 are integrally formed. This arrangement ensures the consistency of movement between the push rod 3 and the flanging device 2, making it easier for the user to control the axial sliding of the flanging device 2 on the top rod 1 via the push rod 3.

[0024] In one or more embodiments, the push rod 3 and the flanging device 2 can be separated. The upper part of the flanging device 2 is sleeved on the outer periphery of the push rod 3, and the inner side of the flanging device 2 is provided with a stop part 22. When the push rod 3 moves down, the flanging device 2 can be pushed down through the stop part 22.

[0025] See Figure 5 , Figure 6 When the push rod 3 and the flanging device 2 are two separable parts, the flanging device 2 is sleeved on the push rod 3. The inner side of the flanging device 2 is provided with a circular stop 22, so that when the push rod 3 moves up and down with the top rod 1, the bottom end of the push rod 3 can push against the stop 22, thereby controlling the flanging device 2 to move vertically downward relative to the top rod 1. With this setting, when replacing the flanging device 2, only the flanging device 2 needs to be replaced without replacing the push rod 3, thus reducing the replacement cost.

[0026] In one or more embodiments, the end of the push rod 1 relative to the insertion end 11 is provided with an enlarged portion 13 with a diameter larger than that of the push rod 1.

[0027] See Figure 5 , Figure 6 The push rod 1 has an insertion end 11 and a limiting end 12. The limiting end 12 is provided with a diameter enlargement part 13. The outer diameter of the diameter enlargement part 13 is larger than the diameter of the push rod 1 and larger than the inner diameter of the flanging device 2. By providing the diameter enlargement part 13 at the top limiting end 12, the push rod 3 and the flanging device 2 can be effectively limited, so that the flanging device 2 can only be moved out through the insertion end 11 of the push rod 1, ensuring the stability of the connection between the push rod 1, the push rod 3 and the flanging device 2.

[0028] In other possible embodiments, a first magnet is mounted on the bottom surface of the enlarged diameter portion 13, and a second magnet is mounted on the top surface of the push rod 3. The first magnet and the second magnet are magnetically attracted to each other. With this arrangement, when the push rod 3 is not pushed, it can be attracted to the bottom surface of the enlarged diameter portion 13 by means of the magnetic force of the first magnet and the second magnet. When the flanging fixture is not used, the possibility of the push rod 3, the flanging device 2, and the push rod 1 separating can be reduced.

[0029] In one or more embodiments, a base 4 is also included for placing the valve seat 102 and the sealing valve core 101. The base 4 has a protrusion 41 on which the sealing valve core 101 is placed. The height of the protrusion 41 is configured such that when the valve seat 102 sleeves the sealing valve core 101 on the protrusion 41, the top of the sealing valve core 101 protrudes at least partially from the opening 1021 of the valve seat 102.

[0030] See Figures 3 to 5The base 4 is disc-shaped, with a cylindrical protrusion 41 at the center of its top surface. The protrusion 41 is used to place the sealing valve core 101, and the base 4 is used to place the valve seat 102. When the sealing valve core 101 is placed on the protrusion 41 and the sealing valve seat 102 is placed on the base 4, the sealing valve core 101 passes through the valve seat 102 and at least partially extends out of the valve seat 102 opening 1021. This arrangement allows the user to easily fold the sealing valve core 101 using the push rod 1, push rod 3, and flanging device 2, improving the assembly efficiency of the sealing valve core 101 and valve seat 102.

[0031] In one or more embodiments, the push rod 1 and the push rod 3 are made of stainless steel.

[0032] In one or more embodiments, the flanging device 2 is made of PVC material with a Shore A hardness of 80A.

[0033] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A fixture for flanged silicone sealing valve core of a suction catheter, characterized in that, include: The push rod has an insertion end that extends into the interior of the sealing valve core, the insertion end having a flared portion with a gradually increasing cross-section extending along the axial direction of the push rod; A flanging device is fitted around the outer periphery of the top rod, facing the side of the top rod insertion end, and the flanging device has a pressing section with a gradually decreasing cross-section.

2. The suction catheter silicone sealing valve core flange fixture according to claim 1, characterized in that: It also includes a push rod, which is sleeved on the outer periphery of the top rod. The push rod is used to push the flanging device downward along the axial direction, so that the extrusion part of the flanging device enters between the sealing valve core and the flared part, and rolls down the sealing valve core that has been opened by the flared part of the top rod.

3. The suction catheter silicone sealing valve core flange fixture according to claim 2, characterized in that: The push rod and the flanging device are integrally formed.

4. The suction catheter silicone sealing valve core flange fixture according to claim 2, characterized in that: The push rod is separable from the flanging device. The upper part of the flanging device is sleeved on the outer periphery of the push rod. The inner side of the flanging device is provided with a stop part. When the push rod moves down, it can push the flanging device down through the stop part.

5. The suction catheter silicone sealing valve core flange fixture according to any one of claims 1-4, characterized in that: The end of the push rod relative to the insertion end is provided with an enlarged portion with a diameter larger than that of the push rod.

6. The suction catheter silicone sealing valve core flange fixture according to claim 1, characterized in that: It also includes a base for placing a valve seat and a sealing valve core, the base having a protrusion on which the sealing valve core is placed, the height of the protrusion being configured such that when the valve seat fits the sealing valve core onto the protrusion, the top of the sealing valve core at least partially protrudes from the opening of the valve seat.

7. The suction catheter silicone sealing valve core flange fixture according to claim 2, characterized in that: The push rod and push rod are made of stainless steel.

8. The suction catheter silicone sealing valve core flange fixture according to claim 1, characterized in that: The flanging device is made of PVC material with a Shore A hardness of 80A.

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