A sealing core flanging device for sputum suction tube

Abstract

This utility model discloses a sealing core flanging device for a suction catheter, comprising: a base having a limiting groove for positioning a valve seat, the bottom of the limiting groove being provided with a column for supporting the sealing core, the height of the column being configured such that when the valve seat is placed in the limiting groove, the top of the sealing core at least partially protrudes from the valve seat opening; and a flanging module including a gripper structure having at least two gripping arms evenly distributed around its central axis, configured to move vertically to extend into the sealing core and to open radially to expand the sealing core. This utility model can solve the problems of traditional sealing core and negative pressure control valve seat assembly methods, which are prone to scratching the sealing core, low assembly efficiency, and low assembly consistency.

Description

Technical Field

[0001] This utility model relates to the field of suction tubes, specifically to a sealing core flange device for suction tubes. Background Technology

[0002] In the production process of disposable closed suction catheters, the assembly of the negative pressure control valve seat and the sealing core is one of the key processes. The steps include accurately assembling the silicone sealing core to the valve seat opening and using a flanging process to make the protruding part of the sealing core cover the outer periphery of the valve seat opening to achieve the sealing function.

[0003] Currently, the industry generally uses manual operation: workers need to first insert the sealing core into the valve seat, so that its top part protrudes from the valve seat opening, and then use tweezers to manually fold the protruding section of the sealing core so that it covers the outer edge of the valve seat opening; however, because the sharp edges of the tweezers can easily scratch the silicone sealing core, there is a high risk of sealing core damage, and manual folding of the sealing core results in low consistency and low assembly efficiency between the sealing core and the negative pressure control valve seat. Utility Model Content

[0004] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a sealing core flange device for suction tubes.

[0005] To achieve the above objectives, the technical solution adopted by this utility model includes: a base having a limiting groove for positioning a valve seat, wherein the bottom of the limiting groove is provided with a column for supporting a sealing core, and the height of the column is configured such that when the valve seat is placed in the limiting groove, the top of the sealing core at least partially protrudes from the valve seat opening; and a flange module including a gripper structure having at least two gripping arms evenly distributed around its central axis, and configured to be able to move vertically to extend into the sealing core, and to be able to open and close radially to expand the sealing core.

[0006] This application employs a method of placing the sealing core on the column and the valve seat in the limiting groove of the base, so that the length of the sealing core extending out of the valve seat opening is a fixed value, effectively ensuring the consistency of the length of the flanged part of the sealing core and improving the consistency of the sealing core and the valve seat after assembly; by using a claw structure with multiple clamping arms to flange the sealing core, the assembly efficiency of the sealing core and the valve seat can be effectively improved, and damage to the flanged part of the sealing core can be reduced.

[0007] In the preferred embodiment of the above-mentioned sealing core flange device for suction catheter, a fixing module is further included for pressing and fixing the valve seat in the limiting groove of the base. The fixing module includes at least a pressure plate for pressing the top surface of the valve seat.

[0008] In the preferred embodiment of the above-mentioned sealing core flange device for suction catheters, the pressure plate has a through-hole clearance hole, and when the pressure plate presses the valve seat, the clearance hole is located directly above the valve seat opening.

[0009] In the preferred embodiment of the above-mentioned sealing core flange device for suction tubes, the fixing module further includes a first driving component for driving the pressure plate to move vertically up and down.

[0010] In the preferred embodiment of the above-mentioned sealing core flange device for suction catheters, the gripper structure is controlled to move vertically by the second driving component.

[0011] In the preferred embodiment of the above-mentioned sealing core flange device for suction catheters, the gripper structure has four gripping arms evenly distributed around its central axis.

[0012] In the preferred embodiment of the above-mentioned sealing core flange device for suction tubes, each of the clamping arms is coated with a polytetrafluoroethylene coating.

[0013] In the preferred embodiment of the above-mentioned sealing core flange device for suction catheters, the diameter of the column is configured such that when the valve seat is placed in the limiting groove, the inner surface of the valve seat contacts the circumferential side of the column. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the valve seat; Figure 2 This is a schematic diagram of the sealing core; Figure 3 A schematic diagram showing the sealing core passing through the valve seat; Figure 4 This is the front view of the present invention; Figure 5 This is a schematic diagram of the gripper structure; Figure 6 This is a schematic diagram of the base and fixing module; Figure 7 This is a schematic diagram of the base; Figure 8 A schematic diagram showing the valve seat and sealing core mounted on the base; In the figure: base 1, limiting groove 11, column 12, valve seat 2, opening 21, sealing core 3, gripper structure 4, clamping arm 41, pressure plate 51, clearance hole 511, first driving component 52, second driving component 6. Detailed Implementation

[0015] 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.

[0016] 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.

[0017] 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.

[0018] like Figures 1 to 8 As shown, the sealing core 3 flange device for suction tube of this utility model includes: a base 1 with a limiting groove 11 to position the valve seat 2, and a column 12 for supporting the sealing core 3 at the bottom of the limiting groove 11. The height of the column 12 is configured such that when the valve seat 2 is placed in the limiting groove 11, the top of the sealing core 3 at least partially protrudes from the opening 21 of the valve seat 2; and a flange module including a gripper structure 4, the gripper structure 4 having at least two gripping arms 41 evenly distributed along its central axis, and configured to be able to move vertically to extend into the sealing core 3, and to be able to open and close radially to open the sealing core 3.

[0019] See Figures 1 to 3 The suction catheter is constructed including a negative pressure control valve seat 2. The opening 21 of the negative pressure control valve seat 2 needs to be fitted with a sealing core 3. During installation, the sealing core 3 is usually inserted manually through the negative pressure control valve seat 2, so that at least part of the sealing core 3 is exposed outside the opening 21 of the negative pressure control valve seat 2. Then, the part of the sealing core 3 that is exposed outside the opening 21 of the negative pressure control valve seat 2 is folded over manually with tweezers so that the part can cover the outer periphery of the opening 21 of the negative pressure control valve seat 2.

[0020] See Figure 7 , Figure 8 A limiting groove 11 is provided on the base 1. The cross-section of the limiting groove 11 is approximately L-shaped to fit the shape of the valve seat 2. The depth of the limiting groove 11 is less than the height of the valve seat 2, so that when the valve seat 2 is placed in the limiting groove 11 of the base 1, the top of the valve seat 2 is higher than the top surface of the base 1. A column 12 is provided on the bottom surface of the limiting groove 11 of the base 1. The column 12 is used to place the sealing core 3. After the sealing core 3 is placed on the column 12, the top of the sealing core 3 is higher than the top surface of the base 1.

[0021] See Figure 4 , Figure 5 The flanging module is used to fold the part of the sealing core 3 that protrudes from the opening 21 of the valve seat 2. Utilizing the properties of silicone material, the folded part of the sealing core 3 can cover the outer periphery of the opening 21 of the valve seat 2. The flanging module includes a gripper structure 4. The gripper structure 4 includes at least two gripping arms 41 and a power component that drives the gripping arms 41 to approach or move away from the central axis of the gripper structure 4. The power component can be a cylinder or other air source controlled component. The specific type of power component is not specifically limited.

[0022] Specifically, when the port of the sealing core 3 is flanged and wrapped around the opening 21 of the negative pressure control valve seat 2, the sealing core 3 is first placed vertically on the column 12 of the base 1, and then the valve seat 2 is placed in the limiting groove 11 of the base 1, so that the sealing core 3 can pass through the valve seat 2 and extend out through the opening 21. Then, the control jaw structure 4 is moved down, so that multiple clamping arms 41 in the closed state extend into the sealing core 3, and the bottom end of the clamping arm 41 is controlled to be higher than the top end of the opening 21 of the valve seat 2. The multiple clamping arms 41 open synchronously to expand the top opening of the sealing core 3, so that the top opening of the sealing core 3 is larger than the outer diameter of the opening 21 of the valve seat 2, and the inner surface of the clamping arm 41 is located outside the opening 21 of the valve seat 2. Then, the control jaw structure 4 is moved down as a whole, because the sealing core 3 is closed. The portion of the sealing core 3 at the opening 21 of the valve seat 2 is restricted by the opening 21, allowing the portion of the sealing core 3 made of silicone material that extends out of the opening 21 of the valve seat 2 to be effectively folded over and then cover the outer periphery of the opening 21 of the valve seat 2. This application adopts the method of placing the sealing core 3 on the column 12 and placing the valve seat 2 in the limiting groove 11 of the base 1, so that the length of the sealing core 3 extending out of the opening 21 of the valve seat 2 is a fixed value, effectively ensuring the consistency of the length of the folded portion of the sealing core 3, and improving the consistency of the sealing core 3 and the valve seat 2 after assembly. In addition, by using the gripper structure 4 with multiple gripping arms 41 to fold the sealing core 3, the assembly efficiency of the sealing core 3 and the valve seat 2 can be effectively improved, and damage to the folded portion of the sealing core 3 can be reduced.

[0023] In one specific embodiment, the lower surface of each clamping arm 41 is configured to be smooth and continuous; this configuration avoids the problem of scratching the sealing core 3 due to burrs or right angles on the clamping arm 41 when it contacts and presses the surface of the sealing core 3.

[0024] In one or more embodiments, a fixing module is further included for pressing and fixing the valve seat 2 within the limiting groove 11 of the base 1. The fixing module includes at least a pressure plate 51 for pressing the top surface of the valve seat 2. The pressure plate 51 has a through clearance hole 511, which is located directly above the opening 21 of the valve seat 2 when the pressure plate 51 presses the valve seat 2. The fixing module also includes a first driving component 52 for driving the pressure plate 51 to move vertically up and down.

[0025] See Figure 4 , Figure 6 The fixing module includes a first driving component 52 and a pressure plate 51 that is driven to rise and fall by the first driving component 52. The first driving component 52 can be a bracket and a cylinder mounted on the bracket. The extended shaft end of the cylinder is connected to the pressure plate 51. By driving the pressure plate 51 to rise and fall by the cylinder, the pressure plate 51 can press the valve seat 2 onto the base 1. In order to improve the pressing effect of the pressure plate 51 on the valve seat 2, the top surface of the valve seat 2 needs to be in contact with the bottom surface of the pressure plate 51. In this application, by opening a clearance hole 511 at the corresponding position of the pressure plate 51, the pressure plate 51 can press the top periphery of the valve seat 2 while exposing the opening 21 of the valve seat 2, so as to facilitate the opening and closing of the clamping arm 41 of the gripper structure 4.

[0026] In one or more embodiments, the gripper structure 4 is controlled to move vertically by the second driving component 6.

[0027] See Figure 4 The second drive component 6 includes a frame, a cylinder mounted on the frame, a slider mounted on the frame via a slide rail, and a gripper structure 4 mounted on the slider. When it is necessary to control the lifting and lowering of the gripper cylinder, the cylinder controls the slider to lift and lower on the frame, and the gripper structure 4 lifts and lowers synchronously with the slider.

[0028] In one possible implementation, a third driving component is mounted on the slider to drive the gripper structure 4 to rotate circumferentially. The third driving component can be a rotary cylinder or a servo motor; the type of the third driving component is not specifically limited and can be selected according to actual production needs. By driving the gripper structure 4 to rotate circumferentially through the third driving component, the multiple gripping arms 41 in the open state can rotate around the central axis of the gripper structure 4, thereby smoothing the flanged portion of the sealing core 3.

[0029] In one or more embodiments, the gripper structure 4 has four gripping arms 41 evenly distributed around its central axis. By providing four sets of gripping arms 41, the opening of the sealing core 3 can be made closer to a circle when it is enlarged, ensuring the success rate of the top edge of the sealing core 3 when it is turned over.

[0030] In one or more embodiments, each clamping arm 41 surface is coated with a polytetrafluoroethylene (PTFE) coating. The PTFE coating has a certain self-lubricating effect, which can reduce the friction between the surface of the clamping arm 41 and the surface of the sealing core 3, and reduce the wear on the surface of the sealing core 3.

[0031] In one or more embodiments, the diameter of the column 12 is configured such that when the valve seat 2 is placed in the limiting groove 11, the inner surface of the valve seat 2 contacts the circumferential side of the column 12.

[0032] See Figure 7 , Figure 8 The column 12 is positioned at the center of the bottom surface of the limiting groove 11 of the base 1. The distance between the side of the column 12 and the vertical surface of the limiting groove 11 is close to the wall thickness of the valve seat 2. When the valve seat 2 is placed in the limiting groove, the valve seat 2 covers the column 12. At the same time, the inner wall of the valve seat 2 can abut against the outer peripheral wall of the column 12. This arrangement can further improve the positioning of the valve seat 2 and improve the stability of the sealing core 3 when assembling with the valve seat 2.

[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 sealing core flanging apparatus for sputum suction tubes, characterized by, include: The base has a limiting groove for positioning the valve seat, and the bottom of the limiting groove is provided with a column for supporting the sealing core. The height of the column is configured such that when the valve seat is placed in the limiting groove, the top of the sealing core at least partially protrudes from the valve seat opening. The flange module includes a gripper structure having at least two gripping arms evenly distributed along its central axis and configured to move vertically to extend into the sealing core and to open radially to open the sealing core.

2. The sealing core flanging apparatus for sputum suction tubes according to claim 1, characterized by: It also includes a fixing module for pressing and fixing the valve seat within the limiting groove of the base, the fixing module including at least a pressure plate for pressing the top surface of the valve seat.

3. The sealing core flanging apparatus for sputum suction tubes according to claim 2, characterized by: The pressure plate has a through-hole for clearance, and when the pressure plate presses the valve seat, the clearance hole is located directly above the valve seat opening.

4. The sealing core flanging apparatus for sputum suction tubes according to claim 2 or 3, characterized in that: The fixing module also includes a first driving component for driving the pressure plate to move vertically up and down.

5. The sealing core flanging apparatus for sputum suction tubes according to claim 1, characterized by: The gripper structure is controlled to move vertically by the second driving component.

6. The sealing core flange device for suction catheters according to claim 1, characterized in that: The gripper structure has four gripping arms evenly distributed around its central axis.

7. The sealing core flange device for suction catheters according to claim 1, characterized in that: Each of the clamping arms is coated with a polytetrafluoroethylene coating.

8. The sealing core flange device for suction catheters according to claim 1, characterized in that: The diameter of the column is configured such that when the valve seat is placed in the limiting groove, the inner surface of the valve seat contacts the circumferential side of the column.

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