A partitioned film-coated distributor for centrifugal glue injection

Abstract

The utility model provides a kind of partitioning film-coated distributor for centrifugal glue injection, which can replace traditional upper cover by welding film, reduce production cost and improve work efficiency, it includes distributor base and welding film;Distributor base is the center symmetry polygonal star groove body of top opening, the number of corner part is the even number of greater than 2, and the end of each corner part is rounded and downwardly extended to form glue pipe;Adjacent corner parts are connected by glue blocking piece, and all glue blocking pieces surround N-sided polygon central cavity, wherein N=2×corner part number;Corner part area and adjacent glue blocking piece form shunt cavity, and glue pipe is located at the horizontal circular glue outlet surface at the end of shunt cavity;Glue cone surface is provided at the bottom of central cavity, and the bottom of central cavity is connected with horizontal circular glue outlet surface by convex arc surface transition connection;Welding film is composed of the same number of independent film pieces as shunt cavity, each film piece covers the top opening of single shunt cavity, and is combined with distributor base by fixed connection mode.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and more specifically, to a partitioned film-coated dispenser for centrifugal dispensing. Background Technology

[0002] The dialyzer centrifugal dispensing device is a key piece of equipment in the medical device technology field, specifically used for the precise dispensing of polyurethane adhesive into dialyzer semi-finished products. In the dialyzer production process, this dispenser uses high-speed centrifugal force to evenly distribute the adhesive to both ends of the semi-finished dialyzer, ensuring reliable adhesion of the dialyzer's sealing cavity. This process directly affects the blood sealing performance and lifespan of the dialyzer, and is a core aspect of quality control in medical device manufacturing. While the industry currently widely adopts automated dispensing systems, structural design flaws in the dispenser itself remain a key factor leading to decreased product yield and frequent downtime for maintenance.

[0003] According to the publicly available patent document CN202323156063.X, a centrifugal gel dispenser structure for dialyzers is described. Traditional centrifugal gel dispensers employ a two-component interlocking structure, mainly composed of a dispenser top cover and a dispenser base. The top cover and base are traditionally assembled through the interlocking of positioning grooves and mating ribs. This structure has revealed the following problems during long-term use: 1. The top cover is excessively folded and deformed during repeated disassembly and cleaning, resulting in a gap of 0.1-0.3mm between the mating rib and the positioning groove. Under the action of centrifugal force, the glue seeps out from the gap, and the glue leakage rate increases with the number of uses, causing material fatigue failure. 2. The top cover and base lack a self-locking mechanism. When the rotation speed exceeds 2500 rpm, the centrifugal force overcomes the interlocking friction, causing high-frequency micro-vibration between the top cover and the base, which further aggravates glue leakage. 3. The solidified adhesive leaves rubber residue on the inner wall of the base, requiring manual disassembly and cleaning, with each maintenance taking more than 30 minutes; the top cover and base are a paired structure, and if any component is damaged, such as the deformation of the positioning groove of the top cover, the entire dispenser needs to be replaced, resulting in a high material waste rate. 4. The top cover is designed as a single piece, with a large proportion of the area not being covered, resulting in material waste. Utility Model Content

[0004] The purpose of this invention is to provide a partitioned film-coated dispenser for centrifugal glue dispensing, which can replace the traditional top cover with a welded film, thereby reducing production costs and improving work efficiency.

[0005] The embodiments of this utility model are implemented as follows: A partitioned film-coated dispenser for centrifugal dispensing includes a dispenser base and a welding film; The dispenser base is a centrally symmetrical polygonal star-shaped groove with an open top. The number of corners is an even number greater than 2. Each corner has a rounded end and extends downward to form a lower rubber tube. Adjacent corners are connected by baffles, and all baffles form an N-sided central cavity, where N = 2 × the number of corners; A flow divider cavity is formed between the corner area and the adjacent baffle plate, and the lower glue tube is located at the horizontal circular glue outlet at the end of the flow divider cavity; The bottom of the central cavity is provided with a lower adhesive conical surface, and the bottom of the central cavity is connected to the horizontal circular adhesive outlet surface through a raised arc surface. The welding membrane consists of the same number of independent diaphragms as the number of shunt chambers. Each diaphragm covers the top opening of a single shunt chamber and is connected to the distributor base by a fixed connection.

[0006] In a preferred embodiment of the present invention, the edge of the welding film extends to the top plane of the baffle, and the overlap width between the edge of the film and the top of the baffle is 0.5-2mm.

[0007] In a preferred embodiment of this utility model, the above-mentioned fixed connection method is thermal welding, and the welding area is located at the edge of the channel of the diversion cavity.

[0008] In a preferred embodiment of the present invention, the outer wall of the baffle sheet is provided with a cylindrical positioning groove, and the cylindrical positioning groove and the baffle sheet are reinforcedly connected by a triangular connecting part.

[0009] In a preferred embodiment of this utility model, radial reinforcing ribs are connected between the lower adhesive conical surface and the baffle plate, and the height of the connection end between the reinforcing rib and the baffle plate is greater than the height of the connection end with the lower adhesive conical surface.

[0010] In a preferred embodiment of the present invention, an venting groove is provided axially on the lower hose body, the depth of the venting groove is 1 / 3 to 1 / 2 of the wall thickness, and the groove length extends at least to 2 / 3 of the total length of the lower hose.

[0011] In a preferred embodiment of the present invention, the above-mentioned diversion cavity is a triangular groove with an arc-shaped bottom and rounded corners at the top.

[0012] In a preferred embodiment of this utility model, a positioning buckle is provided at the bottom of the above-mentioned diversion cavity. The positioning buckle is located on the outer wall of the lower tube and has an elastic barb structure.

[0013] The beneficial effects of this utility model embodiment are: 1. Improved production efficiency: The split-type welded membrane and base are assembled semi-automatically via hot welding, replacing the traditional manual fitting process of the cover plate and base, eliminating the time-consuming alignment of the grooves, and significantly improving the assembly time per piece; at the same time, the pre-processing required for the traditional cover plate, such as cleaning the rubber and fitting inspection, is completely eliminated, reducing manual intervention on the production line by 90%; 2. Upgraded service life and sealing performance: The fusion strength between the welding film and the base is greater than that of the traditional interlocking structure, completely avoiding the risk of glue leakage caused by plastic deformation. The service life is increased from 500 dispensing cycles of the traditional structure to more than 5,000 cycles. At the same time, after wear, only the old film needs to be removed and a new film needs to be re-welded. The base can be reused ≥100 times, while the traditional one-piece cover needs to be replaced as a whole after damage. 3. Overall costs have decreased, with significant reductions in unit material costs, maintenance costs, and downtime losses. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of one of the flow distribution chambers of the distributor in an embodiment of the present invention, without the welding film covering it; Figure 2 This is a three-dimensional structural diagram of a partitioned film-coated dispenser for centrifugal dispensing according to an embodiment of the present invention; Icons: Dispenser base 1; lower glue tube 11; glue baffle 12; flow divider cavity 13; horizontal circular glue outlet 14; cylindrical positioning groove 15; triangular connecting part 16; lower glue conical surface 17; radial reinforcing ribs 18; positioning buckle 19; welding film 2. Detailed Implementation

[0016] 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, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to 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. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] First Embodiment Please refer to Figure 1 and 2 This embodiment provides a partitioned film-coated dispenser for centrifugal dispensing, including a dispenser base 1 and a welding film 2, using a split welding film 2 instead of a traditional one-piece top cover.

[0023] The distributor base 1 is a centrally symmetrical polygonal star-shaped groove with an open top. The number of corners is an even number greater than 2. Each corner has a rounded end and extends downward to form a lower glue tube 11. Adjacent corners are connected by baffles 12. All baffles 12 form an N-sided central cavity, where N = 2 × the number of corners. A diversion cavity 13 is formed between the corner area and the adjacent baffles 12. The lower glue tube 11 is located at the horizontal circular glue outlet surface 14 at the end of the diversion cavity 13.

[0024] In this embodiment, the distributor base 1 is a four-pointed star-shaped groove, with four baffles 12, and the central cavity is an octagonal cavity. The diversion cavity 13 is a triangular groove with an arc-shaped bottom and rounded corners at the top.

[0025] The outer wall of the baffle plate 12 is provided with a cylindrical positioning groove 15. The cylindrical positioning groove 15 and the baffle plate 12 are reinforced by a triangular connecting part 16 to strengthen the connection point of the cylindrical positioning groove 15 and improve the torsional stiffness.

[0026] The bottom of the central cavity is provided with a lower adhesive conical surface 17. The bottom of the central cavity is connected to the horizontal circular adhesive outlet surface 14 through a raised arc surface, eliminating flow dead zones and increasing the adhesive flow rate by 30% while avoiding the generation of air bubbles. In addition, the depth of the central cavity is greater than the depth of the diversion cavity 13, specifically the horizontal circular adhesive outlet surface 14 is located at 1 / 2 of the depth of the central cavity.

[0027] A radial reinforcing rib 18 is connected between the lower adhesive conical surface 17 and the baffle plate 12. The height of the connection end between the reinforcing rib and the baffle plate 12 is greater than that between the connection end with the lower adhesive conical surface 17. This is used to improve the bending strength of the baffle plate 12 and help the adhesive to be evenly distributed to the four distribution cavities 13.

[0028] The welding diaphragm 2 is composed of the same number of independent diaphragms as the flow divider cavities 13. Each diaphragm covers the top opening of a single flow divider cavity 13 and is connected to the distributor base 1 by a fixed connection. In this embodiment, the fixing method uses thermal welding, and the welding area is located at the edge of the groove of the flow divider cavity 13.

[0029] The use of a split welding membrane 2 avoids manual assembly of the top cover and base, improving work efficiency; the welding membrane 2 adopts a hot welding process, which can extend the service life of the base and prevent glue leakage; the base can be reused, reducing costs, and even if the welding membrane 2 is replaced, the cost of the welding membrane 2 is less than the cost of the integrated top cover, thus reducing the material cost and maintenance cost of a single component.

[0030] The edge of the welding membrane 2 extends to the top plane of the baffle 12, and the overlap width between the edge of the membrane and the top of the baffle 12 is 0.5-2mm, which is used to prevent centrifugal peeling.

[0031] The lower hose 11 has an axially formed venting groove. The depth of the venting groove is 1 / 3 to 1 / 2 of the wall thickness, and the groove length extends to at least 2 / 3 of the total length of the lower hose 11 to ensure gas discharge efficiency and avoid hose blockage.

[0032] The bottom of the diversion chamber 13 is provided with a positioning buckle 19, which is located on the outer wall of the lower tube 11 and has an elastic barb structure. The elastic barb positioning buckle 19 forms a three-point clamping on the outer wall of the lower tube 11. With the bidirectional locking of the cylindrical positioning groove 15, the dialyzer shaking is completely eliminated and the overflow rate is reduced to below 0.01%.

[0033] This specification describes examples of embodiments of the present invention, but does not imply that these embodiments illustrate and describe all possible forms of the present invention. It should be understood that the embodiments in the specification can be implemented in various alternative forms. The drawings are not necessarily drawn to scale; some features may be enlarged or reduced to show details of specific components. The specific structural and functional details disclosed should not be construed as limiting, but merely as a representative basis for teaching those skilled in the art to implement the present invention in various forms. Those skilled in the art will understand that multiple features illustrated and described with reference to any of the drawings can be combined with features illustrated in one or more other drawings to form embodiments not explicitly illustrated or described. The illustrated combinations of features provide representative embodiments for typical applications. However, various combinations and variations of features consistent with the teachings of the present invention may be used as needed for specific applications or implementations.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A partitioned film-coated dispenser for centrifugal dispensing, characterized in that, Includes dispenser base and welding membrane; The dispenser base is a centrally symmetrical polygonal star-shaped groove with an open top. The number of corners is an even number greater than 2. Each corner has a rounded end and extends downward to form a lower rubber tube. Adjacent corners are connected by baffles, and all baffles form an N-sided central cavity, where N = 2 × the number of corners; A flow divider cavity is formed between the corner area and the adjacent baffle plate, and the lower glue tube is located at the horizontal circular glue outlet surface at the end of the flow divider cavity; The bottom of the central cavity is provided with a lower adhesive conical surface, and the bottom of the central cavity is connected to the horizontal circular adhesive outlet surface through a raised arc-shaped surface. The welding membrane is composed of the same number of independent membranes as the shunt chambers. Each membrane covers the top opening of a single shunt chamber and is connected to the distributor base by a fixed connection.

2. The partitioned film-coated dispenser for centrifugal dispensing according to claim 1, characterized in that, The edge of the welding film extends to the top plane of the baffle, and the overlap width between the edge of the film and the top of the baffle is 0.5-2mm.

3. The partitioned film-coated dispenser for centrifugal dispensing according to claim 1, characterized in that, The fixed connection method is thermal welding, and the welding area is located at the edge of the channel of the diversion cavity.

4. The partitioned film-coated dispenser for centrifugal dispensing according to claim 1, characterized in that, The outer wall of the baffle is provided with a cylindrical positioning groove, and the cylindrical positioning groove and the baffle are reinforcedly connected by a triangular connecting part.

5. The partitioned film-coated dispenser for centrifugal dispensing according to claim 1, characterized in that, A radial reinforcing rib is connected between the lower adhesive conical surface and the baffle plate, and the height of the connection end between the reinforcing rib and the baffle plate is greater than the height of the connection end with the lower adhesive conical surface.

6. The partitioned film-coated dispenser for centrifugal dispensing according to claim 1, characterized in that, The lower hose has an axially formed venting groove, the depth of which is 1 / 3 to 1 / 2 of the hose wall thickness, and the groove length extends at least to 2 / 3 of the total length of the lower hose.

7. The partitioned film-coated dispenser for centrifugal dispensing according to claim 1, characterized in that, The diversion cavity is a triangular groove with an arc-shaped bottom and rounded corners at the top.

8. The partitioned film-coated dispenser for centrifugal dispensing according to claim 1, characterized in that, The bottom of the diversion cavity is provided with a positioning buckle, which is located on the outer wall of the lower hose and has an elastic barb structure.

Images