Rubber plug transfer nest plate

Abstract

The utility model discloses a rubber plug transfer nest plate which comprises a nest plate body, a plurality of containing barrels used for containing rubber plugs are arranged on the nest plate body, ribs are arranged on the inner walls of the containing barrels in the axial direction, grooves matched with sealing portions of the rubber plugs are formed in the ribs, and the diameter of the bottom of each groove is larger than that of the sealing portion of each rubber plug. The rubber plug has the advantages that the rubber plug is simple and reasonable in structure and convenient to machine, the ribs are axially arranged on the inner wall of the containing cylinder, the grooves matched with the sealing parts of the rubber plug are formed in the ribs, and the contact area between the rubber plug and the inner wall of the containing cylinder is greatly reduced through the ribs, so that the movement resistance of the rubber plug in the containing cylinder is greatly reduced; the arrangement of the groove provides a space for accommodating the sealing part, the sealing part is prevented from being damaged due to long-time extrusion when the rubber plug is placed in the accommodating cylinder, and meanwhile, the rubber plug is limited by the groove, so that the rubber plug cannot fall out of the accommodating cylinder without external force.

Description

Technical Field

[0001] This utility model relates to the field of pre-filled syringe stopper transfer technology, specifically a stopper transfer tray. Background Technology

[0002] Prefilled syringes, as disclosed in patent application (TW202348259A), mainly include a syringe barrel and a rubber stopper. The pharmaceutical manufacturer fills the syringe barrel with drugs under sterile conditions, and then seals and fixes the rubber stopper to the opening of the syringe barrel by a stoppering machine (including manual, semi-automatic and fully automatic machines).

[0003] Pre-filled syringe stoppers, as a standard component, are generally made of rubber or silicone, giving them a certain degree of elasticity. Their structure is as follows: Figure 5 As shown, the lower end of the rubber stopper 2 has a conical structure, and the outer periphery of the rubber stopper 2 is provided with 3 sealing parts 2a, and an inner recess 2b is provided between adjacent sealing parts 2a.

[0004] Currently, during the stoppering process, a nested plate is commonly used to transfer the rubber stopper. The nested plate has several cylindrical tubes. External force is used to force the rubber stopper 2 into the cylindrical tubes for later use (the rubber stopper can be pre-inserted into the nested plate). The friction between the rubber stopper and the inner wall of the cylindrical tubes is used to fix the rubber stopper inside the tubes. The nested plate is then transferred above the syringe barrel filled with medication, and external force is used again to expel the rubber stopper from the cylindrical tubes and insert it into the opening of the syringe barrel. However, the sealing part 2a of the rubber stopper pre-inserted into the nested plate (an important sealing surface for later sealing of the syringe barrel) may deform under long-term pressure, potentially affecting its subsequent sealing performance.

[0005] To overcome the shortcomings of existing nesting plates, the nesting plate structure was improved by setting an annular groove on the inner wall of the receiving cylinder corresponding to the number of sealing parts of the rubber plug. This avoids damage to the sealing parts caused by prolonged compression when the rubber plug is placed in the receiving cylinder. This structure can avoid the problem of long-term deformation of the sealing parts 2a due to pressure. However, during production and use, it was found that this structure has high friction during the rubber plug insertion and extrusion process, which affects the insertion and extrusion efficiency. Therefore, its structure needs further improvement. Utility Model Content

[0006] The purpose of this utility model is to overcome the above-mentioned deficiencies and to disclose to the public a rubber stopper transfer tray that is simple and reasonable in structure, easy to process, and can avoid damage to the sealing part of the rubber stopper.

[0007] The technical solution of this utility model is implemented as follows:

[0008] A rubber stopper transfer nest plate includes a nest plate body, on which a plurality of receiving cylinders for accommodating rubber stoppers are provided. Ribs are axially arranged on the inner wall of the receiving cylinders, and grooves adapted to the sealing part of the rubber stopper are provided on the ribs. The bottom diameter of the groove is larger than the diameter of the sealing part of the rubber stopper.

[0009] Further optimization measures for this technical solution are as follows:

[0010] As an improvement, a guide slope is provided at the upper end of the rib. The guide slope facilitates the insertion of the rubber plug.

[0011] As an improvement, the number of ribs is 4-6, and the 4-6 ribs are evenly distributed on the circumferential surface.

[0012] As an improvement, the width of the ribs is 3-5mm. The width of the ribs should not be too wide, as this will increase the contact area during the insertion and extrusion of the rubber stopper, leading to increased resistance.

[0013] As an improvement, the lower end of the rib is provided with a downward slope. The downward slope facilitates the extrusion of the rubber stopper.

[0014] As an improvement, the upper end of the receiving cylinder transitions to the nest plate body via a guide surface.

[0015] As an improvement, the guide surface has a tapered structure.

[0016] As an improvement, the nest plate body and the receiving cylinder are integrated into one structure.

[0017] As an improvement, the container cylinders are arranged in a matrix.

[0018] The advantages of this utility model compared with the prior art are:

[0019] This utility model discloses a rubber plug transfer nesting plate with a simple and reasonable structure and convenient processing. Ribs are axially arranged on the inner wall of the receiving cylinder, and grooves adapted to the sealing part of the rubber plug are provided on the ribs. The ribs greatly reduce the contact area between the rubber plug and the inner wall of the receiving cylinder, thereby greatly reducing the movement resistance of the rubber plug in the receiving cylinder. When the rubber plug is placed in the receiving cylinder, the sealing part of the rubber plug is placed in the corresponding groove. The groove provides space for the sealing part, avoiding damage caused by prolonged compression of the sealing part when the rubber plug is placed in the receiving cylinder. At the same time, the sealing part being placed in the corresponding groove also limits the rubber plug in the receiving cylinder. No matter whether the nesting plate is placed upright or upside down, the rubber plug will not fall out of the receiving cylinder without external force. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0021] Figure 2 This is a perspective view of another embodiment of the present utility model;

[0022] Figure 3 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0023] Figure 4 yes Figure 3 Enlarged view of section A in the middle;

[0024] Figure 5 This is a 3D structural diagram of the rubber stopper;

[0025] Figure 6 This is a schematic diagram of the structure after the rubber stopper is placed into the nest plate.

[0026] The names of the reference numerals in the accompanying drawings of this utility model are:

[0027] Nest plate body 1, rubber plug 2, sealing part 2a, concave part 2b, receiving cylinder 3, guide surface 3a, rib 4, groove 41, guide slope 4a, lower slope 4b. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings:

[0029] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0030] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0031] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0032] like Figures 1 to 4As shown, a rubber stopper transfer nest plate includes a nest plate body 1. The nest plate body 1 is provided with a plurality of receiving cylinders 3 for accommodating rubber stoppers 2. Ribs 4 are axially arranged on the inner wall of the receiving cylinders 3. The ribs 4 are provided with grooves 41 that are adapted to the sealing part 2a of the rubber stopper 2. The bottom diameter of the groove 41 is larger than the diameter of the sealing part 2a of the rubber stopper 2.

[0033] The upper end of the rib 4 is provided with a guide slope 4a. The guide slope 4a facilitates the insertion of the rubber plug 2 into the receiving cylinder 3 from top to bottom.

[0034] The number of ribs 4 is 4-6, and the 4-6 ribs 4 are evenly distributed on the circumferential surface. In this embodiment, the number of ribs 4 is 4. The number of ribs 4 should not be too many, as too many ribs 4 will increase the resistance to the movement of the rubber stopper 2 within the receiving cylinder 3.

[0035] The width of the rib 4 is 3-5mm. The width of the rib 4 should not be too wide, as an excessively wide rib 4 will increase the contact area, thereby increasing the resistance to the movement of the rubber stopper 2 within the receiving cylinder 3.

[0036] The lower end of the rib 4 is provided with a lower inclined surface 4b. The lower inclined surface 4b facilitates the extrusion of the rubber stopper 2 from the receiving cylinder 3.

[0037] The upper end of the receiving cylinder 3 is connected to the nest plate body 1 via a guide surface 3a.

[0038] The guide surface 3a has a conical structure.

[0039] The guide surface 3a serves as a guide, facilitating the insertion of the rubber stopper 2 into the receiving cylinder 3.

[0040] The nest plate body 1 and the receiving cylinder 3 are integral structures.

[0041] The container cylinders 3 are arranged in a matrix, that is, in a horizontal row of M × vertical column of N, where M and N are both positive integers. Figure 1 Only a portion of the nest plate is shown, in which the receiving cylinders 3 are arranged in a 2×2 matrix. This arrangement provides sufficient space between adjacent receiving cylinders 3, facilitating the design of the rubber stopper 2 insertion and extrusion equipment.

[0042] As an extension, the container cylinders 3 can also be distributed in a honeycomb pattern. Specifically, the container cylinders 3 are placed at the six vertices and the center point of a regular hexagon and distributed throughout the entire nest plate body 1 in this way. In this distribution method, the container cylinders 3 are more compact, and more container cylinders 3 can be placed on the same area of ​​the nest plate body 1 than in a matrix distribution.

[0043] The transfer nesting plate structure of this utility model features axially arranged ribs 4 on the inner wall of the receiving cylinder 3, with grooves 41 on the ribs 4 that are adapted to the sealing part 2a of the rubber plug 2. The ribs 4 significantly reduce the contact area between the rubber plug 2 and the receiving cylinder 3 during insertion and extrusion, thereby greatly reducing the movement resistance of the rubber plug 2 within the receiving cylinder 3. When the rubber plug 2 is placed inside the receiving cylinder 3, the sealing part 2a of the rubber plug 2 is positioned within the groove 41. The groove 41 provides space for the sealing part 2a, preventing damage caused by prolonged compression of the sealing part 2a when the rubber plug 2 is placed inside the receiving cylinder 3. Simultaneously, the sealing part 2a, positioned within the corresponding groove 41, also limits the rubber plug 2 within the receiving cylinder 3. Regardless of whether the nesting plate is placed upright or upside down, the rubber plug 2 will not fall out of the receiving cylinder 3 without external force.

[0044] like Figure 3 and Figure 4 Therefore, in this embodiment, each reinforcing rib 4 is provided with two grooves 41, and the rubber plug 2 is provided with three sealing portions 2a, such as... Figure 6 As shown, when the rubber stopper 2 is placed inside the receiving cylinder 3, the two sealing rings 2a from top to bottom are placed inside the grooves 41 of the ribs 4, while the bottommost sealing ring 2a is placed on the lower inclined surface 4b. This ensures that the ribs 4 do not compress the sealing rings 2a, while reducing the resistance to movement of the rubber stopper 2 within the receiving cylinder 3. When the rubber stopper 2 is placed inside the receiving cylinder 3, the upper end of the rubber stopper 2 will be subjected to some compression, but this part is not an important working surface (sealing surface), and the compression of this part will not affect the normal use of the rubber stopper 2.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rubber plug transfer nesting board, comprising a nesting board body (1), wherein the nesting board body (1) is provided with a plurality of receiving cylinders (3) for receiving rubber plugs (2), characterized in that: The inner wall of the receiving cylinder (3) is provided with ribs (4) axially, and the ribs (4) are provided with grooves (41) that are adapted to the sealing part (2a) of the rubber stopper (2). The bottom diameter of the groove (41) is larger than the diameter of the sealing part (2a) of the rubber stopper (2).

2. The rubber stopper transfer tray according to claim 1, characterized in that: The upper end of the rib (4) is provided with a guide slope (4a).

3. The rubber stopper transfer tray according to claim 2, characterized in that: The number of the ribs (4) is 4-6, and the 4-6 ribs (4) are evenly distributed on the circumferential surface.

4. The rubber stopper transfer tray according to claim 3, characterized in that: The width of the rib (4) is 3-5mm.

5. A rubber stopper transfer tray according to claim 4, characterized in that: The lower end of the rib (4) is provided with a lower inclined surface (4b).

6. A rubber stopper transfer tray according to claim 5, characterized in that: The upper end of the container cylinder (3) is connected to the nest plate body (1) via a guide surface (3a).

7. A rubber stopper transfer tray according to claim 6, characterized in that: The guide surface (3a) has a conical structure.

8. A rubber stopper transfer tray according to claim 7, characterized in that: The nest plate body (1) and the container cylinder (3) are an integral structure.

9. A rubber stopper transfer tray according to claim 8, characterized in that: The container cylinders (3) are arranged in a matrix.

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