Extrusion molding die orifice for medical multi-cavity tube

Abstract

The utility model relates to a medical multi-cavity tube extrusion molding die orifice, which comprises a die orifice main body, the die orifice main body is provided with a runner for molten materials to pass through, a mounting groove communicated with the runner and a molding die head detachably connected in the mounting groove, and the molding die head is provided with a molding opening which is communicated with the runner and penetrates through the molding die head. The multi-cavity pipe forming die has the characteristics that by arranging the forming die head detachably connected with the die orifice main body, a user can replace the forming die heads with forming orifices with different shapes and sizes for the die orifice main body as required, so that the production requirements of multi-cavity pipes with different diameters and structures are flexibly met; and the adaptability and the utilization rate of the equipment in diversified procedures are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of multi - cavity tube extrusion molding, and particularly to an extrusion molding die orifice for medical multi - cavity tubes.

Background Art

[0002] Nowadays, due to their unique structural and functional characteristics, medical multi - cavity tubes are widely used in various medical devices such as medical catheters, drainage tubes, and contrast agent tubes. Through the mutual cooperation of the die orifice and the die core, the molten material is evenly filled into the cavity of the mold, and then cooled and shaped to form the required multi - cavity tube structure.

[0003] However, in the traditional extrusion molding process of medical multi - cavity tubes, the size and shape of the die orifice are fixed, which to a certain extent limits the production adaptability of the equipment to multi - cavity tube products of different specifications. A die orifice can often only effectively process multi - cavity tubes with specific diameters and structures. If it is necessary to produce multi - cavity tube products with other specifications or structures, the entire die orifice device needs to be replaced, which is not only costly, but also the replacement process is complex, reducing production efficiency, increasing production costs, increasing the time cost and technical difficulty of production line adjustment, and at the same time, it cannot meet the market demand for diversified and personalized medical multi - cavity tube products.

Content of the Utility Model

[0004] The purpose of the utility model is to provide an extrusion molding die orifice for medical multi - cavity tubes, so as to solve the above problems.

[0005] To solve the above - mentioned technical problems, the utility model provides the following technical solution: An extrusion molding die orifice for medical multi - cavity tubes, including a die orifice main body, the die orifice main body is provided with a flow channel through which the molten material can pass, an installation groove communicated with the flow channel, and a forming die head detachably connected in the installation groove. The forming die head is provided with a forming orifice communicated with the flow channel and penetrating the forming die head.

[0006] As a further optimized solution of the utility model, the forming die head includes an installation table, and the installation groove is provided with a limiting flange that can abut against the lower part of the installation table when the forming die head is located in the installation groove, thereby restricting the downward movement of the forming die head.

[0007] As a further optimized solution of the utility model, the forming die head further includes a forming part, and the outer wall of the forming part abuts against the inner wall of the limiting flange.

[0008] As a further optimized solution of the utility model, the lower surface of the forming part is flush with the lower surface of the die orifice main body.

[0009] As a further optimized solution of the utility model, the limiting flange is arranged annularly around the inner wall of the installation groove.

[0010] As a further optimization solution of the present utility model, the outer wall of the mounting table abuts against the wall of the mounting groove.

[0011] As a further optimization solution of the present utility model, the mounting table is cylindrical, the forming opening is circular, and the central axis A of the mounting table coincides with the central axis B of the forming opening.

[0012] As a further optimization solution of the present utility model, the flow channel is frustum-shaped, the small end of the frustum is close to the mounting groove, and the central axis C of the flow channel coincides with the central axis B of the forming opening.

[0013] As a further optimization solution of the present utility model, an installation flange is further provided on the upper part of the die orifice body.

[0014] As a further optimization solution of the present utility model, a positioning flange is further provided at the upper end of the die orifice body.

[0015] Compared with the prior art, the present utility model has the following advantages: Through the setting of the forming die head detachably connected to the die orifice body, the user can replace the forming die head with a forming opening of different shapes and sizes for the die orifice body according to needs, so as to flexibly meet the production requirements of multi-cavity tubes with different diameters and structures, and greatly improve the adaptability and utilization rate of the equipment in diverse processes.

Description of the Drawings

[0016] The following further details the specific embodiments of the present utility model in conjunction with the drawings, where:

[0017] Figure 1 is a three-dimensional schematic diagram of the present utility model;

[0018] Figure 2 is an exploded schematic diagram of the present utility model;

[0019] Figure 3 is a cross-sectional schematic diagram of the present utility model.

Specific Embodiments

[0020] The following details the embodiments of the present utility model in conjunction with the drawings.

[0021] As Figures 1 to 3 shown, the present utility model discloses a medical multi-cavity tube extrusion forming die orifice, including a die orifice body 1, a flow channel 2 for allowing molten material to pass through is provided on the die orifice body 1, a mounting groove 3 communicated with the flow channel 2, and a forming die head 4 detachably connected in the mounting groove 3, and a forming opening 5 communicated with the flow channel 2 and penetrating the forming die head 4 is provided on the forming die head 4.

[0022] The die orifice body 1, as the main component of the die orifice, is connected to production equipment such as an extruder. The flow channel 2 is arranged inside the die orifice body 1, which can guide and control the molten material conveyed from the extruder to uniformly and continuously flow into the forming area. The installation groove 3 provides an installation site for the forming die head 4. Compared with installing the forming die head 4 below the die orifice body 1 or other positions, installing it in the installation groove 3 can make the structure of the die orifice more compact, reduce the volume and occupied space of the overall equipment, and facilitate the integration and layout on the production line. The forming die head 4 is detachably connected in the installation groove 3, realizing the convenient assembly and disassembly between the forming die head 4 and the die orifice body 1. Through the forming orifice 5 that communicates with the flow channel 2 and penetrates the forming die head 4, the shape and pipe diameter of the multi-cavity tube finished product are determined. Users can quickly replace the forming die head 4 with different forming orifices 5 according to the requirements of multi-cavity tubes with different specifications and structures, greatly improving the flexibility and adaptability of the equipment, and reducing the production cost and adjustment time.

[0023] In the embodiment, the forming orifice 5 is circular, and it can also be replaced with other shapes such as plum blossom shape according to needs to manufacture diversified and personalized medical multi-cavity tubes.

[0024] Through the setting of the forming die head 4 detachably connected to the die orifice body 1, users can replace the forming die head 4 with different shapes and sizes of forming orifices 5 for the die orifice body 1 according to needs, so as to flexibly meet the production requirements of multi-cavity tubes with different diameters and structures, and greatly improve the adaptability and utilization rate of the equipment in diverse processes.

[0025] The forming die head 4 includes an installation platform 41, and a limiting flange 6 is arranged in the installation groove 3, which can abut against the lower part of the installation platform 41 when the forming die head 4 is located in the installation groove 3 to limit the downward movement of the forming die head 4.

[0026] The installation platform 41, as a part of the forming die head 4, can provide a supporting plane that cooperates with the installation groove 3. When the forming die head 4 is inserted into the installation groove 3, the limiting flange 6 arranged inside the installation groove 3 will contact and abut against the lower part of the installation platform 41, providing a mechanical limit to the downward movement of the forming die head 4, preventing the forming die head 4 from detaching from the die orifice body 1 through the installation groove 3, so as to ensure that the molten material can accurately enter the forming orifice 5 through the flow channel 2 for precise forming. Through the cooperation of the installation platform 41 and the limiting flange 6, not only the stability and safety of the equipment operation are improved, but also the installation process of the forming die head 4 is simplified. Users only need to push the forming die head 4 into the flow channel 2, and the forming die head 4 enters the installation groove 3 through the flow channel 2 until it abuts against the limiting flange 6 to complete the installation, without additional complex fixing measures.

[0027] The detachable connection can also be implemented in other ways, such as through threaded connection or snap connection. Compared with connection methods such as threaded connection or snap connection, the mounting table 41 in the embodiment cooperates with the limiting flange 6 to achieve detachable connection. When the forming die head 4 needs to be replaced, the forming die head 4 can be taken out by simply pushing the forming die head 4 upward, and there is no need to disassemble the die orifice, which is convenient for replacement.

[0028] The forming die head 4 further includes a forming part 42, and the outer wall of the forming part 42 abuts against the inner wall of the limiting flange 6.

[0029] After the molten material flows into the forming die head 4 through the runner 2, it cooperates with the die core in the forming part 42 to form the required multi-cavity structure by shaping. The outer wall of the forming part 42 abuts against the inner wall of the limiting flange 6 in the mounting groove 3, further enhancing the positioning accuracy and stability of the forming die head 4 in the die orifice body 1.

[0030] The lower surface of the forming part 42 is flush with the lower surface of the die orifice body 1.

[0031] The lower surface of the forming part 42 being flush with the lower surface of the die orifice body 1 can make the die orifice structure more compact. At the same time, after replacing the forming die head 4 of different specifications, the die orifice can still maintain good docking and cooperation with the downstream process equipment such as cooling and shaping, and traction cutting. The design of the flush lower surface also facilitates daily cleaning and maintenance work, avoiding problems such as material accumulation or difficult cleaning caused by height differences.

[0032] The limiting flange 6 is arranged annularly around the wall of the mounting groove 3.

[0033] The limiting flange 5 surrounds the wall of the mounting groove 3 for one week, thereby realizing the limiting of the forming die head 4 in multiple directions, avoiding the risk of radial movement of the forming die head 4 caused by factors such as uneven force or thermal expansion during the extrusion process, and thus ensuring the accuracy and stability of the docking between the forming orifice 5 and the runner 2.

[0034] The outer wall of the mounting table 41 abuts against the wall of the mounting groove 3.

[0035] Through the close fit setting of the mounting table 41 and the wall of the mounting groove 3, while preventing the forming die head from radially shifting during operation, it also helps to improve the sealing performance of the die orifice, reduce the possibility of molten material leaking from the interface, and thus improve the material utilization rate and product quality.

[0036] The mounting table 41 is cylindrical, the forming orifice 5 is circular, and the central axis A of the mounting table 41 coincides with the central axis B of the forming orifice 5.

[0037] The design of the round hole-shaped forming port 5 helps the material to be evenly stressed in all directions, which is conducive to forming a multi-cavity tube product with uniform wall thickness and regular shape, and improving the consistency of product quality. The mounting table 41 coincides with the central axis of the forming port 5, ensuring that the molten material can smoothly enter the forming port 5 from the runner 2 and guaranteeing the precise forming of the internal structure of the multi-cavity tube.

[0038] The runner 2 is frustum-shaped, the small end of the frustum is close to the mounting groove 3, and the central axis C of the runner 2 coincides with the central axis B of the forming port 5.

[0039] The frustum-shaped runner 2 can achieve a gradual increase in the pressure of the molten material during the flow process, thus ensuring that the material has an appropriate pressure when entering the forming port 5, which is conducive to forming a stable multi-cavity structure and improving product quality. At the same time, the transition form of the runner 2 from large to small can effectively prevent the molten material from staying or accumulating during the flow process, reducing the possibility of blockage. The coincidence of the central axis C of the runner 2 and the central axis B of the forming port 5 ensures that the material moves in a straight line during the extrusion process, avoiding deviation or deformation.

[0040] The upper part of the die orifice body 1 is also provided with a mounting flange 7, and the upper end of the die orifice body 1 is also provided with a positioning flange 8.

[0041] The die orifice is firmly connected to the extruder or other equipment components through the mounting flange 7. At the same time, the positioning flange 8 prevents the molten material from flowing in the wrong direction or having a poor forming effect.

[0042] The usage method of the present utility model is as follows:

[0043] The user installs the die orifice and selects a matching forming die head 4 according to the specifications and structure of the medical multi-cavity tube to be produced. The selected forming die head 4 is inserted into the mounting groove 3 of the die orifice body 1 through the runner 2. The cooperation between the forming die head 4 and the die orifice body 1 is realized through the abutment of the mounting table 41 against the wall of the mounting groove 3 and the contact of the limit flange 6 with the outer wall of the forming part 42. The die core is inserted into the forming port 5 of the die orifice to form a cavity. Then the pretreated material is heated to the molten state and pushed into the runner 2 in the die orifice by an extruder. The molten material flows along the direction of the runner 2, reaches the forming die head 4 under the action of pressure, enters the forming port 5, and forms a cavity jointly formed by the die core and the forming port 5, thereby obtaining a multi-cavity tube structure with a predetermined shape. When it is necessary to produce multi-cavity tubes with different shapes or pipe diameters, only the original forming die head 4 needs to be disassembled, replaced with a new suitable die head, and reinstalled and debugged according to the above steps.

Claims

1. A medical multi-lumen tube extrusion molding die, characterized in that: The invention comprises a die body (1), the die body (1) being provided with a flow channel (2) through which molten material can pass, a mounting groove (3) connected to the flow channel (2), and a molding die head (4) detachably connected to the mounting groove (3), the molding die head (4) being provided with a molding port (5) connected to the flow channel (2) and penetrating the molding die head (4).

2. The medical multi-lumen tube extrusion molding die according to claim 1, characterized in that: The molding die head (4) comprises a mounting platform (41), and a limiting flange (6) is provided in the mounting groove (3) and is capable of abutting against the lower part of the mounting platform (41) when the molding die head (4) is located in the mounting groove (3), thereby limiting the downward movement of the molding die head (4).

3. The medical multi-lumen tube extrusion molding die according to claim 2, characterized in that: The molding die head (4) further comprises a molding portion (42), the outer wall of the molding portion (42) being in contact with the inner wall of the limiting flange (6).

4. The medical multi-lumen tube extrusion molding die according to claim 3, characterized in that: The lower surface of the molding portion (42) is flush with the lower surface of the die body (1).

5. The medical multi-lumen tube extrusion molding die according to claim 2, characterized in that: The limiting flange (6) is arranged in an annular shape around the groove wall of the installation groove (3).

6. The medical multi-lumen tube extrusion molding die according to claim 2, characterized in that: The outer wall of the mounting platform (41) abuts against the groove wall of the mounting groove (3).

7. The medical multi-lumen tube extrusion molding die according to claim 2, characterized in that: The mounting platform (41) is cylindrical, the molding opening (5) is circular hole-shaped, and the central axis A of the mounting platform (41) coincides with the central axis B of the molding opening (5).

8. The medical multi-lumen tube extrusion molding die according to claim 7, characterized in that: The flow channel (2) is in the shape of a truncated cone, the small end of the truncated cone is close to the mounting groove (3), and the central axis C of the flow channel (2) coincides with the central axis B of the molding port (5).

9. The medical multi-lumen tube extrusion molding die according to claim 1, characterized in that: The upper part of the die body (1) is also provided with a mounting flange (7).

10. The medical multi-lumen tube extrusion molding die according to claim 1, characterized in that: The upper end of the die body (1) is also provided with a positioning flange (8).

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