Medical special-shaped tube plug forming die

Abstract

A medical special-shaped pipe plug forming die comprises a cavity compound plate and a core compound plate, a hot runner frame, a hot runner plate and a cavity template are arranged below the cavity compound plate, a hot nozzle is connected below the hot runner plate, die feet and a core template are arranged on the core compound plate, an upper top plate and a lower top plate are arranged between the die feet, and the core template is matched with the cavity template. A cavity insert is arranged in the cavity mold plate, a first notch rib is arranged on the cavity insert, three cap elastic blocks which are equally divided and matched in a surrounding mode are arranged on the core mold plate in a sliding mode, a second notch rib and a third notch rib are arranged on each cap elastic block, an elastic hole is formed in each cap elastic block, and an inner drawing spring is arranged in each elastic hole. The upper end of the inner pulling spring abuts against the cavity template, the upper top plate is connected with a base core rod, the core compound plate is connected with a core rod, the core rod penetrates through the base core rod, the core rod and the base core rod extend out of the core template together and form a mold cavity with the three cap elastic blocks and the cavity insert, and the hot nozzle penetrates through the cavity insert to be communicated with the mold cavity.

Description

Technical Field

[0001] This utility model relates to a medical irregular tube plug molding mold, belonging to the field of injection molds. Background Technology

[0002] A medical tube stopper is a stopper used to seal the opening of medical tubes (such as test tubes). Based on market demand, the applicant has designed a special-shaped tube stopper. The special-shaped tube stopper includes a base with three umbrella-shaped caps on the base. Each of the three umbrella-shaped caps has three equally spaced notches. Based on the above structure, the applicant has designed a molding die for producing the special-shaped tube stopper. Summary of the Invention

[0003] The purpose of this invention is to provide a medical irregular tube plug forming mold that adopts a multi-cavity mold, with each cavity using a three-part internal spring block forming core-pulling structure, resulting in high production efficiency and smooth demolding.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A medical-grade irregular tube plug forming mold includes a cavity backing plate and a core backing plate. A hot runner frame is disposed under the cavity backing plate, a hot runner plate is disposed within the hot runner frame, a hot nozzle is connected below the hot runner plate, and a cavity template is disposed under the hot runner frame. A mold foot is disposed on the core backing plate, and a core template is disposed on the mold foot. An upper top plate and a lower top plate are disposed between the mold feet. The core template mates with the cavity template. A cavity insert is disposed within the cavity template, and a first notch rib is disposed on the cavity insert. A sliding part is disposed on the core template. The mold consists of three equally divided and enclosing cap spring blocks. The cap spring blocks are provided with a second notch rib and a third notch rib. The cap spring blocks are provided with spring holes, and an inner pull spring is provided in the spring holes. The upper end of the inner pull spring abuts against the cavity template. The upper top plate is connected to the base core rod, and the core plate is connected to the core rod. The core rod passes through the base core rod and extends out of the core template together with the core rod and the base core rod, forming a mold cavity with the three cap spring blocks and the cavity insert. The hot nozzle passes through the cavity insert and connects to the mold cavity.

[0006] Furthermore, a third notched rib insert is provided in the cap spring block, and the third notched rib is provided on the third notched rib insert.

[0007] Furthermore, a limiting groove is provided at the bottom of the cap spring block, and a limiting block is provided on the corresponding core template, with the limiting block cooperating with the limiting groove.

[0008] Furthermore, a water channel plate is provided on the core plate, with a water inlet in the water channel plate and cooling water holes in the core rod, the cooling water holes being connected to the water inlet.

[0009] Furthermore, the mold cavity has 1-32 groups.

[0010] The advantages of this utility model for forming a medical irregular tube plug are:

[0011] The system employs a three-part, equally divided cap-shaped spring block structure. During demolding, the cap-shaped spring blocks, driven by the mold opening force and spring pressure, slide, causing the outer surface of the product to detach. This results in the demolding of the product's three-layer umbrella-shaped cap and three notches. The sliding direction of the three cap-shaped spring blocks aligns with the direction of the notches on the product. The umbrella-shaped caps can be easily removed using the material properties of PP, preventing damage to the product and ensuring smooth demolding. Notably, the mold cavity can be configured with 1-32 cavities, allowing for the production of 1-32 products in a single injection molding process, resulting in high production efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a medical irregular tube plug forming mold according to the present invention;

[0013] Figure 2 yes Figure 1 A magnified view of part A;

[0014] Figure 3 This is a schematic diagram of the assembly relationship of the three cap spring blocks of this utility model;

[0015] Figure 4 This is a schematic diagram showing the relationship between the cavity insert, the cap spring, and the irregular cap of this utility model. Detailed Implementation

[0016] The present invention will be described in detail below with reference to specific implementation examples. The following implementation examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way.

[0017] like Figure 1 — Figure 4As shown, this utility model relates to a medical irregular tube plug forming mold, including a cavity cover plate 1 and a core cover plate 2. A hot runner frame 3 is provided under the cavity cover plate 1, a hot runner plate 5 is provided in the hot runner frame, a hot nozzle 6 is connected under the hot runner plate, a cavity template 7 is provided under the hot runner frame, mold feet 8 are provided on the core cover plate, a core template 9 is provided on the mold feet, an upper top plate 10 and a lower top plate 11 are provided between the mold feet 8, the core template 9 cooperates with the cavity template 7, a cavity insert 12 is provided in the cavity template 7, a first notch rib 13 is provided on the cavity insert 12, and a sliding rib 13 is provided on the core template 9. Three equally divided and enclosing cap spring blocks 15 are provided. The cap spring blocks 15 are provided with a second notch rib 16 and a third notch rib 17. The cap spring blocks are provided with spring holes 18. The spring holes are provided with inner pull springs 19. The upper end of the inner pull springs 19 abuts against the cavity template 7. The upper top plate 10 is connected to the base core rod 20. The core plate 2 is connected to the core rod 21. The core rod 21 passes through the base core rod 20. The core rod 21 and the base core rod 20 extend out of the core template 9 together and form a mold cavity with the three cap spring blocks 15 and the cavity insert 12. The hot nozzle 6 passes through the cavity insert 12 and connects to the mold cavity.

[0018] During injection molding, plastic raw material is injected into the mold cavity through the hot nozzle 6. After processes such as pressure holding and shaping, a shaped tube plug 01 is obtained. The shaped tube plug 01 consists of a base 02 and three umbrella-shaped caps 03. Each cap has three notches 05. During demolding, the cavity template 7 remains stationary, while the core template 9 is driven downwards by a power source, separating from the cavity template 7. The shaped tube plug 01 remains on the core rod 21 and moves downwards along with it. At the same time, the inner pull spring 19 loses its shape. The pressure of the cavity template 7 causes the cap spring block 15 to be pulled inward. The three cap spring blocks 15 slide in three directions respectively, causing the three-layer umbrella-shaped cap 03 to be released. Then the mold continues to open. During this process, the lower ejector plate 11, under the action of the injection molding machine push rod, drives the base core rod 20 to be pushed upward through the upper ejector plate 10. The base core rod 20 contacts the base 02, pushing the irregular tube plug 01 out from the core rod 21 and automatically falling out of the mold, or being picked up by the robot arm, thus completing the demolding.

[0019] Furthermore, a third notch rib insert 22 is provided in the cap spring block 15, and a third notch rib 16 is provided on the third notch rib insert 22. In actual production, it is difficult to process the second notch rib and the third notch rib on the cap spring block at the same time. Therefore, a third notch rib insert is provided in the cap spring block and fixed by screws. The third notch rib is provided on the third notch rib insert.

[0020] Furthermore, a limiting groove 25 is provided at the bottom of the cap spring block 15, and a limiting block 26 is provided on the corresponding core template 9. The limiting block 26 cooperates with the limiting groove 25 to prevent the three cap spring blocks 15 from colliding and being damaged during reset.

[0021] Furthermore, a water channel plate 27 is provided on the core plate 2, and a water inlet 28 is provided in the water channel plate. A cooling water hole 29 is provided in the core rod 21. The cooling water hole 29 is connected to the water inlet 28. Cooling water enters the cooling water hole through the water inlet to quickly cool the core rod and the formed product, shortening the cooling time.

[0022] Furthermore, the mold cavity has 1-32 sets, meaning that 1-32 products can be produced in one injection molding, resulting in high production efficiency.

[0023] The above specific embodiments are used to explain and illustrate the present utility model, and are not intended to limit the present utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims shall fall within the protection scope of the present utility model.

Claims

1. A medical-grade irregular tube plug forming mold, comprising a cavity cover plate (1) and a core cover plate (2), wherein a hot runner frame (3) is provided under the cavity cover plate (1), a hot runner plate (5) is provided in the hot runner frame, a hot nozzle (6) is connected under the hot runner plate, a cavity template (7) is provided under the hot runner frame, mold feet (8) are provided on the core cover plate, a core template (9) is provided on the mold feet, an upper top plate (10) and a lower top plate (11) are provided between the mold feet (8), and the core template (9) cooperates with the cavity template (7), characterized in that: Cavity insert (12) is provided in the cavity template (7). A first notch rib (13) is provided on the cavity insert (12). A cap spring block (15) consisting of three equally divided and enclosed parts is slidably provided on the core template (9). A second notch rib (16) and a third notch rib (17) are provided on the cap spring block (15). A spring hole (18) is provided in the cap spring block. An inner pull spring (19) is provided in the spring hole. The upper end of the inner pull spring (19) abuts against the cavity template (7). A base core rod (20) is connected to the upper top plate (10). A core rod (21) is connected to the core plate (2). The core rod (21) passes through the base core rod (20). The core rod (21) and the base core rod (20) extend out of the core template (9) together and form a mold cavity with the three cap spring blocks (15) and the cavity insert (12). A hot nozzle (6) passes through the cavity insert (12) and connects to the mold cavity.

2. The medical irregular tube plug forming mold as described in claim 1, characterized in that... The cap spring block (15) is provided with a third notch rib insert (22), and the third notch rib (17) is provided on the third notch rib insert (22).

3. The medical irregular tube plug forming mold as described in claim 1, characterized in that... The cap spring block (15) has a limiting groove (25) at its bottom, and a limiting block (26) is provided on the corresponding core template (9). The limiting block (26) cooperates with the limiting groove (25).

4. A medical irregular tube plug forming mold as described in claim 1, characterized in that... A water channel plate (27) is provided on the core plate (2), an inlet (28) is provided in the water channel plate, and a cooling water hole (29) is provided in the core rod (21), with the cooling water hole (29) connected to the inlet (28).

5. A medical irregular tube plug forming mold as described in claim 1, characterized in that... The mold cavity has 1-32 groups.

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