CN211074513U - Injection mold of infusion spiral cap that a mould is many - Google Patents

Abstract

The utility model relates to an injection mold field discloses the injection mold of cap is revolved in infusion that a mould goes out more, injection mold includes: the front mold core is positioned at the top of the injection mold and is provided with a row of cavities for forming the injection screw cap; the rear mold core is arranged at the bottom of the front mold core and is used for being matched with the front mold core to form a joint surface of each infusion spin cap; the sliding block inserts are positioned between the front mold core and the rear mold core and are used for forming external threads of the infusion spin cap; the tooth twisting mechanism extends into the cavity from bottom to top, and the tooth twisting mechanism comprises threaded inserts positioned in the cavity, gears connected below the threaded inserts and a row of gear racks in a meshing driving mode, can form a plurality of infusion screw caps in a whole row through one-time injection molding, and improves production benefits.

Description

Injection mold of infusion spiral cap that a mould is many

Technical Field

The utility model relates to an injection mold field especially relates to the injection mold of cap is revolved in infusion that a mould was many.

Background

The existing infusion screw cap is widely applied to the medical industry. For example, in a portable insulin infusion device, an assembly hole is formed in the position of the drug outlet end of the injection tube, an infusion screw cap is arranged at the assembly position, a connection hole is formed in the infusion screw cap, the connection hole is tightly matched with the drug outlet end of the injection tube through internal and external threads, and the tail end of an infusion tube connected with the connection hole is connected with a human body.

Because the infusion turncap has an internal and external thread structure, the demoulding is difficult after injection moulding, and particularly, in order to improve the production efficiency, one mould with more parts becomes a production difficulty.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an injection mold who revolves cap is revolved in the infusion that a mould goes out more, can once injection moulding go out a whole row of a plurality of infusions and revolve cap, improve the productivity effect. In order to realize the above purpose of the utility model, the technical scheme of the utility model is that:

The injection mold comprises an injection mold with a plurality of injection molding screw caps, wherein each injection screw cap is provided with a liquid conveying pipe, a connecting hole, an internal thread and an external thread of the connecting hole, and a joint surface of the injection screw cap positioned at the end part of the connecting hole; the injection mold includes:

The front mold core is positioned at the top of the injection mold and is provided with a row of cavities for forming the injection screw cap;

The rear mold core is arranged at the bottom of the front mold core and is used for being matched with the front mold core to form a joint surface of each infusion spin cap;

The sliding block inserts are positioned between the front mold core and the rear mold core and are used for forming external threads of the infusion spin cap;

The tooth twisting mechanism extends into the cavity from bottom to top, and comprises threaded inserts positioned in the cavities, gears connected below the threaded inserts and racks for meshing and driving the gears in the same row.

Preferably, the die further comprises ejector pins, and ejector pins abutting against the thread twisting mechanism are arranged above each cavity.

Preferably, a pouring port of the infusion spin cap is arranged on a parting surface between the slide block inserts.

The utility model has the advantages that:

Compared with the prior art, the utility model discloses a plurality of infusions that can once only injection moulding go out a whole row are revolved the cap, improve the productivity effect.

Drawings

FIG. 1 is a front-to-back schematic view of a preferred embodiment of the present invention;

3 FIG. 3 2 3 is 3 a 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3

FIG. 3 is an enlarged schematic view of section B of FIG. 1;

FIG. 4 is a schematic external view of an injection molded infusion cap;

Wherein the reference numerals are:

10. A front mold core; 20. a rear mold core; 30. a slide block insert; 40. a tooth twisting mechanism; 401. a threaded insert; 402. a gear; 50. a thimble; 60. an infusion screw cap; 601. an external thread; 602. a bonding surface; 603. a pouring gate; 604. an internal thread.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Detailed Description

1-4, an injection mold with an injection screw cap with multiple molds, the injection screw cap 60 having an infusion tube, a connection hole, an internal thread 604 and an external thread 601 of the connection hole, and a joint surface 602 of the injection screw cap 60 at the end of the connection hole; the injection mold includes:

The front mold core 10 is positioned at the top of the injection mold and is provided with a row of multiple cavities for forming the infusion caps 60, each cavity can be formed to produce one infusion cap 60, and fig. 2 shows an embodiment capable of producing a row of four infusion caps 60, of course, the number of the cavities of the injection mold can be two, three, five or more than five, so that the number of the produced infusion caps 60 can be two, three, five or more than five, and the production efficiency is improved compared with the existing injection mold with one mold and one discharge, in the preferred embodiment, the front mold core 10 is divided into two symmetrical parts along the XZ plane direction of the center of the cavity, thereby facilitating demolding;

The rear mold core 10 is installed at the bottom of the front mold core 10 and is used for being matched with the front mold core 10 to form a joint surface 602, located at the end of the connecting hole, of each infusion spin cap 60, and in the preferred embodiment, the rear mold core 10 is divided into two symmetrical parts along the direction of an XZ plane in the center of the cavity, so that demolding is facilitated;

The plurality of slide block inserts 30 are positioned between the front mold core 10 and the rear mold core 10 and are used for forming the external threads 601 of the infusion spin cap 60, and in the demolding process after the infusion spin cap 60 is formed, each slide block insert 30 slides outwards along the mold cavity, so that the external threads 601 of the infusion spin cap 60 can be demolded;

The thread twisting mechanism 40 extends into the cavities from bottom to top, the thread twisting mechanism 40 comprises threaded inserts 401 located in each cavity, gears 402 connected to the lower portions of the threaded inserts 401, and racks for meshing and driving the gears 402 in the same row, the threaded inserts 401 can form connection holes of the infusion screw cap 60 and internal threads 604 of the connection holes, and the racks are not shown in the drawing. Before the front mold core 10 is demolded, each slide block insert 30 slides outwards along the mold cavity, so that the external threads 601 of the infusion screw cap 60 are demolded, then, the infusion screw cap 60 is positioned on the infusion tube in a rib shape and is embedded in the front mold core 10, the rack is meshed with the driving gear 402 to form a gear rack assembly, the driving screw insert 401 can retreat from the internal threads 604 of the formed infusion screw cap 60, the rack can simultaneously drive a plurality of gears 402 in a row, so that a plurality of screw inserts 401 retreat from the internal threads 604 of each corresponding formed infusion screw cap 60, and a connecting hole and the internal threads 604 thereof are formed. The utility model discloses can once injection moulding go out a plurality of infusions of whole row and revolve cap 60, be that a mould is many promptly, improve the productivity effect.

In a preferred embodiment, the infusion apparatus further comprises an ejector pin 50, an ejector pin 50 abutting against the thread twisting mechanism 40 is arranged above each cavity, the ejector pin 50 is used for forming an infusion tube on the infusion screw cap 60, and the infusion tube is communicated with the connecting hole.

In a preferred embodiment, a pouring port 603 of the injection screw cap 60 is arranged on a parting surface between the slide block inserts 30, so that demolding is facilitated, and a branch channel at the pouring port 603 can be broken off by rotating the injection screw cap 60.

The above embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and all equivalent changes made by the shape, structure and principle of the present invention should be covered by the protection scope of the present invention.

Claims (3)

1. An injection mold of an infusion turncap with multiple dies, the injection mold comprising:

The front mold core is positioned at the top of the injection mold and is provided with a row of cavities for forming the injection screw cap;

The rear mold core is arranged at the bottom of the front mold core and is used for being matched with the front mold core to form a joint surface of each infusion spin cap;

The sliding block inserts are positioned between the front mold core and the rear mold core and are used for forming external threads of the infusion spin cap;

The tooth twisting mechanism extends into the cavity from bottom to top, and comprises threaded inserts positioned in the cavities, gears connected below the threaded inserts and racks for meshing and driving the gears in the same row.

2. The injection mold of claim 1, further comprising a thimble, wherein a thimble abutting against the threading mechanism is disposed above each cavity.

3. The injection mold of claim 1, wherein a sprue gate of an infusion spin cap is provided on a parting plane between the slide insert pieces.

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