CN218069475U

CN218069475U - Injection molding machine head internal mold for producing non-filling non-shielding six-type data cable

Info

Publication number: CN218069475U
Application number: CN202221878253.5U
Authority: CN
Inventors: 骆佳欢; 王书杭; 刘富强
Original assignee: Zhejiang Wanma Tianyi Communication Wire & Cable Co ltd
Current assignee: Zhejiang Wanma Tianyi Communication Wire & Cable Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-12-16
Anticipated expiration: 2032-07-20

Abstract

The invention relates to a die. The inner die can be matched with the original outer die to quickly and efficiently produce target products. The technical scheme is that an injection molding machine head internal mold for producing non-filling non-shielding six-class data cables is characterized in that: a plurality of guide grooves which are symmetrical to the axis of the inner die are uniformly distributed on the outer conical surface of the inner die main body, and a cavity in the middle of the cross section of the outlet section is in a cross shape; and a plurality of sunken parts on the outer surface of the outlet section are respectively communicated with the guide grooves one by one.

Description

Injection molding machine head internal mold for producing non-filling non-shielding six-type data cable

Technical Field

The utility model relates to a mould, especially, the centre form of the aircraft nose of moulding plastics of production data cable.

Background

With the deep development of global social informatization and economy internationalization, the information network system becomes more and more important in the age of 5G, smart cities, internet of things, intelligent buildings and security monitoring, becomes the most important infrastructure of the country, and is an important mark of the national economic strength. Network wiring is the "nervous system" of information network systems; the network system scale is getting bigger and bigger, the network structure is getting more and more complicated, the network function is getting more and more, six kinds of data cables (weak cables) used are also greatly increased.

The structure of a conventional six-type data cable is shown in fig. 8, wherein four twisted pairs (two wires 7 covered with an insulating shell are twisted to form a pair of twisted pairs; a contour line 8 formed by the twisted pairs is shown in the figure) are arranged in a sheath, and a cross-shaped framework 9 is adopted to separate the four twisted pairs from each other. The structure has better transmission performance, but more manufacturing procedures and higher cost, and is not easy to reduce. To this end, the applicant proposed a jacket 6 of improved structure (the cross-section of which is shown in fig. 7); the inner wall of the sheath is uniformly provided with a plurality of ribs 6-1, the inner cavity of the sheath is divided into a plurality of small spaces, and all the twisted pairs are embedded into the small spaces one by one, so that the conventional cross-shaped framework is omitted on the premise of keeping the original transmission performance of the six types of data cables, and the production process and the cost are simplified. However, how to omit the cabling process and injection mold the jacket of this type becomes a problem to be solved by the skilled person.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of above-mentioned background art, provide a production does not have mould plastics aircraft nose centre form of filling six types of data cables of non-shielding, this centre form can be with original external mold cooperation, produce the target product fast high-efficiently.

The utility model adopts the technical proposal that: an injection molding machine head internal mold for producing non-filling non-shielding six-class data cables comprises a tubular internal mold main body, wherein the outer circumferential surface of the internal mold main body is conical, and an external thread for mounting the internal mold main body is manufactured at the larger end of the internal mold main body; the smaller end is communicated with an outlet section; the cavity in the inner die main body penetrates through the whole inner die main body in the axial direction of the inner die main body;

the inner die is characterized in that a plurality of guide grooves which are symmetrical to the axis of the inner die are uniformly distributed on the outer conical surface of the inner die main body, and a cavity in the middle of the cross section of the outlet section is in a cross shape; and a plurality of sunken parts on the outer surface of the outlet section are respectively communicated with the guide grooves one by one.

The end face of the larger end of the inner die main body is connected with a connecting section, and the external thread is manufactured on the connecting section.

The guide groove is gradually shallow from the outer surface of the outlet section to the outer surface of the larger end of the inner die body until the guide groove disappears.

The outer surface of the larger end of the inner die main body is provided with two parallel planes for installation.

The thickness of the wall part of each part of the outlet section is the same.

The beneficial effects of the utility model reside in that: the utility model discloses improved structure on conventional traditional centre form basis, include to design into the cavity of export section cross cavity, on the outer conical surface of inner mould main part a plurality of symmetries of equipartition in centre form axis and the guide slot of intercommunication export section surface depressed part one by one for the inner wall of the sheath product of producing is from taking the bead, and bead after the shaping makes between each pair of stranded conductor keep the distance, is of value to the crosstalk improvement between the stranded conductor. Compared with the existing six types of data cable structures (the structure that the cross-shaped framework is adopted in the center of the sheath to separate each pair of twisted-pair wires), the sheath product not only simplifies the production process, but also can ensure that the product quality can reach the national standard.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic top view of the present invention.

Fig. 3 is a left side view structure diagram of the present invention.

Fig. 4 is a schematic perspective view of the present invention.

Fig. 5 is a schematic view of the installation structure of the present invention (a view of the fitting relationship with the existing external mold).

Fig. 6 is a schematic perspective view of the present invention when it is combined with an existing external mold.

Fig. 7 is a schematic cross-sectional structure diagram of a six-type data cable adopting the injection molding of the present invention.

Fig. 8 is a schematic cross-sectional view of a conventional six-type data cable with a cross-shaped frame.

Detailed Description

The present invention will be further explained with reference to the drawings.

The injection molding machine head (injection molding machine head) internal mold for producing the non-filling non-shielding six-type data cable shown in fig. 1 comprises an internal mold main body 1 which is tubular and has a conical outer circumferential surface, wherein the end face of the larger end of the internal mold main body is connected with a connecting section 3, and an external thread is manufactured on the connecting section (the external thread is used for fixing the internal mold on the machine head and keeping a proper distance from the external mold); the smaller end is communicated with a tubular outlet section 2, and the wall thickness of the outlet section is kept uniform. The cavity in the inner die main body penetrates through the whole inner die main body (including the outlet section) in the axial direction of the inner die main body; this cavity is used for guiding the cable conductors 4 during injection molding (cable conductors enter from the connecting section, pass through the cavity of the inner mold and then exit from the outlet; the direction is indicated by the arrow a in fig. 5).

The structure is similar to the existing internal mold.

The improvement of the utility model is that a plurality of guide grooves 1-1 (four guide grooves can be seen in the figure) are evenly arranged on the outer conical surface of the inner mold main body for the plastic flow in a molten state; the guide grooves are arranged symmetrically to the axis of the inner die; the cavity in the middle of the cross section of the outlet section is a cross cavity 2-1; a plurality of sunken parts 2-2 (the wall parts of all parts of the outlet section are the same in thickness, and the cavity in the outlet section is a cross-shaped cavity, so that the sunken parts corresponding to the cross-shaped cavity are formed on the outer surface of the outlet section) of the outer surface of the outlet section are respectively communicated with the guide grooves one by one, and therefore a plurality of convex edges protruding towards the axial direction of the inner die are formed after the molten plastic passes through the sunken parts; and meanwhile, the extrusion pressure of the product is smaller and more stable.

Further, the guide groove is gradually shallow from the outer surface of the outlet section to the outer surface of the larger end of the inner die body until the guide groove disappears; therefore, when the plastic is injected, the molten plastic flows to the outlet end, and the plurality of ribs can gradually reach the required height and shape.

The outer surface of the larger end of the inner mold main body is provided with two parallel planes 1-2 for installation; the two planes are used for fixing during installation (can be matched with a special spanner).

The position relationship between the outer mold 5 and the inner mold after installation of the utility model is shown in fig. 5 (the supporting parts of the inner mold and the outer mold are omitted in the figure). The outer mold is of a conventional structure, and a gap 10 (the size of the gap is determined according to requirements) is kept between the cavity of the inner conical surface and the outer conical surface of the inner mold and is used as a flow channel of the plastic in a molten state. The section of the outlet end (the left end in fig. 5) of the outer die is circular, and the outlet end is sleeved on the circumferential outer part of the outlet section of the inner die.

The working principle of the utility model is (see fig. 5): during operation, the core wires 4 (four pairs of twisted wires, arranged according to a set mutual position) of the six-type data cable move from the cavity in the center of the inner die (the direction is shown by an arrow A in the figure); the plastic in the molten state enters the gap 10 through a channel (omitted in the figure) of the machine head, and then is extruded from the outlet end and covers the outer surface of the core wire; then enters a water tank (omitted in the figure) for cooling. The cross-section of the resulting data cable is shown in fig. 7.

Claims

1. An injection molding machine head internal mold for producing non-filling non-shielding six-class data cables comprises a tubular internal mold main body (1) with a conical outer circumferential surface, wherein an external thread for mounting the internal mold main body is manufactured at the larger end of the internal mold main body; the smaller end is communicated with an outlet section (2); the cavity in the inner die main body penetrates through the whole inner die main body in the axial direction of the inner die main body;

the method is characterized in that: a plurality of guide grooves (1-1) symmetrical to the axis of the inner die are uniformly distributed on the outer conical surface of the inner die main body, and a cavity in the middle of the cross section of the outlet section is a cross cavity; and a plurality of sunken parts on the outer surface of the outlet section are respectively communicated with the guide grooves one by one.

2. The injection molding machine head inner mold for producing the non-filled and non-shielded six-type data cable according to claim 1, wherein: the end face of the larger end of the inner die main body is connected with a connecting section (3), and the external thread is manufactured on the connecting section.

3. The injection molding machine head inner mold for producing the non-filled non-shielded six-type data cable according to claim 2, wherein: the guide groove is gradually shallow from the outer surface of the outlet section to the outer surface of the larger end of the inner die body until the guide groove disappears.

4. The injection molding machine head inner mold for producing the non-filled and non-shielded six-type data cable according to claim 3, wherein: the outer surface of the larger end of the inner die main body is provided with two parallel planes (1-2) for mounting.

5. The injection molding machine head inner mold for producing the non-filled and non-shielded six-type data cable according to claim 4, wherein: the thickness of the wall part of each part of the outlet section is the same.